Annotation of loncom/homework/structuretags.pm, revision 1.512.2.22

1.34      albertel    1: # The LearningOnline Network with CAPA 
                      2: # definition of tags that give a structure to a document
1.74      albertel    3: #
1.512.2.22! raeburn     4: # $Id: structuretags.pm,v 1.512.2.21 2019/11/04 20:50:57 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 $result;;
1.10      albertel  220: }
                    221: 
                    222: sub end_tex {
1.44      ng        223:     return '';
1.9       albertel  224: }
                    225: 
1.400     albertel  226: sub homework_js {
1.512.2.9  raeburn   227:     my ($postsubmit,$timeout);
                    228:     if (($env{'request.course.id'}) && ($env{'request.state'} ne 'construct')) {
                    229:         my $crstype;
                    230:         if (&Apache::loncommon::course_type() eq 'Community') {
                    231:             $crstype = 'community';
                    232:         } else {
                    233:             if ($env{'course.'.$env{'request.course.id'}.'.internal.coursecode'}) {
                    234:                 $crstype = 'official';
                    235:             } elsif ($env{'course.'.$env{'request.course.id'}.'.internal.textbook'}) {
                    236:                 $crstype = 'textbook';
                    237:             } else {
                    238:                 $crstype = 'unofficial';
                    239:             }
                    240:         }
                    241:         $postsubmit = $env{'course.'.$env{'request.course.id'}.'.internal.postsubmit'};
                    242:         if ($postsubmit eq '') {
                    243:             my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
                    244:             $postsubmit = $domdefs{'postsubmit'};
                    245:             unless ($postsubmit eq 'off') {
                    246:                 $timeout = $domdefs{$crstype.'postsubtimeout'};
                    247:             }
                    248:         } elsif ($postsubmit eq '0') {
                    249:             $postsubmit = 'off';
                    250:         } elsif ($postsubmit eq '1') {
                    251:             $postsubmit = 'on';
                    252:             $timeout = $env{'course.'.$env{'request.course.id'}.'.internal.postsubtimeout'};
                    253:             if ($timeout eq '') {
                    254:                 my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
                    255:                 $timeout = $domdefs{$crstype.'postsubtimeout'};
                    256:             }
                    257:         }
                    258:         if ($timeout eq '') {
                    259:             $timeout = 60;
                    260:         }
                    261:     } else {
                    262:         my %domdefs = &Apache::lonnet::get_domain_defaults($env{'request.role.domain'});
                    263:         $postsubmit = $domdefs{'postsubmit'};
                    264:         unless ($postsubmit eq 'off') {
                    265:             $timeout = 60;
                    266:         }
                    267:     }
                    268:     my $jstimeout = 0;
                    269:     if ($timeout) {
                    270:         $jstimeout = 1000 * $timeout;
                    271:     }
1.400     albertel  272:     return &Apache::loncommon::resize_textarea_js().
1.512.2.11  raeburn   273:            &Apache::loncommon::colorfuleditor_js().
1.416     raeburn   274:            &setmode_javascript().
1.512.2.9  raeburn   275: 	<<"JS";
1.400     albertel  276: <script type="text/javascript">
1.483     raeburn   277: // <![CDATA[
1.494     raeburn   278: function setSubmittedPart (part,prefix) {
                    279:     if (typeof(prefix) == 'undefined') {
                    280:         this.document.lonhomework.submitted.value="part_"+part;
                    281:     } else {
                    282:         for (var i=0;i<this.document.lonhomework.elements.length;i++) {
                    283:             if (this.document.lonhomework.elements[i].name == prefix+'submitted') {
                    284:                 this.document.lonhomework.elements[i].value="part_"+part;
                    285:             }
                    286:         }
                    287:     }
1.400     albertel  288: }
                    289: 
1.512.2.9  raeburn   290: function disableAutoComplete (id) {
                    291:     var field = document.getElementById(id);
                    292:     if (field != null && field != undefined){
                    293:         if ('autocomplete' in field) {
                    294:             field.autocomplete = "off";
                    295:         } else {
                    296:             field.setAttribute("autocomplete", "off");
                    297:         }
                    298:     }
                    299: }
                    300: 
1.400     albertel  301: function image_response_click (which, e) {
                    302:     init_geometry();
                    303:     if (!e) { e = window.event; } //IE
                    304:     var input_element = document.lonhomework.elements[which];
1.401     albertel  305:     var token_element = document.lonhomework.elements[which+'_token'];
1.400     albertel  306:     var token = token_element.value;
1.401     albertel  307:     var img_element   = document.getElementById(which+'_imageresponse');
1.400     albertel  308:     var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
                    309:     var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
                    310:     var click = x+':'+y;
                    311:     input_element.value = click;
1.485     raeburn   312:     img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
1.400     albertel  313: }
1.512.2.9  raeburn   314: 
                    315: var submithandled = 0;
                    316: var keypresshandled = 0;
                    317: var postsubmit = '$postsubmit';
                    318: 
                    319: \$(document).ready(function(){
                    320:   if (postsubmit != 'off') {
                    321:     \$(document).keypress(function(event){
                    322:         var keycode = (event.keyCode ? event.keyCode : event.which);
                    323:         if ((keycode == '13') && (keypresshandled == 0)) {
                    324:             if ( \$( document.activeElement ).hasClass("LC_textline") ) {
                    325:                 keypresshandled = 1;
                    326:                 var idsArray = \$( document.activeElement ).attr("id").split(/HWVAL_/);
                    327:                 if (idsArray.length) {
                    328:                     event.preventDefault();
                    329:                     var itemsArray = idsArray[1].split(/_/);
                    330:                     var buttonId = idsArray[0]+'submit_'+itemsArray[0];
                    331:                     \$("#"+buttonId).trigger("click");
                    332:                 }
                    333:             }
                    334:         }
                    335:     });
                    336: 
                    337:     \$(document).delegate('form :submit', 'click', function( event ) {
                    338:         if ( \$( this ).hasClass( "LC_hwk_submit" ) ) {
                    339:             var buttonId = this.id;
                    340:             var timeout = $jstimeout;
                    341:             if (submithandled == 0) {
                    342:                 submithandled = 1;
                    343:                 \$( "#msg_"+buttonId ).css({"display": "inline","background-color": "#87cefa",
                    344:                                            "color": "black","padding": "2px"}) ;
1.512.2.18  raeburn   345:                 if (( \$(this.form).attr("id") == "LC_page" ) && (\$('input[name="all_submit"]').length )) {
1.512.2.9  raeburn   346:                     if (buttonId != "all_submit") {
                    347:                         \$( ".LC_status_"+buttonId ).hide();
1.512.2.18  raeburn   348:                     }
                    349:                     if (( "#"+buttonId+"_pressed" ).length) {
                    350:                         \$( "#"+buttonId+"_pressed" ).val( "1" );
1.512.2.9  raeburn   351:                     }
                    352:                 } else {
                    353:                     \$( ".LC_status_"+buttonId ).hide();
                    354:                 }
                    355:                 \$(this.form).submit();
                    356:                 \$( ".LC_hwk_submit" ).prop( "disabled", true);
                    357:                 \$( ".LC_textline" ).prop( "readonly", "readonly");
                    358:                 event.preventDefault();
                    359: 
                    360:                 if (timeout > 0) {
                    361:                     setTimeout(function(){
                    362:                                        \$( "#msg_"+buttonId ).css({"display": "none"});
1.512.2.18  raeburn   363:                                        if (( \$(this.form).attr("id") == "LC_page" ) && (\$('input[name="all_submit"]').length )) {
                    364:                                            if (( "#"+buttonId+"_pressed" ).length) {
                    365:                                                \$( "#"+buttonId+"_pressed" ).val( "" );
1.512.2.9  raeburn   366:                                            }
                    367:                                        }
                    368:                                        \$( ".LC_hwk_submit" ).prop( "disabled", false);
                    369:                                        \$( ".LC_textline" ).prop( "readonly", false);
                    370:                                        submithandled = 0;
                    371:                                        keypresshandled = 0;
                    372:                                      }, timeout);
                    373:                 }
                    374:                 return true;
                    375:             }
                    376:         }
                    377:     });
                    378:   }
                    379: });
                    380: 
1.483     raeburn   381: // ]]>
1.400     albertel  382: </script>
                    383: JS
                    384: }
                    385: 
1.416     raeburn   386: sub setmode_javascript {
                    387:     return <<"ENDSCRIPT";
                    388: <script type="text/javascript">
1.485     raeburn   389: // <![CDATA[
1.416     raeburn   390: function setmode(form,probmode) {
1.512.2.13  raeburn   391:     var initial = form.problemmode.value;
1.416     raeburn   392:     form.problemmode.value = probmode;
                    393:     form.submit();
1.512.2.13  raeburn   394:     form.problemmode.value = initial;
1.416     raeburn   395: }
1.485     raeburn   396: // ]]>
1.416     raeburn   397: </script>
                    398: ENDSCRIPT
                    399: }
                    400: 
1.48      albertel  401: sub page_start {
1.345     albertel  402:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
                    403: 	$extra_head)=@_;
1.159     albertel  404:     my %found;
1.207     albertel  405:     foreach my $taginside (@$tagstack) {
1.159     albertel  406: 	foreach my $taglookedfor ('html','body','form') {
                    407: 	    if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
                    408: 	}
                    409:     }
                    410: 
1.343     albertel  411:     if ($target eq 'tex') {
                    412: 	return
                    413: 	    &Apache::londefdef::start_html($target,$token,$tagstack,
                    414: 					   $parstack,$parser,$safeeval);
                    415:     }
                    416: 
1.474     raeburn   417:     $extra_head .= &homework_js().
                    418:                    &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
                    419:     if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.512.2.12  raeburn   420:         my %textarea_args;
                    421:         if (($env{'request.state'} ne 'construct') ||
                    422:             ($env{'environment.nocodemirror'})) {
                    423:             %textarea_args = (
1.474     raeburn   424:                                 dragmath => 'math',
                    425:                               );
1.512.2.12  raeburn   426:         }
1.474     raeburn   427:         $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1.425     raeburn   428:     }
1.478     raeburn   429:     my $is_task = ($env{'request.uri'} =~ /\.task$/);
1.512.2.9  raeburn   430:     my ($needs_upload,$partlist);
1.495     raeburn   431:     my ($symb)= &Apache::lonnet::whichuser();
                    432:     my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
1.478     raeburn   433:     if ($is_task) {
1.495     raeburn   434:         $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
1.493     raeburn   435:     } else {
                    436:         if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.uploadedfiletypes") ne '') {
1.495     raeburn   437:             unless ($env{'request.state'} eq 'construct') {
                    438:                 my $navmap = Apache::lonnavmaps::navmap->new();
                    439:                 if (ref($navmap)) {
                    440:                     my $mapres = $navmap->getResourceByUrl($map);
1.496     raeburn   441:                     my $is_page;
                    442:                     if (ref($mapres)) {
                    443:                         $is_page = $mapres->is_page();
                    444:                     }
                    445:                     unless ($is_page) {
1.495     raeburn   446:                         $needs_upload = 1;
                    447:                     }
1.512.2.9  raeburn   448:                     if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
                    449:                         my $res = $navmap->getBySymb($symb);
                    450:                         if (ref($res)) {
                    451:                             $partlist = $res->parts();
                    452:                         }
                    453:                     }
1.495     raeburn   454:                 }
                    455:             }
1.493     raeburn   456:         } else {
                    457:             unless ($env{'request.state'} eq 'construct') {
                    458:                 my $navmap = Apache::lonnavmaps::navmap->new();
                    459:                 if (ref($navmap)) {
1.495     raeburn   460:                     my $mapres = $navmap->getResourceByUrl($map);
1.496     raeburn   461:                     my $is_page;
                    462:                     if (ref($mapres)) {
                    463:                         $is_page = $mapres->is_page();
                    464:                     }
1.512.2.9  raeburn   465:                     if ($is_page) {
                    466:                         if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
                    467:                             my $res = $navmap->getBySymb($symb);
                    468:                             if (ref($res)) {
                    469:                                 $partlist = $res->parts();
                    470:                             }
                    471:                         }
                    472:                     } else {
1.495     raeburn   473:                         my $res = $navmap->getBySymb($symb);
                    474:                         if (ref($res)) {
1.512.2.9  raeburn   475:                             $partlist = $res->parts();
1.495     raeburn   476:                             if (ref($partlist) eq 'ARRAY') {
                    477:                                 foreach my $part (@{$partlist}) {
                    478:                                     my @types = $res->responseType($part);
                    479:                                     my @ids = $res->responseIds($part);
                    480:                                     for (my $i=0; $i < scalar(@ids); $i++) {
                    481:                                         if ($types[$i] eq 'essay') {
                    482:                                             my $partid = $part.'_'.$ids[$i];
                    483:                                             if (&Apache::lonnet::EXT("resource.$partid.uploadedfiletypes") ne '') {
                    484:                                                 $needs_upload = 1;
                    485:                                                 last;
                    486:                                             }
1.493     raeburn   487:                                         }
                    488:                                     }
                    489:                                 }
1.495     raeburn   490:                             } 
                    491:                         }
1.493     raeburn   492:                     }
                    493:                 }
                    494:             }
                    495:         }
1.495     raeburn   496:         if ($needs_upload) {
1.512.2.17  raeburn   497:             $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js().
                    498:                            '<script type="text/javascript" '.
                    499:                            'src="/res/adm/includes/file_upload.js"></script>';
1.495     raeburn   500:         }
1.478     raeburn   501:     }
1.425     raeburn   502: 
1.344     albertel  503:     my %body_args;
                    504:     if (defined($found{'html'})) {
                    505: 	$body_args{'skip_phases'}{'head'}=1;
                    506:     } else {
1.343     albertel  507: 	
1.345     albertel  508: 	$extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343     albertel  509: 
1.379     albertel  510: 	$extra_head .= &Apache::londefdef::generate_css_links();
                    511: 
1.384     albertel  512: 	if ($env{'request.state'} eq 'construct') {
1.343     albertel  513: 	    $extra_head.=&Apache::edit::js_change_detection().
                    514: 		"<script type=\"text/javascript\">\n".
                    515: 		"if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
                    516: 		&Apache::loncommon::browser_and_searcher_javascript().
                    517:                 "\n</script>\n";
1.512.2.9  raeburn   518:             if ($target eq 'edit') {
                    519:                 $extra_head .= &Apache::edit::js_update_linknum();
                    520:             }
1.343     albertel  521: 	}
1.159     albertel  522:     }
1.343     albertel  523: 
1.446     bisitz    524:     my $pageheader = '';
1.344     albertel  525:     if (defined($found{'body'})) {
                    526: 	$body_args{'skip_phases'}{'body'}=1;
                    527:     } elsif (!defined($found{'body'}) 
                    528: 	     && $env{'request.state'} eq 'construct') {
1.343     albertel  529: 	if ($target eq 'web' || $target eq 'edit') {
1.512.2.3  raeburn   530:         # Breadcrumbs for Authoring Space
1.450     bisitz    531:         &Apache::lonhtmlcommon::clear_breadcrumbs();
                    532:         &Apache::lonhtmlcommon::add_breadcrumb({
1.512.2.3  raeburn   533:             'text'  => 'Authoring Space',
1.497     raeburn   534:             'href'  => &Apache::loncommon::authorspace($env{'request.uri'}),
1.450     bisitz    535:         });
1.460     droeschl  536:         # breadcrumbs (and tools) will be created 
                    537:         # in start_page->bodytag->innerregister
                    538: 
1.450     bisitz    539: # FIXME Where are we?
                    540: #        &Apache::lonhtmlcommon::add_breadcrumb({
                    541: #            'text'  => 'Problem Editing', # 'Problem Testing'
                    542: #            'href'  => '',
                    543: #        });
1.460     droeschl  544:         $pageheader =&Apache::loncommon::head_subbox(
1.446     bisitz    545:                 &Apache::loncommon::CSTR_pageheader());
1.297     albertel  546: 	}
1.272     albertel  547:     } elsif (!defined($found{'body'})) {
1.343     albertel  548: 	my %add_entries;
1.159     albertel  549: 	my $background=&Apache::lonxml::get_param('background',$parstack,
                    550: 						  $safeeval);
1.343     albertel  551: 	if ($background ne '' ) {
                    552: 	    $add_entries{'background'} = $background;
                    553: 	}
1.344     albertel  554: 
1.290     albertel  555: 	my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
                    556: 					       $safeeval);
1.446     bisitz    557:         if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
1.344     albertel  558: 
1.446     bisitz    559:         $body_args{'bgcolor'}        = $bgcolor;
                    560:         # $body_args{'no_title'}       = 1;
                    561:         $body_args{'force_register'} = 1;
                    562:         $body_args{'add_entries'}    = \%add_entries;
1.466     droeschl  563:         if ( $env{'request.state'} eq   'construct') {
1.446     bisitz    564:             $body_args{'only_body'}  = 1;
1.512.2.7  raeburn   565:         } elsif ($target eq 'web') {
                    566:             $body_args{'print_suppress'} = 1;
1.446     bisitz    567:         }
1.344     albertel  568:     }
1.365     albertel  569:     $body_args{'no_auto_mt_title'} = 1;
1.344     albertel  570:     my $page_start = &Apache::loncommon::start_page($name,$extra_head,
                    571: 						    \%body_args);
1.446     bisitz    572:     $page_start .= $pageheader;
1.462     raeburn   573:     if (!defined($found{'body'}) 
                    574: 	&& $env{'request.state'} ne 'construct'
                    575: 	&& ($target eq 'web' || $target eq 'webgrade')) {
                    576: 
                    577: 	my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
                    578:         if ($symb eq '' && !$publicuser) {
                    579:             $page_start .= '<p class="LC_info">'
                    580:                           .&mt('Browsing resource, all submissions are temporary.')
                    581:                           .'</p>';
1.457     bisitz    582:         }
1.344     albertel  583:     }
                    584: 
1.409     albertel  585:     if (!defined($found{'body'}) && $env{'request.state'} ne 'construct') {
1.343     albertel  586: 	$page_start .= &Apache::lonxml::message_location();
1.159     albertel  587:     }
                    588:     my $form_tag_start;
                    589:     if (!defined($found{'form'})) {
1.337     albertel  590: 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.465     raeburn   591: 	my $uri = &Apache::loncommon::inhibit_menu_check(
1.455     droeschl  592:                 &Apache::lonenc::check_encrypt($env{'request.uri'}));
1.464     raeburn   593:         $uri = &HTML::Entities::encode($uri,'<>&"');
1.327     albertel  594: 	$form_tag_start.=$uri.'" ';
                    595: 	if ($target eq 'edit') {
                    596: 	    $form_tag_start.=&Apache::edit::form_change_detection();
                    597: 	}
1.493     raeburn   598:         my ($symb,$courseid,$udom,$uname)=&Apache::lonnet::whichuser();
                    599:         my ($path,$multiresp) = 
                    600:             &Apache::loncommon::get_turnedin_filepath($symb,$uname,$udom);
1.495     raeburn   601:         if (($is_task) || ($needs_upload)) {
                    602:             $form_tag_start .= ' onsubmit="return file_submission_check(this,'."'$path','$multiresp'".');"';
1.478     raeburn   603:         }
1.368     albertel  604: 	$form_tag_start.='>'."\n";
1.355     albertel  605: 
                    606: 	if ($symb =~ /\S/) {
                    607: 	    $symb=
                    608: 		&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
                    609: 	    $form_tag_start.=
1.368     albertel  610: 		"\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355     albertel  611: 	}
1.159     albertel  612:     }
1.512.2.9  raeburn   613:     return ($page_start,$form_tag_start,$partlist);
1.105     albertel  614: }
                    615: 
1.141     matthew   616: #use Time::HiRes();
1.105     albertel  617: sub get_resource_name {
1.159     albertel  618:     my ($parstack,$safeeval)=@_;
1.388     foxr      619:     my $name;
1.204     albertel  620:     if (defined($Apache::lonhomework::name)) {
1.388     foxr      621: 	$name = $Apache::lonhomework::name;
                    622:     } else {
                    623: 	my ($symb)=&Apache::lonnet::whichuser();
1.392     albertel  624: 	$name=&Apache::lonnet::gettitle($symb);
1.388     foxr      625: 	if ($name eq '') {
                    626: 	    $name=&Apache::lonnet::EXT('resource.title');
                    627: 	    if ($name eq 'con_lost') { $name = ''; }
                    628: 	}
                    629: 	if ($name!~/\S+/) {
                    630: 	    $name=$env{'request.uri'};
                    631: 	    $name=~s-.*/([^/]+)$-$1-;
                    632: 	}
                    633: 	# The name has had html tags escaped:
                    634:        
                    635: 	$name=~s/&lt;/</gs;
                    636: 	$name=~s/&gt;/>/gs;
                    637: 
                    638: 	$Apache::lonhomework::name=$name;
1.204     albertel  639:     }
1.159     albertel  640:     return $name;
1.105     albertel  641: }
                    642: 
                    643: sub setup_rndseed {
1.512.2.9  raeburn   644:     my ($safeeval,$target,$probpartlist)=@_;
1.367     albertel  645:     my ($symb)=&Apache::lonnet::whichuser();
1.512.2.19  raeburn   646:     my ($questiontype,$set_safespace,$rndseed,$numtries,$reqtries);
1.479     raeburn   647:     if ($target eq 'analyze') {
                    648:         $questiontype = $env{'form.grade_questiontype'};
                    649:     }
                    650:     unless (defined($questiontype)) {
                    651:         $questiontype = $Apache::lonhomework::type;
                    652:     }
1.512.2.19  raeburn   653:     if ($Apache::lonhomework::type eq 'randomizetry') {
                    654:         my $partfortries = $Apache::inputtags::part;
1.512.2.22! raeburn   655: #
        !           656: # Where question type is "randomizetry" for a problem containing
        !           657: # a single part (and unless type is explicitly set to not be
        !           658: # "randomizetry" for that part), the number of tries used to
        !           659: # determine randomization will be for that part, and randomization
        !           660: # from calls to &random() in a perl script block before the part tag,
        !           661: # will change based on the number of tries, and value of the
        !           662: # "randomizeontries" parameter in effect for the single part.
        !           663: #
1.512.2.19  raeburn   664:         if (ref($probpartlist) eq 'ARRAY') {
1.512.2.22! raeburn   665:             if ((@{$probpartlist} == 1) && ($probpartlist->[0] ne $partfortries)) {
        !           666:                 if (&Apache::lonnet::EXT('resource.'.$probpartlist->[0].'.type') eq 'randomizetry') {
1.512.2.21  raeburn   667:                     $partfortries = $probpartlist->[0];
                    668:                 } else {
                    669:                     $partfortries = '';
                    670:                 }
1.512.2.19  raeburn   671:             }
                    672:         }
1.512.2.21  raeburn   673:         if ($partfortries ne '') {
                    674:             $numtries = $Apache::lonhomework::history{"resource.$partfortries.tries"};
                    675:             $reqtries = &Apache::lonnet::EXT("resource.$partfortries.randomizeontries");
                    676:         }
1.512.2.19  raeburn   677:     }
1.512.2.14  raeburn   678:     if (($env{'request.state'} eq "construct") 
                    679:         || ($symb eq '')
                    680:         || ($Apache::lonhomework::type eq 'practice')
                    681:         || ($Apache::lonhomework::history{'resource.CODE'}) 
                    682:         || (($env{'form.code_for_randomlist'}) && ($target eq 'analyze'))) {
1.316     www       683: 	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317     albertel  684: 						['rndseed']);
1.284     albertel  685: 	$rndseed=$env{'form.rndseed'};
1.159     albertel  686: 	if (!$rndseed) {
1.162     albertel  687: 	    $rndseed=$Apache::lonhomework::history{'rndseed'};
                    688: 	    if (!$rndseed) {
                    689: 		$rndseed=time;
                    690: 	    }
1.512.2.14  raeburn   691:             unless ($env{'form.code_for_randomlist'}) {
                    692:                 $env{'form.rndseed'}=$rndseed;
                    693:             }
1.162     albertel  694: 	}
1.512.2.20  raeburn   695:         if ((($env{'request.state'} eq "construct") || ($symb eq '')) &&
1.479     raeburn   696:             ($Apache::lonhomework::type eq 'randomizetry')) {
1.512.2.19  raeburn   697:             if ($numtries) {
                    698:                 if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
                    699:                     my $inc = int($numtries/$reqtries);
                    700:                     $rndseed += $inc;
                    701:                 } else {
                    702:                     $rndseed += $numtries;
                    703:                 }
1.479     raeburn   704:             }
1.480     raeburn   705:             $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.479     raeburn   706:         }
1.374     albertel  707: 	if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
                    708: 	      && $env{'form.submitted'} eq 'yes')  ||
1.284     albertel  709: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190     albertel  710: 	    srand(time);
                    711: 	    $rndseed=int(rand(2100000000));
1.284     albertel  712: 	    $env{'form.rndseed'}=$rndseed;
                    713: 	    delete($env{'form.resetdata'});
                    714: 	    delete($env{'form.newrandomization'});
1.159     albertel  715: 	}
1.488     www       716:         $rndseed=~s/\,/\:/g;
                    717:         $rndseed=~s/[^\w\d\:\-]//g;
1.489     www       718: 	if (defined($rndseed)) {
                    719:             my ($c1,$c2)=split(/\:/,$rndseed);
                    720:             unless ($c2) { $c2=0; }
                    721:             unless (($c1==int($c1)) && ($c2==int($c2))) {
                    722: 	       $rndseed=join(':',&Apache::lonnet::digest($rndseed));
                    723:             }
1.187     albertel  724:         }
1.512.2.14  raeburn   725:         if (($env{'form.code_for_randomlist'}) && ($target eq 'analyze')) {
                    726:             $env{'form.CODE'} = $env{'form.code_for_randomlist'};
                    727:             $rndseed=&Apache::lonnet::rndseed();
                    728:             undef($env{'form.CODE'});
                    729:         } elsif ($Apache::lonhomework::history{'resource.CODE'}) {
1.247     albertel  730: 	   $rndseed=&Apache::lonnet::rndseed();
                    731: 	}
1.479     raeburn   732:         $set_safespace = 1;
                    733:     } elsif ($questiontype eq 'randomizetry') {
                    734:         if ($target eq 'analyze') {
                    735:             if (defined($env{'form.grade_rndseed'})) {
                    736:                 $rndseed = $env{'form.grade_rndseed'};
                    737:             }
                    738:         }
                    739:         unless (($target eq 'analyze') && (defined($rndseed))) {
                    740:             $rndseed=&Apache::lonnet::rndseed();
1.512.2.19  raeburn   741:             my $curr_try = $numtries;
1.479     raeburn   742:             if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
                    743:                 $curr_try ++;
                    744:             }
                    745:             if ($rndseed =~/^(\d+)[,:](\d+)$/) {
                    746:                 $rndseed = $1;
                    747:             }
                    748:             if ($curr_try) {
                    749:                 if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
                    750:                     my $inc = int(($curr_try-1)/$reqtries);
                    751:                     $rndseed += $inc;
                    752:                 } else {
                    753:                     $rndseed += $curr_try;
                    754:                 }
                    755:             }
                    756:         }
                    757:         $set_safespace = 1;
1.512.2.9  raeburn   758:         if ($target eq 'grade') {
                    759:             $Apache::lonhomework::rawrndseed = $rndseed;
                    760:         }
1.479     raeburn   761:     }
                    762:     if ($set_safespace) {
                    763:         if ($safeeval) {
                    764:             &Apache::lonxml::debug("Setting rndseed to $rndseed");
                    765:             &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
                    766:         }
                    767:     }
                    768:     unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
                    769:         $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159     albertel  770:     }
                    771:     return $rndseed;
1.105     albertel  772: }
                    773: 
1.268     albertel  774: sub remember_problem_state {
                    775:     return '
1.284     albertel  776:        <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
                    777:        <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
                    778:        <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268     albertel  779: }
                    780: 
1.487     www       781: sub problem_edit_action_button {
                    782:     my ($name,$action,$accesskey,$text,$flag)=@_;
                    783:     my $actionscript="setmode(this.form,'$action')";
                    784:     return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
                    785:            ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
                    786: }
                    787: 
1.423     www       788: sub problem_edit_buttons {
1.487     www       789:    my ($mode)=@_;
1.512.2.11  raeburn   790: # Buttons that save
                    791:    my $result = '<div style="float:right">';
                    792:    if ($mode eq 'editxml') {
                    793:        $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
                    794:        $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
                    795:    } else {
                    796:        $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
                    797:        $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
                    798:    }
                    799:    $result.="\n</div>\n";
1.487     www       800: # Buttons that do not save
1.512.2.11  raeburn   801:    $result .= '<div>'.
1.487     www       802:               &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
                    803:    if ($mode eq 'editxml') {
                    804:        $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
                    805:        $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
1.512.2.11  raeburn   806:        if ($env{'environment.nocodemirror'}) {
                    807:            $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
                    808:        }
1.487     www       809:    } else {
                    810:        $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
                    811:        $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
                    812:    }
                    813:    $result.="\n</div>";
                    814:    return $result;
1.423     www       815: }
                    816: 
                    817: sub problem_edit_header {
1.512.2.11  raeburn   818:     my ($mode)=@_;
                    819:     my $return = '<input type="hidden" name="submitted" value="edit" />'.
1.487     www       820: 	&remember_problem_state('edit').'
1.512.2.11  raeburn   821:         <div class="LC_edit_problem_header">
                    822:         <div class="LC_edit_problem_header_title">
                    823:         '.&mt('Problem Editing').$mode.&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
                    824:          </div><div class="LC_edit_actionbar" id="actionbar">'.
                    825:          '<input type="hidden" name="problemmode" value="saveedit" />'.
                    826:          &problem_edit_buttons();
                    827: 
                    828:     $return .= '</div></div>' . &Apache::lonxml::message_location();
                    829:     $return .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined.css" />
                    830:     <script type="text/javascript" src="/adm/codemirror/codemirror-compressed-colorful.js"></script>';
                    831: 
                    832:     $return .= '<script type="text/javascript" src="/adm/jQuery/addons/jquery-scrolltofixed.js"></script>
                    833:         <script type="text/javascript">
                    834:             // unless internet explorer
                    835:             if (!(window.navigator.appName == "Microsoft Internet Explorer" && (document.documentMode || document.compatMode))){
                    836:                 $(document).ready(
                    837:                     function() {
                    838:                         $(\'.LC_edit_actionbar\').scrollToFixed(
                    839:                             {
                    840:                                 fixed: function(){
                    841:                                     //$(this).find(\'.LC_edit_actionbar\').css(\'height\', \'31px\');
                    842:                                     $(this).find(\'.LC_edit_actionbar\');
                    843:                                 }
                    844:                             }
                    845:                         );
                    846:                     }
                    847:                 );
                    848:             }
                    849:         </script>
                    850:         <table id="LC_edit_problem_colorful" border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
                    851:     return $return;
1.105     albertel  852: }
                    853: 
1.512.2.11  raeburn   854: 
1.105     albertel  855: sub problem_edit_footer {
1.512.2.11  raeburn   856:     my $resource = $env{'request.ambiguous'};
1.412     albertel  857:     return '</td></tr></table><br />
                    858: <div class="LC_edit_problem_footer">
1.453     bisitz    859:   <hr />'.
1.423     www       860: &problem_edit_buttons().'
1.459     bisitz    861:   <hr style="clear:both;" />
1.512.2.11  raeburn   862:   <script type="text/javascript">
                    863:       restoreState("'.$resource.'");
                    864:       restoreScrollPosition("'.$resource.'");
                    865:   </script>
1.412     albertel  866: </div>
                    867: '.
1.342     albertel  868:     "\n</form>\n".&Apache::loncommon::end_page();
1.105     albertel  869: }
                    870: 
1.235     albertel  871: sub option {
                    872:     my ($value,$name) = @_;
                    873:     my $result ="<option value='".$value."' ";
1.284     albertel  874:     if ($env{'form.'.$name} eq $value) {
1.235     albertel  875: 	$result.=" selected='on' ";
                    876:     }
                    877:     $result.='>';
                    878:     return $result;
                    879: }
                    880: 
1.105     albertel  881: sub problem_web_to_edit_header {
1.159     albertel  882:     my ($rndseed)=@_;
1.406     albertel  883:     my $result .= '<div class="LC_edit_problem_header">';
                    884: 
                    885:     if (!$Apache::lonhomework::parsing_a_task) {
                    886: 	$result .= 
                    887: 	    '<div class="LC_edit_problem_header_title">'.
                    888: 	    &mt('Problem Testing').
                    889: 	    &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
                    890: 	    '</div>';
                    891:     } else {
                    892: 	$result .= 
                    893: 	    '<div class="LC_edit_problem_header_title">'.
                    894: 	    &mt('Task Testing').
                    895: 	    '</div>';
                    896:     }
                    897:     
1.315     albertel  898:     my $show_all_foils_text = 
                    899: 	($Apache::lonhomework::parsing_a_task) ?
1.452     bisitz    900: 	&mt('Show All Instances')
                    901: 	: &mt('Show All Foils');
1.315     albertel  902: 
1.452     bisitz    903:     my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
                    904:                  .'<input type="checkbox" name="showallfoils"';
1.440     bisitz    905:     if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452     bisitz    906:     $show_all.= ' /> '.$show_all_foils_text
                    907:                .'</label></span>';
1.406     albertel  908: 
                    909: 
1.384     albertel  910: 
1.406     albertel  911:     $result .= '<div class="LC_edit_problem_header_status_row">';
1.313     albertel  912:     if (!$Apache::lonhomework::parsing_a_task) {
                    913: 	$result.="
1.406     albertel  914: <div class='LC_edit_problem_header_row1'>
                    915: <span class=\"LC_nobreak\">
1.405     albertel  916: ".&mt("Problem Status:")."
1.235     albertel  917: <select name='problemstate'>
1.270     albertel  918:   <option value=''></option>
1.235     albertel  919:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    920:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    921:   ".&option('CANNOT_ANSWER_tries'  ,'problemstate').&mt("Open with full tries")."</option>
                    922:   ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
                    923:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Answer")."</option>
                    924: </select>
1.406     albertel  925: </span>
                    926: <span class=\"LC_nobreak\">
1.405     albertel  927: ".&mt("Problem Type:")."
1.235     albertel  928: <select name='problemtype'>
1.270     albertel  929:   <option value=''></option>
1.512.2.1  raeburn   930:   ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
1.428     raeburn   931:   ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242     albertel  932:   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465     raeburn   933:   ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
                    934:   ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
                    935:   ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428     raeburn   936:   ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479     raeburn   937:   ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235     albertel  938: </select>
1.406     albertel  939: </span>
                    940: $show_all
                    941: </div>
                    942: <div class='LC_edit_problem_header_row2'>
                    943: <span class=\"LC_nobreak\">
1.405     albertel  944: ".&mt("Feedback Mode:")."
1.235     albertel  945: <select name='problemstatus'>
                    946:   <option value=''></option>
1.242     albertel  947:   ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.512.2.6  raeburn   948:   ".&option('no', 'problemstatus').&mt("Don't Show Incorrect/Correct Feedback")."</option>
1.405     albertel  949:   ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235     albertel  950: </select>
1.406     albertel  951: </span>
                    952: ";
                    953: 
1.376     albertel  954:     } elsif ($Apache::lonhomework::parsing_a_task) {
                    955: 	$result.="
1.406     albertel  956: <div class='LC_edit_problem_header_row1'>
                    957: <span class=\"LC_nobreak\">
1.405     albertel  958: ".&mt("Problem Status:")."
1.376     albertel  959: <select name='problemstate'>
                    960:   <option value=''></option>
                    961:   ".&option('CLOSED'               ,'problemstate').&mt("Closed")."</option>
                    962:   ".&option('CAN_ANSWER'           ,'problemstate').&mt("Answerable")."</option>
                    963:   ".&option('WEB_GRADE'            ,'problemstate').&mt("Criteria Grading")."</option>
                    964:   ".&option('SHOW_ANSWER'          ,'problemstate').&mt("Show Feedback")."</option>
                    965: </select>
1.406     albertel  966: </span>
                    967: $show_all
                    968: ";
                    969:     }
                    970:     $result.='
                    971:        <span class="LC_nobreak">
                    972:        '.&mt('Apply style file: ').'
                    973:          <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
                    974:          <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
                    975:        </span>
1.422     www       976:      </div>
                    977:      <div class="LC_edit_problem_header_row1">'.
                    978:        &Apache::lonxml::renderingoptions().'
1.406     albertel  979:      </div>
                    980:      <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
                    981:      <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
                    982:      <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
                    983:    </div>
1.453     bisitz    984:    <hr />
1.406     albertel  985:    <div class="LC_edit_problem_header_randomize_row">
                    986:      <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
                    987:      <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488     www       988:      <input type="text" name="rndseed" size="24" value="'.
1.406     albertel  989: 	       $rndseed.'"
                    990:              onchange="javascript:document.lonhomework.changerandseed.click()" />';
                    991: 
                    992:     if (!$Apache::lonhomework::parsing_a_task) {
                    993: 	my $numtoanalyze=$env{'form.numtoanalyze'};
                    994: 	if (!$numtoanalyze) { $numtoanalyze=20; }
1.408     albertel  995: 	$result .= '<span class="LC_nobreak">'.
                    996: 	    &mt('[_1] for [_2] versions.',
1.416     raeburn   997: 		'<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419     bisitz    998:                 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
                    999:                ,'<input type="text" name="numtoanalyze" value="'.
1.408     albertel 1000: 		$numtoanalyze.'" size="5" />').
                   1001: 		&Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
                   1002: 		'</span>';
                   1003: 						    
1.313     albertel 1004:     }
1.406     albertel 1005: 
                   1006:     $result.='
                   1007:    </div>
1.453     bisitz   1008:    <hr />
1.447     bisitz   1009:    <div>';
1.416     raeburn  1010:     $result.='<input type="hidden" name="problemmode" value="view" />';
                   1011:     $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
                   1012:                'onclick="javascript:setmode(this.form,'."'edit'".')" />';
                   1013:     $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
                   1014:                'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408     albertel 1015:     $result.='
                   1016:    </div>
1.453     bisitz   1017:    <hr />
1.409     albertel 1018:    '.&Apache::lonxml::message_location().'
1.406     albertel 1019: </div>';
1.159     albertel 1020:     return $result;
1.48      albertel 1021: }
                   1022: 
1.65      albertel 1023: sub initialize_storage {
1.357     albertel 1024:     my ($given_symb) = @_;
1.353     albertel 1025:     undef(%Apache::lonhomework::results);
                   1026:     undef(%Apache::lonhomework::history);
1.357     albertel 1027:     my ($symb,$courseid,$domain,$name) = 
1.367     albertel 1028: 	&Apache::lonnet::whichuser($given_symb);
1.353     albertel 1029:     
                   1030:     # anonymous users (CODEd exams) have no data
                   1031:     if ($name eq 'anonymous' 
                   1032: 	&& !defined($domain)) {
                   1033: 	return;
                   1034:     }
                   1035: 
1.333     albertel 1036:     if ($env{'request.state'} eq 'construct' 
                   1037: 	|| $symb eq ''
                   1038: 	|| $Apache::lonhomework::type eq 'practice') {
                   1039: 	
                   1040: 	my $namespace = $symb || $env{'request.uri'};
                   1041: 	if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374     albertel 1042: 	    ($env{'form.resetdata'} eq &mt('New Problem Variation')
                   1043: 	     && $env{'form.submitted'} eq 'yes') ||
1.333     albertel 1044: 	    $env{'form.newrandomization'} eq &mt('New Randomization')) {
                   1045: 	    &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
                   1046: 	    &Apache::lonxml::debug("Attempt reset");
                   1047: 	}
1.159     albertel 1048: 	%Apache::lonhomework::history=
1.333     albertel 1049: 	    &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.512.2.9  raeburn  1050: 	my ($temp)=keys(%Apache::lonhomework::history);
1.159     albertel 1051: 	&Apache::lonxml::debug("Return message of $temp");
                   1052:     } else {
                   1053: 	%Apache::lonhomework::history=
                   1054: 	    &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                   1055:     }
1.353     albertel 1056: 
1.159     albertel 1057:     #ignore error conditions
1.512.2.9  raeburn  1058:     my ($temp)=keys(%Apache::lonhomework::history);
1.159     albertel 1059:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65      albertel 1060: }
                   1061: 
1.435     jms      1062: =pod
                   1063: 
                   1064: =item finalize_storage()
                   1065: 
1.512.2.9  raeburn  1066: 	Stores away the result hash to a student's environment;
                   1067: 	checks form.grade_ for specific values, otherwise stores
                   1068: 	to the running user's environment.
                   1069: 
                   1070:         &check_correctness_changes() is called in two circumstances
                   1071:         in which the results hash is to be stored permanently, for
                   1072:         grading triggered by a student's submission, where feedback on
                   1073:         correctness is to be provided to the student.
                   1074: 
                   1075:         1. Immediately prior to storing the results hash
                   1076: 
                   1077:         To handle the case where a student's submission (and award) were
                   1078:         stored after history was retrieved in &initialize_storage(), e.g.,
                   1079:         if a student submitted answers in quick succession (e.g., from
                   1080:         multiple tabs).  &Apache::inputtags::hidealldata() is called for
                   1081:         any parts with out-of-order storage (i.e., correct then incorrect,
                   1082:         where awarded >= 1 when correct).
                   1083: 
                   1084:         2. Immediately after storing the results hash
                   1085: 
                   1086:         To handle the case where lond on the student's homeserver returns
                   1087:         delay:N -- where N is the number of transactions between the last
                   1088:         retrieved in &initialize_storage() and the last stored immediately
                   1089:         before permanent storage of the current transaction via
                   1090:         lond::store_handler().  &Apache::grades::makehidden() is called
                   1091:         for any parts with out-of-order storage (i.e., correct then incorrect,
                   1092:         where awarded >= 1 when correct).
                   1093: 
                   1094: 	Will call &store_aggregates() to increment totals for attempts, 
                   1095: 	students, and corrects, if running user has student role.
1.435     jms      1096: 	
                   1097: =cut
                   1098: 
                   1099: 
1.65      albertel 1100: sub finalize_storage {
1.357     albertel 1101:     my ($given_symb) = @_;
1.159     albertel 1102:     my $result;
1.289     albertel 1103:     if (%Apache::lonhomework::results) {
1.323     albertel 1104: 	my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
                   1105: 	delete(@Apache::lonhomework::results{@remove});
1.357     albertel 1106: 	my ($symb,$courseid,$domain,$name) = 
1.367     albertel 1107: 	    &Apache::lonnet::whichuser($given_symb);
1.333     albertel 1108: 	if ($env{'request.state'} eq 'construct' 
                   1109: 	    || $symb eq ''
                   1110: 	    || $Apache::lonhomework::type eq 'practice') {
                   1111: 	    my $namespace = $symb || $env{'request.uri'};
1.284     albertel 1112: 	    $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159     albertel 1113: 	    $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333     albertel 1114: 					      $namespace,'',$domain,$name);
1.159     albertel 1115: 	    &Apache::lonxml::debug('Construct Store return message:'.$result);
                   1116: 	} else {
1.512.2.9  raeburn  1117:             my ($laststore,$checkedparts,@parts,%postcorrect);
                   1118:             if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
                   1119:                 (!$Apache::lonhomework::scantronmode) && (!defined($env{'form.grade_symb'})) &&
                   1120:                 (!defined($env{'form.grade_courseid'}))) {
                   1121:                 if ($Apache::lonhomework::history{'version'}) {
                   1122:                     $laststore = $Apache::lonhomework::history{'version'}.'='.
                   1123:                                  $Apache::lonhomework::history{'timestamp'};
                   1124:                 } else {
                   1125:                     $laststore = '0=0';
                   1126:                 }
                   1127:                 my %record = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                   1128:                 if ($record{'version'}) {
                   1129:                     my ($newversion,$oldversion,$oldtimestamp);
                   1130:                     if ($Apache::lonhomework::history{'version'}) {
                   1131:                         $oldversion = $Apache::lonhomework::history{'version'};
                   1132:                         $oldtimestamp = $Apache::lonhomework::history{'timestamp'};
                   1133:                     } else {
                   1134:                         $oldversion = 0;
                   1135:                         $oldtimestamp = 0;
                   1136:                     }
                   1137:                     if ($record{'version'} > $oldversion) {
                   1138:                         if ($record{'timestamp'} >= $oldtimestamp) {
                   1139:                             $laststore = $record{'version'}.'='.$record{'timestamp'};
                   1140:                             $newversion = $record{'version'} + 1;
                   1141:                             $checkedparts = 1;
                   1142:                             foreach my $key (keys(%Apache::lonhomework::results)) {
                   1143:                                 if ($key =~ /^resource\.([^\.]+)\.solved$/) {
                   1144:                                     my $part = $1;
                   1145:                                     if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
                   1146:                                         push(@parts,$part);
                   1147:                                     }
                   1148:                                 }
                   1149:                             }
                   1150:                             if (@parts) {
                   1151:                                 my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
                   1152:                                                                                \%record,\@parts,$newversion,
                   1153:                                                                                $oldversion);
                   1154:                                 if (@parts_to_hide) {
                   1155:                                     foreach my $part (@parts_to_hide) {
                   1156:                                         $postcorrect{$part} = 1;
                   1157:                                         &Apache::inputtags::hidealldata($part);
                   1158:                                     }
                   1159:                                 }
                   1160:                             }
                   1161:                         }
                   1162:                     }
                   1163:                 }
                   1164:             }
1.159     albertel 1165: 	    $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
1.512.2.9  raeburn  1166: 					    $symb,$courseid,$domain,$name,$laststore);
                   1167:             if ($result =~ /^delay\:(\d+)$/) {
                   1168:                 my $numtrans = $1;
                   1169:                 my ($oldversion) = split(/=/,$laststore);
                   1170:                 if ($numtrans) {
                   1171:                     my $newversion = $oldversion + 1 + $numtrans;
                   1172:                     my @possparts;
                   1173:                     if ($checkedparts) {
                   1174:                         foreach my $part (@parts) {
                   1175:                             unless ($postcorrect{$part}) {
                   1176:                                 push(@possparts,$part);
                   1177:                             }
                   1178:                         }
                   1179:                     } else {
                   1180:                         foreach my $key (keys(%Apache::lonhomework::results)) {
                   1181:                             if ($key =~ /^resource\.([^\.]+)\.solved$/) {
                   1182:                                 my $part = $1;
                   1183:                                 unless ($postcorrect{$part}) {
                   1184:                                     if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
                   1185:                                         push(@possparts,$part);
                   1186:                                     }
                   1187:                                 }
                   1188:                             }
                   1189:                         }
                   1190:                     }
                   1191:                     if (@possparts) {
                   1192:                         my %newrecord = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
                   1193:                         my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
                   1194:                                                                        \%newrecord,\@possparts,$newversion,
                   1195:                                                                        $oldversion);
                   1196:                         if (@parts_to_hide) {
                   1197:                             my $partslist = join(',',@parts_to_hide);
                   1198:                             &Apache::grades::makehidden($newversion,$partslist,\%newrecord,$symb,$domain,$name,1);
                   1199:                         }
                   1200:                     }
                   1201:                 }
                   1202:             }
1.159     albertel 1203: 	    &Apache::lonxml::debug('Store return message:'.$result);
1.470     raeburn  1204:             &store_aggregates($symb,$courseid);
1.159     albertel 1205: 	}
1.323     albertel 1206:     } else {
                   1207: 	&Apache::lonxml::debug('Nothing to store');
1.67      albertel 1208:     }
1.159     albertel 1209:     return $result;
1.65      albertel 1210: }
                   1211: 
1.435     jms      1212: =pod
                   1213: 
1.512.2.9  raeburn  1214: =item check_correctness_changes()
                   1215: 
                   1216:         For all parts for which current results contain a solved status
                   1217:         of "incorrect_attempted", check if there was a transaction in which
                   1218:         solved was set to "correct_by_student" in the time since the last
                   1219:         transaction (retrieved when &initialize_storage() was called i.e.,
                   1220:         when &start_problem() was called), unless:
                   1221:         (a) questiontype parameter is set to survey or anonymous survey (+/- credit)
                   1222:         (b) problemstatus is set to no or no_feedback_ever
                   1223:         If such a transaction exists, and did not occur after "reset status"
                   1224:         by a user with grading privileges, then the current transaction is an
                   1225:         example of an out-of-order transaction (i.e., incorrect occurring after
                   1226:         correct).  Accordingly, the current transaction should be hidden.
                   1227: 
                   1228: =cut
                   1229: 
                   1230: 
                   1231: sub check_correctness_changes {
                   1232:     my ($symb,$courseid,$domain,$name,$record,$parts,$newversion,$oldversion) = @_;
                   1233:     my @parts_to_hide;
                   1234:     unless ((ref($record) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
                   1235:         return @parts_to_hide;
                   1236:     }
                   1237:     if (@{$parts}) {
                   1238:         my $usec;
                   1239:         if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
                   1240:             ($env{'request.course.id'} eq $courseid)) {
                   1241:             $usec = $env{'request.course.sec'};
                   1242:         } else {
                   1243:             $usec = &Apache::lonnet::getsection($domain,$name,$courseid);
                   1244:         }
                   1245:         foreach my $id (@{$parts}) {
                   1246:             next if (($Apache::lonhomework::results{'resource.'.$id.'.type'} =~ /survey/) ||
                   1247:                      (&Apache::lonnet::EXT("resource.$id.problemstatus",$symb,
                   1248:                                            $domain,$name,$usec,undef,$courseid) =~ /^no/));
                   1249:             my $reset;
                   1250:             for (my $i=$newversion-1; $i>=$oldversion; $i--) {
                   1251:                 if (($record->{$i.':resource.'.$id.'.regrader'}) &&
                   1252:                     ($record->{$i.':resource.'.$id.'.tries'} eq '') &&
                   1253:                     ($record->{$i.':resource.'.$id.'.award'} eq '')) {
                   1254:                     $reset = 1;
                   1255:                 } elsif (($record->{$i.":resource.$id.solved"} eq 'correct_by_student') &&
                   1256:                          ($record->{$i.":resource.$id.awarded"} >= 1)) {
                   1257:                     unless ($reset) {
                   1258:                         push(@parts_to_hide,$id);
                   1259:                         last;
                   1260:                     }
                   1261:                 }
                   1262:             }
                   1263:         }
                   1264:     }
                   1265:     return @parts_to_hide;
                   1266: }
                   1267: 
                   1268: =pod
                   1269: 
1.435     jms      1270: item store_aggregates()
                   1271: 
                   1272: 	Sends hash of values to be incremented in nohist_resourcetracker.db
                   1273: 	for the course. Increments total number of attempts, unique students 
                   1274: 	and corrects for each part for an instance of a problem, as appropriate.
                   1275: 	
                   1276: =cut
                   1277: 
1.285     raeburn  1278: sub store_aggregates {
                   1279:     my ($symb,$courseid) = @_;
1.479     raeburn  1280:     my (%aggregate,%anoncounter,%randtrycounter);
1.286     albertel 1281:     my @parts;
1.288     albertel 1282:     my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   1283:     my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286     albertel 1284:     foreach my $key (keys(%Apache::lonhomework::results)) {
1.287     albertel 1285:         if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286     albertel 1286:             push(@parts, $1);
1.285     raeburn  1287:         }
                   1288:     }
1.286     albertel 1289:     foreach my $part (@parts) {
1.470     raeburn  1290:         if ($env{'request.role'} =~/^st/) {
                   1291:             if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
                   1292: 	        eq 'APPROX_ANS' ||
                   1293: 	        $Apache::lonhomework::results{'resource.'.$part.'.award'}
                   1294: 	        eq 'EXACT_ANS') {
                   1295:                 $aggregate{$symb."\0".$part."\0correct"} = 1;
                   1296:             }
                   1297:             if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
                   1298:                 $aggregate{$symb."\0".$part."\0users"} = 1;
                   1299:             } else {
                   1300:                 my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]); 
                   1301:                 if ($last_reset) {
                   1302:                     if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
                   1303:                         $aggregate{$symb."\0".$part."\0users"} = 1;
                   1304:                     }
                   1305:                 }
                   1306:             }
                   1307:             $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285     raeburn  1308:         }
1.470     raeburn  1309:         if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') || 
1.479     raeburn  1310:             ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
                   1311:             ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
                   1312:             if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
                   1313:                 $randtrycounter{$symb."\0".$part} = 1;
                   1314:             } else {
                   1315:                 $anoncounter{$symb."\0".$part} = 1;
                   1316:             }
1.470     raeburn  1317:             my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
                   1318:             if ($needsrelease) {   
                   1319:                 my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
                   1320:                 if ($curr_required eq '') {
1.471     raeburn  1321:                     &Apache::lonnet::update_released_required($needsrelease);
1.470     raeburn  1322:                 } else {
                   1323:                     my ($currmajor,$currminor) = split(/\./,$curr_required);
                   1324:                     my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
                   1325:                     if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471     raeburn  1326:                         &Apache::lonnet::update_released_required($needsrelease);
1.470     raeburn  1327:                     }
1.292     raeburn  1328:                 }
                   1329:             }
1.285     raeburn  1330:         }
                   1331:     }
1.512.2.9  raeburn  1332:     if (keys(%aggregate) > 0) {
1.289     albertel 1333: 	&Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292     raeburn  1334:                             $cdomain,$cname);
                   1335:     }
1.472     raeburn  1336:     if (keys(%anoncounter) > 0) {
1.481     raeburn  1337:         &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
                   1338:                               $cdomain,$cname);
1.472     raeburn  1339:     }
1.479     raeburn  1340:     if (keys(%randtrycounter) > 0) {
1.481     raeburn  1341:         &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
                   1342:                               $cdomain,$cname);
1.479     raeburn  1343:     }
1.292     raeburn  1344: }
1.289     albertel 1345: 
1.65      albertel 1346: sub checkout_msg {
1.211     albertel 1347:     my %lt=&Apache::lonlocal::texthash( 
                   1348: 		'resource'=>'The resource needs to be checked out',
                   1349: 		'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.',
                   1350:                 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
1.512.2.1  raeburn  1351:                 'checkout'=>'Check out Exam for Viewing',
                   1352: 		'checkout?'=>'Check out Exam?');
1.352     albertel 1353:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159     albertel 1354:     return (<<ENDCHECKOUT);
1.211     albertel 1355: <h2>$lt{'resource'}</h2>
                   1356:     <p>$lt{'id_expln'}</p>
1.449     bisitz   1357: <p class="LC_warning">$lt{'warning'}</p>
1.444     bisitz   1358: <form name="checkout" method="post" action="$uri">
1.91      albertel 1359: <input type="hidden" name="doescheckout" value="yes" />
1.512.2.4  raeburn  1360: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onclick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65      albertel 1361: </form>
                   1362: ENDCHECKOUT
                   1363: }
                   1364: 
1.252     albertel 1365: sub firstaccess_msg {
1.253     albertel 1366:     my ($time,$symb)=@_;
1.414     albertel 1367:     my $result;
                   1368:     my @interval=&Apache::lonnet::EXT("resource.0.interval");
                   1369:     if ($interval[1] eq 'map') {
                   1370: 	my ($map)=&Apache::lonnet::decode_symb($symb);
                   1371: 	my $foldertitle=&Apache::lonnet::gettitle($map);
                   1372:     
                   1373: 	&Apache::lonxml::debug("map is $map title is $foldertitle");
1.504     golterma 1374: 	$result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$foldertitle)."</h2>"
                   1375:                              .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
                   1376:                              ,$foldertitle,$time)."</p>";
1.414     albertel 1377:     } elsif ($interval[1] eq 'course') {
                   1378: 	my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.504     golterma 1379:         $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$course)."</h2>"
1.505     golterma 1380:                              .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1.504     golterma 1381:                              ,$course,$time)."</p>";
1.414     albertel 1382:     } else {
                   1383: 	my $title=&Apache::lonnet::gettitle($symb);
1.504     golterma 1384:         $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.',$title)."</h2>"
                   1385:                              .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
                   1386:                              ,$title,$time)."</p>";
1.414     albertel 1387:     }
1.352     albertel 1388:     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418     bisitz   1389:     my $buttontext = &mt('Show Resource');
                   1390:     my $timertext = &mt('Start Timer?');
1.414     albertel 1391:     $result .= (<<ENDCHECKOUT);
1.444     bisitz   1392: <form name="markaccess" method="post" action="$uri">
1.252     albertel 1393: <input type="hidden" name="markaccess" value="yes" />
1.512.2.4  raeburn  1394: <input type="button" name="accessbutton" value="$buttontext" onclick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252     albertel 1395: </form>
                   1396: ENDCHECKOUT
1.414     albertel 1397:     return $result;
1.252     albertel 1398: }
                   1399: 
1.204     albertel 1400: sub init_problem_globals {
                   1401:     my ($type)=@_;
                   1402:     #initialize globals
1.308     foxr     1403:     #   For problems, we start out in part 0 (outside a <part> tag).
                   1404:     #   and part 0 is used to describe the main body of the <problem>
                   1405:     #
1.204     albertel 1406:     if ($type eq 'problem') {
                   1407: 	$Apache::inputtags::part='0';
                   1408: 	@Apache::inputtags::partlist=('0');
1.405     albertel 1409: 	&Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266     albertel 1410: 	$Apache::lonhomework::ignore_response_errors=0;
1.308     foxr     1411: 
1.266     albertel 1412:     } elsif ($type eq 'library') {
1.204     albertel 1413: 	$Apache::inputtags::part='';
                   1414: 	@Apache::inputtags::partlist=();
1.405     albertel 1415: 	&Apache::lonhomework::reset_show_problem_status();
1.266     albertel 1416: 	$Apache::lonhomework::ignore_response_errors=1;
1.308     foxr     1417: 
1.304     albertel 1418:     } elsif ($type eq 'Task') {
                   1419: 	$Apache::inputtags::part='0';
                   1420: 	@Apache::inputtags::partlist=('0');
1.405     albertel 1421: 	&Apache::lonhomework::reset_show_problem_status();
1.304     albertel 1422: 	$Apache::lonhomework::ignore_response_errors=1;
1.204     albertel 1423:     }
1.477     www      1424:     @Apache::functionplotresponse::callscripts=();
1.204     albertel 1425:     @Apache::inputtags::responselist = ();
                   1426:     @Apache::inputtags::importlist = ();
                   1427:     @Apache::inputtags::previous=();
                   1428:     @Apache::inputtags::previous_version=();
1.512.2.10  raeburn  1429:     $Apache::inputtags::leniency='';
1.204     albertel 1430:     $Apache::structuretags::printanswer='No';
                   1431:     @Apache::structuretags::whileconds=();
                   1432:     @Apache::structuretags::whilebody=();
                   1433:     @Apache::structuretags::whileline=();
                   1434:     $Apache::lonhomework::scantronmode=0;
1.512.2.21  raeburn  1435:     $Apache::lonhomework::randomizetrypart=0;
1.204     albertel 1436:     undef($Apache::lonhomework::name);
1.358     albertel 1437:     undef($Apache::lonhomework::default_type);
                   1438:     undef($Apache::lonhomework::type);
1.204     albertel 1439: }
                   1440: 
                   1441: sub reset_problem_globals {
                   1442:     my ($type)=@_;
                   1443:     undef(%Apache::lonhomework::history);
                   1444:     undef(%Apache::lonhomework::results);
                   1445:     undef($Apache::inputtags::part);
1.512.2.10  raeburn  1446:     undef($Apache::inputtags::leniency);
1.498     raeburn  1447:     if ($type eq 'Task') {
                   1448:         undef($Apache::inputtags::slot_name);
1.512.2.9  raeburn  1449:     } elsif ($type eq 'problem') {
                   1450:         undef($Apache::lonhomework::rawrndseed);
1.498     raeburn  1451:     }
1.208     albertel 1452: #don't undef this, lonhomework.pm takes care of this, we use this to 
                   1453: #detect if we try to do 2 problems in one file
                   1454: #   undef($Apache::lonhomework::parsing_a_problem);
1.204     albertel 1455:     undef($Apache::lonhomework::name);
1.358     albertel 1456:     undef($Apache::lonhomework::default_type);
                   1457:     undef($Apache::lonhomework::type);
                   1458:     undef($Apache::lonhomework::scantronmode);
1.512.2.21  raeburn  1459:     undef($Apache::inputtags::randomizetrypart);
1.358     albertel 1460:     undef($Apache::lonhomework::ignore_response_errors);
1.477     www      1461:     undef(@Apache::functionplotresponse::callscripts);
1.405     albertel 1462:     &Apache::lonhomework::reset_show_problem_status();
1.204     albertel 1463: }
                   1464: 
1.241     albertel 1465: sub set_problem_state {
1.240     albertel 1466:     my ($part)=@_;
1.284     albertel 1467:     if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240     albertel 1468: 	$Apache::lonhomework::history{"resource.$part.solved"}=
                   1469: 	    'correct_by_student';
                   1470:     }
                   1471: }
                   1472: 
1.241     albertel 1473: sub get_problem_status {
                   1474:     my ($part)=@_;
1.267     albertel 1475:     my $problem_status;
1.284     albertel 1476:     if ($env{'request.state'} eq 'construct' &&
                   1477: 	defined($env{'form.problemstatus'})) {
                   1478: 	$problem_status=$env{'form.problemstatus'};
1.267     albertel 1479:     } else {
                   1480: 	$problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
                   1481: 	&Apache::lonxml::debug("problem status for $part is $problem_status");
1.284     albertel 1482: 	&Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241     albertel 1483:     }
                   1484:     return $problem_status;
                   1485: }
                   1486: 
1.9       albertel 1487: sub start_problem {
1.326     albertel 1488:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19      albertel 1489: 
1.311     foxr     1490:     # We'll use the redirection to fix up printing of duedates.
1.321     albertel 1491:     if (!$Apache::lonxml::metamode) {
                   1492: 	&Apache::lonxml::startredirection();
                   1493:     }
1.311     foxr     1494: 
1.308     foxr     1495:     # Problems don't nest and we don't allow more than one <problem> in
                   1496:     # a .problem file.
                   1497:     #
1.184     albertel 1498:     if ( $Apache::inputtags::part ne '' ||
                   1499: 	 $Apache::lonhomework::parsing_a_problem) {
                   1500: 	&Apache::lonxml::error('Only one &lt;problem&gt; allowed in a .problem file');
1.326     albertel 1501: 	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159     albertel 1502: 	return '';
                   1503:     }
1.184     albertel 1504: 
                   1505:     $Apache::lonhomework::parsing_a_problem=1;
1.204     albertel 1506:     &init_problem_globals('problem');
1.166     albertel 1507: 
1.284     albertel 1508:     if (defined($env{'scantron.maxquest'})) {
1.166     albertel 1509: 	$Apache::lonhomework::scantronmode=1;
                   1510:     }
1.161     albertel 1511: 
1.159     albertel 1512:     if ($target ne 'analyze') {
1.415     raeburn  1513:         my $type = &Apache::lonnet::EXT('resource.0.type');
                   1514: 	$Apache::lonhomework::type=$type;
1.284     albertel 1515: 	if (($env{'request.state'} eq 'construct') &&
1.410     albertel 1516: 	    $env{'form.problemtype'} =~ /\S/) {
1.284     albertel 1517: 	    $Apache::lonhomework::type=$env{'form.problemtype'};
1.237     albertel 1518: 	}
1.332     albertel 1519: 	&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159     albertel 1520:     }
1.164     albertel 1521:     if ($Apache::lonhomework::type eq '' ) {
1.284     albertel 1522: 	my $uri=$env{'request.uri'};
1.159     albertel 1523: 	if ($uri=~/\.(\w+)$/) {
                   1524: 	    $Apache::lonhomework::type=$1;
                   1525: 	    &Apache::lonxml::debug("Using type of $1");
                   1526: 	} else {
                   1527: 	    $Apache::lonhomework::type='problem';
                   1528: 	    &Apache::lonxml::debug("Using default type, problem, :$uri:");
                   1529: 	}
1.87      albertel 1530:     }
1.301     albertel 1531:     $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58      www      1532: 
1.363     albertel 1533:     &initialize_storage();
1.389     albertel 1534:     if ($target ne 'analyze'
                   1535:        	&& $env{'request.state'} eq 'construct') {
                   1536: 	&set_problem_state('0');
                   1537:     }
                   1538: 
1.366     albertel 1539:     if ($target eq 'web') {
                   1540: 	&Apache::lonxml::debug(" grading history ");
                   1541: 	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
                   1542:     }
1.363     albertel 1543: 
1.159     albertel 1544:     #added vars to the scripting enviroment
1.213     albertel 1545:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248     albertel 1546:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24      albertel 1547:     &Apache::run::run($expression,$safeeval);
1.159     albertel 1548:     my $status;
                   1549:     my $accessmsg;
1.508     raeburn  1550:     my $resource_due;
1.159     albertel 1551: 
1.343     albertel 1552:     my $name= &get_resource_name($parstack,$safeeval);
1.512.2.16  raeburn  1553:     my ($result,$form_tag_start,$slot_name,$slot,$probpartlist,$firstaccres);
1.506     raeburn  1554: 
                   1555:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1556:         $target eq 'tex') {
                   1557:         if ($env{'form.markaccess'}) {
                   1558:             my @interval=&Apache::lonnet::EXT("resource.0.interval");
1.512.2.16  raeburn  1559:             my $is_set = &Apache::lonnet::set_first_access($interval[1],$interval[0]);
                   1560:             unless (($is_set eq 'ok') || ($is_set eq 'already_set')) {
                   1561:                 $firstaccres = $is_set;
                   1562:             }
1.506     raeburn  1563:         }
                   1564: 
                   1565:         ($status,$accessmsg,$slot_name,$slot) =
                   1566:             &Apache::lonhomework::check_slot_access('0','problem');
                   1567:         push (@Apache::inputtags::status,$status);
                   1568:     }
                   1569: 
1.354     albertel 1570:     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
                   1571: 	|| $target eq 'edit') {
1.512.2.9  raeburn  1572: 	($result,$form_tag_start,$probpartlist) =
1.350     albertel 1573: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   1574: 			$name);
1.512.2.9  raeburn  1575:     } elsif (($target eq 'grade') && ($Apache::lonhomework::type eq 'randomizetry')) {
                   1576:         my ($symb)= &Apache::lonnet::whichuser();
1.512.2.22! raeburn  1577:         if ($symb ne '') {
        !          1578:             my $navmap = Apache::lonnavmaps::navmap->new();
        !          1579:             if (ref($navmap)) {
        !          1580:                 my $res = $navmap->getBySymb($symb);
        !          1581:                 if (ref($res)) {
        !          1582:                     $probpartlist = $res->parts();
        !          1583:                 }
1.512.2.9  raeburn  1584:             }
                   1585:         }
1.350     albertel 1586:     }
                   1587: 
1.284     albertel 1588:     if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159     albertel 1589: 
1.479     raeburn  1590:     if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159     albertel 1591:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   1592: 	$target eq 'tex') {
1.479     raeburn  1593: 
1.512.2.22! raeburn  1594:         my ($symb) = &Apache::lonnet::whichuser();
1.159     albertel 1595: 	#handle rand seed in construction space
1.512.2.22! raeburn  1596:         if (($env{'request.state'} eq 'construct') || ($symb eq '')) {
        !          1597:             my $partorder=&Apache::lonnet::metadata($env{'request.uri'},'partorder');
        !          1598:             if ($partorder ne '') {
        !          1599:                 @{$probpartlist} = split(/,/,$partorder);
        !          1600:             }
        !          1601:         }
1.512.2.9  raeburn  1602: 	my $rndseed=&setup_rndseed($safeeval,$target,$probpartlist);
                   1603:         if (($target eq 'grade') && &Apache::response::submitted()) {
                   1604:             if ($Apache::lonhomework::type eq 'randomizetry') {
                   1605:                 $Apache::lonhomework::results{'resource.0.rndseed'}=$rndseed;
                   1606:             } else {
                   1607:                 my @parts;
                   1608:                 if (ref($probpartlist) eq 'ARRAY') {
                   1609:                     @parts = @{$probpartlist};
                   1610:                 }
                   1611:                 unless (@parts) {
                   1612:                     $Apache::lonhomework::results{'resource.0.rndseed'}=$Apache::lonhomework::rawrndseed;
                   1613:                 }
                   1614:             }
                   1615:         }
1.479     raeburn  1616: 
1.333     albertel 1617: 	if ($env{'request.state'} ne "construct" && 
                   1618: 	    ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.512.2.20  raeburn  1619:             my $rndseedval = $rndseed;
                   1620:             if (($symb eq '') && ($Apache::lonhomework::type eq 'randomizetry')) {
                   1621:                 $rndseedval = $env{'form.rndseed'};
                   1622:             }
1.162     albertel 1623: 	    $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.512.2.20  raeburn  1624: 		$rndseedval.'" />'.
1.462     raeburn  1625: 		    '<input type="submit" name="resetdata"
                   1626:                              value="'.&mt('New Problem Variation').'" />';
1.334     albertel 1627: 	    if (exists($env{'form.username'})) {
                   1628: 		$form_tag_start.=
1.164     albertel 1629: 		    '<input type="hidden" name="username"
1.284     albertel 1630:                              value="'.$env{'form.username'}.'" />';
1.334     albertel 1631: 	    }
1.462     raeburn  1632: 	    if ($env{'request.role.adv'}) {
                   1633: 		$form_tag_start.= ' <label class="LC_nobreak">'
                   1634:                          .'<input type="checkbox" name="showallfoils"';
                   1635: 		if (defined($env{'form.showallfoils'})) {
                   1636: 		    $form_tag_start.=' checked="checked"';
                   1637: 		}
                   1638:                 $form_tag_start.= ' /> '
                   1639:                                  .&mt('Show All Foils')
                   1640:                                  .'</label>';
                   1641: 	    }
1.417     www      1642:             if ($Apache::lonhomework::type eq 'practice') {
1.428     raeburn  1643:                 $form_tag_start.=&practice_problem_header();
1.417     www      1644:             }
1.462     raeburn  1645: 	    $form_tag_start.='<hr />';
1.512.2.20  raeburn  1646:         }
                   1647:         if (($env{'request.state'} ne "construct") &&
                   1648:             ($Apache::lonhomework::type eq 'randomizetry') &&
                   1649:             ($status eq 'CAN_ANSWER')) {
1.512.2.21  raeburn  1650:             my @parts;
                   1651:             if (ref($probpartlist) eq 'ARRAY') {
                   1652:                 @parts = @{$probpartlist};
                   1653:             }
                   1654:             unless (@parts) {
                   1655:                 my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
                   1656:                 my $problemstatus = &get_problem_status($Apache::inputtags::part);
                   1657:                 $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries,$symb);
                   1658:             }
1.479     raeburn  1659:         }
1.324     albertel 1660: 
1.159     albertel 1661: 	my $expression='$external::datestatus="'.$status.'";';
                   1662: 	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
                   1663: 	&Apache::run::run($expression,$safeeval);
                   1664: 	&Apache::lonxml::debug("Got $status");
1.324     albertel 1665: 
1.159     albertel 1666: 	if (( $status eq 'CLOSED' ) ||
                   1667: 	    ( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 1668: 	    ( $status eq 'NOT_YET_VIEWED') ||
1.159     albertel 1669: 	    ( $status eq 'BANNED') ||
1.216     albertel 1670: 	    ( $status eq 'UNAVAILABLE') ||
1.324     albertel 1671: 	    ( $status eq 'NOT_IN_A_SLOT') ||
1.499     raeburn  1672:             ( $status eq 'NOTRESERVABLE') ||
                   1673:             ( $status eq 'RESERVABLE') ||
                   1674:             ( $status eq 'RESERVABLE_LATER') ||
1.216     albertel 1675: 	    ( $status eq 'INVALID_ACCESS')) {
1.326     albertel 1676: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                   1677: 						       $style);
1.159     albertel 1678: 	    if ( $target eq "web" ) {
1.343     albertel 1679: 		my $msg;
1.159     albertel 1680: 		if ($status eq 'UNAVAILABLE') {
1.504     golterma 1681: 		    $msg.='<p class="LC_error">'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</p>';
1.441     raeburn  1682:                 } elsif ($status eq 'NOT_IN_A_SLOT') {
1.504     golterma 1683:                     $msg.='<p class="LC_warning">'.&mt('You are not currently signed up to work at this time and/or place.').'</p>';
1.499     raeburn  1684:                 } elsif (($status eq 'RESERVABLE') || ($status eq 'RESERVABLE_LATER') ||
                   1685:                          ($status eq 'NOTRESERVABLE')) {
1.504     golterma 1686:                     $msg.='<p class="LC_warning">'.&mt('Access requires reservation to work at specific time/place.').'</p>';
1.253     albertel 1687: 		} elsif ($status ne 'NOT_YET_VIEWED') {
1.504     golterma 1688: 		    $msg.='<p class="LC_warning">'.&mt('Not open to be viewed').'</p>';
1.499     raeburn  1689:                 }
1.216     albertel 1690: 		if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393     www      1691: 		    $msg.=&mt('The problem ').$accessmsg;
1.159     albertel 1692: 		} elsif ($status eq 'UNCHECKEDOUT') {
1.343     albertel 1693: 		    $msg.=&checkout_msg();
1.252     albertel 1694: 		} elsif ($status eq 'NOT_YET_VIEWED') {
1.512.2.16  raeburn  1695:                     if ($firstaccres) {
                   1696:                         $msg .= '<p class="LC_error">'.
                   1697:                                 &mt('A problem occurred when trying to start the timer.').'</p>';
                   1698:                     }
1.253     albertel 1699: 		    $msg.=&firstaccess_msg($accessmsg,$symb);
1.325     albertel 1700: 		} elsif ($status eq 'NOT_IN_A_SLOT') {
1.441     raeburn  1701: 		    $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.499     raeburn  1702:                 } elsif ($status eq 'RESERVABLE') {
                   1703:                     $msg.=&mt('Available to make a reservation.').' '.&mt('Reservation window closes [_1].',
                   1704:                               &Apache::lonnavmaps::timeToHumanString($accessmsg,'end')).
                   1705:                           '<br />'.
                   1706:                           &Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
                   1707:                 } elsif ($status eq 'RESERVABLE_LATER') {
                   1708:                     $msg.=&mt('Window to make a reservation will open [_1].',
                   1709:                               &Apache::lonnavmaps::timeToHumanString($accessmsg,'start'));
                   1710:                 } elsif ($status eq 'NOTRESERVABLE') {
                   1711:                     $msg.=&mt('Not available to make a reservation.');  
1.159     albertel 1712: 		}
                   1713: 		$result.=$msg.'<br />';
                   1714: 	    } elsif ($target eq 'tex') {
1.332     albertel 1715: 		my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
                   1716: 		                    : '\begin{minipage}{\textwidth}';
1.443     foxr     1717: 		$result.='\noindent \vskip 1 mm '.
1.332     albertel 1718: 		    $startminipage.'\vskip 0 mm';
1.159     albertel 1719: 		if ($status eq 'UNAVAILABLE') {
1.211     albertel 1720: 		    $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159     albertel 1721: 		} else {
1.211     albertel 1722: 		    $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159     albertel 1723: 		}
                   1724: 	    }
1.324     albertel 1725: 	} elsif ($status eq 'NEEDS_CHECKIN') {
1.326     albertel 1726: 	    my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
                   1727: 						       $style);
1.324     albertel 1728: 	    if ($target eq 'web') {
1.375     albertel 1729: 		$result .= 
                   1730: 		    &Apache::bridgetask::proctor_validation_screen($slot);
1.324     albertel 1731: 	    } elsif ($target eq 'grade') {
                   1732: 		&Apache::bridgetask::proctor_check_auth($slot_name,$slot,
                   1733: 							'problem');
                   1734: 	    }
1.159     albertel 1735: 	} elsif ($target eq 'web') {
1.508     raeburn  1736: 	    if ($status eq 'CAN_ANSWER') {
                   1737:                 $resource_due = &Apache::lonhomework::due_date(0, $env{'request.symb'});
                   1738:                 if ($slot_name ne '') {
                   1739:                     my $checked_in =
                   1740:                         $Apache::lonhomework::history{'resource.0.checkedin'};
                   1741:                     if ($checked_in eq '') {
                   1742:                         # unproctored slot access, self checkin
                   1743:                         &Apache::bridgetask::check_in('problem',undef,undef,
                   1744:                                                       $slot_name);
                   1745:                         $checked_in =
                   1746:                             $Apache::lonhomework::results{"resource.0.checkedin"};
                   1747:                     }
                   1748:                     if ((ref($slot) eq 'HASH') && ($checked_in ne '')) {
                   1749:                         if ($slot->{'starttime'} < time()) {
                   1750:                             if (!$resource_due) {
                   1751:                                 $resource_due = $slot->{'endtime'};
                   1752:                             } elsif ($slot->{'endtime'} < $resource_due) {
                   1753:                                 $resource_due = $slot->{'endtime'};
                   1754:                             }
                   1755:                         }
                   1756:                     }
                   1757:                 }
                   1758:                 if ($resource_due) {
                   1759:                     my $time_left = $resource_due - time();
                   1760:                     if ($resource_due && ($time_left > 0) && ($target eq 'web')) {
                   1761:                         $result .= &Apache::lonhtmlcommon::set_due_date($resource_due);
                   1762:                     }
                   1763:                 }
                   1764:             }
1.368     albertel 1765: 	    $result.="\n $form_tag_start \t".	
1.227     albertel 1766: 	      '<input type="hidden" name="submitted" value="yes" />';
                   1767: 	    # create a page header and exit
1.284     albertel 1768: 	    if ($env{'request.state'} eq "construct") {
                   1769: 		$result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428     raeburn  1770:                 if ($Apache::lonhomework::type eq 'practice') {
                   1771:                     $result.= '<input type="submit" name="resetdata" '.
                   1772:                               'value="'.&mt('New Problem Variation').'" />'.
                   1773:                               &practice_problem_header().'<hr />';
1.512.2.19  raeburn  1774:                 } elsif ($Apache::lonhomework::type eq 'randomizetry') {
                   1775:                     my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
                   1776:                     my $problemstatus = &get_problem_status($Apache::inputtags::part);
                   1777:                     $result.=&randomizetry_problem_header($problemstatus,$reqtries);
1.428     raeburn  1778:                 }
1.227     albertel 1779: 	    }
                   1780: 	    # if we are viewing someone else preserve that info
1.284     albertel 1781: 	    if (defined $env{'form.grade_symb'}) {
1.227     albertel 1782: 		foreach my $field ('symb','courseid','domain','username') {
                   1783: 		    $result .= '<input type="hidden" name="grade_'.$field.
1.284     albertel 1784: 			'" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159     albertel 1785: 		}
1.479     raeburn  1786:                 foreach my $field ('trial','questiontype') {
                   1787:                     if ($env{"form.grade_$field"} ne '') {
                   1788:                         $result .= '<input type="hidden" name="grade_'.$field.
                   1789:                             '" value="'.$env{"form.grade_$field"}.'" />'."\n";
                   1790:                     }
                   1791:                 }
1.159     albertel 1792: 	    }
1.490     raeburn  1793:             if ($env{'form.grade_imsexport'}) {
                   1794:                 $result = '';
                   1795:             }
1.159     albertel 1796: 	} elsif ($target eq 'tex') {
1.319     foxr     1797: 	    $result .= 'INSERTTEXFRONTMATTERHERE';
1.500     foxr     1798: 	    $result .= &select_metadata_hyphenation();
                   1799: 	    
1.319     foxr     1800: 
1.99      sakharuk 1801: 	}
1.159     albertel 1802:     } elsif ($target eq 'edit') {
1.343     albertel 1803: 	$result .= $form_tag_start.&problem_edit_header();
1.226     albertel 1804: 	$Apache::lonxml::warnings_error_header=
                   1805: 	    &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 1806: 	my $temp=&Apache::edit::insertlist($target,$token);
                   1807: 	$result.=$temp;
                   1808:     } elsif ($target eq 'modified') {
                   1809: 	$result=$token->[4];
                   1810:     } else {
                   1811: 	# page_start returned a starting result, delete it if we don't need it
                   1812: 	$result = '';
1.99      sakharuk 1813:     }
1.159     albertel 1814:     return $result;
1.9       albertel 1815: }
                   1816: 
                   1817: sub end_problem {
1.159     albertel 1818:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321     albertel 1819:     my $result;
1.310     foxr     1820: 
1.321     albertel 1821:     if (!$Apache::lonxml::metamode) {
                   1822: 	$result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329     albertel 1823: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel 1824:     }
1.319     foxr     1825: 
                   1826:     if ($target eq 'tex') {
1.321     albertel 1827: 	# Figure out the front matter and replace the
                   1828: 	# INSERTTEXFRONTMATTERHERE in result with it.  note that we do
                   1829: 	# this in end_problem because whether or not we display due
                   1830: 	# dates depends on whether due dates have already been
                   1831: 	# displayed in the problem parts.
                   1832: 
1.319     foxr     1833: 	my $frontmatter   = '';
                   1834: 	my $startminipage = '';
                   1835: 	if (not $env{'form.problem_split'}=~/yes/) {
                   1836: 	    $startminipage = '\begin{minipage}{\textwidth}';
                   1837: 	}
                   1838: 	my $id = $Apache::inputtags::part;
                   1839: 	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
                   1840: 	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9  raeburn  1841: 	my @packages = split(/,/,$packages);
1.319     foxr     1842: 	my $allow_print_points = 0;
                   1843: 	foreach my $partial_key (@packages) {
                   1844: 	    if ($partial_key=~m/^part_0$/) {
                   1845: 		$allow_print_points=1;
                   1846: 	    }
                   1847: 	}
                   1848: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   1849: 	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
                   1850: 	if (lc($env{'course.'.$env{'request.course.id'}.
                   1851: 			'.disableexampointprint'}) eq 'yes') {
                   1852: 	    $allow_print_points=0;
                   1853: 	}
                   1854: 	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443     foxr     1855: 	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     1856: 	&clear_required_languages();
1.319     foxr     1857: 	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
                   1858: 	    '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
                   1859: 	
                   1860: 	#  Figure out what the due date is and if we need to print
                   1861: 	#  it in the problem header.  We have been logging the
                   1862: 	#  last due date written to file. 
                   1863: 	
                   1864: 	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate"); 
                   1865: 	my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448     bisitz   1866:         my $duedate_text = &mt('Due date: [_1]'
                   1867:                               ,&Apache::lonlocal::locallocaltime($duetime));
1.319     foxr     1868: 	my $temp_file;
                   1869: 	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
                   1870: 	
                   1871: 	# Figure out what the last printed due date is or set it
                   1872: 	# to the epoch if no duedates have been printed.
                   1873: 	
                   1874: 	my $due_file_content = 0;      #   If the file does not yet exist, time is the epoch.
                   1875: 	if (-e $filename) {
                   1876: 	    $temp_file = Apache::File->new($filename);
                   1877: 	    my @due_file      = <$temp_file>;
                   1878: 	    $due_file_content = $due_file[$#due_file];
                   1879: 	    chomp $due_file_content;
                   1880: 	} 
                   1881: 	
                   1882: 	# We display the due date iff it is not the same as the last
                   1883: 	# duedate in problem header ($due_file_content), and
                   1884: 	# none of our parts displayed a duedate.
                   1885: 	#
                   1886: 	my $parts_with_displayduedate;
                   1887: 	if (defined $Apache::outputtags::showonce{'displayduedate'}) {
                   1888: 	    $parts_with_displayduedate = 
                   1889: 		scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
                   1890: 	} else {
                   1891: 	    $parts_with_displayduedate = 0;
                   1892: 	}
                   1893: 	if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
                   1894: 	    $temp_file = Apache::File->new('>'.$filename);
                   1895: 	    print $temp_file "$duetime\n";
                   1896: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                   1897: 		if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
                   1898: 		    $frontmatter .= $begin_doc.
1.448     bisitz   1899: 			'\textit{'.$duedate_text.'} '.$toc_line;
1.319     foxr     1900: 		} else {
                   1901: 		    $frontmatter.= $begin_doc.$toc_line;
1.463     foxr     1902: 		    if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { 
1.492     christia 1903: 			$frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463     foxr     1904: 		    }
1.319     foxr     1905: 		}
                   1906: 	    } else {
1.448     bisitz   1907: 		$frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319     foxr     1908: 	    }
                   1909: 	} else {
                   1910: 	    if (not $env{'request.symb'} =~ m/\.page_/) {
                   1911: 		$frontmatter .= $begin_doc.$toc_line;
1.463     foxr     1912: 		if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { 
1.492     christia 1913: 		    $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463     foxr     1914: 		}
1.319     foxr     1915: 	    } else {
1.381     albertel 1916: 		$frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319     foxr     1917: 	    }
                   1918: 	}
                   1919: 	$result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
                   1920:     }
                   1921: 
1.159     albertel 1922:     my $status=$Apache::inputtags::status['-1'];
                   1923:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                   1924: 	$target eq 'tex') {
1.249     albertel 1925: 	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159     albertel 1926: 	    # if part is zero, no <part>s existed, so we need to the grading
1.249     albertel 1927: 	    if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
                   1928: 		&Apache::inputtags::grade;
1.324     albertel 1929: 	    } elsif ($status eq 'NEEDS_CHECKIN') {
                   1930: 		# no need to grade, and don't want to hide data
1.249     albertel 1931: 	    } else {
                   1932: 		# move any submission data to .hidden
                   1933: 		&Apache::inputtags::hidealldata($Apache::inputtags::part);
                   1934: 	    }
1.159     albertel 1935: 	} elsif ( ($target eq 'web' || $target eq 'tex') &&
                   1936: 		  $Apache::inputtags::part eq '0' &&
1.490     raeburn  1937: 		  $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED'
                   1938:                   && !$env{'form.grade_imsexport'}) {
1.159     albertel 1939: 	    # if part is zero, no <part>s existed, so we need show the current
                   1940: 	    # grading status
                   1941: 	    my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
                   1942: 	    $result.= $gradestatus;
                   1943: 	}
                   1944: 	if (
1.284     albertel 1945: 	    (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159     albertel 1946: 	    ($target eq 'answer') || ($target eq 'tex')
                   1947: 	   ) {
1.490     raeburn  1948: 	    if (($target ne 'tex') &&
                   1949: 		($env{'form.answer_output_mode'} ne 'tex') && 
                   1950:                 (!$env{'form.grade_imsexport'})) {
1.254     www      1951: 		$result.="</form>";
1.159     albertel 1952: 	    }
                   1953: 	    if ($target eq 'web') {
1.507     raeburn  1954:                 #
                   1955:                 # Closing </body></html> not added by end_page().
                   1956:                 # Added separately at end of this routine, after added
                   1957:                 # <script></script> so document will be valid xhtml.
                   1958:                 #
                   1959: 		$result.= &Apache::loncommon::end_page({'discussion' => 1,
                   1960: 							'notbody'    => 1});
1.159     albertel 1961: 	    } elsif ($target eq 'tex') {
1.178     sakharuk 1962: 		my $endminipage = '';
1.284     albertel 1963: 		if (not $env{'form.problem_split'}=~/yes/) {
1.178     sakharuk 1964: 		    $endminipage = '\end{minipage}';
                   1965: 		}
1.284     albertel 1966:                 if ($env{'form.print_discussions'} eq 'yes') {
1.263     sakharuk 1967: 		    $result.=&Apache::lonxml::xmlend($target,$parser);
1.159     albertel 1968: 		} else {
1.262     sakharuk 1969: 		    $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284     albertel 1970: 		    if (not $env{'request.symb'} =~ m/\.page_/) {
1.262     sakharuk 1971: 			$result .= $endminipage.'\end{document} ';
                   1972: 		    } else {
1.382     albertel 1973: 			$result .= $endminipage;
1.262     sakharuk 1974: 		    }
1.159     albertel 1975: 		}
                   1976: 	    }
                   1977: 	}
1.476     www      1978:         if ($target eq 'web') {
1.512.2.21  raeburn  1979:             $result.=&Apache::functionplotresponse::init_script();
                   1980:             if ($Apache::lonhomework::default_type eq 'randomizetry') {
                   1981:                 my ($symb) = &Apache::lonnet::whichuser();
                   1982:                 if ((($env{'request.state'} eq 'construct') || ($symb eq '')) &&
                   1983:                     ($status eq 'CAN_ANSWER')) {
                   1984:                     unless (@Apache::inputtags::partlist > 1) {
                   1985:                         $result.= <<"ENDJS";
                   1986: <script type="text/javascript">
                   1987: // <![CDATA[
                   1988:     \$(document).ready(function() {
                   1989:          \$('#LC_randomizetry_header').css('display','block');
                   1990:     });
                   1991: // ]]>
                   1992: </script>
                   1993: ENDJS
                   1994:                     }
                   1995:                 }
                   1996:             }
1.476     www      1997:         }
1.159     albertel 1998: 	if ($target eq 'grade') {
                   1999: 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
                   2000: 	    &finalize_storage();
                   2001: 	}
1.284     albertel 2002: 	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
                   2003: 	    && $env{'form.answer_output_mode'} ne 'tex') {
1.346     albertel 2004: 	    $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294     albertel 2005: 	                        # normally we get it from above, but in CSTR
1.172     albertel 2006: 	                        # we always show answer mode too.
1.159     albertel 2007: 	}
                   2008:     } elsif ($target eq 'meta') {
                   2009: 	if ($Apache::inputtags::part eq '0') {
1.179     albertel 2010: 	    @Apache::inputtags::response=();
1.159     albertel 2011: 	    $result=&Apache::response::mandatory_part_meta;
                   2012: 	}
1.215     albertel 2013: 	$result.=&Apache::response::meta_part_order();
1.258     albertel 2014: 	$result.=&Apache::response::meta_response_order();
1.159     albertel 2015:     } elsif ($target eq 'edit') {
                   2016: 	&Apache::lonxml::debug("in end_problem with $target, edit");
1.314     albertel 2017: 	$result .= &problem_edit_footer();
1.320     albertel 2018:     } elsif ($target eq 'modified') {
                   2019: 	 $result .= $token->[2];
1.159     albertel 2020:     }
1.155     albertel 2021: 
1.284     albertel 2022:     if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177     albertel 2023: 	&Apache::inputtags::check_for_duplicate_ids();
                   2024:     }
1.204     albertel 2025: 
                   2026:     &reset_problem_globals('problem');
1.159     albertel 2027: 
1.502     foxr     2028:     #
                   2029:     # This shouild be just above the return so that the
                   2030:     # time put in the javascript is as late as possible in the
                   2031:     # computation:
                   2032:     #
                   2033:     if ($target eq 'web') {
                   2034:         $result .= &Apache::lonhtmlcommon::set_compute_end_time();
1.507     raeburn  2035:         #
                   2036:         # Closing tags delayed so any <script></script> tags 
                   2037:         # not in head can appear inside body, for valid xhtml.
                   2038:         # 
                   2039:         $result .= "</body>\n</html>";
1.502     foxr     2040:     }
1.159     albertel 2041:     return $result;
1.48      albertel 2042: }
                   2043: 
1.108     albertel 2044: 
1.48      albertel 2045: sub start_library {
1.159     albertel 2046:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343     albertel 2047:     my ($result,$form_tag_start);
1.371     albertel 2048:     if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244     albertel 2049: 	&init_problem_globals('library');
                   2050: 	$Apache::lonhomework::type='problem';
                   2051:     }
1.159     albertel 2052:     if ($target eq 'edit') {
1.343     albertel 2053: 	($result,$form_tag_start)=
                   2054: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   2055: 			'Edit');
                   2056: 	$result.=$form_tag_start.&problem_edit_header();
1.159     albertel 2057: 	my $temp=&Apache::edit::insertlist($target,$token);
                   2058: 	$result.=$temp;
                   2059:     } elsif ($target eq 'modified') {
                   2060: 	$result=$token->[4];
1.340     albertel 2061:     } elsif (($target eq 'web' || $target eq 'webgrade')
1.371     albertel 2062: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340     albertel 2063: 	     && $env{'request.state'} eq "construct" ) {
1.159     albertel 2064: 	my $name=&get_resource_name($parstack,$safeeval);
1.343     albertel 2065: 	($result,$form_tag_start)=
                   2066: 	    &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
                   2067: 			$name);
1.479     raeburn  2068: 	my $rndseed=&setup_rndseed($safeeval,$target);
1.343     albertel 2069: 	$result.=" \n $form_tag_start".	
1.159     albertel 2070: 		  '<input type="hidden" name="submitted" value="yes" />';
                   2071: 	$result.=&problem_web_to_edit_header($rndseed);
1.428     raeburn  2072:         if ($Apache::lonhomework::type eq 'practice') {
                   2073:             $result.= '<input type="submit" name="resetdata" '.
                   2074:                       'value="'.&mt('New Problem Variation').'" />'.
                   2075:                       &practice_problem_header().'<hr />';
                   2076:         }
1.159     albertel 2077:     }
                   2078:     return $result;
1.48      albertel 2079: }
                   2080: 
                   2081: sub end_library {
1.159     albertel 2082:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2083:     my $result='';
                   2084:     if ($target eq 'edit') {
                   2085: 	$result=&problem_edit_footer();
1.371     albertel 2086:     } elsif ($target eq 'web' 
                   2087: 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library') 
                   2088: 	     && $env{'request.state'} eq "construct") {
1.349     albertel 2089: 	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.512.2.15  raeburn  2090:     } elsif ($target eq 'meta') {
                   2091:         $result.=&Apache::response::meta_response_order();
1.159     albertel 2092:     }
1.371     albertel 2093:     if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
                   2094: 	&reset_problem_globals('library');
                   2095:     }
1.159     albertel 2096:     return $result;
1.197     www      2097: }
                   2098: 
                   2099: sub start_definetag {
1.326     albertel 2100:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197     www      2101: 
                   2102:     my $result;
                   2103: 
                   2104:     my $name = $token->[2]->{'name'};
1.326     albertel 2105:     my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396     albertel 2106:     if ($target eq 'web') {
                   2107: 	if ($name=~/^\//) {
                   2108: 	    $result=
                   2109: 		'<br /><table class="LC_sty_end"><tr><th>'.
                   2110: 		&mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
                   2111: 	} else {
                   2112: 	    $result=
                   2113: 		'<br /><table class="LC_sty_begin"><tr><th>'.
                   2114: 		&mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
                   2115: 	}
                   2116: 	$skip = &HTML::Entities::encode($skip, '<>&"');
                   2117: 	$result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197     www      2118:     }
                   2119:     return $result;
                   2120: }
                   2121: 
                   2122: sub end_definetag {
                   2123:     return '';
1.1       albertel 2124: }
                   2125: 
                   2126: sub start_block {
1.201     albertel 2127:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131     albertel 2128: 
                   2129:     my $result;
1.1       albertel 2130: 
1.339     albertel 2131:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer'  ||
                   2132: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159     albertel 2133: 	my $code = $token->[2]->{'condition'};
1.385     albertel 2134: 	if (defined($code) && $code ne '') {
1.137     albertel 2135: 	    if (!$Apache::lonxml::default_homework_loaded) {
                   2136: 		&Apache::lonxml::default_homework_load($safeeval);
                   2137: 	    }
1.131     albertel 2138: 	    $result = &Apache::run::run($code,$safeeval);
                   2139: 	    &Apache::lonxml::debug("block :$code: returned :$result:");
                   2140: 	} else {
                   2141: 	    $result='1';
                   2142: 	}
                   2143: 	if ( ! $result ) {
1.201     albertel 2144: 	    my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131     albertel 2145: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   2146: 	}
                   2147: 	$result='';
                   2148:     } elsif ($target eq 'edit') {
                   2149: 	$result .=&Apache::edit::tag_start($target,$token);
                   2150: 	$result .=&Apache::edit::text_arg('Test Condition:','condition',
                   2151: 					  $token,40);
                   2152: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2153:     } elsif ($target eq 'modified') {
                   2154: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2155: 						     $safeeval,'condition');
                   2156: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38      albertel 2157:     }
1.131     albertel 2158:     return $result;
1.1       albertel 2159: }
                   2160: 
                   2161: sub end_block {
1.167     www      2162:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2163:     my $result;
                   2164:     if ($target eq "edit") {
                   2165: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   2166:     }
                   2167:     return $result;
                   2168: }
1.500     foxr     2169: #
                   2170: #  <languageblock [include='lang1,lang2...'] [exclude='lang1,lang2...']>
                   2171: #  ...
                   2172: #  </languageblock>
                   2173: #
                   2174: #   This declares the intent to provide content that can be rendered in the
                   2175: #   set of languages in the include specificatino but not in the exclude
                   2176: #   specification.  If a currently preferred language is in the include list
                   2177: #   the content in the <languageblock>...</languageblock> is rendered
                   2178: #   If the currently preferred language is in the exclude list,
                   2179: #   the content in the <languageblock>..></languageblock is not rendered.
                   2180: #
                   2181: #   Pathalogical case handling:
                   2182: #     - Include specified, without the preferred language but exclude  specified
                   2183: #       also without the preferred langauge results in rendering the block.
                   2184: #     - Exclude specified without include and excluden not containing a 
                   2185: #       preferred language renders the block.
                   2186: #     - Include and exclude both specifying the preferred language does not
                   2187: #       render the block.
                   2188: #     - If neither include/exclude is specified, the block gets rendered.
                   2189: #
                   2190: #  This tag has no effect when target is in {edit, modified}
                   2191: #
1.167     www      2192: sub start_languageblock {
1.201     albertel 2193:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167     www      2194: 
1.500     foxr     2195:     my $result = '';
1.167     www      2196: 
1.339     albertel 2197:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2198: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201     albertel 2199: 	my $include = $token->[2]->{'include'};
                   2200: 	my $exclude = $token->[2]->{'exclude'};
1.436     raeburn  2201:         my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.500     foxr     2202: 
                   2203:         # This should not even happen, since we should at least have the server language
                   2204: 
                   2205:         if (!$preferred_languages[0]) { 
                   2206: 	    $preferred_languages[0]='en'; 
                   2207: 	}
                   2208: 
                   2209:         # Now loop over all languages in order of preference
                   2210: 
                   2211: 	my $render;
1.398     www      2212:         foreach my $preferred_language (@preferred_languages) {
1.500     foxr     2213: 
                   2214: 	    # If neither include/nor exlude is present the block is going
                   2215: 	    # to get rendered.
                   2216: 
1.399     www      2217:            my $found=0;
1.500     foxr     2218:            $render=1;
                   2219: 
                   2220: 	   #  If include is specified,  don't render the block
                   2221: 	   #  unless the preferred language is included in the set.
                   2222: 
1.398     www      2223: 	   if ($include) {
1.500     foxr     2224:               $render=0;
1.398     www      2225:               foreach my $included_language (split(/\,/,$include)) {
                   2226:                  if ($included_language eq $preferred_language) {
1.500     foxr     2227:                     $render=1; 
1.399     www      2228:                     $found=1; 
1.500     foxr     2229: 		    last;	# Only need to find the first.
1.398     www      2230:                  }
                   2231:               }
                   2232: 	   }
1.500     foxr     2233:            # Do we have an exclude argument?
                   2234: 	   # If so, and one of the languages matches a preferred language
                   2235: 	   # inhibit rendering the block.  Note that in the pathalogical case the
                   2236: 	   # author has specified a preferred language in both the include and exclude
                   2237: 	   # attribte exclude is preferred.  
                   2238: 
1.398     www      2239:            if ($exclude) {
1.500     foxr     2240:               $render=1;
1.398     www      2241:               foreach my $excluded_language (split(/\,/,$exclude)) {
                   2242:                  if ($excluded_language eq $preferred_language) {
1.500     foxr     2243:                     $render=0;
1.399     www      2244:                     $found=1;
1.500     foxr     2245: 		    last;	# Only need to find the first.
1.398     www      2246:                  }
                   2247:               }
                   2248: 	   }
1.500     foxr     2249:            if ($found) { 
                   2250: 	       last; 		# Done on any match of include or exclude.
                   2251: 	   }
1.398     www      2252:         }
1.500     foxr     2253: 	# If $render not true skip the entire block until </languageblock>
                   2254: 	#
                   2255: 
                   2256: 	if ( ! $render ) {
1.201     albertel 2257: 	    my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
                   2258: 						   $style);
                   2259: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   2260: 	}
1.500     foxr     2261: 	# If $render is true, we've not skipped the contents of the <languageglock>
                   2262: 	# and the normal loncapa processing flow will render it as a matter of course.
                   2263: 
1.167     www      2264:     } elsif ($target eq 'edit') {
                   2265: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 2266: 	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167     www      2267: 					  $token,40);
1.211     albertel 2268: 	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167     www      2269: 					  $token,40);
                   2270: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2271:     } elsif ($target eq 'modified') {
                   2272: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168     albertel 2273: 						     $safeeval,'include',
                   2274: 						     'exclude');
1.167     www      2275: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   2276:     }
                   2277:     return $result;
                   2278: }
                   2279: 
                   2280: sub end_languageblock {
1.170     www      2281:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2282:     my $result;
1.201     albertel 2283:     if ($target eq "edit") {
1.170     www      2284: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   2285:     }
                   2286:     return $result;
                   2287: }
1.500     foxr     2288: #  languagblock specific tags:
                   2289: {
                   2290:     # For chunks of a resource that has translations, this hash contains
                   2291:     # the translations available indexed by language name.
                   2292:     #
                   2293: 
                   2294:     my %available_texts;       
1.170     www      2295: 
1.500     foxr     2296:     # <translated> starts a block of a resource that has multiple translations.
                   2297:     # See the <lang> tag as well.
                   2298:     # When </translated> is encountered if there is a translation for the 
                   2299:     # currently preferred language, that is rendered inthe web/tex/webgrade
                   2300:     # targets.  Otherwise, the default text is rendered.
                   2301:     #
                   2302:     # Note that <lang> is only registered for the duration of the 
                   2303:     #  <translated>...</translated> block 
                   2304:     #
                   2305:     # Pathalogical case handling:
                   2306:     #   - If there is no <lang> that specifies a 'default' and there is no
                   2307:     #     translation that matches a preferred language, nothing is rendered.
                   2308:     #   - Nested <translated>...</translated> might be linguistically supported by
                   2309:     #     XML due to the stack nature of tag registration(?) however the rendered
                   2310:     #     output will be incorrect because there is only one %available_texts
                   2311:     #     has and end_translated clears it.
                   2312:     #   - Material outside of a <lang>...</lang> block within the
                   2313:     #     <translated>...<translated> block won't render either e.g.:
                   2314:     #    <translated>
                   2315:     #      The following will be in your preferred langauge:
                   2316:     #      <lang which='en'>
                   2317:     #         This section in english
                   2318:     #      </lang>
                   2319:     #      <lang which='sgeiso'>
                   2320:     #         Hier es ist auf Deutsch.
                   2321:     #      </lang>
                   2322:     #      <lang which='sfriso'>
                   2323:     #         En Francais
                   2324:     #      </lang>
                   2325:     #    </translated>
                   2326:     #
                   2327:     #    The introductory text prior to the first <lang> tag is not rendered.
                   2328:     #
1.397     albertel 2329:     sub start_translated {
                   2330: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2331: 	&Apache::lonxml::register('Apache::structuretags',('lang'));
                   2332: 	undef(%available_texts);
                   2333:     }
                   2334:     
                   2335:     sub end_translated {
                   2336: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2337: 	my $result;
                   2338: 	#show the translation on viewable targets
                   2339: 	if ($target eq 'web'     || $target eq 'tex' || $target eq 'webgrade'||
                   2340: 	    # or non-viewable targets, if it's embedded in something that
                   2341: 	    # wants the output
                   2342: 	    (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
                   2343: 	     && &Apache::lonxml::in_redirection() ) ) {
                   2344: 	    my @possibilities = keys(%available_texts);
                   2345: 	    my $which = 
                   2346: 		&Apache::loncommon::languages(\@possibilities) || 'default';
1.500     foxr     2347: 	    if ($target eq 'tex') {
                   2348: 		$result = &select_hyphenation($which);
                   2349: 	    }
                   2350: 	    $result .= $available_texts{$which};
                   2351: 	    if ($target eq 'tex') {
                   2352: 		$result .= &select_metadata_hyphenation(); # Restore original language.
                   2353: 	    }
1.397     albertel 2354: 	}
                   2355: 	undef(%available_texts);
                   2356: 	&Apache::lonxml::deregister('Apache::structuretags',('lang'));
                   2357: 	return $result;
                   2358:     }
                   2359: 
1.500     foxr     2360:     # <lang [which='language-name'] [other='lang1,lang2...']>  
                   2361:     #  Specifies that the block contained within it is a translation 
                   2362:     #  for a specific language specified by the 'which' attribute. The
                   2363:     #   'other' attribute can be used by itself or in conjunction with
                   2364:     #   which to specify this tag _may_ be used as a translation for some
                   2365:     #   list of languages. e.g.:  <lang which='senisoUS' other='senisoCA,senisoAU,seniso'>
                   2366:     #   specifying that the block provides a translation for US (primary)
                   2367:     #   Canadian, Australian and UK Englush.
                   2368:     #   
                   2369:     # Comment: this seems a bit silly why not just support a list of languages
                   2370:     #           e.g. <lang which='l1,l2...'> and ditch the other attribute?
                   2371:     #
                   2372:     #  Effect:
                   2373:     #    The material within the <lang>..</lang> block is stored in the
                   2374:     #    specified set of $available_texts hash entries, the appropriate one
                   2375:     #    is selected at </translated> time.
                   2376:     #
                   2377:     #  Pathalogical case handling:
                   2378:     #    If a language occurs multiple times within a <translated> block,
                   2379:     #    only the last one is rendered e.g.:
                   2380:     #
                   2381:     #    <translated>
                   2382:     #       <lang which='senisoUS', other='senisoCA,senisoAU,seniso'>
                   2383:     #          Red green color blindness is quite common affecting about 7.8% of 
                   2384:     #          the male population, but onloy about .65% of the female population.
                   2385:     #       </lang>
                   2386:     #          Red green colour blindness is quite common affecting about 7.8% of 
                   2387:     #          the male population, but onloy about .65% of the female population.
                   2388:     #       <lang which='seniso', other='senisoCA,senisoAU'>
                   2389:     #     </translated>
                   2390:     #
                   2391:     #    renders the correct spelling of color (colour) for people who have specified
                   2392:     #    a preferred language that is one of the British Commonwealth languages
                   2393:     #    even though those are also listed as valid selections for the US english
                   2394:     #    <lang> block.
                   2395:     #
1.397     albertel 2396:     sub start_lang {
                   2397: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2398: 	if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2399: 	    $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
                   2400: 	    &Apache::lonxml::startredirection();
                   2401: 	}
                   2402: 	return '';
                   2403:     }
                   2404: 
                   2405:     sub end_lang {
                   2406: 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   2407: 	if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2408: 	    $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
                   2409: 	    my $result = &Apache::lonxml::endredirection();
                   2410: 	    my $which = &Apache::lonxml::get_param('which',$parstack,
                   2411: 						   $safeeval);
1.431     raeburn  2412:             if ($which=~/\w/) {
                   2413:                 $available_texts{$which} = $result;
                   2414:             }
                   2415:             my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
                   2416:                                                         $safeeval);
                   2417:             foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
                   2418:                 if ($language=~/\w/) {
                   2419:                     $available_texts{$language} = $result;
                   2420:                 }
1.427     bisitz   2421:             }
                   2422: 
1.397     albertel 2423: 	}
                   2424: 	return '';
                   2425:     }
1.500     foxr     2426: }				# end langauge block specific tags.
                   2427: 
1.397     albertel 2428: 
1.170     www      2429: sub start_instructorcomment {
1.201     albertel 2430:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170     www      2431: 
                   2432:     my $result;
                   2433: 
1.339     albertel 2434:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2435: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468     raeburn  2436:         $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284     albertel 2437: 	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201     albertel 2438: 	    my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
                   2439: 						   $parser,$style);
1.170     www      2440: 	    &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
                   2441: 	}
                   2442: 	$result='';
                   2443:     } elsif ($target eq 'edit') {
                   2444: 	$result .=&Apache::edit::tag_start($target,$token);
                   2445: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2446:     }
                   2447:     return $result;
                   2448: }
                   2449: 
                   2450: sub end_instructorcomment {
1.159     albertel 2451:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 2452:     my $result;
                   2453:     if ($target eq "edit") {
                   2454: 	$result.= &Apache::edit::tag_end($target,$token,'');
                   2455:     }
                   2456:     return $result;
1.4       tsai     2457: }
                   2458: 
                   2459: sub start_while {
1.326     albertel 2460:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2461: 
1.160     albertel 2462:     my $result;
1.339     albertel 2463:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2464: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 2465: 	my $code = $token->[2]->{'condition'};
1.4       tsai     2466: 
1.160     albertel 2467: 	push( @Apache::structuretags::whileconds, $code);
                   2468: 	if (!$Apache::lonxml::default_homework_loaded) {
                   2469: 	    &Apache::lonxml::default_homework_load($safeeval);
                   2470: 	}
                   2471: 	my $result = &Apache::run::run($code,$safeeval);
1.326     albertel 2472: 	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160     albertel 2473: 	push( @Apache::structuretags::whilebody, $bodytext);
1.161     albertel 2474: 	push( @Apache::structuretags::whileline, $token->[5]);
                   2475: 	&Apache::lonxml::debug("s code $code got -$result-");
1.160     albertel 2476: 	if ( $result ) {
                   2477: 	    &Apache::lonxml::newparser($parser,\$bodytext);
                   2478: 	}
                   2479:     } elsif ($target eq 'edit') {
                   2480: 	$result .=&Apache::edit::tag_start($target,$token);
1.211     albertel 2481: 	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160     albertel 2482: 					  $token,40);
                   2483: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2484:     } elsif ($target eq 'modified') {
                   2485: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2486: 						     $safeeval,'condition');
                   2487: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159     albertel 2488:     }
1.160     albertel 2489:     return $result;
1.4       tsai     2490: }
                   2491: 
                   2492: sub end_while {
1.159     albertel 2493:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160     albertel 2494:     my $result;
                   2495: 
1.339     albertel 2496:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2497: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160     albertel 2498: 	my $code = pop(@Apache::structuretags::whileconds);
                   2499: 	my $bodytext = pop(@Apache::structuretags::whilebody);
1.161     albertel 2500: 	my $line = pop(@Apache::structuretags::whileline);
                   2501: 	my $return = &Apache::run::run($code,$safeeval);
                   2502: 	my $starttime=time;
                   2503: 	my $error=0;
                   2504: 	while ($return) {
                   2505: 	    if (time-$starttime >
                   2506: 		$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378     albertel 2507: 		$return = 0; $error=1; next;
1.161     albertel 2508: 	    }
                   2509: 	    $result.=&Apache::scripttag::xmlparse($bodytext);
1.380     albertel 2510: 	    if ($target eq 'grade' || $target eq 'answer' ||
                   2511: 		$target eq 'analyze') {
                   2512: 		# grade/answer/analyze should produce no output but if we
                   2513: 		# are redirecting, the redirecter should know what to do
                   2514: 		# with the output
                   2515: 		if (!$Apache::lonxml::redirection) { undef($result); }
                   2516: 	    }
1.161     albertel 2517: 	    $return = &Apache::run::run($code,$safeeval);
                   2518: 	}
1.512.2.5  raeburn  2519:         if ($error) {
                   2520:             &Apache::lonxml::error(
                   2521:                 '<pre>'
                   2522:                .&mt('Code ran too long. It ran for more than [_1] seconds.',
                   2523:                         $Apache::lonnet::perlvar{'lonScriptTimeout'})
                   2524:                .&mt('This occurred while running &lt;while&gt; on line [_1].',
                   2525:                         $line)
                   2526:                .'</pre>');
                   2527:         }
1.160     albertel 2528:     } elsif ($target eq "edit") {
                   2529: 	$result.= &Apache::edit::tag_end($target,$token,'');
1.159     albertel 2530:     }
1.160     albertel 2531:     return $result;
1.1       albertel 2532: }
1.6       tsai     2533: 
1.160     albertel 2534: # <randomlist show="1">
1.6       tsai     2535: #  <tag1>..</tag1>
                   2536: #  <tag2>..</tag2>
                   2537: #  <tag3>..</tag3>
1.160     albertel 2538: #  ...
1.6       tsai     2539: # </randomlist>
                   2540: sub start_randomlist {
1.326     albertel 2541:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2542:     my $result;
1.339     albertel 2543:     if ($target eq 'answer' || $target eq 'grade'   || $target eq 'web' ||
                   2544: 	$target eq 'tex'    || $target eq 'analyze' || $target eq 'webgrade') {
1.331     albertel 2545: 	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305     albertel 2546: 	my $b_parser= HTML::LCParser->new(\$body);
                   2547: 	$b_parser->xml_mode(1);
                   2548: 	$b_parser->marked_sections(1);
1.159     albertel 2549: 	my $b_tok;
                   2550: 	my @randomlist;
                   2551: 	my $list_item;
                   2552: 	while($b_tok = $b_parser->get_token() ) {
                   2553: 	    if($b_tok->[0] eq 'S') { # start tag
                   2554: 		# get content of the tag until matching end tag
                   2555: 		# get all text upto the matching tag
                   2556: 		# and push the content into @randomlist
                   2557: 		$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
                   2558: 							   $b_parser);
                   2559: 		$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
                   2560: 		push(@randomlist,$list_item);
                   2561: 		#  print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
                   2562:                 #         $list_item</b>";
                   2563: 	    }
                   2564: 	    if($b_tok->[0] eq 'T') { # text
                   2565: 		# what to do with text in between tags?
                   2566: 		#  print "<b>TEXT $b_tok->[1]</b><br />";
                   2567: 	    }
                   2568: 	    # if($b_tok->[0] eq 'E') { # end tag, should not happen
                   2569: 	    #  print "<b>END-TAG $b_tok->[1]</b><br />";
                   2570: 	    # }
                   2571: 	}
1.303     albertel 2572: 	if (@randomlist) {
                   2573: 	    my @idx_arr = (0 .. $#randomlist);
1.512.2.14  raeburn  2574:             if ($env{'form.code_for_randomlist'}) {
                   2575:                 &Apache::structuretags::shuffle(\@idx_arr,$target);
                   2576:                 undef($env{'form.code_for_randomlist'});
                   2577:             } else {
                   2578:                 &Apache::structuretags::shuffle(\@idx_arr);
                   2579:             }
1.303     albertel 2580: 	    my $bodytext = '';
                   2581: 	    my $show=$#randomlist;
                   2582: 	    my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
                   2583: 	    $showarg--;
                   2584: 	    if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439     raeburn  2585:             if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
                   2586:                 my @currlist;
                   2587:                 my $part = $Apache::inputtags::part;
                   2588:                 if ($part ne '') {
                   2589:                     if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
                   2590:                         my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
                   2591:                         if (!(grep(/^\Q$part\E$/,@currlist))) {
                   2592:                             push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
                   2593:                         }
                   2594:                     } else {
                   2595:                         push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
                   2596:                     }
                   2597:                 }
                   2598:             }
1.512.2.9  raeburn  2599: 	    for my $i (0 .. $show) {
                   2600: 		$bodytext .= "$randomlist[ $idx_arr[$i] ]";
1.303     albertel 2601: 	    }
                   2602: 	    &Apache::lonxml::newparser($parser,\$bodytext);
1.159     albertel 2603: 	}
                   2604:     } elsif ($target eq 'edit' ) {
                   2605: 	$result .=&Apache::edit::tag_start($target,$token);
                   2606: 	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
                   2607: 					   $token,5);
                   2608: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2609:     } elsif ($target eq 'modified' ) {
                   2610: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2611: 						     $safeeval,'show');
                   2612: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   2613:     }
                   2614:     return $result;
1.7       tsai     2615: }
                   2616: 
                   2617: sub shuffle {
1.512.2.14  raeburn  2618:     my ($a,$target) = @_;
1.7       tsai     2619:     my $i;
1.303     albertel 2620:     if (ref($a) eq 'ARRAY' && @$a) {
1.512.2.14  raeburn  2621: 	&Apache::response::pushrandomnumber(undef,$target);
1.159     albertel 2622: 	for($i=@$a;--$i;) {
                   2623: 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
                   2624: 	    next if $i == $j;
                   2625: 	    @$a[$i,$j] = @$a[$j,$i];
                   2626: 	}
1.251     albertel 2627: 	&Apache::response::poprandomnumber();
1.7       tsai     2628:     }
1.6       tsai     2629: }
                   2630: 
                   2631: sub end_randomlist {
1.159     albertel 2632:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2633:     my $result;
                   2634:     if ($target eq 'edit' ) {
                   2635: 	$result=&Apache::edit::tag_end($target,$token,
                   2636: 				       'End Randomly Parsed Block');
                   2637:     }
                   2638:     return $result;
1.6       tsai     2639: }
                   2640: 
1.283     albertel 2641: sub ordered_show_check {
                   2642:     my $last_part=$Apache::inputtags::partlist[-2];
                   2643:     my $in_order=
                   2644: 	&Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
                   2645:     my $in_order_show=1;
                   2646:     if ($last_part ne '0' && lc($in_order) eq 'yes') {
                   2647: 	$in_order_show=&Apache::response::check_status($last_part);
                   2648:     }
                   2649:     return $in_order_show;
                   2650: }
                   2651: 
1.469     www      2652: 
                   2653: sub start_startpartmarker {
                   2654:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2655:     my $result='';
                   2656:     if ($target eq 'edit') {
                   2657:         $result=&Apache::edit::tag_start($target,$token);
                   2658:         $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
                   2659:         $result.=&Apache::edit::end_table();
                   2660: 
                   2661:     } 
                   2662:     return $result;
                   2663: }
                   2664: 
                   2665: sub end_startpartmarker {
                   2666:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2667:     my @result;
                   2668:     if ($target eq 'edit') { $result[1]='no'; }
                   2669:     return @result;
                   2670: }
                   2671: 
                   2672: sub start_endpartmarker {
                   2673:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2674:     my $result='';
                   2675:     if ($target eq 'edit') {
                   2676:         $result=&Apache::edit::tag_start($target,$token);
                   2677:         $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
                   2678:         $result.=&Apache::edit::end_table();
                   2679: 
                   2680:     }
                   2681:     return $result;
                   2682: }
                   2683: 
                   2684: sub end_endpartmarker {
                   2685:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2686:     my @result;
                   2687:     if ($target eq 'edit') { $result[1]='no'; }
                   2688:     return @result;
                   2689: }
                   2690: 
                   2691: 
                   2692: 
                   2693: 
                   2694: 
1.11      albertel 2695: sub start_part {
1.326     albertel 2696:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321     albertel 2697:     if (!$Apache::lonxml::metamode) {
                   2698: 	&Apache::lonxml::startredirection(); # we'll use redirection to fix up 
                   2699: 	                                     # duedates.
                   2700:     }
1.159     albertel 2701:     my $result='';
1.386     albertel 2702:     my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159     albertel 2703:     $Apache::inputtags::part=$id;
1.177     albertel 2704:     push(@Apache::inputtags::partlist,$id);
1.512.2.10  raeburn  2705:     $Apache::inputtags::leniency='';
1.177     albertel 2706:     @Apache::inputtags::response=();
1.159     albertel 2707:     @Apache::inputtags::previous=();
                   2708:     @Apache::inputtags::previous_version=();
1.405     albertel 2709:     &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403     albertel 2710:     &Apache::response::reset_params();
                   2711: 
1.159     albertel 2712:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259     albertel 2713:     my $newtype=&Apache::lonnet::EXT("resource.$id.type");
                   2714:     if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.512.2.9  raeburn  2715:     if ($Apache::lonhomework::type eq 'randomizetry') {
                   2716:         my $rndseed=&setup_rndseed($safeeval,$target);
                   2717:         if (($target eq 'grade') && &Apache::response::submitted()) {
                   2718:             $Apache::lonhomework::results{"resource.$id.rndseed"}=$rndseed;
                   2719:         }
                   2720:     } elsif (($target eq 'grade') && &Apache::response::submitted()) {
                   2721:         $Apache::lonhomework::results{"resource.$id.rndseed"}=$Apache::lonhomework::rawrndseed;
                   2722:     }
1.283     albertel 2723:     my $in_order_show=&ordered_show_check();
1.214     albertel 2724:     my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259     albertel 2725:     $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209     albertel 2726:     &Apache::run::run($expression,$safeeval);
1.159     albertel 2727: 
                   2728:     if ($target eq 'meta') {
1.224     www      2729: 	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
                   2730: 	return &Apache::response::mandatory_part_meta.
                   2731: 	       &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159     albertel 2732:     } elsif ($target eq 'web' || $target eq 'grade' ||
                   2733: 	     $target eq 'answer' || $target eq 'tex') {
1.283     albertel 2734: 	if ($hidden || !$in_order_show) {
1.326     albertel 2735: 	    my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159     albertel 2736: 	} else {
                   2737: 	    my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
                   2738: 	    push (@Apache::inputtags::status,$status);
                   2739: 	    my $expression='$external::datestatus="'.$status.'";';
                   2740: 	    $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
                   2741: 	    &Apache::run::run($expression,$safeeval);
1.284     albertel 2742: 	    if ($env{'request.state'} eq 'construct') {
1.241     albertel 2743: 		&set_problem_state($Apache::inputtags::part); 
1.240     albertel 2744: 	    }
1.216     albertel 2745: 	    if (( $status eq 'CLOSED' ) ||
                   2746: 		( $status eq 'UNCHECKEDOUT') ||
1.252     albertel 2747: 		( $status eq 'NOT_YET_VIEWED') ||
1.216     albertel 2748: 		( $status eq 'BANNED') ||
                   2749: 		( $status eq 'UNAVAILABLE') ||
                   2750: 		( $status eq 'INVALID_ACCESS')) {
1.326     albertel 2751: 		my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
                   2752: 							   $style);
1.159     albertel 2753: 		if ( $target eq "web" ) {
1.211     albertel 2754: 		    $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159     albertel 2755: 		} elsif ( $target eq 'tex' ) {
1.284     albertel 2756: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.211     albertel 2757: 			$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195     sakharuk 2758: 		    } else {
1.211     albertel 2759: 			$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195     sakharuk 2760: 		    }
1.159     albertel 2761: 		}
                   2762: 	    } else {
                   2763: 		if ($target eq 'tex') {
1.284     albertel 2764: 		    if (not $env{'form.problem_split'}=~/yes/) {
1.264     sakharuk 2765: 			if ($$tagstack[-2] eq 'td') {
1.388     foxr     2766: 			    $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264     sakharuk 2767: 			} else {
                   2768: 			    $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
                   2769: 			}
1.195     sakharuk 2770: 		    }
1.159     albertel 2771: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284     albertel 2772: 		    my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9  raeburn  2773: 		    my @allkeys = split(/,/,$allkeys);
1.222     sakharuk 2774: 		    my $allow_print_points = 0;
                   2775: 		    foreach my $partial_key (@allkeys) {
1.230     albertel 2776: 			if ($partial_key=~m/^part_(.*)$/) {
1.222     sakharuk 2777: 			    if ($1 ne '0') {$allow_print_points=1;}
                   2778: 			}
                   2779: 		    }
1.275     albertel 2780: 		    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                   2781: 		    if (defined($maxtries) && $maxtries < 0) {
                   2782: 			$allow_print_points=0;
                   2783: 		    }
1.302     albertel 2784: 		    if (lc($env{'course.'.$env{'request.course.id'}.
                   2785: 				    '.disableexampointprint'}) eq 'yes') {
                   2786: 			$allow_print_points=0;
                   2787: 		    }
1.463     foxr     2788: 		    if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { 
1.492     christia 2789: 			$result .= '\vskip 10mm\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463     foxr     2790: 
                   2791: 		    }
1.233     www      2792: 		} elsif ($target eq 'web') {
1.479     raeburn  2793:                     if ($status eq 'CAN_ANSWER') {
                   2794:                         my $problemstatus = &get_problem_status($Apache::inputtags::part); 
                   2795:                         my $num = scalar(@Apache::inputtags::partlist)-1;
1.512.2.21  raeburn  2796:                         if ((($Apache::lonhomework::default_type eq 'randomizetry') ||
                   2797:                              ($Apache::lonhomework::randomizetrypart)) &&
                   2798:                             ($Apache::lonhomework::type ne 'randomizetry')) {
                   2799:                             $result .= &randomizetry_part_header($problemstatus,'none',$num);
                   2800:                         } elsif ($Apache::lonhomework::type eq 'randomizetry') {
                   2801:                             $Apache::lonhomework::randomizetrypart = 1;
                   2802:                             my $reqtries = &Apache::lonnet::EXT("resource.$id.randomizeontries");
1.479     raeburn  2803:                             $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
                   2804:                         }
                   2805:                     }
1.475     raeburn  2806: 		    $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159     albertel 2807: 		}
                   2808: 	    }
                   2809: 	}
                   2810:     } elsif ($target eq 'edit') {
                   2811: 	$result.=&Apache::edit::tag_start($target,$token);
                   2812: 	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
                   2813: 	    &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224     www      2814: 	    '&nbsp;&nbsp;'.
                   2815: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159     albertel 2816: 		&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2817:     } elsif ($target eq 'modified') {
                   2818: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225     albertel 2819: 						     $safeeval,'id','display');
1.159     albertel 2820: 	if ($constructtag) {
1.225     albertel 2821: 	    #limiting ids to only letters numbers, and space
1.224     www      2822: 	    $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159     albertel 2823: 	    $result = &Apache::edit::rebuild_tag($token);
                   2824: 	}
                   2825:     }
                   2826:     return $result;
1.11      albertel 2827: }
                   2828: 
                   2829: sub end_part {
1.159     albertel 2830:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2831:     &Apache::lonxml::debug("in end_part $target ");
                   2832:     my $status=$Apache::inputtags::status['-1'];
                   2833:     my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283     albertel 2834:     my $in_order_show=&ordered_show_check();
1.321     albertel 2835:     my $result;
                   2836:     if (!$Apache::lonxml::metamode) {
                   2837: 	$result = &Apache::lonxml::endredirection(); # started in &start_part
1.329     albertel 2838: 	$Apache::lonxml::post_evaluate=0;
1.321     albertel 2839:     }
1.312     albertel 2840:     if ($target eq 'grade') {
1.249     albertel 2841: 	if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283     albertel 2842: 	    !$hidden && $in_order_show) {
1.311     foxr     2843: 	    $result.=&Apache::inputtags::grade;
1.249     albertel 2844: 	} else {
                   2845: 	    # move any submission data to .hidden
                   2846: 	    &Apache::inputtags::hidealldata($Apache::inputtags::part);
                   2847: 	}
1.283     albertel 2848:     } elsif (($target eq 'web' || $target eq 'tex') &&
                   2849: 	     !$hidden && $in_order_show) {
1.159     albertel 2850: 	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
                   2851: 							$target);
1.490     raeburn  2852: 	if (($Apache::lonhomework::type eq 'exam' && $target eq 'tex') ||
                   2853:              ($env{'form.grade_imsexport'})) {
1.212     albertel 2854: 	    $gradestatus='';
                   2855: 	}
1.311     foxr     2856: 	$result.=$gradestatus;
1.265     sakharuk 2857: 	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';} 
1.181     albertel 2858:     } elsif ($target eq 'edit') {
1.311     foxr     2859: 	$result.=&Apache::edit::end_table();
1.322     albertel 2860:     } elsif ($target eq 'modified') {
                   2861: 	 $result .= $token->[2];
1.159     albertel 2862:     }
                   2863:     pop @Apache::inputtags::status;
                   2864:     $Apache::inputtags::part='';
1.512.2.10  raeburn  2865:     $Apache::inputtags::leniency='';
1.295     albertel 2866:     $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159     albertel 2867:     return $result;
1.11      albertel 2868: }
1.1       albertel 2869: 
1.25      albertel 2870: sub start_preduedate {
1.326     albertel 2871:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339     albertel 2872:     if ($target eq 'web' || $target eq 'grade'    || $target eq 'answer' ||
                   2873: 	$target eq 'tex' || $target eq 'webgrade') {
1.236     albertel 2874: 	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300     albertel 2875: 	if (!$Apache::lonhomework::scantronmode &&
                   2876: 	    $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236     albertel 2877: 	    $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
                   2878: 	    &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326     albertel 2879: 	    &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159     albertel 2880: 	}
1.24      albertel 2881:     }
1.159     albertel 2882:     return '';
1.24      albertel 2883: }
                   2884: 
1.25      albertel 2885: sub end_preduedate {
1.159     albertel 2886:     return '';
1.24      albertel 2887: }
                   2888: 
1.369     foxr     2889: # In all the modes where <postanswerdate> text is 
                   2890: # displayable,  all we do is eat up the text between the start/stop
                   2891: # tags if the conditions are not right to display it.
1.25      albertel 2892: sub start_postanswerdate {
1.326     albertel 2893:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370     foxr     2894:     my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
                   2895: 	&Apache::lonnet::allowed('pav',
                   2896: 			   $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369     foxr     2897:     if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370     foxr     2898: 	$target eq 'tex' ) {
1.300     albertel 2899: 	if ($Apache::lonhomework::scantronmode ||
1.370     foxr     2900: 	    $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
                   2901: 	    (($target eq 'tex') && !$pav)) {
1.326     albertel 2902: 	    &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159     albertel 2903: 	}
                   2904:     }
                   2905:     return '';
1.24      albertel 2906: }
                   2907: 
1.25      albertel 2908: sub end_postanswerdate {
1.159     albertel 2909:     return '';
1.24      albertel 2910: }
                   2911: 
1.25      albertel 2912: sub start_notsolved {
1.326     albertel 2913:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2914:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339     albertel 2915: 	$target eq 'tex' || $target eq 'webgrade') {
1.159     albertel 2916: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
                   2917: 	&Apache::lonxml::debug("not solved has :$gradestatus:");
1.239     albertel 2918: 	if ($gradestatus =~ /^correct/ &&
                   2919: 	    &Apache::response::show_answer()) {
1.159     albertel 2920: 	    &Apache::lonxml::debug("skipping");
1.326     albertel 2921: 	    &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159     albertel 2922: 	}
1.24      albertel 2923:     }
1.159     albertel 2924:     return '';
1.24      albertel 2925: }
                   2926: 
1.25      albertel 2927: sub end_notsolved {
1.159     albertel 2928:     return '';
1.24      albertel 2929: }
                   2930: 
                   2931: sub start_solved {
1.326     albertel 2932:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 2933:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                   2934: 	$target eq 'tex') {
                   2935: 	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239     albertel 2936: 	if ($gradestatus !~ /^correct/ ||
                   2937: 	    !&Apache::response::show_answer()) {
1.326     albertel 2938: 	    &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159     albertel 2939: 	}
1.24      albertel 2940:     }
1.159     albertel 2941:     return '';
1.24      albertel 2942: }
                   2943: 
                   2944: sub end_solved {
1.248     albertel 2945:     return '';
                   2946: }
                   2947: 
                   2948: sub start_problemtype {
1.326     albertel 2949:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248     albertel 2950:     my $result;
1.339     albertel 2951:     if ($target eq 'web' || $target eq 'grade'   || $target eq 'answer' ||
                   2952: 	$target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248     albertel 2953: 	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
                   2954: 	if (!defined($mode)) { $mode='show'; }
                   2955: 	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
                   2956: 	my $found=0;
                   2957: 	foreach my $type (split(',',$for)) {
                   2958: 	    if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
                   2959: 	}
                   2960: 	if ($mode eq 'show' && !$found) {
1.326     albertel 2961: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 2962: 	}
                   2963: 	if ($mode eq 'hide' && $found) {
1.326     albertel 2964: 	    &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248     albertel 2965: 	}
                   2966:     } elsif ($target eq 'edit') {
                   2967: 	$result .=&Apache::edit::tag_start($target,$token);
                   2968: 	$result.=&Apache::edit::select_arg('Mode:','mode',
                   2969: 					   [['show','Show'],
                   2970: 					    ['hide','Hide']]
                   2971: 					   ,$token);
                   2972: 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
1.512.2.2  raeburn  2973: 					     [ ['exam','Exam/Quiz Problem'],
1.248     albertel 2974: 					       ['survey','Survey'],
1.465     raeburn  2975:                                                ['surveycred','Survey (with credit)'],
                   2976:                                                ['anonsurvey','Anonymous Survey'],
                   2977:                                                ['anonsurveycred','Anonymous Survey (with credit)'],
1.428     raeburn  2978: 					       ['problem','Homework Problem'],
1.479     raeburn  2979:                                                ['practice','Practice Problem'],
                   2980:                                                ['randomizetry','New Randomization Each Try'] ]
1.248     albertel 2981: 					     ,$token);
                   2982: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                   2983:     } elsif ($target eq 'modified') {
                   2984: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                   2985: 						     $safeeval,'mode','for');
                   2986: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                   2987:     }
                   2988:     return $result;
                   2989: }
                   2990: 
                   2991: sub end_problemtype {
1.159     albertel 2992:     return '';
1.24      albertel 2993: }
1.34      albertel 2994: 
                   2995: sub start_startouttext {
1.159     albertel 2996:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   2997:     my @result=(''.'');
                   2998:     if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404     albertel 2999:     
                   3000:     my $nesting = 
                   3001: 	&Apache::lonxml::set_state('outtext',
                   3002: 				   &Apache::lonxml::get_state('outtext')+1);
                   3003:     if ($nesting > 1 && $env{'request.state'} eq 'construct') {
                   3004: 	&Apache::lonxml::error("Nesting of &lt;startouttext /&gt; not allowed, on line ".$token->[5]);
                   3005:     }
1.159     albertel 3006:     return (@result);
1.34      albertel 3007: }
1.159     albertel 3008: 
1.34      albertel 3009: sub end_startouttext {
1.326     albertel 3010:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159     albertel 3011:     my $result='';
                   3012:     my $text='';
                   3013:     if ($target eq 'edit') {
1.424     foxr     3014: 	my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326     albertel 3015: 	$text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.512.2.11  raeburn  3016:         $result.=&Apache::edit::start_table($token)."<tr><td>".&Apache::loncommon::insert_folding_button()
                   3017:                  ." ".&mt('Text Block')."</td>"
1.438     bisitz   3018:                  .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437     raeburn  3019:                  .&Apache::edit::deletelist($target,$token)
1.474     raeburn  3020:                  .'</span></td>'
1.512.2.12  raeburn  3021: 	         .'<td><span id="math_'.$areaid.'">';
                   3022: 	if ($env{'environment.nocodemirror'}) {
                   3023: 	    $result.=&Apache::lonhtmlcommon::dragmath_button($areaid,1);
                   3024: 	} else {
                   3025: 	    $result.='&nbsp;';
                   3026: 	}
                   3027: 	$result.='</span></td>'
1.474     raeburn  3028: 		 .'<td>'
                   3029: 		 .&Apache::edit::insertlist($target,$token)
                   3030: 		 .'</td>'
1.512.2.5  raeburn  3031: 	         .'<td class="LC_edit_problem_latexhelper">' .
1.474     raeburn  3032: 	         &Apache::loncommon::helpLatexCheatsheet().
1.159     albertel 3033: 		 &Apache::edit::end_row().
1.362     albertel 3034:                  &Apache::edit::start_spanning_row()."\n".
1.255     www      3035: 		 &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159     albertel 3036:     }
                   3037:     if ($target eq 'modified') {
1.219     albertel 3038: 	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159     albertel 3039:     }
                   3040:     if ($target eq 'tex') {
                   3041: 	$result .= '\noindent ';
                   3042:     }
                   3043:     return $result;
1.34      albertel 3044: }
1.159     albertel 3045: 
1.34      albertel 3046: sub start_endouttext {
1.159     albertel 3047:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   3048:     my $result='';
                   3049:     if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
                   3050:     if ($target eq "modified") {
                   3051: 	$result='<endouttext />'.
1.377     albertel 3052: 	    &Apache::edit::handle_insertafter('startouttext');
                   3053:     }
1.404     albertel 3054: 
                   3055:     my $nesting = 
                   3056: 	&Apache::lonxml::set_state('outtext',
                   3057: 				   &Apache::lonxml::get_state('outtext')-1);
                   3058:     if ($nesting < 0 && $env{'request.state'} eq 'construct') {
                   3059: 	&Apache::lonxml::error(" Extraneous &lt;endouttext /&gt; not allowed on line ".$token->[5]);
                   3060: 	&Apache::lonxml::set_state('outtext', 0);
                   3061:     }
1.159     albertel 3062:     return $result;
1.34      albertel 3063: }
1.159     albertel 3064: 
1.34      albertel 3065: sub end_endouttext {
1.159     albertel 3066:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   3067:     my @result=('','');
                   3068:     if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
                   3069:     return (@result);
1.34      albertel 3070: }
1.159     albertel 3071: 
1.45      albertel 3072: sub delete_startouttext {
1.326     albertel 3073:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                   3074:     #  my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159     albertel 3075:     my $text=$$parser['-1']->get_text("/endouttext");
                   3076:     my $ntoken=$$parser['-1']->get_token();
                   3077:     &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
                   3078:     &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
                   3079:     # Deleting 2 parallel tag pairs, but we need the numbers later to look like
                   3080:     # they did the last time round
                   3081:     &Apache::lonxml::increasedepth($ntoken);
                   3082:     &Apache::lonxml::decreasedepth($ntoken);
                   3083:     return 1;
1.193     www      3084: }
                   3085: 
                   3086: sub start_simpleeditbutton {
                   3087:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                   3088:     my $result='';
1.284     albertel 3089:     if (($env{'form.simple_edit_button'} ne 'off') &&
1.273     albertel 3090: 	($target eq 'web') &&
1.330     albertel 3091:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284     albertel 3092:         my $url=$env{'request.noversionuri'};
1.193     www      3093:         $url=~s/\?.*$//;
1.367     albertel 3094: 	my ($symb) = &Apache::lonnet::whichuser();
1.451     bisitz   3095: #       Warning makes more sense and is more important on edit screen
1.442     bisitz   3096: #       $result='<p class="LC_warning">'
                   3097: #              .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
                   3098: #              .&Apache::loncommon::help_open_topic('Caching')
                   3099: #              .'</p>';
1.486     www      3100:         $result.=&Apache::loncommon::head_subbox(
                   3101:                  &Apache::lonhtmlcommon::start_funclist()
1.451     bisitz   3102:                 .&Apache::lonhtmlcommon::add_item_funclist(
                   3103:                      '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
                   3104:                     .&mt('Edit').'</a>')
1.486     www      3105:                 .&Apache::lonhtmlcommon::end_funclist());
1.442     bisitz   3106: 
1.193     www      3107:     }
                   3108:     return $result;
                   3109: }
                   3110: 
                   3111: sub end_simpleeditbutton {
                   3112:     return '';
1.45      albertel 3113: }
1.34      albertel 3114: 
1.428     raeburn  3115: sub practice_problem_header {
                   3116:     return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
                   3117:            '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
                   3118:            '</span>';
                   3119: }
                   3120: 
1.479     raeburn  3121: sub randomizetry_problem_header {
1.512.2.21  raeburn  3122:     my ($problemstatus,$reqtries,$symb) = @_;
1.479     raeburn  3123:     my ($header,$text);
                   3124:     if ($reqtries > 1) {
                   3125:         $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
                   3126:         if (($problemstatus eq 'no') ||
                   3127:             ($problemstatus eq 'no_feedback_ever')) {
                   3128:             $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
                   3129:         } else {
                   3130:             $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
                   3131:         }
                   3132:     } else {
                   3133:         $header = &mt('New Problem Variation Each Try');
                   3134:         if (($problemstatus eq 'no') ||
                   3135:             ($problemstatus eq 'no_feedback_ever')) {
                   3136:             $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
                   3137: 
                   3138:         } else {
                   3139:             $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
                   3140:         }
                   3141:     }
1.512.2.21  raeburn  3142:     if (($env{'request.state'} eq "construct") || ($symb eq '')) {
                   3143:         return '<div class="LC_info" id="LC_randomizetry_header" style="display:none">'.
                   3144:                '<h3>'.$header.'</h3><span class="LC_info">'.$text.'</span><hr /></div>';
                   3145:     } else {
                   3146:         return '<h3 class="LC_info">'.$header.'</h3>'.
                   3147:                '<span class="LC_info">'.$text.'</span><hr />';
                   3148:     }
1.479     raeburn  3149: }
                   3150: 
                   3151: sub randomizetry_part_header {
                   3152:     my ($problemstatus,$reqtries,$num) = @_;
                   3153:     my ($header,$text);
                   3154:     if ($reqtries eq 'none') {
                   3155:         $header = &mt('No Question Variation');
                   3156:         $text = &mt('For this question there will no new variation after a try.');
                   3157:     } elsif ($reqtries > 1) {
                   3158:         $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
                   3159:         if (($problemstatus eq 'no') ||
                   3160:             ($problemstatus eq 'no_feedback_ever')) {
                   3161:             $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
                   3162:         } else {
                   3163:             $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
                   3164:         }
                   3165:     } else {
                   3166:         $header = &mt('New Question Variation For Each Try');
                   3167:         if (($problemstatus eq 'no') ||
                   3168:             ($problemstatus eq 'no_feedback_ever')) {
                   3169:             $text =  &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
                   3170:         } else {
                   3171:             $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
                   3172:         }
                   3173:     }
                   3174:     my $output;
                   3175:     if ($num > 1) {
                   3176:         $output .= '<hr />';
                   3177:     }
                   3178:     $output .=  '<span class="LC_info"><h4>'.$header.'</h4></span>'.
                   3179:                   '<span class="LC_info">'.$text.'</span><br /><br />';
                   3180:     return $output;
                   3181: }
                   3182: 
1.1       albertel 3183: 1;
                   3184: __END__
1.435     jms      3185: 
                   3186: =pod
                   3187: 
                   3188: =back
                   3189: 
                   3190: =cut

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