Annotation of loncom/homework/structuretags.pm, revision 1.248

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.248   ! albertel    4: # $Id: structuretags.pm,v 1.247 2004/05/04 19:32:28 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: #
1.33      albertel   28: # 2/19 Guy
1.44      ng         29: # 6/26/2001 fixed extra web display at end of <web></web> tags
1.60      www        30: # 8/17,8/18,8/20 Gerd Kortemeyer
1.54      www        31: 
1.133     sakharuk   32: 
1.1       albertel   33: package Apache::structuretags; 
                     34: 
                     35: use strict;
                     36: use Apache::lonnet;
1.101     sakharuk   37: use Apache::File();
1.147     www        38: use Apache::lonmenu;
1.210     albertel   39: use Apache::lonlocal;
1.231     sakharuk   40: use Apache::lonxml;
1.1       albertel   41: 
1.78      harris41   42: BEGIN {
1.248   ! albertel   43:     &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   44: }
                     45: 
                     46: sub start_web {
1.159     albertel   47:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200     albertel   48:     my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
                     49:     if ($target eq 'web') {
                     50: 	return $bodytext;
1.159     albertel   51:     }
                     52:     return '';
1.10      albertel   53: }
                     54: 
                     55: sub end_web {
1.44      ng         56:     return '';
1.10      albertel   57: }
                     58: 
                     59: sub start_tex {
1.159     albertel   60:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198     sakharuk   61:     my $result='';
1.200     albertel   62:     my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
                     63:     if ($target eq 'tex') {
                     64: 	return $bodytext.' ';
1.159     albertel   65:     }
1.198     sakharuk   66:     return $result;;
1.10      albertel   67: }
                     68: 
                     69: sub end_tex {
1.44      ng         70:     return '';
1.9       albertel   71: }
                     72: 
1.48      albertel   73: sub page_start {
1.159     albertel   74:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                     75:     my %found;
1.207     albertel   76:     foreach my $taginside (@$tagstack) {
1.159     albertel   77: 	foreach my $taglookedfor ('html','body','form') {
                     78: 	    if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
                     79: 	}
                     80:     }
                     81: 
                     82:     my $result;
                     83:     my $head_tag_start;
                     84:     if (!defined($found{'html'})) {
                     85: 	$result=&Apache::londefdef::start_html($target,$token,$tagstack,
                     86: 					       $parstack,$parser,$safeeval);
1.218     albertel   87: 	$head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
1.159     albertel   88:     }
                     89:     my $body_tag_start;
                     90:     if (!defined($found{'body'})) {
                     91: 	$body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
                     92: 	    'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
                     93: 	my $background=&Apache::lonxml::get_param('background',$parstack,
                     94: 						  $safeeval);
1.199     www        95: 	if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
1.159     albertel   96: 	if ($background) {
                     97: 	    $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
                     98: 		$background;
                     99: 	    $body_tag_start.='background="'.$background.'" ';
                    100: 	} else {
                    101: 	    my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
                    102: 						   $safeeval);
1.199     www       103: 	    if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
1.159     albertel  104: 		$body_tag_start.='bgcolor="'.$bgcolor.'" ';
                    105: 	    } else {
                    106: 		$body_tag_start.='bgcolor="#ffffff"';
                    107: 	    }
1.199     www       108: 	}
                    109: 	if ($ENV{'browser.fontenhance'} eq 'on') {
                    110: 	    $body_tag_start.=' style="font-size: x-large;" ';
1.159     albertel  111: 	}
                    112: 	$body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
                    113: 	if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
1.165     albertel  114: 	    my ($symb,undef,undef,undef,$publicuser)=
                    115: 		&Apache::lonxml::whichuser();
                    116: 	    if ($symb eq '' && !$publicuser) {
1.159     albertel  117: 		my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
1.211     albertel  118: 		$help=&mt("Browsing resource, all submissions are temporary.")."<br />";
1.159     albertel  119: 		$body_tag_start.=$help;
                    120: 	    }
                    121: 	}
1.245     albertel  122: 	$body_tag_start.=&Apache::lonxml::message_location();
1.159     albertel  123:     }
                    124:     my $form_tag_start;
                    125:     if (!defined($found{'form'})) {
                    126: 	$form_tag_start='<form name="lonhomework" method="POST" action="'.
                    127: 	    $ENV{'request.uri'}.'">';
                    128:     }
                    129:     return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105     albertel  130: }
                    131: 
1.141     matthew   132: #use Time::HiRes();
1.105     albertel  133: sub get_resource_name {
1.159     albertel  134:     my ($parstack,$safeeval)=@_;
1.204     albertel  135:     if (defined($Apache::lonhomework::name)) {
                    136: 	return $Apache::lonhomework::name;
                    137:     }
1.159     albertel  138:     my $name=&Apache::lonnet::gettitle();
                    139:     if ($name eq '') {
                    140: 	$name=&Apache::lonnet::EXT('resource.title');
                    141: 	if ($name eq 'con_lost') { $name = ''; }
                    142:     }
1.204     albertel  143:     if ($name!~/\S+/) {
                    144: 	$name=$ENV{'request.uri'};
1.205     albertel  145: 	$name=~s-.*/([^/]+)$-$1-;
1.204     albertel  146:     }
1.159     albertel  147:     $Apache::lonhomework::name=$name;
                    148:     return $name;
1.105     albertel  149: }
                    150: 
                    151: sub setup_rndseed {
1.159     albertel  152:     my ($safeeval)=@_;
                    153:     my $rndseed;
1.162     albertel  154:     my ($symb)=&Apache::lonxml::whichuser();
1.247     albertel  155:     if ($ENV{'request.state'} eq "construct" || $symb eq '' ||
                    156:           $Apache::lonhomework::history{'resource.CODE'}) {
1.159     albertel  157: 	$rndseed=$ENV{'form.rndseed'};
                    158: 	if (!$rndseed) {
1.162     albertel  159: 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
                    160: 	    if (!$rndseed) {
                    161: 		$rndseed=time;
                    162: 	    }
1.237     albertel  163: 	    $ENV{'form.rndseed'}=$rndseed;
1.162     albertel  164: 	}
1.210     albertel  165: 	if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
                    166: 	    $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.190     albertel  167: 	    srand(time);
                    168: 	    $rndseed=int(rand(2100000000));
1.159     albertel  169: 	    $ENV{'form.rndseed'}=$rndseed;
1.180     albertel  170: 	    delete($ENV{'form.resetdata'});
                    171: 	    delete($ENV{'form.newrandomization'});
1.159     albertel  172: 	}
1.187     albertel  173: 	if (defined($rndseed) && $rndseed ne int($rndseed)) {
                    174: 	   $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
                    175:         }
1.247     albertel  176:         if ($Apache::lonhomework::history{'resource.CODE'}) {
                    177: 	   $rndseed=&Apache::lonnet::rndseed();
                    178: 	}
1.221     albertel  179: 	if ($safeeval) {
                    180: 	    &Apache::lonxml::debug("Setting rndseed to $rndseed");
                    181: 	    &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
                    182: 	}
1.159     albertel  183:     }
                    184:     return $rndseed;
1.105     albertel  185: }
                    186: 
                    187: sub problem_edit_header {
1.159     albertel  188:     return '<input type="hidden" name="submitted" value="edit" />
1.210     albertel  189:        <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243     matthew   190:        <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
                    191:        <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
                    192:        <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
                    193:        <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
                    194:        <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.229     www       195:        &Apache::loncommon::help_open_topic('Problem_Editor_XML_Index',
                    196: 					   'Problem Editing Help').'</td><td>'.
                    197:        &Apache::loncommon::help_open_faq(5).
                    198:        &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>'.
1.228     www       199:        '<table border="0"><tr><td bgcolor="#DDDDDD">';
1.105     albertel  200: }
                    201: 
                    202: sub problem_edit_footer {
1.210     albertel  203:     return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
                    204:     <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />';
1.105     albertel  205: }
                    206: 
1.235     albertel  207: sub option {
                    208:     my ($value,$name) = @_;
                    209:     my $result ="<option value='".$value."' ";
                    210:     if ($ENV{'form.'.$name} eq $value) {
                    211: 	$result.=" selected='on' ";
                    212:     }
                    213:     $result.='>';
                    214:     return $result;
                    215: }
                    216: 
1.105     albertel  217: sub problem_web_to_edit_header {
1.159     albertel  218:     my ($rndseed)=@_;
1.210     albertel  219:     my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
1.243     matthew   220:              <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
                    221:              <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
                    222:              <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
                    223:              <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210     albertel  224:              <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.175     albertel  225:               <input type="text" name="rndseed" width="10" value="'.
                    226: 	       $rndseed.'"
                    227:            onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.105     albertel  228:              <input type="checkbox" name="showallfoils" ';
1.159     albertel  229:     if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
1.228     www       230:     $result.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').
                    231: 	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
                    232: 	'<hr />';
1.235     albertel  233:     $result.="
                    234: <nobr>
                    235: Problem Status:
                    236: <select name='problemstate'>
                    237:   <option name=''></option>
                    238:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    239:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    240:   ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
                    241:   ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
                    242:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
                    243: </select>
                    244: </nobr>
                    245: <nobr>
                    246: Problem Type:
                    247: <select name='problemtype'>
                    248:   <option name=''></option>
1.242     albertel  249:   ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
                    250:   ".&option('problem','problemtype').&mt("Homework problem")."</option>
                    251:   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235     albertel  252: </select>
                    253: </nobr>
                    254: <nobr>
                    255: Feedback Mode:
                    256: <select name='problemstatus'>
                    257:   <option value=''></option>
1.242     albertel  258:   ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
                    259:   ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235     albertel  260: </select>
                    261: </nobr>
1.242     albertel  262: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235     albertel  263: <hr />";
1.159     albertel  264:     my $numtoanalyze=$ENV{'form.numtoanalyze'};
1.176     albertel  265:     if (!$numtoanalyze) { $numtoanalyze=20; }
1.210     albertel  266:     $result.= '<input type="submit" name="problemmode" value='.
                    267: 	&mt('"Calculate answers').'" /> for
1.136     albertel  268:              <input type="text" name="numtoanalyze" value="'.
1.210     albertel  269: 	     $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
                    270: 	     '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176     albertel  271: 						     '',undef,undef,300).
1.210     albertel  272: 						     '<hr />';
1.159     albertel  273:     return $result;
1.48      albertel  274: }
                    275: 
1.65      albertel  276: sub initialize_storage {
1.159     albertel  277:     %Apache::lonhomework::results=();
1.162     albertel  278:     %Apache::lonhomework::history=();
1.159     albertel  279:     my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162     albertel  280:     if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
1.159     albertel  281: 	%Apache::lonhomework::history=
                    282: 	    &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
                    283: 	my ($temp)=keys %Apache::lonhomework::history ;
                    284: 	&Apache::lonxml::debug("Return message of $temp");
                    285:     } else {
                    286: 	%Apache::lonhomework::history=
                    287: 	    &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                    288:     }
                    289:     #ignore error conditions
1.67      albertel  290:     my ($temp)=keys %Apache::lonhomework::history ;
1.159     albertel  291:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65      albertel  292: }
                    293: 
                    294: # -------------------------------------------------------------finalize_storage
                    295: # Stores away the result has to a student's environment
                    296: # checks form.grade_ for specific values, other wises stores
                    297: # to the running users environment
                    298: sub finalize_storage {
1.159     albertel  299:     my $result;
                    300:     my ($temp) = keys %Apache::lonhomework::results;
                    301:     if ( $temp ne '' ) {
                    302: 	my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162     albertel  303: 	if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
                    304: 	    $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};
1.159     albertel  305: 	    $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
                    306: 					$ENV{'request.uri'},'',$domain,$name);
                    307: 	    &Apache::lonxml::debug('Construct Store return message:'.$result);
                    308: 	} else {
                    309: 	    $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
                    310: 					    $symb,$courseid,$domain,$name);
                    311: 	    &Apache::lonxml::debug('Store return message:'.$result);
                    312: 	}
1.67      albertel  313:     }
1.159     albertel  314:     return $result;
1.65      albertel  315: }
                    316: 
                    317: sub checkout_msg {
1.211     albertel  318:     my %lt=&Apache::lonlocal::texthash( 
                    319: 		'resource'=>'The resource needs to be checked out',
                    320: 		'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
                    321:                 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
                    322:                 'checkout'=>'Check out Exam for Viewing',
                    323: 		'checkout?'=>'Check out Exam?');
1.159     albertel  324:     return (<<ENDCHECKOUT);
1.211     albertel  325: <h2>$lt{'resource'}</h2>
                    326:     <p>$lt{'id_expln'}</p>
                    327: <font color="red">
                    328: <p>$lt{'warning'}</p>
1.91      albertel  329: </font>
                    330: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
                    331: <input type="hidden" name="doescheckout" value="yes" />
1.211     albertel  332: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel  333: </form>
                    334: ENDCHECKOUT
                    335: }
                    336: 
1.204     albertel  337: sub init_problem_globals {
                    338:     my ($type)=@_;
                    339:     #initialize globals
                    340:     if ($type eq 'problem') {
                    341: 	$Apache::inputtags::part='0';
                    342: 	@Apache::inputtags::partlist=('0');
1.241     albertel  343: 
                    344: 	$Apache::lonhomework::problemstatus=&get_problem_status('0')
1.204     albertel  345:     } else {
                    346: 	$Apache::inputtags::part='';
                    347: 	@Apache::inputtags::partlist=();
                    348: 	$Apache::lonhomework::problemstatus='';	
                    349:     }
                    350:     @Apache::inputtags::responselist = ();
                    351:     @Apache::inputtags::importlist = ();
                    352:     @Apache::inputtags::previous=();
                    353:     @Apache::inputtags::previous_version=();
                    354:     $Apache::structuretags::printanswer='No';
                    355:     @Apache::structuretags::whileconds=();
                    356:     @Apache::structuretags::whilebody=();
                    357:     @Apache::structuretags::whileline=();
                    358:     $Apache::lonhomework::scantronmode=0;
                    359:     undef($Apache::lonhomework::name);
                    360: 
                    361: }
                    362: 
                    363: sub reset_problem_globals {
                    364:     my ($type)=@_;
                    365:     undef(%Apache::lonhomework::history);
                    366:     undef(%Apache::lonhomework::results);
                    367:     undef($Apache::inputtags::part);
1.208     albertel  368: #don't undef this, lonhomework.pm takes care of this, we use this to 
                    369: #detect if we try to do 2 problems in one file
                    370: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel  371:     undef($Apache::lonhomework::name);
                    372: }
                    373: 
1.241     albertel  374: sub set_problem_state {
1.240     albertel  375:     my ($part)=@_;
                    376:     if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
                    377: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                    378: 	    'correct_by_student';
                    379:     }
                    380: }
                    381: 
1.241     albertel  382: sub get_problem_status {
                    383:     my ($part)=@_;
                    384:     my $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                    385:     &Apache::lonxml::debug("problem status for $part is $problem_status");
                    386:     &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
                    387:     if ($ENV{'request.state'} eq 'construct' &&
                    388: 	defined($ENV{'form.problemstatus'})) {
                    389: 	$problem_status=$ENV{'form.problemstatus'};
                    390:     }
                    391:     return $problem_status;
                    392: }
                    393: 
1.9       albertel  394: sub start_problem {
1.159     albertel  395:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19      albertel  396: 
1.184     albertel  397:     if ( $Apache::inputtags::part ne '' ||
                    398: 	 $Apache::lonhomework::parsing_a_problem) {
                    399: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
                    400: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159     albertel  401: 	return '';
                    402:     }
1.184     albertel  403: 
                    404:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel  405:     &init_problem_globals('problem');
1.166     albertel  406: 
                    407:     if (defined($ENV{'scantron.maxquest'})) {
                    408: 	$Apache::lonhomework::scantronmode=1;
                    409:     }
1.161     albertel  410: 
1.246     albertel  411:     &initialize_storage();
1.159     albertel  412:     if ($target ne 'analyze') {
                    413: 	if ($target eq 'web') {
                    414: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238     albertel  415: 	}
1.241     albertel  416:        	if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159     albertel  417: 	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.237     albertel  418: 	if (($ENV{'request.state'} eq 'construct') &&
                    419: 	    defined($ENV{'form.problemtype'})) {
                    420: 	    $Apache::lonhomework::type=$ENV{'form.problemtype'};
                    421: 	}
1.240     albertel  422: 	&Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159     albertel  423:     }
1.164     albertel  424:     if ($Apache::lonhomework::type eq '' ) {
1.159     albertel  425: 	my $uri=$ENV{'request.uri'};
                    426: 	if ($uri=~/\.(\w+)$/) {
                    427: 	    $Apache::lonhomework::type=$1;
                    428: 	    &Apache::lonxml::debug("Using type of $1");
                    429: 	} else {
                    430: 	    $Apache::lonhomework::type='problem';
                    431: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                    432: 	}
1.87      albertel  433:     }
1.58      www       434: 
1.159     albertel  435:     #added vars to the scripting enviroment
1.213     albertel  436:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248   ! albertel  437:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel  438:     &Apache::run::run($expression,$safeeval);
1.159     albertel  439:     my $status;
                    440:     my $accessmsg;
                    441: 
                    442:     #should get back a <html> or the neccesary stuff to start XML/MathML
                    443:     my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    444: 	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    445:     if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
                    446: 
                    447:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
                    448:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    449: 	$target eq 'tex') {
                    450: 	#handle exam checkout
                    451: 	if ($Apache::lonhomework::type eq 'exam') {
                    452: 	    my $token=
                    453: 		$Apache::lonhomework::history{"resource.0.outtoken"};
                    454: 	    if (($ENV{'form.doescheckout'}) && (!$token)) {
                    455: 		$token=&Apache::lonxml::maketoken();
                    456: 		$Apache::lonhomework::history{"resource.0.outtoken"}=
                    457: 		    $token;
                    458: 	    }
                    459: 	    $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142     albertel  460: 	}
1.159     albertel  461: 
                    462: 	#handle rand seed in construction space
                    463: 	my $rndseed=&setup_rndseed($safeeval);
1.162     albertel  464: 	my ($symb)=&Apache::lonxml::whichuser();
1.163     albertel  465: 	if ($ENV{'request.state'} ne "construct" && $symb eq '') {
1.162     albertel  466: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
                    467: 		$rndseed.'" />'.
                    468: 		    '<input type="submit" name="resetdata"
1.211     albertel  469:                              value="'.&mt('New Problem Variation').'" />'.
1.164     albertel  470: 		    '<input type="hidden" name="username"
1.185     albertel  471:                              value="'.$ENV{'form.username'}.'" /> <br />';
1.162     albertel  472: 	}
1.159     albertel  473: 	($status,$accessmsg) = &Apache::lonhomework::check_access('0');
                    474: 	push (@Apache::inputtags::status,$status);
                    475: 	my $expression='$external::datestatus="'.$status.'";';
                    476: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                    477: 	&Apache::run::run($expression,$safeeval);
                    478: 	&Apache::lonxml::debug("Got $status");
                    479: 	if (( $status eq 'CLOSED' ) ||
                    480: 	    ( $status eq 'UNCHECKEDOUT') ||
                    481: 	    ( $status eq 'BANNED') ||
1.216     albertel  482: 	    ( $status eq 'UNAVAILABLE') ||
                    483: 	    ( $status eq 'INVALID_ACCESS')) {
1.159     albertel  484: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
                    485: 	    if ( $target eq "web" ) {
                    486: 		$result.= $head_tag_start.'</head>';
                    487: 		my $msg=$body_tag_start;
                    488: 		if ($status eq 'UNAVAILABLE') {
1.245     albertel  489: 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.159     albertel  490: 		} else {
1.245     albertel  491: 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159     albertel  492: 		}
1.216     albertel  493: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159     albertel  494: 		    $msg.='The problem '.$accessmsg;
                    495: 		} elsif ($status eq 'UNCHECKEDOUT') {
                    496: 		    $msg.=&checkout_msg;
                    497: 		}
                    498: 		$result.=$msg.'<br />';
                    499: 	    } elsif ($target eq 'tex') {
                    500: 		$result.='\begin{document}\noindent \vskip 1 mm  \begin{minipage}{\textwidth}\vskip 0 mm';
                    501: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel  502: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel  503: 		} else {
1.211     albertel  504: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel  505: 		}
                    506: 	    }
                    507: 	} elsif ($target eq 'web') {
                    508: 	    my $name= &get_resource_name($parstack,$safeeval);
1.227     albertel  509: 	    $result.="$head_tag_start<title>$name</title></head>
1.158     sakharuk  510:               $body_tag_start \n $form_tag_start".	
1.227     albertel  511: 	      '<input type="hidden" name="submitted" value="yes" />';
                    512: 	    # create a page header and exit
                    513: 	    if ($ENV{'request.state'} eq "construct") {
                    514: 		$result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
                    515: 	    }
                    516: 	    # if we are viewing someone else preserve that info
                    517: 	    if (defined $ENV{'form.grade_symb'}) {
                    518: 		foreach my $field ('symb','courseid','domain','username') {
                    519: 		    $result .= '<input type="hidden" name="grade_'.$field.
                    520: 			'" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
1.159     albertel  521: 		}
                    522: 	    }
                    523: 	} elsif ($target eq 'tex') {
1.192     sakharuk  524: 	    my $startminipage = '';
1.191     sakharuk  525: 	    if (not $ENV{'form.problem_split'}=~/yes/) {
1.192     sakharuk  526: 		$startminipage = '\begin{minipage}{\textwidth}';
1.178     sakharuk  527: 	    }
1.159     albertel  528: 	    my $id = $Apache::inputtags::part;
                    529: 	    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.223     sakharuk  530: 	    my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
                    531: 	    my @packages = split /,/,$packages;
                    532: 	    my $allow_print_points = 0;
                    533: 	    foreach my $partial_key (@packages) {
1.230     albertel  534: 		if ($partial_key=~m/^part_0$/) {
1.223     sakharuk  535: 		    $allow_print_points=1;
1.159     albertel  536: 		}
                    537: 	    }
                    538: 	    my $duedate = &Apache::lonnet::EXT("resource.$id.duedate"); 
                    539: 	    $duedate = POSIX::strftime("%c",localtime($duedate));
                    540: 	    my $temp_file;
                    541: 	    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
                    542: 	    if (-e $filename) {
                    543: 		$temp_file = Apache::File->new($filename);
                    544: 	    } else {
                    545: 		$temp_file = Apache::File->new('>>'.$filename);
                    546: 	    }
                    547: 	    my @due_file_content = <$temp_file>;
                    548: 	    my $due_file_content = $due_file_content[$#due_file_content];
                    549: 	    chomp $due_file_content;
1.231     sakharuk  550: 	    my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval));
1.159     albertel  551: 	    if ($due_file_content ne $duedate) {
                    552: 		$temp_file = Apache::File->new('>'.$filename);
                    553: 		print $temp_file "$duedate\n";
                    554: 		if (not $ENV{'request.symb'} =~ m/\.page_/) {
                    555: 		    if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.206     sakharuk  556: 			$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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  557: 		    } else {
1.206     sakharuk  558: 			$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159     albertel  559: 			if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
                    560: 		    }
1.104     sakharuk  561: 		} else {
1.159     albertel  562: 		    $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104     sakharuk  563: 		}
1.101     sakharuk  564: 	    } else {
1.159     albertel  565: 		if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.206     sakharuk  566: 		    $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';	
1.159     albertel  567: 		    if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
                    568: 		} else {
                    569: 		    $result .= '\vskip 1mm \\\\\\\\';
                    570: 		}
                    571: 	    }
1.99      sakharuk  572: 	}
1.159     albertel  573:     } elsif ($target eq 'edit') {
                    574: 	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
                    575: 	    &problem_edit_header();
1.226     albertel  576: 	$Apache::lonxml::warnings_error_header=
                    577: 	    &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  578: 	my $temp=&Apache::edit::insertlist($target,$token);
                    579: 	$result.=$temp;
                    580:     } elsif ($target eq 'modified') {
                    581: 	$result=$token->[4];
                    582: 	$result.=&Apache::edit::handle_insert();
                    583:     } else {
                    584: 	# page_start returned a starting result, delete it if we don't need it
                    585: 	$result = '';
1.99      sakharuk  586:     }
1.159     albertel  587:     return $result;
1.9       albertel  588: }
                    589: 
                    590: sub end_problem {
1.159     albertel  591:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    592:     my $result='';
                    593:     my $status=$Apache::inputtags::status['-1'];
                    594:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    595: 	$target eq 'tex') {
                    596: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
1.232     albertel  597: 	     ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode)) {
1.159     albertel  598: 	    # if part is zero, no <part>s existed, so we need to the grading
                    599: 	    &Apache::inputtags::grade;
                    600: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                    601: 		  $Apache::inputtags::part eq '0' &&
                    602: 		  $status ne 'UNCHECKEDOUT') {
                    603: 	    # if part is zero, no <part>s existed, so we need show the current
                    604: 	    # grading status
                    605: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                    606: 	    $result.= $gradestatus;
                    607: 	}
                    608: 	if (
                    609: 	    (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
                    610: 	    ($target eq 'answer') || ($target eq 'tex')
                    611: 	   ) {
1.227     albertel  612: 	    if ($target ne 'tex' &&
                    613: 		$ENV{'form.answer_output_mode'} ne 'tex') {
                    614: 		$result.="</form></body>\n";
1.159     albertel  615: 	    }
                    616: 	    if ($target eq 'web') {
                    617: 		$result.=&Apache::lonxml::xmlend();
                    618: 	    } elsif ($target eq 'tex') {
1.178     sakharuk  619: 		my $endminipage = '';
1.191     sakharuk  620: 		if (not $ENV{'form.problem_split'}=~/yes/) {
1.178     sakharuk  621: 		    $endminipage = '\end{minipage}';
                    622: 		}
1.174     sakharuk  623: 		$result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.159     albertel  624: 		if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.178     sakharuk  625: 		    $result .= $endminipage.'\end{document} ';
1.159     albertel  626: 		} else {
                    627: 		    $result .= '';
                    628: 		}
                    629: 	    }
                    630: 	}
                    631: 	if ($target eq 'grade') {
                    632: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                    633: 	    &finalize_storage();
                    634: 	}
1.172     albertel  635: 	if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173     albertel  636: 	    && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172     albertel  637: 	    $result.='</html>'; # normally we get it from xmlend, but in CSTR
                    638: 	                        # we always show answer mode too.
1.159     albertel  639: 	}
                    640:     } elsif ($target eq 'meta') {
                    641: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel  642: 	    @Apache::inputtags::response=();
1.159     albertel  643: 	    $result=&Apache::response::mandatory_part_meta;
                    644: 	}
1.215     albertel  645: 	$result.=&Apache::response::meta_part_order();
1.159     albertel  646:     } elsif ($target eq 'edit') {
                    647: 	&Apache::lonxml::debug("in end_problem with $target, edit");
                    648: 	$result = &problem_edit_footer();
                    649:     }
1.155     albertel  650: 
1.177     albertel  651:     if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
                    652: 	&Apache::inputtags::check_for_duplicate_ids();
                    653:     }
1.204     albertel  654: 
                    655:     &reset_problem_globals('problem');
1.159     albertel  656: 
                    657:     return $result;
1.48      albertel  658: }
                    659: 
1.108     albertel  660: 
1.48      albertel  661: sub start_library {
1.159     albertel  662:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    663:     my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244     albertel  664:     if ($$tagstack[0] eq 'library') {
                    665: 	&init_problem_globals('library');
                    666: 	$Apache::lonhomework::type='problem';
                    667:     }
1.159     albertel  668:     if ($target eq 'edit') {
                    669: 	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    670: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    671: 	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
                    672: 	    &problem_edit_header();
                    673: 	my $temp=&Apache::edit::insertlist($target,$token);
                    674: 	$result.=$temp;
                    675:     } elsif ($target eq 'modified') {
                    676: 	$result=$token->[4];
                    677: 	$result.=&Apache::edit::handle_insert();
                    678:     } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
                    679: 	     $ENV{'request.state'} eq "construct" ) {
                    680: 	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    681: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    682: 	my $name=&get_resource_name($parstack,$safeeval);
                    683: 	my $rndseed=&setup_rndseed($safeeval);
                    684: 	$result.="$head_tag_start<title>$name</title></head>
1.105     albertel  685:               $body_tag_start \n $form_tag_start".	
1.159     albertel  686: 		  '<input type="hidden" name="submitted" value="yes" />';
                    687: 	$result.=&problem_web_to_edit_header($rndseed);
                    688:     }
                    689:     return $result;
1.48      albertel  690: }
                    691: 
                    692: sub end_library {
1.159     albertel  693:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    694:     my $result='';
                    695:     if ($target eq 'edit') {
                    696: 	$result=&problem_edit_footer();
                    697:     } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
                    698: 	     $ENV{'request.state'} eq "construct") {
                    699: 	$result.='</form></body>'.&Apache::lonxml::xmlend();
                    700:     }
1.204     albertel  701:     if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159     albertel  702:     return $result;
1.197     www       703: }
                    704: 
                    705: sub start_definetag {
                    706:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    707: 
                    708:     my $result;
                    709: 
                    710:     my $name = $token->[2]->{'name'};
                    711:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
                    712:     if ($name=~/^\//) {
                    713: 	$result=
                    714:  '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
                    715:     } else {
                    716: 	$result=
                    717:  '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
                    718:     }
                    719:     $skip=~s/\</\&lt\;/gs;
                    720:     $skip=~s/\>/\&gt\;/gs;
                    721:     $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
                    722:     return $result;
                    723: }
                    724: 
                    725: sub end_definetag {
                    726:     return '';
1.1       albertel  727: }
                    728: 
                    729: sub start_block {
1.201     albertel  730:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel  731: 
                    732:     my $result;
1.1       albertel  733: 
1.160     albertel  734:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131     albertel  735: 	$target eq 'tex' || $target eq 'analyze') {
1.159     albertel  736: 	my $code = $token->[2]->{'condition'};
1.201     albertel  737: 	if (defined($code)) {
1.137     albertel  738: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    739: 		&Apache::lonxml::default_homework_load($safeeval);
                    740: 	    }
1.131     albertel  741: 	    $result = &Apache::run::run($code,$safeeval);
                    742: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                    743: 	} else {
                    744: 	    $result='1';
                    745: 	}
                    746: 	if ( ! $result ) {
1.201     albertel  747: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel  748: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    749: 	}
                    750: 	$result='';
                    751:     } elsif ($target eq 'edit') {
                    752: 	$result .=&Apache::edit::tag_start($target,$token);
                    753: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                    754: 					  $token,40);
                    755: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    756:     } elsif ($target eq 'modified') {
                    757: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    758: 						     $safeeval,'condition');
                    759: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel  760:     }
1.131     albertel  761:     return $result;
1.1       albertel  762: }
                    763: 
                    764: sub end_block {
1.167     www       765:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    766:     my $result;
                    767:     if ($target eq "edit") {
                    768: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    769:     }
                    770:     return $result;
                    771: }
                    772: 
                    773: sub start_languageblock {
1.201     albertel  774:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www       775: 
                    776:     my $result;
                    777: 
                    778:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    779: 	$target eq 'tex' || $target eq 'analyze') {
1.201     albertel  780: 	my $include = $token->[2]->{'include'};
                    781: 	my $exclude = $token->[2]->{'exclude'};
                    782:         my %languages=&Apache::loncommon::display_languages();
                    783:         $result='1';
                    784: 	if ($include) {
                    785:             $result='';
                    786:             foreach (split(/\,/,$include)) {
                    787:                 if ($languages{$_}) { $result='1'; }
                    788:             }
                    789: 	}
                    790:         if ($exclude) {
                    791:             foreach (split(/\,/,$exclude)) {
                    792:                 if ($languages{$_}) { $result='0'; }
                    793:             }
                    794: 	}
                    795: 	if ( ! $result ) {
                    796: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                    797: 						   $style);
                    798: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    799: 	}
                    800: 	$result='';
1.167     www       801:     } elsif ($target eq 'edit') {
                    802: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel  803: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www       804: 					  $token,40);
1.211     albertel  805: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www       806: 					  $token,40);
                    807: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    808:     } elsif ($target eq 'modified') {
                    809: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel  810: 						     $safeeval,'include',
                    811: 						     'exclude');
1.167     www       812: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    813:     }
                    814:     return $result;
                    815: }
                    816: 
                    817: sub end_languageblock {
1.170     www       818:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    819:     my $result;
1.201     albertel  820:     if ($target eq "edit") {
1.170     www       821: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    822:     }
                    823:     return $result;
                    824: }
                    825: 
                    826: sub start_instructorcomment {
1.201     albertel  827:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www       828: 
                    829:     my $result;
                    830: 
                    831:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    832: 	$target eq 'tex' || $target eq 'analyze') {
                    833:         $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
                    834: 	if ( ! $result ) {
1.201     albertel  835: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                    836: 						   $parser,$style);
1.170     www       837: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    838: 	}
                    839: 	$result='';
                    840:     } elsif ($target eq 'edit') {
                    841: 	$result .=&Apache::edit::tag_start($target,$token);
                    842: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    843:     }
                    844:     return $result;
                    845: }
                    846: 
                    847: sub end_instructorcomment {
1.159     albertel  848:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel  849:     my $result;
                    850:     if ($target eq "edit") {
                    851: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    852:     }
                    853:     return $result;
1.4       tsai      854: }
                    855: 
                    856: sub start_while {
1.159     albertel  857:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    858: 
1.160     albertel  859:     my $result;
1.161     albertel  860:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160     albertel  861: 	$target eq 'tex' || $target eq 'analyze') {
                    862: 	my $code = $token->[2]->{'condition'};
1.4       tsai      863: 
1.160     albertel  864: 	push( @Apache::structuretags::whileconds, $code);
                    865: 	if (!$Apache::lonxml::default_homework_loaded) {
                    866: 	    &Apache::lonxml::default_homework_load($safeeval);
                    867: 	}
                    868: 	my $result = &Apache::run::run($code,$safeeval);
1.161     albertel  869: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160     albertel  870: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel  871: 	push( @Apache::structuretags::whileline, $token->[5]);
                    872: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel  873: 	if ( $result ) {
                    874: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                    875: 	}
                    876:     } elsif ($target eq 'edit') {
                    877: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel  878: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel  879: 					  $token,40);
                    880: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    881:     } elsif ($target eq 'modified') {
                    882: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    883: 						     $safeeval,'condition');
                    884: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel  885:     }
1.160     albertel  886:     return $result;
1.4       tsai      887: }
                    888: 
                    889: sub end_while {
1.159     albertel  890:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel  891:     my $result;
                    892: 
                    893:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    894: 	$target eq 'tex' || $target eq 'analyze') {
                    895: 	my $code = pop(@Apache::structuretags::whileconds);
                    896: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel  897: 	my $line = pop(@Apache::structuretags::whileline);
                    898: 	my $return = &Apache::run::run($code,$safeeval);
                    899: 	my $starttime=time;
                    900: 	my $error=0;
                    901: 	while ($return) {
                    902: 	    if (time-$starttime >
                    903: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
                    904: 		$return = 0; $error=1; next;
                    905: 	    }
                    906: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
                    907: 	    $return = &Apache::run::run($code,$safeeval);
                    908: 	}
                    909: 	if ($error) {
1.211     albertel  910: 	    &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  911: 	}
                    912:     } elsif ($target eq "edit") {
                    913: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel  914:     }
1.160     albertel  915:     return $result;
1.1       albertel  916: }
1.6       tsai      917: 
1.160     albertel  918: # <randomlist show="1">
1.6       tsai      919: #  <tag1>..</tag1>
                    920: #  <tag2>..</tag2>
                    921: #  <tag3>..</tag3>
1.160     albertel  922: #  ...
1.6       tsai      923: # </randomlist>
                    924: sub start_randomlist {
1.159     albertel  925:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    926:     my $result;
                    927:     if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
                    928: 	$target eq 'tex' || $target eq 'analyze') {
                    929: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
                    930: 	my $b_parser= HTML::TokeParser->new(\$body);
                    931: 	my $b_tok;
                    932: 	my @randomlist;
                    933: 	my $list_item;
                    934: 	while($b_tok = $b_parser->get_token() ) {
                    935: 	    if($b_tok->[0] eq 'S') { # start tag
                    936: 		# get content of the tag until matching end tag
                    937: 		# get all text upto the matching tag
                    938: 		# and push the content into @randomlist
                    939: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                    940: 							   $b_parser);
                    941: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                    942: 		push(@randomlist,$list_item);
                    943: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                    944:                 #         $list_item</b>";
                    945: 	    }
                    946: 	    if($b_tok->[0] eq 'T') { # text
                    947: 		# what to do with text in between tags?
                    948: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                    949: 	    }
                    950: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                    951: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                    952: 	    # }
                    953: 	}
                    954: 	my @idx_arr = (0 .. $#randomlist);
                    955: 	&Apache::structuretags::shuffle(\@idx_arr);
                    956: 	my $bodytext = '';
                    957: 	my $show=$#randomlist;
                    958: 	my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                    959: 	$showarg--;
                    960: 	if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
                    961: 	for(0 .. $show) {
                    962: 	    $bodytext .= "$randomlist[ $idx_arr[$_] ]";
                    963: 	}
                    964: 	&Apache::lonxml::newparser($parser,\$bodytext);
                    965:     } elsif ($target eq 'edit' ) {
                    966: 	$result .=&Apache::edit::tag_start($target,$token);
                    967: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                    968: 					   $token,5);
                    969: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    970:     } elsif ($target eq 'modified' ) {
                    971: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    972: 						     $safeeval,'show');
                    973: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    974:     }
                    975:     return $result;
1.7       tsai      976: }
                    977: 
                    978: sub shuffle {
                    979:     my $a=shift;
                    980:     my $i;
1.70      albertel  981:     if (defined(@$a)) {
1.159     albertel  982: 	&Apache::response::setrandomnumber();
                    983: 	for($i=@$a;--$i;) {
                    984: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                    985: 	    next if $i == $j;
                    986: 	    @$a[$i,$j] = @$a[$j,$i];
                    987: 	}
1.7       tsai      988:     }
1.6       tsai      989: }
                    990: 
                    991: sub end_randomlist {
1.159     albertel  992:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    993:     my $result;
                    994:     if ($target eq 'edit' ) {
                    995: 	$result=&Apache::edit::tag_end($target,$token,
                    996: 				       'End Randomly Parsed Block');
                    997:     }
                    998:     return $result;
1.6       tsai      999: }
                   1000: 
1.11      albertel 1001: sub start_part {
1.159     albertel 1002:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1003:     my $result='';
                   1004:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
                   1005:     if ($id eq '') { $id = $Apache::lonxml::curdepth; }
                   1006:     $Apache::inputtags::part=$id;
1.177     albertel 1007:     push(@Apache::inputtags::partlist,$id);
                   1008:     @Apache::inputtags::response=();
1.159     albertel 1009:     @Apache::inputtags::previous=();
                   1010:     @Apache::inputtags::previous_version=();
1.241     albertel 1011:     $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159     albertel 1012:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.214     albertel 1013:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.209     albertel 1014:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1015: 
                   1016:     if ($target eq 'meta') {
1.224     www      1017: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   1018: 	return &Apache::response::mandatory_part_meta.
                   1019: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 1020:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   1021: 	     $target eq 'answer' || $target eq 'tex') {
                   1022: 	if ($hidden) {
                   1023: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
                   1024: 	} else {
                   1025: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   1026: 	    push (@Apache::inputtags::status,$status);
                   1027: 	    my $expression='$external::datestatus="'.$status.'";';
                   1028: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   1029: 	    &Apache::run::run($expression,$safeeval);
1.240     albertel 1030: 	    if ($ENV{'request.state'} eq 'construct') {
1.241     albertel 1031: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 1032: 	    }
1.216     albertel 1033: 	    if (( $status eq 'CLOSED' ) ||
                   1034: 		( $status eq 'UNCHECKEDOUT') ||
                   1035: 		( $status eq 'BANNED') ||
                   1036: 		( $status eq 'UNAVAILABLE') ||
                   1037: 		( $status eq 'INVALID_ACCESS')) {
1.159     albertel 1038: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
                   1039: 		if ( $target eq "web" ) {
1.211     albertel 1040: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 1041: 		} elsif ( $target eq 'tex' ) {
1.195     sakharuk 1042: 		    if (not $ENV{'form.problem_split'}=~/yes/) {
1.211     albertel 1043: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 1044: 		    } else {
1.211     albertel 1045: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 1046: 		    }
1.159     albertel 1047: 		}
                   1048: 	    } else {
                   1049: 		if ($target eq 'tex') {
1.195     sakharuk 1050: 		    if (not $ENV{'form.problem_split'}=~/yes/) {
                   1051: 			$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1052: 		    }
1.159     albertel 1053: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230     albertel 1054: 		    my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222     sakharuk 1055: 		    my @allkeys = split /,/,$allkeys;
                   1056: 		    my $allow_print_points = 0;
                   1057: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 1058: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 1059: 			    if ($1 ne '0') {$allow_print_points=1;}
                   1060: 			}
                   1061: 		    }
                   1062: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233     www      1063: 		} elsif ($target eq 'web') {
                   1064: 		    $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159     albertel 1065: 		}
                   1066: 	    }
                   1067: 	}
                   1068:     } elsif ($target eq 'edit') {
                   1069: 	$result.=&Apache::edit::tag_start($target,$token);
                   1070: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   1071: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      1072: 	    '&nbsp;&nbsp;'.
                   1073: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 1074: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1075:     } elsif ($target eq 'modified') {
                   1076: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 1077: 						     $safeeval,'id','display');
1.159     albertel 1078: 	if ($constructtag) {
1.225     albertel 1079: 	    #limiting ids to only letters numbers, and space
1.224     www      1080: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 1081: 	    $result = &Apache::edit::rebuild_tag($token);
                   1082: 	    $result.=&Apache::edit::handle_insert();
                   1083: 	}
                   1084:     }
                   1085:     return $result;
1.11      albertel 1086: }
                   1087: 
                   1088: sub end_part {
1.159     albertel 1089:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1090:     &Apache::lonxml::debug("in end_part $target ");
                   1091:     my $status=$Apache::inputtags::status['-1'];
                   1092:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
                   1093:     my $result='';
                   1094:     if ( $target eq 'meta' ) {
                   1095: 	$result='';
1.232     albertel 1096:     } elsif ($target eq 'grade' && 
                   1097: 	     ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
                   1098: 	     !$hidden) {
1.159     albertel 1099: 	$result=&Apache::inputtags::grade;
                   1100:     } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
                   1101: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   1102: 							$target);
1.212     albertel 1103: 	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
                   1104: 	    $gradestatus='';
                   1105: 	}
1.159     albertel 1106: 	$result=$gradestatus;
1.181     albertel 1107:     } elsif ($target eq 'edit') {
                   1108: 	$result=&Apache::edit::end_table();
1.159     albertel 1109:     }
                   1110:     pop @Apache::inputtags::status;
                   1111:     $Apache::inputtags::part='';
                   1112:     return $result;
1.11      albertel 1113: }
1.1       albertel 1114: 
1.25      albertel 1115: sub start_preduedate {
1.159     albertel 1116:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1117:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236     albertel 1118: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159     albertel 1119: 	if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 1120: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   1121: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159     albertel 1122: 	    &Apache::lonxml::get_all_text("/preduedate",$parser);
                   1123: 	}
1.24      albertel 1124:     }
1.159     albertel 1125:     return '';
1.24      albertel 1126: }
                   1127: 
1.25      albertel 1128: sub end_preduedate {
1.159     albertel 1129:     return '';
1.24      albertel 1130: }
                   1131: 
1.25      albertel 1132: sub start_postanswerdate {
1.159     albertel 1133:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234     albertel 1134:     if ($target eq 'web' || $target eq 'grade') {
1.159     albertel 1135: 	if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
                   1136: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser);
                   1137: 	}
                   1138:     } elsif ($target eq 'tex') {
1.234     albertel 1139: 	&Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159     albertel 1140:     }
                   1141:     return '';
1.24      albertel 1142: }
                   1143: 
1.25      albertel 1144: sub end_postanswerdate {
1.159     albertel 1145:     return '';
1.24      albertel 1146: }
                   1147: 
1.25      albertel 1148: sub start_notsolved {
1.159     albertel 1149:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1150:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1151: 	$target eq 'tex') {
                   1152: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   1153: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 1154: 	if ($gradestatus =~ /^correct/ &&
                   1155: 	    &Apache::response::show_answer()) {
1.159     albertel 1156: 	    &Apache::lonxml::debug("skipping");
                   1157: 	    &Apache::lonxml::get_all_text("/notsolved",$parser);
                   1158: 	}
1.24      albertel 1159:     }
1.159     albertel 1160:     return '';
1.24      albertel 1161: }
                   1162: 
1.25      albertel 1163: sub end_notsolved {
1.159     albertel 1164:     return '';
1.24      albertel 1165: }
                   1166: 
                   1167: sub start_solved {
1.159     albertel 1168:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1169:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1170: 	$target eq 'tex') {
                   1171: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 1172: 	if ($gradestatus !~ /^correct/ ||
                   1173: 	    !&Apache::response::show_answer()) {
1.159     albertel 1174: 	    &Apache::lonxml::get_all_text("/solved",$parser);
                   1175: 	}
1.24      albertel 1176:     }
1.159     albertel 1177:     return '';
1.24      albertel 1178: }
                   1179: 
                   1180: sub end_solved {
1.248   ! albertel 1181:     return '';
        !          1182: }
        !          1183: 
        !          1184: sub start_problemtype {
        !          1185:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
        !          1186:     my $result;
        !          1187:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
        !          1188: 	$target eq 'tex' || $target eq 'analyze') {
        !          1189: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
        !          1190: 	if (!defined($mode)) { $mode='show'; }
        !          1191: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
        !          1192: 	my $found=0;
        !          1193: 	foreach my $type (split(',',$for)) {
        !          1194: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
        !          1195: 	}
        !          1196: 	if ($mode eq 'show' && !$found) {
        !          1197: 	    &Apache::lonxml::get_all_text("/problemtype",$parser);
        !          1198: 	}
        !          1199: 	if ($mode eq 'hide' && $found) {
        !          1200: 	    &Apache::lonxml::get_all_text("/problemtype",$parser);
        !          1201: 	}
        !          1202:     } elsif ($target eq 'edit') {
        !          1203: 	$result .=&Apache::edit::tag_start($target,$token);
        !          1204: 	$result.=&Apache::edit::select_arg('Mode:','mode',
        !          1205: 					   [['show','Show'],
        !          1206: 					    ['hide','Hide']]
        !          1207: 					   ,$token);
        !          1208: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
        !          1209: 					     [ ['exam','Exam/Quiz Problem'],
        !          1210: 					       ['survey','Survey'],
        !          1211: 					       ['problem','Homework Problem'] ]
        !          1212: 					     ,$token);
        !          1213: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
        !          1214:     } elsif ($target eq 'modified') {
        !          1215: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        !          1216: 						     $safeeval,'mode','for');
        !          1217: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
        !          1218:     }
        !          1219:     return $result;
        !          1220: }
        !          1221: 
        !          1222: sub end_problemtype {
1.159     albertel 1223:     return '';
1.24      albertel 1224: }
1.34      albertel 1225: 
                   1226: sub start_startouttext {
1.159     albertel 1227:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1228:     my @result=(''.'');
                   1229:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
                   1230:     return (@result);
1.34      albertel 1231: }
1.159     albertel 1232: 
1.34      albertel 1233: sub end_startouttext {
1.159     albertel 1234:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1235:     my $result='';
                   1236:     my $text='';
                   1237: 
                   1238:     if ($target eq 'edit') {
                   1239: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211     albertel 1240: 	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
                   1241: <td>".&mt('Delete:').
1.159     albertel 1242:                  &Apache::edit::deletelist($target,$token)
                   1243: 		 ."</td>
1.42      albertel 1244: <td>".
1.159     albertel 1245:                  &Apache::edit::insertlist($target,$token).
                   1246: 		 &Apache::edit::end_row().
                   1247:                  &Apache::edit::start_spanning_row()."\n"
1.188     bowersj2 1248: 		 . &Apache::loncommon::helpLatexCheatsheet () .
1.159     albertel 1249: 		 &Apache::edit::editfield($token->[1],$text,"",80,4);
                   1250:     }
                   1251:     if ($target eq 'modified') {
1.219     albertel 1252: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 1253:     }
                   1254:     if ($target eq 'tex') {
                   1255: 	$result .= '\noindent ';
                   1256:     }
                   1257:     return $result;
1.34      albertel 1258: }
1.159     albertel 1259: 
1.34      albertel 1260: sub start_endouttext {
1.159     albertel 1261:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1262:     my $result='';
                   1263:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   1264:     if ($target eq "modified") {
                   1265: 	$result='<endouttext />'.
                   1266: 	    &Apache::edit::handle_insertafter('startouttext'); }
                   1267:     return $result;
1.34      albertel 1268: }
1.159     albertel 1269: 
1.34      albertel 1270: sub end_endouttext {
1.159     albertel 1271:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1272:     my @result=('','');
                   1273:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   1274:     return (@result);
1.34      albertel 1275: }
1.159     albertel 1276: 
1.45      albertel 1277: sub delete_startouttext {
1.159     albertel 1278:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1279:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
                   1280:     my $text=$$parser['-1']->get_text("/endouttext");
                   1281:     my $ntoken=$$parser['-1']->get_token();
                   1282:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   1283:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   1284:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   1285:     # they did the last time round
                   1286:     &Apache::lonxml::increasedepth($ntoken);
                   1287:     &Apache::lonxml::decreasedepth($ntoken);
                   1288:     return 1;
1.193     www      1289: }
                   1290: 
                   1291: sub start_simpleeditbutton {
                   1292:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1293:     my $result='';
                   1294:     if (($target eq 'web') &&
                   1295:         (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220     www      1296:         my $url=$ENV{'request.noversionuri'};
1.193     www      1297:         $url=~s/\?.*$//;
1.194     www      1298: 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211     albertel 1299:                 '<a href="'.$url.'/smpedit">'.&mt('Simple Problem Editor').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1.196     www      1300: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193     www      1301:     }
                   1302:     return $result;
                   1303: }
                   1304: 
                   1305: sub end_simpleeditbutton {
                   1306:     return '';
1.45      albertel 1307: }
1.34      albertel 1308: 
1.1       albertel 1309: 1;
                   1310: __END__

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