File:  [LON-CAPA] / loncom / homework / grades.pm
Revision 1.764: download - view: text, annotated - select for diffs
Wed May 6 00:09:49 2020 UTC (4 years, 6 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- Consistent punctuation in grading links

    1: # The LearningOnline Network with CAPA
    2: # The LON-CAPA Grading handler
    3: #
    4: # $Id: grades.pm,v 1.764 2020/05/06 00:09:49 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: 
   30: 
   31: package Apache::grades;
   32: use strict;
   33: use Apache::style;
   34: use Apache::lonxml;
   35: use Apache::lonnet;
   36: use Apache::loncommon;
   37: use Apache::lonhtmlcommon;
   38: use Apache::lonnavmaps;
   39: use Apache::lonhomework;
   40: use Apache::lonpickcode;
   41: use Apache::loncoursedata;
   42: use Apache::lonmsg();
   43: use Apache::Constants qw(:common :http);
   44: use Apache::lonlocal;
   45: use Apache::lonenc;
   46: use Apache::lonstathelpers;
   47: use Apache::lonquickgrades;
   48: use Apache::bridgetask();
   49: use Apache::lontexconvert();
   50: use String::Similarity;
   51: use HTML::Parser();
   52: use File::MMagic;
   53: use LONCAPA;
   54: 
   55: use POSIX qw(floor);
   56: 
   57: 
   58: 
   59: my %perm=();
   60: my %old_essays=();
   61: 
   62: #  These variables are used to recover from ssi errors
   63: 
   64: my $ssi_retries = 5;
   65: my $ssi_error;
   66: my $ssi_error_resource;
   67: my $ssi_error_message;
   68: 
   69: 
   70: sub ssi_with_retries {
   71:     my ($resource, $retries, %form) = @_;
   72:     my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
   73:     if ($response->is_error) {
   74: 	$ssi_error          = 1;
   75: 	$ssi_error_resource = $resource;
   76: 	$ssi_error_message  = $response->code . " " . $response->message;
   77:     }
   78: 
   79:     return $content;
   80: 
   81: }
   82: #
   83: #  Prodcuces an ssi retry failure error message to the user:
   84: #
   85: 
   86: sub ssi_print_error {
   87:     my ($r) = @_;
   88:     my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
   89:     $r->print('
   90: <br />
   91: <h2>'.&mt('An unrecoverable network error occurred:').'</h2>
   92: <p>
   93: '.&mt('Unable to retrieve a resource from a server:').'<br />
   94: '.&mt('Resource:').' '.$ssi_error_resource.'<br />
   95: '.&mt('Error:').' '.$ssi_error_message.'
   96: </p>
   97: <p>'.
   98: &mt('It is recommended that you try again later, as this error may mean the server was just temporarily unavailable, or is down for maintenance.').'<br />'.
   99: &mt('If the error persists, please contact the [_1] for assistance.',$helpurl).
  100: '</p>');
  101:     return;
  102: }
  103: 
  104: #
  105: # --- Retrieve the parts from the metadata file.---
  106: # Returns an array of everything that the resources stores away
  107: #
  108: 
  109: sub getpartlist {
  110:     my ($symb,$errorref) = @_;
  111: 
  112:     my $navmap   = Apache::lonnavmaps::navmap->new();
  113:     unless (ref($navmap)) {
  114:         if (ref($errorref)) { 
  115:             $$errorref = 'navmap';
  116:             return;
  117:         }
  118:     }
  119:     my $res      = $navmap->getBySymb($symb);
  120:     my $partlist = $res->parts();
  121:     my $url      = $res->src();
  122:     my $toolsymb;
  123:     if ($url =~ /ext\.tool$/) {
  124:         $toolsymb = $symb;
  125:     }
  126:     my @metakeys = split(/,/,&Apache::lonnet::metadata($url,'keys',$toolsymb));
  127: 
  128:     my @stores;
  129:     foreach my $part (@{ $partlist }) {
  130: 	foreach my $key (@metakeys) {
  131: 	    if ($key =~ m/^stores_\Q$part\E_/) { push(@stores,$key); }
  132: 	}
  133:     }
  134:     return @stores;
  135: }
  136: 
  137: #--- Format fullname, username:domain if different for display
  138: #--- Use anywhere where the student names are listed
  139: sub nameUserString {
  140:     my ($type,$fullname,$uname,$udom) = @_;
  141:     if ($type eq 'header') {
  142: 	return '<b>&nbsp;'.&mt('Fullname').'&nbsp;</b><span class="LC_internal_info">('.&mt('Username').')</span>';
  143:     } else {
  144: 	return '&nbsp;'.$fullname.'<span class="LC_internal_info">&nbsp;('.$uname.
  145: 	    ($env{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</span>';
  146:     }
  147: }
  148: 
  149: #--- Get the partlist and the response type for a given problem. ---
  150: #--- Indicate if a response type is coded handgraded or not. ---
  151: #--- Sets response_error pointer to "1" if navmaps object broken ---
  152: sub response_type {
  153:     my ($symb,$response_error) = @_;
  154: 
  155:     my $navmap = Apache::lonnavmaps::navmap->new();
  156:     unless (ref($navmap)) {
  157:         if (ref($response_error)) {
  158:             $$response_error = 1;
  159:         }
  160:         return;
  161:     }
  162:     my $res = $navmap->getBySymb($symb);
  163:     unless (ref($res)) {
  164:         $$response_error = 1;
  165:         return;
  166:     }
  167:     my $partlist = $res->parts();
  168:     my %vPart = 
  169: 	map { $_ => 1 } (&Apache::loncommon::get_env_multiple('form.vPart'));
  170:     my (%response_types,%handgrade);
  171:     foreach my $part (@{ $partlist }) {
  172: 	next if (%vPart && !exists($vPart{$part}));
  173: 
  174: 	my @types = $res->responseType($part);
  175: 	my @ids = $res->responseIds($part);
  176: 	for (my $i=0; $i < scalar(@ids); $i++) {
  177: 	    $response_types{$part}{$ids[$i]} = $types[$i];
  178: 	    $handgrade{$part.'_'.$ids[$i]} = 
  179: 		&Apache::lonnet::EXT('resource.'.$part.'_'.$ids[$i].
  180: 				     '.handgrade',$symb);
  181: 	}
  182:     }
  183:     return ($partlist,\%handgrade,\%response_types);
  184: }
  185: 
  186: sub flatten_responseType {
  187:     my ($responseType) = @_;
  188:     my @part_response_id =
  189: 	map { 
  190: 	    my $part = $_;
  191: 	    map {
  192: 		[$part,$_]
  193: 		} sort(keys(%{ $responseType->{$part} }));
  194: 	} sort(keys(%$responseType));
  195:     return @part_response_id;
  196: }
  197: 
  198: sub get_display_part {
  199:     my ($partID,$symb)=@_;
  200:     my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',$symb);
  201:     if (defined($display) and $display ne '') {
  202:         $display.= ' (<span class="LC_internal_info">'
  203:                   .&mt('Part ID: [_1]',$partID).'</span>)';
  204:     } else {
  205: 	$display=$partID;
  206:     }
  207:     return $display;
  208: }
  209: 
  210: sub reset_caches {
  211:     &reset_analyze_cache();
  212:     &reset_perm();
  213:     &reset_old_essays();
  214: }
  215: 
  216: {
  217:     my %analyze_cache;
  218:     my %analyze_cache_formkeys;
  219: 
  220:     sub reset_analyze_cache {
  221: 	undef(%analyze_cache);
  222:         undef(%analyze_cache_formkeys);
  223:     }
  224: 
  225:     sub get_analyze {
  226: 	my ($symb,$uname,$udom,$no_increment,$add_to_hash,$type,$trial,$rndseed,$bubbles_per_row)=@_;
  227: 	my $key = "$symb\0$uname\0$udom";
  228:         if ($type eq 'randomizetry') {
  229:             if ($trial ne '') {
  230:                 $key .= "\0".$trial;
  231:             }
  232:         }
  233: 	if (exists($analyze_cache{$key})) {
  234:             my $getupdate = 0;
  235:             if (ref($add_to_hash) eq 'HASH') {
  236:                 foreach my $item (keys(%{$add_to_hash})) {
  237:                     if (ref($analyze_cache_formkeys{$key}) eq 'HASH') {
  238:                         if (!exists($analyze_cache_formkeys{$key}{$item})) {
  239:                             $getupdate = 1;
  240:                             last;
  241:                         }
  242:                     } else {
  243:                         $getupdate = 1;
  244:                     }
  245:                 }
  246:             }
  247:             if (!$getupdate) {
  248:                 return $analyze_cache{$key};
  249:             }
  250:         }
  251: 
  252: 	my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
  253: 	$url=&Apache::lonnet::clutter($url);
  254:         my %form = ('grade_target'      => 'analyze',
  255:                     'grade_domain'      => $udom,
  256:                     'grade_symb'        => $symb,
  257:                     'grade_courseid'    =>  $env{'request.course.id'},
  258:                     'grade_username'    => $uname,
  259:                     'grade_noincrement' => $no_increment);
  260:         if ($bubbles_per_row ne '') {
  261:             $form{'bubbles_per_row'} = $bubbles_per_row;
  262:         }
  263:         if ($type eq 'randomizetry') {
  264:             $form{'grade_questiontype'} = $type;
  265:             if ($rndseed ne '') {
  266:                 $form{'grade_rndseed'} = $rndseed;
  267:             }
  268:         }
  269:         if (ref($add_to_hash)) {
  270:             %form = (%form,%{$add_to_hash});
  271:         }
  272: 	my $subresult=&ssi_with_retries($url, $ssi_retries,%form);
  273: 	(undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
  274: 	my %analyze=&Apache::lonnet::str2hash($subresult);
  275:         if (ref($add_to_hash) eq 'HASH') {
  276:             $analyze_cache_formkeys{$key} = $add_to_hash;
  277:         } else {
  278:             $analyze_cache_formkeys{$key} = {};
  279:         }
  280: 	return $analyze_cache{$key} = \%analyze;
  281:     }
  282: 
  283:     sub get_order {
  284: 	my ($partid,$respid,$symb,$uname,$udom,$no_increment,$type,$trial,$rndseed)=@_;
  285: 	my $analyze = &get_analyze($symb,$uname,$udom,$no_increment,undef,$type,$trial,$rndseed);
  286: 	return $analyze->{"$partid.$respid.shown"};
  287:     }
  288: 
  289:     sub get_radiobutton_correct_foil {
  290: 	my ($partid,$respid,$symb,$uname,$udom,$type,$trial,$rndseed)=@_;
  291: 	my $analyze = &get_analyze($symb,$uname,$udom,undef,undef,$type,$trial,$rndseed);
  292:         my $foils = &get_order($partid,$respid,$symb,$uname,$udom,undef,$type,$trial,$rndseed);
  293:         if (ref($foils) eq 'ARRAY') {
  294: 	    foreach my $foil (@{$foils}) {
  295: 	        if ($analyze->{"$partid.$respid.foil.value.$foil"} eq 'true') {
  296: 		    return $foil;
  297: 	        }
  298: 	    }
  299: 	}
  300:     }
  301: 
  302:     sub scantron_partids_tograde {
  303:         my ($resource,$cid,$uname,$udom,$check_for_randomlist,$bubbles_per_row,$scancode) = @_;
  304:         my (%analysis,@parts);
  305:         if (ref($resource)) {
  306:             my $symb = $resource->symb();
  307:             my $add_to_form;
  308:             if ($check_for_randomlist) {
  309:                 $add_to_form = { 'check_parts_withrandomlist' => 1,};
  310:             }
  311:             if ($scancode) {
  312:                 if (ref($add_to_form) eq 'HASH') {
  313:                     $add_to_form->{'code_for_randomlist'} = $scancode;
  314:                 } else {
  315:                     $add_to_form = { 'code_for_randomlist' => $scancode,};
  316:                 }
  317:             }
  318:             my $analyze = 
  319:                 &get_analyze($symb,$uname,$udom,undef,$add_to_form,
  320:                              undef,undef,undef,$bubbles_per_row);
  321:             if (ref($analyze) eq 'HASH') {
  322:                 %analysis = %{$analyze};
  323:             }
  324:             if (ref($analysis{'parts'}) eq 'ARRAY') {
  325:                 foreach my $part (@{$analysis{'parts'}}) {
  326:                     my ($id,$respid) = split(/\./,$part);
  327:                     if (!&Apache::loncommon::check_if_partid_hidden($id,$symb,$udom,$uname)) {
  328:                         push(@parts,$part);
  329:                     }
  330:                 }
  331:             }
  332:         }
  333:         return (\%analysis,\@parts);
  334:     }
  335: 
  336: }
  337: 
  338: #--- Clean response type for display
  339: #--- Currently filters option/rank/radiobutton/match/essay/Task
  340: #        response types only.
  341: sub cleanRecord {
  342:     my ($answer,$response,$symb,$partid,$respid,$record,$order,$version,
  343: 	$uname,$udom,$type,$trial,$rndseed) = @_;
  344:     my $grayFont = '<span class="LC_internal_info">';
  345:     if ($response =~ /^(option|rank)$/) {
  346: 	my %answer=&Apache::lonnet::str2hash($answer);
  347:         my @answer = %answer;
  348:         %answer = map {&HTML::Entities::encode($_, '"<>&')}  @answer;
  349: 	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
  350: 	my ($toprow,$bottomrow);
  351: 	foreach my $foil (@$order) {
  352: 	    if ($grading{$foil} == 1) {
  353: 		$toprow.='<td><b>'.$answer{$foil}.'&nbsp;</b></td>';
  354: 	    } else {
  355: 		$toprow.='<td><i>'.$answer{$foil}.'&nbsp;</i></td>';
  356: 	    }
  357: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  358: 	}
  359: 	return '<blockquote><table border="1">'.
  360: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  361: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  362: 	    $bottomrow.'</tr></table></blockquote>';
  363:     } elsif ($response eq 'match') {
  364: 	my %answer=&Apache::lonnet::str2hash($answer);
  365:         my @answer = %answer;
  366:         %answer = map {&HTML::Entities::encode($_, '"<>&')}  @answer;
  367: 	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
  368: 	my @items=&Apache::lonnet::str2array($record->{$version."resource.$partid.$respid.submissionitems"});
  369: 	my ($toprow,$middlerow,$bottomrow);
  370: 	foreach my $foil (@$order) {
  371: 	    my $item=shift(@items);
  372: 	    if ($grading{$foil} == 1) {
  373: 		$toprow.='<td><b>'.$item.'&nbsp;</b></td>';
  374: 		$middlerow.='<td><b>'.$grayFont.$answer{$foil}.'&nbsp;</span></b></td>';
  375: 	    } else {
  376: 		$toprow.='<td><i>'.$item.'&nbsp;</i></td>';
  377: 		$middlerow.='<td><i>'.$grayFont.$answer{$foil}.'&nbsp;</span></i></td>';
  378: 	    }
  379: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  380: 	}
  381: 	return '<blockquote><table border="1">'.
  382: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  383: 	    '<tr valign="top"><td>'.$grayFont.&mt('Item ID').'</span></td>'.
  384: 	    $middlerow.'</tr>'.
  385: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  386: 	    $bottomrow.'</tr></table></blockquote>';
  387:     } elsif ($response eq 'radiobutton') {
  388: 	my %answer=&Apache::lonnet::str2hash($answer);
  389:         my @answer = %answer;
  390:         %answer = map {&HTML::Entities::encode($_, '"<>&')}  @answer;
  391: 	my ($toprow,$bottomrow);
  392: 	my $correct = 
  393: 	    &get_radiobutton_correct_foil($partid,$respid,$symb,$uname,$udom,$type,$trial,$rndseed);
  394: 	foreach my $foil (@$order) {
  395: 	    if (exists($answer{$foil})) {
  396: 		if ($foil eq $correct) {
  397: 		    $toprow.='<td><b>'.&mt('true').'</b></td>';
  398: 		} else {
  399: 		    $toprow.='<td><i>'.&mt('true').'</i></td>';
  400: 		}
  401: 	    } else {
  402: 		$toprow.='<td>'.&mt('false').'</td>';
  403: 	    }
  404: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  405: 	}
  406: 	return '<blockquote><table border="1">'.
  407: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  408: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  409: 	    $bottomrow.'</tr></table></blockquote>';
  410:     } elsif ($response eq 'essay') {
  411: 	if (! exists ($env{'form.'.$symb})) {
  412: 	    my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
  413: 						  $env{'course.'.$env{'request.course.id'}.'.domain'},
  414: 						  $env{'course.'.$env{'request.course.id'}.'.num'});
  415: 
  416: 	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
  417: 	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
  418: 	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
  419: 	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
  420: 	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
  421: 	    $env{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
  422: 	}
  423:         $answer = &Apache::lontexconvert::msgtexconverted($answer);
  424: 	return '<br /><br /><blockquote><tt>'.&keywords_highlight($answer).'</tt></blockquote>';
  425: 
  426:     } elsif ( $response eq 'organic') {
  427:         my $result=&mt('Smile representation: [_1]',
  428:                            '"<tt>'.&HTML::Entities::encode($answer, '"<>&').'</tt>"');
  429: 	my $jme=$record->{$version."resource.$partid.$respid.molecule"};
  430: 	$result.=&Apache::chemresponse::jme_img($jme,$answer,400);
  431: 	return $result;
  432:     } elsif ( $response eq 'Task') {
  433: 	if ( $answer eq 'SUBMITTED') {
  434: 	    my $files = $record->{$version."resource.$respid.$partid.bridgetask.portfiles"};
  435: 	    my $result = &Apache::bridgetask::file_list($files,$uname,$udom);
  436: 	    return $result;
  437: 	} elsif ( grep(/^\Q$version\E.*?\.instance$/, keys(%{$record})) ) {
  438: 	    my @matches = grep(/^\Q$version\E.*?\.instance$/,
  439: 			       keys(%{$record}));
  440: 	    return join('<br />',($version,@matches));
  441: 			       
  442: 			       
  443: 	} else {
  444: 	    my $result =
  445: 		'<p>'
  446: 		.&mt('Overall result: [_1]',
  447: 		     $record->{$version."resource.$respid.$partid.status"})
  448: 		.'</p>';
  449: 	    
  450: 	    $result .= '<ul>';
  451: 	    my @grade = grep(/^\Q${version}resource.$respid.$partid.\E[^.]*[.]status$/,
  452: 			     keys(%{$record}));
  453: 	    foreach my $grade (sort(@grade)) {
  454: 		my ($dim) = ($grade =~/[.]([^.]+)[.]status$/);
  455: 		$result.= '<li>'.&mt("Dimension: [_1], status [_2] ",
  456: 				     $dim, $record->{$grade}).
  457: 			  '</li>';
  458: 	    }
  459: 	    $result.='</ul>';
  460: 	    return $result;
  461: 	}
  462:     } elsif ( $response =~ m/(?:numerical|formula|custom)/) {
  463:         # Respect multiple input fields, see Bug #5409
  464: 	$answer = 
  465: 	    &Apache::loncommon::format_previous_attempt_value('submission',
  466: 							      $answer);
  467: 	return $answer;
  468:     }
  469:     return &HTML::Entities::encode($answer, '"<>&');
  470: }
  471: 
  472: #-- A couple of common js functions
  473: sub commonJSfunctions {
  474:     my $request = shift;
  475:     $request->print(&Apache::lonhtmlcommon::scripttag(<<COMMONJSFUNCTIONS));
  476:     function radioSelection(radioButton) {
  477: 	var selection=null;
  478: 	if (radioButton.length > 1) {
  479: 	    for (var i=0; i<radioButton.length; i++) {
  480: 		if (radioButton[i].checked) {
  481: 		    return radioButton[i].value;
  482: 		}
  483: 	    }
  484: 	} else {
  485: 	    if (radioButton.checked) return radioButton.value;
  486: 	}
  487: 	return selection;
  488:     }
  489: 
  490:     function pullDownSelection(selectOne) {
  491: 	var selection="";
  492: 	if (selectOne.length > 1) {
  493: 	    for (var i=0; i<selectOne.length; i++) {
  494: 		if (selectOne[i].selected) {
  495: 		    return selectOne[i].value;
  496: 		}
  497: 	    }
  498: 	} else {
  499:             // only one value it must be the selected one
  500: 	    return selectOne.value;
  501: 	}
  502:     }
  503: COMMONJSFUNCTIONS
  504: }
  505: 
  506: #--- Dumps the class list with usernames,list of sections,
  507: #--- section, ids and fullnames for each user.
  508: sub getclasslist {
  509:     my ($getsec,$filterbyaccstatus,$getgroup,$symb,$submitonly,$filterbysubmstatus) = @_;
  510:     my @getsec;
  511:     my @getgroup;
  512:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  513:     if (!ref($getsec)) {
  514: 	if ($getsec ne '' && $getsec ne 'all') {
  515: 	    @getsec=($getsec);
  516: 	}
  517:     } else {
  518: 	@getsec=@{$getsec};
  519:     }
  520:     if (grep(/^all$/,@getsec)) { undef(@getsec); }
  521:     if (!ref($getgroup)) {
  522: 	if ($getgroup ne '' && $getgroup ne 'all') {
  523: 	    @getgroup=($getgroup);
  524: 	}
  525:     } else {
  526: 	@getgroup=@{$getgroup};
  527:     }
  528:     if (grep(/^all$/,@getgroup)) { undef(@getgroup); }
  529: 
  530:     my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist();
  531:     # Bail out if we were unable to get the classlist
  532:     return if (! defined($classlist));
  533:     &Apache::loncoursedata::get_group_memberships($classlist,$keylist);
  534:     #
  535:     my %sections;
  536:     my %fullnames;
  537:     my ($cdom,$cnum,$partlist);
  538:     if (($filterbysubmstatus) && ($submitonly ne 'all') && ($symb ne '')) {
  539:         $cdom = $env{"course.$env{'request.course.id'}.domain"};
  540:         $cnum = $env{"course.$env{'request.course.id'}.num"};
  541:         my $res_error;
  542:         ($partlist,my $handgrade,my $responseType) = &response_type($symb,\$res_error);
  543:     }
  544:     foreach my $student (keys(%$classlist)) {
  545:         my $end      = 
  546:             $classlist->{$student}->[&Apache::loncoursedata::CL_END()];
  547:         my $start    = 
  548:             $classlist->{$student}->[&Apache::loncoursedata::CL_START()];
  549:         my $id       = 
  550:             $classlist->{$student}->[&Apache::loncoursedata::CL_ID()];
  551:         my $section  = 
  552:             $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
  553:         my $fullname = 
  554:             $classlist->{$student}->[&Apache::loncoursedata::CL_FULLNAME()];
  555:         my $status   = 
  556:             $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS()];
  557:         my $group   = 
  558:             $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
  559: 	# filter students according to status selected
  560: 	if ($filterbyaccstatus && (!($stu_status =~ /Any/))) {
  561: 	    if (!($stu_status =~ $status)) {
  562: 		delete($classlist->{$student});
  563: 		next;
  564: 	    }
  565: 	}
  566: 	# filter students according to groups selected
  567: 	my @stu_groups = split(/,/,$group);
  568: 	if (@getgroup) {
  569: 	    my $exclude = 1;
  570: 	    foreach my $grp (@getgroup) {
  571: 	        foreach my $stu_group (@stu_groups) {
  572: 	            if ($stu_group eq $grp) {
  573: 	                $exclude = 0;
  574:     	            } 
  575: 	        }
  576:     	        if (($grp eq 'none') && !$group) {
  577:         	    $exclude = 0;
  578:         	}
  579: 	    }
  580: 	    if ($exclude) {
  581: 	        delete($classlist->{$student});
  582: 		next;
  583: 	    }
  584: 	}
  585:         if (($filterbysubmstatus) && ($submitonly ne 'all') && ($symb ne '')) {
  586:             my $udom =
  587:                 $classlist->{$student}->[&Apache::loncoursedata::CL_SDOM()];
  588:             my $uname =
  589:                 $classlist->{$student}->[&Apache::loncoursedata::CL_SNAME()];
  590:             if (($symb ne '') && ($udom ne '') && ($uname ne '')) {
  591:                 if ($submitonly eq 'queued') {
  592:                     my %queue_status =
  593:                         &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
  594:                                                                 $udom,$uname);
  595:                     if (!defined($queue_status{'gradingqueue'})) {
  596:                         delete($classlist->{$student});
  597:                         next;
  598:                     }
  599:                 } else {
  600:                     my (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
  601:                     my $submitted = 0;
  602:                     my $graded = 0;
  603:                     my $incorrect = 0;
  604:                     foreach (keys(%status)) {
  605:                         $submitted = 1 if ($status{$_} ne 'nothing');
  606:                         $graded = 1 if ($status{$_} =~ /^ungraded/);
  607:                         $incorrect = 1 if ($status{$_} =~ /^incorrect/);
  608: 
  609:                         my ($foo,$partid,$foo1) = split(/\./,$_);
  610:                         if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
  611:                             $submitted = 0;
  612:                         }
  613:                     }
  614:                     if (!$submitted && ($submitonly eq 'yes' ||
  615:                                         $submitonly eq 'incorrect' ||
  616:                                         $submitonly eq 'graded')) {
  617:                         delete($classlist->{$student});
  618:                         next;
  619:                     } elsif (!$graded && ($submitonly eq 'graded')) {
  620:                         delete($classlist->{$student});
  621:                         next;
  622:                     } elsif (!$incorrect && $submitonly eq 'incorrect') {
  623:                         delete($classlist->{$student});
  624:                         next;
  625:                     }
  626:                 }
  627:             }
  628:         }
  629: 	$section = ($section ne '' ? $section : 'none');
  630: 	if (&canview($section)) {
  631: 	    if (!@getsec || grep(/^\Q$section\E$/,@getsec)) {
  632: 		$sections{$section}++;
  633: 		if ($classlist->{$student}) {
  634: 		    $fullnames{$student}=$fullname;
  635: 		}
  636: 	    } else {
  637: 		delete($classlist->{$student});
  638: 	    }
  639: 	} else {
  640: 	    delete($classlist->{$student});
  641: 	}
  642:     }
  643:     my @sections = sort(keys(%sections));
  644:     return ($classlist,\@sections,\%fullnames);
  645: }
  646: 
  647: sub canmodify {
  648:     my ($sec)=@_;
  649:     if ($perm{'mgr'}) {
  650: 	if (!defined($perm{'mgr_section'})) {
  651: 	    # can modify whole class
  652: 	    return 1;
  653: 	} else {
  654: 	    if ($sec eq $perm{'mgr_section'}) {
  655: 		#can modify the requested section
  656: 		return 1;
  657: 	    } else {
  658: 		# can't modify the requested section
  659: 		return 0;
  660: 	    }
  661: 	}
  662:     }
  663:     #can't modify
  664:     return 0;
  665: }
  666: 
  667: sub canview {
  668:     my ($sec)=@_;
  669:     if ($perm{'vgr'}) {
  670: 	if (!defined($perm{'vgr_section'})) {
  671: 	    # can view whole class
  672: 	    return 1;
  673: 	} else {
  674: 	    if ($sec eq $perm{'vgr_section'}) {
  675: 		#can view the requested section
  676: 		return 1;
  677: 	    } else {
  678: 		# can't view the requested section
  679: 		return 0;
  680: 	    }
  681: 	}
  682:     }
  683:     #can't view
  684:     return 0;
  685: }
  686: 
  687: #--- Retrieve the grade status of a student for all the parts
  688: sub student_gradeStatus {
  689:     my ($symb,$udom,$uname,$partlist) = @_;
  690:     my %record     = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
  691:     my %partstatus = ();
  692:     foreach (@$partlist) {
  693: 	my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
  694: 	$status              = 'nothing' if ($status eq '');
  695: 	$partstatus{$_}      = $status;
  696: 	my $subkey           = "resource.$_.submitted_by";
  697: 	$partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
  698:     }
  699:     return %partstatus;
  700: }
  701: 
  702: # hidden form and javascript that calls the form
  703: # Use by verifyscript and viewgrades
  704: # Shows a student's view of problem and submission
  705: sub jscriptNform {
  706:     my ($symb) = @_;
  707:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  708:     my $jscript= &Apache::lonhtmlcommon::scripttag(
  709: 	'    function viewOneStudent(user,domain) {'."\n".
  710: 	'	document.onestudent.student.value = user;'."\n".
  711: 	'	document.onestudent.userdom.value = domain;'."\n".
  712: 	'	document.onestudent.submit();'."\n".
  713: 	'    }'."\n".
  714: 	"\n");
  715:     $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
  716: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  717: 	'<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
  718: 	'<input type="hidden" name="command" value="submission" />'."\n".
  719: 	'<input type="hidden" name="student" value="" />'."\n".
  720: 	'<input type="hidden" name="userdom" value="" />'."\n".
  721: 	'</form>'."\n";
  722:     return $jscript;
  723: }
  724: 
  725: 
  726: 
  727: # Given the score (as a number [0-1] and the weight) what is the final
  728: # point value? This function will round to the nearest tenth, third,
  729: # or quarter if one of those is within the tolerance of .00001.
  730: sub compute_points {
  731:     my ($score, $weight) = @_;
  732:     
  733:     my $tolerance = .00001;
  734:     my $points = $score * $weight;
  735: 
  736:     # Check for nearness to 1/x.
  737:     my $check_for_nearness = sub {
  738:         my ($factor) = @_;
  739:         my $num = ($points * $factor) + $tolerance;
  740:         my $floored_num = floor($num);
  741:         if ($num - $floored_num < 2 * $tolerance * $factor) {
  742:             return $floored_num / $factor;
  743:         }
  744:         return $points;
  745:     };
  746: 
  747:     $points = $check_for_nearness->(10);
  748:     $points = $check_for_nearness->(3);
  749:     $points = $check_for_nearness->(4);
  750:     
  751:     return $points;
  752: }
  753: 
  754: #------------------ End of general use routines --------------------
  755: 
  756: #
  757: # Find most similar essay
  758: #
  759: 
  760: sub most_similar {
  761:     my ($uname,$udom,$symb,$uessay)=@_;
  762: 
  763:     unless ($symb) { return ''; }
  764: 
  765:     unless (ref($old_essays{$symb}) eq 'HASH') { return ''; }
  766: 
  767: # ignore spaces and punctuation
  768: 
  769:     $uessay=~s/\W+/ /gs;
  770: 
  771: # ignore empty submissions (occuring when only files are sent)
  772: 
  773:     unless ($uessay=~/\w+/s) { return ''; }
  774: 
  775: # these will be returned. Do not care if not at least 50 percent similar
  776:     my $limit=0.6;
  777:     my $sname='';
  778:     my $sdom='';
  779:     my $scrsid='';
  780:     my $sessay='';
  781: # go through all essays ...
  782:     foreach my $tkey (keys(%{$old_essays{$symb}})) {
  783: 	my ($tname,$tdom,$tcrsid)=map {&unescape($_)} (split(/\./,$tkey));
  784: # ... except the same student
  785:         next if (($tname eq $uname) && ($tdom eq $udom));
  786: 	my $tessay=$old_essays{$symb}{$tkey};
  787: 	$tessay=~s/\W+/ /gs;
  788: # String similarity gives up if not even limit
  789: 	my $tsimilar=&String::Similarity::similarity($uessay,$tessay,$limit);
  790: # Found one
  791: 	if ($tsimilar>$limit) {
  792: 	    $limit=$tsimilar;
  793: 	    $sname=$tname;
  794: 	    $sdom=$tdom;
  795: 	    $scrsid=$tcrsid;
  796: 	    $sessay=$old_essays{$symb}{$tkey};
  797: 	}
  798:     }
  799:     if ($limit>0.6) {
  800:        return ($sname,$sdom,$scrsid,$sessay,$limit);
  801:     } else {
  802:        return ('','','','',0);
  803:     }
  804: }
  805: 
  806: #-------------------------------------------------------------------
  807: 
  808: #------------------------------------ Receipt Verification Routines
  809: #
  810: 
  811: sub initialverifyreceipt {
  812:    my ($request,$symb) = @_;
  813:    &commonJSfunctions($request);
  814:    return '<form name="gradingMenu" action=""><input type="submit" value="'.&mt('Verify Receipt Number.').'" />'.
  815:         &Apache::lonnet::recprefix($env{'request.course.id'}).
  816:         '-<input type="text" name="receipt" size="4" />'.
  817:         '<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  818:         '<input type="hidden" name="command" value="verify" />'.
  819:         "</form>\n";
  820: }
  821: 
  822: #--- Check whether a receipt number is valid.---
  823: sub verifyreceipt {
  824:     my ($request,$symb)  = @_;
  825: 
  826:     my $courseid = $env{'request.course.id'};
  827:     my $receipt  = &Apache::lonnet::recprefix($courseid).'-'.
  828: 	$env{'form.receipt'};
  829:     $receipt     =~ s/[^\-\d]//g;
  830: 
  831:     my $title.=
  832: 	'<h3><span class="LC_info">'.
  833: 	&mt('Verifying Receipt Number [_1]',$receipt).
  834: 	'</span></h3>'."\n";
  835: 
  836:     my ($string,$contents,$matches) = ('','',0);
  837:     my (undef,undef,$fullname) = &getclasslist('all','0');
  838:     
  839:     my $receiptparts=0;
  840:     if ($env{"course.$courseid.receiptalg"} eq 'receipt2' ||
  841: 	$env{"course.$courseid.receiptalg"} eq 'receipt3') { $receiptparts=1; }
  842:     my $parts=['0'];
  843:     if ($receiptparts) {
  844:         my $res_error; 
  845:         ($parts)=&response_type($symb,\$res_error);
  846:         if ($res_error) {
  847:             return &navmap_errormsg();
  848:         } 
  849:     }
  850:     
  851:     my $header = 
  852: 	&Apache::loncommon::start_data_table().
  853: 	&Apache::loncommon::start_data_table_header_row().
  854: 	'<th>&nbsp;'.&mt('Fullname').'&nbsp;</th>'."\n".
  855: 	'<th>&nbsp;'.&mt('Username').'&nbsp;</th>'."\n".
  856: 	'<th>&nbsp;'.&mt('Domain').'&nbsp;</th>';
  857:     if ($receiptparts) {
  858: 	$header.='<th>&nbsp;'.&mt('Problem Part').'&nbsp;</th>';
  859:     }
  860:     $header.=
  861: 	&Apache::loncommon::end_data_table_header_row();
  862: 
  863:     foreach (sort 
  864: 	     {
  865: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
  866: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
  867: 		 }
  868: 		 return $a cmp $b;
  869: 	     } (keys(%$fullname))) {
  870: 	my ($uname,$udom)=split(/\:/);
  871: 	foreach my $part (@$parts) {
  872: 	    if ($receipt eq &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb,$part)) {
  873: 		$contents.=
  874: 		    &Apache::loncommon::start_data_table_row().
  875: 		    '<td>&nbsp;'."\n".
  876: 		    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
  877: 		    '\');" target="_self">'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
  878: 		    '<td>&nbsp;'.$uname.'&nbsp;</td>'.
  879: 		    '<td>&nbsp;'.$udom.'&nbsp;</td>';
  880: 		if ($receiptparts) {
  881: 		    $contents.='<td>&nbsp;'.$part.'&nbsp;</td>';
  882: 		}
  883: 		$contents.= 
  884: 		    &Apache::loncommon::end_data_table_row()."\n";
  885: 		
  886: 		$matches++;
  887: 	    }
  888: 	}
  889:     }
  890:     if ($matches == 0) {
  891:         $string = $title
  892:                  .'<p class="LC_warning">'
  893:                  .&mt('No match found for the above receipt number.')
  894:                  .'</p>';
  895:     } else {
  896: 	$string = &jscriptNform($symb).$title.
  897: 	    '<p>'.
  898: 	    &mt('The above receipt number matches the following [quant,_1,student].',$matches).
  899: 	    '</p>'.
  900: 	    $header.
  901: 	    $contents.
  902: 	    &Apache::loncommon::end_data_table()."\n";
  903:     }
  904:     return $string;
  905: }
  906: 
  907: #--- This is called by a number of programs.
  908: #--- Called from the Grading Menu - View/Grade an individual student
  909: #--- Also called directly when one clicks on the subm button 
  910: #    on the problem page.
  911: sub listStudents {
  912:     my ($request,$symb,$submitonly) = @_;
  913: 
  914:     my $is_tool   = ($symb =~ /ext\.tool$/);
  915:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
  916:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
  917:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
  918:     my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
  919:     unless ($submitonly) {
  920:        $submitonly= $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
  921:     }
  922: 
  923:     my $result='';
  924:     my $res_error;
  925:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
  926: 
  927:     my %js_lt = &Apache::lonlocal::texthash (
  928: 		'multiple' => 'Please select a student or group of students before clicking on the Next button.',
  929: 		'single'   => 'Please select the student before clicking on the Next button.',
  930: 	     );
  931:     &js_escape(\%js_lt);
  932:     $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
  933:     function checkSelect(checkBox) {
  934: 	var ctr=0;
  935: 	var sense="";
  936: 	if (checkBox.length > 1) {
  937: 	    for (var i=0; i<checkBox.length; i++) {
  938: 		if (checkBox[i].checked) {
  939: 		    ctr++;
  940: 		}
  941: 	    }
  942: 	    sense = '$js_lt{'multiple'}';
  943: 	} else {
  944: 	    if (checkBox.checked) {
  945: 		ctr = 1;
  946: 	    }
  947: 	    sense = '$js_lt{'single'}';
  948: 	}
  949: 	if (ctr == 0) {
  950: 	    alert(sense);
  951: 	    return false;
  952: 	}
  953: 	document.gradesub.submit();
  954:     }
  955: 
  956:     function reLoadList(formname) {
  957: 	if (formname.saveStatusOld.value == pullDownSelection(formname.Status)) {return;}
  958: 	formname.command.value = 'submission';
  959: 	formname.submit();
  960:     }
  961: LISTJAVASCRIPT
  962: 
  963:     &commonJSfunctions($request);
  964:     $request->print($result);
  965: 
  966:     my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'.
  967: 	"\n";
  968: 	
  969:     $gradeTable .= &Apache::lonhtmlcommon::start_pick_box();
  970:     unless ($is_tool) {
  971:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('View Problem Text'))
  972:                       .'<label><input type="radio" name="vProb" value="no" checked="checked" /> '.&mt('no').' </label>'."\n"
  973:                       .'<label><input type="radio" name="vProb" value="yes" /> '.&mt('one student').' </label>'."\n"
  974:                       .'<label><input type="radio" name="vProb" value="all" /> '.&mt('all students').' </label><br />'."\n"
  975:                       .&Apache::lonhtmlcommon::row_closure();
  976:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('View Answer'))
  977:                       .'<label><input type="radio" name="vAns" value="no"  /> '.&mt('no').' </label>'."\n"
  978:                       .'<label><input type="radio" name="vAns" value="yes" /> '.&mt('one student').' </label>'."\n"
  979:                       .'<label><input type="radio" name="vAns" value="all" checked="checked" /> '.&mt('all students').' </label><br />'."\n"
  980:                       .&Apache::lonhtmlcommon::row_closure();
  981:     }
  982: 
  983:     my $submission_options;
  984:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  985:     my $saveStatus = $stu_status eq '' ? 'Active' : $stu_status;
  986:     $env{'form.Status'} = $saveStatus;
  987:     my %optiontext;
  988:     if ($is_tool) {
  989:         %optiontext = &Apache::lonlocal::texthash (
  990:                           lastonly => 'last transaction',
  991:                           last     => 'last transaction with details',
  992:                           datesub  => 'all transactions',
  993:                           all      => 'all transactions with details',
  994:                       );
  995:     } else {
  996:         %optiontext = &Apache::lonlocal::texthash (
  997:                           lastonly => 'last submission',
  998:                           last     => 'last submission with details',
  999:                           datesub  => 'all submissions',
 1000:                           all      => 'all submissions with details',
 1001:                       );
 1002:     }
 1003:     $submission_options.=
 1004:         '<span class="LC_nobreak">'.
 1005:         '<label><input type="radio" name="lastSub" value="lastonly" /> '.
 1006:         $optiontext{'lastonly'}.' </label></span>'."\n".
 1007:         '<span class="LC_nobreak">'.
 1008:         '<label><input type="radio" name="lastSub" value="last" /> '.
 1009:         $optiontext{'last'}.' </label></span>'."\n".
 1010:         '<span class="LC_nobreak">'.
 1011:         '<label><input type="radio" name="lastSub" value="datesub" checked="checked" /> '.
 1012:         $optiontext{'datesub'}.'</label></span>'."\n".
 1013:         '<span class="LC_nobreak">'.
 1014:         '<label><input type="radio" name="lastSub" value="all" /> '.
 1015:         $optiontext{'all'}.'</label></span>';
 1016:     my $viewtitle;
 1017:     if ($is_tool) {
 1018:         $viewtitle = &mt('View Transactions');
 1019:     } else {
 1020:         $viewtitle = &mt('View Submissions');
 1021:     }
 1022:     $gradeTable .= &Apache::lonhtmlcommon::row_title($viewtitle)
 1023:                   .$submission_options
 1024:                   .&Apache::lonhtmlcommon::row_closure();
 1025: 
 1026:     my $closure;
 1027:     if (($is_tool) && (exists($env{'form.Status'}))) {
 1028:         $closure = 1;
 1029:     }
 1030:     $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('Grading Increments'))
 1031:                   .'<select name="increment">'
 1032:                   .'<option value="1">'.&mt('Whole Points').'</option>'
 1033:                   .'<option value=".5">'.&mt('Half Points').'</option>'
 1034:                   .'<option value=".25">'.&mt('Quarter Points').'</option>'
 1035:                   .'<option value=".1">'.&mt('Tenths of a Point').'</option>'
 1036:                   .'</select>'
 1037:                   .&Apache::lonhtmlcommon::row_closure($closure);
 1038: 
 1039:     $gradeTable .= 
 1040:         &build_section_inputs().
 1041: 	'<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
 1042: 	'<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 1043: 	'<input type="hidden" name="saveStatusOld" value="'.$saveStatus.'" />'."\n";
 1044: 
 1045:     if (exists($env{'form.Status'})) {
 1046: 	$gradeTable .= '<input type="hidden" name="Status" value="'.$stu_status.'" />'."\n";
 1047:     } else {
 1048:         if ($is_tool) {
 1049:             $closure = 1;
 1050:         }
 1051:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('Student Status'))
 1052:                       .&Apache::lonhtmlcommon::StatusOptions(
 1053:                            $saveStatus,undef,1,'javascript:reLoadList(this.form);')
 1054:                       .&Apache::lonhtmlcommon::row_closure($closure);
 1055:     }
 1056: 
 1057:     unless ($is_tool) {
 1058:         $closure = 1;
 1059:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('Check For Plagiarism'))
 1060:                       .'<input type="checkbox" name="checkPlag" checked="checked" />'
 1061:                       .&Apache::lonhtmlcommon::row_closure($closure);
 1062:     }
 1063:     $gradeTable .= &Apache::lonhtmlcommon::end_pick_box();
 1064:     my $regrademsg;
 1065:     if ($is_tool) {
 1066:         $regrademsg =&mt("To view/grade/regrade, click on the check box(es) next to the student's name(s). Then click on the Next button.");
 1067:     } else {
 1068:         $regrademsg = &mt("To view/grade/regrade a submission or a group of submissions, click on the check box(es) next to the student's name(s). Then click on the Next button.");
 1069:     }
 1070:     $gradeTable .= '<p>'
 1071:                   .$regrademsg."\n"
 1072:                   .'<input type="hidden" name="command" value="processGroup" />'
 1073:                   .'</p>';
 1074: 
 1075: # checkall buttons
 1076:     $gradeTable.=&check_script('gradesub', 'stuinfo');
 1077:     $gradeTable.='<input type="button" '."\n".
 1078:         'onclick="javascript:checkSelect(this.form.stuinfo);" '."\n".
 1079:         'value="'.&mt('Next').' &rarr;" /> <br />'."\n";
 1080:     $gradeTable.=&check_buttons();
 1081:     my ($classlist, undef, $fullname) = &getclasslist($getsec,'1',$getgroup);
 1082:     $gradeTable.= &Apache::loncommon::start_data_table().
 1083: 	&Apache::loncommon::start_data_table_header_row();
 1084:     my $loop = 0;
 1085:     while ($loop < 2) {
 1086: 	$gradeTable.='<th>'.&mt('No.').'</th><th>'.&mt('Select').'</th>'.
 1087: 	    '<th>'.&nameUserString('header').'&nbsp;'.&mt('Section/Group').'</th>';
 1088: 	if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
 1089: 	    foreach my $part (sort(@$partlist)) {
 1090: 		my $display_part=
 1091: 		    &get_display_part((split(/_/,$part))[0],$symb);
 1092: 		$gradeTable.=
 1093: 		    '<th>'.&mt('Part: [_1] Status',$display_part).'</th>';
 1094: 	    }
 1095: 	} elsif ($submitonly eq 'queued') {
 1096: 	    $gradeTable.='<th>'.&mt('Queue Status').'&nbsp;</th>';
 1097: 	}
 1098: 	$loop++;
 1099: #	$gradeTable.='<td></td>' if ($loop%2 ==1);
 1100:     }
 1101:     $gradeTable.=&Apache::loncommon::end_data_table_header_row()."\n";
 1102: 
 1103:     my $ctr = 0;
 1104:     foreach my $student (sort 
 1105: 			 {
 1106: 			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 1107: 				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 1108: 			     }
 1109: 			     return $a cmp $b;
 1110: 			 }
 1111: 			 (keys(%$fullname))) {
 1112: 	my ($uname,$udom) = split(/:/,$student);
 1113: 
 1114: 	my %status = ();
 1115: 
 1116: 	if ($submitonly eq 'queued') {
 1117: 	    my %queue_status = 
 1118: 		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
 1119: 							$udom,$uname);
 1120: 	    next if (!defined($queue_status{'gradingqueue'}));
 1121: 	    $status{'gradingqueue'} = $queue_status{'gradingqueue'};
 1122: 	}
 1123: 
 1124: 	if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
 1125: 	    (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
 1126: 	    my $submitted = 0;
 1127: 	    my $graded = 0;
 1128: 	    my $incorrect = 0;
 1129: 	    foreach (keys(%status)) {
 1130: 		$submitted = 1 if ($status{$_} ne 'nothing');
 1131: 		$graded = 1 if ($status{$_} =~ /^ungraded/);
 1132: 		$incorrect = 1 if ($status{$_} =~ /^incorrect/);
 1133: 		
 1134: 		my ($foo,$partid,$foo1) = split(/\./,$_);
 1135: 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
 1136: 		    $submitted = 0;
 1137: 		    my ($part)=split(/\./,$partid);
 1138: 		    $gradeTable.='<input type="hidden" name="'.
 1139: 			$student.':'.$part.':submitted_by" value="'.
 1140: 			$status{'resource.'.$partid.'.submitted_by'}.'" />';
 1141: 		}
 1142: 	    }
 1143: 	    
 1144: 	    next if (!$submitted && ($submitonly eq 'yes' ||
 1145: 				     $submitonly eq 'incorrect' ||
 1146: 				     $submitonly eq 'graded'));
 1147: 	    next if (!$graded && ($submitonly eq 'graded'));
 1148: 	    next if (!$incorrect && $submitonly eq 'incorrect');
 1149: 	}
 1150: 
 1151: 	$ctr++;
 1152: 	my $section = $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
 1153:         my $group = $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
 1154: 	if ( $perm{'vgr'} eq 'F' ) {
 1155: 	    if ($ctr%2 ==1) {
 1156: 		$gradeTable.= &Apache::loncommon::start_data_table_row();
 1157: 	    }
 1158: 	    $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
 1159:                '<td align="center"><label><input type="checkbox" name="stuinfo" value="'.
 1160:                $student.':'.$$fullname{$student}.':::SECTION'.$section.
 1161: 	       ')&nbsp;" />&nbsp;&nbsp;</label></td>'."\n".'<td>'.
 1162: 	       &nameUserString(undef,$$fullname{$student},$uname,$udom).
 1163: 	       '&nbsp;'.$section.($group ne '' ?'/'.$group:'').'</td>'."\n";
 1164: 
 1165: 	    if ($submitonly ne 'all') {
 1166: 		foreach (sort(keys(%status))) {
 1167: 		    next if ($_ =~ /^resource.*?submitted_by$/);
 1168: 		    $gradeTable.='<td align="center">&nbsp;'.&mt($status{$_}).'&nbsp;</td>'."\n";
 1169: 		}
 1170: 	    }
 1171: #	    $gradeTable.='<td></td>' if ($ctr%2 ==1);
 1172: 	    if ($ctr%2 ==0) {
 1173: 		$gradeTable.=&Apache::loncommon::end_data_table_row()."\n";
 1174: 	    }
 1175: 	}
 1176:     }
 1177:     if ($ctr%2 ==1) {
 1178: 	$gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
 1179: 	    if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
 1180: 		foreach (@$partlist) {
 1181: 		    $gradeTable.='<td>&nbsp;</td>';
 1182: 		}
 1183: 	    } elsif ($submitonly eq 'queued') {
 1184: 		$gradeTable.='<td>&nbsp;</td>';
 1185: 	    }
 1186: 	$gradeTable.=&Apache::loncommon::end_data_table_row();
 1187:     }
 1188: 
 1189:     $gradeTable.=&Apache::loncommon::end_data_table()."\n".
 1190:         '<input type="button" '.
 1191:         'onclick="javascript:checkSelect(this.form.stuinfo);" '.
 1192:         'value="'.&mt('Next').' &rarr;" /></form>'."\n";
 1193:     if ($ctr == 0) {
 1194: 	my $num_students=(scalar(keys(%$fullname)));
 1195: 	if ($num_students eq 0) {
 1196: 	    $gradeTable='<br />&nbsp;<span class="LC_warning">'.&mt('There are no students currently enrolled.').'</span>';
 1197: 	} else {
 1198: 	    my $submissions='submissions';
 1199: 	    if ($submitonly eq 'incorrect') { $submissions = 'incorrect submissions'; }
 1200: 	    if ($submitonly eq 'graded'   ) { $submissions = 'ungraded submissions'; }
 1201: 	    if ($submitonly eq 'queued'   ) { $submissions = 'queued submissions'; }
 1202: 	    $gradeTable='<br />&nbsp;<span class="LC_warning">'.
 1203: 		&mt('No '.$submissions.' found for this resource for any students. ([quant,_1,student] checked for '.$submissions.')',
 1204: 		    $num_students).
 1205: 		'</span><br />';
 1206: 	}
 1207:     } elsif ($ctr == 1) {
 1208: 	$gradeTable =~ s/type="checkbox"/type="checkbox" checked="checked"/;
 1209:     }
 1210:     $request->print($gradeTable);
 1211:     return '';
 1212: }
 1213: 
 1214: #---- Called from the listStudents routine
 1215: 
 1216: sub check_script {
 1217:     my ($form, $type)=@_;
 1218:     my $chkallscript= &Apache::lonhtmlcommon::scripttag('
 1219:     function checkall() {
 1220:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1221:             ele = document.forms.'.$form.'.elements[i];
 1222:             if (ele.name == "'.$type.'") {
 1223:             document.forms.'.$form.'.elements[i].checked=true;
 1224:                                        }
 1225:         }
 1226:     }
 1227: 
 1228:     function checksec() {
 1229:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1230:             ele = document.forms.'.$form.'.elements[i];
 1231:            string = document.forms.'.$form.'.chksec.value;
 1232:            if
 1233:           (ele.value.indexOf(":::SECTION"+string)>0) {
 1234:               document.forms.'.$form.'.elements[i].checked=true;
 1235:             }
 1236:         }
 1237:     }
 1238: 
 1239: 
 1240:     function uncheckall() {
 1241:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1242:             ele = document.forms.'.$form.'.elements[i];
 1243:             if (ele.name == "'.$type.'") {
 1244:             document.forms.'.$form.'.elements[i].checked=false;
 1245:                                        }
 1246:         }
 1247:     }
 1248: 
 1249: '."\n");
 1250:     return $chkallscript;
 1251: }
 1252: 
 1253: sub check_buttons {
 1254:     my $buttons.='<input type="button" onclick="checkall()" value="'.&mt('Check All').'" />';
 1255:     $buttons.='<input type="button" onclick="uncheckall()" value="'.&mt('Uncheck All').'" />&nbsp;';
 1256:     $buttons.='<input type="button" onclick="checksec()" value="'.&mt('Check Section/Group').'" />';
 1257:     $buttons.='<input type="text" size="5" name="chksec" />&nbsp;';
 1258:     return $buttons;
 1259: }
 1260: 
 1261: #     Displays the submissions for one student or a group of students
 1262: sub processGroup {
 1263:     my ($request,$symb)  = @_;
 1264:     my $ctr        = 0;
 1265:     my @stuchecked = &Apache::loncommon::get_env_multiple('form.stuinfo');
 1266:     my $total      = scalar(@stuchecked)-1;
 1267: 
 1268:     foreach my $student (@stuchecked) {
 1269: 	my ($uname,$udom,$fullname) = split(/:/,$student);
 1270: 	$env{'form.student'}        = $uname;
 1271: 	$env{'form.userdom'}        = $udom;
 1272: 	$env{'form.fullname'}       = $fullname;
 1273: 	&submission($request,$ctr,$total,$symb);
 1274: 	$ctr++;
 1275:     }
 1276:     return '';
 1277: }
 1278: 
 1279: #------------------------------------------------------------------------------------
 1280: #
 1281: #-------------------------- Next few routines handles grading by student, essentially
 1282: #                           handles essay response type problem/part
 1283: #
 1284: #--- Javascript to handle the submission page functionality ---
 1285: sub sub_page_js {
 1286:     my $request = shift;
 1287:     my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 1288:     &js_escape(\$alertmsg);
 1289:     $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
 1290:     function updateRadio(formname,id,weight) {
 1291: 	var gradeBox = formname["GD_BOX"+id];
 1292: 	var radioButton = formname["RADVAL"+id];
 1293: 	var oldpts = formname["oldpts"+id].value;
 1294: 	var pts = checkSolved(formname,id) == 'update' ? gradeBox.value : oldpts;
 1295: 	gradeBox.value = pts;
 1296: 	var resetbox = false;
 1297: 	if (isNaN(pts) || pts < 0) {
 1298: 	    alert("$alertmsg"+pts);
 1299: 	    for (var i=0; i<radioButton.length; i++) {
 1300: 		if (radioButton[i].checked) {
 1301: 		    gradeBox.value = i;
 1302: 		    resetbox = true;
 1303: 		}
 1304: 	    }
 1305: 	    if (!resetbox) {
 1306: 		formtextbox.value = "";
 1307: 	    }
 1308: 	    return;
 1309: 	}
 1310: 
 1311: 	if (pts > weight) {
 1312: 	    var resp = confirm("You entered a value ("+pts+
 1313: 			       ") greater than the weight for the part. Accept?");
 1314: 	    if (resp == false) {
 1315: 		gradeBox.value = oldpts;
 1316: 		return;
 1317: 	    }
 1318: 	}
 1319: 
 1320: 	for (var i=0; i<radioButton.length; i++) {
 1321: 	    radioButton[i].checked=false;
 1322: 	    if (pts == i && pts != "") {
 1323: 		radioButton[i].checked=true;
 1324: 	    }
 1325: 	}
 1326: 	updateSelect(formname,id);
 1327: 	formname["stores"+id].value = "0";
 1328:     }
 1329: 
 1330:     function writeBox(formname,id,pts) {
 1331: 	var gradeBox = formname["GD_BOX"+id];
 1332: 	if (checkSolved(formname,id) == 'update') {
 1333: 	    gradeBox.value = pts;
 1334: 	} else {
 1335: 	    var oldpts = formname["oldpts"+id].value;
 1336: 	    gradeBox.value = oldpts;
 1337: 	    var radioButton = formname["RADVAL"+id];
 1338: 	    for (var i=0; i<radioButton.length; i++) {
 1339: 		radioButton[i].checked=false;
 1340: 		if (i == oldpts) {
 1341: 		    radioButton[i].checked=true;
 1342: 		}
 1343: 	    }
 1344: 	}
 1345: 	formname["stores"+id].value = "0";
 1346: 	updateSelect(formname,id);
 1347: 	return;
 1348:     }
 1349: 
 1350:     function clearRadBox(formname,id) {
 1351: 	if (checkSolved(formname,id) == 'noupdate') {
 1352: 	    updateSelect(formname,id);
 1353: 	    return;
 1354: 	}
 1355: 	gradeSelect = formname["GD_SEL"+id];
 1356: 	for (var i=0; i<gradeSelect.length; i++) {
 1357: 	    if (gradeSelect[i].selected) {
 1358: 		var selectx=i;
 1359: 	    }
 1360: 	}
 1361: 	var stores = formname["stores"+id];
 1362: 	if (selectx == stores.value) { return };
 1363: 	var gradeBox = formname["GD_BOX"+id];
 1364: 	gradeBox.value = "";
 1365: 	var radioButton = formname["RADVAL"+id];
 1366: 	for (var i=0; i<radioButton.length; i++) {
 1367: 	    radioButton[i].checked=false;
 1368: 	}
 1369: 	stores.value = selectx;
 1370:     }
 1371: 
 1372:     function checkSolved(formname,id) {
 1373: 	if (formname["solved"+id].value == "correct_by_student" && formname.overRideScore.value == 'no') {
 1374: 	    var reply = confirm("This problem has been graded correct by the computer. Do you want to change the score?");
 1375: 	    if (!reply) {return "noupdate";}
 1376: 	    formname.overRideScore.value = 'yes';
 1377: 	}
 1378: 	return "update";
 1379:     }
 1380: 
 1381:     function updateSelect(formname,id) {
 1382: 	formname["GD_SEL"+id][0].selected = true;
 1383: 	return;
 1384:     }
 1385: 
 1386: //=========== Check that a point is assigned for all the parts  ============
 1387:     function checksubmit(formname,val,total,parttot) {
 1388: 	formname.gradeOpt.value = val;
 1389: 	if (val == "Save & Next") {
 1390: 	    for (i=0;i<=total;i++) {
 1391: 		for (j=0;j<parttot;j++) {
 1392: 		    var partid = formname["partid"+i+"_"+j].value;
 1393: 		    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 1394: 			var points = formname["GD_BOX"+i+"_"+partid].value;
 1395: 			if (points == "") {
 1396: 			    var name = formname["name"+i].value;
 1397: 			    var studentID = (name != '' ? name : formname["unamedom"+i].value);
 1398: 			    var resp = confirm("You did not assign a score for "+studentID+
 1399: 					       ", part "+partid+". Continue?");
 1400: 			    if (resp == false) {
 1401: 				formname["GD_BOX"+i+"_"+partid].focus();
 1402: 				return false;
 1403: 			    }
 1404: 			}
 1405: 		    }
 1406: 		}
 1407: 	    }
 1408: 	}
 1409: 	formname.submit();
 1410:     }
 1411: 
 1412: //======= Check that a score is assigned for all the problems (page/sequence grading only) =========
 1413:     function checkSubmitPage(formname,total) {
 1414: 	noscore = new Array(100);
 1415: 	var ptr = 0;
 1416: 	for (i=1;i<total;i++) {
 1417: 	    var partid = formname["q_"+i].value;
 1418: 	    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 1419: 		var points = formname["GD_BOX"+i+"_"+partid].value;
 1420: 		var status = formname["solved"+i+"_"+partid].value;
 1421: 		if (points == "" && status != "correct_by_student") {
 1422: 		    noscore[ptr] = i;
 1423: 		    ptr++;
 1424: 		}
 1425: 	    }
 1426: 	}
 1427: 	if (ptr != 0) {
 1428: 	    var sense = ptr == 1 ? ": " : "s: ";
 1429: 	    var prolist = "";
 1430: 	    if (ptr == 1) {
 1431: 		prolist = noscore[0];
 1432: 	    } else {
 1433: 		var i = 0;
 1434: 		while (i < ptr-1) {
 1435: 		    prolist += noscore[i]+", ";
 1436: 		    i++;
 1437: 		}
 1438: 		prolist += "and "+noscore[i];
 1439: 	    }
 1440: 	    var resp = confirm("You did not assign any score for the following problem"+sense+prolist+". Continue?");
 1441: 	    if (resp == false) {
 1442: 		return false;
 1443: 	    }
 1444: 	}
 1445: 
 1446: 	formname.submit();
 1447:     }
 1448: SUBJAVASCRIPT
 1449: }
 1450: 
 1451: #--- javascript for essay type problem --
 1452: sub sub_page_kw_js {
 1453:     my $request = shift;
 1454:     my $iconpath = $request->dir_config('lonIconsURL');
 1455:     &commonJSfunctions($request);
 1456: 
 1457:     my $inner_js_msg_central= (<<INNERJS);
 1458: <script type="text/javascript">
 1459:     function checkInput() {
 1460:       opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);
 1461:       var nmsg   = opener.document.SCORE.savemsgN.value;
 1462:       var usrctr = document.msgcenter.usrctr.value;
 1463:       var newval = opener.document.SCORE["newmsg"+usrctr];
 1464:       newval.value = opener.checkEntities(document.msgcenter.newmsg.value);
 1465: 
 1466:       var msgchk = "";
 1467:       if (document.msgcenter.subchk.checked) {
 1468:          msgchk = "msgsub,";
 1469:       }
 1470:       var includemsg = 0;
 1471:       for (var i=1; i<=nmsg; i++) {
 1472:           var opnmsg = opener.document.SCORE["savemsg"+i];
 1473:           var frmmsg = document.msgcenter["msg"+i];
 1474:           opnmsg.value = opener.checkEntities(frmmsg.value);
 1475:           var showflg = opener.document.SCORE["shownOnce"+i];
 1476:           showflg.value = "1";
 1477:           var chkbox = document.msgcenter["msgn"+i];
 1478:           if (chkbox.checked) {
 1479:              msgchk += "savemsg"+i+",";
 1480:              includemsg = 1;
 1481:           }
 1482:       }
 1483:       if (document.msgcenter.newmsgchk.checked) {
 1484:          msgchk += "newmsg"+usrctr;
 1485:          includemsg = 1;
 1486:       }
 1487:       imgformname = opener.document.SCORE["mailicon"+usrctr];
 1488:       imgformname.src = "$iconpath/"+((includemsg) ? "mailto.gif" : "mailbkgrd.gif");
 1489:       var includemsg = opener.document.SCORE["includemsg"+usrctr];
 1490:       includemsg.value = msgchk;
 1491: 
 1492:       self.close()
 1493: 
 1494:     }
 1495: </script>
 1496: INNERJS
 1497: 
 1498:     my $inner_js_highlight_central= (<<INNERJS);
 1499: <script type="text/javascript">
 1500:     function updateChoice(flag) {
 1501:       opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);
 1502:       opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);
 1503:       opener.document.SCORE.kwstyle.value = opener.radioSelection(document.hlCenter.kwdstyle);
 1504:       opener.document.SCORE.refresh.value = "on";
 1505:       if (opener.document.SCORE.keywords.value!=""){
 1506:          opener.document.SCORE.submit();
 1507:       }
 1508:       self.close()
 1509:     }
 1510: </script>
 1511: INNERJS
 1512: 
 1513:     my $start_page_msg_central = 
 1514:         &Apache::loncommon::start_page('Message Central',$inner_js_msg_central,
 1515: 				       {'js_ready'  => 1,
 1516: 					'only_body' => 1,
 1517: 					'bgcolor'   =>'#FFFFFF',});
 1518:     my $end_page_msg_central = 
 1519: 	&Apache::loncommon::end_page({'js_ready' => 1});
 1520: 
 1521: 
 1522:     my $start_page_highlight_central = 
 1523:         &Apache::loncommon::start_page('Highlight Central',
 1524: 				       $inner_js_highlight_central,
 1525: 				       {'js_ready'  => 1,
 1526: 					'only_body' => 1,
 1527: 					'bgcolor'   =>'#FFFFFF',});
 1528:     my $end_page_highlight_central = 
 1529: 	&Apache::loncommon::end_page({'js_ready' => 1});
 1530: 
 1531:     my $docopen=&Apache::lonhtmlcommon::javascript_docopen();
 1532:     $docopen=~s/^document\.//;
 1533:     my %js_lt = &Apache::lonlocal::texthash(
 1534:                 keyw => 'Keywords list, separated by a space. Add/delete to list if desired.',
 1535:                 plse => 'Please select a word or group of words from document and then click this link.',
 1536:                 adds => 'Add selection to keyword list? Edit if desired.',
 1537:                 col1 => 'red',
 1538:                 col2 => 'green',
 1539:                 col3 => 'blue',
 1540:                 siz1 => 'normal',
 1541:                 siz2 => '+1',
 1542:                 siz3 => '+2',
 1543:                 sty1 => 'normal',
 1544:                 sty2 => 'italic',
 1545:                 sty3 => 'bold',
 1546:              );
 1547:     my %html_js_lt = &Apache::lonlocal::texthash(
 1548:                 comp => 'Compose Message for: ',
 1549:                 incl => 'Include',
 1550:                 type => 'Type',
 1551:                 subj => 'Subject',
 1552:                 mesa => 'Message',
 1553:                 new  => 'New',
 1554:                 save => 'Save',
 1555:                 canc => 'Cancel',
 1556:                 kehi => 'Keyword Highlight Options',
 1557:                 txtc => 'Text Color',
 1558:                 font => 'Font Size',
 1559:                 fnst => 'Font Style',
 1560:              );
 1561:     &js_escape(\%js_lt);
 1562:     &html_escape(\%html_js_lt);
 1563:     &js_escape(\%html_js_lt);
 1564:     $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
 1565: 
 1566: //===================== Show list of keywords ====================
 1567:   function keywords(formname) {
 1568:     var nret = prompt("$js_lt{'keyw'}",formname.keywords.value);
 1569:     if (nret==null) return;
 1570:     formname.keywords.value = nret;
 1571: 
 1572:     if (formname.keywords.value != "") {
 1573: 	formname.refresh.value = "on";
 1574: 	formname.submit();
 1575:     }
 1576:     return;
 1577:   }
 1578: 
 1579: //===================== Script to view submitted by ==================
 1580:   function viewSubmitter(submitter) {
 1581:     document.SCORE.refresh.value = "on";
 1582:     document.SCORE.NCT.value = "1";
 1583:     document.SCORE.unamedom0.value = submitter;
 1584:     document.SCORE.submit();
 1585:     return;
 1586:   }
 1587: 
 1588: //===================== Script to add keyword(s) ==================
 1589:   function getSel() {
 1590:     if (document.getSelection) txt = document.getSelection();
 1591:     else if (document.selection) txt = document.selection.createRange().text;
 1592:     else return;
 1593:     var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");
 1594:     if (cleantxt=="") {
 1595: 	alert("$js_lt{'plse'}");
 1596: 	return;
 1597:     }
 1598:     var nret = prompt("$js_lt{'adds'}",cleantxt);
 1599:     if (nret==null) return;
 1600:     document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
 1601:     if (document.SCORE.keywords.value != "") {
 1602: 	document.SCORE.refresh.value = "on";
 1603: 	document.SCORE.submit();
 1604:     }
 1605:     return;
 1606:   }
 1607: 
 1608: //====================== Script for composing message ==============
 1609:    // preload images
 1610:    img1 = new Image();
 1611:    img1.src = "$iconpath/mailbkgrd.gif";
 1612:    img2 = new Image();
 1613:    img2.src = "$iconpath/mailto.gif";
 1614: 
 1615:   function msgCenter(msgform,usrctr,fullname) {
 1616:     var Nmsg  = msgform.savemsgN.value;
 1617:     savedMsgHeader(Nmsg,usrctr,fullname);
 1618:     var subject = msgform.msgsub.value;
 1619:     var msgchk = document.SCORE["includemsg"+usrctr].value;
 1620:     re = /msgsub/;
 1621:     var shwsel = "";
 1622:     if (re.test(msgchk)) { shwsel = "checked" }
 1623:     subject = (document.SCORE.shownSub.value == 0 ? checkEntities(subject) : subject);
 1624:     displaySubject(checkEntities(subject),shwsel);
 1625:     for (var i=1; i<=Nmsg; i++) {
 1626: 	var testmsg = "savemsg"+i+",";
 1627: 	re = new RegExp(testmsg,"g");
 1628: 	shwsel = "";
 1629: 	if (re.test(msgchk)) { shwsel = "checked" }
 1630: 	var message = document.SCORE["savemsg"+i].value;
 1631: 	message = (document.SCORE["shownOnce"+i].value == 0 ? checkEntities(message) : message);
 1632: 	displaySavedMsg(i,message,shwsel); //I do not get it. w/o checkEntities on saved messages,
 1633: 	                                   //any &lt; is already converted to <, etc. However, only once!!
 1634:     }
 1635:     newmsg = document.SCORE["newmsg"+usrctr].value;
 1636:     shwsel = "";
 1637:     re = /newmsg/;
 1638:     if (re.test(msgchk)) { shwsel = "checked" }
 1639:     newMsg(newmsg,shwsel);
 1640:     msgTail(); 
 1641:     return;
 1642:   }
 1643: 
 1644:   function checkEntities(strx) {
 1645:     if (strx.length == 0) return strx;
 1646:     var orgStr = ["&", "<", ">", '"']; 
 1647:     var newStr = ["&amp;", "&lt;", "&gt;", "&quot;"];
 1648:     var counter = 0;
 1649:     while (counter < 4) {
 1650: 	strx = strReplace(strx,orgStr[counter],newStr[counter]);
 1651: 	counter++;
 1652:     }
 1653:     return strx;
 1654:   }
 1655: 
 1656:   function strReplace(strx, orgStr, newStr) {
 1657:     return strx.split(orgStr).join(newStr);
 1658:   }
 1659: 
 1660:   function savedMsgHeader(Nmsg,usrctr,fullname) {
 1661:     var height = 70*Nmsg+250;
 1662:     if (height > 600) {
 1663: 	height = 600;
 1664:     }
 1665:     var xpos = (screen.width-600)/2;
 1666:     xpos = (xpos < 0) ? '0' : xpos;
 1667:     var ypos = (screen.height-height)/2-30;
 1668:     ypos = (ypos < 0) ? '0' : ypos;
 1669: 
 1670:     pWin = window.open('', 'MessageCenter', 'resizable=yes,toolbar=no,location=no,scrollbars=yes,screenx='+xpos+',screeny='+ypos+',width=700,height='+height);
 1671:     pWin.focus();
 1672:     pDoc = pWin.document;
 1673:     pDoc.$docopen;
 1674:     pDoc.write('$start_page_msg_central');
 1675: 
 1676:     pDoc.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
 1677:     pDoc.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
 1678:     pDoc.write("<h1>&nbsp;$html_js_lt{'comp'}\"+fullname+\"<\\/h1>");
 1679: 
 1680:     pDoc.write('<table style="border:1px solid black;"><tr>');
 1681:     pDoc.write("<td><b>$html_js_lt{'incl'}<\\/b><\\/td><td><b>$html_js_lt{'type'}<\\/b><\\/td><td><b>$html_js_lt{'mesa'}<\\/td><\\/tr>");
 1682: }
 1683:     function displaySubject(msg,shwsel) {
 1684:     pDoc = pWin.document;
 1685:     pDoc.write("<tr>");
 1686:     pDoc.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1687:     pDoc.write("<td>$html_js_lt{'subj'}<\\/td>");
 1688:     pDoc.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"40\\" maxlength=\\"80\\"><\\/td><\\/tr>");
 1689: }
 1690: 
 1691:   function displaySavedMsg(ctr,msg,shwsel) {
 1692:     pDoc = pWin.document;
 1693:     pDoc.write("<tr>");
 1694:     pDoc.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1695:     pDoc.write("<td align=\\"center\\">"+ctr+"<\\/td>");
 1696:     pDoc.write("<td><textarea name=\\"msg"+ctr+"\\" cols=\\"60\\" rows=\\"3\\">"+msg+"<\\/textarea><\\/td><\\/tr>");
 1697: }
 1698: 
 1699:   function newMsg(newmsg,shwsel) {
 1700:     pDoc = pWin.document;
 1701:     pDoc.write("<tr>");
 1702:     pDoc.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1703:     pDoc.write("<td align=\\"center\\">$html_js_lt{'new'}<\\/td>");
 1704:     pDoc.write("<td><textarea name=\\"newmsg\\" cols=\\"60\\" rows=\\"3\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" >"+newmsg+"<\\/textarea><\\/td><\\/tr>");
 1705: }
 1706: 
 1707:   function msgTail() {
 1708:     pDoc = pWin.document;
 1709:     //pDoc.write("<\\/table>");
 1710:     pDoc.write("<\\/td><\\/tr><\\/table>&nbsp;");
 1711:     pDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'save'}\\" onclick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
 1712:     pDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'canc'}\\" onclick=\\"self.close()\\"><br /><br />");
 1713:     pDoc.write("<\\/form>");
 1714:     pDoc.write('$end_page_msg_central');
 1715:     pDoc.close();
 1716: }
 1717: 
 1718: //====================== Script for keyword highlight options ==============
 1719:   function kwhighlight() {
 1720:     var kwclr    = document.SCORE.kwclr.value;
 1721:     var kwsize   = document.SCORE.kwsize.value;
 1722:     var kwstyle  = document.SCORE.kwstyle.value;
 1723:     var redsel = "";
 1724:     var grnsel = "";
 1725:     var blusel = "";
 1726:     var txtcol1 = "$js_lt{'col1'}";
 1727:     var txtcol2 = "$js_lt{'col2'}";
 1728:     var txtcol3 = "$js_lt{'col3'}";
 1729:     var txtsiz1 = "$js_lt{'siz1'}";
 1730:     var txtsiz2 = "$js_lt{'siz2'}";
 1731:     var txtsiz3 = "$js_lt{'siz3'}";
 1732:     var txtsty1 = "$js_lt{'sty1'}";
 1733:     var txtsty2 = "$js_lt{'sty2'}";
 1734:     var txtsty3 = "$js_lt{'sty3'}";
 1735:     if (kwclr=="red")   {var redsel="checked='checked'"};
 1736:     if (kwclr=="green") {var grnsel="checked='checked'"};
 1737:     if (kwclr=="blue")  {var blusel="checked='checked'"};
 1738:     var sznsel = "";
 1739:     var sz1sel = "";
 1740:     var sz2sel = "";
 1741:     if (kwsize=="0")  {var sznsel="checked='checked'"};
 1742:     if (kwsize=="+1") {var sz1sel="checked='checked'"};
 1743:     if (kwsize=="+2") {var sz2sel="checked='checked'"};
 1744:     var synsel = "";
 1745:     var syisel = "";
 1746:     var sybsel = "";
 1747:     if (kwstyle=="")    {var synsel="checked='checked'"};
 1748:     if (kwstyle=="<i>") {var syisel="checked='checked'"};
 1749:     if (kwstyle=="<b>") {var sybsel="checked='checked'"};
 1750:     highlightCentral();
 1751:     highlightbody('red',txtcol1,redsel,'0',txtsiz1,sznsel,'',txtsty1,synsel);
 1752:     highlightbody('green',txtcol2,grnsel,'+1',txtsiz2,sz1sel,'<i>',txtsty2,syisel);
 1753:     highlightbody('blue',txtcol3,blusel,'+2',txtsiz3,sz2sel,'<b>',txtsty3,sybsel);
 1754:     highlightend();
 1755:     return;
 1756:   }
 1757: 
 1758:   function highlightCentral() {
 1759: //    if (window.hwdWin) window.hwdWin.close();
 1760:     var xpos = (screen.width-400)/2;
 1761:     xpos = (xpos < 0) ? '0' : xpos;
 1762:     var ypos = (screen.height-330)/2-30;
 1763:     ypos = (ypos < 0) ? '0' : ypos;
 1764: 
 1765:     hwdWin = window.open('', 'KeywordHighlightCentral', 'resizeable=yes,toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
 1766:     hwdWin.focus();
 1767:     var hDoc = hwdWin.document;
 1768:     hDoc.$docopen;
 1769:     hDoc.write('$start_page_highlight_central');
 1770:     hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
 1771:     hDoc.write("<h1>$html_js_lt{'kehi'}<\\/h1>");
 1772: 
 1773:     hDoc.write('<table border="0" width="100%"><tr style="background-color:#A1D676">');
 1774:     hDoc.write("<th>$html_js_lt{'txtc'}<\\/th><th>$html_js_lt{'font'}<\\/th><th>$html_js_lt{'fnst'}<\\/th><\\/tr>");
 1775:   }
 1776: 
 1777:   function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) { 
 1778:     var hDoc = hwdWin.document;
 1779:     hDoc.write("<tr>");
 1780:     hDoc.write("<td align=\\"left\\">");
 1781:     hDoc.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+" \\/>&nbsp;"+clrtxt+"<\\/td>");
 1782:     hDoc.write("<td align=\\"left\\">");
 1783:     hDoc.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+" \\/>&nbsp;"+sztxt+"<\\/td>");
 1784:     hDoc.write("<td align=\\"left\\">");
 1785:     hDoc.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+" \\/>&nbsp;"+sytxt+"<\\/td>");
 1786:     hDoc.write("<\\/tr>");
 1787:   }
 1788: 
 1789:   function highlightend() { 
 1790:     var hDoc = hwdWin.document;
 1791:     hDoc.write("<\\/table><br \\/>");
 1792:     hDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'save'}\\" onclick=\\"javascript:updateChoice(1)\\" \\/>&nbsp;&nbsp;");
 1793:     hDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'canc'}\\" onclick=\\"self.close()\\" \\/><br /><br />");
 1794:     hDoc.write("<\\/form>");
 1795:     hDoc.write('$end_page_highlight_central');
 1796:     hDoc.close();
 1797:   }
 1798: 
 1799: SUBJAVASCRIPT
 1800: }
 1801: 
 1802: sub get_increment {
 1803:     my $increment = $env{'form.increment'};
 1804:     if ($increment != 1 && $increment != .5 && $increment != .25 &&
 1805:         $increment != .1) {
 1806:         $increment = 1;
 1807:     }
 1808:     return $increment;
 1809: }
 1810: 
 1811: sub gradeBox_start {
 1812:     return (
 1813:         &Apache::loncommon::start_data_table()
 1814:        .&Apache::loncommon::start_data_table_header_row()
 1815:        .'<th>'.&mt('Part').'</th>'
 1816:        .'<th>'.&mt('Points').'</th>'
 1817:        .'<th>&nbsp;</th>'
 1818:        .'<th>'.&mt('Assign Grade').'</th>'
 1819:        .'<th>'.&mt('Weight').'</th>'
 1820:        .'<th>'.&mt('Grade Status').'</th>'
 1821:        .&Apache::loncommon::end_data_table_header_row()
 1822:     );
 1823: }
 1824: 
 1825: sub gradeBox_end {
 1826:     return (
 1827:         &Apache::loncommon::end_data_table()
 1828:     );
 1829: }
 1830: #--- displays the grading box, used in essay type problem and grading by page/sequence
 1831: sub gradeBox {
 1832:     my ($request,$symb,$uname,$udom,$counter,$partid,$record) = @_;
 1833:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 1834: 	'" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
 1835:     my $wgt    = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb,$udom,$uname);
 1836:     my $wgtmsg = ($wgt > 0) ? &mt('(problem weight)') 
 1837:                            : '<span class="LC_info">'.&mt('problem weight assigned by computer').'</span>';
 1838:     $wgt       = ($wgt > 0 ? $wgt : '1');
 1839:     my $score  = ($$record{'resource.'.$partid.'.awarded'} eq '' ?
 1840: 		  '' : &compute_points($$record{'resource.'.$partid.'.awarded'},$wgt));
 1841:     my $data_WGT='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
 1842:     my $display_part= &get_display_part($partid,$symb);
 1843:     my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
 1844: 				       [$partid]);
 1845:     my $aggtries = $$record{'resource.'.$partid.'.tries'};
 1846:     if ($last_resets{$partid}) {
 1847:         $aggtries = &get_num_tries($record,$last_resets{$partid},$partid);
 1848:     }
 1849:     my $result=&Apache::loncommon::start_data_table_row();
 1850:     my $ctr = 0;
 1851:     my $thisweight = 0;
 1852:     my $increment = &get_increment();
 1853: 
 1854:     my $radio.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
 1855:     while ($thisweight<=$wgt) {
 1856: 	$radio.= '<td><span class="LC_nobreak"><label><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
 1857:         'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
 1858: 	    $thisweight.')" value="'.$thisweight.'" '.
 1859: 	    ($score eq $thisweight ? 'checked="checked"':'').' /> '.$thisweight."</label></span></td>\n";
 1860: 	$radio.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
 1861:         $thisweight += $increment;
 1862: 	$ctr++;
 1863:     }
 1864:     $radio.='</tr></table>';
 1865: 
 1866:     my $line.='<input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
 1867: 	($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
 1868: 	'onchange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
 1869: 	$wgt.')" /></td>'."\n";
 1870:     $line.='<td>/'.$wgt.' '.$wgtmsg.
 1871: 	($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
 1872: 	' </td>'."\n";
 1873:     $line.='<td><select name="GD_SEL'.$counter.'_'.$partid.'" '.
 1874: 	'onchange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
 1875:     if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
 1876: 	$line.='<option></option>'.
 1877: 	    '<option value="excused" selected="selected">'.&mt('excused').'</option>';
 1878:     } else {
 1879: 	$line.='<option selected="selected"></option>'.
 1880: 	    '<option value="excused" >'.&mt('excused').'</option>';
 1881:     }
 1882:     $line.='<option value="reset status">'.&mt('reset status').'</option></select>'."\n";
 1883: 
 1884: 
 1885:     $result .= 
 1886: 	    '<td>'.$data_WGT.$display_part.'</td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>';
 1887:     $result.=&Apache::loncommon::end_data_table_row();
 1888:     $result.=&Apache::loncommon::start_data_table_row().'<td colspan="6">';
 1889:     $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
 1890: 	'<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
 1891: 	'<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
 1892: 	$$record{'resource.'.$partid.'.solved'}.'" />'."\n".
 1893:         '<input type="hidden" name="totaltries'.$counter.'_'.$partid.'" value="'.
 1894:         $$record{'resource.'.$partid.'.tries'}.'" />'."\n".
 1895:         '<input type="hidden" name="aggtries'.$counter.'_'.$partid.'" value="'.
 1896:         $aggtries.'" />'."\n";
 1897:     my $res_error;
 1898:     $result.=&handback_box($symb,$uname,$udom,$counter,$partid,$record,\$res_error);
 1899:     $result.='</td>'.&Apache::loncommon::end_data_table_row();
 1900:     if ($res_error) {
 1901:         return &navmap_errormsg();
 1902:     }
 1903:     return $result;
 1904: }
 1905: 
 1906: sub handback_box {
 1907:     my ($symb,$uname,$udom,$counter,$partid,$record,$res_error_pointer) = @_;
 1908:     my ($partlist,$handgrade,$responseType) = &response_type($symb,$res_error_pointer);
 1909:     my (@respids);
 1910:     my @part_response_id = &flatten_responseType($responseType);
 1911:     foreach my $part_response_id (@part_response_id) {
 1912:     	my ($part,$resp) = @{ $part_response_id };
 1913:         if ($part eq $partid) {
 1914:             push(@respids,$resp);
 1915:         }
 1916:     }
 1917:     my $result;
 1918:     foreach my $respid (@respids) {
 1919: 	my $prefix = $counter.'_'.$partid.'_'.$respid.'_';
 1920: 	my $files=&get_submitted_files($udom,$uname,$partid,$respid,$record);
 1921: 	next if (!@$files);
 1922: 	my $file_counter = 0;
 1923: 	foreach my $file (@$files) {
 1924: 	    if ($file =~ /\/portfolio\//) {
 1925:                 $file_counter++;
 1926:     	        my ($file_path, $file_disp) = ($file =~ m|(.+/)(.+)$|);
 1927:     	        my ($name,$version,$ext) = &Apache::lonnet::file_name_version_ext($file_disp);
 1928:     	        $file_disp = "$name.$ext";
 1929:     	        $file = $file_path.$file_disp;
 1930:     	        $result.=&mt('Return commented version of [_1] to student.',
 1931:     			 '<span class="LC_filename">'.$file_disp.'</span>');
 1932:     	        $result.='<input type="file"   name="'.$prefix.'returndoc'.$file_counter.'" />'."\n";
 1933:     	        $result.='<input type="hidden" name="'.$prefix.'origdoc'.$file_counter.'" value="'.$file.'" /><br />'."\n";
 1934: 	    }
 1935: 	}
 1936:         if ($file_counter) {
 1937:             $result .= '<input type="hidden" name="'.$prefix.'countreturndoc" value="'.$file_counter.'" />'."\n".
 1938:                        '<span class="LC_info">'.
 1939:                        '('.&mt('File(s) will be uploaded when you click on Save &amp; Next below.',$file_counter).')</span><br /><br />';
 1940:         }
 1941:     }
 1942:     return $result;    
 1943: }
 1944: 
 1945: sub show_problem {
 1946:     my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode,$form) = @_;
 1947:     my $rendered;
 1948:     my %form = ((ref($form) eq 'HASH')? %{$form} : ());
 1949:     &Apache::lonxml::remember_problem_counter();
 1950:     if ($mode eq 'both' or $mode eq 'text') {
 1951: 	$rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
 1952: 						       $env{'request.course.id'},
 1953: 						       undef,\%form);
 1954:     }
 1955:     if ($removeform) {
 1956: 	$rendered=~s|<form(.*?)>||g;
 1957: 	$rendered=~s|</form>||g;
 1958: 	$rendered=~s|(<input[^>]*name\s*=\s*"?)(\w+)("?)|$1would_have_been_$2$3|g;
 1959:     }
 1960:     my $companswer;
 1961:     if ($mode eq 'both' or $mode eq 'answer') {
 1962: 	&Apache::lonxml::restore_problem_counter();
 1963: 	$companswer=
 1964: 	    &Apache::loncommon::get_student_answers($symb,$uname,$udom,
 1965: 						    $env{'request.course.id'},
 1966: 						    %form);
 1967:     }
 1968:     if ($removeform) {
 1969: 	$companswer=~s|<form(.*?)>||g;
 1970: 	$companswer=~s|</form>||g;
 1971: 	$companswer=~s|name="submit"|name="would_have_been_submit"|g;
 1972:     }
 1973:     my $renderheading = &mt('View of the problem');
 1974:     my $answerheading = &mt('Correct answer');
 1975:     if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
 1976:         my $stu_fullname = $env{'form.fullname'};
 1977:         if ($stu_fullname eq '') {
 1978:             $stu_fullname = &Apache::loncommon::plainname($uname,$udom,'lastname');
 1979:         }
 1980:         my $forwhom = &nameUserString(undef,$stu_fullname,$uname,$udom);
 1981:         if ($forwhom ne '') {
 1982:             $renderheading = &mt('View of the problem for[_1]',$forwhom);
 1983:             $answerheading = &mt('Correct answer for[_1]',$forwhom);
 1984:         }
 1985:     }
 1986:     $rendered=
 1987:         '<div class="LC_Box">'
 1988:        .'<h3 class="LC_hcell">'.$renderheading.'</h3>'
 1989:        .$rendered
 1990:        .'</div>';
 1991:     $companswer=
 1992:         '<div class="LC_Box">'
 1993:        .'<h3 class="LC_hcell">'.$answerheading.'</h3>'
 1994:        .$companswer
 1995:        .'</div>';
 1996:     my $result;
 1997:     if ($mode eq 'both') {
 1998:         $result=$rendered.$companswer;
 1999:     } elsif ($mode eq 'text') {
 2000:         $result=$rendered;
 2001:     } elsif ($mode eq 'answer') {
 2002:         $result=$companswer;
 2003:     }
 2004:     return $result;
 2005: }
 2006: 
 2007: sub files_exist {
 2008:     my ($r, $symb) = @_;
 2009:     my @students = &Apache::loncommon::get_env_multiple('form.stuinfo');
 2010:     foreach my $student (@students) {
 2011:         my ($uname,$udom,$fullname) = split(/:/,$student);
 2012:         my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
 2013: 					      $udom,$uname);
 2014:         my ($string,$timestamp)= &get_last_submission(\%record);
 2015:         foreach my $submission (@$string) {
 2016:             my ($partid,$respid) =
 2017: 		($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
 2018:             my $files=&get_submitted_files($udom,$uname,$partid,$respid,
 2019: 					   \%record);
 2020:             return 1 if (@$files);
 2021:         }
 2022:     }
 2023:     return 0;
 2024: }
 2025: 
 2026: sub download_all_link {
 2027:     my ($r,$symb) = @_;
 2028:     unless (&files_exist($r, $symb)) {
 2029:        $r->print(&mt('There are currently no submitted documents.'));
 2030:        return;
 2031:     }
 2032:     my $all_students = 
 2033: 	join("\n", &Apache::loncommon::get_env_multiple('form.stuinfo'));
 2034: 
 2035:     my $parts =
 2036: 	join("\n",&Apache::loncommon::get_env_multiple('form.vPart'));
 2037: 
 2038:     my $identifier = &Apache::loncommon::get_cgi_id();
 2039:     &Apache::lonnet::appenv({'cgi.'.$identifier.'.students' => $all_students,
 2040:                              'cgi.'.$identifier.'.symb' => $symb,
 2041:                              'cgi.'.$identifier.'.parts' => $parts,});
 2042:     $r->print('<a href="/cgi-bin/multidownload.pl?'.$identifier.'">'.
 2043: 	      &mt('Download All Submitted Documents').'</a>');
 2044:     return;
 2045: }
 2046: 
 2047: sub submit_download_link {
 2048:     my ($request,$symb) = @_;
 2049:     if (!$symb) { return ''; }
 2050: #FIXME: Figure out which type of problem this is and provide appropriate download
 2051:     my $res_error;
 2052:     my ($partlist,$handgrade,$responseType) = &response_type($symb,$res_error);
 2053:     if (ref($res_error)) {
 2054:         if ($$res_error) {
 2055:             $request->print(&mt('An error occurred retrieving response types'));
 2056:             return;
 2057:         }
 2058:     }
 2059:     my ($numupload,$numessay) = (0,0);
 2060:     if (ref($responseType) eq 'HASH') {
 2061:         foreach my $part (sort(keys(%$responseType))) {
 2062:             foreach my $id (sort(keys(%{ $responseType->{$part} }))) {
 2063:                 my $responsetype = $responseType->{$part}->{$id};
 2064:                 if ($responsetype eq 'essay') {
 2065:                     my $uploadedfiletypes =
 2066:                         &Apache::lonnet::EXT("resource.$part".'_'."$id.uploadedfiletypes",$symb);
 2067:                     if ($uploadedfiletypes) {
 2068:                         $numupload++;
 2069:                     } else {
 2070:                         $numessay++;
 2071:                     }
 2072:                 }
 2073:             }
 2074:         }
 2075:     }
 2076:     if (($numupload) || ($numessay)) {
 2077:         my $submitonly= $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
 2078:         my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 2079:         my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
 2080:         (undef,undef,my $fullname) = &getclasslist($getsec,1,$getgroup,$symb,$submitonly,1);
 2081:         if (ref($fullname) eq 'HASH') {
 2082:             my @students = map { $_.':'.$fullname->{$_} } (keys(%{$fullname}));
 2083:             if (@students) {
 2084:                 @{$env{'form.stuinfo'}} = @students;
 2085:                 if ($numupload) {
 2086:                     &download_all_link($request,$symb);
 2087:                 }
 2088: # FIXME Need to provide a mechanism to download essays, i.e., if $numessay > 0
 2089: # Needs to omit user's identity if resource instance is for an anonymous survey.
 2090:             } else {
 2091:                 $request->print(&mt('No students match the criteria you selected'));
 2092:             }
 2093:         } else {
 2094:             $request->print(&mt('Could not retrieve student information'));
 2095:         }
 2096:     } else {
 2097:         $request->print(&mt('No essayresponse items found'));
 2098:     }
 2099:     return;
 2100: }
 2101: 
 2102: sub build_section_inputs {
 2103:     my $section_inputs;
 2104:     if ($env{'form.section'} eq '') {
 2105:         $section_inputs .= '<input type="hidden" name="section" value="all" />'."\n";
 2106:     } else {
 2107:         my @sections = &Apache::loncommon::get_env_multiple('form.section');
 2108:         foreach my $section (@sections) {
 2109:             $section_inputs .= '<input type="hidden" name="section" value="'.$section.'" />'."\n";
 2110:         }
 2111:     }
 2112:     return $section_inputs;
 2113: }
 2114: 
 2115: # --------------------------- show submissions of a student, option to grade 
 2116: sub submission {
 2117:     my ($request,$counter,$total,$symb) = @_;
 2118:     my ($uname,$udom)     = ($env{'form.student'},$env{'form.userdom'});
 2119:     $udom = ($udom eq '' ? $env{'user.domain'} : $udom); #has form.userdom changed for a student?
 2120:     my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
 2121:     $env{'form.fullname'} = &Apache::loncommon::plainname($uname,$udom,'lastname') if $env{'form.fullname'} eq '';
 2122: 
 2123:     my $probtitle=&Apache::lonnet::gettitle($symb); 
 2124:     if ($symb eq '') { $request->print("Unable to handle ambiguous references:."); return ''; }
 2125:     my $is_tool = ($symb =~ /ext\.tool$/);
 2126:     my ($essayurl,%coursedesc_by_cid);
 2127: 
 2128:     if (!&canview($usec)) {
 2129:         $request->print(
 2130:             '<span class="LC_warning">'.
 2131:             &mt('Unable to view requested student.').
 2132:             ' '.&mt('([_1] in section [_2] in course id [_3])',
 2133:                         $uname.':'.$udom,$usec,$env{'request.course.id'}).
 2134:             '</span>');
 2135: 	return;
 2136:     }
 2137: 
 2138:     if (!$env{'form.lastSub'}) { $env{'form.lastSub'} = 'datesub'; }
 2139:     unless ($is_tool) { 
 2140:         if (!$env{'form.vProb'}) { $env{'form.vProb'} = 'yes'; }
 2141:         if (!$env{'form.vAns'}) { $env{'form.vAns'} = 'yes'; }
 2142:     }
 2143:     my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
 2144:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 2145: 	'" src="'.$request->dir_config('lonIconsURL').
 2146: 	'/check.gif" height="16" border="0" />';
 2147: 
 2148:     # header info
 2149:     if ($counter == 0) {
 2150: 	&sub_page_js($request);
 2151: 	&sub_page_kw_js($request);
 2152: 
 2153: 	# option to display problem, only once else it cause problems 
 2154:         # with the form later since the problem has a form.
 2155: 	if ($env{'form.vProb'} eq 'yes' or $env{'form.vAns'} eq 'yes') {
 2156: 	    my $mode;
 2157: 	    if ($env{'form.vProb'} eq 'yes' && $env{'form.vAns'} eq 'yes') {
 2158: 		$mode='both';
 2159: 	    } elsif ($env{'form.vProb'} eq 'yes') {
 2160: 		$mode='text';
 2161: 	    } elsif ($env{'form.vAns'} eq 'yes') {
 2162: 		$mode='answer';
 2163: 	    }
 2164: 	    &Apache::lonxml::clear_problem_counter();
 2165: 	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1,$mode));
 2166: 	}
 2167: 
 2168: 	# kwclr is the only variable that is guaranteed not to be blank 
 2169:         # if this subroutine has been called once.
 2170: 	my %keyhash = ();
 2171: #	if ($env{'form.kwclr'} eq '' && $env{'form.handgrade'} eq 'yes') {
 2172:         if (1) {
 2173: 	    %keyhash = &Apache::lonnet::dump('nohist_handgrade',
 2174: 					     $env{'course.'.$env{'request.course.id'}.'.domain'},
 2175: 					     $env{'course.'.$env{'request.course.id'}.'.num'});
 2176: 
 2177: 	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
 2178: 	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
 2179: 	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
 2180: 	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
 2181: 	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
 2182: 	    $env{'form.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ? 
 2183: 		$keyhash{$symb.'_subject'} : $probtitle;
 2184: 	    $env{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
 2185: 	}
 2186: 	my $overRideScore = $env{'form.overRideScore'} eq '' ? 'no' : $env{'form.overRideScore'};
 2187: 	my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 2188: 	$request->print('<form action="/adm/grades" method="post" name="SCORE" enctype="multipart/form-data">'."\n".
 2189: 			'<input type="hidden" name="command"    value="handgrade" />'."\n".
 2190: 			'<input type="hidden" name="Status"     value="'.$stu_status.'" />'."\n".
 2191: 			'<input type="hidden" name="overRideScore" value="'.$overRideScore.'" />'."\n".
 2192: 			'<input type="hidden" name="refresh"    value="off" />'."\n".
 2193: 			'<input type="hidden" name="studentNo"  value="" />'."\n".
 2194: 			'<input type="hidden" name="gradeOpt"   value="" />'."\n".
 2195: 			'<input type="hidden" name="symb"       value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 2196: 			'<input type="hidden" name="vProb"      value="'.$env{'form.vProb'}.'" />'."\n".
 2197: 			'<input type="hidden" name="vAns"       value="'.$env{'form.vAns'}.'" />'."\n".
 2198: 			'<input type="hidden" name="lastSub"    value="'.$env{'form.lastSub'}.'" />'."\n".
 2199: 			&build_section_inputs().
 2200: 			'<input type="hidden" name="submitonly" value="'.$env{'form.submitonly'}.'" />'."\n".
 2201: 			'<input type="hidden" name="NCT"'.
 2202: 			' value="'.($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : $total+1).'" />'."\n");
 2203: #	if ($env{'form.handgrade'} eq 'yes') {
 2204:         if (1) {
 2205: 	    $request->print('<input type="hidden" name="keywords" value="'.$env{'form.keywords'}.'" />'."\n".
 2206: 			    '<input type="hidden" name="kwclr"    value="'.$env{'form.kwclr'}.'" />'."\n".
 2207: 			    '<input type="hidden" name="kwsize"   value="'.$env{'form.kwsize'}.'" />'."\n".
 2208: 			    '<input type="hidden" name="kwstyle"  value="'.$env{'form.kwstyle'}.'" />'."\n".
 2209: 			    '<input type="hidden" name="msgsub"   value="'.$env{'form.msgsub'}.'" />'."\n".
 2210: 			    '<input type="hidden" name="shownSub" value="0" />'."\n".
 2211: 			    '<input type="hidden" name="savemsgN" value="'.$env{'form.savemsgN'}.'" />'."\n");
 2212: 	    foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
 2213: 		$request->print('<input type="hidden" name="vPart" value="'.$partid.'" />'."\n");
 2214: 	    }
 2215: 	}
 2216: 	
 2217: 	my ($cts,$prnmsg) = (1,'');
 2218: 	while ($cts <= $env{'form.savemsgN'}) {
 2219: 	    $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
 2220: 		(!exists($keyhash{$symb.'_savemsg'.$cts}) ? 
 2221: 		 &Apache::lonfeedback::clear_out_html($env{'form.savemsg'.$cts}) :
 2222: 		 &Apache::lonfeedback::clear_out_html($keyhash{$symb.'_savemsg'.$cts})).
 2223: 		'" />'."\n".
 2224: 		'<input type="hidden" name="shownOnce'.$cts.'" value="0" />'."\n";
 2225: 	    $cts++;
 2226: 	}
 2227: 	$request->print($prnmsg);
 2228: 
 2229: #	if ($env{'form.handgrade'} eq 'yes') {
 2230:         unless ($is_tool) {
 2231: 
 2232:             my %lt = &Apache::lonlocal::texthash(
 2233:                           keyh => 'Keyword Highlighting for Essays',
 2234:                           keyw => 'Keyword Options',
 2235:                           list => 'List',
 2236:                           past => 'Paste Selection to List',
 2237:                           high => 'Highlight Attribute',
 2238:                      );    
 2239: #
 2240: # Print out the keyword options line
 2241: #
 2242: 	    $request->print(
 2243:                 '<div class="LC_columnSection">'
 2244:                .'<fieldset><legend>'.$lt{'keyh'}.'</legend>'
 2245:                .&Apache::lonhtmlcommon::funclist_from_array(
 2246:                     ['<a href="javascript:keywords(document.SCORE);" target="_self">'.$lt{'list'}.'</a>',
 2247:                      '<a href="#" onmousedown="javascript:getSel(); return false"
 2248:  class="page">'.$lt{'past'}.'</a>',
 2249:                      '<a href="javascript:kwhighlight();" target="_self">'.$lt{'high'}.'</a>'],
 2250:                     {legend => $lt{'keyw'}})
 2251:                .'</fieldset></div>'
 2252:             );
 2253: 
 2254: #
 2255: # Load the other essays for similarity check
 2256: #
 2257:             (undef,undef,$essayurl) = &Apache::lonnet::decode_symb($symb);
 2258:             if ($essayurl eq 'lib/templates/simpleproblem.problem') {
 2259:                 my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 2260:                 my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 2261:                 if ($cdom ne '' && $cnum ne '') {
 2262:                     my ($map,$id,$res) = &Apache::lonnet::decode_symb($symb);
 2263:                     if ($map =~ m{^\Quploaded/$cdom/$cnum/\E(default(?:|_\d+)\.(?:sequence|page))$}) {
 2264:                         my $apath = $1.'_'.$id;
 2265:                         $apath=~s/\W/\_/gs;
 2266:                         &init_old_essays($symb,$apath,$cdom,$cnum);
 2267:                     }
 2268:                 }
 2269:             } else {
 2270: 	        my ($adom,$aname,$apath)=($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
 2271: 	        $apath=&escape($apath);
 2272: 	        $apath=~s/\W/\_/gs;
 2273:                 &init_old_essays($symb,$apath,$adom,$aname);
 2274:             }
 2275:         }
 2276:     }
 2277: 
 2278: # This is where output for one specific student would start
 2279:     my $add_class = ($counter%2) ? ' LC_grade_show_user_odd_row' : '';
 2280:     $request->print(
 2281:         "\n\n"
 2282:        .'<div class="LC_grade_show_user'.$add_class.'">'
 2283:        .'<h2>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).'</h2>'
 2284:        ."\n"
 2285:     );
 2286: 
 2287:     # Show additional functions if allowed
 2288:     if ($perm{'vgr'}) {
 2289:         $request->print(
 2290:             &Apache::loncommon::track_student_link(
 2291:                 'View recent activity',
 2292:                 $uname,$udom,'check')
 2293:            .' '
 2294:         );
 2295:     }
 2296:     if ($perm{'opa'}) {
 2297:         $request->print(
 2298:             &Apache::loncommon::pprmlink(
 2299:                 &mt('Set/Change parameters'),
 2300:                 $uname,$udom,$symb,'check'));
 2301:     }
 2302: 
 2303:     # Show Problem
 2304:     if ($env{'form.vProb'} eq 'all' or $env{'form.vAns'} eq 'all') {
 2305: 	my $mode;
 2306: 	if ($env{'form.vProb'} eq 'all' && $env{'form.vAns'} eq 'all') {
 2307: 	    $mode='both';
 2308: 	} elsif ($env{'form.vProb'} eq 'all' ) {
 2309: 	    $mode='text';
 2310: 	} elsif ($env{'form.vAns'} eq 'all') {
 2311: 	    $mode='answer';
 2312: 	}
 2313: 	&Apache::lonxml::clear_problem_counter();
 2314: 	$request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode,{'request.prefix' => 'ctr'.$counter}));
 2315:     }
 2316: 
 2317:     my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
 2318:     my $res_error;
 2319:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
 2320:     if ($res_error) {
 2321:         $request->print(&navmap_errormsg());
 2322:         return;
 2323:     }
 2324: 
 2325:     # Display student info
 2326:     $request->print(($counter == 0 ? '' : '<br />'));
 2327: 
 2328:     my $boxtitle = &mt('Submissions');
 2329:     if ($is_tool) {
 2330:         $boxtitle = &mt('Transactions')
 2331:     }
 2332:     my $result='<div class="LC_Box">'
 2333:               .'<h3 class="LC_hcell">'.$boxtitle.'</h3>';
 2334:     $result.='<input type="hidden" name="name'.$counter.
 2335:              '" value="'.$env{'form.fullname'}.'" />'."\n";
 2336: #    if ($env{'form.handgrade'} eq 'no') {
 2337:     unless ($is_tool) {
 2338:         $result.='<p class="LC_info">'
 2339:                 .&mt('Part(s) graded correct by the computer is marked with a [_1] symbol.',$checkIcon)
 2340:                 ."</p>\n";
 2341:     }
 2342: 
 2343:     # If any part of the problem is an essay-response (handgraded), then check for collaborators
 2344:     my $fullname;
 2345:     my $col_fullnames = [];
 2346: #    if ($env{'form.handgrade'} eq 'yes') {
 2347:     unless ($is_tool) {
 2348: 	(my $sub_result,$fullname,$col_fullnames)=
 2349: 	    &check_collaborators($symb,$uname,$udom,\%record,$handgrade,
 2350: 				 $counter);
 2351: 	$result.=$sub_result;
 2352:     }
 2353:     $request->print($result."\n");
 2354:     
 2355:     # print student answer/submission
 2356:     # Options are (1) Handgraded submission only
 2357:     #             (2) Last submission, includes submission that is not handgraded 
 2358:     #                  (for multi-response type part)
 2359:     #             (3) Last submission plus the parts info
 2360:     #             (4) The whole record for this student
 2361:     
 2362:     my ($string,$timestamp)= &get_last_submission(\%record,$is_tool);
 2363: 	
 2364:     my $lastsubonly;
 2365: 
 2366:     if ($$timestamp eq '') {
 2367:         $lastsubonly.='<div class="LC_grade_submissions_body">'.$$string[0].'</div>'; 
 2368:     } elsif ($is_tool) {
 2369:         $lastsubonly =
 2370:             '<div class="LC_grade_submissions_body">'
 2371:            .'<b>'.&mt('Date Grade Passed Back:').'</b> '.$$timestamp."</div>\n";
 2372:     } else {
 2373:         $lastsubonly =
 2374:             '<div class="LC_grade_submissions_body">'
 2375:            .'<b>'.&mt('Date Submitted:').'</b> '.$$timestamp."\n";
 2376: 
 2377: 	my %seenparts;
 2378: 	my @part_response_id = &flatten_responseType($responseType);
 2379: 	foreach my $part (@part_response_id) {
 2380: 	    next if ($env{'form.lastSub'} eq 'hdgrade' 
 2381: 			 && $$handgrade{$$part[0].'_'.$$part[1]} ne 'yes');
 2382: 
 2383: 	    my ($partid,$respid) = @{ $part };
 2384: 	    my $display_part=&get_display_part($partid,$symb);
 2385: 	    if ($env{"form.$uname:$udom:$partid:submitted_by"}) {
 2386: 		if (exists($seenparts{$partid})) { next; }
 2387: 		$seenparts{$partid}=1;
 2388:                 $request->print(
 2389:                     '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
 2390:                     ' <b>'.&mt('Collaborative submission by: [_1]',
 2391:                                '<a href="javascript:viewSubmitter(\''.
 2392:                                $env{"form.$uname:$udom:$partid:submitted_by"}.
 2393:                                '\');" target="_self">'.
 2394:                                $$fullname{$env{"form.$uname:$udom:$partid:submitted_by"}}.'</a>').
 2395:                     '<br />');
 2396: 		next;
 2397: 		}
 2398: 	    my $responsetype = $responseType->{$partid}->{$respid};
 2399: 	    if (!exists($record{"resource.$partid.$respid.submission"})) {
 2400:                 $lastsubonly.="\n".'<div class="LC_grade_submission_part">'.
 2401:                     '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
 2402:                     ' <span class="LC_internal_info">'.
 2403:                     '('.&mt('Response ID: [_1]',$respid).')'.
 2404:                     '</span>&nbsp; &nbsp;'.
 2405: 	       	    '<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br /><br /></div>';
 2406: 		next;
 2407: 	    }
 2408: 	    foreach my $submission (@$string) {
 2409: 		my ($partid,$respid) = ($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
 2410: 		if (join('_',@{$part}) ne ($partid.'_'.$respid)) { next; }
 2411: 		my ($ressub,$hide,$draft,$subval) = split(/:/,$submission,4);
 2412: 		# Similarity check
 2413:                 my $similar='';
 2414:                 my ($type,$trial,$rndseed);
 2415:                 if ($hide eq 'rand') {
 2416:                     $type = 'randomizetry';
 2417:                     $trial = $record{"resource.$partid.tries"};
 2418:                     $rndseed = $record{"resource.$partid.rndseed"};
 2419:                 }
 2420: 	        if ($env{'form.checkPlag'}) {
 2421:     		    my ($oname,$odom,$ocrsid,$oessay,$osim)=
 2422: 		        &most_similar($uname,$udom,$symb,$subval);
 2423: 		    if ($osim) {
 2424: 			$osim=int($osim*100.0);
 2425:                         if ($hide eq 'anon') {
 2426:                             $similar='<hr /><span class="LC_warning">'.&mt("Essay was found to be similar to another essay submitted for this assignment.").'<br />'.
 2427:                                      &mt('As the current submission is for an anonymous survey, no other details are available.').'</span><hr />';
 2428:                         } else {
 2429: 			    $similar='<hr />';
 2430:                             if ($essayurl eq 'lib/templates/simpleproblem.problem') {
 2431:                                 $similar .= '<h3><span class="LC_warning">'.
 2432:                                             &mt('Essay is [_1]% similar to an essay by [_2]',
 2433:                                                 $osim,
 2434:                                                 &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')').
 2435:                                             '</span></h3>';
 2436:                             } else {
 2437:                                 my %old_course_desc;
 2438:                                 if ($ocrsid ne '') {
 2439:                                     if (ref($coursedesc_by_cid{$ocrsid}) eq 'HASH') {
 2440:                                         %old_course_desc = %{$coursedesc_by_cid{$ocrsid}};
 2441:                                     } else {
 2442:                                         my $args;
 2443:                                         if ($ocrsid ne $env{'request.course.id'}) {
 2444:                                             $args = {'one_time' => 1};
 2445:                                         }
 2446:                                         %old_course_desc =
 2447:                                             &Apache::lonnet::coursedescription($ocrsid,$args);
 2448:                                         $coursedesc_by_cid{$ocrsid} = \%old_course_desc;
 2449:                                     }
 2450:                                     $similar .=
 2451:                                         '<h3><span class="LC_warning">'.
 2452:                                         &mt('Essay is [_1]% similar to an essay by [_2] in course [_3] (course id [_4]:[_5])',
 2453:                                             $osim,
 2454:                                             &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')',
 2455:                                             $old_course_desc{'description'},
 2456:                                             $old_course_desc{'num'},
 2457:                                             $old_course_desc{'domain'}).
 2458:                                         '</span></h3>';
 2459:                                 } else {
 2460:                                     $similar .=
 2461:                                         '<h3><span class="LC_warning">'.
 2462:                                         &mt('Essay is [_1]% similar to an essay by [_2] in an unknown course',
 2463:                                             $osim,
 2464:                                             &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')').
 2465:                                         '</span></h3>';
 2466:                                 }
 2467:                             }
 2468:                             $similar .= '<blockquote><i>'.
 2469:                                         &keywords_highlight($oessay).
 2470:                                         '</i></blockquote><hr />';
 2471:                         }
 2472: 	            }
 2473: 		}
 2474: 		my $order=&get_order($partid,$respid,$symb,$uname,$udom,
 2475:                                      undef,$type,$trial,$rndseed);
 2476:                 if ($env{'form.lastSub'} eq 'lastonly' || $env{'form.lastSub'} eq 'datesub' || $env{'form.lastSub'} =~ /^(last|all)$/ || ($env{'form.lastSub'} eq 'hdgrade' && 
 2477: 			 $$handgrade{$$part[0].'_'.$$part[1]} eq 'yes')) {
 2478: 		    my $display_part=&get_display_part($partid,$symb);
 2479:                     $lastsubonly.='<div class="LC_grade_submission_part">'.
 2480:                         '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
 2481:                         ' <span class="LC_internal_info">'.
 2482:                         '('.&mt('Response ID: [_1]',$respid).')'.
 2483:                         '</span>&nbsp; &nbsp;';
 2484: 		    my $files=&get_submitted_files($udom,$uname,$partid,$respid,\%record);
 2485:                         
 2486: 		    if (@$files) {
 2487:                         if ($hide eq 'anon') {
 2488:                             $lastsubonly.='<br />'.&mt('[quant,_1,file] uploaded to this anonymous survey',scalar(@{$files}));
 2489:                         } else {
 2490:                             $lastsubonly.='<br /><br />'.'<b>'.&mt('Submitted Files:').'</b>'
 2491:                                         .'<br /><span class="LC_warning">';
 2492:                             if(@$files == 1) {
 2493:                                 $lastsubonly .= &mt('Like all files provided by users, this file may contain viruses!');
 2494:                             } else {
 2495:                                 $lastsubonly .= &mt('Like all files provided by users, these files may contain viruses!');
 2496:                             }
 2497:                             $lastsubonly .= '</span>';                         
 2498:                             foreach my $file (@$files) {
 2499:                                 &Apache::lonnet::allowuploaded('/adm/grades',$file);
 2500:                                 $lastsubonly.='<br /><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.&Apache::loncommon::icon($file).'" border="0" alt="" /> '.$file.'</a>';
 2501:                             }
 2502:                         }
 2503: 			$lastsubonly.='<br />';
 2504:                     }
 2505:                     if ($hide eq 'anon') {
 2506:                         $lastsubonly.='<br /><b>'.&mt('Anonymous Survey').'</b>'; 
 2507:                     } else {
 2508:              	        $lastsubonly.='<br /><b>'.&mt('Submitted Answer:').' </b>';
 2509:                         if ($draft) {
 2510:                             $lastsubonly.= ' <span class="LC_warning">'.&mt('Draft Copy').'</span>';
 2511:                         }
 2512:                         $subval =
 2513: 			    &cleanRecord($subval,$responsetype,$symb,$partid,
 2514: 					 $respid,\%record,$order,undef,$uname,$udom,$type,$trial,$rndseed);
 2515:                         if ($responsetype eq 'essay') {
 2516:                             $subval =~ s{\n}{<br />}g;
 2517:                         }
 2518:                         $lastsubonly.=$subval."\n";
 2519:                     }
 2520: 	            if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
 2521: 		    $lastsubonly.='</div>';
 2522: 		}
 2523:             }
 2524: 	}
 2525: 	$lastsubonly.='</div>'."\n"; # End: LC_grade_submissions_body
 2526:     }
 2527:     $request->print($lastsubonly);
 2528:     if ($env{'form.lastSub'} eq 'datesub') {
 2529:         my ($parts,$handgrade,$responseType) = &response_type($symb,\$res_error);
 2530: 	$request->print(&displaySubByDates($symb,\%record,$parts,$responseType,$checkIcon,$uname,$udom));
 2531:   
 2532:     } 
 2533:     if ($env{'form.lastSub'} =~ /^(last|all)$/) {
 2534:         my $identifier = (&canmodify($usec)? $counter : '');
 2535:         $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
 2536: 								 $env{'request.course.id'},
 2537: 								 $last,'.submission',
 2538: 								 'Apache::grades::keywords_highlight',
 2539:                                                                  $usec,$identifier));
 2540:     }
 2541:     $request->print('<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'
 2542: 	.$udom.'" />'."\n");
 2543:     # return if view submission with no grading option
 2544:     if (!&canmodify($usec)) {
 2545: 	$request->print('<p><span class="LC_warning">'.&mt('No grading privileges').'</span></p></div>');
 2546: 	return;
 2547:     } else {
 2548: 	$request->print('</div>'."\n");
 2549:     }
 2550: 
 2551:     # essay grading message center
 2552: #    if ($env{'form.handgrade'} eq 'yes') {
 2553:     if (1) {
 2554: 	my $result='<div class="LC_grade_message_center">';
 2555:     
 2556: 	$result.='<div class="LC_grade_message_center_header">'.
 2557: 	    &mt('Send Message').'</div><div class="LC_grade_message_center_body">';
 2558: 	my ($lastname,$givenn) = split(/,/,$env{'form.fullname'});
 2559: 	my $msgfor = $givenn.' '.$lastname;
 2560: 	if (scalar(@$col_fullnames) > 0) {
 2561: 	    my $lastone = pop(@$col_fullnames);
 2562: 	    $msgfor .= ', '.(join ', ',@$col_fullnames).' and '.$lastone.'.';
 2563: 	}
 2564: 	$msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
 2565: 	$result.='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
 2566: 	    '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n";
 2567: 	$result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
 2568: 	    ',\''.$msgfor.'\');" target="_self">'.
 2569: 	    &mt('Compose message to student'.(scalar(@$col_fullnames) >= 1 ? 's' : '')).'</a><label> ('.
 2570: 	    &mt('incl. grades').' <input type="checkbox" name="withgrades'.$counter.'" /></label>)'.
 2571: 	    ' <img src="'.$request->dir_config('lonIconsURL').
 2572: 	    '/mailbkgrd.gif" width="14" height="10" alt="" name="mailicon'.$counter.'" />'."\n".
 2573: 	    '<br />&nbsp;('.
 2574: 	    &mt('Message will be sent when you click on Save &amp; Next below.').")\n";
 2575: 	$result.='</div></div>';
 2576: 	$request->print($result);
 2577:     }
 2578: 
 2579:     my %seen = ();
 2580:     my @partlist;
 2581:     my @gradePartRespid;
 2582:     my @part_response_id;
 2583:     if ($is_tool) {
 2584:         @part_response_id = ([0,'']);
 2585:     } else {
 2586:         @part_response_id = &flatten_responseType($responseType);
 2587:     }
 2588:     $request->print(
 2589:         '<div class="LC_Box">'
 2590:        .'<h3 class="LC_hcell">'.&mt('Assign Grades').'</h3>'
 2591:     );
 2592:     $request->print(&gradeBox_start());
 2593:     foreach my $part_response_id (@part_response_id) {
 2594:     	my ($partid,$respid) = @{ $part_response_id };
 2595: 	my $part_resp = join('_',@{ $part_response_id });
 2596: 	next if ($seen{$partid} > 0);
 2597: 	$seen{$partid}++;
 2598: 	next if ($$handgrade{$part_resp} ne 'yes' 
 2599: 		 && $env{'form.lastSub'} eq 'hdgrade');
 2600: 	push(@partlist,$partid);
 2601: 	push(@gradePartRespid,$partid.'.'.$respid);
 2602: 	$request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
 2603:     }
 2604:     $request->print(&gradeBox_end()); # </div>
 2605:     $request->print('</div>');
 2606: 
 2607:     $request->print('<div class="LC_grade_info_links">');
 2608:     $request->print('</div>');
 2609: 
 2610:     $result='<input type="hidden" name="partlist'.$counter.
 2611: 	'" value="'.(join ":",@partlist).'" />'."\n";
 2612:     $result.='<input type="hidden" name="gradePartRespid'.
 2613: 	'" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
 2614:     my $ctr = 0;
 2615:     while ($ctr < scalar(@partlist)) {
 2616: 	$result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
 2617: 	    $partlist[$ctr].'" />'."\n";
 2618: 	$ctr++;
 2619:     }
 2620:     $request->print($result.''."\n");
 2621: 
 2622: # Done with printing info for one student
 2623: 
 2624:     $request->print('</div>');#LC_grade_show_user
 2625: 
 2626: 
 2627:     # print end of form
 2628:     if ($counter == $total) {
 2629:         my $endform='<br /><hr /><table border="0"><tr><td>'."\n";
 2630: 	$endform.='<input type="button" value="'.&mt('Save &amp; Next').'" '.
 2631: 	    'onclick="javascript:checksubmit(this.form,\'Save & Next\','.
 2632: 	    $total.','.scalar(@partlist).');" target="_self" /> &nbsp;'."\n";
 2633: 	my $ntstu ='<select name="NTSTU">'.
 2634: 	    '<option>1</option><option>2</option>'.
 2635: 	    '<option>3</option><option>5</option>'.
 2636: 	    '<option>7</option><option>10</option></select>'."\n";
 2637: 	my $nsel = ($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : '1');
 2638: 	$ntstu =~ s/<option>$nsel</<option selected="selected">$nsel</;
 2639:         $endform.=&mt('[_1]student(s)',$ntstu);
 2640: 	$endform.='&nbsp;&nbsp;<input type="button" value="'.&mt('Previous').'" '.
 2641: 	    'onclick="javascript:checksubmit(this.form,\'Previous\');" target="_self" /> &nbsp;'."\n".
 2642: 	    '<input type="button" value="'.&mt('Next').'" '.
 2643: 	    'onclick="javascript:checksubmit(this.form,\'Next\');" target="_self" /> &nbsp;';
 2644:         $endform.='<span class="LC_warning">'.
 2645:                   &mt('(Next and Previous (student) do not save the scores.)').
 2646:                   '</span>'."\n" ;
 2647:         $endform.="<input type='hidden' value='".&get_increment().
 2648:             "' name='increment' />";
 2649: 	$endform.='</td></tr></table></form>';
 2650: 	$request->print($endform);
 2651:     }
 2652:     return '';
 2653: }
 2654: 
 2655: sub check_collaborators {
 2656:     my ($symb,$uname,$udom,$record,$handgrade,$counter) = @_;
 2657:     my ($result,@col_fullnames);
 2658:     my ($classlist,undef,$fullname) = &getclasslist('all','0');
 2659:     foreach my $part (keys(%$handgrade)) {
 2660: 	my $ncol = &Apache::lonnet::EXT('resource.'.$part.
 2661: 					'.maxcollaborators',
 2662: 					$symb,$udom,$uname);
 2663: 	next if ($ncol <= 0);
 2664: 	$part =~ s/\_/\./g;
 2665: 	next if ($record->{'resource.'.$part.'.collaborators'} eq '');
 2666: 	my (@good_collaborators, @bad_collaborators);
 2667: 	foreach my $possible_collaborator
 2668: 	    (split(/[,;\s]+/,$record->{'resource.'.$part.'.collaborators'})) { 
 2669: 	    $possible_collaborator =~ s/[\$\^\(\)]//g;
 2670: 	    next if ($possible_collaborator eq '');
 2671: 	    my ($co_name,$co_dom) = split(/:/,$possible_collaborator);
 2672: 	    $co_dom = $udom if (! defined($co_dom) || $co_dom =~ /^domain$/i);
 2673: 	    next if ($co_name eq $uname && $co_dom eq $udom);
 2674: 	    # Doing this grep allows 'fuzzy' specification
 2675: 	    my @matches = grep(/^\Q$co_name\E:\Q$co_dom\E$/i, 
 2676: 			       keys(%$classlist));
 2677: 	    if (! scalar(@matches)) {
 2678: 		push(@bad_collaborators, $possible_collaborator);
 2679: 	    } else {
 2680: 		push(@good_collaborators, @matches);
 2681: 	    }
 2682: 	}
 2683: 	if (scalar(@good_collaborators) != 0) {
 2684: 	    $result.='<br />'.&mt('Collaborators:').'<ol>';
 2685: 	    foreach my $name (@good_collaborators) {
 2686: 		my ($lastname,$givenn) = split(/,/,$$fullname{$name});
 2687: 		push(@col_fullnames, $givenn.' '.$lastname);
 2688: 		$result.='<li>'.$fullname->{$name}.'</li>';
 2689: 	    }
 2690: 	    $result.='</ol><br />'."\n";
 2691: 	    my ($part)=split(/\./,$part);
 2692: 	    $result.='<input type="hidden" name="collaborator'.$counter.
 2693: 		'" value="'.$part.':'.(join ':',@good_collaborators).'" />'.
 2694: 		"\n";
 2695: 	}
 2696: 	if (scalar(@bad_collaborators) > 0) {
 2697: 	    $result.='<div class="LC_warning">';
 2698: 	    $result.=&mt('This student has submitted [quant,_1,invalid collaborator]: [_2]',scalar(@bad_collaborators),join(', ',@bad_collaborators));
 2699: 	    $result .= '</div>';
 2700: 	}         
 2701: 	if (scalar(@bad_collaborators > $ncol)) {
 2702: 	    $result .= '<div class="LC_warning">';
 2703: 	    $result .= &mt('This student has submitted too many '.
 2704: 		'collaborators.  Maximum is [_1].',$ncol);
 2705: 	    $result .= '</div>';
 2706: 	}
 2707:     }
 2708:     return ($result,$fullname,\@col_fullnames);
 2709: }
 2710: 
 2711: #--- Retrieve the last submission for all the parts
 2712: sub get_last_submission {
 2713:     my ($returnhash,$is_tool)=@_;
 2714:     my (@string,$timestamp,%lasthidden);
 2715:     if ($$returnhash{'version'}) {
 2716: 	my %lasthash=();
 2717: 	my ($version);
 2718: 	for ($version=1;$version<=$$returnhash{'version'};$version++) {
 2719: 	    foreach my $key (sort(split(/\:/,
 2720: 					$$returnhash{$version.':keys'}))) {
 2721: 		$lasthash{$key}=$$returnhash{$version.':'.$key};
 2722: 		$timestamp = 
 2723: 		    &Apache::lonlocal::locallocaltime($$returnhash{$version.':timestamp'});
 2724: 	    }
 2725: 	}
 2726:         my (%typeparts,%randombytry);
 2727:         my $showsurv = 
 2728:             &Apache::lonnet::allowed('vas',$env{'request.course.id'});
 2729:         foreach my $key (sort(keys(%lasthash))) {
 2730:             if ($key =~ /\.type$/) {
 2731:                 if (($lasthash{$key} eq 'anonsurvey') || 
 2732:                     ($lasthash{$key} eq 'anonsurveycred') ||
 2733:                     ($lasthash{$key} eq 'randomizetry')) {
 2734:                     my ($ign,@parts) = split(/\./,$key);
 2735:                     pop(@parts);
 2736:                     my $id = join('.',@parts);
 2737:                     if ($lasthash{$key} eq 'randomizetry') {
 2738:                         $randombytry{$ign.'.'.$id} = $lasthash{$key};
 2739:                     } else {
 2740:                         unless ($showsurv) {
 2741:                             $typeparts{$ign.'.'.$id} = $lasthash{$key};
 2742:                         }
 2743:                     }
 2744:                     delete($lasthash{$key});
 2745:                 }
 2746:             }
 2747:         }
 2748:         my @hidden = keys(%typeparts);
 2749:         my @randomize = keys(%randombytry);
 2750: 	foreach my $key (keys(%lasthash)) {
 2751: 	    next if ($key !~ /\.submission$/);
 2752:             my $hide;
 2753:             if (@hidden) {
 2754:                 foreach my $id (@hidden) {
 2755:                     if ($key =~ /^\Q$id\E/) {
 2756:                         $hide = 'anon';
 2757:                         last;
 2758:                     }
 2759:                 }
 2760:             }
 2761:             unless ($hide) {
 2762:                 if (@randomize) {
 2763:                     foreach my $id (@randomize) {
 2764:                         if ($key =~ /^\Q$id\E/) {
 2765:                             $hide = 'rand';
 2766:                             last;
 2767:                         }
 2768:                     }
 2769:                 }
 2770:             }
 2771: 	    my ($partid,$foo) = split(/submission$/,$key);
 2772: 	    my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ? 1 : 0;
 2773:             push(@string, join(':', $key, $hide, $draft, (
 2774:                 ref($lasthash{$key}) eq 'ARRAY' ?
 2775:                     join(',', @{$lasthash{$key}}) : $lasthash{$key}) ));
 2776: 	}
 2777:     }
 2778:     if (!@string) {
 2779:         my $msg;
 2780:         if ($is_tool) {
 2781:             $msg = &mt('No grade passed back.');
 2782:         } else {
 2783:             $msg = &mt('Nothing submitted - no attempts.');
 2784:         }
 2785: 	$string[0] =
 2786: 	    '<span class="LC_warning">'.$msg.'</span>';
 2787:     }
 2788:     return (\@string,\$timestamp);
 2789: }
 2790: 
 2791: #--- High light keywords, with style choosen by user.
 2792: sub keywords_highlight {
 2793:     my $string    = shift;
 2794:     my $size      = $env{'form.kwsize'} eq '0' ? '' : 'size='.$env{'form.kwsize'};
 2795:     my $styleon   = $env{'form.kwstyle'} eq ''  ? '' : $env{'form.kwstyle'};
 2796:     (my $styleoff = $styleon) =~ s/\</\<\//;
 2797:     my @keylist   = split(/[,\s+]/,$env{'form.keywords'});
 2798:     foreach my $keyword (@keylist) {
 2799: 	$string =~ s/\b\Q$keyword\E(\b|\.)/<font color\=$env{'form.kwclr'} $size\>$styleon$keyword$styleoff<\/font>/gi;
 2800:     }
 2801:     return $string;
 2802: }
 2803: 
 2804: # For Tasks provide a mechanism to display previous version for one specific student
 2805: 
 2806: sub show_previous_task_version {
 2807:     my ($request,$symb) = @_;
 2808:     if ($symb eq '') {
 2809:         $request->print(
 2810:             '<span class="LC_error">'.
 2811:             &mt('Unable to handle ambiguous references.').
 2812:             '</span>');
 2813:         return '';
 2814:     }
 2815:     my ($uname,$udom) = ($env{'form.student'},$env{'form.userdom'});
 2816:     my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
 2817:     if (!&canview($usec)) {
 2818:         $request->print(
 2819:             '<span class="LC_warning">'.
 2820:             &mt('Unable to view previous version for requested student.').
 2821:             ' '.&mt('([_1] in section [_2] in course id [_3])',
 2822:                     $uname.':'.$udom,$usec,$env{'request.course.id'}).
 2823:             '</span>');
 2824:         return;
 2825:     }
 2826:     my $mode = 'both';
 2827:     my $isTask = ($symb =~/\.task$/);
 2828:     if ($isTask) {
 2829:         if ($env{'form.previousversion'} =~ /^\d+$/) {
 2830:             if ($env{'form.fullname'} eq '') {
 2831:                 $env{'form.fullname'} =
 2832:                     &Apache::loncommon::plainname($uname,$udom,'lastname');
 2833:             }
 2834:             my $probtitle=&Apache::lonnet::gettitle($symb);
 2835:             $request->print("\n\n".
 2836:                             '<div class="LC_grade_show_user">'.
 2837:                             '<h2>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
 2838:                             '</h2>'."\n");
 2839:             &Apache::lonxml::clear_problem_counter();
 2840:             $request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode,
 2841:                             {'previousversion' => $env{'form.previousversion'} }));
 2842:             $request->print("\n</div>");
 2843:         }
 2844:     }
 2845:     return;
 2846: }
 2847: 
 2848: sub choose_task_version_form {
 2849:     my ($symb,$uname,$udom,$nomenu) = @_;
 2850:     my $isTask = ($symb =~/\.task$/);
 2851:     my ($current,$version,$result,$js,$displayed,$rowtitle);
 2852:     if ($isTask) {
 2853:         my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
 2854:                                               $udom,$uname);
 2855:         if (($record{'resource.0.version'} eq '') ||
 2856:             ($record{'resource.0.version'} < 2)) {
 2857:             return ($record{'resource.0.version'},
 2858:                     $record{'resource.0.version'},$result,$js);
 2859:         } else {
 2860:             $current = $record{'resource.0.version'};
 2861:         }
 2862:         if ($env{'form.previousversion'}) {
 2863:             $displayed = $env{'form.previousversion'};
 2864:             $rowtitle = &mt('Choose another version:')
 2865:         } else {
 2866:             $displayed = $current;
 2867:             $rowtitle = &mt('Show earlier version:');
 2868:         }
 2869:         $result = '<div class="LC_left_float">';
 2870:         my $list;
 2871:         my $numversions = 0;
 2872:         for (my $i=1; $i<=$record{'resource.0.version'}; $i++) {
 2873:             if ($i == $current) {
 2874:                 if (!$env{'form.previousversion'} || $nomenu) {
 2875:                     next;
 2876:                 } else {
 2877:                     $list .= '<option value="'.$i.'">'.&mt('Current').'</option>'."\n";
 2878:                     $numversions ++;
 2879:                 }
 2880:             } elsif (defined($record{'resource.'.$i.'.0.status'})) {
 2881:                 unless ($i == $env{'form.previousversion'}) {
 2882:                     $numversions ++;
 2883:                 }
 2884:                 $list .= '<option value="'.$i.'">'.$i.'</option>'."\n";
 2885:             }
 2886:         }
 2887:         if ($numversions) {
 2888:             $symb = &HTML::Entities::encode($symb,'<>"&');
 2889:             $result .=
 2890:                 '<form name="getprev" method="post" action=""'.
 2891:                 ' onsubmit="return previousVersion('."'$uname','$udom','$symb','$displayed'".');">'.
 2892:                 &Apache::loncommon::start_data_table().
 2893:                 &Apache::loncommon::start_data_table_row().
 2894:                 '<th align="left">'.$rowtitle.'</th>'.
 2895:                 '<td><select name="version">'.
 2896:                 '<option>'.&mt('Select').'</option>'.
 2897:                 $list.
 2898:                 '</select></td>'.
 2899:                 &Apache::loncommon::end_data_table_row();
 2900:             unless ($nomenu) {
 2901:                 $result .= &Apache::loncommon::start_data_table_row().
 2902:                 '<th align="left">'.&mt('Open in new window').'</th>'.
 2903:                 '<td><span class="LC_nobreak">'.
 2904:                 '<label><input type="radio" name="prevwin" value="1" />'.
 2905:                 &mt('Yes').'</label>'.
 2906:                 '<label><input type="radio" name="prevwin" value="0" checked="checked" />'.&mt('No').'</label>'.
 2907:                 '</span></td>'.
 2908:                 &Apache::loncommon::end_data_table_row();
 2909:             }
 2910:             $result .=
 2911:                 &Apache::loncommon::start_data_table_row().
 2912:                 '<th align="left">&nbsp;</th>'.
 2913:                 '<td>'.
 2914:                 '<input type="submit" name="prevsub" value="'.&mt('Display').'" />'.
 2915:                 '</td>'.
 2916:                 &Apache::loncommon::end_data_table_row().
 2917:                 &Apache::loncommon::end_data_table().
 2918:                 '</form>';
 2919:             $js = &previous_display_javascript($nomenu,$current);
 2920:         } elsif ($displayed && $nomenu) {
 2921:             $result .= '<a href="javascript:window.close()">'.&mt('Close window').'</a>';
 2922:         } else {
 2923:             $result .= &mt('No previous versions to show for this student');
 2924:         }
 2925:         $result .= '</div>';
 2926:     }
 2927:     return ($current,$displayed,$result,$js);
 2928: }
 2929: 
 2930: sub previous_display_javascript {
 2931:     my ($nomenu,$current) = @_;
 2932:     my $js = <<"JSONE";
 2933: <script type="text/javascript">
 2934: // <![CDATA[
 2935: function previousVersion(uname,udom,symb) {
 2936:     var current = '$current';
 2937:     var version = document.getprev.version.options[document.getprev.version.selectedIndex].value;
 2938:     var prevstr = new RegExp("^\\\\d+\$");
 2939:     if (!prevstr.test(version)) {
 2940:         return false;
 2941:     }
 2942:     var url = '';
 2943:     if (version == current) {
 2944:         url = '/adm/grades?student='+uname+'&userdom='+udom+'&symb='+symb+'&command=submission';
 2945:     } else {
 2946:         url = '/adm/grades?student='+uname+'&userdom='+udom+'&symb='+symb+'&command=versionsub&previousversion='+version;
 2947:     }
 2948: JSONE
 2949:     if ($nomenu) {
 2950:         $js .= <<"JSTWO";
 2951:     document.location.href = url;
 2952: JSTWO
 2953:     } else {
 2954:         $js .= <<"JSTHREE";
 2955:     var newwin = 0;
 2956:     for (var i=0; i<document.getprev.prevwin.length; i++) {
 2957:         if (document.getprev.prevwin[i].checked == true) {
 2958:             newwin = document.getprev.prevwin[i].value;
 2959:         }
 2960:     }
 2961:     if (newwin == 1) {
 2962:         var options = 'height=600,width=800,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no';
 2963:         url = url+'&inhibitmenu=yes';
 2964:         if (typeof(previousWin) == 'undefined' || previousWin.closed) {
 2965:             previousWin = window.open(url,'',options,1);
 2966:         } else {
 2967:             previousWin.location.href = url;
 2968:         }
 2969:         previousWin.focus();
 2970:         return false;
 2971:     } else {
 2972:         document.location.href = url;
 2973:         return false;
 2974:     }
 2975: JSTHREE
 2976:     }
 2977:     $js .= <<"ENDJS";
 2978:     return false;
 2979: }
 2980: // ]]>
 2981: </script>
 2982: ENDJS
 2983: 
 2984: }
 2985: 
 2986: #--- Called from submission routine
 2987: sub processHandGrade {
 2988:     my ($request,$symb) = @_;
 2989:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 2990:     my $button = $env{'form.gradeOpt'};
 2991:     my $ngrade = $env{'form.NCT'};
 2992:     my $ntstu  = $env{'form.NTSTU'};
 2993:     my $cdom   = $env{'course.'.$env{'request.course.id'}.'.domain'};
 2994:     my $cnum   = $env{'course.'.$env{'request.course.id'}.'.num'};
 2995: 
 2996:     if ($button eq 'Save & Next') {
 2997: 	my $ctr = 0;
 2998: 	while ($ctr < $ngrade) {
 2999: 	    my ($uname,$udom) = split(/:/,$env{'form.unamedom'.$ctr});
 3000: 	    my ($errorflag,$pts,$wgt,$numhidden) = 
 3001:                 &saveHandGrade($request,$symb,$uname,$udom,$ctr);
 3002: 	    if ($errorflag eq 'no_score') {
 3003: 		$ctr++;
 3004: 		next;
 3005: 	    }
 3006: 	    if ($errorflag eq 'not_allowed') {
 3007: 		$request->print(
 3008:                     '<span class="LC_error">'
 3009:                    .&mt('Not allowed to modify grades for [_1]',"$uname:$udom")
 3010:                    .'</span>');
 3011: 		$ctr++;
 3012: 		next;
 3013: 	    }
 3014:             if ($numhidden) {
 3015:                 $request->print(
 3016:                     '<span class="LC_info">'
 3017:                    .&mt('For [_1]: [quant,_2,transaction] hidden',"$uname:$udom",$numhidden)
 3018:                    .'</span><br />');
 3019:             }
 3020: 	    my $includemsg = $env{'form.includemsg'.$ctr};
 3021: 	    my ($subject,$message,$msgstatus) = ('','','');
 3022: 	    my $restitle = &Apache::lonnet::gettitle($symb);
 3023:             my ($feedurl,$showsymb) =
 3024: 		&get_feedurl_and_symb($symb,$uname,$udom);
 3025: 	    my $messagetail;
 3026: 	    if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
 3027: 		$subject = $env{'form.msgsub'} if ($includemsg =~ /msgsub/);
 3028: 		unless ($subject=~/\w/) { $subject=&mt('Grading Feedback'); }
 3029: 		$subject.=' ['.$restitle.']';
 3030: 		my (@msgnum) = split(/,/,$includemsg);
 3031: 		foreach (@msgnum) {
 3032: 		    $message.=$env{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
 3033: 		}
 3034: 		$message =&Apache::lonfeedback::clear_out_html($message);
 3035: 		if ($env{'form.withgrades'.$ctr}) {
 3036: 		    $message.="\n\nPoint".($pts > 1 ? 's':'').' awarded = '.$pts.' out of '.$wgt;
 3037: 		    $messagetail = " for <a href=\"".
 3038: 		                   $feedurl."?symb=$showsymb\">$restitle</a>";
 3039: 		}
 3040: 		$msgstatus = 
 3041:                     &Apache::lonmsg::user_normal_msg($uname,$udom,$subject,
 3042: 						     $message.$messagetail,
 3043:                                                      undef,$feedurl,undef,
 3044:                                                      undef,undef,$showsymb,
 3045:                                                      $restitle);
 3046: 		$request->print('<br />'.&mt('Sending message to [_1]',$uname.':'.$udom).': '.
 3047: 				$msgstatus.'<br />');
 3048: 	    }
 3049: 	    if ($env{'form.collaborator'.$ctr}) {
 3050: 		my @collabstrs=&Apache::loncommon::get_env_multiple("form.collaborator$ctr");
 3051: 		foreach my $collabstr (@collabstrs) {
 3052: 		    my ($part,@collaborators) = split(/:/,$collabstr);
 3053: 		    foreach my $collaborator (@collaborators) {
 3054: 			my ($errorflag,$pts,$wgt) = 
 3055: 			    &saveHandGrade($request,$symb,$collaborator,$udom,$ctr,
 3056: 					   $env{'form.unamedom'.$ctr},$part);
 3057: 			if ($errorflag eq 'not_allowed') {
 3058: 			    $request->print("<span class=\"LC_error\">".&mt('Not allowed to modify grades for [_1]',"$collaborator:$udom")."</span>");
 3059: 			    next;
 3060: 			} elsif ($message ne '') {
 3061: 			    my ($baseurl,$showsymb) = 
 3062: 				&get_feedurl_and_symb($symb,$collaborator,
 3063: 						      $udom);
 3064: 			    if ($env{'form.withgrades'.$ctr}) {
 3065: 				$messagetail = " for <a href=\"".
 3066:                                     $baseurl."?symb=$showsymb\">$restitle</a>";
 3067: 			    }
 3068: 			    $msgstatus = 
 3069: 				&Apache::lonmsg::user_normal_msg($collaborator,$udom,$subject,$message.$messagetail,undef,$baseurl,undef,undef,undef,$showsymb,$restitle);
 3070: 			}
 3071: 		    }
 3072: 		}
 3073: 	    }
 3074: 	    $ctr++;
 3075: 	}
 3076:     }
 3077: 
 3078: #    if ($env{'form.handgrade'} eq 'yes') {
 3079:     if (1) {
 3080: 	# Keywords sorted in alphabatical order
 3081: 	my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
 3082: 	my %keyhash = ();
 3083: 	$env{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;
 3084: 	$env{'form.keywords'}           =~ s/^\s+|\s+$//;
 3085: 	my (@keywords) = sort(split(/\s+/,$env{'form.keywords'}));
 3086: 	$env{'form.keywords'} = join(' ',@keywords);
 3087: 	$keyhash{$symb.'_keywords'}     = $env{'form.keywords'};
 3088: 	$keyhash{$symb.'_subject'}      = $env{'form.msgsub'};
 3089: 	$keyhash{$loginuser.'_kwclr'}   = $env{'form.kwclr'};
 3090: 	$keyhash{$loginuser.'_kwsize'}  = $env{'form.kwsize'};
 3091: 	$keyhash{$loginuser.'_kwstyle'} = $env{'form.kwstyle'};
 3092: 
 3093: 	# message center - Order of message gets changed. Blank line is eliminated.
 3094: 	# New messages are saved in env for the next student.
 3095: 	# All messages are saved in nohist_handgrade.db
 3096: 	my ($ctr,$idx) = (1,1);
 3097: 	while ($ctr <= $env{'form.savemsgN'}) {
 3098: 	    if ($env{'form.savemsg'.$ctr} ne '') {
 3099: 		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.savemsg'.$ctr};
 3100: 		$idx++;
 3101: 	    }
 3102: 	    $ctr++;
 3103: 	}
 3104: 	$ctr = 0;
 3105: 	while ($ctr < $ngrade) {
 3106: 	    if ($env{'form.newmsg'.$ctr} ne '') {
 3107: 		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.newmsg'.$ctr};
 3108: 		$env{'form.savemsg'.$idx} = $env{'form.newmsg'.$ctr};
 3109: 		$idx++;
 3110: 	    }
 3111: 	    $ctr++;
 3112: 	}
 3113: 	$env{'form.savemsgN'} = --$idx;
 3114: 	$keyhash{$symb.'_savemsgN'} = $env{'form.savemsgN'};
 3115: 	my $putresult = &Apache::lonnet::put
 3116: 	    ('nohist_handgrade',\%keyhash,$cdom,$cnum);
 3117:     }
 3118:     # Called by Save & Refresh from Highlight Attribute Window
 3119:     my (undef,undef,$fullname) = &getclasslist($env{'form.section'},'1');
 3120:     if ($env{'form.refresh'} eq 'on') {
 3121: 	my ($ctr,$total) = (0,0);
 3122: 	while ($ctr < $ngrade) {
 3123: 	    $total++ if  $env{'form.unamedom'.$ctr} ne '';
 3124: 	    $ctr++;
 3125: 	}
 3126: 	$env{'form.NTSTU'}=$ngrade;
 3127: 	$ctr = 0;
 3128: 	while ($ctr < $total) {
 3129: 	    my $processUser = $env{'form.unamedom'.$ctr};
 3130: 	    ($env{'form.student'},$env{'form.userdom'}) = split(/:/,$processUser);
 3131: 	    $env{'form.fullname'} = $$fullname{$processUser};
 3132: 	    &submission($request,$ctr,$total-1,$symb);
 3133: 	    $ctr++;
 3134: 	}
 3135: 	return '';
 3136:     }
 3137: 
 3138:     # Get the next/previous one or group of students
 3139:     my $firststu = $env{'form.unamedom0'};
 3140:     my $laststu = $env{'form.unamedom'.($ngrade-1)};
 3141:     my $ctr = 2;
 3142:     while ($laststu eq '') {
 3143: 	$laststu  = $env{'form.unamedom'.($ngrade-$ctr)};
 3144: 	$ctr++;
 3145: 	$laststu = $firststu if ($ctr > $ngrade);
 3146:     }
 3147: 
 3148:     my (@parsedlist,@nextlist);
 3149:     my ($nextflg) = 0;
 3150:     foreach my $item (sort 
 3151: 	     {
 3152: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 3153: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 3154: 		 }
 3155: 		 return $a cmp $b;
 3156: 	     } (keys(%$fullname))) {
 3157: # FIXME: this is fishy, looks like the button label
 3158: 	if ($nextflg == 1 && $button =~ /Next$/) {
 3159: 	    push(@parsedlist,$item);
 3160: 	}
 3161: 	$nextflg = 1 if ($item eq $laststu);
 3162: 	if ($button eq 'Previous') {
 3163: 	    last if ($item eq $firststu);
 3164: 	    push(@parsedlist,$item);
 3165: 	}
 3166:     }
 3167:     $ctr = 0;
 3168: # FIXME: this is fishy, looks like the button label
 3169:     @parsedlist = reverse @parsedlist if ($button eq 'Previous');
 3170:     my $res_error;
 3171:     my ($partlist) = &response_type($symb,\$res_error);
 3172:     if ($res_error) {
 3173:         $request->print(&navmap_errormsg());
 3174:         return;
 3175:     }
 3176:     foreach my $student (@parsedlist) {
 3177: 	my $submitonly=$env{'form.submitonly'};
 3178: 	my ($uname,$udom) = split(/:/,$student);
 3179: 	
 3180: 	if ($submitonly eq 'queued') {
 3181: 	    my %queue_status = 
 3182: 		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
 3183: 							$udom,$uname);
 3184: 	    next if (!defined($queue_status{'gradingqueue'}));
 3185: 	}
 3186: 
 3187: 	if ($submitonly =~ /^(yes|graded|incorrect)$/) {
 3188: #	    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
 3189: 	    my %status=&student_gradeStatus($symb,$udom,$uname,$partlist);
 3190: 	    my $submitted = 0;
 3191: 	    my $ungraded = 0;
 3192: 	    my $incorrect = 0;
 3193: 	    foreach my $item (keys(%status)) {
 3194: 		$submitted = 1 if ($status{$item} ne 'nothing');
 3195: 		$ungraded = 1 if ($status{$item} =~ /^ungraded/);
 3196: 		$incorrect = 1 if ($status{$item} =~ /^incorrect/);
 3197: 		my ($foo,$partid,$foo1) = split(/\./,$item);
 3198: 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
 3199: 		    $submitted = 0;
 3200: 		}
 3201: 	    }
 3202: 	    next if (!$submitted && ($submitonly eq 'yes' ||
 3203: 				     $submitonly eq 'incorrect' ||
 3204: 				     $submitonly eq 'graded'));
 3205: 	    next if (!$ungraded && ($submitonly eq 'graded'));
 3206: 	    next if (!$incorrect && $submitonly eq 'incorrect');
 3207: 	}
 3208: 	push(@nextlist,$student) if ($ctr < $ntstu);
 3209: 	last if ($ctr == $ntstu);
 3210: 	$ctr++;
 3211:     }
 3212: 
 3213:     $ctr = 0;
 3214:     my $total = scalar(@nextlist)-1;
 3215: 
 3216:     foreach (sort(@nextlist)) {
 3217: 	my ($uname,$udom,$submitter) = split(/:/);
 3218: 	$env{'form.student'}  = $uname;
 3219: 	$env{'form.userdom'}  = $udom;
 3220: 	$env{'form.fullname'} = $$fullname{$_};
 3221: 	&submission($request,$ctr,$total,$symb);
 3222: 	$ctr++;
 3223:     }
 3224:     if ($total < 0) {
 3225: 	my $the_end.='<p>'.&mt('[_1]Message:[_2] No more students for this section or class.','<b>','</b>').'</p>'."\n";
 3226: 	$request->print($the_end);
 3227:     }
 3228:     return '';
 3229: }
 3230: 
 3231: #---- Save the score and award for each student, if changed
 3232: sub saveHandGrade {
 3233:     my ($request,$symb,$stuname,$domain,$newflg,$submitter,$part) = @_;
 3234:     my @version_parts;
 3235:     my $usec = &Apache::lonnet::getsection($domain,$stuname,
 3236: 					   $env{'request.course.id'});
 3237:     if (!&canmodify($usec)) { return('not_allowed'); }
 3238:     my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$domain,$stuname);
 3239:     my @parts_graded;
 3240:     my %newrecord  = ();
 3241:     my ($pts,$wgt,$totchg) = ('','',0);
 3242:     my %aggregate = ();
 3243:     my $aggregateflag = 0;
 3244:     if ($env{'form.HIDE'.$newflg}) {
 3245:         my ($version,$parts) = split(/:/,$env{'form.HIDE'.$newflg},2);
 3246:         my $numchgs = &makehidden($version,$parts,\%record,$symb,$domain,$stuname,1);
 3247:         $totchg += $numchgs;
 3248:     }
 3249:     my @parts = split(/:/,$env{'form.partlist'.$newflg});
 3250:     foreach my $new_part (@parts) {
 3251: 	#collaborator ($submi may vary for different parts
 3252: 	if ($submitter && $new_part ne $part) { next; }
 3253: 	my $dropMenu = $env{'form.GD_SEL'.$newflg.'_'.$new_part};
 3254: 	if ($dropMenu eq 'excused') {
 3255: 	    if ($record{'resource.'.$new_part.'.solved'} ne 'excused') {
 3256: 		$newrecord{'resource.'.$new_part.'.solved'} = 'excused';
 3257: 		if (exists($record{'resource.'.$new_part.'.awarded'})) {
 3258: 		    $newrecord{'resource.'.$new_part.'.awarded'} = '';
 3259: 		}
 3260: 	        $newrecord{'resource.'.$new_part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
 3261: 	    }
 3262: 	} elsif ($dropMenu eq 'reset status'
 3263: 		 && exists($record{'resource.'.$new_part.'.solved'})) { #don't bother if no old records -> no attempts
 3264: 	    foreach my $key (keys(%record)) {
 3265: 		if ($key=~/^resource\.\Q$new_part\E\./) { $newrecord{$key} = ''; }
 3266: 	    }
 3267: 	    $newrecord{'resource.'.$new_part.'.regrader'}=
 3268: 		"$env{'user.name'}:$env{'user.domain'}";
 3269:             my $totaltries = $record{'resource.'.$part.'.tries'};
 3270: 
 3271:             my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
 3272: 					       [$new_part]);
 3273:             my $aggtries =$totaltries;
 3274:             if ($last_resets{$new_part}) {
 3275:                 $aggtries = &get_num_tries(\%record,$last_resets{$new_part},
 3276: 					   $new_part);
 3277:             }
 3278: 
 3279:             my $solvedstatus = $record{'resource.'.$new_part.'.solved'};
 3280:             if ($aggtries > 0) {
 3281:                 &decrement_aggs($symb,$new_part,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 3282:                 $aggregateflag = 1;
 3283:             }
 3284: 	} elsif ($dropMenu eq '') {
 3285: 	    $pts = ($env{'form.GD_BOX'.$newflg.'_'.$new_part} ne '' ? 
 3286: 		    $env{'form.GD_BOX'.$newflg.'_'.$new_part} : 
 3287: 		    $env{'form.RADVAL'.$newflg.'_'.$new_part});
 3288: 	    if ($pts eq '' && $env{'form.GD_SEL'.$newflg.'_'.$new_part} eq '') {
 3289: 		next;
 3290: 	    }
 3291: 	    $wgt = $env{'form.WGT'.$newflg.'_'.$new_part} eq '' ? 1 : 
 3292: 		$env{'form.WGT'.$newflg.'_'.$new_part};
 3293: 	    my $partial= $pts/$wgt;
 3294: 	    if ($partial eq $record{'resource.'.$new_part.'.awarded'}) {
 3295: 		#do not update score for part if not changed.
 3296:                 &handback_files($request,$symb,$stuname,$domain,$newflg,$new_part,\%newrecord);
 3297: 		next;
 3298: 	    } else {
 3299: 	        push(@parts_graded,$new_part);
 3300: 	    }
 3301: 	    if ($record{'resource.'.$new_part.'.awarded'} ne $partial) {
 3302: 		$newrecord{'resource.'.$new_part.'.awarded'}  = $partial;
 3303: 	    }
 3304: 	    my $reckey = 'resource.'.$new_part.'.solved';
 3305: 	    if ($partial == 0) {
 3306: 		if ($record{$reckey} ne 'incorrect_by_override') {
 3307: 		    $newrecord{$reckey} = 'incorrect_by_override';
 3308: 		}
 3309: 	    } else {
 3310: 		if ($record{$reckey} ne 'correct_by_override') {
 3311: 		    $newrecord{$reckey} = 'correct_by_override';
 3312: 		}
 3313: 	    }	    
 3314: 	    if ($submitter && 
 3315: 		($record{'resource.'.$new_part.'.submitted_by'} ne $submitter)) {
 3316: 		$newrecord{'resource.'.$new_part.'.submitted_by'} = $submitter;
 3317: 	    }
 3318: 	    $newrecord{'resource.'.$new_part.'.regrader'}=
 3319: 		"$env{'user.name'}:$env{'user.domain'}";
 3320: 	}
 3321: 	# unless problem has been graded, set flag to version the submitted files
 3322: 	unless ($record{'resource.'.$new_part.'.solved'} =~ /^correct_/  || 
 3323: 	        $record{'resource.'.$new_part.'.solved'} eq 'incorrect_by_override' ||
 3324: 	        $dropMenu eq 'reset status')
 3325: 	   {
 3326: 	    push(@version_parts,$new_part);
 3327: 	}
 3328:     }
 3329:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3330:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3331: 
 3332:     if (%newrecord) {
 3333:         if (@version_parts) {
 3334:             my @changed_keys = &version_portfiles(\%record, \@parts_graded, 
 3335:                                 $env{'request.course.id'}, $symb, $domain, $stuname, \@version_parts);
 3336: 	    @newrecord{@changed_keys} = @record{@changed_keys};
 3337: 	    foreach my $new_part (@version_parts) {
 3338: 		&handback_files($request,$symb,$stuname,$domain,$newflg,
 3339: 				$new_part,\%newrecord);
 3340: 	    }
 3341:         }
 3342: 	&Apache::lonnet::cstore(\%newrecord,$symb,
 3343: 				$env{'request.course.id'},$domain,$stuname);
 3344: 	&check_and_remove_from_queue(\@parts,\%record,\%newrecord,$symb,
 3345: 				     $cdom,$cnum,$domain,$stuname);
 3346:     }
 3347:     if ($aggregateflag) {
 3348:         &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 3349: 			      $cdom,$cnum);
 3350:     }
 3351:     return ('',$pts,$wgt,$totchg);
 3352: }
 3353: 
 3354: sub makehidden {
 3355:     my ($version,$parts,$record,$symb,$domain,$stuname,$tolog) = @_;
 3356:     return unless (ref($record) eq 'HASH');
 3357:     my %modified;
 3358:     my $numchanged = 0;
 3359:     if (exists($record->{$version.':keys'})) {
 3360:         my $partsregexp = $parts;
 3361:         $partsregexp =~ s/,/|/g;
 3362:         foreach my $key (split(/\:/,$record->{$version.':keys'})) {
 3363:             if ($key =~ /^resource\.(?:$partsregexp)\.([^\.]+)$/) {
 3364:                  my $item = $1;
 3365:                  unless (($item eq 'solved') || ($item =~ /^award(|msg|ed)$/)) {
 3366:                      $modified{$key} = $record->{$version.':'.$key};
 3367:                  }
 3368:             } elsif ($key =~ m{^(resource\.(?:$partsregexp)\.[^\.]+\.)(.+)$}) {
 3369:                 $modified{$1.'hidden'.$2} = $record->{$version.':'.$key};
 3370:             } elsif ($key =~ /^(ip|timestamp|host)$/) {
 3371:                 $modified{$key} = $record->{$version.':'.$key};
 3372:             }
 3373:         }
 3374:         if (keys(%modified)) {
 3375:             if (&Apache::lonnet::putstore($env{'request.course.id'},$symb,$version,\%modified,
 3376:                                           $domain,$stuname,$tolog) eq 'ok') {
 3377:                 $numchanged ++;
 3378:             }
 3379:         }
 3380:     }
 3381:     return $numchanged;
 3382: }
 3383: 
 3384: sub check_and_remove_from_queue {
 3385:     my ($parts,$record,$newrecord,$symb,$cdom,$cnum,$domain,$stuname) = @_;
 3386:     my @ungraded_parts;
 3387:     foreach my $part (@{$parts}) {
 3388: 	if (    $record->{   'resource.'.$part.'.awarded'} eq ''
 3389: 	     && $record->{   'resource.'.$part.'.solved' } ne 'excused'
 3390: 	     && $newrecord->{'resource.'.$part.'.awarded'} eq ''
 3391: 	     && $newrecord->{'resource.'.$part.'.solved' } ne 'excused'
 3392: 		) {
 3393: 	    push(@ungraded_parts, $part);
 3394: 	}
 3395:     }
 3396:     if ( !@ungraded_parts ) {
 3397: 	&Apache::bridgetask::remove_from_queue('gradingqueue',$symb,$cdom,
 3398: 					       $cnum,$domain,$stuname);
 3399:     }
 3400: }
 3401: 
 3402: sub handback_files {
 3403:     my ($request,$symb,$stuname,$domain,$newflg,$new_part,$newrecord) = @_;
 3404:     my $portfolio_root = '/userfiles/portfolio';
 3405:     my $res_error;
 3406:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
 3407:     if ($res_error) {
 3408:         $request->print('<br />'.&navmap_errormsg().'<br />');
 3409:         return;
 3410:     }
 3411:     my @handedback;
 3412:     my $file_msg;
 3413:     my @part_response_id = &flatten_responseType($responseType);
 3414:     foreach my $part_response_id (@part_response_id) {
 3415:     	my ($part_id,$resp_id) = @{ $part_response_id };
 3416: 	my $part_resp = join('_',@{ $part_response_id });
 3417:         if (($env{'form.'.$newflg.'_'.$part_resp.'_countreturndoc'} =~ /^\d+$/) & ($new_part eq $part_id)) {
 3418:             for (my $counter=1; $counter<=$env{'form.'.$newflg.'_'.$part_resp.'_countreturndoc'}; $counter++) {
 3419:                 # if multiple files are uploaded names will be 'returndoc2','returndoc3' 
 3420:                 if ($env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$counter}) {
 3421:                     my $fname=$env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$counter.'.filename'};
 3422:                     my ($directory,$answer_file) = 
 3423:                         ($env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$counter} =~ /^(.*?)([^\/]*)$/);
 3424:                     my ($answer_name,$answer_ver,$answer_ext) =
 3425: 		        &Apache::lonnet::file_name_version_ext($answer_file);
 3426: 		    my ($portfolio_path) = ($directory =~ /^.+$stuname\/portfolio(.*)/);
 3427:                     my $getpropath = 1;
 3428:                     my ($dir_list,$listerror) = 
 3429:                         &Apache::lonnet::dirlist($portfolio_root.$portfolio_path,
 3430:                                                  $domain,$stuname,$getpropath);
 3431: 		    my $version = &Apache::lonnet::get_next_version($answer_name,$answer_ext,$dir_list);
 3432:                     # fix filename
 3433:                     my ($save_file_name) = (($directory.$answer_name.".$version.".$answer_ext) =~ /^.+\/${stuname}\/(.*)/);
 3434:                     my $result=&Apache::lonnet::finishuserfileupload($stuname,$domain,
 3435:             	                                $newflg.'_'.$part_resp.'_returndoc'.$counter,
 3436:             	                                $save_file_name);
 3437:                     if ($result !~ m|^/uploaded/|) {
 3438:                         $request->print('<br /><span class="LC_error">'.
 3439:                             &mt('An error occurred ([_1]) while trying to upload [_2].',
 3440:                                 $result,$newflg.'_'.$part_resp.'_returndoc'.$counter).
 3441:                                         '</span>');
 3442:                     } else {
 3443:                         # mark the file as read only
 3444:                         push(@handedback,$save_file_name);
 3445: 			if (exists($$newrecord{"resource.$new_part.$resp_id.handback"})) {
 3446: 			    $$newrecord{"resource.$new_part.$resp_id.handback"}.=',';
 3447: 			}
 3448:                         $$newrecord{"resource.$new_part.$resp_id.handback"} .= $save_file_name;
 3449: 			$file_msg.= '<span class="LC_filename"><a href="/uploaded/'."$domain/$stuname/".$save_file_name.'">'.$save_file_name."</a></span> <br />";
 3450:                     }
 3451:                     $request->print('<br />'.&mt('[_1] will be the uploaded filename [_2]','<span class="LC_info">'.$fname.'</span>','<span class="LC_filename">'.$env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$counter}.'</span>'));
 3452:                 }
 3453:             }
 3454:         }
 3455:     }
 3456:     if (@handedback > 0) {
 3457:         $request->print('<br />');
 3458:         my @what = ($symb,$env{'request.course.id'},'handback');
 3459:         &Apache::lonnet::mark_as_readonly($domain,$stuname,\@handedback,\@what);
 3460:         my $user_lh = &Apache::loncommon::user_lang($stuname,$domain,$env{'request.course.id'});    
 3461:         my ($subject,$message);
 3462:         if (scalar(@handedback) == 1) {
 3463:             $subject = &mt_user($user_lh,'File Handed Back by Instructor');
 3464:             $message = &mt_user($user_lh,'A file has been returned that was originally submitted in response to: ');
 3465:         } else {
 3466:             $subject = &mt_user($user_lh,'Files Handed Back by Instructor');
 3467:             $message = &mt_user($user_lh,'Files have been returned that were originally submitted in response to: ');
 3468:         }
 3469:         $message .= "<p><strong>".&Apache::lonnet::gettitle($symb)." </strong></p>";
 3470:         $message .= &mt_user($user_lh,'The returned file(s) are named: [_1]',"<br />$file_msg <br />").
 3471:                     &mt_user($user_lh,'The file(s) can be found in your [_1]portfolio[_2].','<a href="/adm/portfolio">','</a>');
 3472:         my ($feedurl,$showsymb) =
 3473:             &get_feedurl_and_symb($symb,$domain,$stuname);
 3474:         my $restitle = &Apache::lonnet::gettitle($symb);
 3475:         $subject .= ' '.&mt_user($user_lh,'(File Returned)').' ['.$restitle.']';
 3476:         my $msgstatus =
 3477:              &Apache::lonmsg::user_normal_msg($stuname,$domain,$subject,
 3478:                  $message,undef,$feedurl,undef,undef,undef,$showsymb,
 3479:                  $restitle);
 3480:         if ($msgstatus) {
 3481:             $request->print(&mt('Notification message status: [_1]','<span class="LC_info">'.$msgstatus.'</span>').'<br />');
 3482:         }
 3483:     }
 3484:     return;
 3485: }
 3486: 
 3487: sub get_feedurl_and_symb {
 3488:     my ($symb,$uname,$udom) = @_;
 3489:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 3490:     $url = &Apache::lonnet::clutter($url);
 3491:     my $encrypturl=&Apache::lonnet::EXT('resource.0.encrypturl',
 3492: 					$symb,$udom,$uname);
 3493:     if ($encrypturl =~ /^yes$/i) {
 3494: 	&Apache::lonenc::encrypted(\$url,1);
 3495: 	&Apache::lonenc::encrypted(\$symb,1);
 3496:     }
 3497:     return ($url,$symb);
 3498: }
 3499: 
 3500: sub get_submitted_files {
 3501:     my ($udom,$uname,$partid,$respid,$record) = @_;
 3502:     my @files;
 3503:     if ($$record{"resource.$partid.$respid.portfiles"}) {
 3504:         my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio';
 3505:         foreach my $file (split(',',$$record{"resource.$partid.$respid.portfiles"})) {
 3506:     	    push(@files,$file_url.$file);
 3507:         }
 3508:     }
 3509:     if ($$record{"resource.$partid.$respid.uploadedurl"}) {
 3510:         push(@files,$$record{"resource.$partid.$respid.uploadedurl"});
 3511:     }
 3512:     return (\@files);
 3513: }
 3514: 
 3515: # ----------- Provides number of tries since last reset.
 3516: sub get_num_tries {
 3517:     my ($record,$last_reset,$part) = @_;
 3518:     my $timestamp = '';
 3519:     my $num_tries = 0;
 3520:     if ($$record{'version'}) {
 3521:         for (my $version=$$record{'version'};$version>=1;$version--) {
 3522:             if (exists($$record{$version.':resource.'.$part.'.solved'})) {
 3523:                 $timestamp = $$record{$version.':timestamp'};
 3524:                 if ($timestamp > $last_reset) {
 3525:                     $num_tries ++;
 3526:                 } else {
 3527:                     last;
 3528:                 }
 3529:             }
 3530:         }
 3531:     }
 3532:     return $num_tries;
 3533: }
 3534: 
 3535: # ----------- Determine decrements required in aggregate totals 
 3536: sub decrement_aggs {
 3537:     my ($symb,$part,$aggregate,$aggtries,$totaltries,$solvedstatus) = @_;
 3538:     my %decrement = (
 3539:                         attempts => 0,
 3540:                         users => 0,
 3541:                         correct => 0
 3542:                     );
 3543:     $decrement{'attempts'} = $aggtries;
 3544:     if ($solvedstatus =~ /^correct/) {
 3545:         $decrement{'correct'} = 1;
 3546:     }
 3547:     if ($aggtries == $totaltries) {
 3548:         $decrement{'users'} = 1;
 3549:     }
 3550:     foreach my $type (keys(%decrement)) {
 3551:         $$aggregate{$symb."\0".$part."\0".$type} = -$decrement{$type};
 3552:     }
 3553:     return;
 3554: }
 3555: 
 3556: # ----------- Determine timestamps for last reset of aggregate totals for parts  
 3557: sub get_last_resets {
 3558:     my ($symb,$courseid,$partids) =@_;
 3559:     my %last_resets;
 3560:     my $cdom = $env{'course.'.$courseid.'.domain'};
 3561:     my $cname = $env{'course.'.$courseid.'.num'};
 3562:     my @keys;
 3563:     foreach my $part (@{$partids}) {
 3564: 	push(@keys,"$symb\0$part\0resettime");
 3565:     }
 3566:     my %results=&Apache::lonnet::get('nohist_resourcetracker',\@keys,
 3567: 				     $cdom,$cname);
 3568:     foreach my $part (@{$partids}) {
 3569: 	$last_resets{$part}=$results{"$symb\0$part\0resettime"};
 3570:     }
 3571:     return %last_resets;
 3572: }
 3573: 
 3574: # ----------- Handles creating versions for portfolio files as answers
 3575: sub version_portfiles {
 3576:     my ($record, $parts_graded, $courseid, $symb, $domain, $stu_name, $v_flag) = @_;
 3577:     my $version_parts = join('|',@$v_flag);
 3578:     my @returned_keys;
 3579:     my $parts = join('|', @$parts_graded);
 3580:     foreach my $key (keys(%$record)) {
 3581:         my $new_portfiles;
 3582:         if ($key =~ /^resource\.($version_parts)\./ && $key =~ /\.portfiles$/ ) {
 3583:             my @versioned_portfiles;
 3584:             my @portfiles = split(/\s*,\s*/,$$record{$key});
 3585:             if (@portfiles) {
 3586:                 &Apache::lonnet::portfiles_versioning($symb,$domain,$stu_name,\@portfiles,
 3587:                                                       \@versioned_portfiles);
 3588:             }
 3589:             $$record{$key} = join(',',@versioned_portfiles);
 3590:             push(@returned_keys,$key);
 3591:         }
 3592:     } 
 3593:     return (@returned_keys);   
 3594: }
 3595: 
 3596: #--------------------------------------------------------------------------------------
 3597: #
 3598: #-------------------------- Next few routines handles grading by section or whole class
 3599: #
 3600: #--- Javascript to handle grading by section or whole class
 3601: sub viewgrades_js {
 3602:     my ($request) = shift;
 3603: 
 3604:     my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 3605:     &js_escape(\$alertmsg);
 3606:     $request->print(&Apache::lonhtmlcommon::scripttag(<<VIEWJAVASCRIPT));
 3607:    function writePoint(partid,weight,point) {
 3608: 	var radioButton = document.classgrade["RADVAL_"+partid];
 3609: 	var textbox = document.classgrade["TEXTVAL_"+partid];
 3610: 	if (point == "textval") {
 3611: 	    point = document.classgrade["TEXTVAL_"+partid].value;
 3612: 	    if (isNaN(point) || parseFloat(point) < 0) {
 3613: 		alert("$alertmsg"+parseFloat(point));
 3614: 		var resetbox = false;
 3615: 		for (var i=0; i<radioButton.length; i++) {
 3616: 		    if (radioButton[i].checked) {
 3617: 			textbox.value = i;
 3618: 			resetbox = true;
 3619: 		    }
 3620: 		}
 3621: 		if (!resetbox) {
 3622: 		    textbox.value = "";
 3623: 		}
 3624: 		return;
 3625: 	    }
 3626: 	    if (parseFloat(point) > parseFloat(weight)) {
 3627: 		var resp = confirm("You entered a value ("+parseFloat(point)+
 3628: 				   ") greater than the weight for the part. Accept?");
 3629: 		if (resp == false) {
 3630: 		    textbox.value = "";
 3631: 		    return;
 3632: 		}
 3633: 	    }
 3634: 	    for (var i=0; i<radioButton.length; i++) {
 3635: 		radioButton[i].checked=false;
 3636: 		if (parseFloat(point) == i) {
 3637: 		    radioButton[i].checked=true;
 3638: 		}
 3639: 	    }
 3640: 
 3641: 	} else {
 3642: 	    textbox.value = parseFloat(point);
 3643: 	}
 3644: 	for (i=0;i<document.classgrade.total.value;i++) {
 3645: 	    var user = document.classgrade["ctr"+i].value;
 3646: 	    user = user.replace(new RegExp(':', 'g'),"_");
 3647: 	    var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3648: 	    var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3649: 	    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3650: 	    if (saveval != "correct") {
 3651: 		scorename.value = point;
 3652: 		if (selname[0].selected != true) {
 3653: 		    selname[0].selected = true;
 3654: 		}
 3655: 	    }
 3656: 	}
 3657: 	document.classgrade["SELVAL_"+partid][0].selected = true;
 3658:     }
 3659: 
 3660:     function writeRadText(partid,weight) {
 3661: 	var selval   = document.classgrade["SELVAL_"+partid];
 3662: 	var radioButton = document.classgrade["RADVAL_"+partid];
 3663:         var override = document.classgrade["FORCE_"+partid].checked;
 3664: 	var textbox = document.classgrade["TEXTVAL_"+partid];
 3665: 	if (selval[1].selected || selval[2].selected) {
 3666: 	    for (var i=0; i<radioButton.length; i++) {
 3667: 		radioButton[i].checked=false;
 3668: 
 3669: 	    }
 3670: 	    textbox.value = "";
 3671: 
 3672: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3673: 		var user = document.classgrade["ctr"+i].value;
 3674: 		user = user.replace(new RegExp(':', 'g'),"_");
 3675: 		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3676: 		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3677: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3678: 		if ((saveval != "correct") || override) {
 3679: 		    scorename.value = "";
 3680: 		    if (selval[1].selected) {
 3681: 			selname[1].selected = true;
 3682: 		    } else {
 3683: 			selname[2].selected = true;
 3684: 			if (Number(document.classgrade["GD_"+user+"_"+partid+"_tries"].value)) 
 3685: 			{document.classgrade["GD_"+user+"_"+partid+"_tries"].value = '0';}
 3686: 		    }
 3687: 		}
 3688: 	    }
 3689: 	} else {
 3690: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3691: 		var user = document.classgrade["ctr"+i].value;
 3692: 		user = user.replace(new RegExp(':', 'g'),"_");
 3693: 		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3694: 		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3695: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3696: 		if ((saveval != "correct") || override) {
 3697: 		    scorename.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
 3698: 		    selname[0].selected = true;
 3699: 		}
 3700: 	    }
 3701: 	}	    
 3702:     }
 3703: 
 3704:     function changeSelect(partid,user) {
 3705: 	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
 3706: 	var textbox = document.classgrade["GD_"+user+'_'+partid+"_awarded"];
 3707: 	var point  = textbox.value;
 3708: 	var weight = document.classgrade["weight_"+partid].value;
 3709: 
 3710: 	if (isNaN(point) || parseFloat(point) < 0) {
 3711: 	    alert("$alertmsg"+parseFloat(point));
 3712: 	    textbox.value = "";
 3713: 	    return;
 3714: 	}
 3715: 	if (parseFloat(point) > parseFloat(weight)) {
 3716: 	    var resp = confirm("You entered a value ("+parseFloat(point)+
 3717: 			       ") greater than the weight of the part. Accept?");
 3718: 	    if (resp == false) {
 3719: 		textbox.value = "";
 3720: 		return;
 3721: 	    }
 3722: 	}
 3723: 	selval[0].selected = true;
 3724:     }
 3725: 
 3726:     function changeOneScore(partid,user) {
 3727: 	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
 3728: 	if (selval[1].selected || selval[2].selected) {
 3729: 	    document.classgrade["GD_"+user+'_'+partid+"_awarded"].value = "";
 3730: 	    if (selval[2].selected) {
 3731: 		document.classgrade["GD_"+user+'_'+partid+"_tries"].value = "0";
 3732: 	    }
 3733:         }
 3734:     }
 3735: 
 3736:     function resetEntry(numpart) {
 3737: 	for (ctpart=0;ctpart<numpart;ctpart++) {
 3738: 	    var partid = document.classgrade["partid_"+ctpart].value;
 3739: 	    var radioButton = document.classgrade["RADVAL_"+partid];
 3740: 	    var textbox = document.classgrade["TEXTVAL_"+partid];
 3741: 	    var selval  = document.classgrade["SELVAL_"+partid];
 3742: 	    for (var i=0; i<radioButton.length; i++) {
 3743: 		radioButton[i].checked=false;
 3744: 
 3745: 	    }
 3746: 	    textbox.value = "";
 3747: 	    selval[0].selected = true;
 3748: 
 3749: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3750: 		var user = document.classgrade["ctr"+i].value;
 3751: 		user = user.replace(new RegExp(':', 'g'),"_");
 3752: 		var resetscore = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3753: 		resetscore.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
 3754: 		var resettries = document.classgrade["GD_"+user+"_"+partid+"_tries"];
 3755: 		resettries.value = document.classgrade["GD_"+user+"_"+partid+"_tries_s"].value;
 3756: 		var saveselval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3757: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3758: 		if (saveselval == "excused") {
 3759: 		    if (selname[1].selected == false) { selname[1].selected = true;}
 3760: 		} else {
 3761: 		    if (selname[0].selected == false) {selname[0].selected = true};
 3762: 		}
 3763: 	    }
 3764: 	}
 3765:     }
 3766: 
 3767: VIEWJAVASCRIPT
 3768: }
 3769: 
 3770: #--- show scores for a section or whole class w/ option to change/update a score
 3771: sub viewgrades {
 3772:     my ($request,$symb) = @_;
 3773:     my ($is_tool,$toolsymb);
 3774:     if ($symb =~ /ext\.tool$/) {
 3775:         $is_tool = 1;
 3776:         $toolsymb = $symb;
 3777:     }
 3778:     &viewgrades_js($request);
 3779: 
 3780:     #need to make sure we have the correct data for later EXT calls, 
 3781:     #thus invalidate the cache
 3782:     &Apache::lonnet::devalidatecourseresdata(
 3783:                  $env{'course.'.$env{'request.course.id'}.'.num'},
 3784:                  $env{'course.'.$env{'request.course.id'}.'.domain'});
 3785:     &Apache::lonnet::clear_EXT_cache_status();
 3786: 
 3787:     my $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>';
 3788: 
 3789:     #view individual student submission form - called using Javascript viewOneStudent
 3790:     $result.=&jscriptNform($symb);
 3791: 
 3792:     #beginning of class grading form
 3793:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 3794:     $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
 3795: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 3796: 	'<input type="hidden" name="command" value="editgrades" />'."\n".
 3797: 	&build_section_inputs().
 3798: 	'<input type="hidden" name="Status" value="'.$env{'stu_status'}.'" />'."\n".
 3799: 
 3800:     #retrieve selected groups
 3801:     my (@groups,$group_display);
 3802:     @groups = &Apache::loncommon::get_env_multiple('form.group');
 3803:     if (grep(/^all$/,@groups)) {
 3804:         @groups = ('all');
 3805:     } elsif (grep(/^none$/,@groups)) {
 3806:         @groups = ('none');
 3807:     } elsif (@groups > 0) {
 3808:         $group_display = join(', ',@groups);
 3809:     }
 3810: 
 3811:     my ($common_header,$specific_header,@sections,$section_display);
 3812:     @sections = &Apache::loncommon::get_env_multiple('form.section');
 3813:     if (grep(/^all$/,@sections)) {
 3814:         @sections = ('all');
 3815:         if ($group_display) {
 3816:             $common_header = &mt('Assign Common Grade to Students in Group(s) [_1]',$group_display);
 3817:             $specific_header = &mt('Assign Grade to Specific Students in Group(s) [_1]',$group_display);
 3818:         } elsif (grep(/^none$/,@groups)) {
 3819:             $common_header = &mt('Assign Common Grade to Students not assigned to any groups');
 3820:             $specific_header = &mt('Assign Grade to Specific Students not assigned to any groups');
 3821:         } else {
 3822: 	    $common_header = &mt('Assign Common Grade to Class');
 3823:             $specific_header = &mt('Assign Grade to Specific Students in Class');
 3824:         }
 3825:     } elsif (grep(/^none$/,@sections)) {
 3826:         @sections = ('none');
 3827:         if ($group_display) {
 3828:             $common_header = &mt('Assign Common Grade to Students in no Section and in Group(s) [_1]',$group_display);
 3829:             $specific_header = &mt('Assign Grade to Specific Students in no Section and in Group(s)',$group_display);
 3830:         } elsif (grep(/^none$/,@groups)) {
 3831:             $common_header = &mt('Assign Common Grade to Students in no Section and in no Group');
 3832:             $specific_header = &mt('Assign Grade to Specific Students in no Section and in no Group');
 3833:         } else {
 3834:             $common_header = &mt('Assign Common Grade to Students in no Section');
 3835: 	    $specific_header = &mt('Assign Grade to Specific Students in no Section');
 3836:         }
 3837:     } else {
 3838:         $section_display = join (", ",@sections);
 3839:         if ($group_display) {
 3840:             $common_header = &mt('Assign Common Grade to Students in Section(s) [_1], and in Group(s) [_2]',
 3841:                                  $section_display,$group_display);
 3842:             $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1], and in Group(s) [_2]',
 3843:                                    $section_display,$group_display);
 3844:         } elsif (grep(/^none$/,@groups)) {
 3845:             $common_header = &mt('Assign Common Grade to Students in Section(s) [_1] and no Group',$section_display);
 3846:             $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1] and no Group',$section_display);
 3847:         } else {
 3848:             $common_header = &mt('Assign Common Grade to Students in Section(s) [_1]',$section_display);
 3849: 	    $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1]',$section_display);
 3850:         }
 3851:     }
 3852:     my %submit_types = &substatus_options();
 3853:     my $submission_status = $submit_types{$env{'form.submitonly'}};
 3854: 
 3855:     if ($env{'form.submitonly'} eq 'all') {
 3856:         $result.= '<h3>'.$common_header.'</h3>';
 3857:     } else {
 3858:         my $text;
 3859:         if ($is_tool) {
 3860:             $text = &mt('(transaction status: "[_1]")',$submission_status);
 3861:         } else {
 3862:             $text = &mt('(submission status: "[_1]")',$submission_status);
 3863:         }
 3864:         $result.= '<h3>'.$common_header.'&nbsp;'.$text.'</h3>';
 3865:     }
 3866:     $result .= &Apache::loncommon::start_data_table();
 3867:     #radio buttons/text box for assigning points for a section or class.
 3868:     #handles different parts of a problem
 3869:     my $res_error;
 3870:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
 3871:     if ($res_error) {
 3872:         return &navmap_errormsg();
 3873:     }
 3874:     my %weight = ();
 3875:     my $ctsparts = 0;
 3876:     my %seen = ();
 3877:     my @part_response_id;
 3878:     if ($is_tool) {
 3879:         @part_response_id = ([0,'']);
 3880:     } else {
 3881:         @part_response_id = &flatten_responseType($responseType);
 3882:     }
 3883:     foreach my $part_response_id (@part_response_id) {
 3884:     	my ($partid,$respid) = @{ $part_response_id };
 3885: 	my $part_resp = join('_',@{ $part_response_id });
 3886: 	next if $seen{$partid};
 3887: 	$seen{$partid}++;
 3888: #	my $handgrade=$$handgrade{$part_resp};
 3889: 	my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
 3890: 	$weight{$partid} = $wgt eq '' ? '1' : $wgt;
 3891: 
 3892: 	my $display_part=&get_display_part($partid,$symb);
 3893: 	my $radio.='<table border="0"><tr>';  
 3894: 	my $ctr = 0;
 3895: 	while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
 3896: 	    $radio.= '<td><label><input type="radio" name="RADVAL_'.$partid.'" '.
 3897: 		'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
 3898: 		','.$ctr.')" />'.$ctr."</label></td>\n";
 3899: 	    $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
 3900: 	    $ctr++;
 3901: 	}
 3902: 	$radio.='</tr></table>';
 3903: 	my $line = '<input type="text" name="TEXTVAL_'.
 3904: 	    $partid.'" size="4" '.'onchange="javascript:writePoint(\''.
 3905: 		$partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
 3906: 	    $weight{$partid}.' '.&mt('(problem weight)').'</td>'."\n";
 3907:         $line.= '<td><b>'.&mt('Grade Status').':</b>'.
 3908:             '<select name="SELVAL_'.$partid.'" '.
 3909:             'onchange="javascript:writeRadText(\''.$partid.'\','.
 3910:                 $weight{$partid}.')"> '.
 3911: 	    '<option selected="selected"> </option>'.
 3912: 	    '<option value="excused">'.&mt('excused').'</option>'.
 3913: 	    '<option value="reset status">'.&mt('reset status').'</option>'.
 3914: 	    '</select></td>'.
 3915:             '<td><label><input type="checkbox" name="FORCE_'.$partid.'" />'.&mt('Override "Correct"').'</label>';
 3916: 	$line.='<input type="hidden" name="partid_'.
 3917: 	    $ctsparts.'" value="'.$partid.'" />'."\n";
 3918: 	$line.='<input type="hidden" name="weight_'.
 3919: 	    $partid.'" value="'.$weight{$partid}.'" />'."\n";
 3920: 
 3921: 	$result.=
 3922: 	    &Apache::loncommon::start_data_table_row()."\n".
 3923: 	    '<td><b>'.&mt('Part:').'</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points:').'</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
 3924: 	    &Apache::loncommon::end_data_table_row()."\n";
 3925: 	$ctsparts++;
 3926:     }
 3927:     $result.=&Apache::loncommon::end_data_table()."\n".
 3928: 	'<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
 3929:     $result.='<input type="button" value="'.&mt('Revert to Default').'" '.
 3930: 	'onclick="javascript:resetEntry('.$ctsparts.');" />';
 3931: 
 3932:     #table listing all the students in a section/class
 3933:     #header of table
 3934:     if ($env{'form.submitonly'} eq 'all') {
 3935:         $result.= '<h3>'.$specific_header.'</h3>';
 3936:     } else {
 3937:         my $text;
 3938:         if ($is_tool) {
 3939:             $text = &mt('(transaction status: "[_1]")',$submission_status);
 3940:         } else {
 3941:             $text = &mt('(submission status: "[_1]")',$submission_status);
 3942:         }
 3943:         $result.= '<h3>'.$specific_header.'&nbsp;'.$text.'</h3>';
 3944:     }
 3945:     $result.= &Apache::loncommon::start_data_table().
 3946: 	      &Apache::loncommon::start_data_table_header_row().
 3947: 	      '<th>'.&mt('No.').'</th>'.
 3948: 	      '<th>'.&nameUserString('header')."</th>\n";
 3949:     my $partserror;
 3950:     my (@parts) = sort(&getpartlist($symb,\$partserror));
 3951:     if ($partserror) {
 3952:         return &navmap_errormsg();
 3953:     }
 3954:     my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
 3955:     my @partids = ();
 3956:     foreach my $part (@parts) {
 3957: 	my $display=&Apache::lonnet::metadata($url,$part.'.display',$toolsymb);
 3958:         my $narrowtext = &mt('Tries');
 3959: 	$display =~ s|^Number of Attempts|$narrowtext <br />|; # makes the column narrower
 3960: 	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name',$toolsymb); }
 3961: 	my ($partid) = &split_part_type($part);
 3962:         push(@partids,$partid);
 3963: #
 3964: # FIXME: Looks like $display looks at English text
 3965: #
 3966: 	my $display_part=&get_display_part($partid,$symb);
 3967: 	if ($display =~ /^Partial Credit Factor/) {
 3968: 	    $result.='<th>'.
 3969: 		&mt('Score Part: [_1][_2](weight = [_3])',
 3970: 		    $display_part,'<br />',$weight{$partid}).'</th>'."\n";
 3971: 	    next;
 3972: 	    
 3973: 	} else {
 3974: 	    if ($display =~ /Problem Status/) {
 3975: 		my $grade_status_mt = &mt('Grade Status');
 3976: 		$display =~ s{Problem Status}{$grade_status_mt<br />};
 3977: 	    }
 3978: 	    my $part_mt = &mt('Part:');
 3979: 	    $display =~s{\[Part: \Q$partid\E\]}{$part_mt $display_part};
 3980: 	}
 3981: 
 3982: 	$result.='<th>'.$display.'</th>'."\n";
 3983:     }
 3984:     $result.=&Apache::loncommon::end_data_table_header_row();
 3985: 
 3986:     my %last_resets = 
 3987: 	&get_last_resets($symb,$env{'request.course.id'},\@partids);
 3988: 
 3989:     #get info for each student
 3990:     #list all the students - with points and grade status
 3991:     my (undef,undef,$fullname) = &getclasslist(\@sections,'1',\@groups);
 3992:     my $ctr = 0;
 3993:     foreach (sort 
 3994: 	     {
 3995: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 3996: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 3997: 		 }
 3998: 		 return $a cmp $b;
 3999: 	     } (keys(%$fullname))) {
 4000: 	$result.=&viewstudentgrade($symb,$env{'request.course.id'},
 4001: 				   $_,$$fullname{$_},\@parts,\%weight,\$ctr,\%last_resets,$is_tool);
 4002:     }
 4003:     $result.=&Apache::loncommon::end_data_table();
 4004:     $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
 4005:     $result.='<input type="button" value="'.&mt('Save').'" '.
 4006: 	'onclick="javascript:submit();" target="_self" /></form>'."\n";
 4007:     if ($ctr == 0) {
 4008:         my $stu_status = join(' or ',&Apache::loncommon::get_env_multiple('form.Status'));
 4009:         $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>'.
 4010:                 '<span class="LC_warning">';
 4011:         if ($env{'form.submitonly'} eq 'all') {
 4012:             if (grep(/^all$/,@sections)) {
 4013:                 if (grep(/^all$/,@groups)) {
 4014:                     $result .= &mt('There are no students with enrollment status [_1] to modify or grade.',
 4015:                                    $stu_status);
 4016:                 } elsif (grep(/^none$/,@groups)) {
 4017:                     $result .= &mt('There are no students with no group assigned and with enrollment status [_1] to modify or grade.',
 4018:                                    $stu_status); 
 4019:                 } else {
 4020:                     $result .= &mt('There are no students in group(s) [_1] with enrollment status [_2] to modify or grade.',
 4021:                                    $group_display,$stu_status);
 4022:                 }
 4023:             } elsif (grep(/^none$/,@sections)) {
 4024:                 if (grep(/^all$/,@groups)) {
 4025:                     $result .= &mt('There are no students in no section with enrollment status [_1] to modify or grade.',
 4026:                                    $stu_status);
 4027:                 } elsif (grep(/^none$/,@groups)) {
 4028:                     $result .= &mt('There are no students in no section and no group with enrollment status [_1] to modify or grade.',
 4029:                                    $stu_status);
 4030:                 } else {
 4031:                     $result .= &mt('There are no students in no section in group(s) [_1] with enrollment status [_2] to modify or grade.',
 4032:                                    $group_display,$stu_status);
 4033:                 }
 4034:             } else {
 4035:                 if (grep(/^all$/,@groups)) {
 4036:                     $result .= &mt('There are no students in section(s) [_1] with enrollment status [_2] to modify or grade.',
 4037:                                    $section_display,$stu_status);
 4038:                 } elsif (grep(/^none$/,@groups)) {
 4039:                     $result .= &mt('There are no students in section(s) [_1] and no group with enrollment status [_2] to modify or grade.',
 4040:                                    $section_display,$stu_status);
 4041:                 } else {
 4042:                     $result .= &mt('There are no students in section(s) [_1] and group(s) [_2] with enrollment status [_3] to modify or grade.',
 4043:                                    $section_display,$group_display,$stu_status);
 4044:                 }
 4045:             }
 4046:         } else {
 4047:             if (grep(/^all$/,@sections)) {
 4048:                 if (grep(/^all$/,@groups)) {
 4049:                     $result .= &mt('There are no students with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4050:                                    $stu_status,$submission_status);
 4051:                 } elsif (grep(/^none$/,@groups)) {
 4052:                     $result .= &mt('There are no students with no group assigned with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4053:                                    $stu_status,$submission_status);
 4054:                 } else {
 4055:                     $result .= &mt('There are no students in group(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4056:                                    $group_display,$stu_status,$submission_status);
 4057:                 }
 4058:             } elsif (grep(/^none$/,@sections)) {
 4059:                 if (grep(/^all$/,@groups)) {
 4060:                     $result .= &mt('There are no students in no section with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4061:                                    $stu_status,$submission_status);
 4062:                 } elsif (grep(/^none$/,@groups)) {
 4063:                     $result .= &mt('There are no students in no section and no group with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4064:                                    $stu_status,$submission_status);
 4065:                 } else {
 4066:                     $result .= &mt('There are no students in no section in group(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4067:                                    $group_display,$stu_status,$submission_status);
 4068:                 }
 4069:             } else {
 4070:                 if (grep(/^all$/,@groups)) {
 4071: 	            $result .= &mt('There are no students in section(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4072: 	                           $section_display,$stu_status,$submission_status);
 4073:                 } elsif (grep(/^none$/,@groups)) {
 4074:                     $result .= &mt('There are no students in section(s) [_1] and no group with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4075:                                    $section_display,$stu_status,$submission_status);
 4076:                 } else {
 4077:                     $result .= &mt('There are no students in section(s) [_1] and group(s) [_2] with enrollment status [_3] and submission status "[_4]" to modify or grade.',
 4078:                                    $section_display,$group_display,$stu_status,$submission_status);
 4079:                 }
 4080:             }
 4081:         }
 4082: 	$result .= '</span><br />';
 4083:     }
 4084:     return $result;
 4085: }
 4086: 
 4087: #--- call by previous routine to display each student who satisfies submission filter. 
 4088: sub viewstudentgrade {
 4089:     my ($symb,$courseid,$student,$fullname,$parts,$weight,$ctr,$last_resets,$is_tool) = @_;
 4090:     my ($uname,$udom) = split(/:/,$student);
 4091:     my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
 4092:     my $submitonly = $env{'form.submitonly'};
 4093:     unless (($submitonly eq 'all') || ($submitonly eq 'queued')) {
 4094:         my %partstatus = ();
 4095:         if (ref($parts) eq 'ARRAY') {
 4096:             foreach my $apart (@{$parts}) {
 4097:                 my ($part,$type) = &split_part_type($apart);
 4098:                 my ($status,undef) = split(/_/,$record{"resource.$part.solved"},2);
 4099:                 $status = 'nothing' if ($status eq '');
 4100:                 $partstatus{$part}      = $status;
 4101:                 my $subkey = "resource.$part.submitted_by";
 4102:                 $partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
 4103:             }
 4104:             my $submitted = 0;
 4105:             my $graded = 0;
 4106:             my $incorrect = 0;
 4107:             foreach my $key (keys(%partstatus)) {
 4108:                 $submitted = 1 if ($partstatus{$key} ne 'nothing');
 4109:                 $graded = 1 if ($partstatus{$key} =~ /^ungraded/);
 4110:                 $incorrect = 1 if ($partstatus{$key} =~ /^incorrect/);
 4111: 
 4112:                 my $partid = (split(/\./,$key))[1];
 4113:                 if ($partstatus{'resource.'.$partid.'.'.$key.'.submitted_by'} ne '') {
 4114:                     $submitted = 0;
 4115:                 }
 4116:             }
 4117:             return if (!$submitted && ($submitonly eq 'yes' ||
 4118:                                        $submitonly eq 'incorrect' ||
 4119:                                        $submitonly eq 'graded'));
 4120:             return if (!$graded && ($submitonly eq 'graded'));
 4121:             return if (!$incorrect && $submitonly eq 'incorrect');
 4122:         }
 4123:     }
 4124:     if ($submitonly eq 'queued') {
 4125:         my ($cdom,$cnum) = split(/_/,$courseid);
 4126:         my %queue_status =
 4127:             &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
 4128:                                                     $udom,$uname);
 4129:         return if (!defined($queue_status{'gradingqueue'}));
 4130:     }
 4131:     $$ctr++;
 4132:     my %aggregates = ();
 4133:     my $result=&Apache::loncommon::start_data_table_row().'<td align="right">'.
 4134: 	'<input type="hidden" name="ctr'.($$ctr-1).'" value="'.$student.'" />'.
 4135: 	"\n".$$ctr.'&nbsp;</td><td>&nbsp;'.
 4136: 	'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
 4137: 	'\');" target="_self">'.$fullname.'</a> '.
 4138: 	'<span class="LC_internal_info">('.$uname.($env{'user.domain'} eq $udom ? '' : ':'.$udom).')</span></td>'."\n";
 4139:     $student=~s/:/_/; # colon doen't work in javascript for names
 4140:     foreach my $apart (@$parts) {
 4141: 	my ($part,$type) = &split_part_type($apart);
 4142: 	my $score=$record{"resource.$part.$type"};
 4143:         $result.='<td align="center">';
 4144:         my ($aggtries,$totaltries);
 4145:         unless (exists($aggregates{$part})) {
 4146: 	    $totaltries = $record{'resource.'.$part.'.tries'};
 4147: 	    $aggtries = $totaltries;
 4148:             if ($$last_resets{$part}) {  
 4149:                 $aggtries = &get_num_tries(\%record,$$last_resets{$part},
 4150: 					   $part);
 4151:             }
 4152:             $result.='<input type="hidden" name="'.
 4153:                 'GD_'.$student.'_'.$part.'_aggtries" value="'.$aggtries.'" />'."\n";
 4154:             $result.='<input type="hidden" name="'.
 4155:                 'GD_'.$student.'_'.$part.'_totaltries" value="'.$totaltries.'" />'."\n";
 4156:             $aggregates{$part} = 1;
 4157:         }
 4158: 	if ($type eq 'awarded') {
 4159: 	    my $pts = $score eq '' ? '' : &compute_points($score,$$weight{$part});
 4160: 	    $result.='<input type="hidden" name="'.
 4161: 		'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
 4162: 	    $result.='<input type="text" name="'.
 4163: 		'GD_'.$student.'_'.$part.'_awarded" '.
 4164:                 'onchange="javascript:changeSelect(\''.$part.'\',\''.$student.
 4165: 		'\')" value="'.$pts.'" size="4" /></td>'."\n";
 4166: 	} elsif ($type eq 'solved') {
 4167: 	    my ($status,$foo)=split(/_/,$score,2);
 4168: 	    $status = 'nothing' if ($status eq '');
 4169: 	    $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
 4170: 		$part.'_solved_s" value="'.$status.'" />'."\n";
 4171: 	    $result.='&nbsp;<select name="'.
 4172: 		'GD_'.$student.'_'.$part.'_solved" '.
 4173:                 'onchange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
 4174: 	    $result.= (($status eq 'excused') ? '<option> </option><option selected="selected" value="excused">'.&mt('excused').'</option>' 
 4175: 		: '<option selected="selected"> </option><option value="excused">'.&mt('excused').'</option>')."\n";
 4176: 	    $result.='<option value="reset status">'.&mt('reset status').'</option>';
 4177: 	    $result.="</select>&nbsp;</td>\n";
 4178: 	} else {
 4179: 	    $result.='<input type="hidden" name="'.
 4180: 		'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
 4181: 		    "\n";
 4182: 	    $result.='<input type="text" name="'.
 4183: 		'GD_'.$student.'_'.$part.'_'.$type.'" '.
 4184: 		'value="'.$score.'" size="4" /></td>'."\n";
 4185: 	}
 4186:     }
 4187:     $result.=&Apache::loncommon::end_data_table_row();
 4188:     return $result;
 4189: }
 4190: 
 4191: #--- change scores for all the students in a section/class
 4192: #    record does not get update if unchanged
 4193: sub editgrades {
 4194:     my ($request,$symb) = @_;
 4195:     my $toolsymb;
 4196:     if ($symb =~ /ext\.tool$/) {
 4197:         $toolsymb = $symb;
 4198:     }
 4199: 
 4200:     my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
 4201:     my $title='<h2>'.&mt('Current Grade Status').'</h2>';
 4202:     $title.='<h4>'.&mt('<b>Section: </b>[_1]',$section_display).'</h4>'."\n";
 4203: 
 4204:     my $result= &Apache::loncommon::start_data_table().
 4205: 	&Apache::loncommon::start_data_table_header_row().
 4206: 	'<th rowspan="2" valign="middle">'.&mt('No.').'</th>'.
 4207: 	'<th rowspan="2" valign="middle">'.&nameUserString('header')."</th>\n";
 4208:     my %scoreptr = (
 4209: 		    'correct'  =>'correct_by_override',
 4210: 		    'incorrect'=>'incorrect_by_override',
 4211: 		    'excused'  =>'excused',
 4212: 		    'ungraded' =>'ungraded_attempted',
 4213:                     'credited' =>'credit_attempted',
 4214: 		    'nothing'  => '',
 4215: 		    );
 4216:     my ($classlist,undef,$fullname) = &getclasslist($env{'form.section'},'0');
 4217: 
 4218:     my (@partid);
 4219:     my %weight = ();
 4220:     my %columns = ();
 4221:     my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
 4222: 
 4223:     my $partserror;
 4224:     my (@parts) = sort(&getpartlist($symb,\$partserror));
 4225:     if ($partserror) {
 4226:         return &navmap_errormsg();
 4227:     }
 4228:     my $header;
 4229:     while ($ctr < $env{'form.totalparts'}) {
 4230: 	my $partid = $env{'form.partid_'.$ctr};
 4231: 	push(@partid,$partid);
 4232: 	$weight{$partid} = $env{'form.weight_'.$partid};
 4233: 	$ctr++;
 4234:     }
 4235:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 4236:     my $totcolspan = 0;
 4237:     foreach my $partid (@partid) {
 4238: 	$header .= '<th align="center">'.&mt('Old Score').'</th>'.
 4239: 	    '<th align="center">'.&mt('New Score').'</th>';
 4240: 	$columns{$partid}=2;
 4241: 	foreach my $stores (@parts) {
 4242: 	    my ($part,$type) = &split_part_type($stores);
 4243: 	    if ($part !~ m/^\Q$partid\E/) { next;}
 4244: 	    if ($type eq 'awarded' || $type eq 'solved') { next; }
 4245: 	    my $display=&Apache::lonnet::metadata($url,$stores.'.display',$toolsymb);
 4246: 	    $display =~ s/\[Part: \Q$part\E\]//;
 4247:             my $narrowtext = &mt('Tries');
 4248: 	    $display =~ s/Number of Attempts/$narrowtext/;
 4249: 	    $header .= '<th align="center">'.&mt('Old').' '.$display.'</th>'.
 4250: 		'<th align="center">'.&mt('New').' '.$display.'</th>';
 4251: 	    $columns{$partid}+=2;
 4252: 	}
 4253:         $totcolspan += $columns{$partid};
 4254:     }
 4255:     foreach my $partid (@partid) {
 4256: 	my $display_part=&get_display_part($partid,$symb);
 4257: 	$result .= '<th colspan="'.$columns{$partid}.'" align="center">'.
 4258: 	    &mt('Part: [_1] (Weight = [_2])',$display_part,$weight{$partid}).
 4259: 	    '</th>';
 4260: 
 4261:     }
 4262:     $result .= &Apache::loncommon::end_data_table_header_row().
 4263: 	&Apache::loncommon::start_data_table_header_row().
 4264: 	$header.
 4265: 	&Apache::loncommon::end_data_table_header_row();
 4266:     my @noupdate;
 4267:     my ($updateCtr,$noupdateCtr) = (1,1);
 4268:     for ($i=0; $i<$env{'form.total'}; $i++) {
 4269: 	my $user = $env{'form.ctr'.$i};
 4270: 	my ($uname,$udom)=split(/:/,$user);
 4271: 	my %newrecord;
 4272: 	my $updateflag = 0;
 4273: 	my $usec=$classlist->{"$uname:$udom"}[5];
 4274: 	my $canmodify = &canmodify($usec);
 4275: 	my $line = '<td'.($canmodify?'':' colspan="2"').'>'.
 4276: 		   &nameUserString(undef,$$fullname{$user},$uname,$udom).'</td>';
 4277: 	if (!$canmodify) {
 4278: 	    push(@noupdate,
 4279: 		 $line."<td colspan=\"$totcolspan\"><span class=\"LC_warning\">".
 4280: 		 &mt('Not allowed to modify student')."</span></td>");
 4281: 	    next;
 4282: 	}
 4283:         my %aggregate = ();
 4284:         my $aggregateflag = 0;
 4285: 	$user=~s/:/_/; # colon doen't work in javascript for names
 4286: 	foreach (@partid) {
 4287: 	    my $old_aw    = $env{'form.GD_'.$user.'_'.$_.'_awarded_s'};
 4288: 	    my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
 4289: 	    my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
 4290: 	    my $old_score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
 4291: 	    my $awarded   = $env{'form.GD_'.$user.'_'.$_.'_awarded'};
 4292: 	    my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
 4293: 	    my $partial   = $awarded eq '' ? '' : $pcr;
 4294: 	    my $score;
 4295: 	    if ($partial eq '') {
 4296: 		$score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
 4297: 	    } elsif ($partial > 0) {
 4298: 		$score = 'correct_by_override';
 4299: 	    } elsif ($partial == 0) {
 4300: 		$score = 'incorrect_by_override';
 4301: 	    }
 4302: 	    my $dropMenu = $env{'form.GD_'.$user.'_'.$_.'_solved'};
 4303: 	    $score = 'excused' if (($dropMenu eq 'excused') && ($score ne 'excused'));
 4304: 
 4305: 	    $newrecord{'resource.'.$_.'.regrader'}=
 4306: 		"$env{'user.name'}:$env{'user.domain'}";
 4307: 	    if ($dropMenu eq 'reset status' &&
 4308: 		$old_score ne '') { # ignore if no previous attempts => nothing to reset
 4309: 		$newrecord{'resource.'.$_.'.tries'} = '';
 4310: 		$newrecord{'resource.'.$_.'.solved'} = '';
 4311: 		$newrecord{'resource.'.$_.'.award'} = '';
 4312: 		$newrecord{'resource.'.$_.'.awarded'} = '';
 4313: 		$updateflag = 1;
 4314:                 if ($env{'form.GD_'.$user.'_'.$_.'_aggtries'} > 0) {
 4315:                     my $aggtries = $env{'form.GD_'.$user.'_'.$_.'_aggtries'};
 4316:                     my $totaltries = $env{'form.GD_'.$user.'_'.$_.'_totaltries'};
 4317:                     my $solvedstatus = $env{'form.GD_'.$user.'_'.$_.'_solved_s'};
 4318:                     &decrement_aggs($symb,$_,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 4319:                     $aggregateflag = 1;
 4320:                 }
 4321: 	    } elsif (!($old_part eq $partial && $old_score eq $score)) {
 4322: 		$updateflag = 1;
 4323: 		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
 4324: 		$newrecord{'resource.'.$_.'.solved'}   = $score;
 4325: 		$rec_update++;
 4326: 	    }
 4327: 
 4328: 	    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 4329: 		'<td align="center">'.$awarded.
 4330: 		($score eq 'excused' ? $score : '').'&nbsp;</td>';
 4331: 
 4332: 
 4333: 	    my $partid=$_;
 4334: 	    foreach my $stores (@parts) {
 4335: 		my ($part,$type) = &split_part_type($stores);
 4336: 		if ($part !~ m/^\Q$partid\E/) { next;}
 4337: 		if ($type eq 'awarded' || $type eq 'solved') { next; }
 4338: 		my $old_aw    = $env{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
 4339: 		my $awarded   = $env{'form.GD_'.$user.'_'.$part.'_'.$type};
 4340: 		if ($awarded ne '' && $awarded ne $old_aw) {
 4341: 		    $newrecord{'resource.'.$part.'.'.$type}= $awarded;
 4342: 		    $newrecord{'resource.'.$part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
 4343: 		    $updateflag=1;
 4344: 		}
 4345: 		$line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 4346: 		    '<td align="center">'.$awarded.'&nbsp;</td>';
 4347: 	    }
 4348: 	}
 4349: 	$line.="\n";
 4350: 
 4351: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 4352: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 4353: 
 4354: 	if ($updateflag) {
 4355: 	    $count++;
 4356: 	    &Apache::lonnet::cstore(\%newrecord,$symb,$env{'request.course.id'},
 4357: 				    $udom,$uname);
 4358: 
 4359: 	    if (&Apache::bridgetask::in_queue('gradingqueue',$symb,$cdom,
 4360: 					      $cnum,$udom,$uname)) {
 4361: 		# need to figure out if should be in queue.
 4362: 		my %record =  
 4363: 		    &Apache::lonnet::restore($symb,$env{'request.course.id'},
 4364: 					     $udom,$uname);
 4365: 		my $all_graded = 1;
 4366: 		my $none_graded = 1;
 4367: 		foreach my $part (@parts) {
 4368: 		    if ( $record{'resource.'.$part.'.awarded'} eq '' ) {
 4369: 			$all_graded = 0;
 4370: 		    } else {
 4371: 			$none_graded = 0;
 4372: 		    }
 4373: 		}
 4374: 
 4375: 		if ($all_graded || $none_graded) {
 4376: 		    &Apache::bridgetask::remove_from_queue('gradingqueue',
 4377: 							   $symb,$cdom,$cnum,
 4378: 							   $udom,$uname);
 4379: 		}
 4380: 	    }
 4381: 
 4382: 	    $result.=&Apache::loncommon::start_data_table_row().
 4383: 		'<td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line.
 4384: 		&Apache::loncommon::end_data_table_row();
 4385: 	    $updateCtr++;
 4386: 	} else {
 4387: 	    push(@noupdate,
 4388: 		 '<td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line);
 4389: 	    $noupdateCtr++;
 4390: 	}
 4391:         if ($aggregateflag) {
 4392:             &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 4393: 				  $cdom,$cnum);
 4394:         }
 4395:     }
 4396:     if (@noupdate) {
 4397:         my $numcols=$totcolspan+2;
 4398: 	$result .= &Apache::loncommon::start_data_table_row('LC_empty_row').
 4399: 	    '<td align="center" colspan="'.$numcols.'">'.
 4400: 	    &mt('No Changes Occurred For the Students Below').
 4401: 	    '</td>'.
 4402: 	    &Apache::loncommon::end_data_table_row();
 4403: 	foreach my $line (@noupdate) {
 4404: 	    $result.=
 4405: 		&Apache::loncommon::start_data_table_row().
 4406: 		$line.
 4407: 		&Apache::loncommon::end_data_table_row();
 4408: 	}
 4409:     }
 4410:     $result .= &Apache::loncommon::end_data_table();
 4411:     my $msg = '<p><b>'.
 4412: 	&mt('Number of records updated = [_1] for [quant,_2,student].',
 4413: 	    $rec_update,$count).'</b><br />'.
 4414: 	'<b>'.&mt('Total number of students = [_1]',$env{'form.total'}).
 4415: 	'</b></p>';
 4416:     return $title.$msg.$result;
 4417: }
 4418: 
 4419: sub split_part_type {
 4420:     my ($partstr) = @_;
 4421:     my ($temp,@allparts)=split(/_/,$partstr);
 4422:     my $type=pop(@allparts);
 4423:     my $part=join('_',@allparts);
 4424:     return ($part,$type);
 4425: }
 4426: 
 4427: #------------- end of section for handling grading by section/class ---------
 4428: #
 4429: #----------------------------------------------------------------------------
 4430: 
 4431: 
 4432: #----------------------------------------------------------------------------
 4433: #
 4434: #-------------------------- Next few routines handles grading by csv upload
 4435: #
 4436: #--- Javascript to handle csv upload
 4437: sub csvupload_javascript_reverse_associate {
 4438:     my $error1=&mt('You need to specify the username, the student/employee ID, or the clicker ID');
 4439:     my $error2=&mt('You need to specify at least one grading field');
 4440:   &js_escape(\$error1);
 4441:   &js_escape(\$error2);
 4442:   return(<<ENDPICK);
 4443:   function verify(vf) {
 4444:     var foundsomething=0;
 4445:     var founduname=0;
 4446:     var foundID=0;
 4447:     var foundclicker=0;
 4448:     for (i=0;i<=vf.nfields.value;i++) {
 4449:       tw=eval('vf.f'+i+'.selectedIndex');
 4450:       if (i==0 && tw!=0) { foundID=1; }
 4451:       if (i==1 && tw!=0) { founduname=1; }
 4452:       if (i==2 && tw!=0) { foundclicker=1; }
 4453:       if (i!=0 && i!=1 && i!=2 && i!=3 && tw!=0) { foundsomething=1; }
 4454:     }
 4455:     if (founduname==0 && foundID==0 && foundclicker==0) {
 4456: 	alert('$error1');
 4457: 	return;
 4458:     }
 4459:     if (foundsomething==0) {
 4460: 	alert('$error2');
 4461: 	return;
 4462:     }
 4463:     vf.submit();
 4464:   }
 4465:   function flip(vf,tf) {
 4466:     var nw=eval('vf.f'+tf+'.selectedIndex');
 4467:     var i;
 4468:     for (i=0;i<=vf.nfields.value;i++) {
 4469:       //can not pick the same destination field for both name and domain
 4470:       if (((i ==0)||(i ==1)) && 
 4471:           ((tf==0)||(tf==1)) && 
 4472:           (i!=tf) &&
 4473:           (eval('vf.f'+i+'.selectedIndex')==nw)) {
 4474:         eval('vf.f'+i+'.selectedIndex=0;')
 4475:       }
 4476:     }
 4477:   }
 4478: ENDPICK
 4479: }
 4480: 
 4481: sub csvupload_javascript_forward_associate {
 4482:     my $error1=&mt('You need to specify the username, the student/employee ID, or the clicker ID');
 4483:     my $error2=&mt('You need to specify at least one grading field');
 4484:   &js_escape(\$error1);
 4485:   &js_escape(\$error2);
 4486:   return(<<ENDPICK);
 4487:   function verify(vf) {
 4488:     var foundsomething=0;
 4489:     var founduname=0;
 4490:     var foundID=0;
 4491:     var foundclicker=0;
 4492:     for (i=0;i<=vf.nfields.value;i++) {
 4493:       tw=eval('vf.f'+i+'.selectedIndex');
 4494:       if (tw==1) { foundID=1; }
 4495:       if (tw==2) { founduname=1; }
 4496:       if (tw==3) { foundclicker=1; }
 4497:       if (tw>4) { foundsomething=1; }
 4498:     }
 4499:     if (founduname==0 && foundID==0 && Æ’oundclicker==0) {
 4500: 	alert('$error1');
 4501: 	return;
 4502:     }
 4503:     if (foundsomething==0) {
 4504: 	alert('$error2');
 4505: 	return;
 4506:     }
 4507:     vf.submit();
 4508:   }
 4509:   function flip(vf,tf) {
 4510:     var nw=eval('vf.f'+tf+'.selectedIndex');
 4511:     var i;
 4512:     //can not pick the same destination field twice
 4513:     for (i=0;i<=vf.nfields.value;i++) {
 4514:       if ((i!=tf) && (eval('vf.f'+i+'.selectedIndex')==nw)) {
 4515:         eval('vf.f'+i+'.selectedIndex=0;')
 4516:       }
 4517:     }
 4518:   }
 4519: ENDPICK
 4520: }
 4521: 
 4522: sub csvuploadmap_header {
 4523:     my ($request,$symb,$datatoken,$distotal)= @_;
 4524:     my $javascript;
 4525:     if ($env{'form.upfile_associate'} eq 'reverse') {
 4526: 	$javascript=&csvupload_javascript_reverse_associate();
 4527:     } else {
 4528: 	$javascript=&csvupload_javascript_forward_associate();
 4529:     }
 4530: 
 4531:     $symb = &Apache::lonenc::check_encrypt($symb);
 4532:     $request->print('<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">'.
 4533:                     &mt('Total number of records found in file: [_1]',$distotal).'<hr />'.
 4534:                     &mt('Associate entries from the uploaded file with as many fields as you can.'));
 4535:     my $reverse=&mt("Reverse Association");
 4536:     $request->print(<<ENDPICK);
 4537: <br />
 4538: <input type="button" value="$reverse" onclick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
 4539: <input type="hidden" name="associate"  value="" />
 4540: <input type="hidden" name="phase"      value="three" />
 4541: <input type="hidden" name="datatoken"  value="$datatoken" />
 4542: <input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
 4543: <input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
 4544: <input type="hidden" name="upfile_associate" 
 4545:                                        value="$env{'form.upfile_associate'}" />
 4546: <input type="hidden" name="symb"       value="$symb" />
 4547: <input type="hidden" name="command"    value="csvuploadoptions" />
 4548: <hr />
 4549: ENDPICK
 4550:     $request->print(&Apache::lonhtmlcommon::scripttag($javascript));
 4551:     return '';
 4552: 
 4553: }
 4554: 
 4555: sub csvupload_fields {
 4556:     my ($symb,$errorref) = @_;
 4557:     my $toolsymb;
 4558:     if ($symb =~ /ext\.tool$/) {
 4559:         $toolsymb = $symb;
 4560:     }
 4561:     my (@parts) = &getpartlist($symb,$errorref);
 4562:     if (ref($errorref)) {
 4563:         if ($$errorref) {
 4564:             return;
 4565:         }
 4566:     }
 4567: 
 4568:     my @fields=(['ID','Student/Employee ID'],
 4569: 		['username','Student Username'],
 4570: 		['clicker','Clicker ID'],
 4571: 		['domain','Student Domain']);
 4572:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 4573:     foreach my $part (sort(@parts)) {
 4574: 	my @datum;
 4575: 	my $display=&Apache::lonnet::metadata($url,$part.'.display',$toolsymb);
 4576: 	my $name=$part;
 4577: 	if (!$display) { $display = $name; }
 4578: 	@datum=($name,$display);
 4579: 	if ($name=~/^stores_(.*)_awarded/) {
 4580: 	    push(@fields,['stores_'.$1.'_points',"Points [Part: $1]"]);
 4581: 	}
 4582: 	push(@fields,\@datum);
 4583:     }
 4584:     return (@fields);
 4585: }
 4586: 
 4587: sub csvuploadmap_footer {
 4588:     my ($request,$i,$keyfields) =@_;
 4589:     my $buttontext = &mt('Assign Grades');
 4590:     $request->print(<<ENDPICK);
 4591: </table>
 4592: <input type="hidden" name="nfields" value="$i" />
 4593: <input type="hidden" name="keyfields" value="$keyfields" />
 4594: <input type="button" onclick="javascript:verify(this.form)" value="$buttontext" /><br />
 4595: </form>
 4596: ENDPICK
 4597: }
 4598: 
 4599: sub checkforfile_js {
 4600:     my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
 4601:     &js_escape(\$alertmsg);
 4602:     my $result = &Apache::lonhtmlcommon::scripttag(<<CSVFORMJS);
 4603:     function checkUpload(formname) {
 4604: 	if (formname.upfile.value == "") {
 4605: 	    alert("$alertmsg");
 4606: 	    return false;
 4607: 	}
 4608: 	formname.submit();
 4609:     }
 4610: CSVFORMJS
 4611:     return $result;
 4612: }
 4613: 
 4614: sub upcsvScores_form {
 4615:     my ($request,$symb) = @_;
 4616:     if (!$symb) {return '';}
 4617:     my $result=&checkforfile_js();
 4618:     $result.=&Apache::loncommon::start_data_table().
 4619:              &Apache::loncommon::start_data_table_header_row().
 4620:              '<th>'.&mt('Specify a file containing the class scores for current resource.').'</th>'.
 4621:              &Apache::loncommon::end_data_table_header_row().
 4622:              &Apache::loncommon::start_data_table_row().'<td>';
 4623:     my $upload=&mt("Upload Scores");
 4624:     my $upfile_select=&Apache::loncommon::upfile_select_html();
 4625:     my $ignore=&mt('Ignore First Line');
 4626:     $symb = &Apache::lonenc::check_encrypt($symb);
 4627:     $result.=<<ENDUPFORM;
 4628: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 4629: <input type="hidden" name="symb" value="$symb" />
 4630: <input type="hidden" name="command" value="csvuploadmap" />
 4631: $upfile_select
 4632: <br /><input type="button" onclick="javascript:checkUpload(this.form);" value="$upload" />
 4633: </form>
 4634: ENDUPFORM
 4635:     $result.=&Apache::loncommon::help_open_topic("Course_Convert_To_CSV",
 4636:                            &mt("How do I create a CSV file from a spreadsheet")).
 4637:              '</td>'.
 4638:             &Apache::loncommon::end_data_table_row().
 4639:             &Apache::loncommon::end_data_table();
 4640:     return $result;
 4641: }
 4642: 
 4643: 
 4644: sub csvuploadmap {
 4645:     my ($request,$symb)= @_;
 4646:     if (!$symb) {return '';}
 4647: 
 4648:     my $datatoken;
 4649:     if (!$env{'form.datatoken'}) {
 4650: 	$datatoken=&Apache::loncommon::upfile_store($request);
 4651:     } else {
 4652: 	$datatoken=&Apache::loncommon::valid_datatoken($env{'form.datatoken'});
 4653:         if ($datatoken ne '') {
 4654: 	    &Apache::loncommon::load_tmp_file($request,$datatoken);
 4655:         }
 4656:     }
 4657:     my @records=&Apache::loncommon::upfile_record_sep();
 4658:     &csvuploadmap_header($request,$symb,$datatoken,$#records+1);
 4659:     my ($i,$keyfields);
 4660:     if (@records) {
 4661:         my $fieldserror;
 4662: 	my @fields=&csvupload_fields($symb,\$fieldserror);
 4663:         if ($fieldserror) {
 4664:             $request->print(&navmap_errormsg());
 4665:             return;
 4666:         }
 4667: 	if ($env{'form.upfile_associate'} eq 'reverse') {	
 4668: 	    &Apache::loncommon::csv_print_samples($request,\@records);
 4669: 	    $i=&Apache::loncommon::csv_print_select_table($request,\@records,
 4670: 							  \@fields);
 4671: 	    foreach (@fields) { $keyfields.=$_->[0].','; }
 4672: 	    chop($keyfields);
 4673: 	} else {
 4674: 	    unshift(@fields,['none','']);
 4675: 	    $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
 4676: 							    \@fields);
 4677:             foreach my $rec (@records) {
 4678:                 my %temp = &Apache::loncommon::record_sep($rec);
 4679:                 if (%temp) {
 4680:                     $keyfields=join(',',sort(keys(%temp)));
 4681:                     last;
 4682:                 }
 4683:             }
 4684: 	}
 4685:     }
 4686:     &csvuploadmap_footer($request,$i,$keyfields);
 4687: 
 4688:     return '';
 4689: }
 4690: 
 4691: sub csvuploadoptions {
 4692:     my ($request,$symb)= @_;
 4693:     my $overwrite=&mt('Overwrite any existing score');
 4694:     $request->print(<<ENDPICK);
 4695: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 4696: <input type="hidden" name="command"    value="csvuploadassign" />
 4697: <p>
 4698: <label>
 4699:    <input type="checkbox" name="overwite_scores" checked="checked" />
 4700:    $overwrite
 4701: </label>
 4702: </p>
 4703: ENDPICK
 4704:     my %fields=&get_fields();
 4705:     if (!defined($fields{'domain'})) {
 4706: 	my $domform = &Apache::loncommon::select_dom_form($env{'request.role.domain'},'default_domain');
 4707: 	$request->print("\n<p>".&mt('Users are in domain: [_1]',$domform)."</p>\n");
 4708:     }
 4709:     foreach my $key (sort(keys(%env))) {
 4710: 	if ($key !~ /^form\.(.*)$/) { next; }
 4711: 	my $cleankey=$1;
 4712: 	if ($cleankey eq 'command') { next; }
 4713: 	$request->print('<input type="hidden" name="'.$cleankey.
 4714: 			'"  value="'.$env{$key}.'" />'."\n");
 4715:     }
 4716:     # FIXME do a check for any duplicated user ids...
 4717:     # FIXME do a check for any invalid user ids?...
 4718:     $request->print('<input type="submit" value="'.&mt('Assign Grades').'" /><br />
 4719: <hr /></form>'."\n");
 4720:     return '';
 4721: }
 4722: 
 4723: sub get_fields {
 4724:     my %fields;
 4725:     my @keyfields = split(/\,/,$env{'form.keyfields'});
 4726:     for (my $i=0; $i<=$env{'form.nfields'}; $i++) {
 4727: 	if ($env{'form.upfile_associate'} eq 'reverse') {
 4728: 	    if ($env{'form.f'.$i} ne 'none') {
 4729: 		$fields{$keyfields[$i]}=$env{'form.f'.$i};
 4730: 	    }
 4731: 	} else {
 4732: 	    if ($env{'form.f'.$i} ne 'none') {
 4733: 		$fields{$env{'form.f'.$i}}=$keyfields[$i];
 4734: 	    }
 4735: 	}
 4736:     }
 4737:     return %fields;
 4738: }
 4739: 
 4740: sub csvuploadassign {
 4741:     my ($request,$symb)= @_;
 4742:     if (!$symb) {return '';}
 4743:     my $error_msg = '';
 4744:     my $datatoken = &Apache::loncommon::valid_datatoken($env{'form.datatoken'});
 4745:     if ($datatoken ne '') { 
 4746:         &Apache::loncommon::load_tmp_file($request,$datatoken);
 4747:     }
 4748:     my @gradedata = &Apache::loncommon::upfile_record_sep();
 4749:     my %fields=&get_fields();
 4750:     my $courseid=$env{'request.course.id'};
 4751:     my ($classlist) = &getclasslist('all',0);
 4752:     my @notallowed;
 4753:     my @skipped;
 4754:     my @warnings;
 4755:     my $countdone=0;
 4756:     foreach my $grade (@gradedata) {
 4757: 	my %entries=&Apache::loncommon::record_sep($grade);
 4758: 	my $domain;
 4759: 	if ($entries{$fields{'domain'}}) {
 4760: 	    $domain=$entries{$fields{'domain'}};
 4761: 	} else {
 4762: 	    $domain=$env{'form.default_domain'};
 4763: 	}
 4764: 	$domain=~s/\s//g;
 4765: 	my $username=$entries{$fields{'username'}};
 4766: 	$username=~s/\s//g;
 4767: 	if (!$username) {
 4768: 	    my $id=$entries{$fields{'ID'}};
 4769: 	    $id=~s/\s//g;
 4770:             if ($id ne '') {
 4771: 	        my %ids=&Apache::lonnet::idget($domain,[$id]);
 4772: 	        $username=$ids{$id};
 4773:             } else {
 4774:                 if ($entries{$fields{'clicker'}}) {
 4775:                     my $clicker = $entries{$fields{'clicker'}};
 4776:                     $clicker=~s/\s//g;
 4777:                     if ($clicker ne '') {
 4778:                         my %clickers = &Apache::lonnet::idget($domain,[$clicker],'clickers');
 4779:                         if ($clickers{$clicker} ne '') {  
 4780:                             my $match = 0;
 4781:                             my @inclass;
 4782:                             foreach my $poss (split(/,/,$clickers{$clicker})) {
 4783:                                 if (exists($$classlist{"$poss:$domain"})) {
 4784:                                     $username = $poss;
 4785:                                     push(@inclass,$poss);
 4786:                                     $match ++;
 4787:                                     
 4788:                                 }
 4789:                             }
 4790:                             if ($match > 1) {
 4791:                                 undef($username); 
 4792:                                 $request->print('<p class="LC_warning">'.
 4793:                                                 &mt('Score not saved for clicker: [_1] (matched multiple usernames: [_2])',
 4794:                                                 $clicker,join(', ',@inclass)).'</p>');
 4795:                             }
 4796:                         }
 4797:                     }
 4798:                 }
 4799:             }
 4800: 	}
 4801: 	if (!exists($$classlist{"$username:$domain"})) {
 4802: 	    my $id=$entries{$fields{'ID'}};
 4803: 	    $id=~s/\s//g;
 4804:             my $clicker = $entries{$fields{'clicker'}};
 4805:             $clicker=~s/\s//g;
 4806:             if ($clicker) {
 4807:                 push(@skipped,"$clicker:$domain");
 4808: 	    } elsif ($id) {
 4809: 		push(@skipped,"$id:$domain");
 4810: 	    } else {
 4811: 		push(@skipped,"$username:$domain");
 4812: 	    }
 4813: 	    next;
 4814: 	}
 4815: 	my $usec=$classlist->{"$username:$domain"}[5];
 4816: 	if (!&canmodify($usec)) {
 4817: 	    push(@notallowed,"$username:$domain");
 4818: 	    next;
 4819: 	}
 4820: 	my %points;
 4821: 	my %grades;
 4822: 	foreach my $dest (keys(%fields)) {
 4823: 	    if ($dest eq 'ID' || $dest eq 'username' ||
 4824: 		$dest eq 'domain') { next; }
 4825: 	    if ($entries{$fields{$dest}} =~ /^\s*$/) { next; }
 4826: 	    if ($dest=~/stores_(.*)_points/) {
 4827: 		my $part=$1;
 4828: 		my $wgt =&Apache::lonnet::EXT('resource.'.$part.'.weight',
 4829: 					      $symb,$domain,$username);
 4830:                 if ($wgt) {
 4831:                     $entries{$fields{$dest}}=~s/\s//g;
 4832:                     my $pcr=$entries{$fields{$dest}} / $wgt;
 4833:                     my $award=($pcr == 0) ? 'incorrect_by_override'
 4834:                                           : 'correct_by_override';
 4835:                     if ($pcr>1) {
 4836:                        push(@warnings,&mt("[_1]: point value larger than weight","$username:$domain"));
 4837:                     }
 4838:                     $grades{"resource.$part.awarded"}=$pcr;
 4839:                     $grades{"resource.$part.solved"}=$award;
 4840:                     $points{$part}=1;
 4841:                 } else {
 4842:                     $error_msg = "<br />" .
 4843:                         &mt("Some point values were assigned"
 4844:                             ." for problems with a weight "
 4845:                             ."of zero. These values were "
 4846:                             ."ignored.");
 4847:                 }
 4848: 	    } else {
 4849: 		if ($dest=~/stores_(.*)_awarded/) { if ($points{$1}) {next;} }
 4850: 		if ($dest=~/stores_(.*)_solved/)  { if ($points{$1}) {next;} }
 4851: 		my $store_key=$dest;
 4852: 		$store_key=~s/^stores/resource/;
 4853: 		$store_key=~s/_/\./g;
 4854: 		$grades{$store_key}=$entries{$fields{$dest}};
 4855: 	    }
 4856: 	}
 4857: 	if (! %grades) { 
 4858:            push(@skipped,&mt("[_1]: no data to save","$username:$domain")); 
 4859:         } else {
 4860: 	   $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
 4861: 	   my $result=&Apache::lonnet::cstore(\%grades,$symb,
 4862: 					   $env{'request.course.id'},
 4863: 					   $domain,$username);
 4864: 	   if ($result eq 'ok') {
 4865: # Successfully stored
 4866: 	      $request->print('.');
 4867: # Remove from grading queue
 4868:               &Apache::bridgetask::remove_from_queue('gradingqueue',$symb,
 4869:                                              $env{'course.'.$env{'request.course.id'}.'.domain'},
 4870:                                              $env{'course.'.$env{'request.course.id'}.'.num'},
 4871:                                              $domain,$username);
 4872:               $countdone++;
 4873:            } else {
 4874: 	      $request->print("<p><span class=\"LC_error\">".
 4875:                               &mt("Failed to save data for student [_1]. Message when trying to save was: [_2]",
 4876:                                   "$username:$domain",$result)."</span></p>");
 4877: 	   }
 4878: 	   $request->rflush();
 4879:         }
 4880:     }
 4881:     $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt("Saved scores for [quant,_1,student]",$countdone),$countdone==0));
 4882:     if (@warnings) {
 4883:         $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('Warnings generated for the following saved scores:'),1).'<br />');
 4884:         $request->print(join(', ',@warnings));
 4885:     }
 4886:     if (@skipped) {
 4887: 	$request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('No scores stored for the following username(s):'),1).'<br />');
 4888:         $request->print(join(', ',@skipped));
 4889:     }
 4890:     if (@notallowed) {
 4891: 	$request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('Modification of scores not allowed for the following username(s):'),1).'<br />');
 4892: 	$request->print(join(', ',@notallowed));
 4893:     }
 4894:     $request->print("<br />\n");
 4895:     return $error_msg;
 4896: }
 4897: #------------- end of section for handling csv file upload ---------
 4898: #
 4899: #-------------------------------------------------------------------
 4900: #
 4901: #-------------- Next few routines handle grading by page/sequence
 4902: #
 4903: #--- Select a page/sequence and a student to grade
 4904: sub pickStudentPage {
 4905:     my ($request,$symb) = @_;
 4906: 
 4907:     my $alertmsg = &mt('Please select the student you wish to grade.');
 4908:     &js_escape(\$alertmsg);
 4909:     $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
 4910: 
 4911: function checkPickOne(formname) {
 4912:     if (radioSelection(formname.student) == null) {
 4913: 	alert("$alertmsg");
 4914: 	return;
 4915:     }
 4916:     ptr = pullDownSelection(formname.selectpage);
 4917:     formname.page.value = formname["page"+ptr].value;
 4918:     formname.title.value = formname["title"+ptr].value;
 4919:     formname.submit();
 4920: }
 4921: 
 4922: LISTJAVASCRIPT
 4923:     &commonJSfunctions($request);
 4924: 
 4925:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 4926:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 4927:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 4928:     my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
 4929: 
 4930:     my $result='<h3><span class="LC_info">&nbsp;'.
 4931: 	&mt('Manual Grading by Page or Sequence').'</span></h3>';
 4932: 
 4933:     $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
 4934:     my $map_error;
 4935:     my ($titles,$symbx) = &getSymbMap($map_error);
 4936:     if ($map_error) {
 4937:         $request->print(&navmap_errormsg());
 4938:         return; 
 4939:     }
 4940:     my ($curpage) =&Apache::lonnet::decode_symb($symb); 
 4941: #    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
 4942: #    my $type=($curpage =~ /\.(page|sequence)/);
 4943: 
 4944:     # Collection of hidden fields
 4945:     my $ctr=0;
 4946:     foreach (@$titles) {
 4947:         my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 4948:         $result.='<input type="hidden" name="page'.$ctr.'" value="'.$$symbx{$_}.'" />'."\n";
 4949:         $result.='<input type="hidden" name="title'.$ctr.'" value="'.$showtitle.'" />'."\n";
 4950:         $ctr++;
 4951:     }
 4952:     $result.='<input type="hidden" name="page" />'."\n".
 4953:         '<input type="hidden" name="title" />'."\n";
 4954: 
 4955:     $result.=&build_section_inputs();
 4956:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 4957:     $result.='<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
 4958: 	'<input type="hidden" name="command" value="displayPage" />'."\n".
 4959: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 4960: 
 4961:     # Show grading options
 4962:     $result.=&Apache::lonhtmlcommon::start_pick_box();
 4963:     my $select = '<select name="selectpage">'."\n";
 4964:     $ctr=0;
 4965:     foreach (@$titles) {
 4966: 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 4967: 	$select.='<option value="'.$ctr.'"'.
 4968: 	    ($$symbx{$_} =~ /$curpage$/ ? ' selected="selected"' : '').
 4969: 	    '>'.$showtitle.'</option>'."\n";
 4970: 	$ctr++;
 4971:     }
 4972:     $select.= '</select>';
 4973: 
 4974:     $result.=
 4975:         &Apache::lonhtmlcommon::row_title(&mt('Problems from'))
 4976:        .$select
 4977:        .&Apache::lonhtmlcommon::row_closure();
 4978: 
 4979:     $result.=
 4980:         &Apache::lonhtmlcommon::row_title(&mt('View Problem Text'))
 4981:        .'<label><input type="radio" name="vProb" value="no"'
 4982:            .' checked="checked" /> '.&mt('no').' </label>'."\n"
 4983:        .'<label><input type="radio" name="vProb" value="yes" />'
 4984:            .&mt('yes').'</label>'."\n"
 4985:        .&Apache::lonhtmlcommon::row_closure();
 4986: 
 4987:     $result.=
 4988:         &Apache::lonhtmlcommon::row_title(&mt('View Submissions'))
 4989:        .'<label><input type="radio" name="lastSub" value="none" /> '
 4990:            .&mt('none').' </label>'."\n"
 4991:        .'<label><input type="radio" name="lastSub" value="datesub"'
 4992:            .' checked="checked" /> '.&mt('all submissions').'</label>'."\n"
 4993:        .'<label><input type="radio" name="lastSub" value="all" /> '
 4994:            .&mt('all submissions with details').' </label>'
 4995:        .&Apache::lonhtmlcommon::row_closure();
 4996:     
 4997:     $result.=
 4998:         &Apache::lonhtmlcommon::row_title(&mt('Use CODE'))
 4999:        .'<input type="text" name="CODE" value="" />'
 5000:        .&Apache::lonhtmlcommon::row_closure(1)
 5001:        .&Apache::lonhtmlcommon::end_pick_box();
 5002: 
 5003:     # Show list of students to select for grading
 5004:     $result.='<br /><input type="button" '.
 5005:              'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /><br />'."\n";
 5006: 
 5007:     $request->print($result);
 5008: 
 5009:     my $studentTable.='&nbsp;<b>'.&mt('Select a student you wish to grade and then click on the Next button.').'</b><br />'.
 5010: 	&Apache::loncommon::start_data_table().
 5011: 	&Apache::loncommon::start_data_table_header_row().
 5012: 	'<th align="right">&nbsp;'.&mt('No.').'</th>'.
 5013: 	'<th>'.&nameUserString('header').'</th>'.
 5014: 	'<th align="right">&nbsp;'.&mt('No.').'</th>'.
 5015: 	'<th>'.&nameUserString('header').'</th>'.
 5016: 	&Apache::loncommon::end_data_table_header_row();
 5017:  
 5018:     my (undef,undef,$fullname) = &getclasslist($getsec,'1',$getgroup);
 5019:     my $ptr = 1;
 5020:     foreach my $student (sort 
 5021: 			 {
 5022: 			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 5023: 				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 5024: 			     }
 5025: 			     return $a cmp $b;
 5026: 			 } (keys(%$fullname))) {
 5027: 	my ($uname,$udom) = split(/:/,$student);
 5028: 	$studentTable.=($ptr%2==1 ? &Apache::loncommon::start_data_table_row()
 5029:                                   : '</td>');
 5030: 	$studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
 5031: 	$studentTable.='<td>&nbsp;<label><input type="radio" name="student" value="'.$student.'" /> '
 5032: 	    .&nameUserString(undef,$$fullname{$student},$uname,$udom)."</label>\n";
 5033: 	$studentTable.=
 5034: 	    ($ptr%2 == 0 ? '</td>'.&Apache::loncommon::end_data_table_row() 
 5035:                          : '');
 5036: 	$ptr++;
 5037:     }
 5038:     if ($ptr%2 == 0) {
 5039: 	$studentTable.='</td><td>&nbsp;</td><td>&nbsp;</td>'.
 5040: 	    &Apache::loncommon::end_data_table_row();
 5041:     }
 5042:     $studentTable.=&Apache::loncommon::end_data_table()."\n";
 5043:     $studentTable.='<input type="button" '.
 5044:                    'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /></form>'."\n";
 5045: 
 5046:     $request->print($studentTable);
 5047: 
 5048:     return '';
 5049: }
 5050: 
 5051: sub getSymbMap {
 5052:     my ($map_error) = @_;
 5053:     my $navmap = Apache::lonnavmaps::navmap->new();
 5054:     unless (ref($navmap)) {
 5055:         if (ref($map_error)) {
 5056:             $$map_error = 'navmap';
 5057:         }
 5058:         return;
 5059:     }
 5060:     my %symbx = ();
 5061:     my @titles = ();
 5062:     my $minder = 0;
 5063: 
 5064:     # Gather every sequence that has problems.
 5065:     my @sequences = $navmap->retrieveResources(undef, sub { shift->is_map(); },
 5066: 					       1,0,1);
 5067:     for my $sequence ($navmap->getById('0.0'), @sequences) {
 5068: 	if ($navmap->hasResource($sequence, sub { shift->is_gradable(); }, 0) ) {
 5069: 	    my $title = $minder.'.'.
 5070: 		&HTML::Entities::encode($sequence->compTitle(),'"\'&');
 5071: 	    push(@titles, $title); # minder in case two titles are identical
 5072: 	    $symbx{$title} = &HTML::Entities::encode($sequence->symb(),'"\'&');
 5073: 	    $minder++;
 5074: 	}
 5075:     }
 5076:     return \@titles,\%symbx;
 5077: }
 5078: 
 5079: #
 5080: #--- Displays a page/sequence w/wo problems, w/wo submissions
 5081: sub displayPage {
 5082:     my ($request,$symb) = @_;
 5083:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 5084:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 5085:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 5086:     my $pageTitle = $env{'form.page'};
 5087:     my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
 5088:     my ($uname,$udom) = split(/:/,$env{'form.student'});
 5089:     my $usec=$classlist->{$env{'form.student'}}[5];
 5090: 
 5091:     #need to make sure we have the correct data for later EXT calls, 
 5092:     #thus invalidate the cache
 5093:     &Apache::lonnet::devalidatecourseresdata(
 5094:                  $env{'course.'.$env{'request.course.id'}.'.num'},
 5095:                  $env{'course.'.$env{'request.course.id'}.'.domain'});
 5096:     &Apache::lonnet::clear_EXT_cache_status();
 5097: 
 5098:     if (!&canview($usec)) {
 5099:         $request->print(
 5100:             '<span class="LC_warning">'.
 5101:             &mt('Unable to view requested student. ([_1])',
 5102:                     $env{'form.student'}).
 5103:             '</span>');
 5104:         return;
 5105:     }
 5106:     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
 5107:     $result.='<h3>&nbsp;'.&mt('Student: [_1]',&nameUserString(undef,$$fullname{$env{'form.student'}},$uname,$udom)).
 5108: 	'</h3>'."\n";
 5109:     $env{'form.CODE'} = uc($env{'form.CODE'});
 5110:     if (&Apache::lonnet::validCODE(uc($env{'form.CODE'}))) {
 5111: 	$result.='<h3>&nbsp;'.&mt('CODE: [_1]',$env{'form.CODE'}).'</h3>'."\n";
 5112:     } else {
 5113: 	delete($env{'form.CODE'});
 5114:     }
 5115:     &sub_page_js($request);
 5116:     $request->print($result);
 5117: 
 5118:     my $navmap = Apache::lonnavmaps::navmap->new();
 5119:     unless (ref($navmap)) {
 5120:         $request->print(&navmap_errormsg());
 5121:         return;
 5122:     }
 5123:     my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($env{'form.page'});
 5124:     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 5125:     if (!$map) {
 5126: 	$request->print('<span class="LC_warning">'.&mt('Unable to view requested sequence. ([_1])',$resUrl).'</span>');
 5127: 	return; 
 5128:     }
 5129:     my $iterator = $navmap->getIterator($map->map_start(),
 5130: 					$map->map_finish());
 5131: 
 5132:     my $studentTable='<form action="/adm/grades" method="post" name="gradePage">'."\n".
 5133: 	'<input type="hidden" name="command" value="gradeByPage" />'."\n".
 5134: 	'<input type="hidden" name="fullname" value="'.$$fullname{$env{'form.student'}}.'" />'."\n".
 5135: 	'<input type="hidden" name="student" value="'.$env{'form.student'}.'" />'."\n".
 5136: 	'<input type="hidden" name="page"    value="'.$pageTitle.'" />'."\n".
 5137: 	'<input type="hidden" name="title"   value="'.$env{'form.title'}.'" />'."\n".
 5138: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 5139: 	'<input type="hidden" name="overRideScore" value="no" />'."\n";
 5140: 
 5141:     if (defined($env{'form.CODE'})) {
 5142: 	$studentTable.=
 5143: 	    '<input type="hidden" name="CODE" value="'.$env{'form.CODE'}.'" />'."\n";
 5144:     }
 5145:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 5146: 	'" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
 5147: 
 5148:     $studentTable.='&nbsp;<span class="LC_info">'.
 5149:         &mt('Problems graded correct by the computer are marked with a [_1] symbol.',$checkIcon).
 5150:         '</span>'."\n".
 5151: 	&Apache::loncommon::start_data_table().
 5152: 	&Apache::loncommon::start_data_table_header_row().
 5153: 	'<th>'.&mt('Prob.').'</th>'.
 5154: 	'<th>&nbsp;'.($env{'form.vProb'} eq 'no' ? &mt('Title') : &mt('Problem Text')).'/'.&mt('Grade').'</th>'.
 5155: 	&Apache::loncommon::end_data_table_header_row();
 5156: 
 5157:     &Apache::lonxml::clear_problem_counter();
 5158:     my ($depth,$question,$prob) = (1,1,1);
 5159:     $iterator->next(); # skip the first BEGIN_MAP
 5160:     my $curRes = $iterator->next(); # for "current resource"
 5161:     while ($depth > 0) {
 5162:         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
 5163:         if($curRes == $iterator->END_MAP) { $depth--; }
 5164: 
 5165:         if (ref($curRes) && $curRes->is_gradable()) {
 5166: 	    my $parts = $curRes->parts();
 5167:             my $title = $curRes->compTitle();
 5168: 	    my $symbx = $curRes->symb();
 5169:             my $is_tool = ($symbx =~ /ext\.tool$/);
 5170: 	    $studentTable.=
 5171: 		&Apache::loncommon::start_data_table_row().
 5172: 		'<td align="center" valign="top" >'.$prob.
 5173: 		(scalar(@{$parts}) == 1 ? '' 
 5174: 		                        : '<br />('.&mt('[_1]parts',
 5175: 							scalar(@{$parts}).'&nbsp;').')'
 5176: 		 ).
 5177: 		 '</td>';
 5178: 	    $studentTable.='<td valign="top">';
 5179: 	    my %form = ('CODE' => $env{'form.CODE'},);
 5180:             if ($is_tool) {
 5181:                 $studentTable.='&nbsp;<b>'.$title.'</b><br />';
 5182:             } else {
 5183: 	        if ($env{'form.vProb'} eq 'yes' ) {
 5184: 		    $studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
 5185: 					         undef,'both',\%form);
 5186: 	        } else {
 5187: 		    my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$env{'request.course.id'},%form);
 5188: 		    $companswer =~ s|<form(.*?)>||g;
 5189: 		    $companswer =~ s|</form>||g;
 5190: #		    while ($companswer =~ /(<a href\=\"javascript:newWindow.*?Script Vars<\/a>)/s) { #<a href="javascript:newWindow</a>
 5191: #		        $companswer =~ s/$1/ /ms;
 5192: #		        $request->print('match='.$1."<br />\n");
 5193: #		    }
 5194: #		    $companswer =~ s|<table border=\"1\">|<table border=\"0\">|g;
 5195: 		    $studentTable.='&nbsp;<b>'.$title.'</b>&nbsp;<br />&nbsp;<b>'.&mt('Correct answer').':</b><br />'.$companswer;
 5196: 		}
 5197: 	    }
 5198: 
 5199: 	    my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
 5200: 
 5201: 	    if ($env{'form.lastSub'} eq 'datesub') {
 5202: 		if ($record{'version'} eq '') {
 5203:                     my $msg = &mt('No recorded submission for this problem.');
 5204:                     if ($is_tool) {
 5205:                         $msg = &mt('No recorded transactions for this external tool');
 5206:                     }
 5207: 		    $studentTable.='<br />&nbsp;<span class="LC_warning">'.$msg.'</span><br />';
 5208: 		} else {
 5209: 		    my %responseType = ();
 5210: 		    foreach my $partid (@{$parts}) {
 5211: 			my @responseIds =$curRes->responseIds($partid);
 5212: 			my @responseType =$curRes->responseType($partid);
 5213: 			my %responseIds;
 5214: 			for (my $i=0;$i<=$#responseIds;$i++) {
 5215: 			    $responseIds{$responseIds[$i]}=$responseType[$i];
 5216: 			}
 5217: 			$responseType{$partid} = \%responseIds;
 5218: 		    }
 5219: 		    $studentTable.= &displaySubByDates($symbx,\%record,$parts,\%responseType,$checkIcon,$uname,$udom);
 5220: 		}
 5221: 	    } elsif ($env{'form.lastSub'} eq 'all') {
 5222: 		my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
 5223:                 my $identifier = (&canmodify($usec)? $prob : ''); 
 5224: 		$studentTable.=&Apache::loncommon::get_previous_attempt($symbx,$uname,$udom,
 5225: 									$env{'request.course.id'},
 5226: 									'','.submission',undef,
 5227:                                                                         $usec,$identifier);
 5228:  
 5229: 	    }
 5230: 	    if (&canmodify($usec)) {
 5231:             $studentTable.=&gradeBox_start();
 5232: 		foreach my $partid (@{$parts}) {
 5233: 		    $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
 5234: 		    $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
 5235: 		    $question++;
 5236: 		}
 5237:             $studentTable.=&gradeBox_end();
 5238: 		$prob++;
 5239: 	    }
 5240: 	    $studentTable.='</td></tr>';
 5241: 
 5242: 	}
 5243:         $curRes = $iterator->next();
 5244:     }
 5245: 
 5246:     $studentTable.=
 5247:         '</table>'."\n".
 5248:         '<input type="button" value="'.&mt('Save').'" '.
 5249:         'onclick="javascript:checkSubmitPage(this.form,'.$question.');" />'.
 5250:         '</form>'."\n";
 5251:     $request->print($studentTable);
 5252: 
 5253:     return '';
 5254: }
 5255: 
 5256: sub displaySubByDates {
 5257:     my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
 5258:     my $isCODE=0;
 5259:     my $isTask = ($symb =~/\.task$/);
 5260:     my $is_tool = ($symb =~/\.tool$/);
 5261:     if (exists($record->{'resource.CODE'})) { $isCODE=1; }
 5262:     my $studentTable=&Apache::loncommon::start_data_table().
 5263: 	&Apache::loncommon::start_data_table_header_row().
 5264: 	'<th>'.&mt('Date/Time').'</th>'.
 5265: 	($isCODE?'<th>'.&mt('CODE').'</th>':'').
 5266:         ($isTask?'<th>'.&mt('Version').'</th>':'').
 5267: 	'<th>'.($is_tool?&mt('Grade'):&mt('Submission')).'</th>'.
 5268: 	'<th>'.&mt('Status').'</th>'.
 5269: 	&Apache::loncommon::end_data_table_header_row();
 5270:     my ($version);
 5271:     my %mark;
 5272:     my %orders;
 5273:     $mark{'correct_by_student'} = $checkIcon;
 5274:     if (!exists($$record{'1:timestamp'})) {
 5275:         if ($is_tool) {
 5276:             return '<br />&nbsp;<span class="LC_warning">'.&mt('No grade passed back.').'</span><br />';
 5277:         } else {
 5278:             return '<br />&nbsp;<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br />';
 5279:         }
 5280:     }
 5281: 
 5282:     my $interaction;
 5283:     my $no_increment = 1;
 5284:     my (%lastrndseed,%lasttype);
 5285:     for ($version=1;$version<=$$record{'version'};$version++) {
 5286: 	my $timestamp = 
 5287: 	    &Apache::lonlocal::locallocaltime($$record{$version.':timestamp'});
 5288: 	if (exists($$record{$version.':resource.0.version'})) {
 5289: 	    $interaction = $$record{$version.':resource.0.version'};
 5290: 	}
 5291:         if ($isTask && $env{'form.previousversion'}) {
 5292:             next unless ($interaction == $env{'form.previousversion'});
 5293:         }
 5294: 	my $where = ($isTask ? "$version:resource.$interaction"
 5295: 		             : "$version:resource");
 5296: 	$studentTable.=&Apache::loncommon::start_data_table_row().
 5297: 	    '<td>'.$timestamp.'</td>';
 5298: 	if ($isCODE) {
 5299: 	    $studentTable.='<td>'.$record->{$version.':resource.CODE'}.'</td>';
 5300: 	}
 5301:         if ($isTask) {
 5302:             $studentTable.='<td>'.$interaction.'</td>';
 5303:         }
 5304: 	my @versionKeys = split(/\:/,$$record{$version.':keys'});
 5305: 	my @displaySub = ();
 5306: 	foreach my $partid (@{$parts}) {
 5307:             my ($hidden,$type);
 5308:             $type = $$record{$version.':resource.'.$partid.'.type'};
 5309:             if (($type eq 'anonsurvey') || ($type eq 'anonsurveycred')) {
 5310:                 $hidden = 1;
 5311:             }
 5312:             my @matchKey;
 5313:             if ($isTask) {
 5314:                 @matchKey = sort(grep /^resource\.\d+\.\Q$partid\E\.award$/,@versionKeys);
 5315:             } elsif ($is_tool) {
 5316:                 @matchKey = sort(grep /^resource\.\Q$partid\E\.awarded$/,@versionKeys);
 5317:             } else {
 5318:                 @matchKey = sort(grep /^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys);
 5319:             }
 5320: #	    next if ($$record{"$version:resource.$partid.solved"} eq '');
 5321: 	    my $display_part=&get_display_part($partid,$symb);
 5322: 	    foreach my $matchKey (@matchKey) {
 5323: 		if (exists($$record{$version.':'.$matchKey}) &&
 5324: 		    $$record{$version.':'.$matchKey} ne '') {
 5325:                     if ($is_tool) {
 5326:                         $displaySub[0].=$$record{"$version:resource.$partid.awarded"};
 5327:                     } else {
 5328: 		        my ($responseId)= ($isTask ? ($matchKey=~ /^resource\.(.*?)\.\Q$partid\E\.award$/)
 5329: 				                   : ($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/));
 5330:                         $displaySub[0].='<span class="LC_nobreak">';
 5331:                         $displaySub[0].='<b>'.&mt('Part: [_1]',$display_part).'</b>'
 5332:                                        .' <span class="LC_internal_info">'
 5333:                                        .'('.&mt('Response ID: [_1]',$responseId).')'
 5334:                                        .'</span>'
 5335:                                        .' <b>';
 5336:                         if ($hidden) {
 5337:                             $displaySub[0].= &mt('Anonymous Survey').'</b>';
 5338:                         } else {
 5339:                             my ($trial,$rndseed,$newvariation);
 5340:                             if ($type eq 'randomizetry') {
 5341:                                 $trial = $$record{"$where.$partid.tries"};
 5342:                                 $rndseed = $$record{"$where.$partid.rndseed"};
 5343:                             }
 5344: 		            if ($$record{"$where.$partid.tries"} eq '') {
 5345: 			        $displaySub[0].=&mt('Trial not counted');
 5346: 		            } else {
 5347: 			        $displaySub[0].=&mt('Trial: [_1]',
 5348: 					        $$record{"$where.$partid.tries"});
 5349:                                 if (($rndseed ne '') && ($lastrndseed{$partid} ne '')) {
 5350:                                     if (($rndseed ne $lastrndseed{$partid}) &&
 5351:                                         (($type eq 'randomizetry') || ($lasttype{$partid} eq 'randomizetry'))) {
 5352:                                         $newvariation = '&nbsp;('.&mt('New variation this try').')';
 5353:                                     }
 5354:                                 }
 5355:                                 $lastrndseed{$partid} = $rndseed;
 5356:                                 $lasttype{$partid} = $type;
 5357: 		            }
 5358: 		            my $responseType=($isTask ? 'Task'
 5359:                                               : $responseType->{$partid}->{$responseId});
 5360: 		            if (!exists($orders{$partid})) { $orders{$partid}={}; }
 5361: 		            if ((!exists($orders{$partid}->{$responseId})) || ($trial)) {
 5362: 			        $orders{$partid}->{$responseId}=
 5363: 			            &get_order($partid,$responseId,$symb,$uname,$udom,
 5364:                                                $no_increment,$type,$trial,$rndseed);
 5365: 		            }
 5366: 		            $displaySub[0].='</b>'.$newvariation.'</span>'; # /nobreak
 5367: 		            $displaySub[0].='&nbsp; '.
 5368: 			        &cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom,$type,$trial,$rndseed).'<br />';
 5369:                         }
 5370:                     }
 5371: 		}
 5372: 	    }
 5373: 	    if (exists($$record{"$where.$partid.checkedin"})) {
 5374: 		$displaySub[1].=&mt('Checked in by [_1] into slot [_2]',
 5375: 				    $$record{"$where.$partid.checkedin"},
 5376: 				    $$record{"$where.$partid.checkedin.slot"}).
 5377: 					'<br />';
 5378: 	    }
 5379: 	    if (exists $$record{"$where.$partid.award"}) {
 5380: 		$displaySub[1].='<b>'.&mt('Part:').'</b>&nbsp;'.$display_part.' &nbsp;'.
 5381: 		    lc($$record{"$where.$partid.award"}).' '.
 5382: 		    $mark{$$record{"$where.$partid.solved"}}.
 5383: 		    '<br />';
 5384: 	    } elsif (($is_tool) && (exists($$record{"$version:resource.$partid.solved"}))) {
 5385: 		if ($$record{"$version:resource.$partid.solved"} =~ /^(in|)correct_by_passback$/) {
 5386: 		    $displaySub[1].=&mt('Grade passed back by external tool');
 5387: 		}
 5388: 	    }
 5389: 	    if (exists $$record{"$where.$partid.regrader"}) {
 5390: 		$displaySub[2].=$$record{"$where.$partid.regrader"};
 5391: 		unless ($is_tool) {
 5392: 		    $displaySub[2].=' (<b>'.&mt('Part').':</b> '.$display_part.')';
 5393: 		}
 5394: 	    } elsif ($$record{"$version:resource.$partid.regrader"} =~ /\S/) {
 5395: 		$displaySub[2].=
 5396: 		    $$record{"$version:resource.$partid.regrader"};
 5397:                 unless ($is_tool) {
 5398: 		    $displaySub[2].=' (<b>'.&mt('Part').':</b> '.$display_part.')';
 5399:                 }
 5400: 	    }
 5401: 	}
 5402: 	# needed because old essay regrader has not parts info
 5403: 	if (exists $$record{"$version:resource.regrader"}) {
 5404: 	    $displaySub[2].=$$record{"$version:resource.regrader"};
 5405: 	}
 5406: 	$studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1];
 5407: 	if ($displaySub[2]) {
 5408: 	    $studentTable.=&mt('Manually graded by [_1]',$displaySub[2]);
 5409: 	}
 5410: 	$studentTable.='&nbsp;</td>'.
 5411: 	    &Apache::loncommon::end_data_table_row();
 5412:     }
 5413:     $studentTable.=&Apache::loncommon::end_data_table();
 5414:     return $studentTable;
 5415: }
 5416: 
 5417: sub updateGradeByPage {
 5418:     my ($request,$symb) = @_;
 5419: 
 5420:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 5421:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 5422:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 5423:     my $pageTitle = $env{'form.page'};
 5424:     my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
 5425:     my ($uname,$udom) = split(/:/,$env{'form.student'});
 5426:     my $usec=$classlist->{$env{'form.student'}}[5];
 5427:     if (!&canmodify($usec)) {
 5428: 	$request->print('<span class="LC_warning">'.&mt('Unable to modify requested student ([_1])',$env{'form.student'}).'</span>');
 5429: 	return;
 5430:     }
 5431:     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
 5432:     $result.='<h3>&nbsp;'.&mt('Student: ').&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
 5433: 	'</h3>'."\n";
 5434: 
 5435:     $request->print($result);
 5436: 
 5437: 
 5438:     my $navmap = Apache::lonnavmaps::navmap->new();
 5439:     unless (ref($navmap)) {
 5440:         $request->print(&navmap_errormsg());
 5441:         return;
 5442:     }
 5443:     my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $env{'form.page'});
 5444:     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 5445:     if (!$map) {
 5446: 	$request->print('<span class="LC_warning">'.&mt('Unable to grade requested sequence ([_1]).',$resUrl).'</span>');
 5447: 	return; 
 5448:     }
 5449:     my $iterator = $navmap->getIterator($map->map_start(),
 5450: 					$map->map_finish());
 5451: 
 5452:     my $studentTable=
 5453: 	&Apache::loncommon::start_data_table().
 5454: 	&Apache::loncommon::start_data_table_header_row().
 5455: 	'<th align="center">&nbsp;'.&mt('Prob.').'&nbsp;</th>'.
 5456: 	'<th>&nbsp;'.&mt('Title').'&nbsp;</th>'.
 5457: 	'<th>&nbsp;'.&mt('Previous Score').'&nbsp;</th>'.
 5458: 	'<th>&nbsp;'.&mt('New Score').'&nbsp;</th>'.
 5459: 	&Apache::loncommon::end_data_table_header_row();
 5460: 
 5461:     $iterator->next(); # skip the first BEGIN_MAP
 5462:     my $curRes = $iterator->next(); # for "current resource"
 5463:     my ($depth,$question,$prob,$changeflag,$hideflag)= (1,1,1,0,0);
 5464:     while ($depth > 0) {
 5465:         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
 5466:         if($curRes == $iterator->END_MAP) { $depth--; }
 5467: 
 5468:         if (ref($curRes) && $curRes->is_problem()) {
 5469: 	    my $parts = $curRes->parts();
 5470:             my $title = $curRes->compTitle();
 5471: 	    my $symbx = $curRes->symb();
 5472: 	    $studentTable.=
 5473: 		&Apache::loncommon::start_data_table_row().
 5474: 		'<td align="center" valign="top" >'.$prob.
 5475: 		(scalar(@{$parts}) == 1 ? '' 
 5476:                                         : '<br />('.&mt('[quant,_1,part]',scalar(@{$parts}))
 5477: 		.')').'</td>';
 5478: 	    $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
 5479: 
 5480: 	    my %newrecord=();
 5481: 	    my @displayPts=();
 5482:             my %aggregate = ();
 5483:             my $aggregateflag = 0;
 5484:             if ($env{'form.HIDE'.$prob}) {
 5485:                 my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
 5486:                 my ($version,$parts) = split(/:/,$env{'form.HIDE'.$prob},2);
 5487:                 my $numchgs = &makehidden($version,$parts,\%record,$symbx,$udom,$uname,1);
 5488:                 $hideflag += $numchgs;
 5489:             }
 5490: 	    foreach my $partid (@{$parts}) {
 5491: 		my $newpts = $env{'form.GD_BOX'.$question.'_'.$partid};
 5492: 		my $oldpts = $env{'form.oldpts'.$question.'_'.$partid};
 5493: 
 5494: 		my $wgt = $env{'form.WGT'.$question.'_'.$partid} != 0 ? 
 5495: 		    $env{'form.WGT'.$question.'_'.$partid} : 1;
 5496: 		my $partial = $newpts/$wgt;
 5497: 		my $score;
 5498: 		if ($partial > 0) {
 5499: 		    $score = 'correct_by_override';
 5500: 		} elsif ($newpts ne '') { #empty is taken as 0
 5501: 		    $score = 'incorrect_by_override';
 5502: 		}
 5503: 		my $dropMenu = $env{'form.GD_SEL'.$question.'_'.$partid};
 5504: 		if ($dropMenu eq 'excused') {
 5505: 		    $partial = '';
 5506: 		    $score = 'excused';
 5507: 		} elsif ($dropMenu eq 'reset status'
 5508: 			 && $env{'form.solved'.$question.'_'.$partid} ne '') { #update only if previous record exists
 5509: 		    $newrecord{'resource.'.$partid.'.tries'} = 0;
 5510: 		    $newrecord{'resource.'.$partid.'.solved'} = '';
 5511: 		    $newrecord{'resource.'.$partid.'.award'} = '';
 5512: 		    $newrecord{'resource.'.$partid.'.awarded'} = 0;
 5513: 		    $newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}";
 5514: 		    $changeflag++;
 5515: 		    $newpts = '';
 5516:                     
 5517:                     my $aggtries =  $env{'form.aggtries'.$question.'_'.$partid};
 5518:                     my $totaltries = $env{'form.totaltries'.$question.'_'.$partid};
 5519:                     my $solvedstatus = $env{'form.solved'.$question.'_'.$partid};
 5520:                     if ($aggtries > 0) {
 5521:                         &decrement_aggs($symbx,$partid,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 5522:                         $aggregateflag = 1;
 5523:                     }
 5524: 		}
 5525: 		my $display_part=&get_display_part($partid,$curRes->symb());
 5526: 		my $oldstatus = $env{'form.solved'.$question.'_'.$partid};
 5527: 		$displayPts[0].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 5528: 		    (($oldstatus eq 'excused') ? 'excused' : $oldpts).
 5529: 		    '&nbsp;<br />';
 5530: 		$displayPts[1].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 5531: 		     (($score eq 'excused') ? 'excused' : $newpts).
 5532: 		    '&nbsp;<br />';
 5533: 		$question++;
 5534: 		next if ($dropMenu eq 'reset status' || ($newpts eq $oldpts && $score ne 'excused'));
 5535: 
 5536: 		$newrecord{'resource.'.$partid.'.awarded'}  = $partial if $partial ne '';
 5537: 		$newrecord{'resource.'.$partid.'.solved'}   = $score if $score ne '';
 5538: 		$newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}"
 5539: 		    if (scalar(keys(%newrecord)) > 0);
 5540: 
 5541: 		$changeflag++;
 5542: 	    }
 5543: 	    if (scalar(keys(%newrecord)) > 0) {
 5544: 		my %record = 
 5545: 		    &Apache::lonnet::restore($symbx,$env{'request.course.id'},
 5546: 					     $udom,$uname);
 5547: 
 5548: 		if (&Apache::lonnet::validCODE($env{'form.CODE'})) {
 5549: 		    $newrecord{'resource.CODE'} = $env{'form.CODE'};
 5550: 		} elsif (&Apache::lonnet::validCODE($record{'resource.CODE'})) {
 5551: 		    $newrecord{'resource.CODE'} = '';
 5552: 		}
 5553: 		&Apache::lonnet::cstore(\%newrecord,$symbx,$env{'request.course.id'},
 5554: 					$udom,$uname);
 5555: 		%record = &Apache::lonnet::restore($symbx,
 5556: 						   $env{'request.course.id'},
 5557: 						   $udom,$uname);
 5558: 		&check_and_remove_from_queue($parts,\%record,undef,$symbx,
 5559: 					     $cdom,$cnum,$udom,$uname);
 5560: 	    }
 5561: 	    
 5562:             if ($aggregateflag) {
 5563:                 &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 5564:                       $env{'course.'.$env{'request.course.id'}.'.domain'},
 5565:                       $env{'course.'.$env{'request.course.id'}.'.num'});
 5566:             }
 5567: 
 5568: 	    $studentTable.='<td valign="top">'.$displayPts[0].'</td>'.
 5569: 		'<td valign="top">'.$displayPts[1].'</td>'.
 5570: 		&Apache::loncommon::end_data_table_row();
 5571: 
 5572: 	    $prob++;
 5573: 	}
 5574:         $curRes = $iterator->next();
 5575:     }
 5576: 
 5577:     $studentTable.=&Apache::loncommon::end_data_table();
 5578:     my $grademsg=($changeflag == 0 ? &mt('No score was changed or updated.') :
 5579: 		  &mt('The scores were changed for [quant,_1,problem].',
 5580: 		  $changeflag).'<br />');
 5581:     my $hidemsg=($hideflag == 0 ? '' :
 5582:                  &mt('Submissions were marked "hidden" for [quant,_1,transaction].',
 5583:                      $hideflag).'<br />');
 5584:     $request->print($hidemsg.$grademsg.$studentTable);
 5585: 
 5586:     return '';
 5587: }
 5588: 
 5589: #-------- end of section for handling grading by page/sequence ---------
 5590: #
 5591: #-------------------------------------------------------------------
 5592: 
 5593: #-------------------- Bubblesheet (Scantron) Grading -------------------
 5594: #
 5595: #------ start of section for handling grading by page/sequence ---------
 5596: 
 5597: =pod
 5598: 
 5599: =head1 Bubble sheet grading routines
 5600: 
 5601:   For this documentation:
 5602: 
 5603:    'scanline' refers to the full line of characters
 5604:    from the file that we are parsing that represents one entire sheet
 5605: 
 5606:    'bubble line' refers to the data
 5607:    representing the line of bubbles that are on the physical bubblesheet
 5608: 
 5609: 
 5610: The overall process is that a scanned in bubblesheet data is uploaded
 5611: into a course. When a user wants to grade, they select a
 5612: sequence/folder of resources, a file of bubblesheet info, and pick
 5613: one of the predefined configurations for what each scanline looks
 5614: like.
 5615: 
 5616: Next each scanline is checked for any errors of either 'missing
 5617: bubbles' (it's an error because it may have been mis-scanned
 5618: because too light bubbling), 'double bubble' (each bubble line should
 5619: have no more than one letter picked), invalid or duplicated CODE,
 5620: invalid student/employee ID
 5621: 
 5622: If the CODE option is used that determines the randomization of the
 5623: homework problems, either way the student/employee ID is looked up into a
 5624: username:domain.
 5625: 
 5626: During the validation phase the instructor can choose to skip scanlines. 
 5627: 
 5628: After the validation phase, there are now 3 bubblesheet files
 5629: 
 5630:   scantron_original_filename (unmodified original file)
 5631:   scantron_corrected_filename (file where the corrected information has replaced the original information)
 5632:   scantron_skipped_filename (contains the exact text of scanlines that where skipped)
 5633: 
 5634: Also there is a separate hash nohist_scantrondata that contains extra
 5635: correction information that isn't representable in the bubblesheet
 5636: file (see &scantron_getfile() for more information)
 5637: 
 5638: After all scanlines are either valid, marked as valid or skipped, then
 5639: foreach line foreach problem in the picked sequence, an ssi request is
 5640: made that simulates a user submitting their selected letter(s) against
 5641: the homework problem.
 5642: 
 5643: =over 4
 5644: 
 5645: 
 5646: 
 5647: =item defaultFormData
 5648: 
 5649:   Returns html hidden inputs used to hold context/default values.
 5650: 
 5651:  Arguments:
 5652:   $symb - $symb of the current resource 
 5653: 
 5654: =cut
 5655: 
 5656: sub defaultFormData {
 5657:     my ($symb)=@_;
 5658:     return '<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />';
 5659: }
 5660: 
 5661: 
 5662: =pod 
 5663: 
 5664: =item getSequenceDropDown
 5665: 
 5666:    Return html dropdown of possible sequences to grade
 5667:  
 5668:  Arguments:
 5669:    $symb - $symb of the current resource
 5670:    $map_error - ref to scalar which will container error if
 5671:                 $navmap object is unavailable in &getSymbMap().
 5672: 
 5673: =cut
 5674: 
 5675: sub getSequenceDropDown {
 5676:     my ($symb,$map_error)=@_;
 5677:     my $result='<select name="selectpage">'."\n";
 5678:     my ($titles,$symbx) = &getSymbMap($map_error);
 5679:     if (ref($map_error)) {
 5680:         return if ($$map_error);
 5681:     }
 5682:     my ($curpage)=&Apache::lonnet::decode_symb($symb); 
 5683:     my $ctr=0;
 5684:     foreach (@$titles) {
 5685: 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 5686: 	$result.='<option value="'.$$symbx{$_}.'" '.
 5687: 	    ($$symbx{$_} =~ /$curpage$/ ? 'selected="selected"' : '').
 5688: 	    '>'.$showtitle.'</option>'."\n";
 5689: 	$ctr++;
 5690:     }
 5691:     $result.= '</select>';
 5692:     return $result;
 5693: }
 5694: 
 5695: my %bubble_lines_per_response;     # no. bubble lines for each response.
 5696:                                    # key is zero-based index - 0, 1, 2 ...
 5697: 
 5698: my %first_bubble_line;             # First bubble line no. for each bubble.
 5699: 
 5700: my %subdivided_bubble_lines;       # no. bubble lines for optionresponse, 
 5701:                                    # matchresponse or rankresponse, where 
 5702:                                    # an individual response can have multiple 
 5703:                                    # lines
 5704: 
 5705: my %responsetype_per_response;     # responsetype for each response
 5706: 
 5707: my %masterseq_id_responsenum;      # src_id (e.g., 12.3_0.11 etc.) for each
 5708:                                    # numbered response. Needed when randomorder
 5709:                                    # or randompick are in use. Key is ID, value 
 5710:                                    # is response number.
 5711: 
 5712: # Save and restore the bubble lines array to the form env.
 5713: 
 5714: 
 5715: sub save_bubble_lines {
 5716:     foreach my $line (keys(%bubble_lines_per_response)) {
 5717: 	$env{"form.scantron.bubblelines.$line"}  = $bubble_lines_per_response{$line};
 5718: 	$env{"form.scantron.first_bubble_line.$line"} =
 5719: 	    $first_bubble_line{$line};
 5720:         $env{"form.scantron.sub_bubblelines.$line"} = 
 5721:             $subdivided_bubble_lines{$line};
 5722:         $env{"form.scantron.responsetype.$line"} =
 5723:             $responsetype_per_response{$line};
 5724:     }
 5725:     foreach my $resid (keys(%masterseq_id_responsenum)) {
 5726:         my $line = $masterseq_id_responsenum{$resid};
 5727:         $env{"form.scantron.residpart.$line"} = $resid;
 5728:     }
 5729: }
 5730: 
 5731: 
 5732: sub restore_bubble_lines {
 5733:     my $line = 0;
 5734:     %bubble_lines_per_response = ();
 5735:     %masterseq_id_responsenum = ();
 5736:     while ($env{"form.scantron.bubblelines.$line"}) {
 5737: 	my $value = $env{"form.scantron.bubblelines.$line"};
 5738: 	$bubble_lines_per_response{$line} = $value;
 5739: 	$first_bubble_line{$line}  =
 5740: 	    $env{"form.scantron.first_bubble_line.$line"};
 5741:         $subdivided_bubble_lines{$line} =
 5742:             $env{"form.scantron.sub_bubblelines.$line"};
 5743:         $responsetype_per_response{$line} =
 5744:             $env{"form.scantron.responsetype.$line"};
 5745:         my $id = $env{"form.scantron.residpart.$line"};
 5746:         $masterseq_id_responsenum{$id} = $line;
 5747: 	$line++;
 5748:     }
 5749: }
 5750: 
 5751: =pod 
 5752: 
 5753: =item scantron_filenames
 5754: 
 5755:    Returns a list of the scantron files in the current course 
 5756: 
 5757: =cut
 5758: 
 5759: sub scantron_filenames {
 5760:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 5761:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 5762:     my $getpropath = 1;
 5763:     my ($dirlist,$listerror) = &Apache::lonnet::dirlist('userfiles',$cdom,
 5764:                                                         $cname,$getpropath);
 5765:     my @possiblenames;
 5766:     if (ref($dirlist) eq 'ARRAY') {
 5767:         foreach my $filename (sort(@{$dirlist})) {
 5768: 	    ($filename)=split(/&/,$filename);
 5769: 	    if ($filename!~/^scantron_orig_/) { next ; }
 5770: 	    $filename=~s/^scantron_orig_//;
 5771: 	    push(@possiblenames,$filename);
 5772:         }
 5773:     }
 5774:     return @possiblenames;
 5775: }
 5776: 
 5777: =pod 
 5778: 
 5779: =item scantron_uploads
 5780: 
 5781:    Returns  html drop-down list of scantron files in current course.
 5782: 
 5783:  Arguments:
 5784:    $file2grade - filename to set as selected in the dropdown
 5785: 
 5786: =cut
 5787: 
 5788: sub scantron_uploads {
 5789:     my ($file2grade) = @_;
 5790:     my $result=	'<select name="scantron_selectfile">';
 5791:     $result.="<option></option>";
 5792:     foreach my $filename (sort(&scantron_filenames())) {
 5793: 	$result.="<option".($filename eq $file2grade ? ' selected="selected"':'').">$filename</option>\n";
 5794:     }
 5795:     $result.="</select>";
 5796:     return $result;
 5797: }
 5798: 
 5799: =pod 
 5800: 
 5801: =item scantron_scantab
 5802: 
 5803:   Returns html drop down of the scantron formats in the scantronformat.tab
 5804:   file.
 5805: 
 5806: =cut
 5807: 
 5808: sub scantron_scantab {
 5809:     my $result='<select name="scantron_format">'."\n";
 5810:     $result.='<option></option>'."\n";
 5811:     my @lines = &Apache::lonnet::get_scantronformat_file();
 5812:     if (@lines > 0) {
 5813:         foreach my $line (@lines) {
 5814:             next if (($line =~ /^\#/) || ($line eq ''));
 5815: 	    my ($name,$descrip)=split(/:/,$line);
 5816: 	    $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
 5817:         }
 5818:     }
 5819:     $result.='</select>'."\n";
 5820:     return $result;
 5821: }
 5822: 
 5823: =pod 
 5824: 
 5825: =item scantron_CODElist
 5826: 
 5827:   Returns html drop down of the saved CODE lists from current course,
 5828:   generated from earlier printings.
 5829: 
 5830: =cut
 5831: 
 5832: sub scantron_CODElist {
 5833:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 5834:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 5835:     my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 5836:     my $namechoice='<option></option>';
 5837:     foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 5838: 	if ($name =~ /^error: 2 /) { next; }
 5839: 	if ($name =~ /^type\0/) { next; }
 5840: 	$namechoice.='<option value="'.$name.'">'.$name.'</option>';
 5841:     }
 5842:     $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
 5843:     return $namechoice;
 5844: }
 5845: 
 5846: =pod 
 5847: 
 5848: =item scantron_CODEunique
 5849: 
 5850:   Returns the html for "Each CODE to be used once" radio.
 5851: 
 5852: =cut
 5853: 
 5854: sub scantron_CODEunique {
 5855:     my $result='<span class="LC_nobreak">
 5856:                  <label><input type="radio" name="scantron_CODEunique"
 5857:                         value="yes" checked="checked" />'.&mt('Yes').' </label>
 5858:                 </span>
 5859:                 <span class="LC_nobreak">
 5860:                  <label><input type="radio" name="scantron_CODEunique"
 5861:                         value="no" />'.&mt('No').' </label>
 5862:                 </span>';
 5863:     return $result;
 5864: }
 5865: 
 5866: =pod 
 5867: 
 5868: =item scantron_selectphase
 5869: 
 5870:   Generates the initial screen to start the bubblesheet process.
 5871:   Allows for - starting a grading run.
 5872:              - downloading existing scan data (original, corrected
 5873:                                                 or skipped info)
 5874: 
 5875:              - uploading new scan data
 5876: 
 5877:  Arguments:
 5878:   $r          - The Apache request object
 5879:   $file2grade - name of the file that contain the scanned data to score
 5880: 
 5881: =cut
 5882: 
 5883: sub scantron_selectphase {
 5884:     my ($r,$file2grade,$symb) = @_;
 5885:     if (!$symb) {return '';}
 5886:     my $map_error;
 5887:     my $sequence_selector=&getSequenceDropDown($symb,\$map_error);
 5888:     if ($map_error) {
 5889:         $r->print('<br />'.&navmap_errormsg().'<br />');
 5890:         return;
 5891:     }
 5892:     my $default_form_data=&defaultFormData($symb);
 5893:     my $file_selector=&scantron_uploads($file2grade);
 5894:     my $format_selector=&scantron_scantab();
 5895:     my $CODE_selector=&scantron_CODElist();
 5896:     my $CODE_unique=&scantron_CODEunique();
 5897:     my $result;
 5898: 
 5899:     $ssi_error = 0;
 5900: 
 5901:     if (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) ||
 5902:         &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
 5903: 
 5904: 	# Chunk of form to prompt for a scantron file upload.
 5905: 
 5906:         $r->print('
 5907:     <br />');
 5908:     my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
 5909:     my $cnum= $env{'course.'.$env{'request.course.id'}.'.num'};
 5910:     my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
 5911:     &js_escape(\$alertmsg);
 5912:     my ($formatoptions,$formattitle,$formatjs) = &scantron_upload_dataformat($cdom);
 5913:     $r->print(&Apache::lonhtmlcommon::scripttag('
 5914:     function checkUpload(formname) {
 5915: 	if (formname.upfile.value == "") {
 5916: 	    alert("'.$alertmsg.'");
 5917: 	    return false;
 5918: 	}
 5919: 	formname.submit();
 5920:     }'."\n".$formatjs));
 5921:     $r->print('
 5922:               <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
 5923:                 '.$default_form_data.'
 5924:                 <input name="courseid" type="hidden" value="'.$cnum.'" />
 5925:                 <input name="domainid" type="hidden" value="'.$cdom.'" />
 5926:                 <input name="command" value="scantronupload_save" type="hidden" />
 5927:               '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 5928:               '.&Apache::loncommon::start_data_table_header_row().'
 5929:                 <th>
 5930:                 &nbsp;'.&mt('Specify a bubblesheet data file to upload.').'
 5931:                 </th>
 5932:               '.&Apache::loncommon::end_data_table_header_row().'
 5933:               '.&Apache::loncommon::start_data_table_row().'
 5934:             <td>
 5935:                 '.&mt('File to upload: [_1]','<input type="file" name="upfile" size="50" />').'<br />'."\n");
 5936:     if ($formatoptions) {
 5937:         $r->print('</td>
 5938:                  '.&Apache::loncommon::end_data_table_row().'
 5939:                  '.&Apache::loncommon::start_data_table_row().'
 5940:                  <td>'.$formattitle.('&nbsp;'x2).$formatoptions.'
 5941:                  </td>
 5942:                  '.&Apache::loncommon::end_data_table_row().'
 5943:                  '.&Apache::loncommon::start_data_table_row().'
 5944:                  <td>'
 5945:         );
 5946:     } else {
 5947:         $r->print(' <br />');
 5948:     }
 5949:     $r->print('<input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
 5950:               </td>
 5951:              '.&Apache::loncommon::end_data_table_row().'
 5952:              '.&Apache::loncommon::end_data_table().'
 5953:              </form>'
 5954:     );
 5955: 
 5956:     }
 5957: 
 5958:     # Chunk of form to prompt for a file to grade and how:
 5959: 
 5960:     $result.= '
 5961:     <br />
 5962:     <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
 5963:     <input type="hidden" name="command" value="scantron_warning" />
 5964:     '.$default_form_data.'
 5965:     '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 5966:        '.&Apache::loncommon::start_data_table_header_row().'
 5967:             <th colspan="2">
 5968:               &nbsp;'.&mt('Specify file and which Folder/Sequence to grade').'
 5969:             </th>
 5970:        '.&Apache::loncommon::end_data_table_header_row().'
 5971:        '.&Apache::loncommon::start_data_table_row().'
 5972:             <td> '.&mt('Sequence to grade:').' </td><td> '.$sequence_selector.' </td>
 5973:        '.&Apache::loncommon::end_data_table_row().'
 5974:        '.&Apache::loncommon::start_data_table_row().'
 5975:             <td> '.&mt('Filename of bubblesheet data file:').' </td><td> '.$file_selector.' </td>
 5976:        '.&Apache::loncommon::end_data_table_row().'
 5977:        '.&Apache::loncommon::start_data_table_row().'
 5978:             <td> '.&mt('Format of bubblesheet data file:').' </td><td> '.$format_selector.' </td>
 5979:        '.&Apache::loncommon::end_data_table_row().'
 5980:        '.&Apache::loncommon::start_data_table_row().'
 5981:             <td> '.&mt('Saved CODEs to validate against:').' </td><td> '.$CODE_selector.' </td>
 5982:        '.&Apache::loncommon::end_data_table_row().'
 5983:        '.&Apache::loncommon::start_data_table_row().'
 5984:             <td> '.&mt('Each CODE is only to be used once:').'</td><td> '.$CODE_unique.' </td>
 5985:        '.&Apache::loncommon::end_data_table_row().'
 5986:        '.&Apache::loncommon::start_data_table_row().'
 5987: 	    <td> '.&mt('Options:').' </td>
 5988:             <td>
 5989: 	       <label><input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> '.&mt('Do only previously skipped records').'</label> <br />
 5990:                <label><input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> '.&mt('Remove all existing corrections').'</label> <br />
 5991:                <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources when grading').'</label>
 5992: 	    </td>
 5993:        '.&Apache::loncommon::end_data_table_row().'
 5994:        '.&Apache::loncommon::start_data_table_row().'
 5995:             <td colspan="2">
 5996:               <input type="submit" value="'.&mt('Grading: Validate Bubblesheet Records').'" />
 5997:             </td>
 5998:        '.&Apache::loncommon::end_data_table_row().'
 5999:     '.&Apache::loncommon::end_data_table().'
 6000:     </form>
 6001: ';
 6002:    
 6003:     $r->print($result);
 6004: 
 6005: 
 6006: 
 6007:     # Chunk of the form that prompts to view a scoring office file,
 6008:     # corrected file, skipped records in a file.
 6009: 
 6010:     $r->print('
 6011:    <br />
 6012:    <form action="/adm/grades" name="scantron_download">
 6013:      '.$default_form_data.'
 6014:      <input type="hidden" name="command" value="scantron_download" />
 6015:      '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 6016:        '.&Apache::loncommon::start_data_table_header_row().'
 6017:               <th>
 6018:                 &nbsp;'.&mt('Download a scoring office file').'
 6019:               </th>
 6020:        '.&Apache::loncommon::end_data_table_header_row().'
 6021:        '.&Apache::loncommon::start_data_table_row().'
 6022:               <td> '.&mt('Filename of scoring office file: [_1]',$file_selector).' 
 6023:                 <br />
 6024:                 <input type="submit" value="'.&mt('Download: Show List of Associated Files').'" />
 6025:        '.&Apache::loncommon::end_data_table_row().'
 6026:      '.&Apache::loncommon::end_data_table().'
 6027:    </form>
 6028:    <br />
 6029: ');
 6030: 
 6031:     &Apache::lonpickcode::code_list($r,2);
 6032: 
 6033:     $r->print('<br /><form method="post" name="checkscantron" action="">'.
 6034:              $default_form_data."\n".
 6035:              &Apache::loncommon::start_data_table('LC_scantron_action')."\n".
 6036:              &Apache::loncommon::start_data_table_header_row()."\n".
 6037:              '<th colspan="2">
 6038:               &nbsp;'.&mt('Review bubblesheet data and submissions for a previously graded folder/sequence')."\n".
 6039:              '</th>'."\n".
 6040:               &Apache::loncommon::end_data_table_header_row()."\n".
 6041:               &Apache::loncommon::start_data_table_row()."\n".
 6042:               '<td> '.&mt('Graded folder/sequence:').' </td>'."\n".
 6043:               '<td> '.$sequence_selector.' </td>'.
 6044:               &Apache::loncommon::end_data_table_row()."\n".
 6045:               &Apache::loncommon::start_data_table_row()."\n".
 6046:               '<td> '.&mt('Filename of scoring office file:').' </td>'."\n".
 6047:               '<td> '.$file_selector.' </td>'."\n".
 6048:               &Apache::loncommon::end_data_table_row()."\n".
 6049:               &Apache::loncommon::start_data_table_row()."\n".
 6050:               '<td> '.&mt('Format of data file:').' </td>'."\n".
 6051:               '<td> '.$format_selector.' </td>'."\n".
 6052:               &Apache::loncommon::end_data_table_row()."\n".
 6053:               &Apache::loncommon::start_data_table_row()."\n".
 6054:               '<td> '.&mt('Options').' </td>'."\n".
 6055:               '<td> <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources').'</label></td>'.
 6056:               &Apache::loncommon::end_data_table_row()."\n".
 6057:               &Apache::loncommon::start_data_table_row()."\n".
 6058:               '<td colspan="2">'."\n".
 6059:               '<input type="hidden" name="command" value="checksubmissions" />'."\n".
 6060:               '<input type="submit" value="'.&mt('Review Bubblesheet Data and Submission Records').'" />'."\n".
 6061:               '</td>'."\n".
 6062:               &Apache::loncommon::end_data_table_row()."\n".
 6063:               &Apache::loncommon::end_data_table()."\n".
 6064:               '</form><br />');
 6065:     return;
 6066: }
 6067: 
 6068: =pod 
 6069: 
 6070: =item username_to_idmap
 6071: 
 6072:     creates a hash keyed by student/employee ID with values of the corresponding
 6073:     student username:domain. If a single ID occurs for more than one student,
 6074:     the status of the student is checked, and if Active, the value in the hash
 6075:     will be set to the Active student.
 6076: 
 6077:   Arguments:
 6078: 
 6079:     $classlist - reference to the class list hash. This is a hash
 6080:                  keyed by student name:domain  whose elements are references
 6081:                  to arrays containing various chunks of information
 6082:                  about the student. (See loncoursedata for more info).
 6083: 
 6084:   Returns
 6085:     %idmap - the constructed hash
 6086: 
 6087: =cut
 6088: 
 6089: sub username_to_idmap {
 6090:     my ($classlist)= @_;
 6091:     my %idmap;
 6092:     foreach my $student (keys(%$classlist)) {
 6093:         my $id = $classlist->{$student}->[&Apache::loncoursedata::CL_ID];
 6094:         unless ($id eq '') {
 6095:             if (!exists($idmap{$id})) {
 6096:                 $idmap{$id} = $student;
 6097:             } else {
 6098:                 my $status = $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS];
 6099:                 if ($status eq 'Active') {
 6100:                     $idmap{$id} = $student;
 6101:                 }
 6102:             }
 6103:         }
 6104:     }
 6105:     return %idmap;
 6106: }
 6107: 
 6108: =pod
 6109: 
 6110: =item scantron_fixup_scanline
 6111: 
 6112:    Process a requested correction to a scanline.
 6113: 
 6114:   Arguments:
 6115:     $scantron_config   - hash from &Apache::lonnet::get_scantron_config()
 6116:     $scan_data         - hash of correction information 
 6117:                           (see &scantron_getfile())
 6118:     $line              - existing scanline
 6119:     $whichline         - line number of the passed in scanline
 6120:     $field             - type of change to process 
 6121:                          (either 
 6122:                           'ID'     -> correct the student/employee ID
 6123:                           'CODE'   -> correct the CODE
 6124:                           'answer' -> fixup the submitted answers)
 6125:     
 6126:    $args               - hash of additional info,
 6127:                           - 'ID' 
 6128:                                'newid' -> studentID to use in replacement
 6129:                                           of existing one
 6130:                           - 'CODE' 
 6131:                                'CODE_ignore_dup' - set to true if duplicates
 6132:                                                    should be ignored.
 6133: 	                       'CODE' - is new code or 'use_unfound'
 6134:                                         if the existing unfound code should
 6135:                                         be used as is
 6136:                           - 'answer'
 6137:                                'response' - new answer or 'none' if blank
 6138:                                'question' - the bubble line to change
 6139:                                'questionnum' - the question identifier,
 6140:                                                may include subquestion. 
 6141: 
 6142:   Returns:
 6143:     $line - the modified scanline
 6144: 
 6145:   Side effects: 
 6146:     $scan_data - may be updated
 6147: 
 6148: =cut
 6149: 
 6150: 
 6151: sub scantron_fixup_scanline {
 6152:     my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
 6153:     if ($field eq 'ID') {
 6154: 	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
 6155: 	    return ($line,1,'New value too large');
 6156: 	}
 6157: 	if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
 6158: 	    $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
 6159: 				     $args->{'newid'});
 6160: 	}
 6161: 	substr($line,$$scantron_config{'IDstart'}-1,
 6162: 	       $$scantron_config{'IDlength'})=$args->{'newid'};
 6163: 	if ($args->{'newid'}=~/^\s*$/) {
 6164: 	    &scan_data($scan_data,"$whichline.user",
 6165: 		       $args->{'username'}.':'.$args->{'domain'});
 6166: 	}
 6167:     } elsif ($field eq 'CODE') {
 6168: 	if ($args->{'CODE_ignore_dup'}) {
 6169: 	    &scan_data($scan_data,"$whichline.CODE_ignore_dup",'1');
 6170: 	}
 6171: 	&scan_data($scan_data,"$whichline.useCODE",'1');
 6172: 	if ($args->{'CODE'} ne 'use_unfound') {
 6173: 	    if (length($args->{'CODE'}) > $$scantron_config{'CODElength'}) {
 6174: 		return ($line,1,'New CODE value too large');
 6175: 	    }
 6176: 	    if (length($args->{'CODE'}) < $$scantron_config{'CODElength'}) {
 6177: 		$args->{'CODE'}=sprintf('%-'.$$scantron_config{'CODElength'}.'s',$args->{'CODE'});
 6178: 	    }
 6179: 	    substr($line,$$scantron_config{'CODEstart'}-1,
 6180: 		   $$scantron_config{'CODElength'})=$args->{'CODE'};
 6181: 	}
 6182:     } elsif ($field eq 'answer') {
 6183: 	my $length=$scantron_config->{'Qlength'};
 6184: 	my $off=$scantron_config->{'Qoff'};
 6185: 	my $on=$scantron_config->{'Qon'};
 6186: 	my $answer=${off}x$length;
 6187: 	if ($args->{'response'} eq 'none') {
 6188: 	    &scan_data($scan_data,
 6189: 		       "$whichline.no_bubble.".$args->{'questionnum'},'1');
 6190: 	} else {
 6191: 	    if ($on eq 'letter') {
 6192: 		my @alphabet=('A'..'Z');
 6193: 		$answer=$alphabet[$args->{'response'}];
 6194: 	    } elsif ($on eq 'number') {
 6195: 		$answer=$args->{'response'}+1;
 6196: 		if ($answer == 10) { $answer = '0'; }
 6197: 	    } else {
 6198: 		substr($answer,$args->{'response'},1)=$on;
 6199: 	    }
 6200: 	    &scan_data($scan_data,
 6201: 		       "$whichline.no_bubble.".$args->{'questionnum'},undef,'1');
 6202: 	}
 6203: 	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
 6204: 	substr($line,$where-1,$length)=$answer;
 6205:     }
 6206:     return $line;
 6207: }
 6208: 
 6209: =pod
 6210: 
 6211: =item scan_data
 6212: 
 6213:     Edit or look up  an item in the scan_data hash.
 6214: 
 6215:   Arguments:
 6216:     $scan_data  - The hash (see scantron_getfile)
 6217:     $key        - shorthand of the key to edit (actual key is
 6218:                   scantronfilename_key).
 6219:     $data        - New value of the hash entry.
 6220:     $delete      - If true, the entry is removed from the hash.
 6221: 
 6222:   Returns:
 6223:     The new value of the hash table field (undefined if deleted).
 6224: 
 6225: =cut
 6226: 
 6227: 
 6228: sub scan_data {
 6229:     my ($scan_data,$key,$value,$delete)=@_;
 6230:     my $filename=$env{'form.scantron_selectfile'};
 6231:     if (defined($value)) {
 6232: 	$scan_data->{$filename.'_'.$key} = $value;
 6233:     }
 6234:     if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
 6235:     return $scan_data->{$filename.'_'.$key};
 6236: }
 6237: 
 6238: # ----- These first few routines are general use routines.----
 6239: 
 6240: # Return the number of occurences of a pattern in a string.
 6241: 
 6242: sub occurence_count {
 6243:     my ($string, $pattern) = @_;
 6244: 
 6245:     my @matches = ($string =~ /$pattern/g);
 6246: 
 6247:     return scalar(@matches);
 6248: }
 6249: 
 6250: 
 6251: # Take a string known to have digits and convert all the
 6252: # digits into letters in the range J,A..I.
 6253: 
 6254: sub digits_to_letters {
 6255:     my ($input) = @_;
 6256: 
 6257:     my @alphabet = ('J', 'A'..'I');
 6258: 
 6259:     my @input    = split(//, $input);
 6260:     my $output ='';
 6261:     for (my $i = 0; $i < scalar(@input); $i++) {
 6262: 	if ($input[$i] =~ /\d/) {
 6263: 	    $output .= $alphabet[$input[$i]];
 6264: 	} else {
 6265: 	    $output .= $input[$i];
 6266: 	}
 6267:     }
 6268:     return $output;
 6269: }
 6270: 
 6271: =pod 
 6272: 
 6273: =item scantron_parse_scanline
 6274: 
 6275:   Decodes a scanline from the selected bubblesheet file
 6276: 
 6277:  Arguments:
 6278:     line             - The text of the bubblesheet file line to process
 6279:     whichline        - Line number
 6280:     scantron_config  - Hash describing the format of the bubblesheet lines.
 6281:     scan_data        - Hash of extra information about the scanline
 6282:                        (see scantron_getfile for more information)
 6283:     just_header      - True if should not process question answers but only
 6284:                        the stuff to the left of the answers.
 6285:     randomorder      - True if randomorder in use
 6286:     randompick       - True if randompick in use
 6287:     sequence         - Exam folder URL
 6288:     master_seq       - Ref to array containing symbs in exam folder
 6289:     symb_to_resource - Ref to hash of symbs for resources in exam folder
 6290:                        (corresponding values are resource objects)
 6291:     partids_by_symb  - Ref to hash of symb -> array ref of partIDs
 6292:     orderedforcode   - Ref to hash of arrays. keys are CODEs and values
 6293:                        are refs to an array of resource objects, ordered
 6294:                        according to order used for CODE, when randomorder
 6295:                        and or randompick are in use.
 6296:     respnumlookup    - Ref to hash mapping question numbers in bubble lines
 6297:                        for current line to question number used for same question
 6298:                         in "Master Sequence" (as seen by Course Coordinator).
 6299:     startline        - Ref to hash where key is question number (0 is first)
 6300:                        and value is number of first bubble line for current 
 6301:                        student or code-based randompick and/or randomorder.
 6302:     totalref         - Ref of scalar used to score total number of bubble
 6303:                        lines needed for responses in a scan line (used when
 6304:                        randompick in use. 
 6305:     
 6306:  Returns:
 6307:    Hash containing the result of parsing the scanline
 6308: 
 6309:    Keys are all proceeded by the string 'scantron.'
 6310: 
 6311:        CODE    - the CODE in use for this scanline
 6312:        useCODE - 1 if the CODE is invalid but it usage has been forced
 6313:                  by the operator
 6314:        CODE_ignore_dup - 1 if the CODE is a duplicated use when unique
 6315:                             CODEs were selected, but the usage has been
 6316:                             forced by the operator
 6317:        ID  - student/employee ID
 6318:        PaperID - if used, the ID number printed on the sheet when the 
 6319:                  paper was scanned
 6320:        FirstName - first name from the sheet
 6321:        LastName  - last name from the sheet
 6322: 
 6323:      if just_header was not true these key may also exist
 6324: 
 6325:        missingerror - a list of bubble ranges that are considered to be answers
 6326:                       to a single question that don't have any bubbles filled in.
 6327:                       Of the form questionnumber:firstbubblenumber:count.
 6328:        doubleerror  - a list of bubble ranges that are considered to be answers
 6329:                       to a single question that have more than one bubble filled in.
 6330:                       Of the form questionnumber::firstbubblenumber:count
 6331:    
 6332:                 In the above, count is the number of bubble responses in the
 6333:                 input line needed to represent the possible answers to the question.
 6334:                 e.g. a radioresponse with 15 choices in an answer sheet with 10 choices
 6335:                 per line would have count = 2.
 6336: 
 6337:        maxquest     - the number of the last bubble line that was parsed
 6338: 
 6339:        (<number> starts at 1)
 6340:        <number>.answer - zero or more letters representing the selected
 6341:                          letters from the scanline for the bubble line 
 6342:                          <number>.
 6343:                          if blank there was either no bubble or there where
 6344:                          multiple bubbles, (consult the keys missingerror and
 6345:                          doubleerror if this is an error condition)
 6346: 
 6347: =cut
 6348: 
 6349: sub scantron_parse_scanline {
 6350:     my ($line,$whichline,$scantron_config,$scan_data,$just_header,$idmap,
 6351:         $randomorder,$randompick,$sequence,$master_seq,$symb_to_resource,
 6352:         $partids_by_symb,$orderedforcode,$respnumlookup,$startline,$totalref)=@_;
 6353: 
 6354:     my %record;
 6355:     my $data=substr($line,0,$$scantron_config{'Qstart'}-1); # stuff before answers
 6356:     if (!($$scantron_config{'CODElocation'} eq 0 ||
 6357: 	  $$scantron_config{'CODElocation'} eq 'none')) {
 6358: 	if ($$scantron_config{'CODElocation'} < 0 ||
 6359: 	    $$scantron_config{'CODElocation'} eq 'letter' ||
 6360: 	    $$scantron_config{'CODElocation'} eq 'number') {
 6361: 	    $record{'scantron.CODE'}=substr($data,
 6362: 					    $$scantron_config{'CODEstart'}-1,
 6363: 					    $$scantron_config{'CODElength'});
 6364: 	    if (&scan_data($scan_data,"$whichline.useCODE")) {
 6365: 		$record{'scantron.useCODE'}=1;
 6366: 	    }
 6367: 	    if (&scan_data($scan_data,"$whichline.CODE_ignore_dup")) {
 6368: 		$record{'scantron.CODE_ignore_dup'}=1;
 6369: 	    }
 6370: 	} else {
 6371: 	    #FIXME interpret first N questions
 6372: 	}
 6373:     }
 6374:     $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
 6375: 				  $$scantron_config{'IDlength'});
 6376:     $record{'scantron.PaperID'}=
 6377: 	substr($data,$$scantron_config{'PaperID'}-1,
 6378: 	       $$scantron_config{'PaperIDlength'});
 6379:     $record{'scantron.FirstName'}=
 6380: 	substr($data,$$scantron_config{'FirstName'}-1,
 6381: 	       $$scantron_config{'FirstNamelength'});
 6382:     $record{'scantron.LastName'}=
 6383: 	substr($data,$$scantron_config{'LastName'}-1,
 6384: 	       $$scantron_config{'LastNamelength'});
 6385:     if ($just_header) { return \%record; }
 6386: 
 6387:     my @alphabet=('A'..'Z');
 6388:     my $questnum=0;
 6389:     my $ansnum  =1;		# Multiple 'answer lines'/question.
 6390: 
 6391:     my $lastpos = $env{'form.scantron_maxbubble'}*$$scantron_config{'Qlength'};
 6392:     if ($randompick || $randomorder) {
 6393:         my $total = &get_respnum_lookups($sequence,$scan_data,$idmap,$line,\%record,
 6394:                                          $master_seq,$symb_to_resource,
 6395:                                          $partids_by_symb,$orderedforcode,
 6396:                                          $respnumlookup,$startline);
 6397:         if ($total) {
 6398:             $lastpos = $total*$$scantron_config{'Qlength'}; 
 6399:         }
 6400:         if (ref($totalref)) {
 6401:             $$totalref = $total;
 6402:         }
 6403:     }
 6404:     my $questions=substr($line,$$scantron_config{'Qstart'}-1,$lastpos);  # Answers
 6405:     chomp($questions);		# Get rid of any trailing \n.
 6406:     $questions =~ s/\r$//;      # Get rid of trailing \r too (MAC or Win uploads).
 6407:     while (length($questions)) {
 6408:         my $answers_needed;
 6409:         if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6410:             $answers_needed = $bubble_lines_per_response{$respnumlookup->{$questnum}};
 6411:         } else {
 6412: 	    $answers_needed = $bubble_lines_per_response{$questnum};
 6413:         }
 6414:         my $answer_length  = ($$scantron_config{'Qlength'} * $answers_needed)
 6415:                              || 1;
 6416:         $questnum++;
 6417:         my $quest_id = $questnum;
 6418:         my $currentquest = substr($questions,0,$answer_length);
 6419:         $questions       = substr($questions,$answer_length);
 6420:         if (length($currentquest) < $answer_length) { next; }
 6421: 
 6422:         my $subdivided;
 6423:         if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6424:             $subdivided = $subdivided_bubble_lines{$respnumlookup->{$questnum-1}};
 6425:         } else {
 6426:             $subdivided = $subdivided_bubble_lines{$questnum-1};
 6427:         }
 6428:         if ($subdivided =~ /,/) {
 6429:             my $subquestnum = 1;
 6430:             my $subquestions = $currentquest;
 6431:             my @subanswers_needed = split(/,/,$subdivided);
 6432:             foreach my $subans (@subanswers_needed) {
 6433:                 my $subans_length =
 6434:                     ($$scantron_config{'Qlength'} * $subans)  || 1;
 6435:                 my $currsubquest = substr($subquestions,0,$subans_length);
 6436:                 $subquestions   = substr($subquestions,$subans_length);
 6437:                 $quest_id = "$questnum.$subquestnum";
 6438:                 if (($$scantron_config{'Qon'} eq 'letter') ||
 6439:                     ($$scantron_config{'Qon'} eq 'number')) {
 6440:                     $ansnum = &scantron_validator_lettnum($ansnum, 
 6441:                         $questnum,$quest_id,$subans,$currsubquest,$whichline,
 6442:                         \@alphabet,\%record,$scantron_config,$scan_data,
 6443:                         $randomorder,$randompick,$respnumlookup);
 6444:                 } else {
 6445:                     $ansnum = &scantron_validator_positional($ansnum,
 6446:                         $questnum,$quest_id,$subans,$currsubquest,$whichline,
 6447:                         \@alphabet,\%record,$scantron_config,$scan_data,
 6448:                         $randomorder,$randompick,$respnumlookup);
 6449:                 }
 6450:                 $subquestnum ++;
 6451:             }
 6452:         } else {
 6453:             if (($$scantron_config{'Qon'} eq 'letter') ||
 6454:                 ($$scantron_config{'Qon'} eq 'number')) {
 6455:                 $ansnum = &scantron_validator_lettnum($ansnum,$questnum,
 6456:                     $quest_id,$answers_needed,$currentquest,$whichline,
 6457:                     \@alphabet,\%record,$scantron_config,$scan_data,
 6458:                     $randomorder,$randompick,$respnumlookup);
 6459:             } else {
 6460:                 $ansnum = &scantron_validator_positional($ansnum,$questnum,
 6461:                     $quest_id,$answers_needed,$currentquest,$whichline,
 6462:                     \@alphabet,\%record,$scantron_config,$scan_data,
 6463:                     $randomorder,$randompick,$respnumlookup);
 6464:             }
 6465:         }
 6466:     }
 6467:     $record{'scantron.maxquest'}=$questnum;
 6468:     return \%record;
 6469: }
 6470: 
 6471: sub get_master_seq {
 6472:     my ($resources,$master_seq,$symb_to_resource) = @_;
 6473:     return unless ((ref($resources) eq 'ARRAY') && (ref($master_seq) eq 'ARRAY') && 
 6474:                    (ref($symb_to_resource) eq 'HASH'));
 6475:     my $resource_error;
 6476:     foreach my $resource (@{$resources}) {
 6477:         my $ressymb;
 6478:         if (ref($resource)) {
 6479:             $ressymb = $resource->symb();
 6480:             push(@{$master_seq},$ressymb);
 6481:             $symb_to_resource->{$ressymb} = $resource;
 6482:         } else {
 6483:             $resource_error = 1;
 6484:             last;
 6485:         }
 6486:     }
 6487:     return $resource_error;
 6488: }
 6489: 
 6490: sub get_respnum_lookups {
 6491:     my ($sequence,$scan_data,$idmap,$line,$record,$master_seq,$symb_to_resource,
 6492:         $partids_by_symb,$orderedforcode,$respnumlookup,$startline) = @_;
 6493:     return unless ((ref($record) eq 'HASH') && (ref($master_seq) eq 'ARRAY') &&
 6494:                    (ref($symb_to_resource) eq 'HASH') && (ref($partids_by_symb) eq 'HASH') &&
 6495:                    (ref($orderedforcode) eq 'HASH') && (ref($respnumlookup) eq 'HASH') &&
 6496:                    (ref($startline) eq 'HASH'));
 6497:     my ($user,$scancode);
 6498:     if ((exists($record->{'scantron.CODE'})) &&
 6499:         (&Apache::lonnet::validCODE($record->{'scantron.CODE'}))) {
 6500:         $scancode = $record->{'scantron.CODE'};
 6501:     } else {
 6502:         $user = &scantron_find_student($record,$scan_data,$idmap,$line);
 6503:     }
 6504:     my @mapresources =
 6505:         &users_order($user,$scancode,$sequence,$master_seq,$symb_to_resource,
 6506:                      $orderedforcode);
 6507:     my $total = 0;
 6508:     my $count = 0;
 6509:     foreach my $resource (@mapresources) {
 6510:         my $id = $resource->id();
 6511:         my $symb = $resource->symb();
 6512:         if (ref($partids_by_symb->{$symb}) eq 'ARRAY') {
 6513:             foreach my $partid (@{$partids_by_symb->{$symb}}) {
 6514:                 my $respnum = $masterseq_id_responsenum{$id.'_'.$partid};
 6515:                 if ($respnum ne '') {
 6516:                     $respnumlookup->{$count} = $respnum;
 6517:                     $startline->{$count} = $total;
 6518:                     $total += $bubble_lines_per_response{$respnum};
 6519:                     $count ++;
 6520:                 }
 6521:             }
 6522:         }
 6523:     }
 6524:     return $total;
 6525: }
 6526: 
 6527: sub scantron_validator_lettnum {
 6528:     my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,$whichline,
 6529:         $alphabet,$record,$scantron_config,$scan_data,$randomorder,
 6530:         $randompick,$respnumlookup) = @_;
 6531: 
 6532:     # Qon 'letter' implies for each slot in currquest we have:
 6533:     #    ? or * for doubles, a letter in A-Z for a bubble, and
 6534:     #    about anything else (esp. a value of Qoff) for missing
 6535:     #    bubbles.
 6536:     #
 6537:     # Qon 'number' implies each slot gives a digit that indexes the
 6538:     #    bubbles filled, or Qoff, or a non-number for unbubbled lines,
 6539:     #    and * or ? for double bubbles on a single line.
 6540:     #
 6541: 
 6542:     my $matchon;
 6543:     if ($$scantron_config{'Qon'} eq 'letter') {
 6544:         $matchon = '[A-Z]';
 6545:     } elsif ($$scantron_config{'Qon'} eq 'number') {
 6546:         $matchon = '\d';
 6547:     }
 6548:     my $occurrences = 0;
 6549:     my $responsenum = $questnum-1;
 6550:     if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6551:        $responsenum = $respnumlookup->{$questnum-1} 
 6552:     }
 6553:     if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
 6554:         ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
 6555:         ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
 6556:         ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
 6557:         ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
 6558:         ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
 6559:         my @singlelines = split('',$currquest);
 6560:         foreach my $entry (@singlelines) {
 6561:             $occurrences = &occurence_count($entry,$matchon);
 6562:             if ($occurrences > 1) {
 6563:                 last;
 6564:             }
 6565:         }
 6566:     } else {
 6567:         $occurrences = &occurence_count($currquest,$matchon); 
 6568:     }
 6569:     if (($currquest =~ /\?/ || $currquest =~ /\*/) || ($occurrences > 1)) {
 6570:         push(@{$record->{'scantron.doubleerror'}},$quest_id);
 6571:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6572:             my $bubble = substr($currquest,$ans,1);
 6573:             if ($bubble =~ /$matchon/ ) {
 6574:                 if ($$scantron_config{'Qon'} eq 'number') {
 6575:                     if ($bubble == 0) {
 6576:                         $bubble = 10; 
 6577:                     }
 6578:                     $record->{"scantron.$ansnum.answer"} = 
 6579:                         $alphabet->[$bubble-1];
 6580:                 } else {
 6581:                     $record->{"scantron.$ansnum.answer"} = $bubble;
 6582:                 }
 6583:             } else {
 6584:                 $record->{"scantron.$ansnum.answer"}='';
 6585:             }
 6586:             $ansnum++;
 6587:         }
 6588:     } elsif (!defined($currquest)
 6589:             || (&occurence_count($currquest, $$scantron_config{'Qoff'}) == length($currquest))
 6590:             || (&occurence_count($currquest,$matchon) == 0)) {
 6591:         for (my $ans=0; $ans<$answers_needed; $ans++ ) {
 6592:             $record->{"scantron.$ansnum.answer"}='';
 6593:             $ansnum++;
 6594:         }
 6595:         if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
 6596:             push(@{$record->{'scantron.missingerror'}},$quest_id);
 6597:         }
 6598:     } else {
 6599:         if ($$scantron_config{'Qon'} eq 'number') {
 6600:             $currquest = &digits_to_letters($currquest);            
 6601:         }
 6602:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6603:             my $bubble = substr($currquest,$ans,1);
 6604:             $record->{"scantron.$ansnum.answer"} = $bubble;
 6605:             $ansnum++;
 6606:         }
 6607:     }
 6608:     return $ansnum;
 6609: }
 6610: 
 6611: sub scantron_validator_positional {
 6612:     my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,
 6613:         $whichline,$alphabet,$record,$scantron_config,$scan_data,
 6614:         $randomorder,$randompick,$respnumlookup) = @_;
 6615: 
 6616:     # Otherwise there's a positional notation;
 6617:     # each bubble line requires Qlength items, and there are filled in
 6618:     # bubbles for each case where there 'Qon' characters.
 6619:     #
 6620: 
 6621:     my @array=split($$scantron_config{'Qon'},$currquest,-1);
 6622: 
 6623:     # If the split only gives us one element.. the full length of the
 6624:     # answer string, no bubbles are filled in:
 6625: 
 6626:     if ($answers_needed eq '') {
 6627:         return;
 6628:     }
 6629: 
 6630:     if (length($array[0]) eq $$scantron_config{'Qlength'}*$answers_needed) {
 6631:         for (my $ans=0; $ans<$answers_needed; $ans++ ) {
 6632:             $record->{"scantron.$ansnum.answer"}='';
 6633:             $ansnum++;
 6634:         }
 6635:         if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
 6636:             push(@{$record->{"scantron.missingerror"}},$quest_id);
 6637:         }
 6638:     } elsif (scalar(@array) == 2) {
 6639:         my $location = length($array[0]);
 6640:         my $line_num = int($location / $$scantron_config{'Qlength'});
 6641:         my $bubble   = $alphabet->[$location % $$scantron_config{'Qlength'}];
 6642:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6643:             if ($ans eq $line_num) {
 6644:                 $record->{"scantron.$ansnum.answer"} = $bubble;
 6645:             } else {
 6646:                 $record->{"scantron.$ansnum.answer"} = ' ';
 6647:             }
 6648:             $ansnum++;
 6649:          }
 6650:     } else {
 6651:         #  If there's more than one instance of a bubble character
 6652:         #  That's a double bubble; with positional notation we can
 6653:         #  record all the bubbles filled in as well as the
 6654:         #  fact this response consists of multiple bubbles.
 6655:         #
 6656:         my $responsenum = $questnum-1;
 6657:         if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6658:             $responsenum = $respnumlookup->{$questnum-1}
 6659:         }
 6660:         if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
 6661:             ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
 6662:             ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
 6663:             ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
 6664:             ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
 6665:             ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
 6666:             my $doubleerror = 0;
 6667:             while (($currquest >= $$scantron_config{'Qlength'}) && 
 6668:                    (!$doubleerror)) {
 6669:                my $currline = substr($currquest,0,$$scantron_config{'Qlength'});
 6670:                $currquest = substr($currquest,$$scantron_config{'Qlength'});
 6671:                my @currarray = split($$scantron_config{'Qon'},$currline,-1);
 6672:                if (length(@currarray) > 2) {
 6673:                    $doubleerror = 1;
 6674:                } 
 6675:             }
 6676:             if ($doubleerror) {
 6677:                 push(@{$record->{'scantron.doubleerror'}},$quest_id);
 6678:             }
 6679:         } else {
 6680:             push(@{$record->{'scantron.doubleerror'}},$quest_id);
 6681:         }
 6682:         my $item = $ansnum;
 6683:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6684:             $record->{"scantron.$item.answer"} = '';
 6685:             $item ++;
 6686:         }
 6687: 
 6688:         my @ans=@array;
 6689:         my $i=0;
 6690:         my $increment = 0;
 6691:         while ($#ans) {
 6692:             $i+=length($ans[0]) + $increment;
 6693:             my $line   = int($i/$$scantron_config{'Qlength'} + $ansnum);
 6694:             my $bubble = $i%$$scantron_config{'Qlength'};
 6695:             $record->{"scantron.$line.answer"}.=$alphabet->[$bubble];
 6696:             shift(@ans);
 6697:             $increment = 1;
 6698:         }
 6699:         $ansnum += $answers_needed;
 6700:     }
 6701:     return $ansnum;
 6702: }
 6703: 
 6704: =pod
 6705: 
 6706: =item scantron_add_delay
 6707: 
 6708:    Adds an error message that occurred during the grading phase to a
 6709:    queue of messages to be shown after grading pass is complete
 6710: 
 6711:  Arguments:
 6712:    $delayqueue  - arrary ref of hash ref of error messages
 6713:    $scanline    - the scanline that caused the error
 6714:    $errormesage - the error message
 6715:    $errorcode   - a numeric code for the error
 6716: 
 6717:  Side Effects:
 6718:    updates the $delayqueue to have a new hash ref of the error
 6719: 
 6720: =cut
 6721: 
 6722: sub scantron_add_delay {
 6723:     my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
 6724:     push(@$delayqueue,
 6725: 	 {'line' => $scanline, 'emsg' => $errormessage,
 6726: 	  'ecode' => $errorcode }
 6727: 	 );
 6728: }
 6729: 
 6730: =pod
 6731: 
 6732: =item scantron_find_student
 6733: 
 6734:    Finds the username for the current scanline
 6735: 
 6736:   Arguments:
 6737:    $scantron_record - hash result from scantron_parse_scanline
 6738:    $scan_data       - hash of correction information 
 6739:                       (see &scantron_getfile() form more information)
 6740:    $idmap           - hash from &username_to_idmap()
 6741:    $line            - number of current scanline
 6742:  
 6743:   Returns:
 6744:    Either 'username:domain' or undef if unknown
 6745: 
 6746: =cut
 6747: 
 6748: sub scantron_find_student {
 6749:     my ($scantron_record,$scan_data,$idmap,$line)=@_;
 6750:     my $scanID=$$scantron_record{'scantron.ID'};
 6751:     if ($scanID =~ /^\s*$/) {
 6752:  	return &scan_data($scan_data,"$line.user");
 6753:     }
 6754:     foreach my $id (keys(%$idmap)) {
 6755:  	if (lc($id) eq lc($scanID)) {
 6756:  	    return $$idmap{$id};
 6757:  	}
 6758:     }
 6759:     return undef;
 6760: }
 6761: 
 6762: =pod
 6763: 
 6764: =item scantron_filter
 6765: 
 6766:    Filter sub for lonnavmaps, filters out hidden resources if ignore
 6767:    hidden resources was selected
 6768: 
 6769: =cut
 6770: 
 6771: sub scantron_filter {
 6772:     my ($curres)=@_;
 6773: 
 6774:     if (ref($curres) && $curres->is_problem()) {
 6775: 	# if the user has asked to not have either hidden
 6776: 	# or 'randomout' controlled resources to be graded
 6777: 	# don't include them
 6778: 	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
 6779: 	    && $curres->randomout) {
 6780: 	    return 0;
 6781: 	}
 6782: 	return 1;
 6783:     }
 6784:     return 0;
 6785: }
 6786: 
 6787: =pod
 6788: 
 6789: =item scantron_process_corrections
 6790: 
 6791:    Gets correction information out of submitted form data and corrects
 6792:    the scanline
 6793: 
 6794: =cut
 6795: 
 6796: sub scantron_process_corrections {
 6797:     my ($r) = @_;
 6798:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 6799:     my ($scanlines,$scan_data)=&scantron_getfile();
 6800:     my $classlist=&Apache::loncoursedata::get_classlist();
 6801:     my $which=$env{'form.scantron_line'};
 6802:     my $line=&scantron_get_line($scanlines,$scan_data,$which);
 6803:     my ($skip,$err,$errmsg);
 6804:     if ($env{'form.scantron_skip_record'}) {
 6805: 	$skip=1;
 6806:     } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
 6807: 	my $newstudent=$env{'form.scantron_username'}.':'.
 6808: 	    $env{'form.scantron_domain'};
 6809: 	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
 6810: 	($line,$err,$errmsg)=
 6811: 	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
 6812: 				     'ID',{'newid'=>$newid,
 6813: 				    'username'=>$env{'form.scantron_username'},
 6814: 				    'domain'=>$env{'form.scantron_domain'}});
 6815:     } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)CODE$/) {
 6816: 	my $resolution=$env{'form.scantron_CODE_resolution'};
 6817: 	my $newCODE;
 6818: 	my %args;
 6819: 	if      ($resolution eq 'use_unfound') {
 6820: 	    $newCODE='use_unfound';
 6821: 	} elsif ($resolution eq 'use_found') {
 6822: 	    $newCODE=$env{'form.scantron_CODE_selectedvalue'};
 6823: 	} elsif ($resolution eq 'use_typed') {
 6824: 	    $newCODE=$env{'form.scantron_CODE_newvalue'};
 6825: 	} elsif ($resolution =~ /^use_closest_(\d+)/) {
 6826: 	    $newCODE=$env{"form.scantron_CODE_closest_$1"};
 6827: 	}
 6828: 	if ($env{'form.scantron_corrections'} eq 'duplicateCODE') {
 6829: 	    $args{'CODE_ignore_dup'}=1;
 6830: 	}
 6831: 	$args{'CODE'}=$newCODE;
 6832: 	($line,$err,$errmsg)=
 6833: 	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
 6834: 				     'CODE',\%args);
 6835:     } elsif ($env{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
 6836: 	foreach my $question (split(',',$env{'form.scantron_questions'})) {
 6837: 	    ($line,$err,$errmsg)=
 6838: 		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
 6839: 					 $which,'answer',
 6840: 					 { 'question'=>$question,
 6841: 		      		   'response'=>$env{"form.scantron_correct_Q_$question"},
 6842:                                    'questionnum'=>$env{"form.scantron_questionnum_Q_$question"}});
 6843: 	    if ($err) { last; }
 6844: 	}
 6845:     }
 6846:     if ($err) {
 6847:         $r->print(
 6848:             '<p class="LC_error">'
 6849:            .&mt('Unable to accept last correction, an error occurred: [_1]',
 6850:                 $errmsg)
 6851:            .'</p>');
 6852:     } else {
 6853: 	&scantron_put_line($scanlines,$scan_data,$which,$line,$skip);
 6854: 	&scantron_putfile($scanlines,$scan_data);
 6855:     }
 6856: }
 6857: 
 6858: =pod
 6859: 
 6860: =item reset_skipping_status
 6861: 
 6862:    Forgets the current set of remember skipped scanlines (and thus
 6863:    reverts back to considering all lines in the
 6864:    scantron_skipped_<filename> file)
 6865: 
 6866: =cut
 6867: 
 6868: sub reset_skipping_status {
 6869:     my ($scanlines,$scan_data)=&scantron_getfile();
 6870:     &scan_data($scan_data,'remember_skipping',undef,1);
 6871:     &scantron_putfile(undef,$scan_data);
 6872: }
 6873: 
 6874: =pod
 6875: 
 6876: =item start_skipping
 6877: 
 6878:    Marks a scanline to be skipped. 
 6879: 
 6880: =cut
 6881: 
 6882: sub start_skipping {
 6883:     my ($scan_data,$i)=@_;
 6884:     my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
 6885:     if ($env{'form.scantron_options_redo'} =~ /^redo_/) {
 6886: 	$remembered{$i}=2;
 6887:     } else {
 6888: 	$remembered{$i}=1;
 6889:     }
 6890:     &scan_data($scan_data,'remember_skipping',join(':',%remembered));
 6891: }
 6892: 
 6893: =pod
 6894: 
 6895: =item should_be_skipped
 6896: 
 6897:    Checks whether a scanline should be skipped.
 6898: 
 6899: =cut
 6900: 
 6901: sub should_be_skipped {
 6902:     my ($scanlines,$scan_data,$i)=@_;
 6903:     if ($env{'form.scantron_options_redo'} !~ /^redo_/) {
 6904: 	# not redoing old skips
 6905: 	if ($scanlines->{'skipped'}[$i]) { return 1; }
 6906: 	return 0;
 6907:     }
 6908:     my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
 6909: 
 6910:     if (exists($remembered{$i}) && $remembered{$i} != 2 ) {
 6911: 	return 0;
 6912:     }
 6913:     return 1;
 6914: }
 6915: 
 6916: =pod
 6917: 
 6918: =item remember_current_skipped
 6919: 
 6920:    Discovers what scanlines are in the scantron_skipped_<filename>
 6921:    file and remembers them into scan_data for later use.
 6922: 
 6923: =cut
 6924: 
 6925: sub remember_current_skipped {
 6926:     my ($scanlines,$scan_data)=&scantron_getfile();
 6927:     my %to_remember;
 6928:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 6929: 	if ($scanlines->{'skipped'}[$i]) {
 6930: 	    $to_remember{$i}=1;
 6931: 	}
 6932:     }
 6933: 
 6934:     &scan_data($scan_data,'remember_skipping',join(':',%to_remember));
 6935:     &scantron_putfile(undef,$scan_data);
 6936: }
 6937: 
 6938: =pod
 6939: 
 6940: =item check_for_error
 6941: 
 6942:     Checks if there was an error when attempting to remove a specific
 6943:     scantron_.. bubblesheet data file. Prints out an error if
 6944:     something went wrong.
 6945: 
 6946: =cut
 6947: 
 6948: sub check_for_error {
 6949:     my ($r,$result)=@_;
 6950:     if ($result ne 'ok' && $result ne 'not_found' ) {
 6951: 	$r->print(&mt("An error occurred ([_1]) when trying to remove the existing corrections.",$result));
 6952:     }
 6953: }
 6954: 
 6955: =pod
 6956: 
 6957: =item scantron_warning_screen
 6958: 
 6959:    Interstitial screen to make sure the operator has selected the
 6960:    correct options before we start the validation phase.
 6961: 
 6962: =cut
 6963: 
 6964: sub scantron_warning_screen {
 6965:     my ($button_text,$symb)=@_;
 6966:     my $title=&Apache::lonnet::gettitle($env{'form.selectpage'});
 6967:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 6968:     my $CODElist;
 6969:     if ($scantron_config{'CODElocation'} &&
 6970: 	$scantron_config{'CODEstart'} &&
 6971: 	$scantron_config{'CODElength'}) {
 6972: 	$CODElist=$env{'form.scantron_CODElist'};
 6973: 	if ($env{'form.scantron_CODElist'} eq '') { $CODElist='<span class="LC_warning">'.&mt('None').'</span>'; }
 6974: 	$CODElist=
 6975: 	    '<tr><td><b>'.&mt('List of CODES to validate against:').'</b></td><td><tt>'.
 6976: 	    $env{'form.scantron_CODElist'}.'</tt></td></tr>';
 6977:     }
 6978:     my $lastbubblepoints;
 6979:     if ($env{'form.scantron_lastbubblepoints'} ne '') {
 6980:         $lastbubblepoints =
 6981:             '<tr><td><b>'.&mt('Hand-graded items: points from last bubble in row').'</b></td><td><tt>'.
 6982:             $env{'form.scantron_lastbubblepoints'}.'</tt></td></tr>';
 6983:     }
 6984:     return ('
 6985: <p>
 6986: <span class="LC_warning">
 6987: '.&mt("Please double check the information below before clicking on '[_1]'",&mt($button_text)).'</span>
 6988: </p>
 6989: <table>
 6990: <tr><td><b>'.&mt('Sequence to be Graded:').'</b></td><td>'.$title.'</td></tr>
 6991: <tr><td><b>'.&mt('Data File that will be used:').'</b></td><td><tt>'.$env{'form.scantron_selectfile'}.'</tt></td></tr>
 6992: '.$CODElist.$lastbubblepoints.'
 6993: </table>
 6994: <p> '.&mt("If this information is correct, please click on '[_1]'.",&mt($button_text)).'<br />
 6995: '.&mt('If something is incorrect, please return to [_1]Grade/Manage/Review Bubblesheets[_2] to start over.','<a href="/adm/grades?symb='.$symb.'&command=scantron_selectphase" class="LC_info">','</a>').'</p>
 6996: 
 6997: <br />
 6998: ');
 6999: }
 7000: 
 7001: =pod
 7002: 
 7003: =item scantron_do_warning
 7004: 
 7005:    Check if the operator has picked something for all required
 7006:    fields. Error out if something is missing.
 7007: 
 7008: =cut
 7009: 
 7010: sub scantron_do_warning {
 7011:     my ($r,$symb)=@_;
 7012:     if (!$symb) {return '';}
 7013:     my $default_form_data=&defaultFormData($symb);
 7014:     $r->print(&scantron_form_start().$default_form_data);
 7015:     if ( $env{'form.selectpage'} eq '' ||
 7016: 	 $env{'form.scantron_selectfile'} eq '' ||
 7017: 	 $env{'form.scantron_format'} eq '' ) {
 7018: 	$r->print("<p>".&mt('You have forgotten to specify some information. Please go Back and try again.')."</p>");
 7019: 	if ( $env{'form.selectpage'} eq '') {
 7020: 	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a Sequence to grade').'</span></p>');
 7021: 	} 
 7022: 	if ( $env{'form.scantron_selectfile'} eq '') {
 7023: 	    $r->print('<p><span class="LC_error">'.&mt("You have not selected a file that contains the student's response data.").'</span></p>');
 7024: 	} 
 7025: 	if ( $env{'form.scantron_format'} eq '') {
 7026: 	    $r->print('<p><span class="LC_error">'.&mt("You have not selected the format of the student's response data.").'</span></p>');
 7027: 	} 
 7028:     } else {
 7029: 	my $warning=&scantron_warning_screen('Grading: Validate Records',$symb);
 7030:         my $bubbledbyhand=&hand_bubble_option();
 7031: 	$r->print('
 7032: '.$warning.$bubbledbyhand.'
 7033: <input type="submit" name="submit" value="'.&mt('Grading: Validate Records').'" />
 7034: <input type="hidden" name="command" value="scantron_validate" />
 7035: ');
 7036:     }
 7037:     $r->print("</form><br />");
 7038:     return '';
 7039: }
 7040: 
 7041: =pod
 7042: 
 7043: =item scantron_form_start
 7044: 
 7045:     html hidden input for remembering all selected grading options
 7046: 
 7047: =cut
 7048: 
 7049: sub scantron_form_start {
 7050:     my ($max_bubble)=@_;
 7051:     my $result= <<SCANTRONFORM;
 7052: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
 7053:   <input type="hidden" name="selectpage" value="$env{'form.selectpage'}" />
 7054:   <input type="hidden" name="scantron_format" value="$env{'form.scantron_format'}" />
 7055:   <input type="hidden" name="scantron_selectfile" value="$env{'form.scantron_selectfile'}" />
 7056:   <input type="hidden" name="scantron_maxbubble" value="$max_bubble" />
 7057:   <input type="hidden" name="scantron_CODElist" value="$env{'form.scantron_CODElist'}" />
 7058:   <input type="hidden" name="scantron_CODEunique" value="$env{'form.scantron_CODEunique'}" />
 7059:   <input type="hidden" name="scantron_options_redo" value="$env{'form.scantron_options_redo'}" />
 7060:   <input type="hidden" name="scantron_options_ignore" value="$env{'form.scantron_options_ignore'}" />
 7061:   <input type="hidden" name="scantron_options_hidden" value="$env{'form.scantron_options_hidden'}" />
 7062: SCANTRONFORM
 7063: 
 7064:   my $line = 0;
 7065:     while (defined($env{"form.scantron.bubblelines.$line"})) {
 7066:        my $chunk =
 7067: 	   '<input type="hidden" name="scantron.bubblelines.'.$line.'" value="'.$env{"form.scantron.bubblelines.$line"}.'" />'."\n";
 7068:        $chunk .=
 7069: 	   '<input type="hidden" name="scantron.first_bubble_line.'.$line.'" value="'.$env{"form.scantron.first_bubble_line.$line"}.'" />'."\n";
 7070:        $chunk .= 
 7071:            '<input type="hidden" name="scantron.sub_bubblelines.'.$line.'" value="'.$env{"form.scantron.sub_bubblelines.$line"}.'" />'."\n";
 7072:        $chunk .=
 7073:            '<input type="hidden" name="scantron.responsetype.'.$line.'" value="'.$env{"form.scantron.responsetype.$line"}.'" />'."\n";
 7074:        $chunk .=
 7075:            '<input type="hidden" name="scantron.residpart.'.$line.'" value="'.$env{"form.scantron.residpart.$line"}.'" />'."\n";
 7076:        $result .= $chunk;
 7077:        $line++;
 7078:     }
 7079:     return $result;
 7080: }
 7081: 
 7082: =pod
 7083: 
 7084: =item scantron_validate_file
 7085: 
 7086:     Dispatch routine for doing validation of a bubblesheet data file.
 7087: 
 7088:     Also processes any necessary information resets that need to
 7089:     occur before validation begins (ignore previous corrections,
 7090:     restarting the skipped records processing)
 7091: 
 7092: =cut
 7093: 
 7094: sub scantron_validate_file {
 7095:     my ($r,$symb) = @_;
 7096:     if (!$symb) {return '';}
 7097:     my $default_form_data=&defaultFormData($symb);
 7098:     
 7099:     # do the detection of only doing skipped records first before we delete
 7100:     # them when doing the corrections reset
 7101:     if ($env{'form.scantron_options_redo'} ne 'redo_skipped_ready') {
 7102: 	&reset_skipping_status();
 7103:     }
 7104:     if ($env{'form.scantron_options_redo'} eq 'redo_skipped') {
 7105: 	&remember_current_skipped();
 7106: 	$env{'form.scantron_options_redo'}='redo_skipped_ready';
 7107:     }
 7108: 
 7109:     if ($env{'form.scantron_options_ignore'} eq 'ignore_corrections') {
 7110: 	&check_for_error($r,&scantron_remove_file('corrected'));
 7111: 	&check_for_error($r,&scantron_remove_file('skipped'));
 7112: 	&check_for_error($r,&scantron_remove_scan_data());
 7113: 	$env{'form.scantron_options_ignore'}='done';
 7114:     }
 7115: 
 7116:     if ($env{'form.scantron_corrections'}) {
 7117: 	&scantron_process_corrections($r);
 7118:     }
 7119:     $r->print('<p>'.&mt('Gathering necessary information.').'</p>');$r->rflush();
 7120:     #get the student pick code ready
 7121:     $r->print(&Apache::loncommon::studentbrowser_javascript());
 7122:     my $nav_error;
 7123:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 7124:     my $max_bubble=&scantron_get_maxbubble(\$nav_error,\%scantron_config);
 7125:     if ($nav_error) {
 7126:         $r->print(&navmap_errormsg());
 7127:         return '';
 7128:     }
 7129:     my $result=&scantron_form_start($max_bubble).$default_form_data;
 7130:     if ($env{'form.scantron_lastbubblepoints'} ne '') {
 7131:         $result .= '<input type="hidden" name="scantron_lastbubblepoints" value="'.$env{'form.scantron_lastbubblepoints'}.'" />';
 7132:     }
 7133:     $r->print($result);
 7134:     
 7135:     my @validate_phases=( 'sequence',
 7136: 			  'ID',
 7137: 			  'CODE',
 7138: 			  'doublebubble',
 7139: 			  'missingbubbles');
 7140:     if (!$env{'form.validatepass'}) {
 7141: 	$env{'form.validatepass'} = 0;
 7142:     }
 7143:     my $currentphase=$env{'form.validatepass'};
 7144: 
 7145: 
 7146:     my $stop=0;
 7147:     while (!$stop && $currentphase < scalar(@validate_phases)) {
 7148: 	$r->print(&mt('Validating '.$validate_phases[$currentphase]).'<br />');
 7149: 	$r->rflush();
 7150:      
 7151: 	my $which="scantron_validate_".$validate_phases[$currentphase];
 7152: 	{
 7153: 	    no strict 'refs';
 7154: 	    ($stop,$currentphase)=&$which($r,$currentphase);
 7155: 	}
 7156:     }
 7157:     if (!$stop) {
 7158: 	my $warning=&scantron_warning_screen('Start Grading',$symb);
 7159: 	$r->print(&mt('Validation process complete.').'<br />'.
 7160:                   $warning.
 7161:                   &mt('Perform verification for each student after storage of submissions?').
 7162:                   '&nbsp;<span class="LC_nobreak"><label>'.
 7163:                   '<input type="radio" name="verifyrecord" value="1" />'.&mt('Yes').'</label>'.
 7164:                   ('&nbsp;'x3).'<label>'.
 7165:                   '<input type="radio" name="verifyrecord" value="0" checked="checked" />'.&mt('No').
 7166:                   '</label></span><br />'.
 7167:                   &mt('Grading will take longer if you use verification.').'<br />'.
 7168:                   &mt('Otherwise, Grade/Manage/Review Bubblesheets [_1] Review bubblesheet data can be used once grading is complete.','&raquo;').'<br /><br />'.
 7169:                   '<input type="submit" name="submit" value="'.&mt('Start Grading').'" />'.
 7170:                   '<input type="hidden" name="command" value="scantron_process" />'."\n");
 7171:     } else {
 7172: 	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
 7173: 	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
 7174:     }
 7175:     if ($stop) {
 7176: 	if ($validate_phases[$currentphase] eq 'sequence') {
 7177: 	    $r->print('<input type="submit" name="submit" value="'.&mt('Ignore').' &rarr; " />');
 7178: 	    $r->print(' '.&mt('this error').' <br />');
 7179: 
 7180: 	    $r->print('<p>'.&mt('Or return to [_1]Grade/Manage/Review Bubblesheets[_2] to start over.','<a href="/adm/grades?symb='.$symb.'&command=scantron_selectphase" class="LC_info">','</a>').'</p>');
 7181: 	} else {
 7182:             if ($validate_phases[$currentphase] eq 'doublebubble' || $validate_phases[$currentphase] eq 'missingbubbles') {
 7183: 	        $r->print('<input type="button" name="submitbutton" value="'.&mt('Continue').' &rarr;" onclick="javascript:verify_bubble_radio(this.form)" />');
 7184:             } else {
 7185:                 $r->print('<input type="submit" name="submit" value="'.&mt('Continue').' &rarr;" />');
 7186:             }
 7187: 	    $r->print(' '.&mt('using corrected info').' <br />');
 7188: 	    $r->print("<input type='submit' value='".&mt("Skip")."' name='scantron_skip_record' />");
 7189: 	    $r->print(" ".&mt("this scanline saving it for later."));
 7190: 	}
 7191:     }
 7192:     $r->print(" </form><br />");
 7193:     return '';
 7194: }
 7195: 
 7196: 
 7197: =pod
 7198: 
 7199: =item scantron_remove_file
 7200: 
 7201:    Removes the requested bubblesheet data file, makes sure that
 7202:    scantron_original_<filename> is never removed
 7203: 
 7204: 
 7205: =cut
 7206: 
 7207: sub scantron_remove_file {
 7208:     my ($which)=@_;
 7209:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7210:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7211:     my $file='scantron_';
 7212:     if ($which eq 'corrected' || $which eq 'skipped') {
 7213: 	$file.=$which.'_';
 7214:     } else {
 7215: 	return 'refused';
 7216:     }
 7217:     $file.=$env{'form.scantron_selectfile'};
 7218:     return &Apache::lonnet::removeuserfile($cname,$cdom,$file);
 7219: }
 7220: 
 7221: 
 7222: =pod
 7223: 
 7224: =item scantron_remove_scan_data
 7225: 
 7226:    Removes all scan_data correction for the requested bubblesheet
 7227:    data file.  (In the case that both the are doing skipped records we need
 7228:    to remember the old skipped lines for the time being so that element
 7229:    persists for a while.)
 7230: 
 7231: =cut
 7232: 
 7233: sub scantron_remove_scan_data {
 7234:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7235:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7236:     my @keys=&Apache::lonnet::getkeys('nohist_scantrondata',$cdom,$cname);
 7237:     my @todelete;
 7238:     my $filename=$env{'form.scantron_selectfile'};
 7239:     foreach my $key (@keys) {
 7240: 	if ($key=~/^\Q$filename\E_/) {
 7241: 	    if ($env{'form.scantron_options_redo'} eq 'redo_skipped_ready' &&
 7242: 		$key=~/remember_skipping/) {
 7243: 		next;
 7244: 	    }
 7245: 	    push(@todelete,$key);
 7246: 	}
 7247:     }
 7248:     my $result;
 7249:     if (@todelete) {
 7250: 	$result = &Apache::lonnet::del('nohist_scantrondata',
 7251: 				       \@todelete,$cdom,$cname);
 7252:     } else {
 7253: 	$result = 'ok';
 7254:     }
 7255:     return $result;
 7256: }
 7257: 
 7258: 
 7259: =pod
 7260: 
 7261: =item scantron_getfile
 7262: 
 7263:     Fetches the requested bubblesheet data file (all 3 versions), and
 7264:     the scan_data hash
 7265:   
 7266:   Arguments:
 7267:     None
 7268: 
 7269:   Returns:
 7270:     2 hash references
 7271: 
 7272:      - first one has 
 7273:          orig      -
 7274:          corrected -
 7275:          skipped   -  each of which points to an array ref of the specified
 7276:                       file broken up into individual lines
 7277:          count     - number of scanlines
 7278:  
 7279:      - second is the scan_data hash possible keys are
 7280:        ($number refers to scanline numbered $number and thus the key affects
 7281:         only that scanline
 7282:         $bubline refers to the specific bubble line element and the aspects
 7283:         refers to that specific bubble line element)
 7284: 
 7285:        $number.user - username:domain to use
 7286:        $number.CODE_ignore_dup 
 7287:                     - ignore the duplicate CODE error 
 7288:        $number.useCODE
 7289:                     - use the CODE in the scanline as is
 7290:        $number.no_bubble.$bubline
 7291:                     - it is valid that there is no bubbled in bubble
 7292:                       at $number $bubline
 7293:        remember_skipping
 7294:                     - a frozen hash containing keys of $number and values
 7295:                       of either 
 7296:                         1 - we are on a 'do skipped records pass' and plan
 7297:                             on processing this line
 7298:                         2 - we are on a 'do skipped records pass' and this
 7299:                             scanline has been marked to skip yet again
 7300: 
 7301: =cut
 7302: 
 7303: sub scantron_getfile {
 7304:     #FIXME really would prefer a scantron directory
 7305:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7306:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7307:     my $lines;
 7308:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 7309: 		       'scantron_orig_'.$env{'form.scantron_selectfile'});
 7310:     my %scanlines;
 7311:     $scanlines{'orig'}=[(split("\n",$lines,-1))];
 7312:     my $temp=$scanlines{'orig'};
 7313:     $scanlines{'count'}=$#$temp;
 7314: 
 7315:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 7316: 		       'scantron_corrected_'.$env{'form.scantron_selectfile'});
 7317:     if ($lines eq '-1') {
 7318: 	$scanlines{'corrected'}=[];
 7319:     } else {
 7320: 	$scanlines{'corrected'}=[(split("\n",$lines,-1))];
 7321:     }
 7322:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 7323: 		       'scantron_skipped_'.$env{'form.scantron_selectfile'});
 7324:     if ($lines eq '-1') {
 7325: 	$scanlines{'skipped'}=[];
 7326:     } else {
 7327: 	$scanlines{'skipped'}=[(split("\n",$lines,-1))];
 7328:     }
 7329:     my @tmp=&Apache::lonnet::dump('nohist_scantrondata',$cdom,$cname);
 7330:     if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
 7331:     my %scan_data = @tmp;
 7332:     return (\%scanlines,\%scan_data);
 7333: }
 7334: 
 7335: =pod
 7336: 
 7337: =item lonnet_putfile
 7338: 
 7339:    Wrapper routine to call &Apache::lonnet::finishuserfileupload
 7340: 
 7341:  Arguments:
 7342:    $contents - data to store
 7343:    $filename - filename to store $contents into
 7344: 
 7345:  Returns:
 7346:    result value from &Apache::lonnet::finishuserfileupload
 7347: 
 7348: =cut
 7349: 
 7350: sub lonnet_putfile {
 7351:     my ($contents,$filename)=@_;
 7352:     my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7353:     my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7354:     $env{'form.sillywaytopassafilearound'}=$contents;
 7355:     &Apache::lonnet::finishuserfileupload($docuname,$docudom,'sillywaytopassafilearound',$filename);
 7356: 
 7357: }
 7358: 
 7359: =pod
 7360: 
 7361: =item scantron_putfile
 7362: 
 7363:     Stores the current version of the bubblesheet data files, and the
 7364:     scan_data hash. (Does not modify the original version only the
 7365:     corrected and skipped versions.
 7366: 
 7367:  Arguments:
 7368:     $scanlines - hash ref that looks like the first return value from
 7369:                  &scantron_getfile()
 7370:     $scan_data - hash ref that looks like the second return value from
 7371:                  &scantron_getfile()
 7372: 
 7373: =cut
 7374: 
 7375: sub scantron_putfile {
 7376:     my ($scanlines,$scan_data) = @_;
 7377:     #FIXME really would prefer a scantron directory
 7378:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7379:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7380:     if ($scanlines) {
 7381: 	my $prefix='scantron_';
 7382: # no need to update orig, shouldn't change
 7383: #   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
 7384: #		    $env{'form.scantron_selectfile'});
 7385: 	&lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
 7386: 			$prefix.'corrected_'.
 7387: 			$env{'form.scantron_selectfile'});
 7388: 	&lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
 7389: 			$prefix.'skipped_'.
 7390: 			$env{'form.scantron_selectfile'});
 7391:     }
 7392:     &Apache::lonnet::put('nohist_scantrondata',$scan_data,$cdom,$cname);
 7393: }
 7394: 
 7395: =pod
 7396: 
 7397: =item scantron_get_line
 7398: 
 7399:    Returns the correct version of the scanline
 7400: 
 7401:  Arguments:
 7402:     $scanlines - hash ref that looks like the first return value from
 7403:                  &scantron_getfile()
 7404:     $scan_data - hash ref that looks like the second return value from
 7405:                  &scantron_getfile()
 7406:     $i         - number of the requested line (starts at 0)
 7407: 
 7408:  Returns:
 7409:    A scanline, (either the original or the corrected one if it
 7410:    exists), or undef if the requested scanline should be
 7411:    skipped. (Either because it's an skipped scanline, or it's an
 7412:    unskipped scanline and we are not doing a 'do skipped scanlines'
 7413:    pass.
 7414: 
 7415: =cut
 7416: 
 7417: sub scantron_get_line {
 7418:     my ($scanlines,$scan_data,$i)=@_;
 7419:     if (&should_be_skipped($scanlines,$scan_data,$i)) { return undef; }
 7420:     #if ($scanlines->{'skipped'}[$i]) { return undef; }
 7421:     if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
 7422:     return $scanlines->{'orig'}[$i]; 
 7423: }
 7424: 
 7425: =pod
 7426: 
 7427: =item scantron_todo_count
 7428: 
 7429:     Counts the number of scanlines that need processing.
 7430: 
 7431:  Arguments:
 7432:     $scanlines - hash ref that looks like the first return value from
 7433:                  &scantron_getfile()
 7434:     $scan_data - hash ref that looks like the second return value from
 7435:                  &scantron_getfile()
 7436: 
 7437:  Returns:
 7438:     $count - number of scanlines to process
 7439: 
 7440: =cut
 7441: 
 7442: sub get_todo_count {
 7443:     my ($scanlines,$scan_data)=@_;
 7444:     my $count=0;
 7445:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 7446: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7447: 	if ($line=~/^[\s\cz]*$/) { next; }
 7448: 	$count++;
 7449:     }
 7450:     return $count;
 7451: }
 7452: 
 7453: =pod
 7454: 
 7455: =item scantron_put_line
 7456: 
 7457:     Updates the 'corrected' or 'skipped' versions of the bubblesheet
 7458:     data file.
 7459: 
 7460:  Arguments:
 7461:     $scanlines - hash ref that looks like the first return value from
 7462:                  &scantron_getfile()
 7463:     $scan_data - hash ref that looks like the second return value from
 7464:                  &scantron_getfile()
 7465:     $i         - line number to update
 7466:     $newline   - contents of the updated scanline
 7467:     $skip      - if true make the line for skipping and update the
 7468:                  'skipped' file
 7469: 
 7470: =cut
 7471: 
 7472: sub scantron_put_line {
 7473:     my ($scanlines,$scan_data,$i,$newline,$skip)=@_;
 7474:     if ($skip) {
 7475: 	$scanlines->{'skipped'}[$i]=$newline;
 7476: 	&start_skipping($scan_data,$i);
 7477: 	return;
 7478:     }
 7479:     $scanlines->{'corrected'}[$i]=$newline;
 7480: }
 7481: 
 7482: =pod
 7483: 
 7484: =item scantron_clear_skip
 7485: 
 7486:    Remove a line from the 'skipped' file
 7487: 
 7488:  Arguments:
 7489:     $scanlines - hash ref that looks like the first return value from
 7490:                  &scantron_getfile()
 7491:     $scan_data - hash ref that looks like the second return value from
 7492:                  &scantron_getfile()
 7493:     $i         - line number to update
 7494: 
 7495: =cut
 7496: 
 7497: sub scantron_clear_skip {
 7498:     my ($scanlines,$scan_data,$i)=@_;
 7499:     if (exists($scanlines->{'skipped'}[$i])) {
 7500: 	undef($scanlines->{'skipped'}[$i]);
 7501: 	return 1;
 7502:     }
 7503:     return 0;
 7504: }
 7505: 
 7506: =pod
 7507: 
 7508: =item scantron_filter_not_exam
 7509: 
 7510:    Filter routine used by &Apache::lonnavmaps::retrieveResources(), to
 7511:    filter out resources that are not marked as 'exam' mode
 7512: 
 7513: =cut
 7514: 
 7515: sub scantron_filter_not_exam {
 7516:     my ($curres)=@_;
 7517:     
 7518:     if (ref($curres) && $curres->is_problem() && !$curres->is_exam()) {
 7519: 	# if the user has asked to not have either hidden
 7520: 	# or 'randomout' controlled resources to be graded
 7521: 	# don't include them
 7522: 	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
 7523: 	    && $curres->randomout) {
 7524: 	    return 0;
 7525: 	}
 7526: 	return 1;
 7527:     }
 7528:     return 0;
 7529: }
 7530: 
 7531: =pod
 7532: 
 7533: =item scantron_validate_sequence
 7534: 
 7535:     Validates the selected sequence, checking for resource that are
 7536:     not set to exam mode.
 7537: 
 7538: =cut
 7539: 
 7540: sub scantron_validate_sequence {
 7541:     my ($r,$currentphase) = @_;
 7542: 
 7543:     my $navmap=Apache::lonnavmaps::navmap->new();
 7544:     unless (ref($navmap)) {
 7545:         $r->print(&navmap_errormsg());
 7546:         return (1,$currentphase);
 7547:     }
 7548:     my (undef,undef,$sequence)=
 7549: 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 7550: 
 7551:     my $map=$navmap->getResourceByUrl($sequence);
 7552: 
 7553:     $r->print('<input type="hidden" name="validate_sequence_exam"
 7554:                                     value="ignore" />');
 7555:     if ($env{'form.validate_sequence_exam'} ne 'ignore') {
 7556: 	my @resources=
 7557: 	    $navmap->retrieveResources($map,\&scantron_filter_not_exam,1,0);
 7558: 	if (@resources) {
 7559: 	    $r->print(
 7560:                 '<p class="LC_warning">'
 7561:                .&mt('Some resources in the sequence currently are not set to'
 7562:                    .' bubblesheet exam mode. Grading these resources currently may not'
 7563:                    .' work correctly.')
 7564:                .'</p>'
 7565:             );
 7566: 	    return (1,$currentphase);
 7567: 	}
 7568:     }
 7569: 
 7570:     return (0,$currentphase+1);
 7571: }
 7572: 
 7573: 
 7574: 
 7575: sub scantron_validate_ID {
 7576:     my ($r,$currentphase) = @_;
 7577:     
 7578:     #get student info
 7579:     my $classlist=&Apache::loncoursedata::get_classlist();
 7580:     my %idmap=&username_to_idmap($classlist);
 7581: 
 7582:     #get scantron line setup
 7583:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 7584:     my ($scanlines,$scan_data)=&scantron_getfile();
 7585: 
 7586:     my $nav_error;
 7587:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the bubble_lines.. array.
 7588:     if ($nav_error) {
 7589:         $r->print(&navmap_errormsg());
 7590:         return(1,$currentphase);
 7591:     }
 7592: 
 7593:     my %found=('ids'=>{},'usernames'=>{});
 7594:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 7595: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7596: 	if ($line=~/^[\s\cz]*$/) { next; }
 7597: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 7598: 						 $scan_data);
 7599: 	my $id=$$scan_record{'scantron.ID'};
 7600: 	my $found;
 7601: 	foreach my $checkid (keys(%idmap)) {
 7602: 	    if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
 7603: 	}
 7604: 	if ($found) {
 7605: 	    my $username=$idmap{$found};
 7606: 	    if ($found{'ids'}{$found}) {
 7607: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 7608: 					 $line,'duplicateID',$found);
 7609: 		return(1,$currentphase);
 7610: 	    } elsif ($found{'usernames'}{$username}) {
 7611: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 7612: 					 $line,'duplicateID',$username);
 7613: 		return(1,$currentphase);
 7614: 	    }
 7615: 	    #FIXME store away line we previously saw the ID on to use above
 7616: 	    $found{'ids'}{$found}++;
 7617: 	    $found{'usernames'}{$username}++;
 7618: 	} else {
 7619: 	    if ($id =~ /^\s*$/) {
 7620: 		my $username=&scan_data($scan_data,"$i.user");
 7621: 		if (defined($username) && $found{'usernames'}{$username}) {
 7622: 		    &scantron_get_correction($r,$i,$scan_record,
 7623: 					     \%scantron_config,
 7624: 					     $line,'duplicateID',$username);
 7625: 		    return(1,$currentphase);
 7626: 		} elsif (!defined($username)) {
 7627: 		    &scantron_get_correction($r,$i,$scan_record,
 7628: 					     \%scantron_config,
 7629: 					     $line,'incorrectID');
 7630: 		    return(1,$currentphase);
 7631: 		}
 7632: 		$found{'usernames'}{$username}++;
 7633: 	    } else {
 7634: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 7635: 					 $line,'incorrectID');
 7636: 		return(1,$currentphase);
 7637: 	    }
 7638: 	}
 7639:     }
 7640: 
 7641:     return (0,$currentphase+1);
 7642: }
 7643: 
 7644: 
 7645: sub scantron_get_correction {
 7646:     my ($r,$i,$scan_record,$scan_config,$line,$error,$arg,
 7647:         $randomorder,$randompick,$respnumlookup,$startline)=@_;
 7648: #FIXME in the case of a duplicated ID the previous line, probably need
 7649: #to show both the current line and the previous one and allow skipping
 7650: #the previous one or the current one
 7651: 
 7652:     if ( $$scan_record{'scantron.PaperID'} =~ /\S/) {
 7653:         $r->print(
 7654:             '<p class="LC_warning">'
 7655:            .&mt('An error was detected ([_1]) for PaperID [_2]',
 7656:                 "<b>$error</b>",
 7657:                 '<tt>'.$$scan_record{'scantron.PaperID'}.'</tt>')
 7658:            ."</p> \n");
 7659:     } else {
 7660:         $r->print(
 7661:             '<p class="LC_warning">'
 7662:            .&mt('An error was detected ([_1]) in scanline [_2] [_3]',
 7663:                 "<b>$error</b>", $i, "<pre>$line</pre>")
 7664:            ."</p> \n");
 7665:     }
 7666:     my $message =
 7667:         '<p>'
 7668:        .&mt('The ID on the form is [_1]',
 7669:             "<tt>$$scan_record{'scantron.ID'}</tt>")
 7670:        .'<br />'
 7671:        .&mt('The name on the paper is [_1], [_2]',
 7672:             $$scan_record{'scantron.LastName'},
 7673:             $$scan_record{'scantron.FirstName'})
 7674:        .'</p>';
 7675: 
 7676:     $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
 7677:     $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
 7678:                            # Array populated for doublebubble or
 7679:     my @lines_to_correct;  # missingbubble errors to build javascript
 7680:                            # to validate radio button checking   
 7681: 
 7682:     if ($error =~ /ID$/) {
 7683: 	if ($error eq 'incorrectID') {
 7684:             $r->print('<p class="LC_warning">'.&mt("The encoded ID is not in the classlist").
 7685: 		      "</p>\n");
 7686: 	} elsif ($error eq 'duplicateID') {
 7687:             $r->print('<p class="LC_warning">'.&mt("The encoded ID has also been used by a previous paper [_1]",$arg)."</p>\n");
 7688: 	}
 7689: 	$r->print($message);
 7690: 	$r->print("<p>".&mt("How should I handle this?")." <br /> \n");
 7691: 	$r->print("\n<ul><li> ");
 7692: 	#FIXME it would be nice if this sent back the user ID and
 7693: 	#could do partial userID matches
 7694: 	$r->print(&Apache::loncommon::selectstudent_link('scantronupload',
 7695: 				       'scantron_username','scantron_domain'));
 7696: 	$r->print(": <input type='text' name='scantron_username' value='' />");
 7697: 	$r->print("\n:\n".
 7698: 		 &Apache::loncommon::select_dom_form($env{'request.role.domain'},'scantron_domain'));
 7699: 
 7700: 	$r->print('</li>');
 7701:     } elsif ($error =~ /CODE$/) {
 7702: 	if ($error eq 'incorrectCODE') {
 7703: 	    $r->print('<p class="LC_warning">'.&mt("The encoded CODE is not in the list of possible CODEs.")."</p>\n");
 7704: 	} elsif ($error eq 'duplicateCODE') {
 7705: 	    $r->print('<p class="LC_warning">'.&mt("The encoded CODE has also been used by a previous paper [_1], and CODEs are supposed to be unique.",join(', ',@{$arg}))."</p>\n");
 7706: 	}
 7707: 	$r->print("<p>".&mt('The CODE on the form is [_1]',
 7708: 			    "<tt>'$$scan_record{'scantron.CODE'}'</tt>")
 7709:                  ."</p>\n");
 7710: 	$r->print($message);
 7711: 	$r->print("<p>".&mt("How should I handle this?")."</p>\n");
 7712: 	$r->print("\n<br /> ");
 7713: 	my $i=0;
 7714: 	if ($error eq 'incorrectCODE' 
 7715: 	    && $$scan_record{'scantron.CODE'}=~/\S/ ) {
 7716: 	    my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
 7717: 	    if ($closest > 0) {
 7718: 		foreach my $testcode (@{$closest}) {
 7719: 		    my $checked='';
 7720: 		    if (!$i) { $checked=' checked="checked"'; }
 7721: 		    $r->print("
 7722:    <label>
 7723:        <input type='radio' name='scantron_CODE_resolution' value='use_closest_$i'$checked />
 7724:        ".&mt("Use the similar CODE [_1] instead.",
 7725: 	    "<b><tt>".$testcode."</tt></b>")."
 7726:     </label>
 7727:     <input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
 7728: 		    $r->print("\n<br />");
 7729: 		    $i++;
 7730: 		}
 7731: 	    }
 7732: 	}
 7733: 	if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
 7734: 	    my $checked; if (!$i) { $checked=' checked="checked"'; }
 7735: 	    $r->print("
 7736:     <label>
 7737:         <input type='radio' name='scantron_CODE_resolution' value='use_unfound'$checked />
 7738:        ".&mt("Use the CODE [_1] that was on the paper, ignoring the error.",
 7739: 	     "<b><tt>".$$scan_record{'scantron.CODE'}."</tt></b>")."
 7740:     </label>");
 7741: 	    $r->print("\n<br />");
 7742: 	}
 7743: 
 7744: 	$r->print(&Apache::lonhtmlcommon::scripttag(<<ENDSCRIPT));
 7745: function change_radio(field) {
 7746:     var slct=document.scantronupload.scantron_CODE_resolution;
 7747:     var i;
 7748:     for (i=0;i<slct.length;i++) {
 7749:         if (slct[i].value==field) { slct[i].checked=true; }
 7750:     }
 7751: }
 7752: ENDSCRIPT
 7753: 	my $href="/adm/pickcode?".
 7754: 	   "form=".&escape("scantronupload").
 7755: 	   "&scantron_format=".&escape($env{'form.scantron_format'}).
 7756: 	   "&scantron_CODElist=".&escape($env{'form.scantron_CODElist'}).
 7757: 	   "&curCODE=".&escape($$scan_record{'scantron.CODE'}).
 7758: 	   "&scantron_selectfile=".&escape($env{'form.scantron_selectfile'});
 7759: 	if ($env{'form.scantron_CODElist'} =~ /\S/) { 
 7760: 	    $r->print("
 7761:     <label>
 7762:        <input type='radio' name='scantron_CODE_resolution' value='use_found' />
 7763:        ".&mt("[_1]Select[_2] a CODE from the list of all CODEs and use it.",
 7764: 	     "<a target='_blank' href='$href'>","</a>")."
 7765:     </label> 
 7766:     ".&mt("Selected CODE is [_1]",'<input readonly="readonly" type="text" size="8" name="scantron_CODE_selectedvalue" onfocus="javascript:change_radio(\'use_found\')" onchange="javascript:change_radio(\'use_found\')" />'));
 7767: 	    $r->print("\n<br />");
 7768: 	}
 7769: 	$r->print("
 7770:     <label>
 7771:        <input type='radio' name='scantron_CODE_resolution' value='use_typed' />
 7772:        ".&mt("Use [_1] as the CODE.",
 7773: 	     "</label><input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" />"));
 7774: 	$r->print("\n<br /><br />");
 7775:     } elsif ($error eq 'doublebubble') {
 7776: 	$r->print('<p class="LC_warning">'.&mt("There have been multiple bubbles scanned for some question(s)")."</p>\n");
 7777: 
 7778: 	# The form field scantron_questions is acutally a list of line numbers.
 7779: 	# represented by this form so:
 7780: 
 7781: 	my $line_list = &questions_to_line_list($arg,$randomorder,$randompick,
 7782:                                                 $respnumlookup,$startline);
 7783: 
 7784: 	$r->print('<input type="hidden" name="scantron_questions" value="'.
 7785: 		  $line_list.'" />');
 7786: 	$r->print($message);
 7787: 	$r->print("<p>".&mt("Please indicate which bubble should be used for grading")."</p>");
 7788: 	foreach my $question (@{$arg}) {
 7789: 	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
 7790:                                                    $scan_record, $error,
 7791:                                                    $randomorder,$randompick,
 7792:                                                    $respnumlookup,$startline);
 7793:             push(@lines_to_correct,@linenums);
 7794: 	}
 7795:         $r->print(&verify_bubbles_checked(@lines_to_correct));
 7796:     } elsif ($error eq 'missingbubble') {
 7797: 	$r->print('<p class="LC_warning">'.&mt("There have been [_1]no[_2] bubbles scanned for some question(s)",'<b>','</b>')."</p>\n");
 7798: 	$r->print($message);
 7799: 	$r->print("<p>".&mt("Please indicate which bubble should be used for grading.")."</p>");
 7800: 	$r->print(&mt("Some questions have no scanned bubbles.")."\n");
 7801: 
 7802: 	# The form field scantron_questions is actually a list of line numbers not
 7803: 	# a list of question numbers. Therefore:
 7804: 	#
 7805: 
 7806: 	my $line_list = &questions_to_line_list($arg,$randomorder,$randompick,
 7807:                                                 $respnumlookup,$startline);
 7808: 
 7809: 	$r->print('<input type="hidden" name="scantron_questions" value="'.
 7810: 		  $line_list.'" />');
 7811: 	foreach my $question (@{$arg}) {
 7812: 	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
 7813:                                                    $scan_record, $error,
 7814:                                                    $randomorder,$randompick,
 7815:                                                    $respnumlookup,$startline);
 7816:             push(@lines_to_correct,@linenums);
 7817: 	}
 7818:         $r->print(&verify_bubbles_checked(@lines_to_correct));
 7819:     } else {
 7820: 	$r->print("\n<ul>");
 7821:     }
 7822:     $r->print("\n</li></ul>");
 7823: }
 7824: 
 7825: sub verify_bubbles_checked {
 7826:     my (@ansnums) = @_;
 7827:     my $ansnumstr = join('","',@ansnums);
 7828:     my $warning = &mt("A bubble or 'No bubble' selection has not been made for one or more lines.");
 7829:     &js_escape(\$warning);
 7830:     my $output = &Apache::lonhtmlcommon::scripttag((<<ENDSCRIPT));
 7831: function verify_bubble_radio(form) {
 7832:     var ansnumArray = new Array ("$ansnumstr");
 7833:     var need_bubble_count = 0;
 7834:     for (var i=0; i<ansnumArray.length; i++) {
 7835:         if (form.elements["scantron_correct_Q_"+ansnumArray[i]].length > 1) {
 7836:             var bubble_picked = 0; 
 7837:             for (var j=0; j<form.elements["scantron_correct_Q_"+ansnumArray[i]].length; j++) {
 7838:                 if (form.elements["scantron_correct_Q_"+ansnumArray[i]][j].checked == true) {
 7839:                     bubble_picked = 1;
 7840:                 }
 7841:             }
 7842:             if (bubble_picked == 0) {
 7843:                 need_bubble_count ++;
 7844:             }
 7845:         }
 7846:     }
 7847:     if (need_bubble_count) {
 7848:         alert("$warning");
 7849:         return;
 7850:     }
 7851:     form.submit(); 
 7852: }
 7853: ENDSCRIPT
 7854:     return $output;
 7855: }
 7856: 
 7857: =pod
 7858: 
 7859: =item  questions_to_line_list
 7860: 
 7861: Converts a list of questions into a string of comma separated
 7862: line numbers in the answer sheet used by the questions.  This is
 7863: used to fill in the scantron_questions form field.
 7864: 
 7865:   Arguments:
 7866:      questions    - Reference to an array of questions.
 7867:      randomorder  - True if randomorder in use.
 7868:      randompick   - True if randompick in use.
 7869:      respnumlookup - Reference to HASH mapping question numbers in bubble lines
 7870:                      for current line to question number used for same question
 7871:                      in "Master Seqence" (as seen by Course Coordinator).
 7872:      startline    - Reference to hash where key is question number (0 is first)
 7873:                     and key is number of first bubble line for current student
 7874:                     or code-based randompick and/or randomorder.
 7875: 
 7876: =cut
 7877: 
 7878: 
 7879: sub questions_to_line_list {
 7880:     my ($questions,$randomorder,$randompick,$respnumlookup,$startline) = @_;
 7881:     my @lines;
 7882: 
 7883:     foreach my $item (@{$questions}) {
 7884:         my $question = $item;
 7885:         my ($first,$count,$last);
 7886:         if ($item =~ /^(\d+)\.(\d+)$/) {
 7887:             $question = $1;
 7888:             my $subquestion = $2;
 7889:             my $responsenum = $question-1;
 7890:             if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7891:                 $responsenum = $respnumlookup->{$question-1};
 7892:                 if (ref($startline) eq 'HASH') {
 7893:                     $first = $startline->{$question-1} + 1;
 7894:                 }
 7895:             } else {
 7896:                 $first = $first_bubble_line{$responsenum} + 1;
 7897:             }
 7898:             my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
 7899:             my $subcount = 1;
 7900:             while ($subcount<$subquestion) {
 7901:                 $first += $subans[$subcount-1];
 7902:                 $subcount ++;
 7903:             }
 7904:             $count = $subans[$subquestion-1];
 7905:         } else {
 7906:             my $responsenum = $question-1;
 7907:             if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7908:                 $responsenum = $respnumlookup->{$question-1};
 7909:                 if (ref($startline) eq 'HASH') {
 7910:                     $first = $startline->{$question-1} + 1;
 7911:                 }
 7912:             } else {
 7913:                 $first = $first_bubble_line{$responsenum} + 1;
 7914:             }
 7915: 	    $count   = $bubble_lines_per_response{$responsenum};
 7916:         }
 7917:         $last = $first+$count-1;
 7918:         push(@lines, ($first..$last));
 7919:     }
 7920:     return join(',', @lines);
 7921: }
 7922: 
 7923: =pod 
 7924: 
 7925: =item prompt_for_corrections
 7926: 
 7927: Prompts for a potentially multiline correction to the
 7928: user's bubbling (factors out common code from scantron_get_correction
 7929: for multi and missing bubble cases).
 7930: 
 7931:  Arguments:
 7932:    $r           - Apache request object.
 7933:    $question    - The question number to prompt for.
 7934:    $scan_config - The scantron file configuration hash.
 7935:    $scan_record - Reference to the hash that has the the parsed scanlines.
 7936:    $error       - Type of error
 7937:    $randomorder - True if randomorder in use.
 7938:    $randompick  - True if randompick in use.
 7939:    $respnumlookup - Reference to HASH mapping question numbers in bubble lines
 7940:                     for current line to question number used for same question
 7941:                     in "Master Seqence" (as seen by Course Coordinator).
 7942:    $startline   - Reference to hash where key is question number (0 is first)
 7943:                   and value is number of first bubble line for current student
 7944:                   or code-based randompick and/or randomorder.
 7945: 
 7946: 
 7947:  Implicit inputs:
 7948:    %bubble_lines_per_response   - Starting line numbers for each question.
 7949:                                   Numbered from 0 (but question numbers are from
 7950:                                   1.
 7951:    %first_bubble_line           - Starting bubble line for each question.
 7952:    %subdivided_bubble_lines     - optionresponse, matchresponse and rankresponse 
 7953:                                   type problems render as separate sub-questions, 
 7954:                                   in exam mode. This hash contains a 
 7955:                                   comma-separated list of the lines per 
 7956:                                   sub-question.
 7957:    %responsetype_per_response   - essayresponse, formularesponse,
 7958:                                   stringresponse, imageresponse, reactionresponse,
 7959:                                   and organicresponse type problem parts can have
 7960:                                   multiple lines per response if the weight
 7961:                                   assigned exceeds 10.  In this case, only
 7962:                                   one bubble per line is permitted, but more 
 7963:                                   than one line might contain bubbles, e.g.
 7964:                                   bubbling of: line 1 - J, line 2 - J, 
 7965:                                   line 3 - B would assign 22 points.  
 7966: 
 7967: =cut
 7968: 
 7969: sub prompt_for_corrections {
 7970:     my ($r, $question, $scan_config, $scan_record, $error, $randomorder,
 7971:         $randompick, $respnumlookup, $startline) = @_;
 7972:     my ($current_line,$lines);
 7973:     my @linenums;
 7974:     my $questionnum = $question;
 7975:     my ($first,$responsenum);
 7976:     if ($question =~ /^(\d+)\.(\d+)$/) {
 7977:         $question = $1;
 7978:         my $subquestion = $2;
 7979:         if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7980:             $responsenum = $respnumlookup->{$question-1};
 7981:             if (ref($startline) eq 'HASH') {
 7982:                 $first = $startline->{$question-1};
 7983:             }
 7984:         } else {
 7985:             $responsenum = $question-1;
 7986:             $first = $first_bubble_line{$responsenum};
 7987:         }
 7988:         $current_line = $first + 1 ;
 7989:         my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
 7990:         my $subcount = 1;
 7991:         while ($subcount<$subquestion) {
 7992:             $current_line += $subans[$subcount-1];
 7993:             $subcount ++;
 7994:         }
 7995:         $lines = $subans[$subquestion-1];
 7996:     } else {
 7997:         if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7998:             $responsenum = $respnumlookup->{$question-1};
 7999:             if (ref($startline) eq 'HASH') { 
 8000:                 $first = $startline->{$question-1};
 8001:             }
 8002:         } else {
 8003:             $responsenum = $question-1;
 8004:             $first = $first_bubble_line{$responsenum};
 8005:         }
 8006:         $current_line = $first + 1;
 8007:         $lines        = $bubble_lines_per_response{$responsenum};
 8008:     }
 8009:     if ($lines > 1) {
 8010:         $r->print(&mt('The group of bubble lines below responds to a single question.').'<br />');
 8011:         if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
 8012:             ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
 8013:             ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
 8014:             ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
 8015:             ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
 8016:             ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
 8017:             $r->print(
 8018:                 &mt("Although this particular question type requires handgrading, the instructions for this question in the bubblesheet exam directed students to leave [quant,_1,line] blank on their bubblesheets.",$lines)
 8019:                .'<br /><br />'
 8020:                .&mt('A non-zero score can be assigned to the student during bubblesheet grading by selecting a bubble in at least one line.')
 8021:                .'<br />'
 8022:                .&mt('The score for this question will be a sum of the numeric values for the selected bubbles from each line, where A=1 point, B=2 points etc.')
 8023:                .'<br />'
 8024:                .&mt("To assign a score of zero for this question, mark all lines as 'No bubble'.")
 8025:                .'<br /><br />'
 8026:             );
 8027:         } else {
 8028:             $r->print(&mt("Select at most one bubble in a single line and select 'No Bubble' in all the other lines. ")."<br />");
 8029:         }
 8030:     }
 8031:     for (my $i =0; $i < $lines; $i++) {
 8032:         my $selected = $$scan_record{"scantron.$current_line.answer"};
 8033: 	&scantron_bubble_selector($r,$scan_config,$current_line,
 8034: 	        		  $questionnum,$error,split('', $selected));
 8035:         push(@linenums,$current_line);
 8036: 	$current_line++;
 8037:     }
 8038:     if ($lines > 1) {
 8039: 	$r->print("<hr /><br />");
 8040:     }
 8041:     return @linenums;
 8042: }
 8043: 
 8044: =pod
 8045: 
 8046: =item scantron_bubble_selector
 8047:   
 8048:    Generates the html radiobuttons to correct a single bubble line
 8049:    possibly showing the existing the selected bubbles if known
 8050: 
 8051:  Arguments:
 8052:     $r           - Apache request object
 8053:     $scan_config - hash from &Apache::lonnet::get_scantron_config()
 8054:     $line        - Number of the line being displayed.
 8055:     $questionnum - Question number (may include subquestion)
 8056:     $error       - Type of error.
 8057:     @selected    - Array of bubbles picked on this line.
 8058: 
 8059: =cut
 8060: 
 8061: sub scantron_bubble_selector {
 8062:     my ($r,$scan_config,$line,$questionnum,$error,@selected)=@_;
 8063:     my $max=$$scan_config{'Qlength'};
 8064: 
 8065:     my $scmode=$$scan_config{'Qon'};
 8066:     if ($scmode eq 'number' || $scmode eq 'letter') { 
 8067:         if (($$scan_config{'BubblesPerRow'} =~ /^\d+$/) &&
 8068:             ($$scan_config{'BubblesPerRow'} > 0)) {
 8069:             $max=$$scan_config{'BubblesPerRow'};
 8070:             if (($scmode eq 'number') && ($max > 10)) {
 8071:                 $max = 10;
 8072:             } elsif (($scmode eq 'letter') && $max > 26) {
 8073:                 $max = 26;
 8074:             }
 8075:         } else {
 8076:             $max = 10;
 8077:         }
 8078:     }
 8079: 
 8080:     my @alphabet=('A'..'Z');
 8081:     $r->print(&Apache::loncommon::start_data_table().
 8082:               &Apache::loncommon::start_data_table_row());
 8083:     $r->print('<td rowspan="2" class="LC_leftcol_header">'.$line.'</td>');
 8084:     for (my $i=0;$i<$max+1;$i++) {
 8085: 	$r->print("\n".'<td align="center">');
 8086: 	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
 8087: 	else { $r->print('&nbsp;'); }
 8088: 	$r->print('</td>');
 8089:     }
 8090:     $r->print(&Apache::loncommon::end_data_table_row().
 8091:               &Apache::loncommon::start_data_table_row());
 8092:     for (my $i=0;$i<$max;$i++) {
 8093: 	$r->print("\n".
 8094: 		  '<td><label><input type="radio" name="scantron_correct_Q_'.
 8095: 		  $line.'" value="'.$i.'" />'.$alphabet[$i]."</label></td>");
 8096:     }
 8097:     my $nobub_checked = ' ';
 8098:     if ($error eq 'missingbubble') {
 8099:         $nobub_checked = ' checked = "checked" ';
 8100:     }
 8101:     $r->print("\n".'<td><label><input type="radio" name="scantron_correct_Q_'.
 8102: 	      $line.'" value="none"'.$nobub_checked.'/>'.&mt('No bubble').
 8103:               '</label>'."\n".'<input type="hidden" name="scantron_questionnum_Q_'.
 8104:               $line.'" value="'.$questionnum.'" /></td>');
 8105:     $r->print(&Apache::loncommon::end_data_table_row().
 8106:               &Apache::loncommon::end_data_table());
 8107: }
 8108: 
 8109: =pod
 8110: 
 8111: =item num_matches
 8112: 
 8113:    Counts the number of characters that are the same between the two arguments.
 8114: 
 8115:  Arguments:
 8116:    $orig - CODE from the scanline
 8117:    $code - CODE to match against
 8118: 
 8119:  Returns:
 8120:    $count - integer count of the number of same characters between the
 8121:             two arguments
 8122: 
 8123: =cut
 8124: 
 8125: sub num_matches {
 8126:     my ($orig,$code) = @_;
 8127:     my @code=split(//,$code);
 8128:     my @orig=split(//,$orig);
 8129:     my $same=0;
 8130:     for (my $i=0;$i<scalar(@code);$i++) {
 8131: 	if ($code[$i] eq $orig[$i]) { $same++; }
 8132:     }
 8133:     return $same;
 8134: }
 8135: 
 8136: =pod
 8137: 
 8138: =item scantron_get_closely_matching_CODEs
 8139: 
 8140:    Cycles through all CODEs and finds the set that has the greatest
 8141:    number of same characters as the provided CODE
 8142: 
 8143:  Arguments:
 8144:    $allcodes - hash ref returned by &get_codes()
 8145:    $CODE     - CODE from the current scanline
 8146: 
 8147:  Returns:
 8148:    2 element list
 8149:     - first elements is number of how closely matching the best fit is 
 8150:       (5 means best set has 5 matching characters)
 8151:     - second element is an arrary ref containing the set of valid CODEs
 8152:       that best fit the passed in CODE
 8153: 
 8154: =cut
 8155: 
 8156: sub scantron_get_closely_matching_CODEs {
 8157:     my ($allcodes,$CODE)=@_;
 8158:     my @CODEs;
 8159:     foreach my $testcode (sort(keys(%{$allcodes}))) {
 8160: 	push(@{$CODEs[&num_matches($CODE,$testcode)]},$testcode);
 8161:     }
 8162: 
 8163:     return ($#CODEs,$CODEs[-1]);
 8164: }
 8165: 
 8166: =pod
 8167: 
 8168: =item get_codes
 8169: 
 8170:    Builds a hash which has keys of all of the valid CODEs from the selected
 8171:    set of remembered CODEs.
 8172: 
 8173:  Arguments:
 8174:   $old_name - name of the set of remembered CODEs
 8175:   $cdom     - domain of the course
 8176:   $cnum     - internal course name
 8177: 
 8178:  Returns:
 8179:   %allcodes - keys are the valid CODEs, values are all 1
 8180: 
 8181: =cut
 8182: 
 8183: sub get_codes {
 8184:     my ($old_name, $cdom, $cnum) = @_;
 8185:     if (!$old_name) {
 8186: 	$old_name=$env{'form.scantron_CODElist'};
 8187:     }
 8188:     if (!$cdom) {
 8189: 	$cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 8190:     }
 8191:     if (!$cnum) {
 8192: 	$cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 8193:     }
 8194:     my %result=&Apache::lonnet::get('CODEs',[$old_name,"type\0$old_name"],
 8195: 				    $cdom,$cnum);
 8196:     my %allcodes;
 8197:     if ($result{"type\0$old_name"} eq 'number') {
 8198: 	%allcodes=map {($_,1)} split(',',$result{$old_name});
 8199:     } else {
 8200: 	%allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
 8201:     }
 8202:     return %allcodes;
 8203: }
 8204: 
 8205: =pod
 8206: 
 8207: =item scantron_validate_CODE
 8208: 
 8209:    Validates all scanlines in the selected file to not have any
 8210:    invalid or underspecified CODEs and that none of the codes are
 8211:    duplicated if this was requested.
 8212: 
 8213: =cut
 8214: 
 8215: sub scantron_validate_CODE {
 8216:     my ($r,$currentphase) = @_;
 8217:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8218:     if ($scantron_config{'CODElocation'} &&
 8219: 	$scantron_config{'CODEstart'} &&
 8220: 	$scantron_config{'CODElength'}) {
 8221: 	if (!defined($env{'form.scantron_CODElist'})) {
 8222: 	    &FIXME_blow_up()
 8223: 	}
 8224:     } else {
 8225: 	return (0,$currentphase+1);
 8226:     }
 8227:     
 8228:     my %usedCODEs;
 8229: 
 8230:     my %allcodes=&get_codes();
 8231: 
 8232:     my $nav_error;
 8233:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the lines per response array.
 8234:     if ($nav_error) {
 8235:         $r->print(&navmap_errormsg());
 8236:         return(1,$currentphase);
 8237:     }
 8238: 
 8239:     my ($scanlines,$scan_data)=&scantron_getfile();
 8240:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 8241: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8242: 	if ($line=~/^[\s\cz]*$/) { next; }
 8243: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 8244: 						 $scan_data);
 8245: 	my $CODE=$$scan_record{'scantron.CODE'};
 8246: 	my $error=0;
 8247: 	if (!&Apache::lonnet::validCODE($CODE)) {
 8248: 	    &scantron_get_correction($r,$i,$scan_record,
 8249: 				     \%scantron_config,
 8250: 				     $line,'incorrectCODE',\%allcodes);
 8251: 	    return(1,$currentphase);
 8252: 	}
 8253: 	if (%allcodes && !exists($allcodes{$CODE}) 
 8254: 	    && !$$scan_record{'scantron.useCODE'}) {
 8255: 	    &scantron_get_correction($r,$i,$scan_record,
 8256: 				     \%scantron_config,
 8257: 				     $line,'incorrectCODE',\%allcodes);
 8258: 	    return(1,$currentphase);
 8259: 	}
 8260: 	if (exists($usedCODEs{$CODE}) 
 8261: 	    && $env{'form.scantron_CODEunique'} eq 'yes'
 8262: 	    && !$$scan_record{'scantron.CODE_ignore_dup'}) {
 8263: 	    &scantron_get_correction($r,$i,$scan_record,
 8264: 				     \%scantron_config,
 8265: 				     $line,'duplicateCODE',$usedCODEs{$CODE});
 8266: 	    return(1,$currentphase);
 8267: 	}
 8268: 	push(@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
 8269:     }
 8270:     return (0,$currentphase+1);
 8271: }
 8272: 
 8273: =pod
 8274: 
 8275: =item scantron_validate_doublebubble
 8276: 
 8277:    Validates all scanlines in the selected file to not have any
 8278:    bubble lines with multiple bubbles marked.
 8279: 
 8280: =cut
 8281: 
 8282: sub scantron_validate_doublebubble {
 8283:     my ($r,$currentphase) = @_;
 8284:     #get student info
 8285:     my $classlist=&Apache::loncoursedata::get_classlist();
 8286:     my %idmap=&username_to_idmap($classlist);
 8287:     my (undef,undef,$sequence)=
 8288:         &Apache::lonnet::decode_symb($env{'form.selectpage'});
 8289: 
 8290:     #get scantron line setup
 8291:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8292:     my ($scanlines,$scan_data)=&scantron_getfile();
 8293: 
 8294:     my $navmap = Apache::lonnavmaps::navmap->new();
 8295:     unless (ref($navmap)) {
 8296:         $r->print(&navmap_errormsg());
 8297:         return(1,$currentphase);
 8298:     }
 8299:     my $map=$navmap->getResourceByUrl($sequence);
 8300:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8301:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 8302:         %grader_randomlists_by_symb,%orderedforcode,%respnumlookup,%startline);
 8303:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 8304: 
 8305:     my $nav_error;
 8306:     if (ref($map)) {
 8307:         $randomorder = $map->randomorder();
 8308:         $randompick = $map->randompick();
 8309:         if ($randomorder || $randompick) {
 8310:             $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 8311:             if ($nav_error) {
 8312:                 $r->print(&navmap_errormsg());
 8313:                 return(1,$currentphase);
 8314:             }
 8315:             &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 8316:                                     \%grader_randomlists_by_symb,$bubbles_per_row);
 8317:         }
 8318:     } else {
 8319:         $r->print(&navmap_errormsg());
 8320:         return(1,$currentphase);
 8321:     }
 8322: 
 8323:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the bubble line array.
 8324:     if ($nav_error) {
 8325:         $r->print(&navmap_errormsg());
 8326:         return(1,$currentphase);
 8327:     }
 8328: 
 8329:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 8330: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8331: 	if ($line=~/^[\s\cz]*$/) { next; }
 8332: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 8333: 						 $scan_data,undef,\%idmap,$randomorder,
 8334:                                                  $randompick,$sequence,\@master_seq,
 8335:                                                  \%symb_to_resource,\%grader_partids_by_symb,
 8336:                                                  \%orderedforcode,\%respnumlookup,\%startline);
 8337: 	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
 8338: 	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
 8339: 				 'doublebubble',
 8340: 				 $$scan_record{'scantron.doubleerror'},
 8341:                                  $randomorder,$randompick,\%respnumlookup,\%startline);
 8342:     	return (1,$currentphase);
 8343:     }
 8344:     return (0,$currentphase+1);
 8345: }
 8346: 
 8347: 
 8348: sub scantron_get_maxbubble {
 8349:     my ($nav_error,$scantron_config) = @_;
 8350:     if (defined($env{'form.scantron_maxbubble'}) &&
 8351: 	$env{'form.scantron_maxbubble'}) {
 8352: 	&restore_bubble_lines();
 8353: 	return $env{'form.scantron_maxbubble'};
 8354:     }
 8355: 
 8356:     my (undef, undef, $sequence) =
 8357: 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 8358: 
 8359:     my $navmap=Apache::lonnavmaps::navmap->new();
 8360:     unless (ref($navmap)) {
 8361:         if (ref($nav_error)) {
 8362:             $$nav_error = 1;
 8363:         }
 8364:         return;
 8365:     }
 8366:     my $map=$navmap->getResourceByUrl($sequence);
 8367:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8368:     my $bubbles_per_row = &bubblesheet_bubbles_per_row($scantron_config);
 8369: 
 8370:     &Apache::lonxml::clear_problem_counter();
 8371: 
 8372:     my $uname       = $env{'user.name'};
 8373:     my $udom        = $env{'user.domain'};
 8374:     my $cid         = $env{'request.course.id'};
 8375:     my $total_lines = 0;
 8376:     %bubble_lines_per_response = ();
 8377:     %first_bubble_line         = ();
 8378:     %subdivided_bubble_lines   = ();
 8379:     %responsetype_per_response = ();
 8380:     %masterseq_id_responsenum  = ();
 8381: 
 8382:     my $response_number = 0;
 8383:     my $bubble_line     = 0;
 8384:     foreach my $resource (@resources) {
 8385:         my $resid = $resource->id(); 
 8386:         my ($analysis,$parts) = &scantron_partids_tograde($resource,$cid,$uname,
 8387:                                                           $udom,undef,$bubbles_per_row);
 8388:         if ((ref($analysis) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
 8389: 	    foreach my $part_id (@{$parts}) {
 8390:                 my $lines;
 8391: 
 8392: 	        # TODO - make this a persistent hash not an array.
 8393: 
 8394:                 # optionresponse, matchresponse and rankresponse type items 
 8395:                 # render as separate sub-questions in exam mode.
 8396:                 if (($analysis->{$part_id.'.type'} eq 'optionresponse') ||
 8397:                     ($analysis->{$part_id.'.type'} eq 'matchresponse') ||
 8398:                     ($analysis->{$part_id.'.type'} eq 'rankresponse')) {
 8399:                     my ($numbub,$numshown);
 8400:                     if ($analysis->{$part_id.'.type'} eq 'optionresponse') {
 8401:                         if (ref($analysis->{$part_id.'.options'}) eq 'ARRAY') {
 8402:                             $numbub = scalar(@{$analysis->{$part_id.'.options'}});
 8403:                         }
 8404:                     } elsif ($analysis->{$part_id.'.type'} eq 'matchresponse') {
 8405:                         if (ref($analysis->{$part_id.'.items'}) eq 'ARRAY') {
 8406:                             $numbub = scalar(@{$analysis->{$part_id.'.items'}});
 8407:                         }
 8408:                     } elsif ($analysis->{$part_id.'.type'} eq 'rankresponse') {
 8409:                         if (ref($analysis->{$part_id.'.foils'}) eq 'ARRAY') {
 8410:                             $numbub = scalar(@{$analysis->{$part_id.'.foils'}});
 8411:                         }
 8412:                     }
 8413:                     if (ref($analysis->{$part_id.'.shown'}) eq 'ARRAY') {
 8414:                         $numshown = scalar(@{$analysis->{$part_id.'.shown'}});
 8415:                     }
 8416:                     my $bubbles_per_row =
 8417:                         &bubblesheet_bubbles_per_row($scantron_config);
 8418:                     my $inner_bubble_lines = int($numbub/$bubbles_per_row);
 8419:                     if (($numbub % $bubbles_per_row) != 0) {
 8420:                         $inner_bubble_lines++;
 8421:                     }
 8422:                     for (my $i=0; $i<$numshown; $i++) {
 8423:                         $subdivided_bubble_lines{$response_number} .= 
 8424:                             $inner_bubble_lines.',';
 8425:                     }
 8426:                     $subdivided_bubble_lines{$response_number} =~ s/,$//;
 8427:                     $lines = $numshown * $inner_bubble_lines;
 8428:                 } else {
 8429:                     $lines = $analysis->{"$part_id.bubble_lines"};
 8430:                 }
 8431: 
 8432:                 $first_bubble_line{$response_number} = $bubble_line;
 8433: 	        $bubble_lines_per_response{$response_number} = $lines;
 8434:                 $responsetype_per_response{$response_number} = 
 8435:                     $analysis->{$part_id.'.type'};
 8436:                 $masterseq_id_responsenum{$resid.'_'.$part_id} = $response_number;  
 8437: 	        $response_number++;
 8438: 
 8439: 	        $bubble_line +=  $lines;
 8440: 	        $total_lines +=  $lines;
 8441: 	    }
 8442:         }
 8443:     }
 8444:     &Apache::lonnet::delenv('scantron.');
 8445: 
 8446:     &save_bubble_lines();
 8447:     $env{'form.scantron_maxbubble'} =
 8448: 	$total_lines;
 8449:     return $env{'form.scantron_maxbubble'};
 8450: }
 8451: 
 8452: sub bubblesheet_bubbles_per_row {
 8453:     my ($scantron_config) = @_;
 8454:     my $bubbles_per_row;
 8455:     if (ref($scantron_config) eq 'HASH') {
 8456:         $bubbles_per_row = $scantron_config->{'BubblesPerRow'};
 8457:     }
 8458:     if ((!$bubbles_per_row) || ($bubbles_per_row < 1)) {
 8459:         $bubbles_per_row = 10;
 8460:     }
 8461:     return $bubbles_per_row;
 8462: }
 8463: 
 8464: sub scantron_validate_missingbubbles {
 8465:     my ($r,$currentphase) = @_;
 8466:     #get student info
 8467:     my $classlist=&Apache::loncoursedata::get_classlist();
 8468:     my %idmap=&username_to_idmap($classlist);
 8469:     my (undef,undef,$sequence)=
 8470:         &Apache::lonnet::decode_symb($env{'form.selectpage'});
 8471: 
 8472:     #get scantron line setup
 8473:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8474:     my ($scanlines,$scan_data)=&scantron_getfile();
 8475: 
 8476:     my $navmap = Apache::lonnavmaps::navmap->new();
 8477:     unless (ref($navmap)) {
 8478:         $r->print(&navmap_errormsg());
 8479:         return(1,$currentphase);
 8480:     }
 8481: 
 8482:     my $map=$navmap->getResourceByUrl($sequence);
 8483:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8484:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 8485:         %grader_randomlists_by_symb,%orderedforcode,%respnumlookup,%startline);
 8486:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 8487: 
 8488:     my $nav_error;
 8489:     if (ref($map)) {
 8490:         $randomorder = $map->randomorder();
 8491:         $randompick = $map->randompick();
 8492:         if ($randomorder || $randompick) {
 8493:             $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 8494:             if ($nav_error) {
 8495:                 $r->print(&navmap_errormsg());
 8496:                 return(1,$currentphase);
 8497:             }
 8498:             &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 8499:                                     \%grader_randomlists_by_symb,$bubbles_per_row);
 8500:         }
 8501:     } else {
 8502:         $r->print(&navmap_errormsg());
 8503:         return(1,$currentphase);
 8504:     }
 8505: 
 8506: 
 8507:     my $max_bubble=&scantron_get_maxbubble(\$nav_error,\%scantron_config);
 8508:     if ($nav_error) {
 8509:         $r->print(&navmap_errormsg());
 8510:         return(1,$currentphase);
 8511:     }
 8512: 
 8513:     if (!$max_bubble) { $max_bubble=2**31; }
 8514:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 8515: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8516: 	if ($line=~/^[\s\cz]*$/) { next; }
 8517: 	my $scan_record =
 8518:             &scantron_parse_scanline($line,$i,\%scantron_config,$scan_data,undef,\%idmap,
 8519: 				     $randomorder,$randompick,$sequence,\@master_seq,
 8520:                                      \%symb_to_resource,\%grader_partids_by_symb,
 8521:                                      \%orderedforcode,\%respnumlookup,\%startline);
 8522: 	if (!defined($$scan_record{'scantron.missingerror'})) { next; }
 8523: 	my @to_correct;
 8524: 	
 8525: 	# Probably here's where the error is...
 8526: 
 8527: 	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
 8528:             my $lastbubble;
 8529:             if ($missing =~ /^(\d+)\.(\d+)$/) {
 8530:                my $question = $1;
 8531:                my $subquestion = $2;
 8532:                my ($first,$responsenum);
 8533:                if ($randomorder || $randompick) {
 8534:                    $responsenum = $respnumlookup{$question-1};
 8535:                    $first = $startline{$question-1};
 8536:                } else {
 8537:                    $responsenum = $question-1; 
 8538:                    $first = $first_bubble_line{$responsenum};
 8539:                }
 8540:                if (!defined($first)) { next; }
 8541:                my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
 8542:                my $subcount = 1;
 8543:                while ($subcount<$subquestion) {
 8544:                    $first += $subans[$subcount-1];
 8545:                    $subcount ++;
 8546:                }
 8547:                my $count = $subans[$subquestion-1];
 8548:                $lastbubble = $first + $count;
 8549:             } else {
 8550:                my ($first,$responsenum);
 8551:                if ($randomorder || $randompick) {
 8552:                    $responsenum = $respnumlookup{$missing-1};
 8553:                    $first = $startline{$missing-1};
 8554:                } else {
 8555:                    $responsenum = $missing-1;
 8556:                    $first = $first_bubble_line{$responsenum};
 8557:                }
 8558:                if (!defined($first)) { next; }
 8559:                $lastbubble = $first + $bubble_lines_per_response{$responsenum};
 8560:             }
 8561:             if ($lastbubble > $max_bubble) { next; }
 8562: 	    push(@to_correct,$missing);
 8563: 	}
 8564: 	if (@to_correct) {
 8565: 	    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 8566: 				     $line,'missingbubble',\@to_correct,
 8567:                                      $randomorder,$randompick,\%respnumlookup,
 8568:                                      \%startline);
 8569: 	    return (1,$currentphase);
 8570: 	}
 8571: 
 8572:     }
 8573:     return (0,$currentphase+1);
 8574: }
 8575: 
 8576: sub hand_bubble_option {
 8577:     my (undef, undef, $sequence) =
 8578:         &Apache::lonnet::decode_symb($env{'form.selectpage'});
 8579:     return if ($sequence eq '');
 8580:     my $navmap = Apache::lonnavmaps::navmap->new();
 8581:     unless (ref($navmap)) {
 8582:         return;
 8583:     }
 8584:     my $needs_hand_bubbles;
 8585:     my $map=$navmap->getResourceByUrl($sequence);
 8586:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8587:     foreach my $res (@resources) {
 8588:         if (ref($res)) {
 8589:             if ($res->is_problem()) {
 8590:                 my $partlist = $res->parts();
 8591:                 foreach my $part (@{ $partlist }) {
 8592:                     my @types = $res->responseType($part);
 8593:                     if (grep(/^(chem|essay|image|formula|math|string|functionplot)$/,@types)) {
 8594:                         $needs_hand_bubbles = 1;
 8595:                         last;
 8596:                     }
 8597:                 }
 8598:             }
 8599:         }
 8600:     }
 8601:     if ($needs_hand_bubbles) {
 8602:         my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8603:         my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 8604:         return &mt('The sequence to be graded contains response types which are handgraded.').'<p>'.
 8605:                &mt('If you have already graded these by bubbling sheets to indicate points awarded, [_1]what point value is assigned to a filled last bubble in each row?','<br />').
 8606:                '<label><input type="radio" name="scantron_lastbubblepoints" value="'.$bubbles_per_row.'" checked="checked" />'.&mt('[quant,_1,point]',$bubbles_per_row).'</label>&nbsp;'.&mt('or').'&nbsp;'.
 8607:                '<label><input type="radio" name="scantron_lastbubblepoints" value="0" />'.&mt('0 points').'</label></p>';
 8608:     }
 8609:     return;
 8610: }
 8611: 
 8612: sub scantron_process_students {
 8613:     my ($r,$symb) = @_;
 8614: 
 8615:     my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($env{'form.selectpage'});
 8616:     if (!$symb) {
 8617: 	return '';
 8618:     }
 8619:     my $default_form_data=&defaultFormData($symb);
 8620: 
 8621:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8622:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config); 
 8623:     my ($scanlines,$scan_data)=&scantron_getfile();
 8624:     my $classlist=&Apache::loncoursedata::get_classlist();
 8625:     my %idmap=&username_to_idmap($classlist);
 8626:     my $navmap=Apache::lonnavmaps::navmap->new();
 8627:     unless (ref($navmap)) {
 8628:         $r->print(&navmap_errormsg());
 8629:         return '';
 8630:     }
 8631:     my $map=$navmap->getResourceByUrl($sequence);
 8632:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 8633:         %grader_randomlists_by_symb);
 8634:     if (ref($map)) {
 8635:         $randomorder = $map->randomorder();
 8636:         $randompick = $map->randompick();
 8637:     } else {
 8638:         $r->print(&navmap_errormsg());
 8639:         return '';
 8640:     }
 8641:     my $nav_error;
 8642:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8643:     if ($randomorder || $randompick) {
 8644:         $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 8645:         if ($nav_error) {
 8646:             $r->print(&navmap_errormsg());
 8647:             return '';
 8648:         }
 8649:     }
 8650:     &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 8651:                             \%grader_randomlists_by_symb,$bubbles_per_row);
 8652: 
 8653:     my ($uname,$udom);
 8654:     my $result= <<SCANTRONFORM;
 8655: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
 8656:   <input type="hidden" name="command" value="scantron_configphase" />
 8657:   $default_form_data
 8658: SCANTRONFORM
 8659:     $r->print($result);
 8660: 
 8661:     my @delayqueue;
 8662:     my (%completedstudents,%scandata);
 8663:     
 8664:     my $lock=&Apache::lonnet::set_lock(&mt('Grading bubblesheet exam'));
 8665:     my $count=&get_todo_count($scanlines,$scan_data);
 8666:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$count);
 8667:     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,'Processing first student');
 8668:     $r->print('<br />');
 8669:     my $start=&Time::HiRes::time();
 8670:     my $i=-1;
 8671:     my $started;
 8672: 
 8673:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # Need the bubble lines array to parse.
 8674:     if ($nav_error) {
 8675:         $r->print(&navmap_errormsg());
 8676:         return '';
 8677:     }
 8678: 
 8679:     # If an ssi failed in scantron_get_maxbubble, put an error message out to
 8680:     # the user and return.
 8681: 
 8682:     if ($ssi_error) {
 8683: 	$r->print("</form>");
 8684: 	&ssi_print_error($r);
 8685:         &Apache::lonnet::remove_lock($lock);
 8686: 	return '';		# Dunno why the other returns return '' rather than just returning.
 8687:     }
 8688: 
 8689:     my %lettdig = &Apache::lonnet::letter_to_digits();
 8690:     my $numletts = scalar(keys(%lettdig));
 8691:     my %orderedforcode;
 8692: 
 8693:     while ($i<$scanlines->{'count'}) {
 8694:  	($uname,$udom)=('','');
 8695:  	$i++;
 8696:  	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8697:  	if ($line=~/^[\s\cz]*$/) { next; }
 8698: 	if ($started) {
 8699: 	    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
 8700: 	}
 8701: 	$started=1;
 8702:         my %respnumlookup = ();
 8703:         my %startline = ();
 8704:         my $total;
 8705:  	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 8706:                                                  $scan_data,undef,\%idmap,$randomorder,
 8707:                                                  $randompick,$sequence,\@master_seq,
 8708:                                                  \%symb_to_resource,\%grader_partids_by_symb,
 8709:                                                  \%orderedforcode,\%respnumlookup,\%startline,
 8710:                                                  \$total);
 8711:  	unless ($uname=&scantron_find_student($scan_record,$scan_data,
 8712:  					      \%idmap,$i)) {
 8713:   	    &scantron_add_delay(\@delayqueue,$line,
 8714:  				'Unable to find a student that matches',1);
 8715:  	    next;
 8716:   	}
 8717:  	if (exists $completedstudents{$uname}) {
 8718:  	    &scantron_add_delay(\@delayqueue,$line,
 8719:  				'Student '.$uname.' has multiple sheets',2);
 8720:  	    next;
 8721:  	}
 8722:         my $usec = $classlist->{$uname}->[&Apache::loncoursedata::CL_SECTION];
 8723:         my $user = $uname.':'.$usec;
 8724:   	($uname,$udom)=split(/:/,$uname);
 8725: 
 8726:         my $scancode;
 8727:         if ((exists($scan_record->{'scantron.CODE'})) &&
 8728:             (&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'}))) {
 8729:             $scancode = $scan_record->{'scantron.CODE'};
 8730:         } else {
 8731:             $scancode = '';
 8732:         }
 8733: 
 8734:         my @mapresources = @resources;
 8735:         if ($randomorder || $randompick) {
 8736:             @mapresources = 
 8737:                 &users_order($user,$scancode,$sequence,\@master_seq,\%symb_to_resource,
 8738:                              \%orderedforcode);
 8739:         }
 8740:         my (%partids_by_symb,$res_error);
 8741:         foreach my $resource (@mapresources) {
 8742:             my $ressymb;
 8743:             if (ref($resource)) {
 8744:                 $ressymb = $resource->symb();
 8745:             } else {
 8746:                 $res_error = 1;
 8747:                 last;
 8748:             }
 8749:             if ((exists($grader_randomlists_by_symb{$ressymb})) ||
 8750:                 (ref($grader_partids_by_symb{$ressymb}) ne 'ARRAY')) {
 8751:                 my $currcode;
 8752:                 if (exists($grader_randomlists_by_symb{$ressymb})) {
 8753:                     $currcode = $scancode;
 8754:                 }
 8755:                 my ($analysis,$parts) =
 8756:                     &scantron_partids_tograde($resource,$env{'request.course.id'},
 8757:                                               $uname,$udom,undef,$bubbles_per_row,
 8758:                                               $currcode);
 8759:                 $partids_by_symb{$ressymb} = $parts;
 8760:             } else {
 8761:                 $partids_by_symb{$ressymb} = $grader_partids_by_symb{$ressymb};
 8762:             }
 8763:         }
 8764: 
 8765:         if ($res_error) {
 8766:             &scantron_add_delay(\@delayqueue,$line,
 8767:                                 'An error occurred while grading student '.$uname,2);
 8768:             next;
 8769:         }
 8770: 
 8771: 	&Apache::lonxml::clear_problem_counter();
 8772:   	&Apache::lonnet::appenv($scan_record);
 8773: 
 8774: 	if (&scantron_clear_skip($scanlines,$scan_data,$i)) {
 8775: 	    &scantron_putfile($scanlines,$scan_data);
 8776: 	}
 8777: 	
 8778:         if (&grade_student_bubbles($r,$uname,$udom,$scan_record,$scancode,
 8779:                                    \@mapresources,\%partids_by_symb,
 8780:                                    $bubbles_per_row,$randomorder,$randompick,
 8781:                                    \%respnumlookup,\%startline) 
 8782:             eq 'ssi_error') {
 8783:             $ssi_error = 0; # So end of handler error message does not trigger.
 8784:             $r->print("</form>");
 8785:             &ssi_print_error($r);
 8786:             &Apache::lonnet::remove_lock($lock);
 8787:             return '';      # Why return ''?  Beats me.
 8788:         }
 8789: 
 8790:         if (($scancode) && ($randomorder || $randompick)) {
 8791:             my $parmresult =
 8792:                 &Apache::lonparmset::storeparm_by_symb($symb,
 8793:                                                        '0_examcode',2,$scancode,
 8794:                                                        'string_examcode',$uname,
 8795:                                                        $udom);
 8796:         }
 8797: 	$completedstudents{$uname}={'line'=>$line};
 8798:         if ($env{'form.verifyrecord'}) {
 8799:             my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
 8800:             if ($randompick) {
 8801:                 if ($total) {
 8802:                     $lastpos = $total*$scantron_config{'Qlength'};
 8803:                 }
 8804:             }
 8805: 
 8806:             my $studentdata = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
 8807:             chomp($studentdata);
 8808:             $studentdata =~ s/\r$//;
 8809:             my $studentrecord = '';
 8810:             my $counter = -1;
 8811:             foreach my $resource (@mapresources) {
 8812:                 my $ressymb = $resource->symb();
 8813:                 ($counter,my $recording) =
 8814:                     &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
 8815:                                              $counter,$studentdata,$partids_by_symb{$ressymb},
 8816:                                              \%scantron_config,\%lettdig,$numletts,$randomorder,
 8817:                                              $randompick,\%respnumlookup,\%startline);
 8818:                 $studentrecord .= $recording;
 8819:             }
 8820:             if ($studentrecord ne $studentdata) {
 8821:                 &Apache::lonxml::clear_problem_counter();
 8822:                 if (&grade_student_bubbles($r,$uname,$udom,$scan_record,$scancode,
 8823:                                            \@mapresources,\%partids_by_symb,
 8824:                                            $bubbles_per_row,$randomorder,$randompick,
 8825:                                            \%respnumlookup,\%startline) 
 8826:                     eq 'ssi_error') {
 8827:                     $ssi_error = 0; # So end of handler error message does not trigger.
 8828:                     $r->print("</form>");
 8829:                     &ssi_print_error($r);
 8830:                     &Apache::lonnet::remove_lock($lock);
 8831:                     delete($completedstudents{$uname});
 8832:                     return '';
 8833:                 }
 8834:                 $counter = -1;
 8835:                 $studentrecord = '';
 8836:                 foreach my $resource (@mapresources) {
 8837:                     my $ressymb = $resource->symb();
 8838:                     ($counter,my $recording) =
 8839:                         &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
 8840:                                                  $counter,$studentdata,$partids_by_symb{$ressymb},
 8841:                                                  \%scantron_config,\%lettdig,$numletts,
 8842:                                                  $randomorder,$randompick,\%respnumlookup,
 8843:                                                  \%startline);
 8844:                     $studentrecord .= $recording;
 8845:                 }
 8846:                 if ($studentrecord ne $studentdata) {
 8847:                     $r->print('<p><span class="LC_warning">');
 8848:                     if ($scancode eq '') {
 8849:                         $r->print(&mt('Mismatch grading bubblesheet for user: [_1] with ID: [_2].',
 8850:                                   $uname.':'.$udom,$scan_record->{'scantron.ID'}));
 8851:                     } else {
 8852:                         $r->print(&mt('Mismatch grading bubblesheet for user: [_1] with ID: [_2] and CODE: [_3].',
 8853:                                   $uname.':'.$udom,$scan_record->{'scantron.ID'},$scancode));
 8854:                     }
 8855:                     $r->print('</span><br />'.&Apache::loncommon::start_data_table()."\n".
 8856:                               &Apache::loncommon::start_data_table_header_row()."\n".
 8857:                               '<th>'.&mt('Source').'</th><th>'.&mt('Bubbled responses').'</th>'.
 8858:                               &Apache::loncommon::end_data_table_header_row()."\n".
 8859:                               &Apache::loncommon::start_data_table_row().
 8860:                               '<td>'.&mt('Bubblesheet').'</td>'.
 8861:                               '<td><span class="LC_nobreak" style="white-space: pre;"><tt>'.$studentdata.'</tt></span></td>'.
 8862:                               &Apache::loncommon::end_data_table_row().
 8863:                               &Apache::loncommon::start_data_table_row().
 8864:                               '<td>'.&mt('Stored submissions').'</td>'.
 8865:                               '<td><span class="LC_nobreak" style="white-space: pre;"><tt>'.$studentrecord.'</tt></span></td>'."\n".
 8866:                               &Apache::loncommon::end_data_table_row().
 8867:                               &Apache::loncommon::end_data_table().'</p>');
 8868:                 } else {
 8869:                     $r->print('<br /><span class="LC_warning">'.
 8870:                              &mt('A second grading pass was needed for user: [_1] with ID: [_2], because a mismatch was seen on the first pass.',$uname.':'.$udom,$scan_record->{'scantron.ID'}).'<br />'.
 8871:                              &mt("As a consequence, this user's submission history records two tries.").
 8872:                                  '</span><br />');
 8873:                 }
 8874:             }
 8875:         }
 8876:         if (&Apache::loncommon::connection_aborted($r)) { last; }
 8877:     } continue {
 8878: 	&Apache::lonxml::clear_problem_counter();
 8879: 	&Apache::lonnet::delenv('scantron.');
 8880:     }
 8881:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 8882:     &Apache::lonnet::remove_lock($lock);
 8883: #    my $lasttime = &Time::HiRes::time()-$start;
 8884: #    $r->print("<p>took $lasttime</p>");
 8885: 
 8886:     $r->print("</form>");
 8887:     return '';
 8888: }
 8889: 
 8890: sub graders_resources_pass {
 8891:     my ($resources,$grader_partids_by_symb,$grader_randomlists_by_symb,
 8892:         $bubbles_per_row) = @_;
 8893:     if ((ref($resources) eq 'ARRAY') && (ref($grader_partids_by_symb)) && 
 8894:         (ref($grader_randomlists_by_symb) eq 'HASH')) {
 8895:         foreach my $resource (@{$resources}) {
 8896:             my $ressymb = $resource->symb();
 8897:             my ($analysis,$parts) =
 8898:                 &scantron_partids_tograde($resource,$env{'request.course.id'},
 8899:                                           $env{'user.name'},$env{'user.domain'},
 8900:                                           1,$bubbles_per_row);
 8901:             $grader_partids_by_symb->{$ressymb} = $parts;
 8902:             if (ref($analysis) eq 'HASH') {
 8903:                 if (ref($analysis->{'parts_withrandomlist'}) eq 'ARRAY') {
 8904:                     $grader_randomlists_by_symb->{$ressymb} =
 8905:                         $analysis->{'parts_withrandomlist'};
 8906:                 }
 8907:             }
 8908:         }
 8909:     }
 8910:     return;
 8911: }
 8912: 
 8913: =pod
 8914: 
 8915: =item users_order
 8916: 
 8917:   Returns array of resources in current map, ordered based on either CODE,
 8918:   if this is a CODEd exam, or based on student's identity if this is a 
 8919:   "NAMEd" exam.
 8920: 
 8921:   Should be used when randomorder and/or randompick applied when the 
 8922:   corresponding exam was printed, prior to students completing bubblesheets 
 8923:   for the version of the exam the student received.
 8924: 
 8925: =cut
 8926: 
 8927: sub users_order  {
 8928:     my ($user,$scancode,$mapurl,$master_seq,$symb_to_resource,$orderedforcode) = @_;
 8929:     my @mapresources;
 8930:     unless ((ref($master_seq) eq 'ARRAY') && (ref($symb_to_resource) eq 'HASH')) {
 8931:         return @mapresources;
 8932:     }
 8933:     if ($scancode) {
 8934:         if ((ref($orderedforcode) eq 'HASH') && (ref($orderedforcode->{$scancode}) eq 'ARRAY')) {
 8935:             @mapresources = @{$orderedforcode->{$scancode}};
 8936:         } else {
 8937:             $env{'form.CODE'} = $scancode;
 8938:             my $actual_seq =
 8939:                 &Apache::lonprintout::master_seq_to_person_seq($mapurl,
 8940:                                                                $master_seq,
 8941:                                                                $user,$scancode,1);
 8942:             if (ref($actual_seq) eq 'ARRAY') {
 8943:                 @mapresources = map { $symb_to_resource->{$_}; } @{$actual_seq};
 8944:                 if (ref($orderedforcode) eq 'HASH') {
 8945:                     if (@mapresources > 0) { 
 8946:                         $orderedforcode->{$scancode} = \@mapresources;
 8947:                     }
 8948:                 }
 8949:             }
 8950:             delete($env{'form.CODE'});
 8951:         }
 8952:     } else {
 8953:         my $actual_seq =
 8954:             &Apache::lonprintout::master_seq_to_person_seq($mapurl,
 8955:                                                            $master_seq,
 8956:                                                            $user,undef,1);
 8957:         if (ref($actual_seq) eq 'ARRAY') {
 8958:             @mapresources = 
 8959:                 map { $symb_to_resource->{$_}; } @{$actual_seq};
 8960:         }
 8961:     }
 8962:     return @mapresources;
 8963: }
 8964: 
 8965: sub grade_student_bubbles {
 8966:     my ($r,$uname,$udom,$scan_record,$scancode,$resources,$parts,$bubbles_per_row,
 8967:         $randomorder,$randompick,$respnumlookup,$startline) = @_;
 8968:     my $uselookup = 0;
 8969:     if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH') &&
 8970:         (ref($startline) eq 'HASH')) {
 8971:         $uselookup = 1;
 8972:     }
 8973: 
 8974:     if (ref($resources) eq 'ARRAY') {
 8975:         my $count = 0;
 8976:         foreach my $resource (@{$resources}) {
 8977:             my $ressymb = $resource->symb();
 8978:             my %form = ('submitted'      => 'scantron',
 8979:                         'grade_target'   => 'grade',
 8980:                         'grade_username' => $uname,
 8981:                         'grade_domain'   => $udom,
 8982:                         'grade_courseid' => $env{'request.course.id'},
 8983:                         'grade_symb'     => $ressymb,
 8984:                         'CODE'           => $scancode
 8985:                        );
 8986:             if ($bubbles_per_row ne '') {
 8987:                 $form{'bubbles_per_row'} = $bubbles_per_row;
 8988:             }
 8989:             if ($env{'form.scantron_lastbubblepoints'} ne '') {
 8990:                 $form{'scantron_lastbubblepoints'} = $env{'form.scantron_lastbubblepoints'};
 8991:             }
 8992:             if (ref($parts) eq 'HASH') {
 8993:                 if (ref($parts->{$ressymb}) eq 'ARRAY') {
 8994:                     foreach my $part (@{$parts->{$ressymb}}) {
 8995:                         if ($uselookup) {
 8996:                             $form{'scantron_questnum_start.'.$part} = $startline->{$count} + 1;
 8997:                         } else {
 8998:                             $form{'scantron_questnum_start.'.$part} =
 8999:                                 1+$env{'form.scantron.first_bubble_line.'.$count};
 9000:                         }
 9001:                         $count++;
 9002:                     }
 9003:                 }
 9004:             }
 9005:             my $result=&ssi_with_retries($resource->src(),$ssi_retries,%form);
 9006:             return 'ssi_error' if ($ssi_error);
 9007:             last if (&Apache::loncommon::connection_aborted($r));
 9008:         }
 9009:     }
 9010:     return;
 9011: }
 9012: 
 9013: sub scantron_upload_scantron_data {
 9014:     my ($r,$symb)=@_;
 9015:     my $dom = $env{'request.role.domain'};
 9016:     my ($formatoptions,$formattitle,$formatjs) = &scantron_upload_dataformat($dom);
 9017:     my $domdesc = &Apache::lonnet::domain($dom,'description');
 9018:     $r->print(&Apache::loncommon::coursebrowser_javascript($dom));
 9019:     my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
 9020: 							  'domainid',
 9021: 							  'coursename',$dom);
 9022:     my $syllabuslink = '<a href="javascript:ToSyllabus();">'.&mt('Syllabus').'</a>'.
 9023:                        ('&nbsp'x2).&mt('(shows course personnel)'); 
 9024:     my $default_form_data=&defaultFormData($symb);
 9025:     my $nofile_alert = &mt('Please use the browse button to select a file from your local directory.');
 9026:     &js_escape(\$nofile_alert);
 9027:     my $nocourseid_alert = &mt("Please use the 'Select Course' link to open a separate window where you can search for a course to which a file can be uploaded.");
 9028:     &js_escape(\$nocourseid_alert);
 9029:     $r->print(&Apache::lonhtmlcommon::scripttag('
 9030:     function checkUpload(formname) {
 9031: 	if (formname.upfile.value == "") {
 9032: 	    alert("'.$nofile_alert.'");
 9033: 	    return false;
 9034: 	}
 9035:         if (formname.courseid.value == "") {
 9036:             alert("'.$nocourseid_alert.'");
 9037:             return false;
 9038:         }
 9039: 	formname.submit();
 9040:     }
 9041: 
 9042:     function ToSyllabus() {
 9043:         var cdom = '."'$dom'".';
 9044:         var cnum = document.rules.courseid.value;
 9045:         if (cdom == "" || cdom == null) {
 9046:             return;
 9047:         }
 9048:         if (cnum == "" || cnum == null) {
 9049:            return;
 9050:         }
 9051:         syllwin=window.open("/public/"+cdom+"/"+cnum+"/syllabus","LONCAPASyllabus",
 9052:                             "height=350,width=350,scrollbars=yes,menubar=no");
 9053:         return;
 9054:     }
 9055: 
 9056:     '.$formatjs.'
 9057: '));
 9058:     $r->print('
 9059: <h3>'.&mt('Send bubblesheet data to a course').'</h3>
 9060: 
 9061: <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
 9062: '.$default_form_data.
 9063:   &Apache::lonhtmlcommon::start_pick_box().
 9064:   &Apache::lonhtmlcommon::row_title(&mt('Course ID')).
 9065:   '<input name="courseid" type="text" size="30" />'.$select_link.
 9066:   &Apache::lonhtmlcommon::row_closure().
 9067:   &Apache::lonhtmlcommon::row_title(&mt('Course Name')).
 9068:   '<input name="coursename" type="text" size="30" />'.$syllabuslink.
 9069:   &Apache::lonhtmlcommon::row_closure().
 9070:   &Apache::lonhtmlcommon::row_title(&mt('Domain')).
 9071:   '<input name="domainid" type="hidden" />'.$domdesc.
 9072:   &Apache::lonhtmlcommon::row_closure());
 9073:     if ($formatoptions) {
 9074:         $r->print(&Apache::lonhtmlcommon::row_title($formattitle).$formatoptions.
 9075:                   &Apache::lonhtmlcommon::row_closure());
 9076:     }
 9077:     $r->print(
 9078:   &Apache::lonhtmlcommon::row_title(&mt('File to upload')).
 9079:   '<input type="file" name="upfile" size="50" />'.
 9080:   &Apache::lonhtmlcommon::row_closure(1).
 9081:   &Apache::lonhtmlcommon::end_pick_box().'<br />
 9082: 
 9083: <input name="command" value="scantronupload_save" type="hidden" />
 9084: <input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
 9085: </form>
 9086: ');
 9087:     return '';
 9088: }
 9089: 
 9090: sub scantron_upload_dataformat {
 9091:     my ($dom) = @_;
 9092:     my ($formatoptions,$formattitle,$formatjs);
 9093:     $formatjs = <<'END';
 9094: function toggleScantab(form) {
 9095:    return;
 9096: }
 9097: END
 9098:     my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$dom);
 9099:     if (ref($domconfig{'scantron'}) eq 'HASH') {
 9100:         if (ref($domconfig{'scantron'}{'config'}) eq 'HASH') {
 9101:             if (keys(%{$domconfig{'scantron'}{'config'}}) > 1) {
 9102:                 if (($domconfig{'scantron'}{'config'}{'dat'}) &&
 9103:                     (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH')) {
 9104:                     if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {  
 9105:                         if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}})) {
 9106:                             my ($onclick,$formatextra,$singleline);
 9107:                             my @lines = &Apache::lonnet::get_scantronformat_file();
 9108:                             my $count = 0;
 9109:                             foreach my $line (@lines) {
 9110:                                 next if ($line =~ /^#/);
 9111:                                 $singleline = $line;
 9112:                                 $count ++;
 9113:                             }
 9114:                             if ($count > 1) {
 9115:                                 $formatextra = '<div style="display:none" id="bubbletype">'.
 9116:                                                '<span class="LC_nobreak">'.
 9117:                                                &mt('Bubblesheet type:').'&nbsp;'.
 9118:                                                &scantron_scantab().'</span></div>';
 9119:                                 $onclick = ' onclick="toggleScantab(this.form);"';
 9120:                                 $formatjs = <<"END";
 9121: function toggleScantab(form) {
 9122:     var divid = 'bubbletype';
 9123:     if (document.getElementById(divid)) {
 9124:         var radioname = 'fileformat';
 9125:         var num = form.elements[radioname].length;
 9126:         if (num) {
 9127:             for (var i=0; i<num; i++) {
 9128:                 if (form.elements[radioname][i].checked) {
 9129:                     var chosen = form.elements[radioname][i].value;
 9130:                     if (chosen == 'dat') {
 9131:                         document.getElementById(divid).style.display = 'none';
 9132:                     } else if (chosen == 'csv') {
 9133:                         document.getElementById(divid).style.display = 'block';
 9134:                     }
 9135:                 }
 9136:             }
 9137:         }
 9138:     }
 9139:     return;
 9140: }
 9141: 
 9142: END
 9143:                             } elsif ($count == 1) {
 9144:                                 my $formatname = (split(/:/,$singleline,2))[0];
 9145:                                 $formatextra = '<input type="hidden" name="scantron_format" value="'.$formatname.'" />';
 9146:                             }
 9147:                             $formattitle = &mt('File format');
 9148:                             $formatoptions = '<label><input name="fileformat" type="radio" value="dat" checked="checked"'.$onclick.' />'.
 9149:                                              &mt('Plain Text (no delimiters)').
 9150:                                              '</label>'.('&nbsp;'x2).
 9151:                                              '<label><input name="fileformat" type="radio" value="csv"'.$onclick.' />'.
 9152:                                              &mt('Comma separated values').'</label>'.$formatextra;
 9153:                         }
 9154:                     }
 9155:                 }
 9156:             } elsif (keys(%{$domconfig{'scantron'}{'config'}}) == 1) {
 9157:                 if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
 9158:                     if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}})) {
 9159:                         $formattitle = &mt('Bubblesheet type');
 9160:                         $formatoptions = &scantron_scantab();
 9161:                     }
 9162:                 }
 9163:             }
 9164:         }
 9165:     }
 9166:     return ($formatoptions,$formattitle,$formatjs);
 9167: }
 9168: 
 9169: sub scantron_upload_scantron_data_save {
 9170:     my($r,$symb)=@_;
 9171:     my $doanotherupload=
 9172: 	'<br /><form action="/adm/grades" method="post">'."\n".
 9173: 	'<input type="hidden" name="command" value="scantronupload" />'."\n".
 9174: 	'<input type="submit" name="submit" value="'.&mt('Do Another Upload').'" />'."\n".
 9175: 	'</form>'."\n";
 9176:     if (!&Apache::lonnet::allowed('usc',$env{'form.domainid'}) &&
 9177: 	!&Apache::lonnet::allowed('usc',
 9178: 			    $env{'form.domainid'}.'_'.$env{'form.courseid'})) {
 9179: 	$r->print(&mt("You are not allowed to upload bubblesheet data to the requested course.")."<br />");
 9180: 	unless ($symb) {
 9181: 	    $r->print($doanotherupload);
 9182: 	}
 9183: 	return '';
 9184:     }
 9185:     my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
 9186:     my $uploadedfile;
 9187:     $r->print('<p>'.&mt('Uploading file to [_1]','"'.$coursedata{'description'}.'"').'</p>');
 9188:     if (length($env{'form.upfile'}) < 2) {
 9189:         $r->print(
 9190:             &Apache::lonhtmlcommon::confirm_success(
 9191:                 &mt('The file: [_1] you attempted to upload contained no information. Please check that you entered the correct filename.',
 9192:                         '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'),1));
 9193:     } else {
 9194:         my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$env{'form.domainid'});
 9195:         my $parser;
 9196:         if (ref($domconfig{'scantron'}) eq 'HASH') {
 9197:             if (ref($domconfig{'scantron'}{'config'}) eq 'HASH') {
 9198:                 my $is_csv;
 9199:                 my @possibles = keys(%{$domconfig{'scantron'}{'config'}});
 9200:                 if (@possibles > 1) {
 9201:                     if ($env{'form.fileformat'} eq 'csv') {
 9202:                         if (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH') {
 9203:                             if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
 9204:                                 if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}}) > 1) {
 9205:                                     $is_csv = 1;
 9206:                                 }
 9207:                             }
 9208:                         }
 9209:                     }
 9210:                 } elsif (@possibles == 1) {
 9211:                     if (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH') {
 9212:                         if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
 9213:                             if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}}) > 1) {
 9214:                                 $is_csv = 1;
 9215:                             }
 9216:                         }
 9217:                     }
 9218:                 }
 9219:                 if ($is_csv) {
 9220:                    $parser = $domconfig{'scantron'}{'config'}{'csv'};
 9221:                 }
 9222:             }
 9223:         }
 9224:         my $result =
 9225:             &Apache::lonnet::userfileupload('upfile','scantron','scantron',$parser,'','',
 9226:                                             $env{'form.courseid'},$env{'form.domainid'});
 9227:         if ($result =~ m{^/uploaded/}) {
 9228:             $r->print(
 9229:                 &Apache::lonhtmlcommon::confirm_success(&mt('Upload successful')).'<br />'.
 9230:                 &mt('Uploaded [_1] bytes of data into location: [_2]',
 9231:                         (length($env{'form.upfile'})-1),
 9232:                         '<span class="LC_filename">'.$result.'</span>'));
 9233:             ($uploadedfile) = ($result =~ m{/([^/]+)$});
 9234:             $r->print(&validate_uploaded_scantron_file($env{'form.domainid'},
 9235:                                                        $env{'form.courseid'},$uploadedfile));
 9236:         } else {
 9237:             $r->print(
 9238:                 &Apache::lonhtmlcommon::confirm_success(&mt('Upload failed'),1).'<br />'.
 9239:                     &mt('An error ([_1]) occurred when attempting to upload the file: [_2]',
 9240:                           $result,
 9241: 			  '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'));
 9242: 	}
 9243:     }
 9244:     if ($symb) {
 9245: 	$r->print(&scantron_selectphase($r,$uploadedfile,$symb));
 9246:     } else {
 9247: 	$r->print($doanotherupload);
 9248:     }
 9249:     return '';
 9250: }
 9251: 
 9252: sub validate_uploaded_scantron_file {
 9253:     my ($cdom,$cname,$fname) = @_;
 9254:     my $scanlines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.$fname);
 9255:     my @lines;
 9256:     if ($scanlines ne '-1') {
 9257:         @lines=split("\n",$scanlines,-1);
 9258:     }
 9259:     my $output;
 9260:     if (@lines) {
 9261:         my (%counts,$max_match_format);
 9262:         my ($found_match_count,$max_match_count,$max_match_pct) = (0,0,0);
 9263:         my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cname);
 9264:         my %idmap = &username_to_idmap($classlist);
 9265:         foreach my $key (keys(%idmap)) {
 9266:             my $lckey = lc($key);
 9267:             $idmap{$lckey} = $idmap{$key};
 9268:         }
 9269:         my %unique_formats;
 9270:         my @formatlines = &Apache::lonnet::get_scantronformat_file();
 9271:         foreach my $line (@formatlines) {
 9272:             chomp($line);
 9273:             my @config = split(/:/,$line);
 9274:             my $idstart = $config[5];
 9275:             my $idlength = $config[6];
 9276:             if (($idstart ne '') && ($idlength > 0)) {
 9277:                 if (ref($unique_formats{$idstart.':'.$idlength}) eq 'ARRAY') {
 9278:                     push(@{$unique_formats{$idstart.':'.$idlength}},$config[0].':'.$config[1]); 
 9279:                 } else {
 9280:                     $unique_formats{$idstart.':'.$idlength} = [$config[0].':'.$config[1]];
 9281:                 }
 9282:             }
 9283:         }
 9284:         foreach my $key (keys(%unique_formats)) {
 9285:             my ($idstart,$idlength) = split(':',$key);
 9286:             %{$counts{$key}} = (
 9287:                                'found'   => 0,
 9288:                                'total'   => 0,
 9289:                               );
 9290:             foreach my $line (@lines) {
 9291:                 next if ($line =~ /^#/);
 9292:                 next if ($line =~ /^[\s\cz]*$/);
 9293:                 my $id = substr($line,$idstart-1,$idlength);
 9294:                 $id = lc($id);
 9295:                 if (exists($idmap{$id})) {
 9296:                     $counts{$key}{'found'} ++;
 9297:                 }
 9298:                 $counts{$key}{'total'} ++;
 9299:             }
 9300:             if ($counts{$key}{'total'}) {
 9301:                 my $percent_match = (100*$counts{$key}{'found'})/($counts{$key}{'total'});
 9302:                 if (($max_match_format eq '') || ($percent_match > $max_match_pct)) {
 9303:                     $max_match_pct = $percent_match;
 9304:                     $max_match_format = $key;
 9305:                     $found_match_count = $counts{$key}{'found'};
 9306:                     $max_match_count = $counts{$key}{'total'};
 9307:                 }
 9308:             }
 9309:         }
 9310:         if (ref($unique_formats{$max_match_format}) eq 'ARRAY') {
 9311:             my $format_descs;
 9312:             my $numwithformat = @{$unique_formats{$max_match_format}};
 9313:             for (my $i=0; $i<$numwithformat; $i++) {
 9314:                 my ($name,$desc) = split(':',$unique_formats{$max_match_format}[$i]);
 9315:                 if ($i<$numwithformat-2) {
 9316:                     $format_descs .= '"<i>'.$desc.'</i>", ';
 9317:                 } elsif ($i==$numwithformat-2) {
 9318:                     $format_descs .= '"<i>'.$desc.'</i>" '.&mt('and').' ';
 9319:                 } elsif ($i==$numwithformat-1) {
 9320:                     $format_descs .= '"<i>'.$desc.'</i>"';
 9321:                 }
 9322:             }
 9323:             my $showpct = sprintf("%.0f",$max_match_pct).'%';
 9324:             $output .= '<br />';
 9325:             if ($found_match_count == $max_match_count) {
 9326:                 # 100% matching entries
 9327:                 $output .= &Apache::lonhtmlcommon::confirm_success(
 9328:                      &mt('Comparison of student IDs: [_1] matching ([quant,_2,entry,entries])',
 9329:                             '<b>'.$showpct.'</b>',$found_match_count)).'<br />'.
 9330:                 &mt('Comparison of student IDs in the uploaded file with'.
 9331:                     ' the course roster found matches for [_1] of the [_2] entries'.
 9332:                     ' in the file (for the format defined for [_3]).',
 9333:                         '<b>'.$showpct.'</b>','<b>'.$max_match_count.'</b>',$format_descs);
 9334:             } else {
 9335:                 # Not all entries matching? -> Show warning and additional info
 9336:                 $output .=
 9337:                     &Apache::lonhtmlcommon::confirm_success(
 9338:                         &mt('Comparison of student IDs: [_1] matching ([_2]/[quant,_3,entry,entries])',
 9339:                                 '<b>'.$showpct.'</b>',$found_match_count,$max_match_count).'<br />'.
 9340:                         &mt('Not all entries could be matched!'),1).'<br />'.
 9341:                     &mt('Comparison of student IDs in the uploaded file with'.
 9342:                         ' the course roster found matches for [_1] of the [_2] entries'.
 9343:                         ' in the file (for the format defined for [_3]).',
 9344:                             '<b>'.$showpct.'</b>','<b>'.$max_match_count.'</b>',$format_descs).
 9345:                     '<p class="LC_info">'.
 9346:                     &mt('A low percentage of matches results from one of the following:').
 9347:                     '</p><ul>'.
 9348:                     '<li>'.&mt('The file was uploaded to the wrong course.').'</li>'.
 9349:                     '<li>'.&mt('The data is not in the format expected for the domain: [_1]',
 9350:                                '<i>'.$cdom.'</i>').'</li>'.
 9351:                     '<li>'.&mt('Students did not bubble their IDs, or mis-bubbled them').'</li>'.
 9352:                     '<li>'.&mt('The course roster is not up to date.').'</li>'.
 9353:                     '</ul>';
 9354:             }
 9355:         }
 9356:     } else {
 9357:         $output = '<p class="LC_warning">'.&mt('Uploaded file contained no data').'</p>';
 9358:     }
 9359:     return $output;
 9360: }
 9361: 
 9362: sub valid_file {
 9363:     my ($requested_file)=@_;
 9364:     foreach my $filename (sort(&scantron_filenames())) {
 9365: 	if ($requested_file eq $filename) { return 1; }
 9366:     }
 9367:     return 0;
 9368: }
 9369: 
 9370: sub scantron_download_scantron_data {
 9371:     my ($r,$symb)=@_;
 9372:     my $default_form_data=&defaultFormData($symb);
 9373:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 9374:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 9375:     my $file=$env{'form.scantron_selectfile'};
 9376:     if (! &valid_file($file)) {
 9377: 	$r->print('
 9378: 	<p>
 9379: 	    '.&mt('The requested filename was invalid.').'
 9380:         </p>
 9381: ');
 9382: 	return;
 9383:     }
 9384:     my $orig='/uploaded/'.$cdom.'/'.$cname.'/scantron_orig_'.$file;
 9385:     my $corrected='/uploaded/'.$cdom.'/'.$cname.'/scantron_corrected_'.$file;
 9386:     my $skipped='/uploaded/'.$cdom.'/'.$cname.'/scantron_skipped_'.$file;
 9387:     &Apache::lonnet::allowuploaded('/adm/grades',$orig);
 9388:     &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
 9389:     &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
 9390:     $r->print('
 9391:     <p>
 9392: 	'.&mt('[_1]Original[_2] file as uploaded by the bubblesheet scanning office.',
 9393: 	      '<a href="'.$orig.'">','</a>').'
 9394:     </p>
 9395:     <p>
 9396: 	'.&mt('[_1]Corrections[_2], a file of corrected records that were used in grading.',
 9397: 	      '<a href="'.$corrected.'">','</a>').'
 9398:     </p>
 9399:     <p>
 9400: 	'.&mt('[_1]Skipped[_2], a file of records that were skipped.',
 9401: 	      '<a href="'.$skipped.'">','</a>').'
 9402:     </p>
 9403: ');
 9404:     return '';
 9405: }
 9406: 
 9407: sub checkscantron_results {
 9408:     my ($r,$symb) = @_;
 9409:     if (!$symb) {return '';}
 9410:     my $cid = $env{'request.course.id'};
 9411:     my %lettdig = &Apache::lonnet::letter_to_digits();
 9412:     my $numletts = scalar(keys(%lettdig));
 9413:     my $cnum = $env{'course.'.$cid.'.num'};
 9414:     my $cdom = $env{'course.'.$cid.'.domain'};
 9415:     my (undef, undef, $sequence) = &Apache::lonnet::decode_symb($env{'form.selectpage'});
 9416:     my %record;
 9417:     my %scantron_config =
 9418:         &Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 9419:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 9420:     my ($scanlines,$scan_data)=&Apache::grades::scantron_getfile();
 9421:     my $classlist=&Apache::loncoursedata::get_classlist();
 9422:     my %idmap=&Apache::grades::username_to_idmap($classlist);
 9423:     my $navmap=Apache::lonnavmaps::navmap->new();
 9424:     unless (ref($navmap)) {
 9425:         $r->print(&navmap_errormsg());
 9426:         return '';
 9427:     }
 9428:     my $map=$navmap->getResourceByUrl($sequence);
 9429:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 9430:         %grader_randomlists_by_symb,%orderedforcode);
 9431:     if (ref($map)) { 
 9432:         $randomorder=$map->randomorder();
 9433:         $randompick=$map->randompick();
 9434:     }
 9435:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 9436:     my $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 9437:     if ($nav_error) {
 9438:         $r->print(&navmap_errormsg());
 9439:         return '';
 9440:     }
 9441:     &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 9442:                             \%grader_randomlists_by_symb,$bubbles_per_row);
 9443:     my ($uname,$udom);
 9444:     my (%scandata,%lastname,%bylast);
 9445:     $r->print('
 9446: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="checkscantron">'."\n");
 9447: 
 9448:     my @delayqueue;
 9449:     my %completedstudents;
 9450: 
 9451:     my $count=&get_todo_count($scanlines,$scan_data);
 9452:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$count);
 9453:     my ($username,$domain,$started);
 9454:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # Need the bubble lines array to parse.
 9455:     if ($nav_error) {
 9456:         $r->print(&navmap_errormsg());
 9457:         return '';
 9458:     }
 9459: 
 9460:     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,'Processing first student');
 9461:     my $start=&Time::HiRes::time();
 9462:     my $i=-1;
 9463: 
 9464:     while ($i<$scanlines->{'count'}) {
 9465:         ($username,$domain,$uname)=('','','');
 9466:         $i++;
 9467:         my $line=&Apache::grades::scantron_get_line($scanlines,$scan_data,$i);
 9468:         if ($line=~/^[\s\cz]*$/) { next; }
 9469:         if ($started) {
 9470:             &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
 9471:         }
 9472:         $started=1;
 9473:         my $scan_record=
 9474:             &Apache::grades::scantron_parse_scanline($line,$i,\%scantron_config,
 9475:                                                      $scan_data);
 9476:         unless ($uname=&scantron_find_student($scan_record,$scan_data,
 9477:                                               \%idmap,$i)) {
 9478:             &Apache::grades::scantron_add_delay(\@delayqueue,$line,
 9479:                                 'Unable to find a student that matches',1);
 9480:             next;
 9481:         }
 9482:         if (exists $completedstudents{$uname}) {
 9483:             &Apache::grades::scantron_add_delay(\@delayqueue,$line,
 9484:                                 'Student '.$uname.' has multiple sheets',2);
 9485:             next;
 9486:         }
 9487:         my $pid = $scan_record->{'scantron.ID'};
 9488:         $lastname{$pid} = $scan_record->{'scantron.LastName'};
 9489:         push(@{$bylast{$lastname{$pid}}},$pid);
 9490:         my $usec = $classlist->{$uname}->[&Apache::loncoursedata::CL_SECTION];
 9491:         my $user = $uname.':'.$usec;
 9492:         ($username,$domain)=split(/:/,$uname);
 9493: 
 9494:         my $scancode;
 9495:         if ((exists($scan_record->{'scantron.CODE'})) &&
 9496:             (&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'}))) {
 9497:             $scancode = $scan_record->{'scantron.CODE'};
 9498:         } else {
 9499:             $scancode = '';
 9500:         }
 9501: 
 9502:         my @mapresources = @resources;
 9503:         my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
 9504:         my %respnumlookup=();
 9505:         my %startline=();
 9506:         if ($randomorder || $randompick) {
 9507:             @mapresources =
 9508:                 &users_order($user,$scancode,$sequence,\@master_seq,\%symb_to_resource,
 9509:                              \%orderedforcode);
 9510:             my $total = &get_respnum_lookups($sequence,$scan_data,\%idmap,$line,
 9511:                                              $scan_record,\@master_seq,\%symb_to_resource,
 9512:                                              \%grader_partids_by_symb,\%orderedforcode,
 9513:                                              \%respnumlookup,\%startline);
 9514:             if ($randompick && $total) {
 9515:                 $lastpos = $total*$scantron_config{'Qlength'};
 9516:             }
 9517:         }
 9518:         $scandata{$pid} = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
 9519:         chomp($scandata{$pid});
 9520:         $scandata{$pid} =~ s/\r$//;
 9521: 
 9522:         my $counter = -1;
 9523:         foreach my $resource (@mapresources) {
 9524:             my $parts;
 9525:             my $ressymb = $resource->symb();
 9526:             if ((exists($grader_randomlists_by_symb{$ressymb})) ||
 9527:                 (ref($grader_partids_by_symb{$ressymb}) ne 'ARRAY')) {
 9528:                 my $currcode;
 9529:                 if (exists($grader_randomlists_by_symb{$ressymb})) {
 9530:                     $currcode = $scancode;
 9531:                 }
 9532:                 (my $analysis,$parts) =
 9533:                     &scantron_partids_tograde($resource,$env{'request.course.id'},
 9534:                                               $username,$domain,undef,
 9535:                                               $bubbles_per_row,$currcode);
 9536:             } else {
 9537:                 $parts = $grader_partids_by_symb{$ressymb};
 9538:             }
 9539:             ($counter,my $recording) =
 9540:                 &verify_scantron_grading($resource,$domain,$username,$cid,$counter,
 9541:                                          $scandata{$pid},$parts,
 9542:                                          \%scantron_config,\%lettdig,$numletts,
 9543:                                          $randomorder,$randompick,
 9544:                                          \%respnumlookup,\%startline);
 9545:             $record{$pid} .= $recording;
 9546:         }
 9547:     }
 9548:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 9549:     $r->print('<br />');
 9550:     my ($okstudents,$badstudents,$numstudents,$passed,$failed);
 9551:     $passed = 0;
 9552:     $failed = 0;
 9553:     $numstudents = 0;
 9554:     foreach my $last (sort(keys(%bylast))) {
 9555:         if (ref($bylast{$last}) eq 'ARRAY') {
 9556:             foreach my $pid (sort(@{$bylast{$last}})) {
 9557:                 my $showscandata = $scandata{$pid};
 9558:                 my $showrecord = $record{$pid};
 9559:                 $showscandata =~ s/\s/&nbsp;/g;
 9560:                 $showrecord =~ s/\s/&nbsp;/g;
 9561:                 if ($scandata{$pid} eq $record{$pid}) {
 9562:                     my $css_class = ($passed % 2)?'LC_odd_row':'LC_even_row';
 9563:                     $okstudents .= '<tr class="'.$css_class.'">'.
 9564: '<td>'.&mt('Bubblesheet').'</td><td>'.$showscandata.'</td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 9565: '</tr>'."\n".
 9566: '<tr class="'.$css_class.'">'."\n".
 9567: '<td>'.&mt('Submissions').'</td><td>'.$showrecord.'</td></tr>'."\n";
 9568:                     $passed ++;
 9569:                 } else {
 9570:                     my $css_class = ($failed % 2)?'LC_odd_row':'LC_even_row';
 9571:                     $badstudents .= '<tr class="'.$css_class.'"><td>'.&mt('Bubblesheet').'</td><td><span class="LC_nobreak">'.$scandata{$pid}.'</span></td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 9572: '</tr>'."\n".
 9573: '<tr class="'.$css_class.'">'."\n".
 9574: '<td>'.&mt('Submissions').'</td><td><span class="LC_nobreak">'.$record{$pid}.'</span></td>'."\n".
 9575: '</tr>'."\n";
 9576:                     $failed ++;
 9577:                 }
 9578:                 $numstudents ++;
 9579:             }
 9580:         }
 9581:     }
 9582:     $r->print(
 9583:         '<p>'
 9584:        .&mt('Comparison of bubblesheet data (including corrections) with corresponding submission records (most recent submission) for [_1][quant,_2,student][_3] ([quant,_4,bubblesheet line] per student).',
 9585:             '<b>',
 9586:             $numstudents,
 9587:             '</b>',
 9588:             $env{'form.scantron_maxbubble'})
 9589:        .'</p>'
 9590:     );
 9591:     $r->print('<p>'
 9592:              .&mt('Exact matches for [_1][quant,_2,student][_3].','<b>',$passed,'</b>')
 9593:              .'<br />'
 9594:              .&mt('Discrepancies detected for [_1][quant,_2,student][_3].','<b>',$failed,'</b>')
 9595:              .'</p>'
 9596:     );
 9597:     if ($passed) {
 9598:         $r->print(&mt('Students with exact correspondence between bubblesheet data and submissions are as follows:').'<br /><br />');
 9599:         $r->print(&Apache::loncommon::start_data_table()."\n".
 9600:                  &Apache::loncommon::start_data_table_header_row()."\n".
 9601:                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
 9602:                  &Apache::loncommon::end_data_table_header_row()."\n".
 9603:                  $okstudents."\n".
 9604:                  &Apache::loncommon::end_data_table().'<br />');
 9605:     }
 9606:     if ($failed) {
 9607:         $r->print(&mt('Students with differences between bubblesheet data and submissions are as follows:').'<br /><br />');
 9608:         $r->print(&Apache::loncommon::start_data_table()."\n".
 9609:                  &Apache::loncommon::start_data_table_header_row()."\n".
 9610:                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
 9611:                  &Apache::loncommon::end_data_table_header_row()."\n".
 9612:                  $badstudents."\n".
 9613:                  &Apache::loncommon::end_data_table()).'<br />'.
 9614:                  &mt('Differences can occur if submissions were modified using manual grading after a bubblesheet grading pass.').'<br />'.&mt('If unexpected discrepancies were detected, it is recommended that you inspect the original bubblesheets.');  
 9615:     }
 9616:     $r->print('</form><br />');
 9617:     return;
 9618: }
 9619: 
 9620: sub verify_scantron_grading {
 9621:     my ($resource,$domain,$username,$cid,$counter,$scandata,$partids,
 9622:         $scantron_config,$lettdig,$numletts,$randomorder,$randompick,
 9623:         $respnumlookup,$startline) = @_;
 9624:     my ($record,%expected,%startpos);
 9625:     return ($counter,$record) if (!ref($resource));
 9626:     return ($counter,$record) if (!$resource->is_problem());
 9627:     my $symb = $resource->symb();
 9628:     return ($counter,$record) if (ref($partids) ne 'ARRAY');
 9629:     foreach my $part_id (@{$partids}) {
 9630:         $counter ++;
 9631:         $expected{$part_id} = 0;
 9632:         my $respnum = $counter;
 9633:         if ($randomorder || $randompick) {
 9634:             $respnum = $respnumlookup->{$counter};
 9635:             $startpos{$part_id} = $startline->{$counter} + 1;
 9636:         } else {
 9637:             $startpos{$part_id} = $env{"form.scantron.first_bubble_line.$counter"};
 9638:         }
 9639:         if ($env{"form.scantron.sub_bubblelines.$respnum"}) {
 9640:             my @sub_lines = split(/,/,$env{"form.scantron.sub_bubblelines.$respnum"});
 9641:             foreach my $item (@sub_lines) {
 9642:                 $expected{$part_id} += $item;
 9643:             }
 9644:         } else {
 9645:             $expected{$part_id} = $env{"form.scantron.bubblelines.$respnum"};
 9646:         }
 9647:     }
 9648:     if ($symb) {
 9649:         my %recorded;
 9650:         my (%returnhash) = &Apache::lonnet::restore($symb,$cid,$domain,$username);
 9651:         if ($returnhash{'version'}) {
 9652:             my %lasthash=();
 9653:             my $version;
 9654:             for ($version=1;$version<=$returnhash{'version'};$version++) {
 9655:                 foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
 9656:                     $lasthash{$key}=$returnhash{$version.':'.$key};
 9657:                 }
 9658:             }
 9659:             foreach my $key (keys(%lasthash)) {
 9660:                 if ($key =~ /\.scantron$/) {
 9661:                     my $value = &unescape($lasthash{$key});
 9662:                     my ($part_id) = ($key =~ /^resource\.(.+)\.scantron$/);
 9663:                     if ($value eq '') {
 9664:                         for (my $i=0; $i<$expected{$part_id}; $i++) {
 9665:                             for (my $j=0; $j<$scantron_config->{'length'}; $j++) {
 9666:                                 $recorded{$part_id} .= $scantron_config->{'Qoff'};
 9667:                             }
 9668:                         }
 9669:                     } else {
 9670:                         my @tocheck;
 9671:                         my @items = split(//,$value);
 9672:                         if (($scantron_config->{'Qon'} eq 'letter') ||
 9673:                             ($scantron_config->{'Qon'} eq 'number')) {
 9674:                             if (@items < $expected{$part_id}) {
 9675:                                 my $fragment = substr($scandata,$startpos{$part_id},$expected{$part_id});
 9676:                                 my @singles = split(//,$fragment);
 9677:                                 foreach my $pos (@singles) {
 9678:                                     if ($pos eq ' ') {
 9679:                                         push(@tocheck,$pos);
 9680:                                     } else {
 9681:                                         my $next = shift(@items);
 9682:                                         push(@tocheck,$next);
 9683:                                     }
 9684:                                 }
 9685:                             } else {
 9686:                                 @tocheck = @items;
 9687:                             }
 9688:                             foreach my $letter (@tocheck) {
 9689:                                 if ($scantron_config->{'Qon'} eq 'letter') {
 9690:                                     if ($letter !~ /^[A-J]$/) {
 9691:                                         $letter = $scantron_config->{'Qoff'};
 9692:                                     }
 9693:                                     $recorded{$part_id} .= $letter;
 9694:                                 } elsif ($scantron_config->{'Qon'} eq 'number') {
 9695:                                     my $digit;
 9696:                                     if ($letter !~ /^[A-J]$/) {
 9697:                                         $digit = $scantron_config->{'Qoff'};
 9698:                                     } else {
 9699:                                         $digit = $lettdig->{$letter};
 9700:                                     }
 9701:                                     $recorded{$part_id} .= $digit;
 9702:                                 }
 9703:                             }
 9704:                         } else {
 9705:                             @tocheck = @items;
 9706:                             for (my $i=0; $i<$expected{$part_id}; $i++) {
 9707:                                 my $curr_sub = shift(@tocheck);
 9708:                                 my $digit;
 9709:                                 if ($curr_sub =~ /^[A-J]$/) {
 9710:                                     $digit = $lettdig->{$curr_sub}-1;
 9711:                                 }
 9712:                                 if ($curr_sub eq 'J') {
 9713:                                     $digit += scalar($numletts);
 9714:                                 }
 9715:                                 for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
 9716:                                     if ($j == $digit) {
 9717:                                         $recorded{$part_id} .= $scantron_config->{'Qon'};
 9718:                                     } else {
 9719:                                         $recorded{$part_id} .= $scantron_config->{'Qoff'};
 9720:                                     }
 9721:                                 }
 9722:                             }
 9723:                         }
 9724:                     }
 9725:                 }
 9726:             }
 9727:         }
 9728:         foreach my $part_id (@{$partids}) {
 9729:             if ($recorded{$part_id} eq '') {
 9730:                 for (my $i=0; $i<$expected{$part_id}; $i++) {
 9731:                     for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
 9732:                         $recorded{$part_id} .= $scantron_config->{'Qoff'};
 9733:                     }
 9734:                 }
 9735:             }
 9736:             $record .= $recorded{$part_id};
 9737:         }
 9738:     }
 9739:     return ($counter,$record);
 9740: }
 9741: 
 9742: 
 9743: #-------- end of section for handling grading scantron forms -------
 9744: #
 9745: #-------------------------------------------------------------------
 9746: 
 9747: #-------------------------- Menu interface -------------------------
 9748: #
 9749: #--- Href with symb and command ---
 9750: 
 9751: sub href_symb_cmd {
 9752:     my ($symb,$cmd)=@_;
 9753:     return '/adm/grades?symb='.&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb),'<>&"').'&amp;command='.$cmd;
 9754: }
 9755: 
 9756: sub grading_menu {
 9757:     my ($request,$symb) = @_;
 9758:     if (!$symb) {return '';}
 9759: 
 9760:     my %fields = ('symb'=>&Apache::lonenc::check_encrypt($symb),
 9761:                   'command'=>'individual');
 9762:     
 9763:     my $url1a = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9764: 
 9765:     $fields{'command'}='ungraded';
 9766:     my $url1b=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9767: 
 9768:     $fields{'command'}='table';
 9769:     my $url1c=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9770: 
 9771:     $fields{'command'}='all_for_one';
 9772:     my $url1d=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9773: 
 9774:     $fields{'command'}='downloadfilesselect';
 9775:     my $url1e=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9776: 
 9777:     $fields{'command'} = 'csvform';
 9778:     my $url2 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9779:     
 9780:     $fields{'command'} = 'processclicker';
 9781:     my $url3 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9782:     
 9783:     $fields{'command'} = 'scantron_selectphase';
 9784:     my $url4 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9785: 
 9786:     $fields{'command'} = 'initialverifyreceipt';
 9787:     my $url5 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9788:     
 9789:     my @menu = ({	categorytitle=>'Hand Grading',
 9790:             items =>[
 9791:                         {	linktext => 'Select individual students to grade',
 9792:                     		url => $url1a,
 9793:                     		permission => 'F',
 9794:                     		icon => 'grade_students.png',
 9795:                     		linktitle => 'Grade current resource for a selection of students.'
 9796:                         }, 
 9797:                         {       linktext => 'Grade ungraded submissions',
 9798:                                 url => $url1b,
 9799:                                 permission => 'F',
 9800:                                 icon => 'ungrade_sub.png',
 9801:                                 linktitle => 'Grade all submissions that have not been graded yet.'
 9802:                         },
 9803: 
 9804:                         {       linktext => 'Grading table',
 9805:                                 url => $url1c,
 9806:                                 permission => 'F',
 9807:                                 icon => 'grading_table.png',
 9808:                                 linktitle => 'Grade current resource for all students.'
 9809:                         },
 9810:                         {       linktext => 'Grade page/folder for one student',
 9811:                                 url => $url1d,
 9812:                                 permission => 'F',
 9813:                                 icon => 'grade_PageFolder.png',
 9814:                                 linktitle => 'Grade all resources in current page/sequence/folder for one student.'
 9815:                         },
 9816:                         {       linktext => 'Download submissions',
 9817:                                 url => $url1e,
 9818:                                 permission => 'F',
 9819:                                 icon => 'download_sub.png',
 9820:                                 linktitle => 'Download all students submissions.'
 9821:                         }]},
 9822:                          { categorytitle=>'Automated Grading',
 9823:                items =>[
 9824: 
 9825:                 	    {	linktext => 'Upload Scores',
 9826:                     		url => $url2,
 9827:                     		permission => 'F',
 9828:                     		icon => 'uploadscores.png',
 9829:                     		linktitle => 'Specify a file containing the class scores for current resource.'
 9830:                 	    },
 9831:                 	    {	linktext => 'Process Clicker',
 9832:                     		url => $url3,
 9833:                     		permission => 'F',
 9834:                     		icon => 'addClickerInfoFile.png',
 9835:                     		linktitle => 'Specify a file containing the clicker information for this resource.'
 9836:                 	    },
 9837:                 	    {	linktext => 'Grade/Manage/Review Bubblesheets',
 9838:                     		url => $url4,
 9839:                     		permission => 'F',
 9840:                     		icon => 'bubblesheet.png',
 9841:                     		linktitle => 'Grade bubblesheet exams, upload/download bubblesheet data files, and review previously graded bubblesheet exams.'
 9842:                 	    },
 9843:                             {   linktext => 'Verify Receipt Number',
 9844:                                 url => $url5,
 9845:                                 permission => 'F',
 9846:                                 icon => 'receipt_number.png',
 9847:                                 linktitle => 'Verify a system-generated receipt number for correct problem solution.'
 9848:                             }
 9849: 
 9850:                     ]
 9851:             });
 9852: 
 9853:     # Create the menu
 9854:     my $Str;
 9855:     $Str .= '<form method="post" action="" name="gradingMenu">';
 9856:     $Str .= '<input type="hidden" name="command" value="" />'.
 9857:     	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9858: 
 9859:     $Str .= &Apache::lonhtmlcommon::generate_menu(@menu);
 9860:     return $Str;    
 9861: }
 9862: 
 9863: 
 9864: sub ungraded {
 9865:     my ($request)=@_;
 9866:     &submit_options($request);
 9867: }
 9868: 
 9869: sub submit_options_sequence {
 9870:     my ($request,$symb) = @_;
 9871:     if (!$symb) {return '';}
 9872:     &commonJSfunctions($request);
 9873:     my $result;
 9874: 
 9875:     $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9876:         '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9877:     $result.=&selectfield(0).
 9878:             '<input type="hidden" name="command" value="pickStudentPage" />
 9879:             <div>
 9880:               <input type="submit" value="'.&mt('Next').' &rarr;" />
 9881:             </div>
 9882:         </div>
 9883:   </form>';
 9884:     return $result;
 9885: }
 9886: 
 9887: sub submit_options_table {
 9888:     my ($request,$symb) = @_;
 9889:     if (!$symb) {return '';}
 9890:     &commonJSfunctions($request);
 9891:     my $is_tool = ($symb =~ /ext\.tool$/);
 9892:     my $result;
 9893: 
 9894:     $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9895:         '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9896: 
 9897:     $result.=&selectfield(1,$is_tool).
 9898:             '<input type="hidden" name="command" value="viewgrades" />
 9899:             <div>
 9900:               <input type="submit" value="'.&mt('Next').' &rarr;" />
 9901:             </div>
 9902:         </div>
 9903:   </form>';
 9904:     return $result;
 9905: }
 9906: 
 9907: sub submit_options_download {
 9908:     my ($request,$symb) = @_;
 9909:     if (!$symb) {return '';}
 9910: 
 9911:     my $is_tool = ($symb =~ /ext\.tool$/);
 9912:     &commonJSfunctions($request);
 9913: 
 9914:     my $result='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9915:         '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9916:     $result.='
 9917: <h2>
 9918:   '.&mt('Select Students for whom to Download Submissions').'
 9919: </h2>'.&selectfield(1,$is_tool).'
 9920:                 <input type="hidden" name="command" value="downloadfileslink" /> 
 9921:               <input type="submit" value="'.&mt('Next').' &rarr;" />
 9922:             </div>
 9923:           </div>
 9924: 
 9925: 
 9926:   </form>';
 9927:     return $result;
 9928: }
 9929: 
 9930: #--- Displays the submissions first page -------
 9931: sub submit_options {
 9932:     my ($request,$symb) = @_;
 9933:     if (!$symb) {return '';}
 9934: 
 9935:     my $is_tool = ($symb =~ /ext\.tool$/);
 9936:     &commonJSfunctions($request);
 9937:     my $result;
 9938: 
 9939:     $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9940: 	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9941:     $result.=&selectfield(1,$is_tool).'
 9942:                 <input type="hidden" name="command" value="submission" /> 
 9943: 	      <input type="submit" value="'.&mt('Next').' &rarr;" />
 9944:             </div>
 9945:           </div>
 9946: 
 9947: 
 9948:   </form>';
 9949:     return $result;
 9950: }
 9951: 
 9952: sub selectfield {
 9953:    my ($full,$is_tool)=@_;
 9954:    my %options;
 9955:    if ($is_tool) {
 9956:        %options =
 9957:            (&transtatus_options,
 9958:             'select_form_order' => ['yes','incorrect','all']);
 9959:    } else {
 9960:        %options = 
 9961:            (&substatus_options,
 9962:             'select_form_order' => ['yes','queued','graded','incorrect','all']);
 9963:    }
 9964:    my $result='<div class="LC_columnSection">
 9965:   
 9966:     <fieldset>
 9967:       <legend>
 9968:        '.&mt('Sections').'
 9969:       </legend>
 9970:       '.&Apache::lonstatistics::SectionSelect('section','multiple',5).'
 9971:     </fieldset>
 9972:   
 9973:     <fieldset>
 9974:       <legend>
 9975:         '.&mt('Groups').'
 9976:       </legend>
 9977:       '.&Apache::lonstatistics::GroupSelect('group','multiple',5).'
 9978:     </fieldset>
 9979:   
 9980:     <fieldset>
 9981:       <legend>
 9982:         '.&mt('Access Status').'
 9983:       </legend>
 9984:       '.&Apache::lonhtmlcommon::StatusOptions(undef,undef,5,undef,'mult').'
 9985:     </fieldset>';
 9986:     if ($full) {
 9987:         my $heading = &mt('Submission Status');
 9988:         if ($is_tool) {
 9989:             $heading = &mt('Transaction Status');
 9990:         }
 9991:         $result.='
 9992:     <fieldset>
 9993:       <legend>
 9994:         '.$heading.'
 9995:       </legend>'.
 9996:        &Apache::loncommon::select_form('all','submitonly',\%options).
 9997:    '</fieldset>';
 9998:     }
 9999:     $result.='</div><br />';
10000:     return $result;
10001: }
10002: 
10003: sub substatus_options {
10004:     return &Apache::lonlocal::texthash(
10005:                                       'yes'       => 'with submissions',
10006:                                       'queued'    => 'in grading queue',
10007:                                       'graded'    => 'with ungraded submissions',
10008:                                       'incorrect' => 'with incorrect submissions',
10009:                                       'all'       => 'with any status',
10010:                                       );
10011: }
10012: 
10013: sub transtatus_options {
10014:     return &Apache::lonlocal::texthash(
10015:                                        'yes'       => 'with score transactions',
10016:                                        'incorrect' => 'with less than full credit',
10017:                                        'all'       => 'with any status',
10018:                                       );
10019: }
10020: 
10021: sub reset_perm {
10022:     undef(%perm);
10023: }
10024: 
10025: sub init_perm {
10026:     &reset_perm();
10027:     foreach my $test_perm ('vgr','mgr','opa') {
10028: 
10029: 	my $scope = $env{'request.course.id'};
10030: 	if (!($perm{$test_perm}=&Apache::lonnet::allowed($test_perm,$scope))) {
10031: 
10032: 	    $scope .= '/'.$env{'request.course.sec'};
10033: 	    if ( $perm{$test_perm}=
10034: 		 &Apache::lonnet::allowed($test_perm,$scope)) {
10035: 		$perm{$test_perm.'_section'}=$env{'request.course.sec'};
10036: 	    } else {
10037: 		delete($perm{$test_perm});
10038: 	    }
10039: 	}
10040:     }
10041: }
10042: 
10043: sub init_old_essays {
10044:     my ($symb,$apath,$adom,$aname) = @_;
10045:     if ($symb ne '') {
10046:         my %essays = &Apache::lonnet::dump('nohist_essay_'.$apath,$adom,$aname);
10047:         if (keys(%essays) > 0) {
10048:             $old_essays{$symb} = \%essays;
10049:         }
10050:     }
10051:     return;
10052: }
10053: 
10054: sub reset_old_essays {
10055:     undef(%old_essays);
10056: }
10057: 
10058: sub gather_clicker_ids {
10059:     my %clicker_ids;
10060: 
10061:     my $classlist = &Apache::loncoursedata::get_classlist();
10062: 
10063:     # Set up a couple variables.
10064:     my $username_idx = &Apache::loncoursedata::CL_SNAME();
10065:     my $domain_idx   = &Apache::loncoursedata::CL_SDOM();
10066:     my $status_idx   = &Apache::loncoursedata::CL_STATUS();
10067: 
10068:     foreach my $student (keys(%$classlist)) {
10069:         if ($classlist->{$student}->[$status_idx] ne 'Active') { next; }
10070:         my $username = $classlist->{$student}->[$username_idx];
10071:         my $domain   = $classlist->{$student}->[$domain_idx];
10072:         my $clickers =
10073: 	    (&Apache::lonnet::userenvironment($domain,$username,'clickers'))[1];
10074:         foreach my $id (split(/\,/,$clickers)) {
10075:             $id=~s/^[\#0]+//;
10076:             $id=~s/[\-\:]//g;
10077:             if (exists($clicker_ids{$id})) {
10078: 		$clicker_ids{$id}.=','.$username.':'.$domain;
10079:             } else {
10080: 		$clicker_ids{$id}=$username.':'.$domain;
10081:             }
10082:         }
10083:     }
10084:     return %clicker_ids;
10085: }
10086: 
10087: sub gather_adv_clicker_ids {
10088:     my %clicker_ids;
10089:     my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
10090:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
10091:     my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
10092:     foreach my $element (sort(keys(%coursepersonnel))) {
10093:         foreach my $person (split(/\,/,$coursepersonnel{$element})) {
10094:             my ($puname,$pudom)=split(/\:/,$person);
10095:             my $clickers =
10096: 		(&Apache::lonnet::userenvironment($pudom,$puname,'clickers'))[1];
10097:             foreach my $id (split(/\,/,$clickers)) {
10098: 		$id=~s/^[\#0]+//;
10099:                 $id=~s/[\-\:]//g;
10100: 		if (exists($clicker_ids{$id})) {
10101: 		    $clicker_ids{$id}.=','.$puname.':'.$pudom;
10102: 		} else {
10103: 		    $clicker_ids{$id}=$puname.':'.$pudom;
10104: 		}
10105:             }
10106:         }
10107:     }
10108:     return %clicker_ids;
10109: }
10110: 
10111: sub clicker_grading_parameters {
10112:     return ('gradingmechanism' => 'scalar',
10113:             'upfiletype' => 'scalar',
10114:             'specificid' => 'scalar',
10115:             'pcorrect' => 'scalar',
10116:             'pincorrect' => 'scalar');
10117: }
10118: 
10119: sub process_clicker {
10120:     my ($r,$symb)=@_;
10121:     if (!$symb) {return '';}
10122:     my $result=&checkforfile_js();
10123:     $result.=&Apache::loncommon::start_data_table().
10124:              &Apache::loncommon::start_data_table_header_row().
10125:              '<th>'.&mt('Specify a file containing clicker information and set grading options.').'</th>'.
10126:              &Apache::loncommon::end_data_table_header_row().
10127:              &Apache::loncommon::start_data_table_row()."<td>\n";
10128: # Attempt to restore parameters from last session, set defaults if not present
10129:     my %Saveable_Parameters=&clicker_grading_parameters();
10130:     &Apache::loncommon::restore_course_settings('grades_clicker',
10131:                                                  \%Saveable_Parameters);
10132:     if (!$env{'form.pcorrect'}) { $env{'form.pcorrect'}=100; }
10133:     if (!$env{'form.pincorrect'}) { $env{'form.pincorrect'}=100; }
10134:     if (!$env{'form.gradingmechanism'}) { $env{'form.gradingmechanism'}='attendance'; }
10135:     if (!$env{'form.upfiletype'}) { $env{'form.upfiletype'}='iclicker'; }
10136: 
10137:     my %checked;
10138:     foreach my $gradingmechanism ('attendance','personnel','specific','given') {
10139:        if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
10140:           $checked{$gradingmechanism}=' checked="checked"';
10141:        }
10142:     }
10143: 
10144:     my $upload=&mt("Evaluate File");
10145:     my $type=&mt("Type");
10146:     my $attendance=&mt("Award points just for participation");
10147:     my $personnel=&mt("Correctness determined from response by course personnel");
10148:     my $specific=&mt("Correctness determined from response with clicker ID(s)"); 
10149:     my $given=&mt("Correctness determined from given list of answers").' '.
10150:               '<font size="-2"><tt>('.&mt("Provide comma-separated list. Use '*' for any answer correct, '-' for skip").')</tt></font>';
10151:     my $pcorrect=&mt("Percentage points for correct solution");
10152:     my $pincorrect=&mt("Percentage points for incorrect solution");
10153:     my $selectform=&Apache::loncommon::select_form($env{'form.upfiletype'},'upfiletype',
10154: 						   {'iclicker' => 'i>clicker',
10155:                                                     'interwrite' => 'interwrite PRS',
10156:                                                     'turning' => 'Turning Technologies'});
10157:     $symb = &Apache::lonenc::check_encrypt($symb);
10158:     $result.= &Apache::lonhtmlcommon::scripttag(<<ENDUPFORM);
10159: function sanitycheck() {
10160: // Accept only integer percentages
10161:    document.forms.gradesupload.pcorrect.value=Math.round(document.forms.gradesupload.pcorrect.value);
10162:    document.forms.gradesupload.pincorrect.value=Math.round(document.forms.gradesupload.pincorrect.value);
10163: // Find out grading choice
10164:    for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
10165:       if (document.forms.gradesupload.gradingmechanism[i].checked) {
10166:          gradingchoice=document.forms.gradesupload.gradingmechanism[i].value;
10167:       }
10168:    }
10169: // By default, new choice equals user selection
10170:    newgradingchoice=gradingchoice;
10171: // Not good to give more points for false answers than correct ones
10172:    if (Math.round(document.forms.gradesupload.pcorrect.value)<Math.round(document.forms.gradesupload.pincorrect.value)) {
10173:       document.forms.gradesupload.pcorrect.value=document.forms.gradesupload.pincorrect.value;
10174:    }
10175: // If new choice is attendance only, and old choice was correctness-based, restore defaults
10176:    if ((gradingchoice=='attendance') && (document.forms.gradesupload.waschecked.value!='attendance')) {
10177:       document.forms.gradesupload.pcorrect.value=100;
10178:       document.forms.gradesupload.pincorrect.value=100;
10179:    }
10180: // If the values are different, cannot be attendance only
10181:    if ((Math.round(document.forms.gradesupload.pcorrect.value)!=Math.round(document.forms.gradesupload.pincorrect.value)) &&
10182:        (gradingchoice=='attendance')) {
10183:        newgradingchoice='personnel';
10184:    }
10185: // Change grading choice to new one
10186:    for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
10187:       if (document.forms.gradesupload.gradingmechanism[i].value==newgradingchoice) {
10188:          document.forms.gradesupload.gradingmechanism[i].checked=true;
10189:       } else {
10190:          document.forms.gradesupload.gradingmechanism[i].checked=false;
10191:       }
10192:    }
10193: // Remember the old state
10194:    document.forms.gradesupload.waschecked.value=newgradingchoice;
10195: }
10196: ENDUPFORM
10197:     $result.= <<ENDUPFORM;
10198: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
10199: <input type="hidden" name="symb" value="$symb" />
10200: <input type="hidden" name="command" value="processclickerfile" />
10201: <input type="file" name="upfile" size="50" />
10202: <br /><label>$type: $selectform</label>
10203: ENDUPFORM
10204:     $result.='</td>'.&Apache::loncommon::end_data_table_row().
10205:                      &Apache::loncommon::start_data_table_row().'<td>'.(<<ENDGRADINGFORM);
10206:       <label><input type="radio" name="gradingmechanism" value="attendance"$checked{'attendance'} onclick="sanitycheck()" />$attendance </label>
10207: <br /><label><input type="radio" name="gradingmechanism" value="personnel"$checked{'personnel'} onclick="sanitycheck()" />$personnel</label>
10208: <br /><label><input type="radio" name="gradingmechanism" value="specific"$checked{'specific'} onclick="sanitycheck()" />$specific </label>
10209: <input type="text" name="specificid" value="$env{'form.specificid'}" size="20" />
10210: <br /><label><input type="radio" name="gradingmechanism" value="given"$checked{'given'} onclick="sanitycheck()" />$given </label>
10211: <br />&nbsp;&nbsp;&nbsp;
10212: <input type="text" name="givenanswer" size="50" />
10213: <input type="hidden" name="waschecked" value="$env{'form.gradingmechanism'}" />
10214: ENDGRADINGFORM
10215:          $result.='</td>'.&Apache::loncommon::end_data_table_row().
10216:                      &Apache::loncommon::start_data_table_row().'<td>'.(<<ENDPERCFORM);
10217:       <label>$pcorrect: <input type="text" name="pcorrect" size="4" value="$env{'form.pcorrect'}" onchange="sanitycheck()" /></label>
10218: <br /><label>$pincorrect: <input type="text" name="pincorrect" size="4" value="$env{'form.pincorrect'}" onchange="sanitycheck()" /></label>
10219: <br /><input type="button" onclick="javascript:checkUpload(this.form);" value="$upload" />
10220: </form>'
10221: ENDPERCFORM
10222:     $result.='</td>'.
10223:              &Apache::loncommon::end_data_table_row().
10224:              &Apache::loncommon::end_data_table();
10225:     return $result;
10226: }
10227: 
10228: sub process_clicker_file {
10229:     my ($r,$symb)=@_;
10230:     if (!$symb) {return '';}
10231: 
10232:     my %Saveable_Parameters=&clicker_grading_parameters();
10233:     &Apache::loncommon::store_course_settings('grades_clicker',
10234:                                               \%Saveable_Parameters);
10235:     my $result='';
10236:     if (($env{'form.gradingmechanism'} eq 'specific') && ($env{'form.specificid'}!~/\w/)) {
10237: 	$result.='<span class="LC_error">'.&mt('You need to specify a clicker ID for the correct answer').'</span>';
10238: 	return $result;
10239:     }
10240:     if (($env{'form.gradingmechanism'} eq 'given') && ($env{'form.givenanswer'}!~/\S/)) {
10241:         $result.='<span class="LC_error">'.&mt('You need to specify the correct answer').'</span>';
10242:         return $result;
10243:     }
10244:     my $foundgiven=0;
10245:     if ($env{'form.gradingmechanism'} eq 'given') {
10246:         $env{'form.givenanswer'}=~s/^\s*//gs;
10247:         $env{'form.givenanswer'}=~s/\s*$//gs;
10248:         $env{'form.givenanswer'}=~s/[^a-zA-Z0-9\.\*\-\+]+/\,/g;
10249:         $env{'form.givenanswer'}=uc($env{'form.givenanswer'});
10250:         my @answers=split(/\,/,$env{'form.givenanswer'});
10251:         $foundgiven=$#answers+1;
10252:     }
10253:     my %clicker_ids=&gather_clicker_ids();
10254:     my %correct_ids;
10255:     if ($env{'form.gradingmechanism'} eq 'personnel') {
10256: 	%correct_ids=&gather_adv_clicker_ids();
10257:     }
10258:     if ($env{'form.gradingmechanism'} eq 'specific') {
10259: 	foreach my $correct_id (split(/[\s\,]/,$env{'form.specificid'})) {;
10260: 	   $correct_id=~tr/a-z/A-Z/;
10261: 	   $correct_id=~s/\s//gs;
10262: 	   $correct_id=~s/^[\#0]+//;
10263:            $correct_id=~s/[\-\:]//g;
10264:            if ($correct_id) {
10265: 	      $correct_ids{$correct_id}='specified';
10266:            }
10267:         }
10268:     }
10269:     if ($env{'form.gradingmechanism'} eq 'attendance') {
10270: 	$result.=&mt('Score based on attendance only');
10271:     } elsif ($env{'form.gradingmechanism'} eq 'given') {
10272:         $result.=&mt('Score based on [_1] ([_2] answers)','<tt>'.$env{'form.givenanswer'}.'</tt>',$foundgiven);
10273:     } else {
10274: 	my $number=0;
10275: 	$result.='<p><b>'.&mt('Correctness determined by the following IDs').'</b>';
10276: 	foreach my $id (sort(keys(%correct_ids))) {
10277: 	    $result.='<br /><tt>'.$id.'</tt> - ';
10278: 	    if ($correct_ids{$id} eq 'specified') {
10279: 		$result.=&mt('specified');
10280: 	    } else {
10281: 		my ($uname,$udom)=split(/\:/,$correct_ids{$id});
10282: 		$result.=&Apache::loncommon::plainname($uname,$udom);
10283: 	    }
10284: 	    $number++;
10285: 	}
10286:         $result.="</p>\n";
10287:         if ($number==0) {
10288:             $result .=
10289:                  &Apache::lonhtmlcommon::confirm_success(
10290:                      &mt('No IDs found to determine correct answer'),1);
10291:             return $result;
10292:         }
10293:     }
10294:     if (length($env{'form.upfile'}) < 2) {
10295:         $result .=
10296:             &Apache::lonhtmlcommon::confirm_success(
10297:                 &mt('The file: [_1] you attempted to upload contained no information. Please check that you entered the correct filename.',
10298:                         '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'),1);
10299:         return $result;
10300:     }
10301:     my $mimetype;
10302:     if ($env{'form.upfiletype'} eq 'iclicker') {
10303:         my $mm = new File::MMagic;
10304:         $mimetype = $mm->checktype_contents($env{'form.upfile'});
10305:         unless (($mimetype eq 'text/plain') || ($mimetype eq 'text/html')) {
10306:             $result.= '<p>'.
10307:                 &Apache::lonhtmlcommon::confirm_success(
10308:                     &mt('File format is neither csv (iclicker 6) nor xml (iclicker 7)'),1).'</p>';
10309:             return $result;
10310:         }
10311:     } elsif (($env{'form.upfiletype'} ne 'interwrite') && ($env{'form.upfiletype'} ne 'turning')) {
10312:         $result .= '<p>'.
10313:             &Apache::lonhtmlcommon::confirm_success(
10314:                 &mt('Invalid clicker type: choose one of: i>clicker, Interwrite PRS, or Turning Technologies.'),1).'</p>';
10315:         return $result;
10316:     }
10317: 
10318: # Were able to get all the info needed, now analyze the file
10319: 
10320:     $result.=&Apache::loncommon::studentbrowser_javascript();
10321:     $symb = &Apache::lonenc::check_encrypt($symb);
10322:     $result.=&Apache::loncommon::start_data_table().
10323:              &Apache::loncommon::start_data_table_header_row().
10324:              '<th>'.&mt('Evaluate clicker file').'</th>'.
10325:              &Apache::loncommon::end_data_table_header_row().
10326:              &Apache::loncommon::start_data_table_row().(<<ENDHEADER);
10327: <td>
10328: <form method="post" action="/adm/grades" name="clickeranalysis">
10329: <input type="hidden" name="symb" value="$symb" />
10330: <input type="hidden" name="command" value="assignclickergrades" />
10331: <input type="hidden" name="gradingmechanism" value="$env{'form.gradingmechanism'}" />
10332: <input type="hidden" name="pcorrect" value="$env{'form.pcorrect'}" />
10333: <input type="hidden" name="pincorrect" value="$env{'form.pincorrect'}" />
10334: ENDHEADER
10335:     if ($env{'form.gradingmechanism'} eq 'given') {
10336:        $result.='<input type="hidden" name="correct:given" value="'.$env{'form.givenanswer'}.'" />';
10337:     } 
10338:     my %responses;
10339:     my @questiontitles;
10340:     my $errormsg='';
10341:     my $number=0;
10342:     if ($env{'form.upfiletype'} eq 'iclicker') {
10343:         if ($mimetype eq 'text/plain') {
10344:             ($errormsg,$number)=&iclicker_eval(\@questiontitles,\%responses);
10345:         } elsif ($mimetype eq 'text/html') {
10346:             ($errormsg,$number)=&iclickerxml_eval(\@questiontitles,\%responses);
10347:         }
10348:     } elsif ($env{'form.upfiletype'} eq 'interwrite') {
10349:         ($errormsg,$number)=&interwrite_eval(\@questiontitles,\%responses);
10350:     } elsif ($env{'form.upfiletype'} eq 'turning') {
10351:         ($errormsg,$number)=&turning_eval(\@questiontitles,\%responses);
10352:     }
10353:     $result.='<br />'.&mt('Found [_1] question(s)',$number).'<br />'.
10354:              '<input type="hidden" name="number" value="'.$number.'" />'.
10355:              &mt('Awarding [_1] percent for correct and [_2] percent for incorrect responses',
10356:                  $env{'form.pcorrect'},$env{'form.pincorrect'}).
10357:              '<br />';
10358:     if (($env{'form.gradingmechanism'} eq 'given') && ($number!=$foundgiven)) {
10359:        $result.='<span class="LC_error">'.&mt('Number of given answers does not agree with number of questions in file.').'</span>';
10360:        return $result;
10361:     } 
10362: # Remember Question Titles
10363: # FIXME: Possibly need delimiter other than ":"
10364:     for (my $i=0;$i<$number;$i++) {
10365:         $result.='<input type="hidden" name="question:'.$i.'" value="'.
10366:                  &HTML::Entities::encode($questiontitles[$i],'"&<>').'" />';
10367:     }
10368:     my $correct_count=0;
10369:     my $student_count=0;
10370:     my $unknown_count=0;
10371: # Match answers with usernames
10372: # FIXME: Possibly need delimiter other than ":"
10373:     foreach my $id (keys(%responses)) {
10374:        if ($correct_ids{$id}) {
10375:           $result.="\n".'<input type="hidden" name="correct:'.$correct_count.':'.$correct_ids{$id}.'" value="'.$responses{$id}.'" />';
10376:           $correct_count++;
10377:        } elsif ($clicker_ids{$id}) {
10378:           if ($clicker_ids{$id}=~/\,/) {
10379: # More than one user with the same clicker!
10380:              $result.="</td>".&Apache::loncommon::end_data_table_row().
10381:                            &Apache::loncommon::start_data_table_row()."<td>".
10382:                        &mt('Clicker registered more than once').": <tt>".$id."</tt><br />";
10383:              $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
10384:                            "<select name='multi".$id."'>";
10385:              foreach my $reguser (sort(split(/\,/,$clicker_ids{$id}))) {
10386:                  $result.="<option value='".$reguser."'>".&Apache::loncommon::plainname(split(/\:/,$reguser)).' ('.$reguser.')</option>';
10387:              }
10388:              $result.='</select>';
10389:              $unknown_count++;
10390:           } else {
10391: # Good: found one and only one user with the right clicker
10392:              $result.="\n".'<input type="hidden" name="student:'.$clicker_ids{$id}.'" value="'.$responses{$id}.'" />';
10393:              $student_count++;
10394:           }
10395:        } else {
10396:           $result.="</td>".&Apache::loncommon::end_data_table_row().
10397:                            &Apache::loncommon::start_data_table_row()."<td>".
10398:                     &mt('Unregistered Clicker')." <tt>".$id."</tt><br />";
10399:           $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
10400:                    "\n".&mt("Username").": <input type='text' name='uname".$id."' />&nbsp;".
10401:                    "\n".&mt("Domain").": ".
10402:                    &Apache::loncommon::select_dom_form($env{'course.'.$env{'request.course.id'}.'.domain'},'udom'.$id).'&nbsp;'.
10403:                    &Apache::loncommon::selectstudent_link('clickeranalysis','uname'.$id,'udom'.$id,'',$id);
10404:           $unknown_count++;
10405:        }
10406:     }
10407:     $result.='<hr />'.
10408:              &mt('Found [_1] registered and [_2] unregistered clickers.',$student_count,$unknown_count);
10409:     if (($env{'form.gradingmechanism'} ne 'attendance') && ($env{'form.gradingmechanism'} ne 'given')) {
10410:        if ($correct_count==0) {
10411:           $errormsg.="Found no correct answers for grading!";
10412:        } elsif ($correct_count>1) {
10413:           $result.='<br /><span class="LC_warning">'.&mt("Found [_1] entries for grading!",$correct_count).'</span>';
10414:        }
10415:     }
10416:     if ($number<1) {
10417:        $errormsg.="Found no questions.";
10418:     }
10419:     if ($errormsg) {
10420:        $result.='<br /><span class="LC_error">'.&mt($errormsg).'</span>';
10421:     } else {
10422:        $result.='<br /><input type="submit" name="finalize" value="'.&mt('Finalize Grading').'" />';
10423:     }
10424:     $result.='</form></td>'.
10425:              &Apache::loncommon::end_data_table_row().
10426:              &Apache::loncommon::end_data_table();
10427:     return $result;
10428: }
10429: 
10430: sub iclicker_eval {
10431:     my ($questiontitles,$responses)=@_;
10432:     my $number=0;
10433:     my $errormsg='';
10434:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
10435:         my %components=&Apache::loncommon::record_sep($line);
10436:         my @entries=map {$components{$_}} (sort(keys(%components)));
10437: 	if ($entries[0] eq 'Question') {
10438: 	    for (my $i=3;$i<$#entries;$i+=6) {
10439: 		$$questiontitles[$number]=$entries[$i];
10440: 		$number++;
10441: 	    }
10442: 	}
10443: 	if ($entries[0]=~/^\#/) {
10444: 	    my $id=$entries[0];
10445: 	    my @idresponses;
10446: 	    $id=~s/^[\#0]+//;
10447: 	    for (my $i=0;$i<$number;$i++) {
10448: 		my $idx=3+$i*6;
10449:                 $entries[$idx]=~s/[^a-zA-Z0-9\.\*\-\+]+//g;
10450: 		push(@idresponses,$entries[$idx]);
10451: 	    }
10452: 	    $$responses{$id}=join(',',@idresponses);
10453: 	}
10454:     }
10455:     return ($errormsg,$number);
10456: }
10457: 
10458: sub iclickerxml_eval {
10459:     my ($questiontitles,$responses)=@_;
10460:     my $number=0;
10461:     my $errormsg='';
10462:     my @state;
10463:     my %respbyid;
10464:     my $p = HTML::Parser->new
10465:     (
10466:         xml_mode => 1,
10467:         start_h =>
10468:             [sub {
10469:                  my ($tagname,$attr) = @_;
10470:                  push(@state,$tagname);
10471:                  if ("@state" eq "ssn p") {
10472:                      my $title = $attr->{qn};
10473:                      $title =~ s/(^\s+|\s+$)//g;
10474:                      $questiontitles->[$number]=$title;
10475:                  } elsif ("@state" eq "ssn p v") {
10476:                      my $id = $attr->{id};
10477:                      my $entry = $attr->{ans};
10478:                      $id=~s/^[\#0]+//;
10479:                      $entry =~s/[^a-zA-Z0-9\.\*\-\+]+//g;
10480:                      $respbyid{$id}[$number] = $entry;
10481:                  }
10482:             }, "tagname, attr"],
10483:          end_h =>
10484:                [sub {
10485:                    my ($tagname) = @_;
10486:                    if ("@state" eq "ssn p") {
10487:                        $number++;
10488:                    }
10489:                    pop(@state);
10490:                 }, "tagname"],
10491:     );
10492: 
10493:     $p->parse($env{'form.upfile'});
10494:     $p->eof;
10495:     foreach my $id (keys(%respbyid)) {
10496:         $responses->{$id}=join(',',@{$respbyid{$id}});
10497:     }
10498:     return ($errormsg,$number);
10499: }
10500: 
10501: sub interwrite_eval {
10502:     my ($questiontitles,$responses)=@_;
10503:     my $number=0;
10504:     my $errormsg='';
10505:     my $skipline=1;
10506:     my $questionnumber=0;
10507:     my %idresponses=();
10508:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
10509:         my %components=&Apache::loncommon::record_sep($line);
10510:         my @entries=map {$components{$_}} (sort(keys(%components)));
10511:         if ($entries[1] eq 'Time') { $skipline=0; next; }
10512:         if ($entries[1] eq 'Response') { $skipline=1; }
10513:         next if $skipline;
10514:         if ($entries[0]!=$questionnumber) {
10515:            $questionnumber=$entries[0];
10516:            $$questiontitles[$number]=&mt('Question [_1]',$questionnumber);
10517:            $number++;
10518:         }
10519:         my $id=$entries[4];
10520:         $id=~s/^[\#0]+//;
10521:         $id=~s/^v\d*\://i;
10522:         $id=~s/[\-\:]//g;
10523:         $idresponses{$id}[$number]=$entries[6];
10524:     }
10525:     foreach my $id (keys(%idresponses)) {
10526:        $$responses{$id}=join(',',@{$idresponses{$id}});
10527:        $$responses{$id}=~s/^\s*\,//;
10528:     }
10529:     return ($errormsg,$number);
10530: }
10531: 
10532: sub turning_eval {
10533:     my ($questiontitles,$responses)=@_;
10534:     my $number=0;
10535:     my $errormsg='';
10536:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
10537:         my %components=&Apache::loncommon::record_sep($line);
10538:         my @entries=map {$components{$_}} (sort(keys(%components)));
10539:         if ($#entries>$number) { $number=$#entries; }
10540:         my $id=$entries[0];
10541:         my @idresponses;
10542:         $id=~s/^[\#0]+//;
10543:         unless ($id) { next; }
10544:         for (my $idx=1;$idx<=$#entries;$idx++) {
10545:             $entries[$idx]=~s/\,/\;/g;
10546:             $entries[$idx]=~s/[^a-zA-Z0-9\.\*\-\+\;]+//g;
10547:             push(@idresponses,$entries[$idx]);
10548:         }
10549:         $$responses{$id}=join(',',@idresponses);
10550:     }
10551:     for (my $i=1; $i<=$number; $i++) {
10552:         $$questiontitles[$i]=&mt('Question [_1]',$i);
10553:     }
10554:     return ($errormsg,$number);
10555: }
10556: 
10557: 
10558: sub assign_clicker_grades {
10559:     my ($r,$symb)=@_;
10560:     if (!$symb) {return '';}
10561: # See which part we are saving to
10562:     my $res_error;
10563:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
10564:     if ($res_error) {
10565:         return &navmap_errormsg();
10566:     }
10567: # FIXME: This should probably look for the first handgradeable part
10568:     my $part=$$partlist[0];
10569: # Start screen output
10570:     my $result=&Apache::loncommon::start_data_table().
10571:              &Apache::loncommon::start_data_table_header_row().
10572:              '<th>'.&mt('Assigning grades based on clicker file').'</th>'.
10573:              &Apache::loncommon::end_data_table_header_row().
10574:              &Apache::loncommon::start_data_table_row().'<td>';
10575: # Get correct result
10576: # FIXME: Possibly need delimiter other than ":"
10577:     my @correct=();
10578:     my $gradingmechanism=$env{'form.gradingmechanism'};
10579:     my $number=$env{'form.number'};
10580:     if ($gradingmechanism ne 'attendance') {
10581:        foreach my $key (keys(%env)) {
10582:           if ($key=~/^form\.correct\:/) {
10583:              my @input=split(/\,/,$env{$key});
10584:              for (my $i=0;$i<=$#input;$i++) {
10585:                  if (($correct[$i]) && ($input[$i]) &&
10586:                      ($correct[$i] ne $input[$i])) {
10587:                     $result.='<br /><span class="LC_warning">'.
10588:                              &mt('More than one correct result given for question "[_1]": [_2] versus [_3].',
10589:                                  $env{'form.question:'.$i},$correct[$i],$input[$i]).'</span>';
10590:                  } elsif (($input[$i]) || ($input[$i] eq '0')) {
10591:                     $correct[$i]=$input[$i];
10592:                  }
10593:              }
10594:           }
10595:        }
10596:        for (my $i=0;$i<$number;$i++) {
10597:           if ((!$correct[$i]) && ($correct[$i] ne '0')) {
10598:              $result.='<br /><span class="LC_error">'.
10599:                       &mt('No correct result given for question "[_1]"!',
10600:                           $env{'form.question:'.$i}).'</span>';
10601:           }
10602:        }
10603:        $result.='<br />'.&mt("Correct answer: [_1]",join(', ',map { ((($_) || ($_ eq '0'))?$_:'-') } @correct));
10604:     }
10605: # Start grading
10606:     my $pcorrect=$env{'form.pcorrect'};
10607:     my $pincorrect=$env{'form.pincorrect'};
10608:     my $storecount=0;
10609:     my %users=();
10610:     foreach my $key (keys(%env)) {
10611:        my $user='';
10612:        if ($key=~/^form\.student\:(.*)$/) {
10613:           $user=$1;
10614:        }
10615:        if ($key=~/^form\.unknown\:(.*)$/) {
10616:           my $id=$1;
10617:           if (($env{'form.uname'.$id}) && ($env{'form.udom'.$id})) {
10618:              $user=$env{'form.uname'.$id}.':'.$env{'form.udom'.$id};
10619:           } elsif ($env{'form.multi'.$id}) {
10620:              $user=$env{'form.multi'.$id};
10621:           }
10622:        }
10623:        if ($user) {
10624:           if ($users{$user}) {
10625:              $result.='<br /><span class="LC_warning">'.
10626:                       &mt('More than one entry found for [_1]!','<tt>'.$user.'</tt>').
10627:                       '</span><br />';
10628:           }
10629:           $users{$user}=1; 
10630:           my @answer=split(/\,/,$env{$key});
10631:           my $sum=0;
10632:           my $realnumber=$number;
10633:           for (my $i=0;$i<$number;$i++) {
10634:              if  ($correct[$i] eq '-') {
10635:                 $realnumber--;
10636:              } elsif (($answer[$i]) || ($answer[$i]=~/^[0\.]+$/))  {
10637:                 if ($gradingmechanism eq 'attendance') {
10638:                    $sum+=$pcorrect;
10639:                 } elsif ($correct[$i] eq '*') {
10640:                    $sum+=$pcorrect;
10641:                 } else {
10642: # We actually grade if correct or not
10643:                    my $increment=$pincorrect;
10644: # Special case: numerical answer "0"
10645:                    if ($correct[$i] eq '0') {
10646:                       if ($answer[$i]=~/^[0\.]+$/) {
10647:                          $increment=$pcorrect;
10648:                       }
10649: # General numerical answer, both evaluate to something non-zero
10650:                    } elsif ((1.0*$correct[$i]!=0) && (1.0*$answer[$i]!=0)) {
10651:                       if (1.0*$correct[$i]==1.0*$answer[$i]) {
10652:                          $increment=$pcorrect;
10653:                       }
10654: # Must be just alphanumeric
10655:                    } elsif ($answer[$i] eq $correct[$i]) {
10656:                       $increment=$pcorrect;
10657:                    }
10658:                    $sum+=$increment;
10659:                 }
10660:              }
10661:           }
10662:           my $ave=$sum/(100*$realnumber);
10663: # Store
10664:           my ($username,$domain)=split(/\:/,$user);
10665:           my %grades=();
10666:           $grades{"resource.$part.solved"}='correct_by_override';
10667:           $grades{"resource.$part.awarded"}=$ave;
10668:           $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
10669:           my $returncode=&Apache::lonnet::cstore(\%grades,$symb,
10670:                                                  $env{'request.course.id'},
10671:                                                  $domain,$username);
10672:           if ($returncode ne 'ok') {
10673:              $result.="<br /><span class=\"LC_error\">Failed to save student $username:$domain. Message when trying to save was ($returncode)</span>";
10674:           } else {
10675:              $storecount++;
10676:           }
10677:        }
10678:     }
10679: # We are done
10680:     $result.='<br />'.&mt('Successfully stored grades for [quant,_1,student].',$storecount).
10681:              '</td>'.
10682:              &Apache::loncommon::end_data_table_row().
10683:              &Apache::loncommon::end_data_table();
10684:     return $result;
10685: }
10686: 
10687: sub navmap_errormsg {
10688:     return '<div class="LC_error">'.
10689:            &mt('An error occurred retrieving information about resources in the course.').'<br />'.
10690:            &mt('It is recommended that you [_1]re-initialize the course[_2] and then return to this grading page.','<a href="/adm/roles?selectrole=1&newrole='.$env{'request.role'}.'">','</a>').
10691:            '</div>';
10692: }
10693: 
10694: sub startpage {
10695:     my ($r,$symb,$crumbs,$onlyfolderflag,$nodisplayflag,$stuvcurrent,$stuvdisp,$nomenu,$js,$onload) = @_;
10696:     my %args;
10697:     if ($onload) {
10698:          my %loaditems = (
10699:                         'onload' => $onload,
10700:                       );
10701:          $args{'add_entries'} = \%loaditems;
10702:     }
10703:     if ($nomenu) {
10704:         $args{'only_body'} = 1; 
10705:         $r->print(&Apache::loncommon::start_page("Student's Version",$js,\%args));
10706:     } else {
10707:         unshift(@$crumbs,{href=>&href_symb_cmd($symb,'gradingmenu'),text=>"Grading"});
10708:         $args{'bread_crumbs'} = $crumbs;
10709:         $r->print(&Apache::loncommon::start_page('Grading',$js,\%args));
10710:         &Apache::lonquickgrades::startGradeScreen($r,($env{'form.symb'}?'probgrading':'grading'));
10711:     }
10712:     unless ($nodisplayflag) {
10713:         $r->print(&Apache::lonhtmlcommon::resource_info_box($symb,$onlyfolderflag,$stuvcurrent,$stuvdisp));
10714:     }
10715: }
10716: 
10717: sub select_problem {
10718:     my ($r)=@_;
10719:     $r->print('<h3>'.&mt('Select the problem or one of the problems you want to grade').'</h3><form action="/adm/grades">');
10720:     $r->print(&Apache::lonstathelpers::problem_selector('.',undef,1,undef,undef,undef,undef,1));
10721:     $r->print('<input type="hidden" name="command" value="gradingmenu" />');
10722:     $r->print('<input type="submit" value="'.&mt('Next').' &rarr;" /></form>');
10723: }
10724: 
10725: sub handler {
10726:     my $request=$_[0];
10727:     &reset_caches();
10728:     if ($request->header_only) {
10729:         &Apache::loncommon::content_type($request,'text/html');
10730:         $request->send_http_header;
10731:         return OK;
10732:     }
10733:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
10734: 
10735: # see what command we need to execute
10736: 
10737:     my @commands=&Apache::loncommon::get_env_multiple('form.command');
10738:     my $command=$commands[0];
10739: 
10740:     &init_perm();
10741:     if (!$env{'request.course.id'}) {
10742:         unless ((&Apache::lonnet::allowed('usc',$env{'request.role.domain'})) &&
10743:                 ($command =~ /^scantronupload/)) {
10744:             # Not in a course.
10745:             $env{'user.error.msg'}="/adm/grades::vgr:0:0:Cannot display grades page outside course context";
10746:             return HTTP_NOT_ACCEPTABLE;
10747:         }
10748:     } elsif (!%perm) {
10749:         $request->internal_redirect('/adm/quickgrades');
10750:         return OK;
10751:     }
10752:     &Apache::loncommon::content_type($request,'text/html');
10753:     $request->send_http_header;
10754: 
10755:     if ($#commands > 0) {
10756: 	&Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
10757:     }
10758: 
10759: # see what the symb is
10760: 
10761:     my $symb=$env{'form.symb'};
10762:     unless ($symb) {
10763:        (my $url=$env{'form.url'}) =~ s-^https*://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
10764:        $symb=&Apache::lonnet::symbread($url);
10765:     }
10766:     &Apache::lonenc::check_decrypt(\$symb);
10767: 
10768:     $ssi_error = 0;
10769:     if (($symb eq '' || $command eq '') && ($env{'request.course.id'})) {
10770: #
10771: # Not called from a resource, but inside a course
10772: #    
10773:         &startpage($request,undef,[],1,1);
10774:         &select_problem($request);
10775:     } else {
10776: 	if ($command eq 'submission' && $perm{'vgr'}) {
10777:             my ($stuvcurrent,$stuvdisp,$versionform,$js);
10778:             if (($env{'form.student'} ne '') && ($env{'form.userdom'} ne '')) {
10779:                 ($stuvcurrent,$stuvdisp,$versionform,$js) =
10780:                     &choose_task_version_form($symb,$env{'form.student'},
10781:                                               $env{'form.userdom'});
10782:             }
10783:             &startpage($request,$symb,[{href=>"", text=>"Student Submissions"}],undef,undef,$stuvcurrent,$stuvdisp,undef,$js);
10784:             if ($versionform) {
10785:                 $request->print($versionform);
10786:             }
10787:             $request->print('<br clear="all" />');
10788: 	    ($env{'form.student'} eq '' ? &listStudents($request,$symb) : &submission($request,0,0,$symb));
10789:         } elsif ($command eq 'versionsub' && $perm{'vgr'}) {
10790:             my ($stuvcurrent,$stuvdisp,$versionform,$js) =
10791:                 &choose_task_version_form($symb,$env{'form.student'},
10792:                                           $env{'form.userdom'},
10793:                                           $env{'form.inhibitmenu'});
10794:             &startpage($request,$symb,[{href=>"", text=>"Previous Student Version"}],undef,undef,$stuvcurrent,$stuvdisp,$env{'form.inhibitmenu'},$js);
10795:             if ($versionform) {
10796:                 $request->print($versionform);
10797:             }
10798:             $request->print('<br clear="all" />');
10799:             $request->print(&show_previous_task_version($request,$symb));
10800: 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
10801:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
10802:                                        {href=>'',text=>'Select student'}],1,1);
10803: 	    &pickStudentPage($request,$symb);
10804: 	} elsif ($command eq 'displayPage' && $perm{'vgr'}) {
10805:             &startpage($request,$symb,
10806:                                       [{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
10807:                                        {href=>'',text=>'Select student'},
10808:                                        {href=>'',text=>'Grade student'}],1,1);
10809: 	    &displayPage($request,$symb);
10810: 	} elsif ($command eq 'gradeByPage' && $perm{'mgr'}) {
10811:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
10812:                                        {href=>'',text=>'Select student'},
10813:                                        {href=>'',text=>'Grade student'},
10814:                                        {href=>'',text=>'Store grades'}],1,1);
10815: 	    &updateGradeByPage($request,$symb);
10816: 	} elsif ($command eq 'processGroup' && $perm{'vgr'}) {
10817:             &startpage($request,$symb,[{href=>'',text=>'...'},
10818:                                        {href=>'',text=>'Modify grades'}]);
10819: 	    &processGroup($request,$symb);
10820: 	} elsif ($command eq 'gradingmenu' && $perm{'vgr'}) {
10821:             &startpage($request,$symb);
10822: 	    $request->print(&grading_menu($request,$symb));
10823: 	} elsif ($command eq 'individual' && $perm{'vgr'}) {
10824:             &startpage($request,$symb,[{href=>'',text=>'Select individual students to grade'}]);
10825: 	    $request->print(&submit_options($request,$symb));
10826:         } elsif ($command eq 'ungraded' && $perm{'vgr'}) {
10827:             &startpage($request,$symb,[{href=>'',text=>'Grade ungraded submissions'}]);
10828:             $request->print(&listStudents($request,$symb,'graded'));
10829:         } elsif ($command eq 'table' && $perm{'vgr'}) {
10830:             &startpage($request,$symb,[{href=>"", text=>"Grading table"}]);
10831:             $request->print(&submit_options_table($request,$symb));
10832:         } elsif ($command eq 'all_for_one' && $perm{'vgr'}) {
10833:             &startpage($request,$symb,[{href=>'',text=>'Grade page/folder for one student'}],1,1);
10834:             $request->print(&submit_options_sequence($request,$symb));
10835: 	} elsif ($command eq 'viewgrades' && $perm{'vgr'}) {
10836:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"table"), text=>"Grading table"},{href=>'', text=>"Modify grades"}]);
10837: 	    $request->print(&viewgrades($request,$symb));
10838: 	} elsif ($command eq 'handgrade' && $perm{'mgr'}) {
10839:             &startpage($request,$symb,[{href=>'',text=>'...'},
10840:                                        {href=>'',text=>'Store grades'}]);
10841: 	    $request->print(&processHandGrade($request,$symb));
10842: 	} elsif ($command eq 'editgrades' && $perm{'mgr'}) {
10843:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"table"), text=>"Grading table"},
10844:                                        {href=>&href_symb_cmd($symb,'viewgrades').'&group=all&section=all&Status=Active',
10845:                                                                              text=>"Modify grades"},
10846:                                        {href=>'', text=>"Store grades"}]);
10847: 	    $request->print(&editgrades($request,$symb));
10848:         } elsif ($command eq 'initialverifyreceipt' && $perm{'vgr'}) {
10849:             &startpage($request,$symb,[{href=>'',text=>'Verify Receipt Number'}]);
10850:             $request->print(&initialverifyreceipt($request,$symb));
10851: 	} elsif ($command eq 'verify' && $perm{'vgr'}) {
10852:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"initialverifyreceipt"),text=>'Verify Receipt Number'},
10853:                                        {href=>'',text=>'Verification Result'}]);
10854: 	    $request->print(&verifyreceipt($request,$symb));
10855:         } elsif ($command eq 'processclicker' && $perm{'mgr'}) {
10856:             &startpage($request,$symb,[{href=>'', text=>'Process clicker'}]);
10857:             $request->print(&process_clicker($request,$symb));
10858:         } elsif ($command eq 'processclickerfile' && $perm{'mgr'}) {
10859:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'processclicker'), text=>'Process clicker'},
10860:                                        {href=>'', text=>'Process clicker file'}]);
10861:             $request->print(&process_clicker_file($request,$symb));
10862:         } elsif ($command eq 'assignclickergrades' && $perm{'mgr'}) {
10863:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'processclicker'), text=>'Process clicker'},
10864:                                        {href=>'', text=>'Process clicker file'},
10865:                                        {href=>'', text=>'Store grades'}]);
10866:             $request->print(&assign_clicker_grades($request,$symb));
10867: 	} elsif ($command eq 'csvform' && $perm{'mgr'}) {
10868:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10869: 	    $request->print(&upcsvScores_form($request,$symb));
10870: 	} elsif ($command eq 'csvupload' && $perm{'mgr'}) {
10871:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10872: 	    $request->print(&csvupload($request,$symb));
10873: 	} elsif ($command eq 'csvuploadmap' && $perm{'mgr'} ) {
10874:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10875: 	    $request->print(&csvuploadmap($request,$symb));
10876: 	} elsif ($command eq 'csvuploadoptions' && $perm{'mgr'}) {
10877: 	    if ($env{'form.associate'} ne 'Reverse Association') {
10878:                 &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10879: 		$request->print(&csvuploadoptions($request,$symb));
10880: 	    } else {
10881: 		if ( $env{'form.upfile_associate'} ne 'reverse' ) {
10882: 		    $env{'form.upfile_associate'} = 'reverse';
10883: 		} else {
10884: 		    $env{'form.upfile_associate'} = 'forward';
10885: 		}
10886:                 &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10887: 		$request->print(&csvuploadmap($request,$symb));
10888: 	    }
10889: 	} elsif ($command eq 'csvuploadassign' && $perm{'mgr'} ) {
10890:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10891: 	    $request->print(&csvuploadassign($request,$symb));
10892: 	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
10893:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1,
10894:                        undef,undef,undef,undef,'toggleScantab(document.rules);');
10895: 	    $request->print(&scantron_selectphase($request,undef,$symb));
10896:  	} elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
10897:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10898:  	    $request->print(&scantron_do_warning($request,$symb));
10899: 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
10900:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10901: 	    $request->print(&scantron_validate_file($request,$symb));
10902: 	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
10903:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10904: 	    $request->print(&scantron_process_students($request,$symb));
10905:  	} elsif ($command eq 'scantronupload' && 
10906:  		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
10907: 		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
10908:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1,
10909:                        undef,undef,undef,undef,'toggleScantab(document.rules);');
10910:  	    $request->print(&scantron_upload_scantron_data($request,$symb)); 
10911:  	} elsif ($command eq 'scantronupload_save' &&
10912:  		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
10913: 		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
10914:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10915:  	    $request->print(&scantron_upload_scantron_data_save($request,$symb));
10916:  	} elsif ($command eq 'scantron_download' &&
10917: 		 &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
10918:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10919:  	    $request->print(&scantron_download_scantron_data($request,$symb));
10920:         } elsif ($command eq 'checksubmissions' && $perm{'vgr'}) {
10921:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10922:             $request->print(&checkscantron_results($request,$symb));
10923:         } elsif ($command eq 'downloadfilesselect' && $perm{'vgr'}) {
10924:             &startpage($request,$symb,[{href=>'', text=>'Select which submissions to download'}]);
10925:             $request->print(&submit_options_download($request,$symb));
10926:          } elsif ($command eq 'downloadfileslink' && $perm{'vgr'}) {
10927:             &startpage($request,$symb,
10928:    [{href=>&href_symb_cmd($symb,'downloadfilesselect'), text=>'Select which submissions to download'},
10929:     {href=>'', text=>'Download submitted files'}]);
10930:             &submit_download_link($request,$symb);
10931: 	} elsif ($command) {
10932:             &startpage($request,$symb,[{href=>'', text=>'Access denied'}]);
10933: 	    $request->print('<p class="LC_error">'.&mt('Access Denied ([_1])',$command).'</p>');
10934: 	}
10935:     }
10936:     if ($ssi_error) {
10937: 	&ssi_print_error($request);
10938:     }
10939:     if ($env{'form.inhibitmenu'}) {
10940:         $request->print(&Apache::loncommon::end_page());
10941:     } else {
10942:         &Apache::lonquickgrades::endGradeScreen($request);
10943:     }
10944:     &reset_caches();
10945:     return OK;
10946: }
10947: 
10948: 1;
10949: 
10950: __END__;
10951: 
10952: 
10953: =head1 NAME
10954: 
10955: Apache::grades
10956: 
10957: =head1 SYNOPSIS
10958: 
10959: Handles the viewing of grades.
10960: 
10961: This is part of the LearningOnline Network with CAPA project
10962: described at http://www.lon-capa.org.
10963: 
10964: =head1 OVERVIEW
10965: 
10966: Do an ssi with retries:
10967: While I'd love to factor out this with the version in lonprintout,
10968: that would either require a data coupling between modules, which I refuse to perpetuate (there's quite enough of that already), or would require the invention of another infrastructure
10969: I'm not quite ready to invent (e.g. an ssi_with_retry object).
10970: 
10971: At least the logic that drives this has been pulled out into loncommon.
10972: 
10973: 
10974: 
10975: ssi_with_retries - Does the server side include of a resource.
10976:                      if the ssi call returns an error we'll retry it up to
10977:                      the number of times requested by the caller.
10978:                      If we still have a problem, no text is appended to the
10979:                      output and we set some global variables.
10980:                      to indicate to the caller an SSI error occurred.  
10981:                      All of this is supposed to deal with the issues described
10982:                      in LON-CAPA BZ 5631 see:
10983:                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
10984:                      by informing the user that this happened.
10985: 
10986: Parameters:
10987:   resource   - The resource to include.  This is passed directly, without
10988:                interpretation to lonnet::ssi.
10989:   form       - The form hash parameters that guide the interpretation of the resource
10990:                
10991:   retries    - Number of retries allowed before giving up completely.
10992: Returns:
10993:   On success, returns the rendered resource identified by the resource parameter.
10994: Side Effects:
10995:   The following global variables can be set:
10996:    ssi_error                - If an unrecoverable error occurred this becomes true.
10997:                               It is up to the caller to initialize this to false
10998:                               if desired.
10999:    ssi_error_resource  - If an unrecoverable error occurred, this is the value
11000:                               of the resource that could not be rendered by the ssi
11001:                               call.
11002:    ssi_error_message   - The error string fetched from the ssi response
11003:                               in the event of an error.
11004: 
11005: 
11006: =head1 HANDLER SUBROUTINE
11007: 
11008: ssi_with_retries()
11009: 
11010: =head1 SUBROUTINES
11011: 
11012: =over
11013: 
11014: =head1 Routines to display previous version of a Task for a specific student
11015: 
11016: Tasks are graded pass/fail. Students who have yet to pass a particular Task
11017: can receive another opportunity. Access to tasks is slot-based. If a slot
11018: requires a proctor to check-in the student, a new version of the Task will
11019: be created when the student is checked in to the new opportunity.
11020: 
11021: If a particular student has tried two or more versions of a particular task,
11022: the submission screen provides a user with vgr privileges (e.g., a Course
11023: Coordinator) the ability to display a previous version worked on by the
11024: student.  By default, the current version is displayed. If a previous version
11025: has been selected for display, submission data are only shown that pertain
11026: to that particular version, and the interface to submit grades is not shown.
11027: 
11028: =over 4
11029: 
11030: =item show_previous_task_version()
11031: 
11032: Displays a specified version of a student's Task, as the student sees it.
11033: 
11034: Inputs: 2
11035:         request - request object
11036:         symb    - unique symb for current instance of resource
11037: 
11038: Output: None.
11039: 
11040: Side Effects: calls &show_problem() to print version of Task, with
11041:               version contained in form item: $env{'form.previousversion'}
11042: 
11043: =item choose_task_version_form()
11044: 
11045: Displays a web form used to select which version of a student's view of a
11046: Task should be displayed.  Either launches a pop-up window, or replaces
11047: content in existing pop-up, or replaces page in main window.
11048: 
11049: Inputs: 4
11050:         symb    - unique symb for current instance of resource
11051:         uname   - username of student
11052:         udom    - domain of student
11053:         nomenu  - 1 if display is in a pop-up window, and hence no menu
11054:                   breadcrumbs etc., are displayed
11055: 
11056: Output: 4
11057:         current   - student's current version
11058:         displayed - student's version being displayed
11059:         result    - scalar containing HTML for web form used to switch to
11060:                     a different version (or a link to close window, if pop-up).
11061:         js        - javascript for processing selection in versions web form
11062: 
11063: Side Effects: None.
11064: 
11065: =item previous_display_javascript()
11066: 
11067: Inputs: 2
11068:         nomenu  - 1 if display is in a pop-up window, and hence no menu
11069:                   breadcrumbs etc., are displayed.
11070:         current - student's current version number.
11071: 
11072: Output: 1
11073:         js      - javascript for processing selection in versions web form.
11074: 
11075: Side Effects: None.
11076: 
11077: =back
11078: 
11079: =head1 Routines to process bubblesheet data.
11080: 
11081: =over 4
11082: 
11083: =item scantron_get_correction() : 
11084: 
11085:    Builds the interface screen to interact with the operator to fix a
11086:    specific error condition in a specific scanline
11087: 
11088:  Arguments:
11089:     $r           - Apache request object
11090:     $i           - number of the current scanline
11091:     $scan_record - hash ref as returned from &scantron_parse_scanline()
11092:     $scan_config - hash ref as returned from &Apache::lonnet::get_scantron_config()
11093:     $line        - full contents of the current scanline
11094:     $error       - error condition, valid values are
11095:                    'incorrectCODE', 'duplicateCODE',
11096:                    'doublebubble', 'missingbubble',
11097:                    'duplicateID', 'incorrectID'
11098:     $arg         - extra information needed
11099:        For errors:
11100:          - duplicateID   - paper number that this studentID was seen before on
11101:          - duplicateCODE - array ref of the paper numbers this CODE was
11102:                            seen on before
11103:          - incorrectCODE - current incorrect CODE 
11104:          - doublebubble  - array ref of the bubble lines that have double
11105:                            bubble errors
11106:          - missingbubble - array ref of the bubble lines that have missing
11107:                            bubble errors
11108: 
11109:    $randomorder - True if exam folder has randomorder set
11110:    $randompick  - True if exam folder has randompick set
11111:    $respnumlookup - Reference to HASH mapping question numbers in bubble lines
11112:                      for current line to question number used for same question
11113:                      in "Master Seqence" (as seen by Course Coordinator).
11114:    $startline   - Reference to hash where key is question number (0 is first)
11115:                   and value is number of first bubble line for current student
11116:                   or code-based randompick and/or randomorder.
11117: 
11118: 
11119: 
11120: =item  scantron_get_maxbubble() : 
11121: 
11122:    Arguments:
11123:        $nav_error  - Reference to scalar which is a flag to indicate a
11124:                       failure to retrieve a navmap object.
11125:        if $nav_error is set to 1 by scantron_get_maxbubble(), the 
11126:        calling routine should trap the error condition and display the warning
11127:        found in &navmap_errormsg().
11128: 
11129:        $scantron_config - Reference to bubblesheet format configuration hash.
11130: 
11131:    Returns the maximum number of bubble lines that are expected to
11132:    occur. Does this by walking the selected sequence rendering the
11133:    resource and then checking &Apache::lonxml::get_problem_counter()
11134:    for what the current value of the problem counter is.
11135: 
11136:    Caches the results to $env{'form.scantron_maxbubble'},
11137:    $env{'form.scantron.bubble_lines.n'}, 
11138:    $env{'form.scantron.first_bubble_line.n'} and
11139:    $env{"form.scantron.sub_bubblelines.n"}
11140:    which are the total number of bubble lines, the number of bubble
11141:    lines for response n and number of the first bubble line for response n,
11142:    and a comma separated list of numbers of bubble lines for sub-questions
11143:    (for optionresponse, matchresponse, and rankresponse items), for response n.  
11144: 
11145: 
11146: =item  scantron_validate_missingbubbles() : 
11147: 
11148:    Validates all scanlines in the selected file to not have any
11149:     answers that don't have bubbles that have not been verified
11150:     to be bubble free.
11151: 
11152: =item  scantron_process_students() : 
11153: 
11154:    Routine that does the actual grading of the bubblesheet information.
11155: 
11156:    The parsed scanline hash is added to %env 
11157: 
11158:    Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
11159:    foreach resource , with the form data of
11160: 
11161: 	'submitted'     =>'scantron' 
11162: 	'grade_target'  =>'grade',
11163: 	'grade_username'=> username of student
11164: 	'grade_domain'  => domain of student
11165: 	'grade_courseid'=> of course
11166: 	'grade_symb'    => symb of resource to grade
11167: 
11168:     This triggers a grading pass. The problem grading code takes care
11169:     of converting the bubbled letter information (now in %env) into a
11170:     valid submission.
11171: 
11172: =item  scantron_upload_scantron_data() :
11173: 
11174:     Creates the screen for adding a new bubblesheet data file to a course.
11175: 
11176: =item  scantron_upload_scantron_data_save() : 
11177: 
11178:    Adds a provided bubble information data file to the course if user
11179:    has the correct privileges to do so. 
11180: 
11181: =item  valid_file() :
11182: 
11183:    Validates that the requested bubble data file exists in the course.
11184: 
11185: =item  scantron_download_scantron_data() : 
11186: 
11187:    Shows a list of the three internal files (original, corrected,
11188:    skipped) for a specific bubblesheet data file that exists in the
11189:    course.
11190: 
11191: =item  scantron_validate_ID() : 
11192: 
11193:    Validates all scanlines in the selected file to not have any
11194:    invalid or underspecified student/employee IDs
11195: 
11196: =item navmap_errormsg() :
11197: 
11198:    Returns HTML mark-up inside a <div></div> with a link to re-initialize the course.
11199:    Should be called whenever the request to instantiate a navmap object fails.
11200: 
11201: =back
11202: 
11203: =back
11204: 
11205: =cut

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