Annotation of loncom/homework/structuretags.pm, revision 1.383

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.383   ! albertel    4: # $Id: structuretags.pm,v 1.382 2007/06/22 20:42:20 albertel Exp $
1.74      albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
1.254     www        28: ###
1.54      www        29: 
1.133     sakharuk   30: 
1.1       albertel   31: package Apache::structuretags; 
                     32: 
                     33: use strict;
                     34: use Apache::lonnet;
1.101     sakharuk   35: use Apache::File();
1.147     www        36: use Apache::lonmenu;
1.210     albertel   37: use Apache::lonlocal;
1.231     sakharuk   38: use Apache::lonxml;
1.338     albertel   39: use Apache::lonenc();
1.267     albertel   40: use Time::HiRes qw( gettimeofday tv_interval );
1.356     www        41: use lib '/home/httpd/lib/perl/';
                     42: use LONCAPA;
                     43:  
1.78      harris41   44: BEGIN {
1.248     albertel   45:     &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
1.10      albertel   46: }
                     47: 
                     48: sub start_web {
1.326     albertel   49:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383   ! albertel   50:     if ($target ne 'edit' && $target ne 'modified') {
        !            51: 	my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
        !            52: 	if ($target eq 'web' || $target eq 'webgrade') {
        !            53: 	    return $bodytext;
        !            54: 	}
        !            55:     } elsif ($target eq "edit" ) {
        !            56: 	my $bodytext = 
        !            57: 	    &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
        !            58: 	my $result = &Apache::edit::tag_start($target,$token);
        !            59: 	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
        !            60: 	return $result;
        !            61:     } elsif ( $target eq "modified" ) {
        !            62: 	return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159     albertel   63:     }
                     64:     return '';
1.10      albertel   65: }
                     66: 
                     67: sub end_web {
1.44      ng         68:     return '';
1.10      albertel   69: }
                     70: 
                     71: sub start_tex {
1.326     albertel   72:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198     sakharuk   73:     my $result='';
1.383   ! albertel   74:     if ($target ne 'edit' && $target ne 'modified') {
        !            75: 	my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
        !            76: 	if ($target eq 'tex') {
        !            77: 	    return $bodytext.' ';
        !            78: 	}
        !            79:     } elsif ($target eq "edit" ) {
        !            80: 	my $bodytext = 
        !            81: 	    &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
        !            82: 	my $result = &Apache::edit::tag_start($target,$token);
        !            83: 	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
        !            84: 	return $result;
        !            85:     } elsif ( $target eq "modified" ) {
        !            86: 	return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159     albertel   87:     }
1.198     sakharuk   88:     return $result;;
1.10      albertel   89: }
                     90: 
                     91: sub end_tex {
1.44      ng         92:     return '';
1.9       albertel   93: }
                     94: 
1.48      albertel   95: sub page_start {
1.345     albertel   96:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
                     97: 	$extra_head)=@_;
1.159     albertel   98:     my %found;
1.207     albertel   99:     foreach my $taginside (@$tagstack) {
1.159     albertel  100: 	foreach my $taglookedfor ('html','body','form') {
                    101: 	    if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
                    102: 	}
                    103:     }
                    104: 
1.343     albertel  105:     if ($target eq 'tex') {
                    106: 	return
                    107: 	    &Apache::londefdef::start_html($target,$token,$tagstack,
                    108: 					   $parstack,$parser,$safeeval);
                    109:     }
                    110: 
1.374     albertel  111:     $extra_head.= '
                    112: <script type="text/javascript">
                    113: function setSubmittedPart (part) {
                    114:    this.document.lonhomework.submitted.value="part_"+part;
                    115: }
                    116: </script>
                    117: ';
                    118: 
1.344     albertel  119:     my %body_args;
                    120:     if (defined($found{'html'})) {
                    121: 	$body_args{'skip_phases'}{'head'}=1;
                    122:     } else {
1.343     albertel  123: 	
1.345     albertel  124: 	$extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343     albertel  125: 
1.379     albertel  126: 	$extra_head .= &Apache::londefdef::generate_css_links();
                    127: 
1.327     albertel  128: 	if ($target eq 'edit') {
1.343     albertel  129: 	    $extra_head.=&Apache::edit::js_change_detection().
                    130: 		"<script type=\"text/javascript\">\n".
                    131: 		"if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
                    132: 		&Apache::loncommon::browser_and_searcher_javascript().
                    133:                 "\n</script>\n";
                    134: 	}
1.159     albertel  135:     }
1.343     albertel  136: 
1.344     albertel  137:     if (defined($found{'body'})) {
                    138: 	$body_args{'skip_phases'}{'body'}=1;
                    139:     } elsif (!defined($found{'body'}) 
                    140: 	     && $env{'request.state'} eq 'construct') {
1.343     albertel  141: 	if ($target eq 'web' || $target eq 'edit') {
1.344     albertel  142: 	    # no extra args to bodytag
1.297     albertel  143: 	}
1.272     albertel  144:     } elsif (!defined($found{'body'})) {
1.343     albertel  145: 	my %add_entries;
1.159     albertel  146: 	my $background=&Apache::lonxml::get_param('background',$parstack,
                    147: 						  $safeeval);
1.343     albertel  148: 	if ($background ne '' ) {
                    149: 	    $add_entries{'background'} = $background;
                    150: 	}
1.344     albertel  151: 
1.290     albertel  152: 	my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
                    153: 					       $safeeval);
1.344     albertel  154:        	if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
                    155: 
                    156: 	$body_args{'bgcolor'}        = $bgcolor;
                    157: 	$body_args{'no_title'}       = 1;
                    158: 	$body_args{'force_register'} = 1;
                    159: 	$body_args{'add_entries'}    = \%add_entries;	
                    160:     }
1.365     albertel  161:     $body_args{'no_auto_mt_title'} = 1;
1.344     albertel  162:     my $page_start = &Apache::loncommon::start_page($name,$extra_head,
                    163: 						    \%body_args);
                    164: 
                    165:     if (!defined($found{'body'}) 
                    166: 	&& $env{'request.state'} ne 'construct'
                    167: 	&& ($target eq 'web' || $target eq 'webgrade')) {
                    168: 
1.367     albertel  169: 	my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344     albertel  170: 	if ($symb eq '' && !$publicuser) {
                    171: 	    my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
                    172: 	    $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
                    173: 	    $page_start .= $help;
1.159     albertel  174: 	}
1.344     albertel  175:     }
                    176: 
                    177:     if (!defined($found{'body'})) {
1.343     albertel  178: 	$page_start .= &Apache::lonxml::message_location();
1.159     albertel  179:     }
1.344     albertel  180:     
1.159     albertel  181:     my $form_tag_start;
                    182:     if (!defined($found{'form'})) {
1.337     albertel  183: 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338     albertel  184: 	my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327     albertel  185: 	$form_tag_start.=$uri.'" ';
                    186: 	if ($target eq 'edit') {
                    187: 	    $form_tag_start.=&Apache::edit::form_change_detection();
                    188: 	}
1.368     albertel  189: 	$form_tag_start.='>'."\n";
1.355     albertel  190: 
                    191: 	my $symb=&Apache::lonnet::symbread();
                    192: 	if ($symb =~ /\S/) {
                    193: 	    $symb=
                    194: 		&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
                    195: 	    $form_tag_start.=
1.368     albertel  196: 		"\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355     albertel  197: 	}
1.159     albertel  198:     }
1.343     albertel  199:     return ($page_start,$form_tag_start);
1.105     albertel  200: }
                    201: 
1.141     matthew   202: #use Time::HiRes();
1.105     albertel  203: sub get_resource_name {
1.159     albertel  204:     my ($parstack,$safeeval)=@_;
1.204     albertel  205:     if (defined($Apache::lonhomework::name)) {
                    206: 	return $Apache::lonhomework::name;
                    207:     }
1.367     albertel  208:     my ($symb)=&Apache::lonnet::whichuser();
1.279     albertel  209:     my $name=&Apache::lonnet::gettitle($symb);
1.159     albertel  210:     if ($name eq '') {
                    211: 	$name=&Apache::lonnet::EXT('resource.title');
                    212: 	if ($name eq 'con_lost') { $name = ''; }
                    213:     }
1.204     albertel  214:     if ($name!~/\S+/) {
1.284     albertel  215: 	$name=$env{'request.uri'};
1.205     albertel  216: 	$name=~s-.*/([^/]+)$-$1-;
1.204     albertel  217:     }
1.159     albertel  218:     $Apache::lonhomework::name=$name;
                    219:     return $name;
1.105     albertel  220: }
                    221: 
                    222: sub setup_rndseed {
1.159     albertel  223:     my ($safeeval)=@_;
                    224:     my $rndseed;
1.367     albertel  225:     my ($symb)=&Apache::lonnet::whichuser();
1.333     albertel  226:     if ($env{'request.state'} eq "construct" 
                    227: 	|| $symb eq '' 
                    228: 	|| $Apache::lonhomework::type eq 'practice'
                    229: 	|| $Apache::lonhomework::history{'resource.CODE'}) {
1.316     www       230: 	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317     albertel  231: 						['rndseed']);
1.284     albertel  232: 	$rndseed=$env{'form.rndseed'};
1.159     albertel  233: 	if (!$rndseed) {
1.162     albertel  234: 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
                    235: 	    if (!$rndseed) {
                    236: 		$rndseed=time;
                    237: 	    }
1.284     albertel  238: 	    $env{'form.rndseed'}=$rndseed;
1.162     albertel  239: 	}
1.374     albertel  240: 	if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    241: 	      && $env{'form.submitted'} eq 'yes')  ||
1.284     albertel  242: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190     albertel  243: 	    srand(time);
                    244: 	    $rndseed=int(rand(2100000000));
1.284     albertel  245: 	    $env{'form.rndseed'}=$rndseed;
                    246: 	    delete($env{'form.resetdata'});
                    247: 	    delete($env{'form.newrandomization'});
1.159     albertel  248: 	}
1.187     albertel  249: 	if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307     albertel  250: 	    $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187     albertel  251:         }
1.247     albertel  252:         if ($Apache::lonhomework::history{'resource.CODE'}) {
                    253: 	   $rndseed=&Apache::lonnet::rndseed();
                    254: 	}
1.221     albertel  255: 	if ($safeeval) {
                    256: 	    &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250     albertel  257: 	    &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221     albertel  258: 	}
1.159     albertel  259:     }
                    260:     return $rndseed;
1.105     albertel  261: }
                    262: 
1.268     albertel  263: sub remember_problem_state {
                    264:     return '
1.284     albertel  265:        <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
                    266:        <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
                    267:        <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268     albertel  268: }
                    269: 
1.105     albertel  270: sub problem_edit_header {
1.268     albertel  271:     return '<input type="hidden" name="submitted" value="edit" />'.
                    272: 	&Apache::structuretags::remember_problem_state().'
1.210     albertel  273:        <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243     matthew   274:        <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328     albertel  275:        <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243     matthew   276:        <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
                    277:        <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
                    278:        <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.359     albertel  279:        &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.260     albertel  280:        .'</td></tr></table>'.
1.282     albertel  281:        '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105     albertel  282: }
                    283: 
                    284: sub problem_edit_footer {
1.210     albertel  285:     return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255     www       286:     <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348     albertel  287:     &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342     albertel  288:     "\n</form>\n".&Apache::loncommon::end_page();
1.105     albertel  289: }
                    290: 
1.235     albertel  291: sub option {
                    292:     my ($value,$name) = @_;
                    293:     my $result ="<option value='".$value."' ";
1.284     albertel  294:     if ($env{'form.'.$name} eq $value) {
1.235     albertel  295: 	$result.=" selected='on' ";
                    296:     }
                    297:     $result.='>';
                    298:     return $result;
                    299: }
                    300: 
1.105     albertel  301: sub problem_web_to_edit_header {
1.159     albertel  302:     my ($rndseed)=@_;
1.313     albertel  303:     my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373     albertel  304:     $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.313     albertel  305:     $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243     matthew   306:              <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
                    307:              <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210     albertel  308:              <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270     albertel  309:               <input type="text" name="rndseed" size="10" value="'.
1.175     albertel  310: 	       $rndseed.'"
1.270     albertel  311:            onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.281     albertel  312:              <label><input type="checkbox" name="showallfoils" ';
1.315     albertel  313:     my $show_all_foils_text = 
                    314: 	($Apache::lonhomework::parsing_a_task) ?
                    315: 	&mt('&nbsp;Show&nbsp;All&nbsp;Instances')
                    316: 	: &mt('&nbsp;Show&nbsp;All&nbsp;Foils');
                    317: 
1.284     albertel  318:     if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.371     albertel  319:     $result.= ' />'.$show_all_foils_text.'</label>'.
1.228     www       320: 	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.371     albertel  321: 	'<hr />';
1.313     albertel  322:     if (!$Apache::lonhomework::parsing_a_task) {
                    323: 	$result.="
1.235     albertel  324: <nobr>
                    325: Problem Status:
                    326: <select name='problemstate'>
1.270     albertel  327:   <option value=''></option>
1.235     albertel  328:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    329:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    330:   ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
                    331:   ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
                    332:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
                    333: </select>
                    334: </nobr>
                    335: <nobr>
                    336: Problem Type:
                    337: <select name='problemtype'>
1.270     albertel  338:   <option value=''></option>
1.242     albertel  339:   ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
                    340:   ".&option('problem','problemtype').&mt("Homework problem")."</option>
                    341:   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235     albertel  342: </select>
                    343: </nobr>
                    344: <nobr>
                    345: Feedback Mode:
                    346: <select name='problemstatus'>
                    347:   <option value=''></option>
1.242     albertel  348:   ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
                    349:   ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235     albertel  350: </select>
                    351: </nobr>
1.242     albertel  352: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235     albertel  353: <hr />";
1.313     albertel  354: 	my $numtoanalyze=$env{'form.numtoanalyze'};
                    355: 	if (!$numtoanalyze) { $numtoanalyze=20; }
                    356: 	$result.= '<input type="submit" name="problemmode" value='.
                    357: 	    &mt('"Calculate answers').'" /> for
1.136     albertel  358:              <input type="text" name="numtoanalyze" value="'.
1.210     albertel  359: 	     $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
                    360: 	     '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176     albertel  361: 						     '',undef,undef,300).
1.210     albertel  362: 						     '<hr />';
1.376     albertel  363:     } elsif ($Apache::lonhomework::parsing_a_task) {
                    364: 	$result.="
                    365: <nobr>
                    366: Problem Status:
                    367: <select name='problemstate'>
                    368:   <option value=''></option>
                    369:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    370:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    371:   ".&option('WEB_GRADE'            ,'problemstate').&mt("Criteria Grading")."</option>
                    372:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Feedback")."</option>
                    373: </select>
                    374: </nobr>
                    375: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
                    376: <hr />";
1.313     albertel  377:     }
1.159     albertel  378:     return $result;
1.48      albertel  379: }
                    380: 
1.65      albertel  381: sub initialize_storage {
1.357     albertel  382:     my ($given_symb) = @_;
1.353     albertel  383:     undef(%Apache::lonhomework::results);
                    384:     undef(%Apache::lonhomework::history);
1.357     albertel  385:     my ($symb,$courseid,$domain,$name) = 
1.367     albertel  386: 	&Apache::lonnet::whichuser($given_symb);
1.353     albertel  387:     
                    388:     # anonymous users (CODEd exams) have no data
                    389:     if ($name eq 'anonymous' 
                    390: 	&& !defined($domain)) {
                    391: 	return;
                    392:     }
                    393: 
1.333     albertel  394:     if ($env{'request.state'} eq 'construct' 
                    395: 	|| $symb eq ''
                    396: 	|| $Apache::lonhomework::type eq 'practice') {
                    397: 	
                    398: 	my $namespace = $symb || $env{'request.uri'};
                    399: 	if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374     albertel  400: 	    ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    401: 	     && $env{'form.submitted'} eq 'yes') ||
1.333     albertel  402: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
                    403: 	    &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
                    404: 	    &Apache::lonxml::debug("Attempt reset");
                    405: 	}
1.159     albertel  406: 	%Apache::lonhomework::history=
1.333     albertel  407: 	    &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159     albertel  408: 	my ($temp)=keys %Apache::lonhomework::history ;
                    409: 	&Apache::lonxml::debug("Return message of $temp");
                    410:     } else {
                    411: 	%Apache::lonhomework::history=
                    412: 	    &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                    413:     }
1.353     albertel  414: 
1.159     albertel  415:     #ignore error conditions
1.67      albertel  416:     my ($temp)=keys %Apache::lonhomework::history ;
1.159     albertel  417:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65      albertel  418: }
                    419: 
                    420: # -------------------------------------------------------------finalize_storage
                    421: # Stores away the result has to a student's environment
                    422: # checks form.grade_ for specific values, other wises stores
                    423: # to the running users environment
1.285     raeburn   424: # Will increment totals for attempts, students, and corrects
                    425: # if running user has student role.  
1.65      albertel  426: sub finalize_storage {
1.357     albertel  427:     my ($given_symb) = @_;
1.159     albertel  428:     my $result;
1.289     albertel  429:     if (%Apache::lonhomework::results) {
1.323     albertel  430: 	my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
                    431: 	delete(@Apache::lonhomework::results{@remove});
1.357     albertel  432: 	my ($symb,$courseid,$domain,$name) = 
1.367     albertel  433: 	    &Apache::lonnet::whichuser($given_symb);
1.333     albertel  434: 	if ($env{'request.state'} eq 'construct' 
                    435: 	    || $symb eq ''
                    436: 	    || $Apache::lonhomework::type eq 'practice') {
                    437: 	    my $namespace = $symb || $env{'request.uri'};
1.284     albertel  438: 	    $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159     albertel  439: 	    $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333     albertel  440: 					      $namespace,'',$domain,$name);
1.159     albertel  441: 	    &Apache::lonxml::debug('Construct Store return message:'.$result);
                    442: 	} else {
                    443: 	    $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
                    444: 					    $symb,$courseid,$domain,$name);
                    445: 	    &Apache::lonxml::debug('Store return message:'.$result);
1.285     raeburn   446:             if ($env{'request.role'} =~/^st/) {
                    447:                 &store_aggregates($symb,$courseid);
                    448:             }
1.159     albertel  449: 	}
1.323     albertel  450:     } else {
                    451: 	&Apache::lonxml::debug('Nothing to store');
1.67      albertel  452:     }
1.159     albertel  453:     return $result;
1.65      albertel  454: }
1.289     albertel  455: use Data::Dumper;
1.65      albertel  456: 
1.285     raeburn   457: # -------------------------------------------------------------store_aggregates
                    458: # Sends hash of values to be incremented in nohist_resourcetracker.db
                    459: # for the course. Increments total number of attempts, unique students 
                    460: # and corrects for each part for an instance of a problem, as appropriate.
                    461: sub store_aggregates {
                    462:     my ($symb,$courseid) = @_;
1.286     albertel  463:     my %aggregate;
                    464:     my @parts;
1.288     albertel  465:     my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
                    466:     my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286     albertel  467:     foreach my $key (keys(%Apache::lonhomework::results)) {
1.287     albertel  468:         if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286     albertel  469:             push(@parts, $1);
1.285     raeburn   470:         }
                    471:     }
1.286     albertel  472:     foreach my $part (@parts) {
                    473:         if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
                    474: 	    eq 'APPROX_ANS' ||
                    475: 	    $Apache::lonhomework::results{'resource.'.$part.'.award'}
                    476: 	    eq 'EXACT_ANS') {
1.287     albertel  477:             $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285     raeburn   478:         }
1.286     albertel  479:         if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287     albertel  480:             $aggregate{$symb."\0".$part."\0users"} = 1;
1.292     raeburn   481:         } else {
1.293     albertel  482:             my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]); 
1.292     raeburn   483:             if ($last_reset) {
1.293     albertel  484:                 if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292     raeburn   485:                     $aggregate{$symb."\0".$part."\0users"} = 1;
                    486:                 }
                    487:             }
1.285     raeburn   488:         }
1.287     albertel  489:         $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285     raeburn   490:     }
1.292     raeburn   491:     if (keys (%aggregate) > 0) {
1.289     albertel  492: 	&Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292     raeburn   493:                             $cdomain,$cname);
                    494:     }
                    495: }
1.289     albertel  496: 
1.65      albertel  497: sub checkout_msg {
1.211     albertel  498:     my %lt=&Apache::lonlocal::texthash( 
                    499: 		'resource'=>'The resource needs to be checked out',
                    500: 		'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.',
                    501:                 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
                    502:                 'checkout'=>'Check out Exam for Viewing',
                    503: 		'checkout?'=>'Check out Exam?');
1.352     albertel  504:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159     albertel  505:     return (<<ENDCHECKOUT);
1.211     albertel  506: <h2>$lt{'resource'}</h2>
                    507:     <p>$lt{'id_expln'}</p>
                    508: <font color="red">
                    509: <p>$lt{'warning'}</p>
1.91      albertel  510: </font>
1.352     albertel  511: <form name="checkout" method="POST" action="$uri">
1.91      albertel  512: <input type="hidden" name="doescheckout" value="yes" />
1.211     albertel  513: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel  514: </form>
                    515: ENDCHECKOUT
                    516: }
                    517: 
1.252     albertel  518: sub firstaccess_msg {
1.253     albertel  519:     my ($time,$symb)=@_;
                    520:     my ($map)=&Apache::lonnet::decode_symb($symb);
                    521:     my $foldertitle=&Apache::lonnet::gettitle($map);
                    522:     &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352     albertel  523:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252     albertel  524:     return (<<ENDCHECKOUT);
1.253     albertel  525: <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
1.352     albertel  526: <form name="markaccess" method="POST" action="$uri">
1.252     albertel  527: <input type="hidden" name="markaccess" value="yes" />
                    528: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
                    529: </form>
                    530: ENDCHECKOUT
                    531: }
                    532: 
1.204     albertel  533: sub init_problem_globals {
                    534:     my ($type)=@_;
                    535:     #initialize globals
1.308     foxr      536:     #   For problems, we start out in part 0 (outside a <part> tag).
                    537:     #   and part 0 is used to describe the main body of the <problem>
                    538:     #
1.204     albertel  539:     if ($type eq 'problem') {
                    540: 	$Apache::inputtags::part='0';
                    541: 	@Apache::inputtags::partlist=('0');
1.266     albertel  542: 	$Apache::lonhomework::problemstatus=&get_problem_status('0');
                    543: 	$Apache::lonhomework::ignore_response_errors=0;
1.308     foxr      544: 
1.266     albertel  545:     } elsif ($type eq 'library') {
1.204     albertel  546: 	$Apache::inputtags::part='';
                    547: 	@Apache::inputtags::partlist=();
                    548: 	$Apache::lonhomework::problemstatus='';	
1.266     albertel  549: 	$Apache::lonhomework::ignore_response_errors=1;
1.308     foxr      550: 
1.304     albertel  551:     } elsif ($type eq 'Task') {
                    552: 	$Apache::inputtags::part='0';
                    553: 	@Apache::inputtags::partlist=('0');
                    554: 	$Apache::lonhomework::problemstatus='';	
                    555: 	$Apache::lonhomework::ignore_response_errors=1;
1.204     albertel  556:     }
                    557:     @Apache::inputtags::responselist = ();
                    558:     @Apache::inputtags::importlist = ();
                    559:     @Apache::inputtags::previous=();
                    560:     @Apache::inputtags::previous_version=();
                    561:     $Apache::structuretags::printanswer='No';
                    562:     @Apache::structuretags::whileconds=();
                    563:     @Apache::structuretags::whilebody=();
                    564:     @Apache::structuretags::whileline=();
                    565:     $Apache::lonhomework::scantronmode=0;
                    566:     undef($Apache::lonhomework::name);
1.358     albertel  567:     undef($Apache::lonhomework::default_type);
                    568:     undef($Apache::lonhomework::type);
1.204     albertel  569: }
                    570: 
                    571: sub reset_problem_globals {
                    572:     my ($type)=@_;
                    573:     undef(%Apache::lonhomework::history);
                    574:     undef(%Apache::lonhomework::results);
                    575:     undef($Apache::inputtags::part);
1.208     albertel  576: #don't undef this, lonhomework.pm takes care of this, we use this to 
                    577: #detect if we try to do 2 problems in one file
                    578: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel  579:     undef($Apache::lonhomework::name);
1.358     albertel  580:     undef($Apache::lonhomework::default_type);
                    581:     undef($Apache::lonhomework::type);
                    582:     undef($Apache::lonhomework::scantronmode);
                    583:     undef($Apache::lonhomework::problemstatus);
                    584:     undef($Apache::lonhomework::ignore_response_errors);
1.204     albertel  585: }
                    586: 
1.241     albertel  587: sub set_problem_state {
1.240     albertel  588:     my ($part)=@_;
1.284     albertel  589:     if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240     albertel  590: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                    591: 	    'correct_by_student';
                    592:     }
                    593: }
                    594: 
1.241     albertel  595: sub get_problem_status {
                    596:     my ($part)=@_;
1.267     albertel  597:     my $problem_status;
1.284     albertel  598:     if ($env{'request.state'} eq 'construct' &&
                    599: 	defined($env{'form.problemstatus'})) {
                    600: 	$problem_status=$env{'form.problemstatus'};
1.267     albertel  601:     } else {
                    602: 	$problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                    603: 	&Apache::lonxml::debug("problem status for $part is $problem_status");
1.284     albertel  604: 	&Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241     albertel  605:     }
                    606:     return $problem_status;
                    607: }
                    608: 
1.9       albertel  609: sub start_problem {
1.326     albertel  610:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19      albertel  611: 
1.311     foxr      612:     # We'll use the redirection to fix up printing of duedates.
1.321     albertel  613:     if (!$Apache::lonxml::metamode) {
                    614: 	&Apache::lonxml::startredirection();
                    615:     }
1.311     foxr      616: 
1.308     foxr      617:     # Problems don't nest and we don't allow more than one <problem> in
                    618:     # a .problem file.
                    619:     #
1.184     albertel  620:     if ( $Apache::inputtags::part ne '' ||
                    621: 	 $Apache::lonhomework::parsing_a_problem) {
                    622: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
1.326     albertel  623: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159     albertel  624: 	return '';
                    625:     }
1.184     albertel  626: 
                    627:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel  628:     &init_problem_globals('problem');
1.166     albertel  629: 
1.284     albertel  630:     if (defined($env{'scantron.maxquest'})) {
1.166     albertel  631: 	$Apache::lonhomework::scantronmode=1;
                    632:     }
1.161     albertel  633: 
1.159     albertel  634:     if ($target ne 'analyze') {
1.284     albertel  635:        	if ($env{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159     albertel  636: 	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284     albertel  637: 	if (($env{'request.state'} eq 'construct') &&
                    638: 	    defined($env{'form.problemtype'})) {
                    639: 	    $Apache::lonhomework::type=$env{'form.problemtype'};
1.237     albertel  640: 	}
1.332     albertel  641: 	&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159     albertel  642:     }
1.164     albertel  643:     if ($Apache::lonhomework::type eq '' ) {
1.284     albertel  644: 	my $uri=$env{'request.uri'};
1.159     albertel  645: 	if ($uri=~/\.(\w+)$/) {
                    646: 	    $Apache::lonhomework::type=$1;
                    647: 	    &Apache::lonxml::debug("Using type of $1");
                    648: 	} else {
                    649: 	    $Apache::lonhomework::type='problem';
                    650: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                    651: 	}
1.87      albertel  652:     }
1.301     albertel  653:     $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58      www       654: 
1.363     albertel  655:     &initialize_storage();
1.366     albertel  656:     if ($target eq 'web') {
                    657: 	&Apache::lonxml::debug(" grading history ");
                    658: 	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
                    659:     }
1.363     albertel  660: 
1.159     albertel  661:     #added vars to the scripting enviroment
1.213     albertel  662:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248     albertel  663:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel  664:     &Apache::run::run($expression,$safeeval);
1.159     albertel  665:     my $status;
                    666:     my $accessmsg;
                    667: 
1.343     albertel  668:     my $name= &get_resource_name($parstack,$safeeval);
1.350     albertel  669:     my ($result,$form_tag_start);
1.354     albertel  670:     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
                    671: 	|| $target eq 'edit') {
1.350     albertel  672: 	($result,$form_tag_start) =
                    673: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                    674: 			$name);
                    675:     }
                    676: 
1.284     albertel  677:     if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159     albertel  678: 
                    679:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
                    680:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    681: 	$target eq 'tex') {
                    682: 	#handle exam checkout
                    683: 	if ($Apache::lonhomework::type eq 'exam') {
                    684: 	    my $token=
                    685: 		$Apache::lonhomework::history{"resource.0.outtoken"};
1.284     albertel  686: 	    if (($env{'form.doescheckout'}) && (!$token)) {
1.159     albertel  687: 		$token=&Apache::lonxml::maketoken();
                    688: 		$Apache::lonhomework::history{"resource.0.outtoken"}=
                    689: 		    $token;
                    690: 	    }
1.343     albertel  691: 	    $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142     albertel  692: 	}
1.284     albertel  693: 	if ($env{'form.markaccess'}) {
1.252     albertel  694: 	    &Apache::lonnet::set_first_access('map');
                    695: 	}
1.159     albertel  696: 	#handle rand seed in construction space
                    697: 	my $rndseed=&setup_rndseed($safeeval);
1.367     albertel  698: 	my ($symb)=&Apache::lonnet::whichuser();
1.333     albertel  699: 	if ($env{'request.state'} ne "construct" && 
                    700: 	    ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162     albertel  701: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
                    702: 		$rndseed.'" />'.
                    703: 		    '<input type="submit" name="resetdata"
1.334     albertel  704:                              value="'.&mt('New Problem Variation').'" />';
                    705: 	    if (exists($env{'form.username'})) {
                    706: 		$form_tag_start.=
1.164     albertel  707: 		    '<input type="hidden" name="username"
1.284     albertel  708:                              value="'.$env{'form.username'}.'" />';
1.334     albertel  709: 	    }
1.333     albertel  710: 	    if ($env{'request.role.adv'}) {
1.267     albertel  711: 		$form_tag_start.=
1.300     albertel  712: 		    ' <label><input type="checkbox" name="showallfoils" ';
1.284     albertel  713: 		if (defined($env{'form.showallfoils'})) {
1.267     albertel  714: 		    $form_tag_start.='checked="on"';
                    715: 		}
1.300     albertel  716: 		$form_tag_start.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').
                    717: 		    '</label>';
1.267     albertel  718: 	    }
                    719: 	    $form_tag_start.='<hr />';
1.162     albertel  720: 	}
1.324     albertel  721: 
                    722: 	($status,$accessmsg,my $slot_name,my $slot) = 
                    723: 	    &Apache::lonhomework::check_slot_access('0','problem');
1.159     albertel  724: 	push (@Apache::inputtags::status,$status);
1.324     albertel  725: 
1.159     albertel  726: 	my $expression='$external::datestatus="'.$status.'";';
                    727: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                    728: 	&Apache::run::run($expression,$safeeval);
                    729: 	&Apache::lonxml::debug("Got $status");
1.324     albertel  730: 
1.159     albertel  731: 	if (( $status eq 'CLOSED' ) ||
                    732: 	    ( $status eq 'UNCHECKEDOUT') ||
1.252     albertel  733: 	    ( $status eq 'NOT_YET_VIEWED') ||
1.159     albertel  734: 	    ( $status eq 'BANNED') ||
1.216     albertel  735: 	    ( $status eq 'UNAVAILABLE') ||
1.324     albertel  736: 	    ( $status eq 'NOT_IN_A_SLOT') ||
1.216     albertel  737: 	    ( $status eq 'INVALID_ACCESS')) {
1.326     albertel  738: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                    739: 						       $style);
1.159     albertel  740: 	    if ( $target eq "web" ) {
1.343     albertel  741: 		my $msg;
1.159     albertel  742: 		if ($status eq 'UNAVAILABLE') {
1.245     albertel  743: 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253     albertel  744: 		} elsif ($status ne 'NOT_YET_VIEWED') {
1.245     albertel  745: 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159     albertel  746: 		}
1.216     albertel  747: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159     albertel  748: 		    $msg.='The problem '.$accessmsg;
                    749: 		} elsif ($status eq 'UNCHECKEDOUT') {
1.343     albertel  750: 		    $msg.=&checkout_msg();
1.252     albertel  751: 		} elsif ($status eq 'NOT_YET_VIEWED') {
1.253     albertel  752: 		    $msg.=&firstaccess_msg($accessmsg,$symb);
1.325     albertel  753: 		} elsif ($status eq 'NOT_IN_A_SLOT') {
                    754: 		    $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159     albertel  755: 		}
                    756: 		$result.=$msg.'<br />';
                    757: 	    } elsif ($target eq 'tex') {
1.332     albertel  758: 		my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
                    759: 		                    : '\begin{minipage}{\textwidth}';
                    760: 		$result.='\begin{document}\noindent \vskip 1 mm '.
                    761: 		    $startminipage.'\vskip 0 mm';
1.159     albertel  762: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel  763: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel  764: 		} else {
1.211     albertel  765: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel  766: 		}
                    767: 	    }
1.324     albertel  768: 	} elsif ($status eq 'NEEDS_CHECKIN') {
1.326     albertel  769: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                    770: 						       $style);
1.324     albertel  771: 	    if ($target eq 'web') {
1.375     albertel  772: 		$result .= 
                    773: 		    &Apache::bridgetask::proctor_validation_screen($slot);
1.324     albertel  774: 	    } elsif ($target eq 'grade') {
                    775: 		&Apache::bridgetask::proctor_check_auth($slot_name,$slot,
                    776: 							'problem');
                    777: 	    }
1.159     albertel  778: 	} elsif ($target eq 'web') {
1.360     albertel  779: 	    if ($status eq 'CAN_ANSWER' 
                    780: 		&& $slot_name ne ''
                    781: 		&& $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
                    782: 		# unproctored slot access, self checkin
                    783: 		&Apache::bridgetask::check_in('problem',undef,undef,
                    784: 					      $slot_name);
                    785: 	    }
1.368     albertel  786: 	    $result.="\n $form_tag_start \t".	
1.227     albertel  787: 	      '<input type="hidden" name="submitted" value="yes" />';
                    788: 	    # create a page header and exit
1.284     albertel  789: 	    if ($env{'request.state'} eq "construct") {
                    790: 		$result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227     albertel  791: 	    }
                    792: 	    # if we are viewing someone else preserve that info
1.284     albertel  793: 	    if (defined $env{'form.grade_symb'}) {
1.227     albertel  794: 		foreach my $field ('symb','courseid','domain','username') {
                    795: 		    $result .= '<input type="hidden" name="grade_'.$field.
1.284     albertel  796: 			'" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159     albertel  797: 		}
                    798: 	    }
                    799: 	} elsif ($target eq 'tex') {
1.319     foxr      800: 	    $result .= 'INSERTTEXFRONTMATTERHERE';
                    801: 
1.99      sakharuk  802: 	}
1.159     albertel  803:     } elsif ($target eq 'edit') {
1.343     albertel  804: 	$result .= $form_tag_start.&problem_edit_header();
1.226     albertel  805: 	$Apache::lonxml::warnings_error_header=
                    806: 	    &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  807: 	my $temp=&Apache::edit::insertlist($target,$token);
                    808: 	$result.=$temp;
                    809:     } elsif ($target eq 'modified') {
                    810: 	$result=$token->[4];
                    811:     } else {
                    812: 	# page_start returned a starting result, delete it if we don't need it
                    813: 	$result = '';
1.99      sakharuk  814:     }
1.159     albertel  815:     return $result;
1.9       albertel  816: }
                    817: 
                    818: sub end_problem {
1.159     albertel  819:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321     albertel  820:     my $result;
1.310     foxr      821: 
1.321     albertel  822:     if (!$Apache::lonxml::metamode) {
                    823: 	$result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329     albertel  824: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel  825:     }
1.319     foxr      826: 
                    827:     if ($target eq 'tex') {
1.321     albertel  828: 	# Figure out the front matter and replace the
                    829: 	# INSERTTEXFRONTMATTERHERE in result with it.  note that we do
                    830: 	# this in end_problem because whether or not we display due
                    831: 	# dates depends on whether due dates have already been
                    832: 	# displayed in the problem parts.
                    833: 
1.319     foxr      834: 	my $frontmatter   = '';
                    835: 	my $startminipage = '';
                    836: 	if (not $env{'form.problem_split'}=~/yes/) {
                    837: 	    $startminipage = '\begin{minipage}{\textwidth}';
                    838: 	}
                    839: 	my $id = $Apache::inputtags::part;
                    840: 	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
                    841: 	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
                    842: 	my @packages = split /,/,$packages;
                    843: 	my $allow_print_points = 0;
                    844: 	foreach my $partial_key (@packages) {
                    845: 	    if ($partial_key=~m/^part_0$/) {
                    846: 		$allow_print_points=1;
                    847: 	    }
                    848: 	}
                    849: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                    850: 	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
                    851: 	if (lc($env{'course.'.$env{'request.course.id'}.
                    852: 			'.disableexampointprint'}) eq 'yes') {
                    853: 	    $allow_print_points=0;
                    854: 	}
                    855: 	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
                    856: 	my $begin_doc='\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
                    857: 	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
                    858: 	    '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
                    859: 	
                    860: 	#  Figure out what the due date is and if we need to print
                    861: 	#  it in the problem header.  We have been logging the
                    862: 	#  last due date written to file. 
                    863: 	
                    864: 	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate"); 
                    865: 	my $duedate = POSIX::strftime("%c",localtime($duetime));
                    866: 	my $temp_file;
                    867: 	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
                    868: 	
                    869: 	# Figure out what the last printed due date is or set it
                    870: 	# to the epoch if no duedates have been printed.
                    871: 	
                    872: 	my $due_file_content = 0;      #   If the file does not yet exist, time is the epoch.
                    873: 	if (-e $filename) {
                    874: 	    $temp_file = Apache::File->new($filename);
                    875: 	    my @due_file      = <$temp_file>;
                    876: 	    $due_file_content = $due_file[$#due_file];
                    877: 	    chomp $due_file_content;
                    878: 	} 
                    879: 	
                    880: 	# We display the due date iff it is not the same as the last
                    881: 	# duedate in problem header ($due_file_content), and
                    882: 	# none of our parts displayed a duedate.
                    883: 	#
                    884: 	my $parts_with_displayduedate;
                    885: 	if (defined $Apache::outputtags::showonce{'displayduedate'}) {
                    886: 	    $parts_with_displayduedate = 
                    887: 		scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
                    888: 	} else {
                    889: 	    $parts_with_displayduedate = 0;
                    890: 	}
                    891: 	if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
                    892: 	    $temp_file = Apache::File->new('>'.$filename);
                    893: 	    print $temp_file "$duetime\n";
                    894: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    895: 		if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
                    896: 		    $frontmatter .= $begin_doc.
                    897: 			'\textit{Due date: '.$duedate.'} '.$toc_line;
                    898: 		} else {
                    899: 		    $frontmatter.= $begin_doc.$toc_line;
                    900: 		    if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    901: 		}
                    902: 	    } else {
1.381     albertel  903: 		$frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319     foxr      904: 	    }
                    905: 	} else {
                    906: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    907: 		$frontmatter .= $begin_doc.$toc_line;
                    908: 		if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    909: 	    } else {
1.381     albertel  910: 		$frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319     foxr      911: 	    }
                    912: 	}
                    913: 	$result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
                    914:     }
                    915: 
1.159     albertel  916:     my $status=$Apache::inputtags::status['-1'];
                    917:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    918: 	$target eq 'tex') {
1.249     albertel  919: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159     albertel  920: 	    # if part is zero, no <part>s existed, so we need to the grading
1.249     albertel  921: 	    if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
                    922: 		&Apache::inputtags::grade;
1.324     albertel  923: 	    } elsif ($status eq 'NEEDS_CHECKIN') {
                    924: 		# no need to grade, and don't want to hide data
1.249     albertel  925: 	    } else {
                    926: 		# move any submission data to .hidden
                    927: 		&Apache::inputtags::hidealldata($Apache::inputtags::part);
                    928: 	    }
1.159     albertel  929: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                    930: 		  $Apache::inputtags::part eq '0' &&
1.252     albertel  931: 		  $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159     albertel  932: 	    # if part is zero, no <part>s existed, so we need show the current
                    933: 	    # grading status
                    934: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                    935: 	    $result.= $gradestatus;
                    936: 	}
                    937: 	if (
1.284     albertel  938: 	    (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159     albertel  939: 	    ($target eq 'answer') || ($target eq 'tex')
                    940: 	   ) {
1.227     albertel  941: 	    if ($target ne 'tex' &&
1.284     albertel  942: 		$env{'form.answer_output_mode'} ne 'tex') {
1.254     www       943: 		$result.="</form>";
1.348     albertel  944: 		$result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159     albertel  945: 	    }
                    946: 	    if ($target eq 'web') {
1.346     albertel  947: 		$result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159     albertel  948: 	    } elsif ($target eq 'tex') {
1.178     sakharuk  949: 		my $endminipage = '';
1.284     albertel  950: 		if (not $env{'form.problem_split'}=~/yes/) {
1.178     sakharuk  951: 		    $endminipage = '\end{minipage}';
                    952: 		}
1.284     albertel  953:                 if ($env{'form.print_discussions'} eq 'yes') {
1.263     sakharuk  954: 		    $result.=&Apache::lonxml::xmlend($target,$parser);
1.159     albertel  955: 		} else {
1.262     sakharuk  956: 		    $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284     albertel  957: 		    if (not $env{'request.symb'} =~ m/\.page_/) {
1.262     sakharuk  958: 			$result .= $endminipage.'\end{document} ';
                    959: 		    } else {
1.382     albertel  960: 			$result .= $endminipage;
1.262     sakharuk  961: 		    }
1.159     albertel  962: 		}
                    963: 	    }
                    964: 	}
                    965: 	if ($target eq 'grade') {
                    966: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                    967: 	    &finalize_storage();
                    968: 	}
1.284     albertel  969: 	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
                    970: 	    && $env{'form.answer_output_mode'} ne 'tex') {
1.346     albertel  971: 	    $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294     albertel  972: 	                        # normally we get it from above, but in CSTR
1.172     albertel  973: 	                        # we always show answer mode too.
1.159     albertel  974: 	}
                    975:     } elsif ($target eq 'meta') {
                    976: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel  977: 	    @Apache::inputtags::response=();
1.159     albertel  978: 	    $result=&Apache::response::mandatory_part_meta;
                    979: 	}
1.215     albertel  980: 	$result.=&Apache::response::meta_part_order();
1.258     albertel  981: 	$result.=&Apache::response::meta_response_order();
1.159     albertel  982:     } elsif ($target eq 'edit') {
                    983: 	&Apache::lonxml::debug("in end_problem with $target, edit");
1.314     albertel  984: 	$result .= &problem_edit_footer();
1.320     albertel  985:     } elsif ($target eq 'modified') {
                    986: 	 $result .= $token->[2];
1.159     albertel  987:     }
1.155     albertel  988: 
1.284     albertel  989:     if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177     albertel  990: 	&Apache::inputtags::check_for_duplicate_ids();
                    991:     }
1.204     albertel  992: 
                    993:     &reset_problem_globals('problem');
1.159     albertel  994: 
                    995:     return $result;
1.48      albertel  996: }
                    997: 
1.108     albertel  998: 
1.48      albertel  999: sub start_library {
1.159     albertel 1000:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343     albertel 1001:     my ($result,$form_tag_start);
1.371     albertel 1002:     if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244     albertel 1003: 	&init_problem_globals('library');
                   1004: 	$Apache::lonhomework::type='problem';
                   1005:     }
1.159     albertel 1006:     if ($target eq 'edit') {
1.343     albertel 1007: 	($result,$form_tag_start)=
                   1008: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1009: 			'Edit');
                   1010: 	$result.=$form_tag_start.&problem_edit_header();
1.159     albertel 1011: 	my $temp=&Apache::edit::insertlist($target,$token);
                   1012: 	$result.=$temp;
                   1013:     } elsif ($target eq 'modified') {
                   1014: 	$result=$token->[4];
1.340     albertel 1015:     } elsif (($target eq 'web' || $target eq 'webgrade')
1.371     albertel 1016: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340     albertel 1017: 	     && $env{'request.state'} eq "construct" ) {
1.159     albertel 1018: 	my $name=&get_resource_name($parstack,$safeeval);
1.343     albertel 1019: 	($result,$form_tag_start)=
                   1020: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1021: 			$name);
1.159     albertel 1022: 	my $rndseed=&setup_rndseed($safeeval);
1.343     albertel 1023: 	$result.=" \n $form_tag_start".	
1.159     albertel 1024: 		  '<input type="hidden" name="submitted" value="yes" />';
                   1025: 	$result.=&problem_web_to_edit_header($rndseed);
                   1026:     }
                   1027:     return $result;
1.48      albertel 1028: }
                   1029: 
                   1030: sub end_library {
1.159     albertel 1031:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1032:     my $result='';
                   1033:     if ($target eq 'edit') {
                   1034: 	$result=&problem_edit_footer();
1.371     albertel 1035:     } elsif ($target eq 'web' 
                   1036: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library') 
                   1037: 	     && $env{'request.state'} eq "construct") {
1.349     albertel 1038: 	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159     albertel 1039:     }
1.371     albertel 1040:     if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
                   1041: 	&reset_problem_globals('library');
                   1042:     }
1.159     albertel 1043:     return $result;
1.197     www      1044: }
                   1045: 
                   1046: sub start_definetag {
1.326     albertel 1047:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197     www      1048: 
                   1049:     my $result;
                   1050: 
                   1051:     my $name = $token->[2]->{'name'};
1.326     albertel 1052:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.197     www      1053:     if ($name=~/^\//) {
                   1054: 	$result=
                   1055:  '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
                   1056:     } else {
                   1057: 	$result=
                   1058:  '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
                   1059:     }
                   1060:     $skip=~s/\</\&lt\;/gs;
                   1061:     $skip=~s/\>/\&gt\;/gs;
                   1062:     $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
                   1063:     return $result;
                   1064: }
                   1065: 
                   1066: sub end_definetag {
                   1067:     return '';
1.1       albertel 1068: }
                   1069: 
                   1070: sub start_block {
1.201     albertel 1071:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel 1072: 
                   1073:     my $result;
1.1       albertel 1074: 
1.339     albertel 1075:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer'  ||
                   1076: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159     albertel 1077: 	my $code = $token->[2]->{'condition'};
1.201     albertel 1078: 	if (defined($code)) {
1.137     albertel 1079: 	    if (!$Apache::lonxml::default_homework_loaded) {
                   1080: 		&Apache::lonxml::default_homework_load($safeeval);
                   1081: 	    }
1.131     albertel 1082: 	    $result = &Apache::run::run($code,$safeeval);
                   1083: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                   1084: 	} else {
                   1085: 	    $result='1';
                   1086: 	}
                   1087: 	if ( ! $result ) {
1.201     albertel 1088: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel 1089: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1090: 	}
                   1091: 	$result='';
                   1092:     } elsif ($target eq 'edit') {
                   1093: 	$result .=&Apache::edit::tag_start($target,$token);
                   1094: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                   1095: 					  $token,40);
                   1096: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1097:     } elsif ($target eq 'modified') {
                   1098: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1099: 						     $safeeval,'condition');
                   1100: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel 1101:     }
1.131     albertel 1102:     return $result;
1.1       albertel 1103: }
                   1104: 
                   1105: sub end_block {
1.167     www      1106:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1107:     my $result;
                   1108:     if ($target eq "edit") {
                   1109: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1110:     }
                   1111:     return $result;
                   1112: }
                   1113: 
                   1114: sub start_languageblock {
1.201     albertel 1115:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www      1116: 
                   1117:     my $result;
                   1118: 
1.339     albertel 1119:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1120: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201     albertel 1121: 	my $include = $token->[2]->{'include'};
                   1122: 	my $exclude = $token->[2]->{'exclude'};
                   1123:         my %languages=&Apache::loncommon::display_languages();
                   1124:         $result='1';
                   1125: 	if ($include) {
                   1126:             $result='';
                   1127:             foreach (split(/\,/,$include)) {
                   1128:                 if ($languages{$_}) { $result='1'; }
                   1129:             }
                   1130: 	}
                   1131:         if ($exclude) {
                   1132:             foreach (split(/\,/,$exclude)) {
                   1133:                 if ($languages{$_}) { $result='0'; }
                   1134:             }
                   1135: 	}
                   1136: 	if ( ! $result ) {
                   1137: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                   1138: 						   $style);
                   1139: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1140: 	}
                   1141: 	$result='';
1.167     www      1142:     } elsif ($target eq 'edit') {
                   1143: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1144: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www      1145: 					  $token,40);
1.211     albertel 1146: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www      1147: 					  $token,40);
                   1148: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1149:     } elsif ($target eq 'modified') {
                   1150: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel 1151: 						     $safeeval,'include',
                   1152: 						     'exclude');
1.167     www      1153: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1154:     }
                   1155:     return $result;
                   1156: }
                   1157: 
                   1158: sub end_languageblock {
1.170     www      1159:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1160:     my $result;
1.201     albertel 1161:     if ($target eq "edit") {
1.170     www      1162: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1163:     }
                   1164:     return $result;
                   1165: }
                   1166: 
                   1167: sub start_instructorcomment {
1.201     albertel 1168:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www      1169: 
                   1170:     my $result;
                   1171: 
1.339     albertel 1172:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1173: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284     albertel 1174:         $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
                   1175: 	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201     albertel 1176: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                   1177: 						   $parser,$style);
1.170     www      1178: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1179: 	}
                   1180: 	$result='';
                   1181:     } elsif ($target eq 'edit') {
                   1182: 	$result .=&Apache::edit::tag_start($target,$token);
                   1183: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1184:     }
                   1185:     return $result;
                   1186: }
                   1187: 
                   1188: sub end_instructorcomment {
1.159     albertel 1189:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1190:     my $result;
                   1191:     if ($target eq "edit") {
                   1192: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1193:     }
                   1194:     return $result;
1.4       tsai     1195: }
                   1196: 
                   1197: sub start_while {
1.326     albertel 1198:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1199: 
1.160     albertel 1200:     my $result;
1.339     albertel 1201:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1202: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 1203: 	my $code = $token->[2]->{'condition'};
1.4       tsai     1204: 
1.160     albertel 1205: 	push( @Apache::structuretags::whileconds, $code);
                   1206: 	if (!$Apache::lonxml::default_homework_loaded) {
                   1207: 	    &Apache::lonxml::default_homework_load($safeeval);
                   1208: 	}
                   1209: 	my $result = &Apache::run::run($code,$safeeval);
1.326     albertel 1210: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160     albertel 1211: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel 1212: 	push( @Apache::structuretags::whileline, $token->[5]);
                   1213: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel 1214: 	if ( $result ) {
                   1215: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                   1216: 	}
                   1217:     } elsif ($target eq 'edit') {
                   1218: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1219: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel 1220: 					  $token,40);
                   1221: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1222:     } elsif ($target eq 'modified') {
                   1223: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1224: 						     $safeeval,'condition');
                   1225: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel 1226:     }
1.160     albertel 1227:     return $result;
1.4       tsai     1228: }
                   1229: 
                   1230: sub end_while {
1.159     albertel 1231:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1232:     my $result;
                   1233: 
1.339     albertel 1234:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1235: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 1236: 	my $code = pop(@Apache::structuretags::whileconds);
                   1237: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel 1238: 	my $line = pop(@Apache::structuretags::whileline);
                   1239: 	my $return = &Apache::run::run($code,$safeeval);
                   1240: 	my $starttime=time;
                   1241: 	my $error=0;
                   1242: 	while ($return) {
                   1243: 	    if (time-$starttime >
                   1244: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378     albertel 1245: 		$return = 0; $error=1; next;
1.161     albertel 1246: 	    }
                   1247: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
1.380     albertel 1248: 	    if ($target eq 'grade' || $target eq 'answer' ||
                   1249: 		$target eq 'analyze') {
                   1250: 		# grade/answer/analyze should produce no output but if we
                   1251: 		# are redirecting, the redirecter should know what to do
                   1252: 		# with the output
                   1253: 		if (!$Apache::lonxml::redirection) { undef($result); }
                   1254: 	    }
1.161     albertel 1255: 	    $return = &Apache::run::run($code,$safeeval);
                   1256: 	}
                   1257: 	if ($error) {
1.270     albertel 1258: 	    &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 1259: 	}
                   1260:     } elsif ($target eq "edit") {
                   1261: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel 1262:     }
1.160     albertel 1263:     return $result;
1.1       albertel 1264: }
1.6       tsai     1265: 
1.160     albertel 1266: # <randomlist show="1">
1.6       tsai     1267: #  <tag1>..</tag1>
                   1268: #  <tag2>..</tag2>
                   1269: #  <tag3>..</tag3>
1.160     albertel 1270: #  ...
1.6       tsai     1271: # </randomlist>
                   1272: sub start_randomlist {
1.326     albertel 1273:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1274:     my $result;
1.339     albertel 1275:     if ($target eq 'answer' || $target eq 'grade'   || $target eq 'web' ||
                   1276: 	$target eq 'tex'    || $target eq 'analyze' || $target eq 'webgrade') {
1.331     albertel 1277: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305     albertel 1278: 	my $b_parser= HTML::LCParser->new(\$body);
                   1279: 	$b_parser->xml_mode(1);
                   1280: 	$b_parser->marked_sections(1);
1.159     albertel 1281: 	my $b_tok;
                   1282: 	my @randomlist;
                   1283: 	my $list_item;
                   1284: 	while($b_tok = $b_parser->get_token() ) {
                   1285: 	    if($b_tok->[0] eq 'S') { # start tag
                   1286: 		# get content of the tag until matching end tag
                   1287: 		# get all text upto the matching tag
                   1288: 		# and push the content into @randomlist
                   1289: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                   1290: 							   $b_parser);
                   1291: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                   1292: 		push(@randomlist,$list_item);
                   1293: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                   1294:                 #         $list_item</b>";
                   1295: 	    }
                   1296: 	    if($b_tok->[0] eq 'T') { # text
                   1297: 		# what to do with text in between tags?
                   1298: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                   1299: 	    }
                   1300: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                   1301: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                   1302: 	    # }
                   1303: 	}
1.303     albertel 1304: 	if (@randomlist) {
                   1305: 	    my @idx_arr = (0 .. $#randomlist);
                   1306: 	    &Apache::structuretags::shuffle(\@idx_arr);
                   1307: 	    my $bodytext = '';
                   1308: 	    my $show=$#randomlist;
                   1309: 	    my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                   1310: 	    $showarg--;
                   1311: 	    if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
                   1312: 	    for(0 .. $show) {
                   1313: 		$bodytext .= "$randomlist[ $idx_arr[$_] ]";
                   1314: 	    }
                   1315: 	    &Apache::lonxml::newparser($parser,\$bodytext);
1.159     albertel 1316: 	}
                   1317:     } elsif ($target eq 'edit' ) {
                   1318: 	$result .=&Apache::edit::tag_start($target,$token);
                   1319: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                   1320: 					   $token,5);
                   1321: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1322:     } elsif ($target eq 'modified' ) {
                   1323: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1324: 						     $safeeval,'show');
                   1325: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1326:     }
                   1327:     return $result;
1.7       tsai     1328: }
                   1329: 
                   1330: sub shuffle {
                   1331:     my $a=shift;
                   1332:     my $i;
1.303     albertel 1333:     if (ref($a) eq 'ARRAY' && @$a) {
1.251     albertel 1334: 	&Apache::response::pushrandomnumber();
1.159     albertel 1335: 	for($i=@$a;--$i;) {
                   1336: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                   1337: 	    next if $i == $j;
                   1338: 	    @$a[$i,$j] = @$a[$j,$i];
                   1339: 	}
1.251     albertel 1340: 	&Apache::response::poprandomnumber();
1.7       tsai     1341:     }
1.6       tsai     1342: }
                   1343: 
                   1344: sub end_randomlist {
1.159     albertel 1345:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1346:     my $result;
                   1347:     if ($target eq 'edit' ) {
                   1348: 	$result=&Apache::edit::tag_end($target,$token,
                   1349: 				       'End Randomly Parsed Block');
                   1350:     }
                   1351:     return $result;
1.6       tsai     1352: }
                   1353: 
1.283     albertel 1354: sub ordered_show_check {
                   1355:     my $last_part=$Apache::inputtags::partlist[-2];
                   1356:     my $in_order=
                   1357: 	&Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
                   1358:     my $in_order_show=1;
                   1359:     if ($last_part ne '0' && lc($in_order) eq 'yes') {
                   1360: 	$in_order_show=&Apache::response::check_status($last_part);
                   1361:     }
                   1362:     return $in_order_show;
                   1363: }
                   1364: 
1.11      albertel 1365: sub start_part {
1.326     albertel 1366:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321     albertel 1367:     if (!$Apache::lonxml::metamode) {
                   1368: 	&Apache::lonxml::startredirection(); # we'll use redirection to fix up 
                   1369: 	                                     # duedates.
                   1370:     }
1.159     albertel 1371:     my $result='';
                   1372:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.296     albertel 1373:     if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1.159     albertel 1374:     $Apache::inputtags::part=$id;
1.177     albertel 1375:     push(@Apache::inputtags::partlist,$id);
                   1376:     @Apache::inputtags::response=();
1.159     albertel 1377:     @Apache::inputtags::previous=();
                   1378:     @Apache::inputtags::previous_version=();
1.241     albertel 1379:     $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159     albertel 1380:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259     albertel 1381:     my $newtype=&Apache::lonnet::EXT("resource.$id.type");
                   1382:     if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283     albertel 1383:     my $in_order_show=&ordered_show_check();
1.214     albertel 1384:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259     albertel 1385:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209     albertel 1386:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1387: 
                   1388:     if ($target eq 'meta') {
1.224     www      1389: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   1390: 	return &Apache::response::mandatory_part_meta.
                   1391: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 1392:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   1393: 	     $target eq 'answer' || $target eq 'tex') {
1.283     albertel 1394: 	if ($hidden || !$in_order_show) {
1.326     albertel 1395: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159     albertel 1396: 	} else {
                   1397: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   1398: 	    push (@Apache::inputtags::status,$status);
                   1399: 	    my $expression='$external::datestatus="'.$status.'";';
                   1400: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   1401: 	    &Apache::run::run($expression,$safeeval);
1.284     albertel 1402: 	    if ($env{'request.state'} eq 'construct') {
1.241     albertel 1403: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 1404: 	    }
1.216     albertel 1405: 	    if (( $status eq 'CLOSED' ) ||
                   1406: 		( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 1407: 		( $status eq 'NOT_YET_VIEWED') ||
1.216     albertel 1408: 		( $status eq 'BANNED') ||
                   1409: 		( $status eq 'UNAVAILABLE') ||
                   1410: 		( $status eq 'INVALID_ACCESS')) {
1.326     albertel 1411: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
                   1412: 							   $style);
1.159     albertel 1413: 		if ( $target eq "web" ) {
1.211     albertel 1414: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 1415: 		} elsif ( $target eq 'tex' ) {
1.284     albertel 1416: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.211     albertel 1417: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 1418: 		    } else {
1.211     albertel 1419: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 1420: 		    }
1.159     albertel 1421: 		}
                   1422: 	    } else {
                   1423: 		if ($target eq 'tex') {
1.284     albertel 1424: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.264     sakharuk 1425: 			if ($$tagstack[-2] eq 'td') {
                   1426: 			    $result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1427: 			} else {
                   1428: 			    $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1429: 			}
1.195     sakharuk 1430: 		    }
1.159     albertel 1431: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284     albertel 1432: 		    my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222     sakharuk 1433: 		    my @allkeys = split /,/,$allkeys;
                   1434: 		    my $allow_print_points = 0;
                   1435: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 1436: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 1437: 			    if ($1 ne '0') {$allow_print_points=1;}
                   1438: 			}
                   1439: 		    }
1.275     albertel 1440: 		    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   1441: 		    if (defined($maxtries) && $maxtries < 0) {
                   1442: 			$allow_print_points=0;
                   1443: 		    }
1.302     albertel 1444: 		    if (lc($env{'course.'.$env{'request.course.id'}.
                   1445: 				    '.disableexampointprint'}) eq 'yes') {
                   1446: 			$allow_print_points=0;
                   1447: 		    }
1.222     sakharuk 1448: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233     www      1449: 		} elsif ($target eq 'web') {
1.356     www      1450: 		    $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159     albertel 1451: 		}
                   1452: 	    }
                   1453: 	}
                   1454:     } elsif ($target eq 'edit') {
                   1455: 	$result.=&Apache::edit::tag_start($target,$token);
                   1456: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   1457: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      1458: 	    '&nbsp;&nbsp;'.
                   1459: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 1460: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1461:     } elsif ($target eq 'modified') {
                   1462: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 1463: 						     $safeeval,'id','display');
1.159     albertel 1464: 	if ($constructtag) {
1.225     albertel 1465: 	    #limiting ids to only letters numbers, and space
1.224     www      1466: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 1467: 	    $result = &Apache::edit::rebuild_tag($token);
                   1468: 	}
                   1469:     }
                   1470:     return $result;
1.11      albertel 1471: }
                   1472: 
                   1473: sub end_part {
1.159     albertel 1474:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1475:     &Apache::lonxml::debug("in end_part $target ");
                   1476:     my $status=$Apache::inputtags::status['-1'];
                   1477:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283     albertel 1478:     my $in_order_show=&ordered_show_check();
1.321     albertel 1479:     my $result;
                   1480:     if (!$Apache::lonxml::metamode) {
                   1481: 	$result = &Apache::lonxml::endredirection(); # started in &start_part
1.329     albertel 1482: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel 1483:     }
1.312     albertel 1484:     if ($target eq 'grade') {
1.249     albertel 1485: 	if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283     albertel 1486: 	    !$hidden && $in_order_show) {
1.311     foxr     1487: 	    $result.=&Apache::inputtags::grade;
1.249     albertel 1488: 	} else {
                   1489: 	    # move any submission data to .hidden
                   1490: 	    &Apache::inputtags::hidealldata($Apache::inputtags::part);
                   1491: 	}
1.283     albertel 1492:     } elsif (($target eq 'web' || $target eq 'tex') &&
                   1493: 	     !$hidden && $in_order_show) {
1.159     albertel 1494: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   1495: 							$target);
1.212     albertel 1496: 	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
                   1497: 	    $gradestatus='';
                   1498: 	}
1.311     foxr     1499: 	$result.=$gradestatus;
1.265     sakharuk 1500: 	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';} 
1.181     albertel 1501:     } elsif ($target eq 'edit') {
1.311     foxr     1502: 	$result.=&Apache::edit::end_table();
1.322     albertel 1503:     } elsif ($target eq 'modified') {
                   1504: 	 $result .= $token->[2];
1.159     albertel 1505:     }
                   1506:     pop @Apache::inputtags::status;
                   1507:     $Apache::inputtags::part='';
1.295     albertel 1508:     $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159     albertel 1509:     return $result;
1.11      albertel 1510: }
1.1       albertel 1511: 
1.25      albertel 1512: sub start_preduedate {
1.326     albertel 1513:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339     albertel 1514:     if ($target eq 'web' || $target eq 'grade'    || $target eq 'answer' ||
                   1515: 	$target eq 'tex' || $target eq 'webgrade') {
1.236     albertel 1516: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300     albertel 1517: 	if (!$Apache::lonhomework::scantronmode &&
                   1518: 	    $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 1519: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   1520: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326     albertel 1521: 	    &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159     albertel 1522: 	}
1.24      albertel 1523:     }
1.159     albertel 1524:     return '';
1.24      albertel 1525: }
                   1526: 
1.25      albertel 1527: sub end_preduedate {
1.159     albertel 1528:     return '';
1.24      albertel 1529: }
                   1530: 
1.369     foxr     1531: # In all the modes where <postanswerdate> text is 
                   1532: # displayable,  all we do is eat up the text between the start/stop
                   1533: # tags if the conditions are not right to display it.
1.25      albertel 1534: sub start_postanswerdate {
1.326     albertel 1535:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370     foxr     1536:     my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
                   1537: 	&Apache::lonnet::allowed('pav',
                   1538: 			   $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369     foxr     1539:     if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370     foxr     1540: 	$target eq 'tex' ) {
1.300     albertel 1541: 	if ($Apache::lonhomework::scantronmode ||
1.370     foxr     1542: 	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
                   1543: 	    (($target eq 'tex') && !$pav)) {
1.326     albertel 1544: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159     albertel 1545: 	}
                   1546:     }
                   1547:     return '';
1.24      albertel 1548: }
                   1549: 
1.25      albertel 1550: sub end_postanswerdate {
1.159     albertel 1551:     return '';
1.24      albertel 1552: }
                   1553: 
1.25      albertel 1554: sub start_notsolved {
1.326     albertel 1555:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1556:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339     albertel 1557: 	$target eq 'tex' || $target eq 'webgrade') {
1.159     albertel 1558: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   1559: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 1560: 	if ($gradestatus =~ /^correct/ &&
                   1561: 	    &Apache::response::show_answer()) {
1.159     albertel 1562: 	    &Apache::lonxml::debug("skipping");
1.326     albertel 1563: 	    &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159     albertel 1564: 	}
1.24      albertel 1565:     }
1.159     albertel 1566:     return '';
1.24      albertel 1567: }
                   1568: 
1.25      albertel 1569: sub end_notsolved {
1.159     albertel 1570:     return '';
1.24      albertel 1571: }
                   1572: 
                   1573: sub start_solved {
1.326     albertel 1574:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1575:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1576: 	$target eq 'tex') {
                   1577: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 1578: 	if ($gradestatus !~ /^correct/ ||
                   1579: 	    !&Apache::response::show_answer()) {
1.326     albertel 1580: 	    &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159     albertel 1581: 	}
1.24      albertel 1582:     }
1.159     albertel 1583:     return '';
1.24      albertel 1584: }
                   1585: 
                   1586: sub end_solved {
1.248     albertel 1587:     return '';
                   1588: }
                   1589: 
                   1590: sub start_problemtype {
1.326     albertel 1591:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248     albertel 1592:     my $result;
1.339     albertel 1593:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1594: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248     albertel 1595: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
                   1596: 	if (!defined($mode)) { $mode='show'; }
                   1597: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
                   1598: 	my $found=0;
                   1599: 	foreach my $type (split(',',$for)) {
                   1600: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
                   1601: 	}
                   1602: 	if ($mode eq 'show' && !$found) {
1.326     albertel 1603: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 1604: 	}
                   1605: 	if ($mode eq 'hide' && $found) {
1.326     albertel 1606: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 1607: 	}
                   1608:     } elsif ($target eq 'edit') {
                   1609: 	$result .=&Apache::edit::tag_start($target,$token);
                   1610: 	$result.=&Apache::edit::select_arg('Mode:','mode',
                   1611: 					   [['show','Show'],
                   1612: 					    ['hide','Hide']]
                   1613: 					   ,$token);
                   1614: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
                   1615: 					     [ ['exam','Exam/Quiz Problem'],
                   1616: 					       ['survey','Survey'],
                   1617: 					       ['problem','Homework Problem'] ]
                   1618: 					     ,$token);
                   1619: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1620:     } elsif ($target eq 'modified') {
                   1621: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1622: 						     $safeeval,'mode','for');
                   1623: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1624:     }
                   1625:     return $result;
                   1626: }
                   1627: 
                   1628: sub end_problemtype {
1.159     albertel 1629:     return '';
1.24      albertel 1630: }
1.34      albertel 1631: 
                   1632: sub start_startouttext {
1.159     albertel 1633:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1634:     my @result=(''.'');
                   1635:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
                   1636:     return (@result);
1.34      albertel 1637: }
1.159     albertel 1638: 
1.34      albertel 1639: sub end_startouttext {
1.326     albertel 1640:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1641:     my $result='';
                   1642:     my $text='';
                   1643: 
                   1644:     if ($target eq 'edit') {
1.326     albertel 1645: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211     albertel 1646: 	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
                   1647: <td>".&mt('Delete:').
1.159     albertel 1648:                  &Apache::edit::deletelist($target,$token)
                   1649: 		 ."</td>
1.42      albertel 1650: <td>".
1.159     albertel 1651:                  &Apache::edit::insertlist($target,$token).
1.362     albertel 1652: 		 '</td><td align="right" valign="top">' .
                   1653: 		 &Apache::loncommon::helpLatexCheatsheet().
1.159     albertel 1654: 		 &Apache::edit::end_row().
1.362     albertel 1655:                  &Apache::edit::start_spanning_row()."\n".
1.255     www      1656: 		 &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159     albertel 1657:     }
                   1658:     if ($target eq 'modified') {
1.219     albertel 1659: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 1660:     }
                   1661:     if ($target eq 'tex') {
                   1662: 	$result .= '\noindent ';
                   1663:     }
                   1664:     return $result;
1.34      albertel 1665: }
1.159     albertel 1666: 
1.34      albertel 1667: sub start_endouttext {
1.159     albertel 1668:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1669:     my $result='';
                   1670:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   1671:     if ($target eq "modified") {
                   1672: 	$result='<endouttext />'.
1.377     albertel 1673: 	    &Apache::edit::handle_insertafter('startouttext');
                   1674:     }
1.159     albertel 1675:     return $result;
1.34      albertel 1676: }
1.159     albertel 1677: 
1.34      albertel 1678: sub end_endouttext {
1.159     albertel 1679:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1680:     my @result=('','');
                   1681:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   1682:     return (@result);
1.34      albertel 1683: }
1.159     albertel 1684: 
1.45      albertel 1685: sub delete_startouttext {
1.326     albertel 1686:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   1687:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159     albertel 1688:     my $text=$$parser['-1']->get_text("/endouttext");
                   1689:     my $ntoken=$$parser['-1']->get_token();
                   1690:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   1691:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   1692:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   1693:     # they did the last time round
                   1694:     &Apache::lonxml::increasedepth($ntoken);
                   1695:     &Apache::lonxml::decreasedepth($ntoken);
                   1696:     return 1;
1.193     www      1697: }
                   1698: 
                   1699: sub start_simpleeditbutton {
                   1700:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1701:     my $result='';
1.284     albertel 1702:     if (($env{'form.simple_edit_button'} ne 'off') &&
1.273     albertel 1703: 	($target eq 'web') &&
1.330     albertel 1704:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284     albertel 1705:         my $url=$env{'request.noversionuri'};
1.193     www      1706:         $url=~s/\?.*$//;
1.367     albertel 1707: 	my ($symb) = &Apache::lonnet::whichuser();
1.194     www      1708: 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356     www      1709:                 '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1.196     www      1710: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193     www      1711:     }
                   1712:     return $result;
                   1713: }
                   1714: 
                   1715: sub end_simpleeditbutton {
                   1716:     return '';
1.45      albertel 1717: }
1.34      albertel 1718: 
1.1       albertel 1719: 1;
                   1720: __END__

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