Annotation of loncom/homework/structuretags.pm, revision 1.527

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.527   ! golterma    4: # $Id: structuretags.pm,v 1.526 2014/12/15 18:44:20 raeburn 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: 
1.435     jms        30: =pod
                     31: 
                     32: =head1 NAME
                     33: 
                     34: Apache::structuretags
                     35: 
                     36: =head1 SYNOPSIS
                     37: 
                     38: 
                     39: This is part of the LearningOnline Network with CAPA project
                     40: described at http://www.lon-capa.org.
                     41: 
                     42: 
                     43: =head1 NOTABLE SUBROUTINES
                     44: 
                     45: =over
                     46: 
                     47: =item 
                     48: 
                     49: =back
                     50: 
                     51: =cut
                     52: 
1.133     sakharuk   53: 
1.1       albertel   54: package Apache::structuretags; 
                     55: 
                     56: use strict;
                     57: use Apache::lonnet;
1.101     sakharuk   58: use Apache::File();
1.147     www        59: use Apache::lonmenu;
1.210     albertel   60: use Apache::lonlocal;
1.231     sakharuk   61: use Apache::lonxml;
1.434     foxr       62: use Apache::londefdef;
1.338     albertel   63: use Apache::lonenc();
1.500     foxr       64: use Apache::loncommon();
1.267     albertel   65: use Time::HiRes qw( gettimeofday tv_interval );
1.356     www        66: use lib '/home/httpd/lib/perl/';
                     67: use LONCAPA;
                     68:  
1.78      harris41   69: BEGIN {
1.469     www        70:     &Apache::lonxml::register('Apache::structuretags',('block','languageblock','translated','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startpartmarker','startouttext','endpartmarker','endouttext','simpleeditbutton','definetag'));
1.10      albertel   71: }
                     72: 
1.500     foxr       73: 
                     74: #---------------------------------------------------------------------------------
                     75: # 
                     76: #  This section of code deals with hyphenation management.
                     77: #  We must do three things:
                     78: #  - keep track fo the desired languages to alter the header.
                     79: #  - provide hyphenation selection as needed by each language that appears in the
                     80: #    text.
                     81: #  - Provide the header text needed to make available the desired hyphenations.
                     82: #
                     83: #
                     84: 
                     85: # Hash whose keys are the languages encountered in the document/resource.
                     86: #
                     87: 
                     88: my %languages_required;
                     89: ##
                     90: #   Given a language selection as input returns a chunk of LaTeX that
                     91: #   selects the required hyphenator.
                     92: #
                     93: #  @param language - the language being selected.
                     94: #  @return string
                     95: #  @retval The LaTeX needed to select the hyphenation appropriate to the language. 
                     96: #   
                     97: sub select_hyphenation {
                     98:     my $language  = shift;
                     99: 
                    100:     $language = &Apache::loncommon::latexlanguage($language); # Translate -> latex language.
                    101: 
                    102:     # If there is no latex language there's not much we can do:
                    103: 
                    104:     if ($language) {
                    105: 	&require_language($language);
                    106: 	my $babel_hyphenation = "\\selectlanguage{$language}";
                    107: 	
                    108: 	return $babel_hyphenation;
                    109:     } else {
                    110: 	return '';
                    111:     }
                    112: }
                    113: ##
                    114: # Selects hyphenation based on the current problem metadata.
                    115: # This requires that
                    116: # - There is a language metadata item set for the problem.
                    117: # - The language has a latex/babel hyphenation.
                    118: #
                    119: # @note: Uses &Apache::lonxml::request to locate the Uri associated with
                    120: #        this problem.
                    121: # @return string (possibly empty).
                    122: # @retval If not empty an appropriate \selectlanguage{} directive.
                    123: #
                    124: sub select_metadata_hyphenation {
                    125:     my $uri      = $Apache::lonxml::request->uri;
                    126:     my $language = &Apache::lonnet::metadata($uri, 'language'); 
                    127:     my $latex_language = &Apache::loncommon::latexhyphenation($language);
                    128:     if ($latex_language) {
                    129: 	return '\selectlanguage{'.$latex_language."}\n";
                    130:     }
                    131:     return '';			# no latex hyphenation or no lang metadata.
                    132: }
                    133: 
                    134: 
                    135: ##
                    136: #  Clears the set of languages required by the document being rendered.
                    137: #
                    138: sub clear_required_languages {
                    139:     %languages_required = ();
                    140: }
                    141: ##
                    142: # Allows an external client of this module to register a need for a language:
                    143: #
                    144: # @param LaTeX language required:
                    145: #
                    146: sub require_language {
                    147:     my $language = shift;
                    148:     $languages_required{$language} = 1;
                    149: }
                    150: 
                    151: ##
                    152: # Provides the header for babel that indicates the languages
                    153: # the document requires.
                    154: # @return string
                    155: # @retval \usepackage[lang1,lang2...]{babel}
                    156: # @retval ''   if there are no languages_required.
                    157: sub languages_header {
                    158:     my $header    ='';
                    159:     my @languages = (keys(%languages_required));
                    160: 
                    161:     # Only generate the header if there are languages:
                    162: 
                    163:     if (scalar @languages) {
                    164: 	my $language_list = join(',', (@languages));
                    165: 	$header  = '\usepackage['.$language_list."]{babel}\n";
                    166:     }
                    167:     return $header;
                    168: }
                    169: 
                    170: #----------------------------------------------------------------------------------
                    171: 
1.10      albertel  172: sub start_web {
1.326     albertel  173:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383     albertel  174:     if ($target ne 'edit' && $target ne 'modified') {
                    175: 	my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
                    176: 	if ($target eq 'web' || $target eq 'webgrade') {
                    177: 	    return $bodytext;
                    178: 	}
                    179:     } elsif ($target eq "edit" ) {
                    180: 	my $bodytext = 
                    181: 	    &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
                    182: 	my $result = &Apache::edit::tag_start($target,$token);
                    183: 	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
                    184: 	return $result;
                    185:     } elsif ( $target eq "modified" ) {
                    186: 	return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159     albertel  187:     }
                    188:     return '';
1.10      albertel  189: }
                    190: 
                    191: sub end_web {
1.44      ng        192:     return '';
1.10      albertel  193: }
                    194: 
                    195: sub start_tex {
1.326     albertel  196:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198     sakharuk  197:     my $result='';
1.383     albertel  198:     if ($target ne 'edit' && $target ne 'modified') {
                    199: 	my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
                    200: 	if ($target eq 'tex') {
1.434     foxr      201: 	    
                    202: 	    # If inside a table, occurrences of \\ must be removed;
                    203: 	    # else the table blows up.
                    204: 
                    205: 	    if (&Apache::londefdef::is_inside_of($tagstack, "table")) {
                    206: 		$bodytext =~ s/\\\\//g;
                    207: 	    }
1.432     foxr      208: 	    return $bodytext.'{}';
1.383     albertel  209: 	}
                    210:     } elsif ($target eq "edit" ) {
                    211: 	my $bodytext = 
                    212: 	    &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
                    213: 	my $result = &Apache::edit::tag_start($target,$token);
                    214: 	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
                    215: 	return $result;
                    216:     } elsif ( $target eq "modified" ) {
                    217: 	return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159     albertel  218:     }
1.198     sakharuk  219:     return $result;;
1.10      albertel  220: }
                    221: 
                    222: sub end_tex {
1.44      ng        223:     return '';
1.9       albertel  224: }
                    225: 
1.400     albertel  226: sub homework_js {
                    227:     return &Apache::loncommon::resize_textarea_js().
1.527   ! golterma  228:                 &Apache::loncommon::colorfuleditor_js().
1.416     raeburn   229:            &setmode_javascript().
1.400     albertel  230: 	<<'JS';
                    231: <script type="text/javascript">
1.483     raeburn   232: // <![CDATA[
1.494     raeburn   233: function setSubmittedPart (part,prefix) {
                    234:     if (typeof(prefix) == 'undefined') {
                    235:         this.document.lonhomework.submitted.value="part_"+part;
                    236:     } else {
                    237:         for (var i=0;i<this.document.lonhomework.elements.length;i++) {
                    238:             if (this.document.lonhomework.elements[i].name == prefix+'submitted') {
                    239:                 this.document.lonhomework.elements[i].value="part_"+part;
                    240:             }
                    241:         }
                    242:     }
1.400     albertel  243: }
                    244: 
                    245: function image_response_click (which, e) {
                    246:     init_geometry();
                    247:     if (!e) { e = window.event; } //IE
                    248:     var input_element = document.lonhomework.elements[which];
1.401     albertel  249:     var token_element = document.lonhomework.elements[which+'_token'];
1.400     albertel  250:     var token = token_element.value;
1.401     albertel  251:     var img_element   = document.getElementById(which+'_imageresponse');
1.400     albertel  252:     var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
                    253:     var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
                    254:     var click = x+':'+y;
                    255:     input_element.value = click;
1.485     raeburn   256:     img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
1.400     albertel  257: }
1.520     raeburn   258: 
                    259: var submithandled = 0;
1.521     raeburn   260: var keypresshandled = 0;
1.520     raeburn   261: 
                    262: $(document).ready(function(){
1.521     raeburn   263: 
                    264:     $(document).keypress(function(event){
                    265:         var keycode = (event.keyCode ? event.keyCode : event.which);
                    266:         if ((keycode == '13') && (keypresshandled == 0)) {
                    267:             if ( $( document.activeElement ).hasClass("LC_textline") ) {
                    268:                 keypresshandled = 1;
                    269:                 var idsArray = $( document.activeElement ).attr("id").split(/HWVAL_/);
                    270:                 if (idsArray.length) {
                    271:                     event.preventDefault();
                    272:                     var itemsArray = idsArray[1].split(/_/);
                    273:                     var buttonId = idsArray[0]+'submit_'+itemsArray[0];
                    274:                     $("#"+buttonId).trigger("click");
                    275:                 }
                    276:             }
                    277:         }
                    278:     });
                    279: 
1.520     raeburn   280:     $(document).delegate('form :submit', 'click', function( event ) {
                    281:         if ( $( this ).hasClass( "LC_hwk_submit" ) ) {
                    282:             var buttonId = this.id;
                    283:             if (submithandled == 0) {
                    284:                 submithandled = 1;
                    285:                 $( "#msg_"+buttonId ).css({"display": "inline","background-color": "#87cefa",
1.521     raeburn   286:                                            "color": "black","padding": "2px"}) ;
                    287:                 if (( $(this.form).id == "LC_page" ) && ($('input[name="all_submit"]').length )) {
1.522     raeburn   288:                     if (buttonId != "all_submit") {
                    289:                         $( ".LC_status_"+buttonId ).hide();
                    290:                         if (( "#"+buttonId+"_pressed" ).length) {
                    291:                             $( "#"+buttonId+"_pressed" ).val( "1" );
                    292:                         }
1.520     raeburn   293:                     }
1.522     raeburn   294:                 } else {
                    295:                     $( ".LC_status_"+buttonId ).hide();
1.520     raeburn   296:                 }
                    297:                 $(this.form).submit();
1.521     raeburn   298:                 $( ".LC_hwk_submit" ).prop( "disabled", true);
                    299:                 $( ".LC_textline" ).prop( "readonly", "readonly");
1.520     raeburn   300:                 event.preventDefault();
                    301:                 return true;
                    302:             }
                    303:         }
                    304:     });
                    305: });
                    306: 
1.483     raeburn   307: // ]]>
1.400     albertel  308: </script>
                    309: JS
                    310: }
                    311: 
1.416     raeburn   312: sub setmode_javascript {
                    313:     return <<"ENDSCRIPT";
                    314: <script type="text/javascript">
1.485     raeburn   315: // <![CDATA[
1.416     raeburn   316: function setmode(form,probmode) {
                    317:     form.problemmode.value = probmode;
                    318:     form.submit();
                    319: }
1.485     raeburn   320: // ]]>
1.416     raeburn   321: </script>
                    322: ENDSCRIPT
                    323: }
                    324: 
1.48      albertel  325: sub page_start {
1.345     albertel  326:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
                    327: 	$extra_head)=@_;
1.159     albertel  328:     my %found;
1.207     albertel  329:     foreach my $taginside (@$tagstack) {
1.159     albertel  330: 	foreach my $taglookedfor ('html','body','form') {
                    331: 	    if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
                    332: 	}
                    333:     }
                    334: 
1.343     albertel  335:     if ($target eq 'tex') {
                    336: 	return
                    337: 	    &Apache::londefdef::start_html($target,$token,$tagstack,
                    338: 					   $parstack,$parser,$safeeval);
                    339:     }
                    340: 
1.474     raeburn   341:     $extra_head .= &homework_js().
                    342:                    &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
                    343:     if (&Apache::lonhtmlcommon::htmlareabrowser()) {
                    344:         my %textarea_args = (
                    345:                                 dragmath => 'math',
                    346:                               );
                    347:         $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1.425     raeburn   348:     }
1.478     raeburn   349:     my $is_task = ($env{'request.uri'} =~ /\.task$/);
1.493     raeburn   350:     my $needs_upload;
1.495     raeburn   351:     my ($symb)= &Apache::lonnet::whichuser();
                    352:     my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
1.478     raeburn   353:     if ($is_task) {
1.495     raeburn   354:         $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
1.493     raeburn   355:     } else {
                    356:         if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.uploadedfiletypes") ne '') {
1.495     raeburn   357:             unless ($env{'request.state'} eq 'construct') {
                    358:                 my $navmap = Apache::lonnavmaps::navmap->new();
                    359:                 if (ref($navmap)) {
                    360:                     my $mapres = $navmap->getResourceByUrl($map);
1.496     raeburn   361:                     my $is_page;
                    362:                     if (ref($mapres)) {
                    363:                         $is_page = $mapres->is_page();
                    364:                     }
                    365:                     unless ($is_page) {
1.495     raeburn   366:                         $needs_upload = 1;
                    367:                     }
                    368:                 }
                    369:             }
1.493     raeburn   370:         } else {
                    371:             unless ($env{'request.state'} eq 'construct') {
                    372:                 my $navmap = Apache::lonnavmaps::navmap->new();
                    373:                 if (ref($navmap)) {
1.495     raeburn   374:                     my $mapres = $navmap->getResourceByUrl($map);
1.496     raeburn   375:                     my $is_page;
                    376:                     if (ref($mapres)) {
                    377:                         $is_page = $mapres->is_page();
                    378:                     }
                    379:                     unless ($is_page) {
1.495     raeburn   380:                         my $res = $navmap->getBySymb($symb);
                    381:                         if (ref($res)) {
                    382:                             my $partlist = $res->parts();
                    383:                             if (ref($partlist) eq 'ARRAY') {
                    384:                                 foreach my $part (@{$partlist}) {
                    385:                                     my @types = $res->responseType($part);
                    386:                                     my @ids = $res->responseIds($part);
                    387:                                     for (my $i=0; $i < scalar(@ids); $i++) {
                    388:                                         if ($types[$i] eq 'essay') {
                    389:                                             my $partid = $part.'_'.$ids[$i];
                    390:                                             if (&Apache::lonnet::EXT("resource.$partid.uploadedfiletypes") ne '') {
                    391:                                                 $needs_upload = 1;
                    392:                                                 last;
                    393:                                             }
1.493     raeburn   394:                                         }
                    395:                                     }
                    396:                                 }
1.495     raeburn   397:                             } 
                    398:                         }
1.493     raeburn   399:                     }
                    400:                 }
                    401:             }
                    402:         }
1.495     raeburn   403:         if ($needs_upload) {
                    404:             $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
                    405:         }
1.478     raeburn   406:     }
1.425     raeburn   407: 
1.344     albertel  408:     my %body_args;
                    409:     if (defined($found{'html'})) {
                    410: 	$body_args{'skip_phases'}{'head'}=1;
                    411:     } else {
1.343     albertel  412: 	
1.345     albertel  413: 	$extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343     albertel  414: 
1.379     albertel  415: 	$extra_head .= &Apache::londefdef::generate_css_links();
                    416: 
1.384     albertel  417: 	if ($env{'request.state'} eq 'construct') {
1.343     albertel  418: 	    $extra_head.=&Apache::edit::js_change_detection().
                    419: 		"<script type=\"text/javascript\">\n".
                    420: 		"if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
                    421: 		&Apache::loncommon::browser_and_searcher_javascript().
                    422:                 "\n</script>\n";
1.525     raeburn   423:             if ($target eq 'edit') {
                    424:                 $extra_head .= &Apache::edit::js_update_linknum();
                    425:             }
1.343     albertel  426: 	}
1.159     albertel  427:     }
1.343     albertel  428: 
1.446     bisitz    429:     my $pageheader = '';
1.344     albertel  430:     if (defined($found{'body'})) {
                    431: 	$body_args{'skip_phases'}{'body'}=1;
                    432:     } elsif (!defined($found{'body'}) 
                    433: 	     && $env{'request.state'} eq 'construct') {
1.343     albertel  434: 	if ($target eq 'web' || $target eq 'edit') {
1.513     raeburn   435:         # Breadcrumbs for Authoring Space
1.450     bisitz    436:         &Apache::lonhtmlcommon::clear_breadcrumbs();
                    437:         &Apache::lonhtmlcommon::add_breadcrumb({
1.513     raeburn   438:             'text'  => 'Authoring Space',
1.497     raeburn   439:             'href'  => &Apache::loncommon::authorspace($env{'request.uri'}),
1.450     bisitz    440:         });
1.460     droeschl  441:         # breadcrumbs (and tools) will be created 
                    442:         # in start_page->bodytag->innerregister
                    443: 
1.450     bisitz    444: # FIXME Where are we?
                    445: #        &Apache::lonhtmlcommon::add_breadcrumb({
                    446: #            'text'  => 'Problem Editing', # 'Problem Testing'
                    447: #            'href'  => '',
                    448: #        });
1.460     droeschl  449:         $pageheader =&Apache::loncommon::head_subbox(
1.446     bisitz    450:                 &Apache::loncommon::CSTR_pageheader());
1.297     albertel  451: 	}
1.272     albertel  452:     } elsif (!defined($found{'body'})) {
1.343     albertel  453: 	my %add_entries;
1.159     albertel  454: 	my $background=&Apache::lonxml::get_param('background',$parstack,
                    455: 						  $safeeval);
1.343     albertel  456: 	if ($background ne '' ) {
                    457: 	    $add_entries{'background'} = $background;
                    458: 	}
1.344     albertel  459: 
1.290     albertel  460: 	my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
                    461: 					       $safeeval);
1.446     bisitz    462:         if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
1.344     albertel  463: 
1.446     bisitz    464:         $body_args{'bgcolor'}        = $bgcolor;
                    465:         # $body_args{'no_title'}       = 1;
                    466:         $body_args{'force_register'} = 1;
                    467:         $body_args{'add_entries'}    = \%add_entries;
1.466     droeschl  468:         if ( $env{'request.state'} eq   'construct') {
1.446     bisitz    469:             $body_args{'only_body'}  = 1;
1.518     raeburn   470:         } elsif ($target eq 'web') {
                    471:             $body_args{'print_suppress'} = 1;
1.446     bisitz    472:         }
1.344     albertel  473:     }
1.365     albertel  474:     $body_args{'no_auto_mt_title'} = 1;
1.344     albertel  475:     my $page_start = &Apache::loncommon::start_page($name,$extra_head,
                    476: 						    \%body_args);
1.446     bisitz    477:     $page_start .= $pageheader;
1.462     raeburn   478:     if (!defined($found{'body'}) 
                    479: 	&& $env{'request.state'} ne 'construct'
                    480: 	&& ($target eq 'web' || $target eq 'webgrade')) {
                    481: 
                    482: 	my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
                    483:         if ($symb eq '' && !$publicuser) {
                    484:             $page_start .= '<p class="LC_info">'
                    485:                           .&mt('Browsing resource, all submissions are temporary.')
                    486:                           .'</p>';
1.457     bisitz    487:         }
1.344     albertel  488:     }
                    489: 
1.409     albertel  490:     if (!defined($found{'body'}) && $env{'request.state'} ne 'construct') {
1.343     albertel  491: 	$page_start .= &Apache::lonxml::message_location();
1.159     albertel  492:     }
                    493:     my $form_tag_start;
                    494:     if (!defined($found{'form'})) {
1.337     albertel  495: 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.465     raeburn   496: 	my $uri = &Apache::loncommon::inhibit_menu_check(
1.455     droeschl  497:                 &Apache::lonenc::check_encrypt($env{'request.uri'}));
1.464     raeburn   498:         $uri = &HTML::Entities::encode($uri,'<>&"');
1.327     albertel  499: 	$form_tag_start.=$uri.'" ';
                    500: 	if ($target eq 'edit') {
                    501: 	    $form_tag_start.=&Apache::edit::form_change_detection();
                    502: 	}
1.493     raeburn   503:         my ($symb,$courseid,$udom,$uname)=&Apache::lonnet::whichuser();
                    504:         my ($path,$multiresp) = 
                    505:             &Apache::loncommon::get_turnedin_filepath($symb,$uname,$udom);
1.495     raeburn   506:         if (($is_task) || ($needs_upload)) {
                    507:             $form_tag_start .= ' onsubmit="return file_submission_check(this,'."'$path','$multiresp'".');"';
1.478     raeburn   508:         }
1.368     albertel  509: 	$form_tag_start.='>'."\n";
1.355     albertel  510: 
                    511: 	if ($symb =~ /\S/) {
                    512: 	    $symb=
                    513: 		&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
                    514: 	    $form_tag_start.=
1.368     albertel  515: 		"\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355     albertel  516: 	}
1.159     albertel  517:     }
1.343     albertel  518:     return ($page_start,$form_tag_start);
1.105     albertel  519: }
                    520: 
1.141     matthew   521: #use Time::HiRes();
1.105     albertel  522: sub get_resource_name {
1.159     albertel  523:     my ($parstack,$safeeval)=@_;
1.388     foxr      524:     my $name;
1.204     albertel  525:     if (defined($Apache::lonhomework::name)) {
1.388     foxr      526: 	$name = $Apache::lonhomework::name;
                    527:     } else {
                    528: 	my ($symb)=&Apache::lonnet::whichuser();
1.392     albertel  529: 	$name=&Apache::lonnet::gettitle($symb);
1.388     foxr      530: 	if ($name eq '') {
                    531: 	    $name=&Apache::lonnet::EXT('resource.title');
                    532: 	    if ($name eq 'con_lost') { $name = ''; }
                    533: 	}
                    534: 	if ($name!~/\S+/) {
                    535: 	    $name=$env{'request.uri'};
                    536: 	    $name=~s-.*/([^/]+)$-$1-;
                    537: 	}
                    538: 	# The name has had html tags escaped:
                    539:        
                    540: 	$name=~s/&lt;/</gs;
                    541: 	$name=~s/&gt;/>/gs;
                    542: 
                    543: 	$Apache::lonhomework::name=$name;
1.204     albertel  544:     }
1.159     albertel  545:     return $name;
1.105     albertel  546: }
                    547: 
                    548: sub setup_rndseed {
1.479     raeburn   549:     my ($safeeval,$target)=@_;
1.367     albertel  550:     my ($symb)=&Apache::lonnet::whichuser();
1.479     raeburn   551:     my ($questiontype,$set_safespace,$rndseed);
                    552:     if ($target eq 'analyze') {
                    553:         $questiontype = $env{'form.grade_questiontype'};
                    554:     }
                    555:     unless (defined($questiontype)) {
                    556:         $questiontype = $Apache::lonhomework::type;
                    557:     }
1.333     albertel  558:     if ($env{'request.state'} eq "construct" 
                    559: 	|| $symb eq '' 
                    560: 	|| $Apache::lonhomework::type eq 'practice'
                    561: 	|| $Apache::lonhomework::history{'resource.CODE'}) {
1.316     www       562: 	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317     albertel  563: 						['rndseed']);
1.284     albertel  564: 	$rndseed=$env{'form.rndseed'};
1.159     albertel  565: 	if (!$rndseed) {
1.162     albertel  566: 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
                    567: 	    if (!$rndseed) {
                    568: 		$rndseed=time;
                    569: 	    }
1.284     albertel  570: 	    $env{'form.rndseed'}=$rndseed;
1.162     albertel  571: 	}
1.479     raeburn   572:         if (($env{'request.state'} eq "construct") && 
                    573:             ($Apache::lonhomework::type eq 'randomizetry')) {
                    574:             my $tries = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.tries"};
                    575:             if ($tries) {
                    576:                 $rndseed += $tries;
                    577:             }
1.480     raeburn   578:             $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.479     raeburn   579:         }
1.374     albertel  580: 	if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    581: 	      && $env{'form.submitted'} eq 'yes')  ||
1.284     albertel  582: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190     albertel  583: 	    srand(time);
                    584: 	    $rndseed=int(rand(2100000000));
1.284     albertel  585: 	    $env{'form.rndseed'}=$rndseed;
                    586: 	    delete($env{'form.resetdata'});
                    587: 	    delete($env{'form.newrandomization'});
1.159     albertel  588: 	}
1.488     www       589:         $rndseed=~s/\,/\:/g;
                    590:         $rndseed=~s/[^\w\d\:\-]//g;
1.489     www       591: 	if (defined($rndseed)) {
                    592:             my ($c1,$c2)=split(/\:/,$rndseed);
                    593:             unless ($c2) { $c2=0; }
                    594:             unless (($c1==int($c1)) && ($c2==int($c2))) {
                    595: 	       $rndseed=join(':',&Apache::lonnet::digest($rndseed));
                    596:             }
1.187     albertel  597:         }
1.247     albertel  598:         if ($Apache::lonhomework::history{'resource.CODE'}) {
                    599: 	   $rndseed=&Apache::lonnet::rndseed();
                    600: 	}
1.479     raeburn   601:         $set_safespace = 1;
                    602:     } elsif ($questiontype eq 'randomizetry') {
                    603:         if ($target eq 'analyze') {
                    604:             if (defined($env{'form.grade_rndseed'})) {
                    605:                 $rndseed = $env{'form.grade_rndseed'};
                    606:             }
                    607:         }
                    608:         unless (($target eq 'analyze') && (defined($rndseed))) {
                    609:             $rndseed=&Apache::lonnet::rndseed();
                    610:             my $curr_try = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.tries"};
                    611:             if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
                    612:                 $curr_try ++;
                    613:             }
                    614:             if ($rndseed =~/^(\d+)[,:](\d+)$/) {
                    615:                 $rndseed = $1;
                    616:             }
                    617:             if ($curr_try) {
                    618:                 my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
                    619:                 if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
                    620:                     my $inc = int(($curr_try-1)/$reqtries);
                    621:                     $rndseed += $inc;
                    622:                 } else {
                    623:                     $rndseed += $curr_try;
                    624:                 }
                    625:             }
                    626:         }
                    627:         $set_safespace = 1;
                    628:     }
                    629:     if ($set_safespace) {
                    630:         if ($safeeval) {
                    631:             &Apache::lonxml::debug("Setting rndseed to $rndseed");
                    632:             &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
                    633:         }
                    634:     }
                    635:     unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
                    636:         $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159     albertel  637:     }
                    638:     return $rndseed;
1.105     albertel  639: }
                    640: 
1.268     albertel  641: sub remember_problem_state {
                    642:     return '
1.284     albertel  643:        <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
                    644:        <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
                    645:        <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268     albertel  646: }
                    647: 
1.487     www       648: sub problem_edit_action_button {
                    649:     my ($name,$action,$accesskey,$text,$flag)=@_;
                    650:     my $actionscript="setmode(this.form,'$action')";
                    651:     return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
                    652:            ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
                    653: }
                    654: 
1.423     www       655: sub problem_edit_buttons {
1.487     www       656:    my ($mode)=@_;
                    657: # Buttons that do not save
                    658:    my $result='<div class="LC_edit_problem_discards">'.
                    659:               &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
                    660:    if ($mode eq 'editxml') {
                    661:        $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
                    662:        $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
                    663:        $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
                    664:    } else {
                    665:        $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
                    666:        $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
                    667:    }
                    668:    $result.="\n</div>";
                    669: # Buttons that save
                    670:    $result.='<div class="LC_edit_problem_saves">';
                    671:    if ($mode eq 'editxml') {
                    672:        $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
                    673:        $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
                    674:    } else {
                    675:        $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
                    676:        $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
                    677:    }
                    678:    $result.="\n</div>\n";
                    679:    return $result;
1.423     www       680: }
                    681: 
1.527   ! golterma  682: sub insert_menu_datastructure {
        !           683: 
        !           684: 	my $template_menu = &template_dropdown_datastructure();
        !           685: 	my $responseblock_menu = &responseblock_dropdown_datastructure();
        !           686: 	my $conditional_scripting = &conditional_scripting_datastructure();
        !           687: 	my $misc = &misc_datastructure();
        !           688: 	
        !           689: 	my @menu = ($template_menu, $responseblock_menu, $conditional_scripting, $misc);
        !           690: 	return \@menu;
        !           691: 
        !           692: }
        !           693: 
        !           694: sub template_dropdown_datastructure {
        !           695:     # gathering the all templates and their path, title, category and help topic
        !           696:     my @templates = &Apache::lonhomework::get_template_list('problem');
        !           697:     # template category => title
        !           698:     my %tmplthash = ();
        !           699:     # template title => path
        !           700:     my %tmpltcontent = ();
        !           701: 	
        !           702:     foreach my $template (@templates){
        !           703:         # put in hash if the template is not empty
        !           704:         unless ($template->[1] eq ''){
        !           705:             push(@{$tmplthash{$template->[2]}}, $template->[1]);
        !           706:             push(@{$tmpltcontent{$template->[1]}},$template->[0]);
        !           707:         }
        !           708:     }
        !           709: 
        !           710: 	my $catList = [];
        !           711:     foreach my $cat (sort keys %tmplthash) {
        !           712: 		my $catItems = [];
        !           713:         foreach my $title (sort @{$tmplthash{$cat}}) {
        !           714:             my $path = $tmpltcontent{$title}->[0];
        !           715:             my $code;
        !           716:             open(FH, "<$path");
        !           717:             while(<FH>){
        !           718:                 $code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
        !           719:             }
        !           720:             close(FH);
        !           721: 
        !           722: 			if ($code ne '') {				
        !           723: 				my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code)) . '\')';
        !           724: 				my $currItem = [$href, $title, undef];
        !           725: 				push @{$catItems}, $currItem;
        !           726: 			}
        !           727:         }
        !           728: 		push @{$catList}, [$catItems, $cat, undef];
        !           729:     }
        !           730: 
        !           731: 	my $templDropdown = [$catList, &mt("Complete Problem Templates"), undef];
        !           732:     return $templDropdown;
        !           733: }
        !           734: 
        !           735: sub responseblock_dropdown_datastructure {
        !           736: 	
        !           737: 	my $mathCat = [
        !           738: 		[
        !           739: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
        !           740: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
        !           741: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
        !           742: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
        !           743: 		], 
        !           744: 		&mt("Math"), 
        !           745: 		undef
        !           746: 	];
        !           747: 
        !           748: 	my $miscCat = [		
        !           749: 		[
        !           750:             ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
        !           751:             ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
        !           752:             ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
        !           753:             ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Response"), undef],
        !           754:             ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N Statement"), undef],
        !           755:             ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Optionresponse"), undef], 
        !           756: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
        !           757: 		],
        !           758: 		&mt("Misc"),
        !           759: 		undef
        !           760: 	];
        !           761: 
        !           762: 	my $chemCat = [
        !           763: 		[
        !           764: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
        !           765: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Structure"), undef]
        !           766: 		],
        !           767: 		&mt("Chemical"),
        !           768: 		undef
        !           769: 	];
        !           770: 
        !           771: 	my $textCat = [
        !           772: 		[
        !           773: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
        !           774: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
        !           775: 		],
        !           776: 		&mt("Text"),
        !           777: 		undef
        !           778: 	];
        !           779: 
        !           780: 	my $cats = [[$mathCat, $miscCat, $chemCat, $textCat], &mt("Response Types"), undef];
        !           781: 	return $cats;
        !           782: }
        !           783: 
        !           784: 
        !           785: sub conditional_scripting_datastructure {
        !           786: # TODO: corresponding routines should be used for the javascript:insertText parts
        !           787: # instead of the placeholder routine default_xml_tag with the tags
        !           788: # e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
        !           789: # returns the corresponding content for this case
        !           790: 
        !           791: #TODO translated is currently temporarily here, another solution should be found where the
        !           792: # needed string can be retrieved
        !           793: 
        !           794: 	my $translatedTag = '
        !           795: <translated>
        !           796:     <lang which="en"></lang>
        !           797:     <lang which="default"></lang>
        !           798: </translated>';
        !           799: 
        !           800: 	my $cat = [
        !           801: 		[
        !           802: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Tag"), undef],
        !           803: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
        !           804: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Block"), undef],
        !           805: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
        !           806: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
        !           807: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
        !           808: 		],
        !           809: 		&mt("Contitional Scripting"),
        !           810: 		undef
        !           811: 	];
        !           812: 
        !           813: 	return $cat;
        !           814: }
        !           815: 
        !           816: sub misc_datastructure {
        !           817: 	
        !           818: 	my $graphicalCat = [
        !           819: 		[
        !           820: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
        !           821: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
        !           822: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef]
        !           823: 		],
        !           824: 		"Graphical",
        !           825: 		undef
        !           826: 	];
        !           827: 
        !           828: 	my $advancedCat = [
        !           829: 		[
        !           830: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
        !           831: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
        !           832: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
        !           833: 			["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef]
        !           834: 		],
        !           835: 		"advanced",
        !           836: 		undef
        !           837: 	];
        !           838: 	
        !           839: 	my $cats = [[$graphicalCat, $advancedCat], &mt("misc"), undef];
        !           840: 	return $cats;
        !           841: }
        !           842: 
        !           843: # helper routine for the datastructure building subroutines
        !           844: sub default_xml_tag {
        !           845: 	my ($tag) = @_;
        !           846: 	return "\n<$tag></$tag>";
        !           847: }
        !           848: 
        !           849: 
        !           850: sub helpmenu_datastructure {
        !           851: 
        !           852: 	my $width = 500;
        !           853: 	my $height = 600;
        !           854: 
        !           855: 	my $helpers = [
        !           856: 		['Problem_LON-CAPA_Functions', &mt('Script Functions')],
        !           857: 		['Greek_Symbols', &mt('Greek Symbols')],
        !           858:  		['Other_Symbols', &mt('Other Symbols')],
        !           859: 		['Authoring_Output_Tags', &mt('Output Tags')],
        !           860: 		['Authoring_Multilingual_Problems', 
        !           861: 			&mt('How to create problems in different languages')]
        !           862: 	];
        !           863: 
        !           864: 	my $help_structure = [];
        !           865: 
        !           866: 	foreach my $count (0..(scalar(@{$helpers})-1)) {
        !           867: 		my $filename = $helpers->[$count]->[0];
        !           868: 		my $title = $helpers->[$count]->[1];
        !           869: 		my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename.hlp',$width,$height,'yes');");
        !           870: 		push @{$help_structure}, [$href, $title, undef];
        !           871: 	}
        !           872: 
        !           873: 	return $help_structure;
        !           874: }
        !           875: 
        !           876: # we need substitution to not break javascript code
        !           877: sub convert_for_js {
        !           878:     my $return = shift;
        !           879:         $return =~ s|script|ESCAPEDSCRIPT|g;
        !           880:         $return =~ s|\n|\\r\\n|g;
        !           881:         $return =~ s|'|\\'|g;
        !           882: 		$return =~ s|&#39;|\\&#39;|g;
        !           883:     return $return;
        !           884: }
        !           885: 
1.423     www       886: sub problem_edit_header {
1.527   ! golterma  887:     my ($mode)=@_;
        !           888:     my $return = '<input type="hidden" name="submitted" value="edit" />'.
1.487     www       889: 	&remember_problem_state('edit').'
1.527   ! golterma  890:         <div class="LC_edit_problem_header">
        !           891:         <div class="LC_edit_problem_header_title">
        !           892:         '.&mt('Problem Editing').$mode.&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
        !           893:         </div><div class="LC_edit_actionbar" id="actionbar">'.
        !           894:         '<input type="hidden" name="problemmode" value="saveedit" />'.
        !           895:         &problem_edit_buttons();
        !           896: 
        !           897:     $return.='<hr style="clear:both;visibility:hidden;" />
        !           898:     </div></div>'
        !           899:     .&Apache::lonxml::message_location();
        !           900:     $return .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined.css" />
        !           901:     <script type="text/javascript" src="/adm/codemirror/codemirror-compressed-colorful.js"></script>';
        !           902: 
        !           903:     $return .= '<script type="text/javascript" src="/adm/jQuery/addons/jquery-scrolltofixed.js"></script>
        !           904:         <script type="text/javascript">
        !           905:             // unless internet explorer
        !           906:             if (!(window.navigator.appName == "Microsoft Internet Explorer" && (document.documentMode || document.compatMode))){
        !           907:                 $(document).ready(
        !           908:                     function() {
        !           909:                         $(\'.LC_edit_actionbar\').scrollToFixed(
        !           910:                             {
        !           911:                                 fixed: function(){
        !           912:                                     $(this).find(\'.LC_edit_actionbar\').css(\'height\', \'31px\');
        !           913:                                 }
        !           914:                             }
        !           915:                         );
        !           916:                     }
        !           917:                 );
        !           918:             }
        !           919:         </script>
        !           920:         <table id="LC_edit_problem_colorful" border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
        !           921:     return $return;
1.105     albertel  922: }
                    923: 
                    924: sub problem_edit_footer {
1.527   ! golterma  925:     my $resource = $env{'request.ambiguous'};
1.412     albertel  926:     return '</td></tr></table><br />
                    927: <div class="LC_edit_problem_footer">
1.453     bisitz    928:   <hr />'.
1.423     www       929: &problem_edit_buttons().'
1.459     bisitz    930:   <hr style="clear:both;" />
1.527   ! golterma  931:   <script type="text/javascript">
        !           932:       restoreState("'.$resource.'");
        !           933:       restoreScrollPosition("'.$resource.'");
        !           934:   </script>
1.412     albertel  935: </div>
                    936: '.
1.342     albertel  937:     "\n</form>\n".&Apache::loncommon::end_page();
1.105     albertel  938: }
                    939: 
1.235     albertel  940: sub option {
                    941:     my ($value,$name) = @_;
                    942:     my $result ="<option value='".$value."' ";
1.284     albertel  943:     if ($env{'form.'.$name} eq $value) {
1.235     albertel  944: 	$result.=" selected='on' ";
                    945:     }
                    946:     $result.='>';
                    947:     return $result;
                    948: }
                    949: 
1.105     albertel  950: sub problem_web_to_edit_header {
1.159     albertel  951:     my ($rndseed)=@_;
1.406     albertel  952:     my $result .= '<div class="LC_edit_problem_header">';
                    953: 
                    954:     if (!$Apache::lonhomework::parsing_a_task) {
                    955: 	$result .= 
                    956: 	    '<div class="LC_edit_problem_header_title">'.
                    957: 	    &mt('Problem Testing').
                    958: 	    &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
                    959: 	    '</div>';
                    960:     } else {
                    961: 	$result .= 
                    962: 	    '<div class="LC_edit_problem_header_title">'.
                    963: 	    &mt('Task Testing').
                    964: 	    '</div>';
                    965:     }
                    966:     
1.315     albertel  967:     my $show_all_foils_text = 
                    968: 	($Apache::lonhomework::parsing_a_task) ?
1.452     bisitz    969: 	&mt('Show All Instances')
                    970: 	: &mt('Show All Foils');
1.315     albertel  971: 
1.452     bisitz    972:     my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
                    973:                  .'<input type="checkbox" name="showallfoils"';
1.440     bisitz    974:     if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452     bisitz    975:     $show_all.= ' /> '.$show_all_foils_text
                    976:                .'</label></span>';
1.406     albertel  977: 
                    978: 
1.384     albertel  979: 
1.406     albertel  980:     $result .= '<div class="LC_edit_problem_header_status_row">';
1.313     albertel  981:     if (!$Apache::lonhomework::parsing_a_task) {
                    982: 	$result.="
1.406     albertel  983: <div class='LC_edit_problem_header_row1'>
                    984: <span class=\"LC_nobreak\">
1.405     albertel  985: ".&mt("Problem Status:")."
1.235     albertel  986: <select name='problemstate'>
1.270     albertel  987:   <option value=''></option>
1.235     albertel  988:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    989:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    990:   ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
                    991:   ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
                    992:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
                    993: </select>
1.406     albertel  994: </span>
                    995: <span class=\"LC_nobreak\">
1.405     albertel  996: ".&mt("Problem Type:")."
1.235     albertel  997: <select name='problemtype'>
1.270     albertel  998:   <option value=''></option>
1.509     bisitz    999:   ".&option('exam'   ,'problemtype').&mt("Bubblesheet Exam Problem")."</option>
1.428     raeburn  1000:   ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242     albertel 1001:   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465     raeburn  1002:   ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
                   1003:   ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
                   1004:   ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428     raeburn  1005:   ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479     raeburn  1006:   ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235     albertel 1007: </select>
1.406     albertel 1008: </span>
                   1009: $show_all
                   1010: </div>
                   1011: <div class='LC_edit_problem_header_row2'>
                   1012: <span class=\"LC_nobreak\">
1.405     albertel 1013: ".&mt("Feedback Mode:")."
1.235     albertel 1014: <select name='problemstatus'>
                   1015:   <option value=''></option>
1.242     albertel 1016:   ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.517     bisitz   1017:   ".&option('no', 'problemstatus').&mt("Don't Show Incorrect/Correct Feedback")."</option>
1.405     albertel 1018:   ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235     albertel 1019: </select>
1.406     albertel 1020: </span>
                   1021: ";
                   1022: 
1.376     albertel 1023:     } elsif ($Apache::lonhomework::parsing_a_task) {
                   1024: 	$result.="
1.406     albertel 1025: <div class='LC_edit_problem_header_row1'>
                   1026: <span class=\"LC_nobreak\">
1.405     albertel 1027: ".&mt("Problem Status:")."
1.376     albertel 1028: <select name='problemstate'>
                   1029:   <option value=''></option>
                   1030:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                   1031:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                   1032:   ".&option('WEB_GRADE'            ,'problemstate').&mt("Criteria Grading")."</option>
                   1033:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Feedback")."</option>
                   1034: </select>
1.406     albertel 1035: </span>
                   1036: $show_all
                   1037: ";
                   1038:     }
                   1039:     $result.='
                   1040:        <span class="LC_nobreak">
                   1041:        '.&mt('Apply style file: ').'
                   1042:          <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
                   1043:          <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
                   1044:        </span>
1.422     www      1045:      </div>
                   1046:      <div class="LC_edit_problem_header_row1">'.
                   1047:        &Apache::lonxml::renderingoptions().'
1.406     albertel 1048:      </div>
                   1049:      <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
                   1050:      <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
                   1051:      <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
                   1052:    </div>
1.453     bisitz   1053:    <hr />
1.406     albertel 1054:    <div class="LC_edit_problem_header_randomize_row">
                   1055:      <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
                   1056:      <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488     www      1057:      <input type="text" name="rndseed" size="24" value="'.
1.406     albertel 1058: 	       $rndseed.'"
                   1059:              onchange="javascript:document.lonhomework.changerandseed.click()" />';
                   1060: 
                   1061:     if (!$Apache::lonhomework::parsing_a_task) {
                   1062: 	my $numtoanalyze=$env{'form.numtoanalyze'};
                   1063: 	if (!$numtoanalyze) { $numtoanalyze=20; }
1.408     albertel 1064: 	$result .= '<span class="LC_nobreak">'.
                   1065: 	    &mt('[_1] for [_2] versions.',
1.416     raeburn  1066: 		'<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419     bisitz   1067:                 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
                   1068:                ,'<input type="text" name="numtoanalyze" value="'.
1.408     albertel 1069: 		$numtoanalyze.'" size="5" />').
                   1070: 		&Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
                   1071: 		'</span>';
                   1072: 						    
1.313     albertel 1073:     }
1.406     albertel 1074: 
                   1075:     $result.='
                   1076:    </div>
1.453     bisitz   1077:    <hr />
1.447     bisitz   1078:    <div>';
1.416     raeburn  1079:     $result.='<input type="hidden" name="problemmode" value="view" />';
                   1080:     $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
                   1081:                'onclick="javascript:setmode(this.form,'."'edit'".')" />';
                   1082:     $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
                   1083:                'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408     albertel 1084:     $result.='
                   1085:    </div>
1.453     bisitz   1086:    <hr />
1.409     albertel 1087:    '.&Apache::lonxml::message_location().'
1.406     albertel 1088: </div>';
1.159     albertel 1089:     return $result;
1.48      albertel 1090: }
                   1091: 
1.65      albertel 1092: sub initialize_storage {
1.357     albertel 1093:     my ($given_symb) = @_;
1.353     albertel 1094:     undef(%Apache::lonhomework::results);
                   1095:     undef(%Apache::lonhomework::history);
1.357     albertel 1096:     my ($symb,$courseid,$domain,$name) = 
1.367     albertel 1097: 	&Apache::lonnet::whichuser($given_symb);
1.353     albertel 1098:     
                   1099:     # anonymous users (CODEd exams) have no data
                   1100:     if ($name eq 'anonymous' 
                   1101: 	&& !defined($domain)) {
                   1102: 	return;
                   1103:     }
                   1104: 
1.333     albertel 1105:     if ($env{'request.state'} eq 'construct' 
                   1106: 	|| $symb eq ''
                   1107: 	|| $Apache::lonhomework::type eq 'practice') {
                   1108: 	
                   1109: 	my $namespace = $symb || $env{'request.uri'};
                   1110: 	if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374     albertel 1111: 	    ($env{'form.resetdata'} eq &mt('New Problem Variation')
                   1112: 	     && $env{'form.submitted'} eq 'yes') ||
1.333     albertel 1113: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
                   1114: 	    &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
                   1115: 	    &Apache::lonxml::debug("Attempt reset");
                   1116: 	}
1.159     albertel 1117: 	%Apache::lonhomework::history=
1.333     albertel 1118: 	    &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.526     raeburn  1119: 	my ($temp)=keys(%Apache::lonhomework::history) ;
1.159     albertel 1120: 	&Apache::lonxml::debug("Return message of $temp");
                   1121:     } else {
                   1122: 	%Apache::lonhomework::history=
                   1123: 	    &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                   1124:     }
1.353     albertel 1125: 
1.159     albertel 1126:     #ignore error conditions
1.526     raeburn  1127:     my ($temp)=keys(%Apache::lonhomework::history);
1.159     albertel 1128:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65      albertel 1129: }
                   1130: 
1.435     jms      1131: =pod
                   1132: 
                   1133: =item finalize_storage()
                   1134: 
1.524     raeburn  1135: 	Stores away the result hash to a student's environment;
1.523     raeburn  1136: 	checks form.grade_ for specific values, otherwise stores
                   1137: 	to the running user's environment.
1.524     raeburn  1138: 
                   1139:         &check_correctness_changes() is called in two circumstances
                   1140:         in which the results hash is to be stored permanently, for
                   1141:         grading triggered by a student's submission, where feedback on
                   1142:         correctness is to be provided to the student. 
                   1143: 
                   1144:         1. Immediately prior to storing the results hash
                   1145: 
                   1146:         To handle the case where a student's submission (and award) were 
                   1147:         stored after history was retrieved in &initialize_storage(), e.g.,
                   1148:         if a student submitted answers in quick succession (e.g., from 
                   1149:         multiple tabs).  &Apache::inputtags::hidealldata() is called for
                   1150:         any parts with out-of-order storage (i.e., correct then incorrect,
                   1151:         where awarded >= 1 when correct).
                   1152: 
                   1153:         2. Immediately after storing the results hash
                   1154: 
                   1155:         To handle the case where lond on the student's homeserver returns
                   1156:         delay:N -- where N is the number of transactions between the last
                   1157:         retrieved in &initialize_storage() and the last stored immediately
                   1158:         before permanent storage of the current transaction via 
                   1159:         lond::store_handler().  &Apache::grades::makehidden() is called  
                   1160:         for any parts with out-of-order storage (i.e., correct then incorrect,
                   1161:         where awarded >= 1 when correct).
                   1162: 
                   1163: 	Will call &store_aggregates() to increment totals for attempts, 
                   1164:         students, and corrects, if running user has student role.
                   1165: 
1.435     jms      1166: =cut
                   1167: 
                   1168: 
1.65      albertel 1169: sub finalize_storage {
1.357     albertel 1170:     my ($given_symb) = @_;
1.159     albertel 1171:     my $result;
1.289     albertel 1172:     if (%Apache::lonhomework::results) {
1.323     albertel 1173: 	my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
                   1174: 	delete(@Apache::lonhomework::results{@remove});
1.357     albertel 1175: 	my ($symb,$courseid,$domain,$name) = 
1.367     albertel 1176: 	    &Apache::lonnet::whichuser($given_symb);
1.333     albertel 1177: 	if ($env{'request.state'} eq 'construct' 
                   1178: 	    || $symb eq ''
                   1179: 	    || $Apache::lonhomework::type eq 'practice') {
                   1180: 	    my $namespace = $symb || $env{'request.uri'};
1.284     albertel 1181: 	    $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159     albertel 1182: 	    $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333     albertel 1183: 					      $namespace,'',$domain,$name);
1.159     albertel 1184: 	    &Apache::lonxml::debug('Construct Store return message:'.$result);
                   1185: 	} else {
1.524     raeburn  1186:             my ($laststore,$checkedparts,@parts,%postcorrect);
                   1187:             if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
                   1188:                 (!$Apache::lonhomework::scantronmode) && (!defined($env{'form.grade_symb'})) &&
                   1189:                 (!defined($env{'form.grade_courseid'}))) {
                   1190:                 if ($Apache::lonhomework::history{'version'}) {
                   1191:                     $laststore = $Apache::lonhomework::history{'version'}.'='.
                   1192:                                  $Apache::lonhomework::history{'timestamp'};
                   1193:                 } else {
                   1194:                     $laststore = '0=0';
                   1195:                 }
                   1196:                 my %record = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                   1197:                 if ($record{'version'}) {
                   1198:                     my ($newversion,$oldversion,$oldtimestamp);
                   1199:                     if ($Apache::lonhomework::history{'version'}) {
                   1200:                         $oldversion = $Apache::lonhomework::history{'version'};
                   1201:                         $oldtimestamp = $Apache::lonhomework::history{'timestamp'};
                   1202:                     } else {
                   1203:                         $oldversion = 0;
                   1204:                         $oldtimestamp = 0;
                   1205:                     }
                   1206:                     if ($record{'version'} > $oldversion) {
                   1207:                         if ($record{'timestamp'} >= $oldtimestamp) {
                   1208:                             $laststore = $record{'version'}.'='.$record{'timestamp'};
                   1209:                             $newversion = $record{'version'} + 1;
                   1210:                             $checkedparts = 1;
                   1211:                             foreach my $key (keys(%Apache::lonhomework::results)) {
                   1212:                                 if ($key =~ /^resource\.([^\.]+)\.solved$/) {
                   1213:                                     my $part = $1;
                   1214:                                     if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
                   1215:                                         push(@parts,$part);
                   1216:                                     }
                   1217:                                 }
                   1218:                             }
                   1219:                             if (@parts) {
                   1220:                                 my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
                   1221:                                                                                \%record,\@parts,$newversion,
                   1222:                                                                                $oldversion);
                   1223:                                 if (@parts_to_hide) {
                   1224:                                     foreach my $part (@parts_to_hide) {
                   1225:                                         $postcorrect{$part} = 1;
                   1226:                                         &Apache::inputtags::hidealldata($part);
                   1227:                                     }
                   1228:                                 }
                   1229:                             }
                   1230:                         }
                   1231:                     }
                   1232:                 }
                   1233:             }
1.159     albertel 1234: 	    $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
1.524     raeburn  1235: 					    $symb,$courseid,$domain,$name,$laststore);
                   1236:             if ($result =~ /^delay\:(\d+)$/) {
                   1237:                 my $numtrans = $1;
                   1238:                 my ($oldversion) = split(/=/,$laststore);
                   1239:                 if ($numtrans) {
                   1240:                     my $newversion = $oldversion + 1 + $numtrans;
                   1241:                     my @possparts;
                   1242:                     if ($checkedparts) {
                   1243:                         foreach my $part (@parts) {
                   1244:                             unless ($postcorrect{$part}) {
                   1245:                                 push(@possparts,$part);
                   1246:                             }
                   1247:                         }
                   1248:                     } else {
                   1249:                         foreach my $key (keys(%Apache::lonhomework::results)) {
                   1250:                             if ($key =~ /^resource\.([^\.]+)\.solved$/) {
                   1251:                                 my $part = $1;
                   1252:                                 unless ($postcorrect{$part}) {
                   1253:                                     if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
                   1254:                                         push(@possparts,$part);
                   1255:                                     }
                   1256:                                 }
                   1257:                             }
                   1258:                         }
                   1259:                     }
                   1260:                     if (@possparts) {
                   1261:                         my %newrecord = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                   1262:                         my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
                   1263:                                                                        \%newrecord,\@possparts,$newversion,
                   1264:                                                                        $oldversion);
                   1265:                         if (@parts_to_hide) {
                   1266:                             my $partslist = join(',',@parts_to_hide);
                   1267:                             &Apache::grades::makehidden($newversion,$partslist,\%newrecord,$symb,$domain,$name,1);
                   1268:                         }
                   1269:                     }
                   1270:                 }
                   1271:             }
1.159     albertel 1272: 	    &Apache::lonxml::debug('Store return message:'.$result);
1.470     raeburn  1273:             &store_aggregates($symb,$courseid);
1.159     albertel 1274: 	}
1.323     albertel 1275:     } else {
                   1276: 	&Apache::lonxml::debug('Nothing to store');
1.67      albertel 1277:     }
1.159     albertel 1278:     return $result;
1.65      albertel 1279: }
                   1280: 
1.435     jms      1281: =pod
                   1282: 
1.524     raeburn  1283: =item check_correctness_changes()
                   1284: 
                   1285:         For all parts for which current results contain a solved status
                   1286:         of "incorrect_attempted", check if there was a transaction in which  
                   1287:         solved was set to "correct_by_student" in the time since the last 
                   1288:         transaction (retrieved when &initialize_storage() was called i.e., 
                   1289:         when &start_problem() was called), unless:
                   1290:         (a) questiontype parameter is set to survey or anonymous survey (+/- credit)
                   1291:         (b) problemstatus is set to no or no_feedback_ever
                   1292:         If such a transaction exists, and did not occur after "reset status" 
                   1293:         by a user with grading privileges, then the current transaction is an
                   1294:         example of an out-of-order transaction (i.e., incorrect occurring after
                   1295:         correct).  Accordingly, the current transaction should be hidden.
                   1296: 
                   1297: =cut
                   1298: 
                   1299: 
                   1300: sub check_correctness_changes {
                   1301:     my ($symb,$courseid,$domain,$name,$record,$parts,$newversion,$oldversion) = @_;
                   1302:     my @parts_to_hide;
                   1303:     unless ((ref($record) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
                   1304:         return @parts_to_hide;
                   1305:     }
                   1306:     if (@{$parts}) {
                   1307:         my $usec;
                   1308:         if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
                   1309:             ($env{'request.course.id'} eq $courseid)) {
                   1310:             $usec = $env{'request.course.sec'};
                   1311:         } else {
                   1312:             $usec = &Apache::lonnet::getsection($domain,$name,$courseid);
                   1313:         }
                   1314:         foreach my $id (@{$parts}) {
                   1315:             next if (($Apache::lonhomework::results{'resource.'.$id.'.type'} =~ /survey/) ||
                   1316:                      (&Apache::lonnet::EXT("resource.$id.problemstatus",$symb,
                   1317:                                            $domain,$name,$usec,undef,$courseid) =~ /^no/));
                   1318:             my $reset;
                   1319:             for (my $i=$newversion-1; $i>=$oldversion; $i--) {
                   1320:                 if (($record->{$i.':resource.'.$id.'.regrader'}) &&
                   1321:                     ($record->{$i.':resource.'.$id.'.tries'} eq '') &&
                   1322:                     ($record->{$i.':resource.'.$id.'.award'} eq '')) {
                   1323:                     $reset = 1;
                   1324:                 } elsif (($record->{$i.":resource.$id.solved"} eq 'correct_by_student') &&
                   1325:                          ($record->{$i.":resource.$id.awarded"} >= 1)) {
                   1326:                     unless ($reset) {
                   1327:                         push(@parts_to_hide,$id);
                   1328:                         last;
                   1329:                     }
                   1330:                 }
                   1331:             }
                   1332:         }
                   1333:     }
                   1334:     return @parts_to_hide;
                   1335: }
                   1336: 
                   1337: =pod
                   1338: 
1.435     jms      1339: item store_aggregates()
                   1340: 
                   1341: 	Sends hash of values to be incremented in nohist_resourcetracker.db
                   1342: 	for the course. Increments total number of attempts, unique students 
                   1343: 	and corrects for each part for an instance of a problem, as appropriate.
                   1344: 	
                   1345: =cut
                   1346: 
1.285     raeburn  1347: sub store_aggregates {
                   1348:     my ($symb,$courseid) = @_;
1.479     raeburn  1349:     my (%aggregate,%anoncounter,%randtrycounter);
1.286     albertel 1350:     my @parts;
1.288     albertel 1351:     my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   1352:     my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286     albertel 1353:     foreach my $key (keys(%Apache::lonhomework::results)) {
1.287     albertel 1354:         if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286     albertel 1355:             push(@parts, $1);
1.285     raeburn  1356:         }
                   1357:     }
1.286     albertel 1358:     foreach my $part (@parts) {
1.470     raeburn  1359:         if ($env{'request.role'} =~/^st/) {
                   1360:             if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
                   1361: 	        eq 'APPROX_ANS' ||
                   1362: 	        $Apache::lonhomework::results{'resource.'.$part.'.award'}
                   1363: 	        eq 'EXACT_ANS') {
                   1364:                 $aggregate{$symb."\0".$part."\0correct"} = 1;
                   1365:             }
                   1366:             if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
                   1367:                 $aggregate{$symb."\0".$part."\0users"} = 1;
                   1368:             } else {
                   1369:                 my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]); 
                   1370:                 if ($last_reset) {
                   1371:                     if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
                   1372:                         $aggregate{$symb."\0".$part."\0users"} = 1;
                   1373:                     }
                   1374:                 }
                   1375:             }
                   1376:             $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285     raeburn  1377:         }
1.470     raeburn  1378:         if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') || 
1.479     raeburn  1379:             ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
                   1380:             ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
                   1381:             if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
                   1382:                 $randtrycounter{$symb."\0".$part} = 1;
                   1383:             } else {
                   1384:                 $anoncounter{$symb."\0".$part} = 1;
                   1385:             }
1.470     raeburn  1386:             my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
                   1387:             if ($needsrelease) {   
                   1388:                 my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
                   1389:                 if ($curr_required eq '') {
1.471     raeburn  1390:                     &Apache::lonnet::update_released_required($needsrelease);
1.470     raeburn  1391:                 } else {
                   1392:                     my ($currmajor,$currminor) = split(/\./,$curr_required);
                   1393:                     my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
                   1394:                     if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471     raeburn  1395:                         &Apache::lonnet::update_released_required($needsrelease);
1.470     raeburn  1396:                     }
1.292     raeburn  1397:                 }
                   1398:             }
1.285     raeburn  1399:         }
                   1400:     }
1.526     raeburn  1401:     if (keys(%aggregate) > 0) {
1.289     albertel 1402: 	&Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292     raeburn  1403:                             $cdomain,$cname);
                   1404:     }
1.472     raeburn  1405:     if (keys(%anoncounter) > 0) {
1.481     raeburn  1406:         &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
                   1407:                               $cdomain,$cname);
1.472     raeburn  1408:     }
1.479     raeburn  1409:     if (keys(%randtrycounter) > 0) {
1.481     raeburn  1410:         &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
                   1411:                               $cdomain,$cname);
1.479     raeburn  1412:     }
1.292     raeburn  1413: }
1.289     albertel 1414: 
1.65      albertel 1415: sub checkout_msg {
1.211     albertel 1416:     my %lt=&Apache::lonlocal::texthash( 
                   1417: 		'resource'=>'The resource needs to be checked out',
                   1418: 		'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.',
                   1419:                 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
1.509     bisitz   1420:                 'checkout'=>'Check out Bubblesheet Exam for Viewing',
                   1421: 		'checkout?'=>'Check out Bubblesheet Exam?');
1.352     albertel 1422:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159     albertel 1423:     return (<<ENDCHECKOUT);
1.211     albertel 1424: <h2>$lt{'resource'}</h2>
                   1425:     <p>$lt{'id_expln'}</p>
1.449     bisitz   1426: <p class="LC_warning">$lt{'warning'}</p>
1.444     bisitz   1427: <form name="checkout" method="post" action="$uri">
1.91      albertel 1428: <input type="hidden" name="doescheckout" value="yes" />
1.514     bisitz   1429: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onclick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel 1430: </form>
                   1431: ENDCHECKOUT
                   1432: }
                   1433: 
1.252     albertel 1434: sub firstaccess_msg {
1.253     albertel 1435:     my ($time,$symb)=@_;
1.414     albertel 1436:     my $result;
                   1437:     my @interval=&Apache::lonnet::EXT("resource.0.interval");
                   1438:     if ($interval[1] eq 'map') {
                   1439: 	my ($map)=&Apache::lonnet::decode_symb($symb);
                   1440: 	my $foldertitle=&Apache::lonnet::gettitle($map);
                   1441:     
                   1442: 	&Apache::lonxml::debug("map is $map title is $foldertitle");
1.504     golterma 1443: 	$result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$foldertitle)."</h2>"
                   1444:                              .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
                   1445:                              ,$foldertitle,$time)."</p>";
1.414     albertel 1446:     } elsif ($interval[1] eq 'course') {
                   1447: 	my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.504     golterma 1448:         $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$course)."</h2>"
1.505     golterma 1449:                              .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1.504     golterma 1450:                              ,$course,$time)."</p>";
1.414     albertel 1451:     } else {
                   1452: 	my $title=&Apache::lonnet::gettitle($symb);
1.504     golterma 1453:         $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.',$title)."</h2>"
                   1454:                              .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
                   1455:                              ,$title,$time)."</p>";
1.414     albertel 1456:     }
1.352     albertel 1457:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418     bisitz   1458:     my $buttontext = &mt('Show Resource');
                   1459:     my $timertext = &mt('Start Timer?');
1.414     albertel 1460:     $result .= (<<ENDCHECKOUT);
1.444     bisitz   1461: <form name="markaccess" method="post" action="$uri">
1.252     albertel 1462: <input type="hidden" name="markaccess" value="yes" />
1.514     bisitz   1463: <input type="button" name="accessbutton" value="$buttontext" onclick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252     albertel 1464: </form>
                   1465: ENDCHECKOUT
1.414     albertel 1466:     return $result;
1.252     albertel 1467: }
                   1468: 
1.204     albertel 1469: sub init_problem_globals {
                   1470:     my ($type)=@_;
                   1471:     #initialize globals
1.308     foxr     1472:     #   For problems, we start out in part 0 (outside a <part> tag).
                   1473:     #   and part 0 is used to describe the main body of the <problem>
                   1474:     #
1.204     albertel 1475:     if ($type eq 'problem') {
                   1476: 	$Apache::inputtags::part='0';
                   1477: 	@Apache::inputtags::partlist=('0');
1.405     albertel 1478: 	&Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266     albertel 1479: 	$Apache::lonhomework::ignore_response_errors=0;
1.308     foxr     1480: 
1.266     albertel 1481:     } elsif ($type eq 'library') {
1.204     albertel 1482: 	$Apache::inputtags::part='';
                   1483: 	@Apache::inputtags::partlist=();
1.405     albertel 1484: 	&Apache::lonhomework::reset_show_problem_status();
1.266     albertel 1485: 	$Apache::lonhomework::ignore_response_errors=1;
1.308     foxr     1486: 
1.304     albertel 1487:     } elsif ($type eq 'Task') {
                   1488: 	$Apache::inputtags::part='0';
                   1489: 	@Apache::inputtags::partlist=('0');
1.405     albertel 1490: 	&Apache::lonhomework::reset_show_problem_status();
1.304     albertel 1491: 	$Apache::lonhomework::ignore_response_errors=1;
1.204     albertel 1492:     }
1.477     www      1493:     @Apache::functionplotresponse::callscripts=();
1.204     albertel 1494:     @Apache::inputtags::responselist = ();
                   1495:     @Apache::inputtags::importlist = ();
                   1496:     @Apache::inputtags::previous=();
                   1497:     @Apache::inputtags::previous_version=();
                   1498:     $Apache::structuretags::printanswer='No';
                   1499:     @Apache::structuretags::whileconds=();
                   1500:     @Apache::structuretags::whilebody=();
                   1501:     @Apache::structuretags::whileline=();
                   1502:     $Apache::lonhomework::scantronmode=0;
                   1503:     undef($Apache::lonhomework::name);
1.358     albertel 1504:     undef($Apache::lonhomework::default_type);
                   1505:     undef($Apache::lonhomework::type);
1.204     albertel 1506: }
                   1507: 
                   1508: sub reset_problem_globals {
                   1509:     my ($type)=@_;
                   1510:     undef(%Apache::lonhomework::history);
                   1511:     undef(%Apache::lonhomework::results);
                   1512:     undef($Apache::inputtags::part);
1.498     raeburn  1513:     if ($type eq 'Task') {
                   1514:         undef($Apache::inputtags::slot_name);
                   1515:     }
1.208     albertel 1516: #don't undef this, lonhomework.pm takes care of this, we use this to 
                   1517: #detect if we try to do 2 problems in one file
                   1518: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel 1519:     undef($Apache::lonhomework::name);
1.358     albertel 1520:     undef($Apache::lonhomework::default_type);
                   1521:     undef($Apache::lonhomework::type);
                   1522:     undef($Apache::lonhomework::scantronmode);
                   1523:     undef($Apache::lonhomework::ignore_response_errors);
1.477     www      1524:     undef(@Apache::functionplotresponse::callscripts);
1.405     albertel 1525:     &Apache::lonhomework::reset_show_problem_status();
1.204     albertel 1526: }
                   1527: 
1.241     albertel 1528: sub set_problem_state {
1.240     albertel 1529:     my ($part)=@_;
1.284     albertel 1530:     if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240     albertel 1531: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                   1532: 	    'correct_by_student';
                   1533:     }
                   1534: }
                   1535: 
1.241     albertel 1536: sub get_problem_status {
                   1537:     my ($part)=@_;
1.267     albertel 1538:     my $problem_status;
1.284     albertel 1539:     if ($env{'request.state'} eq 'construct' &&
                   1540: 	defined($env{'form.problemstatus'})) {
                   1541: 	$problem_status=$env{'form.problemstatus'};
1.267     albertel 1542:     } else {
                   1543: 	$problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                   1544: 	&Apache::lonxml::debug("problem status for $part is $problem_status");
1.284     albertel 1545: 	&Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241     albertel 1546:     }
                   1547:     return $problem_status;
                   1548: }
                   1549: 
1.9       albertel 1550: sub start_problem {
1.326     albertel 1551:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19      albertel 1552: 
1.311     foxr     1553:     # We'll use the redirection to fix up printing of duedates.
1.321     albertel 1554:     if (!$Apache::lonxml::metamode) {
                   1555: 	&Apache::lonxml::startredirection();
                   1556:     }
1.311     foxr     1557: 
1.308     foxr     1558:     # Problems don't nest and we don't allow more than one <problem> in
                   1559:     # a .problem file.
                   1560:     #
1.184     albertel 1561:     if ( $Apache::inputtags::part ne '' ||
                   1562: 	 $Apache::lonhomework::parsing_a_problem) {
                   1563: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
1.326     albertel 1564: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159     albertel 1565: 	return '';
                   1566:     }
1.184     albertel 1567: 
                   1568:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel 1569:     &init_problem_globals('problem');
1.166     albertel 1570: 
1.284     albertel 1571:     if (defined($env{'scantron.maxquest'})) {
1.166     albertel 1572: 	$Apache::lonhomework::scantronmode=1;
                   1573:     }
1.161     albertel 1574: 
1.159     albertel 1575:     if ($target ne 'analyze') {
1.415     raeburn  1576:         my $type = &Apache::lonnet::EXT('resource.0.type');
                   1577: 	$Apache::lonhomework::type=$type;
1.284     albertel 1578: 	if (($env{'request.state'} eq 'construct') &&
1.410     albertel 1579: 	    $env{'form.problemtype'} =~ /\S/) {
1.284     albertel 1580: 	    $Apache::lonhomework::type=$env{'form.problemtype'};
1.237     albertel 1581: 	}
1.332     albertel 1582: 	&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159     albertel 1583:     }
1.164     albertel 1584:     if ($Apache::lonhomework::type eq '' ) {
1.284     albertel 1585: 	my $uri=$env{'request.uri'};
1.159     albertel 1586: 	if ($uri=~/\.(\w+)$/) {
                   1587: 	    $Apache::lonhomework::type=$1;
                   1588: 	    &Apache::lonxml::debug("Using type of $1");
                   1589: 	} else {
                   1590: 	    $Apache::lonhomework::type='problem';
                   1591: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                   1592: 	}
1.87      albertel 1593:     }
1.301     albertel 1594:     $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58      www      1595: 
1.363     albertel 1596:     &initialize_storage();
1.389     albertel 1597:     if ($target ne 'analyze'
                   1598:        	&& $env{'request.state'} eq 'construct') {
                   1599: 	&set_problem_state('0');
                   1600:     }
                   1601: 
1.366     albertel 1602:     if ($target eq 'web') {
                   1603: 	&Apache::lonxml::debug(" grading history ");
                   1604: 	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
                   1605:     }
1.363     albertel 1606: 
1.159     albertel 1607:     #added vars to the scripting enviroment
1.213     albertel 1608:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248     albertel 1609:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel 1610:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1611:     my $status;
                   1612:     my $accessmsg;
1.508     raeburn  1613:     my $resource_due;
1.159     albertel 1614: 
1.343     albertel 1615:     my $name= &get_resource_name($parstack,$safeeval);
1.506     raeburn  1616:     my ($result,$form_tag_start,$slot_name,$slot);
                   1617: 
                   1618:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1619:         $target eq 'tex') {
                   1620:         if ($env{'form.markaccess'}) {
                   1621:             my @interval=&Apache::lonnet::EXT("resource.0.interval");
1.519     raeburn  1622:             &Apache::lonnet::set_first_access($interval[1],$interval[0]);
1.506     raeburn  1623:         }
                   1624: 
                   1625:         ($status,$accessmsg,$slot_name,$slot) =
                   1626:             &Apache::lonhomework::check_slot_access('0','problem');
                   1627:         push (@Apache::inputtags::status,$status);
                   1628:     }
                   1629: 
1.354     albertel 1630:     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
                   1631: 	|| $target eq 'edit') {
1.350     albertel 1632: 	($result,$form_tag_start) =
                   1633: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1634: 			$name);
                   1635:     }
                   1636: 
1.284     albertel 1637:     if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159     albertel 1638: 
1.479     raeburn  1639:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159     albertel 1640:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1641: 	$target eq 'tex') {
1.479     raeburn  1642: 
1.159     albertel 1643: 	#handle rand seed in construction space
1.479     raeburn  1644: 	my $rndseed=&setup_rndseed($safeeval,$target);
1.367     albertel 1645: 	my ($symb)=&Apache::lonnet::whichuser();
1.479     raeburn  1646: 
1.333     albertel 1647: 	if ($env{'request.state'} ne "construct" && 
                   1648: 	    ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162     albertel 1649: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.462     raeburn  1650: 		$rndseed.'" />'.
                   1651: 		    '<input type="submit" name="resetdata"
                   1652:                              value="'.&mt('New Problem Variation').'" />';
1.334     albertel 1653: 	    if (exists($env{'form.username'})) {
                   1654: 		$form_tag_start.=
1.164     albertel 1655: 		    '<input type="hidden" name="username"
1.284     albertel 1656:                              value="'.$env{'form.username'}.'" />';
1.334     albertel 1657: 	    }
1.462     raeburn  1658: 	    if ($env{'request.role.adv'}) {
                   1659: 		$form_tag_start.= ' <label class="LC_nobreak">'
                   1660:                          .'<input type="checkbox" name="showallfoils"';
                   1661: 		if (defined($env{'form.showallfoils'})) {
                   1662: 		    $form_tag_start.=' checked="checked"';
                   1663: 		}
                   1664:                 $form_tag_start.= ' /> '
                   1665:                                  .&mt('Show All Foils')
                   1666:                                  .'</label>';
                   1667: 	    }
1.417     www      1668:             if ($Apache::lonhomework::type eq 'practice') {
1.428     raeburn  1669:                 $form_tag_start.=&practice_problem_header();
1.417     www      1670:             }
1.462     raeburn  1671: 	    $form_tag_start.='<hr />';
1.479     raeburn  1672:         } elsif (($env{'request.state'} ne "construct") &&
                   1673:                  ($Apache::lonhomework::type eq 'randomizetry') &&
                   1674:                  ($status eq 'CAN_ANSWER')) {
                   1675:             my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
                   1676:             my $problemstatus = &get_problem_status($Apache::inputtags::part);
                   1677:             $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries);
                   1678:         }
1.324     albertel 1679: 
1.159     albertel 1680: 	my $expression='$external::datestatus="'.$status.'";';
                   1681: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                   1682: 	&Apache::run::run($expression,$safeeval);
                   1683: 	&Apache::lonxml::debug("Got $status");
1.324     albertel 1684: 
1.159     albertel 1685: 	if (( $status eq 'CLOSED' ) ||
                   1686: 	    ( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 1687: 	    ( $status eq 'NOT_YET_VIEWED') ||
1.159     albertel 1688: 	    ( $status eq 'BANNED') ||
1.216     albertel 1689: 	    ( $status eq 'UNAVAILABLE') ||
1.324     albertel 1690: 	    ( $status eq 'NOT_IN_A_SLOT') ||
1.499     raeburn  1691:             ( $status eq 'NOTRESERVABLE') ||
                   1692:             ( $status eq 'RESERVABLE') ||
                   1693:             ( $status eq 'RESERVABLE_LATER') ||
1.216     albertel 1694: 	    ( $status eq 'INVALID_ACCESS')) {
1.326     albertel 1695: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                   1696: 						       $style);
1.159     albertel 1697: 	    if ( $target eq "web" ) {
1.343     albertel 1698: 		my $msg;
1.159     albertel 1699: 		if ($status eq 'UNAVAILABLE') {
1.504     golterma 1700: 		    $msg.='<p class="LC_error">'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</p>';
1.441     raeburn  1701:                 } elsif ($status eq 'NOT_IN_A_SLOT') {
1.504     golterma 1702:                     $msg.='<p class="LC_warning">'.&mt('You are not currently signed up to work at this time and/or place.').'</p>';
1.499     raeburn  1703:                 } elsif (($status eq 'RESERVABLE') || ($status eq 'RESERVABLE_LATER') ||
                   1704:                          ($status eq 'NOTRESERVABLE')) {
1.504     golterma 1705:                     $msg.='<p class="LC_warning">'.&mt('Access requires reservation to work at specific time/place.').'</p>';
1.253     albertel 1706: 		} elsif ($status ne 'NOT_YET_VIEWED') {
1.504     golterma 1707: 		    $msg.='<p class="LC_warning">'.&mt('Not open to be viewed').'</p>';
1.499     raeburn  1708:                 }
1.216     albertel 1709: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393     www      1710: 		    $msg.=&mt('The problem ').$accessmsg;
1.159     albertel 1711: 		} elsif ($status eq 'UNCHECKEDOUT') {
1.343     albertel 1712: 		    $msg.=&checkout_msg();
1.252     albertel 1713: 		} elsif ($status eq 'NOT_YET_VIEWED') {
1.253     albertel 1714: 		    $msg.=&firstaccess_msg($accessmsg,$symb);
1.325     albertel 1715: 		} elsif ($status eq 'NOT_IN_A_SLOT') {
1.441     raeburn  1716: 		    $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.499     raeburn  1717:                 } elsif ($status eq 'RESERVABLE') {
                   1718:                     $msg.=&mt('Available to make a reservation.').' '.&mt('Reservation window closes [_1].',
                   1719:                               &Apache::lonnavmaps::timeToHumanString($accessmsg,'end')).
                   1720:                           '<br />'.
                   1721:                           &Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
                   1722:                 } elsif ($status eq 'RESERVABLE_LATER') {
                   1723:                     $msg.=&mt('Window to make a reservation will open [_1].',
                   1724:                               &Apache::lonnavmaps::timeToHumanString($accessmsg,'start'));
                   1725:                 } elsif ($status eq 'NOTRESERVABLE') {
                   1726:                     $msg.=&mt('Not available to make a reservation.');  
1.159     albertel 1727: 		}
                   1728: 		$result.=$msg.'<br />';
                   1729: 	    } elsif ($target eq 'tex') {
1.332     albertel 1730: 		my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
                   1731: 		                    : '\begin{minipage}{\textwidth}';
1.443     foxr     1732: 		$result.='\noindent \vskip 1 mm '.
1.332     albertel 1733: 		    $startminipage.'\vskip 0 mm';
1.159     albertel 1734: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel 1735: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel 1736: 		} else {
1.211     albertel 1737: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel 1738: 		}
                   1739: 	    }
1.324     albertel 1740: 	} elsif ($status eq 'NEEDS_CHECKIN') {
1.326     albertel 1741: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                   1742: 						       $style);
1.324     albertel 1743: 	    if ($target eq 'web') {
1.375     albertel 1744: 		$result .= 
                   1745: 		    &Apache::bridgetask::proctor_validation_screen($slot);
1.324     albertel 1746: 	    } elsif ($target eq 'grade') {
                   1747: 		&Apache::bridgetask::proctor_check_auth($slot_name,$slot,
                   1748: 							'problem');
                   1749: 	    }
1.159     albertel 1750: 	} elsif ($target eq 'web') {
1.508     raeburn  1751: 	    if ($status eq 'CAN_ANSWER') {
                   1752:                 $resource_due = &Apache::lonhomework::due_date(0, $env{'request.symb'});
                   1753:                 if ($slot_name ne '') {
                   1754:                     my $checked_in =
                   1755:                         $Apache::lonhomework::history{'resource.0.checkedin'};
                   1756:                     if ($checked_in eq '') {
                   1757:                         # unproctored slot access, self checkin
                   1758:                         &Apache::bridgetask::check_in('problem',undef,undef,
                   1759:                                                       $slot_name);
                   1760:                         $checked_in =
                   1761:                             $Apache::lonhomework::results{"resource.0.checkedin"};
                   1762:                     }
                   1763:                     if ((ref($slot) eq 'HASH') && ($checked_in ne '')) {
                   1764:                         if ($slot->{'starttime'} < time()) {
                   1765:                             if (!$resource_due) {
                   1766:                                 $resource_due = $slot->{'endtime'};
                   1767:                             } elsif ($slot->{'endtime'} < $resource_due) {
                   1768:                                 $resource_due = $slot->{'endtime'};
                   1769:                             }
                   1770:                         }
                   1771:                     }
                   1772:                 }
                   1773:                 if ($resource_due) {
                   1774:                     my $time_left = $resource_due - time();
                   1775:                     if ($resource_due && ($time_left > 0) && ($target eq 'web')) {
                   1776:                         $result .= &Apache::lonhtmlcommon::set_due_date($resource_due);
                   1777:                     }
                   1778:                 }
                   1779:             }
1.368     albertel 1780: 	    $result.="\n $form_tag_start \t".	
1.227     albertel 1781: 	      '<input type="hidden" name="submitted" value="yes" />';
                   1782: 	    # create a page header and exit
1.284     albertel 1783: 	    if ($env{'request.state'} eq "construct") {
                   1784: 		$result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428     raeburn  1785:                 if ($Apache::lonhomework::type eq 'practice') {
                   1786:                     $result.= '<input type="submit" name="resetdata" '.
                   1787:                               'value="'.&mt('New Problem Variation').'" />'.
                   1788:                               &practice_problem_header().'<hr />';
                   1789:                 }
1.227     albertel 1790: 	    }
                   1791: 	    # if we are viewing someone else preserve that info
1.284     albertel 1792: 	    if (defined $env{'form.grade_symb'}) {
1.227     albertel 1793: 		foreach my $field ('symb','courseid','domain','username') {
                   1794: 		    $result .= '<input type="hidden" name="grade_'.$field.
1.284     albertel 1795: 			'" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159     albertel 1796: 		}
1.479     raeburn  1797:                 foreach my $field ('trial','questiontype') {
                   1798:                     if ($env{"form.grade_$field"} ne '') {
                   1799:                         $result .= '<input type="hidden" name="grade_'.$field.
                   1800:                             '" value="'.$env{"form.grade_$field"}.'" />'."\n";
                   1801:                     }
                   1802:                 }
1.159     albertel 1803: 	    }
1.490     raeburn  1804:             if ($env{'form.grade_imsexport'}) {
                   1805:                 $result = '';
                   1806:             }
1.159     albertel 1807: 	} elsif ($target eq 'tex') {
1.319     foxr     1808: 	    $result .= 'INSERTTEXFRONTMATTERHERE';
1.500     foxr     1809: 	    $result .= &select_metadata_hyphenation();
                   1810: 	    
1.319     foxr     1811: 
1.99      sakharuk 1812: 	}
1.159     albertel 1813:     } elsif ($target eq 'edit') {
1.343     albertel 1814: 	$result .= $form_tag_start.&problem_edit_header();
1.226     albertel 1815: 	$Apache::lonxml::warnings_error_header=
                   1816: 	    &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 1817: 	my $temp=&Apache::edit::insertlist($target,$token);
                   1818: 	$result.=$temp;
                   1819:     } elsif ($target eq 'modified') {
                   1820: 	$result=$token->[4];
                   1821:     } else {
                   1822: 	# page_start returned a starting result, delete it if we don't need it
                   1823: 	$result = '';
1.99      sakharuk 1824:     }
1.159     albertel 1825:     return $result;
1.9       albertel 1826: }
                   1827: 
                   1828: sub end_problem {
1.159     albertel 1829:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321     albertel 1830:     my $result;
1.310     foxr     1831: 
1.321     albertel 1832:     if (!$Apache::lonxml::metamode) {
                   1833: 	$result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329     albertel 1834: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel 1835:     }
1.319     foxr     1836: 
                   1837:     if ($target eq 'tex') {
1.321     albertel 1838: 	# Figure out the front matter and replace the
                   1839: 	# INSERTTEXFRONTMATTERHERE in result with it.  note that we do
                   1840: 	# this in end_problem because whether or not we display due
                   1841: 	# dates depends on whether due dates have already been
                   1842: 	# displayed in the problem parts.
                   1843: 
1.319     foxr     1844: 	my $frontmatter   = '';
                   1845: 	my $startminipage = '';
                   1846: 	if (not $env{'form.problem_split'}=~/yes/) {
                   1847: 	    $startminipage = '\begin{minipage}{\textwidth}';
                   1848: 	}
                   1849: 	my $id = $Apache::inputtags::part;
                   1850: 	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
                   1851: 	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.526     raeburn  1852: 	my @packages = split(/,/,$packages);
1.319     foxr     1853: 	my $allow_print_points = 0;
                   1854: 	foreach my $partial_key (@packages) {
                   1855: 	    if ($partial_key=~m/^part_0$/) {
                   1856: 		$allow_print_points=1;
                   1857: 	    }
                   1858: 	}
                   1859: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   1860: 	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
                   1861: 	if (lc($env{'course.'.$env{'request.course.id'}.
                   1862: 			'.disableexampointprint'}) eq 'yes') {
                   1863: 	    $allow_print_points=0;
                   1864: 	}
                   1865: 	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443     foxr     1866: 	my $begin_doc=' \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
1.500     foxr     1867: 	&clear_required_languages();
1.319     foxr     1868: 	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
                   1869: 	    '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
                   1870: 	
                   1871: 	#  Figure out what the due date is and if we need to print
                   1872: 	#  it in the problem header.  We have been logging the
                   1873: 	#  last due date written to file. 
                   1874: 	
                   1875: 	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate"); 
                   1876: 	my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448     bisitz   1877:         my $duedate_text = &mt('Due date: [_1]'
                   1878:                               ,&Apache::lonlocal::locallocaltime($duetime));
1.319     foxr     1879: 	my $temp_file;
                   1880: 	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
                   1881: 	
                   1882: 	# Figure out what the last printed due date is or set it
                   1883: 	# to the epoch if no duedates have been printed.
                   1884: 	
                   1885: 	my $due_file_content = 0;      #   If the file does not yet exist, time is the epoch.
                   1886: 	if (-e $filename) {
                   1887: 	    $temp_file = Apache::File->new($filename);
                   1888: 	    my @due_file      = <$temp_file>;
                   1889: 	    $due_file_content = $due_file[$#due_file];
                   1890: 	    chomp $due_file_content;
                   1891: 	} 
                   1892: 	
                   1893: 	# We display the due date iff it is not the same as the last
                   1894: 	# duedate in problem header ($due_file_content), and
                   1895: 	# none of our parts displayed a duedate.
                   1896: 	#
                   1897: 	my $parts_with_displayduedate;
                   1898: 	if (defined $Apache::outputtags::showonce{'displayduedate'}) {
                   1899: 	    $parts_with_displayduedate = 
                   1900: 		scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
                   1901: 	} else {
                   1902: 	    $parts_with_displayduedate = 0;
                   1903: 	}
                   1904: 	if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
                   1905: 	    $temp_file = Apache::File->new('>'.$filename);
                   1906: 	    print $temp_file "$duetime\n";
                   1907: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                   1908: 		if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
                   1909: 		    $frontmatter .= $begin_doc.
1.448     bisitz   1910: 			'\textit{'.$duedate_text.'} '.$toc_line;
1.319     foxr     1911: 		} else {
                   1912: 		    $frontmatter.= $begin_doc.$toc_line;
1.463     foxr     1913: 		    if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { 
1.492     christia 1914: 			$frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463     foxr     1915: 		    }
1.319     foxr     1916: 		}
                   1917: 	    } else {
1.448     bisitz   1918: 		$frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319     foxr     1919: 	    }
                   1920: 	} else {
                   1921: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                   1922: 		$frontmatter .= $begin_doc.$toc_line;
1.463     foxr     1923: 		if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { 
1.492     christia 1924: 		    $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463     foxr     1925: 		}
1.319     foxr     1926: 	    } else {
1.381     albertel 1927: 		$frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319     foxr     1928: 	    }
                   1929: 	}
                   1930: 	$result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
                   1931:     }
                   1932: 
1.159     albertel 1933:     my $status=$Apache::inputtags::status['-1'];
                   1934:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                   1935: 	$target eq 'tex') {
1.249     albertel 1936: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159     albertel 1937: 	    # if part is zero, no <part>s existed, so we need to the grading
1.249     albertel 1938: 	    if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
                   1939: 		&Apache::inputtags::grade;
1.324     albertel 1940: 	    } elsif ($status eq 'NEEDS_CHECKIN') {
                   1941: 		# no need to grade, and don't want to hide data
1.249     albertel 1942: 	    } else {
                   1943: 		# move any submission data to .hidden
                   1944: 		&Apache::inputtags::hidealldata($Apache::inputtags::part);
                   1945: 	    }
1.159     albertel 1946: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                   1947: 		  $Apache::inputtags::part eq '0' &&
1.490     raeburn  1948: 		  $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED'
                   1949:                   && !$env{'form.grade_imsexport'}) {
1.159     albertel 1950: 	    # if part is zero, no <part>s existed, so we need show the current
                   1951: 	    # grading status
                   1952: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                   1953: 	    $result.= $gradestatus;
                   1954: 	}
                   1955: 	if (
1.284     albertel 1956: 	    (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159     albertel 1957: 	    ($target eq 'answer') || ($target eq 'tex')
                   1958: 	   ) {
1.490     raeburn  1959: 	    if (($target ne 'tex') &&
                   1960: 		($env{'form.answer_output_mode'} ne 'tex') && 
                   1961:                 (!$env{'form.grade_imsexport'})) {
1.254     www      1962: 		$result.="</form>";
1.159     albertel 1963: 	    }
                   1964: 	    if ($target eq 'web') {
1.507     raeburn  1965:                 #
                   1966:                 # Closing </body></html> not added by end_page().
                   1967:                 # Added separately at end of this routine, after added
                   1968:                 # <script></script> so document will be valid xhtml.
                   1969:                 #
                   1970: 		$result.= &Apache::loncommon::end_page({'discussion' => 1,
                   1971: 							'notbody'    => 1});
1.159     albertel 1972: 	    } elsif ($target eq 'tex') {
1.178     sakharuk 1973: 		my $endminipage = '';
1.284     albertel 1974: 		if (not $env{'form.problem_split'}=~/yes/) {
1.178     sakharuk 1975: 		    $endminipage = '\end{minipage}';
                   1976: 		}
1.284     albertel 1977:                 if ($env{'form.print_discussions'} eq 'yes') {
1.263     sakharuk 1978: 		    $result.=&Apache::lonxml::xmlend($target,$parser);
1.159     albertel 1979: 		} else {
1.262     sakharuk 1980: 		    $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284     albertel 1981: 		    if (not $env{'request.symb'} =~ m/\.page_/) {
1.262     sakharuk 1982: 			$result .= $endminipage.'\end{document} ';
                   1983: 		    } else {
1.382     albertel 1984: 			$result .= $endminipage;
1.262     sakharuk 1985: 		    }
1.159     albertel 1986: 		}
                   1987: 	    }
                   1988: 	}
1.476     www      1989:         if ($target eq 'web') {
                   1990:            $result.=&Apache::functionplotresponse::init_script();
                   1991:         }
1.159     albertel 1992: 	if ($target eq 'grade') {
                   1993: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                   1994: 	    &finalize_storage();
                   1995: 	}
1.284     albertel 1996: 	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
                   1997: 	    && $env{'form.answer_output_mode'} ne 'tex') {
1.346     albertel 1998: 	    $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294     albertel 1999: 	                        # normally we get it from above, but in CSTR
1.172     albertel 2000: 	                        # we always show answer mode too.
1.159     albertel 2001: 	}
                   2002:     } elsif ($target eq 'meta') {
                   2003: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel 2004: 	    @Apache::inputtags::response=();
1.159     albertel 2005: 	    $result=&Apache::response::mandatory_part_meta;
                   2006: 	}
1.215     albertel 2007: 	$result.=&Apache::response::meta_part_order();
1.258     albertel 2008: 	$result.=&Apache::response::meta_response_order();
1.159     albertel 2009:     } elsif ($target eq 'edit') {
                   2010: 	&Apache::lonxml::debug("in end_problem with $target, edit");
1.314     albertel 2011: 	$result .= &problem_edit_footer();
1.320     albertel 2012:     } elsif ($target eq 'modified') {
                   2013: 	 $result .= $token->[2];
1.159     albertel 2014:     }
1.155     albertel 2015: 
1.284     albertel 2016:     if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177     albertel 2017: 	&Apache::inputtags::check_for_duplicate_ids();
                   2018:     }
1.204     albertel 2019: 
                   2020:     &reset_problem_globals('problem');
1.159     albertel 2021: 
1.502     foxr     2022:     #
                   2023:     # This shouild be just above the return so that the
                   2024:     # time put in the javascript is as late as possible in the
                   2025:     # computation:
                   2026:     #
                   2027:     if ($target eq 'web') {
                   2028:         $result .= &Apache::lonhtmlcommon::set_compute_end_time();
1.507     raeburn  2029:         #
                   2030:         # Closing tags delayed so any <script></script> tags 
                   2031:         # not in head can appear inside body, for valid xhtml.
                   2032:         # 
                   2033:         $result .= "</body>\n</html>";
1.502     foxr     2034:     }
1.159     albertel 2035:     return $result;
1.48      albertel 2036: }
                   2037: 
1.108     albertel 2038: 
1.48      albertel 2039: sub start_library {
1.159     albertel 2040:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343     albertel 2041:     my ($result,$form_tag_start);
1.371     albertel 2042:     if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244     albertel 2043: 	&init_problem_globals('library');
                   2044: 	$Apache::lonhomework::type='problem';
                   2045:     }
1.159     albertel 2046:     if ($target eq 'edit') {
1.343     albertel 2047: 	($result,$form_tag_start)=
                   2048: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   2049: 			'Edit');
                   2050: 	$result.=$form_tag_start.&problem_edit_header();
1.159     albertel 2051: 	my $temp=&Apache::edit::insertlist($target,$token);
                   2052: 	$result.=$temp;
                   2053:     } elsif ($target eq 'modified') {
                   2054: 	$result=$token->[4];
1.340     albertel 2055:     } elsif (($target eq 'web' || $target eq 'webgrade')
1.371     albertel 2056: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340     albertel 2057: 	     && $env{'request.state'} eq "construct" ) {
1.159     albertel 2058: 	my $name=&get_resource_name($parstack,$safeeval);
1.343     albertel 2059: 	($result,$form_tag_start)=
                   2060: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   2061: 			$name);
1.479     raeburn  2062: 	my $rndseed=&setup_rndseed($safeeval,$target);
1.343     albertel 2063: 	$result.=" \n $form_tag_start".	
1.159     albertel 2064: 		  '<input type="hidden" name="submitted" value="yes" />';
                   2065: 	$result.=&problem_web_to_edit_header($rndseed);
1.428     raeburn  2066:         if ($Apache::lonhomework::type eq 'practice') {
                   2067:             $result.= '<input type="submit" name="resetdata" '.
                   2068:                       'value="'.&mt('New Problem Variation').'" />'.
                   2069:                       &practice_problem_header().'<hr />';
                   2070:         }
1.159     albertel 2071:     }
                   2072:     return $result;
1.48      albertel 2073: }
                   2074: 
                   2075: sub end_library {
1.159     albertel 2076:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2077:     my $result='';
                   2078:     if ($target eq 'edit') {
                   2079: 	$result=&problem_edit_footer();
1.371     albertel 2080:     } elsif ($target eq 'web' 
                   2081: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library') 
                   2082: 	     && $env{'request.state'} eq "construct") {
1.349     albertel 2083: 	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159     albertel 2084:     }
1.371     albertel 2085:     if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
                   2086: 	&reset_problem_globals('library');
                   2087:     }
1.159     albertel 2088:     return $result;
1.197     www      2089: }
                   2090: 
                   2091: sub start_definetag {
1.326     albertel 2092:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197     www      2093: 
                   2094:     my $result;
                   2095: 
                   2096:     my $name = $token->[2]->{'name'};
1.326     albertel 2097:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396     albertel 2098:     if ($target eq 'web') {
                   2099: 	if ($name=~/^\//) {
                   2100: 	    $result=
                   2101: 		'<br /><table class="LC_sty_end"><tr><th>'.
                   2102: 		&mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
                   2103: 	} else {
                   2104: 	    $result=
                   2105: 		'<br /><table class="LC_sty_begin"><tr><th>'.
                   2106: 		&mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
                   2107: 	}
                   2108: 	$skip = &HTML::Entities::encode($skip, '<>&"');
                   2109: 	$result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197     www      2110:     }
                   2111:     return $result;
                   2112: }
                   2113: 
                   2114: sub end_definetag {
                   2115:     return '';
1.1       albertel 2116: }
                   2117: 
                   2118: sub start_block {
1.201     albertel 2119:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel 2120: 
                   2121:     my $result;
1.1       albertel 2122: 
1.339     albertel 2123:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer'  ||
                   2124: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159     albertel 2125: 	my $code = $token->[2]->{'condition'};
1.385     albertel 2126: 	if (defined($code) && $code ne '') {
1.137     albertel 2127: 	    if (!$Apache::lonxml::default_homework_loaded) {
                   2128: 		&Apache::lonxml::default_homework_load($safeeval);
                   2129: 	    }
1.131     albertel 2130: 	    $result = &Apache::run::run($code,$safeeval);
                   2131: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                   2132: 	} else {
                   2133: 	    $result='1';
                   2134: 	}
                   2135: 	if ( ! $result ) {
1.201     albertel 2136: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel 2137: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   2138: 	}
                   2139: 	$result='';
                   2140:     } elsif ($target eq 'edit') {
                   2141: 	$result .=&Apache::edit::tag_start($target,$token);
                   2142: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                   2143: 					  $token,40);
                   2144: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2145:     } elsif ($target eq 'modified') {
                   2146: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2147: 						     $safeeval,'condition');
                   2148: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel 2149:     }
1.131     albertel 2150:     return $result;
1.1       albertel 2151: }
                   2152: 
                   2153: sub end_block {
1.167     www      2154:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2155:     my $result;
                   2156:     if ($target eq "edit") {
                   2157: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   2158:     }
                   2159:     return $result;
                   2160: }
1.500     foxr     2161: #
                   2162: #  <languageblock [include='lang1,lang2...'] [exclude='lang1,lang2...']>
                   2163: #  ...
                   2164: #  </languageblock>
                   2165: #
                   2166: #   This declares the intent to provide content that can be rendered in the
                   2167: #   set of languages in the include specificatino but not in the exclude
                   2168: #   specification.  If a currently preferred language is in the include list
                   2169: #   the content in the <languageblock>...</languageblock> is rendered
                   2170: #   If the currently preferred language is in the exclude list,
                   2171: #   the content in the <languageblock>..></languageblock is not rendered.
                   2172: #
                   2173: #   Pathalogical case handling:
                   2174: #     - Include specified, without the preferred language but exclude  specified
                   2175: #       also without the preferred langauge results in rendering the block.
                   2176: #     - Exclude specified without include and excluden not containing a 
                   2177: #       preferred language renders the block.
                   2178: #     - Include and exclude both specifying the preferred language does not
                   2179: #       render the block.
                   2180: #     - If neither include/exclude is specified, the block gets rendered.
                   2181: #
                   2182: #  This tag has no effect when target is in {edit, modified}
                   2183: #
1.167     www      2184: sub start_languageblock {
1.201     albertel 2185:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www      2186: 
1.500     foxr     2187:     my $result = '';
1.167     www      2188: 
1.339     albertel 2189:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2190: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201     albertel 2191: 	my $include = $token->[2]->{'include'};
                   2192: 	my $exclude = $token->[2]->{'exclude'};
1.436     raeburn  2193:         my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.500     foxr     2194: 
                   2195:         # This should not even happen, since we should at least have the server language
                   2196: 
                   2197:         if (!$preferred_languages[0]) { 
                   2198: 	    $preferred_languages[0]='en'; 
                   2199: 	}
                   2200: 
                   2201:         # Now loop over all languages in order of preference
                   2202: 
                   2203: 	my $render;
1.398     www      2204:         foreach my $preferred_language (@preferred_languages) {
1.500     foxr     2205: 
                   2206: 	    # If neither include/nor exlude is present the block is going
                   2207: 	    # to get rendered.
                   2208: 
1.399     www      2209:            my $found=0;
1.500     foxr     2210:            $render=1;
                   2211: 
                   2212: 	   #  If include is specified,  don't render the block
                   2213: 	   #  unless the preferred language is included in the set.
                   2214: 
1.398     www      2215: 	   if ($include) {
1.500     foxr     2216:               $render=0;
1.398     www      2217:               foreach my $included_language (split(/\,/,$include)) {
                   2218:                  if ($included_language eq $preferred_language) {
1.500     foxr     2219:                     $render=1; 
1.399     www      2220:                     $found=1; 
1.500     foxr     2221: 		    last;	# Only need to find the first.
1.398     www      2222:                  }
                   2223:               }
                   2224: 	   }
1.500     foxr     2225:            # Do we have an exclude argument?
                   2226: 	   # If so, and one of the languages matches a preferred language
                   2227: 	   # inhibit rendering the block.  Note that in the pathalogical case the
                   2228: 	   # author has specified a preferred language in both the include and exclude
                   2229: 	   # attribte exclude is preferred.  
                   2230: 
1.398     www      2231:            if ($exclude) {
1.500     foxr     2232:               $render=1;
1.398     www      2233:               foreach my $excluded_language (split(/\,/,$exclude)) {
                   2234:                  if ($excluded_language eq $preferred_language) {
1.500     foxr     2235:                     $render=0;
1.399     www      2236:                     $found=1;
1.500     foxr     2237: 		    last;	# Only need to find the first.
1.398     www      2238:                  }
                   2239:               }
                   2240: 	   }
1.500     foxr     2241:            if ($found) { 
                   2242: 	       last; 		# Done on any match of include or exclude.
                   2243: 	   }
1.398     www      2244:         }
1.500     foxr     2245: 	# If $render not true skip the entire block until </languageblock>
                   2246: 	#
                   2247: 
                   2248: 	if ( ! $render ) {
1.201     albertel 2249: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                   2250: 						   $style);
                   2251: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   2252: 	}
1.500     foxr     2253: 	# If $render is true, we've not skipped the contents of the <languageglock>
                   2254: 	# and the normal loncapa processing flow will render it as a matter of course.
                   2255: 
1.167     www      2256:     } elsif ($target eq 'edit') {
                   2257: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 2258: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www      2259: 					  $token,40);
1.211     albertel 2260: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www      2261: 					  $token,40);
                   2262: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2263:     } elsif ($target eq 'modified') {
                   2264: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel 2265: 						     $safeeval,'include',
                   2266: 						     'exclude');
1.167     www      2267: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   2268:     }
                   2269:     return $result;
                   2270: }
                   2271: 
                   2272: sub end_languageblock {
1.170     www      2273:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2274:     my $result;
1.201     albertel 2275:     if ($target eq "edit") {
1.170     www      2276: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   2277:     }
                   2278:     return $result;
                   2279: }
1.500     foxr     2280: #  languagblock specific tags:
                   2281: {
                   2282:     # For chunks of a resource that has translations, this hash contains
                   2283:     # the translations available indexed by language name.
                   2284:     #
                   2285: 
                   2286:     my %available_texts;       
1.170     www      2287: 
1.500     foxr     2288:     # <translated> starts a block of a resource that has multiple translations.
                   2289:     # See the <lang> tag as well.
                   2290:     # When </translated> is encountered if there is a translation for the 
                   2291:     # currently preferred language, that is rendered inthe web/tex/webgrade
                   2292:     # targets.  Otherwise, the default text is rendered.
                   2293:     #
                   2294:     # Note that <lang> is only registered for the duration of the 
                   2295:     #  <translated>...</translated> block 
                   2296:     #
                   2297:     # Pathalogical case handling:
                   2298:     #   - If there is no <lang> that specifies a 'default' and there is no
                   2299:     #     translation that matches a preferred language, nothing is rendered.
                   2300:     #   - Nested <translated>...</translated> might be linguistically supported by
                   2301:     #     XML due to the stack nature of tag registration(?) however the rendered
                   2302:     #     output will be incorrect because there is only one %available_texts
                   2303:     #     has and end_translated clears it.
                   2304:     #   - Material outside of a <lang>...</lang> block within the
                   2305:     #     <translated>...<translated> block won't render either e.g.:
                   2306:     #    <translated>
                   2307:     #      The following will be in your preferred langauge:
                   2308:     #      <lang which='en'>
                   2309:     #         This section in english
                   2310:     #      </lang>
                   2311:     #      <lang which='sgeiso'>
                   2312:     #         Hier es ist auf Deutsch.
                   2313:     #      </lang>
                   2314:     #      <lang which='sfriso'>
                   2315:     #         En Francais
                   2316:     #      </lang>
                   2317:     #    </translated>
                   2318:     #
                   2319:     #    The introductory text prior to the first <lang> tag is not rendered.
                   2320:     #
1.397     albertel 2321:     sub start_translated {
                   2322: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2323: 	&Apache::lonxml::register('Apache::structuretags',('lang'));
                   2324: 	undef(%available_texts);
                   2325:     }
                   2326:     
                   2327:     sub end_translated {
                   2328: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2329: 	my $result;
                   2330: 	#show the translation on viewable targets
                   2331: 	if ($target eq 'web'     || $target eq 'tex' || $target eq 'webgrade'||
                   2332: 	    # or non-viewable targets, if it's embedded in something that
                   2333: 	    # wants the output
                   2334: 	    (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
                   2335: 	     && &Apache::lonxml::in_redirection() ) ) {
                   2336: 	    my @possibilities = keys(%available_texts);
                   2337: 	    my $which = 
                   2338: 		&Apache::loncommon::languages(\@possibilities) || 'default';
1.500     foxr     2339: 	    if ($target eq 'tex') {
                   2340: 		$result = &select_hyphenation($which);
                   2341: 	    }
                   2342: 	    $result .= $available_texts{$which};
                   2343: 	    if ($target eq 'tex') {
                   2344: 		$result .= &select_metadata_hyphenation(); # Restore original language.
                   2345: 	    }
1.397     albertel 2346: 	}
                   2347: 	undef(%available_texts);
                   2348: 	&Apache::lonxml::deregister('Apache::structuretags',('lang'));
                   2349: 	return $result;
                   2350:     }
                   2351: 
1.500     foxr     2352:     # <lang [which='language-name'] [other='lang1,lang2...']>  
                   2353:     #  Specifies that the block contained within it is a translation 
                   2354:     #  for a specific language specified by the 'which' attribute. The
                   2355:     #   'other' attribute can be used by itself or in conjunction with
                   2356:     #   which to specify this tag _may_ be used as a translation for some
                   2357:     #   list of languages. e.g.:  <lang which='senisoUS' other='senisoCA,senisoAU,seniso'>
                   2358:     #   specifying that the block provides a translation for US (primary)
                   2359:     #   Canadian, Australian and UK Englush.
                   2360:     #   
                   2361:     # Comment: this seems a bit silly why not just support a list of languages
                   2362:     #           e.g. <lang which='l1,l2...'> and ditch the other attribute?
                   2363:     #
                   2364:     #  Effect:
                   2365:     #    The material within the <lang>..</lang> block is stored in the
                   2366:     #    specified set of $available_texts hash entries, the appropriate one
                   2367:     #    is selected at </translated> time.
                   2368:     #
                   2369:     #  Pathalogical case handling:
                   2370:     #    If a language occurs multiple times within a <translated> block,
                   2371:     #    only the last one is rendered e.g.:
                   2372:     #
                   2373:     #    <translated>
                   2374:     #       <lang which='senisoUS', other='senisoCA,senisoAU,seniso'>
                   2375:     #          Red green color blindness is quite common affecting about 7.8% of 
                   2376:     #          the male population, but onloy about .65% of the female population.
                   2377:     #       </lang>
                   2378:     #          Red green colour blindness is quite common affecting about 7.8% of 
                   2379:     #          the male population, but onloy about .65% of the female population.
                   2380:     #       <lang which='seniso', other='senisoCA,senisoAU'>
                   2381:     #     </translated>
                   2382:     #
                   2383:     #    renders the correct spelling of color (colour) for people who have specified
                   2384:     #    a preferred language that is one of the British Commonwealth languages
                   2385:     #    even though those are also listed as valid selections for the US english
                   2386:     #    <lang> block.
                   2387:     #
1.397     albertel 2388:     sub start_lang {
                   2389: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2390: 	if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2391: 	    $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
                   2392: 	    &Apache::lonxml::startredirection();
                   2393: 	}
                   2394: 	return '';
                   2395:     }
                   2396: 
                   2397:     sub end_lang {
                   2398: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2399: 	if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2400: 	    $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
                   2401: 	    my $result = &Apache::lonxml::endredirection();
                   2402: 	    my $which = &Apache::lonxml::get_param('which',$parstack,
                   2403: 						   $safeeval);
1.431     raeburn  2404:             if ($which=~/\w/) {
                   2405:                 $available_texts{$which} = $result;
                   2406:             }
                   2407:             my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
                   2408:                                                         $safeeval);
                   2409:             foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
                   2410:                 if ($language=~/\w/) {
                   2411:                     $available_texts{$language} = $result;
                   2412:                 }
1.427     bisitz   2413:             }
                   2414: 
1.397     albertel 2415: 	}
                   2416: 	return '';
                   2417:     }
1.500     foxr     2418: }				# end langauge block specific tags.
                   2419: 
1.397     albertel 2420: 
1.170     www      2421: sub start_instructorcomment {
1.201     albertel 2422:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www      2423: 
                   2424:     my $result;
                   2425: 
1.339     albertel 2426:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2427: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468     raeburn  2428:         $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284     albertel 2429: 	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201     albertel 2430: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                   2431: 						   $parser,$style);
1.170     www      2432: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   2433: 	}
                   2434: 	$result='';
                   2435:     } elsif ($target eq 'edit') {
                   2436: 	$result .=&Apache::edit::tag_start($target,$token);
                   2437: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2438:     }
                   2439:     return $result;
                   2440: }
                   2441: 
                   2442: sub end_instructorcomment {
1.159     albertel 2443:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 2444:     my $result;
                   2445:     if ($target eq "edit") {
                   2446: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   2447:     }
                   2448:     return $result;
1.4       tsai     2449: }
                   2450: 
                   2451: sub start_while {
1.326     albertel 2452:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2453: 
1.160     albertel 2454:     my $result;
1.339     albertel 2455:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2456: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 2457: 	my $code = $token->[2]->{'condition'};
1.4       tsai     2458: 
1.160     albertel 2459: 	push( @Apache::structuretags::whileconds, $code);
                   2460: 	if (!$Apache::lonxml::default_homework_loaded) {
                   2461: 	    &Apache::lonxml::default_homework_load($safeeval);
                   2462: 	}
                   2463: 	my $result = &Apache::run::run($code,$safeeval);
1.326     albertel 2464: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160     albertel 2465: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel 2466: 	push( @Apache::structuretags::whileline, $token->[5]);
                   2467: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel 2468: 	if ( $result ) {
                   2469: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                   2470: 	}
                   2471:     } elsif ($target eq 'edit') {
                   2472: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 2473: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel 2474: 					  $token,40);
                   2475: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2476:     } elsif ($target eq 'modified') {
                   2477: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2478: 						     $safeeval,'condition');
                   2479: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel 2480:     }
1.160     albertel 2481:     return $result;
1.4       tsai     2482: }
                   2483: 
                   2484: sub end_while {
1.159     albertel 2485:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 2486:     my $result;
                   2487: 
1.339     albertel 2488:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2489: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 2490: 	my $code = pop(@Apache::structuretags::whileconds);
                   2491: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel 2492: 	my $line = pop(@Apache::structuretags::whileline);
                   2493: 	my $return = &Apache::run::run($code,$safeeval);
                   2494: 	my $starttime=time;
                   2495: 	my $error=0;
                   2496: 	while ($return) {
                   2497: 	    if (time-$starttime >
                   2498: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378     albertel 2499: 		$return = 0; $error=1; next;
1.161     albertel 2500: 	    }
                   2501: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
1.380     albertel 2502: 	    if ($target eq 'grade' || $target eq 'answer' ||
                   2503: 		$target eq 'analyze') {
                   2504: 		# grade/answer/analyze should produce no output but if we
                   2505: 		# are redirecting, the redirecter should know what to do
                   2506: 		# with the output
                   2507: 		if (!$Apache::lonxml::redirection) { undef($result); }
                   2508: 	    }
1.161     albertel 2509: 	    $return = &Apache::run::run($code,$safeeval);
                   2510: 	}
1.516     bisitz   2511:         if ($error) {
                   2512:             &Apache::lonxml::error(
                   2513:                 '<pre>'
                   2514:                .&mt('Code ran too long. It ran for more than [_1] seconds.',
                   2515:                         $Apache::lonnet::perlvar{'lonScriptTimeout'})
                   2516:                .&mt('This occurred while running &lt;while&gt; on line [_1].',
                   2517:                         $line)
                   2518:                .'</pre>');
                   2519:         }
1.160     albertel 2520:     } elsif ($target eq "edit") {
                   2521: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel 2522:     }
1.160     albertel 2523:     return $result;
1.1       albertel 2524: }
1.6       tsai     2525: 
1.160     albertel 2526: # <randomlist show="1">
1.6       tsai     2527: #  <tag1>..</tag1>
                   2528: #  <tag2>..</tag2>
                   2529: #  <tag3>..</tag3>
1.160     albertel 2530: #  ...
1.6       tsai     2531: # </randomlist>
                   2532: sub start_randomlist {
1.326     albertel 2533:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2534:     my $result;
1.339     albertel 2535:     if ($target eq 'answer' || $target eq 'grade'   || $target eq 'web' ||
                   2536: 	$target eq 'tex'    || $target eq 'analyze' || $target eq 'webgrade') {
1.331     albertel 2537: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305     albertel 2538: 	my $b_parser= HTML::LCParser->new(\$body);
                   2539: 	$b_parser->xml_mode(1);
                   2540: 	$b_parser->marked_sections(1);
1.159     albertel 2541: 	my $b_tok;
                   2542: 	my @randomlist;
                   2543: 	my $list_item;
                   2544: 	while($b_tok = $b_parser->get_token() ) {
                   2545: 	    if($b_tok->[0] eq 'S') { # start tag
                   2546: 		# get content of the tag until matching end tag
                   2547: 		# get all text upto the matching tag
                   2548: 		# and push the content into @randomlist
                   2549: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                   2550: 							   $b_parser);
                   2551: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                   2552: 		push(@randomlist,$list_item);
                   2553: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                   2554:                 #         $list_item</b>";
                   2555: 	    }
                   2556: 	    if($b_tok->[0] eq 'T') { # text
                   2557: 		# what to do with text in between tags?
                   2558: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                   2559: 	    }
                   2560: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                   2561: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                   2562: 	    # }
                   2563: 	}
1.303     albertel 2564: 	if (@randomlist) {
                   2565: 	    my @idx_arr = (0 .. $#randomlist);
                   2566: 	    &Apache::structuretags::shuffle(\@idx_arr);
                   2567: 	    my $bodytext = '';
                   2568: 	    my $show=$#randomlist;
                   2569: 	    my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                   2570: 	    $showarg--;
                   2571: 	    if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439     raeburn  2572:             if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
                   2573:                 my @currlist;
                   2574:                 my $part = $Apache::inputtags::part;
                   2575:                 if ($part ne '') {
                   2576:                     if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
                   2577:                         my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
                   2578:                         if (!(grep(/^\Q$part\E$/,@currlist))) {
                   2579:                             push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
                   2580:                         }
                   2581:                     } else {
                   2582:                         push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
                   2583:                     }
                   2584:                 }
                   2585:             }
1.526     raeburn  2586: 	    for my $i (0 .. $show) {
                   2587: 		$bodytext .= "$randomlist[ $idx_arr[$i] ]";
1.303     albertel 2588: 	    }
                   2589: 	    &Apache::lonxml::newparser($parser,\$bodytext);
1.159     albertel 2590: 	}
                   2591:     } elsif ($target eq 'edit' ) {
                   2592: 	$result .=&Apache::edit::tag_start($target,$token);
                   2593: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                   2594: 					   $token,5);
                   2595: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2596:     } elsif ($target eq 'modified' ) {
                   2597: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2598: 						     $safeeval,'show');
                   2599: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   2600:     }
                   2601:     return $result;
1.7       tsai     2602: }
                   2603: 
                   2604: sub shuffle {
                   2605:     my $a=shift;
                   2606:     my $i;
1.303     albertel 2607:     if (ref($a) eq 'ARRAY' && @$a) {
1.251     albertel 2608: 	&Apache::response::pushrandomnumber();
1.159     albertel 2609: 	for($i=@$a;--$i;) {
                   2610: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                   2611: 	    next if $i == $j;
                   2612: 	    @$a[$i,$j] = @$a[$j,$i];
                   2613: 	}
1.251     albertel 2614: 	&Apache::response::poprandomnumber();
1.7       tsai     2615:     }
1.6       tsai     2616: }
                   2617: 
                   2618: sub end_randomlist {
1.159     albertel 2619:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2620:     my $result;
                   2621:     if ($target eq 'edit' ) {
                   2622: 	$result=&Apache::edit::tag_end($target,$token,
                   2623: 				       'End Randomly Parsed Block');
                   2624:     }
                   2625:     return $result;
1.6       tsai     2626: }
                   2627: 
1.283     albertel 2628: sub ordered_show_check {
                   2629:     my $last_part=$Apache::inputtags::partlist[-2];
                   2630:     my $in_order=
                   2631: 	&Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
                   2632:     my $in_order_show=1;
                   2633:     if ($last_part ne '0' && lc($in_order) eq 'yes') {
                   2634: 	$in_order_show=&Apache::response::check_status($last_part);
                   2635:     }
                   2636:     return $in_order_show;
                   2637: }
                   2638: 
1.469     www      2639: 
                   2640: sub start_startpartmarker {
                   2641:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2642:     my $result='';
                   2643:     if ($target eq 'edit') {
                   2644:         $result=&Apache::edit::tag_start($target,$token);
                   2645:         $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
                   2646:         $result.=&Apache::edit::end_table();
                   2647: 
                   2648:     } 
                   2649:     return $result;
                   2650: }
                   2651: 
                   2652: sub end_startpartmarker {
                   2653:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2654:     my @result;
                   2655:     if ($target eq 'edit') { $result[1]='no'; }
                   2656:     return @result;
                   2657: }
                   2658: 
                   2659: sub start_endpartmarker {
                   2660:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2661:     my $result='';
                   2662:     if ($target eq 'edit') {
                   2663:         $result=&Apache::edit::tag_start($target,$token);
                   2664:         $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
                   2665:         $result.=&Apache::edit::end_table();
                   2666: 
                   2667:     }
                   2668:     return $result;
                   2669: }
                   2670: 
                   2671: sub end_endpartmarker {
                   2672:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2673:     my @result;
                   2674:     if ($target eq 'edit') { $result[1]='no'; }
                   2675:     return @result;
                   2676: }
                   2677: 
                   2678: 
                   2679: 
                   2680: 
                   2681: 
1.11      albertel 2682: sub start_part {
1.326     albertel 2683:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321     albertel 2684:     if (!$Apache::lonxml::metamode) {
                   2685: 	&Apache::lonxml::startredirection(); # we'll use redirection to fix up 
                   2686: 	                                     # duedates.
                   2687:     }
1.159     albertel 2688:     my $result='';
1.386     albertel 2689:     my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159     albertel 2690:     $Apache::inputtags::part=$id;
1.177     albertel 2691:     push(@Apache::inputtags::partlist,$id);
                   2692:     @Apache::inputtags::response=();
1.159     albertel 2693:     @Apache::inputtags::previous=();
                   2694:     @Apache::inputtags::previous_version=();
1.405     albertel 2695:     &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403     albertel 2696:     &Apache::response::reset_params();
                   2697: 
1.159     albertel 2698:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259     albertel 2699:     my $newtype=&Apache::lonnet::EXT("resource.$id.type");
                   2700:     if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283     albertel 2701:     my $in_order_show=&ordered_show_check();
1.214     albertel 2702:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259     albertel 2703:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209     albertel 2704:     &Apache::run::run($expression,$safeeval);
1.159     albertel 2705: 
                   2706:     if ($target eq 'meta') {
1.224     www      2707: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   2708: 	return &Apache::response::mandatory_part_meta.
                   2709: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 2710:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   2711: 	     $target eq 'answer' || $target eq 'tex') {
1.283     albertel 2712: 	if ($hidden || !$in_order_show) {
1.326     albertel 2713: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159     albertel 2714: 	} else {
                   2715: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   2716: 	    push (@Apache::inputtags::status,$status);
                   2717: 	    my $expression='$external::datestatus="'.$status.'";';
                   2718: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   2719: 	    &Apache::run::run($expression,$safeeval);
1.284     albertel 2720: 	    if ($env{'request.state'} eq 'construct') {
1.241     albertel 2721: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 2722: 	    }
1.216     albertel 2723: 	    if (( $status eq 'CLOSED' ) ||
                   2724: 		( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 2725: 		( $status eq 'NOT_YET_VIEWED') ||
1.216     albertel 2726: 		( $status eq 'BANNED') ||
                   2727: 		( $status eq 'UNAVAILABLE') ||
                   2728: 		( $status eq 'INVALID_ACCESS')) {
1.326     albertel 2729: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
                   2730: 							   $style);
1.159     albertel 2731: 		if ( $target eq "web" ) {
1.211     albertel 2732: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 2733: 		} elsif ( $target eq 'tex' ) {
1.284     albertel 2734: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.211     albertel 2735: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 2736: 		    } else {
1.211     albertel 2737: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 2738: 		    }
1.159     albertel 2739: 		}
                   2740: 	    } else {
                   2741: 		if ($target eq 'tex') {
1.284     albertel 2742: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.264     sakharuk 2743: 			if ($$tagstack[-2] eq 'td') {
1.388     foxr     2744: 			    $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264     sakharuk 2745: 			} else {
                   2746: 			    $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   2747: 			}
1.195     sakharuk 2748: 		    }
1.159     albertel 2749: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284     albertel 2750: 		    my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.526     raeburn  2751: 		    my @allkeys = split(/,/,$allkeys);
1.222     sakharuk 2752: 		    my $allow_print_points = 0;
                   2753: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 2754: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 2755: 			    if ($1 ne '0') {$allow_print_points=1;}
                   2756: 			}
                   2757: 		    }
1.275     albertel 2758: 		    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   2759: 		    if (defined($maxtries) && $maxtries < 0) {
                   2760: 			$allow_print_points=0;
                   2761: 		    }
1.302     albertel 2762: 		    if (lc($env{'course.'.$env{'request.course.id'}.
                   2763: 				    '.disableexampointprint'}) eq 'yes') {
                   2764: 			$allow_print_points=0;
                   2765: 		    }
1.463     foxr     2766: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { 
1.492     christia 2767: 			$result .= '\vskip 10mm\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463     foxr     2768: 
                   2769: 		    }
1.233     www      2770: 		} elsif ($target eq 'web') {
1.479     raeburn  2771:                     if ($status eq 'CAN_ANSWER') {
                   2772:                         my $problemstatus = &get_problem_status($Apache::inputtags::part); 
                   2773:                         my $probrandomize = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].type");
                   2774:                         my $probrandtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].randomizeontries");
                   2775:                         my $num = scalar(@Apache::inputtags::partlist)-1;
                   2776:                         if ($probrandomize eq 'randomizetry') {
                   2777:                             if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") ne 'randomizetry') {
                   2778:                                 $result .= &randomizetry_part_header($problemstatus,'none',$num);
                   2779:                             } else {
                   2780:                                 my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
                   2781:                                 if ($probrandtries ne $reqtries) {
                   2782:                                     $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
                   2783:                                 }
                   2784:                             }
                   2785:                         } elsif (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") eq 'randomizetry') {
                   2786:                             my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
                   2787:                             $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
                   2788:                         }
                   2789:                     }
1.475     raeburn  2790: 		    $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159     albertel 2791: 		}
                   2792: 	    }
                   2793: 	}
                   2794:     } elsif ($target eq 'edit') {
                   2795: 	$result.=&Apache::edit::tag_start($target,$token);
                   2796: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   2797: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      2798: 	    '&nbsp;&nbsp;'.
                   2799: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 2800: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2801:     } elsif ($target eq 'modified') {
                   2802: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 2803: 						     $safeeval,'id','display');
1.159     albertel 2804: 	if ($constructtag) {
1.225     albertel 2805: 	    #limiting ids to only letters numbers, and space
1.224     www      2806: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 2807: 	    $result = &Apache::edit::rebuild_tag($token);
                   2808: 	}
                   2809:     }
                   2810:     return $result;
1.11      albertel 2811: }
                   2812: 
                   2813: sub end_part {
1.159     albertel 2814:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2815:     &Apache::lonxml::debug("in end_part $target ");
                   2816:     my $status=$Apache::inputtags::status['-1'];
                   2817:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283     albertel 2818:     my $in_order_show=&ordered_show_check();
1.321     albertel 2819:     my $result;
                   2820:     if (!$Apache::lonxml::metamode) {
                   2821: 	$result = &Apache::lonxml::endredirection(); # started in &start_part
1.329     albertel 2822: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel 2823:     }
1.312     albertel 2824:     if ($target eq 'grade') {
1.249     albertel 2825: 	if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283     albertel 2826: 	    !$hidden && $in_order_show) {
1.311     foxr     2827: 	    $result.=&Apache::inputtags::grade;
1.249     albertel 2828: 	} else {
                   2829: 	    # move any submission data to .hidden
                   2830: 	    &Apache::inputtags::hidealldata($Apache::inputtags::part);
                   2831: 	}
1.283     albertel 2832:     } elsif (($target eq 'web' || $target eq 'tex') &&
                   2833: 	     !$hidden && $in_order_show) {
1.159     albertel 2834: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   2835: 							$target);
1.490     raeburn  2836: 	if (($Apache::lonhomework::type eq 'exam' && $target eq 'tex') ||
                   2837:              ($env{'form.grade_imsexport'})) {
1.212     albertel 2838: 	    $gradestatus='';
                   2839: 	}
1.311     foxr     2840: 	$result.=$gradestatus;
1.265     sakharuk 2841: 	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';} 
1.181     albertel 2842:     } elsif ($target eq 'edit') {
1.311     foxr     2843: 	$result.=&Apache::edit::end_table();
1.322     albertel 2844:     } elsif ($target eq 'modified') {
                   2845: 	 $result .= $token->[2];
1.159     albertel 2846:     }
                   2847:     pop @Apache::inputtags::status;
                   2848:     $Apache::inputtags::part='';
1.295     albertel 2849:     $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159     albertel 2850:     return $result;
1.11      albertel 2851: }
1.1       albertel 2852: 
1.25      albertel 2853: sub start_preduedate {
1.326     albertel 2854:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339     albertel 2855:     if ($target eq 'web' || $target eq 'grade'    || $target eq 'answer' ||
                   2856: 	$target eq 'tex' || $target eq 'webgrade') {
1.236     albertel 2857: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300     albertel 2858: 	if (!$Apache::lonhomework::scantronmode &&
                   2859: 	    $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 2860: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   2861: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326     albertel 2862: 	    &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159     albertel 2863: 	}
1.24      albertel 2864:     }
1.159     albertel 2865:     return '';
1.24      albertel 2866: }
                   2867: 
1.25      albertel 2868: sub end_preduedate {
1.159     albertel 2869:     return '';
1.24      albertel 2870: }
                   2871: 
1.369     foxr     2872: # In all the modes where <postanswerdate> text is 
                   2873: # displayable,  all we do is eat up the text between the start/stop
                   2874: # tags if the conditions are not right to display it.
1.25      albertel 2875: sub start_postanswerdate {
1.326     albertel 2876:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370     foxr     2877:     my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
                   2878: 	&Apache::lonnet::allowed('pav',
                   2879: 			   $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369     foxr     2880:     if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370     foxr     2881: 	$target eq 'tex' ) {
1.300     albertel 2882: 	if ($Apache::lonhomework::scantronmode ||
1.370     foxr     2883: 	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
                   2884: 	    (($target eq 'tex') && !$pav)) {
1.326     albertel 2885: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159     albertel 2886: 	}
                   2887:     }
                   2888:     return '';
1.24      albertel 2889: }
                   2890: 
1.25      albertel 2891: sub end_postanswerdate {
1.159     albertel 2892:     return '';
1.24      albertel 2893: }
                   2894: 
1.25      albertel 2895: sub start_notsolved {
1.326     albertel 2896:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2897:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339     albertel 2898: 	$target eq 'tex' || $target eq 'webgrade') {
1.159     albertel 2899: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   2900: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 2901: 	if ($gradestatus =~ /^correct/ &&
                   2902: 	    &Apache::response::show_answer()) {
1.159     albertel 2903: 	    &Apache::lonxml::debug("skipping");
1.326     albertel 2904: 	    &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159     albertel 2905: 	}
1.24      albertel 2906:     }
1.159     albertel 2907:     return '';
1.24      albertel 2908: }
                   2909: 
1.25      albertel 2910: sub end_notsolved {
1.159     albertel 2911:     return '';
1.24      albertel 2912: }
                   2913: 
                   2914: sub start_solved {
1.326     albertel 2915:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2916:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   2917: 	$target eq 'tex') {
                   2918: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 2919: 	if ($gradestatus !~ /^correct/ ||
                   2920: 	    !&Apache::response::show_answer()) {
1.326     albertel 2921: 	    &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159     albertel 2922: 	}
1.24      albertel 2923:     }
1.159     albertel 2924:     return '';
1.24      albertel 2925: }
                   2926: 
                   2927: sub end_solved {
1.248     albertel 2928:     return '';
                   2929: }
                   2930: 
                   2931: sub start_problemtype {
1.326     albertel 2932:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248     albertel 2933:     my $result;
1.339     albertel 2934:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2935: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248     albertel 2936: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
                   2937: 	if (!defined($mode)) { $mode='show'; }
                   2938: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
                   2939: 	my $found=0;
                   2940: 	foreach my $type (split(',',$for)) {
                   2941: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
                   2942: 	}
                   2943: 	if ($mode eq 'show' && !$found) {
1.326     albertel 2944: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 2945: 	}
                   2946: 	if ($mode eq 'hide' && $found) {
1.326     albertel 2947: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 2948: 	}
                   2949:     } elsif ($target eq 'edit') {
                   2950: 	$result .=&Apache::edit::tag_start($target,$token);
                   2951: 	$result.=&Apache::edit::select_arg('Mode:','mode',
                   2952: 					   [['show','Show'],
                   2953: 					    ['hide','Hide']]
                   2954: 					   ,$token);
                   2955: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
1.511     bisitz   2956: 					     [ ['exam','Bubblesheet Exam/Quiz Problem'],
1.248     albertel 2957: 					       ['survey','Survey'],
1.465     raeburn  2958:                                                ['surveycred','Survey (with credit)'],
                   2959:                                                ['anonsurvey','Anonymous Survey'],
                   2960:                                                ['anonsurveycred','Anonymous Survey (with credit)'],
1.428     raeburn  2961: 					       ['problem','Homework Problem'],
1.479     raeburn  2962:                                                ['practice','Practice Problem'],
                   2963:                                                ['randomizetry','New Randomization Each Try'] ]
1.248     albertel 2964: 					     ,$token);
                   2965: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2966:     } elsif ($target eq 'modified') {
                   2967: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2968: 						     $safeeval,'mode','for');
                   2969: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   2970:     }
                   2971:     return $result;
                   2972: }
                   2973: 
                   2974: sub end_problemtype {
1.159     albertel 2975:     return '';
1.24      albertel 2976: }
1.34      albertel 2977: 
                   2978: sub start_startouttext {
1.159     albertel 2979:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2980:     my @result=(''.'');
                   2981:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404     albertel 2982:     
                   2983:     my $nesting = 
                   2984: 	&Apache::lonxml::set_state('outtext',
                   2985: 				   &Apache::lonxml::get_state('outtext')+1);
                   2986:     if ($nesting > 1 && $env{'request.state'} eq 'construct') {
                   2987: 	&Apache::lonxml::error("Nesting of &lt;startouttext /&gt; not allowed, on line ".$token->[5]);
                   2988:     }
1.159     albertel 2989:     return (@result);
1.34      albertel 2990: }
1.159     albertel 2991: 
1.34      albertel 2992: sub end_startouttext {
1.326     albertel 2993:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2994:     my $result='';
                   2995:     my $text='';
                   2996:     if ($target eq 'edit') {
1.424     foxr     2997: 	my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326     albertel 2998: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.527   ! golterma 2999:         $result.=&Apache::edit::start_table($token)."<tr><td>".&Apache::loncommon::insert_folding_button()
        !          3000:                  ." ".&mt('Text Block')."</td>"
1.438     bisitz   3001:                  .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437     raeburn  3002:                  .&Apache::edit::deletelist($target,$token)
1.474     raeburn  3003:                  .'</span></td>'
1.515     golterma 3004: 	         .'<td><span id="math_'.$areaid.'">'
1.474     raeburn  3005: 		 .&Apache::lonhtmlcommon::dragmath_button($areaid,1)
1.512     bisitz   3006: 		 .'</span></td>'
1.474     raeburn  3007: 		 .'<td>'
                   3008: 		 .&Apache::edit::insertlist($target,$token)
                   3009: 		 .'</td>'
1.515     golterma 3010: 	         .'<td class="LC_edit_problem_latexhelper">' .
1.474     raeburn  3011: 	         &Apache::loncommon::helpLatexCheatsheet().
1.159     albertel 3012: 		 &Apache::edit::end_row().
1.362     albertel 3013:                  &Apache::edit::start_spanning_row()."\n".
1.255     www      3014: 		 &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159     albertel 3015:     }
                   3016:     if ($target eq 'modified') {
1.219     albertel 3017: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 3018:     }
                   3019:     if ($target eq 'tex') {
                   3020: 	$result .= '\noindent ';
                   3021:     }
                   3022:     return $result;
1.34      albertel 3023: }
1.159     albertel 3024: 
1.34      albertel 3025: sub start_endouttext {
1.159     albertel 3026:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   3027:     my $result='';
                   3028:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   3029:     if ($target eq "modified") {
                   3030: 	$result='<endouttext />'.
1.377     albertel 3031: 	    &Apache::edit::handle_insertafter('startouttext');
                   3032:     }
1.404     albertel 3033: 
                   3034:     my $nesting = 
                   3035: 	&Apache::lonxml::set_state('outtext',
                   3036: 				   &Apache::lonxml::get_state('outtext')-1);
                   3037:     if ($nesting < 0 && $env{'request.state'} eq 'construct') {
                   3038: 	&Apache::lonxml::error(" Extraneous &lt;endouttext /&gt; not allowed on line ".$token->[5]);
                   3039: 	&Apache::lonxml::set_state('outtext', 0);
                   3040:     }
1.159     albertel 3041:     return $result;
1.34      albertel 3042: }
1.159     albertel 3043: 
1.34      albertel 3044: sub end_endouttext {
1.159     albertel 3045:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   3046:     my @result=('','');
                   3047:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   3048:     return (@result);
1.34      albertel 3049: }
1.159     albertel 3050: 
1.45      albertel 3051: sub delete_startouttext {
1.326     albertel 3052:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   3053:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159     albertel 3054:     my $text=$$parser['-1']->get_text("/endouttext");
                   3055:     my $ntoken=$$parser['-1']->get_token();
                   3056:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   3057:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   3058:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   3059:     # they did the last time round
                   3060:     &Apache::lonxml::increasedepth($ntoken);
                   3061:     &Apache::lonxml::decreasedepth($ntoken);
                   3062:     return 1;
1.193     www      3063: }
                   3064: 
                   3065: sub start_simpleeditbutton {
                   3066:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   3067:     my $result='';
1.284     albertel 3068:     if (($env{'form.simple_edit_button'} ne 'off') &&
1.273     albertel 3069: 	($target eq 'web') &&
1.330     albertel 3070:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284     albertel 3071:         my $url=$env{'request.noversionuri'};
1.193     www      3072:         $url=~s/\?.*$//;
1.367     albertel 3073: 	my ($symb) = &Apache::lonnet::whichuser();
1.451     bisitz   3074: #       Warning makes more sense and is more important on edit screen
1.442     bisitz   3075: #       $result='<p class="LC_warning">'
                   3076: #              .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
                   3077: #              .&Apache::loncommon::help_open_topic('Caching')
                   3078: #              .'</p>';
1.486     www      3079:         $result.=&Apache::loncommon::head_subbox(
                   3080:                  &Apache::lonhtmlcommon::start_funclist()
1.451     bisitz   3081:                 .&Apache::lonhtmlcommon::add_item_funclist(
                   3082:                      '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
                   3083:                     .&mt('Edit').'</a>')
1.486     www      3084:                 .&Apache::lonhtmlcommon::end_funclist());
1.442     bisitz   3085: 
1.193     www      3086:     }
                   3087:     return $result;
                   3088: }
                   3089: 
                   3090: sub end_simpleeditbutton {
                   3091:     return '';
1.45      albertel 3092: }
1.34      albertel 3093: 
1.428     raeburn  3094: sub practice_problem_header {
                   3095:     return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
                   3096:            '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
                   3097:            '</span>';
                   3098: }
                   3099: 
1.479     raeburn  3100: sub randomizetry_problem_header {
                   3101:     my ($problemstatus,$reqtries) = @_;
                   3102:     my ($header,$text);
                   3103:     if ($reqtries > 1) {
                   3104:         $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
                   3105:         if (($problemstatus eq 'no') ||
                   3106:             ($problemstatus eq 'no_feedback_ever')) {
                   3107:             $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
                   3108:         } else {
                   3109:             $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
                   3110:         }
                   3111:     } else {
                   3112:         $header = &mt('New Problem Variation Each Try');
                   3113:         if (($problemstatus eq 'no') ||
                   3114:             ($problemstatus eq 'no_feedback_ever')) {
                   3115:             $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
                   3116: 
                   3117:         } else {
                   3118:             $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
                   3119:         }
                   3120:     }
                   3121:     return '<span class="LC_info"><h3>'.$header.'</h3></span>'.
                   3122:            '<span class="LC_info">'.$text.'</span><hr />';
                   3123: }
                   3124: 
                   3125: sub randomizetry_part_header {
                   3126:     my ($problemstatus,$reqtries,$num) = @_;
                   3127:     my ($header,$text);
                   3128:     if ($reqtries eq 'none') {
                   3129:         $header = &mt('No Question Variation');
                   3130:         $text = &mt('For this question there will no new variation after a try.');
                   3131:     } elsif ($reqtries > 1) {
                   3132:         $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
                   3133:         if (($problemstatus eq 'no') ||
                   3134:             ($problemstatus eq 'no_feedback_ever')) {
                   3135:             $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
                   3136:         } else {
                   3137:             $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
                   3138:         }
                   3139:     } else {
                   3140:         $header = &mt('New Question Variation For Each Try');
                   3141:         if (($problemstatus eq 'no') ||
                   3142:             ($problemstatus eq 'no_feedback_ever')) {
                   3143:             $text =  &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
                   3144:         } else {
                   3145:             $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
                   3146:         }
                   3147:     }
                   3148:     my $output;
                   3149:     if ($num > 1) {
                   3150:         $output .= '<hr />';
                   3151:     }
                   3152:     $output .=  '<span class="LC_info"><h4>'.$header.'</h4></span>'.
                   3153:                   '<span class="LC_info">'.$text.'</span><br /><br />';
                   3154:     return $output;
                   3155: }
                   3156: 
1.1       albertel 3157: 1;
                   3158: __END__
1.435     jms      3159: 
                   3160: =pod
                   3161: 
                   3162: =back
                   3163: 
                   3164: =cut

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