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version 1.18, 2001/10/26 17:09:04
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version 1.289, 2004/09/14 18:05:30
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| # The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
| # Navigate Maps Handler |
# Navigate Maps Handler |
| # |
# |
| # (Page Handler |
# $Id$ |
| # |
# |
| # (TeX Content Handler |
# Copyright Michigan State University Board of Trustees |
| # |
# |
| # 05/29/00,05/30 Gerd Kortemeyer) |
# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
| # 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, |
|
| # 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16 Gerd Kortemeyer) |
|
| # |
# |
| # 3/1/1,6/1,17/1,29/1,30/1,2/8,9/21,9/24,9/25 Gerd Kortemeyer |
# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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### |
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|
| package Apache::lonnavmaps; |
package Apache::lonnavmaps; |
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|
| use strict; |
use strict; |
| use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
| use Apache::lonnet(); |
|
| use Apache::loncommon(); |
use Apache::loncommon(); |
| use HTML::TokeParser; |
use Apache::lonmenu(); |
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use Apache::lonlocal; |
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use POSIX qw (floor strftime); |
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use Data::Dumper; # for debugging, not always used |
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|
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# symbolic constants |
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sub SYMB { return 1; } |
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sub URL { return 2; } |
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sub NOTHING { return 3; } |
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|
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# Some data |
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|
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my $resObj = "Apache::lonnavmaps::resource"; |
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|
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# Keep these mappings in sync with lonquickgrades, which uses the colors |
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# instead of the icons. |
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my %statusIconMap = |
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( |
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$resObj->CLOSED => '', |
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$resObj->OPEN => 'navmap.open.gif', |
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$resObj->CORRECT => 'navmap.correct.gif', |
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$resObj->INCORRECT => 'navmap.wrong.gif', |
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$resObj->ATTEMPTED => 'navmap.ellipsis.gif', |
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$resObj->ERROR => '' |
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); |
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|
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my %iconAltTags = |
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( 'navmap.correct.gif' => 'Correct', |
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'navmap.wrong.gif' => 'Incorrect', |
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'navmap.open.gif' => 'Open' ); |
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|
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# Defines a status->color mapping, null string means don't color |
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my %colormap = |
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( $resObj->NETWORK_FAILURE => '', |
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$resObj->CORRECT => '', |
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$resObj->EXCUSED => '#3333FF', |
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$resObj->PAST_DUE_ANSWER_LATER => '', |
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$resObj->PAST_DUE_NO_ANSWER => '', |
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$resObj->ANSWER_OPEN => '#006600', |
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$resObj->OPEN_LATER => '', |
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$resObj->TRIES_LEFT => '', |
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$resObj->INCORRECT => '', |
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$resObj->OPEN => '', |
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$resObj->NOTHING_SET => '', |
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$resObj->ATTEMPTED => '', |
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$resObj->ANSWER_SUBMITTED => '' |
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); |
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# And a special case in the nav map; what to do when the assignment |
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# is not yet done and due in less then 24 hours |
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my $hurryUpColor = "#FF0000"; |
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|
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sub launch_win { |
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my ($mode,$script,$toplinkitems)=@_; |
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my $result; |
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if ($script ne 'no') { |
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$result.='<script type="text/javascript">'; |
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} |
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$result.='function launch_navmapwin() { |
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newWindow=open(\'/adm/navmaps?launchExternal\',\'loncapanav\',\'width=400,height=600,scrollbars=1\'); |
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}'; |
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if ($mode eq 'now') { |
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$result.="\nlaunch_navmapwin();\n"; |
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} |
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if ($script ne 'no') { |
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$result.='</script>'; |
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} |
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if ($mode eq 'link') { |
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&add_linkitem($toplinkitems,'launchnav','launch_navmapwin()', |
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"Launch navigation window"); |
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} |
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return $result; |
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} |
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|
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sub close { |
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if ($ENV{'environment.remotenavmap'} ne 'on') { return ''; } |
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return(<<ENDCLOSE); |
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<script type="text/javascript"> |
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window.status='Accessing Nav Control'; |
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menu=window.open("/adm/rat/empty.html","loncapanav", |
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"height=600,width=400,scrollbars=1"); |
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window.status='Closing Nav Control'; |
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menu.close(); |
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window.status='Done.'; |
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</script> |
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ENDCLOSE |
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} |
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|
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sub nav_control_js { |
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my $nav=($ENV{'environment.remotenavmap'} eq 'on'); |
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return (<<NAVCONTROL); |
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var w_loncapanav_flag="$nav"; |
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|
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|
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function gonav(url) { |
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if (w_loncapanav_flag != 1) { |
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go(url); |
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} else { |
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navwindow=window.open(url, |
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"loncapanav","height=600,width=400,scrollbars=1"); |
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} |
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} |
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NAVCONTROL |
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} |
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|
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sub update { |
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if ($ENV{'environment.remotenavmap'} ne 'on') { return ''; } |
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if (!$ENV{'request.course.id'}) { return ''; } |
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if ($ENV{'REQUEST_URI'}=~m|^/adm/navmaps|) { return ''; } |
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return(<<ENDUPDATE); |
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<form name="navform"></form> |
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<script type="text/javascript"> |
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this.document.navform.action='/adm/navmaps#curloc'; |
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this.document.navform.target='loncapanav'; |
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this.document.navform.submit(); |
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</script> |
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ENDUPDATE |
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} |
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|
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sub handler { |
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my $r = shift; |
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real_handler($r); |
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} |
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|
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sub real_handler { |
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my $r = shift; |
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|
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# Handle header-only request |
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if ($r->header_only) { |
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if ($ENV{'browser.mathml'}) { |
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&Apache::loncommon::content_type($r,'text/xml'); |
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} else { |
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&Apache::loncommon::content_type($r,'text/html'); |
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} |
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$r->send_http_header; |
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return OK; |
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} |
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|
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# Send header, don't cache this page |
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if ($ENV{'browser.mathml'}) { |
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&Apache::loncommon::content_type($r,'text/xml'); |
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} else { |
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&Apache::loncommon::content_type($r,'text/html'); |
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} |
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&Apache::loncommon::no_cache($r); |
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$r->send_http_header; |
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|
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my %toplinkitems=(); |
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|
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if ($ENV{QUERY_STRING} eq 'collapseExternal') { |
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&Apache::lonnet::put('environment',{'remotenavmap' => 'off'}); |
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&Apache::lonnet::appenv('environment.remotenavmap' => 'off'); |
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my $menu=&Apache::lonmenu::reopenmenu(); |
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my $navstatus=&Apache::lonmenu::get_nav_status(); |
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if ($menu) { |
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$menu=(<<MENU) |
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swmenu=$menu |
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swmenu.clearTimeout(swmenu.menucltim); |
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$navstatus |
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MENU |
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} else { |
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my $nothing = &Apache::lonhtmlcommon::javascript_nothing(); |
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my $mainwindow='window.open('.$nothing.',"loncapaclient","",false);'; |
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$menu=(<<MENU) |
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swmenu=$mainwindow |
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$navstatus |
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MENU |
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} |
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$r->print(<<"ENDSUBM"); |
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<html> |
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<head> |
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<script type="text/javascript"> |
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function submitthis() { |
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$menu |
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self.close(); |
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} |
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|
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</script> |
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</head> |
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<body bgcolor="#FFFFFF" onLoad="submitthis()"></body> |
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</html> |
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ENDSUBM |
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return; |
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} |
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if ($ENV{QUERY_STRING} eq 'launchExternal') { |
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&Apache::lonnet::put('environment',{'remotenavmap' => 'on'}); |
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&Apache::lonnet::appenv('environment.remotenavmap' => 'on'); |
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} |
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|
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# Create the nav map |
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my $navmap = Apache::lonnavmaps::navmap->new(); |
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|
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if (!defined($navmap)) { |
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my $requrl = $r->uri; |
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$ENV{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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|
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$r->print("<html><head>\n"); |
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$r->print("<title>".&mt('Navigate Course Contents')."</title>"); |
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# ------------------------------------------------------------ Get query string |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort','showOnlyHomework']); |
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|
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# ----------------------------------------------------- Force menu registration |
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my $addentries=''; |
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my $more_unload; |
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my $body_only=''; |
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if ($ENV{'environment.remotenavmap'} eq 'on') { |
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$r->print('<script type="text/javascript"> |
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function collapse() { |
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this.document.location="/adm/navmaps?collapseExternal"; |
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} |
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</script>'); |
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# FIXME need to be smarter to only catch window close events |
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# $more_unload="collapse()" |
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$body_only=1; |
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} |
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if ($ENV{'form.register'}) { |
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$addentries=' onLoad="'.&Apache::lonmenu::loadevents(). |
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'" onUnload="'.&Apache::lonmenu::unloadevents().';'. |
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$more_unload.'"'; |
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$r->print(&Apache::lonmenu::registerurl(1)); |
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} else { |
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$addentries=' onUnload="'.$more_unload.'"'; |
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} |
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|
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# Header |
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$r->print('</head>'. |
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&Apache::loncommon::bodytag('Navigate Course Contents','', |
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$addentries,$body_only,'', |
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$ENV{'form.register'})); |
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$r->print('<script>window.focus();</script>'); |
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|
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$r->rflush(); |
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|
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# Check that it's defined |
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if (!($navmap->courseMapDefined())) { |
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$r->print(&Apache::loncommon::help_open_menu('','Navigation Screen','Navigation_Screen','',undef,'RAT')); |
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$r->print('<font size="+2" color="red">Coursemap undefined.</font>' . |
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'</body></html>'); |
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return OK; |
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} |
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|
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# See if there's only one map in the top-level, if we don't |
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# already have a filter... if so, automatically display it |
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# (older code; should use retrieveResources) |
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if ($ENV{QUERY_STRING} !~ /filter/) { |
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my $iterator = $navmap->getIterator(undef, undef, undef, 0); |
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my $curRes; |
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my $sequenceCount = 0; |
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my $sequenceId; |
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while ($curRes = $iterator->next()) { |
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if (ref($curRes) && $curRes->is_sequence()) { |
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$sequenceCount++; |
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$sequenceId = $curRes->map_pc(); |
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} |
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} |
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|
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if ($sequenceCount == 1) { |
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# The automatic iterator creation in the render call |
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# will pick this up. We know the condition because |
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# the defined($ENV{'form.filter'}) also ensures this |
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# is a fresh call. |
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$ENV{'form.filter'} = "$sequenceId"; |
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} |
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} |
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|
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if ($ENV{QUERY_STRING} eq 'launchExternal') { |
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$r->print(' |
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<form name="returnwin" action="/adm/flip?postdata=return%3a" |
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method="post" target="loncapaclient"> |
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</form>'); |
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$r->print(' |
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<script type="text/javascript"> |
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this.document.returnwin.submit(); |
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</script>'); |
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} |
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|
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if ($ENV{'environment.remotenavmap'} ne 'on') { |
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$r->print(&launch_win('link','yes',\%toplinkitems)); |
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} |
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if ($ENV{'environment.remotenavmap'} eq 'on') { |
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&add_linkitem(\%toplinkitems,'closenav','collapse()', |
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"Close navigation window"); |
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} |
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|
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my $jumpToFirstHomework = 0; |
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# Check to see if the student is jumping to next open, do-able problem |
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if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) { |
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$jumpToFirstHomework = 1; |
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# Find the next homework problem that they can do. |
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my $iterator = $navmap->getIterator(undef, undef, undef, 1); |
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my $curRes; |
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my $foundDoableProblem = 0; |
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my $problemRes; |
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|
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while (($curRes = $iterator->next()) && !$foundDoableProblem) { |
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if (ref($curRes) && $curRes->is_problem()) { |
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my $status = $curRes->status(); |
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if ($curRes->completable()) { |
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$problemRes = $curRes; |
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$foundDoableProblem = 1; |
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|
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# Pop open all previous maps |
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my $stack = $iterator->getStack(); |
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pop @$stack; # last resource in the stack is the problem |
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# itself, which we don't need in the map stack |
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my @mapPcs = map {$_->map_pc()} @$stack; |
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$ENV{'form.filter'} = join(',', @mapPcs); |
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|
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# Mark as both "here" and "jump" |
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$ENV{'form.postsymb'} = $curRes->symb(); |
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} |
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} |
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} |
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|
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# If we found no problems, print a note to that effect. |
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if (!$foundDoableProblem) { |
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$r->print("<font size='+2'>All homework assignments have been completed.</font><br /><br />"); |
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} |
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} else { |
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&add_linkitem(\%toplinkitems,'firsthomework', |
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'location.href="navmaps?jumpToFirstHomework"', |
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"Show Me My First Homework Problem"); |
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} |
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|
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my $suppressEmptySequences = 0; |
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my $filterFunc = undef; |
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my $resource_no_folder_link = 0; |
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|
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# Display only due homework. |
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my $showOnlyHomework = 0; |
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if ($ENV{'form.showOnlyHomework'} eq "1") { |
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$showOnlyHomework = 1; |
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$suppressEmptySequences = 1; |
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$filterFunc = sub { my $res = shift; |
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return $res->completable() || $res->is_map(); |
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}; |
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&add_linkitem(\%toplinkitems,'everything', |
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'location.href="locatnavmaps?sort='.$ENV{'form.sort'}.'"', |
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"Show Everything"); |
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$r->print("<p><font size='+2'>".&mt("Uncompleted Homework")."</font></p>"); |
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$ENV{'form.filter'} = ''; |
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$ENV{'form.condition'} = 1; |
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$resource_no_folder_link = 1; |
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} else { |
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&add_linkitem(\%toplinkitems,'uncompleted', |
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'location.href="navmaps?sort='.$ENV{'form.sort'}. |
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'&showOnlyHomework=1"', |
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"Show Only Uncompleted Homework"); |
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} |
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|
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my %selected=($ENV{'form.sort'} => 'selected=on'); |
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my $sort_html=("<form> |
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<nobr> |
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<input type=\"hidden\" name=\"showOnlyHomework\" value=\"".$ENV{'form.showOnlyHomework'}."\" /> |
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<input type=\"submit\" value=\"".&mt('Sort by:')."\" /> |
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<select name=\"sort\"> |
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<option value=\"default\" $selected{'default'}>".&mt('Default')."</option> |
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<option value=\"title\" $selected{'title'} >".&mt('Title')."</option> |
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<option value=\"duedate\" $selected{'duedate'}>".&mt('Duedate')."</option> |
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</select> |
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</nobr> |
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</form>"); |
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# renderer call |
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my $renderArgs = { 'cols' => [0,1,2,3], |
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'sort' => $ENV{'form.sort'}, |
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'url' => '/adm/navmaps', |
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'navmap' => $navmap, |
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'suppressNavmap' => 1, |
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'suppressEmptySequences' => $suppressEmptySequences, |
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'filterFunc' => $filterFunc, |
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'resource_no_folder_link' => $resource_no_folder_link, |
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'sort_html'=> $sort_html, |
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'r' => $r, |
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'caller' => 'navmapsdisplay', |
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'linkitems' => \%toplinkitems}; |
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my $render = render($renderArgs); |
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$navmap->untieHashes(); |
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|
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# If no resources were printed, print a reassuring message so the |
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# user knows there was no error. |
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if ($renderArgs->{'counter'} == 0) { |
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if ($showOnlyHomework) { |
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$r->print("<p><font size='+1'>".&mt("All homework is currently completed").".</font></p>"); |
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} else { # both jumpToFirstHomework and normal use the same: course must be empty |
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$r->print("<p><font size='+1'>This course is empty.</font></p>"); |
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} |
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} |
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|
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$r->print("</body></html>"); |
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$r->rflush(); |
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|
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return OK; |
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} |
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|
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# Convenience functions: Returns a string that adds or subtracts |
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# the second argument from the first hash, appropriate for the |
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# query string that determines which folders to recurse on |
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sub addToFilter { |
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my $hashIn = shift; |
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my $addition = shift; |
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my %hash = %$hashIn; |
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$hash{$addition} = 1; |
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|
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return join (",", keys(%hash)); |
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} |
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|
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sub removeFromFilter { |
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my $hashIn = shift; |
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my $subtraction = shift; |
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my %hash = %$hashIn; |
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|
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delete $hash{$subtraction}; |
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return join(",", keys(%hash)); |
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} |
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|
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# Convenience function: Given a stack returned from getStack on the iterator, |
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# return the correct src() value. |
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# Later, this should add an anchor when we start putting anchors in pages. |
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sub getLinkForResource { |
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my $stack = shift; |
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my $res; |
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|
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# Check to see if there are any pages in the stack |
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foreach $res (@$stack) { |
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if (defined($res)) { |
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if ($res->is_page()) { |
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return $res->src(); |
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} |
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# in case folder was skipped over as "only sequence" |
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my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb()); |
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if ($map=~/\.page$/) { |
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return &Apache::lonnet::clutter($map).'#'. |
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&Apache::lonnet::escape(&Apache::lonnet::declutter($src)); |
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} |
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} |
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} |
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|
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# Failing that, return the src of the last resource that is defined |
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# (when we first recurse on a map, it puts an undefined resource |
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# on the bottom because $self->{HERE} isn't defined yet, and we |
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# want the src for the map anyhow) |
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foreach (@$stack) { |
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if (defined($_)) { $res = $_; } |
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} |
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|
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return $res->src(); |
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} |
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|
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# Convenience function: This separates the logic of how to create |
| |
# the problem text strings ("Due: DATE", "Open: DATE", "Not yet assigned", |
| |
# etc.) into a separate function. It takes a resource object as the |
| |
# first parameter, and the part number of the resource as the second. |
| |
# It's basically a big switch statement on the status of the resource. |
| |
|
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sub getDescription { |
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my $res = shift; |
| |
my $part = shift; |
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my $status = $res->status($part); |
| |
|
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if ($status == $res->NETWORK_FAILURE) { |
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return &mt("Having technical difficulties; please check status later"); |
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} |
| |
if ($status == $res->NOTHING_SET) { |
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return &mt("Not currently assigned."); |
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} |
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if ($status == $res->OPEN_LATER) { |
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return "Open " . timeToHumanString($res->opendate($part)); |
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} |
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if ($status == $res->OPEN) { |
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if ($res->duedate($part)) { |
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return &mt("Due")." " .timeToHumanString($res->duedate($part)); |
| |
} else { |
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return &mt("Open, no due date"); |
| |
} |
| |
} |
| |
if ($status == $res->PAST_DUE_ANSWER_LATER) { |
| |
return &mt("Answer open")." " . timeToHumanString($res->answerdate($part)); |
| |
} |
| |
if ($status == $res->PAST_DUE_NO_ANSWER) { |
| |
return &mt("Was due")." " . timeToHumanString($res->duedate($part)); |
| |
} |
| |
if ($status == $res->ANSWER_OPEN) { |
| |
return &mt("Answer available"); |
| |
} |
| |
if ($status == $res->EXCUSED) { |
| |
return &mt("Excused by instructor"); |
| |
} |
| |
if ($status == $res->ATTEMPTED) { |
| |
return &mt("Answer submitted, not yet graded"); |
| |
} |
| |
if ($status == $res->TRIES_LEFT) { |
| |
my $tries = $res->tries($part); |
| |
my $maxtries = $res->maxtries($part); |
| |
my $triesString = ""; |
| |
if ($tries && $maxtries) { |
| |
$triesString = "<font size=\"-1\"><i>($tries of $maxtries tries used)</i></font>"; |
| |
if ($maxtries > 1 && $maxtries - $tries == 1) { |
| |
$triesString = "<b>$triesString</b>"; |
| |
} |
| |
} |
| |
if ($res->duedate($part)) { |
| |
return &mt("Due")." " . timeToHumanString($res->duedate($part)) . |
| |
" $triesString"; |
| |
} else { |
| |
return &mt("No due date")." $triesString"; |
| |
} |
| |
} |
| |
if ($status == $res->ANSWER_SUBMITTED) { |
| |
return &mt('Answer submitted'); |
| |
} |
| |
} |
| |
|
| |
# Convenience function, so others can use it: Is the problem due in less then |
| |
# 24 hours, and still can be done? |
| |
|
| |
sub dueInLessThan24Hours { |
| |
my $res = shift; |
| |
my $part = shift; |
| |
my $status = $res->status($part); |
| |
|
| |
return ($status == $res->OPEN() || |
| |
$status == $res->TRIES_LEFT()) && |
| |
$res->duedate($part) && $res->duedate($part) < time()+(24*60*60) && |
| |
$res->duedate($part) > time(); |
| |
} |
| |
|
| |
# Convenience function, so others can use it: Is there only one try remaining for the |
| |
# part, with more then one try to begin with, not due yet and still can be done? |
| |
sub lastTry { |
| |
my $res = shift; |
| |
my $part = shift; |
| |
|
| |
my $tries = $res->tries($part); |
| |
my $maxtries = $res->maxtries($part); |
| |
return $tries && $maxtries && $maxtries > 1 && |
| |
$maxtries - $tries == 1 && $res->duedate($part) && |
| |
$res->duedate($part) > time(); |
| |
} |
| |
|
| |
# This puts a human-readable name on the ENV variable. |
| |
|
| |
sub advancedUser { |
| |
return $ENV{'request.role.adv'}; |
| |
} |
| |
|
| |
|
| |
# timeToHumanString takes a time number and converts it to a |
| |
# human-readable representation, meant to be used in the following |
| |
# manner: |
| |
# print "Due $timestring" |
| |
# print "Open $timestring" |
| |
# print "Answer available $timestring" |
| |
# Very, very, very, VERY English-only... goodness help a localizer on |
| |
# this func... |
| |
sub timeToHumanString { |
| |
my ($time) = @_; |
| |
# zero, '0' and blank are bad times |
| |
if (!$time) { |
| |
return &mt('never'); |
| |
} |
| |
unless (&Apache::lonlocal::current_language()=~/^en/) { |
| |
return &Apache::lonlocal::locallocaltime($time); |
| |
} |
| |
my $now = time(); |
| |
|
| |
my @time = localtime($time); |
| |
my @now = localtime($now); |
| |
|
| |
# Positive = future |
| |
my $delta = $time - $now; |
| |
|
| |
my $minute = 60; |
| |
my $hour = 60 * $minute; |
| |
my $day = 24 * $hour; |
| |
my $week = 7 * $day; |
| |
my $inPast = 0; |
| |
|
| |
# Logic in comments: |
| |
# Is it now? (extremely unlikely) |
| |
if ( $delta == 0 ) { |
| |
return "this instant"; |
| |
} |
| |
|
| |
if ($delta < 0) { |
| |
$inPast = 1; |
| |
$delta = -$delta; |
| |
} |
| |
|
| |
if ( $delta > 0 ) { |
| |
|
| |
my $tense = $inPast ? " ago" : ""; |
| |
my $prefix = $inPast ? "" : "in "; |
| |
|
| |
# Less then a minute |
| |
if ( $delta < $minute ) { |
| |
if ($delta == 1) { return "${prefix}1 second$tense"; } |
| |
return "$prefix$delta seconds$tense"; |
| |
} |
| |
|
| |
# Less then an hour |
| |
if ( $delta < $hour ) { |
| |
# If so, use minutes |
| |
my $minutes = floor($delta / 60); |
| |
if ($minutes == 1) { return "${prefix}1 minute$tense"; } |
| |
return "$prefix$minutes minutes$tense"; |
| |
} |
| |
|
| |
# Is it less then 24 hours away? If so, |
| |
# display hours + minutes |
| |
if ( $delta < $hour * 24) { |
| |
my $hours = floor($delta / $hour); |
| |
my $minutes = floor(($delta % $hour) / $minute); |
| |
my $hourString = "$hours hours"; |
| |
my $minuteString = ", $minutes minutes"; |
| |
if ($hours == 1) { |
| |
$hourString = "1 hour"; |
| |
} |
| |
if ($minutes == 1) { |
| |
$minuteString = ", 1 minute"; |
| |
} |
| |
if ($minutes == 0) { |
| |
$minuteString = ""; |
| |
} |
| |
return "$prefix$hourString$minuteString$tense"; |
| |
} |
| |
|
| |
# Less then 5 days away, display day of the week and |
| |
# HH:MM |
| |
if ( $delta < $day * 5 ) { |
| |
my $timeStr = strftime("%A, %b %e at %I:%M %P", localtime($time)); |
| |
$timeStr =~ s/12:00 am/00:00/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return ($inPast ? "last " : "next ") . |
| |
$timeStr; |
| |
} |
| |
|
| |
# Is it this year? |
| |
if ( $time[5] == $now[5]) { |
| |
# Return on Month Day, HH:MM meridian |
| |
my $timeStr = strftime("on %A, %b %e at %I:%M %P", localtime($time)); |
| |
$timeStr =~ s/12:00 am/00:00/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return $timeStr; |
| |
} |
| |
|
| |
# Not this year, so show the year |
| |
my $timeStr = strftime("on %A, %b %e %Y at %I:%M %P", localtime($time)); |
| |
$timeStr =~ s/12:00 am/00:00/; |
| |
$timeStr =~ s/12:00 pm/noon/; |
| |
return $timeStr; |
| |
} |
| |
} |
| |
|
| |
|
| |
=pod |
| |
|
| |
=head1 NAME |
| |
|
| |
Apache::lonnavmap - Subroutines to handle and render the navigation |
| |
maps |
| |
|
| |
=head1 SYNOPSIS |
| |
|
| |
The main handler generates the navigational listing for the course, |
| |
the other objects export this information in a usable fashion for |
| |
other modules. |
| |
|
| |
=head1 OVERVIEW |
| |
|
| |
X<lonnavmaps, overview> When a user enters a course, LON-CAPA examines the |
| |
course structure and caches it in what is often referred to as the |
| |
"big hash" X<big hash>. You can see it if you are logged into |
| |
LON-CAPA, in a course, by going to /adm/test. (You may need to |
| |
tweak the /home/httpd/lonTabs/htpasswd file to view it.) The |
| |
content of the hash will be under the heading "Big Hash". |
| |
|
| |
Big Hash contains, among other things, how resources are related |
| |
to each other (next/previous), what resources are maps, which |
| |
resources are being chosen to not show to the student (for random |
| |
selection), and a lot of other things that can take a lot of time |
| |
to compute due to the amount of data that needs to be collected and |
| |
processed. |
| |
|
| |
Apache::lonnavmaps provides an object model for manipulating this |
| |
information in a higher-level fashion then directly manipulating |
| |
the hash. It also provides access to several auxilary functions |
| |
that aren't necessarily stored in the Big Hash, but are a per- |
| |
resource sort of value, like whether there is any feedback on |
| |
a given resource. |
| |
|
| |
Apache::lonnavmaps also abstracts away branching, and someday, |
| |
conditions, for the times where you don't really care about those |
| |
things. |
| |
|
| |
Apache::lonnavmaps also provides fairly powerful routines for |
| |
rendering navmaps, and last but not least, provides the navmaps |
| |
view for when the user clicks the NAV button. |
| |
|
| |
B<Note>: Apache::lonnavmaps I<only> works for the "currently |
| |
logged in user"; if you want things like "due dates for another |
| |
student" lonnavmaps can not directly retrieve information like |
| |
that. You need the EXT function. This module can still help, |
| |
because many things, such as the course structure, are constant |
| |
between users, and Apache::lonnavmaps can help by providing |
| |
symbs for the EXT call. |
| |
|
| |
The rest of this file will cover the provided rendering routines, |
| |
which can often be used without fiddling with the navmap object at |
| |
all, then documents the Apache::lonnavmaps::navmap object, which |
| |
is the key to accessing the Big Hash information, covers the use |
| |
of the Iterator (which provides the logic for traversing the |
| |
somewhat-complicated Big Hash data structure), documents the |
| |
Apache::lonnavmaps::Resource objects that are returned by |
| |
|
| |
=head1 Subroutine: render |
| |
|
| |
The navmap renderer package provides a sophisticated rendering of the |
| |
standard navigation maps interface into HTML. The provided nav map |
| |
handler is actually just a glorified call to this. |
| |
|
| |
Because of the large number of parameters this function accepts, |
| |
instead of passing it arguments as is normal, pass it in an anonymous |
| |
hash with the desired options. |
| |
|
| |
The package provides a function called 'render', called as |
| |
Apache::lonnavmaps::render({}). |
| |
|
| |
=head2 Overview of Columns |
| |
|
| |
The renderer will build an HTML table for the navmap and return |
| |
it. The table is consists of several columns, and a row for each |
| |
resource (or possibly each part). You tell the renderer how many |
| |
columns to create and what to place in each column, optionally using |
| |
one or more of the prepared columns, and the renderer will assemble |
| |
the table. |
| |
|
| |
Any additional generally useful column types should be placed in the |
| |
renderer code here, so anybody can use it anywhere else. Any code |
| |
specific to the current application (such as the addition of <input> |
| |
elements in a column) should be placed in the code of the thing using |
| |
the renderer. |
| |
|
| |
At the core of the renderer is the array reference COLS (see Example |
| |
section below for how to pass this correctly). The COLS array will |
| |
consist of entries of one of two types of things: Either an integer |
| |
representing one of the pre-packaged column types, or a sub reference |
| |
that takes a resource reference, a part number, and a reference to the |
| |
argument hash passed to the renderer, and returns a string that will |
| |
be inserted into the HTML representation as it. |
| |
|
| |
All other parameters are ways of either changing how the columns |
| |
are printing, or which rows are shown. |
| |
|
| |
The pre-packaged column names are refered to by constants in the |
| |
Apache::lonnavmaps namespace. The following currently exist: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<Apache::lonnavmaps::resource>: |
| |
|
| |
The general info about the resource: Link, icon for the type, etc. The |
| |
first column in the standard nav map display. This column provides the |
| |
indentation effect seen in the B<NAV> screen. This column also accepts |
| |
the following parameters in the renderer hash: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<resource_nolink>: default false |
| |
|
| |
If true, the resource will not be linked. By default, all non-folder |
| |
resources are linked. |
| |
|
| |
=item * B<resource_part_count>: default true |
| |
|
| |
If true, the resource will show a part count B<if> the full |
| |
part list is not displayed. (See "condense_parts" later.) If false, |
| |
the resource will never show a part count. |
| |
|
| |
=item * B<resource_no_folder_link>: |
| |
|
| |
If true, the resource's folder will not be clickable to open or close |
| |
it. Default is false. True implies printCloseAll is false, since you |
| |
can't close or open folders when this is on anyhow. |
| |
|
| |
=back |
| |
|
| |
=item * B<Apache::lonnavmaps::communication_status>: |
| |
|
| |
Whether there is discussion on the resource, email for the user, or |
| |
(lumped in here) perl errors in the execution of the problem. This is |
| |
the second column in the main nav map. |
| |
|
| |
=item * B<Apache::lonnavmaps::quick_status>: |
| |
|
| |
An icon for the status of a problem, with five possible states: |
| |
Correct, incorrect, open, awaiting grading (for a problem where the |
| |
computer's grade is suppressed, or the computer can't grade, like |
| |
essay problem), or none (not open yet, not a problem). The |
| |
third column of the standard navmap. |
| |
|
| |
=item * B<Apache::lonnavmaps::long_status>: |
| |
|
| |
A text readout of the details of the current status of the problem, |
| |
such as "Due in 22 hours". The fourth column of the standard navmap. |
| |
|
| |
=item * B<Apache::lonnavmaps::part_status_summary>: |
| |
|
| |
A text readout summarizing the status of the problem. If it is a |
| |
single part problem, will display "Correct", "Incorrect", |
| |
"Not yet open", "Open", "Attempted", or "Error". If there are |
| |
multiple parts, this will output a string that in HTML will show a |
| |
status of how many parts are in each status, in color coding, trying |
| |
to match the colors of the icons within reason. |
| |
|
| |
Note this only makes sense if you are I<not> showing parts. If |
| |
C<showParts> is true (see below), this column will not output |
| |
anything. |
| |
|
| |
=back |
| |
|
| |
If you add any others please be sure to document them here. |
| |
|
| |
An example of a column renderer that will show the ID number of a |
| |
resource, along with the part name if any: |
| |
|
| |
sub { |
| |
my ($resource, $part, $params) = @_; |
| |
if ($part) { return '<td>' . $resource->{ID} . ' ' . $part . '</td>'; } |
| |
return '<td>' . $resource->{ID} . '</td>'; |
| |
} |
| |
|
| |
Note these functions are responsible for the TD tags, which allow them |
| |
to override vertical and horizontal alignment, etc. |
| |
|
| |
=head2 Parameters |
| |
|
| |
Minimally, you should be |
| |
able to get away with just using 'cols' (to specify the columns |
| |
shown), 'url' (necessary for the folders to link to the current screen |
| |
correctly), and possibly 'queryString' if your app calls for it. In |
| |
that case, maintaining the state of the folders will be done |
| |
automatically. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<iterator>: default: constructs one from %ENV |
| |
|
| |
A reference to a fresh ::iterator to use from the navmaps. The |
| |
rendering will reflect the options passed to the iterator, so you can |
| |
use that to just render a certain part of the course, if you like. If |
| |
one is not passed, the renderer will attempt to construct one from |
| |
ENV{'form.filter'} and ENV{'form.condition'} information, plus the |
| |
'iterator_map' parameter if any. |
| |
|
| |
=item * B<iterator_map>: default: not used |
| |
|
| |
If you are letting the renderer do the iterator handling, you can |
| |
instruct the renderer to render only a particular map by passing it |
| |
the source of the map you want to process, like |
| |
'/res/103/jerf/navmap.course.sequence'. |
| |
|
| |
=item * B<navmap>: default: constructs one from %ENV |
| |
|
| |
A reference to a navmap, used only if an iterator is not passed in. If |
| |
this is necessary to make an iterator but it is not passed in, a new |
| |
one will be constructed based on ENV info. This is useful to do basic |
| |
error checking before passing it off to render. |
| |
|
| |
=item * B<r>: default: must be passed in |
| |
|
| |
The standard Apache response object. This must be passed to the |
| |
renderer or the course hash will be locked. |
| |
|
| |
=item * B<cols>: default: empty (useless) |
| |
|
| |
An array reference |
| |
|
| |
=item * B<showParts>:default true |
| |
|
| |
A flag. If true, a line for the resource itself, and a line |
| |
for each part will be displayed. If not, only one line for each |
| |
resource will be displayed. |
| |
|
| |
=item * B<condenseParts>: default true |
| |
|
| |
A flag. If true, if all parts of the problem have the same |
| |
status and that status is Nothing Set, Correct, or Network Failure, |
| |
then only one line will be displayed for that resource anyhow. If no, |
| |
all parts will always be displayed. If showParts is 0, this is |
| |
ignored. |
| |
|
| |
=item * B<jumpCount>: default: determined from %ENV |
| |
|
| |
A string identifying the URL to place the anchor 'curloc' at. |
| |
It is the responsibility of the renderer user to |
| |
ensure that the #curloc is in the URL. By default, determined through |
| |
the use of the ENV{} 'jump' information, and should normally "just |
| |
work" correctly. |
| |
|
| |
=item * B<here>: default: empty string |
| |
|
| |
A Symb identifying where to place the 'here' marker. The empty |
| |
string means no marker. |
| |
|
| |
=item * B<indentString>: default: 25 pixel whitespace image |
| |
|
| |
A string identifying the indentation string to use. |
| |
|
| |
=item * B<queryString>: default: empty |
| |
|
| |
A string which will be prepended to the query string used when the |
| |
folders are opened or closed. You can use this to pass |
| |
application-specific values. |
| |
|
| |
=item * B<url>: default: none |
| |
|
| |
The url the folders will link to, which should be the current |
| |
page. Required if the resource info column is shown, and you |
| |
are allowing the user to open and close folders. |
| |
|
| |
=item * B<currentJumpIndex>: default: no jumping |
| |
|
| |
Describes the currently-open row number to cause the browser to jump |
| |
to, because the user just opened that folder. By default, pulled from |
| |
the Jump information in the ENV{'form.*'}. |
| |
|
| |
=item * B<printKey>: default: false |
| |
|
| |
If true, print the key that appears on the top of the standard |
| |
navmaps. |
| |
|
| |
=item * B<printCloseAll>: default: true |
| |
|
| |
If true, print the "Close all folders" or "open all folders" |
| |
links. |
| |
|
| |
=item * B<filterFunc>: default: sub {return 1;} (accept everything) |
| |
|
| |
A function that takes the resource object as its only parameter and |
| |
returns a true or false value. If true, the resource is displayed. If |
| |
false, it is simply skipped in the display. |
| |
|
| |
=item * B<suppressEmptySequences>: default: false |
| |
|
| |
If you're using a filter function, and displaying sequences to orient |
| |
the user, then frequently some sequences will be empty. Setting this to |
| |
true will cause those sequences not to display, so as not to confuse the |
| |
user into thinking that if the sequence is there there should be things |
| |
under it; for example, see the "Show Uncompleted Homework" view on the |
| |
B<NAV> screen. |
| |
|
| |
=item * B<suppressNavmaps>: default: false |
| |
|
| |
If true, will not display Navigate Content resources. |
| |
|
| |
=back |
| |
|
| |
=head2 Additional Info |
| |
|
| |
In addition to the parameters you can pass to the renderer, which will |
| |
be passed through unchange to the column renderers, the renderer will |
| |
generate the following information which your renderer may find |
| |
useful: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<counter>: |
| |
|
| |
Contains the number of rows printed. Useful after calling the render |
| |
function, as you can detect whether anything was printed at all. |
| |
|
| |
=item * B<isNewBranch>: |
| |
|
| |
Useful for renderers: If this resource is currently the first resource |
| |
of a new branch, this will be true. The Resource column (leftmost in the |
| |
navmaps screen) uses this to display the "new branch" icon |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub resource { return 0; } |
| |
sub communication_status { return 1; } |
| |
sub quick_status { return 2; } |
| |
sub long_status { return 3; } |
| |
sub part_status_summary { return 4; } |
| |
|
| |
sub render_resource { |
| |
my ($resource, $part, $params) = @_; |
| |
|
| |
my $nonLinkedText = ''; # stuff after resource title not in link |
| |
|
| |
my $link = $params->{"resourceLink"}; |
| |
my $src = $resource->src(); |
| |
my $it = $params->{"iterator"}; |
| |
my $filter = $it->{FILTER}; |
| |
|
| |
my $title = $resource->compTitle(); |
| |
|
| |
my $partLabel = ""; |
| |
my $newBranchText = ""; |
| |
|
| |
# If this is a new branch, label it so |
| |
if ($params->{'isNewBranch'}) { |
| |
$newBranchText = "<img src='/adm/lonIcons/branch.gif' border='0' />"; |
| |
} |
| |
|
| |
# links to open and close the folder |
| |
my $linkopen = "<a href='$link'>"; |
| |
my $linkclose = "</a>"; |
| |
|
| |
# Default icon: unknown page |
| |
my $icon = "<img src='/adm/lonIcons/unknown.gif' alt='' border='0' />"; |
| |
|
| |
if ($resource->is_problem()) { |
| |
if ($part eq '0' || $params->{'condensed'}) { |
| |
$icon = '<img src="/adm/lonIcons/problem.gif" alt="" border="0" />'; |
| |
} else { |
| |
$icon = $params->{'indentString'}; |
| |
} |
| |
} else { |
| |
$icon = "<img src='".&Apache::loncommon::icon($resource->src). |
| |
"' alt='' border='0' />"; |
| |
} |
| |
|
| |
# Display the correct map icon to open or shut map |
| |
if ($resource->is_map()) { |
| |
my $mapId = $resource->map_pc(); |
| |
my $nowOpen = !defined($filter->{$mapId}); |
| |
if ($it->{CONDITION}) { |
| |
$nowOpen = !$nowOpen; |
| |
} |
| |
|
| |
my $folderType = $resource->is_sequence() ? 'folder' : 'page'; |
| |
|
| |
if (!$params->{'resource_no_folder_link'}) { |
| |
$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif'; |
| |
$icon = "<img src='/adm/lonIcons/$icon' alt='' border='0' />"; |
| |
|
| |
$linkopen = "<a href='" . $params->{'url'} . '?' . |
| |
$params->{'queryString'} . '&filter='; |
| |
$linkopen .= ($nowOpen xor $it->{CONDITION}) ? |
| |
addToFilter($filter, $mapId) : |
| |
removeFromFilter($filter, $mapId); |
| |
$linkopen .= "&condition=" . $it->{CONDITION} . '&hereType=' |
| |
. $params->{'hereType'} . '&here=' . |
| |
&Apache::lonnet::escape($params->{'here'}) . |
| |
'&jump=' . |
| |
&Apache::lonnet::escape($resource->symb()) . |
| |
"&folderManip=1'>"; |
| |
} else { |
| |
# Don't allow users to manipulate folder |
| |
$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . |
| |
'.nomanip.gif'; |
| |
$icon = "<img src='/adm/lonIcons/$icon' alt='' border='0' />"; |
| |
|
| |
$linkopen = ""; |
| |
$linkclose = ""; |
| |
} |
| |
} |
| |
|
| |
if ($resource->randomout()) { |
| |
$nonLinkedText .= ' <i>(hidden)</i> '; |
| |
} |
| |
|
| |
# We're done preparing and finally ready to start the rendering |
| |
my $result = "<td align='left' valign='center'>"; |
| |
|
| |
my $indentLevel = $params->{'indentLevel'}; |
| |
if ($newBranchText) { $indentLevel--; } |
| |
|
| |
# print indentation |
| |
for (my $i = 0; $i < $indentLevel; $i++) { |
| |
$result .= $params->{'indentString'}; |
| |
} |
| |
|
| |
# Decide what to display |
| |
$result .= "$newBranchText$linkopen$icon$linkclose"; |
| |
|
| |
my $curMarkerBegin = ''; |
| |
my $curMarkerEnd = ''; |
| |
|
| |
# Is this the current resource? |
| |
if (!$params->{'displayedHereMarker'} && |
| |
$resource->symb() eq $params->{'here'} ) { |
| |
$curMarkerBegin = '<font color="red" size="+2">> </font>'; |
| |
$curMarkerEnd = '<font color="red" size="+2"><</font>'; |
| |
$params->{'displayedHereMarker'} = 1; |
| |
} |
| |
|
| |
if ($resource->is_problem() && $part ne '0' && |
| |
!$params->{'condensed'}) { |
| |
my $displaypart=$resource->part_display($part); |
| |
$partLabel = " (Part: $displaypart)"; |
| |
$link.='#'.&Apache::lonnet::escape($part); |
| |
$title = ""; |
| |
} |
| |
|
| |
if ($params->{'condensed'} && $resource->countParts() > 1) { |
| |
$nonLinkedText .= ' (' . $resource->countParts() . ' parts)'; |
| |
} |
| |
|
| |
my $target; |
| |
if ($ENV{'environment.remotenavmap'} eq 'on') { |
| |
$target=' target="loncapaclient" '; |
| |
} |
| |
if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) { |
| |
$result .= " $curMarkerBegin<a $target href='$link'>$title$partLabel</a>$curMarkerEnd $nonLinkedText</td>"; |
| |
} else { |
| |
$result .= " $curMarkerBegin$title$partLabel$curMarkerEnd $nonLinkedText</td>"; |
| |
} |
| |
|
| |
return $result; |
| |
} |
| |
|
| |
sub render_communication_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = ""; |
| |
|
| |
my $link = $params->{"resourceLink"}; |
| |
my $linkopen = "<a href='$link'>"; |
| |
my $linkclose = "</a>"; |
| |
|
| |
if ($resource->hasDiscussion()) { |
| |
$discussionHTML = $linkopen . |
| |
'<img border="0" src="/adm/lonMisc/chat.gif" />' . |
| |
$linkclose; |
| |
} |
| |
|
| |
if ($resource->getFeedback()) { |
| |
my $feedback = $resource->getFeedback(); |
| |
foreach (split(/\,/, $feedback)) { |
| |
if ($_) { |
| |
$feedbackHTML .= ' <a href="/adm/email?display=' |
| |
. &Apache::lonnet::escape($_) . '">' |
| |
. '<img src="/adm/lonMisc/feedback.gif" ' |
| |
. 'border="0" /></a>'; |
| |
} |
| |
} |
| |
} |
| |
|
| |
if ($resource->getErrors()) { |
| |
my $errors = $resource->getErrors(); |
| |
my $errorcount = 0; |
| |
foreach (split(/,/, $errors)) { |
| |
last if ($errorcount>=10); # Only output 10 bombs maximum |
| |
if ($_) { |
| |
$errorcount++; |
| |
$errorHTML .= ' <a href="/adm/email?display=' |
| |
. &Apache::lonnet::escape($_) . '">' |
| |
. '<img src="/adm/lonMisc/bomb.gif" ' |
| |
. 'border="0" /></a>'; |
| |
} |
| |
} |
| |
} |
| |
|
| |
if ($params->{'multipart'} && $part != '0') { |
| |
$discussionHTML = $feedbackHTML = $errorHTML = ''; |
| |
} |
| |
|
| |
return "<td width=\"75\" align=\"left\" valign=\"center\">$discussionHTML$feedbackHTML$errorHTML </td>"; |
| |
|
| |
} |
| |
sub render_quick_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $result = ""; |
| |
my $firstDisplayed = !$params->{'condensed'} && |
| |
$params->{'multipart'} && $part eq "0"; |
| |
|
| |
my $link = $params->{"resourceLink"}; |
| |
my $linkopen = "<a href='$link'>"; |
| |
my $linkclose = "</a>"; |
| |
|
| |
if ($resource->is_problem() && |
| |
!$firstDisplayed) { |
| |
|
| |
my $icon = $statusIconMap{$resource->simpleStatus($part)}; |
| |
my $alt = $iconAltTags{$icon}; |
| |
if ($icon) { |
| |
$result .= "<td width='30' valign='center' width='50' align='right'>$linkopen<img width='25' height='25' src='/adm/lonIcons/$icon' border='0' alt='$alt' />$linkclose</td>\n"; |
| |
} else { |
| |
$result .= "<td width='30'> </td>\n"; |
| |
} |
| |
} else { # not problem, no icon |
| |
$result .= "<td width='30'> </td>\n"; |
| |
} |
| |
|
| |
return $result; |
| |
} |
| |
sub render_long_status { |
| |
my ($resource, $part, $params) = @_; |
| |
my $result = "<td align='right' valign='center'>\n"; |
| |
my $firstDisplayed = !$params->{'condensed'} && |
| |
$params->{'multipart'} && $part eq "0"; |
| |
|
| |
my $color; |
| |
if ($resource->is_problem()) { |
| |
$color = $colormap{$resource->status}; |
| |
|
| |
if (dueInLessThan24Hours($resource, $part) || |
| |
lastTry($resource, $part)) { |
| |
$color = $hurryUpColor; |
| |
} |
| |
} |
| |
|
| |
if ($resource->kind() eq "res" && |
| |
$resource->is_problem() && |
| |
!$firstDisplayed) { |
| |
if ($color) {$result .= "<font color=\"$color\"><b>"; } |
| |
$result .= getDescription($resource, $part); |
| |
if ($color) {$result .= "</b></font>"; } |
| |
} |
| |
if ($resource->is_map() && advancedUser() && $resource->randompick()) { |
| |
$result .= '(randomly select ' . $resource->randompick() .')'; |
| |
} |
| |
|
| |
# Debugging code |
| |
#$result .= " " . $resource->awarded($part) . '/' . $resource->weight($part) . |
| |
# ' - Part: ' . $part; |
| |
|
| |
$result .= "</td>\n"; |
| |
|
| |
return $result; |
| |
} |
| |
|
| |
# Colors obtained by taking the icons, matching the colors, and |
| |
# possibly reducing the Value (HSV) of the color, if it's too bright |
| |
# for text, generally by one third or so. |
| |
my %statusColors = |
| |
( |
| |
$resObj->CLOSED => '#000000', |
| |
$resObj->OPEN => '#998b13', |
| |
$resObj->CORRECT => '#26933f', |
| |
$resObj->INCORRECT => '#c48207', |
| |
$resObj->ATTEMPTED => '#a87510', |
| |
$resObj->ERROR => '#000000' |
| |
); |
| |
my %statusStrings = |
| |
( |
| |
$resObj->CLOSED => 'Not yet open', |
| |
$resObj->OPEN => 'Open', |
| |
$resObj->CORRECT => 'Correct', |
| |
$resObj->INCORRECT => 'Incorrect', |
| |
$resObj->ATTEMPTED => 'Attempted', |
| |
$resObj->ERROR => 'Network Error' |
| |
); |
| |
my @statuses = ($resObj->CORRECT, $resObj->ATTEMPTED, $resObj->INCORRECT, $resObj->OPEN, $resObj->CLOSED, $resObj->ERROR); |
| |
|
| |
use Data::Dumper; |
| |
sub render_parts_summary_status { |
| |
my ($resource, $part, $params) = @_; |
| |
if (!$resource->is_problem() && !$resource->contains_problem) { return '<td></td>'; } |
| |
if ($params->{showParts}) { |
| |
return '<td></td>'; |
| |
} |
| |
|
| |
my $td = "<td align='right'>\n"; |
| |
my $endtd = "</td>\n"; |
| |
my @probs; |
| |
|
| |
if ($resource->contains_problem) { |
| |
@probs=$resource->retrieveResources($resource,sub { $_[0]->is_problem() },1,0); |
| |
} else { |
| |
@probs=($resource); |
| |
} |
| |
my $return; |
| |
my %overallstatus; |
| |
my $totalParts; |
| |
foreach my $resource (@probs) { |
| |
# If there is a single part, just show the simple status |
| |
if ($resource->singlepart()) { |
| |
my $status = $resource->simpleStatus(${$resource->parts}[0]); |
| |
$overallstatus{$status}++; |
| |
$totalParts++; |
| |
next; |
| |
} |
| |
# Now we can be sure the $part doesn't really matter. |
| |
my $statusCount = $resource->simpleStatusCount(); |
| |
my @counts; |
| |
foreach my $status (@statuses) { |
| |
# decouple display order from the simpleStatusCount order |
| |
my $slot = Apache::lonnavmaps::resource::statusToSlot($status); |
| |
if ($statusCount->[$slot]) { |
| |
$overallstatus{$status}+=$statusCount->[$slot]; |
| |
$totalParts+=$statusCount->[$slot]; |
| |
} |
| |
} |
| |
} |
| |
$return.= $td . $totalParts . ' parts: '; |
| |
foreach my $status (@statuses) { |
| |
if ($overallstatus{$status}) { |
| |
$return.="<font color='" . $statusColors{$status} . |
| |
"'>" . $overallstatus{$status} . ' ' |
| |
. $statusStrings{$status} . "</font>"; |
| |
} |
| |
} |
| |
$return.= $endtd; |
| |
return $return; |
| |
} |
| |
|
| |
my @preparedColumns = (\&render_resource, \&render_communication_status, |
| |
\&render_quick_status, \&render_long_status, |
| |
\&render_parts_summary_status); |
| |
|
| |
sub setDefault { |
| |
my ($val, $default) = @_; |
| |
if (!defined($val)) { return $default; } |
| |
return $val; |
| |
} |
| |
|
| |
sub render { |
| |
my $args = shift; |
| |
&Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING}); |
| |
my $result = ''; |
| |
|
| |
# Configure the renderer. |
| |
my $cols = $args->{'cols'}; |
| |
if (!defined($cols)) { |
| |
# no columns, no nav maps. |
| |
return ''; |
| |
} |
| |
my $mustCloseNavMap = 0; |
| |
my $navmap; |
| |
if (defined($args->{'navmap'})) { |
| |
$navmap = $args->{'navmap'}; |
| |
} |
| |
|
| |
my $r = $args->{'r'}; |
| |
my $queryString = $args->{'queryString'}; |
| |
my $jump = $args->{'jump'}; |
| |
my $here = $args->{'here'}; |
| |
my $suppressNavmap = setDefault($args->{'suppressNavmap'}, 0); |
| |
my $closeAllPages = setDefault($args->{'closeAllPages'}, 0); |
| |
my $currentJumpDelta = 2; # change this to change how many resources are displayed |
| |
# before the current resource when using #current |
| |
|
| |
# If we were passed 'here' information, we are not rendering |
| |
# after a folder manipulation, and we were not passed an |
| |
# iterator, make sure we open the folders to show the "here" |
| |
# marker |
| |
my $filterHash = {}; |
| |
# Figure out what we're not displaying |
| |
foreach (split(/\,/, $ENV{"form.filter"})) { |
| |
if ($_) { |
| |
$filterHash->{$_} = "1"; |
| |
} |
| |
} |
| |
|
| |
# Filter: Remember filter function and add our own filter: Refuse |
| |
# to show hidden resources unless the user can see them. |
| |
my $userCanSeeHidden = advancedUser(); |
| |
my $filterFunc = setDefault($args->{'filterFunc'}, |
| |
sub {return 1;}); |
| |
if (!$userCanSeeHidden) { |
| |
# Without renaming the filterfunc, the server seems to go into |
| |
# an infinite loop |
| |
my $oldFilterFunc = $filterFunc; |
| |
$filterFunc = sub { my $res = shift; return !$res->randomout() && |
| |
&$oldFilterFunc($res);}; |
| |
} |
| |
|
| |
my $condition = 0; |
| |
if ($ENV{'form.condition'}) { |
| |
$condition = 1; |
| |
} |
| |
|
| |
if (!$ENV{'form.folderManip'} && !defined($args->{'iterator'})) { |
| |
# Step 1: Check to see if we have a navmap |
| |
if (!defined($navmap)) { |
| |
$navmap = Apache::lonnavmaps::navmap->new(); |
| |
$mustCloseNavMap = 1; |
| |
} |
| |
|
| |
# Step two: Locate what kind of here marker is necessary |
| |
# Determine where the "here" marker is and where the screen jumps to. |
| |
|
| |
if ($ENV{'form.postsymb'}) { |
| |
$here = $jump = $ENV{'form.postsymb'}; |
| |
} elsif ($ENV{'form.postdata'}) { |
| |
# couldn't find a symb, is there a URL? |
| |
my $currenturl = $ENV{'form.postdata'}; |
| |
#$currenturl=~s/^http\:\/\///; |
| |
#$currenturl=~s/^[^\/]+//; |
| |
|
| |
$here = $jump = &Apache::lonnet::symbread($currenturl); |
| |
} |
| |
|
| |
# Step three: Ensure the folders are open |
| |
my $mapIterator = $navmap->getIterator(undef, undef, undef, 1); |
| |
my $curRes; |
| |
my $found = 0; |
| |
|
| |
# We only need to do this if we need to open the maps to show the |
| |
# current position. This will change the counter so we can't count |
| |
# for the jump marker with this loop. |
| |
while (($curRes = $mapIterator->next()) && !$found) { |
| |
if (ref($curRes) && $curRes->symb() eq $here) { |
| |
my $mapStack = $mapIterator->getStack(); |
| |
|
| |
# Ensure the parent maps are open |
| |
for my $map (@{$mapStack}) { |
| |
if ($condition) { |
| |
undef $filterHash->{$map->map_pc()}; |
| |
} else { |
| |
$filterHash->{$map->map_pc()} = 1; |
| |
} |
| |
} |
| |
$found = 1; |
| |
} |
| |
} |
| |
} |
| |
|
| |
if ( !defined($args->{'iterator'}) && $ENV{'form.folderManip'} ) { # we came from a user's manipulation of the nav page |
| |
# If this is a click on a folder or something, we want to preserve the "here" |
| |
# from the querystring, and get the new "jump" marker |
| |
$here = $ENV{'form.here'}; |
| |
$jump = $ENV{'form.jump'}; |
| |
} |
| |
|
| |
my $it = $args->{'iterator'}; |
| |
if (!defined($it)) { |
| |
# Construct a default iterator based on $ENV{'form.'} information |
| |
|
| |
# Step 1: Check to see if we have a navmap |
| |
if (!defined($navmap)) { |
| |
$navmap = Apache::lonnavmaps::navmap->new(); |
| |
$mustCloseNavMap = 1; |
| |
} |
| |
|
| |
# See if we're being passed a specific map |
| |
if ($args->{'iterator_map'}) { |
| |
my $map = $args->{'iterator_map'}; |
| |
$map = $navmap->getResourceByUrl($map); |
| |
my $firstResource = $map->map_start(); |
| |
my $finishResource = $map->map_finish(); |
| |
|
| |
$args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition); |
| |
} else { |
| |
$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition); |
| |
} |
| |
} |
| |
|
| |
# (re-)Locate the jump point, if any |
| |
# Note this does not take filtering or hidden into account... need |
| |
# to be fixed? |
| |
my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0); |
| |
my $curRes; |
| |
my $foundJump = 0; |
| |
my $counter = 0; |
| |
|
| |
while (($curRes = $mapIterator->next()) && !$foundJump) { |
| |
if (ref($curRes)) { $counter++; } |
| |
|
| |
if (ref($curRes) && $jump eq $curRes->symb()) { |
| |
|
| |
# This is why we have to use the main iterator instead of the |
| |
# potentially faster DFS: The count has to be the same, so |
| |
# the order has to be the same, which DFS won't give us. |
| |
$args->{'currentJumpIndex'} = $counter; |
| |
$foundJump = 1; |
| |
} |
| |
} |
| |
|
| |
my $showParts = setDefault($args->{'showParts'}, 1); |
| |
my $condenseParts = setDefault($args->{'condenseParts'}, 1); |
| |
# keeps track of when the current resource is found, |
| |
# so we can back up a few and put the anchor above the |
| |
# current resource |
| |
my $printKey = $args->{'printKey'}; |
| |
my $printCloseAll = $args->{'printCloseAll'}; |
| |
if (!defined($printCloseAll)) { $printCloseAll = 1; } |
| |
|
| |
# Print key? |
| |
if ($printKey) { |
| |
$result .= '<table border="0" cellpadding="2" cellspacing="0">'; |
| |
my $date=localtime; |
| |
$result.='<tr><td align="right" valign="bottom">Key: </td>'; |
| |
if ($navmap->{LAST_CHECK}) { |
| |
$result .= |
| |
'<img src="/adm/lonMisc/chat.gif"> '.&mt('New discussion since').' '. |
| |
strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})). |
| |
'</td><td align="center" valign="bottom"> '. |
| |
'<img src="/adm/lonMisc/feedback.gif"> '.&mt('New message (click to open)').'<p>'. |
| |
'</td>'; |
| |
} else { |
| |
$result .= '<td align="center" valign="bottom"> '. |
| |
'<img src="/adm/lonMisc/chat.gif"> '.&mt('Discussions').'</td><td align="center" valign="bottom">'. |
| |
' <img src="/adm/lonMisc/feedback.gif"> '.&mt('New message (click to open)'). |
| |
'</td>'; |
| |
} |
| |
|
| |
$result .= '</tr></table>'; |
| |
} |
| |
|
| |
if ($printCloseAll && !$args->{'resource_no_folder_link'}) { |
| |
my ($link,$text); |
| |
if ($condition) { |
| |
$link='"navmaps?condition=0&filter=&'.$queryString. |
| |
'&here='.&Apache::lonnet::escape($here).'"'; |
| |
$text='Close All Folders'; |
| |
} else { |
| |
$link='"navmaps?condition=1&filter=&'.$queryString. |
| |
'&here='.&Apache::lonnet::escape($here).'"'; |
| |
$text='Open All Folders'; |
| |
} |
| |
if ($args->{'caller'} eq 'navmapsdisplay') { |
| |
&add_linkitem($args->{'linkitems'},'changefolder', |
| |
'location.href='.$link,$text); |
| |
} else { |
| |
$result.='<a href='.$link.'>'.&mt($text).'</a>'; |
| |
} |
| |
$result .= "\n"; |
| |
} |
| |
|
| |
# Check for any unread discussions in all resources. |
| |
if ($args->{'caller'} eq 'navmapsdisplay') { |
| |
my $totdisc = 0; |
| |
my $haveDisc = ''; |
| |
my @allres=$navmap->retrieveResources(); |
| |
foreach my $resource (@allres) { |
| |
if ($resource->hasDiscussion()) { |
| |
my $ressymb; |
| |
if ($resource->symb() =~ m-(___adm/\w+/\w+)/(\d+)/bulletinboard$-) { |
| |
$ressymb = 'bulletin___'.$2.$1.'/'.$2.'/bulletinboard'; |
| |
} else { |
| |
$ressymb = $resource->symb(); |
| |
} |
| |
$haveDisc .= $ressymb.':'; |
| |
$totdisc ++; |
| |
} |
| |
} |
| |
if ($totdisc > 0) { |
| |
$haveDisc =~ s/:$//; |
| |
my $navurl = $ENV{'QUERY_STRING'}; |
| |
&add_linkitem($args->{'linkitems'},'clearbubbles', |
| |
'document.clearbubbles.submit()', |
| |
'Mark all posts read'); |
| |
$result .= (<<END); |
| |
<form name="clearbubbles" method="post" action="/adm/feedback"> |
| |
<input type="hidden" name="navurl" value="$ENV{'QUERY_STRING'}" /> |
| |
<input type="hidden" name="navmaps" value="$haveDisc" /> |
| |
</form> |
| |
END |
| |
} |
| |
} |
| |
|
| |
if ($args->{'caller'} eq 'navmapsdisplay') { |
| |
$result .= '<table><tr><td>'. |
| |
&Apache::loncommon::help_open_menu('','Navigation Screen','Navigation_Screen','',undef,'RAT').'</td>'; |
| |
if ($ENV{'environment.remotenavmap'} ne 'on') { |
| |
$result .= '<td> </td>'; |
| |
} else { |
| |
$result .= '</tr><tr>'; |
| |
} |
| |
$result.=&show_linkitems($args->{'linkitems'}); |
| |
if ($args->{'sort_html'}) { |
| |
if ($ENV{'environment.remotenavmap'} ne 'on') { |
| |
$result.='<td> </td><td> </td><td> </td>'. |
| |
'<td align="right">'.$args->{'sort_html'}.'</td></tr>'; |
| |
} else { |
| |
$result.='</tr><tr><td align="left"><br />'. |
| |
$args->{'sort_html'}.'</td></tr>'; |
| |
} |
| |
} |
| |
$result .= '</table>'; |
| |
} elsif ($args->{'sort_html'}) { |
| |
$result.=$args->{'sort_html'}; |
| |
} |
| |
|
| |
$result .= "<br />\n"; |
| |
if ($r) { |
| |
$r->print($result); |
| |
$r->rflush(); |
| |
$result = ""; |
| |
} |
| |
# End parameter setting |
| |
|
| |
# Data |
| |
$result .= '<table cellspacing="0" cellpadding="3" border="0" bgcolor="#FFFFFF">' ."\n"; |
| |
my $res = "Apache::lonnavmaps::resource"; |
| |
my %condenseStatuses = |
| |
( $res->NETWORK_FAILURE => 1, |
| |
$res->NOTHING_SET => 1, |
| |
$res->CORRECT => 1 ); |
| |
my @backgroundColors = ("#FFFFFF", "#F6F6F6"); |
| |
|
| |
# Shared variables |
| |
$args->{'counter'} = 0; # counts the rows |
| |
$args->{'indentLevel'} = 0; |
| |
$args->{'isNewBranch'} = 0; |
| |
$args->{'condensed'} = 0; |
| |
$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='/adm/lonIcons/whitespace1.gif' width='25' height='1' alt='' border='0' />"); |
| |
$args->{'displayedHereMarker'} = 0; |
| |
|
| |
# If we're suppressing empty sequences, look for them here. Use DFS for speed, |
| |
# since structure actually doesn't matter, except what map has what resources. |
| |
if ($args->{'suppressEmptySequences'}) { |
| |
my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap, |
| |
$it->{FIRST_RESOURCE}, |
| |
$it->{FINISH_RESOURCE}, |
| |
{}, undef, 1); |
| |
my $depth = 0; |
| |
$dfsit->next(); |
| |
my $curRes = $dfsit->next(); |
| |
while ($depth > -1) { |
| |
if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $dfsit->END_MAP()) { $depth--; } |
| |
|
| |
if (ref($curRes)) { |
| |
# Parallel pre-processing: Do sequences have non-filtered-out children? |
| |
if ($curRes->is_map()) { |
| |
$curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0; |
| |
# Sequences themselves do not count as visible children, |
| |
# unless those sequences also have visible children. |
| |
# This means if a sequence appears, there's a "promise" |
| |
# that there's something under it if you open it, somewhere. |
| |
} else { |
| |
# Not a sequence: if it's filtered, ignore it, otherwise |
| |
# rise up the stack and mark the sequences as having children |
| |
if (&$filterFunc($curRes)) { |
| |
for my $sequence (@{$dfsit->getStack()}) { |
| |
$sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1; |
| |
} |
| |
} |
| |
} |
| |
} |
| |
} continue { |
| |
$curRes = $dfsit->next(); |
| |
} |
| |
} |
| |
|
| |
my $displayedJumpMarker = 0; |
| |
# Set up iteration. |
| |
my $now = time(); |
| |
my $in24Hours = $now + 24 * 60 * 60; |
| |
my $rownum = 0; |
| |
|
| |
# export "here" marker information |
| |
$args->{'here'} = $here; |
| |
|
| |
$args->{'indentLevel'} = -1; # first BEGIN_MAP takes this to 0 |
| |
my @resources; |
| |
my $code='';# sub { !(shift->is_map();) }; |
| |
if ($args->{'sort'} eq 'title') { |
| |
my $oldFilterFunc = $filterFunc; |
| |
my $filterFunc= |
| |
sub { |
| |
my ($res)=@_; |
| |
if ($res->is_map()) { return 0;} |
| |
return &$oldFilterFunc($res); |
| |
}; |
| |
@resources=$navmap->retrieveResources(undef,$filterFunc); |
| |
@resources= sort { |
| |
my ($atitle,$btitle) = (lc($a->compTitle),lc($b->compTitle)); |
| |
$atitle=~s/^\s*//; |
| |
$btitle=~s/^\s*//; |
| |
return $atitle cmp $btitle |
| |
} @resources; |
| |
} elsif ($args->{'sort'} eq 'duedate') { |
| |
@resources=$navmap->retrieveResources(undef, |
| |
sub { shift->is_problem(); }); |
| |
@resources= sort |
| |
{ |
| |
if ($a->duedate ne $b->duedate) { |
| |
return $a->duedate cmp $b->duedate; |
| |
} else { |
| |
lc($a->compTitle) cmp lc($b->compTitle) |
| |
} |
| |
} @resources; |
| |
} else { |
| |
#unknow sort mechanism or default |
| |
undef($args->{'sort'}); |
| |
} |
| |
|
| |
|
| |
while (1) { |
| |
if ($args->{'sort'}) { |
| |
$curRes = shift(@resources); |
| |
} else { |
| |
$curRes = $it->next($closeAllPages); |
| |
} |
| |
if (!$curRes) { last; } |
| |
|
| |
# Maintain indentation level. |
| |
if ($curRes == $it->BEGIN_MAP() || |
| |
$curRes == $it->BEGIN_BRANCH() ) { |
| |
$args->{'indentLevel'}++; |
| |
} |
| |
if ($curRes == $it->END_MAP() || |
| |
$curRes == $it->END_BRANCH() ) { |
| |
$args->{'indentLevel'}--; |
| |
} |
| |
# Notice new branches |
| |
if ($curRes == $it->BEGIN_BRANCH()) { |
| |
$args->{'isNewBranch'} = 1; |
| |
} |
| |
|
| |
# If this isn't an actual resource, continue on |
| |
if (!ref($curRes)) { |
| |
next; |
| |
} |
| |
|
| |
# If this has been filtered out, continue on |
| |
if (!(&$filterFunc($curRes))) { |
| |
$args->{'isNewBranch'} = 0; # Don't falsely remember this |
| |
next; |
| |
} |
| |
|
| |
# If this is an empty sequence and we're filtering them, continue on |
| |
if ($curRes->is_map() && $args->{'suppressEmptySequences'} && |
| |
!$curRes->{DATA}->{HAS_VISIBLE_CHILDREN}) { |
| |
next; |
| |
} |
| |
|
| |
# If we're suppressing navmaps and this is a navmap, continue on |
| |
if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) { |
| |
next; |
| |
} |
| |
|
| |
$args->{'counter'}++; |
| |
|
| |
# Does it have multiple parts? |
| |
$args->{'multipart'} = 0; |
| |
$args->{'condensed'} = 0; |
| |
my @parts; |
| |
|
| |
# Decide what parts to show. |
| |
if ($curRes->is_problem() && $showParts) { |
| |
@parts = @{$curRes->parts()}; |
| |
$args->{'multipart'} = $curRes->multipart(); |
| |
|
| |
if ($condenseParts) { # do the condensation |
| |
if (!$curRes->opendate("0")) { |
| |
@parts = (); |
| |
$args->{'condensed'} = 1; |
| |
} |
| |
if (!$args->{'condensed'}) { |
| |
# Decide whether to condense based on similarity |
| |
my $status = $curRes->status($parts[0]); |
| |
my $due = $curRes->duedate($parts[0]); |
| |
my $open = $curRes->opendate($parts[0]); |
| |
my $statusAllSame = 1; |
| |
my $dueAllSame = 1; |
| |
my $openAllSame = 1; |
| |
for (my $i = 1; $i < scalar(@parts); $i++) { |
| |
if ($curRes->status($parts[$i]) != $status){ |
| |
$statusAllSame = 0; |
| |
} |
| |
if ($curRes->duedate($parts[$i]) != $due ) { |
| |
$dueAllSame = 0; |
| |
} |
| |
if ($curRes->opendate($parts[$i]) != $open) { |
| |
$openAllSame = 0; |
| |
} |
| |
} |
| |
# $*allSame is true if all the statuses were |
| |
# the same. Now, if they are all the same and |
| |
# match one of the statuses to condense, or they |
| |
# are all open with the same due date, or they are |
| |
# all OPEN_LATER with the same open date, display the |
| |
# status of the first non-zero part (to get the 'correct' |
| |
# status right, since 0 is never 'correct' or 'open'). |
| |
if (($statusAllSame && defined($condenseStatuses{$status})) || |
| |
($dueAllSame && $status == $curRes->OPEN && $statusAllSame)|| |
| |
($openAllSame && $status == $curRes->OPEN_LATER && $statusAllSame) ){ |
| |
@parts = ($parts[0]); |
| |
$args->{'condensed'} = 1; |
| |
} |
| |
} |
| |
# Multipart problem with one part: always "condense" (happens |
| |
# to match the desirable behavior) |
| |
if ($curRes->countParts() == 1) { |
| |
@parts = ($parts[0]); |
| |
$args->{'condensed'} = 1; |
| |
} |
| |
} |
| |
} |
| |
|
| |
# If the multipart problem was condensed, "forget" it was multipart |
| |
if (scalar(@parts) == 1) { |
| |
$args->{'multipart'} = 0; |
| |
} else { |
| |
# Add part 0 so we display it correctly. |
| |
unshift @parts, '0'; |
| |
} |
| |
|
| |
# Now, we've decided what parts to show. Loop through them and |
| |
# show them. |
| |
foreach my $part (@parts) { |
| |
$rownum ++; |
| |
my $backgroundColor = $backgroundColors[$rownum % scalar(@backgroundColors)]; |
| |
|
| |
$result .= " <tr bgcolor='$backgroundColor'>\n"; |
| |
|
| |
# Set up some data about the parts that the cols might want |
| |
my $filter = $it->{FILTER}; |
| |
my $src; |
| |
if ($args->{'sort'}) { |
| |
$src = $curRes->src(); # FIXME this is wrong for .pages |
| |
} else { |
| |
my $stack = $it->getStack(); |
| |
$src=getLinkForResource($stack); |
| |
} |
| |
my $anchor=''; |
| |
if ($src=~s/(\#.*)$//) { |
| |
$anchor=$1; |
| |
} |
| |
my $srcHasQuestion = $src =~ /\?/; |
| |
$args->{"resourceLink"} = $src. |
| |
($srcHasQuestion?'&':'?') . |
| |
'symb=' . &Apache::lonnet::escape($curRes->symb()). |
| |
$anchor; |
| |
|
| |
# Now, display each column. |
| |
foreach my $col (@$cols) { |
| |
my $colHTML = ''; |
| |
if (ref($col)) { |
| |
$colHTML .= &$col($curRes, $part, $args); |
| |
} else { |
| |
$colHTML .= &{$preparedColumns[$col]}($curRes, $part, $args); |
| |
} |
| |
|
| |
# If this is the first column and it's time to print |
| |
# the anchor, do so |
| |
if ($col == $cols->[0] && |
| |
$args->{'counter'} == $args->{'currentJumpIndex'} - |
| |
$currentJumpDelta) { |
| |
# Jam the anchor after the <td> tag; |
| |
# necessary for valid HTML (which Mozilla requires) |
| |
$colHTML =~ s/\>/\>\<a name="curloc" \/\>/; |
| |
$displayedJumpMarker = 1; |
| |
} |
| |
$result .= $colHTML . "\n"; |
| |
} |
| |
$result .= " </tr>\n"; |
| |
$args->{'isNewBranch'} = 0; |
| |
} |
| |
|
| |
if ($r && $rownum % 20 == 0) { |
| |
$r->print($result); |
| |
$result = ""; |
| |
$r->rflush(); |
| |
} |
| |
} continue { |
| |
if ($r) { |
| |
# If we have the connection, make sure the user is still connected |
| |
my $c = $r->connection; |
| |
if ($c->aborted()) { |
| |
# Who cares what we do, nobody will see it anyhow. |
| |
return ''; |
| |
} |
| |
} |
| |
} |
| |
|
| |
# Print out the part that jumps to #curloc if it exists |
| |
# delay needed because the browser is processing the jump before |
| |
# it finishes rendering, so it goes to the wrong place! |
| |
# onload might be better, but this routine has no access to that. |
| |
# On mozilla, the 0-millisecond timeout seems to prevent this; |
| |
# it's quite likely this might fix other browsers, too, and |
| |
# certainly won't hurt anything. |
| |
if ($displayedJumpMarker) { |
| |
$result .= " |
| |
<script> |
| |
if (location.href.indexOf('#curloc')==-1) { |
| |
setTimeout(\"location += '#curloc';\", 0) |
| |
} |
| |
</script>"; |
| |
} |
| |
|
| |
$result .= "</table>"; |
| |
|
| |
if ($r) { |
| |
$r->print($result); |
| |
$result = ""; |
| |
$r->rflush(); |
| |
} |
| |
|
| |
if ($mustCloseNavMap) { $navmap->untieHashes(); } |
| |
|
| |
return $result; |
| |
} |
| |
|
| |
sub add_linkitem { |
| |
my ($linkitems,$name,$cmd,$text)=@_; |
| |
$$linkitems{$name}{'cmd'}=$cmd; |
| |
$$linkitems{$name}{'text'}=&mt($text); |
| |
} |
| |
|
| |
sub show_linkitems { |
| |
my ($linkitems)=@_; |
| |
my @linkorder = ("launchnav","closenav","firsthomework","everything", |
| |
"uncompleted","changefolder","clearbubbles"); |
| |
|
| |
my $result .= (<<ENDBLOCK); |
| |
<td align="left"> |
| |
<script type="text/javascript"> |
| |
function changeNavDisplay () { |
| |
var navchoice = document.linkitems.toplink[document.linkitems.toplink.selectedIndex].value; |
| |
ENDBLOCK |
| |
foreach my $link (@linkorder) { |
| |
$result.= "if (navchoice == '$link') {". |
| |
$linkitems->{$link}{'cmd'}."}\n"; |
| |
} |
| |
$result.='} |
| |
</script> |
| |
<form name="linkitems" method="post"> |
| |
<nobr><select name="toplink">'."\n"; |
| |
foreach my $link (@linkorder) { |
| |
if (defined($linkitems->{$link})) { |
| |
if ($linkitems->{$link}{'text'} ne '') { |
| |
$result .= ' <option value="'.$link.'">'. |
| |
$linkitems->{$link}{'text'}."</option>\n"; |
| |
} |
| |
} |
| |
} |
| |
$result .= '</select> <input type="button" name="chgnav" |
| |
value="Go" onClick="javascript:changeNavDisplay()" /> |
| |
</nobr></form></td>'."\n"; |
| |
return $result; |
| |
} |
| |
|
| |
1; |
| |
|
| |
package Apache::lonnavmaps::navmap; |
| |
|
| |
=pod |
| |
|
| |
=head1 Object: Apache::lonnavmaps::navmap |
| |
|
| |
=head2 Overview |
| |
|
| |
The navmap object's job is to provide access to the resources |
| |
in the course as Apache::lonnavmaps::resource objects, and to |
| |
query and manage the relationship between those resource objects. |
| |
|
| |
Generally, you'll use the navmap object in one of three basic ways. |
| |
In order of increasing complexity and power: |
| |
|
| |
=over 4 |
| |
|
| |
=item * C<$navmap-E<gt>getByX>, where X is B<Id>, B<Symb>, B<Url> or B<MapPc>. This provides |
| |
various ways to obtain resource objects, based on various identifiers. |
| |
Use this when you want to request information about one object or |
| |
a handful of resources you already know the identities of, from some |
| |
other source. For more about Ids, Symbs, and MapPcs, see the |
| |
Resource documentation. Note that Url should be a B<last resort>, |
| |
not your first choice; it only works when there is only one |
| |
instance of the resource in the course, which only applies to |
| |
maps, and even that may change in the future. |
| |
|
| |
=item * C<my @resources = $navmap-E<gt>retrieveResources(args)>. This |
| |
retrieves resources matching some criterion and returns them |
| |
in a flat array, with no structure information. Use this when |
| |
you are manipulating a series of resources, based on what map |
| |
the are in, but do not care about branching, or exactly how |
| |
the maps and resources are related. This is the most common case. |
| |
|
| |
=item * C<$it = $navmap-E<gt>getIterator(args)>. This allows you traverse |
| |
the course's navmap in various ways without writing the traversal |
| |
code yourself. See iterator documentation below. Use this when |
| |
you need to know absolutely everything about the course, including |
| |
branches and the precise relationship between maps and resources. |
| |
|
| |
=back |
| |
|
| |
=head2 Creation And Destruction |
| |
|
| |
To create a navmap object, use the following function: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<Apache::lonnavmaps::navmap-E<gt>new>(): |
| |
|
| |
Creates a new navmap object. Returns the navmap object if this is |
| |
successful, or B<undef> if not. |
| |
|
| |
=back |
| |
|
| |
When you are done with the $navmap object, you I<must> call |
| |
$navmap->untieHashes(), or you'll prevent the current user from using that |
| |
course until the web server is restarted. (!) |
| |
|
| |
=head2 Methods |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getIterator>(first, finish, filter, condition): |
| |
|
| |
See iterator documentation below. |
| |
|
| |
=cut |
| |
|
| |
use strict; |
| use GDBM_File; |
use GDBM_File; |
| |
|
| # -------------------------------------------------------------- Module Globals |
sub new { |
| my %hash; |
# magic invocation to create a class instance |
| my @rows; |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
# Resource cache stores navmap resources as we reference them. We generate |
| |
# them on-demand so we don't pay for creating resources unless we use them. |
| |
$self->{RESOURCE_CACHE} = {}; |
| |
|
| |
# Network failure flag, if we accessed the course or user opt and |
| |
# failed |
| |
$self->{NETWORK_FAILURE} = 0; |
| |
|
| |
# tie the nav hash |
| |
|
| |
my %navmaphash; |
| |
my %parmhash; |
| |
my $courseFn = $ENV{"request.course.fn"}; |
| |
if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db", |
| |
&GDBM_READER(), 0640))) { |
| |
return undef; |
| |
} |
| |
|
| |
if (!(tie(%parmhash, 'GDBM_File', "${courseFn}_parms.db", |
| |
&GDBM_READER(), 0640))) |
| |
{ |
| |
untie %{$self->{PARM_HASH}}; |
| |
return undef; |
| |
} |
| |
|
| # |
$self->{NAV_HASH} = \%navmaphash; |
| # These cache hashes need to be independent of user, resource and course |
$self->{PARM_HASH} = \%parmhash; |
| # (user and course can/should be in the keys) |
$self->{PARM_CACHE} = {}; |
| # |
|
| |
|
| my %courserdatas; |
bless($self); |
| my %userrdatas; |
|
| |
return $self; |
| |
} |
| |
|
| # |
sub generate_course_user_opt { |
| # These global hashes are dependent on user, course and resource, |
my $self = shift; |
| # and need to be initialized every time when a sheet is calculated |
if ($self->{COURSE_USER_OPT_GENERATED}) { return; } |
| # |
|
| my %courseopt; |
my $uname=$ENV{'user.name'}; |
| my %useropt; |
my $udom=$ENV{'user.domain'}; |
| my %parmhash; |
my $uhome=$ENV{'user.home'}; |
| |
my $cid=$ENV{'request.course.id'}; |
| |
my $chome=$ENV{'course.'.$cid.'.home'}; |
| |
my ($cdom,$cnum)=split(/\_/,$cid); |
| |
|
| |
my $userprefix=$uname.'_'.$udom.'_'; |
| |
|
| |
my %courserdatas; my %useropt; my %courseopt; my %userrdatas; |
| |
unless ($uhome eq 'no_host') { |
| |
# ------------------------------------------------- Get coursedata (if present) |
| |
unless ((time-$courserdatas{$cid.'.last_cache'})<240) { |
| |
my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum. |
| |
':resourcedata',$chome); |
| |
# Check for network failure |
| |
if ( $reply =~ /no.such.host/i || $reply =~ /con_lost/i) { |
| |
$self->{NETWORK_FAILURE} = 1; |
| |
} elsif ($reply!~/^error\:/) { |
| |
$courserdatas{$cid}=$reply; |
| |
$courserdatas{$cid.'.last_cache'}=time; |
| |
} |
| |
} |
| |
foreach (split(/\&/,$courserdatas{$cid})) { |
| |
my ($name,$value)=split(/\=/,$_); |
| |
$courseopt{$userprefix.&Apache::lonnet::unescape($name)}= |
| |
&Apache::lonnet::unescape($value); |
| |
} |
| |
# --------------------------------------------------- Get userdata (if present) |
| |
unless ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) { |
| |
my $reply=&Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome); |
| |
if ($reply!~/^error\:/) { |
| |
$userrdatas{$uname.'___'.$udom}=$reply; |
| |
$userrdatas{$uname.'___'.$udom.'.last_cache'}=time; |
| |
} |
| |
# check to see if network failed |
| |
elsif ( $reply=~/no.such.host/i || $reply=~/con.*lost/i ) |
| |
{ |
| |
$self->{NETWORK_FAILURE} = 1; |
| |
} |
| |
} |
| |
foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) { |
| |
my ($name,$value)=split(/\=/,$_); |
| |
$useropt{$userprefix.&Apache::lonnet::unescape($name)}= |
| |
&Apache::lonnet::unescape($value); |
| |
} |
| |
$self->{COURSE_OPT} = \%courseopt; |
| |
$self->{USER_OPT} = \%useropt; |
| |
} |
| |
|
| |
$self->{COURSE_USER_OPT_GENERATED} = 1; |
| |
|
| |
return; |
| |
} |
| |
|
| # ------------------------------------------------------------------ Euclid gcd |
sub generate_email_discuss_status { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
if ($self->{EMAIL_DISCUSS_GENERATED}) { return; } |
| |
|
| sub euclid { |
my $cid=$ENV{'request.course.id'}; |
| my ($e,$f)=@_; |
my ($cdom,$cnum)=split(/\_/,$cid); |
| my $a; my $b; my $r; |
|
| if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; } |
my %emailstatus = &Apache::lonnet::dump('email_status'); |
| while ($r!=0) { |
my $logoutTime = $emailstatus{'logout'}; |
| $a=$b; $b=$r; |
my $courseLeaveTime = $emailstatus{'logout_'.$ENV{'request.course.id'}}; |
| $r=$a%$b; |
$self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ? |
| |
$courseLeaveTime : $logoutTime); |
| |
my %discussiontime = &Apache::lonnet::dump('discussiontimes', |
| |
$cdom, $cnum); |
| |
my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss', |
| |
$ENV{'user.domain'},$ENV{'user.name'},'lastread'); |
| |
my %lastreadtime = (); |
| |
foreach (keys %lastread) { |
| |
my $key = $_; |
| |
$key =~ s/_lastread$//; |
| |
$lastreadtime{$key} = $lastread{$_}; |
| } |
} |
| return $b; |
|
| |
my %feedback=(); |
| |
my %error=(); |
| |
my $keys = &Apache::lonnet::reply('keys:'. |
| |
$ENV{'user.domain'}.':'. |
| |
$ENV{'user.name'}.':nohist_email', |
| |
$ENV{'user.home'}); |
| |
|
| |
foreach my $msgid (split(/\&/, $keys)) { |
| |
$msgid=&Apache::lonnet::unescape($msgid); |
| |
my $plain=&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid)); |
| |
if ($plain=~/(Error|Feedback) \[([^\]]+)\]/) { |
| |
my ($what,$url)=($1,$2); |
| |
my %status= |
| |
&Apache::lonnet::get('email_status',[$msgid]); |
| |
if ($status{$msgid}=~/^error\:/) { |
| |
$status{$msgid}=''; |
| |
} |
| |
|
| |
if (($status{$msgid} eq 'new') || |
| |
(!$status{$msgid})) { |
| |
if ($what eq 'Error') { |
| |
$error{$url}.=','.$msgid; |
| |
} else { |
| |
$feedback{$url}.=','.$msgid; |
| |
} |
| |
} |
| |
} |
| |
} |
| |
|
| |
$self->{FEEDBACK} = \%feedback; |
| |
$self->{ERROR_MSG} = \%error; # what is this? JB |
| |
$self->{DISCUSSION_TIME} = \%discussiontime; |
| |
$self->{EMAIL_STATUS} = \%emailstatus; |
| |
$self->{LAST_READ} = \%lastreadtime; |
| |
|
| |
$self->{EMAIL_DISCUSS_GENERATED} = 1; |
| } |
} |
| |
|
| # --------------------------------------------------------------------- Parmval |
sub get_user_data { |
| |
my $self = shift; |
| |
if ($self->{RETRIEVED_USER_DATA}) { return; } |
| |
|
| |
# Retrieve performance data on problems |
| |
my %student_data = Apache::lonnet::currentdump($ENV{'request.course.id'}, |
| |
$ENV{'user.domain'}, |
| |
$ENV{'user.name'}); |
| |
$self->{STUDENT_DATA} = \%student_data; |
| |
|
| # -------------------------------------------- Figure out a cascading parameter |
$self->{RETRIEVED_USER_DATA} = 1; |
| # |
} |
| # For this function to work |
|
| # |
# Internal function: Takes a key to look up in the nav hash and implements internal |
| # * parmhash needs to be tied |
# memory caching of that key. |
| # * courseopt and useropt need to be initialized for this user and course |
sub navhash { |
| # |
my $self = shift; my $key = shift; |
| |
return $self->{NAV_HASH}->{$key}; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<courseMapDefined>(): Returns true if the course map is defined, |
| |
false otherwise. Undefined course maps indicate an error somewhere in |
| |
LON-CAPA, and you will not be able to proceed with using the navmap. |
| |
See the B<NAV> screen for an example of using this. |
| |
|
| |
=cut |
| |
|
| |
# Checks to see if coursemap is defined, matching test in old lonnavmaps |
| |
sub courseMapDefined { |
| |
my $self = shift; |
| |
my $uri = &Apache::lonnet::clutter($ENV{'request.course.uri'}); |
| |
|
| |
my $firstres = $self->navhash("map_start_$uri"); |
| |
my $lastres = $self->navhash("map_finish_$uri"); |
| |
return $firstres && $lastres; |
| |
} |
| |
|
| |
sub getIterator { |
| |
my $self = shift; |
| |
my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift, |
| |
shift, undef, shift); |
| |
return $iterator; |
| |
} |
| |
|
| |
# unties the hash when done |
| |
sub untieHashes { |
| |
my $self = shift; |
| |
untie %{$self->{NAV_HASH}}; |
| |
untie %{$self->{PARM_HASH}}; |
| |
} |
| |
|
| |
# Private method: Does the given resource (as a symb string) have |
| |
# current discussion? Returns 0 if chat/mail data not extracted. |
| |
sub hasDiscussion { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
|
| |
$self->generate_email_discuss_status(); |
| |
|
| |
if (!defined($self->{DISCUSSION_TIME})) { return 0; } |
| |
|
| |
#return defined($self->{DISCUSSION_TIME}->{$symb}); |
| |
|
| |
# backward compatibility (bulletin boards used to be 'wrapped') |
| |
my $ressymb = $symb; |
| |
if ($ressymb =~ m|adm/(\w+)/(\w+)/(\d+)/bulletinboard$|) { |
| |
unless ($ressymb =~ m|adm/wrapper/adm|) { |
| |
$ressymb = 'bulletin___'.$3.'___adm/wrapper/adm/'.$1.'/'.$2.'/'.$3.'/bulletinboard'; |
| |
} |
| |
} |
| |
|
| |
if ( defined ( $self->{LAST_READ}->{$ressymb} ) ) { |
| |
return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_READ}->{$ressymb}; |
| |
} else { |
| |
# return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_CHECK}; # v.1.1 behavior |
| |
return $self->{DISCUSSION_TIME}->{$ressymb} > 0; # in 1.2 will display speech bubble icons for all items with posts until marked as read (even if read in v 1.1). |
| |
} |
| |
} |
| |
|
| |
# Private method: Does the given resource (as a symb string) have |
| |
# current feedback? Returns the string in the feedback hash, which |
| |
# will be false if it does not exist. |
| |
sub getFeedback { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
|
| |
$self->generate_email_discuss_status(); |
| |
|
| |
if (!defined($self->{FEEDBACK})) { return ""; } |
| |
|
| |
return $self->{FEEDBACK}->{$symb}; |
| |
} |
| |
|
| |
# Private method: Get the errors for that resource (by source). |
| |
sub getErrors { |
| |
my $self = shift; |
| |
my $src = shift; |
| |
|
| |
$self->generate_email_discuss_status(); |
| |
|
| |
if (!defined($self->{ERROR_MSG})) { return ""; } |
| |
return $self->{ERROR_MSG}->{$src}; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<getById>(id): |
| |
|
| |
Based on the ID of the resource (1.1, 3.2, etc.), get a resource |
| |
object for that resource. This method, or other methods that use it |
| |
(as in the resource object) is the only proper way to obtain a |
| |
resource object. |
| |
|
| |
=item * B<getBySymb>(symb): |
| |
|
| |
Based on the symb of the resource, get a resource object for that |
| |
resource. This is one of the proper ways to get a resource object. |
| |
|
| |
=item * B<getMapByMapPc>(map_pc): |
| |
|
| |
Based on the map_pc of the resource, get a resource object for |
| |
the given map. This is one of the proper ways to get a resource object. |
| |
|
| |
=cut |
| |
|
| |
# The strategy here is to cache the resource objects, and only construct them |
| |
# as we use them. The real point is to prevent reading any more from the tied |
| |
# hash then we have to, which should hopefully alleviate speed problems. |
| |
|
| |
sub getById { |
| |
my $self = shift; |
| |
my $id = shift; |
| |
|
| |
if (defined ($self->{RESOURCE_CACHE}->{$id})) |
| |
{ |
| |
return $self->{RESOURCE_CACHE}->{$id}; |
| |
} |
| |
|
| |
# resource handles inserting itself into cache. |
| |
# Not clear why the quotes are necessary, but as of this |
| |
# writing it doesn't work without them. |
| |
return "Apache::lonnavmaps::resource"->new($self, $id); |
| |
} |
| |
|
| |
sub getBySymb { |
| |
my $self = shift; |
| |
my $symb = shift; |
| |
|
| |
my ($mapUrl, $id, $filename) = &Apache::lonnet::decode_symb($symb); |
| |
my $map = $self->getResourceByUrl($mapUrl); |
| |
my $returnvalue = undef; |
| |
if (ref($map)) { |
| |
$returnvalue = $self->getById($map->map_pc() .'.'.$id); |
| |
} |
| |
return $returnvalue; |
| |
} |
| |
|
| |
sub getByMapPc { |
| |
my $self = shift; |
| |
my $map_pc = shift; |
| |
my $map_id = $self->{NAV_HASH}->{'map_id_' . $map_pc}; |
| |
$map_id = $self->{NAV_HASH}->{'ids_' . $map_id}; |
| |
return $self->getById($map_id); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<firstResource>(): |
| |
|
| |
Returns a resource object reference corresponding to the first |
| |
resource in the navmap. |
| |
|
| |
=cut |
| |
|
| |
sub firstResource { |
| |
my $self = shift; |
| |
my $firstResource = $self->navhash('map_start_' . |
| |
&Apache::lonnet::clutter($ENV{'request.course.uri'})); |
| |
return $self->getById($firstResource); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<finishResource>(): |
| |
|
| |
Returns a resource object reference corresponding to the last resource |
| |
in the navmap. |
| |
|
| |
=cut |
| |
|
| |
sub finishResource { |
| |
my $self = shift; |
| |
my $firstResource = $self->navhash('map_finish_' . |
| |
&Apache::lonnet::clutter($ENV{'request.course.uri'})); |
| |
return $self->getById($firstResource); |
| |
} |
| |
|
| |
# Parmval reads the parm hash and cascades the lookups. parmval_real does |
| |
# the actual lookup; parmval caches the results. |
| sub parmval { |
sub parmval { |
| |
my $self = shift; |
| my ($what,$symb)=@_; |
my ($what,$symb)=@_; |
| |
my $hashkey = $what."|||".$symb; |
| |
|
| |
if (defined($self->{PARM_CACHE}->{$hashkey})) { |
| |
return $self->{PARM_CACHE}->{$hashkey}; |
| |
} |
| |
|
| |
my $result = $self->parmval_real($what, $symb); |
| |
$self->{PARM_CACHE}->{$hashkey} = $result; |
| |
return $result; |
| |
} |
| |
|
| |
sub parmval_real { |
| |
my $self = shift; |
| |
my ($what,$symb,$recurse) = @_; |
| |
|
| |
# Make sure the {USER_OPT} and {COURSE_OPT} hashes are populated |
| |
$self->generate_course_user_opt(); |
| |
|
| my $cid=$ENV{'request.course.id'}; |
my $cid=$ENV{'request.course.id'}; |
| my $csec=$ENV{'request.course.sec'}; |
my $csec=$ENV{'request.course.sec'}; |
| my $uname=$ENV{'user.name'}; |
my $uname=$ENV{'user.name'}; |
|
Line 74 sub parmval {
|
Line 2420 sub parmval {
|
| unless ($symb) { return ''; } |
unless ($symb) { return ''; } |
| my $result=''; |
my $result=''; |
| |
|
| my ($mapname,$id,$fn)=split(/\_\_\_/,$symb); |
my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb); |
| |
|
| # ----------------------------------------------------- Cascading lookup scheme |
# ----------------------------------------------------- Cascading lookup scheme |
| my $rwhat=$what; |
my $rwhat=$what; |
| $what=~s/^parameter\_//; |
$what=~s/^parameter\_//; |
| $what=~s/\_/\./; |
$what=~s/\_/\./; |
| |
|
| my $symbparm=$symb.'.'.$what; |
my $symbparm=$symb.'.'.$what; |
| my $mapparm=$mapname.'___(all).'.$what; |
my $mapparm=$mapname.'___(all).'.$what; |
| my $usercourseprefix=$uname.'_'.$udom.'_'.$cid; |
my $usercourseprefix=$uname.'_'.$udom.'_'.$cid; |
| |
|
| my $seclevel= |
my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what; |
| $usercourseprefix.'.['. |
my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm; |
| $csec.'].'.$what; |
my $seclevelm=$usercourseprefix.'.['.$csec.'].'.$mapparm; |
| my $seclevelr= |
|
| $usercourseprefix.'.['. |
my $courselevel= $usercourseprefix.'.'.$what; |
| $csec.'].'.$symbparm; |
my $courselevelr=$usercourseprefix.'.'.$symbparm; |
| my $seclevelm= |
my $courselevelm=$usercourseprefix.'.'.$mapparm; |
| $usercourseprefix.'.['. |
|
| $csec.'].'.$mapparm; |
my $useropt = $self->{USER_OPT}; |
| |
my $courseopt = $self->{COURSE_OPT}; |
| my $courselevel= |
my $parmhash = $self->{PARM_HASH}; |
| $usercourseprefix.'.'.$what; |
|
| my $courselevelr= |
# ---------------------------------------------------------- first, check user |
| $usercourseprefix.'.'.$symbparm; |
if ($uname and defined($useropt)) { |
| my $courselevelm= |
if (defined($$useropt{$courselevelr})) { return $$useropt{$courselevelr}; } |
| $usercourseprefix.'.'.$mapparm; |
if (defined($$useropt{$courselevelm})) { return $$useropt{$courselevelm}; } |
| |
if (defined($$useropt{$courselevel})) { return $$useropt{$courselevel}; } |
| # ---------------------------------------------------------- fourth, check user |
} |
| |
|
| if ($uname) { |
|
| |
|
| if ($useropt{$courselevelr}) { return $useropt{$courselevelr}; } |
|
| |
|
| if ($useropt{$courselevelm}) { return $useropt{$courselevelm}; } |
# ------------------------------------------------------- second, check course |
| |
if ($csec and defined($courseopt)) { |
| |
if (defined($$courseopt{$seclevelr})) { return $$courseopt{$seclevelr}; } |
| |
if (defined($$courseopt{$seclevelm})) { return $$courseopt{$seclevelm}; } |
| |
if (defined($$courseopt{$seclevel})) { return $$courseopt{$seclevel}; } |
| |
} |
| |
|
| if ($useropt{$courselevel}) { return $useropt{$courselevel}; } |
if (defined($courseopt)) { |
| |
if (defined($$courseopt{$courselevelr})) { return $$courseopt{$courselevelr}; } |
| |
if (defined($$courseopt{$courselevelm})) { return $$courseopt{$courselevelm}; } |
| |
if (defined($$courseopt{$courselevel})) { return $$courseopt{$courselevel}; } |
| |
} |
| |
|
| } |
# ----------------------------------------------------- third, check map parms |
| |
|
| # --------------------------------------------------------- third, check course |
my $thisparm=$$parmhash{$symbparm}; |
| |
if (defined($thisparm)) { return $thisparm; } |
| if ($csec) { |
|
| |
|
| if ($courseopt{$seclevelr}) { return $courseopt{$seclevelr}; } |
|
| |
|
| if ($courseopt{$seclevelm}) { return $courseopt{$seclevelm}; } |
# ----------------------------------------------------- fourth , check default |
| |
|
| if ($courseopt{$seclevel}) { return $courseopt{$seclevel}; } |
my $meta_rwhat=$rwhat; |
| |
$meta_rwhat=~s/\./_/g; |
| } |
my $default=&Apache::lonnet::metadata($fn,$meta_rwhat); |
| |
if (defined($default)) { return $default} |
| |
$default=&Apache::lonnet::metadata($fn,'parameter_'.$meta_rwhat); |
| |
if (defined($default)) { return $default} |
| |
|
| |
# --------------------------------------------------- fifth , cascade up parts |
| |
|
| |
my ($space,@qualifier)=split(/\./,$rwhat); |
| |
my $qualifier=join('.',@qualifier); |
| |
unless ($space eq '0') { |
| |
my @parts=split(/_/,$space); |
| |
my $id=pop(@parts); |
| |
my $part=join('_',@parts); |
| |
if ($part eq '') { $part='0'; } |
| |
my $partgeneral=$self->parmval($part.".$qualifier",$symb,1); |
| |
if (defined($partgeneral)) { return $partgeneral; } |
| |
} |
| |
if ($recurse) { return undef; } |
| |
my $pack_def=&Apache::lonnet::packages_tab_default($fn,'resource.'.$what); |
| |
if (defined($pack_def)) { return $pack_def; } |
| |
return ''; |
| |
} |
| |
|
| if ($courseopt{$courselevelr}) { return $courseopt{$courselevelr}; } |
=pod |
| |
|
| if ($courseopt{$courselevelm}) { return $courseopt{$courselevelm}; } |
=item * B<getResourceByUrl>(url): |
| |
|
| if ($courseopt{$courselevel}) { return $courseopt{$courselevel}; } |
Retrieves a resource object by URL of the resource. If passed a |
| |
resource object, it will simply return it, so it is safe to use this |
| |
method in code like "$res = $navmap->getResourceByUrl($res)", if |
| |
you're not sure if $res is already an object, or just a URL. If the |
| |
resource appears multiple times in the course, only the first instance |
| |
will be returned. As a result, this is probably useful only for maps. |
| |
|
| |
=item * B<retrieveResources>(map, filterFunc, recursive, bailout): |
| |
|
| |
The map is a specification of a map to retreive the resources from, |
| |
either as a url or as an object. The filterFunc is a reference to a |
| |
function that takes a resource object as its one argument and returns |
| |
true if the resource should be included, or false if it should not |
| |
be. If recursive is true, the map will be recursively examined, |
| |
otherwise it will not be. If bailout is true, the function will return |
| |
as soon as it finds a resource, if false it will finish. By default, |
| |
the map is the top-level map of the course, filterFunc is a function |
| |
that always returns 1, recursive is true, bailout is false. The |
| |
resources will be returned in a list containing the resource objects |
| |
for the corresponding resources, with B<no structure information> in |
| |
the list; regardless of branching, recursion, etc., it will be a flat |
| |
list. |
| |
|
| |
Thus, this is suitable for cases where you don't want the structure, |
| |
just a list of all resources. It is also suitable for finding out how |
| |
many resources match a given description; for this use, if all you |
| |
want to know is if I<any> resources match the description, the bailout |
| |
parameter will allow you to avoid potentially expensive enumeration of |
| |
all matching resources. |
| |
|
| |
=item * B<hasResource>(map, filterFunc, recursive): |
| |
|
| |
Convience method for |
| |
|
| |
scalar(retrieveResources($map, $filterFunc, $recursive, 1)) > 0 |
| |
|
| |
which will tell whether the map has resources matching the description |
| |
in the filter function. |
| |
|
| |
=cut |
| |
|
| |
|
| |
sub getResourceByUrl { |
| |
my $self = shift; |
| |
my $resUrl = shift; |
| |
|
| |
if (ref($resUrl)) { return $resUrl; } |
| |
|
| |
$resUrl = &Apache::lonnet::clutter($resUrl); |
| |
my $resId = $self->{NAV_HASH}->{'ids_' . $resUrl}; |
| |
if ($resId =~ /,/) { |
| |
$resId = (split (/,/, $resId))[0]; |
| |
} |
| |
if (!$resId) { return ''; } |
| |
return $self->getById($resId); |
| |
} |
| |
|
| # ----------------------------------------------------- second, check map parms |
sub retrieveResources { |
| |
my $self = shift; |
| |
my $map = shift; |
| |
my $filterFunc = shift; |
| |
if (!defined ($filterFunc)) { |
| |
$filterFunc = sub {return 1;}; |
| |
} |
| |
my $recursive = shift; |
| |
if (!defined($recursive)) { $recursive = 1; } |
| |
my $bailout = shift; |
| |
if (!defined($bailout)) { $bailout = 0; } |
| |
|
| |
# Create the necessary iterator. |
| |
if (!ref($map)) { # assume it's a url of a map. |
| |
$map = $self->getResourceByUrl($map); |
| |
} |
| |
|
| my $thisparm=$parmhash{$symbparm}; |
# If nothing was passed, assume top-level map |
| if ($thisparm) { return $thisparm; } |
if (!$map) { |
| |
$map = $self->getById('0.0'); |
| |
} |
| |
|
| # -------------------------------------------------------- first, check default |
# Check the map's validity. |
| |
if (!$map->is_map()) { |
| |
# Oh, to throw an exception.... how I'd love that! |
| |
return (); |
| |
} |
| |
|
| return &Apache::lonnet::metadata($fn,$rwhat.'.default'); |
# Get an iterator. |
| |
my $it = $self->getIterator($map->map_start(), $map->map_finish(), |
| |
undef, $recursive); |
| |
|
| |
my @resources = (); |
| |
|
| |
# Run down the iterator and collect the resources. |
| |
my $curRes; |
| |
|
| |
while ($curRes = $it->next()) { |
| |
if (ref($curRes)) { |
| |
if (!&$filterFunc($curRes)) { |
| |
next; |
| |
} |
| |
|
| |
push @resources, $curRes; |
| |
|
| |
if ($bailout) { |
| |
return @resources; |
| |
} |
| |
} |
| |
|
| |
} |
| |
|
| |
return @resources; |
| |
} |
| |
|
| |
sub hasResource { |
| |
my $self = shift; |
| |
my $map = shift; |
| |
my $filterFunc = shift; |
| |
my $recursive = shift; |
| |
|
| |
return scalar($self->retrieveResources($map, $filterFunc, $recursive, 1)) > 0; |
| |
} |
| |
|
| |
1; |
| |
|
| |
package Apache::lonnavmaps::iterator; |
| |
|
| |
=pod |
| |
|
| |
=back |
| |
|
| |
=head1 Object: navmap Iterator |
| |
|
| |
An I<iterator> encapsulates the logic required to traverse a data |
| |
structure. navmap uses an iterator to traverse the course map |
| |
according to the criteria you wish to use. |
| |
|
| |
To obtain an iterator, call the B<getIterator>() function of a |
| |
B<navmap> object. (Do not instantiate Apache::lonnavmaps::iterator |
| |
directly.) This will return a reference to the iterator: |
| |
|
| |
C<my $resourceIterator = $navmap-E<gt>getIterator();> |
| |
|
| |
To get the next thing from the iterator, call B<next>: |
| |
|
| |
C<my $nextThing = $resourceIterator-E<gt>next()> |
| |
|
| |
getIterator behaves as follows: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getIterator>(firstResource, finishResource, filterHash, condition, forceTop, returnTopMap): |
| |
|
| |
All parameters are optional. firstResource is a resource reference |
| |
corresponding to where the iterator should start. It defaults to |
| |
navmap->firstResource() for the corresponding nav map. finishResource |
| |
corresponds to where you want the iterator to end, defaulting to |
| |
navmap->finishResource(). filterHash is a hash used as a set |
| |
containing strings representing the resource IDs, defaulting to |
| |
empty. Condition is a 1 or 0 that sets what to do with the filter |
| |
hash: If a 0, then only resources that exist IN the filterHash will be |
| |
recursed on. If it is a 1, only resources NOT in the filterHash will |
| |
be recursed on. Defaults to 0. forceTop is a boolean value. If it is |
| |
false (default), the iterator will only return the first level of map |
| |
that is not just a single, 'redirecting' map. If true, the iterator |
| |
will return all information, starting with the top-level map, |
| |
regardless of content. returnTopMap, if true (default false), will |
| |
cause the iterator to return the top-level map object (resource 0.0) |
| |
before anything else. |
| |
|
| |
Thus, by default, only top-level resources will be shown. Change the |
| |
condition to a 1 without changing the hash, and all resources will be |
| |
shown. Changing the condition to 1 and including some values in the |
| |
hash will allow you to selectively suppress parts of the navmap, while |
| |
leaving it on 0 and adding things to the hash will allow you to |
| |
selectively add parts of the nav map. See the handler code for |
| |
examples. |
| |
|
| |
The iterator will return either a reference to a resource object, or a |
| |
token representing something in the map, such as the beginning of a |
| |
new branch. The possible tokens are: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<END_ITERATOR>: |
| |
|
| |
The iterator has returned all that it's going to. Further calls to the |
| |
iterator will just produce more of these. This is a "false" value, and |
| |
is the only false value the iterator which will be returned, so it can |
| |
be used as a loop sentinel. |
| |
|
| |
=item * B<BEGIN_MAP>: |
| |
|
| |
A new map is being recursed into. This is returned I<after> the map |
| |
resource itself is returned. |
| |
|
| |
=item * B<END_MAP>: |
| |
|
| |
The map is now done. |
| |
|
| |
=item * B<BEGIN_BRANCH>: |
| |
|
| |
A branch is now starting. The next resource returned will be the first |
| |
in that branch. |
| |
|
| |
=item * B<END_BRANCH>: |
| |
|
| |
The branch is now done. |
| |
|
| |
=back |
| |
|
| |
The tokens are retreivable via methods on the iterator object, i.e., |
| |
$iterator->END_MAP. |
| |
|
| |
Maps can contain empty resources. The iterator will automatically skip |
| |
over such resources, but will still treat the structure |
| |
correctly. Thus, a complicated map with several branches, but |
| |
consisting entirely of empty resources except for one beginning or |
| |
ending resource, will cause a lot of BRANCH_STARTs and BRANCH_ENDs, |
| |
but only one resource will be returned. |
| |
|
| |
=back |
| |
|
| |
=head2 Normal Usage |
| |
|
| |
Normal usage of the iterator object is to do the following: |
| |
|
| |
my $it = $navmap->getIterator([your params here]); |
| |
my $curRes; |
| |
while ($curRes = $it->next()) { |
| |
[your logic here] |
| |
} |
| |
|
| |
Note that inside of the loop, it's frequently useful to check if |
| |
"$curRes" is a reference or not with the reference function; only |
| |
resource objects will be references, and any non-references will |
| |
be the tokens described above. |
| |
|
| |
Also note there is some old code floating around that trys to track |
| |
the depth of the iterator to see when it's done; do not copy that |
| |
code. It is difficult to get right and harder to understand then |
| |
this. They should be migrated to this new style. |
| |
|
| |
=cut |
| |
|
| |
# Here are the tokens for the iterator: |
| |
|
| |
sub END_ITERATOR { return 0; } |
| |
sub BEGIN_MAP { return 1; } # begining of a new map |
| |
sub END_MAP { return 2; } # end of the map |
| |
sub BEGIN_BRANCH { return 3; } # beginning of a branch |
| |
sub END_BRANCH { return 4; } # end of a branch |
| |
sub FORWARD { return 1; } # go forward |
| |
sub BACKWARD { return 2; } |
| |
|
| |
sub min { |
| |
(my $a, my $b) = @_; |
| |
if ($a < $b) { return $a; } else { return $b; } |
| } |
} |
| |
|
| |
sub new { |
| |
# magic invocation to create a class instance |
| |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
$self->{NAV_MAP} = shift; |
| |
return undef unless ($self->{NAV_MAP}); |
| |
|
| |
# Handle the parameters |
| |
$self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource(); |
| |
$self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource(); |
| |
|
| |
# If the given resources are just the ID of the resource, get the |
| |
# objects |
| |
if (!ref($self->{FIRST_RESOURCE})) { $self->{FIRST_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FIRST_RESOURCE}); } |
| |
if (!ref($self->{FINISH_RESOURCE})) { $self->{FINISH_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FINISH_RESOURCE}); } |
| |
|
| |
$self->{FILTER} = shift; |
| |
|
| |
# A hash, used as a set, of resource already seen |
| |
$self->{ALREADY_SEEN} = shift; |
| |
if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} }; |
| |
$self->{CONDITION} = shift; |
| |
|
| |
# Do we want to automatically follow "redirection" maps? |
| |
$self->{FORCE_TOP} = shift; |
| |
|
| |
# Do we want to return the top-level map object (resource 0.0)? |
| |
$self->{RETURN_0} = shift; |
| |
# have we done that yet? |
| |
$self->{HAVE_RETURNED_0} = 0; |
| |
|
| |
# Now, we need to pre-process the map, by walking forward and backward |
| |
# over the parts of the map we're going to look at. |
| |
|
| |
# The processing steps are exactly the same, except for a few small |
| |
# changes, so I bundle those up in the following list of two elements: |
| |
# (direction_to_iterate, VAL_name, next_resource_method_to_call, |
| |
# first_resource). |
| |
# This prevents writing nearly-identical code twice. |
| |
my @iterations = ( [FORWARD(), 'TOP_DOWN_VAL', 'getNext', |
| |
'FIRST_RESOURCE'], |
| |
[BACKWARD(), 'BOT_UP_VAL', 'getPrevious', |
| |
'FINISH_RESOURCE'] ); |
| |
|
| |
my $maxDepth = 0; # tracks max depth |
| |
|
| |
# If there is only one resource in this map, and it's a map, we |
| |
# want to remember that, so the user can ask for the first map |
| |
# that isn't just a redirector. |
| |
my $resource; my $resourceCount = 0; |
| |
|
| |
# Documentation on this algorithm can be found in the CVS repository at |
| |
# /docs/lonnavdocs; these "**#**" markers correspond to documentation |
| |
# in that file. |
| |
# **1** |
| |
|
| |
foreach my $pass (@iterations) { |
| |
my $direction = $pass->[0]; |
| |
my $valName = $pass->[1]; |
| |
my $nextResourceMethod = $pass->[2]; |
| |
my $firstResourceName = $pass->[3]; |
| |
|
| |
my $iterator = Apache::lonnavmaps::DFSiterator->new($self->{NAV_MAP}, |
| |
$self->{FIRST_RESOURCE}, |
| |
$self->{FINISH_RESOURCE}, |
| |
{}, undef, 0, $direction); |
| |
|
| |
# prime the recursion |
| |
$self->{$firstResourceName}->{DATA}->{$valName} = 0; |
| |
$iterator->next(); |
| |
my $curRes = $iterator->next(); |
| |
my $depth = 1; |
| |
while ($depth > 0) { |
| |
if ($curRes == $iterator->BEGIN_MAP()) { $depth++; } |
| |
if ($curRes == $iterator->END_MAP()) { $depth--; } |
| |
|
| |
if (ref($curRes)) { |
| |
# If there's only one resource, this will save it |
| |
# we have to filter empty resources from consideration here, |
| |
# or even "empty", redirecting maps have two (start & finish) |
| |
# or three (start, finish, plus redirector) |
| |
if($direction == FORWARD && $curRes->src()) { |
| |
$resource = $curRes; $resourceCount++; |
| |
} |
| |
my $resultingVal = $curRes->{DATA}->{$valName}; |
| |
my $nextResources = $curRes->$nextResourceMethod(); |
| |
my $nextCount = scalar(@{$nextResources}); |
| |
|
| |
if ($nextCount == 1) { # **3** |
| |
my $current = $nextResources->[0]->{DATA}->{$valName} || 999999999; |
| |
$nextResources->[0]->{DATA}->{$valName} = min($resultingVal, $current); |
| |
} |
| |
|
| |
if ($nextCount > 1) { # **4** |
| |
foreach my $res (@{$nextResources}) { |
| |
my $current = $res->{DATA}->{$valName} || 999999999; |
| |
$res->{DATA}->{$valName} = min($current, $resultingVal + 1); |
| |
} |
| |
} |
| |
} |
| |
|
| |
# Assign the final val (**2**) |
| |
if (ref($curRes) && $direction == BACKWARD()) { |
| |
my $finalDepth = min($curRes->{DATA}->{TOP_DOWN_VAL}, |
| |
$curRes->{DATA}->{BOT_UP_VAL}); |
| |
|
| |
$curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth; |
| |
if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;} |
| |
} |
| |
|
| |
$curRes = $iterator->next(); |
| |
} |
| |
} |
| |
|
| |
# Check: Was this only one resource, a map? |
| |
if ($resourceCount == 1 && $resource->is_sequence() && !$self->{FORCE_TOP}) { |
| |
my $firstResource = $resource->map_start(); |
| |
my $finishResource = $resource->map_finish(); |
| |
return |
| |
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource, |
| |
$finishResource, $self->{FILTER}, |
| |
$self->{ALREADY_SEEN}, |
| |
$self->{CONDITION}, 0); |
| |
|
| |
} |
| |
|
| |
# Set up some bookkeeping information. |
| |
$self->{CURRENT_DEPTH} = 0; |
| |
$self->{MAX_DEPTH} = $maxDepth; |
| |
$self->{STACK} = []; |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
$self->{FINISHED} = 0; # When true, the iterator has finished |
| |
|
| |
for (my $i = 0; $i <= $self->{MAX_DEPTH}; $i++) { |
| |
push @{$self->{STACK}}, []; |
| |
} |
| |
|
| # ------------------------------------------------------------- Find out status |
# Prime the recursion w/ the first resource **5** |
| |
push @{$self->{STACK}->[0]}, $self->{FIRST_RESOURCE}; |
| |
$self->{ALREADY_SEEN}->{$self->{FIRST_RESOURCE}->{ID}} = 1; |
| |
|
| sub astatus { |
bless ($self); |
| my $rid=shift; |
|
| my $code=1; |
|
| my $ctext=''; |
|
| $rid=~/(\d+)\.(\d+)/; |
|
| my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'. |
|
| &Apache::lonnet::declutter($hash{'src_'.$rid}); |
|
| |
|
| my %duedate=(); |
return $self; |
| my %opendate=(); |
} |
| my %answerdate=(); |
|
| map { |
sub next { |
| if ($_=~/^parameter\_(.*)\_opendate$/) { |
my $self = shift; |
| my $part=$1; |
my $closeAllPages=shift; |
| $duedate{$part}=&parmval($part.'.duedate',$symb); |
if ($self->{FINISHED}) { |
| $opendate{$part}=&parmval($part.'.opendate',$symb); |
return END_ITERATOR(); |
| $answerdate{$part}=&parmval($part.'.answerdate',$symb); |
} |
| |
|
| |
# If we want to return the top-level map object, and haven't yet, |
| |
# do so. |
| |
if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0}) { |
| |
$self->{HAVE_RETURNED_0} = 1; |
| |
return $self->{NAV_MAP}->getById('0.0'); |
| |
} |
| |
|
| |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
# grab the next from the recursive iterator |
| |
my $next = $self->{RECURSIVE_ITERATOR}->next($closeAllPages); |
| |
|
| |
# is it a begin or end map? If so, update the depth |
| |
if ($next == BEGIN_MAP() ) { $self->{RECURSIVE_DEPTH}++; } |
| |
if ($next == END_MAP() ) { $self->{RECURSIVE_DEPTH}--; } |
| |
|
| |
# Are we back at depth 0? If so, stop recursing |
| |
if ($self->{RECURSIVE_DEPTH} == 0) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| } |
} |
| } sort split(/\,/,&Apache::lonnet::metadata($hash{'src_'.$rid},'keys')); |
|
| |
|
| my $now=time; |
return $next; |
| my $tcode=0; |
} |
| |
|
| my %returnhash=&Apache::lonnet::restore($symb); |
if (defined($self->{FORCE_NEXT})) { |
| |
my $tmp = $self->{FORCE_NEXT}; |
| |
$self->{FORCE_NEXT} = undef; |
| |
return $tmp; |
| |
} |
| |
|
| map { |
# Have we not yet begun? If not, return BEGIN_MAP and |
| |
# remember we've started. |
| |
if ( !$self->{STARTED} ) { |
| |
$self->{STARTED} = 1; |
| |
return $self->BEGIN_MAP(); |
| |
} |
| |
|
| my $duedate=$duedate{$_}; |
# Here's the guts of the iterator. |
| my $opendate=$opendate{$_}; |
|
| my $answerdate=$answerdate{$_}; |
# Find the next resource, if any. |
| my $preface=''; |
my $found = 0; |
| unless ($_ eq '0') { $preface=' Part: '.$_.' '; } |
my $i = $self->{MAX_DEPTH}; |
| if ($opendate) { |
my $newDepth; |
| if ($now<$duedate) { |
my $here; |
| unless ($tcode==4) { $tcode=2; } |
while ( $i >= 0 && !$found ) { |
| $ctext.=$preface.'Due: '.localtime($duedate); |
if ( scalar(@{$self->{STACK}->[$i]}) > 0 ) { # **6** |
| if ($now<$opendate) { |
$here = pop @{$self->{STACK}->[$i]}; # **7** |
| unless ($tcode) { $tcode=1; } |
$found = 1; |
| $ctext.=$preface.'Open: '.localtime($opendate); |
$newDepth = $i; |
| } |
} |
| if ($duedate-$now<86400) { |
$i--; |
| $tcode=4; |
} |
| $ctext.=$preface.'Due: '.localtime($duedate); |
|
| |
# If we still didn't find anything, we're done. |
| |
if ( !$found ) { |
| |
# We need to get back down to the correct branch depth |
| |
if ( $self->{CURRENT_DEPTH} > 0 ) { |
| |
$self->{CURRENT_DEPTH}--; |
| |
return END_BRANCH(); |
| |
} else { |
| |
$self->{FINISHED} = 1; |
| |
return END_MAP(); |
| } |
} |
| } else { |
|
| unless (($tcode==4) || ($tcode eq 2)) { $tcode=3; } |
|
| if ($now<$answerdate) { |
|
| $ctext.='Answer: '.localtime($duedate); |
|
| } |
|
| } |
} |
| } else { |
|
| unless (($tcode==2) || ($tcode==4)) { $tcode=1; } |
|
| } |
|
| |
|
| my $status=$returnhash{'resource.'.$_.'.solved'}; |
# If this is not a resource, it must be an END_BRANCH marker we want |
| |
# to return directly. |
| |
if (!ref($here)) { # **8** |
| |
if ($here == END_BRANCH()) { # paranoia, in case of later extension |
| |
$self->{CURRENT_DEPTH}--; |
| |
return $here; |
| |
} |
| |
} |
| |
|
| |
# Otherwise, it is a resource and it's safe to store in $self->{HERE} |
| |
$self->{HERE} = $here; |
| |
|
| |
# Get to the right level |
| |
if ( $self->{CURRENT_DEPTH} > $newDepth ) { |
| |
push @{$self->{STACK}->[$newDepth]}, $here; |
| |
$self->{CURRENT_DEPTH}--; |
| |
return END_BRANCH(); |
| |
} |
| |
if ( $self->{CURRENT_DEPTH} < $newDepth) { |
| |
push @{$self->{STACK}->[$newDepth]}, $here; |
| |
$self->{CURRENT_DEPTH}++; |
| |
return BEGIN_BRANCH(); |
| |
} |
| |
|
| |
# If we made it here, we have the next resource, and we're at the |
| |
# right branch level. So let's examine the resource for where |
| |
# we can get to from here. |
| |
|
| |
# So we need to look at all the resources we can get to from here, |
| |
# categorize them if we haven't seen them, remember if we have a new |
| |
my $nextUnfiltered = $here->getNext(); |
| |
my $maxDepthAdded = -1; |
| |
|
| |
for (@$nextUnfiltered) { |
| |
if (!defined($self->{ALREADY_SEEN}->{$_->{ID}})) { |
| |
my $depth = $_->{DATA}->{DISPLAY_DEPTH}; |
| |
push @{$self->{STACK}->[$depth]}, $_; |
| |
$self->{ALREADY_SEEN}->{$_->{ID}} = 1; |
| |
if ($maxDepthAdded < $depth) { $maxDepthAdded = $depth; } |
| |
} |
| |
} |
| |
|
| |
# Is this the end of a branch? If so, all of the resources examined above |
| |
# led to lower levels then the one we are currently at, so we push a END_BRANCH |
| |
# marker onto the stack so we don't forget. |
| |
# Example: For the usual A(BC)(DE)F case, when the iterator goes down the |
| |
# BC branch and gets to C, it will see F as the only next resource, but it's |
| |
# one level lower. Thus, this is the end of the branch, since there are no |
| |
# more resources added to this level or above. |
| |
# We don't do this if the examined resource is the finish resource, |
| |
# because the condition given above is true, but the "END_MAP" will |
| |
# take care of things and we should already be at depth 0. |
| |
my $isEndOfBranch = $maxDepthAdded < $self->{CURRENT_DEPTH}; |
| |
if ($isEndOfBranch && $here != $self->{FINISH_RESOURCE}) { # **9** |
| |
push @{$self->{STACK}->[$self->{CURRENT_DEPTH}]}, END_BRANCH(); |
| |
} |
| |
|
| |
# That ends the main iterator logic. Now, do we want to recurse |
| |
# down this map (if this resource is a map)? |
| |
if ( ($self->{HERE}->is_sequence() || (!$closeAllPages && $self->{HERE}->is_page())) && |
| |
(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 1; |
| |
my $firstResource = $self->{HERE}->map_start(); |
| |
my $finishResource = $self->{HERE}->map_finish(); |
| |
|
| |
$self->{RECURSIVE_ITERATOR} = |
| |
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource, |
| |
$finishResource, $self->{FILTER}, |
| |
$self->{ALREADY_SEEN}, $self->{CONDITION}); |
| |
} |
| |
|
| |
# If this is a blank resource, don't actually return it. |
| |
# Should you ever find you need it, make sure to add an option to the code |
| |
# that you can use; other things depend on this behavior. |
| |
my $browsePriv = $self->{HERE}->browsePriv(); |
| |
if (!$self->{HERE}->src() || |
| |
(!($browsePriv eq 'F') && !($browsePriv eq '2')) ) { |
| |
return $self->next($closeAllPages); |
| |
} |
| |
|
| |
return $self->{HERE}; |
| |
|
| |
} |
| |
|
| |
=pod |
| |
|
| |
The other method available on the iterator is B<getStack>, which |
| |
returns an array populated with the current 'stack' of maps, as |
| |
references to the resource objects. Example: This is useful when |
| |
making the navigation map, as we need to check whether we are under a |
| |
page map to see if we need to link directly to the resource, or to the |
| |
page. The first elements in the array will correspond to the top of |
| |
the stack (most inclusive map). |
| |
|
| |
=cut |
| |
|
| |
sub getStack { |
| |
my $self=shift; |
| |
|
| |
my @stack; |
| |
|
| |
$self->populateStack(\@stack); |
| |
|
| |
return \@stack; |
| |
} |
| |
|
| |
# Private method: Calls the iterators recursively to populate the stack. |
| |
sub populateStack { |
| |
my $self=shift; |
| |
my $stack = shift; |
| |
|
| if ($status eq 'correct_by_student') { |
push @$stack, $self->{HERE} if ($self->{HERE}); |
| unless ($code==2) { $code=3; } |
|
| $ctext.=' solved'; |
|
| } elsif ($status eq 'correct_by_override') { |
|
| unless ($code==2) { $code=3; } |
|
| $ctext.=' override'; |
|
| } elsif ($status eq 'incorrect_attempted') { |
|
| $code=2; |
|
| $ctext.=' ('. |
|
| ($returnhash{'resource.'.$_.'.tries'}? |
|
| $returnhash{'resource.'.$_.'.tries'}:'0').'/'. |
|
| &parmval($_.'.maxtries',$symb).' tries)'; |
|
| } elsif ($status eq 'incorrect_by_override') { |
|
| $code=2; |
|
| $ctext.=' override'; |
|
| } elsif ($status eq 'excused') { |
|
| unless ($code==2) { $code=3; } |
|
| $ctext.=' excused'; |
|
| } |
|
| |
|
| } sort keys %opendate; |
|
| |
|
| return 'p'.$code.$tcode.'"'.$ctext.'"'; |
|
| } |
|
| |
|
| # ------------------------------------------------------------ Build page table |
|
| |
|
| sub tracetable { |
|
| my ($sofar,$rid,$beenhere)=@_; |
|
| my $further=$sofar; |
|
| unless ($beenhere=~/\&$rid\&/) { |
|
| $beenhere.=$rid.'&'; |
|
| |
|
| if (defined($hash{'is_map_'.$rid})) { |
|
| $sofar++; |
|
| my $tprefix=''; |
|
| if ($hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}} |
|
| eq 'sequence') { |
|
| $tprefix='h'; |
|
| } |
|
| if (defined($rows[$sofar])) { |
|
| $rows[$sofar].='&'.$tprefix.$rid; |
|
| } else { |
|
| $rows[$sofar]=$tprefix.$rid; |
|
| } |
|
| if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && |
|
| (defined($hash{'map_finish_'.$hash{'src_'.$rid}})) && |
|
| ($tprefix eq 'h')) { |
|
| my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; |
|
| $sofar= |
|
| &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, |
|
| '&'.$frid.'&'); |
|
| $sofar++; |
|
| if ($hash{'src_'.$frid}) { |
|
| my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid}); |
|
| if (($brepriv eq '2') || ($brepriv eq 'F')) { |
|
| my $pprefix=''; |
|
| if ($hash{'src_'.$frid}=~ |
|
| /\.(problem|exam|quiz|assess|survey|form)$/) { |
|
| $pprefix=&astatus($frid); |
|
| |
|
| } |
|
| if (defined($rows[$sofar])) { |
|
| $rows[$sofar].='&'.$pprefix.$frid; |
|
| } else { |
|
| $rows[$sofar]=$pprefix.$frid; |
|
| } |
|
| } |
|
| } |
|
| } |
|
| } else { |
|
| $sofar++; |
|
| if ($hash{'src_'.$rid}) { |
|
| my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid}); |
|
| if (($brepriv eq '2') || ($brepriv eq 'F')) { |
|
| my $pprefix=''; |
|
| if ($hash{'src_'.$rid}=~ |
|
| /\.(problem|exam|quiz|assess|survey|form)$/) { |
|
| $pprefix=&astatus($rid); |
|
| } |
|
| if (defined($rows[$sofar])) { |
|
| $rows[$sofar].='&'.$pprefix.$rid; |
|
| } else { |
|
| $rows[$sofar]=$pprefix.$rid; |
|
| } |
|
| } |
|
| } |
|
| } |
|
| |
|
| if (defined($hash{'to_'.$rid})) { |
|
| my $mincond=1; |
|
| my $next=''; |
|
| map { |
|
| my $thiscond= |
|
| &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); |
|
| if ($thiscond>=$mincond) { |
|
| if ($next) { |
|
| $next.=','.$_.':'.$thiscond; |
|
| } else { |
|
| $next=$_.':'.$thiscond; |
|
| } |
|
| if ($thiscond>$mincond) { $mincond=$thiscond; } |
|
| } |
|
| } split(/\,/,$hash{'to_'.$rid}); |
|
| map { |
|
| my ($linkid,$condval)=split(/\:/,$_); |
|
| if ($condval>=$mincond) { |
|
| my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere); |
|
| if ($now>$further) { $further=$now; } |
|
| } |
|
| } split(/\,/,$next); |
|
| |
|
| } |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
$self->{RECURSIVE_ITERATOR}->populateStack($stack); |
| } |
} |
| return $further; |
|
| } |
} |
| |
|
| # ================================================================ Main Handler |
1; |
| |
|
| sub handler { |
package Apache::lonnavmaps::DFSiterator; |
| my $r=shift; |
|
| |
|
| |
# Not documented in the perldoc: This is a simple iterator that just walks |
| |
# through the nav map and presents the resources in a depth-first search |
| |
# fashion, ignorant of conditionals, randomized resources, etc. It presents |
| |
# BEGIN_MAP and END_MAP, but does not understand branches at all. It is |
| |
# useful for pre-processing of some kind, and is in fact used by the main |
| |
# iterator that way, but that's about it. |
| |
# One could imagine merging this into the init routine of the main iterator, |
| |
# but this might as well be left separate, since it is possible some other |
| |
# use might be found for it. - Jeremy |
| |
|
| |
# Unlike the main iterator, this DOES return all resources, even blank ones. |
| |
# The main iterator needs them to correctly preprocess the map. |
| |
|
| |
sub BEGIN_MAP { return 1; } # begining of a new map |
| |
sub END_MAP { return 2; } # end of the map |
| |
sub FORWARD { return 1; } # go forward |
| |
sub BACKWARD { return 2; } |
| |
|
| |
# Params: Nav map ref, first resource id/ref, finish resource id/ref, |
| |
# filter hash ref (or undef), already seen hash or undef, condition |
| |
# (as in main iterator), direction FORWARD or BACKWARD (undef->forward). |
| |
sub new { |
| |
# magic invocation to create a class instance |
| |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
$self->{NAV_MAP} = shift; |
| |
return undef unless ($self->{NAV_MAP}); |
| |
|
| |
$self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource(); |
| |
$self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource(); |
| |
|
| |
# If the given resources are just the ID of the resource, get the |
| |
# objects |
| |
if (!ref($self->{FIRST_RESOURCE})) { $self->{FIRST_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FIRST_RESOURCE}); } |
| |
if (!ref($self->{FINISH_RESOURCE})) { $self->{FINISH_RESOURCE} = |
| |
$self->{NAV_MAP}->getById($self->{FINISH_RESOURCE}); } |
| |
|
| |
$self->{FILTER} = shift; |
| |
|
| |
# A hash, used as a set, of resource already seen |
| |
$self->{ALREADY_SEEN} = shift; |
| |
if (!defined($self->{ALREADY_SEEN})) { $self->{ALREADY_SEEN} = {} }; |
| |
$self->{CONDITION} = shift; |
| |
$self->{DIRECTION} = shift || FORWARD(); |
| |
|
| |
# Flag: Have we started yet? |
| |
$self->{STARTED} = 0; |
| |
|
| |
# Should we continue calling the recursive iterator, if any? |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
# The recursive iterator, if any |
| |
$self->{RECURSIVE_ITERATOR} = undef; |
| |
# Are we recursing on a map, or a branch? |
| |
$self->{RECURSIVE_MAP} = 1; # we'll manually unset this when recursing on branches |
| |
# And the count of how deep it is, so that this iterator can keep track of |
| |
# when to pick back up again. |
| |
$self->{RECURSIVE_DEPTH} = 0; |
| |
|
| |
# For keeping track of our branches, we maintain our own stack |
| |
$self->{STACK} = []; |
| |
|
| |
# Start with the first resource |
| |
if ($self->{DIRECTION} == FORWARD) { |
| |
push @{$self->{STACK}}, $self->{FIRST_RESOURCE}; |
| |
} else { |
| |
push @{$self->{STACK}}, $self->{FINISH_RESOURCE}; |
| |
} |
| |
|
| # ------------------------------------------- Set document type for header only |
bless($self); |
| |
return $self; |
| |
} |
| |
|
| if ($r->header_only) { |
sub next { |
| if ($ENV{'browser.mathml'}) { |
my $self = shift; |
| $r->content_type('text/xml'); |
|
| } else { |
# Are we using a recursive iterator? If so, pull from that and |
| $r->content_type('text/html'); |
# watch the depth; we want to resume our level at the correct time. |
| } |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| $r->send_http_header; |
# grab the next from the recursive iterator |
| return OK; |
my $next = $self->{RECURSIVE_ITERATOR}->next(); |
| } |
|
| |
# is it a begin or end map? Update depth if so |
| |
if ($next == BEGIN_MAP() ) { $self->{RECURSIVE_DEPTH}++; } |
| |
if ($next == END_MAP() ) { $self->{RECURSIVE_DEPTH}--; } |
| |
|
| |
# Are we back at depth 0? If so, stop recursing. |
| |
if ($self->{RECURSIVE_DEPTH} == 0) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 0; |
| |
} |
| |
|
| |
return $next; |
| |
} |
| |
|
| my $requrl=$r->uri; |
# Is there a current resource to grab? If not, then return |
| # ----------------------------------------------------------------- Tie db file |
# END_MAP, which will end the iterator. |
| if ($ENV{'request.course.fn'}) { |
if (scalar(@{$self->{STACK}}) == 0) { |
| my $fn=$ENV{'request.course.fn'}; |
return $self->END_MAP(); |
| if (-e "$fn.db") { |
} |
| if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) && |
|
| (tie(%parmhash,'GDBM_File', |
|
| $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640))) { |
|
| # ------------------------------------------------------------------- Hash tied |
|
| my $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}}; |
|
| my $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}}; |
|
| if (($firstres) && ($lastres)) { |
|
| # ----------------------------------------------------------------- Render page |
|
| # -------------------------------------------------------------- Set parameters |
|
| |
|
| |
|
| # ---------------------------- initialize coursedata and userdata for this user |
|
| undef %courseopt; |
|
| undef %useropt; |
|
| |
|
| my $uname=$ENV{'user.name'}; |
# Have we not yet begun? If not, return BEGIN_MAP and |
| my $udom=$ENV{'user.domain'}; |
# remember that we've started. |
| my $uhome=$ENV{'user.home'}; |
if ( !$self->{STARTED} ) { |
| my $cid=$ENV{'request.course.id'}; |
$self->{STARTED} = 1; |
| my $chome=$ENV{'course.'.$cid.'.home'}; |
return $self->BEGIN_MAP; |
| my ($cdom,$cnum)=split(/\_/,$cid); |
} |
| |
|
| my $userprefix=$uname.'_'.$udom.'_'; |
# Get the next resource in the branch |
| |
$self->{HERE} = pop @{$self->{STACK}}; |
| |
|
| unless ($uhome eq 'no_host') { |
# remember that we've seen this, so we don't return it again later |
| # -------------------------------------------------------------- Get coursedata |
$self->{ALREADY_SEEN}->{$self->{HERE}->{ID}} = 1; |
| unless |
|
| ((time-$courserdatas{$cid.'.last_cache'})<240) { |
# Get the next possible resources |
| my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum. |
my $nextUnfiltered; |
| ':resourcedata',$chome); |
if ($self->{DIRECTION} == FORWARD()) { |
| if ($reply!~/^error\:/) { |
$nextUnfiltered = $self->{HERE}->getNext(); |
| $courserdatas{$cid}=$reply; |
} else { |
| $courserdatas{$cid.'.last_cache'}=time; |
$nextUnfiltered = $self->{HERE}->getPrevious(); |
| } |
} |
| } |
my $next = []; |
| map { |
|
| my ($name,$value)=split(/\=/,$_); |
|
| $courseopt{$userprefix.&Apache::lonnet::unescape($name)}= |
|
| &Apache::lonnet::unescape($value); |
|
| } split(/\&/,$courserdatas{$cid}); |
|
| # --------------------------------------------------- Get userdata (if present) |
|
| unless |
|
| ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) { |
|
| my $reply= |
|
| &Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome); |
|
| if ($reply!~/^error\:/) { |
|
| $userrdatas{$uname.'___'.$udom}=$reply; |
|
| $userrdatas{$uname.'___'.$udom.'.last_cache'}=time; |
|
| } |
|
| } |
|
| map { |
|
| my ($name,$value)=split(/\=/,$_); |
|
| $useropt{$userprefix.&Apache::lonnet::unescape($name)}= |
|
| &Apache::lonnet::unescape($value); |
|
| } split(/\&/,$userrdatas{$uname.'___'.$udom}); |
|
| } |
|
| |
|
| @rows=(); |
|
| |
|
| &tracetable(0,$firstres,'&'.$lastres.'&'); |
|
| if ($hash{'src_'.$lastres}) { |
|
| my $brepriv= |
|
| &Apache::lonnet::allowed('bre',$hash{'src_'.$lastres}); |
|
| if (($brepriv eq '2') || ($brepriv eq 'F')) { |
|
| $rows[$#rows+1]=''.$lastres; |
|
| } |
|
| } |
|
| |
|
| # ------------------------------------------------------------------ Page parms |
|
| |
|
| my $j; |
|
| my $i; |
|
| my $lcm=1; |
|
| my $contents=0; |
|
| |
|
| # ---------------------------------------------- Go through table to get layout |
|
| |
|
| for ($i=0;$i<=$#rows;$i++) { |
|
| if ($rows[$i]) { |
|
| $contents++; |
|
| my @colcont=split(/\&/,$rows[$i]); |
|
| $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1)); |
|
| } |
|
| } |
|
| |
|
| |
|
| unless ($contents) { |
|
| $r->content_type('text/html'); |
|
| $r->send_http_header; |
|
| $r->print('<html><body>Empty Map.</body></html>'); |
|
| } else { |
|
| |
|
| # ------------------------------------------------------------------ Build page |
|
| |
|
| my $currenturl=$ENV{'form.postdata'}; |
|
| $currenturl=~s/^http\:\/\///; |
|
| $currenturl=~s/^[^\/]+//; |
|
| |
|
| # ---------------------------------------------------------------- Send headers |
|
| |
|
| $r->content_type('text/html'); |
|
| $r->send_http_header; |
|
| my $date=localtime; |
|
| $r->print( |
|
| '<html>'.&Apache::loncommon::cacheheader(). |
|
| '<head><title>Navigate LON-CAPA Maps</title></head>'); |
|
| $r->print('<body bgcolor="#FFFFFF"'); |
|
| if (($currenturl=~/^\/res/) && |
|
| ($currenturl!~/^\/res\/adm/)) { |
|
| $r->print(' onLoad="window.location.hash='. |
|
| "'curloc'".'"'); |
|
| } |
|
| $r->print('><script>window.focus();</script>'. |
|
| '<img align=right src=/adm/lonIcons/lonlogos.gif>'. |
|
| '<h1>Navigate Course Map</h1>'); |
|
| $r->rflush(); |
|
| if (($currenturl=~/^\/res/) && |
|
| ($currenturl!~/^\/res\/adm/)) { |
|
| $r->print('<a href="#curloc">Current Location</a><p>'); |
|
| } |
|
| # ----------------------------------------------------- The little content list |
|
| for ($i=0;$i<=$#rows;$i++) { |
|
| if ($rows[$i]) { |
|
| my @colcont=split(/\&/,$rows[$i]); |
|
| my $avespan=$lcm/($#colcont+1); |
|
| for ($j=0;$j<=$#colcont;$j++) { |
|
| my $rid=$colcont[$j]; |
|
| if ($rid=~/^h(.+)/) { |
|
| $rid=$1; |
|
| $r->print( |
|
| ' <a href="#'.$rid.'">'.$hash{'title_'.$rid}.'</a><br>'); |
|
| } |
|
| } |
|
| } |
|
| } |
|
| # ----------------------------------------------------------------- Start table |
|
| $r->print('<hr><table cols="'.$lcm.'" border="0">'); |
|
| for ($i=0;$i<=$#rows;$i++) { |
|
| if ($rows[$i]) { |
|
| $r->print("\n<tr>"); |
|
| my @colcont=split(/\&/,$rows[$i]); |
|
| my $avespan=$lcm/($#colcont+1); |
|
| for ($j=0;$j<=$#colcont;$j++) { |
|
| my $rid=$colcont[$j]; |
|
| my $add='<td> '; |
|
| my $adde='</td>'; |
|
| my $hwk='<font color="#223322">'; |
|
| my $hwke='</font>'; |
|
| if ($rid=~/^h(.+)/) { |
|
| $rid=$1; |
|
| $add= |
|
| '<th bgcolor="#AAFF55"><a name="'.$rid.'">'; |
|
| $adde='</th>'; |
|
| } |
|
| if ($rid=~/^p(\d)(\d)\"([\w\: \(\)\/\,]*)\"(.+)/) { |
|
| my $code=$1; |
|
| my $tcode=$2; |
|
| my $ctext=$3; |
|
| $rid=$4; |
|
| if ($tcode eq '1') { |
|
| $add='<td bgcolor="#AAAAAA">'; |
|
| } |
|
| if ($code eq '3') { |
|
| $add='<td bgcolor="#AAFFAA">'; |
|
| } else { |
|
| $add='<td bgcolor="#FFAAAA">'; |
|
| if ($tcode eq '2') { |
|
| $add='<td bgcolor="#FFFFAA">'; |
|
| } |
|
| if ($tcode eq '4') { |
|
| $add='<td bgcolor="#FFFF33"><blink>'; |
|
| $adde='</blink></td>'; |
|
| } |
|
| } |
|
| $hwk='<font color="#888811"><b>'; |
|
| $hwke='</b></font>'; |
|
| if ($code eq '1') { |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| if ($code eq '2') { |
|
| $hwk='<font color="#992222"><b>'; |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| if ($code eq '3') { |
|
| $hwk='<font color="#229922"><b>'; |
|
| $hwke='</b> ('.$ctext.')</font>'; |
|
| } |
|
| } |
|
| if ($hash{'src_'.$rid} eq $currenturl) { |
|
| $add=$add.'<a name="curloc"></a>'. |
|
| '<font color=red><b>-> </b></font>'; |
|
| $adde= |
|
| '<font color=red><b> <-</b></font>'.$adde; |
|
| } |
|
| $r->print($add.'<a href="'.$hash{'src_'.$rid}. |
|
| '">'.$hwk. |
|
| $hash{'title_'.$rid}.$hwke.'</a>'.$adde); |
|
| } |
|
| $r->print('</tr>'); |
|
| } |
|
| } |
|
| $r->print("\n</table>"); |
|
| $r->print('</body></html>'); |
|
| # -------------------------------------------------------------------- End page |
|
| } |
|
| # ------------------------------------------------------------- End render page |
|
| } else { |
|
| $r->content_type('text/html'); |
|
| $r->send_http_header; |
|
| $r->print('<html><body>Coursemap undefined.</body></html>'); |
|
| } |
|
| # ------------------------------------------------------------------ Untie hash |
|
| unless (untie(%hash)) { |
|
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
| "Could not untie coursemap $fn (browse).</font>"); |
|
| } |
|
| unless (untie(%parmhash)) { |
|
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
| "Could not untie parmhash (browse).</font>"); |
|
| } |
|
| # -------------------------------------------------------------------- All done |
|
| return OK; |
|
| # ----------------------------------------------- Errors, hash could no be tied |
|
| } |
|
| } |
|
| } |
|
| |
|
| $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; |
# filter the next possibilities to remove things we've |
| return HTTP_NOT_ACCEPTABLE; |
# already seen. |
| |
foreach (@$nextUnfiltered) { |
| |
if (!defined($self->{ALREADY_SEEN}->{$_->{ID}})) { |
| |
push @$next, $_; |
| |
} |
| |
} |
| |
|
| |
while (@$next) { |
| |
# copy the next possibilities over to the stack |
| |
push @{$self->{STACK}}, shift @$next; |
| |
} |
| |
|
| |
# If this is a map and we want to recurse down it... (not filtered out) |
| |
if ($self->{HERE}->is_map() && |
| |
(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) { |
| |
$self->{RECURSIVE_ITERATOR_FLAG} = 1; |
| |
my $firstResource = $self->{HERE}->map_start(); |
| |
my $finishResource = $self->{HERE}->map_finish(); |
| |
|
| |
$self->{RECURSIVE_ITERATOR} = |
| |
Apache::lonnavmaps::DFSiterator->new ($self->{NAV_MAP}, $firstResource, |
| |
$finishResource, $self->{FILTER}, $self->{ALREADY_SEEN}, |
| |
$self->{CONDITION}, $self->{DIRECTION}); |
| |
} |
| |
|
| |
return $self->{HERE}; |
| |
} |
| |
|
| |
# Identical to the full iterator methods of the same name. Hate to copy/paste |
| |
# but I also hate to "inherit" either iterator from the other. |
| |
|
| |
sub getStack { |
| |
my $self=shift; |
| |
|
| |
my @stack; |
| |
|
| |
$self->populateStack(\@stack); |
| |
|
| |
return \@stack; |
| |
} |
| |
|
| |
# Private method: Calls the iterators recursively to populate the stack. |
| |
sub populateStack { |
| |
my $self=shift; |
| |
my $stack = shift; |
| |
|
| |
push @$stack, $self->{HERE} if ($self->{HERE}); |
| |
|
| |
if ($self->{RECURSIVE_ITERATOR_FLAG}) { |
| |
$self->{RECURSIVE_ITERATOR}->populateStack($stack); |
| |
} |
| } |
} |
| |
|
| 1; |
1; |
| __END__ |
|
| |
|
| |
package Apache::lonnavmaps::resource; |
| |
|
| |
use Apache::lonnet; |
| |
|
| |
=pod |
| |
|
| |
=head1 Object: resource |
| |
|
| |
X<resource, navmap object> |
| |
A resource object encapsulates a resource in a resource map, allowing |
| |
easy manipulation of the resource, querying the properties of the |
| |
resource (including user properties), and represents a reference that |
| |
can be used as the canonical representation of the resource by |
| |
lonnavmap clients like renderers. |
| |
|
| |
A resource only makes sense in the context of a navmap, as some of the |
| |
data is stored in the navmap object. |
| |
|
| |
You will probably never need to instantiate this object directly. Use |
| |
Apache::lonnavmaps::navmap, and use the "start" method to obtain the |
| |
starting resource. |
| |
|
| |
Resource objects respect the parameter_hiddenparts, which suppresses |
| |
various parts according to the wishes of the map author. As of this |
| |
writing, there is no way to override this parameter, and suppressed |
| |
parts will never be returned, nor will their response types or ids be |
| |
stored. |
| |
|
| |
=head2 Overview |
| |
|
| |
A B<Resource> is the most granular type of object in LON-CAPA that can |
| |
be included in a course. It can either be a particular resource, like |
| |
an HTML page, external resource, problem, etc., or it can be a |
| |
container sequence, such as a "page" or a "map". |
| |
|
| |
To see a sequence from the user's point of view, please see the |
| |
B<Creating a Course: Maps and Sequences> chapter of the Author's |
| |
Manual. |
| |
|
| |
A Resource Object, once obtained from a navmap object via a B<getBy*> |
| |
method of the navmap, or from an iterator, allows you to query |
| |
information about that resource. |
| |
|
| |
Generally, you do not ever want to create a resource object yourself, |
| |
so creation has been left undocumented. Always retrieve resources |
| |
from navmap objects. |
| |
|
| |
=head3 Identifying Resources |
| |
|
| |
X<big hash>Every resource is identified by a Resource ID in the big hash that is |
| |
unique to that resource for a given course. X<resource ID, in big hash> |
| |
The Resource ID has the form #.#, where the first number is the same |
| |
for every resource in a map, and the second is unique. For instance, |
| |
for a course laid out like this: |
| |
|
| |
* Problem 1 |
| |
* Map |
| |
* Resource 2 |
| |
* Resource 3 |
| |
|
| |
C<Problem 1> and C<Map> will share a first number, and C<Resource 2> |
| |
C<Resource 3> will share a first number. The second number may end up |
| |
re-used between the two groups. |
| |
|
| |
The resource ID is only used in the big hash, but can be used in the |
| |
context of a course to identify a resource easily. (For instance, the |
| |
printing system uses it to record which resources from a sequence you |
| |
wish to print.) |
| |
|
| |
X<symb> X<resource, symb> |
| |
All resources also have B<symb>s, which uniquely identify a resource |
| |
in a course. Many internal LON-CAPA functions expect a symb. A symb |
| |
carries along with it the URL of the resource, and the map it appears |
| |
in. Symbs are much larger then resource IDs. |
| |
|
| |
=cut |
| |
|
| |
sub new { |
| |
# magic invocation to create a class instance |
| |
my $proto = shift; |
| |
my $class = ref($proto) || $proto; |
| |
my $self = {}; |
| |
|
| |
$self->{NAV_MAP} = shift; |
| |
$self->{ID} = shift; |
| |
|
| |
# Store this new resource in the parent nav map's cache. |
| |
$self->{NAV_MAP}->{RESOURCE_CACHE}->{$self->{ID}} = $self; |
| |
$self->{RESOURCE_ERROR} = 0; |
| |
|
| |
# A hash that can be used by two-pass algorithms to store data |
| |
# about this resource in. Not used by the resource object |
| |
# directly. |
| |
$self->{DATA} = {}; |
| |
|
| |
bless($self); |
| |
|
| |
return $self; |
| |
} |
| |
|
| |
# private function: simplify the NAV_HASH lookups we keep doing |
| |
# pass the name, and to automatically append my ID, pass a true val on the |
| |
# second param |
| |
sub navHash { |
| |
my $self = shift; |
| |
my $param = shift; |
| |
my $id = shift; |
| |
return $self->{NAV_MAP}->navhash($param . ($id?$self->{ID}:"")); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=head2 Methods |
| |
|
| |
Once you have a resource object, here's what you can do with it: |
| |
|
| |
=head3 Attribute Retrieval |
| |
|
| |
Every resource has certain attributes that can be retrieved and used: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<ID>: Every resource has an ID that is unique for that |
| |
resource in the course it is in. The ID is actually in the hash |
| |
representing the resource, so for a resource object $res, obtain |
| |
it via C<$res->{ID}). |
| |
|
| |
=item * B<compTitle>: |
| |
|
| |
Returns a "composite title", that is equal to $res->title() if the |
| |
resource has a title, and is otherwise the last part of the URL (e.g., |
| |
"problem.problem"). |
| |
|
| |
=item * B<ext>: |
| |
|
| |
Returns true if the resource is external. |
| |
|
| |
=item * B<kind>: |
| |
|
| |
Returns the kind of the resource from the compiled nav map. |
| |
|
| |
=item * B<randomout>: |
| |
|
| |
Returns true if this resource was chosen to NOT be shown to the user |
| |
by the random map selection feature. In other words, this is usually |
| |
false. |
| |
|
| |
=item * B<randompick>: |
| |
|
| |
Returns true for a map if the randompick feature is being used on the |
| |
map. (?) |
| |
|
| |
=item * B<src>: |
| |
|
| |
Returns the source for the resource. |
| |
|
| |
=item * B<symb>: |
| |
|
| |
Returns the symb for the resource. |
| |
|
| |
=item * B<title>: |
| |
|
| |
Returns the title of the resource. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
# These info functions can be used directly, as they don't return |
| |
# resource information. |
| |
sub comesfrom { my $self=shift; return $self->navHash("comesfrom_", 1); } |
| |
sub ext { my $self=shift; return $self->navHash("ext_", 1) eq 'true:'; } |
| |
sub from { my $self=shift; return $self->navHash("from_", 1); } |
| |
# considered private and undocumented |
| |
sub goesto { my $self=shift; return $self->navHash("goesto_", 1); } |
| |
sub kind { my $self=shift; return $self->navHash("kind_", 1); } |
| |
sub randomout { my $self=shift; return $self->navHash("randomout_", 1); } |
| |
sub randompick { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->{PARM_HASH}->{$self->symb . |
| |
'.0.parameter_randompick'}; |
| |
} |
| |
sub src { |
| |
my $self=shift; |
| |
return $self->navHash("src_", 1); |
| |
} |
| |
sub symb { |
| |
my $self=shift; |
| |
(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/; |
| |
my $symbSrc = &Apache::lonnet::declutter($self->src()); |
| |
my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first)) |
| |
. '___' . $second . '___' . $symbSrc; |
| |
return &Apache::lonnet::symbclean($symb); |
| |
} |
| |
sub title { |
| |
my $self=shift; |
| |
if ($self->{ID} eq '0.0') { |
| |
# If this is the top-level map, return the title of the course |
| |
# since this map can not be titled otherwise. |
| |
return $ENV{'course.'.$ENV{'request.course.id'}.'.description'}; |
| |
} |
| |
return $self->navHash("title_", 1); } |
| |
# considered private and undocumented |
| |
sub to { my $self=shift; return $self->navHash("to_", 1); } |
| |
sub compTitle { |
| |
my $self = shift; |
| |
my $title = $self->title(); |
| |
$title=~s/\&colon\;/\:/gs; |
| |
if (!$title) { |
| |
$title = $self->src(); |
| |
$title = substr($title, rindex($title, '/') + 1); |
| |
} |
| |
return $title; |
| |
} |
| |
=pod |
| |
|
| |
B<Predicate Testing the Resource> |
| |
|
| |
These methods are shortcuts to deciding if a given resource has a given property. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<is_map>: |
| |
|
| |
Returns true if the resource is a map type. |
| |
|
| |
=item * B<is_problem>: |
| |
|
| |
Returns true if the resource is a problem type, false |
| |
otherwise. (Looks at the extension on the src field; might need more |
| |
to work correctly.) |
| |
|
| |
=item * B<is_page>: |
| |
|
| |
Returns true if the resource is a page. |
| |
|
| |
=item * B<is_sequence>: |
| |
|
| |
Returns true if the resource is a sequence. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub hasResource { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->hasResource(@_); |
| |
} |
| |
|
| |
sub retrieveResources { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->retrieveResources(@_); |
| |
} |
| |
|
| |
sub is_html { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return ($src =~ /html$/); |
| |
} |
| |
sub is_map { my $self=shift; return defined($self->navHash("is_map_", 1)); } |
| |
sub is_page { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return $self->navHash("is_map_", 1) && |
| |
$self->navHash("map_type_" . $self->map_pc()) eq 'page'; |
| |
} |
| |
sub is_problem { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return ($src =~ /\.(problem|exam|quiz|assess|survey|form|library)$/) |
| |
} |
| |
sub contains_problem { |
| |
my $self=shift; |
| |
if ($self->is_page()) { |
| |
my $hasProblem=$self->hasResource($self,sub { $_[0]->is_problem() },1); |
| |
return $hasProblem; |
| |
} |
| |
return 0; |
| |
} |
| |
sub is_sequence { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return $self->navHash("is_map_", 1) && |
| |
$self->navHash("map_type_" . $self->map_pc()) eq 'sequence'; |
| |
} |
| |
sub is_survey { |
| |
my $self = shift(); |
| |
my $part = shift(); |
| |
if ($self->parmval('type',$part) eq 'survey') { |
| |
return 1; |
| |
} |
| |
if ($self->src() =~ /\.(survey)$/) { |
| |
return 1; |
| |
} |
| |
return 0; |
| |
} |
| |
|
| |
sub is_empty_sequence { |
| |
my $self=shift; |
| |
my $src = $self->src(); |
| |
return !$self->is_page() && $self->navHash("is_map_", 1) && !$self->navHash("map_type_" . $self->map_pc()); |
| |
} |
| |
|
| |
# Private method: Shells out to the parmval in the nav map, handler parts. |
| |
sub parmval { |
| |
my $self = shift; |
| |
my $what = shift; |
| |
my $part = shift; |
| |
if (!defined($part)) { |
| |
$part = '0'; |
| |
} |
| |
return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb()); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<Map Methods> |
| |
|
| |
These methods are useful for getting information about the map |
| |
properties of the resource, if the resource is a map (B<is_map>). |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<map_finish>: |
| |
|
| |
Returns a reference to a resource object corresponding to the finish |
| |
resource of the map. |
| |
|
| |
=item * B<map_pc>: |
| |
|
| |
Returns the pc value of the map, which is the first number that |
| |
appears in the resource ID of the resources in the map, and is the |
| |
number that appears around the middle of the symbs of the resources in |
| |
that map. |
| |
|
| |
=item * B<map_start>: |
| |
|
| |
Returns a reference to a resource object corresponding to the start |
| |
resource of the map. |
| |
|
| |
=item * B<map_type>: |
| |
|
| |
Returns a string with the type of the map in it. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub map_finish { |
| |
my $self = shift; |
| |
my $src = $self->src(); |
| |
$src = Apache::lonnet::clutter($src); |
| |
my $res = $self->navHash("map_finish_$src", 0); |
| |
$res = $self->{NAV_MAP}->getById($res); |
| |
return $res; |
| |
} |
| |
sub map_pc { |
| |
my $self = shift; |
| |
my $src = $self->src(); |
| |
return $self->navHash("map_pc_$src", 0); |
| |
} |
| |
sub map_start { |
| |
my $self = shift; |
| |
my $src = $self->src(); |
| |
$src = Apache::lonnet::clutter($src); |
| |
my $res = $self->navHash("map_start_$src", 0); |
| |
$res = $self->{NAV_MAP}->getById($res); |
| |
return $res; |
| |
} |
| |
sub map_type { |
| |
my $self = shift; |
| |
my $pc = $self->map_pc(); |
| |
return $self->navHash("map_type_$pc", 0); |
| |
} |
| |
|
| |
##### |
| |
# Property queries |
| |
##### |
| |
|
| |
# These functions will be responsible for returning the CORRECT |
| |
# VALUE for the parameter, no matter what. So while they may look |
| |
# like direct calls to parmval, they can be more then that. |
| |
# So, for instance, the duedate function should use the "duedatetype" |
| |
# information, rather then the resource object user. |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource Parameters |
| |
|
| |
In order to use the resource parameters correctly, the nav map must |
| |
have been instantiated with genCourseAndUserOptions set to true, so |
| |
the courseopt and useropt is read correctly. Then, you can call these |
| |
functions to get the relevant parameters for the resource. Each |
| |
function defaults to part "0", but can be directed to another part by |
| |
passing the part as the parameter. |
| |
|
| |
These methods are responsible for getting the parameter correct, not |
| |
merely reflecting the contents of the GDBM hashes. As we move towards |
| |
dates relative to other dates, these methods should be updated to |
| |
reflect that. (Then, anybody using these methods will not have to update |
| |
their code.) |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<acc>: |
| |
|
| |
Get the Client IP/Name Access Control information. |
| |
|
| |
=item * B<answerdate>: |
| |
|
| |
Get the answer-reveal date for the problem. |
| |
|
| |
=item * B<awarded>: |
| |
|
| |
Gets the awarded value for the problem part. Requires genUserData set to |
| |
true when the navmap object was created. |
| |
|
| |
=item * B<duedate>: |
| |
|
| |
Get the due date for the problem. |
| |
|
| |
=item * B<tries>: |
| |
|
| |
Get the number of tries the student has used on the problem. |
| |
|
| |
=item * B<maxtries>: |
| |
|
| |
Get the number of max tries allowed. |
| |
|
| |
=item * B<opendate>: |
| |
|
| |
Get the open date for the problem. |
| |
|
| |
=item * B<sig>: |
| |
|
| |
Get the significant figures setting. |
| |
|
| |
=item * B<tol>: |
| |
|
| |
Get the tolerance for the problem. |
| |
|
| |
=item * B<tries>: |
| |
|
| |
Get the number of tries the user has already used on the problem. |
| |
|
| |
=item * B<type>: |
| |
|
| |
Get the question type for the problem. |
| |
|
| |
=item * B<weight>: |
| |
|
| |
Get the weight for the problem. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub acc { |
| |
(my $self, my $part) = @_; |
| |
return $self->parmval("acc", $part); |
| |
} |
| |
sub answerdate { |
| |
(my $self, my $part) = @_; |
| |
# Handle intervals |
| |
if ($self->parmval("answerdate.type", $part) eq 'date_interval') { |
| |
return $self->duedate($part) + |
| |
$self->parmval("answerdate", $part); |
| |
} |
| |
return $self->parmval("answerdate", $part); |
| |
} |
| |
sub awarded { |
| |
my $self = shift; my $part = shift; |
| |
$self->{NAV_MAP}->get_user_data(); |
| |
if (!defined($part)) { $part = '0'; } |
| |
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'}; |
| |
} |
| |
sub duedate { |
| |
(my $self, my $part) = @_; |
| |
my $interval=$self->parmval("interval", $part); |
| |
if ($interval) { |
| |
my $first_access=&Apache::lonnet::get_first_access('map',$self->symb); |
| |
if ($first_access) { return ($first_access+$interval); } |
| |
} |
| |
return $self->parmval("duedate", $part); |
| |
} |
| |
sub maxtries { |
| |
(my $self, my $part) = @_; |
| |
return $self->parmval("maxtries", $part); |
| |
} |
| |
sub opendate { |
| |
(my $self, my $part) = @_; |
| |
if ($self->parmval("opendate.type", $part) eq 'date_interval') { |
| |
return $self->duedate($part) - |
| |
$self->parmval("opendate", $part); |
| |
} |
| |
return $self->parmval("opendate"); |
| |
} |
| |
sub problemstatus { |
| |
(my $self, my $part) = @_; |
| |
return lc $self->parmval("problemstatus", $part); |
| |
} |
| |
sub sig { |
| |
(my $self, my $part) = @_; |
| |
return $self->parmval("sig", $part); |
| |
} |
| |
sub tol { |
| |
(my $self, my $part) = @_; |
| |
return $self->parmval("tol", $part); |
| |
} |
| |
sub tries { |
| |
my $self = shift; |
| |
my $tries = $self->queryRestoreHash('tries', shift); |
| |
if (!defined($tries)) { return '0';} |
| |
return $tries; |
| |
} |
| |
sub type { |
| |
(my $self, my $part) = @_; |
| |
return $self->parmval("type", $part); |
| |
} |
| |
sub weight { |
| |
my $self = shift; my $part = shift; |
| |
if (!defined($part)) { $part = '0'; } |
| |
return &Apache::lonnet::EXT('resource.'.$part.'.weight', |
| |
$self->symb(), $ENV{'user.domain'}, |
| |
$ENV{'user.name'}, |
| |
$ENV{'request.course.sec'}); |
| |
} |
| |
sub part_display { |
| |
my $self= shift(); my $partID = shift(); |
| |
if (! defined($partID)) { $partID = '0'; } |
| |
my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display', |
| |
$self->symb); |
| |
if (! defined($display) || $display eq '') { |
| |
$display = $partID; |
| |
} |
| |
return $display; |
| |
} |
| |
|
| |
# Multiple things need this |
| |
sub getReturnHash { |
| |
my $self = shift; |
| |
|
| |
if (!defined($self->{RETURN_HASH})) { |
| |
my %tmpHash = &Apache::lonnet::restore($self->symb()); |
| |
$self->{RETURN_HASH} = \%tmpHash; |
| |
} |
| |
} |
| |
|
| |
###### |
| |
# Status queries |
| |
###### |
| |
|
| |
# These methods query the status of problems. |
| |
|
| |
# If we need to count parts, this function determines the number of |
| |
# parts from the metadata. When called, it returns a reference to a list |
| |
# of strings corresponding to the parts. (Thus, using it in a scalar context |
| |
# tells you how many parts you have in the problem: |
| |
# $partcount = scalar($resource->countParts()); |
| |
# Don't use $self->{PARTS} directly because you don't know if it's been |
| |
# computed yet. |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource misc |
| |
|
| |
Misc. functions for the resource. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<hasDiscussion>: |
| |
|
| |
Returns a false value if there has been discussion since the user last |
| |
logged in, true if there has. Always returns false if the discussion |
| |
data was not extracted when the nav map was constructed. |
| |
|
| |
=item * B<getFeedback>: |
| |
|
| |
Gets the feedback for the resource and returns the raw feedback string |
| |
for the resource, or the null string if there is no feedback or the |
| |
email data was not extracted when the nav map was constructed. Usually |
| |
used like this: |
| |
|
| |
for (split(/\,/, $res->getFeedback())) { |
| |
my $link = &Apache::lonnet::escape($_); |
| |
... |
| |
|
| |
and use the link as appropriate. |
| |
|
| |
=cut |
| |
|
| |
sub hasDiscussion { |
| |
my $self = shift; |
| |
return $self->{NAV_MAP}->hasDiscussion($self->symb()); |
| |
} |
| |
|
| |
sub getFeedback { |
| |
my $self = shift; |
| |
my $source = $self->src(); |
| |
if ($source =~ /^\/res\//) { $source = substr $source, 5; } |
| |
return $self->{NAV_MAP}->getFeedback($source); |
| |
} |
| |
|
| |
sub getErrors { |
| |
my $self = shift; |
| |
my $source = $self->src(); |
| |
if ($source =~ /^\/res\//) { $source = substr $source, 5; } |
| |
return $self->{NAV_MAP}->getErrors($source); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=item * B<parts>(): |
| |
|
| |
Returns a list reference containing sorted strings corresponding to |
| |
each part of the problem. Single part problems have only a part '0'. |
| |
Multipart problems do not return their part '0', since they typically |
| |
do not really matter. |
| |
|
| |
=item * B<countParts>(): |
| |
|
| |
Returns the number of parts of the problem a student can answer. Thus, |
| |
for single part problems, returns 1. For multipart, it returns the |
| |
number of parts in the problem, not including psuedo-part 0. |
| |
|
| |
=item * B<multipart>(): |
| |
|
| |
Returns true if the problem is multipart, false otherwise. Use this instead |
| |
of countParts if all you want is multipart/not multipart. |
| |
|
| |
=item * B<responseType>($part): |
| |
|
| |
Returns the response type of the part, without the word "response" on the |
| |
end. Example return values: 'string', 'essay', 'numeric', etc. |
| |
|
| |
=item * B<responseIds>($part): |
| |
|
| |
Retreives the response IDs for the given part as an array reference containing |
| |
strings naming the response IDs. This may be empty. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub parts { |
| |
my $self = shift; |
| |
|
| |
if ($self->ext) { return []; } |
| |
|
| |
$self->extractParts(); |
| |
return $self->{PARTS}; |
| |
} |
| |
|
| |
sub countParts { |
| |
my $self = shift; |
| |
|
| |
my $parts = $self->parts(); |
| |
|
| |
# If I left this here, then it's not necessary. |
| |
#my $delta = 0; |
| |
#for my $part (@$parts) { |
| |
# if ($part eq '0') { $delta--; } |
| |
#} |
| |
|
| |
if ($self->{RESOURCE_ERROR}) { |
| |
return 0; |
| |
} |
| |
|
| |
return scalar(@{$parts}); # + $delta; |
| |
} |
| |
|
| |
sub multipart { |
| |
my $self = shift; |
| |
return $self->countParts() > 1; |
| |
} |
| |
|
| |
sub singlepart { |
| |
my $self = shift; |
| |
return $self->countParts() == 1; |
| |
} |
| |
|
| |
sub responseType { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
|
| |
$self->extractParts(); |
| |
if (defined($self->{RESPONSE_TYPES}->{$part})) { |
| |
return @{$self->{RESPONSE_TYPES}->{$part}}; |
| |
} else { |
| |
return undef; |
| |
} |
| |
} |
| |
|
| |
sub responseIds { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
|
| |
$self->extractParts(); |
| |
if (defined($self->{RESPONSE_IDS}->{$part})) { |
| |
return @{$self->{RESPONSE_IDS}->{$part}}; |
| |
} else { |
| |
return undef; |
| |
} |
| |
} |
| |
|
| |
# Private function: Extracts the parts information, both part names and |
| |
# part types, and saves it. |
| |
sub extractParts { |
| |
my $self = shift; |
| |
|
| |
return if (defined($self->{PARTS})); |
| |
return if ($self->ext); |
| |
|
| |
$self->{PARTS} = []; |
| |
|
| |
my %parts; |
| |
|
| |
# Retrieve part count, if this is a problem |
| |
if ($self->is_problem()) { |
| |
my $partorder = &Apache::lonnet::metadata($self->src(), 'partorder'); |
| |
my $metadata = &Apache::lonnet::metadata($self->src(), 'packages'); |
| |
|
| |
if ($partorder) { |
| |
my @parts; |
| |
for my $part (split (/,/,$partorder)) { |
| |
if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) { |
| |
push @parts, $part; |
| |
$parts{$part} = 1; |
| |
} |
| |
} |
| |
$self->{PARTS} = \@parts; |
| |
} else { |
| |
if (!$metadata) { |
| |
$self->{RESOURCE_ERROR} = 1; |
| |
$self->{PARTS} = []; |
| |
$self->{PART_TYPE} = {}; |
| |
return; |
| |
} |
| |
foreach (split(/\,/,$metadata)) { |
| |
if ($_ =~ /^part_(.*)$/) { |
| |
my $part = $1; |
| |
# This floods the logs if it blows up |
| |
if (defined($parts{$part})) { |
| |
&Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->symb()); |
| |
} |
| |
|
| |
# check to see if part is turned off. |
| |
|
| |
if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) { |
| |
$parts{$part} = 1; |
| |
} |
| |
} |
| |
} |
| |
my @sortedParts = sort keys %parts; |
| |
$self->{PARTS} = \@sortedParts; |
| |
} |
| |
|
| |
|
| |
# These hashes probably do not need names that end with "Hash".... |
| |
my %responseIdHash; |
| |
my %responseTypeHash; |
| |
|
| |
|
| |
# Init the responseIdHash |
| |
foreach (@{$self->{PARTS}}) { |
| |
$responseIdHash{$_} = []; |
| |
} |
| |
|
| |
# Now, the unfortunate thing about this is that parts, part name, and |
| |
# response id are delimited by underscores, but both the part |
| |
# name and response id can themselves have underscores in them. |
| |
# So we have to use our knowlege of part names to figure out |
| |
# where the part names begin and end, and even then, it is possible |
| |
# to construct ambiguous situations. |
| |
foreach (split /,/, $metadata) { |
| |
if ($_ =~ /^([a-zA-Z]+)response_(.*)/) { |
| |
my $responseType = $1; |
| |
my $partStuff = $2; |
| |
my $partIdSoFar = ''; |
| |
my @partChunks = split /_/, $partStuff; |
| |
my $i = 0; |
| |
for ($i = 0; $i < scalar(@partChunks); $i++) { |
| |
if ($partIdSoFar) { $partIdSoFar .= '_'; } |
| |
$partIdSoFar .= $partChunks[$i]; |
| |
if ($parts{$partIdSoFar}) { |
| |
my @otherChunks = @partChunks[$i+1..$#partChunks]; |
| |
my $responseId = join('_', @otherChunks); |
| |
push @{$responseIdHash{$partIdSoFar}}, $responseId; |
| |
push @{$responseTypeHash{$partIdSoFar}}, $responseType; |
| |
} |
| |
} |
| |
} |
| |
} |
| |
my $resorder = &Apache::lonnet::metadata($self->src(),'responseorder'); |
| |
# |
| |
# Reorder the arrays in the %responseIdHash and %responseTypeHash |
| |
if ($resorder) { |
| |
my @resorder=split(/,/,$resorder); |
| |
foreach my $part (keys(%responseIdHash)) { |
| |
my $i=0; |
| |
my %resids = map { ($_,$i++) } @{ $responseIdHash{$part} }; |
| |
my @neworder; |
| |
foreach my $possibleid (@resorder) { |
| |
if (exists($resids{$possibleid})) { |
| |
push(@neworder,$resids{$possibleid}); |
| |
} |
| |
} |
| |
my @ids; |
| |
my @type; |
| |
foreach my $element (@neworder) { |
| |
push (@ids,$responseIdHash{$part}->[$element]); |
| |
push (@type,$responseTypeHash{$part}->[$element]); |
| |
} |
| |
$responseIdHash{$part}=\@ids; |
| |
$responseTypeHash{$part}=\@type; |
| |
} |
| |
} |
| |
$self->{RESPONSE_IDS} = \%responseIdHash; |
| |
$self->{RESPONSE_TYPES} = \%responseTypeHash; |
| |
} |
| |
|
| |
return; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource Status |
| |
|
| |
Problem resources have status information, reflecting their various |
| |
dates and completion statuses. |
| |
|
| |
There are two aspects to the status: the date-related information and |
| |
the completion information. |
| |
|
| |
Idiomatic usage of these two methods would probably look something |
| |
like |
| |
|
| |
foreach ($resource->parts()) { |
| |
my $dateStatus = $resource->getDateStatus($_); |
| |
my $completionStatus = $resource->getCompletionStatus($_); |
| |
|
| |
or |
| |
|
| |
my $status = $resource->status($_); |
| |
|
| |
... use it here ... |
| |
} |
| |
|
| |
Which you use depends on exactly what you are looking for. The |
| |
status() function has been optimized for the nav maps display and may |
| |
not precisely match what you need elsewhere. |
| |
|
| |
The symbolic constants shown below can be accessed through the |
| |
resource object: C<$res->OPEN>. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getDateStatus>($part): |
| |
|
| |
($part defaults to 0). A convenience function that returns a symbolic |
| |
constant telling you about the date status of the part. The possible |
| |
return values are: |
| |
|
| |
=back |
| |
|
| |
B<Date Codes> |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<OPEN_LATER>: |
| |
|
| |
The problem will be opened later. |
| |
|
| |
=item * B<OPEN>: |
| |
|
| |
Open and not yet due. |
| |
|
| |
|
| |
=item * B<PAST_DUE_ANSWER_LATER>: |
| |
|
| |
The due date has passed, but the answer date has not yet arrived. |
| |
|
| |
=item * B<PAST_DUE_NO_ANSWER>: |
| |
|
| |
The due date has passed and there is no answer opening date set. |
| |
|
| |
=item * B<ANSWER_OPEN>: |
| |
|
| |
The answer date is here. |
| |
|
| |
=item * B<NETWORK_FAILURE>: |
| |
|
| |
The information is unknown due to network failure. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
# Apparently the compiler optimizes these into constants automatically |
| |
sub OPEN_LATER { return 0; } |
| |
sub OPEN { return 1; } |
| |
sub PAST_DUE_NO_ANSWER { return 2; } |
| |
sub PAST_DUE_ANSWER_LATER { return 3; } |
| |
sub ANSWER_OPEN { return 4; } |
| |
sub NOTHING_SET { return 5; } |
| |
sub NETWORK_FAILURE { return 100; } |
| |
|
| |
# getDateStatus gets the date status for a given problem part. |
| |
# Because answer date, due date, and open date are fully independent |
| |
# (i.e., it is perfectly possible to *only* have an answer date), |
| |
# we have to completely cover the 3x3 maxtrix of (answer, due, open) x |
| |
# (past, future, none given). This function handles this with a decision |
| |
# tree. Read the comments to follow the decision tree. |
| |
|
| |
sub getDateStatus { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
$part = "0" if (!defined($part)); |
| |
|
| |
# Always return network failure if there was one. |
| |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| |
my $now = time(); |
| |
|
| |
my $open = $self->opendate($part); |
| |
my $due = $self->duedate($part); |
| |
my $answer = $self->answerdate($part); |
| |
|
| |
if (!$open && !$due && !$answer) { |
| |
# no data on the problem at all |
| |
# should this be the same as "open later"? think multipart. |
| |
return $self->NOTHING_SET; |
| |
} |
| |
if (!$open || $now < $open) {return $self->OPEN_LATER} |
| |
if (!$due || $now < $due) {return $self->OPEN} |
| |
if ($answer && $now < $answer) {return $self->PAST_DUE_ANSWER_LATER} |
| |
if ($answer) { return $self->ANSWER_OPEN; } |
| |
return PAST_DUE_NO_ANSWER; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<> |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getCompletionStatus>($part): |
| |
|
| |
($part defaults to 0.) A convenience function that returns a symbolic |
| |
constant telling you about the completion status of the part, with the |
| |
following possible results: |
| |
|
| |
=back |
| |
|
| |
B<Completion Codes> |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<NOT_ATTEMPTED>: |
| |
|
| |
Has not been attempted at all. |
| |
|
| |
=item * B<INCORRECT>: |
| |
|
| |
Attempted, but wrong by student. |
| |
|
| |
=item * B<INCORRECT_BY_OVERRIDE>: |
| |
|
| |
Attempted, but wrong by instructor override. |
| |
|
| |
=item * B<CORRECT>: |
| |
|
| |
Correct or correct by instructor. |
| |
|
| |
=item * B<CORRECT_BY_OVERRIDE>: |
| |
|
| |
Correct by instructor override. |
| |
|
| |
=item * B<EXCUSED>: |
| |
|
| |
Excused. Not yet implemented. |
| |
|
| |
=item * B<NETWORK_FAILURE>: |
| |
|
| |
Information not available due to network failure. |
| |
|
| |
=item * B<ATTEMPTED>: |
| |
|
| |
Attempted, and not yet graded. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub NOT_ATTEMPTED { return 10; } |
| |
sub INCORRECT { return 11; } |
| |
sub INCORRECT_BY_OVERRIDE { return 12; } |
| |
sub CORRECT { return 13; } |
| |
sub CORRECT_BY_OVERRIDE { return 14; } |
| |
sub EXCUSED { return 15; } |
| |
sub ATTEMPTED { return 16; } |
| |
|
| |
sub getCompletionStatus { |
| |
my $self = shift; |
| |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| |
my $status = $self->queryRestoreHash('solved', shift); |
| |
|
| |
# Left as separate if statements in case we ever do more with this |
| |
if ($status eq 'correct_by_student') {return $self->CORRECT;} |
| |
if ($status eq 'correct_by_scantron') {return $self->CORRECT;} |
| |
if ($status eq 'correct_by_override') {return $self->CORRECT_BY_OVERRIDE; } |
| |
if ($status eq 'incorrect_attempted') {return $self->INCORRECT; } |
| |
if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; } |
| |
if ($status eq 'excused') {return $self->EXCUSED; } |
| |
if ($status eq 'ungraded_attempted') {return $self->ATTEMPTED; } |
| |
return $self->NOT_ATTEMPTED; |
| |
} |
| |
|
| |
sub queryRestoreHash { |
| |
my $self = shift; |
| |
my $hashentry = shift; |
| |
my $part = shift; |
| |
$part = "0" if (!defined($part) || $part eq ''); |
| |
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE}); |
| |
|
| |
$self->getReturnHash(); |
| |
|
| |
return $self->{RETURN_HASH}->{'resource.'.$part.'.'.$hashentry}; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<Composite Status> |
| |
|
| |
Along with directly returning the date or completion status, the |
| |
resource object includes a convenience function B<status>() that will |
| |
combine the two status tidbits into one composite status that can |
| |
represent the status of the resource as a whole. This method represents |
| |
the concept of the thing we want to display to the user on the nav maps |
| |
screen, which is a combination of completion and open status. The precise logic is |
| |
documented in the comments of the status method. The following results |
| |
may be returned, all available as methods on the resource object |
| |
($res->NETWORK_FAILURE): In addition to the return values that match |
| |
the date or completion status, this function can return "ANSWER_SUBMITTED" |
| |
if that problemstatus parameter value is set to No, suppressing the |
| |
incorrect/correct feedback. |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<NETWORK_FAILURE>: |
| |
|
| |
The network has failed and the information is not available. |
| |
|
| |
=item * B<NOTHING_SET>: |
| |
|
| |
No dates have been set for this problem (part) at all. (Because only |
| |
certain parts of a multi-part problem may be assigned, this can not be |
| |
collapsed into "open later", as we do not know a given part will EVER |
| |
be opened. For single part, this is the same as "OPEN_LATER".) |
| |
|
| |
=item * B<CORRECT>: |
| |
|
| |
For any reason at all, the part is considered correct. |
| |
|
| |
=item * B<EXCUSED>: |
| |
|
| |
For any reason at all, the problem is excused. |
| |
|
| |
=item * B<PAST_DUE_NO_ANSWER>: |
| |
|
| |
The problem is past due, not considered correct, and no answer date is |
| |
set. |
| |
|
| |
=item * B<PAST_DUE_ANSWER_LATER>: |
| |
|
| |
The problem is past due, not considered correct, and an answer date in |
| |
the future is set. |
| |
|
| |
=item * B<ANSWER_OPEN>: |
| |
|
| |
The problem is past due, not correct, and the answer is now available. |
| |
|
| |
=item * B<OPEN_LATER>: |
| |
|
| |
The problem is not yet open. |
| |
|
| |
=item * B<TRIES_LEFT>: |
| |
|
| |
The problem is open, has been tried, is not correct, but there are |
| |
tries left. |
| |
|
| |
=item * B<INCORRECT>: |
| |
|
| |
The problem is open, and all tries have been used without getting the |
| |
correct answer. |
| |
|
| |
=item * B<OPEN>: |
| |
|
| |
The item is open and not yet tried. |
| |
|
| |
=item * B<ATTEMPTED>: |
| |
|
| |
The problem has been attempted. |
| |
|
| |
=item * B<ANSWER_SUBMITTED>: |
| |
|
| |
An answer has been submitted, but the student should not see it. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
sub TRIES_LEFT { return 20; } |
| |
sub ANSWER_SUBMITTED { return 21; } |
| |
|
| |
sub status { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
if (!defined($part)) { $part = "0"; } |
| |
my $completionStatus = $self->getCompletionStatus($part); |
| |
my $dateStatus = $self->getDateStatus($part); |
| |
|
| |
# What we have is a two-dimensional matrix with 4 entries on one |
| |
# dimension and 5 entries on the other, which we want to colorize, |
| |
# plus network failure and "no date data at all". |
| |
|
| |
#if ($self->{RESOURCE_ERROR}) { return NETWORK_FAILURE; } |
| |
if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; } |
| |
|
| |
my $suppressFeedback = $self->problemstatus($part) eq 'no'; |
| |
# If there's an answer date and we're past it, don't |
| |
# suppress the feedback; student should know |
| |
if ($self->answerdate($part) && $self->answerdate($part) < time()) { |
| |
$suppressFeedback = 0; |
| |
} |
| |
|
| |
# There are a few whole rows we can dispose of: |
| |
if ($completionStatus == CORRECT || |
| |
$completionStatus == CORRECT_BY_OVERRIDE ) { |
| |
return $suppressFeedback? ANSWER_SUBMITTED : CORRECT; |
| |
} |
| |
|
| |
if ($completionStatus == ATTEMPTED) { |
| |
return ATTEMPTED; |
| |
} |
| |
|
| |
# If it's EXCUSED, then return that no matter what |
| |
if ($completionStatus == EXCUSED) { |
| |
return EXCUSED; |
| |
} |
| |
|
| |
if ($dateStatus == NOTHING_SET) { |
| |
return NOTHING_SET; |
| |
} |
| |
|
| |
# Now we're down to a 4 (incorrect, incorrect_override, not_attempted) |
| |
# by 4 matrix (date statuses). |
| |
|
| |
if ($dateStatus == PAST_DUE_ANSWER_LATER || |
| |
$dateStatus == PAST_DUE_NO_ANSWER ) { |
| |
return $suppressFeedback ? ANSWER_SUBMITTED : $dateStatus; |
| |
} |
| |
|
| |
if ($dateStatus == ANSWER_OPEN) { |
| |
return ANSWER_OPEN; |
| |
} |
| |
|
| |
# Now: (incorrect, incorrect_override, not_attempted) x |
| |
# (open_later), (open) |
| |
|
| |
if ($dateStatus == OPEN_LATER) { |
| |
return OPEN_LATER; |
| |
} |
| |
|
| |
# If it's WRONG... |
| |
if ($completionStatus == INCORRECT || $completionStatus == INCORRECT_BY_OVERRIDE) { |
| |
# and there are TRIES LEFT: |
| |
if ($self->tries($part) < $self->maxtries($part) || !$self->maxtries($part)) { |
| |
return $suppressFeedback ? ANSWER_SUBMITTED : TRIES_LEFT; |
| |
} |
| |
return $suppressFeedback ? ANSWER_SUBMITTED : INCORRECT; # otherwise, return orange; student can't fix this |
| |
} |
| |
|
| |
# Otherwise, it's untried and open |
| |
return OPEN; |
| |
} |
| |
|
| |
sub CLOSED { return 23; } |
| |
sub ERROR { return 24; } |
| |
|
| |
=pod |
| |
|
| |
B<Simple Status> |
| |
|
| |
Convenience method B<simpleStatus> provides a "simple status" for the resource. |
| |
"Simple status" corresponds to "which icon is shown on the |
| |
Navmaps". There are six "simple" statuses: |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<CLOSED>: The problem is currently closed. (No icon shown.) |
| |
|
| |
=item * B<OPEN>: The problem is open and unattempted. |
| |
|
| |
=item * B<CORRECT>: The problem is correct for any reason. |
| |
|
| |
=item * B<INCORRECT>: The problem is incorrect and can still be |
| |
completed successfully. |
| |
|
| |
=item * B<ATTEMPTED>: The problem has been attempted, but the student |
| |
does not know if they are correct. (The ellipsis icon.) |
| |
|
| |
=item * B<ERROR>: There is an error retrieving information about this |
| |
problem. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
# This hash maps the composite status to this simple status, and |
| |
# can be used directly, if you like |
| |
my %compositeToSimple = |
| |
( |
| |
NETWORK_FAILURE() => ERROR, |
| |
NOTHING_SET() => CLOSED, |
| |
CORRECT() => CORRECT, |
| |
EXCUSED() => CORRECT, |
| |
PAST_DUE_NO_ANSWER() => INCORRECT, |
| |
PAST_DUE_ANSWER_LATER() => INCORRECT, |
| |
ANSWER_OPEN() => INCORRECT, |
| |
OPEN_LATER() => CLOSED, |
| |
TRIES_LEFT() => OPEN, |
| |
INCORRECT() => INCORRECT, |
| |
OPEN() => OPEN, |
| |
ATTEMPTED() => ATTEMPTED, |
| |
ANSWER_SUBMITTED() => ATTEMPTED |
| |
); |
| |
|
| |
sub simpleStatus { |
| |
my $self = shift; |
| |
my $part = shift; |
| |
my $status = $self->status($part); |
| |
return $compositeToSimple{$status}; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<simpleStatusCount> will return an array reference containing, in |
| |
this order, the number of OPEN, CLOSED, CORRECT, INCORRECT, ATTEMPTED, |
| |
and ERROR parts the given problem has. |
| |
|
| |
=cut |
| |
|
| |
# This maps the status to the slot we want to increment |
| |
my %statusToSlotMap = |
| |
( |
| |
OPEN() => 0, |
| |
CLOSED() => 1, |
| |
CORRECT() => 2, |
| |
INCORRECT() => 3, |
| |
ATTEMPTED() => 4, |
| |
ERROR() => 5 |
| |
); |
| |
|
| |
sub statusToSlot { return $statusToSlotMap{shift()}; } |
| |
|
| |
sub simpleStatusCount { |
| |
my $self = shift; |
| |
|
| |
my @counts = (0, 0, 0, 0, 0, 0, 0); |
| |
foreach my $part (@{$self->parts()}) { |
| |
$counts[$statusToSlotMap{$self->simpleStatus($part)}]++; |
| |
} |
| |
|
| |
return \@counts; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
B<Completable> |
| |
|
| |
The completable method represents the concept of I<whether the student can |
| |
currently do the problem>. If the student can do the problem, which means |
| |
that it is open, there are tries left, and if the problem is manually graded |
| |
or the grade is suppressed via problemstatus, the student has not tried it |
| |
yet, then the method returns 1. Otherwise, it returns 0, to indicate that |
| |
either the student has tried it and there is no feedback, or that for |
| |
some reason it is no longer completable (not open yet, successfully completed, |
| |
out of tries, etc.). As an example, this is used as the filter for the |
| |
"Uncompleted Homework" option for the nav maps. |
| |
|
| |
If this does not quite meet your needs, do not fiddle with it (unless you are |
| |
fixing it to better match the student's conception of "completable" because |
| |
it's broken somehow)... make a new method. |
| |
|
| |
=cut |
| |
|
| |
sub completable { |
| |
my $self = shift; |
| |
if (!$self->is_problem()) { return 0; } |
| |
my $partCount = $self->countParts(); |
| |
|
| |
foreach my $part (@{$self->parts()}) { |
| |
if ($part eq '0' && $partCount != 1) { next; } |
| |
my $status = $self->status($part); |
| |
# "If any of the parts are open, or have tries left (implies open), |
| |
# and it is not "attempted" (manually graded problem), it is |
| |
# not "complete" |
| |
if ($self->getCompletionStatus($part) == ATTEMPTED() || |
| |
$status == ANSWER_SUBMITTED() ) { |
| |
# did this part already, as well as we can |
| |
next; |
| |
} |
| |
if ($status == OPEN() || $status == TRIES_LEFT()) { |
| |
return 1; |
| |
} |
| |
} |
| |
|
| |
# If all the parts were complete, so was this problem. |
| |
return 0; |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=head2 Resource/Nav Map Navigation |
| |
|
| |
=over 4 |
| |
|
| |
=item * B<getNext>(): |
| |
|
| |
Retreive an array of the possible next resources after this |
| |
one. Always returns an array, even in the one- or zero-element case. |
| |
|
| |
=item * B<getPrevious>(): |
| |
|
| |
Retreive an array of the possible previous resources from this |
| |
one. Always returns an array, even in the one- or zero-element case. |
| |
|
| |
=cut |
| |
|
| |
sub getNext { |
| |
my $self = shift; |
| |
my @branches; |
| |
my $to = $self->to(); |
| |
foreach my $branch ( split(/,/, $to) ) { |
| |
my $choice = $self->{NAV_MAP}->getById($branch); |
| |
my $next = $choice->goesto(); |
| |
$next = $self->{NAV_MAP}->getById($next); |
| |
|
| |
push @branches, $next; |
| |
} |
| |
return \@branches; |
| |
} |
| |
|
| |
sub getPrevious { |
| |
my $self = shift; |
| |
my @branches; |
| |
my $from = $self->from(); |
| |
foreach my $branch ( split /,/, $from) { |
| |
my $choice = $self->{NAV_MAP}->getById($branch); |
| |
my $prev = $choice->comesfrom(); |
| |
$prev = $self->{NAV_MAP}->getById($prev); |
| |
|
| |
push @branches, $prev; |
| |
} |
| |
return \@branches; |
| |
} |
| |
|
| |
sub browsePriv { |
| |
my $self = shift; |
| |
if (defined($self->{BROWSE_PRIV})) { |
| |
return $self->{BROWSE_PRIV}; |
| |
} |
| |
|
| |
$self->{BROWSE_PRIV} = &Apache::lonnet::allowed('bre', $self->src()); |
| |
} |
| |
|
| |
=pod |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
1; |
| |
|
| |
__END__ |
| |
|
| |
|
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