Annotation of loncom/homework/structuretags.pm, revision 1.394

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.394   ! www         4: # $Id: structuretags.pm,v 1.393 2007/09/10 13:39:16 www 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: 	$extra_head .= &Apache::londefdef::generate_css_links();
                    127: 
1.384     albertel  128: 	if ($env{'request.state'} eq 'construct') {
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: 	$body_args{'add_entries'}    = \%add_entries;	
1.391     albertel  160: 	if ($env{'environment.remote'} eq 'off'
                    161: 	    && $env{'request.state'} eq   'construct') {
                    162: 	    $body_args{'only_body'}  = 1;
                    163: 	}
1.344     albertel  164:     }
1.365     albertel  165:     $body_args{'no_auto_mt_title'} = 1;
1.344     albertel  166:     my $page_start = &Apache::loncommon::start_page($name,$extra_head,
                    167: 						    \%body_args);
                    168: 
                    169:     if (!defined($found{'body'}) 
                    170: 	&& $env{'request.state'} ne 'construct'
                    171: 	&& ($target eq 'web' || $target eq 'webgrade')) {
                    172: 
1.367     albertel  173: 	my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344     albertel  174: 	if ($symb eq '' && !$publicuser) {
                    175: 	    my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
                    176: 	    $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
                    177: 	    $page_start .= $help;
1.159     albertel  178: 	}
1.344     albertel  179:     }
                    180: 
                    181:     if (!defined($found{'body'})) {
1.343     albertel  182: 	$page_start .= &Apache::lonxml::message_location();
1.159     albertel  183:     }
1.344     albertel  184:     
1.159     albertel  185:     my $form_tag_start;
                    186:     if (!defined($found{'form'})) {
1.337     albertel  187: 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338     albertel  188: 	my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327     albertel  189: 	$form_tag_start.=$uri.'" ';
                    190: 	if ($target eq 'edit') {
                    191: 	    $form_tag_start.=&Apache::edit::form_change_detection();
                    192: 	}
1.368     albertel  193: 	$form_tag_start.='>'."\n";
1.355     albertel  194: 
                    195: 	my $symb=&Apache::lonnet::symbread();
                    196: 	if ($symb =~ /\S/) {
                    197: 	    $symb=
                    198: 		&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
                    199: 	    $form_tag_start.=
1.368     albertel  200: 		"\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355     albertel  201: 	}
1.159     albertel  202:     }
1.343     albertel  203:     return ($page_start,$form_tag_start);
1.105     albertel  204: }
                    205: 
1.141     matthew   206: #use Time::HiRes();
1.105     albertel  207: sub get_resource_name {
1.159     albertel  208:     my ($parstack,$safeeval)=@_;
1.388     foxr      209:     my $name;
1.204     albertel  210:     if (defined($Apache::lonhomework::name)) {
1.388     foxr      211: 	$name = $Apache::lonhomework::name;
                    212:     } else {
                    213: 	my ($symb)=&Apache::lonnet::whichuser();
1.392     albertel  214: 	$name=&Apache::lonnet::gettitle($symb);
1.388     foxr      215: 	if ($name eq '') {
                    216: 	    $name=&Apache::lonnet::EXT('resource.title');
                    217: 	    if ($name eq 'con_lost') { $name = ''; }
                    218: 	}
                    219: 	if ($name!~/\S+/) {
                    220: 	    $name=$env{'request.uri'};
                    221: 	    $name=~s-.*/([^/]+)$-$1-;
                    222: 	}
                    223: 	# The name has had html tags escaped:
                    224:        
                    225: 	$name=~s/&lt;/</gs;
                    226: 	$name=~s/&gt;/>/gs;
                    227: 
                    228: 	$Apache::lonhomework::name=$name;
1.204     albertel  229:     }
1.159     albertel  230:     return $name;
1.105     albertel  231: }
                    232: 
                    233: sub setup_rndseed {
1.159     albertel  234:     my ($safeeval)=@_;
                    235:     my $rndseed;
1.367     albertel  236:     my ($symb)=&Apache::lonnet::whichuser();
1.333     albertel  237:     if ($env{'request.state'} eq "construct" 
                    238: 	|| $symb eq '' 
                    239: 	|| $Apache::lonhomework::type eq 'practice'
                    240: 	|| $Apache::lonhomework::history{'resource.CODE'}) {
1.316     www       241: 	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317     albertel  242: 						['rndseed']);
1.284     albertel  243: 	$rndseed=$env{'form.rndseed'};
1.159     albertel  244: 	if (!$rndseed) {
1.162     albertel  245: 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
                    246: 	    if (!$rndseed) {
                    247: 		$rndseed=time;
                    248: 	    }
1.284     albertel  249: 	    $env{'form.rndseed'}=$rndseed;
1.162     albertel  250: 	}
1.374     albertel  251: 	if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    252: 	      && $env{'form.submitted'} eq 'yes')  ||
1.284     albertel  253: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190     albertel  254: 	    srand(time);
                    255: 	    $rndseed=int(rand(2100000000));
1.284     albertel  256: 	    $env{'form.rndseed'}=$rndseed;
                    257: 	    delete($env{'form.resetdata'});
                    258: 	    delete($env{'form.newrandomization'});
1.159     albertel  259: 	}
1.187     albertel  260: 	if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307     albertel  261: 	    $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187     albertel  262:         }
1.247     albertel  263:         if ($Apache::lonhomework::history{'resource.CODE'}) {
                    264: 	   $rndseed=&Apache::lonnet::rndseed();
                    265: 	}
1.221     albertel  266: 	if ($safeeval) {
                    267: 	    &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250     albertel  268: 	    &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221     albertel  269: 	}
1.159     albertel  270:     }
                    271:     return $rndseed;
1.105     albertel  272: }
                    273: 
1.268     albertel  274: sub remember_problem_state {
                    275:     return '
1.284     albertel  276:        <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
                    277:        <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
                    278:        <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268     albertel  279: }
                    280: 
1.105     albertel  281: sub problem_edit_header {
1.268     albertel  282:     return '<input type="hidden" name="submitted" value="edit" />'.
                    283: 	&Apache::structuretags::remember_problem_state().'
1.210     albertel  284:        <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243     matthew   285:        <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328     albertel  286:        <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243     matthew   287:        <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
                    288:        <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
                    289:        <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.359     albertel  290:        &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.260     albertel  291:        .'</td></tr></table>'.
1.282     albertel  292:        '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105     albertel  293: }
                    294: 
                    295: sub problem_edit_footer {
1.210     albertel  296:     return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255     www       297:     <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348     albertel  298:     &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342     albertel  299:     "\n</form>\n".&Apache::loncommon::end_page();
1.105     albertel  300: }
                    301: 
1.235     albertel  302: sub option {
                    303:     my ($value,$name) = @_;
                    304:     my $result ="<option value='".$value."' ";
1.284     albertel  305:     if ($env{'form.'.$name} eq $value) {
1.235     albertel  306: 	$result.=" selected='on' ";
                    307:     }
                    308:     $result.='>';
                    309:     return $result;
                    310: }
                    311: 
1.105     albertel  312: sub problem_web_to_edit_header {
1.159     albertel  313:     my ($rndseed)=@_;
1.313     albertel  314:     my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373     albertel  315:     $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.313     albertel  316:     $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243     matthew   317:              <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
                    318:              <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210     albertel  319:              <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270     albertel  320:               <input type="text" name="rndseed" size="10" value="'.
1.175     albertel  321: 	       $rndseed.'"
1.270     albertel  322:            onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.384     albertel  323:              <span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
1.315     albertel  324:     my $show_all_foils_text = 
                    325: 	($Apache::lonhomework::parsing_a_task) ?
                    326: 	&mt('&nbsp;Show&nbsp;All&nbsp;Instances')
                    327: 	: &mt('&nbsp;Show&nbsp;All&nbsp;Foils');
                    328: 
1.284     albertel  329:     if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.384     albertel  330:     $result.= ' />'.$show_all_foils_text.'</label></span>'.
1.228     www       331: 	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.371     albertel  332: 	'<hr />';
1.386     albertel  333:     $result.=&mt('Apply style file: ').'
1.384     albertel  334: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
                    335:  <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
                    336: <input type="submit" name="clear_style_file" value="'.&mt('Clear').'" />
                    337: <br />';
                    338: 
1.313     albertel  339:     if (!$Apache::lonhomework::parsing_a_task) {
                    340: 	$result.="
1.235     albertel  341: <nobr>
                    342: Problem Status:
                    343: <select name='problemstate'>
1.270     albertel  344:   <option value=''></option>
1.235     albertel  345:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    346:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    347:   ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
                    348:   ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
                    349:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
                    350: </select>
                    351: </nobr>
                    352: <nobr>
                    353: Problem Type:
                    354: <select name='problemtype'>
1.270     albertel  355:   <option value=''></option>
1.242     albertel  356:   ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
                    357:   ".&option('problem','problemtype').&mt("Homework problem")."</option>
                    358:   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235     albertel  359: </select>
                    360: </nobr>
                    361: <nobr>
                    362: Feedback Mode:
                    363: <select name='problemstatus'>
                    364:   <option value=''></option>
1.242     albertel  365:   ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
                    366:   ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235     albertel  367: </select>
                    368: </nobr>
1.242     albertel  369: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235     albertel  370: <hr />";
1.313     albertel  371: 	my $numtoanalyze=$env{'form.numtoanalyze'};
                    372: 	if (!$numtoanalyze) { $numtoanalyze=20; }
                    373: 	$result.= '<input type="submit" name="problemmode" value='.
                    374: 	    &mt('"Calculate answers').'" /> for
1.136     albertel  375:              <input type="text" name="numtoanalyze" value="'.
1.210     albertel  376: 	     $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
                    377: 	     '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176     albertel  378: 						     '',undef,undef,300).
1.210     albertel  379: 						     '<hr />';
1.376     albertel  380:     } elsif ($Apache::lonhomework::parsing_a_task) {
                    381: 	$result.="
                    382: <nobr>
                    383: Problem Status:
                    384: <select name='problemstate'>
                    385:   <option value=''></option>
                    386:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    387:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    388:   ".&option('WEB_GRADE'            ,'problemstate').&mt("Criteria Grading")."</option>
                    389:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Feedback")."</option>
                    390: </select>
                    391: </nobr>
                    392: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
                    393: <hr />";
1.313     albertel  394:     }
1.159     albertel  395:     return $result;
1.48      albertel  396: }
                    397: 
1.65      albertel  398: sub initialize_storage {
1.357     albertel  399:     my ($given_symb) = @_;
1.353     albertel  400:     undef(%Apache::lonhomework::results);
                    401:     undef(%Apache::lonhomework::history);
1.357     albertel  402:     my ($symb,$courseid,$domain,$name) = 
1.367     albertel  403: 	&Apache::lonnet::whichuser($given_symb);
1.353     albertel  404:     
                    405:     # anonymous users (CODEd exams) have no data
                    406:     if ($name eq 'anonymous' 
                    407: 	&& !defined($domain)) {
                    408: 	return;
                    409:     }
                    410: 
1.333     albertel  411:     if ($env{'request.state'} eq 'construct' 
                    412: 	|| $symb eq ''
                    413: 	|| $Apache::lonhomework::type eq 'practice') {
                    414: 	
                    415: 	my $namespace = $symb || $env{'request.uri'};
                    416: 	if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374     albertel  417: 	    ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    418: 	     && $env{'form.submitted'} eq 'yes') ||
1.333     albertel  419: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
                    420: 	    &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
                    421: 	    &Apache::lonxml::debug("Attempt reset");
                    422: 	}
1.159     albertel  423: 	%Apache::lonhomework::history=
1.333     albertel  424: 	    &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159     albertel  425: 	my ($temp)=keys %Apache::lonhomework::history ;
                    426: 	&Apache::lonxml::debug("Return message of $temp");
                    427:     } else {
                    428: 	%Apache::lonhomework::history=
                    429: 	    &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                    430:     }
1.353     albertel  431: 
1.159     albertel  432:     #ignore error conditions
1.67      albertel  433:     my ($temp)=keys %Apache::lonhomework::history ;
1.159     albertel  434:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65      albertel  435: }
                    436: 
                    437: # -------------------------------------------------------------finalize_storage
                    438: # Stores away the result has to a student's environment
                    439: # checks form.grade_ for specific values, other wises stores
                    440: # to the running users environment
1.285     raeburn   441: # Will increment totals for attempts, students, and corrects
                    442: # if running user has student role.  
1.65      albertel  443: sub finalize_storage {
1.357     albertel  444:     my ($given_symb) = @_;
1.159     albertel  445:     my $result;
1.289     albertel  446:     if (%Apache::lonhomework::results) {
1.323     albertel  447: 	my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
                    448: 	delete(@Apache::lonhomework::results{@remove});
1.357     albertel  449: 	my ($symb,$courseid,$domain,$name) = 
1.367     albertel  450: 	    &Apache::lonnet::whichuser($given_symb);
1.333     albertel  451: 	if ($env{'request.state'} eq 'construct' 
                    452: 	    || $symb eq ''
                    453: 	    || $Apache::lonhomework::type eq 'practice') {
                    454: 	    my $namespace = $symb || $env{'request.uri'};
1.284     albertel  455: 	    $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159     albertel  456: 	    $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333     albertel  457: 					      $namespace,'',$domain,$name);
1.159     albertel  458: 	    &Apache::lonxml::debug('Construct Store return message:'.$result);
                    459: 	} else {
                    460: 	    $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
                    461: 					    $symb,$courseid,$domain,$name);
                    462: 	    &Apache::lonxml::debug('Store return message:'.$result);
1.285     raeburn   463:             if ($env{'request.role'} =~/^st/) {
                    464:                 &store_aggregates($symb,$courseid);
                    465:             }
1.159     albertel  466: 	}
1.323     albertel  467:     } else {
                    468: 	&Apache::lonxml::debug('Nothing to store');
1.67      albertel  469:     }
1.159     albertel  470:     return $result;
1.65      albertel  471: }
                    472: 
1.285     raeburn   473: # -------------------------------------------------------------store_aggregates
                    474: # Sends hash of values to be incremented in nohist_resourcetracker.db
                    475: # for the course. Increments total number of attempts, unique students 
                    476: # and corrects for each part for an instance of a problem, as appropriate.
                    477: sub store_aggregates {
                    478:     my ($symb,$courseid) = @_;
1.286     albertel  479:     my %aggregate;
                    480:     my @parts;
1.288     albertel  481:     my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
                    482:     my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286     albertel  483:     foreach my $key (keys(%Apache::lonhomework::results)) {
1.287     albertel  484:         if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286     albertel  485:             push(@parts, $1);
1.285     raeburn   486:         }
                    487:     }
1.286     albertel  488:     foreach my $part (@parts) {
                    489:         if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
                    490: 	    eq 'APPROX_ANS' ||
                    491: 	    $Apache::lonhomework::results{'resource.'.$part.'.award'}
                    492: 	    eq 'EXACT_ANS') {
1.287     albertel  493:             $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285     raeburn   494:         }
1.286     albertel  495:         if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287     albertel  496:             $aggregate{$symb."\0".$part."\0users"} = 1;
1.292     raeburn   497:         } else {
1.293     albertel  498:             my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]); 
1.292     raeburn   499:             if ($last_reset) {
1.293     albertel  500:                 if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292     raeburn   501:                     $aggregate{$symb."\0".$part."\0users"} = 1;
                    502:                 }
                    503:             }
1.285     raeburn   504:         }
1.287     albertel  505:         $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285     raeburn   506:     }
1.292     raeburn   507:     if (keys (%aggregate) > 0) {
1.289     albertel  508: 	&Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292     raeburn   509:                             $cdomain,$cname);
                    510:     }
                    511: }
1.289     albertel  512: 
1.65      albertel  513: sub checkout_msg {
1.211     albertel  514:     my %lt=&Apache::lonlocal::texthash( 
                    515: 		'resource'=>'The resource needs to be checked out',
                    516: 		'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.',
                    517:                 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
                    518:                 'checkout'=>'Check out Exam for Viewing',
                    519: 		'checkout?'=>'Check out Exam?');
1.352     albertel  520:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159     albertel  521:     return (<<ENDCHECKOUT);
1.211     albertel  522: <h2>$lt{'resource'}</h2>
                    523:     <p>$lt{'id_expln'}</p>
                    524: <font color="red">
                    525: <p>$lt{'warning'}</p>
1.91      albertel  526: </font>
1.352     albertel  527: <form name="checkout" method="POST" action="$uri">
1.91      albertel  528: <input type="hidden" name="doescheckout" value="yes" />
1.211     albertel  529: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel  530: </form>
                    531: ENDCHECKOUT
                    532: }
                    533: 
1.252     albertel  534: sub firstaccess_msg {
1.253     albertel  535:     my ($time,$symb)=@_;
                    536:     my ($map)=&Apache::lonnet::decode_symb($symb);
                    537:     my $foldertitle=&Apache::lonnet::gettitle($map);
                    538:     &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352     albertel  539:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252     albertel  540:     return (<<ENDCHECKOUT);
1.253     albertel  541: <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  542: <form name="markaccess" method="POST" action="$uri">
1.252     albertel  543: <input type="hidden" name="markaccess" value="yes" />
                    544: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
                    545: </form>
                    546: ENDCHECKOUT
                    547: }
                    548: 
1.204     albertel  549: sub init_problem_globals {
                    550:     my ($type)=@_;
                    551:     #initialize globals
1.308     foxr      552:     #   For problems, we start out in part 0 (outside a <part> tag).
                    553:     #   and part 0 is used to describe the main body of the <problem>
                    554:     #
1.204     albertel  555:     if ($type eq 'problem') {
                    556: 	$Apache::inputtags::part='0';
                    557: 	@Apache::inputtags::partlist=('0');
1.266     albertel  558: 	$Apache::lonhomework::problemstatus=&get_problem_status('0');
                    559: 	$Apache::lonhomework::ignore_response_errors=0;
1.308     foxr      560: 
1.266     albertel  561:     } elsif ($type eq 'library') {
1.204     albertel  562: 	$Apache::inputtags::part='';
                    563: 	@Apache::inputtags::partlist=();
                    564: 	$Apache::lonhomework::problemstatus='';	
1.266     albertel  565: 	$Apache::lonhomework::ignore_response_errors=1;
1.308     foxr      566: 
1.304     albertel  567:     } elsif ($type eq 'Task') {
                    568: 	$Apache::inputtags::part='0';
                    569: 	@Apache::inputtags::partlist=('0');
                    570: 	$Apache::lonhomework::problemstatus='';	
                    571: 	$Apache::lonhomework::ignore_response_errors=1;
1.204     albertel  572:     }
                    573:     @Apache::inputtags::responselist = ();
                    574:     @Apache::inputtags::importlist = ();
                    575:     @Apache::inputtags::previous=();
                    576:     @Apache::inputtags::previous_version=();
                    577:     $Apache::structuretags::printanswer='No';
                    578:     @Apache::structuretags::whileconds=();
                    579:     @Apache::structuretags::whilebody=();
                    580:     @Apache::structuretags::whileline=();
                    581:     $Apache::lonhomework::scantronmode=0;
                    582:     undef($Apache::lonhomework::name);
1.358     albertel  583:     undef($Apache::lonhomework::default_type);
                    584:     undef($Apache::lonhomework::type);
1.204     albertel  585: }
                    586: 
                    587: sub reset_problem_globals {
                    588:     my ($type)=@_;
                    589:     undef(%Apache::lonhomework::history);
                    590:     undef(%Apache::lonhomework::results);
                    591:     undef($Apache::inputtags::part);
1.208     albertel  592: #don't undef this, lonhomework.pm takes care of this, we use this to 
                    593: #detect if we try to do 2 problems in one file
                    594: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel  595:     undef($Apache::lonhomework::name);
1.358     albertel  596:     undef($Apache::lonhomework::default_type);
                    597:     undef($Apache::lonhomework::type);
                    598:     undef($Apache::lonhomework::scantronmode);
                    599:     undef($Apache::lonhomework::problemstatus);
                    600:     undef($Apache::lonhomework::ignore_response_errors);
1.204     albertel  601: }
                    602: 
1.241     albertel  603: sub set_problem_state {
1.240     albertel  604:     my ($part)=@_;
1.284     albertel  605:     if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240     albertel  606: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                    607: 	    'correct_by_student';
                    608:     }
                    609: }
                    610: 
1.241     albertel  611: sub get_problem_status {
                    612:     my ($part)=@_;
1.267     albertel  613:     my $problem_status;
1.284     albertel  614:     if ($env{'request.state'} eq 'construct' &&
                    615: 	defined($env{'form.problemstatus'})) {
                    616: 	$problem_status=$env{'form.problemstatus'};
1.267     albertel  617:     } else {
                    618: 	$problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                    619: 	&Apache::lonxml::debug("problem status for $part is $problem_status");
1.284     albertel  620: 	&Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241     albertel  621:     }
                    622:     return $problem_status;
                    623: }
                    624: 
1.9       albertel  625: sub start_problem {
1.326     albertel  626:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19      albertel  627: 
1.311     foxr      628:     # We'll use the redirection to fix up printing of duedates.
1.321     albertel  629:     if (!$Apache::lonxml::metamode) {
                    630: 	&Apache::lonxml::startredirection();
                    631:     }
1.311     foxr      632: 
1.308     foxr      633:     # Problems don't nest and we don't allow more than one <problem> in
                    634:     # a .problem file.
                    635:     #
1.184     albertel  636:     if ( $Apache::inputtags::part ne '' ||
                    637: 	 $Apache::lonhomework::parsing_a_problem) {
                    638: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
1.326     albertel  639: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159     albertel  640: 	return '';
                    641:     }
1.184     albertel  642: 
                    643:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel  644:     &init_problem_globals('problem');
1.166     albertel  645: 
1.284     albertel  646:     if (defined($env{'scantron.maxquest'})) {
1.166     albertel  647: 	$Apache::lonhomework::scantronmode=1;
                    648:     }
1.161     albertel  649: 
1.159     albertel  650:     if ($target ne 'analyze') {
                    651: 	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284     albertel  652: 	if (($env{'request.state'} eq 'construct') &&
                    653: 	    defined($env{'form.problemtype'})) {
                    654: 	    $Apache::lonhomework::type=$env{'form.problemtype'};
1.237     albertel  655: 	}
1.332     albertel  656: 	&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159     albertel  657:     }
1.164     albertel  658:     if ($Apache::lonhomework::type eq '' ) {
1.284     albertel  659: 	my $uri=$env{'request.uri'};
1.159     albertel  660: 	if ($uri=~/\.(\w+)$/) {
                    661: 	    $Apache::lonhomework::type=$1;
                    662: 	    &Apache::lonxml::debug("Using type of $1");
                    663: 	} else {
                    664: 	    $Apache::lonhomework::type='problem';
                    665: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                    666: 	}
1.87      albertel  667:     }
1.301     albertel  668:     $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58      www       669: 
1.363     albertel  670:     &initialize_storage();
1.389     albertel  671:     if ($target ne 'analyze'
                    672:        	&& $env{'request.state'} eq 'construct') {
                    673: 	&set_problem_state('0');
                    674:     }
                    675: 
1.366     albertel  676:     if ($target eq 'web') {
                    677: 	&Apache::lonxml::debug(" grading history ");
                    678: 	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
                    679:     }
1.363     albertel  680: 
1.159     albertel  681:     #added vars to the scripting enviroment
1.213     albertel  682:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248     albertel  683:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel  684:     &Apache::run::run($expression,$safeeval);
1.159     albertel  685:     my $status;
                    686:     my $accessmsg;
                    687: 
1.343     albertel  688:     my $name= &get_resource_name($parstack,$safeeval);
1.350     albertel  689:     my ($result,$form_tag_start);
1.354     albertel  690:     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
                    691: 	|| $target eq 'edit') {
1.350     albertel  692: 	($result,$form_tag_start) =
                    693: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                    694: 			$name);
                    695:     }
                    696: 
1.284     albertel  697:     if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159     albertel  698: 
                    699:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
                    700:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    701: 	$target eq 'tex') {
                    702: 	#handle exam checkout
                    703: 	if ($Apache::lonhomework::type eq 'exam') {
                    704: 	    my $token=
                    705: 		$Apache::lonhomework::history{"resource.0.outtoken"};
1.284     albertel  706: 	    if (($env{'form.doescheckout'}) && (!$token)) {
1.159     albertel  707: 		$token=&Apache::lonxml::maketoken();
                    708: 		$Apache::lonhomework::history{"resource.0.outtoken"}=
                    709: 		    $token;
                    710: 	    }
1.343     albertel  711: 	    $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142     albertel  712: 	}
1.284     albertel  713: 	if ($env{'form.markaccess'}) {
1.252     albertel  714: 	    &Apache::lonnet::set_first_access('map');
                    715: 	}
1.159     albertel  716: 	#handle rand seed in construction space
                    717: 	my $rndseed=&setup_rndseed($safeeval);
1.367     albertel  718: 	my ($symb)=&Apache::lonnet::whichuser();
1.333     albertel  719: 	if ($env{'request.state'} ne "construct" && 
                    720: 	    ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162     albertel  721: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
                    722: 		$rndseed.'" />'.
                    723: 		    '<input type="submit" name="resetdata"
1.334     albertel  724:                              value="'.&mt('New Problem Variation').'" />';
                    725: 	    if (exists($env{'form.username'})) {
                    726: 		$form_tag_start.=
1.164     albertel  727: 		    '<input type="hidden" name="username"
1.284     albertel  728:                              value="'.$env{'form.username'}.'" />';
1.334     albertel  729: 	    }
1.333     albertel  730: 	    if ($env{'request.role.adv'}) {
1.267     albertel  731: 		$form_tag_start.=
1.300     albertel  732: 		    ' <label><input type="checkbox" name="showallfoils" ';
1.284     albertel  733: 		if (defined($env{'form.showallfoils'})) {
1.267     albertel  734: 		    $form_tag_start.='checked="on"';
                    735: 		}
1.300     albertel  736: 		$form_tag_start.= ' />'.&mt('&nbsp;Show&nbsp;All&nbsp;Foils').
                    737: 		    '</label>';
1.267     albertel  738: 	    }
                    739: 	    $form_tag_start.='<hr />';
1.162     albertel  740: 	}
1.324     albertel  741: 
                    742: 	($status,$accessmsg,my $slot_name,my $slot) = 
                    743: 	    &Apache::lonhomework::check_slot_access('0','problem');
1.159     albertel  744: 	push (@Apache::inputtags::status,$status);
1.324     albertel  745: 
1.159     albertel  746: 	my $expression='$external::datestatus="'.$status.'";';
                    747: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                    748: 	&Apache::run::run($expression,$safeeval);
                    749: 	&Apache::lonxml::debug("Got $status");
1.324     albertel  750: 
1.159     albertel  751: 	if (( $status eq 'CLOSED' ) ||
                    752: 	    ( $status eq 'UNCHECKEDOUT') ||
1.252     albertel  753: 	    ( $status eq 'NOT_YET_VIEWED') ||
1.159     albertel  754: 	    ( $status eq 'BANNED') ||
1.216     albertel  755: 	    ( $status eq 'UNAVAILABLE') ||
1.324     albertel  756: 	    ( $status eq 'NOT_IN_A_SLOT') ||
1.216     albertel  757: 	    ( $status eq 'INVALID_ACCESS')) {
1.326     albertel  758: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                    759: 						       $style);
1.159     albertel  760: 	    if ( $target eq "web" ) {
1.343     albertel  761: 		my $msg;
1.159     albertel  762: 		if ($status eq 'UNAVAILABLE') {
1.245     albertel  763: 		    $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253     albertel  764: 		} elsif ($status ne 'NOT_YET_VIEWED') {
1.245     albertel  765: 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159     albertel  766: 		}
1.216     albertel  767: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393     www       768: 		    $msg.=&mt('The problem ').$accessmsg;
1.159     albertel  769: 		} elsif ($status eq 'UNCHECKEDOUT') {
1.343     albertel  770: 		    $msg.=&checkout_msg();
1.252     albertel  771: 		} elsif ($status eq 'NOT_YET_VIEWED') {
1.253     albertel  772: 		    $msg.=&firstaccess_msg($accessmsg,$symb);
1.325     albertel  773: 		} elsif ($status eq 'NOT_IN_A_SLOT') {
                    774: 		    $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159     albertel  775: 		}
                    776: 		$result.=$msg.'<br />';
                    777: 	    } elsif ($target eq 'tex') {
1.332     albertel  778: 		my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
                    779: 		                    : '\begin{minipage}{\textwidth}';
                    780: 		$result.='\begin{document}\noindent \vskip 1 mm '.
                    781: 		    $startminipage.'\vskip 0 mm';
1.159     albertel  782: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel  783: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel  784: 		} else {
1.211     albertel  785: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel  786: 		}
                    787: 	    }
1.324     albertel  788: 	} elsif ($status eq 'NEEDS_CHECKIN') {
1.326     albertel  789: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                    790: 						       $style);
1.324     albertel  791: 	    if ($target eq 'web') {
1.375     albertel  792: 		$result .= 
                    793: 		    &Apache::bridgetask::proctor_validation_screen($slot);
1.324     albertel  794: 	    } elsif ($target eq 'grade') {
                    795: 		&Apache::bridgetask::proctor_check_auth($slot_name,$slot,
                    796: 							'problem');
                    797: 	    }
1.159     albertel  798: 	} elsif ($target eq 'web') {
1.360     albertel  799: 	    if ($status eq 'CAN_ANSWER' 
                    800: 		&& $slot_name ne ''
                    801: 		&& $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
                    802: 		# unproctored slot access, self checkin
                    803: 		&Apache::bridgetask::check_in('problem',undef,undef,
                    804: 					      $slot_name);
                    805: 	    }
1.368     albertel  806: 	    $result.="\n $form_tag_start \t".	
1.227     albertel  807: 	      '<input type="hidden" name="submitted" value="yes" />';
                    808: 	    # create a page header and exit
1.284     albertel  809: 	    if ($env{'request.state'} eq "construct") {
                    810: 		$result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227     albertel  811: 	    }
                    812: 	    # if we are viewing someone else preserve that info
1.284     albertel  813: 	    if (defined $env{'form.grade_symb'}) {
1.227     albertel  814: 		foreach my $field ('symb','courseid','domain','username') {
                    815: 		    $result .= '<input type="hidden" name="grade_'.$field.
1.284     albertel  816: 			'" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159     albertel  817: 		}
                    818: 	    }
                    819: 	} elsif ($target eq 'tex') {
1.319     foxr      820: 	    $result .= 'INSERTTEXFRONTMATTERHERE';
                    821: 
1.99      sakharuk  822: 	}
1.159     albertel  823:     } elsif ($target eq 'edit') {
1.343     albertel  824: 	$result .= $form_tag_start.&problem_edit_header();
1.226     albertel  825: 	$Apache::lonxml::warnings_error_header=
                    826: 	    &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  827: 	my $temp=&Apache::edit::insertlist($target,$token);
                    828: 	$result.=$temp;
                    829:     } elsif ($target eq 'modified') {
                    830: 	$result=$token->[4];
                    831:     } else {
                    832: 	# page_start returned a starting result, delete it if we don't need it
                    833: 	$result = '';
1.99      sakharuk  834:     }
1.159     albertel  835:     return $result;
1.9       albertel  836: }
                    837: 
                    838: sub end_problem {
1.159     albertel  839:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321     albertel  840:     my $result;
1.310     foxr      841: 
1.321     albertel  842:     if (!$Apache::lonxml::metamode) {
                    843: 	$result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329     albertel  844: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel  845:     }
1.319     foxr      846: 
                    847:     if ($target eq 'tex') {
1.321     albertel  848: 	# Figure out the front matter and replace the
                    849: 	# INSERTTEXFRONTMATTERHERE in result with it.  note that we do
                    850: 	# this in end_problem because whether or not we display due
                    851: 	# dates depends on whether due dates have already been
                    852: 	# displayed in the problem parts.
                    853: 
1.319     foxr      854: 	my $frontmatter   = '';
                    855: 	my $startminipage = '';
                    856: 	if (not $env{'form.problem_split'}=~/yes/) {
                    857: 	    $startminipage = '\begin{minipage}{\textwidth}';
                    858: 	}
                    859: 	my $id = $Apache::inputtags::part;
                    860: 	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
                    861: 	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
                    862: 	my @packages = split /,/,$packages;
                    863: 	my $allow_print_points = 0;
                    864: 	foreach my $partial_key (@packages) {
                    865: 	    if ($partial_key=~m/^part_0$/) {
                    866: 		$allow_print_points=1;
                    867: 	    }
                    868: 	}
                    869: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                    870: 	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
                    871: 	if (lc($env{'course.'.$env{'request.course.id'}.
                    872: 			'.disableexampointprint'}) eq 'yes') {
                    873: 	    $allow_print_points=0;
                    874: 	}
                    875: 	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
                    876: 	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 ';
                    877: 	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
                    878: 	    '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
                    879: 	
                    880: 	#  Figure out what the due date is and if we need to print
                    881: 	#  it in the problem header.  We have been logging the
                    882: 	#  last due date written to file. 
                    883: 	
                    884: 	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate"); 
                    885: 	my $duedate = POSIX::strftime("%c",localtime($duetime));
                    886: 	my $temp_file;
                    887: 	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
                    888: 	
                    889: 	# Figure out what the last printed due date is or set it
                    890: 	# to the epoch if no duedates have been printed.
                    891: 	
                    892: 	my $due_file_content = 0;      #   If the file does not yet exist, time is the epoch.
                    893: 	if (-e $filename) {
                    894: 	    $temp_file = Apache::File->new($filename);
                    895: 	    my @due_file      = <$temp_file>;
                    896: 	    $due_file_content = $due_file[$#due_file];
                    897: 	    chomp $due_file_content;
                    898: 	} 
                    899: 	
                    900: 	# We display the due date iff it is not the same as the last
                    901: 	# duedate in problem header ($due_file_content), and
                    902: 	# none of our parts displayed a duedate.
                    903: 	#
                    904: 	my $parts_with_displayduedate;
                    905: 	if (defined $Apache::outputtags::showonce{'displayduedate'}) {
                    906: 	    $parts_with_displayduedate = 
                    907: 		scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
                    908: 	} else {
                    909: 	    $parts_with_displayduedate = 0;
                    910: 	}
                    911: 	if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
                    912: 	    $temp_file = Apache::File->new('>'.$filename);
                    913: 	    print $temp_file "$duetime\n";
                    914: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    915: 		if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
                    916: 		    $frontmatter .= $begin_doc.
                    917: 			'\textit{Due date: '.$duedate.'} '.$toc_line;
                    918: 		} else {
                    919: 		    $frontmatter.= $begin_doc.$toc_line;
                    920: 		    if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    921: 		}
                    922: 	    } else {
1.381     albertel  923: 		$frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319     foxr      924: 	    }
                    925: 	} else {
                    926: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                    927: 		$frontmatter .= $begin_doc.$toc_line;
                    928: 		if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
                    929: 	    } else {
1.381     albertel  930: 		$frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319     foxr      931: 	    }
                    932: 	}
                    933: 	$result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
                    934:     }
                    935: 
1.159     albertel  936:     my $status=$Apache::inputtags::status['-1'];
                    937:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    938: 	$target eq 'tex') {
1.249     albertel  939: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159     albertel  940: 	    # if part is zero, no <part>s existed, so we need to the grading
1.249     albertel  941: 	    if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
                    942: 		&Apache::inputtags::grade;
1.324     albertel  943: 	    } elsif ($status eq 'NEEDS_CHECKIN') {
                    944: 		# no need to grade, and don't want to hide data
1.249     albertel  945: 	    } else {
                    946: 		# move any submission data to .hidden
                    947: 		&Apache::inputtags::hidealldata($Apache::inputtags::part);
                    948: 	    }
1.159     albertel  949: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                    950: 		  $Apache::inputtags::part eq '0' &&
1.252     albertel  951: 		  $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159     albertel  952: 	    # if part is zero, no <part>s existed, so we need show the current
                    953: 	    # grading status
                    954: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                    955: 	    $result.= $gradestatus;
                    956: 	}
                    957: 	if (
1.284     albertel  958: 	    (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159     albertel  959: 	    ($target eq 'answer') || ($target eq 'tex')
                    960: 	   ) {
1.227     albertel  961: 	    if ($target ne 'tex' &&
1.284     albertel  962: 		$env{'form.answer_output_mode'} ne 'tex') {
1.254     www       963: 		$result.="</form>";
1.348     albertel  964: 		$result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159     albertel  965: 	    }
                    966: 	    if ($target eq 'web') {
1.346     albertel  967: 		$result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159     albertel  968: 	    } elsif ($target eq 'tex') {
1.178     sakharuk  969: 		my $endminipage = '';
1.284     albertel  970: 		if (not $env{'form.problem_split'}=~/yes/) {
1.178     sakharuk  971: 		    $endminipage = '\end{minipage}';
                    972: 		}
1.284     albertel  973:                 if ($env{'form.print_discussions'} eq 'yes') {
1.263     sakharuk  974: 		    $result.=&Apache::lonxml::xmlend($target,$parser);
1.159     albertel  975: 		} else {
1.262     sakharuk  976: 		    $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284     albertel  977: 		    if (not $env{'request.symb'} =~ m/\.page_/) {
1.262     sakharuk  978: 			$result .= $endminipage.'\end{document} ';
                    979: 		    } else {
1.382     albertel  980: 			$result .= $endminipage;
1.262     sakharuk  981: 		    }
1.159     albertel  982: 		}
                    983: 	    }
                    984: 	}
                    985: 	if ($target eq 'grade') {
                    986: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                    987: 	    &finalize_storage();
                    988: 	}
1.284     albertel  989: 	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
                    990: 	    && $env{'form.answer_output_mode'} ne 'tex') {
1.346     albertel  991: 	    $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294     albertel  992: 	                        # normally we get it from above, but in CSTR
1.172     albertel  993: 	                        # we always show answer mode too.
1.159     albertel  994: 	}
                    995:     } elsif ($target eq 'meta') {
                    996: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel  997: 	    @Apache::inputtags::response=();
1.159     albertel  998: 	    $result=&Apache::response::mandatory_part_meta;
                    999: 	}
1.215     albertel 1000: 	$result.=&Apache::response::meta_part_order();
1.258     albertel 1001: 	$result.=&Apache::response::meta_response_order();
1.159     albertel 1002:     } elsif ($target eq 'edit') {
                   1003: 	&Apache::lonxml::debug("in end_problem with $target, edit");
1.314     albertel 1004: 	$result .= &problem_edit_footer();
1.320     albertel 1005:     } elsif ($target eq 'modified') {
                   1006: 	 $result .= $token->[2];
1.159     albertel 1007:     }
1.155     albertel 1008: 
1.284     albertel 1009:     if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177     albertel 1010: 	&Apache::inputtags::check_for_duplicate_ids();
                   1011:     }
1.204     albertel 1012: 
                   1013:     &reset_problem_globals('problem');
1.159     albertel 1014: 
                   1015:     return $result;
1.48      albertel 1016: }
                   1017: 
1.108     albertel 1018: 
1.48      albertel 1019: sub start_library {
1.159     albertel 1020:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343     albertel 1021:     my ($result,$form_tag_start);
1.371     albertel 1022:     if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244     albertel 1023: 	&init_problem_globals('library');
                   1024: 	$Apache::lonhomework::type='problem';
                   1025:     }
1.159     albertel 1026:     if ($target eq 'edit') {
1.343     albertel 1027: 	($result,$form_tag_start)=
                   1028: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1029: 			'Edit');
                   1030: 	$result.=$form_tag_start.&problem_edit_header();
1.159     albertel 1031: 	my $temp=&Apache::edit::insertlist($target,$token);
                   1032: 	$result.=$temp;
                   1033:     } elsif ($target eq 'modified') {
                   1034: 	$result=$token->[4];
1.340     albertel 1035:     } elsif (($target eq 'web' || $target eq 'webgrade')
1.371     albertel 1036: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340     albertel 1037: 	     && $env{'request.state'} eq "construct" ) {
1.159     albertel 1038: 	my $name=&get_resource_name($parstack,$safeeval);
1.343     albertel 1039: 	($result,$form_tag_start)=
                   1040: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1041: 			$name);
1.159     albertel 1042: 	my $rndseed=&setup_rndseed($safeeval);
1.343     albertel 1043: 	$result.=" \n $form_tag_start".	
1.159     albertel 1044: 		  '<input type="hidden" name="submitted" value="yes" />';
                   1045: 	$result.=&problem_web_to_edit_header($rndseed);
                   1046:     }
                   1047:     return $result;
1.48      albertel 1048: }
                   1049: 
                   1050: sub end_library {
1.159     albertel 1051:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1052:     my $result='';
                   1053:     if ($target eq 'edit') {
                   1054: 	$result=&problem_edit_footer();
1.371     albertel 1055:     } elsif ($target eq 'web' 
                   1056: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library') 
                   1057: 	     && $env{'request.state'} eq "construct") {
1.349     albertel 1058: 	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159     albertel 1059:     }
1.371     albertel 1060:     if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
                   1061: 	&reset_problem_globals('library');
                   1062:     }
1.159     albertel 1063:     return $result;
1.197     www      1064: }
                   1065: 
                   1066: sub start_definetag {
1.326     albertel 1067:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197     www      1068: 
                   1069:     my $result;
                   1070: 
                   1071:     my $name = $token->[2]->{'name'};
1.326     albertel 1072:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.197     www      1073:     if ($name=~/^\//) {
                   1074: 	$result=
                   1075:  '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
                   1076:     } else {
                   1077: 	$result=
                   1078:  '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
                   1079:     }
                   1080:     $skip=~s/\</\&lt\;/gs;
                   1081:     $skip=~s/\>/\&gt\;/gs;
                   1082:     $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
                   1083:     return $result;
                   1084: }
                   1085: 
                   1086: sub end_definetag {
                   1087:     return '';
1.1       albertel 1088: }
                   1089: 
                   1090: sub start_block {
1.201     albertel 1091:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel 1092: 
                   1093:     my $result;
1.1       albertel 1094: 
1.339     albertel 1095:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer'  ||
                   1096: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159     albertel 1097: 	my $code = $token->[2]->{'condition'};
1.385     albertel 1098: 	if (defined($code) && $code ne '') {
1.137     albertel 1099: 	    if (!$Apache::lonxml::default_homework_loaded) {
                   1100: 		&Apache::lonxml::default_homework_load($safeeval);
                   1101: 	    }
1.131     albertel 1102: 	    $result = &Apache::run::run($code,$safeeval);
                   1103: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                   1104: 	} else {
                   1105: 	    $result='1';
                   1106: 	}
                   1107: 	if ( ! $result ) {
1.201     albertel 1108: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel 1109: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1110: 	}
                   1111: 	$result='';
                   1112:     } elsif ($target eq 'edit') {
                   1113: 	$result .=&Apache::edit::tag_start($target,$token);
                   1114: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                   1115: 					  $token,40);
                   1116: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1117:     } elsif ($target eq 'modified') {
                   1118: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1119: 						     $safeeval,'condition');
                   1120: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel 1121:     }
1.131     albertel 1122:     return $result;
1.1       albertel 1123: }
                   1124: 
                   1125: sub end_block {
1.167     www      1126:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1127:     my $result;
                   1128:     if ($target eq "edit") {
                   1129: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1130:     }
                   1131:     return $result;
                   1132: }
                   1133: 
                   1134: sub start_languageblock {
1.201     albertel 1135:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www      1136: 
                   1137:     my $result;
                   1138: 
1.339     albertel 1139:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1140: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201     albertel 1141: 	my $include = $token->[2]->{'include'};
                   1142: 	my $exclude = $token->[2]->{'exclude'};
1.394   ! www      1143:         my $preferred_language=(&Apache::loncommon::preferred_languages)[0];
        !          1144: # This should not even happen, since we should at least have the server language
        !          1145:         unless ($preferred_language) { $preferred_language='en'; }
        !          1146: # If the languageblock has no arguments, show the contents
1.201     albertel 1147:         $result='1';
1.394   ! www      1148: # Do we have an include argument?
1.201     albertel 1149: 	if ($include) {
1.394   ! www      1150: # If include is specified, by default, don't render the block
1.201     albertel 1151:             $result='';
1.394   ! www      1152:             foreach my $included_language (split(/\,/,$include)) {
        !          1153: # ... but if my preferred language is included, render it
        !          1154:                 if ($included_language eq $preferred_language) { $result='1'; }
1.201     albertel 1155:             }
                   1156: 	}
1.394   ! www      1157: # Do we have an exclude argument?
1.201     albertel 1158:         if ($exclude) {
1.394   ! www      1159:             $result='1';
        !          1160:             foreach my $excluded_language (split(/\,/,$exclude)) {
        !          1161:                 if ($excluded_language eq $preferred_language) { $result='0'; }
1.201     albertel 1162:             }
                   1163: 	}
                   1164: 	if ( ! $result ) {
                   1165: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                   1166: 						   $style);
                   1167: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1168: 	}
                   1169: 	$result='';
1.167     www      1170:     } elsif ($target eq 'edit') {
                   1171: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1172: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www      1173: 					  $token,40);
1.211     albertel 1174: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www      1175: 					  $token,40);
                   1176: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1177:     } elsif ($target eq 'modified') {
                   1178: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel 1179: 						     $safeeval,'include',
                   1180: 						     'exclude');
1.167     www      1181: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1182:     }
                   1183:     return $result;
                   1184: }
                   1185: 
                   1186: sub end_languageblock {
1.170     www      1187:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1188:     my $result;
1.201     albertel 1189:     if ($target eq "edit") {
1.170     www      1190: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1191:     }
                   1192:     return $result;
                   1193: }
                   1194: 
                   1195: sub start_instructorcomment {
1.201     albertel 1196:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www      1197: 
                   1198:     my $result;
                   1199: 
1.339     albertel 1200:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1201: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284     albertel 1202:         $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
                   1203: 	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201     albertel 1204: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                   1205: 						   $parser,$style);
1.170     www      1206: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   1207: 	}
                   1208: 	$result='';
                   1209:     } elsif ($target eq 'edit') {
                   1210: 	$result .=&Apache::edit::tag_start($target,$token);
                   1211: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1212:     }
                   1213:     return $result;
                   1214: }
                   1215: 
                   1216: sub end_instructorcomment {
1.159     albertel 1217:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1218:     my $result;
                   1219:     if ($target eq "edit") {
                   1220: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   1221:     }
                   1222:     return $result;
1.4       tsai     1223: }
                   1224: 
                   1225: sub start_while {
1.326     albertel 1226:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1227: 
1.160     albertel 1228:     my $result;
1.339     albertel 1229:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1230: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 1231: 	my $code = $token->[2]->{'condition'};
1.4       tsai     1232: 
1.160     albertel 1233: 	push( @Apache::structuretags::whileconds, $code);
                   1234: 	if (!$Apache::lonxml::default_homework_loaded) {
                   1235: 	    &Apache::lonxml::default_homework_load($safeeval);
                   1236: 	}
                   1237: 	my $result = &Apache::run::run($code,$safeeval);
1.326     albertel 1238: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160     albertel 1239: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel 1240: 	push( @Apache::structuretags::whileline, $token->[5]);
                   1241: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel 1242: 	if ( $result ) {
                   1243: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                   1244: 	}
                   1245:     } elsif ($target eq 'edit') {
                   1246: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 1247: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel 1248: 					  $token,40);
                   1249: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1250:     } elsif ($target eq 'modified') {
                   1251: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1252: 						     $safeeval,'condition');
                   1253: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel 1254:     }
1.160     albertel 1255:     return $result;
1.4       tsai     1256: }
                   1257: 
                   1258: sub end_while {
1.159     albertel 1259:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 1260:     my $result;
                   1261: 
1.339     albertel 1262:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1263: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 1264: 	my $code = pop(@Apache::structuretags::whileconds);
                   1265: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel 1266: 	my $line = pop(@Apache::structuretags::whileline);
                   1267: 	my $return = &Apache::run::run($code,$safeeval);
                   1268: 	my $starttime=time;
                   1269: 	my $error=0;
                   1270: 	while ($return) {
                   1271: 	    if (time-$starttime >
                   1272: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378     albertel 1273: 		$return = 0; $error=1; next;
1.161     albertel 1274: 	    }
                   1275: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
1.380     albertel 1276: 	    if ($target eq 'grade' || $target eq 'answer' ||
                   1277: 		$target eq 'analyze') {
                   1278: 		# grade/answer/analyze should produce no output but if we
                   1279: 		# are redirecting, the redirecter should know what to do
                   1280: 		# with the output
                   1281: 		if (!$Apache::lonxml::redirection) { undef($result); }
                   1282: 	    }
1.161     albertel 1283: 	    $return = &Apache::run::run($code,$safeeval);
                   1284: 	}
                   1285: 	if ($error) {
1.270     albertel 1286: 	    &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 1287: 	}
                   1288:     } elsif ($target eq "edit") {
                   1289: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel 1290:     }
1.160     albertel 1291:     return $result;
1.1       albertel 1292: }
1.6       tsai     1293: 
1.160     albertel 1294: # <randomlist show="1">
1.6       tsai     1295: #  <tag1>..</tag1>
                   1296: #  <tag2>..</tag2>
                   1297: #  <tag3>..</tag3>
1.160     albertel 1298: #  ...
1.6       tsai     1299: # </randomlist>
                   1300: sub start_randomlist {
1.326     albertel 1301:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1302:     my $result;
1.339     albertel 1303:     if ($target eq 'answer' || $target eq 'grade'   || $target eq 'web' ||
                   1304: 	$target eq 'tex'    || $target eq 'analyze' || $target eq 'webgrade') {
1.331     albertel 1305: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305     albertel 1306: 	my $b_parser= HTML::LCParser->new(\$body);
                   1307: 	$b_parser->xml_mode(1);
                   1308: 	$b_parser->marked_sections(1);
1.159     albertel 1309: 	my $b_tok;
                   1310: 	my @randomlist;
                   1311: 	my $list_item;
                   1312: 	while($b_tok = $b_parser->get_token() ) {
                   1313: 	    if($b_tok->[0] eq 'S') { # start tag
                   1314: 		# get content of the tag until matching end tag
                   1315: 		# get all text upto the matching tag
                   1316: 		# and push the content into @randomlist
                   1317: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                   1318: 							   $b_parser);
                   1319: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                   1320: 		push(@randomlist,$list_item);
                   1321: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                   1322:                 #         $list_item</b>";
                   1323: 	    }
                   1324: 	    if($b_tok->[0] eq 'T') { # text
                   1325: 		# what to do with text in between tags?
                   1326: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                   1327: 	    }
                   1328: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                   1329: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                   1330: 	    # }
                   1331: 	}
1.303     albertel 1332: 	if (@randomlist) {
                   1333: 	    my @idx_arr = (0 .. $#randomlist);
                   1334: 	    &Apache::structuretags::shuffle(\@idx_arr);
                   1335: 	    my $bodytext = '';
                   1336: 	    my $show=$#randomlist;
                   1337: 	    my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                   1338: 	    $showarg--;
                   1339: 	    if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
                   1340: 	    for(0 .. $show) {
                   1341: 		$bodytext .= "$randomlist[ $idx_arr[$_] ]";
                   1342: 	    }
                   1343: 	    &Apache::lonxml::newparser($parser,\$bodytext);
1.159     albertel 1344: 	}
                   1345:     } elsif ($target eq 'edit' ) {
                   1346: 	$result .=&Apache::edit::tag_start($target,$token);
                   1347: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                   1348: 					   $token,5);
                   1349: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1350:     } elsif ($target eq 'modified' ) {
                   1351: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1352: 						     $safeeval,'show');
                   1353: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1354:     }
                   1355:     return $result;
1.7       tsai     1356: }
                   1357: 
                   1358: sub shuffle {
                   1359:     my $a=shift;
                   1360:     my $i;
1.303     albertel 1361:     if (ref($a) eq 'ARRAY' && @$a) {
1.251     albertel 1362: 	&Apache::response::pushrandomnumber();
1.159     albertel 1363: 	for($i=@$a;--$i;) {
                   1364: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                   1365: 	    next if $i == $j;
                   1366: 	    @$a[$i,$j] = @$a[$j,$i];
                   1367: 	}
1.251     albertel 1368: 	&Apache::response::poprandomnumber();
1.7       tsai     1369:     }
1.6       tsai     1370: }
                   1371: 
                   1372: sub end_randomlist {
1.159     albertel 1373:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1374:     my $result;
                   1375:     if ($target eq 'edit' ) {
                   1376: 	$result=&Apache::edit::tag_end($target,$token,
                   1377: 				       'End Randomly Parsed Block');
                   1378:     }
                   1379:     return $result;
1.6       tsai     1380: }
                   1381: 
1.283     albertel 1382: sub ordered_show_check {
                   1383:     my $last_part=$Apache::inputtags::partlist[-2];
                   1384:     my $in_order=
                   1385: 	&Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
                   1386:     my $in_order_show=1;
                   1387:     if ($last_part ne '0' && lc($in_order) eq 'yes') {
                   1388: 	$in_order_show=&Apache::response::check_status($last_part);
                   1389:     }
                   1390:     return $in_order_show;
                   1391: }
                   1392: 
1.11      albertel 1393: sub start_part {
1.326     albertel 1394:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321     albertel 1395:     if (!$Apache::lonxml::metamode) {
                   1396: 	&Apache::lonxml::startredirection(); # we'll use redirection to fix up 
                   1397: 	                                     # duedates.
                   1398:     }
1.159     albertel 1399:     my $result='';
1.386     albertel 1400:     my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159     albertel 1401:     $Apache::inputtags::part=$id;
1.177     albertel 1402:     push(@Apache::inputtags::partlist,$id);
                   1403:     @Apache::inputtags::response=();
1.159     albertel 1404:     @Apache::inputtags::previous=();
                   1405:     @Apache::inputtags::previous_version=();
1.241     albertel 1406:     $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159     albertel 1407:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259     albertel 1408:     my $newtype=&Apache::lonnet::EXT("resource.$id.type");
                   1409:     if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283     albertel 1410:     my $in_order_show=&ordered_show_check();
1.214     albertel 1411:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259     albertel 1412:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209     albertel 1413:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1414: 
                   1415:     if ($target eq 'meta') {
1.224     www      1416: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   1417: 	return &Apache::response::mandatory_part_meta.
                   1418: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 1419:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   1420: 	     $target eq 'answer' || $target eq 'tex') {
1.283     albertel 1421: 	if ($hidden || !$in_order_show) {
1.326     albertel 1422: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159     albertel 1423: 	} else {
                   1424: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   1425: 	    push (@Apache::inputtags::status,$status);
                   1426: 	    my $expression='$external::datestatus="'.$status.'";';
                   1427: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   1428: 	    &Apache::run::run($expression,$safeeval);
1.284     albertel 1429: 	    if ($env{'request.state'} eq 'construct') {
1.241     albertel 1430: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 1431: 	    }
1.216     albertel 1432: 	    if (( $status eq 'CLOSED' ) ||
                   1433: 		( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 1434: 		( $status eq 'NOT_YET_VIEWED') ||
1.216     albertel 1435: 		( $status eq 'BANNED') ||
                   1436: 		( $status eq 'UNAVAILABLE') ||
                   1437: 		( $status eq 'INVALID_ACCESS')) {
1.326     albertel 1438: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
                   1439: 							   $style);
1.159     albertel 1440: 		if ( $target eq "web" ) {
1.211     albertel 1441: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 1442: 		} elsif ( $target eq 'tex' ) {
1.284     albertel 1443: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.211     albertel 1444: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 1445: 		    } else {
1.211     albertel 1446: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 1447: 		    }
1.159     albertel 1448: 		}
                   1449: 	    } else {
                   1450: 		if ($target eq 'tex') {
1.284     albertel 1451: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.264     sakharuk 1452: 			if ($$tagstack[-2] eq 'td') {
1.388     foxr     1453: 			    $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264     sakharuk 1454: 			} else {
                   1455: 			    $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   1456: 			}
1.195     sakharuk 1457: 		    }
1.159     albertel 1458: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284     albertel 1459: 		    my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222     sakharuk 1460: 		    my @allkeys = split /,/,$allkeys;
                   1461: 		    my $allow_print_points = 0;
                   1462: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 1463: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 1464: 			    if ($1 ne '0') {$allow_print_points=1;}
                   1465: 			}
                   1466: 		    }
1.275     albertel 1467: 		    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   1468: 		    if (defined($maxtries) && $maxtries < 0) {
                   1469: 			$allow_print_points=0;
                   1470: 		    }
1.302     albertel 1471: 		    if (lc($env{'course.'.$env{'request.course.id'}.
                   1472: 				    '.disableexampointprint'}) eq 'yes') {
                   1473: 			$allow_print_points=0;
                   1474: 		    }
1.222     sakharuk 1475: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233     www      1476: 		} elsif ($target eq 'web') {
1.356     www      1477: 		    $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159     albertel 1478: 		}
                   1479: 	    }
                   1480: 	}
                   1481:     } elsif ($target eq 'edit') {
                   1482: 	$result.=&Apache::edit::tag_start($target,$token);
                   1483: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   1484: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      1485: 	    '&nbsp;&nbsp;'.
                   1486: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 1487: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1488:     } elsif ($target eq 'modified') {
                   1489: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 1490: 						     $safeeval,'id','display');
1.159     albertel 1491: 	if ($constructtag) {
1.225     albertel 1492: 	    #limiting ids to only letters numbers, and space
1.224     www      1493: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 1494: 	    $result = &Apache::edit::rebuild_tag($token);
                   1495: 	}
                   1496:     }
                   1497:     return $result;
1.11      albertel 1498: }
                   1499: 
                   1500: sub end_part {
1.159     albertel 1501:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1502:     &Apache::lonxml::debug("in end_part $target ");
                   1503:     my $status=$Apache::inputtags::status['-1'];
                   1504:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283     albertel 1505:     my $in_order_show=&ordered_show_check();
1.321     albertel 1506:     my $result;
                   1507:     if (!$Apache::lonxml::metamode) {
                   1508: 	$result = &Apache::lonxml::endredirection(); # started in &start_part
1.329     albertel 1509: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel 1510:     }
1.312     albertel 1511:     if ($target eq 'grade') {
1.249     albertel 1512: 	if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283     albertel 1513: 	    !$hidden && $in_order_show) {
1.311     foxr     1514: 	    $result.=&Apache::inputtags::grade;
1.249     albertel 1515: 	} else {
                   1516: 	    # move any submission data to .hidden
                   1517: 	    &Apache::inputtags::hidealldata($Apache::inputtags::part);
                   1518: 	}
1.283     albertel 1519:     } elsif (($target eq 'web' || $target eq 'tex') &&
                   1520: 	     !$hidden && $in_order_show) {
1.159     albertel 1521: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   1522: 							$target);
1.212     albertel 1523: 	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
                   1524: 	    $gradestatus='';
                   1525: 	}
1.311     foxr     1526: 	$result.=$gradestatus;
1.265     sakharuk 1527: 	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';} 
1.181     albertel 1528:     } elsif ($target eq 'edit') {
1.311     foxr     1529: 	$result.=&Apache::edit::end_table();
1.322     albertel 1530:     } elsif ($target eq 'modified') {
                   1531: 	 $result .= $token->[2];
1.159     albertel 1532:     }
                   1533:     pop @Apache::inputtags::status;
                   1534:     $Apache::inputtags::part='';
1.295     albertel 1535:     $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159     albertel 1536:     return $result;
1.11      albertel 1537: }
1.1       albertel 1538: 
1.25      albertel 1539: sub start_preduedate {
1.326     albertel 1540:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339     albertel 1541:     if ($target eq 'web' || $target eq 'grade'    || $target eq 'answer' ||
                   1542: 	$target eq 'tex' || $target eq 'webgrade') {
1.236     albertel 1543: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300     albertel 1544: 	if (!$Apache::lonhomework::scantronmode &&
                   1545: 	    $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 1546: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   1547: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326     albertel 1548: 	    &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159     albertel 1549: 	}
1.24      albertel 1550:     }
1.159     albertel 1551:     return '';
1.24      albertel 1552: }
                   1553: 
1.25      albertel 1554: sub end_preduedate {
1.159     albertel 1555:     return '';
1.24      albertel 1556: }
                   1557: 
1.369     foxr     1558: # In all the modes where <postanswerdate> text is 
                   1559: # displayable,  all we do is eat up the text between the start/stop
                   1560: # tags if the conditions are not right to display it.
1.25      albertel 1561: sub start_postanswerdate {
1.326     albertel 1562:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370     foxr     1563:     my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
                   1564: 	&Apache::lonnet::allowed('pav',
                   1565: 			   $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369     foxr     1566:     if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370     foxr     1567: 	$target eq 'tex' ) {
1.300     albertel 1568: 	if ($Apache::lonhomework::scantronmode ||
1.370     foxr     1569: 	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
                   1570: 	    (($target eq 'tex') && !$pav)) {
1.326     albertel 1571: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159     albertel 1572: 	}
                   1573:     }
                   1574:     return '';
1.24      albertel 1575: }
                   1576: 
1.25      albertel 1577: sub end_postanswerdate {
1.159     albertel 1578:     return '';
1.24      albertel 1579: }
                   1580: 
1.25      albertel 1581: sub start_notsolved {
1.326     albertel 1582:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1583:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339     albertel 1584: 	$target eq 'tex' || $target eq 'webgrade') {
1.159     albertel 1585: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   1586: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 1587: 	if ($gradestatus =~ /^correct/ &&
                   1588: 	    &Apache::response::show_answer()) {
1.159     albertel 1589: 	    &Apache::lonxml::debug("skipping");
1.326     albertel 1590: 	    &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159     albertel 1591: 	}
1.24      albertel 1592:     }
1.159     albertel 1593:     return '';
1.24      albertel 1594: }
                   1595: 
1.25      albertel 1596: sub end_notsolved {
1.159     albertel 1597:     return '';
1.24      albertel 1598: }
                   1599: 
                   1600: sub start_solved {
1.326     albertel 1601:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1602:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1603: 	$target eq 'tex') {
                   1604: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 1605: 	if ($gradestatus !~ /^correct/ ||
                   1606: 	    !&Apache::response::show_answer()) {
1.326     albertel 1607: 	    &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159     albertel 1608: 	}
1.24      albertel 1609:     }
1.159     albertel 1610:     return '';
1.24      albertel 1611: }
                   1612: 
                   1613: sub end_solved {
1.248     albertel 1614:     return '';
                   1615: }
                   1616: 
                   1617: sub start_problemtype {
1.326     albertel 1618:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248     albertel 1619:     my $result;
1.339     albertel 1620:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   1621: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248     albertel 1622: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
                   1623: 	if (!defined($mode)) { $mode='show'; }
                   1624: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
                   1625: 	my $found=0;
                   1626: 	foreach my $type (split(',',$for)) {
                   1627: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
                   1628: 	}
                   1629: 	if ($mode eq 'show' && !$found) {
1.326     albertel 1630: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 1631: 	}
                   1632: 	if ($mode eq 'hide' && $found) {
1.326     albertel 1633: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 1634: 	}
                   1635:     } elsif ($target eq 'edit') {
                   1636: 	$result .=&Apache::edit::tag_start($target,$token);
                   1637: 	$result.=&Apache::edit::select_arg('Mode:','mode',
                   1638: 					   [['show','Show'],
                   1639: 					    ['hide','Hide']]
                   1640: 					   ,$token);
                   1641: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
                   1642: 					     [ ['exam','Exam/Quiz Problem'],
                   1643: 					       ['survey','Survey'],
                   1644: 					       ['problem','Homework Problem'] ]
                   1645: 					     ,$token);
                   1646: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   1647:     } elsif ($target eq 'modified') {
                   1648: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   1649: 						     $safeeval,'mode','for');
                   1650: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   1651:     }
                   1652:     return $result;
                   1653: }
                   1654: 
                   1655: sub end_problemtype {
1.159     albertel 1656:     return '';
1.24      albertel 1657: }
1.34      albertel 1658: 
                   1659: sub start_startouttext {
1.159     albertel 1660:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1661:     my @result=(''.'');
                   1662:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
                   1663:     return (@result);
1.34      albertel 1664: }
1.159     albertel 1665: 
1.34      albertel 1666: sub end_startouttext {
1.326     albertel 1667:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 1668:     my $result='';
                   1669:     my $text='';
                   1670: 
                   1671:     if ($target eq 'edit') {
1.326     albertel 1672: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211     albertel 1673: 	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
                   1674: <td>".&mt('Delete:').
1.159     albertel 1675:                  &Apache::edit::deletelist($target,$token)
                   1676: 		 ."</td>
1.42      albertel 1677: <td>".
1.159     albertel 1678:                  &Apache::edit::insertlist($target,$token).
1.362     albertel 1679: 		 '</td><td align="right" valign="top">' .
                   1680: 		 &Apache::loncommon::helpLatexCheatsheet().
1.159     albertel 1681: 		 &Apache::edit::end_row().
1.362     albertel 1682:                  &Apache::edit::start_spanning_row()."\n".
1.255     www      1683: 		 &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159     albertel 1684:     }
                   1685:     if ($target eq 'modified') {
1.219     albertel 1686: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 1687:     }
                   1688:     if ($target eq 'tex') {
                   1689: 	$result .= '\noindent ';
                   1690:     }
                   1691:     return $result;
1.34      albertel 1692: }
1.159     albertel 1693: 
1.34      albertel 1694: sub start_endouttext {
1.159     albertel 1695:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1696:     my $result='';
                   1697:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   1698:     if ($target eq "modified") {
                   1699: 	$result='<endouttext />'.
1.377     albertel 1700: 	    &Apache::edit::handle_insertafter('startouttext');
                   1701:     }
1.159     albertel 1702:     return $result;
1.34      albertel 1703: }
1.159     albertel 1704: 
1.34      albertel 1705: sub end_endouttext {
1.159     albertel 1706:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1707:     my @result=('','');
                   1708:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   1709:     return (@result);
1.34      albertel 1710: }
1.159     albertel 1711: 
1.45      albertel 1712: sub delete_startouttext {
1.326     albertel 1713:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   1714:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159     albertel 1715:     my $text=$$parser['-1']->get_text("/endouttext");
                   1716:     my $ntoken=$$parser['-1']->get_token();
                   1717:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   1718:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   1719:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   1720:     # they did the last time round
                   1721:     &Apache::lonxml::increasedepth($ntoken);
                   1722:     &Apache::lonxml::decreasedepth($ntoken);
                   1723:     return 1;
1.193     www      1724: }
                   1725: 
                   1726: sub start_simpleeditbutton {
                   1727:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   1728:     my $result='';
1.284     albertel 1729:     if (($env{'form.simple_edit_button'} ne 'off') &&
1.273     albertel 1730: 	($target eq 'web') &&
1.330     albertel 1731:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284     albertel 1732:         my $url=$env{'request.noversionuri'};
1.193     www      1733:         $url=~s/\?.*$//;
1.367     albertel 1734: 	my ($symb) = &Apache::lonnet::whichuser();
1.194     www      1735: 	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356     www      1736:                 '<a href="'.$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      1737: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193     www      1738:     }
                   1739:     return $result;
                   1740: }
                   1741: 
                   1742: sub end_simpleeditbutton {
                   1743:     return '';
1.45      albertel 1744: }
1.34      albertel 1745: 
1.1       albertel 1746: 1;
                   1747: __END__

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