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- conversions to use the start html wrapper
# The LearningOnline Network with CAPA # The LON-CAPA Homework handler # # $Id: lonhomework.pm,v 1.197 2005/03/01 03:24:05 albertel Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ package Apache::lonhomework; use strict; use Apache::style(); use Apache::lonxml(); use Apache::lonnet(); use Apache::lonplot(); use Apache::inputtags(); use Apache::structuretags(); use Apache::randomlabel(); use Apache::response(); use Apache::hint(); use Apache::outputtags(); use Apache::caparesponse(); use Apache::radiobuttonresponse(); use Apache::optionresponse(); use Apache::imageresponse(); use Apache::essayresponse(); use Apache::externalresponse(); use Apache::rankresponse(); use Apache::matchresponse(); use Apache::chemresponse(); use Apache::drawimage(); use Apache::Constants qw(:common); use HTML::Entities(); use Apache::loncommon(); use Apache::lonlocal; use Time::HiRes qw( gettimeofday tv_interval ); use Apache::lonnet(); # FIXME - improve commenting BEGIN { &Apache::lonxml::register_insert(); } # # Decides what targets to render for. # Implicit inputs: # Various session environment variables: # request.state - published - is a /res/ resource # uploaded - is a /uploaded/ resource # contruct - is a /priv/ resource # form.grade_target - a form parameter requesting a specific target sub get_target { &Apache::lonxml::debug("request.state = $ENV{'request.state'}"); if( defined($ENV{'form.grade_target'})) { &Apache::lonxml::debug("form.grade_target= $ENV{'form.grade_target'}"); } else { &Apache::lonxml::debug("form.grade_target <undefined>"); } if (($ENV{'request.state'} eq "published") || ($ENV{'request.state'} eq "uploaded")) { if ( defined($ENV{'form.grade_target'} ) && ($ENV{'form.grade_target'} eq 'tex')) { return ($ENV{'form.grade_target'}); } elsif ( defined($ENV{'form.grade_target'} ) && ($Apache::lonhomework::viewgrades eq 'F' )) { return ($ENV{'form.grade_target'}); } if ( defined($ENV{'form.submitted'}) && ( !defined($ENV{'form.resetdata'})) && ( !defined($ENV{'form.newrandomization'}))) { return ('grade', 'web'); } else { return ('web'); } } elsif ($ENV{'request.state'} eq "construct") { if ( defined($ENV{'form.grade_target'}) ) { return ($ENV{'form.grade_target'}); } if ( defined($ENV{'form.preview'})) { if ( defined($ENV{'form.submitted'})) { return ('grade', 'web'); } else { return ('web'); } } else { if ( $ENV{'form.problemmode'} eq &mt('View') || $ENV{'form.problemmode'} eq &mt('Discard Edits and View')) { if ( defined($ENV{'form.submitted'}) && (!defined($ENV{'form.resetdata'})) && (!defined($ENV{'form.newrandomization'}))) { return ('grade', 'web','answer'); } else { return ('web','answer'); } } elsif ( $ENV{'form.problemmode'} eq &mt('Edit') || $ENV{'form.problemmode'} eq 'Edit') { if ( $ENV{'form.submitted'} eq 'edit' ) { if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) { return ('modified','web','answer'); } else { return ('modified','edit'); } } else { return ('edit'); } } else { return ('web'); } } } return (); } sub setup_vars { my ($target) = @_; return ';' # return ';$external::target='.$target.';'; } sub send_header { my ($request)= @_; $request->print(&Apache::lontexconvert::header()); # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">'); } sub createmenu { my ($which,$request)=@_; if ($which eq 'grade') { $request->print('<script language="JavaScript"> hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote", "height=350,width=150,menubar=no"); </script>'); } } sub send_footer { my ($request)= @_; # $request->print('</form>'); $request->print(&Apache::lontexconvert::footer()); } $Apache::lonxml::browse=''; sub check_ip_acc { my ($acc)=@_; if (!defined($acc) || $acc =~ /^\s*$/) { return 1; } my $allowed=0; my $ip=$ENV{'REMOTE_ADDR'}; my $name; foreach my $pattern (split(',',$acc)) { if ($pattern =~ /\*$/) { #35.8.* $pattern=~s/\*//; if ($ip =~ /^\Q$pattern\E/) { $allowed=1; } } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) { #35.8.3.[34-56] my $low=$2; my $high=$3; $pattern=$1; if ($ip =~ /^\Q$pattern\E/) { my $last=(split(/\./,$ip))[3]; if ($last <=$high && $last >=$low) { $allowed=1; } } } elsif ($pattern =~ /^\*/) { #*.msu.edu $pattern=~s/\*//; if (!defined($name)) { use Socket; my $netaddr=inet_aton($ip); ($name)=gethostbyaddr($netaddr,AF_INET); } if ($name =~ /\Q$pattern\E$/i) { $allowed=1; } } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) { #127.0.0.1 if ($ip =~ /^\Q$pattern\E/) { $allowed=1; } } else { #some.name.com if (!defined($name)) { use Socket; my $netaddr=inet_aton($ip); ($name)=gethostbyaddr($netaddr,AF_INET); } if ($name =~ /\Q$pattern\E$/i) { $allowed=1; } } if ($allowed) { last; } } return $allowed; } # JB, 9/24/2002: Any changes in this function may require a change # in lonnavmaps::resource::getDateStatus. sub check_access { my ($id) = @_; my $date =''; my $status; my $datemsg = ''; my $lastdate = ''; my $temp; my $type; my $passed; if ($ENV{'request.state'} eq "construct") { if ($ENV{'form.problemstate'}) { if ($ENV{'form.problemstate'} =~ /^CANNOT_ANSWER/) { if ( ! ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct' && lc($Apache::lonhomework::problemstatus) eq 'no')) { return ('CANNOT_ANSWER', &mt('is in this state due to author settings.')); } } else { return ($ENV{'form.problemstate'}, &mt('is in this state due to author settings.')); } } &Apache::lonxml::debug("in construction ignoring dates"); $status='CAN_ANSWER'; $datemsg=&mt('is in under construction'); # return ($status,$datemsg); } &Apache::lonxml::debug("checking for part :$id:"); &Apache::lonxml::debug("time:".time); if ($ENV{'request.state'} ne "construct") { my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc")); if (!$allowed && ($Apache::lonhomework::browse ne 'F')) { $status='INVALID_ACCESS'; $date=&mt("can not be accessed from your location."); return($status,$date); } foreach $temp ("opendate","duedate","answerdate") { $lastdate = $date; $date = &Apache::lonnet::EXT("resource.$id.$temp"); my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type"); if ($thistype =~ /^(con_lost|no_such_host)/ || $date =~ /^(con_lost|no_such_host)/) { $status='UNAVAILABLE'; $date=&mt("may open later."); return($status,$date); } if ($thistype eq 'date_interval') { if ($temp eq 'opendate') { $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date; } if ($temp eq 'answerdate') { $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date; } } &Apache::lonxml::debug("found :$date: for :$temp:"); if ($date eq '') { $date = &mt("an unknown date"); $passed = 0; } elsif ($date eq 'con_lost') { $date = &mt("an indeterminate date"); $passed = 0; } else { if (time < $date) { $passed = 0; } else { $passed = 1; } $date = localtime $date; } if (!$passed) { $type=$temp; last; } } &Apache::lonxml::debug("have :$type:$passed:"); if ($passed) { $status='SHOW_ANSWER'; $datemsg=$date; } elsif ($type eq 'opendate') { $status='CLOSED'; $datemsg = &mt("will open on")." $date"; } elsif ($type eq 'duedate') { $status='CAN_ANSWER'; $datemsg = &mt("is due at")." $date"; } elsif ($type eq 'answerdate') { $status='CLOSED'; $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date"; } } if ($status eq 'CAN_ANSWER') { #check #tries, and if correct. my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); if ( $tries eq '' ) { $tries = '0'; } if ( $maxtries eq '' && $ENV{'request.state'} ne 'construct') { $maxtries = '2'; } if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } # if (correct and show prob status) or excused then CANNOT_ANSWER if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/ && lc($Apache::lonhomework::problemstatus) ne 'no') || $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) { $status = 'CANNOT_ANSWER'; } } if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') { my $interval=&Apache::lonnet::EXT("resource.$id.interval"); &Apache::lonxml::debug("looking for interval $interval"); if ($interval) { my $first_access=&Apache::lonnet::get_first_access('map'); &Apache::lonxml::debug("looking for accesstime $first_access"); if (!$first_access) { $status='NOT_YET_VIEWED'; $datemsg=&seconds_to_human_length($interval); } else { my $newdate=localtime($first_access+$interval); if (time > ($first_access+$interval)) { $status='CLOSED'; $datemsg = &mt("was due on")." $newdate".&mt(", and answers will be available on")." $date"; } else { $datemsg = &mt("is due at")." $newdate"; } } } } #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') && # (!$Apache::lonhomework::history{"resource.0.outtoken"})) { # return ('UNCHECKEDOUT','needs to be checked out'); #} &Apache::lonxml::debug("sending back :$status:$datemsg:"); if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) { &Apache::lonxml::debug("should be allowed to browse a resource when closed"); $status='CAN_ANSWER'; $datemsg=&mt('is closed but you are allowed to view it'); } return ($status,$datemsg); } sub seconds_to_human_length { my ($length)=@_; my $seconds=$length%60; $length=int($length/60); my $minutes=$length%60; $length=int($length/60); my $hours=$length%24; $length=int($length/24); my $days=$length; my $timestr; if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); } if ($hours > 0) { $timestr.=($timestr?", ":""). &mt('[quant,_1,hour]',$hours); } if ($minutes > 0) { $timestr.=($timestr?", ":""). &mt('[quant,_1,minute]',$minutes); } if ($seconds > 0) { $timestr.=($timestr?", ":""). &mt('[quant,_1,second]',$seconds); } return $timestr; } sub showhash { my (%hash) = @_; &showhashsubset(\%hash,'.'); return ''; } sub showarray { my ($array)=@_; my $string="("; foreach my $elm (@{ $array }) { if (ref($elm) eq 'ARRAY') { $string.=&showarray($elm); } elsif (ref($elm) eq 'HASH') { $string.= "HASH --- \n<br />"; $string.= &showhashsubset($elm,'.'); } else { $string.="$elm," } } chop($string); $string.=")"; return $string; } sub showhashsubset { my ($hash,$keyre) = @_; my $resultkey; foreach $resultkey (sort keys %$hash) { if ($resultkey !~ /$keyre/) { next; } if (ref($$hash{$resultkey}) eq 'ARRAY' ) { &Apache::lonxml::debug("$resultkey ---- ". &showarray($$hash{$resultkey})); } elsif (ref($$hash{$resultkey}) eq 'HASH' ) { &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); &showhashsubset($$hash{$resultkey},'.'); } else { &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); } } &Apache::lonxml::debug("\n<br />restored values^</br>\n"); return ''; } sub setuppermissions { $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); if (! $viewgrades && exists($ENV{'request.course.sec'}) && $ENV{'request.course.sec'} !~ /^\s*$/) { $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}. '/'.$ENV{'request.course.sec'}); } $Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt. if ($Apache::lonhomework::browse eq 'F' && $ENV{'form.devalidatecourseresdata'} eq 'on') { my (undef,$courseid) = &Apache::lonxml::whichuser(); &Apache::lonnet::devalidatecourseresdata($ENV{"course.$courseid.num"}, $ENV{"course.$courseid.domain"}); } return '' } sub setupheader { my $request=$_[0]; &Apache::loncommon::content_type($request,'text/html'); if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) { &Apache::loncommon::no_cache($request); } # $request->set_last_modified(&Apache::lonnet::metadata($request->uri, # 'lastrevisiondate')); $request->send_http_header; return OK if $request->header_only; return '' } sub handle_save_or_undo { my ($request,$problem,$result) = @_; my $file = &Apache::lonnet::filelocation("",$request->uri); my $filebak =$file.".bak"; my $filetmp =$file.".tmp"; my $error=0; &Apache::lonnet::correct_line_ends($result); if ($ENV{'form.Undo'} eq &mt('undo')) { my $error=0; if (!copy($file,$filetmp)) { $error=1; } if ((!$error) && (!copy($filebak,$file))) { $error=1; } if ((!$error) && (!move($filetmp,$filebak))) { $error=1; } if (!$error) { &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>"); } else { &Apache::lonxml::info("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>"); $error=1; } } else { my $fs=Apache::File->new(">$filebak"); if (defined($fs)) { print $fs $$problem; &Apache::lonxml::info("<b>".&mt("Making Backup to"). " $filebak</b>"); } else { &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>"); $error=2; } my $fh=Apache::File->new(">$file"); if (defined($fh)) { print $fh $$result; &Apache::lonxml::info("<b>".&mt("Saving Modifications to"). " $file</b>"); } else { &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>". &mt("Unable to write to")." $file</b></font>"); $error|=4; } } return $error; } sub analyze_header { my ($request) = @_; my $bodytag='<body bgcolor="#ffffff">'; if ($ENV{'environment.remote'} eq 'off') { $bodytag=&Apache::loncommon::bodytag(); } my $html=&Apache::lonxml::xmlbegin(); my $result.=$html.' <head><title>'.&mt("Analyzing a problem").'</title></head> '.$bodytag.&Apache::lonxml::message_location().' <form name="lonhomework" method="POST" action="'. &HTML::Entities::encode($ENV{'request.uri'},'<>&"').'">'. &Apache::structuretags::remember_problem_state().' <input type="submit" name="problemmode" value="'.&mt("EditXML").'" /> <input type="submit" name="problemmode" value="'.&mt('Edit').'" /> <hr /> <input type="submit" name="submit" value="'.&mt("View").'" /> <hr /> </form>'; &Apache::lonxml::add_messages(\$result); $request->print($result); $request->rflush(); } sub analyze_footer { my ($request) = @_; my $result='</body></html>'; $request->print($result); $request->rflush(); } sub analyze { my ($request,$file) = @_; &Apache::lonxml::debug("Analyze"); my $result; my %overall; my %allparts; my $rndseed=$ENV{'form.rndseed'}; &analyze_header($request); my %prog_state= &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'), &mt('Getting Problem Variants'), $ENV{'form.numtoanalyze'}, 'inline',undef); for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) { &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state, &mt('last problem')); if (&Apache::loncommon::connection_aborted($request)) { return; } my $subresult=&Apache::lonnet::ssi($request->uri, ('grade_target' => 'analyze'), ('rndseed' => $i+$rndseed)); (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2); my %analyze=&Apache::lonnet::str2hash($subresult); my @parts; if (defined(@{ $analyze{'parts'} })) { @parts=@{ $analyze{'parts'} }; } foreach my $part (@parts) { if (!exists($allparts{$part})) {$allparts{$part}=1;}; if ($analyze{$part.'.type'} eq 'numericalresponse' || $analyze{$part.'.type'} eq 'stringresponse' || $analyze{$part.'.type'} eq 'formularesponse' ) { push( @{ $overall{$part.'.answer'} }, [@{ $analyze{$part.'.answer'} }]); } } } &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state, &mt('Analyzing Results')); $request->print('<hr />'.&mt('List of possible answers').': '); foreach my $part (sort(keys(%allparts))) { if (defined(@{ $overall{$part.'.answer'} })) { my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] }); $request->print('<table><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>'); my %frequency; foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) { $frequency{join("\0",@{ $answer })}++; } $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'</th></tr>'); foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) { $request->print('<tr><td align="right">'. join('</td><td align="right">',split("\0",$answer)). '</td><td>('.$frequency{$answer}. ')</td></tr>'); } $request->print('</table>'); } else { $request->print('<p>'.&mt('Response').' '.$part.' '. &mt('is not analyzable at this time').'</p>'); } } if (scalar(keys(%allparts)) == 0 ) { $request->print('<p>'.&mt('Found no analyzable respones in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>'); } &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state); &analyze_footer($request); &Apache::lonhomework::showhash(%overall); return $result; } sub editxmlmode { my ($request,$file) = @_; my $result; my $problem=&Apache::lonnet::getfile($file); if ($problem eq -1) { &Apache::lonxml::error("<b> ".&mt('Unable to find'). " <i>$file</i></b>"); $problem=''; } if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) { my $error=&handle_save_or_undo($request,\$problem, \$ENV{'form.editxmltext'}); if (!$error) { $problem=&Apache::lonnet::getfile($file); } } &Apache::lonhomework::showhashsubset(\%ENV,'^form'); if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) { &Apache::lonhomework::showhashsubset(\%ENV,'^form'); $ENV{'form.problemmode'}='View'; &renderpage($request,$file); } else { my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem); my $xml_help = '<table><tr><td>'. &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index", "Problem Editing Help"). '</td><td>'. &Apache::loncommon::help_open_menu('',undef,undef,undef,5,'Authoring'). '</td></tr></table>'; if ($cols > 80) { $cols = 80; } if ($cols < 70) { $cols = 70; } if ($rows < 20) { $rows = 20; } my $bodytag='<body bgcolor="#ffffff">'; if ($ENV{'environment.remote'} eq 'off') { $bodytag=&Apache::loncommon::bodytag(); } my $html=&Apache::lonxml::xmlbegin(); $result.=$html.$bodytag.&Apache::lonxml::message_location().' <form name="lonhomework" method="POST" action="'. &HTML::Entities::encode($ENV{'request.uri'},'<>&"').'">'. &Apache::structuretags::remember_problem_state().' <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" /> <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" /> <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" /> <hr /> <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" /> <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /> <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr /> ' . $xml_help . ' <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'. &HTML::Entities::encode($problem,'<>&"').'</textarea> </form></body></html>'; &Apache::lonxml::add_messages(\$result); $request->print($result); } return ''; } # # Render the page in whatever target desired. # sub renderpage { my ($request,$file) = @_; my (@targets) = &get_target(); &Apache::lonhomework::showhashsubset(\%ENV,'form.'); &Apache::lonxml::debug("Running targets ".join(':',@targets)); my $overall_result; foreach my $target (@targets) { # FIXME need to do something intelligent when a problem goes # from viewable to not viewable due to map conditions #&setuppermissions(); #if ( $Apache::lonhomework::browse ne '2' # && $Apache::lonhomework::browse ne 'F' ) { # $request->print(" You most likely shouldn't see me."); #} #my $t0 = [&gettimeofday()]; my $problem=&Apache::lonnet::getfile($file); if ($problem eq -1) { &Apache::lonxml::error("<b> ".&mt('Unable to find')." <i>$file</i></b>"); $problem=''; } my %mystyle; my $result = ''; if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); } if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); } if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');} &Apache::lonxml::debug("Should be parsing now"); $result = &Apache::lonxml::xmlparse($request, $target, $problem, &setup_vars($target),%mystyle); undef($Apache::lonhomework::parsing_a_problem); #$request->print("Result follows:"); if ($target eq 'modified') { &handle_save_or_undo($request,\$problem,\$result); } else { if ($target eq 'analyze') { $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze); undef(%Apache::lonhomework::analyze); } #my $td=&tv_interval($t0); #if ( $Apache::lonxml::debug) { #$result =~ s:</body>::; #$result.="<br />Spent $td seconds processing target $target\n</body>"; #} # $request->print($result); $overall_result.=$result; # $request->rflush(); } #$request->print(":Result ends"); #my $td=&tv_interval($t0); } &Apache::lonxml::add_messages(\$overall_result); $request->print($overall_result); $request->rflush(); } # with no arg it returns a HTML <option> list of the template titles # with one arg it returns the filename associated with the arg passed sub get_template_list { my ($namewanted,$extension) = @_; my $result; my @allnames; &Apache::lonxml::debug("Looking for :$extension:"); foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) { my $name=&Apache::lonnet::metadata($file,'title'); if ($namewanted && ($name eq $namewanted)) { $result=$file; last; } else { if ($name) { push (@allnames, $name); } } } if (@allnames && !$result) { $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>". join('</option><option>',sort(@allnames)).'</option>'; } return $result; } sub newproblem { my ($request) = @_; my $extension=$request->uri; $extension=~s:^.*\.([\w]+)$:$1:; &Apache::lonxml::debug("Looking for :$extension:"); my $templatelist=&get_template_list('',$extension); if ($ENV{'form.template'} && $ENV{'form.template'} ne "Select a $extension template") { use File::Copy; my $file = &get_template_list($ENV{'form.template'},$extension); my $dest = &Apache::lonnet::filelocation("",$request->uri); copy($file,$dest); &renderpage($request,$dest); } elsif($ENV{'form.newfile'} && !$templatelist) { # I don't like hard-coded filenames but for now, this will work. use File::Copy; my $templatefilename = $request->dir_config('lonIncludes').'/templates/blank.problem'; &Apache::lonxml::debug("$templatefilename"); my $dest = &Apache::lonnet::filelocation("",$request->uri); copy($templatefilename,$dest); &renderpage($request,$dest); } else { my $url=&HTML::Entities::encode($request->uri,'<>&"'); my $shownurl=$url; $shownurl=~s-^/~-/priv/-; my $dest = &Apache::lonnet::filelocation("",$request->uri); my $errormsg; if ($ENV{'form.newfile'}) { $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n"; } my $instructions; my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef, ($ENV{'environment.remote'} ne 'off')); if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");} my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new', 'resource' => 'resource', 'requested' => 'The requested file', 'not exist' => 'currently does not exist', 'createnew' => 'To create a new', 'click' => 'click on the', 'Create' => 'Create', 'button' => 'button'); $request->print(<<ENDNEWPROBLEM); $bodytag <h1>$lt{'create'} $extension $lt{'resource'}</h1> $errormsg $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}. <p> <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b> </p> <p><form action="$url" method="POST"> ENDNEWPROBLEM if (defined($templatelist)) { $request->print("<select name=\"template\">$templatelist</select>"); } $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />"); $request->print("</form></p></body>"); } return ''; } sub view_or_edit_menu { my ($request) = @_; my $url=&HTML::Entities::encode($request->uri,'<>&"'); my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to', 'view' => 'View', 'Edit' => 'edit', 'or' => 'or', 'the problem' => 'the problem'); $request->print(<<EDITMENU); <body bgcolor="#FFFFFF"> <form action="$url" method="POST"> $lt{'would'} <input type="submit" name="problemmode" accesskey="v" value="<{'view'}"> <{'or'} <input type="submit" name="problemmode" accesskey="e" value="<{'Edit'}"> <{'the problem'}. </form> </body> EDITMENU } sub handler { #my $t0 = [&gettimeofday()]; my $request=$_[0]; $Apache::lonxml::debug=$ENV{'user.debug'}; $ENV{'request.uri'}=$request->uri; &setuppermissions(); # some times multiple problemmodes are submitted, need to select # the last one if ( defined($ENV{'form.problemmode'}) && ref($ENV{'form.problemmode'}) ) { my $mode=$ENV{'form.problemmode'}->[-1]; undef $ENV{'form.problemmode'}; $ENV{'form.problemmode'}=$mode; } my $file=&Apache::lonnet::filelocation("",$request->uri); #check if we know where we are if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { # if we are browsing we might not be able to know where we are if ($Apache::lonhomework::browse ne 'F' && $ENV{'request.state'} ne "construct") { #should know where we are, so ask if ( &Apache::lonnet::mod_perl_version() == 2 ) { &Apache::lonnet::cleanenv(); } &Apache::lonnet::logthis(&Apache::lonnet::mod_perl_version()); $request->internal_redirect('/adm/ambiguous'); return OK; } } if (&setupheader($request)) { return OK; } &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:"); &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'}); my ($symb) = &Apache::lonxml::whichuser(); &Apache::lonxml::debug('symb is '.$symb); if ($ENV{'request.state'} eq "construct" || $symb eq '') { if ($ENV{'form.resetdata'} eq &mt('Reset Submissions') || $ENV{'form.resetdata'} eq &mt('New Problem Variation') || $ENV{'form.newrandomization'} eq &mt('New Randomization')) { my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); &Apache::lonnet::tmpreset($symb,'',$domain,$name); &Apache::lonxml::debug("Attempt reset"); } } if ($ENV{'request.state'} eq "construct") { if ( -e $file ) { &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['problemmode']); if (!(defined $ENV{'form.problemmode'})) { #first visit to problem in construction space #&view_or_edit_menu($request); $ENV{'form.problemmode'}='View'; &renderpage($request,$file); } elsif ($ENV{'form.problemmode'} eq &mt('EditXML') || $ENV{'form.problemmode'} eq 'EditXML') { &editxmlmode($request,$file); } elsif ($ENV{'form.problemmode'} eq &mt('Calculate answers')) { &analyze($request,$file); } else { &renderpage($request,$file); } } else { # requested file doesn't exist in contruction space &newproblem($request); } } else { # just render the page normally outside of construction space &Apache::lonxml::debug("not construct"); &renderpage($request,$file); } #my $td=&tv_interval($t0); #&Apache::lonxml::debug("Spent $td seconds processing"); # &Apache::lonhomework::send_footer($request); # always turn off debug messages $Apache::lonxml::debug=0; return OK; } 1; __END__