Annotation of loncom/homework/structuretags.pm, revision 1.512.2.24.2.3
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 1.512.2.24.2.2 2023/02/03 17:09:41 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 * $timeout;
273: }
1.400 albertel 274: return &Apache::loncommon::resize_textarea_js().
1.512.2.11 raeburn 275: &Apache::loncommon::colorfuleditor_js().
1.416 raeburn 276: &setmode_javascript().
1.512.2.9 raeburn 277: <<"JS";
1.400 albertel 278: <script type="text/javascript">
1.483 raeburn 279: // <![CDATA[
1.494 raeburn 280: function setSubmittedPart (part,prefix) {
281: if (typeof(prefix) == 'undefined') {
282: this.document.lonhomework.submitted.value="part_"+part;
283: } else {
284: for (var i=0;i<this.document.lonhomework.elements.length;i++) {
285: if (this.document.lonhomework.elements[i].name == prefix+'submitted') {
286: this.document.lonhomework.elements[i].value="part_"+part;
287: }
288: }
289: }
1.400 albertel 290: }
291:
1.512.2.9 raeburn 292: function disableAutoComplete (id) {
293: var field = document.getElementById(id);
294: if (field != null && field != undefined){
295: if ('autocomplete' in field) {
296: field.autocomplete = "off";
297: } else {
298: field.setAttribute("autocomplete", "off");
299: }
300: }
301: }
302:
1.400 albertel 303: function image_response_click (which, e) {
304: init_geometry();
305: if (!e) { e = window.event; } //IE
306: var input_element = document.lonhomework.elements[which];
1.401 albertel 307: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 308: var token = token_element.value;
1.401 albertel 309: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 310: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
311: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
312: var click = x+':'+y;
313: input_element.value = click;
1.485 raeburn 314: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
1.400 albertel 315: }
1.512.2.9 raeburn 316:
317: var submithandled = 0;
318: var keypresshandled = 0;
319: var postsubmit = '$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:
1.416 raeburn 388: sub setmode_javascript {
389: return <<"ENDSCRIPT";
390: <script type="text/javascript">
1.485 raeburn 391: // <![CDATA[
1.416 raeburn 392: function setmode(form,probmode) {
1.512.2.13 raeburn 393: var initial = form.problemmode.value;
1.416 raeburn 394: form.problemmode.value = probmode;
395: form.submit();
1.512.2.13 raeburn 396: form.problemmode.value = initial;
1.416 raeburn 397: }
1.485 raeburn 398: // ]]>
1.416 raeburn 399: </script>
400: ENDSCRIPT
401: }
402:
1.48 albertel 403: sub page_start {
1.345 albertel 404: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
405: $extra_head)=@_;
1.159 albertel 406: my %found;
1.207 albertel 407: foreach my $taginside (@$tagstack) {
1.159 albertel 408: foreach my $taglookedfor ('html','body','form') {
409: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
410: }
411: }
412:
1.343 albertel 413: if ($target eq 'tex') {
414: return
415: &Apache::londefdef::start_html($target,$token,$tagstack,
416: $parstack,$parser,$safeeval);
417: }
418:
1.474 raeburn 419: $extra_head .= &homework_js().
420: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
421: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.512.2.12 raeburn 422: my %textarea_args;
423: if (($env{'request.state'} ne 'construct') ||
424: ($env{'environment.nocodemirror'})) {
425: %textarea_args = (
1.474 raeburn 426: dragmath => 'math',
427: );
1.512.2.12 raeburn 428: }
1.474 raeburn 429: $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1.425 raeburn 430: }
1.478 raeburn 431: my $is_task = ($env{'request.uri'} =~ /\.task$/);
1.512.2.9 raeburn 432: my ($needs_upload,$partlist);
1.495 raeburn 433: my ($symb)= &Apache::lonnet::whichuser();
434: my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
1.478 raeburn 435: if ($is_task) {
1.495 raeburn 436: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
1.493 raeburn 437: } else {
438: if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.uploadedfiletypes") ne '') {
1.495 raeburn 439: unless ($env{'request.state'} eq 'construct') {
440: my $navmap = Apache::lonnavmaps::navmap->new();
441: if (ref($navmap)) {
442: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 443: my $is_page;
444: if (ref($mapres)) {
445: $is_page = $mapres->is_page();
446: }
447: unless ($is_page) {
1.495 raeburn 448: $needs_upload = 1;
449: }
1.512.2.9 raeburn 450: if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
451: my $res = $navmap->getBySymb($symb);
452: if (ref($res)) {
453: $partlist = $res->parts();
454: }
455: }
1.495 raeburn 456: }
457: }
1.493 raeburn 458: } else {
459: unless ($env{'request.state'} eq 'construct') {
460: my $navmap = Apache::lonnavmaps::navmap->new();
461: if (ref($navmap)) {
1.495 raeburn 462: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 463: my $is_page;
464: if (ref($mapres)) {
465: $is_page = $mapres->is_page();
466: }
1.512.2.9 raeburn 467: if ($is_page) {
468: if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
469: my $res = $navmap->getBySymb($symb);
470: if (ref($res)) {
471: $partlist = $res->parts();
472: }
473: }
474: } else {
1.495 raeburn 475: my $res = $navmap->getBySymb($symb);
476: if (ref($res)) {
1.512.2.9 raeburn 477: $partlist = $res->parts();
1.495 raeburn 478: if (ref($partlist) eq 'ARRAY') {
479: foreach my $part (@{$partlist}) {
480: my @types = $res->responseType($part);
481: my @ids = $res->responseIds($part);
482: for (my $i=0; $i < scalar(@ids); $i++) {
483: if ($types[$i] eq 'essay') {
484: my $partid = $part.'_'.$ids[$i];
485: if (&Apache::lonnet::EXT("resource.$partid.uploadedfiletypes") ne '') {
486: $needs_upload = 1;
487: last;
488: }
1.493 raeburn 489: }
490: }
491: }
1.495 raeburn 492: }
493: }
1.493 raeburn 494: }
495: }
496: }
497: }
1.495 raeburn 498: if ($needs_upload) {
1.512.2.17 raeburn 499: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js().
500: '<script type="text/javascript" '.
501: 'src="/res/adm/includes/file_upload.js"></script>';
1.495 raeburn 502: }
1.478 raeburn 503: }
1.425 raeburn 504:
1.344 albertel 505: my %body_args;
506: if (defined($found{'html'})) {
507: $body_args{'skip_phases'}{'head'}=1;
508: } else {
1.343 albertel 509:
1.345 albertel 510: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 511:
1.379 albertel 512: $extra_head .= &Apache::londefdef::generate_css_links();
513:
1.384 albertel 514: if ($env{'request.state'} eq 'construct') {
1.343 albertel 515: $extra_head.=&Apache::edit::js_change_detection().
516: "<script type=\"text/javascript\">\n".
517: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
518: &Apache::loncommon::browser_and_searcher_javascript().
519: "\n</script>\n";
1.512.2.9 raeburn 520: if ($target eq 'edit') {
521: $extra_head .= &Apache::edit::js_update_linknum();
522: }
1.343 albertel 523: }
1.159 albertel 524: }
1.343 albertel 525:
1.446 bisitz 526: my $pageheader = '';
1.344 albertel 527: if (defined($found{'body'})) {
528: $body_args{'skip_phases'}{'body'}=1;
529: } elsif (!defined($found{'body'})
530: && $env{'request.state'} eq 'construct') {
1.343 albertel 531: if ($target eq 'web' || $target eq 'edit') {
1.512.2.3 raeburn 532: # Breadcrumbs for Authoring Space
1.450 bisitz 533: &Apache::lonhtmlcommon::clear_breadcrumbs();
534: &Apache::lonhtmlcommon::add_breadcrumb({
1.512.2.3 raeburn 535: 'text' => 'Authoring Space',
1.497 raeburn 536: 'href' => &Apache::loncommon::authorspace($env{'request.uri'}),
1.450 bisitz 537: });
1.460 droeschl 538: # breadcrumbs (and tools) will be created
539: # in start_page->bodytag->innerregister
540:
1.450 bisitz 541: # FIXME Where are we?
542: # &Apache::lonhtmlcommon::add_breadcrumb({
543: # 'text' => 'Problem Editing', # 'Problem Testing'
544: # 'href' => '',
545: # });
1.460 droeschl 546: $pageheader =&Apache::loncommon::head_subbox(
1.446 bisitz 547: &Apache::loncommon::CSTR_pageheader());
1.297 albertel 548: }
1.272 albertel 549: } elsif (!defined($found{'body'})) {
1.343 albertel 550: my %add_entries;
1.159 albertel 551: my $background=&Apache::lonxml::get_param('background',$parstack,
552: $safeeval);
1.343 albertel 553: if ($background ne '' ) {
554: $add_entries{'background'} = $background;
555: }
1.344 albertel 556:
1.290 albertel 557: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
558: $safeeval);
1.446 bisitz 559: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
1.344 albertel 560:
1.446 bisitz 561: $body_args{'bgcolor'} = $bgcolor;
562: # $body_args{'no_title'} = 1;
563: $body_args{'force_register'} = 1;
564: $body_args{'add_entries'} = \%add_entries;
1.466 droeschl 565: if ( $env{'request.state'} eq 'construct') {
1.446 bisitz 566: $body_args{'only_body'} = 1;
1.512.2.7 raeburn 567: } elsif ($target eq 'web') {
568: $body_args{'print_suppress'} = 1;
1.446 bisitz 569: }
1.344 albertel 570: }
1.365 albertel 571: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 572: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
573: \%body_args);
1.446 bisitz 574: $page_start .= $pageheader;
1.462 raeburn 575: if (!defined($found{'body'})
576: && $env{'request.state'} ne 'construct'
577: && ($target eq 'web' || $target eq 'webgrade')) {
578:
579: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
580: if ($symb eq '' && !$publicuser) {
581: $page_start .= '<p class="LC_info">'
582: .&mt('Browsing resource, all submissions are temporary.')
583: .'</p>';
1.457 bisitz 584: }
1.344 albertel 585: }
586:
1.409 albertel 587: if (!defined($found{'body'}) && $env{'request.state'} ne 'construct') {
1.343 albertel 588: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 589: }
590: my $form_tag_start;
591: if (!defined($found{'form'})) {
1.337 albertel 592: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.465 raeburn 593: my $uri = &Apache::loncommon::inhibit_menu_check(
1.455 droeschl 594: &Apache::lonenc::check_encrypt($env{'request.uri'}));
1.464 raeburn 595: $uri = &HTML::Entities::encode($uri,'<>&"');
1.327 albertel 596: $form_tag_start.=$uri.'" ';
597: if ($target eq 'edit') {
598: $form_tag_start.=&Apache::edit::form_change_detection();
599: }
1.493 raeburn 600: my ($symb,$courseid,$udom,$uname)=&Apache::lonnet::whichuser();
601: my ($path,$multiresp) =
602: &Apache::loncommon::get_turnedin_filepath($symb,$uname,$udom);
1.495 raeburn 603: if (($is_task) || ($needs_upload)) {
604: $form_tag_start .= ' onsubmit="return file_submission_check(this,'."'$path','$multiresp'".');"';
1.478 raeburn 605: }
1.368 albertel 606: $form_tag_start.='>'."\n";
1.355 albertel 607:
608: if ($symb =~ /\S/) {
609: $symb=
610: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
611: $form_tag_start.=
1.368 albertel 612: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 613: }
1.159 albertel 614: }
1.512.2.9 raeburn 615: return ($page_start,$form_tag_start,$partlist);
1.105 albertel 616: }
617:
1.141 matthew 618: #use Time::HiRes();
1.105 albertel 619: sub get_resource_name {
1.159 albertel 620: my ($parstack,$safeeval)=@_;
1.388 foxr 621: my $name;
1.204 albertel 622: if (defined($Apache::lonhomework::name)) {
1.388 foxr 623: $name = $Apache::lonhomework::name;
624: } else {
625: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 626: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 627: if ($name eq '') {
628: $name=&Apache::lonnet::EXT('resource.title');
629: if ($name eq 'con_lost') { $name = ''; }
630: }
631: if ($name!~/\S+/) {
632: $name=$env{'request.uri'};
633: $name=~s-.*/([^/]+)$-$1-;
634: }
635: # The name has had html tags escaped:
636:
637: $name=~s/</</gs;
638: $name=~s/>/>/gs;
639:
640: $Apache::lonhomework::name=$name;
1.204 albertel 641: }
1.159 albertel 642: return $name;
1.105 albertel 643: }
644:
645: sub setup_rndseed {
1.512.2.9 raeburn 646: my ($safeeval,$target,$probpartlist)=@_;
1.367 albertel 647: my ($symb)=&Apache::lonnet::whichuser();
1.512.2.19 raeburn 648: my ($questiontype,$set_safespace,$rndseed,$numtries,$reqtries);
1.479 raeburn 649: if ($target eq 'analyze') {
650: $questiontype = $env{'form.grade_questiontype'};
651: }
652: unless (defined($questiontype)) {
653: $questiontype = $Apache::lonhomework::type;
654: }
1.512.2.19 raeburn 655: if ($Apache::lonhomework::type eq 'randomizetry') {
656: my $partfortries = $Apache::inputtags::part;
1.512.2.22 raeburn 657: #
658: # Where question type is "randomizetry" for a problem containing
659: # a single part (and unless type is explicitly set to not be
660: # "randomizetry" for that part), the number of tries used to
661: # determine randomization will be for that part, and randomization
662: # from calls to &random() in a perl script block before the part tag,
663: # will change based on the number of tries, and value of the
664: # "randomizeontries" parameter in effect for the single part.
665: #
1.512.2.19 raeburn 666: if (ref($probpartlist) eq 'ARRAY') {
1.512.2.22 raeburn 667: if ((@{$probpartlist} == 1) && ($probpartlist->[0] ne $partfortries)) {
668: if (&Apache::lonnet::EXT('resource.'.$probpartlist->[0].'.type') eq 'randomizetry') {
1.512.2.21 raeburn 669: $partfortries = $probpartlist->[0];
670: } else {
671: $partfortries = '';
672: }
1.512.2.19 raeburn 673: }
674: }
1.512.2.21 raeburn 675: if ($partfortries ne '') {
676: $numtries = $Apache::lonhomework::history{"resource.$partfortries.tries"};
677: $reqtries = &Apache::lonnet::EXT("resource.$partfortries.randomizeontries");
678: }
1.512.2.19 raeburn 679: }
1.512.2.24.2. (raeburn 680:): if (($env{'request.state'} eq "construct")
1.512.2.14 raeburn 681: || ($symb eq '')
682: || ($Apache::lonhomework::type eq 'practice')
1.512.2.24.2. (raeburn 683:): || ($Apache::lonhomework::history{'resource.CODE'})
1.512.2.14 raeburn 684: || (($env{'form.code_for_randomlist'}) && ($target eq 'analyze'))) {
1.316 www 685: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 686: ['rndseed']);
1.284 albertel 687: $rndseed=$env{'form.rndseed'};
1.159 albertel 688: if (!$rndseed) {
1.162 albertel 689: $rndseed=$Apache::lonhomework::history{'rndseed'};
690: if (!$rndseed) {
691: $rndseed=time;
692: }
1.512.2.14 raeburn 693: unless ($env{'form.code_for_randomlist'}) {
694: $env{'form.rndseed'}=$rndseed;
695: }
1.162 albertel 696: }
1.512.2.20 raeburn 697: if ((($env{'request.state'} eq "construct") || ($symb eq '')) &&
1.479 raeburn 698: ($Apache::lonhomework::type eq 'randomizetry')) {
1.512.2.19 raeburn 699: if ($numtries) {
700: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
701: my $inc = int($numtries/$reqtries);
702: $rndseed += $inc;
703: } else {
704: $rndseed += $numtries;
705: }
1.479 raeburn 706: }
1.480 raeburn 707: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.479 raeburn 708: }
1.374 albertel 709: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
710: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 711: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 712: srand(time);
713: $rndseed=int(rand(2100000000));
1.284 albertel 714: $env{'form.rndseed'}=$rndseed;
715: delete($env{'form.resetdata'});
716: delete($env{'form.newrandomization'});
1.159 albertel 717: }
1.488 www 718: $rndseed=~s/\,/\:/g;
719: $rndseed=~s/[^\w\d\:\-]//g;
1.489 www 720: if (defined($rndseed)) {
721: my ($c1,$c2)=split(/\:/,$rndseed);
722: unless ($c2) { $c2=0; }
723: unless (($c1==int($c1)) && ($c2==int($c2))) {
724: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
725: }
1.187 albertel 726: }
1.512.2.14 raeburn 727: if (($env{'form.code_for_randomlist'}) && ($target eq 'analyze')) {
728: $env{'form.CODE'} = $env{'form.code_for_randomlist'};
729: $rndseed=&Apache::lonnet::rndseed();
730: undef($env{'form.CODE'});
731: } elsif ($Apache::lonhomework::history{'resource.CODE'}) {
1.247 albertel 732: $rndseed=&Apache::lonnet::rndseed();
733: }
1.479 raeburn 734: $set_safespace = 1;
735: } elsif ($questiontype eq 'randomizetry') {
736: if ($target eq 'analyze') {
737: if (defined($env{'form.grade_rndseed'})) {
738: $rndseed = $env{'form.grade_rndseed'};
739: }
740: }
741: unless (($target eq 'analyze') && (defined($rndseed))) {
742: $rndseed=&Apache::lonnet::rndseed();
1.512.2.19 raeburn 743: my $curr_try = $numtries;
1.479 raeburn 744: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
745: $curr_try ++;
746: }
747: if ($rndseed =~/^(\d+)[,:](\d+)$/) {
748: $rndseed = $1;
749: }
750: if ($curr_try) {
751: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
752: my $inc = int(($curr_try-1)/$reqtries);
753: $rndseed += $inc;
754: } else {
755: $rndseed += $curr_try;
756: }
757: }
758: }
759: $set_safespace = 1;
1.512.2.9 raeburn 760: if ($target eq 'grade') {
761: $Apache::lonhomework::rawrndseed = $rndseed;
762: }
1.479 raeburn 763: }
764: if ($set_safespace) {
765: if ($safeeval) {
766: &Apache::lonxml::debug("Setting rndseed to $rndseed");
767: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
768: }
769: }
770: unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
771: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159 albertel 772: }
773: return $rndseed;
1.105 albertel 774: }
775:
1.268 albertel 776: sub remember_problem_state {
777: return '
1.284 albertel 778: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
779: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
780: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 781: }
782:
1.487 www 783: sub problem_edit_action_button {
784: my ($name,$action,$accesskey,$text,$flag)=@_;
785: my $actionscript="setmode(this.form,'$action')";
786: return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
787: ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
788: }
789:
1.423 www 790: sub problem_edit_buttons {
1.487 www 791: my ($mode)=@_;
1.512.2.11 raeburn 792: # Buttons that save
793: my $result = '<div style="float:right">';
794: if ($mode eq 'editxml') {
795: $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
796: $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
797: } else {
798: $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
799: $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
800: }
801: $result.="\n</div>\n";
1.487 www 802: # Buttons that do not save
1.512.2.11 raeburn 803: $result .= '<div>'.
1.487 www 804: &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
805: if ($mode eq 'editxml') {
806: $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
807: $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
1.512.2.11 raeburn 808: if ($env{'environment.nocodemirror'}) {
809: $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
810: }
1.487 www 811: } else {
812: $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
813: $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
814: }
815: $result.="\n</div>";
816: return $result;
1.423 www 817: }
818:
819: sub problem_edit_header {
1.512.2.11 raeburn 820: my ($mode)=@_;
821: my $return = '<input type="hidden" name="submitted" value="edit" />'.
1.487 www 822: &remember_problem_state('edit').'
1.512.2.11 raeburn 823: <div class="LC_edit_problem_header">
824: <div class="LC_edit_problem_header_title">
825: '.&mt('Problem Editing').$mode.&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
826: </div><div class="LC_edit_actionbar" id="actionbar">'.
827: '<input type="hidden" name="problemmode" value="saveedit" />'.
828: &problem_edit_buttons();
829:
830: $return .= '</div></div>' . &Apache::lonxml::message_location();
831: $return .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined.css" />
832: <script type="text/javascript" src="/adm/codemirror/codemirror-compressed-colorful.js"></script>';
833:
834: $return .= '<script type="text/javascript" src="/adm/jQuery/addons/jquery-scrolltofixed.js"></script>
835: <script type="text/javascript">
836: // unless internet explorer
837: if (!(window.navigator.appName == "Microsoft Internet Explorer" && (document.documentMode || document.compatMode))){
838: $(document).ready(
839: function() {
840: $(\'.LC_edit_actionbar\').scrollToFixed(
841: {
842: fixed: function(){
843: //$(this).find(\'.LC_edit_actionbar\').css(\'height\', \'31px\');
844: $(this).find(\'.LC_edit_actionbar\');
845: }
846: }
847: );
848: }
849: );
850: }
851: </script>
852: <table id="LC_edit_problem_colorful" border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
853: return $return;
1.105 albertel 854: }
855:
1.512.2.11 raeburn 856:
1.105 albertel 857: sub problem_edit_footer {
1.512.2.11 raeburn 858: my $resource = $env{'request.ambiguous'};
1.412 albertel 859: return '</td></tr></table><br />
860: <div class="LC_edit_problem_footer">
1.453 bisitz 861: <hr />'.
1.423 www 862: &problem_edit_buttons().'
1.459 bisitz 863: <hr style="clear:both;" />
1.512.2.11 raeburn 864: <script type="text/javascript">
865: restoreState("'.$resource.'");
866: restoreScrollPosition("'.$resource.'");
867: </script>
1.412 albertel 868: </div>
869: '.
1.342 albertel 870: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 871: }
872:
1.235 albertel 873: sub option {
874: my ($value,$name) = @_;
875: my $result ="<option value='".$value."' ";
1.284 albertel 876: if ($env{'form.'.$name} eq $value) {
1.235 albertel 877: $result.=" selected='on' ";
878: }
879: $result.='>';
880: return $result;
881: }
882:
1.105 albertel 883: sub problem_web_to_edit_header {
1.159 albertel 884: my ($rndseed)=@_;
1.406 albertel 885: my $result .= '<div class="LC_edit_problem_header">';
886:
887: if (!$Apache::lonhomework::parsing_a_task) {
888: $result .=
889: '<div class="LC_edit_problem_header_title">'.
890: &mt('Problem Testing').
891: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
892: '</div>';
893: } else {
894: $result .=
895: '<div class="LC_edit_problem_header_title">'.
896: &mt('Task Testing').
897: '</div>';
898: }
899:
1.315 albertel 900: my $show_all_foils_text =
901: ($Apache::lonhomework::parsing_a_task) ?
1.452 bisitz 902: &mt('Show All Instances')
903: : &mt('Show All Foils');
1.315 albertel 904:
1.452 bisitz 905: my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
906: .'<input type="checkbox" name="showallfoils"';
1.440 bisitz 907: if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452 bisitz 908: $show_all.= ' /> '.$show_all_foils_text
909: .'</label></span>';
1.406 albertel 910:
911:
1.384 albertel 912:
1.406 albertel 913: $result .= '<div class="LC_edit_problem_header_status_row">';
1.313 albertel 914: if (!$Apache::lonhomework::parsing_a_task) {
915: $result.="
1.406 albertel 916: <div class='LC_edit_problem_header_row1'>
917: <span class=\"LC_nobreak\">
1.405 albertel 918: ".&mt("Problem Status:")."
1.235 albertel 919: <select name='problemstate'>
1.270 albertel 920: <option value=''></option>
1.235 albertel 921: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
922: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
923: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
924: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
925: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
926: </select>
1.406 albertel 927: </span>
928: <span class=\"LC_nobreak\">
1.405 albertel 929: ".&mt("Problem Type:")."
1.235 albertel 930: <select name='problemtype'>
1.270 albertel 931: <option value=''></option>
1.512.2.1 raeburn 932: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
1.428 raeburn 933: ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242 albertel 934: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465 raeburn 935: ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
936: ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
937: ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428 raeburn 938: ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479 raeburn 939: ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235 albertel 940: </select>
1.406 albertel 941: </span>
942: $show_all
943: </div>
944: <div class='LC_edit_problem_header_row2'>
945: <span class=\"LC_nobreak\">
1.405 albertel 946: ".&mt("Feedback Mode:")."
1.235 albertel 947: <select name='problemstatus'>
948: <option value=''></option>
1.242 albertel 949: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.512.2.6 raeburn 950: ".&option('no', 'problemstatus').&mt("Don't Show Incorrect/Correct Feedback")."</option>
1.405 albertel 951: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 952: </select>
1.406 albertel 953: </span>
954: ";
955:
1.376 albertel 956: } elsif ($Apache::lonhomework::parsing_a_task) {
957: $result.="
1.406 albertel 958: <div class='LC_edit_problem_header_row1'>
959: <span class=\"LC_nobreak\">
1.405 albertel 960: ".&mt("Problem Status:")."
1.376 albertel 961: <select name='problemstate'>
962: <option value=''></option>
963: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
964: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
965: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
966: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
967: </select>
1.406 albertel 968: </span>
969: $show_all
970: ";
971: }
972: $result.='
973: <span class="LC_nobreak">
974: '.&mt('Apply style file: ').'
975: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
976: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
977: </span>
1.422 www 978: </div>
979: <div class="LC_edit_problem_header_row1">'.
980: &Apache::lonxml::renderingoptions().'
1.406 albertel 981: </div>
982: <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
983: <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
984: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
985: </div>
1.453 bisitz 986: <hr />
1.406 albertel 987: <div class="LC_edit_problem_header_randomize_row">
988: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
989: <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488 www 990: <input type="text" name="rndseed" size="24" value="'.
1.406 albertel 991: $rndseed.'"
992: onchange="javascript:document.lonhomework.changerandseed.click()" />';
993:
994: if (!$Apache::lonhomework::parsing_a_task) {
995: my $numtoanalyze=$env{'form.numtoanalyze'};
996: if (!$numtoanalyze) { $numtoanalyze=20; }
1.408 albertel 997: $result .= '<span class="LC_nobreak">'.
998: &mt('[_1] for [_2] versions.',
1.416 raeburn 999: '<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419 bisitz 1000: 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
1001: ,'<input type="text" name="numtoanalyze" value="'.
1.408 albertel 1002: $numtoanalyze.'" size="5" />').
1003: &Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
1004: '</span>';
1005:
1.313 albertel 1006: }
1.406 albertel 1007:
1008: $result.='
1009: </div>
1.453 bisitz 1010: <hr />
1.447 bisitz 1011: <div>';
1.416 raeburn 1012: $result.='<input type="hidden" name="problemmode" value="view" />';
1013: $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
1014: 'onclick="javascript:setmode(this.form,'."'edit'".')" />';
1015: $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
1016: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408 albertel 1017: $result.='
1018: </div>
1.453 bisitz 1019: <hr />
1.409 albertel 1020: '.&Apache::lonxml::message_location().'
1.406 albertel 1021: </div>';
1.159 albertel 1022: return $result;
1.48 albertel 1023: }
1024:
1.65 albertel 1025: sub initialize_storage {
1.357 albertel 1026: my ($given_symb) = @_;
1.353 albertel 1027: undef(%Apache::lonhomework::results);
1028: undef(%Apache::lonhomework::history);
1.357 albertel 1029: my ($symb,$courseid,$domain,$name) =
1.367 albertel 1030: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 1031:
1032: # anonymous users (CODEd exams) have no data
1033: if ($name eq 'anonymous'
1034: && !defined($domain)) {
1035: return;
1036: }
1037:
1.333 albertel 1038: if ($env{'request.state'} eq 'construct'
1039: || $symb eq ''
1040: || $Apache::lonhomework::type eq 'practice') {
1041:
1042: my $namespace = $symb || $env{'request.uri'};
1043: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 1044: ($env{'form.resetdata'} eq &mt('New Problem Variation')
1045: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 1046: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1047: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
1048: &Apache::lonxml::debug("Attempt reset");
1049: }
1.159 albertel 1050: %Apache::lonhomework::history=
1.333 albertel 1051: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.512.2.9 raeburn 1052: my ($temp)=keys(%Apache::lonhomework::history);
1.159 albertel 1053: &Apache::lonxml::debug("Return message of $temp");
1054: } else {
1055: %Apache::lonhomework::history=
1056: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1057: }
1.353 albertel 1058:
1.159 albertel 1059: #ignore error conditions
1.512.2.9 raeburn 1060: my ($temp)=keys(%Apache::lonhomework::history);
1.159 albertel 1061: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 1062: }
1063:
1.435 jms 1064: =pod
1065:
1066: =item finalize_storage()
1067:
1.512.2.9 raeburn 1068: Stores away the result hash to a student's environment;
1069: checks form.grade_ for specific values, otherwise stores
1070: to the running user's environment.
1071:
1072: &check_correctness_changes() is called in two circumstances
1073: in which the results hash is to be stored permanently, for
1074: grading triggered by a student's submission, where feedback on
1075: correctness is to be provided to the student.
1076:
1077: 1. Immediately prior to storing the results hash
1078:
1079: To handle the case where a student's submission (and award) were
1080: stored after history was retrieved in &initialize_storage(), e.g.,
1081: if a student submitted answers in quick succession (e.g., from
1082: multiple tabs). &Apache::inputtags::hidealldata() is called for
1083: any parts with out-of-order storage (i.e., correct then incorrect,
1084: where awarded >= 1 when correct).
1085:
1086: 2. Immediately after storing the results hash
1087:
1088: To handle the case where lond on the student's homeserver returns
1089: delay:N -- where N is the number of transactions between the last
1090: retrieved in &initialize_storage() and the last stored immediately
1091: before permanent storage of the current transaction via
1092: lond::store_handler(). &Apache::grades::makehidden() is called
1093: for any parts with out-of-order storage (i.e., correct then incorrect,
1094: where awarded >= 1 when correct).
1095:
1.512.2.24.2. (raeburn 1096:): Will call &store_aggregates() to increment totals for attempts,
1.512.2.9 raeburn 1097: students, and corrects, if running user has student role.
1.512.2.24.2. (raeburn 1098:):
1.435 jms 1099: =cut
1100:
1101:
1.65 albertel 1102: sub finalize_storage {
1.357 albertel 1103: my ($given_symb) = @_;
1.159 albertel 1104: my $result;
1.289 albertel 1105: if (%Apache::lonhomework::results) {
1.323 albertel 1106: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
1107: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 1108: my ($symb,$courseid,$domain,$name) =
1.367 albertel 1109: &Apache::lonnet::whichuser($given_symb);
1.512.2.24.2. (raeburn 1110:): my ($passback,$pbscope,$pbmap,$pbsymb,$pbtype,$crsdef,$ltinum,
1111:): $ltiref,$total,$possible,$dopassback);
1.333 albertel 1112: if ($env{'request.state'} eq 'construct'
1113: || $symb eq ''
1114: || $Apache::lonhomework::type eq 'practice') {
1115: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 1116: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 1117: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 1118: $namespace,'',$domain,$name);
1.159 albertel 1119: &Apache::lonxml::debug('Construct Store return message:'.$result);
1120: } else {
1.512.2.24.2. (raeburn 1121:): my ($laststore,$checkedparts,@parts,%postcorrect,%record);
1.512.2.9 raeburn 1122: if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
1123: (!$Apache::lonhomework::scantronmode) && (!defined($env{'form.grade_symb'})) &&
1124: (!defined($env{'form.grade_courseid'}))) {
1.512.2.24.2. (raeburn 1125:): if (($env{'request.lti.login'}) || ($env{'request.deeplink.login'})) {
1126:): my ($map)=&Apache::lonnet::decode_symb($symb);
1127:): $map = &Apache::lonnet::clutter($map);
1128:): if ($env{'request.lti.login'}) {
1129:): ($passback,$pbscope,$pbmap,$pbsymb,$ltinum,$ltiref) =
1130:): &needs_lti_passback($courseid,$symb,$map);
1131:): } elsif ($env{'request.deeplink.login'}) {
1132:): ($passback,$pbscope,$pbmap,$pbsymb,$crsdef,$ltinum,$ltiref) =
1133:): &needs_linkprot_passback($courseid,$symb,$map);
1134:): }
1135:): }
1.512.2.9 raeburn 1136: if ($Apache::lonhomework::history{'version'}) {
1137: $laststore = $Apache::lonhomework::history{'version'}.'='.
1138: $Apache::lonhomework::history{'timestamp'};
1139: } else {
1140: $laststore = '0=0';
1141: }
1.512.2.24.2. (raeburn 1142:): %record = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1.512.2.9 raeburn 1143: if ($record{'version'}) {
1144: my ($newversion,$oldversion,$oldtimestamp);
1145: if ($Apache::lonhomework::history{'version'}) {
1146: $oldversion = $Apache::lonhomework::history{'version'};
1147: $oldtimestamp = $Apache::lonhomework::history{'timestamp'};
1148: } else {
1149: $oldversion = 0;
1150: $oldtimestamp = 0;
1151: }
1152: if ($record{'version'} > $oldversion) {
1153: if ($record{'timestamp'} >= $oldtimestamp) {
1154: $laststore = $record{'version'}.'='.$record{'timestamp'};
1155: $newversion = $record{'version'} + 1;
1156: $checkedparts = 1;
1157: foreach my $key (keys(%Apache::lonhomework::results)) {
1158: if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1159: my $part = $1;
1160: if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
1161: push(@parts,$part);
1162: }
1163: }
1164: }
1165: if (@parts) {
1166: my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
1167: \%record,\@parts,$newversion,
1168: $oldversion);
1169: if (@parts_to_hide) {
1170: foreach my $part (@parts_to_hide) {
1171: $postcorrect{$part} = 1;
1172: &Apache::inputtags::hidealldata($part);
1173: }
1174: }
1175: }
1176: }
1177: }
1178: }
1179: }
1.159 albertel 1180: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
1.512.2.9 raeburn 1181: $symb,$courseid,$domain,$name,$laststore);
1182: if ($result =~ /^delay\:(\d+)$/) {
1183: my $numtrans = $1;
1184: my ($oldversion) = split(/=/,$laststore);
1185: if ($numtrans) {
1186: my $newversion = $oldversion + 1 + $numtrans;
1187: my @possparts;
1188: if ($checkedparts) {
1189: foreach my $part (@parts) {
1190: unless ($postcorrect{$part}) {
1191: push(@possparts,$part);
1192: }
1193: }
1194: } else {
1195: foreach my $key (keys(%Apache::lonhomework::results)) {
1196: if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1197: my $part = $1;
1198: unless ($postcorrect{$part}) {
1199: if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
1200: push(@possparts,$part);
1201: }
1202: }
1203: }
1204: }
1205: }
1206: if (@possparts) {
1207: my %newrecord = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1208: my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
1209: \%newrecord,\@possparts,$newversion,
1210: $oldversion);
1211: if (@parts_to_hide) {
1212: my $partslist = join(',',@parts_to_hide);
1213: &Apache::grades::makehidden($newversion,$partslist,\%newrecord,$symb,$domain,$name,1);
1214: }
1215: }
1216: }
1217: }
1.512.2.24.2. (raeburn 1218:): if ($passback) {
1219:): foreach my $key (keys(%Apache::lonhomework::results)) {
1220:): if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1221:): my $part = $1;
1222:): if ((($Apache::lonhomework::results{$key} =~ /^correct_/) ||
1223:): ($Apache::lonhomework::results{$key} eq 'incorrect_attempted')) &&
1224:): ($Apache::lonhomework::results{"resource.$part.tries"})) {
1225:): $dopassback = 1;
1226:): last;
1227:): }
1228:): }
1229:): }
1230:): }
1231:): if (($dopassback) && ($pbscope eq 'resource') && ($pbsymb eq $symb)) {
1232:): $total = 0;
1233:): $possible = 0;
1234:): my $navmap = Apache::lonnavmaps::navmap->new();
1235:): if (ref($navmap)) {
1236:): my $res = $navmap->getBySymb($symb);
1237:): if (ref($res)) {
1238:): my $partlist = $res->parts();
1239:): if (ref($partlist) eq 'ARRAY') {
1240:): foreach my $part (@{$partlist}) {
1241:): unless (exists($Apache::lonhomework::results{"resource.$part.solved"})) {
1242:): next if ($Apache::lonhomework::record{"resource.$part.solved"} =~/^excused/);
1243:): my $weight = &Apache::lonnet::EXT("resource.$part.weight",$symb);
1244:): $possible += $weight;
1245:): if (($record{'version'}) && (exists($record{"resource.$part.awarded"}))) {
1246:): my $awarded = $record{"resource.$part.awarded"};
1247:): if ($awarded) {
1248:): $total += $weight * $awarded;
1249:): }
1250:): }
1251:): }
1252:): }
1253:): }
1254:): }
1255:): }
1256:): foreach my $key (keys(%Apache::lonhomework::results)) {
1257:): if ($key =~ /^resource\.([^\.]+)\.awarded$/) {
1258:): my $part = $1;
1259:): my $weight = &Apache::lonnet::EXT("resource.$part.weight",$symb);
1260:): $possible += $weight;
1261:): my $awarded = $Apache::lonhomework::results{$key};
1262:): if ($awarded) {
1263:): $total += $weight * $awarded;
1264:): }
1265:): }
1266:): }
1267:): }
1.159 albertel 1268: &Apache::lonxml::debug('Store return message:'.$result);
1.470 raeburn 1269: &store_aggregates($symb,$courseid);
1.512.2.24.2. (raeburn 1270:): if ($dopassback) {
1271:): my $scoreformat = 'decimal';
1272:): if (($env{'request.lti.login'}) || ($env{'request.deeplink.login'})) {
1273:): if (ref($ltiref) eq 'HASH') {
1274:): if ($ltiref->{'scoreformat'} =~ /^(decimal|ratio|percentage)$/) {
1275:): $scoreformat = $1;
1276:): }
1277:): }
1278:): }
1279:): my ($pbid,$pburl,$pbtype);
1280:): if ($env{'request.lti.login'}) {
1281:): $pbid = $env{'request.lti.passbackid'};
1282:): $pburl = $env{'request.lti.passbackurl'};
1283:): $pbtype = 'lti';
1284:): } elsif ($env{'request.deeplink.login'}) {
1285:): $pbid = $env{'request.linkprotpbid'};
1286:): $pburl = $env{'request.linkprotpburl'};
1287:): $pbtype = 'linkprot';
1288:): }
1289:): my $ltigrade = {
1290:): 'ltinum' => $ltinum,
1291:): 'lti' => $ltiref,
1292:): 'crsdef' => $crsdef,
1293:): 'cid' => $courseid,
1294:): 'uname' => $env{'user.name'},
1295:): 'udom' => $env{'user.domain'},
1296:): 'pbid' => $pbid,
1297:): 'pburl' => $pburl,
1298:): 'pbtype' => $pbtype,
1299:): 'scope' => $pbscope,
1300:): 'pbmap' => $pbmap,
1301:): 'pbsymb' => $pbsymb,
1302:): 'format' => $scoreformat,
1303:): };
1304:): if ($pbscope eq 'resource') {
1305:): $ltigrade->{'total'} = $total;
1306:): $ltigrade->{'possible'} = $possible;
1307:): }
1308:): push(@Apache::lonhomework::ltipassback,$ltigrade);
1309:): }
1.159 albertel 1310: }
1.323 albertel 1311: } else {
1312: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 1313: }
1.159 albertel 1314: return $result;
1.65 albertel 1315: }
1316:
1.512.2.24.2. (raeburn 1317:): sub needs_lti_passback {
1318:): my ($courseid,$symb,$map) = @_;
1319:): if (($env{'request.lti.passbackid'}) && ($env{'request.lti.passbackurl'})) {
1320:): if ($courseid =~ /^($LONCAPA::match_domain)_($LONCAPA::match_courseid)$/) {
1321:): my ($cdom,$cnum) = ($1,$2);
1322:): my %lti = &Apache::lonnet::get_domain_lti($cdom,'provider');
1323:): if (ref($lti{$env{'request.lti.login'}}) eq 'HASH') {
1324:): if ($lti{$env{'request.lti.login'}}{'passback'}) {
1325:): my $itemnum = $env{'request.lti.login'};
1326:): my ($ltiscope,$ltiuri,$ltisymb) =
1327:): &LONCAPA::ltiutils::lti_provider_scope($env{'request.lti.uri'},
1328:): $cdom,$cnum,1);
1329:): my ($passback,$ltimap);
1330:): if ($ltiscope eq 'resource') {
1331:): if ($ltisymb eq $symb) {
1332:): $passback = 1;
1333:): }
1334:): } elsif ($ltiscope eq 'map') {
1335:): if ($ltiuri eq $map) {
1336:): $passback = 1;
1337:): $ltimap = $map;
1338:): }
1339:): } elsif ($ltiscope eq 'course') {
1340:): if (($env{'request.lti.uri'} eq "/$cdom/$cnum") || ($env{'request.lti.uri'} eq '')) {
1341:): $passback = 1;
1342:): }
1343:): }
1344:): return ($passback,$ltiscope,$ltimap,$ltisymb,$itemnum,$lti{$itemnum});
1345:): }
1346:): }
1347:): }
1348:): }
1349:): return;
1350:): }
1351:):
1352:): sub needs_linkprot_passback {
1353:): my ($courseid,$symb,$map) = @_;
1354:): if (($env{'request.linkprotpbid'}) && ($env{'request.linkprotpburl'})) {
1355:): if ($courseid =~ /^($LONCAPA::match_domain)_($LONCAPA::match_courseid)$/) {
1356:): my ($cdom,$cnum) = ($1,$2);
1357:): my ($deeplink_symb,$deeplink_map,$deeplink,$passback);
1358:): $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
1359:): if ($deeplink_symb) {
1360:): if ($deeplink_symb =~ /\.(page|sequence)$/) {
1361:): $deeplink_map = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($deeplink_symb))[2]);
1362:): my $navmap = Apache::lonnavmaps::navmap->new();
1363:): if (ref($navmap)) {
1364:): $deeplink = $navmap->get_mapparam(undef,$deeplink_map,'0.deeplink');
1365:): }
1366:): } else {
1367:): $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$deeplink_symb);
1368:): $deeplink_map = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($deeplink_symb))[0]);
1369:): }
1370:): if (($deeplink ne '') && ($env{'request.linkprot'} ne '')) {
1371:): my ($itemid,$tinyurl) = split(/:/,$env{'request.linkprot'});
1372:): if ($itemid =~ /^(\d+)(c|d)$/) {
1373:): my ($itemnum,$itemtype) = ($1,$2);
1374:): my ($crsdef,$lti_in_use);
1375:): if ($itemtype eq 'c') {
1376:): $crsdef = 1;
1377:): my %crslti = &Apache::lonnet::get_course_lti($cnum,$cdom,'provider');
1378:): $lti_in_use = $crslti{$itemnum};
1379:): } else {
1380:): my %domlti = &Apache::lonnet::get_domain_lti($cdom,'linkprot');
1381:): $lti_in_use = $domlti{$itemnum};
1382:): }
1383:): my ($state,$others,$listed,$scope,$protect,$display,$target,$exit) = split(/,/,$deeplink);
1384:): my $passback;
1385:): if ($scope eq 'resource') {
1386:): if ($deeplink_symb eq $symb) {
1387:): $passback = 1;
1388:): }
1389:): } elsif ($scope eq 'map') {
1390:): if (&Apache::lonnet::clutter($deeplink_map) eq $map) {
1391:): $passback = 1;
1392:): }
1393:): } elsif ($scope eq 'recurse') {
1394:): #FIXME check if $deeplink_map contains $map
1395:): $passback = 1;
1396:): }
1397:): return ($passback,$scope,$deeplink_map,$deeplink_symb,$crsdef,$itemnum,$lti_in_use);
1398:): }
1399:): }
1400:): }
1401:): }
1402:): }
1403:): }
1404:):
1.435 jms 1405: =pod
1406:
1.512.2.9 raeburn 1407: =item check_correctness_changes()
1408:
1409: For all parts for which current results contain a solved status
1410: of "incorrect_attempted", check if there was a transaction in which
1411: solved was set to "correct_by_student" in the time since the last
1412: transaction (retrieved when &initialize_storage() was called i.e.,
1413: when &start_problem() was called), unless:
1414: (a) questiontype parameter is set to survey or anonymous survey (+/- credit)
1415: (b) problemstatus is set to no or no_feedback_ever
1416: If such a transaction exists, and did not occur after "reset status"
1417: by a user with grading privileges, then the current transaction is an
1418: example of an out-of-order transaction (i.e., incorrect occurring after
1419: correct). Accordingly, the current transaction should be hidden.
1420:
1421: =cut
1422:
1423:
1424: sub check_correctness_changes {
1425: my ($symb,$courseid,$domain,$name,$record,$parts,$newversion,$oldversion) = @_;
1426: my @parts_to_hide;
1427: unless ((ref($record) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
1428: return @parts_to_hide;
1429: }
1430: if (@{$parts}) {
1431: my $usec;
1432: if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
1433: ($env{'request.course.id'} eq $courseid)) {
1434: $usec = $env{'request.course.sec'};
1435: } else {
1436: $usec = &Apache::lonnet::getsection($domain,$name,$courseid);
1437: }
1438: foreach my $id (@{$parts}) {
1439: next if (($Apache::lonhomework::results{'resource.'.$id.'.type'} =~ /survey/) ||
1440: (&Apache::lonnet::EXT("resource.$id.problemstatus",$symb,
1441: $domain,$name,$usec,undef,$courseid) =~ /^no/));
1442: my $reset;
1443: for (my $i=$newversion-1; $i>=$oldversion; $i--) {
1444: if (($record->{$i.':resource.'.$id.'.regrader'}) &&
1445: ($record->{$i.':resource.'.$id.'.tries'} eq '') &&
1446: ($record->{$i.':resource.'.$id.'.award'} eq '')) {
1447: $reset = 1;
1448: } elsif (($record->{$i.":resource.$id.solved"} eq 'correct_by_student') &&
1449: ($record->{$i.":resource.$id.awarded"} >= 1)) {
1450: unless ($reset) {
1451: push(@parts_to_hide,$id);
1452: last;
1453: }
1454: }
1455: }
1456: }
1457: }
1458: return @parts_to_hide;
1459: }
1460:
1461: =pod
1462:
1.435 jms 1463: item store_aggregates()
1464:
1465: Sends hash of values to be incremented in nohist_resourcetracker.db
1466: for the course. Increments total number of attempts, unique students
1467: and corrects for each part for an instance of a problem, as appropriate.
1468:
1469: =cut
1470:
1.285 raeburn 1471: sub store_aggregates {
1472: my ($symb,$courseid) = @_;
1.479 raeburn 1473: my (%aggregate,%anoncounter,%randtrycounter);
1.286 albertel 1474: my @parts;
1.288 albertel 1475: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
1476: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 1477: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 1478: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 1479: push(@parts, $1);
1.285 raeburn 1480: }
1481: }
1.286 albertel 1482: foreach my $part (@parts) {
1.470 raeburn 1483: if ($env{'request.role'} =~/^st/) {
1484: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
1485: eq 'APPROX_ANS' ||
1486: $Apache::lonhomework::results{'resource.'.$part.'.award'}
1487: eq 'EXACT_ANS') {
1488: $aggregate{$symb."\0".$part."\0correct"} = 1;
1489: }
1490: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1491: $aggregate{$symb."\0".$part."\0users"} = 1;
1492: } else {
1493: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1494: if ($last_reset) {
1495: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1496: $aggregate{$symb."\0".$part."\0users"} = 1;
1497: }
1498: }
1499: }
1500: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 1501: }
1.470 raeburn 1502: if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') ||
1.479 raeburn 1503: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
1504: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
1505: if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
1506: $randtrycounter{$symb."\0".$part} = 1;
1507: } else {
1508: $anoncounter{$symb."\0".$part} = 1;
1509: }
1.470 raeburn 1510: my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
1511: if ($needsrelease) {
1512: my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
1513: if ($curr_required eq '') {
1.471 raeburn 1514: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 1515: } else {
1516: my ($currmajor,$currminor) = split(/\./,$curr_required);
1517: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
1518: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471 raeburn 1519: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 1520: }
1.292 raeburn 1521: }
1522: }
1.285 raeburn 1523: }
1524: }
1.512.2.9 raeburn 1525: if (keys(%aggregate) > 0) {
1.289 albertel 1526: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 1527: $cdomain,$cname);
1528: }
1.472 raeburn 1529: if (keys(%anoncounter) > 0) {
1.481 raeburn 1530: &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
1531: $cdomain,$cname);
1.472 raeburn 1532: }
1.479 raeburn 1533: if (keys(%randtrycounter) > 0) {
1.481 raeburn 1534: &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
1535: $cdomain,$cname);
1.479 raeburn 1536: }
1.292 raeburn 1537: }
1.289 albertel 1538:
1.65 albertel 1539: sub checkout_msg {
1.211 albertel 1540: my %lt=&Apache::lonlocal::texthash(
1541: 'resource'=>'The resource needs to be checked out',
1542: '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.',
1543: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
1.512.2.1 raeburn 1544: 'checkout'=>'Check out Exam for Viewing',
1545: 'checkout?'=>'Check out Exam?');
1.352 albertel 1546: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 1547: return (<<ENDCHECKOUT);
1.211 albertel 1548: <h2>$lt{'resource'}</h2>
1549: <p>$lt{'id_expln'}</p>
1.449 bisitz 1550: <p class="LC_warning">$lt{'warning'}</p>
1.444 bisitz 1551: <form name="checkout" method="post" action="$uri">
1.91 albertel 1552: <input type="hidden" name="doescheckout" value="yes" />
1.512.2.4 raeburn 1553: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onclick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 1554: </form>
1555: ENDCHECKOUT
1556: }
1557:
1.252 albertel 1558: sub firstaccess_msg {
1.253 albertel 1559: my ($time,$symb)=@_;
1.414 albertel 1560: my $result;
1561: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1562: if ($interval[1] eq 'map') {
1563: my ($map)=&Apache::lonnet::decode_symb($symb);
1564: my $foldertitle=&Apache::lonnet::gettitle($map);
1565:
1566: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.504 golterma 1567: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$foldertitle)."</h2>"
1568: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1569: ,$foldertitle,$time)."</p>";
1.414 albertel 1570: } elsif ($interval[1] eq 'course') {
1571: my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.504 golterma 1572: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$course)."</h2>"
1.505 golterma 1573: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1.504 golterma 1574: ,$course,$time)."</p>";
1.414 albertel 1575: } else {
1576: my $title=&Apache::lonnet::gettitle($symb);
1.504 golterma 1577: $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.',$title)."</h2>"
1578: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
1579: ,$title,$time)."</p>";
1.414 albertel 1580: }
1.352 albertel 1581: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418 bisitz 1582: my $buttontext = &mt('Show Resource');
1583: my $timertext = &mt('Start Timer?');
1.512.2.24 raeburn 1584: my $shownsymb = &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb),'\'"<>&');
1.414 albertel 1585: $result .= (<<ENDCHECKOUT);
1.444 bisitz 1586: <form name="markaccess" method="post" action="$uri">
1.252 albertel 1587: <input type="hidden" name="markaccess" value="yes" />
1.512.2.24 raeburn 1588: <input type="hidden" name="symb" value="$shownsymb" />
1.512.2.4 raeburn 1589: <input type="button" name="accessbutton" value="$buttontext" onclick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252 albertel 1590: </form>
1591: ENDCHECKOUT
1.414 albertel 1592: return $result;
1.252 albertel 1593: }
1594:
1.204 albertel 1595: sub init_problem_globals {
1596: my ($type)=@_;
1597: #initialize globals
1.308 foxr 1598: # For problems, we start out in part 0 (outside a <part> tag).
1599: # and part 0 is used to describe the main body of the <problem>
1600: #
1.204 albertel 1601: if ($type eq 'problem') {
1602: $Apache::inputtags::part='0';
1603: @Apache::inputtags::partlist=('0');
1.405 albertel 1604: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 1605: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 1606:
1.266 albertel 1607: } elsif ($type eq 'library') {
1.204 albertel 1608: $Apache::inputtags::part='';
1609: @Apache::inputtags::partlist=();
1.405 albertel 1610: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 1611: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 1612:
1.304 albertel 1613: } elsif ($type eq 'Task') {
1614: $Apache::inputtags::part='0';
1615: @Apache::inputtags::partlist=('0');
1.405 albertel 1616: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 1617: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 1618: }
1.477 www 1619: @Apache::functionplotresponse::callscripts=();
1.204 albertel 1620: @Apache::inputtags::responselist = ();
1621: @Apache::inputtags::importlist = ();
1622: @Apache::inputtags::previous=();
1623: @Apache::inputtags::previous_version=();
1.512.2.10 raeburn 1624: $Apache::inputtags::leniency='';
1.204 albertel 1625: $Apache::structuretags::printanswer='No';
1626: @Apache::structuretags::whileconds=();
1627: @Apache::structuretags::whilebody=();
1628: @Apache::structuretags::whileline=();
1629: $Apache::lonhomework::scantronmode=0;
1.512.2.21 raeburn 1630: $Apache::lonhomework::randomizetrypart=0;
1.204 albertel 1631: undef($Apache::lonhomework::name);
1.358 albertel 1632: undef($Apache::lonhomework::default_type);
1633: undef($Apache::lonhomework::type);
1.204 albertel 1634: }
1635:
1636: sub reset_problem_globals {
1637: my ($type)=@_;
1638: undef(%Apache::lonhomework::history);
1639: undef(%Apache::lonhomework::results);
1640: undef($Apache::inputtags::part);
1.512.2.10 raeburn 1641: undef($Apache::inputtags::leniency);
1.498 raeburn 1642: if ($type eq 'Task') {
1643: undef($Apache::inputtags::slot_name);
1.512.2.9 raeburn 1644: } elsif ($type eq 'problem') {
1645: undef($Apache::lonhomework::rawrndseed);
1.498 raeburn 1646: }
1.208 albertel 1647: #don't undef this, lonhomework.pm takes care of this, we use this to
1648: #detect if we try to do 2 problems in one file
1649: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 1650: undef($Apache::lonhomework::name);
1.358 albertel 1651: undef($Apache::lonhomework::default_type);
1652: undef($Apache::lonhomework::type);
1653: undef($Apache::lonhomework::scantronmode);
1.512.2.21 raeburn 1654: undef($Apache::inputtags::randomizetrypart);
1.358 albertel 1655: undef($Apache::lonhomework::ignore_response_errors);
1.477 www 1656: undef(@Apache::functionplotresponse::callscripts);
1.405 albertel 1657: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 1658: }
1659:
1.241 albertel 1660: sub set_problem_state {
1.240 albertel 1661: my ($part)=@_;
1.284 albertel 1662: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 1663: $Apache::lonhomework::history{"resource.$part.solved"}=
1664: 'correct_by_student';
1665: }
1666: }
1667:
1.241 albertel 1668: sub get_problem_status {
1669: my ($part)=@_;
1.267 albertel 1670: my $problem_status;
1.284 albertel 1671: if ($env{'request.state'} eq 'construct' &&
1672: defined($env{'form.problemstatus'})) {
1673: $problem_status=$env{'form.problemstatus'};
1.267 albertel 1674: } else {
1675: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
1676: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 1677: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 1678: }
1679: return $problem_status;
1680: }
1681:
1.9 albertel 1682: sub start_problem {
1.326 albertel 1683: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 1684:
1.311 foxr 1685: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 1686: if (!$Apache::lonxml::metamode) {
1687: &Apache::lonxml::startredirection();
1688: }
1.311 foxr 1689:
1.308 foxr 1690: # Problems don't nest and we don't allow more than one <problem> in
1691: # a .problem file.
1692: #
1.184 albertel 1693: if ( $Apache::inputtags::part ne '' ||
1694: $Apache::lonhomework::parsing_a_problem) {
1695: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 1696: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 1697: return '';
1698: }
1.184 albertel 1699:
1700: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 1701: &init_problem_globals('problem');
1.166 albertel 1702:
1.284 albertel 1703: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 1704: $Apache::lonhomework::scantronmode=1;
1705: }
1.161 albertel 1706:
1.159 albertel 1707: if ($target ne 'analyze') {
1.415 raeburn 1708: my $type = &Apache::lonnet::EXT('resource.0.type');
1709: $Apache::lonhomework::type=$type;
1.284 albertel 1710: if (($env{'request.state'} eq 'construct') &&
1.410 albertel 1711: $env{'form.problemtype'} =~ /\S/) {
1.284 albertel 1712: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 1713: }
1.332 albertel 1714: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 1715: }
1.164 albertel 1716: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 1717: my $uri=$env{'request.uri'};
1.159 albertel 1718: if ($uri=~/\.(\w+)$/) {
1719: $Apache::lonhomework::type=$1;
1720: &Apache::lonxml::debug("Using type of $1");
1721: } else {
1722: $Apache::lonhomework::type='problem';
1723: &Apache::lonxml::debug("Using default type, problem, :$uri:");
1724: }
1.87 albertel 1725: }
1.301 albertel 1726: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 1727:
1.363 albertel 1728: &initialize_storage();
1.389 albertel 1729: if ($target ne 'analyze'
1730: && $env{'request.state'} eq 'construct') {
1731: &set_problem_state('0');
1732: }
1733:
1.366 albertel 1734: if ($target eq 'web') {
1735: &Apache::lonxml::debug(" grading history ");
1736: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1737: }
1.363 albertel 1738:
1.159 albertel 1739: #added vars to the scripting enviroment
1.213 albertel 1740: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 1741: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 1742: &Apache::run::run($expression,$safeeval);
1.159 albertel 1743: my $status;
1744: my $accessmsg;
1.508 raeburn 1745: my $resource_due;
1.159 albertel 1746:
1.343 albertel 1747: my $name= &get_resource_name($parstack,$safeeval);
1.512.2.16 raeburn 1748: my ($result,$form_tag_start,$slot_name,$slot,$probpartlist,$firstaccres);
1.506 raeburn 1749:
1750: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1751: $target eq 'tex') {
1752: if ($env{'form.markaccess'}) {
1753: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1.512.2.24.2. (raeburn 1754:): my ($timelimit) = ($interval[0] =~ /^(\d+)/);
1755:): my $is_set = &Apache::lonnet::set_first_access($interval[1],$timelimit);
1.512.2.16 raeburn 1756: unless (($is_set eq 'ok') || ($is_set eq 'already_set')) {
1757: $firstaccres = $is_set;
1758: }
1.506 raeburn 1759: }
1760:
1761: ($status,$accessmsg,$slot_name,$slot) =
1762: &Apache::lonhomework::check_slot_access('0','problem');
1763: push (@Apache::inputtags::status,$status);
1764: }
1765:
1.354 albertel 1766: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
1767: || $target eq 'edit') {
1.512.2.9 raeburn 1768: ($result,$form_tag_start,$probpartlist) =
1.350 albertel 1769: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1770: $name);
1.512.2.9 raeburn 1771: } elsif (($target eq 'grade') && ($Apache::lonhomework::type eq 'randomizetry')) {
1772: my ($symb)= &Apache::lonnet::whichuser();
1.512.2.22 raeburn 1773: if ($symb ne '') {
1774: my $navmap = Apache::lonnavmaps::navmap->new();
1775: if (ref($navmap)) {
1776: my $res = $navmap->getBySymb($symb);
1777: if (ref($res)) {
1778: $probpartlist = $res->parts();
1779: }
1.512.2.9 raeburn 1780: }
1781: }
1.350 albertel 1782: }
1783:
1.284 albertel 1784: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 1785:
1.479 raeburn 1786: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159 albertel 1787: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1788: $target eq 'tex') {
1.479 raeburn 1789:
1.512.2.22 raeburn 1790: my ($symb) = &Apache::lonnet::whichuser();
1.159 albertel 1791: #handle rand seed in construction space
1.512.2.22 raeburn 1792: if (($env{'request.state'} eq 'construct') || ($symb eq '')) {
1793: my $partorder=&Apache::lonnet::metadata($env{'request.uri'},'partorder');
1794: if ($partorder ne '') {
1795: @{$probpartlist} = split(/,/,$partorder);
1796: }
1797: }
1.512.2.9 raeburn 1798: my $rndseed=&setup_rndseed($safeeval,$target,$probpartlist);
1799: if (($target eq 'grade') && &Apache::response::submitted()) {
1800: if ($Apache::lonhomework::type eq 'randomizetry') {
1801: $Apache::lonhomework::results{'resource.0.rndseed'}=$rndseed;
1802: } else {
1803: my @parts;
1804: if (ref($probpartlist) eq 'ARRAY') {
1805: @parts = @{$probpartlist};
1806: }
1807: unless (@parts) {
1808: $Apache::lonhomework::results{'resource.0.rndseed'}=$Apache::lonhomework::rawrndseed;
1809: }
1810: }
1811: }
1.479 raeburn 1812:
1.333 albertel 1813: if ($env{'request.state'} ne "construct" &&
1814: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.512.2.20 raeburn 1815: my $rndseedval = $rndseed;
1816: if (($symb eq '') && ($Apache::lonhomework::type eq 'randomizetry')) {
1817: $rndseedval = $env{'form.rndseed'};
1818: }
1.162 albertel 1819: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.512.2.20 raeburn 1820: $rndseedval.'" />'.
1.462 raeburn 1821: '<input type="submit" name="resetdata"
1822: value="'.&mt('New Problem Variation').'" />';
1.334 albertel 1823: if (exists($env{'form.username'})) {
1824: $form_tag_start.=
1.164 albertel 1825: '<input type="hidden" name="username"
1.284 albertel 1826: value="'.$env{'form.username'}.'" />';
1.334 albertel 1827: }
1.462 raeburn 1828: if ($env{'request.role.adv'}) {
1829: $form_tag_start.= ' <label class="LC_nobreak">'
1830: .'<input type="checkbox" name="showallfoils"';
1831: if (defined($env{'form.showallfoils'})) {
1832: $form_tag_start.=' checked="checked"';
1833: }
1834: $form_tag_start.= ' /> '
1835: .&mt('Show All Foils')
1836: .'</label>';
1837: }
1.417 www 1838: if ($Apache::lonhomework::type eq 'practice') {
1.428 raeburn 1839: $form_tag_start.=&practice_problem_header();
1.417 www 1840: }
1.462 raeburn 1841: $form_tag_start.='<hr />';
1.512.2.20 raeburn 1842: }
1843: if (($env{'request.state'} ne "construct") &&
1844: ($Apache::lonhomework::type eq 'randomizetry') &&
1845: ($status eq 'CAN_ANSWER')) {
1.512.2.21 raeburn 1846: my @parts;
1847: if (ref($probpartlist) eq 'ARRAY') {
1848: @parts = @{$probpartlist};
1849: }
1850: unless (@parts) {
1851: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1852: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1853: $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries,$symb);
1854: }
1.479 raeburn 1855: }
1.324 albertel 1856:
1.159 albertel 1857: my $expression='$external::datestatus="'.$status.'";';
1858: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
1859: &Apache::run::run($expression,$safeeval);
1860: &Apache::lonxml::debug("Got $status");
1.324 albertel 1861:
1.159 albertel 1862: if (( $status eq 'CLOSED' ) ||
1863: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1864: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 1865: ( $status eq 'BANNED') ||
1.216 albertel 1866: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 1867: ( $status eq 'NOT_IN_A_SLOT') ||
1.499 raeburn 1868: ( $status eq 'NOTRESERVABLE') ||
1869: ( $status eq 'RESERVABLE') ||
1870: ( $status eq 'RESERVABLE_LATER') ||
1.216 albertel 1871: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1872: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1873: $style);
1.159 albertel 1874: if ( $target eq "web" ) {
1.343 albertel 1875: my $msg;
1.159 albertel 1876: if ($status eq 'UNAVAILABLE') {
1.504 golterma 1877: $msg.='<p class="LC_error">'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</p>';
1.441 raeburn 1878: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.504 golterma 1879: $msg.='<p class="LC_warning">'.&mt('You are not currently signed up to work at this time and/or place.').'</p>';
1.499 raeburn 1880: } elsif (($status eq 'RESERVABLE') || ($status eq 'RESERVABLE_LATER') ||
1881: ($status eq 'NOTRESERVABLE')) {
1.504 golterma 1882: $msg.='<p class="LC_warning">'.&mt('Access requires reservation to work at specific time/place.').'</p>';
1.253 albertel 1883: } elsif ($status ne 'NOT_YET_VIEWED') {
1.504 golterma 1884: $msg.='<p class="LC_warning">'.&mt('Not open to be viewed').'</p>';
1.499 raeburn 1885: }
1.216 albertel 1886: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 1887: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 1888: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 1889: $msg.=&checkout_msg();
1.252 albertel 1890: } elsif ($status eq 'NOT_YET_VIEWED') {
1.512.2.16 raeburn 1891: if ($firstaccres) {
1892: $msg .= '<p class="LC_error">'.
1893: &mt('A problem occurred when trying to start the timer.').'</p>';
1894: }
1.253 albertel 1895: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 1896: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.441 raeburn 1897: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.499 raeburn 1898: } elsif ($status eq 'RESERVABLE') {
1899: $msg.=&mt('Available to make a reservation.').' '.&mt('Reservation window closes [_1].',
1900: &Apache::lonnavmaps::timeToHumanString($accessmsg,'end')).
1901: '<br />'.
1902: &Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1903: } elsif ($status eq 'RESERVABLE_LATER') {
1904: $msg.=&mt('Window to make a reservation will open [_1].',
1905: &Apache::lonnavmaps::timeToHumanString($accessmsg,'start'));
1906: } elsif ($status eq 'NOTRESERVABLE') {
1907: $msg.=&mt('Not available to make a reservation.');
1.159 albertel 1908: }
1909: $result.=$msg.'<br />';
1910: } elsif ($target eq 'tex') {
1.332 albertel 1911: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
1912: : '\begin{minipage}{\textwidth}';
1.443 foxr 1913: $result.='\noindent \vskip 1 mm '.
1.332 albertel 1914: $startminipage.'\vskip 0 mm';
1.159 albertel 1915: if ($status eq 'UNAVAILABLE') {
1.211 albertel 1916: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 1917: } else {
1.211 albertel 1918: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 1919: }
1920: }
1.324 albertel 1921: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 1922: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1923: $style);
1.324 albertel 1924: if ($target eq 'web') {
1.375 albertel 1925: $result .=
1926: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 1927: } elsif ($target eq 'grade') {
1928: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
1929: 'problem');
1930: }
1.159 albertel 1931: } elsif ($target eq 'web') {
1.508 raeburn 1932: if ($status eq 'CAN_ANSWER') {
1933: $resource_due = &Apache::lonhomework::due_date(0, $env{'request.symb'});
1934: if ($slot_name ne '') {
1935: my $checked_in =
1936: $Apache::lonhomework::history{'resource.0.checkedin'};
1937: if ($checked_in eq '') {
1938: # unproctored slot access, self checkin
1939: &Apache::bridgetask::check_in('problem',undef,undef,
1940: $slot_name);
1941: $checked_in =
1942: $Apache::lonhomework::results{"resource.0.checkedin"};
1943: }
1944: if ((ref($slot) eq 'HASH') && ($checked_in ne '')) {
1945: if ($slot->{'starttime'} < time()) {
1946: if (!$resource_due) {
1947: $resource_due = $slot->{'endtime'};
1948: } elsif ($slot->{'endtime'} < $resource_due) {
1949: $resource_due = $slot->{'endtime'};
1950: }
1951: }
1952: }
1953: }
1954: if ($resource_due) {
1955: my $time_left = $resource_due - time();
1956: if ($resource_due && ($time_left > 0) && ($target eq 'web')) {
1957: $result .= &Apache::lonhtmlcommon::set_due_date($resource_due);
1958: }
1959: }
1960: }
1.368 albertel 1961: $result.="\n $form_tag_start \t".
1.227 albertel 1962: '<input type="hidden" name="submitted" value="yes" />';
1963: # create a page header and exit
1.284 albertel 1964: if ($env{'request.state'} eq "construct") {
1965: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428 raeburn 1966: if ($Apache::lonhomework::type eq 'practice') {
1967: $result.= '<input type="submit" name="resetdata" '.
1968: 'value="'.&mt('New Problem Variation').'" />'.
1969: &practice_problem_header().'<hr />';
1.512.2.19 raeburn 1970: } elsif ($Apache::lonhomework::type eq 'randomizetry') {
1971: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1972: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1973: $result.=&randomizetry_problem_header($problemstatus,$reqtries);
1.428 raeburn 1974: }
1.227 albertel 1975: }
1976: # if we are viewing someone else preserve that info
1.284 albertel 1977: if (defined $env{'form.grade_symb'}) {
1.227 albertel 1978: foreach my $field ('symb','courseid','domain','username') {
1979: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 1980: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 1981: }
1.479 raeburn 1982: foreach my $field ('trial','questiontype') {
1983: if ($env{"form.grade_$field"} ne '') {
1984: $result .= '<input type="hidden" name="grade_'.$field.
1985: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1986: }
1987: }
1.159 albertel 1988: }
1.490 raeburn 1989: if ($env{'form.grade_imsexport'}) {
1990: $result = '';
1991: }
1.159 albertel 1992: } elsif ($target eq 'tex') {
1.319 foxr 1993: $result .= 'INSERTTEXFRONTMATTERHERE';
1.500 foxr 1994: $result .= &select_metadata_hyphenation();
1995:
1.319 foxr 1996:
1.99 sakharuk 1997: }
1.159 albertel 1998: } elsif ($target eq 'edit') {
1.343 albertel 1999: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 2000: $Apache::lonxml::warnings_error_header=
2001: &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 2002: my $temp=&Apache::edit::insertlist($target,$token);
2003: $result.=$temp;
2004: } elsif ($target eq 'modified') {
2005: $result=$token->[4];
2006: } else {
2007: # page_start returned a starting result, delete it if we don't need it
2008: $result = '';
1.99 sakharuk 2009: }
1.159 albertel 2010: return $result;
1.9 albertel 2011: }
2012:
2013: sub end_problem {
1.159 albertel 2014: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 2015: my $result;
1.310 foxr 2016:
1.321 albertel 2017: if (!$Apache::lonxml::metamode) {
2018: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 2019: $Apache::lonxml::post_evaluate=0;
1.321 albertel 2020: }
1.319 foxr 2021:
2022: if ($target eq 'tex') {
1.321 albertel 2023: # Figure out the front matter and replace the
2024: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
2025: # this in end_problem because whether or not we display due
2026: # dates depends on whether due dates have already been
2027: # displayed in the problem parts.
2028:
1.319 foxr 2029: my $frontmatter = '';
2030: my $startminipage = '';
2031: if (not $env{'form.problem_split'}=~/yes/) {
2032: $startminipage = '\begin{minipage}{\textwidth}';
2033: }
2034: my $id = $Apache::inputtags::part;
2035: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
2036: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9 raeburn 2037: my @packages = split(/,/,$packages);
1.319 foxr 2038: my $allow_print_points = 0;
2039: foreach my $partial_key (@packages) {
2040: if ($partial_key=~m/^part_0$/) {
2041: $allow_print_points=1;
2042: }
2043: }
2044: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
2045: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
2046: if (lc($env{'course.'.$env{'request.course.id'}.
2047: '.disableexampointprint'}) eq 'yes') {
2048: $allow_print_points=0;
2049: }
2050: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443 foxr 2051: 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 2052: &clear_required_languages();
1.319 foxr 2053: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
2054: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
2055:
2056: # Figure out what the due date is and if we need to print
2057: # it in the problem header. We have been logging the
2058: # last due date written to file.
2059:
2060: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
2061: my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448 bisitz 2062: my $duedate_text = &mt('Due date: [_1]'
2063: ,&Apache::lonlocal::locallocaltime($duetime));
1.319 foxr 2064: my $temp_file;
2065: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
2066:
2067: # Figure out what the last printed due date is or set it
2068: # to the epoch if no duedates have been printed.
2069:
2070: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
2071: if (-e $filename) {
2072: $temp_file = Apache::File->new($filename);
2073: my @due_file = <$temp_file>;
2074: $due_file_content = $due_file[$#due_file];
2075: chomp $due_file_content;
2076: }
2077:
2078: # We display the due date iff it is not the same as the last
2079: # duedate in problem header ($due_file_content), and
2080: # none of our parts displayed a duedate.
2081: #
2082: my $parts_with_displayduedate;
2083: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
2084: $parts_with_displayduedate =
2085: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
2086: } else {
2087: $parts_with_displayduedate = 0;
2088: }
2089: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
2090: $temp_file = Apache::File->new('>'.$filename);
2091: print $temp_file "$duetime\n";
2092: if (not $env{'request.symb'} =~ m/\.page_/) {
2093: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
2094: $frontmatter .= $begin_doc.
1.448 bisitz 2095: '\textit{'.$duedate_text.'} '.$toc_line;
1.319 foxr 2096: } else {
2097: $frontmatter.= $begin_doc.$toc_line;
1.463 foxr 2098: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) {
1.492 christia 2099: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2100: }
1.319 foxr 2101: }
2102: } else {
1.448 bisitz 2103: $frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319 foxr 2104: }
2105: } else {
2106: if (not $env{'request.symb'} =~ m/\.page_/) {
2107: $frontmatter .= $begin_doc.$toc_line;
1.463 foxr 2108: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) {
1.492 christia 2109: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2110: }
1.319 foxr 2111: } else {
1.381 albertel 2112: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 2113: }
2114: }
2115: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
2116: }
2117:
1.159 albertel 2118: my $status=$Apache::inputtags::status['-1'];
2119: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
2120: $target eq 'tex') {
1.249 albertel 2121: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 2122: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 2123: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
2124: &Apache::inputtags::grade;
1.324 albertel 2125: } elsif ($status eq 'NEEDS_CHECKIN') {
2126: # no need to grade, and don't want to hide data
1.249 albertel 2127: } else {
2128: # move any submission data to .hidden
2129: &Apache::inputtags::hidealldata($Apache::inputtags::part);
2130: }
1.159 albertel 2131: } elsif ( ($target eq 'web' || $target eq 'tex') &&
2132: $Apache::inputtags::part eq '0' &&
1.490 raeburn 2133: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED'
2134: && !$env{'form.grade_imsexport'}) {
1.159 albertel 2135: # if part is zero, no <part>s existed, so we need show the current
2136: # grading status
2137: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
2138: $result.= $gradestatus;
2139: }
2140: if (
1.284 albertel 2141: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 2142: ($target eq 'answer') || ($target eq 'tex')
2143: ) {
1.490 raeburn 2144: if (($target ne 'tex') &&
2145: ($env{'form.answer_output_mode'} ne 'tex') &&
2146: (!$env{'form.grade_imsexport'})) {
1.254 www 2147: $result.="</form>";
1.159 albertel 2148: }
2149: if ($target eq 'web') {
1.507 raeburn 2150: #
2151: # Closing </body></html> not added by end_page().
2152: # Added separately at end of this routine, after added
2153: # <script></script> so document will be valid xhtml.
2154: #
2155: $result.= &Apache::loncommon::end_page({'discussion' => 1,
2156: 'notbody' => 1});
1.159 albertel 2157: } elsif ($target eq 'tex') {
1.178 sakharuk 2158: my $endminipage = '';
1.284 albertel 2159: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 2160: $endminipage = '\end{minipage}';
2161: }
1.284 albertel 2162: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 2163: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 2164: } else {
1.262 sakharuk 2165: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 2166: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 2167: $result .= $endminipage.'\end{document} ';
2168: } else {
1.382 albertel 2169: $result .= $endminipage;
1.262 sakharuk 2170: }
1.159 albertel 2171: }
2172: }
2173: }
1.476 www 2174: if ($target eq 'web') {
1.512.2.21 raeburn 2175: $result.=&Apache::functionplotresponse::init_script();
2176: if ($Apache::lonhomework::default_type eq 'randomizetry') {
2177: my ($symb) = &Apache::lonnet::whichuser();
2178: if ((($env{'request.state'} eq 'construct') || ($symb eq '')) &&
2179: ($status eq 'CAN_ANSWER')) {
2180: unless (@Apache::inputtags::partlist > 1) {
2181: $result.= <<"ENDJS";
2182: <script type="text/javascript">
2183: // <![CDATA[
2184: \$(document).ready(function() {
2185: \$('#LC_randomizetry_header').css('display','block');
2186: });
2187: // ]]>
2188: </script>
2189: ENDJS
2190: }
2191: }
2192: }
1.476 www 2193: }
1.159 albertel 2194: if ($target eq 'grade') {
2195: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
2196: &finalize_storage();
2197: }
1.284 albertel 2198: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
2199: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 2200: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 2201: # normally we get it from above, but in CSTR
1.172 albertel 2202: # we always show answer mode too.
1.159 albertel 2203: }
2204: } elsif ($target eq 'meta') {
2205: if ($Apache::inputtags::part eq '0') {
1.179 albertel 2206: @Apache::inputtags::response=();
1.159 albertel 2207: $result=&Apache::response::mandatory_part_meta;
2208: }
1.215 albertel 2209: $result.=&Apache::response::meta_part_order();
1.258 albertel 2210: $result.=&Apache::response::meta_response_order();
1.159 albertel 2211: } elsif ($target eq 'edit') {
2212: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 2213: $result .= &problem_edit_footer();
1.320 albertel 2214: } elsif ($target eq 'modified') {
2215: $result .= $token->[2];
1.159 albertel 2216: }
1.155 albertel 2217:
1.284 albertel 2218: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 2219: &Apache::inputtags::check_for_duplicate_ids();
2220: }
1.204 albertel 2221:
2222: &reset_problem_globals('problem');
1.159 albertel 2223:
1.502 foxr 2224: #
2225: # This shouild be just above the return so that the
2226: # time put in the javascript is as late as possible in the
2227: # computation:
2228: #
2229: if ($target eq 'web') {
2230: $result .= &Apache::lonhtmlcommon::set_compute_end_time();
1.507 raeburn 2231: #
2232: # Closing tags delayed so any <script></script> tags
2233: # not in head can appear inside body, for valid xhtml.
2234: #
2235: $result .= "</body>\n</html>";
1.502 foxr 2236: }
1.159 albertel 2237: return $result;
1.48 albertel 2238: }
2239:
1.108 albertel 2240:
1.48 albertel 2241: sub start_library {
1.159 albertel 2242: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 2243: my ($result,$form_tag_start);
1.371 albertel 2244: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 2245: &init_problem_globals('library');
2246: $Apache::lonhomework::type='problem';
2247: }
1.159 albertel 2248: if ($target eq 'edit') {
1.343 albertel 2249: ($result,$form_tag_start)=
2250: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
2251: 'Edit');
2252: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 2253: my $temp=&Apache::edit::insertlist($target,$token);
2254: $result.=$temp;
2255: } elsif ($target eq 'modified') {
2256: $result=$token->[4];
1.340 albertel 2257: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 2258: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 2259: && $env{'request.state'} eq "construct" ) {
1.159 albertel 2260: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 2261: ($result,$form_tag_start)=
2262: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
2263: $name);
1.479 raeburn 2264: my $rndseed=&setup_rndseed($safeeval,$target);
1.343 albertel 2265: $result.=" \n $form_tag_start".
1.159 albertel 2266: '<input type="hidden" name="submitted" value="yes" />';
2267: $result.=&problem_web_to_edit_header($rndseed);
1.428 raeburn 2268: if ($Apache::lonhomework::type eq 'practice') {
2269: $result.= '<input type="submit" name="resetdata" '.
2270: 'value="'.&mt('New Problem Variation').'" />'.
2271: &practice_problem_header().'<hr />';
2272: }
1.159 albertel 2273: }
2274: return $result;
1.48 albertel 2275: }
2276:
2277: sub end_library {
1.159 albertel 2278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2279: my $result='';
2280: if ($target eq 'edit') {
2281: $result=&problem_edit_footer();
1.371 albertel 2282: } elsif ($target eq 'web'
2283: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
2284: && $env{'request.state'} eq "construct") {
1.349 albertel 2285: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.512.2.15 raeburn 2286: } elsif ($target eq 'meta') {
2287: $result.=&Apache::response::meta_response_order();
1.159 albertel 2288: }
1.371 albertel 2289: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
2290: &reset_problem_globals('library');
2291: }
1.159 albertel 2292: return $result;
1.197 www 2293: }
2294:
2295: sub start_definetag {
1.326 albertel 2296: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 2297:
2298: my $result;
2299:
2300: my $name = $token->[2]->{'name'};
1.326 albertel 2301: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 2302: if ($target eq 'web') {
2303: if ($name=~/^\//) {
2304: $result=
2305: '<br /><table class="LC_sty_end"><tr><th>'.
2306: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
2307: } else {
2308: $result=
2309: '<br /><table class="LC_sty_begin"><tr><th>'.
2310: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
2311: }
2312: $skip = &HTML::Entities::encode($skip, '<>&"');
2313: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 2314: }
2315: return $result;
2316: }
2317:
2318: sub end_definetag {
2319: return '';
1.1 albertel 2320: }
2321:
2322: sub start_block {
1.201 albertel 2323: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 2324:
2325: my $result;
1.1 albertel 2326:
1.339 albertel 2327: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2328: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 2329: my $code = $token->[2]->{'condition'};
1.385 albertel 2330: if (defined($code) && $code ne '') {
1.137 albertel 2331: if (!$Apache::lonxml::default_homework_loaded) {
2332: &Apache::lonxml::default_homework_load($safeeval);
2333: }
1.131 albertel 2334: $result = &Apache::run::run($code,$safeeval);
2335: &Apache::lonxml::debug("block :$code: returned :$result:");
2336: } else {
2337: $result='1';
2338: }
2339: if ( ! $result ) {
1.201 albertel 2340: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 2341: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2342: }
2343: $result='';
2344: } elsif ($target eq 'edit') {
2345: $result .=&Apache::edit::tag_start($target,$token);
2346: $result .=&Apache::edit::text_arg('Test Condition:','condition',
2347: $token,40);
2348: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2349: } elsif ($target eq 'modified') {
2350: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2351: $safeeval,'condition');
2352: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 2353: }
1.131 albertel 2354: return $result;
1.1 albertel 2355: }
2356:
2357: sub end_block {
1.167 www 2358: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2359: my $result;
2360: if ($target eq "edit") {
2361: $result.= &Apache::edit::tag_end($target,$token,'');
2362: }
2363: return $result;
2364: }
1.500 foxr 2365: #
2366: # <languageblock [include='lang1,lang2...'] [exclude='lang1,lang2...']>
2367: # ...
2368: # </languageblock>
2369: #
2370: # This declares the intent to provide content that can be rendered in the
2371: # set of languages in the include specificatino but not in the exclude
2372: # specification. If a currently preferred language is in the include list
2373: # the content in the <languageblock>...</languageblock> is rendered
2374: # If the currently preferred language is in the exclude list,
2375: # the content in the <languageblock>..></languageblock is not rendered.
2376: #
2377: # Pathalogical case handling:
2378: # - Include specified, without the preferred language but exclude specified
2379: # also without the preferred langauge results in rendering the block.
2380: # - Exclude specified without include and excluden not containing a
2381: # preferred language renders the block.
2382: # - Include and exclude both specifying the preferred language does not
2383: # render the block.
2384: # - If neither include/exclude is specified, the block gets rendered.
2385: #
2386: # This tag has no effect when target is in {edit, modified}
2387: #
1.167 www 2388: sub start_languageblock {
1.201 albertel 2389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 2390:
1.500 foxr 2391: my $result = '';
1.167 www 2392:
1.339 albertel 2393: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2394: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 2395: my $include = $token->[2]->{'include'};
2396: my $exclude = $token->[2]->{'exclude'};
1.436 raeburn 2397: my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.500 foxr 2398:
2399: # This should not even happen, since we should at least have the server language
2400:
2401: if (!$preferred_languages[0]) {
2402: $preferred_languages[0]='en';
2403: }
2404:
2405: # Now loop over all languages in order of preference
2406:
2407: my $render;
1.398 www 2408: foreach my $preferred_language (@preferred_languages) {
1.500 foxr 2409:
2410: # If neither include/nor exlude is present the block is going
2411: # to get rendered.
2412:
1.399 www 2413: my $found=0;
1.500 foxr 2414: $render=1;
2415:
2416: # If include is specified, don't render the block
2417: # unless the preferred language is included in the set.
2418:
1.398 www 2419: if ($include) {
1.500 foxr 2420: $render=0;
1.398 www 2421: foreach my $included_language (split(/\,/,$include)) {
2422: if ($included_language eq $preferred_language) {
1.500 foxr 2423: $render=1;
1.399 www 2424: $found=1;
1.500 foxr 2425: last; # Only need to find the first.
1.398 www 2426: }
2427: }
2428: }
1.500 foxr 2429: # Do we have an exclude argument?
2430: # If so, and one of the languages matches a preferred language
2431: # inhibit rendering the block. Note that in the pathalogical case the
2432: # author has specified a preferred language in both the include and exclude
2433: # attribte exclude is preferred.
2434:
1.398 www 2435: if ($exclude) {
1.500 foxr 2436: $render=1;
1.398 www 2437: foreach my $excluded_language (split(/\,/,$exclude)) {
2438: if ($excluded_language eq $preferred_language) {
1.500 foxr 2439: $render=0;
1.399 www 2440: $found=1;
1.500 foxr 2441: last; # Only need to find the first.
1.398 www 2442: }
2443: }
2444: }
1.500 foxr 2445: if ($found) {
2446: last; # Done on any match of include or exclude.
2447: }
1.398 www 2448: }
1.500 foxr 2449: # If $render not true skip the entire block until </languageblock>
2450: #
2451:
2452: if ( ! $render ) {
1.201 albertel 2453: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
2454: $style);
2455: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2456: }
1.500 foxr 2457: # If $render is true, we've not skipped the contents of the <languageglock>
2458: # and the normal loncapa processing flow will render it as a matter of course.
2459:
1.167 www 2460: } elsif ($target eq 'edit') {
2461: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 2462: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 2463: $token,40);
1.211 albertel 2464: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 2465: $token,40);
2466: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2467: } elsif ($target eq 'modified') {
2468: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 2469: $safeeval,'include',
2470: 'exclude');
1.167 www 2471: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2472: }
2473: return $result;
2474: }
2475:
2476: sub end_languageblock {
1.170 www 2477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2478: my $result;
1.201 albertel 2479: if ($target eq "edit") {
1.170 www 2480: $result.= &Apache::edit::tag_end($target,$token,'');
2481: }
2482: return $result;
2483: }
1.500 foxr 2484: # languagblock specific tags:
2485: {
2486: # For chunks of a resource that has translations, this hash contains
2487: # the translations available indexed by language name.
2488: #
2489:
2490: my %available_texts;
1.170 www 2491:
1.500 foxr 2492: # <translated> starts a block of a resource that has multiple translations.
2493: # See the <lang> tag as well.
2494: # When </translated> is encountered if there is a translation for the
2495: # currently preferred language, that is rendered inthe web/tex/webgrade
2496: # targets. Otherwise, the default text is rendered.
2497: #
2498: # Note that <lang> is only registered for the duration of the
2499: # <translated>...</translated> block
2500: #
2501: # Pathalogical case handling:
2502: # - If there is no <lang> that specifies a 'default' and there is no
2503: # translation that matches a preferred language, nothing is rendered.
2504: # - Nested <translated>...</translated> might be linguistically supported by
2505: # XML due to the stack nature of tag registration(?) however the rendered
2506: # output will be incorrect because there is only one %available_texts
2507: # has and end_translated clears it.
2508: # - Material outside of a <lang>...</lang> block within the
2509: # <translated>...<translated> block won't render either e.g.:
2510: # <translated>
2511: # The following will be in your preferred langauge:
2512: # <lang which='en'>
2513: # This section in english
2514: # </lang>
2515: # <lang which='sgeiso'>
2516: # Hier es ist auf Deutsch.
2517: # </lang>
2518: # <lang which='sfriso'>
2519: # En Francais
2520: # </lang>
2521: # </translated>
2522: #
2523: # The introductory text prior to the first <lang> tag is not rendered.
2524: #
1.397 albertel 2525: sub start_translated {
2526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2527: &Apache::lonxml::register('Apache::structuretags',('lang'));
2528: undef(%available_texts);
2529: }
2530:
2531: sub end_translated {
2532: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2533: my $result;
2534: #show the translation on viewable targets
2535: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
2536: # or non-viewable targets, if it's embedded in something that
2537: # wants the output
2538: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
2539: && &Apache::lonxml::in_redirection() ) ) {
2540: my @possibilities = keys(%available_texts);
2541: my $which =
2542: &Apache::loncommon::languages(\@possibilities) || 'default';
1.500 foxr 2543: if ($target eq 'tex') {
2544: $result = &select_hyphenation($which);
2545: }
2546: $result .= $available_texts{$which};
2547: if ($target eq 'tex') {
2548: $result .= &select_metadata_hyphenation(); # Restore original language.
2549: }
1.397 albertel 2550: }
2551: undef(%available_texts);
2552: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
2553: return $result;
2554: }
2555:
1.500 foxr 2556: # <lang [which='language-name'] [other='lang1,lang2...']>
2557: # Specifies that the block contained within it is a translation
2558: # for a specific language specified by the 'which' attribute. The
2559: # 'other' attribute can be used by itself or in conjunction with
2560: # which to specify this tag _may_ be used as a translation for some
2561: # list of languages. e.g.: <lang which='senisoUS' other='senisoCA,senisoAU,seniso'>
2562: # specifying that the block provides a translation for US (primary)
2563: # Canadian, Australian and UK Englush.
2564: #
2565: # Comment: this seems a bit silly why not just support a list of languages
2566: # e.g. <lang which='l1,l2...'> and ditch the other attribute?
2567: #
2568: # Effect:
2569: # The material within the <lang>..</lang> block is stored in the
2570: # specified set of $available_texts hash entries, the appropriate one
2571: # is selected at </translated> time.
2572: #
2573: # Pathalogical case handling:
2574: # If a language occurs multiple times within a <translated> block,
2575: # only the last one is rendered e.g.:
2576: #
2577: # <translated>
2578: # <lang which='senisoUS', other='senisoCA,senisoAU,seniso'>
2579: # Red green color blindness is quite common affecting about 7.8% of
2580: # the male population, but onloy about .65% of the female population.
2581: # </lang>
2582: # Red green colour blindness is quite common affecting about 7.8% of
2583: # the male population, but onloy about .65% of the female population.
2584: # <lang which='seniso', other='senisoCA,senisoAU'>
2585: # </translated>
2586: #
2587: # renders the correct spelling of color (colour) for people who have specified
2588: # a preferred language that is one of the British Commonwealth languages
2589: # even though those are also listed as valid selections for the US english
2590: # <lang> block.
2591: #
1.397 albertel 2592: sub start_lang {
2593: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2594: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2595: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
2596: &Apache::lonxml::startredirection();
2597: }
2598: return '';
2599: }
2600:
2601: sub end_lang {
2602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2603: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2604: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
2605: my $result = &Apache::lonxml::endredirection();
2606: my $which = &Apache::lonxml::get_param('which',$parstack,
2607: $safeeval);
1.431 raeburn 2608: if ($which=~/\w/) {
2609: $available_texts{$which} = $result;
2610: }
2611: my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
2612: $safeeval);
2613: foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
2614: if ($language=~/\w/) {
2615: $available_texts{$language} = $result;
2616: }
1.427 bisitz 2617: }
2618:
1.397 albertel 2619: }
2620: return '';
2621: }
1.500 foxr 2622: } # end langauge block specific tags.
2623:
1.397 albertel 2624:
1.170 www 2625: sub start_instructorcomment {
1.201 albertel 2626: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 2627:
2628: my $result;
2629:
1.339 albertel 2630: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2631: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468 raeburn 2632: $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284 albertel 2633: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 2634: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
2635: $parser,$style);
1.170 www 2636: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2637: }
2638: $result='';
2639: } elsif ($target eq 'edit') {
2640: $result .=&Apache::edit::tag_start($target,$token);
2641: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2642: }
2643: return $result;
2644: }
2645:
2646: sub end_instructorcomment {
1.159 albertel 2647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 2648: my $result;
2649: if ($target eq "edit") {
2650: $result.= &Apache::edit::tag_end($target,$token,'');
2651: }
2652: return $result;
1.4 tsai 2653: }
2654:
2655: sub start_while {
1.326 albertel 2656: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2657:
1.160 albertel 2658: my $result;
1.339 albertel 2659: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2660: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 2661: my $code = $token->[2]->{'condition'};
1.4 tsai 2662:
1.160 albertel 2663: push( @Apache::structuretags::whileconds, $code);
2664: if (!$Apache::lonxml::default_homework_loaded) {
2665: &Apache::lonxml::default_homework_load($safeeval);
2666: }
2667: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 2668: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 2669: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 2670: push( @Apache::structuretags::whileline, $token->[5]);
2671: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 2672: if ( $result ) {
2673: &Apache::lonxml::newparser($parser,\$bodytext);
2674: }
2675: } elsif ($target eq 'edit') {
2676: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 2677: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 2678: $token,40);
2679: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2680: } elsif ($target eq 'modified') {
2681: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2682: $safeeval,'condition');
2683: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 2684: }
1.160 albertel 2685: return $result;
1.4 tsai 2686: }
2687:
2688: sub end_while {
1.159 albertel 2689: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 2690: my $result;
2691:
1.339 albertel 2692: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2693: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 2694: my $code = pop(@Apache::structuretags::whileconds);
2695: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 2696: my $line = pop(@Apache::structuretags::whileline);
2697: my $return = &Apache::run::run($code,$safeeval);
2698: my $starttime=time;
2699: my $error=0;
2700: while ($return) {
2701: if (time-$starttime >
2702: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 2703: $return = 0; $error=1; next;
1.161 albertel 2704: }
2705: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 2706: if ($target eq 'grade' || $target eq 'answer' ||
2707: $target eq 'analyze') {
2708: # grade/answer/analyze should produce no output but if we
2709: # are redirecting, the redirecter should know what to do
2710: # with the output
2711: if (!$Apache::lonxml::redirection) { undef($result); }
2712: }
1.161 albertel 2713: $return = &Apache::run::run($code,$safeeval);
2714: }
1.512.2.5 raeburn 2715: if ($error) {
2716: &Apache::lonxml::error(
2717: '<pre>'
2718: .&mt('Code ran too long. It ran for more than [_1] seconds.',
2719: $Apache::lonnet::perlvar{'lonScriptTimeout'})
2720: .&mt('This occurred while running <while> on line [_1].',
2721: $line)
2722: .'</pre>');
2723: }
1.160 albertel 2724: } elsif ($target eq "edit") {
2725: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 2726: }
1.160 albertel 2727: return $result;
1.1 albertel 2728: }
1.6 tsai 2729:
1.160 albertel 2730: # <randomlist show="1">
1.6 tsai 2731: # <tag1>..</tag1>
2732: # <tag2>..</tag2>
2733: # <tag3>..</tag3>
1.160 albertel 2734: # ...
1.6 tsai 2735: # </randomlist>
2736: sub start_randomlist {
1.326 albertel 2737: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2738: my $result;
1.339 albertel 2739: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
2740: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 2741: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 2742: my $b_parser= HTML::LCParser->new(\$body);
2743: $b_parser->xml_mode(1);
2744: $b_parser->marked_sections(1);
1.159 albertel 2745: my $b_tok;
2746: my @randomlist;
2747: my $list_item;
2748: while($b_tok = $b_parser->get_token() ) {
2749: if($b_tok->[0] eq 'S') { # start tag
2750: # get content of the tag until matching end tag
2751: # get all text upto the matching tag
2752: # and push the content into @randomlist
2753: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
2754: $b_parser);
2755: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
2756: push(@randomlist,$list_item);
2757: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
2758: # $list_item</b>";
2759: }
2760: if($b_tok->[0] eq 'T') { # text
2761: # what to do with text in between tags?
2762: # print "<b>TEXT $b_tok->[1]</b><br />";
2763: }
2764: # if($b_tok->[0] eq 'E') { # end tag, should not happen
2765: # print "<b>END-TAG $b_tok->[1]</b><br />";
2766: # }
2767: }
1.303 albertel 2768: if (@randomlist) {
2769: my @idx_arr = (0 .. $#randomlist);
1.512.2.14 raeburn 2770: if ($env{'form.code_for_randomlist'}) {
2771: &Apache::structuretags::shuffle(\@idx_arr,$target);
2772: undef($env{'form.code_for_randomlist'});
2773: } else {
2774: &Apache::structuretags::shuffle(\@idx_arr);
2775: }
1.303 albertel 2776: my $bodytext = '';
2777: my $show=$#randomlist;
2778: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
2779: $showarg--;
2780: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439 raeburn 2781: if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
2782: my @currlist;
2783: my $part = $Apache::inputtags::part;
2784: if ($part ne '') {
2785: if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
2786: my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
2787: if (!(grep(/^\Q$part\E$/,@currlist))) {
2788: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
2789: }
2790: } else {
2791: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
2792: }
2793: }
2794: }
1.512.2.9 raeburn 2795: for my $i (0 .. $show) {
2796: $bodytext .= "$randomlist[ $idx_arr[$i] ]";
1.303 albertel 2797: }
2798: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 2799: }
2800: } elsif ($target eq 'edit' ) {
2801: $result .=&Apache::edit::tag_start($target,$token);
2802: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
2803: $token,5);
2804: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2805: } elsif ($target eq 'modified' ) {
2806: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2807: $safeeval,'show');
2808: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2809: }
2810: return $result;
1.7 tsai 2811: }
2812:
2813: sub shuffle {
1.512.2.14 raeburn 2814: my ($a,$target) = @_;
1.7 tsai 2815: my $i;
1.303 albertel 2816: if (ref($a) eq 'ARRAY' && @$a) {
1.512.2.14 raeburn 2817: &Apache::response::pushrandomnumber(undef,$target);
1.159 albertel 2818: for($i=@$a;--$i;) {
2819: my $j=int(&Math::Random::random_uniform() * ($i+1));
2820: next if $i == $j;
2821: @$a[$i,$j] = @$a[$j,$i];
2822: }
1.251 albertel 2823: &Apache::response::poprandomnumber();
1.7 tsai 2824: }
1.6 tsai 2825: }
2826:
2827: sub end_randomlist {
1.159 albertel 2828: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2829: my $result;
2830: if ($target eq 'edit' ) {
2831: $result=&Apache::edit::tag_end($target,$token,
2832: 'End Randomly Parsed Block');
2833: }
2834: return $result;
1.6 tsai 2835: }
2836:
1.283 albertel 2837: sub ordered_show_check {
2838: my $last_part=$Apache::inputtags::partlist[-2];
2839: my $in_order=
2840: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
2841: my $in_order_show=1;
2842: if ($last_part ne '0' && lc($in_order) eq 'yes') {
2843: $in_order_show=&Apache::response::check_status($last_part);
2844: }
2845: return $in_order_show;
2846: }
2847:
1.469 www 2848:
2849: sub start_startpartmarker {
2850: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2851: my $result='';
2852: if ($target eq 'edit') {
2853: $result=&Apache::edit::tag_start($target,$token);
2854: $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
2855: $result.=&Apache::edit::end_table();
2856:
2857: }
2858: return $result;
2859: }
2860:
2861: sub end_startpartmarker {
2862: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2863: my @result;
2864: if ($target eq 'edit') { $result[1]='no'; }
2865: return @result;
2866: }
2867:
2868: sub start_endpartmarker {
2869: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2870: my $result='';
2871: if ($target eq 'edit') {
2872: $result=&Apache::edit::tag_start($target,$token);
2873: $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
2874: $result.=&Apache::edit::end_table();
2875:
2876: }
2877: return $result;
2878: }
2879:
2880: sub end_endpartmarker {
2881: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2882: my @result;
2883: if ($target eq 'edit') { $result[1]='no'; }
2884: return @result;
2885: }
2886:
2887:
2888:
2889:
2890:
1.11 albertel 2891: sub start_part {
1.326 albertel 2892: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 2893: if (!$Apache::lonxml::metamode) {
2894: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
2895: # duedates.
2896: }
1.159 albertel 2897: my $result='';
1.386 albertel 2898: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 2899: $Apache::inputtags::part=$id;
1.177 albertel 2900: push(@Apache::inputtags::partlist,$id);
1.512.2.10 raeburn 2901: $Apache::inputtags::leniency='';
1.177 albertel 2902: @Apache::inputtags::response=();
1.159 albertel 2903: @Apache::inputtags::previous=();
2904: @Apache::inputtags::previous_version=();
1.405 albertel 2905: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 2906: &Apache::response::reset_params();
2907:
1.159 albertel 2908: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 2909: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
2910: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.512.2.9 raeburn 2911: if ($Apache::lonhomework::type eq 'randomizetry') {
2912: my $rndseed=&setup_rndseed($safeeval,$target);
2913: if (($target eq 'grade') && &Apache::response::submitted()) {
2914: $Apache::lonhomework::results{"resource.$id.rndseed"}=$rndseed;
2915: }
2916: } elsif (($target eq 'grade') && &Apache::response::submitted()) {
2917: $Apache::lonhomework::results{"resource.$id.rndseed"}=$Apache::lonhomework::rawrndseed;
2918: }
1.283 albertel 2919: my $in_order_show=&ordered_show_check();
1.214 albertel 2920: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 2921: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 2922: &Apache::run::run($expression,$safeeval);
1.159 albertel 2923:
2924: if ($target eq 'meta') {
1.224 www 2925: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
2926: return &Apache::response::mandatory_part_meta.
2927: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 2928: } elsif ($target eq 'web' || $target eq 'grade' ||
2929: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 2930: if ($hidden || !$in_order_show) {
1.326 albertel 2931: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 2932: } else {
2933: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
2934: push (@Apache::inputtags::status,$status);
2935: my $expression='$external::datestatus="'.$status.'";';
2936: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
2937: &Apache::run::run($expression,$safeeval);
1.284 albertel 2938: if ($env{'request.state'} eq 'construct') {
1.241 albertel 2939: &set_problem_state($Apache::inputtags::part);
1.240 albertel 2940: }
1.216 albertel 2941: if (( $status eq 'CLOSED' ) ||
2942: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 2943: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 2944: ( $status eq 'BANNED') ||
2945: ( $status eq 'UNAVAILABLE') ||
2946: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 2947: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
2948: $style);
1.159 albertel 2949: if ( $target eq "web" ) {
1.211 albertel 2950: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 2951: } elsif ( $target eq 'tex' ) {
1.284 albertel 2952: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 2953: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 2954: } else {
1.211 albertel 2955: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 2956: }
1.159 albertel 2957: }
2958: } else {
2959: if ($target eq 'tex') {
1.284 albertel 2960: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 2961: if ($$tagstack[-2] eq 'td') {
1.388 foxr 2962: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 2963: } else {
2964: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
2965: }
1.195 sakharuk 2966: }
1.159 albertel 2967: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 2968: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9 raeburn 2969: my @allkeys = split(/,/,$allkeys);
1.222 sakharuk 2970: my $allow_print_points = 0;
2971: foreach my $partial_key (@allkeys) {
1.230 albertel 2972: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 2973: if ($1 ne '0') {$allow_print_points=1;}
2974: }
2975: }
1.275 albertel 2976: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
2977: if (defined($maxtries) && $maxtries < 0) {
2978: $allow_print_points=0;
2979: }
1.302 albertel 2980: if (lc($env{'course.'.$env{'request.course.id'}.
2981: '.disableexampointprint'}) eq 'yes') {
2982: $allow_print_points=0;
2983: }
1.463 foxr 2984: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) {
1.492 christia 2985: $result .= '\vskip 10mm\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2986:
2987: }
1.233 www 2988: } elsif ($target eq 'web') {
1.479 raeburn 2989: if ($status eq 'CAN_ANSWER') {
2990: my $problemstatus = &get_problem_status($Apache::inputtags::part);
2991: my $num = scalar(@Apache::inputtags::partlist)-1;
1.512.2.21 raeburn 2992: if ((($Apache::lonhomework::default_type eq 'randomizetry') ||
2993: ($Apache::lonhomework::randomizetrypart)) &&
2994: ($Apache::lonhomework::type ne 'randomizetry')) {
2995: $result .= &randomizetry_part_header($problemstatus,'none',$num);
2996: } elsif ($Apache::lonhomework::type eq 'randomizetry') {
2997: $Apache::lonhomework::randomizetrypart = 1;
2998: my $reqtries = &Apache::lonnet::EXT("resource.$id.randomizeontries");
1.479 raeburn 2999: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
3000: }
3001: }
1.475 raeburn 3002: $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159 albertel 3003: }
3004: }
3005: }
3006: } elsif ($target eq 'edit') {
3007: $result.=&Apache::edit::tag_start($target,$token);
3008: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
3009: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 3010: ' '.
3011: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 3012: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
3013: } elsif ($target eq 'modified') {
3014: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 3015: $safeeval,'id','display');
1.159 albertel 3016: if ($constructtag) {
1.225 albertel 3017: #limiting ids to only letters numbers, and space
1.224 www 3018: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 3019: $result = &Apache::edit::rebuild_tag($token);
3020: }
3021: }
3022: return $result;
1.11 albertel 3023: }
3024:
3025: sub end_part {
1.159 albertel 3026: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3027: &Apache::lonxml::debug("in end_part $target ");
3028: my $status=$Apache::inputtags::status['-1'];
3029: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 3030: my $in_order_show=&ordered_show_check();
1.321 albertel 3031: my $result;
3032: if (!$Apache::lonxml::metamode) {
3033: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 3034: $Apache::lonxml::post_evaluate=0;
1.321 albertel 3035: }
1.312 albertel 3036: if ($target eq 'grade') {
1.249 albertel 3037: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 3038: !$hidden && $in_order_show) {
1.311 foxr 3039: $result.=&Apache::inputtags::grade;
1.249 albertel 3040: } else {
3041: # move any submission data to .hidden
3042: &Apache::inputtags::hidealldata($Apache::inputtags::part);
3043: }
1.283 albertel 3044: } elsif (($target eq 'web' || $target eq 'tex') &&
3045: !$hidden && $in_order_show) {
1.159 albertel 3046: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
3047: $target);
1.490 raeburn 3048: if (($Apache::lonhomework::type eq 'exam' && $target eq 'tex') ||
3049: ($env{'form.grade_imsexport'})) {
1.212 albertel 3050: $gradestatus='';
3051: }
1.311 foxr 3052: $result.=$gradestatus;
1.512.2.24.2. (raeburn 3053:): if ($$tagstack[-2] eq 'td' and $target eq 'tex') {
3054:): if (not $env{'form.problem_split'}=~/yes/) {
3055:): $result.='\end{minipage}';
3056:): }
3057:): }
1.181 albertel 3058: } elsif ($target eq 'edit') {
1.311 foxr 3059: $result.=&Apache::edit::end_table();
1.322 albertel 3060: } elsif ($target eq 'modified') {
3061: $result .= $token->[2];
1.159 albertel 3062: }
3063: pop @Apache::inputtags::status;
3064: $Apache::inputtags::part='';
1.512.2.10 raeburn 3065: $Apache::inputtags::leniency='';
1.295 albertel 3066: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 3067: return $result;
1.11 albertel 3068: }
1.1 albertel 3069:
1.25 albertel 3070: sub start_preduedate {
1.326 albertel 3071: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 3072: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3073: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 3074: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 3075: if (!$Apache::lonhomework::scantronmode &&
3076: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 3077: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
3078: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 3079: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 3080: }
1.24 albertel 3081: }
1.159 albertel 3082: return '';
1.24 albertel 3083: }
3084:
1.25 albertel 3085: sub end_preduedate {
1.159 albertel 3086: return '';
1.24 albertel 3087: }
3088:
1.369 foxr 3089: # In all the modes where <postanswerdate> text is
3090: # displayable, all we do is eat up the text between the start/stop
3091: # tags if the conditions are not right to display it.
1.25 albertel 3092: sub start_postanswerdate {
1.326 albertel 3093: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 3094: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
3095: &Apache::lonnet::allowed('pav',
3096: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 3097: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 3098: $target eq 'tex' ) {
1.300 albertel 3099: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 3100: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
3101: (($target eq 'tex') && !$pav)) {
1.326 albertel 3102: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 3103: }
3104: }
3105: return '';
1.24 albertel 3106: }
3107:
1.25 albertel 3108: sub end_postanswerdate {
1.159 albertel 3109: return '';
1.24 albertel 3110: }
3111:
1.25 albertel 3112: sub start_notsolved {
1.326 albertel 3113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3114: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 3115: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 3116: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
3117: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 3118: if ($gradestatus =~ /^correct/ &&
3119: &Apache::response::show_answer()) {
1.159 albertel 3120: &Apache::lonxml::debug("skipping");
1.326 albertel 3121: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 3122: }
1.24 albertel 3123: }
1.159 albertel 3124: return '';
1.24 albertel 3125: }
3126:
1.25 albertel 3127: sub end_notsolved {
1.159 albertel 3128: return '';
1.24 albertel 3129: }
3130:
3131: sub start_solved {
1.326 albertel 3132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3133: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3134: $target eq 'tex') {
3135: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 3136: if ($gradestatus !~ /^correct/ ||
3137: !&Apache::response::show_answer()) {
1.326 albertel 3138: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 3139: }
1.24 albertel 3140: }
1.159 albertel 3141: return '';
1.24 albertel 3142: }
3143:
3144: sub end_solved {
1.248 albertel 3145: return '';
3146: }
3147:
3148: sub start_problemtype {
1.326 albertel 3149: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 3150: my $result;
1.339 albertel 3151: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3152: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 3153: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
3154: if (!defined($mode)) { $mode='show'; }
3155: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
3156: my $found=0;
3157: foreach my $type (split(',',$for)) {
3158: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
3159: }
3160: if ($mode eq 'show' && !$found) {
1.326 albertel 3161: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 3162: }
3163: if ($mode eq 'hide' && $found) {
1.326 albertel 3164: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 3165: }
3166: } elsif ($target eq 'edit') {
3167: $result .=&Apache::edit::tag_start($target,$token);
3168: $result.=&Apache::edit::select_arg('Mode:','mode',
3169: [['show','Show'],
3170: ['hide','Hide']]
3171: ,$token);
3172: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1.512.2.2 raeburn 3173: [ ['exam','Exam/Quiz Problem'],
1.248 albertel 3174: ['survey','Survey'],
1.465 raeburn 3175: ['surveycred','Survey (with credit)'],
3176: ['anonsurvey','Anonymous Survey'],
3177: ['anonsurveycred','Anonymous Survey (with credit)'],
1.428 raeburn 3178: ['problem','Homework Problem'],
1.479 raeburn 3179: ['practice','Practice Problem'],
3180: ['randomizetry','New Randomization Each Try'] ]
1.248 albertel 3181: ,$token);
3182: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3183: } elsif ($target eq 'modified') {
3184: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3185: $safeeval,'mode','for');
3186: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3187: }
3188: return $result;
3189: }
3190:
3191: sub end_problemtype {
1.159 albertel 3192: return '';
1.24 albertel 3193: }
1.34 albertel 3194:
3195: sub start_startouttext {
1.159 albertel 3196: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3197: my @result=(''.'');
3198: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 3199:
3200: my $nesting =
3201: &Apache::lonxml::set_state('outtext',
3202: &Apache::lonxml::get_state('outtext')+1);
3203: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
3204: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
3205: }
1.159 albertel 3206: return (@result);
1.34 albertel 3207: }
1.159 albertel 3208:
1.34 albertel 3209: sub end_startouttext {
1.326 albertel 3210: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3211: my $result='';
3212: my $text='';
3213: if ($target eq 'edit') {
1.424 foxr 3214: my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326 albertel 3215: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.512.2.11 raeburn 3216: $result.=&Apache::edit::start_table($token)."<tr><td>".&Apache::loncommon::insert_folding_button()
3217: ." ".&mt('Text Block')."</td>"
1.438 bisitz 3218: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437 raeburn 3219: .&Apache::edit::deletelist($target,$token)
1.474 raeburn 3220: .'</span></td>'
1.512.2.12 raeburn 3221: .'<td><span id="math_'.$areaid.'">';
3222: if ($env{'environment.nocodemirror'}) {
3223: $result.=&Apache::lonhtmlcommon::dragmath_button($areaid,1);
3224: } else {
3225: $result.=' ';
3226: }
3227: $result.='</span></td>'
1.474 raeburn 3228: .'<td>'
3229: .&Apache::edit::insertlist($target,$token)
3230: .'</td>'
1.512.2.5 raeburn 3231: .'<td class="LC_edit_problem_latexhelper">' .
1.474 raeburn 3232: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 3233: &Apache::edit::end_row().
1.362 albertel 3234: &Apache::edit::start_spanning_row()."\n".
1.255 www 3235: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 3236: }
3237: if ($target eq 'modified') {
1.219 albertel 3238: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 3239: }
3240: if ($target eq 'tex') {
3241: $result .= '\noindent ';
3242: }
3243: return $result;
1.34 albertel 3244: }
1.159 albertel 3245:
1.34 albertel 3246: sub start_endouttext {
1.159 albertel 3247: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3248: my $result='';
3249: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
3250: if ($target eq "modified") {
3251: $result='<endouttext />'.
1.377 albertel 3252: &Apache::edit::handle_insertafter('startouttext');
3253: }
1.404 albertel 3254:
3255: my $nesting =
3256: &Apache::lonxml::set_state('outtext',
3257: &Apache::lonxml::get_state('outtext')-1);
3258: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
3259: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
3260: &Apache::lonxml::set_state('outtext', 0);
3261: }
1.159 albertel 3262: return $result;
1.34 albertel 3263: }
1.159 albertel 3264:
1.34 albertel 3265: sub end_endouttext {
1.159 albertel 3266: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3267: my @result=('','');
3268: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
3269: return (@result);
1.34 albertel 3270: }
1.159 albertel 3271:
1.45 albertel 3272: sub delete_startouttext {
1.326 albertel 3273: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
3274: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 3275: my $text=$$parser['-1']->get_text("/endouttext");
3276: my $ntoken=$$parser['-1']->get_token();
3277: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
3278: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
3279: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
3280: # they did the last time round
3281: &Apache::lonxml::increasedepth($ntoken);
3282: &Apache::lonxml::decreasedepth($ntoken);
3283: return 1;
1.193 www 3284: }
3285:
3286: sub start_simpleeditbutton {
3287: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3288: my $result='';
1.284 albertel 3289: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 3290: ($target eq 'web') &&
1.330 albertel 3291: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 3292: my $url=$env{'request.noversionuri'};
1.193 www 3293: $url=~s/\?.*$//;
1.367 albertel 3294: my ($symb) = &Apache::lonnet::whichuser();
1.451 bisitz 3295: # Warning makes more sense and is more important on edit screen
1.442 bisitz 3296: # $result='<p class="LC_warning">'
3297: # .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
3298: # .&Apache::loncommon::help_open_topic('Caching')
3299: # .'</p>';
1.486 www 3300: $result.=&Apache::loncommon::head_subbox(
3301: &Apache::lonhtmlcommon::start_funclist()
1.451 bisitz 3302: .&Apache::lonhtmlcommon::add_item_funclist(
3303: '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
3304: .&mt('Edit').'</a>')
1.486 www 3305: .&Apache::lonhtmlcommon::end_funclist());
1.442 bisitz 3306:
1.193 www 3307: }
3308: return $result;
3309: }
3310:
3311: sub end_simpleeditbutton {
3312: return '';
1.45 albertel 3313: }
1.34 albertel 3314:
1.428 raeburn 3315: sub practice_problem_header {
3316: return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
3317: '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
3318: '</span>';
3319: }
3320:
1.479 raeburn 3321: sub randomizetry_problem_header {
1.512.2.21 raeburn 3322: my ($problemstatus,$reqtries,$symb) = @_;
1.479 raeburn 3323: my ($header,$text);
3324: if ($reqtries > 1) {
3325: $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
3326: if (($problemstatus eq 'no') ||
3327: ($problemstatus eq 'no_feedback_ever')) {
3328: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
3329: } else {
3330: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
3331: }
3332: } else {
3333: $header = &mt('New Problem Variation Each Try');
3334: if (($problemstatus eq 'no') ||
3335: ($problemstatus eq 'no_feedback_ever')) {
3336: $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
3337:
3338: } else {
3339: $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
3340: }
3341: }
1.512.2.21 raeburn 3342: if (($env{'request.state'} eq "construct") || ($symb eq '')) {
3343: return '<div class="LC_info" id="LC_randomizetry_header" style="display:none">'.
3344: '<h3>'.$header.'</h3><span class="LC_info">'.$text.'</span><hr /></div>';
3345: } else {
3346: return '<h3 class="LC_info">'.$header.'</h3>'.
3347: '<span class="LC_info">'.$text.'</span><hr />';
3348: }
1.479 raeburn 3349: }
3350:
3351: sub randomizetry_part_header {
3352: my ($problemstatus,$reqtries,$num) = @_;
3353: my ($header,$text);
3354: if ($reqtries eq 'none') {
3355: $header = &mt('No Question Variation');
1.512.2.23 raeburn 3356: $text = &mt('For this question there will be no new variation after a try.');
1.479 raeburn 3357: } elsif ($reqtries > 1) {
3358: $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
3359: if (($problemstatus eq 'no') ||
3360: ($problemstatus eq 'no_feedback_ever')) {
3361: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
3362: } else {
3363: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
3364: }
3365: } else {
3366: $header = &mt('New Question Variation For Each Try');
3367: if (($problemstatus eq 'no') ||
3368: ($problemstatus eq 'no_feedback_ever')) {
3369: $text = &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
3370: } else {
3371: $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
3372: }
3373: }
3374: my $output;
3375: if ($num > 1) {
3376: $output .= '<hr />';
3377: }
3378: $output .= '<span class="LC_info"><h4>'.$header.'</h4></span>'.
3379: '<span class="LC_info">'.$text.'</span><br /><br />';
3380: return $output;
3381: }
3382:
1.1 albertel 3383: 1;
3384: __END__
1.435 jms 3385:
3386: =pod
3387:
3388: =back
3389:
3390: =cut
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