Annotation of loncom/homework/structuretags.pm, revision 1.303

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

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