Annotation of loncom/homework/structuretags.pm, revision 1.288

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

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