Annotation of loncom/homework/structuretags.pm, revision 1.512.2.24.2.7
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.512.2.24.2. (raeburn 4:): # $Id: structuretags.pm,v 1.512.2.24.2.6 2023/09/11 12:08:18 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();
1.512.2.24.2. (raeburn 65:): use Apache::lonnavmaps;
1.267 albertel 66: use Time::HiRes qw( gettimeofday tv_interval );
1.512.2.24 raeburn 67: use HTML::Entities();
1.356 www 68: use lib '/home/httpd/lib/perl/';
69: use LONCAPA;
70:
1.78 harris41 71: BEGIN {
1.469 www 72: &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 73: }
74:
1.500 foxr 75:
76: #---------------------------------------------------------------------------------
77: #
78: # This section of code deals with hyphenation management.
79: # We must do three things:
80: # - keep track fo the desired languages to alter the header.
81: # - provide hyphenation selection as needed by each language that appears in the
82: # text.
83: # - Provide the header text needed to make available the desired hyphenations.
84: #
85: #
86:
87: # Hash whose keys are the languages encountered in the document/resource.
88: #
89:
90: my %languages_required;
91: ##
92: # Given a language selection as input returns a chunk of LaTeX that
93: # selects the required hyphenator.
94: #
95: # @param language - the language being selected.
96: # @return string
97: # @retval The LaTeX needed to select the hyphenation appropriate to the language.
98: #
99: sub select_hyphenation {
100: my $language = shift;
101:
102: $language = &Apache::loncommon::latexlanguage($language); # Translate -> latex language.
103:
104: # If there is no latex language there's not much we can do:
105:
106: if ($language) {
107: &require_language($language);
108: my $babel_hyphenation = "\\selectlanguage{$language}";
109:
110: return $babel_hyphenation;
111: } else {
112: return '';
113: }
114: }
115: ##
116: # Selects hyphenation based on the current problem metadata.
117: # This requires that
118: # - There is a language metadata item set for the problem.
119: # - The language has a latex/babel hyphenation.
120: #
121: # @note: Uses &Apache::lonxml::request to locate the Uri associated with
122: # this problem.
123: # @return string (possibly empty).
124: # @retval If not empty an appropriate \selectlanguage{} directive.
125: #
126: sub select_metadata_hyphenation {
127: my $uri = $Apache::lonxml::request->uri;
128: my $language = &Apache::lonnet::metadata($uri, 'language');
129: my $latex_language = &Apache::loncommon::latexhyphenation($language);
130: if ($latex_language) {
131: return '\selectlanguage{'.$latex_language."}\n";
132: }
133: return ''; # no latex hyphenation or no lang metadata.
134: }
135:
136:
137: ##
138: # Clears the set of languages required by the document being rendered.
139: #
140: sub clear_required_languages {
141: %languages_required = ();
142: }
143: ##
144: # Allows an external client of this module to register a need for a language:
145: #
146: # @param LaTeX language required:
147: #
148: sub require_language {
149: my $language = shift;
150: $languages_required{$language} = 1;
151: }
152:
153: ##
154: # Provides the header for babel that indicates the languages
155: # the document requires.
156: # @return string
157: # @retval \usepackage[lang1,lang2...]{babel}
158: # @retval '' if there are no languages_required.
159: sub languages_header {
160: my $header ='';
161: my @languages = (keys(%languages_required));
162:
163: # Only generate the header if there are languages:
164:
165: if (scalar @languages) {
166: my $language_list = join(',', (@languages));
167: $header = '\usepackage['.$language_list."]{babel}\n";
168: }
169: return $header;
170: }
171:
172: #----------------------------------------------------------------------------------
173:
1.10 albertel 174: sub start_web {
1.326 albertel 175: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383 albertel 176: if ($target ne 'edit' && $target ne 'modified') {
177: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
178: if ($target eq 'web' || $target eq 'webgrade') {
179: return $bodytext;
180: }
181: } elsif ($target eq "edit" ) {
182: my $bodytext =
183: &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
184: my $result = &Apache::edit::tag_start($target,$token);
185: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
186: return $result;
187: } elsif ( $target eq "modified" ) {
188: return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159 albertel 189: }
190: return '';
1.10 albertel 191: }
192:
193: sub end_web {
1.44 ng 194: return '';
1.10 albertel 195: }
196:
197: sub start_tex {
1.326 albertel 198: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198 sakharuk 199: my $result='';
1.383 albertel 200: if ($target ne 'edit' && $target ne 'modified') {
201: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
202: if ($target eq 'tex') {
1.434 foxr 203:
204: # If inside a table, occurrences of \\ must be removed;
205: # else the table blows up.
206:
207: if (&Apache::londefdef::is_inside_of($tagstack, "table")) {
208: $bodytext =~ s/\\\\//g;
209: }
1.432 foxr 210: return $bodytext.'{}';
1.383 albertel 211: }
212: } elsif ($target eq "edit" ) {
213: my $bodytext =
214: &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
215: my $result = &Apache::edit::tag_start($target,$token);
216: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
217: return $result;
218: } elsif ( $target eq "modified" ) {
219: return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159 albertel 220: }
1.198 sakharuk 221: return $result;;
1.10 albertel 222: }
223:
224: sub end_tex {
1.44 ng 225: return '';
1.9 albertel 226: }
227:
1.400 albertel 228: sub homework_js {
1.512.2.9 raeburn 229: my ($postsubmit,$timeout);
230: if (($env{'request.course.id'}) && ($env{'request.state'} ne 'construct')) {
231: my $crstype;
232: if (&Apache::loncommon::course_type() eq 'Community') {
233: $crstype = 'community';
234: } else {
235: if ($env{'course.'.$env{'request.course.id'}.'.internal.coursecode'}) {
236: $crstype = 'official';
237: } elsif ($env{'course.'.$env{'request.course.id'}.'.internal.textbook'}) {
238: $crstype = 'textbook';
239: } else {
240: $crstype = 'unofficial';
241: }
242: }
243: $postsubmit = $env{'course.'.$env{'request.course.id'}.'.internal.postsubmit'};
244: if ($postsubmit eq '') {
245: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
246: $postsubmit = $domdefs{'postsubmit'};
247: unless ($postsubmit eq 'off') {
248: $timeout = $domdefs{$crstype.'postsubtimeout'};
249: }
250: } elsif ($postsubmit eq '0') {
251: $postsubmit = 'off';
252: } elsif ($postsubmit eq '1') {
253: $postsubmit = 'on';
254: $timeout = $env{'course.'.$env{'request.course.id'}.'.internal.postsubtimeout'};
255: if ($timeout eq '') {
256: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
257: $timeout = $domdefs{$crstype.'postsubtimeout'};
258: }
259: }
260: if ($timeout eq '') {
261: $timeout = 60;
262: }
263: } else {
264: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'request.role.domain'});
265: $postsubmit = $domdefs{'postsubmit'};
266: unless ($postsubmit eq 'off') {
267: $timeout = 60;
268: }
269: }
270: my $jstimeout = 0;
271: if ($timeout) {
272: $jstimeout = 1000 * $timeout;
273: }
1.400 albertel 274: return &Apache::loncommon::resize_textarea_js().
1.512.2.11 raeburn 275: &Apache::loncommon::colorfuleditor_js().
1.512.2.24.2. (raeburn 276:): &Apache::lonxml::setmode_javascript().
1.512.2.9 raeburn 277: <<"JS";
1.400 albertel 278: <script type="text/javascript">
1.483 raeburn 279: // <![CDATA[
1.494 raeburn 280: function setSubmittedPart (part,prefix) {
281: if (typeof(prefix) == 'undefined') {
282: this.document.lonhomework.submitted.value="part_"+part;
283: } else {
284: for (var i=0;i<this.document.lonhomework.elements.length;i++) {
285: if (this.document.lonhomework.elements[i].name == prefix+'submitted') {
286: this.document.lonhomework.elements[i].value="part_"+part;
287: }
288: }
289: }
1.400 albertel 290: }
291:
1.512.2.9 raeburn 292: function disableAutoComplete (id) {
293: var field = document.getElementById(id);
294: if (field != null && field != undefined){
295: if ('autocomplete' in field) {
296: field.autocomplete = "off";
297: } else {
298: field.setAttribute("autocomplete", "off");
299: }
300: }
301: }
302:
1.400 albertel 303: function image_response_click (which, e) {
304: init_geometry();
305: if (!e) { e = window.event; } //IE
306: var input_element = document.lonhomework.elements[which];
1.401 albertel 307: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 308: var token = token_element.value;
1.401 albertel 309: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 310: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
311: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
312: var click = x+':'+y;
313: input_element.value = click;
1.485 raeburn 314: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
1.400 albertel 315: }
1.512.2.9 raeburn 316:
317: var submithandled = 0;
318: var keypresshandled = 0;
319: var postsubmit = '$postsubmit';
320:
321: \$(document).ready(function(){
322: if (postsubmit != 'off') {
323: \$(document).keypress(function(event){
324: var keycode = (event.keyCode ? event.keyCode : event.which);
325: if ((keycode == '13') && (keypresshandled == 0)) {
326: if ( \$( document.activeElement ).hasClass("LC_textline") ) {
327: keypresshandled = 1;
328: var idsArray = \$( document.activeElement ).attr("id").split(/HWVAL_/);
329: if (idsArray.length) {
330: event.preventDefault();
331: var itemsArray = idsArray[1].split(/_/);
332: var buttonId = idsArray[0]+'submit_'+itemsArray[0];
333: \$("#"+buttonId).trigger("click");
334: }
335: }
336: }
337: });
338:
339: \$(document).delegate('form :submit', 'click', function( event ) {
340: if ( \$( this ).hasClass( "LC_hwk_submit" ) ) {
341: var buttonId = this.id;
342: var timeout = $jstimeout;
343: if (submithandled == 0) {
344: submithandled = 1;
345: \$( "#msg_"+buttonId ).css({"display": "inline","background-color": "#87cefa",
346: "color": "black","padding": "2px"}) ;
1.512.2.18 raeburn 347: if (( \$(this.form).attr("id") == "LC_page" ) && (\$('input[name="all_submit"]').length )) {
1.512.2.9 raeburn 348: if (buttonId != "all_submit") {
349: \$( ".LC_status_"+buttonId ).hide();
1.512.2.18 raeburn 350: }
351: if (( "#"+buttonId+"_pressed" ).length) {
352: \$( "#"+buttonId+"_pressed" ).val( "1" );
1.512.2.9 raeburn 353: }
354: } else {
355: \$( ".LC_status_"+buttonId ).hide();
356: }
357: \$(this.form).submit();
358: \$( ".LC_hwk_submit" ).prop( "disabled", true);
359: \$( ".LC_textline" ).prop( "readonly", "readonly");
360: event.preventDefault();
361:
362: if (timeout > 0) {
363: setTimeout(function(){
364: \$( "#msg_"+buttonId ).css({"display": "none"});
1.512.2.18 raeburn 365: if (( \$(this.form).attr("id") == "LC_page" ) && (\$('input[name="all_submit"]').length )) {
366: if (( "#"+buttonId+"_pressed" ).length) {
367: \$( "#"+buttonId+"_pressed" ).val( "" );
1.512.2.9 raeburn 368: }
369: }
370: \$( ".LC_hwk_submit" ).prop( "disabled", false);
371: \$( ".LC_textline" ).prop( "readonly", false);
372: submithandled = 0;
373: keypresshandled = 0;
374: }, timeout);
375: }
376: return true;
377: }
378: }
379: });
380: }
381: });
382:
1.483 raeburn 383: // ]]>
1.400 albertel 384: </script>
385: JS
386: }
387:
1.48 albertel 388: sub page_start {
1.345 albertel 389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
390: $extra_head)=@_;
1.159 albertel 391: my %found;
1.207 albertel 392: foreach my $taginside (@$tagstack) {
1.159 albertel 393: foreach my $taglookedfor ('html','body','form') {
394: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
395: }
396: }
397:
1.343 albertel 398: if ($target eq 'tex') {
399: return
400: &Apache::londefdef::start_html($target,$token,$tagstack,
401: $parstack,$parser,$safeeval);
402: }
403:
1.474 raeburn 404: $extra_head .= &homework_js().
405: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
406: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.512.2.12 raeburn 407: my %textarea_args;
408: if (($env{'request.state'} ne 'construct') ||
409: ($env{'environment.nocodemirror'})) {
410: %textarea_args = (
1.474 raeburn 411: dragmath => 'math',
412: );
1.512.2.12 raeburn 413: }
1.474 raeburn 414: $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1.425 raeburn 415: }
1.478 raeburn 416: my $is_task = ($env{'request.uri'} =~ /\.task$/);
1.512.2.9 raeburn 417: my ($needs_upload,$partlist);
1.495 raeburn 418: my ($symb)= &Apache::lonnet::whichuser();
419: my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
1.478 raeburn 420: if ($is_task) {
1.495 raeburn 421: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
1.493 raeburn 422: } else {
423: if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.uploadedfiletypes") ne '') {
1.495 raeburn 424: unless ($env{'request.state'} eq 'construct') {
425: my $navmap = Apache::lonnavmaps::navmap->new();
426: if (ref($navmap)) {
427: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 428: my $is_page;
429: if (ref($mapres)) {
430: $is_page = $mapres->is_page();
431: }
432: unless ($is_page) {
1.495 raeburn 433: $needs_upload = 1;
434: }
1.512.2.9 raeburn 435: if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
436: my $res = $navmap->getBySymb($symb);
437: if (ref($res)) {
438: $partlist = $res->parts();
439: }
440: }
1.495 raeburn 441: }
442: }
1.493 raeburn 443: } else {
444: unless ($env{'request.state'} eq 'construct') {
445: my $navmap = Apache::lonnavmaps::navmap->new();
446: if (ref($navmap)) {
1.495 raeburn 447: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 448: my $is_page;
449: if (ref($mapres)) {
450: $is_page = $mapres->is_page();
451: }
1.512.2.9 raeburn 452: if ($is_page) {
453: if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
454: my $res = $navmap->getBySymb($symb);
455: if (ref($res)) {
456: $partlist = $res->parts();
457: }
458: }
459: } else {
1.495 raeburn 460: my $res = $navmap->getBySymb($symb);
461: if (ref($res)) {
1.512.2.9 raeburn 462: $partlist = $res->parts();
1.495 raeburn 463: if (ref($partlist) eq 'ARRAY') {
464: foreach my $part (@{$partlist}) {
465: my @types = $res->responseType($part);
466: my @ids = $res->responseIds($part);
467: for (my $i=0; $i < scalar(@ids); $i++) {
468: if ($types[$i] eq 'essay') {
469: my $partid = $part.'_'.$ids[$i];
470: if (&Apache::lonnet::EXT("resource.$partid.uploadedfiletypes") ne '') {
471: $needs_upload = 1;
472: last;
473: }
1.493 raeburn 474: }
475: }
476: }
1.495 raeburn 477: }
478: }
1.493 raeburn 479: }
480: }
481: }
482: }
1.495 raeburn 483: if ($needs_upload) {
1.512.2.17 raeburn 484: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js().
485: '<script type="text/javascript" '.
486: 'src="/res/adm/includes/file_upload.js"></script>';
1.495 raeburn 487: }
1.478 raeburn 488: }
1.425 raeburn 489:
1.344 albertel 490: my %body_args;
491: if (defined($found{'html'})) {
492: $body_args{'skip_phases'}{'head'}=1;
493: } else {
1.343 albertel 494:
1.345 albertel 495: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 496:
1.379 albertel 497: $extra_head .= &Apache::londefdef::generate_css_links();
498:
1.384 albertel 499: if ($env{'request.state'} eq 'construct') {
1.343 albertel 500: $extra_head.=&Apache::edit::js_change_detection().
501: "<script type=\"text/javascript\">\n".
502: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
503: &Apache::loncommon::browser_and_searcher_javascript().
504: "\n</script>\n";
1.512.2.9 raeburn 505: if ($target eq 'edit') {
506: $extra_head .= &Apache::edit::js_update_linknum();
507: }
1.343 albertel 508: }
1.159 albertel 509: }
1.343 albertel 510:
1.446 bisitz 511: my $pageheader = '';
1.344 albertel 512: if (defined($found{'body'})) {
513: $body_args{'skip_phases'}{'body'}=1;
514: } elsif (!defined($found{'body'})
515: && $env{'request.state'} eq 'construct') {
1.343 albertel 516: if ($target eq 'web' || $target eq 'edit') {
1.512.2.3 raeburn 517: # Breadcrumbs for Authoring Space
1.450 bisitz 518: &Apache::lonhtmlcommon::clear_breadcrumbs();
519: &Apache::lonhtmlcommon::add_breadcrumb({
1.512.2.3 raeburn 520: 'text' => 'Authoring Space',
1.497 raeburn 521: 'href' => &Apache::loncommon::authorspace($env{'request.uri'}),
1.450 bisitz 522: });
1.460 droeschl 523: # breadcrumbs (and tools) will be created
524: # in start_page->bodytag->innerregister
525:
1.450 bisitz 526: # FIXME Where are we?
527: # &Apache::lonhtmlcommon::add_breadcrumb({
528: # 'text' => 'Problem Editing', # 'Problem Testing'
529: # 'href' => '',
530: # });
1.460 droeschl 531: $pageheader =&Apache::loncommon::head_subbox(
1.446 bisitz 532: &Apache::loncommon::CSTR_pageheader());
1.297 albertel 533: }
1.272 albertel 534: } elsif (!defined($found{'body'})) {
1.343 albertel 535: my %add_entries;
1.159 albertel 536: my $background=&Apache::lonxml::get_param('background',$parstack,
537: $safeeval);
1.343 albertel 538: if ($background ne '' ) {
539: $add_entries{'background'} = $background;
540: }
1.344 albertel 541:
1.290 albertel 542: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
543: $safeeval);
1.446 bisitz 544: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
1.344 albertel 545:
1.446 bisitz 546: $body_args{'bgcolor'} = $bgcolor;
547: # $body_args{'no_title'} = 1;
548: $body_args{'force_register'} = 1;
549: $body_args{'add_entries'} = \%add_entries;
1.466 droeschl 550: if ( $env{'request.state'} eq 'construct') {
1.446 bisitz 551: $body_args{'only_body'} = 1;
1.512.2.7 raeburn 552: } elsif ($target eq 'web') {
553: $body_args{'print_suppress'} = 1;
1.446 bisitz 554: }
1.344 albertel 555: }
1.365 albertel 556: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 557: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
558: \%body_args);
1.446 bisitz 559: $page_start .= $pageheader;
1.462 raeburn 560: if (!defined($found{'body'})
561: && $env{'request.state'} ne 'construct'
562: && ($target eq 'web' || $target eq 'webgrade')) {
563:
564: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
565: if ($symb eq '' && !$publicuser) {
566: $page_start .= '<p class="LC_info">'
567: .&mt('Browsing resource, all submissions are temporary.')
568: .'</p>';
1.457 bisitz 569: }
1.344 albertel 570: }
571:
1.409 albertel 572: if (!defined($found{'body'}) && $env{'request.state'} ne 'construct') {
1.343 albertel 573: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 574: }
575: my $form_tag_start;
576: if (!defined($found{'form'})) {
1.337 albertel 577: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.465 raeburn 578: my $uri = &Apache::loncommon::inhibit_menu_check(
1.455 droeschl 579: &Apache::lonenc::check_encrypt($env{'request.uri'}));
1.464 raeburn 580: $uri = &HTML::Entities::encode($uri,'<>&"');
1.327 albertel 581: $form_tag_start.=$uri.'" ';
582: if ($target eq 'edit') {
583: $form_tag_start.=&Apache::edit::form_change_detection();
584: }
1.493 raeburn 585: my ($symb,$courseid,$udom,$uname)=&Apache::lonnet::whichuser();
586: my ($path,$multiresp) =
587: &Apache::loncommon::get_turnedin_filepath($symb,$uname,$udom);
1.512.2.24.2. (raeburn 588:): if ($env{'request.user_in_effect'}) {
589:): $form_tag_start .= ' onsubmit="preventDefault();"';
590:): } elsif (($is_task) || ($needs_upload)) {
1.495 raeburn 591: $form_tag_start .= ' onsubmit="return file_submission_check(this,'."'$path','$multiresp'".');"';
1.478 raeburn 592: }
1.368 albertel 593: $form_tag_start.='>'."\n";
1.355 albertel 594:
595: if ($symb =~ /\S/) {
596: $symb=
597: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
598: $form_tag_start.=
1.368 albertel 599: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 600: }
1.159 albertel 601: }
1.512.2.9 raeburn 602: return ($page_start,$form_tag_start,$partlist);
1.105 albertel 603: }
604:
1.141 matthew 605: #use Time::HiRes();
1.105 albertel 606: sub get_resource_name {
1.159 albertel 607: my ($parstack,$safeeval)=@_;
1.388 foxr 608: my $name;
1.204 albertel 609: if (defined($Apache::lonhomework::name)) {
1.388 foxr 610: $name = $Apache::lonhomework::name;
611: } else {
612: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 613: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 614: if ($name eq '') {
615: $name=&Apache::lonnet::EXT('resource.title');
616: if ($name eq 'con_lost') { $name = ''; }
617: }
618: if ($name!~/\S+/) {
619: $name=$env{'request.uri'};
620: $name=~s-.*/([^/]+)$-$1-;
621: }
622: # The name has had html tags escaped:
623:
624: $name=~s/</</gs;
625: $name=~s/>/>/gs;
626:
627: $Apache::lonhomework::name=$name;
1.204 albertel 628: }
1.159 albertel 629: return $name;
1.105 albertel 630: }
631:
632: sub setup_rndseed {
1.512.2.9 raeburn 633: my ($safeeval,$target,$probpartlist)=@_;
1.367 albertel 634: my ($symb)=&Apache::lonnet::whichuser();
1.512.2.19 raeburn 635: my ($questiontype,$set_safespace,$rndseed,$numtries,$reqtries);
1.479 raeburn 636: if ($target eq 'analyze') {
637: $questiontype = $env{'form.grade_questiontype'};
638: }
639: unless (defined($questiontype)) {
640: $questiontype = $Apache::lonhomework::type;
641: }
1.512.2.19 raeburn 642: if ($Apache::lonhomework::type eq 'randomizetry') {
643: my $partfortries = $Apache::inputtags::part;
1.512.2.22 raeburn 644: #
645: # Where question type is "randomizetry" for a problem containing
646: # a single part (and unless type is explicitly set to not be
647: # "randomizetry" for that part), the number of tries used to
648: # determine randomization will be for that part, and randomization
649: # from calls to &random() in a perl script block before the part tag,
650: # will change based on the number of tries, and value of the
651: # "randomizeontries" parameter in effect for the single part.
652: #
1.512.2.19 raeburn 653: if (ref($probpartlist) eq 'ARRAY') {
1.512.2.22 raeburn 654: if ((@{$probpartlist} == 1) && ($probpartlist->[0] ne $partfortries)) {
655: if (&Apache::lonnet::EXT('resource.'.$probpartlist->[0].'.type') eq 'randomizetry') {
1.512.2.21 raeburn 656: $partfortries = $probpartlist->[0];
657: } else {
658: $partfortries = '';
659: }
1.512.2.19 raeburn 660: }
661: }
1.512.2.21 raeburn 662: if ($partfortries ne '') {
663: $numtries = $Apache::lonhomework::history{"resource.$partfortries.tries"};
664: $reqtries = &Apache::lonnet::EXT("resource.$partfortries.randomizeontries");
665: }
1.512.2.19 raeburn 666: }
1.512.2.24.2. (raeburn 667:): if (($env{'request.state'} eq "construct")
1.512.2.14 raeburn 668: || ($symb eq '')
669: || ($Apache::lonhomework::type eq 'practice')
1.512.2.24.2. (raeburn 670:): || ($Apache::lonhomework::history{'resource.CODE'})
1.512.2.14 raeburn 671: || (($env{'form.code_for_randomlist'}) && ($target eq 'analyze'))) {
1.316 www 672: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 673: ['rndseed']);
1.284 albertel 674: $rndseed=$env{'form.rndseed'};
1.159 albertel 675: if (!$rndseed) {
1.162 albertel 676: $rndseed=$Apache::lonhomework::history{'rndseed'};
677: if (!$rndseed) {
678: $rndseed=time;
679: }
1.512.2.14 raeburn 680: unless ($env{'form.code_for_randomlist'}) {
681: $env{'form.rndseed'}=$rndseed;
682: }
1.162 albertel 683: }
1.512.2.20 raeburn 684: if ((($env{'request.state'} eq "construct") || ($symb eq '')) &&
1.479 raeburn 685: ($Apache::lonhomework::type eq 'randomizetry')) {
1.512.2.19 raeburn 686: if ($numtries) {
687: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
688: my $inc = int($numtries/$reqtries);
689: $rndseed += $inc;
690: } else {
691: $rndseed += $numtries;
692: }
1.479 raeburn 693: }
1.480 raeburn 694: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.479 raeburn 695: }
1.374 albertel 696: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
697: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 698: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 699: srand(time);
700: $rndseed=int(rand(2100000000));
1.284 albertel 701: $env{'form.rndseed'}=$rndseed;
702: delete($env{'form.resetdata'});
703: delete($env{'form.newrandomization'});
1.159 albertel 704: }
1.488 www 705: $rndseed=~s/\,/\:/g;
706: $rndseed=~s/[^\w\d\:\-]//g;
1.489 www 707: if (defined($rndseed)) {
708: my ($c1,$c2)=split(/\:/,$rndseed);
709: unless ($c2) { $c2=0; }
710: unless (($c1==int($c1)) && ($c2==int($c2))) {
711: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
712: }
1.187 albertel 713: }
1.512.2.14 raeburn 714: if (($env{'form.code_for_randomlist'}) && ($target eq 'analyze')) {
715: $env{'form.CODE'} = $env{'form.code_for_randomlist'};
716: $rndseed=&Apache::lonnet::rndseed();
717: undef($env{'form.CODE'});
718: } elsif ($Apache::lonhomework::history{'resource.CODE'}) {
1.247 albertel 719: $rndseed=&Apache::lonnet::rndseed();
720: }
1.479 raeburn 721: $set_safespace = 1;
722: } elsif ($questiontype eq 'randomizetry') {
723: if ($target eq 'analyze') {
724: if (defined($env{'form.grade_rndseed'})) {
725: $rndseed = $env{'form.grade_rndseed'};
726: }
727: }
728: unless (($target eq 'analyze') && (defined($rndseed))) {
729: $rndseed=&Apache::lonnet::rndseed();
1.512.2.19 raeburn 730: my $curr_try = $numtries;
1.479 raeburn 731: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
732: $curr_try ++;
733: }
734: if ($rndseed =~/^(\d+)[,:](\d+)$/) {
735: $rndseed = $1;
736: }
737: if ($curr_try) {
738: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
739: my $inc = int(($curr_try-1)/$reqtries);
740: $rndseed += $inc;
741: } else {
742: $rndseed += $curr_try;
743: }
744: }
745: }
746: $set_safespace = 1;
1.512.2.9 raeburn 747: if ($target eq 'grade') {
748: $Apache::lonhomework::rawrndseed = $rndseed;
749: }
1.479 raeburn 750: }
751: if ($set_safespace) {
752: if ($safeeval) {
753: &Apache::lonxml::debug("Setting rndseed to $rndseed");
754: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
755: }
756: }
757: unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
758: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159 albertel 759: }
760: return $rndseed;
1.105 albertel 761: }
762:
1.268 albertel 763: sub remember_problem_state {
764: return '
1.284 albertel 765: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
766: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
767: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 768: }
769:
1.487 www 770: sub problem_edit_action_button {
771: my ($name,$action,$accesskey,$text,$flag)=@_;
772: my $actionscript="setmode(this.form,'$action')";
773: return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
774: ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
775: }
776:
1.423 www 777: sub problem_edit_buttons {
1.487 www 778: my ($mode)=@_;
1.512.2.11 raeburn 779: # Buttons that save
780: my $result = '<div style="float:right">';
781: if ($mode eq 'editxml') {
782: $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
783: $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
784: } else {
785: $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
786: $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
787: }
788: $result.="\n</div>\n";
1.487 www 789: # Buttons that do not save
1.512.2.11 raeburn 790: $result .= '<div>'.
1.487 www 791: &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
792: if ($mode eq 'editxml') {
793: $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
794: $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
1.512.2.11 raeburn 795: if ($env{'environment.nocodemirror'}) {
796: $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
797: }
1.487 www 798: } else {
799: $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
800: $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
801: }
802: $result.="\n</div>";
803: return $result;
1.423 www 804: }
805:
806: sub problem_edit_header {
1.512.2.11 raeburn 807: my ($mode)=@_;
808: my $return = '<input type="hidden" name="submitted" value="edit" />'.
1.487 www 809: &remember_problem_state('edit').'
1.512.2.11 raeburn 810: <div class="LC_edit_problem_header">
811: <div class="LC_edit_problem_header_title">
812: '.&mt('Problem Editing').$mode.&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
813: </div><div class="LC_edit_actionbar" id="actionbar">'.
814: '<input type="hidden" name="problemmode" value="saveedit" />'.
815: &problem_edit_buttons();
816:
817: $return .= '</div></div>' . &Apache::lonxml::message_location();
818: $return .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined.css" />
819: <script type="text/javascript" src="/adm/codemirror/codemirror-compressed-colorful.js"></script>';
820:
821: $return .= '<script type="text/javascript" src="/adm/jQuery/addons/jquery-scrolltofixed.js"></script>
822: <script type="text/javascript">
823: // unless internet explorer
824: if (!(window.navigator.appName == "Microsoft Internet Explorer" && (document.documentMode || document.compatMode))){
825: $(document).ready(
826: function() {
827: $(\'.LC_edit_actionbar\').scrollToFixed(
828: {
829: fixed: function(){
830: //$(this).find(\'.LC_edit_actionbar\').css(\'height\', \'31px\');
831: $(this).find(\'.LC_edit_actionbar\');
832: }
833: }
834: );
835: }
836: );
837: }
838: </script>
839: <table id="LC_edit_problem_colorful" border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
840: return $return;
1.105 albertel 841: }
842:
1.512.2.11 raeburn 843:
1.105 albertel 844: sub problem_edit_footer {
1.512.2.11 raeburn 845: my $resource = $env{'request.ambiguous'};
1.412 albertel 846: return '</td></tr></table><br />
847: <div class="LC_edit_problem_footer">
1.453 bisitz 848: <hr />'.
1.423 www 849: &problem_edit_buttons().'
1.459 bisitz 850: <hr style="clear:both;" />
1.512.2.11 raeburn 851: <script type="text/javascript">
852: restoreState("'.$resource.'");
853: restoreScrollPosition("'.$resource.'");
854: </script>
1.412 albertel 855: </div>
856: '.
1.342 albertel 857: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 858: }
859:
1.235 albertel 860: sub option {
861: my ($value,$name) = @_;
862: my $result ="<option value='".$value."' ";
1.284 albertel 863: if ($env{'form.'.$name} eq $value) {
1.235 albertel 864: $result.=" selected='on' ";
865: }
866: $result.='>';
867: return $result;
868: }
869:
1.105 albertel 870: sub problem_web_to_edit_header {
1.159 albertel 871: my ($rndseed)=@_;
1.406 albertel 872: my $result .= '<div class="LC_edit_problem_header">';
873:
874: if (!$Apache::lonhomework::parsing_a_task) {
875: $result .=
876: '<div class="LC_edit_problem_header_title">'.
877: &mt('Problem Testing').
878: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
879: '</div>';
880: } else {
881: $result .=
882: '<div class="LC_edit_problem_header_title">'.
883: &mt('Task Testing').
884: '</div>';
885: }
886:
1.315 albertel 887: my $show_all_foils_text =
888: ($Apache::lonhomework::parsing_a_task) ?
1.452 bisitz 889: &mt('Show All Instances')
890: : &mt('Show All Foils');
1.315 albertel 891:
1.452 bisitz 892: my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
893: .'<input type="checkbox" name="showallfoils"';
1.440 bisitz 894: if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452 bisitz 895: $show_all.= ' /> '.$show_all_foils_text
896: .'</label></span>';
1.406 albertel 897:
898:
1.384 albertel 899:
1.406 albertel 900: $result .= '<div class="LC_edit_problem_header_status_row">';
1.313 albertel 901: if (!$Apache::lonhomework::parsing_a_task) {
902: $result.="
1.406 albertel 903: <div class='LC_edit_problem_header_row1'>
904: <span class=\"LC_nobreak\">
1.405 albertel 905: ".&mt("Problem Status:")."
1.235 albertel 906: <select name='problemstate'>
1.270 albertel 907: <option value=''></option>
1.235 albertel 908: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
909: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
910: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
911: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
912: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
913: </select>
1.406 albertel 914: </span>
915: <span class=\"LC_nobreak\">
1.405 albertel 916: ".&mt("Problem Type:")."
1.235 albertel 917: <select name='problemtype'>
1.270 albertel 918: <option value=''></option>
1.512.2.1 raeburn 919: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
1.428 raeburn 920: ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242 albertel 921: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465 raeburn 922: ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
923: ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
924: ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428 raeburn 925: ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479 raeburn 926: ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235 albertel 927: </select>
1.406 albertel 928: </span>
929: $show_all
930: </div>
931: <div class='LC_edit_problem_header_row2'>
932: <span class=\"LC_nobreak\">
1.405 albertel 933: ".&mt("Feedback Mode:")."
1.235 albertel 934: <select name='problemstatus'>
935: <option value=''></option>
1.242 albertel 936: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.512.2.6 raeburn 937: ".&option('no', 'problemstatus').&mt("Don't Show Incorrect/Correct Feedback")."</option>
1.405 albertel 938: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 939: </select>
1.406 albertel 940: </span>
941: ";
942:
1.376 albertel 943: } elsif ($Apache::lonhomework::parsing_a_task) {
944: $result.="
1.406 albertel 945: <div class='LC_edit_problem_header_row1'>
946: <span class=\"LC_nobreak\">
1.405 albertel 947: ".&mt("Problem Status:")."
1.376 albertel 948: <select name='problemstate'>
949: <option value=''></option>
950: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
951: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
952: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
953: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
954: </select>
1.406 albertel 955: </span>
956: $show_all
957: ";
958: }
959: $result.='
960: <span class="LC_nobreak">
961: '.&mt('Apply style file: ').'
962: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
963: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
964: </span>
1.422 www 965: </div>
966: <div class="LC_edit_problem_header_row1">'.
967: &Apache::lonxml::renderingoptions().'
1.406 albertel 968: </div>
969: <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
970: <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
971: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
972: </div>
1.453 bisitz 973: <hr />
1.406 albertel 974: <div class="LC_edit_problem_header_randomize_row">
975: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
976: <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488 www 977: <input type="text" name="rndseed" size="24" value="'.
1.406 albertel 978: $rndseed.'"
979: onchange="javascript:document.lonhomework.changerandseed.click()" />';
980:
981: if (!$Apache::lonhomework::parsing_a_task) {
982: my $numtoanalyze=$env{'form.numtoanalyze'};
983: if (!$numtoanalyze) { $numtoanalyze=20; }
1.408 albertel 984: $result .= '<span class="LC_nobreak">'.
985: &mt('[_1] for [_2] versions.',
1.416 raeburn 986: '<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419 bisitz 987: 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
988: ,'<input type="text" name="numtoanalyze" value="'.
1.408 albertel 989: $numtoanalyze.'" size="5" />').
990: &Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
991: '</span>';
992:
1.313 albertel 993: }
1.406 albertel 994:
995: $result.='
996: </div>
1.453 bisitz 997: <hr />
1.447 bisitz 998: <div>';
1.416 raeburn 999: $result.='<input type="hidden" name="problemmode" value="view" />';
1000: $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
1001: 'onclick="javascript:setmode(this.form,'."'edit'".')" />';
1002: $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
1003: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408 albertel 1004: $result.='
1005: </div>
1.453 bisitz 1006: <hr />
1.409 albertel 1007: '.&Apache::lonxml::message_location().'
1.406 albertel 1008: </div>';
1.159 albertel 1009: return $result;
1.48 albertel 1010: }
1011:
1.65 albertel 1012: sub initialize_storage {
1.357 albertel 1013: my ($given_symb) = @_;
1.353 albertel 1014: undef(%Apache::lonhomework::results);
1015: undef(%Apache::lonhomework::history);
1.357 albertel 1016: my ($symb,$courseid,$domain,$name) =
1.367 albertel 1017: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 1018:
1019: # anonymous users (CODEd exams) have no data
1020: if ($name eq 'anonymous'
1021: && !defined($domain)) {
1022: return;
1023: }
1024:
1.333 albertel 1025: if ($env{'request.state'} eq 'construct'
1026: || $symb eq ''
1027: || $Apache::lonhomework::type eq 'practice') {
1028:
1029: my $namespace = $symb || $env{'request.uri'};
1030: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 1031: ($env{'form.resetdata'} eq &mt('New Problem Variation')
1032: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 1033: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1034: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
1035: &Apache::lonxml::debug("Attempt reset");
1036: }
1.159 albertel 1037: %Apache::lonhomework::history=
1.333 albertel 1038: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.512.2.9 raeburn 1039: my ($temp)=keys(%Apache::lonhomework::history);
1.159 albertel 1040: &Apache::lonxml::debug("Return message of $temp");
1041: } else {
1042: %Apache::lonhomework::history=
1043: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1044: }
1.353 albertel 1045:
1.159 albertel 1046: #ignore error conditions
1.512.2.9 raeburn 1047: my ($temp)=keys(%Apache::lonhomework::history);
1.159 albertel 1048: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 1049: }
1050:
1.435 jms 1051: =pod
1052:
1053: =item finalize_storage()
1054:
1.512.2.9 raeburn 1055: Stores away the result hash to a student's environment;
1056: checks form.grade_ for specific values, otherwise stores
1057: to the running user's environment.
1058:
1059: &check_correctness_changes() is called in two circumstances
1060: in which the results hash is to be stored permanently, for
1061: grading triggered by a student's submission, where feedback on
1062: correctness is to be provided to the student.
1063:
1064: 1. Immediately prior to storing the results hash
1065:
1066: To handle the case where a student's submission (and award) were
1067: stored after history was retrieved in &initialize_storage(), e.g.,
1068: if a student submitted answers in quick succession (e.g., from
1069: multiple tabs). &Apache::inputtags::hidealldata() is called for
1070: any parts with out-of-order storage (i.e., correct then incorrect,
1071: where awarded >= 1 when correct).
1072:
1073: 2. Immediately after storing the results hash
1074:
1075: To handle the case where lond on the student's homeserver returns
1076: delay:N -- where N is the number of transactions between the last
1077: retrieved in &initialize_storage() and the last stored immediately
1078: before permanent storage of the current transaction via
1079: lond::store_handler(). &Apache::grades::makehidden() is called
1080: for any parts with out-of-order storage (i.e., correct then incorrect,
1081: where awarded >= 1 when correct).
1082:
1.512.2.24.2. (raeburn 1083:): Will call &store_aggregates() to increment totals for attempts,
1.512.2.9 raeburn 1084: students, and corrects, if running user has student role.
1.512.2.24.2. (raeburn 1085:):
1.435 jms 1086: =cut
1087:
1088:
1.65 albertel 1089: sub finalize_storage {
1.357 albertel 1090: my ($given_symb) = @_;
1.159 albertel 1091: my $result;
1.289 albertel 1092: if (%Apache::lonhomework::results) {
1.323 albertel 1093: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
1094: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 1095: my ($symb,$courseid,$domain,$name) =
1.367 albertel 1096: &Apache::lonnet::whichuser($given_symb);
1.512.2.24.2. (raeburn 1097:): my ($passback,$pbscope,$pbmap,$pbsymb,$pbtype,$crsdef,$ltinum,
1098:): $ltiref,$total,$possible,$dopassback);
1.333 albertel 1099: if ($env{'request.state'} eq 'construct'
1100: || $symb eq ''
1101: || $Apache::lonhomework::type eq 'practice') {
1102: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 1103: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 1104: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 1105: $namespace,'',$domain,$name);
1.159 albertel 1106: &Apache::lonxml::debug('Construct Store return message:'.$result);
1107: } else {
1.512.2.24.2. (raeburn 1108:): my ($laststore,$checkedparts,@parts,%postcorrect,%record);
1.512.2.9 raeburn 1109: if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
1110: (!$Apache::lonhomework::scantronmode) && (!defined($env{'form.grade_symb'})) &&
1111: (!defined($env{'form.grade_courseid'}))) {
1.512.2.24.2. (raeburn 1112:): if (($env{'request.lti.login'}) || ($env{'request.deeplink.login'})) {
1113:): my ($map)=&Apache::lonnet::decode_symb($symb);
1114:): $map = &Apache::lonnet::clutter($map);
1115:): if ($env{'request.lti.login'}) {
1116:): ($passback,$pbscope,$pbmap,$pbsymb,$ltinum,$ltiref) =
1117:): &needs_lti_passback($courseid,$symb,$map);
1118:): } elsif ($env{'request.deeplink.login'}) {
1119:): ($passback,$pbscope,$pbmap,$pbsymb,$crsdef,$ltinum,$ltiref) =
1120:): &needs_linkprot_passback($courseid,$symb,$map);
1121:): }
1122:): }
1.512.2.9 raeburn 1123: if ($Apache::lonhomework::history{'version'}) {
1124: $laststore = $Apache::lonhomework::history{'version'}.'='.
1125: $Apache::lonhomework::history{'timestamp'};
1126: } else {
1127: $laststore = '0=0';
1128: }
1.512.2.24.2. (raeburn 1129:): %record = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1.512.2.9 raeburn 1130: if ($record{'version'}) {
1131: my ($newversion,$oldversion,$oldtimestamp);
1132: if ($Apache::lonhomework::history{'version'}) {
1133: $oldversion = $Apache::lonhomework::history{'version'};
1134: $oldtimestamp = $Apache::lonhomework::history{'timestamp'};
1135: } else {
1136: $oldversion = 0;
1137: $oldtimestamp = 0;
1138: }
1139: if ($record{'version'} > $oldversion) {
1140: if ($record{'timestamp'} >= $oldtimestamp) {
1141: $laststore = $record{'version'}.'='.$record{'timestamp'};
1142: $newversion = $record{'version'} + 1;
1143: $checkedparts = 1;
1144: foreach my $key (keys(%Apache::lonhomework::results)) {
1145: if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1146: my $part = $1;
1147: if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
1148: push(@parts,$part);
1149: }
1150: }
1151: }
1152: if (@parts) {
1153: my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
1154: \%record,\@parts,$newversion,
1155: $oldversion);
1156: if (@parts_to_hide) {
1157: foreach my $part (@parts_to_hide) {
1158: $postcorrect{$part} = 1;
1159: &Apache::inputtags::hidealldata($part);
1160: }
1161: }
1162: }
1163: }
1164: }
1165: }
1166: }
1.159 albertel 1167: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
1.512.2.9 raeburn 1168: $symb,$courseid,$domain,$name,$laststore);
1169: if ($result =~ /^delay\:(\d+)$/) {
1170: my $numtrans = $1;
1171: my ($oldversion) = split(/=/,$laststore);
1172: if ($numtrans) {
1173: my $newversion = $oldversion + 1 + $numtrans;
1174: my @possparts;
1175: if ($checkedparts) {
1176: foreach my $part (@parts) {
1177: unless ($postcorrect{$part}) {
1178: push(@possparts,$part);
1179: }
1180: }
1181: } else {
1182: foreach my $key (keys(%Apache::lonhomework::results)) {
1183: if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1184: my $part = $1;
1185: unless ($postcorrect{$part}) {
1186: if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
1187: push(@possparts,$part);
1188: }
1189: }
1190: }
1191: }
1192: }
1193: if (@possparts) {
1194: my %newrecord = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1195: my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
1196: \%newrecord,\@possparts,$newversion,
1197: $oldversion);
1198: if (@parts_to_hide) {
1199: my $partslist = join(',',@parts_to_hide);
1200: &Apache::grades::makehidden($newversion,$partslist,\%newrecord,$symb,$domain,$name,1);
1201: }
1202: }
1203: }
1204: }
1.512.2.24.2. (raeburn 1205:): if ($passback) {
1206:): foreach my $key (keys(%Apache::lonhomework::results)) {
1207:): if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1208:): my $part = $1;
1209:): if ((($Apache::lonhomework::results{$key} =~ /^correct_/) ||
1210:): ($Apache::lonhomework::results{$key} eq 'incorrect_attempted')) &&
1211:): ($Apache::lonhomework::results{"resource.$part.tries"})) {
1212:): $dopassback = 1;
1213:): last;
1214:): }
1215:): }
1216:): }
1217:): }
1218:): if (($dopassback) && ($pbscope eq 'resource') && ($pbsymb eq $symb)) {
1219:): $total = 0;
1220:): $possible = 0;
1221:): my $navmap = Apache::lonnavmaps::navmap->new();
1222:): if (ref($navmap)) {
1223:): my $res = $navmap->getBySymb($symb);
1224:): if (ref($res)) {
1225:): my $partlist = $res->parts();
1226:): if (ref($partlist) eq 'ARRAY') {
1227:): foreach my $part (@{$partlist}) {
1228:): unless (exists($Apache::lonhomework::results{"resource.$part.solved"})) {
1229:): next if ($Apache::lonhomework::record{"resource.$part.solved"} =~/^excused/);
1230:): my $weight = &Apache::lonnet::EXT("resource.$part.weight",$symb);
1231:): $possible += $weight;
1232:): if (($record{'version'}) && (exists($record{"resource.$part.awarded"}))) {
1233:): my $awarded = $record{"resource.$part.awarded"};
1234:): if ($awarded) {
1235:): $total += $weight * $awarded;
1236:): }
1237:): }
1238:): }
1239:): }
1240:): }
1241:): }
1242:): }
1243:): foreach my $key (keys(%Apache::lonhomework::results)) {
1244:): if ($key =~ /^resource\.([^\.]+)\.awarded$/) {
1245:): my $part = $1;
1246:): my $weight = &Apache::lonnet::EXT("resource.$part.weight",$symb);
1247:): $possible += $weight;
1248:): my $awarded = $Apache::lonhomework::results{$key};
1249:): if ($awarded) {
1250:): $total += $weight * $awarded;
1251:): }
1252:): }
1253:): }
1254:): }
1.159 albertel 1255: &Apache::lonxml::debug('Store return message:'.$result);
1.470 raeburn 1256: &store_aggregates($symb,$courseid);
1.512.2.24.2. (raeburn 1257:): if ($dopassback) {
1258:): my $scoreformat = 'decimal';
1259:): if (($env{'request.lti.login'}) || ($env{'request.deeplink.login'})) {
1260:): if (ref($ltiref) eq 'HASH') {
1261:): if ($ltiref->{'scoreformat'} =~ /^(decimal|ratio|percentage)$/) {
1262:): $scoreformat = $1;
1263:): }
1264:): }
1265:): }
1266:): my ($pbid,$pburl,$pbtype);
1267:): if ($env{'request.lti.login'}) {
1268:): $pbid = $env{'request.lti.passbackid'};
1269:): $pburl = $env{'request.lti.passbackurl'};
1270:): $pbtype = 'lti';
1271:): } elsif ($env{'request.deeplink.login'}) {
1272:): $pbid = $env{'request.linkprotpbid'};
1273:): $pburl = $env{'request.linkprotpburl'};
1274:): $pbtype = 'linkprot';
1275:): }
1276:): my $ltigrade = {
1277:): 'ltinum' => $ltinum,
1278:): 'lti' => $ltiref,
1279:): 'crsdef' => $crsdef,
1280:): 'cid' => $courseid,
1281:): 'uname' => $env{'user.name'},
1282:): 'udom' => $env{'user.domain'},
1283:): 'pbid' => $pbid,
1284:): 'pburl' => $pburl,
1285:): 'pbtype' => $pbtype,
1286:): 'scope' => $pbscope,
1287:): 'pbmap' => $pbmap,
1288:): 'pbsymb' => $pbsymb,
1289:): 'format' => $scoreformat,
1290:): };
1291:): if ($pbscope eq 'resource') {
1292:): $ltigrade->{'total'} = $total;
1293:): $ltigrade->{'possible'} = $possible;
1294:): }
1295:): push(@Apache::lonhomework::ltipassback,$ltigrade);
1296:): }
1.159 albertel 1297: }
1.323 albertel 1298: } else {
1299: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 1300: }
1.159 albertel 1301: return $result;
1.65 albertel 1302: }
1303:
1.512.2.24.2. (raeburn 1304:): sub needs_lti_passback {
1305:): my ($courseid,$symb,$map) = @_;
1306:): if (($env{'request.lti.passbackid'}) && ($env{'request.lti.passbackurl'})) {
1307:): if ($courseid =~ /^($LONCAPA::match_domain)_($LONCAPA::match_courseid)$/) {
1308:): my ($cdom,$cnum) = ($1,$2);
1309:): my %lti = &Apache::lonnet::get_domain_lti($cdom,'provider');
1310:): if (ref($lti{$env{'request.lti.login'}}) eq 'HASH') {
1311:): if ($lti{$env{'request.lti.login'}}{'passback'}) {
1312:): my $itemnum = $env{'request.lti.login'};
1313:): my ($ltiscope,$ltiuri,$ltisymb) =
1314:): &LONCAPA::ltiutils::lti_provider_scope($env{'request.lti.uri'},
1315:): $cdom,$cnum,1);
1316:): my ($passback,$ltimap);
1317:): if ($ltiscope eq 'resource') {
1318:): if ($ltisymb eq $symb) {
1319:): $passback = 1;
1320:): }
1321:): } elsif ($ltiscope eq 'map') {
1322:): if ($ltiuri eq $map) {
1323:): $passback = 1;
1324:): $ltimap = $map;
1325:): }
1326:): } elsif ($ltiscope eq 'course') {
1327:): if (($env{'request.lti.uri'} eq "/$cdom/$cnum") || ($env{'request.lti.uri'} eq '')) {
1328:): $passback = 1;
1329:): }
1330:): }
1331:): return ($passback,$ltiscope,$ltimap,$ltisymb,$itemnum,$lti{$itemnum});
1332:): }
1333:): }
1334:): }
1335:): }
1336:): return;
1337:): }
1338:):
1339:): sub needs_linkprot_passback {
1340:): my ($courseid,$symb,$map) = @_;
1341:): if (($env{'request.linkprotpbid'}) && ($env{'request.linkprotpburl'})) {
1342:): if ($courseid =~ /^($LONCAPA::match_domain)_($LONCAPA::match_courseid)$/) {
1343:): my ($cdom,$cnum) = ($1,$2);
1344:): my ($deeplink_symb,$deeplink_map,$deeplink,$passback);
1345:): $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
1346:): if ($deeplink_symb) {
1347:): if ($deeplink_symb =~ /\.(page|sequence)$/) {
1348:): $deeplink_map = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($deeplink_symb))[2]);
1349:): my $navmap = Apache::lonnavmaps::navmap->new();
1350:): if (ref($navmap)) {
1351:): $deeplink = $navmap->get_mapparam(undef,$deeplink_map,'0.deeplink');
1352:): }
1353:): } else {
1354:): $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$deeplink_symb);
1355:): $deeplink_map = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($deeplink_symb))[0]);
1356:): }
1357:): if (($deeplink ne '') && ($env{'request.linkprot'} ne '')) {
1358:): my ($itemid,$tinyurl) = split(/:/,$env{'request.linkprot'});
1359:): if ($itemid =~ /^(\d+)(c|d)$/) {
1360:): my ($itemnum,$itemtype) = ($1,$2);
1361:): my ($crsdef,$lti_in_use);
1362:): if ($itemtype eq 'c') {
1363:): $crsdef = 1;
1364:): my %crslti = &Apache::lonnet::get_course_lti($cnum,$cdom,'provider');
1365:): $lti_in_use = $crslti{$itemnum};
1366:): } else {
1367:): my %domlti = &Apache::lonnet::get_domain_lti($cdom,'linkprot');
1368:): $lti_in_use = $domlti{$itemnum};
1369:): }
1370:): my ($state,$others,$listed,$scope,$protect,$display,$target,$exit) = split(/,/,$deeplink);
1371:): my $passback;
1372:): if ($scope eq 'resource') {
1373:): if ($deeplink_symb eq $symb) {
1374:): $passback = 1;
1375:): }
1376:): } elsif ($scope eq 'map') {
1377:): if (&Apache::lonnet::clutter($deeplink_map) eq $map) {
1378:): $passback = 1;
1379:): }
1380:): } elsif ($scope eq 'recurse') {
1381:): #FIXME check if $deeplink_map contains $map
1382:): $passback = 1;
1383:): }
1384:): return ($passback,$scope,$deeplink_map,$deeplink_symb,$crsdef,$itemnum,$lti_in_use);
1385:): }
1386:): }
1387:): }
1388:): }
1389:): }
1390:): }
1391:):
1.435 jms 1392: =pod
1393:
1.512.2.9 raeburn 1394: =item check_correctness_changes()
1395:
1396: For all parts for which current results contain a solved status
1397: of "incorrect_attempted", check if there was a transaction in which
1398: solved was set to "correct_by_student" in the time since the last
1399: transaction (retrieved when &initialize_storage() was called i.e.,
1400: when &start_problem() was called), unless:
1401: (a) questiontype parameter is set to survey or anonymous survey (+/- credit)
1402: (b) problemstatus is set to no or no_feedback_ever
1403: If such a transaction exists, and did not occur after "reset status"
1404: by a user with grading privileges, then the current transaction is an
1405: example of an out-of-order transaction (i.e., incorrect occurring after
1406: correct). Accordingly, the current transaction should be hidden.
1407:
1408: =cut
1409:
1410:
1411: sub check_correctness_changes {
1412: my ($symb,$courseid,$domain,$name,$record,$parts,$newversion,$oldversion) = @_;
1413: my @parts_to_hide;
1414: unless ((ref($record) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
1415: return @parts_to_hide;
1416: }
1417: if (@{$parts}) {
1418: my $usec;
1419: if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
1420: ($env{'request.course.id'} eq $courseid)) {
1421: $usec = $env{'request.course.sec'};
1422: } else {
1423: $usec = &Apache::lonnet::getsection($domain,$name,$courseid);
1424: }
1425: foreach my $id (@{$parts}) {
1426: next if (($Apache::lonhomework::results{'resource.'.$id.'.type'} =~ /survey/) ||
1427: (&Apache::lonnet::EXT("resource.$id.problemstatus",$symb,
1428: $domain,$name,$usec,undef,$courseid) =~ /^no/));
1429: my $reset;
1430: for (my $i=$newversion-1; $i>=$oldversion; $i--) {
1431: if (($record->{$i.':resource.'.$id.'.regrader'}) &&
1432: ($record->{$i.':resource.'.$id.'.tries'} eq '') &&
1433: ($record->{$i.':resource.'.$id.'.award'} eq '')) {
1434: $reset = 1;
1435: } elsif (($record->{$i.":resource.$id.solved"} eq 'correct_by_student') &&
1436: ($record->{$i.":resource.$id.awarded"} >= 1)) {
1437: unless ($reset) {
1438: push(@parts_to_hide,$id);
1439: last;
1440: }
1441: }
1442: }
1443: }
1444: }
1445: return @parts_to_hide;
1446: }
1447:
1448: =pod
1449:
1.435 jms 1450: item store_aggregates()
1451:
1452: Sends hash of values to be incremented in nohist_resourcetracker.db
1453: for the course. Increments total number of attempts, unique students
1454: and corrects for each part for an instance of a problem, as appropriate.
1455:
1456: =cut
1457:
1.285 raeburn 1458: sub store_aggregates {
1459: my ($symb,$courseid) = @_;
1.479 raeburn 1460: my (%aggregate,%anoncounter,%randtrycounter);
1.286 albertel 1461: my @parts;
1.288 albertel 1462: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
1463: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 1464: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 1465: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 1466: push(@parts, $1);
1.285 raeburn 1467: }
1468: }
1.286 albertel 1469: foreach my $part (@parts) {
1.470 raeburn 1470: if ($env{'request.role'} =~/^st/) {
1471: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
1472: eq 'APPROX_ANS' ||
1473: $Apache::lonhomework::results{'resource.'.$part.'.award'}
1474: eq 'EXACT_ANS') {
1475: $aggregate{$symb."\0".$part."\0correct"} = 1;
1476: }
1477: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1478: $aggregate{$symb."\0".$part."\0users"} = 1;
1479: } else {
1480: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1481: if ($last_reset) {
1482: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1483: $aggregate{$symb."\0".$part."\0users"} = 1;
1484: }
1485: }
1486: }
1487: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 1488: }
1.470 raeburn 1489: if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') ||
1.479 raeburn 1490: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
1491: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
1492: if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
1493: $randtrycounter{$symb."\0".$part} = 1;
1494: } else {
1495: $anoncounter{$symb."\0".$part} = 1;
1496: }
1.470 raeburn 1497: my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
1498: if ($needsrelease) {
1499: my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
1500: if ($curr_required eq '') {
1.471 raeburn 1501: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 1502: } else {
1503: my ($currmajor,$currminor) = split(/\./,$curr_required);
1504: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
1505: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471 raeburn 1506: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 1507: }
1.292 raeburn 1508: }
1509: }
1.285 raeburn 1510: }
1511: }
1.512.2.9 raeburn 1512: if (keys(%aggregate) > 0) {
1.289 albertel 1513: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 1514: $cdomain,$cname);
1515: }
1.472 raeburn 1516: if (keys(%anoncounter) > 0) {
1.481 raeburn 1517: &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
1518: $cdomain,$cname);
1.472 raeburn 1519: }
1.479 raeburn 1520: if (keys(%randtrycounter) > 0) {
1.481 raeburn 1521: &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
1522: $cdomain,$cname);
1.479 raeburn 1523: }
1.292 raeburn 1524: }
1.289 albertel 1525:
1.65 albertel 1526: sub checkout_msg {
1.211 albertel 1527: my %lt=&Apache::lonlocal::texthash(
1528: 'resource'=>'The resource needs to be checked out',
1529: '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.',
1530: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
1.512.2.1 raeburn 1531: 'checkout'=>'Check out Exam for Viewing',
1532: 'checkout?'=>'Check out Exam?');
1.352 albertel 1533: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 1534: return (<<ENDCHECKOUT);
1.211 albertel 1535: <h2>$lt{'resource'}</h2>
1536: <p>$lt{'id_expln'}</p>
1.449 bisitz 1537: <p class="LC_warning">$lt{'warning'}</p>
1.444 bisitz 1538: <form name="checkout" method="post" action="$uri">
1.91 albertel 1539: <input type="hidden" name="doescheckout" value="yes" />
1.512.2.4 raeburn 1540: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onclick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 1541: </form>
1542: ENDCHECKOUT
1543: }
1544:
1.252 albertel 1545: sub firstaccess_msg {
1.253 albertel 1546: my ($time,$symb)=@_;
1.414 albertel 1547: my $result;
1548: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1549: if ($interval[1] eq 'map') {
1550: my ($map)=&Apache::lonnet::decode_symb($symb);
1551: my $foldertitle=&Apache::lonnet::gettitle($map);
1552:
1553: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.504 golterma 1554: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$foldertitle)."</h2>"
1555: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1556: ,$foldertitle,$time)."</p>";
1.414 albertel 1557: } elsif ($interval[1] eq 'course') {
1558: my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.504 golterma 1559: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$course)."</h2>"
1.505 golterma 1560: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1.504 golterma 1561: ,$course,$time)."</p>";
1.414 albertel 1562: } else {
1563: my $title=&Apache::lonnet::gettitle($symb);
1.504 golterma 1564: $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.',$title)."</h2>"
1565: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
1566: ,$title,$time)."</p>";
1.414 albertel 1567: }
1.352 albertel 1568: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418 bisitz 1569: my $buttontext = &mt('Show Resource');
1570: my $timertext = &mt('Start Timer?');
1.512.2.24 raeburn 1571: my $shownsymb = &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb),'\'"<>&');
1.414 albertel 1572: $result .= (<<ENDCHECKOUT);
1.444 bisitz 1573: <form name="markaccess" method="post" action="$uri">
1.252 albertel 1574: <input type="hidden" name="markaccess" value="yes" />
1.512.2.24 raeburn 1575: <input type="hidden" name="symb" value="$shownsymb" />
1.512.2.4 raeburn 1576: <input type="button" name="accessbutton" value="$buttontext" onclick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252 albertel 1577: </form>
1578: ENDCHECKOUT
1.414 albertel 1579: return $result;
1.252 albertel 1580: }
1581:
1.204 albertel 1582: sub init_problem_globals {
1583: my ($type)=@_;
1584: #initialize globals
1.308 foxr 1585: # For problems, we start out in part 0 (outside a <part> tag).
1586: # and part 0 is used to describe the main body of the <problem>
1587: #
1.204 albertel 1588: if ($type eq 'problem') {
1589: $Apache::inputtags::part='0';
1590: @Apache::inputtags::partlist=('0');
1.405 albertel 1591: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 1592: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 1593:
1.266 albertel 1594: } elsif ($type eq 'library') {
1.204 albertel 1595: $Apache::inputtags::part='';
1596: @Apache::inputtags::partlist=();
1.405 albertel 1597: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 1598: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 1599:
1.304 albertel 1600: } elsif ($type eq 'Task') {
1601: $Apache::inputtags::part='0';
1602: @Apache::inputtags::partlist=('0');
1.405 albertel 1603: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 1604: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 1605: }
1.477 www 1606: @Apache::functionplotresponse::callscripts=();
1.204 albertel 1607: @Apache::inputtags::responselist = ();
1608: @Apache::inputtags::importlist = ();
1609: @Apache::inputtags::previous=();
1610: @Apache::inputtags::previous_version=();
1.512.2.10 raeburn 1611: $Apache::inputtags::leniency='';
1.204 albertel 1612: $Apache::structuretags::printanswer='No';
1613: @Apache::structuretags::whileconds=();
1614: @Apache::structuretags::whilebody=();
1615: @Apache::structuretags::whileline=();
1616: $Apache::lonhomework::scantronmode=0;
1.512.2.21 raeburn 1617: $Apache::lonhomework::randomizetrypart=0;
1.204 albertel 1618: undef($Apache::lonhomework::name);
1.358 albertel 1619: undef($Apache::lonhomework::default_type);
1620: undef($Apache::lonhomework::type);
1.204 albertel 1621: }
1622:
1623: sub reset_problem_globals {
1624: my ($type)=@_;
1625: undef(%Apache::lonhomework::history);
1626: undef(%Apache::lonhomework::results);
1627: undef($Apache::inputtags::part);
1.512.2.10 raeburn 1628: undef($Apache::inputtags::leniency);
1.498 raeburn 1629: if ($type eq 'Task') {
1630: undef($Apache::inputtags::slot_name);
1.512.2.9 raeburn 1631: } elsif ($type eq 'problem') {
1632: undef($Apache::lonhomework::rawrndseed);
1.498 raeburn 1633: }
1.208 albertel 1634: #don't undef this, lonhomework.pm takes care of this, we use this to
1635: #detect if we try to do 2 problems in one file
1636: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 1637: undef($Apache::lonhomework::name);
1.358 albertel 1638: undef($Apache::lonhomework::default_type);
1639: undef($Apache::lonhomework::type);
1640: undef($Apache::lonhomework::scantronmode);
1.512.2.21 raeburn 1641: undef($Apache::inputtags::randomizetrypart);
1.358 albertel 1642: undef($Apache::lonhomework::ignore_response_errors);
1.477 www 1643: undef(@Apache::functionplotresponse::callscripts);
1.405 albertel 1644: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 1645: }
1646:
1.241 albertel 1647: sub set_problem_state {
1.240 albertel 1648: my ($part)=@_;
1.284 albertel 1649: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 1650: $Apache::lonhomework::history{"resource.$part.solved"}=
1651: 'correct_by_student';
1652: }
1653: }
1654:
1.241 albertel 1655: sub get_problem_status {
1656: my ($part)=@_;
1.267 albertel 1657: my $problem_status;
1.284 albertel 1658: if ($env{'request.state'} eq 'construct' &&
1659: defined($env{'form.problemstatus'})) {
1660: $problem_status=$env{'form.problemstatus'};
1.267 albertel 1661: } else {
1662: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
1663: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 1664: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 1665: }
1666: return $problem_status;
1667: }
1668:
1.9 albertel 1669: sub start_problem {
1.326 albertel 1670: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 1671:
1.311 foxr 1672: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 1673: if (!$Apache::lonxml::metamode) {
1674: &Apache::lonxml::startredirection();
1675: }
1.311 foxr 1676:
1.308 foxr 1677: # Problems don't nest and we don't allow more than one <problem> in
1678: # a .problem file.
1679: #
1.184 albertel 1680: if ( $Apache::inputtags::part ne '' ||
1681: $Apache::lonhomework::parsing_a_problem) {
1682: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 1683: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 1684: return '';
1685: }
1.184 albertel 1686:
1687: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 1688: &init_problem_globals('problem');
1.166 albertel 1689:
1.284 albertel 1690: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 1691: $Apache::lonhomework::scantronmode=1;
1692: }
1.161 albertel 1693:
1.159 albertel 1694: if ($target ne 'analyze') {
1.415 raeburn 1695: my $type = &Apache::lonnet::EXT('resource.0.type');
1696: $Apache::lonhomework::type=$type;
1.284 albertel 1697: if (($env{'request.state'} eq 'construct') &&
1.410 albertel 1698: $env{'form.problemtype'} =~ /\S/) {
1.284 albertel 1699: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 1700: }
1.332 albertel 1701: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 1702: }
1.164 albertel 1703: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 1704: my $uri=$env{'request.uri'};
1.159 albertel 1705: if ($uri=~/\.(\w+)$/) {
1706: $Apache::lonhomework::type=$1;
1707: &Apache::lonxml::debug("Using type of $1");
1708: } else {
1709: $Apache::lonhomework::type='problem';
1710: &Apache::lonxml::debug("Using default type, problem, :$uri:");
1711: }
1.87 albertel 1712: }
1.301 albertel 1713: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 1714:
1.363 albertel 1715: &initialize_storage();
1.389 albertel 1716: if ($target ne 'analyze'
1717: && $env{'request.state'} eq 'construct') {
1718: &set_problem_state('0');
1719: }
1720:
1.366 albertel 1721: if ($target eq 'web') {
1722: &Apache::lonxml::debug(" grading history ");
1723: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1724: }
1.363 albertel 1725:
1.159 albertel 1726: #added vars to the scripting enviroment
1.213 albertel 1727: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 1728: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 1729: &Apache::run::run($expression,$safeeval);
1.159 albertel 1730: my $status;
1731: my $accessmsg;
1.508 raeburn 1732: my $resource_due;
1.159 albertel 1733:
1.343 albertel 1734: my $name= &get_resource_name($parstack,$safeeval);
1.512.2.16 raeburn 1735: my ($result,$form_tag_start,$slot_name,$slot,$probpartlist,$firstaccres);
1.506 raeburn 1736:
1737: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1738: $target eq 'tex') {
1739: if ($env{'form.markaccess'}) {
1740: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1.512.2.24.2. (raeburn 1741:): my ($timelimit) = ($interval[0] =~ /^(\d+)/);
1742:): my $is_set = &Apache::lonnet::set_first_access($interval[1],$timelimit);
1.512.2.16 raeburn 1743: unless (($is_set eq 'ok') || ($is_set eq 'already_set')) {
1744: $firstaccres = $is_set;
1745: }
1.506 raeburn 1746: }
1747: }
1748:
1.354 albertel 1749: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
1750: || $target eq 'edit') {
1.512.2.9 raeburn 1751: ($result,$form_tag_start,$probpartlist) =
1.350 albertel 1752: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1753: $name);
1.512.2.24.2. (raeburn 1754:): } elsif ((($target eq 'grade') && ($Apache::lonhomework::type eq 'randomizetry')) ||
1755:): ($target eq 'answer')) {
1.512.2.9 raeburn 1756: my ($symb)= &Apache::lonnet::whichuser();
1.512.2.22 raeburn 1757: if ($symb ne '') {
1758: my $navmap = Apache::lonnavmaps::navmap->new();
1759: if (ref($navmap)) {
1760: my $res = $navmap->getBySymb($symb);
1761: if (ref($res)) {
1762: $probpartlist = $res->parts();
1763: }
1.512.2.9 raeburn 1764: }
1765: }
1.350 albertel 1766: }
1767:
1.512.2.24.2. (raeburn 1768:): if (($target eq 'web') && ($env{'request.user_in_effect'})) {
1769:): &Apache::lonxml::get_all_text("/problem",$parser,$style);
1770:): return $result;
1771:): }
1772:):
1773:): if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1774:): $target eq 'tex') {
1775:):
1776:): my ($symb)= &Apache::lonnet::whichuser();
1777:): ($status,$accessmsg,$slot_name,$slot) =
1778:): &Apache::lonhomework::check_slot_access('0','problem',$symb,$probpartlist);
1779:): push (@Apache::inputtags::status,$status);
1780:): }
1781:):
1.284 albertel 1782: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 1783:
1.479 raeburn 1784: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159 albertel 1785: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1786: $target eq 'tex') {
1.479 raeburn 1787:
1.512.2.22 raeburn 1788: my ($symb) = &Apache::lonnet::whichuser();
1.159 albertel 1789: #handle rand seed in construction space
1.512.2.22 raeburn 1790: if (($env{'request.state'} eq 'construct') || ($symb eq '')) {
1791: my $partorder=&Apache::lonnet::metadata($env{'request.uri'},'partorder');
1792: if ($partorder ne '') {
1793: @{$probpartlist} = split(/,/,$partorder);
1794: }
1795: }
1.512.2.9 raeburn 1796: my $rndseed=&setup_rndseed($safeeval,$target,$probpartlist);
1797: if (($target eq 'grade') && &Apache::response::submitted()) {
1798: if ($Apache::lonhomework::type eq 'randomizetry') {
1799: $Apache::lonhomework::results{'resource.0.rndseed'}=$rndseed;
1800: } else {
1801: my @parts;
1802: if (ref($probpartlist) eq 'ARRAY') {
1803: @parts = @{$probpartlist};
1804: }
1805: unless (@parts) {
1806: $Apache::lonhomework::results{'resource.0.rndseed'}=$Apache::lonhomework::rawrndseed;
1807: }
1808: }
1809: }
1.479 raeburn 1810:
1.333 albertel 1811: if ($env{'request.state'} ne "construct" &&
1812: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.512.2.20 raeburn 1813: my $rndseedval = $rndseed;
1814: if (($symb eq '') && ($Apache::lonhomework::type eq 'randomizetry')) {
1815: $rndseedval = $env{'form.rndseed'};
1816: }
1.162 albertel 1817: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.512.2.20 raeburn 1818: $rndseedval.'" />'.
1.462 raeburn 1819: '<input type="submit" name="resetdata"
1820: value="'.&mt('New Problem Variation').'" />';
1.334 albertel 1821: if (exists($env{'form.username'})) {
1822: $form_tag_start.=
1.164 albertel 1823: '<input type="hidden" name="username"
1.284 albertel 1824: value="'.$env{'form.username'}.'" />';
1.334 albertel 1825: }
1.462 raeburn 1826: if ($env{'request.role.adv'}) {
1827: $form_tag_start.= ' <label class="LC_nobreak">'
1828: .'<input type="checkbox" name="showallfoils"';
1829: if (defined($env{'form.showallfoils'})) {
1830: $form_tag_start.=' checked="checked"';
1831: }
1832: $form_tag_start.= ' /> '
1833: .&mt('Show All Foils')
1834: .'</label>';
1835: }
1.417 www 1836: if ($Apache::lonhomework::type eq 'practice') {
1.428 raeburn 1837: $form_tag_start.=&practice_problem_header();
1.417 www 1838: }
1.462 raeburn 1839: $form_tag_start.='<hr />';
1.512.2.20 raeburn 1840: }
1841: if (($env{'request.state'} ne "construct") &&
1842: ($Apache::lonhomework::type eq 'randomizetry') &&
1843: ($status eq 'CAN_ANSWER')) {
1.512.2.21 raeburn 1844: my @parts;
1845: if (ref($probpartlist) eq 'ARRAY') {
1846: @parts = @{$probpartlist};
1847: }
1848: unless (@parts) {
1849: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1850: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1851: $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries,$symb);
1852: }
1.479 raeburn 1853: }
1.324 albertel 1854:
1.159 albertel 1855: my $expression='$external::datestatus="'.$status.'";';
1856: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
1857: &Apache::run::run($expression,$safeeval);
1858: &Apache::lonxml::debug("Got $status");
1.324 albertel 1859:
1.159 albertel 1860: if (( $status eq 'CLOSED' ) ||
1861: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1862: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 1863: ( $status eq 'BANNED') ||
1.216 albertel 1864: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 1865: ( $status eq 'NOT_IN_A_SLOT') ||
1.499 raeburn 1866: ( $status eq 'NOTRESERVABLE') ||
1867: ( $status eq 'RESERVABLE') ||
1868: ( $status eq 'RESERVABLE_LATER') ||
1.216 albertel 1869: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1870: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1871: $style);
1.159 albertel 1872: if ( $target eq "web" ) {
1.343 albertel 1873: my $msg;
1.159 albertel 1874: if ($status eq 'UNAVAILABLE') {
1.504 golterma 1875: $msg.='<p class="LC_error">'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</p>';
1.441 raeburn 1876: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.504 golterma 1877: $msg.='<p class="LC_warning">'.&mt('You are not currently signed up to work at this time and/or place.').'</p>';
1.499 raeburn 1878: } elsif (($status eq 'RESERVABLE') || ($status eq 'RESERVABLE_LATER') ||
1879: ($status eq 'NOTRESERVABLE')) {
1.504 golterma 1880: $msg.='<p class="LC_warning">'.&mt('Access requires reservation to work at specific time/place.').'</p>';
1.253 albertel 1881: } elsif ($status ne 'NOT_YET_VIEWED') {
1.504 golterma 1882: $msg.='<p class="LC_warning">'.&mt('Not open to be viewed').'</p>';
1.499 raeburn 1883: }
1.216 albertel 1884: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 1885: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 1886: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 1887: $msg.=&checkout_msg();
1.252 albertel 1888: } elsif ($status eq 'NOT_YET_VIEWED') {
1.512.2.16 raeburn 1889: if ($firstaccres) {
1890: $msg .= '<p class="LC_error">'.
1891: &mt('A problem occurred when trying to start the timer.').'</p>';
1892: }
1.253 albertel 1893: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 1894: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.441 raeburn 1895: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.499 raeburn 1896: } elsif ($status eq 'RESERVABLE') {
1897: $msg.=&mt('Available to make a reservation.').' '.&mt('Reservation window closes [_1].',
1898: &Apache::lonnavmaps::timeToHumanString($accessmsg,'end')).
1899: '<br />'.
1900: &Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1901: } elsif ($status eq 'RESERVABLE_LATER') {
1902: $msg.=&mt('Window to make a reservation will open [_1].',
1903: &Apache::lonnavmaps::timeToHumanString($accessmsg,'start'));
1904: } elsif ($status eq 'NOTRESERVABLE') {
1905: $msg.=&mt('Not available to make a reservation.');
1.159 albertel 1906: }
1907: $result.=$msg.'<br />';
1908: } elsif ($target eq 'tex') {
1.332 albertel 1909: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
1910: : '\begin{minipage}{\textwidth}';
1.443 foxr 1911: $result.='\noindent \vskip 1 mm '.
1.332 albertel 1912: $startminipage.'\vskip 0 mm';
1.159 albertel 1913: if ($status eq 'UNAVAILABLE') {
1.211 albertel 1914: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 1915: } else {
1.211 albertel 1916: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 1917: }
1918: }
1.324 albertel 1919: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 1920: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1921: $style);
1.324 albertel 1922: if ($target eq 'web') {
1.375 albertel 1923: $result .=
1924: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 1925: } elsif ($target eq 'grade') {
1926: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
1927: 'problem');
1928: }
1.159 albertel 1929: } elsif ($target eq 'web') {
1.508 raeburn 1930: if ($status eq 'CAN_ANSWER') {
1931: $resource_due = &Apache::lonhomework::due_date(0, $env{'request.symb'});
1932: if ($slot_name ne '') {
1933: my $checked_in =
1934: $Apache::lonhomework::history{'resource.0.checkedin'};
1935: if ($checked_in eq '') {
1936: # unproctored slot access, self checkin
1937: &Apache::bridgetask::check_in('problem',undef,undef,
1938: $slot_name);
1939: $checked_in =
1940: $Apache::lonhomework::results{"resource.0.checkedin"};
1941: }
1942: if ((ref($slot) eq 'HASH') && ($checked_in ne '')) {
1943: if ($slot->{'starttime'} < time()) {
1944: if (!$resource_due) {
1945: $resource_due = $slot->{'endtime'};
1946: } elsif ($slot->{'endtime'} < $resource_due) {
1947: $resource_due = $slot->{'endtime'};
1948: }
1949: }
1950: }
1951: }
1952: if ($resource_due) {
1953: my $time_left = $resource_due - time();
1954: if ($resource_due && ($time_left > 0) && ($target eq 'web')) {
1955: $result .= &Apache::lonhtmlcommon::set_due_date($resource_due);
1956: }
1957: }
1958: }
1.368 albertel 1959: $result.="\n $form_tag_start \t".
1.227 albertel 1960: '<input type="hidden" name="submitted" value="yes" />';
1961: # create a page header and exit
1.284 albertel 1962: if ($env{'request.state'} eq "construct") {
1963: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428 raeburn 1964: if ($Apache::lonhomework::type eq 'practice') {
1965: $result.= '<input type="submit" name="resetdata" '.
1966: 'value="'.&mt('New Problem Variation').'" />'.
1967: &practice_problem_header().'<hr />';
1.512.2.19 raeburn 1968: } elsif ($Apache::lonhomework::type eq 'randomizetry') {
1969: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1970: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1971: $result.=&randomizetry_problem_header($problemstatus,$reqtries);
1.428 raeburn 1972: }
1.227 albertel 1973: }
1974: # if we are viewing someone else preserve that info
1.284 albertel 1975: if (defined $env{'form.grade_symb'}) {
1.227 albertel 1976: foreach my $field ('symb','courseid','domain','username') {
1977: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 1978: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 1979: }
1.479 raeburn 1980: foreach my $field ('trial','questiontype') {
1981: if ($env{"form.grade_$field"} ne '') {
1982: $result .= '<input type="hidden" name="grade_'.$field.
1983: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1984: }
1985: }
1.159 albertel 1986: }
1.490 raeburn 1987: if ($env{'form.grade_imsexport'}) {
1988: $result = '';
1989: }
1.159 albertel 1990: } elsif ($target eq 'tex') {
1.319 foxr 1991: $result .= 'INSERTTEXFRONTMATTERHERE';
1.500 foxr 1992: $result .= &select_metadata_hyphenation();
1993:
1.319 foxr 1994:
1.99 sakharuk 1995: }
1.159 albertel 1996: } elsif ($target eq 'edit') {
1.343 albertel 1997: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 1998: $Apache::lonxml::warnings_error_header=
1999: &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 2000: my $temp=&Apache::edit::insertlist($target,$token);
2001: $result.=$temp;
2002: } elsif ($target eq 'modified') {
2003: $result=$token->[4];
2004: } else {
2005: # page_start returned a starting result, delete it if we don't need it
2006: $result = '';
1.99 sakharuk 2007: }
1.159 albertel 2008: return $result;
1.9 albertel 2009: }
2010:
2011: sub end_problem {
1.159 albertel 2012: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 2013: my $result;
1.310 foxr 2014:
1.321 albertel 2015: if (!$Apache::lonxml::metamode) {
2016: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 2017: $Apache::lonxml::post_evaluate=0;
1.321 albertel 2018: }
1.319 foxr 2019:
2020: if ($target eq 'tex') {
1.321 albertel 2021: # Figure out the front matter and replace the
2022: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
2023: # this in end_problem because whether or not we display due
2024: # dates depends on whether due dates have already been
2025: # displayed in the problem parts.
2026:
1.319 foxr 2027: my $frontmatter = '';
2028: my $startminipage = '';
2029: if (not $env{'form.problem_split'}=~/yes/) {
2030: $startminipage = '\begin{minipage}{\textwidth}';
2031: }
2032: my $id = $Apache::inputtags::part;
2033: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
2034: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9 raeburn 2035: my @packages = split(/,/,$packages);
1.319 foxr 2036: my $allow_print_points = 0;
2037: foreach my $partial_key (@packages) {
2038: if ($partial_key=~m/^part_0$/) {
2039: $allow_print_points=1;
2040: }
2041: }
2042: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
2043: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
2044: if (lc($env{'course.'.$env{'request.course.id'}.
2045: '.disableexampointprint'}) eq 'yes') {
2046: $allow_print_points=0;
2047: }
2048: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443 foxr 2049: 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 2050: &clear_required_languages();
1.319 foxr 2051: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
2052: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
2053:
2054: # Figure out what the due date is and if we need to print
2055: # it in the problem header. We have been logging the
2056: # last due date written to file.
2057:
2058: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
2059: my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448 bisitz 2060: my $duedate_text = &mt('Due date: [_1]'
2061: ,&Apache::lonlocal::locallocaltime($duetime));
1.319 foxr 2062: my $temp_file;
2063: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
2064:
2065: # Figure out what the last printed due date is or set it
2066: # to the epoch if no duedates have been printed.
2067:
2068: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
2069: if (-e $filename) {
2070: $temp_file = Apache::File->new($filename);
2071: my @due_file = <$temp_file>;
2072: $due_file_content = $due_file[$#due_file];
2073: chomp $due_file_content;
2074: }
2075:
2076: # We display the due date iff it is not the same as the last
2077: # duedate in problem header ($due_file_content), and
2078: # none of our parts displayed a duedate.
2079: #
2080: my $parts_with_displayduedate;
2081: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
2082: $parts_with_displayduedate =
2083: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
2084: } else {
2085: $parts_with_displayduedate = 0;
2086: }
2087: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
2088: $temp_file = Apache::File->new('>'.$filename);
2089: print $temp_file "$duetime\n";
2090: if (not $env{'request.symb'} =~ m/\.page_/) {
2091: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
2092: $frontmatter .= $begin_doc.
1.448 bisitz 2093: '\textit{'.$duedate_text.'} '.$toc_line;
1.319 foxr 2094: } else {
2095: $frontmatter.= $begin_doc.$toc_line;
1.463 foxr 2096: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) {
1.492 christia 2097: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2098: }
1.319 foxr 2099: }
2100: } else {
1.448 bisitz 2101: $frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319 foxr 2102: }
2103: } else {
2104: if (not $env{'request.symb'} =~ m/\.page_/) {
2105: $frontmatter .= $begin_doc.$toc_line;
1.463 foxr 2106: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) {
1.492 christia 2107: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2108: }
1.319 foxr 2109: } else {
1.381 albertel 2110: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 2111: }
2112: }
2113: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
1.512.2.24.2. (raeburn 2114:): } elsif ($target eq 'web') {
2115:): if ($env{'request.user_in_effect'}) {
2116:): &reset_problem_globals('problem');
2117:): $result .= &Apache::lonhtmlcommon::set_compute_end_time();
2118:): return $result;
2119:): }
1.319 foxr 2120: }
2121:
1.159 albertel 2122: my $status=$Apache::inputtags::status['-1'];
2123: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
2124: $target eq 'tex') {
1.249 albertel 2125: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 2126: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 2127: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
2128: &Apache::inputtags::grade;
1.324 albertel 2129: } elsif ($status eq 'NEEDS_CHECKIN') {
2130: # no need to grade, and don't want to hide data
1.249 albertel 2131: } else {
2132: # move any submission data to .hidden
2133: &Apache::inputtags::hidealldata($Apache::inputtags::part);
2134: }
1.159 albertel 2135: } elsif ( ($target eq 'web' || $target eq 'tex') &&
2136: $Apache::inputtags::part eq '0' &&
1.490 raeburn 2137: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED'
2138: && !$env{'form.grade_imsexport'}) {
1.159 albertel 2139: # if part is zero, no <part>s existed, so we need show the current
2140: # grading status
2141: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
2142: $result.= $gradestatus;
2143: }
2144: if (
1.284 albertel 2145: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 2146: ($target eq 'answer') || ($target eq 'tex')
2147: ) {
1.490 raeburn 2148: if (($target ne 'tex') &&
2149: ($env{'form.answer_output_mode'} ne 'tex') &&
2150: (!$env{'form.grade_imsexport'})) {
1.254 www 2151: $result.="</form>";
1.159 albertel 2152: }
2153: if ($target eq 'web') {
1.507 raeburn 2154: #
2155: # Closing </body></html> not added by end_page().
2156: # Added separately at end of this routine, after added
2157: # <script></script> so document will be valid xhtml.
2158: #
2159: $result.= &Apache::loncommon::end_page({'discussion' => 1,
2160: 'notbody' => 1});
1.159 albertel 2161: } elsif ($target eq 'tex') {
1.178 sakharuk 2162: my $endminipage = '';
1.284 albertel 2163: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 2164: $endminipage = '\end{minipage}';
2165: }
1.284 albertel 2166: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 2167: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 2168: } else {
1.262 sakharuk 2169: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 2170: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 2171: $result .= $endminipage.'\end{document} ';
2172: } else {
1.382 albertel 2173: $result .= $endminipage;
1.262 sakharuk 2174: }
1.159 albertel 2175: }
2176: }
2177: }
1.476 www 2178: if ($target eq 'web') {
1.512.2.21 raeburn 2179: $result.=&Apache::functionplotresponse::init_script();
2180: if ($Apache::lonhomework::default_type eq 'randomizetry') {
2181: my ($symb) = &Apache::lonnet::whichuser();
2182: if ((($env{'request.state'} eq 'construct') || ($symb eq '')) &&
2183: ($status eq 'CAN_ANSWER')) {
2184: unless (@Apache::inputtags::partlist > 1) {
2185: $result.= <<"ENDJS";
2186: <script type="text/javascript">
2187: // <![CDATA[
2188: \$(document).ready(function() {
2189: \$('#LC_randomizetry_header').css('display','block');
2190: });
2191: // ]]>
2192: </script>
2193: ENDJS
2194: }
2195: }
2196: }
1.476 www 2197: }
1.159 albertel 2198: if ($target eq 'grade') {
2199: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
2200: &finalize_storage();
2201: }
1.284 albertel 2202: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
2203: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 2204: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 2205: # normally we get it from above, but in CSTR
1.172 albertel 2206: # we always show answer mode too.
1.159 albertel 2207: }
2208: } elsif ($target eq 'meta') {
2209: if ($Apache::inputtags::part eq '0') {
1.179 albertel 2210: @Apache::inputtags::response=();
1.159 albertel 2211: $result=&Apache::response::mandatory_part_meta;
2212: }
1.215 albertel 2213: $result.=&Apache::response::meta_part_order();
1.258 albertel 2214: $result.=&Apache::response::meta_response_order();
1.159 albertel 2215: } elsif ($target eq 'edit') {
2216: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 2217: $result .= &problem_edit_footer();
1.320 albertel 2218: } elsif ($target eq 'modified') {
2219: $result .= $token->[2];
1.159 albertel 2220: }
1.155 albertel 2221:
1.284 albertel 2222: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 2223: &Apache::inputtags::check_for_duplicate_ids();
2224: }
1.204 albertel 2225:
2226: &reset_problem_globals('problem');
1.159 albertel 2227:
1.502 foxr 2228: #
2229: # This shouild be just above the return so that the
2230: # time put in the javascript is as late as possible in the
2231: # computation:
2232: #
2233: if ($target eq 'web') {
1.512.2.24.2. (raeburn 2234:): $result .= &Apache::lonhtmlcommon::dash_to_minus_js().
2235:): &Apache::lonhtmlcommon::set_compute_end_time();
1.507 raeburn 2236: #
2237: # Closing tags delayed so any <script></script> tags
2238: # not in head can appear inside body, for valid xhtml.
2239: #
2240: $result .= "</body>\n</html>";
1.502 foxr 2241: }
1.159 albertel 2242: return $result;
1.48 albertel 2243: }
2244:
1.108 albertel 2245:
1.48 albertel 2246: sub start_library {
1.159 albertel 2247: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 2248: my ($result,$form_tag_start);
1.371 albertel 2249: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 2250: &init_problem_globals('library');
2251: $Apache::lonhomework::type='problem';
2252: }
1.159 albertel 2253: if ($target eq 'edit') {
1.343 albertel 2254: ($result,$form_tag_start)=
2255: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
2256: 'Edit');
2257: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 2258: my $temp=&Apache::edit::insertlist($target,$token);
2259: $result.=$temp;
2260: } elsif ($target eq 'modified') {
2261: $result=$token->[4];
1.340 albertel 2262: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 2263: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 2264: && $env{'request.state'} eq "construct" ) {
1.159 albertel 2265: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 2266: ($result,$form_tag_start)=
2267: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
2268: $name);
1.479 raeburn 2269: my $rndseed=&setup_rndseed($safeeval,$target);
1.343 albertel 2270: $result.=" \n $form_tag_start".
1.159 albertel 2271: '<input type="hidden" name="submitted" value="yes" />';
2272: $result.=&problem_web_to_edit_header($rndseed);
1.428 raeburn 2273: if ($Apache::lonhomework::type eq 'practice') {
2274: $result.= '<input type="submit" name="resetdata" '.
2275: 'value="'.&mt('New Problem Variation').'" />'.
2276: &practice_problem_header().'<hr />';
2277: }
1.159 albertel 2278: }
2279: return $result;
1.48 albertel 2280: }
2281:
2282: sub end_library {
1.159 albertel 2283: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2284: my $result='';
2285: if ($target eq 'edit') {
2286: $result=&problem_edit_footer();
1.371 albertel 2287: } elsif ($target eq 'web'
2288: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
2289: && $env{'request.state'} eq "construct") {
1.349 albertel 2290: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.512.2.15 raeburn 2291: } elsif ($target eq 'meta') {
2292: $result.=&Apache::response::meta_response_order();
1.159 albertel 2293: }
1.371 albertel 2294: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
2295: &reset_problem_globals('library');
2296: }
1.159 albertel 2297: return $result;
1.197 www 2298: }
2299:
2300: sub start_definetag {
1.326 albertel 2301: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 2302:
2303: my $result;
2304:
2305: my $name = $token->[2]->{'name'};
1.326 albertel 2306: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 2307: if ($target eq 'web') {
2308: if ($name=~/^\//) {
2309: $result=
2310: '<br /><table class="LC_sty_end"><tr><th>'.
2311: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
2312: } else {
2313: $result=
2314: '<br /><table class="LC_sty_begin"><tr><th>'.
2315: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
2316: }
2317: $skip = &HTML::Entities::encode($skip, '<>&"');
2318: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 2319: }
2320: return $result;
2321: }
2322:
2323: sub end_definetag {
2324: return '';
1.1 albertel 2325: }
2326:
2327: sub start_block {
1.201 albertel 2328: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 2329:
2330: my $result;
1.1 albertel 2331:
1.339 albertel 2332: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2333: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 2334: my $code = $token->[2]->{'condition'};
1.385 albertel 2335: if (defined($code) && $code ne '') {
1.137 albertel 2336: if (!$Apache::lonxml::default_homework_loaded) {
2337: &Apache::lonxml::default_homework_load($safeeval);
2338: }
1.131 albertel 2339: $result = &Apache::run::run($code,$safeeval);
2340: &Apache::lonxml::debug("block :$code: returned :$result:");
2341: } else {
2342: $result='1';
2343: }
2344: if ( ! $result ) {
1.201 albertel 2345: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 2346: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2347: }
2348: $result='';
2349: } elsif ($target eq 'edit') {
2350: $result .=&Apache::edit::tag_start($target,$token);
2351: $result .=&Apache::edit::text_arg('Test Condition:','condition',
2352: $token,40);
2353: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2354: } elsif ($target eq 'modified') {
2355: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2356: $safeeval,'condition');
2357: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 2358: }
1.131 albertel 2359: return $result;
1.1 albertel 2360: }
2361:
2362: sub end_block {
1.167 www 2363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2364: my $result;
2365: if ($target eq "edit") {
2366: $result.= &Apache::edit::tag_end($target,$token,'');
2367: }
2368: return $result;
2369: }
1.500 foxr 2370: #
2371: # <languageblock [include='lang1,lang2...'] [exclude='lang1,lang2...']>
2372: # ...
2373: # </languageblock>
2374: #
2375: # This declares the intent to provide content that can be rendered in the
2376: # set of languages in the include specificatino but not in the exclude
2377: # specification. If a currently preferred language is in the include list
2378: # the content in the <languageblock>...</languageblock> is rendered
2379: # If the currently preferred language is in the exclude list,
2380: # the content in the <languageblock>..></languageblock is not rendered.
2381: #
2382: # Pathalogical case handling:
2383: # - Include specified, without the preferred language but exclude specified
2384: # also without the preferred langauge results in rendering the block.
2385: # - Exclude specified without include and excluden not containing a
2386: # preferred language renders the block.
2387: # - Include and exclude both specifying the preferred language does not
2388: # render the block.
2389: # - If neither include/exclude is specified, the block gets rendered.
2390: #
2391: # This tag has no effect when target is in {edit, modified}
2392: #
1.167 www 2393: sub start_languageblock {
1.201 albertel 2394: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 2395:
1.500 foxr 2396: my $result = '';
1.167 www 2397:
1.339 albertel 2398: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2399: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 2400: my $include = $token->[2]->{'include'};
2401: my $exclude = $token->[2]->{'exclude'};
1.436 raeburn 2402: my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.500 foxr 2403:
2404: # This should not even happen, since we should at least have the server language
2405:
2406: if (!$preferred_languages[0]) {
2407: $preferred_languages[0]='en';
2408: }
2409:
2410: # Now loop over all languages in order of preference
2411:
2412: my $render;
1.398 www 2413: foreach my $preferred_language (@preferred_languages) {
1.500 foxr 2414:
2415: # If neither include/nor exlude is present the block is going
2416: # to get rendered.
2417:
1.399 www 2418: my $found=0;
1.500 foxr 2419: $render=1;
2420:
2421: # If include is specified, don't render the block
2422: # unless the preferred language is included in the set.
2423:
1.398 www 2424: if ($include) {
1.500 foxr 2425: $render=0;
1.398 www 2426: foreach my $included_language (split(/\,/,$include)) {
2427: if ($included_language eq $preferred_language) {
1.500 foxr 2428: $render=1;
1.399 www 2429: $found=1;
1.500 foxr 2430: last; # Only need to find the first.
1.398 www 2431: }
2432: }
2433: }
1.500 foxr 2434: # Do we have an exclude argument?
2435: # If so, and one of the languages matches a preferred language
2436: # inhibit rendering the block. Note that in the pathalogical case the
2437: # author has specified a preferred language in both the include and exclude
2438: # attribte exclude is preferred.
2439:
1.398 www 2440: if ($exclude) {
1.500 foxr 2441: $render=1;
1.398 www 2442: foreach my $excluded_language (split(/\,/,$exclude)) {
2443: if ($excluded_language eq $preferred_language) {
1.500 foxr 2444: $render=0;
1.399 www 2445: $found=1;
1.500 foxr 2446: last; # Only need to find the first.
1.398 www 2447: }
2448: }
2449: }
1.500 foxr 2450: if ($found) {
2451: last; # Done on any match of include or exclude.
2452: }
1.398 www 2453: }
1.500 foxr 2454: # If $render not true skip the entire block until </languageblock>
2455: #
2456:
2457: if ( ! $render ) {
1.201 albertel 2458: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
2459: $style);
2460: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2461: }
1.500 foxr 2462: # If $render is true, we've not skipped the contents of the <languageglock>
2463: # and the normal loncapa processing flow will render it as a matter of course.
2464:
1.167 www 2465: } elsif ($target eq 'edit') {
2466: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 2467: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 2468: $token,40);
1.211 albertel 2469: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 2470: $token,40);
2471: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2472: } elsif ($target eq 'modified') {
2473: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 2474: $safeeval,'include',
2475: 'exclude');
1.167 www 2476: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2477: }
2478: return $result;
2479: }
2480:
2481: sub end_languageblock {
1.170 www 2482: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2483: my $result;
1.201 albertel 2484: if ($target eq "edit") {
1.170 www 2485: $result.= &Apache::edit::tag_end($target,$token,'');
2486: }
2487: return $result;
2488: }
1.500 foxr 2489: # languagblock specific tags:
2490: {
2491: # For chunks of a resource that has translations, this hash contains
2492: # the translations available indexed by language name.
2493: #
2494:
2495: my %available_texts;
1.170 www 2496:
1.500 foxr 2497: # <translated> starts a block of a resource that has multiple translations.
2498: # See the <lang> tag as well.
2499: # When </translated> is encountered if there is a translation for the
2500: # currently preferred language, that is rendered inthe web/tex/webgrade
2501: # targets. Otherwise, the default text is rendered.
2502: #
2503: # Note that <lang> is only registered for the duration of the
2504: # <translated>...</translated> block
2505: #
2506: # Pathalogical case handling:
2507: # - If there is no <lang> that specifies a 'default' and there is no
2508: # translation that matches a preferred language, nothing is rendered.
2509: # - Nested <translated>...</translated> might be linguistically supported by
2510: # XML due to the stack nature of tag registration(?) however the rendered
2511: # output will be incorrect because there is only one %available_texts
2512: # has and end_translated clears it.
2513: # - Material outside of a <lang>...</lang> block within the
2514: # <translated>...<translated> block won't render either e.g.:
2515: # <translated>
2516: # The following will be in your preferred langauge:
2517: # <lang which='en'>
2518: # This section in english
2519: # </lang>
2520: # <lang which='sgeiso'>
2521: # Hier es ist auf Deutsch.
2522: # </lang>
2523: # <lang which='sfriso'>
2524: # En Francais
2525: # </lang>
2526: # </translated>
2527: #
2528: # The introductory text prior to the first <lang> tag is not rendered.
2529: #
1.397 albertel 2530: sub start_translated {
2531: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2532: &Apache::lonxml::register('Apache::structuretags',('lang'));
2533: undef(%available_texts);
2534: }
2535:
2536: sub end_translated {
2537: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2538: my $result;
2539: #show the translation on viewable targets
2540: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
2541: # or non-viewable targets, if it's embedded in something that
2542: # wants the output
2543: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
2544: && &Apache::lonxml::in_redirection() ) ) {
2545: my @possibilities = keys(%available_texts);
2546: my $which =
2547: &Apache::loncommon::languages(\@possibilities) || 'default';
1.500 foxr 2548: if ($target eq 'tex') {
2549: $result = &select_hyphenation($which);
2550: }
2551: $result .= $available_texts{$which};
2552: if ($target eq 'tex') {
2553: $result .= &select_metadata_hyphenation(); # Restore original language.
2554: }
1.397 albertel 2555: }
2556: undef(%available_texts);
2557: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
2558: return $result;
2559: }
2560:
1.500 foxr 2561: # <lang [which='language-name'] [other='lang1,lang2...']>
2562: # Specifies that the block contained within it is a translation
2563: # for a specific language specified by the 'which' attribute. The
2564: # 'other' attribute can be used by itself or in conjunction with
2565: # which to specify this tag _may_ be used as a translation for some
2566: # list of languages. e.g.: <lang which='senisoUS' other='senisoCA,senisoAU,seniso'>
2567: # specifying that the block provides a translation for US (primary)
2568: # Canadian, Australian and UK Englush.
2569: #
2570: # Comment: this seems a bit silly why not just support a list of languages
2571: # e.g. <lang which='l1,l2...'> and ditch the other attribute?
2572: #
2573: # Effect:
2574: # The material within the <lang>..</lang> block is stored in the
2575: # specified set of $available_texts hash entries, the appropriate one
2576: # is selected at </translated> time.
2577: #
2578: # Pathalogical case handling:
2579: # If a language occurs multiple times within a <translated> block,
2580: # only the last one is rendered e.g.:
2581: #
2582: # <translated>
2583: # <lang which='senisoUS', other='senisoCA,senisoAU,seniso'>
2584: # Red green color blindness is quite common affecting about 7.8% of
2585: # the male population, but onloy about .65% of the female population.
2586: # </lang>
2587: # Red green colour blindness is quite common affecting about 7.8% of
2588: # the male population, but onloy about .65% of the female population.
2589: # <lang which='seniso', other='senisoCA,senisoAU'>
2590: # </translated>
2591: #
2592: # renders the correct spelling of color (colour) for people who have specified
2593: # a preferred language that is one of the British Commonwealth languages
2594: # even though those are also listed as valid selections for the US english
2595: # <lang> block.
2596: #
1.397 albertel 2597: sub start_lang {
2598: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2599: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2600: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
2601: &Apache::lonxml::startredirection();
2602: }
2603: return '';
2604: }
2605:
2606: sub end_lang {
2607: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2608: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2609: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
2610: my $result = &Apache::lonxml::endredirection();
2611: my $which = &Apache::lonxml::get_param('which',$parstack,
2612: $safeeval);
1.431 raeburn 2613: if ($which=~/\w/) {
2614: $available_texts{$which} = $result;
2615: }
2616: my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
2617: $safeeval);
2618: foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
2619: if ($language=~/\w/) {
2620: $available_texts{$language} = $result;
2621: }
1.427 bisitz 2622: }
2623:
1.397 albertel 2624: }
2625: return '';
2626: }
1.500 foxr 2627: } # end langauge block specific tags.
2628:
1.397 albertel 2629:
1.170 www 2630: sub start_instructorcomment {
1.201 albertel 2631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 2632:
2633: my $result;
2634:
1.339 albertel 2635: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2636: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468 raeburn 2637: $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284 albertel 2638: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 2639: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
2640: $parser,$style);
1.170 www 2641: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2642: }
2643: $result='';
2644: } elsif ($target eq 'edit') {
2645: $result .=&Apache::edit::tag_start($target,$token);
2646: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2647: }
2648: return $result;
2649: }
2650:
2651: sub end_instructorcomment {
1.159 albertel 2652: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 2653: my $result;
2654: if ($target eq "edit") {
2655: $result.= &Apache::edit::tag_end($target,$token,'');
2656: }
2657: return $result;
1.4 tsai 2658: }
2659:
2660: sub start_while {
1.326 albertel 2661: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2662:
1.160 albertel 2663: my $result;
1.339 albertel 2664: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2665: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 2666: my $code = $token->[2]->{'condition'};
1.4 tsai 2667:
1.160 albertel 2668: push( @Apache::structuretags::whileconds, $code);
2669: if (!$Apache::lonxml::default_homework_loaded) {
2670: &Apache::lonxml::default_homework_load($safeeval);
2671: }
2672: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 2673: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 2674: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 2675: push( @Apache::structuretags::whileline, $token->[5]);
2676: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 2677: if ( $result ) {
2678: &Apache::lonxml::newparser($parser,\$bodytext);
2679: }
2680: } elsif ($target eq 'edit') {
2681: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 2682: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 2683: $token,40);
2684: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2685: } elsif ($target eq 'modified') {
2686: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2687: $safeeval,'condition');
2688: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 2689: }
1.160 albertel 2690: return $result;
1.4 tsai 2691: }
2692:
2693: sub end_while {
1.159 albertel 2694: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 2695: my $result;
2696:
1.339 albertel 2697: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2698: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 2699: my $code = pop(@Apache::structuretags::whileconds);
2700: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 2701: my $line = pop(@Apache::structuretags::whileline);
2702: my $return = &Apache::run::run($code,$safeeval);
2703: my $starttime=time;
2704: my $error=0;
2705: while ($return) {
2706: if (time-$starttime >
2707: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 2708: $return = 0; $error=1; next;
1.161 albertel 2709: }
2710: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 2711: if ($target eq 'grade' || $target eq 'answer' ||
2712: $target eq 'analyze') {
2713: # grade/answer/analyze should produce no output but if we
2714: # are redirecting, the redirecter should know what to do
2715: # with the output
2716: if (!$Apache::lonxml::redirection) { undef($result); }
2717: }
1.161 albertel 2718: $return = &Apache::run::run($code,$safeeval);
2719: }
1.512.2.5 raeburn 2720: if ($error) {
2721: &Apache::lonxml::error(
2722: '<pre>'
2723: .&mt('Code ran too long. It ran for more than [_1] seconds.',
2724: $Apache::lonnet::perlvar{'lonScriptTimeout'})
2725: .&mt('This occurred while running <while> on line [_1].',
2726: $line)
2727: .'</pre>');
2728: }
1.160 albertel 2729: } elsif ($target eq "edit") {
2730: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 2731: }
1.160 albertel 2732: return $result;
1.1 albertel 2733: }
1.6 tsai 2734:
1.160 albertel 2735: # <randomlist show="1">
1.6 tsai 2736: # <tag1>..</tag1>
2737: # <tag2>..</tag2>
2738: # <tag3>..</tag3>
1.160 albertel 2739: # ...
1.6 tsai 2740: # </randomlist>
2741: sub start_randomlist {
1.326 albertel 2742: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2743: my $result;
1.339 albertel 2744: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
2745: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 2746: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 2747: my $b_parser= HTML::LCParser->new(\$body);
2748: $b_parser->xml_mode(1);
2749: $b_parser->marked_sections(1);
1.159 albertel 2750: my $b_tok;
2751: my @randomlist;
2752: my $list_item;
2753: while($b_tok = $b_parser->get_token() ) {
2754: if($b_tok->[0] eq 'S') { # start tag
2755: # get content of the tag until matching end tag
2756: # get all text upto the matching tag
2757: # and push the content into @randomlist
2758: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
2759: $b_parser);
2760: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
2761: push(@randomlist,$list_item);
2762: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
2763: # $list_item</b>";
2764: }
2765: if($b_tok->[0] eq 'T') { # text
2766: # what to do with text in between tags?
2767: # print "<b>TEXT $b_tok->[1]</b><br />";
2768: }
2769: # if($b_tok->[0] eq 'E') { # end tag, should not happen
2770: # print "<b>END-TAG $b_tok->[1]</b><br />";
2771: # }
2772: }
1.303 albertel 2773: if (@randomlist) {
2774: my @idx_arr = (0 .. $#randomlist);
1.512.2.14 raeburn 2775: if ($env{'form.code_for_randomlist'}) {
2776: &Apache::structuretags::shuffle(\@idx_arr,$target);
2777: undef($env{'form.code_for_randomlist'});
2778: } else {
2779: &Apache::structuretags::shuffle(\@idx_arr);
2780: }
1.303 albertel 2781: my $bodytext = '';
2782: my $show=$#randomlist;
2783: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
2784: $showarg--;
2785: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439 raeburn 2786: if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
2787: my @currlist;
2788: my $part = $Apache::inputtags::part;
2789: if ($part ne '') {
2790: if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
2791: my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
2792: if (!(grep(/^\Q$part\E$/,@currlist))) {
2793: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
2794: }
2795: } else {
2796: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
2797: }
2798: }
2799: }
1.512.2.9 raeburn 2800: for my $i (0 .. $show) {
2801: $bodytext .= "$randomlist[ $idx_arr[$i] ]";
1.303 albertel 2802: }
2803: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 2804: }
2805: } elsif ($target eq 'edit' ) {
2806: $result .=&Apache::edit::tag_start($target,$token);
2807: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
2808: $token,5);
2809: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2810: } elsif ($target eq 'modified' ) {
2811: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2812: $safeeval,'show');
2813: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2814: }
2815: return $result;
1.7 tsai 2816: }
2817:
2818: sub shuffle {
1.512.2.14 raeburn 2819: my ($a,$target) = @_;
1.7 tsai 2820: my $i;
1.303 albertel 2821: if (ref($a) eq 'ARRAY' && @$a) {
1.512.2.14 raeburn 2822: &Apache::response::pushrandomnumber(undef,$target);
1.159 albertel 2823: for($i=@$a;--$i;) {
2824: my $j=int(&Math::Random::random_uniform() * ($i+1));
2825: next if $i == $j;
2826: @$a[$i,$j] = @$a[$j,$i];
2827: }
1.251 albertel 2828: &Apache::response::poprandomnumber();
1.7 tsai 2829: }
1.6 tsai 2830: }
2831:
2832: sub end_randomlist {
1.159 albertel 2833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2834: my $result;
2835: if ($target eq 'edit' ) {
2836: $result=&Apache::edit::tag_end($target,$token,
2837: 'End Randomly Parsed Block');
2838: }
2839: return $result;
1.6 tsai 2840: }
2841:
1.283 albertel 2842: sub ordered_show_check {
2843: my $last_part=$Apache::inputtags::partlist[-2];
2844: my $in_order=
2845: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
2846: my $in_order_show=1;
2847: if ($last_part ne '0' && lc($in_order) eq 'yes') {
2848: $in_order_show=&Apache::response::check_status($last_part);
2849: }
2850: return $in_order_show;
2851: }
2852:
1.469 www 2853:
2854: sub start_startpartmarker {
2855: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2856: my $result='';
2857: if ($target eq 'edit') {
2858: $result=&Apache::edit::tag_start($target,$token);
2859: $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
2860: $result.=&Apache::edit::end_table();
2861:
2862: }
2863: return $result;
2864: }
2865:
2866: sub end_startpartmarker {
2867: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2868: my @result;
2869: if ($target eq 'edit') { $result[1]='no'; }
2870: return @result;
2871: }
2872:
2873: sub start_endpartmarker {
2874: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2875: my $result='';
2876: if ($target eq 'edit') {
2877: $result=&Apache::edit::tag_start($target,$token);
2878: $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
2879: $result.=&Apache::edit::end_table();
2880:
2881: }
2882: return $result;
2883: }
2884:
2885: sub end_endpartmarker {
2886: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2887: my @result;
2888: if ($target eq 'edit') { $result[1]='no'; }
2889: return @result;
2890: }
2891:
2892:
2893:
2894:
2895:
1.11 albertel 2896: sub start_part {
1.326 albertel 2897: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 2898: if (!$Apache::lonxml::metamode) {
2899: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
2900: # duedates.
2901: }
1.159 albertel 2902: my $result='';
1.386 albertel 2903: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 2904: $Apache::inputtags::part=$id;
1.177 albertel 2905: push(@Apache::inputtags::partlist,$id);
1.512.2.10 raeburn 2906: $Apache::inputtags::leniency='';
1.177 albertel 2907: @Apache::inputtags::response=();
1.159 albertel 2908: @Apache::inputtags::previous=();
2909: @Apache::inputtags::previous_version=();
1.405 albertel 2910: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 2911: &Apache::response::reset_params();
2912:
1.159 albertel 2913: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 2914: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
2915: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.512.2.9 raeburn 2916: if ($Apache::lonhomework::type eq 'randomizetry') {
2917: my $rndseed=&setup_rndseed($safeeval,$target);
2918: if (($target eq 'grade') && &Apache::response::submitted()) {
2919: $Apache::lonhomework::results{"resource.$id.rndseed"}=$rndseed;
2920: }
2921: } elsif (($target eq 'grade') && &Apache::response::submitted()) {
2922: $Apache::lonhomework::results{"resource.$id.rndseed"}=$Apache::lonhomework::rawrndseed;
2923: }
1.283 albertel 2924: my $in_order_show=&ordered_show_check();
1.214 albertel 2925: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 2926: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 2927: &Apache::run::run($expression,$safeeval);
1.159 albertel 2928:
2929: if ($target eq 'meta') {
1.224 www 2930: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
2931: return &Apache::response::mandatory_part_meta.
2932: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 2933: } elsif ($target eq 'web' || $target eq 'grade' ||
2934: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 2935: if ($hidden || !$in_order_show) {
1.326 albertel 2936: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 2937: } else {
2938: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
2939: push (@Apache::inputtags::status,$status);
2940: my $expression='$external::datestatus="'.$status.'";';
2941: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
2942: &Apache::run::run($expression,$safeeval);
1.284 albertel 2943: if ($env{'request.state'} eq 'construct') {
1.241 albertel 2944: &set_problem_state($Apache::inputtags::part);
1.240 albertel 2945: }
1.216 albertel 2946: if (( $status eq 'CLOSED' ) ||
2947: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 2948: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 2949: ( $status eq 'BANNED') ||
2950: ( $status eq 'UNAVAILABLE') ||
2951: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 2952: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
2953: $style);
1.159 albertel 2954: if ( $target eq "web" ) {
1.211 albertel 2955: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 2956: } elsif ( $target eq 'tex' ) {
1.284 albertel 2957: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 2958: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 2959: } else {
1.211 albertel 2960: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 2961: }
1.159 albertel 2962: }
2963: } else {
2964: if ($target eq 'tex') {
1.284 albertel 2965: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 2966: if ($$tagstack[-2] eq 'td') {
1.388 foxr 2967: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 2968: } else {
2969: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
2970: }
1.195 sakharuk 2971: }
1.159 albertel 2972: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 2973: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9 raeburn 2974: my @allkeys = split(/,/,$allkeys);
1.222 sakharuk 2975: my $allow_print_points = 0;
2976: foreach my $partial_key (@allkeys) {
1.230 albertel 2977: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 2978: if ($1 ne '0') {$allow_print_points=1;}
2979: }
2980: }
1.275 albertel 2981: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
2982: if (defined($maxtries) && $maxtries < 0) {
2983: $allow_print_points=0;
2984: }
1.302 albertel 2985: if (lc($env{'course.'.$env{'request.course.id'}.
2986: '.disableexampointprint'}) eq 'yes') {
2987: $allow_print_points=0;
2988: }
1.463 foxr 2989: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) {
1.492 christia 2990: $result .= '\vskip 10mm\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2991:
2992: }
1.233 www 2993: } elsif ($target eq 'web') {
1.479 raeburn 2994: if ($status eq 'CAN_ANSWER') {
2995: my $problemstatus = &get_problem_status($Apache::inputtags::part);
2996: my $num = scalar(@Apache::inputtags::partlist)-1;
1.512.2.21 raeburn 2997: if ((($Apache::lonhomework::default_type eq 'randomizetry') ||
2998: ($Apache::lonhomework::randomizetrypart)) &&
2999: ($Apache::lonhomework::type ne 'randomizetry')) {
3000: $result .= &randomizetry_part_header($problemstatus,'none',$num);
3001: } elsif ($Apache::lonhomework::type eq 'randomizetry') {
3002: $Apache::lonhomework::randomizetrypart = 1;
3003: my $reqtries = &Apache::lonnet::EXT("resource.$id.randomizeontries");
1.479 raeburn 3004: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
3005: }
3006: }
1.475 raeburn 3007: $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159 albertel 3008: }
3009: }
3010: }
3011: } elsif ($target eq 'edit') {
3012: $result.=&Apache::edit::tag_start($target,$token);
3013: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
3014: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 3015: ' '.
3016: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 3017: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
3018: } elsif ($target eq 'modified') {
3019: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 3020: $safeeval,'id','display');
1.159 albertel 3021: if ($constructtag) {
1.225 albertel 3022: #limiting ids to only letters numbers, and space
1.224 www 3023: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 3024: $result = &Apache::edit::rebuild_tag($token);
3025: }
3026: }
3027: return $result;
1.11 albertel 3028: }
3029:
3030: sub end_part {
1.159 albertel 3031: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3032: &Apache::lonxml::debug("in end_part $target ");
3033: my $status=$Apache::inputtags::status['-1'];
3034: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 3035: my $in_order_show=&ordered_show_check();
1.321 albertel 3036: my $result;
3037: if (!$Apache::lonxml::metamode) {
3038: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 3039: $Apache::lonxml::post_evaluate=0;
1.321 albertel 3040: }
1.312 albertel 3041: if ($target eq 'grade') {
1.249 albertel 3042: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 3043: !$hidden && $in_order_show) {
1.311 foxr 3044: $result.=&Apache::inputtags::grade;
1.249 albertel 3045: } else {
3046: # move any submission data to .hidden
3047: &Apache::inputtags::hidealldata($Apache::inputtags::part);
3048: }
1.283 albertel 3049: } elsif (($target eq 'web' || $target eq 'tex') &&
3050: !$hidden && $in_order_show) {
1.159 albertel 3051: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
3052: $target);
1.490 raeburn 3053: if (($Apache::lonhomework::type eq 'exam' && $target eq 'tex') ||
3054: ($env{'form.grade_imsexport'})) {
1.212 albertel 3055: $gradestatus='';
3056: }
1.311 foxr 3057: $result.=$gradestatus;
1.512.2.24.2. (raeburn 3058:): if ($$tagstack[-2] eq 'td' and $target eq 'tex') {
3059:): if (not $env{'form.problem_split'}=~/yes/) {
3060:): $result.='\end{minipage}';
3061:): }
3062:): }
1.181 albertel 3063: } elsif ($target eq 'edit') {
1.311 foxr 3064: $result.=&Apache::edit::end_table();
1.322 albertel 3065: } elsif ($target eq 'modified') {
3066: $result .= $token->[2];
1.159 albertel 3067: }
3068: pop @Apache::inputtags::status;
3069: $Apache::inputtags::part='';
1.512.2.10 raeburn 3070: $Apache::inputtags::leniency='';
1.295 albertel 3071: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 3072: return $result;
1.11 albertel 3073: }
1.1 albertel 3074:
1.25 albertel 3075: sub start_preduedate {
1.326 albertel 3076: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 3077: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3078: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 3079: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 3080: if (!$Apache::lonhomework::scantronmode &&
3081: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 3082: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
3083: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 3084: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 3085: }
1.24 albertel 3086: }
1.159 albertel 3087: return '';
1.24 albertel 3088: }
3089:
1.25 albertel 3090: sub end_preduedate {
1.159 albertel 3091: return '';
1.24 albertel 3092: }
3093:
1.369 foxr 3094: # In all the modes where <postanswerdate> text is
3095: # displayable, all we do is eat up the text between the start/stop
3096: # tags if the conditions are not right to display it.
1.25 albertel 3097: sub start_postanswerdate {
1.326 albertel 3098: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 3099: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
3100: &Apache::lonnet::allowed('pav',
3101: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 3102: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 3103: $target eq 'tex' ) {
1.300 albertel 3104: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 3105: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
3106: (($target eq 'tex') && !$pav)) {
1.326 albertel 3107: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 3108: }
3109: }
3110: return '';
1.24 albertel 3111: }
3112:
1.25 albertel 3113: sub end_postanswerdate {
1.159 albertel 3114: return '';
1.24 albertel 3115: }
3116:
1.25 albertel 3117: sub start_notsolved {
1.326 albertel 3118: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3119: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 3120: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 3121: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
3122: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 3123: if ($gradestatus =~ /^correct/ &&
3124: &Apache::response::show_answer()) {
1.159 albertel 3125: &Apache::lonxml::debug("skipping");
1.326 albertel 3126: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 3127: }
1.24 albertel 3128: }
1.159 albertel 3129: return '';
1.24 albertel 3130: }
3131:
1.25 albertel 3132: sub end_notsolved {
1.159 albertel 3133: return '';
1.24 albertel 3134: }
3135:
3136: sub start_solved {
1.326 albertel 3137: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3138: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3139: $target eq 'tex') {
3140: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 3141: if ($gradestatus !~ /^correct/ ||
3142: !&Apache::response::show_answer()) {
1.326 albertel 3143: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 3144: }
1.24 albertel 3145: }
1.159 albertel 3146: return '';
1.24 albertel 3147: }
3148:
3149: sub end_solved {
1.248 albertel 3150: return '';
3151: }
3152:
3153: sub start_problemtype {
1.326 albertel 3154: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 3155: my $result;
1.339 albertel 3156: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3157: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 3158: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
3159: if (!defined($mode)) { $mode='show'; }
3160: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
3161: my $found=0;
3162: foreach my $type (split(',',$for)) {
3163: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
3164: }
3165: if ($mode eq 'show' && !$found) {
1.326 albertel 3166: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 3167: }
3168: if ($mode eq 'hide' && $found) {
1.326 albertel 3169: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 3170: }
3171: } elsif ($target eq 'edit') {
3172: $result .=&Apache::edit::tag_start($target,$token);
3173: $result.=&Apache::edit::select_arg('Mode:','mode',
3174: [['show','Show'],
3175: ['hide','Hide']]
3176: ,$token);
3177: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1.512.2.2 raeburn 3178: [ ['exam','Exam/Quiz Problem'],
1.248 albertel 3179: ['survey','Survey'],
1.465 raeburn 3180: ['surveycred','Survey (with credit)'],
3181: ['anonsurvey','Anonymous Survey'],
3182: ['anonsurveycred','Anonymous Survey (with credit)'],
1.428 raeburn 3183: ['problem','Homework Problem'],
1.479 raeburn 3184: ['practice','Practice Problem'],
3185: ['randomizetry','New Randomization Each Try'] ]
1.248 albertel 3186: ,$token);
3187: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3188: } elsif ($target eq 'modified') {
3189: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3190: $safeeval,'mode','for');
3191: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3192: }
3193: return $result;
3194: }
3195:
3196: sub end_problemtype {
1.159 albertel 3197: return '';
1.24 albertel 3198: }
1.34 albertel 3199:
3200: sub start_startouttext {
1.159 albertel 3201: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3202: my @result=(''.'');
3203: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 3204:
3205: my $nesting =
3206: &Apache::lonxml::set_state('outtext',
3207: &Apache::lonxml::get_state('outtext')+1);
3208: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
3209: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
3210: }
1.159 albertel 3211: return (@result);
1.34 albertel 3212: }
1.159 albertel 3213:
1.34 albertel 3214: sub end_startouttext {
1.326 albertel 3215: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3216: my $result='';
3217: my $text='';
3218: if ($target eq 'edit') {
1.424 foxr 3219: my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326 albertel 3220: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.512.2.11 raeburn 3221: $result.=&Apache::edit::start_table($token)."<tr><td>".&Apache::loncommon::insert_folding_button()
3222: ." ".&mt('Text Block')."</td>"
1.438 bisitz 3223: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437 raeburn 3224: .&Apache::edit::deletelist($target,$token)
1.474 raeburn 3225: .'</span></td>'
1.512.2.12 raeburn 3226: .'<td><span id="math_'.$areaid.'">';
3227: if ($env{'environment.nocodemirror'}) {
3228: $result.=&Apache::lonhtmlcommon::dragmath_button($areaid,1);
3229: } else {
3230: $result.=' ';
3231: }
3232: $result.='</span></td>'
1.474 raeburn 3233: .'<td>'
3234: .&Apache::edit::insertlist($target,$token)
3235: .'</td>'
1.512.2.5 raeburn 3236: .'<td class="LC_edit_problem_latexhelper">' .
1.474 raeburn 3237: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 3238: &Apache::edit::end_row().
1.362 albertel 3239: &Apache::edit::start_spanning_row()."\n".
1.255 www 3240: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 3241: }
3242: if ($target eq 'modified') {
1.219 albertel 3243: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 3244: }
3245: if ($target eq 'tex') {
3246: $result .= '\noindent ';
3247: }
3248: return $result;
1.34 albertel 3249: }
1.159 albertel 3250:
1.34 albertel 3251: sub start_endouttext {
1.159 albertel 3252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3253: my $result='';
3254: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
3255: if ($target eq "modified") {
3256: $result='<endouttext />'.
1.377 albertel 3257: &Apache::edit::handle_insertafter('startouttext');
3258: }
1.404 albertel 3259:
3260: my $nesting =
3261: &Apache::lonxml::set_state('outtext',
3262: &Apache::lonxml::get_state('outtext')-1);
3263: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
3264: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
3265: &Apache::lonxml::set_state('outtext', 0);
3266: }
1.159 albertel 3267: return $result;
1.34 albertel 3268: }
1.159 albertel 3269:
1.34 albertel 3270: sub end_endouttext {
1.159 albertel 3271: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3272: my @result=('','');
3273: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
3274: return (@result);
1.34 albertel 3275: }
1.159 albertel 3276:
1.45 albertel 3277: sub delete_startouttext {
1.326 albertel 3278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
3279: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 3280: my $text=$$parser['-1']->get_text("/endouttext");
3281: my $ntoken=$$parser['-1']->get_token();
3282: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
3283: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
3284: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
3285: # they did the last time round
3286: &Apache::lonxml::increasedepth($ntoken);
3287: &Apache::lonxml::decreasedepth($ntoken);
3288: return 1;
1.193 www 3289: }
3290:
3291: sub start_simpleeditbutton {
3292: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3293: my $result='';
1.284 albertel 3294: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 3295: ($target eq 'web') &&
1.330 albertel 3296: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 3297: my $url=$env{'request.noversionuri'};
1.193 www 3298: $url=~s/\?.*$//;
1.367 albertel 3299: my ($symb) = &Apache::lonnet::whichuser();
1.451 bisitz 3300: # Warning makes more sense and is more important on edit screen
1.442 bisitz 3301: # $result='<p class="LC_warning">'
3302: # .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
3303: # .&Apache::loncommon::help_open_topic('Caching')
3304: # .'</p>';
1.486 www 3305: $result.=&Apache::loncommon::head_subbox(
3306: &Apache::lonhtmlcommon::start_funclist()
1.451 bisitz 3307: .&Apache::lonhtmlcommon::add_item_funclist(
3308: '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
3309: .&mt('Edit').'</a>')
1.486 www 3310: .&Apache::lonhtmlcommon::end_funclist());
1.442 bisitz 3311:
1.193 www 3312: }
3313: return $result;
3314: }
3315:
3316: sub end_simpleeditbutton {
3317: return '';
1.45 albertel 3318: }
1.34 albertel 3319:
1.428 raeburn 3320: sub practice_problem_header {
3321: return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
3322: '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
3323: '</span>';
3324: }
3325:
1.479 raeburn 3326: sub randomizetry_problem_header {
1.512.2.21 raeburn 3327: my ($problemstatus,$reqtries,$symb) = @_;
1.479 raeburn 3328: my ($header,$text);
3329: if ($reqtries > 1) {
3330: $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
3331: if (($problemstatus eq 'no') ||
3332: ($problemstatus eq 'no_feedback_ever')) {
3333: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
3334: } else {
3335: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
3336: }
3337: } else {
3338: $header = &mt('New Problem Variation Each Try');
3339: if (($problemstatus eq 'no') ||
3340: ($problemstatus eq 'no_feedback_ever')) {
3341: $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
3342:
3343: } else {
3344: $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
3345: }
3346: }
1.512.2.21 raeburn 3347: if (($env{'request.state'} eq "construct") || ($symb eq '')) {
3348: return '<div class="LC_info" id="LC_randomizetry_header" style="display:none">'.
3349: '<h3>'.$header.'</h3><span class="LC_info">'.$text.'</span><hr /></div>';
3350: } else {
3351: return '<h3 class="LC_info">'.$header.'</h3>'.
3352: '<span class="LC_info">'.$text.'</span><hr />';
3353: }
1.479 raeburn 3354: }
3355:
3356: sub randomizetry_part_header {
3357: my ($problemstatus,$reqtries,$num) = @_;
3358: my ($header,$text);
3359: if ($reqtries eq 'none') {
3360: $header = &mt('No Question Variation');
1.512.2.23 raeburn 3361: $text = &mt('For this question there will be no new variation after a try.');
1.479 raeburn 3362: } elsif ($reqtries > 1) {
3363: $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
3364: if (($problemstatus eq 'no') ||
3365: ($problemstatus eq 'no_feedback_ever')) {
3366: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
3367: } else {
3368: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
3369: }
3370: } else {
3371: $header = &mt('New Question Variation For Each Try');
3372: if (($problemstatus eq 'no') ||
3373: ($problemstatus eq 'no_feedback_ever')) {
3374: $text = &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
3375: } else {
3376: $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
3377: }
3378: }
3379: my $output;
3380: if ($num > 1) {
3381: $output .= '<hr />';
3382: }
3383: $output .= '<span class="LC_info"><h4>'.$header.'</h4></span>'.
3384: '<span class="LC_info">'.$text.'</span><br /><br />';
3385: return $output;
3386: }
3387:
1.1 albertel 3388: 1;
3389: __END__
1.435 jms 3390:
3391: =pod
3392:
3393: =back
3394:
3395: =cut
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