Annotation of loncom/homework/structuretags.pm, revision 1.320

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.320   ! albertel    4: # $Id: structuretags.pm,v 1.319 2005/11/09 12:04:23 foxr Exp $
1.74      albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
1.254     www        28: ###
1.54      www        29: 
1.133     sakharuk   30: 
1.1       albertel   31: package Apache::structuretags; 
                     32: 
                     33: use strict;
                     34: use Apache::lonnet;
1.101     sakharuk   35: use Apache::File();
1.147     www        36: use Apache::lonmenu;
1.210     albertel   37: use Apache::lonlocal;
1.231     sakharuk   38: use Apache::lonxml;
1.267     albertel   39: use Time::HiRes qw( gettimeofday tv_interval );
1.78      harris41   40: BEGIN {
1.248     albertel   41:     &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
1.10      albertel   42: }
                     43: 
                     44: sub start_web {
1.159     albertel   45:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200     albertel   46:     my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
                     47:     if ($target eq 'web') {
                     48: 	return $bodytext;
1.159     albertel   49:     }
                     50:     return '';
1.10      albertel   51: }
                     52: 
                     53: sub end_web {
1.44      ng         54:     return '';
1.10      albertel   55: }
                     56: 
                     57: sub start_tex {
1.159     albertel   58:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198     sakharuk   59:     my $result='';
1.200     albertel   60:     my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
                     61:     if ($target eq 'tex') {
                     62: 	return $bodytext.' ';
1.159     albertel   63:     }
1.198     sakharuk   64:     return $result;;
1.10      albertel   65: }
                     66: 
                     67: sub end_tex {
1.44      ng         68:     return '';
1.9       albertel   69: }
                     70: 
1.290     albertel   71: sub body_tag_start {
                     72:     my ($target,$background,$bgcolor)=@_;
                     73:     my $body_tag_start='<body onload="'.&Apache::lonmenu::loadevents().'" '.
                     74: 	'onunload="'.&Apache::lonmenu::unloadevents().'" ';
                     75:     if ($env{'browser.imagesuppress'} eq 'on') { $background=''; }
                     76:     if ($background) {
1.306     albertel   77: 	&Apache::lonxml::extlink($background);
1.290     albertel   78: 	$body_tag_start.='background="'.$background.'" ';
                     79:     } else {
                     80: 	if (($bgcolor) && ($env{'browser.blackwhite'} ne 'on')) {
                     81: 	    $body_tag_start.='bgcolor="'.$bgcolor.'" ';
                     82: 	} else {
                     83: 	    $body_tag_start.='bgcolor="#ffffff"';
                     84: 	}
                     85:     }
                     86:     if ($env{'browser.fontenhance'} eq 'on') {
                     87: 	$body_tag_start.=' style="font-size: x-large;" ';
                     88:     }
                     89:     $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
1.297     albertel   90:     
                     91:     &Apache::lontexconvert::jsMath_reset();
1.290     albertel   92:     if ($env{'environment.texengine'} eq 'jsMath') {
1.297     albertel   93: 	$body_tag_start.=&Apache::lontexconvert::jsMath_header();
1.290     albertel   94:     }
                     95:     return $body_tag_start;
                     96: }
1.291     albertel   97: 
1.48      albertel   98: sub page_start {
1.159     albertel   99:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    100:     my %found;
1.207     albertel  101:     foreach my $taginside (@$tagstack) {
1.159     albertel  102: 	foreach my $taglookedfor ('html','body','form') {
                    103: 	    if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
                    104: 	}
                    105:     }
                    106: 
                    107:     my $result;
                    108:     my $head_tag_start;
                    109:     if (!defined($found{'html'})) {
                    110: 	$result=&Apache::londefdef::start_html($target,$token,$tagstack,
                    111: 					       $parstack,$parser,$safeeval);
1.254     www       112: 	$head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target).
1.261     www       113: 	    &Apache::lonhtmlcommon::htmlareaheaders().
1.270     albertel  114: 	    &Apache::lonhtmlcommon::spellheader().
                    115: 	    &Apache::lonxml::fontsettings();     
1.159     albertel  116:     }
                    117:     my $body_tag_start;
1.318     albertel  118:     if (!defined($found{'body'}) && $env{'request.state'} eq 'construct') {
                    119: 	if ($env{'environment.remote'} eq 'off') {
                    120: 	    if ($target eq 'web' || $target eq 'edit') {
                    121: 		$body_tag_start=&Apache::loncommon::bodytag();
                    122: 		$body_tag_start.=&Apache::lonxml::message_location();
                    123: 	    }
                    124: 	} else {
                    125: 	    if ($target eq 'web' || $target eq 'edit') {
                    126: 		$body_tag_start=&Apache::loncommon::bodytag(undef,undef,undef,1);
                    127: 		$body_tag_start.=&Apache::lonxml::message_location();
                    128: 	    }
1.297     albertel  129: 	}
1.272     albertel  130:     } elsif (!defined($found{'body'})) {
1.159     albertel  131: 	my $background=&Apache::lonxml::get_param('background',$parstack,
                    132: 						  $safeeval);
1.290     albertel  133: 	my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
                    134: 					       $safeeval);
1.299     albertel  135: 	$body_tag_start=&body_tag_start($target,$background,$bgcolor);
1.291     albertel  136: 	if ( ($target eq 'web' || $target eq 'webgrade')
                    137: 	     && $env{'request.state'} ne 'construct') {
1.165     albertel  138: 	    my ($symb,undef,undef,undef,$publicuser)=
                    139: 		&Apache::lonxml::whichuser();
                    140: 	    if ($symb eq '' && !$publicuser) {
1.159     albertel  141: 		my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
1.211     albertel  142: 		$help=&mt("Browsing resource, all submissions are temporary.")."<br />";
1.159     albertel  143: 		$body_tag_start.=$help;
                    144: 	    }
                    145: 	}
1.245     albertel  146: 	$body_tag_start.=&Apache::lonxml::message_location();
1.159     albertel  147:     }
                    148:     my $form_tag_start;
                    149:     if (!defined($found{'form'})) {
1.281     albertel  150: 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="POST" action="';
1.284     albertel  151: 	my $uri=$env{'request.uri'};
                    152: 	if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
1.271     albertel  153: 	$form_tag_start.=$uri.'">';
1.159     albertel  154:     }
                    155:     return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105     albertel  156: }
                    157: 
1.141     matthew   158: #use Time::HiRes();
1.105     albertel  159: sub get_resource_name {
1.159     albertel  160:     my ($parstack,$safeeval)=@_;
1.204     albertel  161:     if (defined($Apache::lonhomework::name)) {
                    162: 	return $Apache::lonhomework::name;
                    163:     }
1.279     albertel  164:     my ($symb)=&Apache::lonxml::whichuser();
                    165:     my $name=&Apache::lonnet::gettitle($symb);
1.159     albertel  166:     if ($name eq '') {
                    167: 	$name=&Apache::lonnet::EXT('resource.title');
                    168: 	if ($name eq 'con_lost') { $name = ''; }
                    169:     }
1.204     albertel  170:     if ($name!~/\S+/) {
1.284     albertel  171: 	$name=$env{'request.uri'};
1.205     albertel  172: 	$name=~s-.*/([^/]+)$-$1-;
1.204     albertel  173:     }
1.159     albertel  174:     $Apache::lonhomework::name=$name;
                    175:     return $name;
1.105     albertel  176: }
                    177: 
                    178: sub setup_rndseed {
1.159     albertel  179:     my ($safeeval)=@_;
                    180:     my $rndseed;
1.162     albertel  181:     my ($symb)=&Apache::lonxml::whichuser();
1.284     albertel  182:     if ($env{'request.state'} eq "construct" || $symb eq '' ||
1.247     albertel  183:           $Apache::lonhomework::history{'resource.CODE'}) {
1.316     www       184: 	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317     albertel  185: 						['rndseed']);
1.284     albertel  186: 	$rndseed=$env{'form.rndseed'};
1.159     albertel  187: 	if (!$rndseed) {
1.162     albertel  188: 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
                    189: 	    if (!$rndseed) {
                    190: 		$rndseed=time;
                    191: 	    }
1.284     albertel  192: 	    $env{'form.rndseed'}=$rndseed;
1.162     albertel  193: 	}
1.284     albertel  194: 	if ($env{'form.resetdata'} eq &mt('New Problem Variation') ||
                    195: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190     albertel  196: 	    srand(time);
                    197: 	    $rndseed=int(rand(2100000000));
1.284     albertel  198: 	    $env{'form.rndseed'}=$rndseed;
                    199: 	    delete($env{'form.resetdata'});
                    200: 	    delete($env{'form.newrandomization'});
1.159     albertel  201: 	}
1.187     albertel  202: 	if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307     albertel  203: 	    $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187     albertel  204:         }
1.247     albertel  205:         if ($Apache::lonhomework::history{'resource.CODE'}) {
                    206: 	   $rndseed=&Apache::lonnet::rndseed();
                    207: 	}
1.221     albertel  208: 	if ($safeeval) {
                    209: 	    &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250     albertel  210: 	    &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221     albertel  211: 	}
1.159     albertel  212:     }
                    213:     return $rndseed;
1.105     albertel  214: }
                    215: 
1.268     albertel  216: sub remember_problem_state {
                    217:     return '
1.284     albertel  218:        <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
                    219:        <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
                    220:        <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268     albertel  221: }
                    222: 
1.105     albertel  223: sub problem_edit_header {
1.268     albertel  224:     return '<input type="hidden" name="submitted" value="edit" />'.
                    225: 	&Apache::structuretags::remember_problem_state().'
1.210     albertel  226:        <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243     matthew   227:        <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
                    228:        <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
                    229:        <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
                    230:        <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
                    231:        <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.260     albertel  232:        &Apache::loncommon::help_open_menu('','Problem Editing Help','Problem_Editor_XML_Index','',5,'Authoring',undef,undef,undef,'Problem Editing Help')
                    233:        .'</td></tr></table>'.
1.282     albertel  234:        '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105     albertel  235: }
                    236: 
                    237: sub problem_edit_footer {
1.210     albertel  238:     return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255     www       239:     <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
                    240:     &Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields).
1.280     albertel  241:     "\n</form>\n".&Apache::loncommon::endbodytag()."\n</html>";
1.105     albertel  242: }
                    243: 
1.235     albertel  244: sub option {
                    245:     my ($value,$name) = @_;
                    246:     my $result ="<option value='".$value."' ";
1.284     albertel  247:     if ($env{'form.'.$name} eq $value) {
1.235     albertel  248: 	$result.=" selected='on' ";
                    249:     }
                    250:     $result.='>';
                    251:     return $result;
                    252: }
                    253: 
1.105     albertel  254: sub problem_web_to_edit_header {
1.159     albertel  255:     my ($rndseed)=@_;
1.313     albertel  256:     my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
                    257:     if (!$Apache::lonhomework::parsing_a_task) {
                    258: 	$result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
                    259:     }
                    260:     $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243     matthew   261:              <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
                    262:              <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210     albertel  263:              <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270     albertel  264:               <input type="text" name="rndseed" size="10" value="'.
1.175     albertel  265: 	       $rndseed.'"
1.270     albertel  266:            onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.281     albertel  267:              <label><input type="checkbox" name="showallfoils" ';
1.315     albertel  268:     my $show_all_foils_text = 
                    269: 	($Apache::lonhomework::parsing_a_task) ?
                    270: 	&mt('&nbsp;Show&nbsp;All&nbsp;Instances')
                    271: 	: &mt('&nbsp;Show&nbsp;All&nbsp;Foils');
                    272: 
1.284     albertel  273:     if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.315     albertel  274:     $result.= ' />'.$show_all_foils_text.
1.228     www       275: 	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.281     albertel  276: 	'</label><hr />';
1.313     albertel  277:     if (!$Apache::lonhomework::parsing_a_task) {
                    278: 	$result.="
1.235     albertel  279: <nobr>
                    280: Problem Status:
                    281: <select name='problemstate'>
1.270     albertel  282:   <option value=''></option>
1.235     albertel  283:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    284:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    285:   ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
                    286:   ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
                    287:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
                    288: </select>
                    289: </nobr>
                    290: <nobr>
                    291: Problem Type:
                    292: <select name='problemtype'>
1.270     albertel  293:   <option value=''></option>
1.242     albertel  294:   ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
                    295:   ".&option('problem','problemtype').&mt("Homework problem")."</option>
                    296:   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235     albertel  297: </select>
                    298: </nobr>
                    299: <nobr>
                    300: Feedback Mode:
                    301: <select name='problemstatus'>
                    302:   <option value=''></option>
1.242     albertel  303:   ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
                    304:   ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235     albertel  305: </select>
                    306: </nobr>
1.242     albertel  307: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235     albertel  308: <hr />";
1.313     albertel  309: 	my $numtoanalyze=$env{'form.numtoanalyze'};
                    310: 	if (!$numtoanalyze) { $numtoanalyze=20; }
                    311: 	$result.= '<input type="submit" name="problemmode" value='.
                    312: 	    &mt('"Calculate answers').'" /> for
1.136     albertel  313:              <input type="text" name="numtoanalyze" value="'.
1.210     albertel  314: 	     $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
                    315: 	     '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176     albertel  316: 						     '',undef,undef,300).
1.210     albertel  317: 						     '<hr />';
1.313     albertel  318:     }
1.159     albertel  319:     return $result;
1.48      albertel  320: }
                    321: 
1.65      albertel  322: sub initialize_storage {
1.159     albertel  323:     %Apache::lonhomework::results=();
1.162     albertel  324:     %Apache::lonhomework::history=();
1.159     albertel  325:     my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.284     albertel  326:     if ($env{'request.state'} eq 'construct' || $symb eq '') {
1.159     albertel  327: 	%Apache::lonhomework::history=
1.284     albertel  328: 	    &Apache::lonnet::tmprestore($env{'request.uri'},'',$domain,$name);
1.159     albertel  329: 	my ($temp)=keys %Apache::lonhomework::history ;
                    330: 	&Apache::lonxml::debug("Return message of $temp");
                    331:     } else {
                    332: 	%Apache::lonhomework::history=
                    333: 	    &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                    334:     }
                    335:     #ignore error conditions
1.67      albertel  336:     my ($temp)=keys %Apache::lonhomework::history ;
1.159     albertel  337:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65      albertel  338: }
                    339: 
                    340: # -------------------------------------------------------------finalize_storage
                    341: # Stores away the result has to a student's environment
                    342: # checks form.grade_ for specific values, other wises stores
                    343: # to the running users environment
1.285     raeburn   344: # Will increment totals for attempts, students, and corrects
                    345: # if running user has student role.  
1.65      albertel  346: sub finalize_storage {
1.159     albertel  347:     my $result;
1.289     albertel  348:     if (%Apache::lonhomework::results) {
1.159     albertel  349: 	my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.284     albertel  350: 	if ($env{'request.state'} eq 'construct' || $symb eq '') {
                    351: 	    $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159     albertel  352: 	    $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.284     albertel  353: 					$env{'request.uri'},'',$domain,$name);
1.159     albertel  354: 	    &Apache::lonxml::debug('Construct Store return message:'.$result);
                    355: 	} else {
                    356: 	    $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
                    357: 					    $symb,$courseid,$domain,$name);
                    358: 	    &Apache::lonxml::debug('Store return message:'.$result);
1.285     raeburn   359:             if ($env{'request.role'} =~/^st/) {
                    360:                 &store_aggregates($symb,$courseid);
                    361:             }
1.159     albertel  362: 	}
1.67      albertel  363:     }
1.159     albertel  364:     return $result;
1.65      albertel  365: }
1.289     albertel  366: use Data::Dumper;
1.65      albertel  367: 
1.285     raeburn   368: # -------------------------------------------------------------store_aggregates
                    369: # Sends hash of values to be incremented in nohist_resourcetracker.db
                    370: # for the course. Increments total number of attempts, unique students 
                    371: # and corrects for each part for an instance of a problem, as appropriate.
                    372: sub store_aggregates {
                    373:     my ($symb,$courseid) = @_;
1.286     albertel  374:     my %aggregate;
                    375:     my @parts;
1.288     albertel  376:     my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
                    377:     my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286     albertel  378:     foreach my $key (keys(%Apache::lonhomework::results)) {
1.287     albertel  379:         if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286     albertel  380:             push(@parts, $1);
1.285     raeburn   381:         }
                    382:     }
1.286     albertel  383:     foreach my $part (@parts) {
                    384:         if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
                    385: 	    eq 'APPROX_ANS' ||
                    386: 	    $Apache::lonhomework::results{'resource.'.$part.'.award'}
                    387: 	    eq 'EXACT_ANS') {
1.287     albertel  388:             $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285     raeburn   389:         }
1.286     albertel  390:         if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287     albertel  391:             $aggregate{$symb."\0".$part."\0users"} = 1;
1.292     raeburn   392:         } else {
1.293     albertel  393:             my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]); 
1.292     raeburn   394:             if ($last_reset) {
1.293     albertel  395:                 if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292     raeburn   396:                     $aggregate{$symb."\0".$part."\0users"} = 1;
                    397:                 }
                    398:             }
1.285     raeburn   399:         }
1.287     albertel  400:         $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285     raeburn   401:     }
1.292     raeburn   402:     if (keys (%aggregate) > 0) {
1.289     albertel  403: 	&Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292     raeburn   404:                             $cdomain,$cname);
                    405:     }
                    406: }
1.289     albertel  407: 
1.65      albertel  408: sub checkout_msg {
1.211     albertel  409:     my %lt=&Apache::lonlocal::texthash( 
                    410: 		'resource'=>'The resource needs to be checked out',
                    411: 		'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
                    412:                 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
                    413:                 'checkout'=>'Check out Exam for Viewing',
                    414: 		'checkout?'=>'Check out Exam?');
1.159     albertel  415:     return (<<ENDCHECKOUT);
1.211     albertel  416: <h2>$lt{'resource'}</h2>
                    417:     <p>$lt{'id_expln'}</p>
                    418: <font color="red">
                    419: <p>$lt{'warning'}</p>
1.91      albertel  420: </font>
1.284     albertel  421: <form name="checkout" method="POST" action="$env{'request.uri'}">
1.91      albertel  422: <input type="hidden" name="doescheckout" value="yes" />
1.211     albertel  423: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel  424: </form>
                    425: ENDCHECKOUT
                    426: }
                    427: 
1.252     albertel  428: sub firstaccess_msg {
1.253     albertel  429:     my ($time,$symb)=@_;
                    430:     my ($map)=&Apache::lonnet::decode_symb($symb);
                    431:     my $foldertitle=&Apache::lonnet::gettitle($map);
                    432:     &Apache::lonxml::debug("map is $map title is $foldertitle");
1.252     albertel  433:     return (<<ENDCHECKOUT);
1.253     albertel  434: <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
1.284     albertel  435: <form name="markaccess" method="POST" action="$env{'request.uri'}">
1.252     albertel  436: <input type="hidden" name="markaccess" value="yes" />
                    437: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
                    438: </form>
                    439: ENDCHECKOUT
                    440: }
                    441: 
1.204     albertel  442: sub init_problem_globals {
                    443:     my ($type)=@_;
                    444:     #initialize globals
1.308     foxr      445:     #   For problems, we start out in part 0 (outside a <part> tag).
                    446:     #   and part 0 is used to describe the main body of the <problem>
                    447:     #
1.204     albertel  448:     if ($type eq 'problem') {
                    449: 	$Apache::inputtags::part='0';
                    450: 	@Apache::inputtags::partlist=('0');
1.266     albertel  451: 	$Apache::lonhomework::problemstatus=&get_problem_status('0');
                    452: 	$Apache::lonhomework::ignore_response_errors=0;
1.308     foxr      453: 
1.266     albertel  454:     } elsif ($type eq 'library') {
1.204     albertel  455: 	$Apache::inputtags::part='';
                    456: 	@Apache::inputtags::partlist=();
                    457: 	$Apache::lonhomework::problemstatus='';	
1.266     albertel  458: 	$Apache::lonhomework::ignore_response_errors=1;
1.308     foxr      459: 
1.304     albertel  460:     } elsif ($type eq 'Task') {
                    461: 	$Apache::inputtags::part='0';
                    462: 	@Apache::inputtags::partlist=('0');
                    463: 	$Apache::lonhomework::problemstatus='';	
                    464: 	$Apache::lonhomework::ignore_response_errors=1;
1.204     albertel  465:     }
                    466:     @Apache::inputtags::responselist = ();
                    467:     @Apache::inputtags::importlist = ();
                    468:     @Apache::inputtags::previous=();
                    469:     @Apache::inputtags::previous_version=();
                    470:     $Apache::structuretags::printanswer='No';
                    471:     @Apache::structuretags::whileconds=();
                    472:     @Apache::structuretags::whilebody=();
                    473:     @Apache::structuretags::whileline=();
                    474:     $Apache::lonhomework::scantronmode=0;
                    475:     undef($Apache::lonhomework::name);
                    476: 
                    477: }
                    478: 
                    479: sub reset_problem_globals {
                    480:     my ($type)=@_;
                    481:     undef(%Apache::lonhomework::history);
                    482:     undef(%Apache::lonhomework::results);
                    483:     undef($Apache::inputtags::part);
1.208     albertel  484: #don't undef this, lonhomework.pm takes care of this, we use this to 
                    485: #detect if we try to do 2 problems in one file
                    486: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel  487:     undef($Apache::lonhomework::name);
                    488: }
                    489: 
1.241     albertel  490: sub set_problem_state {
1.240     albertel  491:     my ($part)=@_;
1.284     albertel  492:     if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240     albertel  493: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                    494: 	    'correct_by_student';
                    495:     }
                    496: }
                    497: 
1.241     albertel  498: sub get_problem_status {
                    499:     my ($part)=@_;
1.267     albertel  500:     my $problem_status;
1.284     albertel  501:     if ($env{'request.state'} eq 'construct' &&
                    502: 	defined($env{'form.problemstatus'})) {
                    503: 	$problem_status=$env{'form.problemstatus'};
1.267     albertel  504:     } else {
                    505: 	$problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                    506: 	&Apache::lonxml::debug("problem status for $part is $problem_status");
1.284     albertel  507: 	&Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241     albertel  508:     }
                    509:     return $problem_status;
                    510: }
                    511: 
1.9       albertel  512: sub start_problem {
1.159     albertel  513:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19      albertel  514: 
1.311     foxr      515:     # We'll use the redirection to fix up printing of duedates.
1.312     albertel  516:     &Apache::lonxml::startredirection();
1.311     foxr      517: 
1.308     foxr      518:     # Problems don't nest and we don't allow more than one <problem> in
                    519:     # a .problem file.
                    520:     #
1.184     albertel  521:     if ( $Apache::inputtags::part ne '' ||
                    522: 	 $Apache::lonhomework::parsing_a_problem) {
                    523: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
                    524: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159     albertel  525: 	return '';
                    526:     }
1.184     albertel  527: 
                    528:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel  529:     &init_problem_globals('problem');
1.166     albertel  530: 
1.284     albertel  531:     if (defined($env{'scantron.maxquest'})) {
1.166     albertel  532: 	$Apache::lonhomework::scantronmode=1;
                    533:     }
1.161     albertel  534: 
1.246     albertel  535:     &initialize_storage();
1.159     albertel  536:     if ($target ne 'analyze') {
                    537: 	if ($target eq 'web') {
                    538: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238     albertel  539: 	}
1.284     albertel  540:        	if ($env{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159     albertel  541: 	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284     albertel  542: 	if (($env{'request.state'} eq 'construct') &&
                    543: 	    defined($env{'form.problemtype'})) {
                    544: 	    $Apache::lonhomework::type=$env{'form.problemtype'};
1.237     albertel  545: 	}
1.240     albertel  546: 	&Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159     albertel  547:     }
1.164     albertel  548:     if ($Apache::lonhomework::type eq '' ) {
1.284     albertel  549: 	my $uri=$env{'request.uri'};
1.159     albertel  550: 	if ($uri=~/\.(\w+)$/) {
                    551: 	    $Apache::lonhomework::type=$1;
                    552: 	    &Apache::lonxml::debug("Using type of $1");
                    553: 	} else {
                    554: 	    $Apache::lonhomework::type='problem';
                    555: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                    556: 	}
1.87      albertel  557:     }
1.301     albertel  558:     $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58      www       559: 
1.159     albertel  560:     #added vars to the scripting enviroment
1.213     albertel  561:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248     albertel  562:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel  563:     &Apache::run::run($expression,$safeeval);
1.159     albertel  564:     my $status;
                    565:     my $accessmsg;
                    566: 
                    567:     #should get back a <html> or the neccesary stuff to start XML/MathML
                    568:     my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    569: 	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.284     albertel  570:     if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159     albertel  571: 
                    572:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
                    573:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    574: 	$target eq 'tex') {
                    575: 	#handle exam checkout
                    576: 	if ($Apache::lonhomework::type eq 'exam') {
                    577: 	    my $token=
                    578: 		$Apache::lonhomework::history{"resource.0.outtoken"};
1.284     albertel  579: 	    if (($env{'form.doescheckout'}) && (!$token)) {
1.159     albertel  580: 		$token=&Apache::lonxml::maketoken();
                    581: 		$Apache::lonhomework::history{"resource.0.outtoken"}=
                    582: 		    $token;
                    583: 	    }
                    584: 	    $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142     albertel  585: 	}
1.284     albertel  586: 	if ($env{'form.markaccess'}) {
1.252     albertel  587: 	    &Apache::lonnet::set_first_access('map');
                    588: 	}
1.159     albertel  589: 	#handle rand seed in construction space
                    590: 	my $rndseed=&setup_rndseed($safeeval);
1.162     albertel  591: 	my ($symb)=&Apache::lonxml::whichuser();
1.284     albertel  592: 	if ($env{'request.state'} ne "construct" && $symb eq '') {
1.162     albertel  593: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
                    594: 		$rndseed.'" />'.
                    595: 		    '<input type="submit" name="resetdata"
1.211     albertel  596:                              value="'.&mt('New Problem Variation').'" />'.
1.164     albertel  597: 		    '<input type="hidden" name="username"
1.284     albertel  598:                              value="'.$env{'form.username'}.'" />';
                    599: 	    if ($env{'user.adv'}) {
1.267     albertel  600: 		$form_tag_start.=
1.300     albertel  601: 		    ' <label><input type="checkbox" name="showallfoils" ';
1.284     albertel  602: 		if (defined($env{'form.showallfoils'})) {
1.267     albertel  603: 		    $form_tag_start.='checked="on"';
                    604: 		}
1.300     albertel  605: 		$form_tag_start.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').
                    606: 		    '</label>';
1.267     albertel  607: 	    }
                    608: 	    $form_tag_start.='<hr />';
1.162     albertel  609: 	}
1.159     albertel  610: 	($status,$accessmsg) = &Apache::lonhomework::check_access('0');
                    611: 	push (@Apache::inputtags::status,$status);
                    612: 	my $expression='$external::datestatus="'.$status.'";';
                    613: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                    614: 	&Apache::run::run($expression,$safeeval);
                    615: 	&Apache::lonxml::debug("Got $status");
                    616: 	if (( $status eq 'CLOSED' ) ||
                    617: 	    ( $status eq 'UNCHECKEDOUT') ||
1.252     albertel  618: 	    ( $status eq 'NOT_YET_VIEWED') ||
1.159     albertel  619: 	    ( $status eq 'BANNED') ||
1.216     albertel  620: 	    ( $status eq 'UNAVAILABLE') ||
                    621: 	    ( $status eq 'INVALID_ACCESS')) {
1.159     albertel  622: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
                    623: 	    if ( $target eq "web" ) {
                    624: 		$result.= $head_tag_start.'</head>';
                    625: 		my $msg=$body_tag_start;
                    626: 		if ($status eq 'UNAVAILABLE') {
1.245     albertel  627: 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253     albertel  628: 		} elsif ($status ne 'NOT_YET_VIEWED') {
1.245     albertel  629: 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159     albertel  630: 		}
1.216     albertel  631: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159     albertel  632: 		    $msg.='The problem '.$accessmsg;
                    633: 		} elsif ($status eq 'UNCHECKEDOUT') {
                    634: 		    $msg.=&checkout_msg;
1.252     albertel  635: 		} elsif ($status eq 'NOT_YET_VIEWED') {
1.253     albertel  636: 		    $msg.=&firstaccess_msg($accessmsg,$symb);
1.159     albertel  637: 		}
                    638: 		$result.=$msg.'<br />';
                    639: 	    } elsif ($target eq 'tex') {
                    640: 		$result.='\begin{document}\noindent \vskip 1 mm  \begin{minipage}{\textwidth}\vskip 0 mm';
                    641: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel  642: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel  643: 		} else {
1.211     albertel  644: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel  645: 		}
                    646: 	    }
                    647: 	} elsif ($target eq 'web') {
                    648: 	    my $name= &get_resource_name($parstack,$safeeval);
1.227     albertel  649: 	    $result.="$head_tag_start<title>$name</title></head>
1.158     sakharuk  650:               $body_tag_start \n $form_tag_start".	
1.227     albertel  651: 	      '<input type="hidden" name="submitted" value="yes" />';
                    652: 	    # create a page header and exit
1.284     albertel  653: 	    if ($env{'request.state'} eq "construct") {
                    654: 		$result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227     albertel  655: 	    }
                    656: 	    # if we are viewing someone else preserve that info
1.284     albertel  657: 	    if (defined $env{'form.grade_symb'}) {
1.227     albertel  658: 		foreach my $field ('symb','courseid','domain','username') {
                    659: 		    $result .= '<input type="hidden" name="grade_'.$field.
1.284     albertel  660: 			'" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159     albertel  661: 		}
                    662: 	    }
                    663: 	} elsif ($target eq 'tex') {
1.319     foxr      664: 	    $result .= 'INSERTTEXFRONTMATTERHERE';
                    665: 
1.99      sakharuk  666: 	}
1.159     albertel  667:     } elsif ($target eq 'edit') {
                    668: 	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
                    669: 	    &problem_edit_header();
1.226     albertel  670: 	$Apache::lonxml::warnings_error_header=
                    671: 	    &mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
1.159     albertel  672: 	my $temp=&Apache::edit::insertlist($target,$token);
                    673: 	$result.=$temp;
                    674:     } elsif ($target eq 'modified') {
                    675: 	$result=$token->[4];
                    676: 	$result.=&Apache::edit::handle_insert();
                    677:     } else {
                    678: 	# page_start returned a starting result, delete it if we don't need it
                    679: 	$result = '';
1.99      sakharuk  680:     }
1.159     albertel  681:     return $result;
1.9       albertel  682: }
                    683: 
                    684: sub end_problem {
1.159     albertel  685:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.312     albertel  686:     my $result= &Apache::lonxml::endredirection(); # started in &start_problem
1.310     foxr      687: 
1.319     foxr      688:     # Figure out the front matter which was too deeply coupled for me to easily
                    689:     # unravel and replace the INSERTTEXFRONTMATTERHERE in result with it.
                    690:     # note that we do this in end_problem because whether or not we display
                    691:     # due dates depends on whether due dates have already been displayed in the problem parts.
                    692: 
                    693:     if ($target eq 'tex') {
                    694: 	my $frontmatter   = '';
                    695: 	my $startminipage = '';
                    696: 	if (not $env{'form.problem_split'}=~/yes/) {
                    697: 	    $startminipage = '\begin{minipage}{\textwidth}';
                    698: 	}
                    699: 	my $id = $Apache::inputtags::part;
                    700: 	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
                    701: 	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
                    702: 	my @packages = split /,/,$packages;
                    703: 	my $allow_print_points = 0;
                    704: 	foreach my $partial_key (@packages) {
                    705: 	    if ($partial_key=~m/^part_0$/) {
                    706: 		$allow_print_points=1;
                    707: 	    }
                    708: 	}
                    709: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                    710: 	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
                    711: 	if (lc($env{'course.'.$env{'request.course.id'}.
                    712: 			'.disableexampointprint'}) eq 'yes') {
                    713: 	    $allow_print_points=0;
                    714: 	}
                    715: 	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
                    716: 	my $begin_doc='\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
                    717: 	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
                    718: 	    '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
                    719: 	
                    720: 	#  Figure out what the due date is and if we need to print
                    721: 	#  it in the problem header.  We have been logging the
                    722: 	#  last due date written to file. 
                    723: 	
                    724: 	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate"); 
                    725: 	my $duedate = POSIX::strftime("%c",localtime($duetime));
                    726: 	my $temp_file;
                    727: 	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
                    728: 	
                    729: 	# Figure out what the last printed due date is or set it
                    730: 	# to the epoch if no duedates have been printed.
                    731: 	
                    732: 	my $due_file_content = 0;      #   If the file does not yet exist, time is the epoch.
                    733: 	if (-e $filename) {
                    734: 	    $temp_file = Apache::File->new($filename);
                    735: 	    my @due_file      = <$temp_file>;
                    736: 	    $due_file_content = $due_file[$#due_file];
                    737: 	    chomp $due_file_content;
                    738: 	} 
                    739: 	
                    740: 	# We display the due date iff it is not the same as the last
                    741: 	# duedate in problem header ($due_file_content), and
                    742: 	# none of our parts displayed a duedate.
                    743: 	#
                    744: 	my $parts_with_displayduedate;
                    745: 	if (defined $Apache::outputtags::showonce{'displayduedate'}) {
                    746: 	    $parts_with_displayduedate = 
                    747: 		scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
                    748: 	} else {
                    749: 	    $parts_with_displayduedate = 0;
                    750: 	}
                    751: 	if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
                    752: 	    $temp_file = Apache::File->new('>'.$filename);
                    753: 	    print $temp_file "$duetime\n";
                    754: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    755: 		if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
                    756: 		    $frontmatter .= $begin_doc.
                    757: 			'\textit{Due date: '.$duedate.'} '.$toc_line;
                    758: 		} else {
                    759: 		    $frontmatter.= $begin_doc.$toc_line;
                    760: 		    if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    761: 		}
                    762: 	    } else {
                    763: 		$frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
                    764: 	    }
                    765: 	} else {
                    766: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    767: 		$frontmatter .= $begin_doc.$toc_line;
                    768: 		if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    769: 	    } else {
                    770: 		$frontmatter .= '\vskip 1mm \\\\\\\\';
                    771: 	    }
                    772: 	}
                    773: 	$result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
                    774:     }
                    775: 
1.159     albertel  776:     my $status=$Apache::inputtags::status['-1'];
                    777:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    778: 	$target eq 'tex') {
1.249     albertel  779: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159     albertel  780: 	    # if part is zero, no <part>s existed, so we need to the grading
1.249     albertel  781: 	    if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
                    782: 		&Apache::inputtags::grade;
                    783: 	    } else {
                    784: 		# move any submission data to .hidden
                    785: 		&Apache::inputtags::hidealldata($Apache::inputtags::part);
                    786: 	    }
1.159     albertel  787: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                    788: 		  $Apache::inputtags::part eq '0' &&
1.252     albertel  789: 		  $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159     albertel  790: 	    # if part is zero, no <part>s existed, so we need show the current
                    791: 	    # grading status
                    792: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                    793: 	    $result.= $gradestatus;
                    794: 	}
                    795: 	if (
1.284     albertel  796: 	    (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159     albertel  797: 	    ($target eq 'answer') || ($target eq 'tex')
                    798: 	   ) {
1.227     albertel  799: 	    if ($target ne 'tex' &&
1.284     albertel  800: 		$env{'form.answer_output_mode'} ne 'tex') {
1.254     www       801: 		$result.="</form>";
                    802: 		$result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);
1.159     albertel  803: 	    }
                    804: 	    if ($target eq 'web') {
1.281     albertel  805: 		$result.=&Apache::lonxml::xmlend().'</html>';
1.159     albertel  806: 	    } elsif ($target eq 'tex') {
1.178     sakharuk  807: 		my $endminipage = '';
1.284     albertel  808: 		if (not $env{'form.problem_split'}=~/yes/) {
1.178     sakharuk  809: 		    $endminipage = '\end{minipage}';
                    810: 		}
1.284     albertel  811:                 if ($env{'form.print_discussions'} eq 'yes') {
1.263     sakharuk  812: 		    $result.=&Apache::lonxml::xmlend($target,$parser);
1.257     sakharuk  813: 		    $result=~s/<\/html>//;
1.159     albertel  814: 		} else {
1.262     sakharuk  815: 		    $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284     albertel  816: 		    if (not $env{'request.symb'} =~ m/\.page_/) {
1.262     sakharuk  817: 			$result .= $endminipage.'\end{document} ';
                    818: 		    } else {
                    819: 			$result .= '';
                    820: 		    }
1.159     albertel  821: 		}
                    822: 	    }
                    823: 	}
                    824: 	if ($target eq 'grade') {
                    825: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                    826: 	    &finalize_storage();
                    827: 	}
1.284     albertel  828: 	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
                    829: 	    && $env{'form.answer_output_mode'} ne 'tex') {
1.294     albertel  830: 	    $result.=&Apache::lonxml::xmlend().'</html>';
                    831: 	                        # normally we get it from above, but in CSTR
1.172     albertel  832: 	                        # we always show answer mode too.
1.159     albertel  833: 	}
                    834:     } elsif ($target eq 'meta') {
                    835: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel  836: 	    @Apache::inputtags::response=();
1.159     albertel  837: 	    $result=&Apache::response::mandatory_part_meta;
                    838: 	}
1.215     albertel  839: 	$result.=&Apache::response::meta_part_order();
1.258     albertel  840: 	$result.=&Apache::response::meta_response_order();
1.159     albertel  841:     } elsif ($target eq 'edit') {
                    842: 	&Apache::lonxml::debug("in end_problem with $target, edit");
1.314     albertel  843: 	$result .= &problem_edit_footer();
1.320   ! albertel  844:     } elsif ($target eq 'modified') {
        !           845: 	 $result .= $token->[2];
        !           846: 	 $result.=&Apache::edit::handle_insertafter($token->[1]);
1.159     albertel  847:     }
1.155     albertel  848: 
1.284     albertel  849:     if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177     albertel  850: 	&Apache::inputtags::check_for_duplicate_ids();
                    851:     }
1.204     albertel  852: 
                    853:     &reset_problem_globals('problem');
1.159     albertel  854: 
                    855:     return $result;
1.48      albertel  856: }
                    857: 
1.108     albertel  858: 
1.48      albertel  859: sub start_library {
1.159     albertel  860:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    861:     my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244     albertel  862:     if ($$tagstack[0] eq 'library') {
                    863: 	&init_problem_globals('library');
                    864: 	$Apache::lonhomework::type='problem';
                    865:     }
1.159     albertel  866:     if ($target eq 'edit') {
                    867: 	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    868: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    869: 	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
                    870: 	    &problem_edit_header();
                    871: 	my $temp=&Apache::edit::insertlist($target,$token);
                    872: 	$result.=$temp;
                    873:     } elsif ($target eq 'modified') {
                    874: 	$result=$token->[4];
                    875: 	$result.=&Apache::edit::handle_insert();
                    876:     } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
1.284     albertel  877: 	     $env{'request.state'} eq "construct" ) {
1.159     albertel  878: 	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    879: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    880: 	my $name=&get_resource_name($parstack,$safeeval);
                    881: 	my $rndseed=&setup_rndseed($safeeval);
                    882: 	$result.="$head_tag_start<title>$name</title></head>
1.105     albertel  883:               $body_tag_start \n $form_tag_start".	
1.159     albertel  884: 		  '<input type="hidden" name="submitted" value="yes" />';
                    885: 	$result.=&problem_web_to_edit_header($rndseed);
                    886:     }
                    887:     return $result;
1.48      albertel  888: }
                    889: 
                    890: sub end_library {
1.159     albertel  891:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    892:     my $result='';
                    893:     if ($target eq 'edit') {
                    894: 	$result=&problem_edit_footer();
                    895:     } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
1.284     albertel  896: 	     $env{'request.state'} eq "construct") {
1.280     albertel  897: 	$result.='</form>'.&Apache::loncommon::endbodytag().
                    898: 	    &Apache::lonxml::xmlend();
1.159     albertel  899:     }
1.204     albertel  900:     if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159     albertel  901:     return $result;
1.197     www       902: }
                    903: 
                    904: sub start_definetag {
                    905:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    906: 
                    907:     my $result;
                    908: 
                    909:     my $name = $token->[2]->{'name'};
                    910:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
                    911:     if ($name=~/^\//) {
                    912: 	$result=
                    913:  '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
                    914:     } else {
                    915: 	$result=
                    916:  '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
                    917:     }
                    918:     $skip=~s/\</\&lt\;/gs;
                    919:     $skip=~s/\>/\&gt\;/gs;
                    920:     $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
                    921:     return $result;
                    922: }
                    923: 
                    924: sub end_definetag {
                    925:     return '';
1.1       albertel  926: }
                    927: 
                    928: sub start_block {
1.201     albertel  929:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel  930: 
                    931:     my $result;
1.1       albertel  932: 
1.160     albertel  933:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131     albertel  934: 	$target eq 'tex' || $target eq 'analyze') {
1.159     albertel  935: 	my $code = $token->[2]->{'condition'};
1.201     albertel  936: 	if (defined($code)) {
1.137     albertel  937: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    938: 		&Apache::lonxml::default_homework_load($safeeval);
                    939: 	    }
1.131     albertel  940: 	    $result = &Apache::run::run($code,$safeeval);
                    941: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                    942: 	} else {
                    943: 	    $result='1';
                    944: 	}
                    945: 	if ( ! $result ) {
1.201     albertel  946: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel  947: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    948: 	}
                    949: 	$result='';
                    950:     } elsif ($target eq 'edit') {
                    951: 	$result .=&Apache::edit::tag_start($target,$token);
                    952: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                    953: 					  $token,40);
                    954: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    955:     } elsif ($target eq 'modified') {
                    956: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    957: 						     $safeeval,'condition');
                    958: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel  959:     }
1.131     albertel  960:     return $result;
1.1       albertel  961: }
                    962: 
                    963: sub end_block {
1.167     www       964:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    965:     my $result;
                    966:     if ($target eq "edit") {
                    967: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    968:     }
                    969:     return $result;
                    970: }
                    971: 
                    972: sub start_languageblock {
1.201     albertel  973:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www       974: 
                    975:     my $result;
                    976: 
                    977:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    978: 	$target eq 'tex' || $target eq 'analyze') {
1.201     albertel  979: 	my $include = $token->[2]->{'include'};
                    980: 	my $exclude = $token->[2]->{'exclude'};
                    981:         my %languages=&Apache::loncommon::display_languages();
                    982:         $result='1';
                    983: 	if ($include) {
                    984:             $result='';
                    985:             foreach (split(/\,/,$include)) {
                    986:                 if ($languages{$_}) { $result='1'; }
                    987:             }
                    988: 	}
                    989:         if ($exclude) {
                    990:             foreach (split(/\,/,$exclude)) {
                    991:                 if ($languages{$_}) { $result='0'; }
                    992:             }
                    993: 	}
                    994: 	if ( ! $result ) {
                    995: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                    996: 						   $style);
                    997: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    998: 	}
                    999: 	$result='';
1.167     www      1000:     } elsif ($target eq 'edit') {
                   1001: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1002: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www      1003: 					  $token,40);
1.211     albertel 1004: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www      1005: 					  $token,40);
                   1006: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1007:     } elsif ($target eq 'modified') {
                   1008: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel 1009: 						     $safeeval,'include',
                   1010: 						     'exclude');
1.167     www      1011: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1012:     }
                   1013:     return $result;
                   1014: }
                   1015: 
                   1016: sub end_languageblock {
1.170     www      1017:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1018:     my $result;
1.201     albertel 1019:     if ($target eq "edit") {
1.170     www      1020: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1021:     }
                   1022:     return $result;
                   1023: }
                   1024: 
                   1025: sub start_instructorcomment {
1.201     albertel 1026:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www      1027: 
                   1028:     my $result;
                   1029: 
                   1030:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1031: 	$target eq 'tex' || $target eq 'analyze') {
1.284     albertel 1032:         $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
                   1033: 	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201     albertel 1034: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                   1035: 						   $parser,$style);
1.170     www      1036: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1037: 	}
                   1038: 	$result='';
                   1039:     } elsif ($target eq 'edit') {
                   1040: 	$result .=&Apache::edit::tag_start($target,$token);
                   1041: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1042:     }
                   1043:     return $result;
                   1044: }
                   1045: 
                   1046: sub end_instructorcomment {
1.159     albertel 1047:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1048:     my $result;
                   1049:     if ($target eq "edit") {
                   1050: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1051:     }
                   1052:     return $result;
1.4       tsai     1053: }
                   1054: 
                   1055: sub start_while {
1.159     albertel 1056:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1057: 
1.160     albertel 1058:     my $result;
1.161     albertel 1059:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160     albertel 1060: 	$target eq 'tex' || $target eq 'analyze') {
                   1061: 	my $code = $token->[2]->{'condition'};
1.4       tsai     1062: 
1.160     albertel 1063: 	push( @Apache::structuretags::whileconds, $code);
                   1064: 	if (!$Apache::lonxml::default_homework_loaded) {
                   1065: 	    &Apache::lonxml::default_homework_load($safeeval);
                   1066: 	}
                   1067: 	my $result = &Apache::run::run($code,$safeeval);
1.161     albertel 1068: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160     albertel 1069: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel 1070: 	push( @Apache::structuretags::whileline, $token->[5]);
                   1071: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel 1072: 	if ( $result ) {
                   1073: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                   1074: 	}
                   1075:     } elsif ($target eq 'edit') {
                   1076: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1077: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel 1078: 					  $token,40);
                   1079: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1080:     } elsif ($target eq 'modified') {
                   1081: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1082: 						     $safeeval,'condition');
                   1083: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel 1084:     }
1.160     albertel 1085:     return $result;
1.4       tsai     1086: }
                   1087: 
                   1088: sub end_while {
1.159     albertel 1089:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1090:     my $result;
                   1091: 
                   1092:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1093: 	$target eq 'tex' || $target eq 'analyze') {
                   1094: 	my $code = pop(@Apache::structuretags::whileconds);
                   1095: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel 1096: 	my $line = pop(@Apache::structuretags::whileline);
                   1097: 	my $return = &Apache::run::run($code,$safeeval);
                   1098: 	my $starttime=time;
                   1099: 	my $error=0;
                   1100: 	while ($return) {
                   1101: 	    if (time-$starttime >
                   1102: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.270     albertel 1103: 		#$return = 0; $error=1; next;
1.161     albertel 1104: 	    }
                   1105: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
                   1106: 	    $return = &Apache::run::run($code,$safeeval);
                   1107: 	}
                   1108: 	if ($error) {
1.270     albertel 1109: 	    &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running &lt;while&gt; on line').' '.$line.'</pre>');
1.160     albertel 1110: 	}
                   1111:     } elsif ($target eq "edit") {
                   1112: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel 1113:     }
1.160     albertel 1114:     return $result;
1.1       albertel 1115: }
1.6       tsai     1116: 
1.160     albertel 1117: # <randomlist show="1">
1.6       tsai     1118: #  <tag1>..</tag1>
                   1119: #  <tag2>..</tag2>
                   1120: #  <tag3>..</tag3>
1.160     albertel 1121: #  ...
1.6       tsai     1122: # </randomlist>
                   1123: sub start_randomlist {
1.159     albertel 1124:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1125:     my $result;
                   1126:     if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
                   1127: 	$target eq 'tex' || $target eq 'analyze') {
                   1128: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305     albertel 1129: 	my $b_parser= HTML::LCParser->new(\$body);
                   1130: 	$b_parser->xml_mode(1);
                   1131: 	$b_parser->marked_sections(1);
1.159     albertel 1132: 	my $b_tok;
                   1133: 	my @randomlist;
                   1134: 	my $list_item;
                   1135: 	while($b_tok = $b_parser->get_token() ) {
                   1136: 	    if($b_tok->[0] eq 'S') { # start tag
                   1137: 		# get content of the tag until matching end tag
                   1138: 		# get all text upto the matching tag
                   1139: 		# and push the content into @randomlist
                   1140: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                   1141: 							   $b_parser);
                   1142: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                   1143: 		push(@randomlist,$list_item);
                   1144: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                   1145:                 #         $list_item</b>";
                   1146: 	    }
                   1147: 	    if($b_tok->[0] eq 'T') { # text
                   1148: 		# what to do with text in between tags?
                   1149: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                   1150: 	    }
                   1151: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                   1152: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                   1153: 	    # }
                   1154: 	}
1.303     albertel 1155: 	if (@randomlist) {
                   1156: 	    my @idx_arr = (0 .. $#randomlist);
                   1157: 	    &Apache::structuretags::shuffle(\@idx_arr);
                   1158: 	    my $bodytext = '';
                   1159: 	    my $show=$#randomlist;
                   1160: 	    my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                   1161: 	    $showarg--;
                   1162: 	    if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
                   1163: 	    for(0 .. $show) {
                   1164: 		$bodytext .= "$randomlist[ $idx_arr[$_] ]";
                   1165: 	    }
                   1166: 	    &Apache::lonxml::newparser($parser,\$bodytext);
1.159     albertel 1167: 	}
                   1168:     } elsif ($target eq 'edit' ) {
                   1169: 	$result .=&Apache::edit::tag_start($target,$token);
                   1170: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                   1171: 					   $token,5);
                   1172: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1173:     } elsif ($target eq 'modified' ) {
                   1174: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1175: 						     $safeeval,'show');
                   1176: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1177:     }
                   1178:     return $result;
1.7       tsai     1179: }
                   1180: 
                   1181: sub shuffle {
                   1182:     my $a=shift;
                   1183:     my $i;
1.303     albertel 1184:     if (ref($a) eq 'ARRAY' && @$a) {
1.251     albertel 1185: 	&Apache::response::pushrandomnumber();
1.159     albertel 1186: 	for($i=@$a;--$i;) {
                   1187: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                   1188: 	    next if $i == $j;
                   1189: 	    @$a[$i,$j] = @$a[$j,$i];
                   1190: 	}
1.251     albertel 1191: 	&Apache::response::poprandomnumber();
1.7       tsai     1192:     }
1.6       tsai     1193: }
                   1194: 
                   1195: sub end_randomlist {
1.159     albertel 1196:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1197:     my $result;
                   1198:     if ($target eq 'edit' ) {
                   1199: 	$result=&Apache::edit::tag_end($target,$token,
                   1200: 				       'End Randomly Parsed Block');
                   1201:     }
                   1202:     return $result;
1.6       tsai     1203: }
                   1204: 
1.283     albertel 1205: sub ordered_show_check {
                   1206:     my $last_part=$Apache::inputtags::partlist[-2];
                   1207:     my $in_order=
                   1208: 	&Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
                   1209:     my $in_order_show=1;
                   1210:     if ($last_part ne '0' && lc($in_order) eq 'yes') {
                   1211: 	$in_order_show=&Apache::response::check_status($last_part);
                   1212:     }
                   1213:     return $in_order_show;
                   1214: }
                   1215: 
1.11      albertel 1216: sub start_part {
1.159     albertel 1217:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.312     albertel 1218:     &Apache::lonxml::startredirection(); # we'll use redirection to fix up 
                   1219:                                          # duedates.
1.159     albertel 1220:     my $result='';
                   1221:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.296     albertel 1222:     if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1.159     albertel 1223:     $Apache::inputtags::part=$id;
1.177     albertel 1224:     push(@Apache::inputtags::partlist,$id);
                   1225:     @Apache::inputtags::response=();
1.159     albertel 1226:     @Apache::inputtags::previous=();
                   1227:     @Apache::inputtags::previous_version=();
1.241     albertel 1228:     $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159     albertel 1229:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259     albertel 1230:     my $newtype=&Apache::lonnet::EXT("resource.$id.type");
                   1231:     if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283     albertel 1232:     my $in_order_show=&ordered_show_check();
1.214     albertel 1233:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259     albertel 1234:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209     albertel 1235:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1236: 
                   1237:     if ($target eq 'meta') {
1.224     www      1238: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   1239: 	return &Apache::response::mandatory_part_meta.
                   1240: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 1241:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   1242: 	     $target eq 'answer' || $target eq 'tex') {
1.283     albertel 1243: 	if ($hidden || !$in_order_show) {
1.159     albertel 1244: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
                   1245: 	} else {
                   1246: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   1247: 	    push (@Apache::inputtags::status,$status);
                   1248: 	    my $expression='$external::datestatus="'.$status.'";';
                   1249: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   1250: 	    &Apache::run::run($expression,$safeeval);
1.284     albertel 1251: 	    if ($env{'request.state'} eq 'construct') {
1.241     albertel 1252: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 1253: 	    }
1.216     albertel 1254: 	    if (( $status eq 'CLOSED' ) ||
                   1255: 		( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 1256: 		( $status eq 'NOT_YET_VIEWED') ||
1.216     albertel 1257: 		( $status eq 'BANNED') ||
                   1258: 		( $status eq 'UNAVAILABLE') ||
                   1259: 		( $status eq 'INVALID_ACCESS')) {
1.159     albertel 1260: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
                   1261: 		if ( $target eq "web" ) {
1.211     albertel 1262: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 1263: 		} elsif ( $target eq 'tex' ) {
1.284     albertel 1264: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.211     albertel 1265: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 1266: 		    } else {
1.211     albertel 1267: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 1268: 		    }
1.159     albertel 1269: 		}
                   1270: 	    } else {
                   1271: 		if ($target eq 'tex') {
1.284     albertel 1272: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.264     sakharuk 1273: 			if ($$tagstack[-2] eq 'td') {
                   1274: 			    $result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1275: 			} else {
                   1276: 			    $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1277: 			}
1.195     sakharuk 1278: 		    }
1.159     albertel 1279: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284     albertel 1280: 		    my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222     sakharuk 1281: 		    my @allkeys = split /,/,$allkeys;
                   1282: 		    my $allow_print_points = 0;
                   1283: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 1284: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 1285: 			    if ($1 ne '0') {$allow_print_points=1;}
                   1286: 			}
                   1287: 		    }
1.275     albertel 1288: 		    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   1289: 		    if (defined($maxtries) && $maxtries < 0) {
                   1290: 			$allow_print_points=0;
                   1291: 		    }
1.302     albertel 1292: 		    if (lc($env{'course.'.$env{'request.course.id'}.
                   1293: 				    '.disableexampointprint'}) eq 'yes') {
                   1294: 			$allow_print_points=0;
                   1295: 		    }
1.222     sakharuk 1296: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233     www      1297: 		} elsif ($target eq 'web') {
                   1298: 		    $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159     albertel 1299: 		}
                   1300: 	    }
                   1301: 	}
                   1302:     } elsif ($target eq 'edit') {
                   1303: 	$result.=&Apache::edit::tag_start($target,$token);
                   1304: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   1305: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      1306: 	    '&nbsp;&nbsp;'.
                   1307: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 1308: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1309:     } elsif ($target eq 'modified') {
                   1310: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 1311: 						     $safeeval,'id','display');
1.159     albertel 1312: 	if ($constructtag) {
1.225     albertel 1313: 	    #limiting ids to only letters numbers, and space
1.224     www      1314: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 1315: 	    $result = &Apache::edit::rebuild_tag($token);
                   1316: 	    $result.=&Apache::edit::handle_insert();
                   1317: 	}
                   1318:     }
                   1319:     return $result;
1.11      albertel 1320: }
                   1321: 
                   1322: sub end_part {
1.159     albertel 1323:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1324:     &Apache::lonxml::debug("in end_part $target ");
                   1325:     my $status=$Apache::inputtags::status['-1'];
                   1326:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283     albertel 1327:     my $in_order_show=&ordered_show_check();
1.312     albertel 1328:     my $result= &Apache::lonxml::endredirection(); # started in &start_part
                   1329:     if ($target eq 'grade') {
1.249     albertel 1330: 	if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283     albertel 1331: 	    !$hidden && $in_order_show) {
1.311     foxr     1332: 	    $result.=&Apache::inputtags::grade;
1.249     albertel 1333: 	} else {
                   1334: 	    # move any submission data to .hidden
                   1335: 	    &Apache::inputtags::hidealldata($Apache::inputtags::part);
                   1336: 	}
1.283     albertel 1337:     } elsif (($target eq 'web' || $target eq 'tex') &&
                   1338: 	     !$hidden && $in_order_show) {
1.159     albertel 1339: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   1340: 							$target);
1.212     albertel 1341: 	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
                   1342: 	    $gradestatus='';
                   1343: 	}
1.311     foxr     1344: 	$result.=$gradestatus;
1.265     sakharuk 1345: 	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';} 
1.181     albertel 1346:     } elsif ($target eq 'edit') {
1.311     foxr     1347: 	$result.=&Apache::edit::end_table();
1.159     albertel 1348:     }
                   1349:     pop @Apache::inputtags::status;
                   1350:     $Apache::inputtags::part='';
1.295     albertel 1351:     $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159     albertel 1352:     return $result;
1.11      albertel 1353: }
1.1       albertel 1354: 
1.25      albertel 1355: sub start_preduedate {
1.159     albertel 1356:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1357:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236     albertel 1358: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300     albertel 1359: 	if (!$Apache::lonhomework::scantronmode &&
                   1360: 	    $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 1361: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   1362: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159     albertel 1363: 	    &Apache::lonxml::get_all_text("/preduedate",$parser);
                   1364: 	}
1.24      albertel 1365:     }
1.159     albertel 1366:     return '';
1.24      albertel 1367: }
                   1368: 
1.25      albertel 1369: sub end_preduedate {
1.159     albertel 1370:     return '';
1.24      albertel 1371: }
                   1372: 
1.25      albertel 1373: sub start_postanswerdate {
1.159     albertel 1374:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234     albertel 1375:     if ($target eq 'web' || $target eq 'grade') {
1.300     albertel 1376: 	if ($Apache::lonhomework::scantronmode ||
                   1377: 	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.159     albertel 1378: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser);
                   1379: 	}
                   1380:     } elsif ($target eq 'tex') {
1.234     albertel 1381: 	&Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159     albertel 1382:     }
                   1383:     return '';
1.24      albertel 1384: }
                   1385: 
1.25      albertel 1386: sub end_postanswerdate {
1.159     albertel 1387:     return '';
1.24      albertel 1388: }
                   1389: 
1.25      albertel 1390: sub start_notsolved {
1.159     albertel 1391:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1392:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1393: 	$target eq 'tex') {
                   1394: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   1395: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 1396: 	if ($gradestatus =~ /^correct/ &&
                   1397: 	    &Apache::response::show_answer()) {
1.159     albertel 1398: 	    &Apache::lonxml::debug("skipping");
                   1399: 	    &Apache::lonxml::get_all_text("/notsolved",$parser);
                   1400: 	}
1.24      albertel 1401:     }
1.159     albertel 1402:     return '';
1.24      albertel 1403: }
                   1404: 
1.25      albertel 1405: sub end_notsolved {
1.159     albertel 1406:     return '';
1.24      albertel 1407: }
                   1408: 
                   1409: sub start_solved {
1.159     albertel 1410:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1411:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1412: 	$target eq 'tex') {
                   1413: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 1414: 	if ($gradestatus !~ /^correct/ ||
                   1415: 	    !&Apache::response::show_answer()) {
1.159     albertel 1416: 	    &Apache::lonxml::get_all_text("/solved",$parser);
                   1417: 	}
1.24      albertel 1418:     }
1.159     albertel 1419:     return '';
1.24      albertel 1420: }
                   1421: 
                   1422: sub end_solved {
1.248     albertel 1423:     return '';
                   1424: }
                   1425: 
                   1426: sub start_problemtype {
                   1427:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1428:     my $result;
                   1429:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1430: 	$target eq 'tex' || $target eq 'analyze') {
                   1431: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
                   1432: 	if (!defined($mode)) { $mode='show'; }
                   1433: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
                   1434: 	my $found=0;
                   1435: 	foreach my $type (split(',',$for)) {
                   1436: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
                   1437: 	}
                   1438: 	if ($mode eq 'show' && !$found) {
                   1439: 	    &Apache::lonxml::get_all_text("/problemtype",$parser);
                   1440: 	}
                   1441: 	if ($mode eq 'hide' && $found) {
                   1442: 	    &Apache::lonxml::get_all_text("/problemtype",$parser);
                   1443: 	}
                   1444:     } elsif ($target eq 'edit') {
                   1445: 	$result .=&Apache::edit::tag_start($target,$token);
                   1446: 	$result.=&Apache::edit::select_arg('Mode:','mode',
                   1447: 					   [['show','Show'],
                   1448: 					    ['hide','Hide']]
                   1449: 					   ,$token);
                   1450: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
                   1451: 					     [ ['exam','Exam/Quiz Problem'],
                   1452: 					       ['survey','Survey'],
                   1453: 					       ['problem','Homework Problem'] ]
                   1454: 					     ,$token);
                   1455: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1456:     } elsif ($target eq 'modified') {
                   1457: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1458: 						     $safeeval,'mode','for');
                   1459: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1460:     }
                   1461:     return $result;
                   1462: }
                   1463: 
                   1464: sub end_problemtype {
1.159     albertel 1465:     return '';
1.24      albertel 1466: }
1.34      albertel 1467: 
                   1468: sub start_startouttext {
1.159     albertel 1469:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1470:     my @result=(''.'');
                   1471:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
                   1472:     return (@result);
1.34      albertel 1473: }
1.159     albertel 1474: 
1.34      albertel 1475: sub end_startouttext {
1.159     albertel 1476:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1477:     my $result='';
                   1478:     my $text='';
                   1479: 
                   1480:     if ($target eq 'edit') {
                   1481: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211     albertel 1482: 	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
                   1483: <td>".&mt('Delete:').
1.159     albertel 1484:                  &Apache::edit::deletelist($target,$token)
                   1485: 		 ."</td>
1.42      albertel 1486: <td>".
1.159     albertel 1487:                  &Apache::edit::insertlist($target,$token).
                   1488: 		 &Apache::edit::end_row().
                   1489:                  &Apache::edit::start_spanning_row()."\n"
1.188     bowersj2 1490: 		 . &Apache::loncommon::helpLatexCheatsheet () .
1.255     www      1491: 		 &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159     albertel 1492:     }
                   1493:     if ($target eq 'modified') {
1.219     albertel 1494: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 1495:     }
                   1496:     if ($target eq 'tex') {
                   1497: 	$result .= '\noindent ';
                   1498:     }
                   1499:     return $result;
1.34      albertel 1500: }
1.159     albertel 1501: 
1.34      albertel 1502: sub start_endouttext {
1.159     albertel 1503:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1504:     my $result='';
                   1505:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   1506:     if ($target eq "modified") {
                   1507: 	$result='<endouttext />'.
                   1508: 	    &Apache::edit::handle_insertafter('startouttext'); }
                   1509:     return $result;
1.34      albertel 1510: }
1.159     albertel 1511: 
1.34      albertel 1512: sub end_endouttext {
1.159     albertel 1513:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1514:     my @result=('','');
                   1515:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   1516:     return (@result);
1.34      albertel 1517: }
1.159     albertel 1518: 
1.45      albertel 1519: sub delete_startouttext {
1.159     albertel 1520:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1521:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
                   1522:     my $text=$$parser['-1']->get_text("/endouttext");
                   1523:     my $ntoken=$$parser['-1']->get_token();
                   1524:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   1525:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   1526:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   1527:     # they did the last time round
                   1528:     &Apache::lonxml::increasedepth($ntoken);
                   1529:     &Apache::lonxml::decreasedepth($ntoken);
                   1530:     return 1;
1.193     www      1531: }
                   1532: 
                   1533: sub start_simpleeditbutton {
                   1534:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1535:     my $result='';
1.284     albertel 1536:     if (($env{'form.simple_edit_button'} ne 'off') &&
1.273     albertel 1537: 	($target eq 'web') &&
1.284     albertel 1538:         (&Apache::lonnet::allowed('srm',$env{'request.course.id'}))) {
                   1539:         my $url=$env{'request.noversionuri'};
1.193     www      1540:         $url=~s/\?.*$//;
1.278     albertel 1541: 	my ($symb) = &Apache::lonxml::whichuser();
1.194     www      1542: 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.278     albertel 1543:                 '<a href="'.$url.'/smpedit?symb='.&Apache::lonnet::escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1.196     www      1544: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193     www      1545:     }
                   1546:     return $result;
                   1547: }
                   1548: 
                   1549: sub end_simpleeditbutton {
                   1550:     return '';
1.45      albertel 1551: }
1.34      albertel 1552: 
1.1       albertel 1553: 1;
                   1554: __END__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>