Annotation of loncom/homework/structuretags.pm, revision 1.385

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.385   ! albertel    4: # $Id: structuretags.pm,v 1.384 2007/07/23 23:30:47 albertel 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;
1.338     albertel   39: use Apache::lonenc();
1.267     albertel   40: use Time::HiRes qw( gettimeofday tv_interval );
1.356     www        41: use lib '/home/httpd/lib/perl/';
                     42: use LONCAPA;
                     43:  
1.78      harris41   44: BEGIN {
1.248     albertel   45:     &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   46: }
                     47: 
                     48: sub start_web {
1.326     albertel   49:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383     albertel   50:     if ($target ne 'edit' && $target ne 'modified') {
                     51: 	my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
                     52: 	if ($target eq 'web' || $target eq 'webgrade') {
                     53: 	    return $bodytext;
                     54: 	}
                     55:     } elsif ($target eq "edit" ) {
                     56: 	my $bodytext = 
                     57: 	    &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
                     58: 	my $result = &Apache::edit::tag_start($target,$token);
                     59: 	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
                     60: 	return $result;
                     61:     } elsif ( $target eq "modified" ) {
                     62: 	return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159     albertel   63:     }
                     64:     return '';
1.10      albertel   65: }
                     66: 
                     67: sub end_web {
1.44      ng         68:     return '';
1.10      albertel   69: }
                     70: 
                     71: sub start_tex {
1.326     albertel   72:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198     sakharuk   73:     my $result='';
1.383     albertel   74:     if ($target ne 'edit' && $target ne 'modified') {
                     75: 	my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
                     76: 	if ($target eq 'tex') {
                     77: 	    return $bodytext.' ';
                     78: 	}
                     79:     } elsif ($target eq "edit" ) {
                     80: 	my $bodytext = 
                     81: 	    &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
                     82: 	my $result = &Apache::edit::tag_start($target,$token);
                     83: 	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
                     84: 	return $result;
                     85:     } elsif ( $target eq "modified" ) {
                     86: 	return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159     albertel   87:     }
1.198     sakharuk   88:     return $result;;
1.10      albertel   89: }
                     90: 
                     91: sub end_tex {
1.44      ng         92:     return '';
1.9       albertel   93: }
                     94: 
1.48      albertel   95: sub page_start {
1.345     albertel   96:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
                     97: 	$extra_head)=@_;
1.159     albertel   98:     my %found;
1.207     albertel   99:     foreach my $taginside (@$tagstack) {
1.159     albertel  100: 	foreach my $taglookedfor ('html','body','form') {
                    101: 	    if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
                    102: 	}
                    103:     }
                    104: 
1.343     albertel  105:     if ($target eq 'tex') {
                    106: 	return
                    107: 	    &Apache::londefdef::start_html($target,$token,$tagstack,
                    108: 					   $parstack,$parser,$safeeval);
                    109:     }
                    110: 
1.374     albertel  111:     $extra_head.= '
                    112: <script type="text/javascript">
                    113: function setSubmittedPart (part) {
                    114:    this.document.lonhomework.submitted.value="part_"+part;
                    115: }
                    116: </script>
                    117: ';
                    118: 
1.344     albertel  119:     my %body_args;
                    120:     if (defined($found{'html'})) {
                    121: 	$body_args{'skip_phases'}{'head'}=1;
                    122:     } else {
1.343     albertel  123: 	
1.345     albertel  124: 	$extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343     albertel  125: 
1.379     albertel  126: 	$extra_head .= &Apache::londefdef::generate_css_links();
                    127: 
1.384     albertel  128: 	if ($env{'request.state'} eq 'construct') {
1.343     albertel  129: 	    $extra_head.=&Apache::edit::js_change_detection().
                    130: 		"<script type=\"text/javascript\">\n".
                    131: 		"if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
                    132: 		&Apache::loncommon::browser_and_searcher_javascript().
                    133:                 "\n</script>\n";
                    134: 	}
1.159     albertel  135:     }
1.343     albertel  136: 
1.344     albertel  137:     if (defined($found{'body'})) {
                    138: 	$body_args{'skip_phases'}{'body'}=1;
                    139:     } elsif (!defined($found{'body'}) 
                    140: 	     && $env{'request.state'} eq 'construct') {
1.343     albertel  141: 	if ($target eq 'web' || $target eq 'edit') {
1.344     albertel  142: 	    # no extra args to bodytag
1.297     albertel  143: 	}
1.272     albertel  144:     } elsif (!defined($found{'body'})) {
1.343     albertel  145: 	my %add_entries;
1.159     albertel  146: 	my $background=&Apache::lonxml::get_param('background',$parstack,
                    147: 						  $safeeval);
1.343     albertel  148: 	if ($background ne '' ) {
                    149: 	    $add_entries{'background'} = $background;
                    150: 	}
1.344     albertel  151: 
1.290     albertel  152: 	my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
                    153: 					       $safeeval);
1.344     albertel  154:        	if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
                    155: 
                    156: 	$body_args{'bgcolor'}        = $bgcolor;
                    157: 	$body_args{'no_title'}       = 1;
                    158: 	$body_args{'force_register'} = 1;
                    159: 	$body_args{'add_entries'}    = \%add_entries;	
                    160:     }
1.365     albertel  161:     $body_args{'no_auto_mt_title'} = 1;
1.344     albertel  162:     my $page_start = &Apache::loncommon::start_page($name,$extra_head,
                    163: 						    \%body_args);
                    164: 
                    165:     if (!defined($found{'body'}) 
                    166: 	&& $env{'request.state'} ne 'construct'
                    167: 	&& ($target eq 'web' || $target eq 'webgrade')) {
                    168: 
1.367     albertel  169: 	my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344     albertel  170: 	if ($symb eq '' && !$publicuser) {
                    171: 	    my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
                    172: 	    $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
                    173: 	    $page_start .= $help;
1.159     albertel  174: 	}
1.344     albertel  175:     }
                    176: 
                    177:     if (!defined($found{'body'})) {
1.343     albertel  178: 	$page_start .= &Apache::lonxml::message_location();
1.159     albertel  179:     }
1.344     albertel  180:     
1.159     albertel  181:     my $form_tag_start;
                    182:     if (!defined($found{'form'})) {
1.337     albertel  183: 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338     albertel  184: 	my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327     albertel  185: 	$form_tag_start.=$uri.'" ';
                    186: 	if ($target eq 'edit') {
                    187: 	    $form_tag_start.=&Apache::edit::form_change_detection();
                    188: 	}
1.368     albertel  189: 	$form_tag_start.='>'."\n";
1.355     albertel  190: 
                    191: 	my $symb=&Apache::lonnet::symbread();
                    192: 	if ($symb =~ /\S/) {
                    193: 	    $symb=
                    194: 		&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
                    195: 	    $form_tag_start.=
1.368     albertel  196: 		"\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355     albertel  197: 	}
1.159     albertel  198:     }
1.343     albertel  199:     return ($page_start,$form_tag_start);
1.105     albertel  200: }
                    201: 
1.141     matthew   202: #use Time::HiRes();
1.105     albertel  203: sub get_resource_name {
1.159     albertel  204:     my ($parstack,$safeeval)=@_;
1.204     albertel  205:     if (defined($Apache::lonhomework::name)) {
                    206: 	return $Apache::lonhomework::name;
                    207:     }
1.367     albertel  208:     my ($symb)=&Apache::lonnet::whichuser();
1.279     albertel  209:     my $name=&Apache::lonnet::gettitle($symb);
1.159     albertel  210:     if ($name eq '') {
                    211: 	$name=&Apache::lonnet::EXT('resource.title');
                    212: 	if ($name eq 'con_lost') { $name = ''; }
                    213:     }
1.204     albertel  214:     if ($name!~/\S+/) {
1.284     albertel  215: 	$name=$env{'request.uri'};
1.205     albertel  216: 	$name=~s-.*/([^/]+)$-$1-;
1.204     albertel  217:     }
1.159     albertel  218:     $Apache::lonhomework::name=$name;
                    219:     return $name;
1.105     albertel  220: }
                    221: 
                    222: sub setup_rndseed {
1.159     albertel  223:     my ($safeeval)=@_;
                    224:     my $rndseed;
1.367     albertel  225:     my ($symb)=&Apache::lonnet::whichuser();
1.333     albertel  226:     if ($env{'request.state'} eq "construct" 
                    227: 	|| $symb eq '' 
                    228: 	|| $Apache::lonhomework::type eq 'practice'
                    229: 	|| $Apache::lonhomework::history{'resource.CODE'}) {
1.316     www       230: 	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317     albertel  231: 						['rndseed']);
1.284     albertel  232: 	$rndseed=$env{'form.rndseed'};
1.159     albertel  233: 	if (!$rndseed) {
1.162     albertel  234: 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
                    235: 	    if (!$rndseed) {
                    236: 		$rndseed=time;
                    237: 	    }
1.284     albertel  238: 	    $env{'form.rndseed'}=$rndseed;
1.162     albertel  239: 	}
1.374     albertel  240: 	if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    241: 	      && $env{'form.submitted'} eq 'yes')  ||
1.284     albertel  242: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190     albertel  243: 	    srand(time);
                    244: 	    $rndseed=int(rand(2100000000));
1.284     albertel  245: 	    $env{'form.rndseed'}=$rndseed;
                    246: 	    delete($env{'form.resetdata'});
                    247: 	    delete($env{'form.newrandomization'});
1.159     albertel  248: 	}
1.187     albertel  249: 	if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307     albertel  250: 	    $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187     albertel  251:         }
1.247     albertel  252:         if ($Apache::lonhomework::history{'resource.CODE'}) {
                    253: 	   $rndseed=&Apache::lonnet::rndseed();
                    254: 	}
1.221     albertel  255: 	if ($safeeval) {
                    256: 	    &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250     albertel  257: 	    &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221     albertel  258: 	}
1.159     albertel  259:     }
                    260:     return $rndseed;
1.105     albertel  261: }
                    262: 
1.268     albertel  263: sub remember_problem_state {
                    264:     return '
1.284     albertel  265:        <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
                    266:        <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
                    267:        <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268     albertel  268: }
                    269: 
1.105     albertel  270: sub problem_edit_header {
1.268     albertel  271:     return '<input type="hidden" name="submitted" value="edit" />'.
                    272: 	&Apache::structuretags::remember_problem_state().'
1.210     albertel  273:        <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243     matthew   274:        <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328     albertel  275:        <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243     matthew   276:        <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
                    277:        <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
                    278:        <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.359     albertel  279:        &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.260     albertel  280:        .'</td></tr></table>'.
1.282     albertel  281:        '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105     albertel  282: }
                    283: 
                    284: sub problem_edit_footer {
1.210     albertel  285:     return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255     www       286:     <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348     albertel  287:     &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342     albertel  288:     "\n</form>\n".&Apache::loncommon::end_page();
1.105     albertel  289: }
                    290: 
1.235     albertel  291: sub option {
                    292:     my ($value,$name) = @_;
                    293:     my $result ="<option value='".$value."' ";
1.284     albertel  294:     if ($env{'form.'.$name} eq $value) {
1.235     albertel  295: 	$result.=" selected='on' ";
                    296:     }
                    297:     $result.='>';
                    298:     return $result;
                    299: }
                    300: 
1.105     albertel  301: sub problem_web_to_edit_header {
1.159     albertel  302:     my ($rndseed)=@_;
1.313     albertel  303:     my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373     albertel  304:     $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.313     albertel  305:     $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243     matthew   306:              <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
                    307:              <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210     albertel  308:              <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270     albertel  309:               <input type="text" name="rndseed" size="10" value="'.
1.175     albertel  310: 	       $rndseed.'"
1.270     albertel  311:            onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.384     albertel  312:              <span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
1.315     albertel  313:     my $show_all_foils_text = 
                    314: 	($Apache::lonhomework::parsing_a_task) ?
                    315: 	&mt('&nbsp;Show&nbsp;All&nbsp;Instances')
                    316: 	: &mt('&nbsp;Show&nbsp;All&nbsp;Foils');
                    317: 
1.284     albertel  318:     if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.384     albertel  319:     $result.= ' />'.$show_all_foils_text.'</label></span>'.
1.228     www       320: 	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.371     albertel  321: 	'<hr />';
1.384     albertel  322:     $result.=&mt('Apply style file').'
                    323: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
                    324:  <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
                    325: <input type="submit" name="clear_style_file" value="'.&mt('Clear').'" />
                    326: <br />';
                    327: 
1.313     albertel  328:     if (!$Apache::lonhomework::parsing_a_task) {
                    329: 	$result.="
1.235     albertel  330: <nobr>
                    331: Problem Status:
                    332: <select name='problemstate'>
1.270     albertel  333:   <option value=''></option>
1.235     albertel  334:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    335:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    336:   ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
                    337:   ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
                    338:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
                    339: </select>
                    340: </nobr>
                    341: <nobr>
                    342: Problem Type:
                    343: <select name='problemtype'>
1.270     albertel  344:   <option value=''></option>
1.242     albertel  345:   ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
                    346:   ".&option('problem','problemtype').&mt("Homework problem")."</option>
                    347:   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235     albertel  348: </select>
                    349: </nobr>
                    350: <nobr>
                    351: Feedback Mode:
                    352: <select name='problemstatus'>
                    353:   <option value=''></option>
1.242     albertel  354:   ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
                    355:   ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235     albertel  356: </select>
                    357: </nobr>
1.242     albertel  358: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235     albertel  359: <hr />";
1.313     albertel  360: 	my $numtoanalyze=$env{'form.numtoanalyze'};
                    361: 	if (!$numtoanalyze) { $numtoanalyze=20; }
                    362: 	$result.= '<input type="submit" name="problemmode" value='.
                    363: 	    &mt('"Calculate answers').'" /> for
1.136     albertel  364:              <input type="text" name="numtoanalyze" value="'.
1.210     albertel  365: 	     $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
                    366: 	     '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176     albertel  367: 						     '',undef,undef,300).
1.210     albertel  368: 						     '<hr />';
1.376     albertel  369:     } elsif ($Apache::lonhomework::parsing_a_task) {
                    370: 	$result.="
                    371: <nobr>
                    372: Problem Status:
                    373: <select name='problemstate'>
                    374:   <option value=''></option>
                    375:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    376:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    377:   ".&option('WEB_GRADE'            ,'problemstate').&mt("Criteria Grading")."</option>
                    378:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Feedback")."</option>
                    379: </select>
                    380: </nobr>
                    381: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
                    382: <hr />";
1.313     albertel  383:     }
1.159     albertel  384:     return $result;
1.48      albertel  385: }
                    386: 
1.65      albertel  387: sub initialize_storage {
1.357     albertel  388:     my ($given_symb) = @_;
1.353     albertel  389:     undef(%Apache::lonhomework::results);
                    390:     undef(%Apache::lonhomework::history);
1.357     albertel  391:     my ($symb,$courseid,$domain,$name) = 
1.367     albertel  392: 	&Apache::lonnet::whichuser($given_symb);
1.353     albertel  393:     
                    394:     # anonymous users (CODEd exams) have no data
                    395:     if ($name eq 'anonymous' 
                    396: 	&& !defined($domain)) {
                    397: 	return;
                    398:     }
                    399: 
1.333     albertel  400:     if ($env{'request.state'} eq 'construct' 
                    401: 	|| $symb eq ''
                    402: 	|| $Apache::lonhomework::type eq 'practice') {
                    403: 	
                    404: 	my $namespace = $symb || $env{'request.uri'};
                    405: 	if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374     albertel  406: 	    ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    407: 	     && $env{'form.submitted'} eq 'yes') ||
1.333     albertel  408: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
                    409: 	    &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
                    410: 	    &Apache::lonxml::debug("Attempt reset");
                    411: 	}
1.159     albertel  412: 	%Apache::lonhomework::history=
1.333     albertel  413: 	    &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159     albertel  414: 	my ($temp)=keys %Apache::lonhomework::history ;
                    415: 	&Apache::lonxml::debug("Return message of $temp");
                    416:     } else {
                    417: 	%Apache::lonhomework::history=
                    418: 	    &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                    419:     }
1.353     albertel  420: 
1.159     albertel  421:     #ignore error conditions
1.67      albertel  422:     my ($temp)=keys %Apache::lonhomework::history ;
1.159     albertel  423:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65      albertel  424: }
                    425: 
                    426: # -------------------------------------------------------------finalize_storage
                    427: # Stores away the result has to a student's environment
                    428: # checks form.grade_ for specific values, other wises stores
                    429: # to the running users environment
1.285     raeburn   430: # Will increment totals for attempts, students, and corrects
                    431: # if running user has student role.  
1.65      albertel  432: sub finalize_storage {
1.357     albertel  433:     my ($given_symb) = @_;
1.159     albertel  434:     my $result;
1.289     albertel  435:     if (%Apache::lonhomework::results) {
1.323     albertel  436: 	my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
                    437: 	delete(@Apache::lonhomework::results{@remove});
1.357     albertel  438: 	my ($symb,$courseid,$domain,$name) = 
1.367     albertel  439: 	    &Apache::lonnet::whichuser($given_symb);
1.333     albertel  440: 	if ($env{'request.state'} eq 'construct' 
                    441: 	    || $symb eq ''
                    442: 	    || $Apache::lonhomework::type eq 'practice') {
                    443: 	    my $namespace = $symb || $env{'request.uri'};
1.284     albertel  444: 	    $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159     albertel  445: 	    $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333     albertel  446: 					      $namespace,'',$domain,$name);
1.159     albertel  447: 	    &Apache::lonxml::debug('Construct Store return message:'.$result);
                    448: 	} else {
                    449: 	    $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
                    450: 					    $symb,$courseid,$domain,$name);
                    451: 	    &Apache::lonxml::debug('Store return message:'.$result);
1.285     raeburn   452:             if ($env{'request.role'} =~/^st/) {
                    453:                 &store_aggregates($symb,$courseid);
                    454:             }
1.159     albertel  455: 	}
1.323     albertel  456:     } else {
                    457: 	&Apache::lonxml::debug('Nothing to store');
1.67      albertel  458:     }
1.159     albertel  459:     return $result;
1.65      albertel  460: }
1.289     albertel  461: use Data::Dumper;
1.65      albertel  462: 
1.285     raeburn   463: # -------------------------------------------------------------store_aggregates
                    464: # Sends hash of values to be incremented in nohist_resourcetracker.db
                    465: # for the course. Increments total number of attempts, unique students 
                    466: # and corrects for each part for an instance of a problem, as appropriate.
                    467: sub store_aggregates {
                    468:     my ($symb,$courseid) = @_;
1.286     albertel  469:     my %aggregate;
                    470:     my @parts;
1.288     albertel  471:     my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
                    472:     my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286     albertel  473:     foreach my $key (keys(%Apache::lonhomework::results)) {
1.287     albertel  474:         if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286     albertel  475:             push(@parts, $1);
1.285     raeburn   476:         }
                    477:     }
1.286     albertel  478:     foreach my $part (@parts) {
                    479:         if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
                    480: 	    eq 'APPROX_ANS' ||
                    481: 	    $Apache::lonhomework::results{'resource.'.$part.'.award'}
                    482: 	    eq 'EXACT_ANS') {
1.287     albertel  483:             $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285     raeburn   484:         }
1.286     albertel  485:         if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287     albertel  486:             $aggregate{$symb."\0".$part."\0users"} = 1;
1.292     raeburn   487:         } else {
1.293     albertel  488:             my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]); 
1.292     raeburn   489:             if ($last_reset) {
1.293     albertel  490:                 if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292     raeburn   491:                     $aggregate{$symb."\0".$part."\0users"} = 1;
                    492:                 }
                    493:             }
1.285     raeburn   494:         }
1.287     albertel  495:         $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285     raeburn   496:     }
1.292     raeburn   497:     if (keys (%aggregate) > 0) {
1.289     albertel  498: 	&Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292     raeburn   499:                             $cdomain,$cname);
                    500:     }
                    501: }
1.289     albertel  502: 
1.65      albertel  503: sub checkout_msg {
1.211     albertel  504:     my %lt=&Apache::lonlocal::texthash( 
                    505: 		'resource'=>'The resource needs to be checked out',
                    506: 		'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.',
                    507:                 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
                    508:                 'checkout'=>'Check out Exam for Viewing',
                    509: 		'checkout?'=>'Check out Exam?');
1.352     albertel  510:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159     albertel  511:     return (<<ENDCHECKOUT);
1.211     albertel  512: <h2>$lt{'resource'}</h2>
                    513:     <p>$lt{'id_expln'}</p>
                    514: <font color="red">
                    515: <p>$lt{'warning'}</p>
1.91      albertel  516: </font>
1.352     albertel  517: <form name="checkout" method="POST" action="$uri">
1.91      albertel  518: <input type="hidden" name="doescheckout" value="yes" />
1.211     albertel  519: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel  520: </form>
                    521: ENDCHECKOUT
                    522: }
                    523: 
1.252     albertel  524: sub firstaccess_msg {
1.253     albertel  525:     my ($time,$symb)=@_;
                    526:     my ($map)=&Apache::lonnet::decode_symb($symb);
                    527:     my $foldertitle=&Apache::lonnet::gettitle($map);
                    528:     &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352     albertel  529:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252     albertel  530:     return (<<ENDCHECKOUT);
1.253     albertel  531: <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>
1.352     albertel  532: <form name="markaccess" method="POST" action="$uri">
1.252     albertel  533: <input type="hidden" name="markaccess" value="yes" />
                    534: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
                    535: </form>
                    536: ENDCHECKOUT
                    537: }
                    538: 
1.204     albertel  539: sub init_problem_globals {
                    540:     my ($type)=@_;
                    541:     #initialize globals
1.308     foxr      542:     #   For problems, we start out in part 0 (outside a <part> tag).
                    543:     #   and part 0 is used to describe the main body of the <problem>
                    544:     #
1.204     albertel  545:     if ($type eq 'problem') {
                    546: 	$Apache::inputtags::part='0';
                    547: 	@Apache::inputtags::partlist=('0');
1.266     albertel  548: 	$Apache::lonhomework::problemstatus=&get_problem_status('0');
                    549: 	$Apache::lonhomework::ignore_response_errors=0;
1.308     foxr      550: 
1.266     albertel  551:     } elsif ($type eq 'library') {
1.204     albertel  552: 	$Apache::inputtags::part='';
                    553: 	@Apache::inputtags::partlist=();
                    554: 	$Apache::lonhomework::problemstatus='';	
1.266     albertel  555: 	$Apache::lonhomework::ignore_response_errors=1;
1.308     foxr      556: 
1.304     albertel  557:     } elsif ($type eq 'Task') {
                    558: 	$Apache::inputtags::part='0';
                    559: 	@Apache::inputtags::partlist=('0');
                    560: 	$Apache::lonhomework::problemstatus='';	
                    561: 	$Apache::lonhomework::ignore_response_errors=1;
1.204     albertel  562:     }
                    563:     @Apache::inputtags::responselist = ();
                    564:     @Apache::inputtags::importlist = ();
                    565:     @Apache::inputtags::previous=();
                    566:     @Apache::inputtags::previous_version=();
                    567:     $Apache::structuretags::printanswer='No';
                    568:     @Apache::structuretags::whileconds=();
                    569:     @Apache::structuretags::whilebody=();
                    570:     @Apache::structuretags::whileline=();
                    571:     $Apache::lonhomework::scantronmode=0;
                    572:     undef($Apache::lonhomework::name);
1.358     albertel  573:     undef($Apache::lonhomework::default_type);
                    574:     undef($Apache::lonhomework::type);
1.204     albertel  575: }
                    576: 
                    577: sub reset_problem_globals {
                    578:     my ($type)=@_;
                    579:     undef(%Apache::lonhomework::history);
                    580:     undef(%Apache::lonhomework::results);
                    581:     undef($Apache::inputtags::part);
1.208     albertel  582: #don't undef this, lonhomework.pm takes care of this, we use this to 
                    583: #detect if we try to do 2 problems in one file
                    584: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel  585:     undef($Apache::lonhomework::name);
1.358     albertel  586:     undef($Apache::lonhomework::default_type);
                    587:     undef($Apache::lonhomework::type);
                    588:     undef($Apache::lonhomework::scantronmode);
                    589:     undef($Apache::lonhomework::problemstatus);
                    590:     undef($Apache::lonhomework::ignore_response_errors);
1.204     albertel  591: }
                    592: 
1.241     albertel  593: sub set_problem_state {
1.240     albertel  594:     my ($part)=@_;
1.284     albertel  595:     if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240     albertel  596: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                    597: 	    'correct_by_student';
                    598:     }
                    599: }
                    600: 
1.241     albertel  601: sub get_problem_status {
                    602:     my ($part)=@_;
1.267     albertel  603:     my $problem_status;
1.284     albertel  604:     if ($env{'request.state'} eq 'construct' &&
                    605: 	defined($env{'form.problemstatus'})) {
                    606: 	$problem_status=$env{'form.problemstatus'};
1.267     albertel  607:     } else {
                    608: 	$problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                    609: 	&Apache::lonxml::debug("problem status for $part is $problem_status");
1.284     albertel  610: 	&Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241     albertel  611:     }
                    612:     return $problem_status;
                    613: }
                    614: 
1.9       albertel  615: sub start_problem {
1.326     albertel  616:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19      albertel  617: 
1.311     foxr      618:     # We'll use the redirection to fix up printing of duedates.
1.321     albertel  619:     if (!$Apache::lonxml::metamode) {
                    620: 	&Apache::lonxml::startredirection();
                    621:     }
1.311     foxr      622: 
1.308     foxr      623:     # Problems don't nest and we don't allow more than one <problem> in
                    624:     # a .problem file.
                    625:     #
1.184     albertel  626:     if ( $Apache::inputtags::part ne '' ||
                    627: 	 $Apache::lonhomework::parsing_a_problem) {
                    628: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
1.326     albertel  629: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159     albertel  630: 	return '';
                    631:     }
1.184     albertel  632: 
                    633:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel  634:     &init_problem_globals('problem');
1.166     albertel  635: 
1.284     albertel  636:     if (defined($env{'scantron.maxquest'})) {
1.166     albertel  637: 	$Apache::lonhomework::scantronmode=1;
                    638:     }
1.161     albertel  639: 
1.159     albertel  640:     if ($target ne 'analyze') {
1.284     albertel  641:        	if ($env{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159     albertel  642: 	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284     albertel  643: 	if (($env{'request.state'} eq 'construct') &&
                    644: 	    defined($env{'form.problemtype'})) {
                    645: 	    $Apache::lonhomework::type=$env{'form.problemtype'};
1.237     albertel  646: 	}
1.332     albertel  647: 	&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159     albertel  648:     }
1.164     albertel  649:     if ($Apache::lonhomework::type eq '' ) {
1.284     albertel  650: 	my $uri=$env{'request.uri'};
1.159     albertel  651: 	if ($uri=~/\.(\w+)$/) {
                    652: 	    $Apache::lonhomework::type=$1;
                    653: 	    &Apache::lonxml::debug("Using type of $1");
                    654: 	} else {
                    655: 	    $Apache::lonhomework::type='problem';
                    656: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                    657: 	}
1.87      albertel  658:     }
1.301     albertel  659:     $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58      www       660: 
1.363     albertel  661:     &initialize_storage();
1.366     albertel  662:     if ($target eq 'web') {
                    663: 	&Apache::lonxml::debug(" grading history ");
                    664: 	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
                    665:     }
1.363     albertel  666: 
1.159     albertel  667:     #added vars to the scripting enviroment
1.213     albertel  668:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248     albertel  669:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel  670:     &Apache::run::run($expression,$safeeval);
1.159     albertel  671:     my $status;
                    672:     my $accessmsg;
                    673: 
1.343     albertel  674:     my $name= &get_resource_name($parstack,$safeeval);
1.350     albertel  675:     my ($result,$form_tag_start);
1.354     albertel  676:     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
                    677: 	|| $target eq 'edit') {
1.350     albertel  678: 	($result,$form_tag_start) =
                    679: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                    680: 			$name);
                    681:     }
                    682: 
1.284     albertel  683:     if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159     albertel  684: 
                    685:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
                    686:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    687: 	$target eq 'tex') {
                    688: 	#handle exam checkout
                    689: 	if ($Apache::lonhomework::type eq 'exam') {
                    690: 	    my $token=
                    691: 		$Apache::lonhomework::history{"resource.0.outtoken"};
1.284     albertel  692: 	    if (($env{'form.doescheckout'}) && (!$token)) {
1.159     albertel  693: 		$token=&Apache::lonxml::maketoken();
                    694: 		$Apache::lonhomework::history{"resource.0.outtoken"}=
                    695: 		    $token;
                    696: 	    }
1.343     albertel  697: 	    $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142     albertel  698: 	}
1.284     albertel  699: 	if ($env{'form.markaccess'}) {
1.252     albertel  700: 	    &Apache::lonnet::set_first_access('map');
                    701: 	}
1.159     albertel  702: 	#handle rand seed in construction space
                    703: 	my $rndseed=&setup_rndseed($safeeval);
1.367     albertel  704: 	my ($symb)=&Apache::lonnet::whichuser();
1.333     albertel  705: 	if ($env{'request.state'} ne "construct" && 
                    706: 	    ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162     albertel  707: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
                    708: 		$rndseed.'" />'.
                    709: 		    '<input type="submit" name="resetdata"
1.334     albertel  710:                              value="'.&mt('New Problem Variation').'" />';
                    711: 	    if (exists($env{'form.username'})) {
                    712: 		$form_tag_start.=
1.164     albertel  713: 		    '<input type="hidden" name="username"
1.284     albertel  714:                              value="'.$env{'form.username'}.'" />';
1.334     albertel  715: 	    }
1.333     albertel  716: 	    if ($env{'request.role.adv'}) {
1.267     albertel  717: 		$form_tag_start.=
1.300     albertel  718: 		    ' <label><input type="checkbox" name="showallfoils" ';
1.284     albertel  719: 		if (defined($env{'form.showallfoils'})) {
1.267     albertel  720: 		    $form_tag_start.='checked="on"';
                    721: 		}
1.300     albertel  722: 		$form_tag_start.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').
                    723: 		    '</label>';
1.267     albertel  724: 	    }
                    725: 	    $form_tag_start.='<hr />';
1.162     albertel  726: 	}
1.324     albertel  727: 
                    728: 	($status,$accessmsg,my $slot_name,my $slot) = 
                    729: 	    &Apache::lonhomework::check_slot_access('0','problem');
1.159     albertel  730: 	push (@Apache::inputtags::status,$status);
1.324     albertel  731: 
1.159     albertel  732: 	my $expression='$external::datestatus="'.$status.'";';
                    733: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                    734: 	&Apache::run::run($expression,$safeeval);
                    735: 	&Apache::lonxml::debug("Got $status");
1.324     albertel  736: 
1.159     albertel  737: 	if (( $status eq 'CLOSED' ) ||
                    738: 	    ( $status eq 'UNCHECKEDOUT') ||
1.252     albertel  739: 	    ( $status eq 'NOT_YET_VIEWED') ||
1.159     albertel  740: 	    ( $status eq 'BANNED') ||
1.216     albertel  741: 	    ( $status eq 'UNAVAILABLE') ||
1.324     albertel  742: 	    ( $status eq 'NOT_IN_A_SLOT') ||
1.216     albertel  743: 	    ( $status eq 'INVALID_ACCESS')) {
1.326     albertel  744: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                    745: 						       $style);
1.159     albertel  746: 	    if ( $target eq "web" ) {
1.343     albertel  747: 		my $msg;
1.159     albertel  748: 		if ($status eq 'UNAVAILABLE') {
1.245     albertel  749: 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253     albertel  750: 		} elsif ($status ne 'NOT_YET_VIEWED') {
1.245     albertel  751: 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159     albertel  752: 		}
1.216     albertel  753: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159     albertel  754: 		    $msg.='The problem '.$accessmsg;
                    755: 		} elsif ($status eq 'UNCHECKEDOUT') {
1.343     albertel  756: 		    $msg.=&checkout_msg();
1.252     albertel  757: 		} elsif ($status eq 'NOT_YET_VIEWED') {
1.253     albertel  758: 		    $msg.=&firstaccess_msg($accessmsg,$symb);
1.325     albertel  759: 		} elsif ($status eq 'NOT_IN_A_SLOT') {
                    760: 		    $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159     albertel  761: 		}
                    762: 		$result.=$msg.'<br />';
                    763: 	    } elsif ($target eq 'tex') {
1.332     albertel  764: 		my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
                    765: 		                    : '\begin{minipage}{\textwidth}';
                    766: 		$result.='\begin{document}\noindent \vskip 1 mm '.
                    767: 		    $startminipage.'\vskip 0 mm';
1.159     albertel  768: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel  769: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel  770: 		} else {
1.211     albertel  771: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel  772: 		}
                    773: 	    }
1.324     albertel  774: 	} elsif ($status eq 'NEEDS_CHECKIN') {
1.326     albertel  775: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                    776: 						       $style);
1.324     albertel  777: 	    if ($target eq 'web') {
1.375     albertel  778: 		$result .= 
                    779: 		    &Apache::bridgetask::proctor_validation_screen($slot);
1.324     albertel  780: 	    } elsif ($target eq 'grade') {
                    781: 		&Apache::bridgetask::proctor_check_auth($slot_name,$slot,
                    782: 							'problem');
                    783: 	    }
1.159     albertel  784: 	} elsif ($target eq 'web') {
1.360     albertel  785: 	    if ($status eq 'CAN_ANSWER' 
                    786: 		&& $slot_name ne ''
                    787: 		&& $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
                    788: 		# unproctored slot access, self checkin
                    789: 		&Apache::bridgetask::check_in('problem',undef,undef,
                    790: 					      $slot_name);
                    791: 	    }
1.368     albertel  792: 	    $result.="\n $form_tag_start \t".	
1.227     albertel  793: 	      '<input type="hidden" name="submitted" value="yes" />';
                    794: 	    # create a page header and exit
1.284     albertel  795: 	    if ($env{'request.state'} eq "construct") {
                    796: 		$result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227     albertel  797: 	    }
                    798: 	    # if we are viewing someone else preserve that info
1.284     albertel  799: 	    if (defined $env{'form.grade_symb'}) {
1.227     albertel  800: 		foreach my $field ('symb','courseid','domain','username') {
                    801: 		    $result .= '<input type="hidden" name="grade_'.$field.
1.284     albertel  802: 			'" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159     albertel  803: 		}
                    804: 	    }
                    805: 	} elsif ($target eq 'tex') {
1.319     foxr      806: 	    $result .= 'INSERTTEXFRONTMATTERHERE';
                    807: 
1.99      sakharuk  808: 	}
1.159     albertel  809:     } elsif ($target eq 'edit') {
1.343     albertel  810: 	$result .= $form_tag_start.&problem_edit_header();
1.226     albertel  811: 	$Apache::lonxml::warnings_error_header=
                    812: 	    &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  813: 	my $temp=&Apache::edit::insertlist($target,$token);
                    814: 	$result.=$temp;
                    815:     } elsif ($target eq 'modified') {
                    816: 	$result=$token->[4];
                    817:     } else {
                    818: 	# page_start returned a starting result, delete it if we don't need it
                    819: 	$result = '';
1.99      sakharuk  820:     }
1.159     albertel  821:     return $result;
1.9       albertel  822: }
                    823: 
                    824: sub end_problem {
1.159     albertel  825:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321     albertel  826:     my $result;
1.310     foxr      827: 
1.321     albertel  828:     if (!$Apache::lonxml::metamode) {
                    829: 	$result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329     albertel  830: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel  831:     }
1.319     foxr      832: 
                    833:     if ($target eq 'tex') {
1.321     albertel  834: 	# Figure out the front matter and replace the
                    835: 	# INSERTTEXFRONTMATTERHERE in result with it.  note that we do
                    836: 	# this in end_problem because whether or not we display due
                    837: 	# dates depends on whether due dates have already been
                    838: 	# displayed in the problem parts.
                    839: 
1.319     foxr      840: 	my $frontmatter   = '';
                    841: 	my $startminipage = '';
                    842: 	if (not $env{'form.problem_split'}=~/yes/) {
                    843: 	    $startminipage = '\begin{minipage}{\textwidth}';
                    844: 	}
                    845: 	my $id = $Apache::inputtags::part;
                    846: 	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
                    847: 	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
                    848: 	my @packages = split /,/,$packages;
                    849: 	my $allow_print_points = 0;
                    850: 	foreach my $partial_key (@packages) {
                    851: 	    if ($partial_key=~m/^part_0$/) {
                    852: 		$allow_print_points=1;
                    853: 	    }
                    854: 	}
                    855: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                    856: 	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
                    857: 	if (lc($env{'course.'.$env{'request.course.id'}.
                    858: 			'.disableexampointprint'}) eq 'yes') {
                    859: 	    $allow_print_points=0;
                    860: 	}
                    861: 	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
                    862: 	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 ';
                    863: 	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
                    864: 	    '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
                    865: 	
                    866: 	#  Figure out what the due date is and if we need to print
                    867: 	#  it in the problem header.  We have been logging the
                    868: 	#  last due date written to file. 
                    869: 	
                    870: 	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate"); 
                    871: 	my $duedate = POSIX::strftime("%c",localtime($duetime));
                    872: 	my $temp_file;
                    873: 	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
                    874: 	
                    875: 	# Figure out what the last printed due date is or set it
                    876: 	# to the epoch if no duedates have been printed.
                    877: 	
                    878: 	my $due_file_content = 0;      #   If the file does not yet exist, time is the epoch.
                    879: 	if (-e $filename) {
                    880: 	    $temp_file = Apache::File->new($filename);
                    881: 	    my @due_file      = <$temp_file>;
                    882: 	    $due_file_content = $due_file[$#due_file];
                    883: 	    chomp $due_file_content;
                    884: 	} 
                    885: 	
                    886: 	# We display the due date iff it is not the same as the last
                    887: 	# duedate in problem header ($due_file_content), and
                    888: 	# none of our parts displayed a duedate.
                    889: 	#
                    890: 	my $parts_with_displayduedate;
                    891: 	if (defined $Apache::outputtags::showonce{'displayduedate'}) {
                    892: 	    $parts_with_displayduedate = 
                    893: 		scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
                    894: 	} else {
                    895: 	    $parts_with_displayduedate = 0;
                    896: 	}
                    897: 	if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
                    898: 	    $temp_file = Apache::File->new('>'.$filename);
                    899: 	    print $temp_file "$duetime\n";
                    900: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    901: 		if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
                    902: 		    $frontmatter .= $begin_doc.
                    903: 			'\textit{Due date: '.$duedate.'} '.$toc_line;
                    904: 		} else {
                    905: 		    $frontmatter.= $begin_doc.$toc_line;
                    906: 		    if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    907: 		}
                    908: 	    } else {
1.381     albertel  909: 		$frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319     foxr      910: 	    }
                    911: 	} else {
                    912: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    913: 		$frontmatter .= $begin_doc.$toc_line;
                    914: 		if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    915: 	    } else {
1.381     albertel  916: 		$frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319     foxr      917: 	    }
                    918: 	}
                    919: 	$result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
                    920:     }
                    921: 
1.159     albertel  922:     my $status=$Apache::inputtags::status['-1'];
                    923:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    924: 	$target eq 'tex') {
1.249     albertel  925: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159     albertel  926: 	    # if part is zero, no <part>s existed, so we need to the grading
1.249     albertel  927: 	    if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
                    928: 		&Apache::inputtags::grade;
1.324     albertel  929: 	    } elsif ($status eq 'NEEDS_CHECKIN') {
                    930: 		# no need to grade, and don't want to hide data
1.249     albertel  931: 	    } else {
                    932: 		# move any submission data to .hidden
                    933: 		&Apache::inputtags::hidealldata($Apache::inputtags::part);
                    934: 	    }
1.159     albertel  935: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                    936: 		  $Apache::inputtags::part eq '0' &&
1.252     albertel  937: 		  $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159     albertel  938: 	    # if part is zero, no <part>s existed, so we need show the current
                    939: 	    # grading status
                    940: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                    941: 	    $result.= $gradestatus;
                    942: 	}
                    943: 	if (
1.284     albertel  944: 	    (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159     albertel  945: 	    ($target eq 'answer') || ($target eq 'tex')
                    946: 	   ) {
1.227     albertel  947: 	    if ($target ne 'tex' &&
1.284     albertel  948: 		$env{'form.answer_output_mode'} ne 'tex') {
1.254     www       949: 		$result.="</form>";
1.348     albertel  950: 		$result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159     albertel  951: 	    }
                    952: 	    if ($target eq 'web') {
1.346     albertel  953: 		$result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159     albertel  954: 	    } elsif ($target eq 'tex') {
1.178     sakharuk  955: 		my $endminipage = '';
1.284     albertel  956: 		if (not $env{'form.problem_split'}=~/yes/) {
1.178     sakharuk  957: 		    $endminipage = '\end{minipage}';
                    958: 		}
1.284     albertel  959:                 if ($env{'form.print_discussions'} eq 'yes') {
1.263     sakharuk  960: 		    $result.=&Apache::lonxml::xmlend($target,$parser);
1.159     albertel  961: 		} else {
1.262     sakharuk  962: 		    $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284     albertel  963: 		    if (not $env{'request.symb'} =~ m/\.page_/) {
1.262     sakharuk  964: 			$result .= $endminipage.'\end{document} ';
                    965: 		    } else {
1.382     albertel  966: 			$result .= $endminipage;
1.262     sakharuk  967: 		    }
1.159     albertel  968: 		}
                    969: 	    }
                    970: 	}
                    971: 	if ($target eq 'grade') {
                    972: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                    973: 	    &finalize_storage();
                    974: 	}
1.284     albertel  975: 	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
                    976: 	    && $env{'form.answer_output_mode'} ne 'tex') {
1.346     albertel  977: 	    $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294     albertel  978: 	                        # normally we get it from above, but in CSTR
1.172     albertel  979: 	                        # we always show answer mode too.
1.159     albertel  980: 	}
                    981:     } elsif ($target eq 'meta') {
                    982: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel  983: 	    @Apache::inputtags::response=();
1.159     albertel  984: 	    $result=&Apache::response::mandatory_part_meta;
                    985: 	}
1.215     albertel  986: 	$result.=&Apache::response::meta_part_order();
1.258     albertel  987: 	$result.=&Apache::response::meta_response_order();
1.159     albertel  988:     } elsif ($target eq 'edit') {
                    989: 	&Apache::lonxml::debug("in end_problem with $target, edit");
1.314     albertel  990: 	$result .= &problem_edit_footer();
1.320     albertel  991:     } elsif ($target eq 'modified') {
                    992: 	 $result .= $token->[2];
1.159     albertel  993:     }
1.155     albertel  994: 
1.284     albertel  995:     if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177     albertel  996: 	&Apache::inputtags::check_for_duplicate_ids();
                    997:     }
1.204     albertel  998: 
                    999:     &reset_problem_globals('problem');
1.159     albertel 1000: 
                   1001:     return $result;
1.48      albertel 1002: }
                   1003: 
1.108     albertel 1004: 
1.48      albertel 1005: sub start_library {
1.159     albertel 1006:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343     albertel 1007:     my ($result,$form_tag_start);
1.371     albertel 1008:     if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244     albertel 1009: 	&init_problem_globals('library');
                   1010: 	$Apache::lonhomework::type='problem';
                   1011:     }
1.159     albertel 1012:     if ($target eq 'edit') {
1.343     albertel 1013: 	($result,$form_tag_start)=
                   1014: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1015: 			'Edit');
                   1016: 	$result.=$form_tag_start.&problem_edit_header();
1.159     albertel 1017: 	my $temp=&Apache::edit::insertlist($target,$token);
                   1018: 	$result.=$temp;
                   1019:     } elsif ($target eq 'modified') {
                   1020: 	$result=$token->[4];
1.340     albertel 1021:     } elsif (($target eq 'web' || $target eq 'webgrade')
1.371     albertel 1022: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340     albertel 1023: 	     && $env{'request.state'} eq "construct" ) {
1.159     albertel 1024: 	my $name=&get_resource_name($parstack,$safeeval);
1.343     albertel 1025: 	($result,$form_tag_start)=
                   1026: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1027: 			$name);
1.159     albertel 1028: 	my $rndseed=&setup_rndseed($safeeval);
1.343     albertel 1029: 	$result.=" \n $form_tag_start".	
1.159     albertel 1030: 		  '<input type="hidden" name="submitted" value="yes" />';
                   1031: 	$result.=&problem_web_to_edit_header($rndseed);
                   1032:     }
                   1033:     return $result;
1.48      albertel 1034: }
                   1035: 
                   1036: sub end_library {
1.159     albertel 1037:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1038:     my $result='';
                   1039:     if ($target eq 'edit') {
                   1040: 	$result=&problem_edit_footer();
1.371     albertel 1041:     } elsif ($target eq 'web' 
                   1042: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library') 
                   1043: 	     && $env{'request.state'} eq "construct") {
1.349     albertel 1044: 	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159     albertel 1045:     }
1.371     albertel 1046:     if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
                   1047: 	&reset_problem_globals('library');
                   1048:     }
1.159     albertel 1049:     return $result;
1.197     www      1050: }
                   1051: 
                   1052: sub start_definetag {
1.326     albertel 1053:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197     www      1054: 
                   1055:     my $result;
                   1056: 
                   1057:     my $name = $token->[2]->{'name'};
1.326     albertel 1058:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.197     www      1059:     if ($name=~/^\//) {
                   1060: 	$result=
                   1061:  '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
                   1062:     } else {
                   1063: 	$result=
                   1064:  '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
                   1065:     }
                   1066:     $skip=~s/\</\&lt\;/gs;
                   1067:     $skip=~s/\>/\&gt\;/gs;
                   1068:     $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
                   1069:     return $result;
                   1070: }
                   1071: 
                   1072: sub end_definetag {
                   1073:     return '';
1.1       albertel 1074: }
                   1075: 
                   1076: sub start_block {
1.201     albertel 1077:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel 1078: 
                   1079:     my $result;
1.1       albertel 1080: 
1.339     albertel 1081:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer'  ||
                   1082: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159     albertel 1083: 	my $code = $token->[2]->{'condition'};
1.385   ! albertel 1084: 	if (defined($code) && $code ne '') {
1.137     albertel 1085: 	    if (!$Apache::lonxml::default_homework_loaded) {
                   1086: 		&Apache::lonxml::default_homework_load($safeeval);
                   1087: 	    }
1.131     albertel 1088: 	    $result = &Apache::run::run($code,$safeeval);
                   1089: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                   1090: 	} else {
                   1091: 	    $result='1';
                   1092: 	}
                   1093: 	if ( ! $result ) {
1.201     albertel 1094: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel 1095: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1096: 	}
                   1097: 	$result='';
                   1098:     } elsif ($target eq 'edit') {
                   1099: 	$result .=&Apache::edit::tag_start($target,$token);
                   1100: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                   1101: 					  $token,40);
                   1102: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1103:     } elsif ($target eq 'modified') {
                   1104: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1105: 						     $safeeval,'condition');
                   1106: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel 1107:     }
1.131     albertel 1108:     return $result;
1.1       albertel 1109: }
                   1110: 
                   1111: sub end_block {
1.167     www      1112:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1113:     my $result;
                   1114:     if ($target eq "edit") {
                   1115: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1116:     }
                   1117:     return $result;
                   1118: }
                   1119: 
                   1120: sub start_languageblock {
1.201     albertel 1121:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www      1122: 
                   1123:     my $result;
                   1124: 
1.339     albertel 1125:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1126: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201     albertel 1127: 	my $include = $token->[2]->{'include'};
                   1128: 	my $exclude = $token->[2]->{'exclude'};
                   1129:         my %languages=&Apache::loncommon::display_languages();
                   1130:         $result='1';
                   1131: 	if ($include) {
                   1132:             $result='';
                   1133:             foreach (split(/\,/,$include)) {
                   1134:                 if ($languages{$_}) { $result='1'; }
                   1135:             }
                   1136: 	}
                   1137:         if ($exclude) {
                   1138:             foreach (split(/\,/,$exclude)) {
                   1139:                 if ($languages{$_}) { $result='0'; }
                   1140:             }
                   1141: 	}
                   1142: 	if ( ! $result ) {
                   1143: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                   1144: 						   $style);
                   1145: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1146: 	}
                   1147: 	$result='';
1.167     www      1148:     } elsif ($target eq 'edit') {
                   1149: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1150: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www      1151: 					  $token,40);
1.211     albertel 1152: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www      1153: 					  $token,40);
                   1154: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1155:     } elsif ($target eq 'modified') {
                   1156: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel 1157: 						     $safeeval,'include',
                   1158: 						     'exclude');
1.167     www      1159: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1160:     }
                   1161:     return $result;
                   1162: }
                   1163: 
                   1164: sub end_languageblock {
1.170     www      1165:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1166:     my $result;
1.201     albertel 1167:     if ($target eq "edit") {
1.170     www      1168: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1169:     }
                   1170:     return $result;
                   1171: }
                   1172: 
                   1173: sub start_instructorcomment {
1.201     albertel 1174:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www      1175: 
                   1176:     my $result;
                   1177: 
1.339     albertel 1178:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1179: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284     albertel 1180:         $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
                   1181: 	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201     albertel 1182: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                   1183: 						   $parser,$style);
1.170     www      1184: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1185: 	}
                   1186: 	$result='';
                   1187:     } elsif ($target eq 'edit') {
                   1188: 	$result .=&Apache::edit::tag_start($target,$token);
                   1189: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1190:     }
                   1191:     return $result;
                   1192: }
                   1193: 
                   1194: sub end_instructorcomment {
1.159     albertel 1195:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1196:     my $result;
                   1197:     if ($target eq "edit") {
                   1198: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1199:     }
                   1200:     return $result;
1.4       tsai     1201: }
                   1202: 
                   1203: sub start_while {
1.326     albertel 1204:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1205: 
1.160     albertel 1206:     my $result;
1.339     albertel 1207:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1208: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 1209: 	my $code = $token->[2]->{'condition'};
1.4       tsai     1210: 
1.160     albertel 1211: 	push( @Apache::structuretags::whileconds, $code);
                   1212: 	if (!$Apache::lonxml::default_homework_loaded) {
                   1213: 	    &Apache::lonxml::default_homework_load($safeeval);
                   1214: 	}
                   1215: 	my $result = &Apache::run::run($code,$safeeval);
1.326     albertel 1216: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160     albertel 1217: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel 1218: 	push( @Apache::structuretags::whileline, $token->[5]);
                   1219: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel 1220: 	if ( $result ) {
                   1221: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                   1222: 	}
                   1223:     } elsif ($target eq 'edit') {
                   1224: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1225: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel 1226: 					  $token,40);
                   1227: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1228:     } elsif ($target eq 'modified') {
                   1229: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1230: 						     $safeeval,'condition');
                   1231: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel 1232:     }
1.160     albertel 1233:     return $result;
1.4       tsai     1234: }
                   1235: 
                   1236: sub end_while {
1.159     albertel 1237:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1238:     my $result;
                   1239: 
1.339     albertel 1240:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1241: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 1242: 	my $code = pop(@Apache::structuretags::whileconds);
                   1243: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel 1244: 	my $line = pop(@Apache::structuretags::whileline);
                   1245: 	my $return = &Apache::run::run($code,$safeeval);
                   1246: 	my $starttime=time;
                   1247: 	my $error=0;
                   1248: 	while ($return) {
                   1249: 	    if (time-$starttime >
                   1250: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378     albertel 1251: 		$return = 0; $error=1; next;
1.161     albertel 1252: 	    }
                   1253: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
1.380     albertel 1254: 	    if ($target eq 'grade' || $target eq 'answer' ||
                   1255: 		$target eq 'analyze') {
                   1256: 		# grade/answer/analyze should produce no output but if we
                   1257: 		# are redirecting, the redirecter should know what to do
                   1258: 		# with the output
                   1259: 		if (!$Apache::lonxml::redirection) { undef($result); }
                   1260: 	    }
1.161     albertel 1261: 	    $return = &Apache::run::run($code,$safeeval);
                   1262: 	}
                   1263: 	if ($error) {
1.270     albertel 1264: 	    &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 1265: 	}
                   1266:     } elsif ($target eq "edit") {
                   1267: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel 1268:     }
1.160     albertel 1269:     return $result;
1.1       albertel 1270: }
1.6       tsai     1271: 
1.160     albertel 1272: # <randomlist show="1">
1.6       tsai     1273: #  <tag1>..</tag1>
                   1274: #  <tag2>..</tag2>
                   1275: #  <tag3>..</tag3>
1.160     albertel 1276: #  ...
1.6       tsai     1277: # </randomlist>
                   1278: sub start_randomlist {
1.326     albertel 1279:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1280:     my $result;
1.339     albertel 1281:     if ($target eq 'answer' || $target eq 'grade'   || $target eq 'web' ||
                   1282: 	$target eq 'tex'    || $target eq 'analyze' || $target eq 'webgrade') {
1.331     albertel 1283: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305     albertel 1284: 	my $b_parser= HTML::LCParser->new(\$body);
                   1285: 	$b_parser->xml_mode(1);
                   1286: 	$b_parser->marked_sections(1);
1.159     albertel 1287: 	my $b_tok;
                   1288: 	my @randomlist;
                   1289: 	my $list_item;
                   1290: 	while($b_tok = $b_parser->get_token() ) {
                   1291: 	    if($b_tok->[0] eq 'S') { # start tag
                   1292: 		# get content of the tag until matching end tag
                   1293: 		# get all text upto the matching tag
                   1294: 		# and push the content into @randomlist
                   1295: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                   1296: 							   $b_parser);
                   1297: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                   1298: 		push(@randomlist,$list_item);
                   1299: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                   1300:                 #         $list_item</b>";
                   1301: 	    }
                   1302: 	    if($b_tok->[0] eq 'T') { # text
                   1303: 		# what to do with text in between tags?
                   1304: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                   1305: 	    }
                   1306: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                   1307: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                   1308: 	    # }
                   1309: 	}
1.303     albertel 1310: 	if (@randomlist) {
                   1311: 	    my @idx_arr = (0 .. $#randomlist);
                   1312: 	    &Apache::structuretags::shuffle(\@idx_arr);
                   1313: 	    my $bodytext = '';
                   1314: 	    my $show=$#randomlist;
                   1315: 	    my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                   1316: 	    $showarg--;
                   1317: 	    if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
                   1318: 	    for(0 .. $show) {
                   1319: 		$bodytext .= "$randomlist[ $idx_arr[$_] ]";
                   1320: 	    }
                   1321: 	    &Apache::lonxml::newparser($parser,\$bodytext);
1.159     albertel 1322: 	}
                   1323:     } elsif ($target eq 'edit' ) {
                   1324: 	$result .=&Apache::edit::tag_start($target,$token);
                   1325: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                   1326: 					   $token,5);
                   1327: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1328:     } elsif ($target eq 'modified' ) {
                   1329: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1330: 						     $safeeval,'show');
                   1331: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1332:     }
                   1333:     return $result;
1.7       tsai     1334: }
                   1335: 
                   1336: sub shuffle {
                   1337:     my $a=shift;
                   1338:     my $i;
1.303     albertel 1339:     if (ref($a) eq 'ARRAY' && @$a) {
1.251     albertel 1340: 	&Apache::response::pushrandomnumber();
1.159     albertel 1341: 	for($i=@$a;--$i;) {
                   1342: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                   1343: 	    next if $i == $j;
                   1344: 	    @$a[$i,$j] = @$a[$j,$i];
                   1345: 	}
1.251     albertel 1346: 	&Apache::response::poprandomnumber();
1.7       tsai     1347:     }
1.6       tsai     1348: }
                   1349: 
                   1350: sub end_randomlist {
1.159     albertel 1351:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1352:     my $result;
                   1353:     if ($target eq 'edit' ) {
                   1354: 	$result=&Apache::edit::tag_end($target,$token,
                   1355: 				       'End Randomly Parsed Block');
                   1356:     }
                   1357:     return $result;
1.6       tsai     1358: }
                   1359: 
1.283     albertel 1360: sub ordered_show_check {
                   1361:     my $last_part=$Apache::inputtags::partlist[-2];
                   1362:     my $in_order=
                   1363: 	&Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
                   1364:     my $in_order_show=1;
                   1365:     if ($last_part ne '0' && lc($in_order) eq 'yes') {
                   1366: 	$in_order_show=&Apache::response::check_status($last_part);
                   1367:     }
                   1368:     return $in_order_show;
                   1369: }
                   1370: 
1.11      albertel 1371: sub start_part {
1.326     albertel 1372:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321     albertel 1373:     if (!$Apache::lonxml::metamode) {
                   1374: 	&Apache::lonxml::startredirection(); # we'll use redirection to fix up 
                   1375: 	                                     # duedates.
                   1376:     }
1.159     albertel 1377:     my $result='';
                   1378:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.296     albertel 1379:     if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1.159     albertel 1380:     $Apache::inputtags::part=$id;
1.177     albertel 1381:     push(@Apache::inputtags::partlist,$id);
                   1382:     @Apache::inputtags::response=();
1.159     albertel 1383:     @Apache::inputtags::previous=();
                   1384:     @Apache::inputtags::previous_version=();
1.241     albertel 1385:     $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159     albertel 1386:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259     albertel 1387:     my $newtype=&Apache::lonnet::EXT("resource.$id.type");
                   1388:     if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283     albertel 1389:     my $in_order_show=&ordered_show_check();
1.214     albertel 1390:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259     albertel 1391:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209     albertel 1392:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1393: 
                   1394:     if ($target eq 'meta') {
1.224     www      1395: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   1396: 	return &Apache::response::mandatory_part_meta.
                   1397: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 1398:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   1399: 	     $target eq 'answer' || $target eq 'tex') {
1.283     albertel 1400: 	if ($hidden || !$in_order_show) {
1.326     albertel 1401: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159     albertel 1402: 	} else {
                   1403: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   1404: 	    push (@Apache::inputtags::status,$status);
                   1405: 	    my $expression='$external::datestatus="'.$status.'";';
                   1406: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   1407: 	    &Apache::run::run($expression,$safeeval);
1.284     albertel 1408: 	    if ($env{'request.state'} eq 'construct') {
1.241     albertel 1409: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 1410: 	    }
1.216     albertel 1411: 	    if (( $status eq 'CLOSED' ) ||
                   1412: 		( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 1413: 		( $status eq 'NOT_YET_VIEWED') ||
1.216     albertel 1414: 		( $status eq 'BANNED') ||
                   1415: 		( $status eq 'UNAVAILABLE') ||
                   1416: 		( $status eq 'INVALID_ACCESS')) {
1.326     albertel 1417: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
                   1418: 							   $style);
1.159     albertel 1419: 		if ( $target eq "web" ) {
1.211     albertel 1420: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 1421: 		} elsif ( $target eq 'tex' ) {
1.284     albertel 1422: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.211     albertel 1423: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 1424: 		    } else {
1.211     albertel 1425: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 1426: 		    }
1.159     albertel 1427: 		}
                   1428: 	    } else {
                   1429: 		if ($target eq 'tex') {
1.284     albertel 1430: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.264     sakharuk 1431: 			if ($$tagstack[-2] eq 'td') {
                   1432: 			    $result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1433: 			} else {
                   1434: 			    $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1435: 			}
1.195     sakharuk 1436: 		    }
1.159     albertel 1437: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284     albertel 1438: 		    my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222     sakharuk 1439: 		    my @allkeys = split /,/,$allkeys;
                   1440: 		    my $allow_print_points = 0;
                   1441: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 1442: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 1443: 			    if ($1 ne '0') {$allow_print_points=1;}
                   1444: 			}
                   1445: 		    }
1.275     albertel 1446: 		    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   1447: 		    if (defined($maxtries) && $maxtries < 0) {
                   1448: 			$allow_print_points=0;
                   1449: 		    }
1.302     albertel 1450: 		    if (lc($env{'course.'.$env{'request.course.id'}.
                   1451: 				    '.disableexampointprint'}) eq 'yes') {
                   1452: 			$allow_print_points=0;
                   1453: 		    }
1.222     sakharuk 1454: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233     www      1455: 		} elsif ($target eq 'web') {
1.356     www      1456: 		    $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159     albertel 1457: 		}
                   1458: 	    }
                   1459: 	}
                   1460:     } elsif ($target eq 'edit') {
                   1461: 	$result.=&Apache::edit::tag_start($target,$token);
                   1462: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   1463: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      1464: 	    '&nbsp;&nbsp;'.
                   1465: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 1466: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1467:     } elsif ($target eq 'modified') {
                   1468: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 1469: 						     $safeeval,'id','display');
1.159     albertel 1470: 	if ($constructtag) {
1.225     albertel 1471: 	    #limiting ids to only letters numbers, and space
1.224     www      1472: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 1473: 	    $result = &Apache::edit::rebuild_tag($token);
                   1474: 	}
                   1475:     }
                   1476:     return $result;
1.11      albertel 1477: }
                   1478: 
                   1479: sub end_part {
1.159     albertel 1480:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1481:     &Apache::lonxml::debug("in end_part $target ");
                   1482:     my $status=$Apache::inputtags::status['-1'];
                   1483:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283     albertel 1484:     my $in_order_show=&ordered_show_check();
1.321     albertel 1485:     my $result;
                   1486:     if (!$Apache::lonxml::metamode) {
                   1487: 	$result = &Apache::lonxml::endredirection(); # started in &start_part
1.329     albertel 1488: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel 1489:     }
1.312     albertel 1490:     if ($target eq 'grade') {
1.249     albertel 1491: 	if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283     albertel 1492: 	    !$hidden && $in_order_show) {
1.311     foxr     1493: 	    $result.=&Apache::inputtags::grade;
1.249     albertel 1494: 	} else {
                   1495: 	    # move any submission data to .hidden
                   1496: 	    &Apache::inputtags::hidealldata($Apache::inputtags::part);
                   1497: 	}
1.283     albertel 1498:     } elsif (($target eq 'web' || $target eq 'tex') &&
                   1499: 	     !$hidden && $in_order_show) {
1.159     albertel 1500: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   1501: 							$target);
1.212     albertel 1502: 	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
                   1503: 	    $gradestatus='';
                   1504: 	}
1.311     foxr     1505: 	$result.=$gradestatus;
1.265     sakharuk 1506: 	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';} 
1.181     albertel 1507:     } elsif ($target eq 'edit') {
1.311     foxr     1508: 	$result.=&Apache::edit::end_table();
1.322     albertel 1509:     } elsif ($target eq 'modified') {
                   1510: 	 $result .= $token->[2];
1.159     albertel 1511:     }
                   1512:     pop @Apache::inputtags::status;
                   1513:     $Apache::inputtags::part='';
1.295     albertel 1514:     $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159     albertel 1515:     return $result;
1.11      albertel 1516: }
1.1       albertel 1517: 
1.25      albertel 1518: sub start_preduedate {
1.326     albertel 1519:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339     albertel 1520:     if ($target eq 'web' || $target eq 'grade'    || $target eq 'answer' ||
                   1521: 	$target eq 'tex' || $target eq 'webgrade') {
1.236     albertel 1522: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300     albertel 1523: 	if (!$Apache::lonhomework::scantronmode &&
                   1524: 	    $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 1525: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   1526: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326     albertel 1527: 	    &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159     albertel 1528: 	}
1.24      albertel 1529:     }
1.159     albertel 1530:     return '';
1.24      albertel 1531: }
                   1532: 
1.25      albertel 1533: sub end_preduedate {
1.159     albertel 1534:     return '';
1.24      albertel 1535: }
                   1536: 
1.369     foxr     1537: # In all the modes where <postanswerdate> text is 
                   1538: # displayable,  all we do is eat up the text between the start/stop
                   1539: # tags if the conditions are not right to display it.
1.25      albertel 1540: sub start_postanswerdate {
1.326     albertel 1541:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370     foxr     1542:     my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
                   1543: 	&Apache::lonnet::allowed('pav',
                   1544: 			   $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369     foxr     1545:     if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370     foxr     1546: 	$target eq 'tex' ) {
1.300     albertel 1547: 	if ($Apache::lonhomework::scantronmode ||
1.370     foxr     1548: 	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
                   1549: 	    (($target eq 'tex') && !$pav)) {
1.326     albertel 1550: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159     albertel 1551: 	}
                   1552:     }
                   1553:     return '';
1.24      albertel 1554: }
                   1555: 
1.25      albertel 1556: sub end_postanswerdate {
1.159     albertel 1557:     return '';
1.24      albertel 1558: }
                   1559: 
1.25      albertel 1560: sub start_notsolved {
1.326     albertel 1561:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1562:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339     albertel 1563: 	$target eq 'tex' || $target eq 'webgrade') {
1.159     albertel 1564: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   1565: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 1566: 	if ($gradestatus =~ /^correct/ &&
                   1567: 	    &Apache::response::show_answer()) {
1.159     albertel 1568: 	    &Apache::lonxml::debug("skipping");
1.326     albertel 1569: 	    &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159     albertel 1570: 	}
1.24      albertel 1571:     }
1.159     albertel 1572:     return '';
1.24      albertel 1573: }
                   1574: 
1.25      albertel 1575: sub end_notsolved {
1.159     albertel 1576:     return '';
1.24      albertel 1577: }
                   1578: 
                   1579: sub start_solved {
1.326     albertel 1580:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1581:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1582: 	$target eq 'tex') {
                   1583: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 1584: 	if ($gradestatus !~ /^correct/ ||
                   1585: 	    !&Apache::response::show_answer()) {
1.326     albertel 1586: 	    &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159     albertel 1587: 	}
1.24      albertel 1588:     }
1.159     albertel 1589:     return '';
1.24      albertel 1590: }
                   1591: 
                   1592: sub end_solved {
1.248     albertel 1593:     return '';
                   1594: }
                   1595: 
                   1596: sub start_problemtype {
1.326     albertel 1597:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248     albertel 1598:     my $result;
1.339     albertel 1599:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1600: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248     albertel 1601: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
                   1602: 	if (!defined($mode)) { $mode='show'; }
                   1603: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
                   1604: 	my $found=0;
                   1605: 	foreach my $type (split(',',$for)) {
                   1606: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
                   1607: 	}
                   1608: 	if ($mode eq 'show' && !$found) {
1.326     albertel 1609: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 1610: 	}
                   1611: 	if ($mode eq 'hide' && $found) {
1.326     albertel 1612: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 1613: 	}
                   1614:     } elsif ($target eq 'edit') {
                   1615: 	$result .=&Apache::edit::tag_start($target,$token);
                   1616: 	$result.=&Apache::edit::select_arg('Mode:','mode',
                   1617: 					   [['show','Show'],
                   1618: 					    ['hide','Hide']]
                   1619: 					   ,$token);
                   1620: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
                   1621: 					     [ ['exam','Exam/Quiz Problem'],
                   1622: 					       ['survey','Survey'],
                   1623: 					       ['problem','Homework Problem'] ]
                   1624: 					     ,$token);
                   1625: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1626:     } elsif ($target eq 'modified') {
                   1627: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1628: 						     $safeeval,'mode','for');
                   1629: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1630:     }
                   1631:     return $result;
                   1632: }
                   1633: 
                   1634: sub end_problemtype {
1.159     albertel 1635:     return '';
1.24      albertel 1636: }
1.34      albertel 1637: 
                   1638: sub start_startouttext {
1.159     albertel 1639:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1640:     my @result=(''.'');
                   1641:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
                   1642:     return (@result);
1.34      albertel 1643: }
1.159     albertel 1644: 
1.34      albertel 1645: sub end_startouttext {
1.326     albertel 1646:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1647:     my $result='';
                   1648:     my $text='';
                   1649: 
                   1650:     if ($target eq 'edit') {
1.326     albertel 1651: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211     albertel 1652: 	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
                   1653: <td>".&mt('Delete:').
1.159     albertel 1654:                  &Apache::edit::deletelist($target,$token)
                   1655: 		 ."</td>
1.42      albertel 1656: <td>".
1.159     albertel 1657:                  &Apache::edit::insertlist($target,$token).
1.362     albertel 1658: 		 '</td><td align="right" valign="top">' .
                   1659: 		 &Apache::loncommon::helpLatexCheatsheet().
1.159     albertel 1660: 		 &Apache::edit::end_row().
1.362     albertel 1661:                  &Apache::edit::start_spanning_row()."\n".
1.255     www      1662: 		 &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159     albertel 1663:     }
                   1664:     if ($target eq 'modified') {
1.219     albertel 1665: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 1666:     }
                   1667:     if ($target eq 'tex') {
                   1668: 	$result .= '\noindent ';
                   1669:     }
                   1670:     return $result;
1.34      albertel 1671: }
1.159     albertel 1672: 
1.34      albertel 1673: sub start_endouttext {
1.159     albertel 1674:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1675:     my $result='';
                   1676:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   1677:     if ($target eq "modified") {
                   1678: 	$result='<endouttext />'.
1.377     albertel 1679: 	    &Apache::edit::handle_insertafter('startouttext');
                   1680:     }
1.159     albertel 1681:     return $result;
1.34      albertel 1682: }
1.159     albertel 1683: 
1.34      albertel 1684: sub end_endouttext {
1.159     albertel 1685:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1686:     my @result=('','');
                   1687:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   1688:     return (@result);
1.34      albertel 1689: }
1.159     albertel 1690: 
1.45      albertel 1691: sub delete_startouttext {
1.326     albertel 1692:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   1693:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159     albertel 1694:     my $text=$$parser['-1']->get_text("/endouttext");
                   1695:     my $ntoken=$$parser['-1']->get_token();
                   1696:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   1697:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   1698:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   1699:     # they did the last time round
                   1700:     &Apache::lonxml::increasedepth($ntoken);
                   1701:     &Apache::lonxml::decreasedepth($ntoken);
                   1702:     return 1;
1.193     www      1703: }
                   1704: 
                   1705: sub start_simpleeditbutton {
                   1706:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1707:     my $result='';
1.284     albertel 1708:     if (($env{'form.simple_edit_button'} ne 'off') &&
1.273     albertel 1709: 	($target eq 'web') &&
1.330     albertel 1710:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284     albertel 1711:         my $url=$env{'request.noversionuri'};
1.193     www      1712:         $url=~s/\?.*$//;
1.367     albertel 1713: 	my ($symb) = &Apache::lonnet::whichuser();
1.194     www      1714: 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356     www      1715:                 '<a href="'.$url.'/smpedit?symb='.&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      1716: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193     www      1717:     }
                   1718:     return $result;
                   1719: }
                   1720: 
                   1721: sub end_simpleeditbutton {
                   1722:     return '';
1.45      albertel 1723: }
1.34      albertel 1724: 
1.1       albertel 1725: 1;
                   1726: __END__

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