Annotation of loncom/homework/structuretags.pm, revision 1.254

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.254   ! www         4: # $Id: structuretags.pm,v 1.253 2004/05/28 19:26:05 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;
1.1       albertel   39: 
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).
        !            86: 	    &Apache::lonhtmlcommon::htmlareaheaders();
        !            87: 	@Apache::lonxml::htmlareafields=();
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 $rndseed");
1.250     albertel  181: 	    &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221     albertel  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('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel  333: </form>
                    334: ENDCHECKOUT
                    335: }
                    336: 
1.252     albertel  337: sub firstaccess_msg {
1.253     albertel  338:     my ($time,$symb)=@_;
                    339:     my ($map)=&Apache::lonnet::decode_symb($symb);
                    340:     my $foldertitle=&Apache::lonnet::gettitle($map);
                    341:     &Apache::lonxml::debug("map is $map title is $foldertitle");
1.252     albertel  342:     return (<<ENDCHECKOUT);
1.253     albertel  343: <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
1.252     albertel  344: <form name="markaccess" method="POST" action="$ENV{'request.uri'}">
                    345: <input type="hidden" name="markaccess" value="yes" />
                    346: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
                    347: </form>
                    348: ENDCHECKOUT
                    349: }
                    350: 
1.204     albertel  351: sub init_problem_globals {
                    352:     my ($type)=@_;
                    353:     #initialize globals
                    354:     if ($type eq 'problem') {
                    355: 	$Apache::inputtags::part='0';
                    356: 	@Apache::inputtags::partlist=('0');
1.241     albertel  357: 
                    358: 	$Apache::lonhomework::problemstatus=&get_problem_status('0')
1.204     albertel  359:     } else {
                    360: 	$Apache::inputtags::part='';
                    361: 	@Apache::inputtags::partlist=();
                    362: 	$Apache::lonhomework::problemstatus='';	
                    363:     }
                    364:     @Apache::inputtags::responselist = ();
                    365:     @Apache::inputtags::importlist = ();
                    366:     @Apache::inputtags::previous=();
                    367:     @Apache::inputtags::previous_version=();
                    368:     $Apache::structuretags::printanswer='No';
                    369:     @Apache::structuretags::whileconds=();
                    370:     @Apache::structuretags::whilebody=();
                    371:     @Apache::structuretags::whileline=();
                    372:     $Apache::lonhomework::scantronmode=0;
                    373:     undef($Apache::lonhomework::name);
                    374: 
                    375: }
                    376: 
                    377: sub reset_problem_globals {
                    378:     my ($type)=@_;
                    379:     undef(%Apache::lonhomework::history);
                    380:     undef(%Apache::lonhomework::results);
                    381:     undef($Apache::inputtags::part);
1.208     albertel  382: #don't undef this, lonhomework.pm takes care of this, we use this to 
                    383: #detect if we try to do 2 problems in one file
                    384: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel  385:     undef($Apache::lonhomework::name);
                    386: }
                    387: 
1.241     albertel  388: sub set_problem_state {
1.240     albertel  389:     my ($part)=@_;
                    390:     if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
                    391: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                    392: 	    'correct_by_student';
                    393:     }
                    394: }
                    395: 
1.241     albertel  396: sub get_problem_status {
                    397:     my ($part)=@_;
                    398:     my $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                    399:     &Apache::lonxml::debug("problem status for $part is $problem_status");
                    400:     &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
                    401:     if ($ENV{'request.state'} eq 'construct' &&
                    402: 	defined($ENV{'form.problemstatus'})) {
                    403: 	$problem_status=$ENV{'form.problemstatus'};
                    404:     }
                    405:     return $problem_status;
                    406: }
                    407: 
1.9       albertel  408: sub start_problem {
1.159     albertel  409:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19      albertel  410: 
1.184     albertel  411:     if ( $Apache::inputtags::part ne '' ||
                    412: 	 $Apache::lonhomework::parsing_a_problem) {
                    413: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
                    414: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159     albertel  415: 	return '';
                    416:     }
1.184     albertel  417: 
                    418:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel  419:     &init_problem_globals('problem');
1.166     albertel  420: 
                    421:     if (defined($ENV{'scantron.maxquest'})) {
                    422: 	$Apache::lonhomework::scantronmode=1;
                    423:     }
1.161     albertel  424: 
1.246     albertel  425:     &initialize_storage();
1.159     albertel  426:     if ($target ne 'analyze') {
                    427: 	if ($target eq 'web') {
                    428: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238     albertel  429: 	}
1.241     albertel  430:        	if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159     albertel  431: 	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.237     albertel  432: 	if (($ENV{'request.state'} eq 'construct') &&
                    433: 	    defined($ENV{'form.problemtype'})) {
                    434: 	    $Apache::lonhomework::type=$ENV{'form.problemtype'};
                    435: 	}
1.240     albertel  436: 	&Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159     albertel  437:     }
1.164     albertel  438:     if ($Apache::lonhomework::type eq '' ) {
1.159     albertel  439: 	my $uri=$ENV{'request.uri'};
                    440: 	if ($uri=~/\.(\w+)$/) {
                    441: 	    $Apache::lonhomework::type=$1;
                    442: 	    &Apache::lonxml::debug("Using type of $1");
                    443: 	} else {
                    444: 	    $Apache::lonhomework::type='problem';
                    445: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                    446: 	}
1.87      albertel  447:     }
1.58      www       448: 
1.159     albertel  449:     #added vars to the scripting enviroment
1.213     albertel  450:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248     albertel  451:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel  452:     &Apache::run::run($expression,$safeeval);
1.159     albertel  453:     my $status;
                    454:     my $accessmsg;
                    455: 
                    456:     #should get back a <html> or the neccesary stuff to start XML/MathML
                    457:     my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    458: 	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    459:     if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
                    460: 
                    461:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
                    462:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    463: 	$target eq 'tex') {
                    464: 	#handle exam checkout
                    465: 	if ($Apache::lonhomework::type eq 'exam') {
                    466: 	    my $token=
                    467: 		$Apache::lonhomework::history{"resource.0.outtoken"};
                    468: 	    if (($ENV{'form.doescheckout'}) && (!$token)) {
                    469: 		$token=&Apache::lonxml::maketoken();
                    470: 		$Apache::lonhomework::history{"resource.0.outtoken"}=
                    471: 		    $token;
                    472: 	    }
                    473: 	    $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142     albertel  474: 	}
1.252     albertel  475: 	if ($ENV{'form.markaccess'}) {
                    476: 	    &Apache::lonnet::set_first_access('map');
                    477: 	}
1.159     albertel  478: 	#handle rand seed in construction space
                    479: 	my $rndseed=&setup_rndseed($safeeval);
1.162     albertel  480: 	my ($symb)=&Apache::lonxml::whichuser();
1.163     albertel  481: 	if ($ENV{'request.state'} ne "construct" && $symb eq '') {
1.162     albertel  482: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
                    483: 		$rndseed.'" />'.
                    484: 		    '<input type="submit" name="resetdata"
1.211     albertel  485:                              value="'.&mt('New Problem Variation').'" />'.
1.164     albertel  486: 		    '<input type="hidden" name="username"
1.185     albertel  487:                              value="'.$ENV{'form.username'}.'" /> <br />';
1.162     albertel  488: 	}
1.159     albertel  489: 	($status,$accessmsg) = &Apache::lonhomework::check_access('0');
                    490: 	push (@Apache::inputtags::status,$status);
                    491: 	my $expression='$external::datestatus="'.$status.'";';
                    492: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                    493: 	&Apache::run::run($expression,$safeeval);
                    494: 	&Apache::lonxml::debug("Got $status");
                    495: 	if (( $status eq 'CLOSED' ) ||
                    496: 	    ( $status eq 'UNCHECKEDOUT') ||
1.252     albertel  497: 	    ( $status eq 'NOT_YET_VIEWED') ||
1.159     albertel  498: 	    ( $status eq 'BANNED') ||
1.216     albertel  499: 	    ( $status eq 'UNAVAILABLE') ||
                    500: 	    ( $status eq 'INVALID_ACCESS')) {
1.159     albertel  501: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
                    502: 	    if ( $target eq "web" ) {
                    503: 		$result.= $head_tag_start.'</head>';
                    504: 		my $msg=$body_tag_start;
                    505: 		if ($status eq 'UNAVAILABLE') {
1.245     albertel  506: 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253     albertel  507: 		} elsif ($status ne 'NOT_YET_VIEWED') {
1.245     albertel  508: 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159     albertel  509: 		}
1.216     albertel  510: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159     albertel  511: 		    $msg.='The problem '.$accessmsg;
                    512: 		} elsif ($status eq 'UNCHECKEDOUT') {
                    513: 		    $msg.=&checkout_msg;
1.252     albertel  514: 		} elsif ($status eq 'NOT_YET_VIEWED') {
1.253     albertel  515: 		    $msg.=&firstaccess_msg($accessmsg,$symb);
1.159     albertel  516: 		}
                    517: 		$result.=$msg.'<br />';
                    518: 	    } elsif ($target eq 'tex') {
                    519: 		$result.='\begin{document}\noindent \vskip 1 mm  \begin{minipage}{\textwidth}\vskip 0 mm';
                    520: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel  521: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel  522: 		} else {
1.211     albertel  523: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel  524: 		}
                    525: 	    }
                    526: 	} elsif ($target eq 'web') {
                    527: 	    my $name= &get_resource_name($parstack,$safeeval);
1.227     albertel  528: 	    $result.="$head_tag_start<title>$name</title></head>
1.158     sakharuk  529:               $body_tag_start \n $form_tag_start".	
1.227     albertel  530: 	      '<input type="hidden" name="submitted" value="yes" />';
                    531: 	    # create a page header and exit
                    532: 	    if ($ENV{'request.state'} eq "construct") {
                    533: 		$result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
                    534: 	    }
                    535: 	    # if we are viewing someone else preserve that info
                    536: 	    if (defined $ENV{'form.grade_symb'}) {
                    537: 		foreach my $field ('symb','courseid','domain','username') {
                    538: 		    $result .= '<input type="hidden" name="grade_'.$field.
                    539: 			'" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
1.159     albertel  540: 		}
                    541: 	    }
                    542: 	} elsif ($target eq 'tex') {
1.192     sakharuk  543: 	    my $startminipage = '';
1.191     sakharuk  544: 	    if (not $ENV{'form.problem_split'}=~/yes/) {
1.192     sakharuk  545: 		$startminipage = '\begin{minipage}{\textwidth}';
1.178     sakharuk  546: 	    }
1.159     albertel  547: 	    my $id = $Apache::inputtags::part;
                    548: 	    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.223     sakharuk  549: 	    my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
                    550: 	    my @packages = split /,/,$packages;
                    551: 	    my $allow_print_points = 0;
                    552: 	    foreach my $partial_key (@packages) {
1.230     albertel  553: 		if ($partial_key=~m/^part_0$/) {
1.223     sakharuk  554: 		    $allow_print_points=1;
1.159     albertel  555: 		}
                    556: 	    }
                    557: 	    my $duedate = &Apache::lonnet::EXT("resource.$id.duedate"); 
                    558: 	    $duedate = POSIX::strftime("%c",localtime($duedate));
                    559: 	    my $temp_file;
                    560: 	    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
                    561: 	    if (-e $filename) {
                    562: 		$temp_file = Apache::File->new($filename);
                    563: 	    } else {
                    564: 		$temp_file = Apache::File->new('>>'.$filename);
                    565: 	    }
                    566: 	    my @due_file_content = <$temp_file>;
                    567: 	    my $due_file_content = $due_file_content[$#due_file_content];
                    568: 	    chomp $due_file_content;
1.231     sakharuk  569: 	    my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval));
1.159     albertel  570: 	    if ($due_file_content ne $duedate) {
                    571: 		$temp_file = Apache::File->new('>'.$filename);
                    572: 		print $temp_file "$duedate\n";
                    573: 		if (not $ENV{'request.symb'} =~ m/\.page_/) {
                    574: 		    if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.206     sakharuk  575: 			$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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  576: 		    } else {
1.206     sakharuk  577: 			$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159     albertel  578: 			if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
                    579: 		    }
1.104     sakharuk  580: 		} else {
1.159     albertel  581: 		    $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104     sakharuk  582: 		}
1.101     sakharuk  583: 	    } else {
1.159     albertel  584: 		if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.206     sakharuk  585: 		    $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';	
1.159     albertel  586: 		    if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
                    587: 		} else {
                    588: 		    $result .= '\vskip 1mm \\\\\\\\';
                    589: 		}
                    590: 	    }
1.99      sakharuk  591: 	}
1.159     albertel  592:     } elsif ($target eq 'edit') {
                    593: 	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
                    594: 	    &problem_edit_header();
1.226     albertel  595: 	$Apache::lonxml::warnings_error_header=
                    596: 	    &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  597: 	my $temp=&Apache::edit::insertlist($target,$token);
                    598: 	$result.=$temp;
                    599:     } elsif ($target eq 'modified') {
                    600: 	$result=$token->[4];
                    601: 	$result.=&Apache::edit::handle_insert();
                    602:     } else {
                    603: 	# page_start returned a starting result, delete it if we don't need it
                    604: 	$result = '';
1.99      sakharuk  605:     }
1.159     albertel  606:     return $result;
1.9       albertel  607: }
                    608: 
                    609: sub end_problem {
1.159     albertel  610:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    611:     my $result='';
                    612:     my $status=$Apache::inputtags::status['-1'];
                    613:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    614: 	$target eq 'tex') {
1.249     albertel  615: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159     albertel  616: 	    # if part is zero, no <part>s existed, so we need to the grading
1.249     albertel  617: 	    if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
                    618: 		&Apache::inputtags::grade;
                    619: 	    } else {
                    620: 		# move any submission data to .hidden
                    621: 		&Apache::inputtags::hidealldata($Apache::inputtags::part);
                    622: 	    }
1.159     albertel  623: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                    624: 		  $Apache::inputtags::part eq '0' &&
1.252     albertel  625: 		  $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159     albertel  626: 	    # if part is zero, no <part>s existed, so we need show the current
                    627: 	    # grading status
                    628: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                    629: 	    $result.= $gradestatus;
                    630: 	}
                    631: 	if (
                    632: 	    (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
                    633: 	    ($target eq 'answer') || ($target eq 'tex')
                    634: 	   ) {
1.227     albertel  635: 	    if ($target ne 'tex' &&
                    636: 		$ENV{'form.answer_output_mode'} ne 'tex') {
1.254   ! www       637: 		$result.="</form>";
        !           638: 		$result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);
        !           639: 		$result.="</body>\n";
1.159     albertel  640: 	    }
                    641: 	    if ($target eq 'web') {
                    642: 		$result.=&Apache::lonxml::xmlend();
                    643: 	    } elsif ($target eq 'tex') {
1.178     sakharuk  644: 		my $endminipage = '';
1.191     sakharuk  645: 		if (not $ENV{'form.problem_split'}=~/yes/) {
1.178     sakharuk  646: 		    $endminipage = '\end{minipage}';
                    647: 		}
1.174     sakharuk  648: 		$result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.159     albertel  649: 		if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.178     sakharuk  650: 		    $result .= $endminipage.'\end{document} ';
1.159     albertel  651: 		} else {
                    652: 		    $result .= '';
                    653: 		}
                    654: 	    }
                    655: 	}
                    656: 	if ($target eq 'grade') {
                    657: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                    658: 	    &finalize_storage();
                    659: 	}
1.172     albertel  660: 	if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173     albertel  661: 	    && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172     albertel  662: 	    $result.='</html>'; # normally we get it from xmlend, but in CSTR
                    663: 	                        # we always show answer mode too.
1.159     albertel  664: 	}
                    665:     } elsif ($target eq 'meta') {
                    666: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel  667: 	    @Apache::inputtags::response=();
1.159     albertel  668: 	    $result=&Apache::response::mandatory_part_meta;
                    669: 	}
1.215     albertel  670: 	$result.=&Apache::response::meta_part_order();
1.159     albertel  671:     } elsif ($target eq 'edit') {
                    672: 	&Apache::lonxml::debug("in end_problem with $target, edit");
                    673: 	$result = &problem_edit_footer();
                    674:     }
1.155     albertel  675: 
1.177     albertel  676:     if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
                    677: 	&Apache::inputtags::check_for_duplicate_ids();
                    678:     }
1.204     albertel  679: 
                    680:     &reset_problem_globals('problem');
1.159     albertel  681: 
                    682:     return $result;
1.48      albertel  683: }
                    684: 
1.108     albertel  685: 
1.48      albertel  686: sub start_library {
1.159     albertel  687:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    688:     my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244     albertel  689:     if ($$tagstack[0] eq 'library') {
                    690: 	&init_problem_globals('library');
                    691: 	$Apache::lonhomework::type='problem';
                    692:     }
1.159     albertel  693:     if ($target eq 'edit') {
                    694: 	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    695: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    696: 	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
                    697: 	    &problem_edit_header();
                    698: 	my $temp=&Apache::edit::insertlist($target,$token);
                    699: 	$result.=$temp;
                    700:     } elsif ($target eq 'modified') {
                    701: 	$result=$token->[4];
                    702: 	$result.=&Apache::edit::handle_insert();
                    703:     } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
                    704: 	     $ENV{'request.state'} eq "construct" ) {
                    705: 	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
                    706: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
                    707: 	my $name=&get_resource_name($parstack,$safeeval);
                    708: 	my $rndseed=&setup_rndseed($safeeval);
                    709: 	$result.="$head_tag_start<title>$name</title></head>
1.105     albertel  710:               $body_tag_start \n $form_tag_start".	
1.159     albertel  711: 		  '<input type="hidden" name="submitted" value="yes" />';
                    712: 	$result.=&problem_web_to_edit_header($rndseed);
                    713:     }
                    714:     return $result;
1.48      albertel  715: }
                    716: 
                    717: sub end_library {
1.159     albertel  718:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    719:     my $result='';
                    720:     if ($target eq 'edit') {
                    721: 	$result=&problem_edit_footer();
                    722:     } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
                    723: 	     $ENV{'request.state'} eq "construct") {
                    724: 	$result.='</form></body>'.&Apache::lonxml::xmlend();
                    725:     }
1.204     albertel  726:     if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159     albertel  727:     return $result;
1.197     www       728: }
                    729: 
                    730: sub start_definetag {
                    731:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    732: 
                    733:     my $result;
                    734: 
                    735:     my $name = $token->[2]->{'name'};
                    736:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
                    737:     if ($name=~/^\//) {
                    738: 	$result=
                    739:  '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
                    740:     } else {
                    741: 	$result=
                    742:  '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
                    743:     }
                    744:     $skip=~s/\</\&lt\;/gs;
                    745:     $skip=~s/\>/\&gt\;/gs;
                    746:     $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
                    747:     return $result;
                    748: }
                    749: 
                    750: sub end_definetag {
                    751:     return '';
1.1       albertel  752: }
                    753: 
                    754: sub start_block {
1.201     albertel  755:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel  756: 
                    757:     my $result;
1.1       albertel  758: 
1.160     albertel  759:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131     albertel  760: 	$target eq 'tex' || $target eq 'analyze') {
1.159     albertel  761: 	my $code = $token->[2]->{'condition'};
1.201     albertel  762: 	if (defined($code)) {
1.137     albertel  763: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    764: 		&Apache::lonxml::default_homework_load($safeeval);
                    765: 	    }
1.131     albertel  766: 	    $result = &Apache::run::run($code,$safeeval);
                    767: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                    768: 	} else {
                    769: 	    $result='1';
                    770: 	}
                    771: 	if ( ! $result ) {
1.201     albertel  772: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel  773: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    774: 	}
                    775: 	$result='';
                    776:     } elsif ($target eq 'edit') {
                    777: 	$result .=&Apache::edit::tag_start($target,$token);
                    778: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                    779: 					  $token,40);
                    780: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    781:     } elsif ($target eq 'modified') {
                    782: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    783: 						     $safeeval,'condition');
                    784: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel  785:     }
1.131     albertel  786:     return $result;
1.1       albertel  787: }
                    788: 
                    789: sub end_block {
1.167     www       790:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    791:     my $result;
                    792:     if ($target eq "edit") {
                    793: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    794:     }
                    795:     return $result;
                    796: }
                    797: 
                    798: sub start_languageblock {
1.201     albertel  799:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www       800: 
                    801:     my $result;
                    802: 
                    803:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    804: 	$target eq 'tex' || $target eq 'analyze') {
1.201     albertel  805: 	my $include = $token->[2]->{'include'};
                    806: 	my $exclude = $token->[2]->{'exclude'};
                    807:         my %languages=&Apache::loncommon::display_languages();
                    808:         $result='1';
                    809: 	if ($include) {
                    810:             $result='';
                    811:             foreach (split(/\,/,$include)) {
                    812:                 if ($languages{$_}) { $result='1'; }
                    813:             }
                    814: 	}
                    815:         if ($exclude) {
                    816:             foreach (split(/\,/,$exclude)) {
                    817:                 if ($languages{$_}) { $result='0'; }
                    818:             }
                    819: 	}
                    820: 	if ( ! $result ) {
                    821: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                    822: 						   $style);
                    823: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    824: 	}
                    825: 	$result='';
1.167     www       826:     } elsif ($target eq 'edit') {
                    827: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel  828: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www       829: 					  $token,40);
1.211     albertel  830: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www       831: 					  $token,40);
                    832: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    833:     } elsif ($target eq 'modified') {
                    834: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel  835: 						     $safeeval,'include',
                    836: 						     'exclude');
1.167     www       837: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    838:     }
                    839:     return $result;
                    840: }
                    841: 
                    842: sub end_languageblock {
1.170     www       843:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    844:     my $result;
1.201     albertel  845:     if ($target eq "edit") {
1.170     www       846: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    847:     }
                    848:     return $result;
                    849: }
                    850: 
                    851: sub start_instructorcomment {
1.201     albertel  852:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www       853: 
                    854:     my $result;
                    855: 
                    856:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    857: 	$target eq 'tex' || $target eq 'analyze') {
                    858:         $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
                    859: 	if ( ! $result ) {
1.201     albertel  860: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                    861: 						   $parser,$style);
1.170     www       862: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                    863: 	}
                    864: 	$result='';
                    865:     } elsif ($target eq 'edit') {
                    866: 	$result .=&Apache::edit::tag_start($target,$token);
                    867: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    868:     }
                    869:     return $result;
                    870: }
                    871: 
                    872: sub end_instructorcomment {
1.159     albertel  873:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel  874:     my $result;
                    875:     if ($target eq "edit") {
                    876: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    877:     }
                    878:     return $result;
1.4       tsai      879: }
                    880: 
                    881: sub start_while {
1.159     albertel  882:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    883: 
1.160     albertel  884:     my $result;
1.161     albertel  885:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160     albertel  886: 	$target eq 'tex' || $target eq 'analyze') {
                    887: 	my $code = $token->[2]->{'condition'};
1.4       tsai      888: 
1.160     albertel  889: 	push( @Apache::structuretags::whileconds, $code);
                    890: 	if (!$Apache::lonxml::default_homework_loaded) {
                    891: 	    &Apache::lonxml::default_homework_load($safeeval);
                    892: 	}
                    893: 	my $result = &Apache::run::run($code,$safeeval);
1.161     albertel  894: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160     albertel  895: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel  896: 	push( @Apache::structuretags::whileline, $token->[5]);
                    897: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel  898: 	if ( $result ) {
                    899: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                    900: 	}
                    901:     } elsif ($target eq 'edit') {
                    902: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel  903: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel  904: 					  $token,40);
                    905: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    906:     } elsif ($target eq 'modified') {
                    907: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    908: 						     $safeeval,'condition');
                    909: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel  910:     }
1.160     albertel  911:     return $result;
1.4       tsai      912: }
                    913: 
                    914: sub end_while {
1.159     albertel  915:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel  916:     my $result;
                    917: 
                    918:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    919: 	$target eq 'tex' || $target eq 'analyze') {
                    920: 	my $code = pop(@Apache::structuretags::whileconds);
                    921: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel  922: 	my $line = pop(@Apache::structuretags::whileline);
                    923: 	my $return = &Apache::run::run($code,$safeeval);
                    924: 	my $starttime=time;
                    925: 	my $error=0;
                    926: 	while ($return) {
                    927: 	    if (time-$starttime >
                    928: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
                    929: 		$return = 0; $error=1; next;
                    930: 	    }
                    931: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
                    932: 	    $return = &Apache::run::run($code,$safeeval);
                    933: 	}
                    934: 	if ($error) {
1.211     albertel  935: 	    &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  936: 	}
                    937:     } elsif ($target eq "edit") {
                    938: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel  939:     }
1.160     albertel  940:     return $result;
1.1       albertel  941: }
1.6       tsai      942: 
1.160     albertel  943: # <randomlist show="1">
1.6       tsai      944: #  <tag1>..</tag1>
                    945: #  <tag2>..</tag2>
                    946: #  <tag3>..</tag3>
1.160     albertel  947: #  ...
1.6       tsai      948: # </randomlist>
                    949: sub start_randomlist {
1.159     albertel  950:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    951:     my $result;
                    952:     if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
                    953: 	$target eq 'tex' || $target eq 'analyze') {
                    954: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
                    955: 	my $b_parser= HTML::TokeParser->new(\$body);
                    956: 	my $b_tok;
                    957: 	my @randomlist;
                    958: 	my $list_item;
                    959: 	while($b_tok = $b_parser->get_token() ) {
                    960: 	    if($b_tok->[0] eq 'S') { # start tag
                    961: 		# get content of the tag until matching end tag
                    962: 		# get all text upto the matching tag
                    963: 		# and push the content into @randomlist
                    964: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                    965: 							   $b_parser);
                    966: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                    967: 		push(@randomlist,$list_item);
                    968: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                    969:                 #         $list_item</b>";
                    970: 	    }
                    971: 	    if($b_tok->[0] eq 'T') { # text
                    972: 		# what to do with text in between tags?
                    973: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                    974: 	    }
                    975: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                    976: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                    977: 	    # }
                    978: 	}
                    979: 	my @idx_arr = (0 .. $#randomlist);
                    980: 	&Apache::structuretags::shuffle(\@idx_arr);
                    981: 	my $bodytext = '';
                    982: 	my $show=$#randomlist;
                    983: 	my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                    984: 	$showarg--;
                    985: 	if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
                    986: 	for(0 .. $show) {
                    987: 	    $bodytext .= "$randomlist[ $idx_arr[$_] ]";
                    988: 	}
                    989: 	&Apache::lonxml::newparser($parser,\$bodytext);
                    990:     } elsif ($target eq 'edit' ) {
                    991: 	$result .=&Apache::edit::tag_start($target,$token);
                    992: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                    993: 					   $token,5);
                    994: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    995:     } elsif ($target eq 'modified' ) {
                    996: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    997: 						     $safeeval,'show');
                    998: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    999:     }
                   1000:     return $result;
1.7       tsai     1001: }
                   1002: 
                   1003: sub shuffle {
                   1004:     my $a=shift;
                   1005:     my $i;
1.70      albertel 1006:     if (defined(@$a)) {
1.251     albertel 1007: 	&Apache::response::pushrandomnumber();
1.159     albertel 1008: 	for($i=@$a;--$i;) {
                   1009: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                   1010: 	    next if $i == $j;
                   1011: 	    @$a[$i,$j] = @$a[$j,$i];
                   1012: 	}
1.251     albertel 1013: 	&Apache::response::poprandomnumber();
1.7       tsai     1014:     }
1.6       tsai     1015: }
                   1016: 
                   1017: sub end_randomlist {
1.159     albertel 1018:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1019:     my $result;
                   1020:     if ($target eq 'edit' ) {
                   1021: 	$result=&Apache::edit::tag_end($target,$token,
                   1022: 				       'End Randomly Parsed Block');
                   1023:     }
                   1024:     return $result;
1.6       tsai     1025: }
                   1026: 
1.11      albertel 1027: sub start_part {
1.159     albertel 1028:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1029:     my $result='';
                   1030:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
                   1031:     if ($id eq '') { $id = $Apache::lonxml::curdepth; }
                   1032:     $Apache::inputtags::part=$id;
1.177     albertel 1033:     push(@Apache::inputtags::partlist,$id);
                   1034:     @Apache::inputtags::response=();
1.159     albertel 1035:     @Apache::inputtags::previous=();
                   1036:     @Apache::inputtags::previous_version=();
1.241     albertel 1037:     $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159     albertel 1038:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.214     albertel 1039:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.209     albertel 1040:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1041: 
                   1042:     if ($target eq 'meta') {
1.224     www      1043: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   1044: 	return &Apache::response::mandatory_part_meta.
                   1045: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 1046:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   1047: 	     $target eq 'answer' || $target eq 'tex') {
                   1048: 	if ($hidden) {
                   1049: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
                   1050: 	} else {
                   1051: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   1052: 	    push (@Apache::inputtags::status,$status);
                   1053: 	    my $expression='$external::datestatus="'.$status.'";';
                   1054: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   1055: 	    &Apache::run::run($expression,$safeeval);
1.240     albertel 1056: 	    if ($ENV{'request.state'} eq 'construct') {
1.241     albertel 1057: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 1058: 	    }
1.216     albertel 1059: 	    if (( $status eq 'CLOSED' ) ||
                   1060: 		( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 1061: 		( $status eq 'NOT_YET_VIEWED') ||
1.216     albertel 1062: 		( $status eq 'BANNED') ||
                   1063: 		( $status eq 'UNAVAILABLE') ||
                   1064: 		( $status eq 'INVALID_ACCESS')) {
1.159     albertel 1065: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
                   1066: 		if ( $target eq "web" ) {
1.211     albertel 1067: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 1068: 		} elsif ( $target eq 'tex' ) {
1.195     sakharuk 1069: 		    if (not $ENV{'form.problem_split'}=~/yes/) {
1.211     albertel 1070: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 1071: 		    } else {
1.211     albertel 1072: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 1073: 		    }
1.159     albertel 1074: 		}
                   1075: 	    } else {
                   1076: 		if ($target eq 'tex') {
1.195     sakharuk 1077: 		    if (not $ENV{'form.problem_split'}=~/yes/) {
                   1078: 			$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1079: 		    }
1.159     albertel 1080: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230     albertel 1081: 		    my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222     sakharuk 1082: 		    my @allkeys = split /,/,$allkeys;
                   1083: 		    my $allow_print_points = 0;
                   1084: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 1085: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 1086: 			    if ($1 ne '0') {$allow_print_points=1;}
                   1087: 			}
                   1088: 		    }
                   1089: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233     www      1090: 		} elsif ($target eq 'web') {
                   1091: 		    $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159     albertel 1092: 		}
                   1093: 	    }
                   1094: 	}
                   1095:     } elsif ($target eq 'edit') {
                   1096: 	$result.=&Apache::edit::tag_start($target,$token);
                   1097: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   1098: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      1099: 	    '&nbsp;&nbsp;'.
                   1100: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 1101: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1102:     } elsif ($target eq 'modified') {
                   1103: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 1104: 						     $safeeval,'id','display');
1.159     albertel 1105: 	if ($constructtag) {
1.225     albertel 1106: 	    #limiting ids to only letters numbers, and space
1.224     www      1107: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 1108: 	    $result = &Apache::edit::rebuild_tag($token);
                   1109: 	    $result.=&Apache::edit::handle_insert();
                   1110: 	}
                   1111:     }
                   1112:     return $result;
1.11      albertel 1113: }
                   1114: 
                   1115: sub end_part {
1.159     albertel 1116:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1117:     &Apache::lonxml::debug("in end_part $target ");
                   1118:     my $status=$Apache::inputtags::status['-1'];
                   1119:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
                   1120:     my $result='';
                   1121:     if ( $target eq 'meta' ) {
                   1122: 	$result='';
1.249     albertel 1123:     } elsif ($target eq 'grade') {
                   1124: 	if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
                   1125: 	    !$hidden) {
                   1126: 	    $result=&Apache::inputtags::grade;
                   1127: 	} else {
                   1128: 	    # move any submission data to .hidden
                   1129: 	    &Apache::inputtags::hidealldata($Apache::inputtags::part);
                   1130: 	}
1.159     albertel 1131:     } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
                   1132: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   1133: 							$target);
1.212     albertel 1134: 	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
                   1135: 	    $gradestatus='';
                   1136: 	}
1.159     albertel 1137: 	$result=$gradestatus;
1.181     albertel 1138:     } elsif ($target eq 'edit') {
                   1139: 	$result=&Apache::edit::end_table();
1.159     albertel 1140:     }
                   1141:     pop @Apache::inputtags::status;
                   1142:     $Apache::inputtags::part='';
                   1143:     return $result;
1.11      albertel 1144: }
1.1       albertel 1145: 
1.25      albertel 1146: sub start_preduedate {
1.159     albertel 1147:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1148:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236     albertel 1149: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159     albertel 1150: 	if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 1151: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   1152: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159     albertel 1153: 	    &Apache::lonxml::get_all_text("/preduedate",$parser);
                   1154: 	}
1.24      albertel 1155:     }
1.159     albertel 1156:     return '';
1.24      albertel 1157: }
                   1158: 
1.25      albertel 1159: sub end_preduedate {
1.159     albertel 1160:     return '';
1.24      albertel 1161: }
                   1162: 
1.25      albertel 1163: sub start_postanswerdate {
1.159     albertel 1164:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234     albertel 1165:     if ($target eq 'web' || $target eq 'grade') {
1.159     albertel 1166: 	if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
                   1167: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser);
                   1168: 	}
                   1169:     } elsif ($target eq 'tex') {
1.234     albertel 1170: 	&Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159     albertel 1171:     }
                   1172:     return '';
1.24      albertel 1173: }
                   1174: 
1.25      albertel 1175: sub end_postanswerdate {
1.159     albertel 1176:     return '';
1.24      albertel 1177: }
                   1178: 
1.25      albertel 1179: sub start_notsolved {
1.159     albertel 1180:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1181:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1182: 	$target eq 'tex') {
                   1183: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   1184: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 1185: 	if ($gradestatus =~ /^correct/ &&
                   1186: 	    &Apache::response::show_answer()) {
1.159     albertel 1187: 	    &Apache::lonxml::debug("skipping");
                   1188: 	    &Apache::lonxml::get_all_text("/notsolved",$parser);
                   1189: 	}
1.24      albertel 1190:     }
1.159     albertel 1191:     return '';
1.24      albertel 1192: }
                   1193: 
1.25      albertel 1194: sub end_notsolved {
1.159     albertel 1195:     return '';
1.24      albertel 1196: }
                   1197: 
                   1198: sub start_solved {
1.159     albertel 1199:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1200:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1201: 	$target eq 'tex') {
                   1202: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 1203: 	if ($gradestatus !~ /^correct/ ||
                   1204: 	    !&Apache::response::show_answer()) {
1.159     albertel 1205: 	    &Apache::lonxml::get_all_text("/solved",$parser);
                   1206: 	}
1.24      albertel 1207:     }
1.159     albertel 1208:     return '';
1.24      albertel 1209: }
                   1210: 
                   1211: sub end_solved {
1.248     albertel 1212:     return '';
                   1213: }
                   1214: 
                   1215: sub start_problemtype {
                   1216:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1217:     my $result;
                   1218:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1219: 	$target eq 'tex' || $target eq 'analyze') {
                   1220: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
                   1221: 	if (!defined($mode)) { $mode='show'; }
                   1222: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
                   1223: 	my $found=0;
                   1224: 	foreach my $type (split(',',$for)) {
                   1225: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
                   1226: 	}
                   1227: 	if ($mode eq 'show' && !$found) {
                   1228: 	    &Apache::lonxml::get_all_text("/problemtype",$parser);
                   1229: 	}
                   1230: 	if ($mode eq 'hide' && $found) {
                   1231: 	    &Apache::lonxml::get_all_text("/problemtype",$parser);
                   1232: 	}
                   1233:     } elsif ($target eq 'edit') {
                   1234: 	$result .=&Apache::edit::tag_start($target,$token);
                   1235: 	$result.=&Apache::edit::select_arg('Mode:','mode',
                   1236: 					   [['show','Show'],
                   1237: 					    ['hide','Hide']]
                   1238: 					   ,$token);
                   1239: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
                   1240: 					     [ ['exam','Exam/Quiz Problem'],
                   1241: 					       ['survey','Survey'],
                   1242: 					       ['problem','Homework Problem'] ]
                   1243: 					     ,$token);
                   1244: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1245:     } elsif ($target eq 'modified') {
                   1246: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1247: 						     $safeeval,'mode','for');
                   1248: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1249:     }
                   1250:     return $result;
                   1251: }
                   1252: 
                   1253: sub end_problemtype {
1.159     albertel 1254:     return '';
1.24      albertel 1255: }
1.34      albertel 1256: 
                   1257: sub start_startouttext {
1.159     albertel 1258:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1259:     my @result=(''.'');
                   1260:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
                   1261:     return (@result);
1.34      albertel 1262: }
1.159     albertel 1263: 
1.34      albertel 1264: sub end_startouttext {
1.159     albertel 1265:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1266:     my $result='';
                   1267:     my $text='';
                   1268: 
                   1269:     if ($target eq 'edit') {
                   1270: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211     albertel 1271: 	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
                   1272: <td>".&mt('Delete:').
1.159     albertel 1273:                  &Apache::edit::deletelist($target,$token)
                   1274: 		 ."</td>
1.42      albertel 1275: <td>".
1.159     albertel 1276:                  &Apache::edit::insertlist($target,$token).
                   1277: 		 &Apache::edit::end_row().
                   1278:                  &Apache::edit::start_spanning_row()."\n"
1.188     bowersj2 1279: 		 . &Apache::loncommon::helpLatexCheatsheet () .
1.159     albertel 1280: 		 &Apache::edit::editfield($token->[1],$text,"",80,4);
                   1281:     }
                   1282:     if ($target eq 'modified') {
1.219     albertel 1283: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 1284:     }
                   1285:     if ($target eq 'tex') {
                   1286: 	$result .= '\noindent ';
                   1287:     }
                   1288:     return $result;
1.34      albertel 1289: }
1.159     albertel 1290: 
1.34      albertel 1291: sub start_endouttext {
1.159     albertel 1292:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1293:     my $result='';
                   1294:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   1295:     if ($target eq "modified") {
                   1296: 	$result='<endouttext />'.
                   1297: 	    &Apache::edit::handle_insertafter('startouttext'); }
                   1298:     return $result;
1.34      albertel 1299: }
1.159     albertel 1300: 
1.34      albertel 1301: sub end_endouttext {
1.159     albertel 1302:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1303:     my @result=('','');
                   1304:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   1305:     return (@result);
1.34      albertel 1306: }
1.159     albertel 1307: 
1.45      albertel 1308: sub delete_startouttext {
1.159     albertel 1309:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1310:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
                   1311:     my $text=$$parser['-1']->get_text("/endouttext");
                   1312:     my $ntoken=$$parser['-1']->get_token();
                   1313:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   1314:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   1315:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   1316:     # they did the last time round
                   1317:     &Apache::lonxml::increasedepth($ntoken);
                   1318:     &Apache::lonxml::decreasedepth($ntoken);
                   1319:     return 1;
1.193     www      1320: }
                   1321: 
                   1322: sub start_simpleeditbutton {
                   1323:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1324:     my $result='';
                   1325:     if (($target eq 'web') &&
                   1326:         (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220     www      1327:         my $url=$ENV{'request.noversionuri'};
1.193     www      1328:         $url=~s/\?.*$//;
1.194     www      1329: 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211     albertel 1330:                 '<a href="'.$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      1331: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193     www      1332:     }
                   1333:     return $result;
                   1334: }
                   1335: 
                   1336: sub end_simpleeditbutton {
                   1337:     return '';
1.45      albertel 1338: }
1.34      albertel 1339: 
1.1       albertel 1340: 1;
                   1341: __END__

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