Annotation of loncom/homework/structuretags.pm, revision 1.512.2.24.2.8
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 1.512.2.24.2.7 2023/12/29 23:47:02 raeburn Exp $
1.74 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.254 www 28: ###
1.54 www 29:
1.435 jms 30: =pod
31:
32: =head1 NAME
33:
34: Apache::structuretags
35:
36: =head1 SYNOPSIS
37:
38:
39: This is part of the LearningOnline Network with CAPA project
40: described at http://www.lon-capa.org.
41:
42:
43: =head1 NOTABLE SUBROUTINES
44:
45: =over
46:
47: =item
48:
49: =back
50:
51: =cut
52:
1.133 sakharuk 53:
1.1 albertel 54: package Apache::structuretags;
55:
56: use strict;
57: use Apache::lonnet;
1.101 sakharuk 58: use Apache::File();
1.147 www 59: use Apache::lonmenu;
1.210 albertel 60: use Apache::lonlocal;
1.231 sakharuk 61: use Apache::lonxml;
1.434 foxr 62: use Apache::londefdef;
1.338 albertel 63: use Apache::lonenc();
1.500 foxr 64: use Apache::loncommon();
1.512.2.24.2. (raeburn 65:): use Apache::lonnavmaps;
1.267 albertel 66: use Time::HiRes qw( gettimeofday tv_interval );
1.512.2.24 raeburn 67: use HTML::Entities();
1.356 www 68: use lib '/home/httpd/lib/perl/';
69: use LONCAPA;
70:
1.78 harris41 71: BEGIN {
1.469 www 72: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','translated','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startpartmarker','startouttext','endpartmarker','endouttext','simpleeditbutton','definetag'));
1.10 albertel 73: }
74:
1.500 foxr 75:
76: #---------------------------------------------------------------------------------
77: #
78: # This section of code deals with hyphenation management.
79: # We must do three things:
80: # - keep track fo the desired languages to alter the header.
81: # - provide hyphenation selection as needed by each language that appears in the
82: # text.
83: # - Provide the header text needed to make available the desired hyphenations.
84: #
85: #
86:
87: # Hash whose keys are the languages encountered in the document/resource.
88: #
89:
90: my %languages_required;
91: ##
92: # Given a language selection as input returns a chunk of LaTeX that
93: # selects the required hyphenator.
94: #
95: # @param language - the language being selected.
96: # @return string
97: # @retval The LaTeX needed to select the hyphenation appropriate to the language.
98: #
99: sub select_hyphenation {
100: my $language = shift;
101:
102: $language = &Apache::loncommon::latexlanguage($language); # Translate -> latex language.
103:
104: # If there is no latex language there's not much we can do:
105:
106: if ($language) {
107: &require_language($language);
108: my $babel_hyphenation = "\\selectlanguage{$language}";
109:
110: return $babel_hyphenation;
111: } else {
112: return '';
113: }
114: }
115: ##
116: # Selects hyphenation based on the current problem metadata.
117: # This requires that
118: # - There is a language metadata item set for the problem.
119: # - The language has a latex/babel hyphenation.
120: #
121: # @note: Uses &Apache::lonxml::request to locate the Uri associated with
122: # this problem.
123: # @return string (possibly empty).
124: # @retval If not empty an appropriate \selectlanguage{} directive.
125: #
126: sub select_metadata_hyphenation {
127: my $uri = $Apache::lonxml::request->uri;
128: my $language = &Apache::lonnet::metadata($uri, 'language');
129: my $latex_language = &Apache::loncommon::latexhyphenation($language);
130: if ($latex_language) {
131: return '\selectlanguage{'.$latex_language."}\n";
132: }
133: return ''; # no latex hyphenation or no lang metadata.
134: }
135:
136:
137: ##
138: # Clears the set of languages required by the document being rendered.
139: #
140: sub clear_required_languages {
141: %languages_required = ();
142: }
143: ##
144: # Allows an external client of this module to register a need for a language:
145: #
146: # @param LaTeX language required:
147: #
148: sub require_language {
149: my $language = shift;
150: $languages_required{$language} = 1;
151: }
152:
153: ##
154: # Provides the header for babel that indicates the languages
155: # the document requires.
156: # @return string
157: # @retval \usepackage[lang1,lang2...]{babel}
158: # @retval '' if there are no languages_required.
159: sub languages_header {
160: my $header ='';
161: my @languages = (keys(%languages_required));
162:
163: # Only generate the header if there are languages:
164:
165: if (scalar @languages) {
166: my $language_list = join(',', (@languages));
167: $header = '\usepackage['.$language_list."]{babel}\n";
168: }
169: return $header;
170: }
171:
172: #----------------------------------------------------------------------------------
173:
1.10 albertel 174: sub start_web {
1.326 albertel 175: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383 albertel 176: if ($target ne 'edit' && $target ne 'modified') {
177: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
178: if ($target eq 'web' || $target eq 'webgrade') {
179: return $bodytext;
180: }
181: } elsif ($target eq "edit" ) {
182: my $bodytext =
183: &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
184: my $result = &Apache::edit::tag_start($target,$token);
185: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
186: return $result;
187: } elsif ( $target eq "modified" ) {
188: return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159 albertel 189: }
190: return '';
1.10 albertel 191: }
192:
193: sub end_web {
1.44 ng 194: return '';
1.10 albertel 195: }
196:
197: sub start_tex {
1.326 albertel 198: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198 sakharuk 199: my $result='';
1.383 albertel 200: if ($target ne 'edit' && $target ne 'modified') {
201: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
202: if ($target eq 'tex') {
1.434 foxr 203:
204: # If inside a table, occurrences of \\ must be removed;
205: # else the table blows up.
206:
207: if (&Apache::londefdef::is_inside_of($tagstack, "table")) {
208: $bodytext =~ s/\\\\//g;
209: }
1.432 foxr 210: return $bodytext.'{}';
1.383 albertel 211: }
212: } elsif ($target eq "edit" ) {
213: my $bodytext =
214: &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
215: my $result = &Apache::edit::tag_start($target,$token);
216: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
217: return $result;
218: } elsif ( $target eq "modified" ) {
219: return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159 albertel 220: }
1.198 sakharuk 221: return $result;;
1.10 albertel 222: }
223:
224: sub end_tex {
1.44 ng 225: return '';
1.9 albertel 226: }
227:
1.400 albertel 228: sub homework_js {
1.512.2.9 raeburn 229: my ($postsubmit,$timeout);
230: if (($env{'request.course.id'}) && ($env{'request.state'} ne 'construct')) {
231: my $crstype;
232: if (&Apache::loncommon::course_type() eq 'Community') {
233: $crstype = 'community';
234: } else {
235: if ($env{'course.'.$env{'request.course.id'}.'.internal.coursecode'}) {
236: $crstype = 'official';
237: } elsif ($env{'course.'.$env{'request.course.id'}.'.internal.textbook'}) {
238: $crstype = 'textbook';
239: } else {
240: $crstype = 'unofficial';
241: }
242: }
243: $postsubmit = $env{'course.'.$env{'request.course.id'}.'.internal.postsubmit'};
244: if ($postsubmit eq '') {
245: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
246: $postsubmit = $domdefs{'postsubmit'};
247: unless ($postsubmit eq 'off') {
248: $timeout = $domdefs{$crstype.'postsubtimeout'};
249: }
250: } elsif ($postsubmit eq '0') {
251: $postsubmit = 'off';
252: } elsif ($postsubmit eq '1') {
253: $postsubmit = 'on';
254: $timeout = $env{'course.'.$env{'request.course.id'}.'.internal.postsubtimeout'};
255: if ($timeout eq '') {
256: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
257: $timeout = $domdefs{$crstype.'postsubtimeout'};
258: }
259: }
260: if ($timeout eq '') {
261: $timeout = 60;
262: }
263: } else {
264: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'request.role.domain'});
265: $postsubmit = $domdefs{'postsubmit'};
266: unless ($postsubmit eq 'off') {
267: $timeout = 60;
268: }
269: }
270: my $jstimeout = 0;
271: if ($timeout) {
272: $jstimeout = 1000 * $timeout;
273: }
1.400 albertel 274: return &Apache::loncommon::resize_textarea_js().
1.512.2.11 raeburn 275: &Apache::loncommon::colorfuleditor_js().
1.512.2.24.2. (raeburn 276:): &Apache::lonxml::setmode_javascript().
1.512.2.9 raeburn 277: <<"JS";
1.400 albertel 278: <script type="text/javascript">
1.483 raeburn 279: // <![CDATA[
1.494 raeburn 280: function setSubmittedPart (part,prefix) {
281: if (typeof(prefix) == 'undefined') {
282: this.document.lonhomework.submitted.value="part_"+part;
283: } else {
284: for (var i=0;i<this.document.lonhomework.elements.length;i++) {
285: if (this.document.lonhomework.elements[i].name == prefix+'submitted') {
286: this.document.lonhomework.elements[i].value="part_"+part;
287: }
288: }
289: }
1.400 albertel 290: }
291:
1.512.2.9 raeburn 292: function disableAutoComplete (id) {
293: var field = document.getElementById(id);
294: if (field != null && field != undefined){
295: if ('autocomplete' in field) {
296: field.autocomplete = "off";
297: } else {
298: field.setAttribute("autocomplete", "off");
299: }
300: }
301: }
302:
1.400 albertel 303: function image_response_click (which, e) {
304: init_geometry();
305: if (!e) { e = window.event; } //IE
306: var input_element = document.lonhomework.elements[which];
1.401 albertel 307: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 308: var token = token_element.value;
1.401 albertel 309: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 310: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
311: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
312: var click = x+':'+y;
313: input_element.value = click;
1.485 raeburn 314: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
1.400 albertel 315: }
1.512.2.9 raeburn 316:
317: var submithandled = 0;
318: var keypresshandled = 0;
319: var postsubmit = '$postsubmit';
320:
321: \$(document).ready(function(){
322: if (postsubmit != 'off') {
323: \$(document).keypress(function(event){
324: var keycode = (event.keyCode ? event.keyCode : event.which);
325: if ((keycode == '13') && (keypresshandled == 0)) {
326: if ( \$( document.activeElement ).hasClass("LC_textline") ) {
327: keypresshandled = 1;
328: var idsArray = \$( document.activeElement ).attr("id").split(/HWVAL_/);
329: if (idsArray.length) {
330: event.preventDefault();
331: var itemsArray = idsArray[1].split(/_/);
332: var buttonId = idsArray[0]+'submit_'+itemsArray[0];
333: \$("#"+buttonId).trigger("click");
334: }
335: }
336: }
337: });
338:
339: \$(document).delegate('form :submit', 'click', function( event ) {
340: if ( \$( this ).hasClass( "LC_hwk_submit" ) ) {
341: var buttonId = this.id;
342: var timeout = $jstimeout;
343: if (submithandled == 0) {
344: submithandled = 1;
345: \$( "#msg_"+buttonId ).css({"display": "inline","background-color": "#87cefa",
346: "color": "black","padding": "2px"}) ;
1.512.2.18 raeburn 347: if (( \$(this.form).attr("id") == "LC_page" ) && (\$('input[name="all_submit"]').length )) {
1.512.2.9 raeburn 348: if (buttonId != "all_submit") {
349: \$( ".LC_status_"+buttonId ).hide();
1.512.2.18 raeburn 350: }
351: if (( "#"+buttonId+"_pressed" ).length) {
352: \$( "#"+buttonId+"_pressed" ).val( "1" );
1.512.2.9 raeburn 353: }
354: } else {
355: \$( ".LC_status_"+buttonId ).hide();
356: }
357: \$(this.form).submit();
358: \$( ".LC_hwk_submit" ).prop( "disabled", true);
359: \$( ".LC_textline" ).prop( "readonly", "readonly");
360: event.preventDefault();
361:
362: if (timeout > 0) {
363: setTimeout(function(){
364: \$( "#msg_"+buttonId ).css({"display": "none"});
1.512.2.18 raeburn 365: if (( \$(this.form).attr("id") == "LC_page" ) && (\$('input[name="all_submit"]').length )) {
366: if (( "#"+buttonId+"_pressed" ).length) {
367: \$( "#"+buttonId+"_pressed" ).val( "" );
1.512.2.9 raeburn 368: }
369: }
370: \$( ".LC_hwk_submit" ).prop( "disabled", false);
371: \$( ".LC_textline" ).prop( "readonly", false);
372: submithandled = 0;
373: keypresshandled = 0;
374: }, timeout);
375: }
376: return true;
377: }
378: }
379: });
380: }
381: });
382:
1.483 raeburn 383: // ]]>
1.400 albertel 384: </script>
385: JS
386: }
387:
1.48 albertel 388: sub page_start {
1.345 albertel 389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
390: $extra_head)=@_;
1.159 albertel 391: my %found;
1.207 albertel 392: foreach my $taginside (@$tagstack) {
1.159 albertel 393: foreach my $taglookedfor ('html','body','form') {
394: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
395: }
396: }
397:
1.343 albertel 398: if ($target eq 'tex') {
399: return
400: &Apache::londefdef::start_html($target,$token,$tagstack,
401: $parstack,$parser,$safeeval);
402: }
403:
1.474 raeburn 404: $extra_head .= &homework_js().
405: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
406: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.512.2.12 raeburn 407: my %textarea_args;
408: if (($env{'request.state'} ne 'construct') ||
409: ($env{'environment.nocodemirror'})) {
410: %textarea_args = (
1.474 raeburn 411: dragmath => 'math',
412: );
1.512.2.12 raeburn 413: }
1.474 raeburn 414: $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1.425 raeburn 415: }
1.478 raeburn 416: my $is_task = ($env{'request.uri'} =~ /\.task$/);
1.512.2.9 raeburn 417: my ($needs_upload,$partlist);
1.495 raeburn 418: my ($symb)= &Apache::lonnet::whichuser();
419: my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
1.478 raeburn 420: if ($is_task) {
1.495 raeburn 421: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
1.493 raeburn 422: } else {
423: if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.uploadedfiletypes") ne '') {
1.495 raeburn 424: unless ($env{'request.state'} eq 'construct') {
425: my $navmap = Apache::lonnavmaps::navmap->new();
426: if (ref($navmap)) {
427: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 428: my $is_page;
429: if (ref($mapres)) {
430: $is_page = $mapres->is_page();
431: }
432: unless ($is_page) {
1.495 raeburn 433: $needs_upload = 1;
434: }
1.512.2.9 raeburn 435: if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
436: my $res = $navmap->getBySymb($symb);
437: if (ref($res)) {
438: $partlist = $res->parts();
439: }
440: }
1.495 raeburn 441: }
442: }
1.493 raeburn 443: } else {
444: unless ($env{'request.state'} eq 'construct') {
445: my $navmap = Apache::lonnavmaps::navmap->new();
446: if (ref($navmap)) {
1.495 raeburn 447: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 448: my $is_page;
449: if (ref($mapres)) {
450: $is_page = $mapres->is_page();
451: }
1.512.2.9 raeburn 452: if ($is_page) {
453: if ((ref($tagstack) eq 'ARRAY') && ($tagstack->[-1] eq 'problem')) {
454: my $res = $navmap->getBySymb($symb);
455: if (ref($res)) {
456: $partlist = $res->parts();
457: }
458: }
459: } else {
1.495 raeburn 460: my $res = $navmap->getBySymb($symb);
461: if (ref($res)) {
1.512.2.9 raeburn 462: $partlist = $res->parts();
1.495 raeburn 463: if (ref($partlist) eq 'ARRAY') {
464: foreach my $part (@{$partlist}) {
465: my @types = $res->responseType($part);
466: my @ids = $res->responseIds($part);
467: for (my $i=0; $i < scalar(@ids); $i++) {
468: if ($types[$i] eq 'essay') {
469: my $partid = $part.'_'.$ids[$i];
470: if (&Apache::lonnet::EXT("resource.$partid.uploadedfiletypes") ne '') {
471: $needs_upload = 1;
472: last;
473: }
1.493 raeburn 474: }
475: }
476: }
1.495 raeburn 477: }
478: }
1.493 raeburn 479: }
480: }
481: }
482: }
1.495 raeburn 483: if ($needs_upload) {
1.512.2.17 raeburn 484: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js().
485: '<script type="text/javascript" '.
486: 'src="/res/adm/includes/file_upload.js"></script>';
1.495 raeburn 487: }
1.478 raeburn 488: }
1.425 raeburn 489:
1.344 albertel 490: my %body_args;
491: if (defined($found{'html'})) {
492: $body_args{'skip_phases'}{'head'}=1;
493: } else {
1.343 albertel 494:
1.345 albertel 495: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 496:
1.379 albertel 497: $extra_head .= &Apache::londefdef::generate_css_links();
498:
1.384 albertel 499: if ($env{'request.state'} eq 'construct') {
1.343 albertel 500: $extra_head.=&Apache::edit::js_change_detection().
501: "<script type=\"text/javascript\">\n".
502: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
503: &Apache::loncommon::browser_and_searcher_javascript().
504: "\n</script>\n";
1.512.2.9 raeburn 505: if ($target eq 'edit') {
506: $extra_head .= &Apache::edit::js_update_linknum();
507: }
1.343 albertel 508: }
1.159 albertel 509: }
1.343 albertel 510:
1.446 bisitz 511: my $pageheader = '';
1.344 albertel 512: if (defined($found{'body'})) {
513: $body_args{'skip_phases'}{'body'}=1;
514: } elsif (!defined($found{'body'})
515: && $env{'request.state'} eq 'construct') {
1.343 albertel 516: if ($target eq 'web' || $target eq 'edit') {
1.512.2.3 raeburn 517: # Breadcrumbs for Authoring Space
1.450 bisitz 518: &Apache::lonhtmlcommon::clear_breadcrumbs();
519: &Apache::lonhtmlcommon::add_breadcrumb({
1.512.2.3 raeburn 520: 'text' => 'Authoring Space',
1.497 raeburn 521: 'href' => &Apache::loncommon::authorspace($env{'request.uri'}),
1.450 bisitz 522: });
1.460 droeschl 523: # breadcrumbs (and tools) will be created
524: # in start_page->bodytag->innerregister
525:
1.450 bisitz 526: # FIXME Where are we?
527: # &Apache::lonhtmlcommon::add_breadcrumb({
528: # 'text' => 'Problem Editing', # 'Problem Testing'
529: # 'href' => '',
530: # });
1.460 droeschl 531: $pageheader =&Apache::loncommon::head_subbox(
1.446 bisitz 532: &Apache::loncommon::CSTR_pageheader());
1.297 albertel 533: }
1.272 albertel 534: } elsif (!defined($found{'body'})) {
1.343 albertel 535: my %add_entries;
1.159 albertel 536: my $background=&Apache::lonxml::get_param('background',$parstack,
537: $safeeval);
1.343 albertel 538: if ($background ne '' ) {
539: $add_entries{'background'} = $background;
540: }
1.344 albertel 541:
1.290 albertel 542: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
543: $safeeval);
1.446 bisitz 544: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
1.344 albertel 545:
1.446 bisitz 546: $body_args{'bgcolor'} = $bgcolor;
547: # $body_args{'no_title'} = 1;
548: $body_args{'force_register'} = 1;
549: $body_args{'add_entries'} = \%add_entries;
1.466 droeschl 550: if ( $env{'request.state'} eq 'construct') {
1.446 bisitz 551: $body_args{'only_body'} = 1;
1.512.2.7 raeburn 552: } elsif ($target eq 'web') {
553: $body_args{'print_suppress'} = 1;
1.446 bisitz 554: }
1.344 albertel 555: }
1.365 albertel 556: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 557: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
558: \%body_args);
1.446 bisitz 559: $page_start .= $pageheader;
1.462 raeburn 560: if (!defined($found{'body'})
561: && $env{'request.state'} ne 'construct'
562: && ($target eq 'web' || $target eq 'webgrade')) {
563:
564: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
565: if ($symb eq '' && !$publicuser) {
566: $page_start .= '<p class="LC_info">'
567: .&mt('Browsing resource, all submissions are temporary.')
568: .'</p>';
1.457 bisitz 569: }
1.344 albertel 570: }
571:
1.409 albertel 572: if (!defined($found{'body'}) && $env{'request.state'} ne 'construct') {
1.343 albertel 573: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 574: }
575: my $form_tag_start;
576: if (!defined($found{'form'})) {
1.337 albertel 577: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.465 raeburn 578: my $uri = &Apache::loncommon::inhibit_menu_check(
1.455 droeschl 579: &Apache::lonenc::check_encrypt($env{'request.uri'}));
1.464 raeburn 580: $uri = &HTML::Entities::encode($uri,'<>&"');
1.327 albertel 581: $form_tag_start.=$uri.'" ';
582: if ($target eq 'edit') {
583: $form_tag_start.=&Apache::edit::form_change_detection();
584: }
1.493 raeburn 585: my ($symb,$courseid,$udom,$uname)=&Apache::lonnet::whichuser();
586: my ($path,$multiresp) =
587: &Apache::loncommon::get_turnedin_filepath($symb,$uname,$udom);
1.512.2.24.2. (raeburn 588:): if ($env{'request.user_in_effect'}) {
589:): $form_tag_start .= ' onsubmit="preventDefault();"';
590:): } elsif (($is_task) || ($needs_upload)) {
1.495 raeburn 591: $form_tag_start .= ' onsubmit="return file_submission_check(this,'."'$path','$multiresp'".');"';
1.478 raeburn 592: }
1.368 albertel 593: $form_tag_start.='>'."\n";
1.355 albertel 594:
595: if ($symb =~ /\S/) {
596: $symb=
597: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
598: $form_tag_start.=
1.368 albertel 599: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 600: }
1.159 albertel 601: }
1.512.2.9 raeburn 602: return ($page_start,$form_tag_start,$partlist);
1.105 albertel 603: }
604:
1.141 matthew 605: #use Time::HiRes();
1.105 albertel 606: sub get_resource_name {
1.159 albertel 607: my ($parstack,$safeeval)=@_;
1.388 foxr 608: my $name;
1.204 albertel 609: if (defined($Apache::lonhomework::name)) {
1.388 foxr 610: $name = $Apache::lonhomework::name;
611: } else {
612: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 613: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 614: if ($name eq '') {
615: $name=&Apache::lonnet::EXT('resource.title');
616: if ($name eq 'con_lost') { $name = ''; }
617: }
618: if ($name!~/\S+/) {
619: $name=$env{'request.uri'};
620: $name=~s-.*/([^/]+)$-$1-;
621: }
622: # The name has had html tags escaped:
623:
624: $name=~s/</</gs;
625: $name=~s/>/>/gs;
626:
627: $Apache::lonhomework::name=$name;
1.204 albertel 628: }
1.159 albertel 629: return $name;
1.105 albertel 630: }
631:
632: sub setup_rndseed {
1.512.2.9 raeburn 633: my ($safeeval,$target,$probpartlist)=@_;
1.367 albertel 634: my ($symb)=&Apache::lonnet::whichuser();
1.512.2.19 raeburn 635: my ($questiontype,$set_safespace,$rndseed,$numtries,$reqtries);
1.479 raeburn 636: if ($target eq 'analyze') {
637: $questiontype = $env{'form.grade_questiontype'};
638: }
639: unless (defined($questiontype)) {
640: $questiontype = $Apache::lonhomework::type;
641: }
1.512.2.19 raeburn 642: if ($Apache::lonhomework::type eq 'randomizetry') {
643: my $partfortries = $Apache::inputtags::part;
1.512.2.22 raeburn 644: #
645: # Where question type is "randomizetry" for a problem containing
646: # a single part (and unless type is explicitly set to not be
647: # "randomizetry" for that part), the number of tries used to
648: # determine randomization will be for that part, and randomization
649: # from calls to &random() in a perl script block before the part tag,
650: # will change based on the number of tries, and value of the
651: # "randomizeontries" parameter in effect for the single part.
652: #
1.512.2.19 raeburn 653: if (ref($probpartlist) eq 'ARRAY') {
1.512.2.22 raeburn 654: if ((@{$probpartlist} == 1) && ($probpartlist->[0] ne $partfortries)) {
655: if (&Apache::lonnet::EXT('resource.'.$probpartlist->[0].'.type') eq 'randomizetry') {
1.512.2.21 raeburn 656: $partfortries = $probpartlist->[0];
657: } else {
658: $partfortries = '';
659: }
1.512.2.19 raeburn 660: }
661: }
1.512.2.21 raeburn 662: if ($partfortries ne '') {
663: $numtries = $Apache::lonhomework::history{"resource.$partfortries.tries"};
664: $reqtries = &Apache::lonnet::EXT("resource.$partfortries.randomizeontries");
665: }
1.512.2.19 raeburn 666: }
1.512.2.24.2. (raeburn 667:): if (($env{'request.state'} eq "construct")
1.512.2.14 raeburn 668: || ($symb eq '')
669: || ($Apache::lonhomework::type eq 'practice')
1.512.2.24.2. (raeburn 670:): || ($Apache::lonhomework::history{'resource.CODE'})
1.512.2.14 raeburn 671: || (($env{'form.code_for_randomlist'}) && ($target eq 'analyze'))) {
1.316 www 672: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 673: ['rndseed']);
1.284 albertel 674: $rndseed=$env{'form.rndseed'};
1.159 albertel 675: if (!$rndseed) {
1.162 albertel 676: $rndseed=$Apache::lonhomework::history{'rndseed'};
677: if (!$rndseed) {
678: $rndseed=time;
679: }
1.512.2.14 raeburn 680: unless ($env{'form.code_for_randomlist'}) {
681: $env{'form.rndseed'}=$rndseed;
682: }
1.162 albertel 683: }
1.512.2.20 raeburn 684: if ((($env{'request.state'} eq "construct") || ($symb eq '')) &&
1.479 raeburn 685: ($Apache::lonhomework::type eq 'randomizetry')) {
1.512.2.19 raeburn 686: if ($numtries) {
687: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
688: my $inc = int($numtries/$reqtries);
689: $rndseed += $inc;
690: } else {
691: $rndseed += $numtries;
692: }
1.479 raeburn 693: }
1.480 raeburn 694: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.479 raeburn 695: }
1.374 albertel 696: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
697: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 698: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 699: srand(time);
700: $rndseed=int(rand(2100000000));
1.284 albertel 701: $env{'form.rndseed'}=$rndseed;
702: delete($env{'form.resetdata'});
703: delete($env{'form.newrandomization'});
1.159 albertel 704: }
1.488 www 705: $rndseed=~s/\,/\:/g;
706: $rndseed=~s/[^\w\d\:\-]//g;
1.489 www 707: if (defined($rndseed)) {
708: my ($c1,$c2)=split(/\:/,$rndseed);
709: unless ($c2) { $c2=0; }
710: unless (($c1==int($c1)) && ($c2==int($c2))) {
711: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
712: }
1.187 albertel 713: }
1.512.2.14 raeburn 714: if (($env{'form.code_for_randomlist'}) && ($target eq 'analyze')) {
715: $env{'form.CODE'} = $env{'form.code_for_randomlist'};
716: $rndseed=&Apache::lonnet::rndseed();
717: undef($env{'form.CODE'});
718: } elsif ($Apache::lonhomework::history{'resource.CODE'}) {
1.247 albertel 719: $rndseed=&Apache::lonnet::rndseed();
720: }
1.479 raeburn 721: $set_safespace = 1;
722: } elsif ($questiontype eq 'randomizetry') {
723: if ($target eq 'analyze') {
724: if (defined($env{'form.grade_rndseed'})) {
725: $rndseed = $env{'form.grade_rndseed'};
726: }
727: }
728: unless (($target eq 'analyze') && (defined($rndseed))) {
729: $rndseed=&Apache::lonnet::rndseed();
1.512.2.19 raeburn 730: my $curr_try = $numtries;
1.479 raeburn 731: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
732: $curr_try ++;
733: }
734: if ($rndseed =~/^(\d+)[,:](\d+)$/) {
735: $rndseed = $1;
736: }
737: if ($curr_try) {
738: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
739: my $inc = int(($curr_try-1)/$reqtries);
740: $rndseed += $inc;
741: } else {
742: $rndseed += $curr_try;
743: }
744: }
745: }
746: $set_safespace = 1;
1.512.2.9 raeburn 747: if ($target eq 'grade') {
748: $Apache::lonhomework::rawrndseed = $rndseed;
749: }
1.479 raeburn 750: }
751: if ($set_safespace) {
752: if ($safeeval) {
753: &Apache::lonxml::debug("Setting rndseed to $rndseed");
754: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
755: }
756: }
757: unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
758: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159 albertel 759: }
760: return $rndseed;
1.105 albertel 761: }
762:
1.268 albertel 763: sub remember_problem_state {
764: return '
1.284 albertel 765: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
766: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
767: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 768: }
769:
1.487 www 770: sub problem_edit_action_button {
771: my ($name,$action,$accesskey,$text,$flag)=@_;
772: my $actionscript="setmode(this.form,'$action')";
773: return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
774: ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
775: }
776:
1.423 www 777: sub problem_edit_buttons {
1.487 www 778: my ($mode)=@_;
1.512.2.11 raeburn 779: # Buttons that save
780: my $result = '<div style="float:right">';
781: if ($mode eq 'editxml') {
782: $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
783: $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
784: } else {
785: $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
786: $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
787: }
788: $result.="\n</div>\n";
1.487 www 789: # Buttons that do not save
1.512.2.11 raeburn 790: $result .= '<div>'.
1.487 www 791: &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
792: if ($mode eq 'editxml') {
793: $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
794: $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
1.512.2.11 raeburn 795: if ($env{'environment.nocodemirror'}) {
796: $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
797: }
1.487 www 798: } else {
799: $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
800: $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
801: }
802: $result.="\n</div>";
803: return $result;
1.423 www 804: }
805:
806: sub problem_edit_header {
1.512.2.11 raeburn 807: my ($mode)=@_;
808: my $return = '<input type="hidden" name="submitted" value="edit" />'.
1.487 www 809: &remember_problem_state('edit').'
1.512.2.11 raeburn 810: <div class="LC_edit_problem_header">
811: <div class="LC_edit_problem_header_title">
812: '.&mt('Problem Editing').$mode.&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
813: </div><div class="LC_edit_actionbar" id="actionbar">'.
814: '<input type="hidden" name="problemmode" value="saveedit" />'.
815: &problem_edit_buttons();
816:
817: $return .= '</div></div>' . &Apache::lonxml::message_location();
818: $return .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined.css" />
819: <script type="text/javascript" src="/adm/codemirror/codemirror-compressed-colorful.js"></script>';
820:
821: $return .= '<script type="text/javascript" src="/adm/jQuery/addons/jquery-scrolltofixed.js"></script>
822: <script type="text/javascript">
823: // unless internet explorer
824: if (!(window.navigator.appName == "Microsoft Internet Explorer" && (document.documentMode || document.compatMode))){
825: $(document).ready(
826: function() {
827: $(\'.LC_edit_actionbar\').scrollToFixed(
828: {
829: fixed: function(){
830: //$(this).find(\'.LC_edit_actionbar\').css(\'height\', \'31px\');
831: $(this).find(\'.LC_edit_actionbar\');
832: }
833: }
834: );
835: }
836: );
837: }
838: </script>
839: <table id="LC_edit_problem_colorful" border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
840: return $return;
1.105 albertel 841: }
842:
1.512.2.11 raeburn 843:
1.105 albertel 844: sub problem_edit_footer {
1.512.2.11 raeburn 845: my $resource = $env{'request.ambiguous'};
1.412 albertel 846: return '</td></tr></table><br />
847: <div class="LC_edit_problem_footer">
1.453 bisitz 848: <hr />'.
1.423 www 849: &problem_edit_buttons().'
1.459 bisitz 850: <hr style="clear:both;" />
1.512.2.11 raeburn 851: <script type="text/javascript">
852: restoreState("'.$resource.'");
853: restoreScrollPosition("'.$resource.'");
854: </script>
1.412 albertel 855: </div>
856: '.
1.342 albertel 857: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 858: }
859:
1.235 albertel 860: sub option {
861: my ($value,$name) = @_;
862: my $result ="<option value='".$value."' ";
1.284 albertel 863: if ($env{'form.'.$name} eq $value) {
1.235 albertel 864: $result.=" selected='on' ";
865: }
866: $result.='>';
867: return $result;
868: }
869:
1.105 albertel 870: sub problem_web_to_edit_header {
1.159 albertel 871: my ($rndseed)=@_;
1.406 albertel 872: my $result .= '<div class="LC_edit_problem_header">';
873:
874: if (!$Apache::lonhomework::parsing_a_task) {
875: $result .=
876: '<div class="LC_edit_problem_header_title">'.
877: &mt('Problem Testing').
878: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
879: '</div>';
880: } else {
881: $result .=
882: '<div class="LC_edit_problem_header_title">'.
883: &mt('Task Testing').
884: '</div>';
885: }
886:
1.315 albertel 887: my $show_all_foils_text =
888: ($Apache::lonhomework::parsing_a_task) ?
1.452 bisitz 889: &mt('Show All Instances')
890: : &mt('Show All Foils');
1.315 albertel 891:
1.452 bisitz 892: my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
893: .'<input type="checkbox" name="showallfoils"';
1.440 bisitz 894: if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452 bisitz 895: $show_all.= ' /> '.$show_all_foils_text
896: .'</label></span>';
1.406 albertel 897:
898:
1.384 albertel 899:
1.406 albertel 900: $result .= '<div class="LC_edit_problem_header_status_row">';
1.313 albertel 901: if (!$Apache::lonhomework::parsing_a_task) {
902: $result.="
1.406 albertel 903: <div class='LC_edit_problem_header_row1'>
904: <span class=\"LC_nobreak\">
1.405 albertel 905: ".&mt("Problem Status:")."
1.235 albertel 906: <select name='problemstate'>
1.270 albertel 907: <option value=''></option>
1.235 albertel 908: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
909: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
910: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
911: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
912: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
913: </select>
1.406 albertel 914: </span>
915: <span class=\"LC_nobreak\">
1.405 albertel 916: ".&mt("Problem Type:")."
1.235 albertel 917: <select name='problemtype'>
1.270 albertel 918: <option value=''></option>
1.512.2.1 raeburn 919: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
1.428 raeburn 920: ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242 albertel 921: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465 raeburn 922: ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
923: ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
924: ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428 raeburn 925: ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479 raeburn 926: ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235 albertel 927: </select>
1.406 albertel 928: </span>
929: $show_all
930: </div>
931: <div class='LC_edit_problem_header_row2'>
932: <span class=\"LC_nobreak\">
1.405 albertel 933: ".&mt("Feedback Mode:")."
1.235 albertel 934: <select name='problemstatus'>
935: <option value=''></option>
1.242 albertel 936: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.512.2.6 raeburn 937: ".&option('no', 'problemstatus').&mt("Don't Show Incorrect/Correct Feedback")."</option>
1.405 albertel 938: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 939: </select>
1.406 albertel 940: </span>
941: ";
942:
1.376 albertel 943: } elsif ($Apache::lonhomework::parsing_a_task) {
944: $result.="
1.406 albertel 945: <div class='LC_edit_problem_header_row1'>
946: <span class=\"LC_nobreak\">
1.405 albertel 947: ".&mt("Problem Status:")."
1.376 albertel 948: <select name='problemstate'>
949: <option value=''></option>
950: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
951: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
952: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
953: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
954: </select>
1.406 albertel 955: </span>
956: $show_all
957: ";
958: }
959: $result.='
960: <span class="LC_nobreak">
961: '.&mt('Apply style file: ').'
962: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
963: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
964: </span>
1.422 www 965: </div>
966: <div class="LC_edit_problem_header_row1">'.
967: &Apache::lonxml::renderingoptions().'
1.406 albertel 968: </div>
969: <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
970: <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
971: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
972: </div>
1.453 bisitz 973: <hr />
1.406 albertel 974: <div class="LC_edit_problem_header_randomize_row">
975: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
976: <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488 www 977: <input type="text" name="rndseed" size="24" value="'.
1.406 albertel 978: $rndseed.'"
979: onchange="javascript:document.lonhomework.changerandseed.click()" />';
980:
981: if (!$Apache::lonhomework::parsing_a_task) {
982: my $numtoanalyze=$env{'form.numtoanalyze'};
983: if (!$numtoanalyze) { $numtoanalyze=20; }
1.408 albertel 984: $result .= '<span class="LC_nobreak">'.
985: &mt('[_1] for [_2] versions.',
1.416 raeburn 986: '<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419 bisitz 987: 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
988: ,'<input type="text" name="numtoanalyze" value="'.
1.408 albertel 989: $numtoanalyze.'" size="5" />').
990: &Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
991: '</span>';
992:
1.313 albertel 993: }
1.406 albertel 994:
995: $result.='
996: </div>
1.453 bisitz 997: <hr />
1.447 bisitz 998: <div>';
1.416 raeburn 999: $result.='<input type="hidden" name="problemmode" value="view" />';
1000: $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
1001: 'onclick="javascript:setmode(this.form,'."'edit'".')" />';
1002: $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
1003: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408 albertel 1004: $result.='
1005: </div>
1.453 bisitz 1006: <hr />
1.409 albertel 1007: '.&Apache::lonxml::message_location().'
1.406 albertel 1008: </div>';
1.159 albertel 1009: return $result;
1.48 albertel 1010: }
1011:
1.65 albertel 1012: sub initialize_storage {
1.357 albertel 1013: my ($given_symb) = @_;
1.353 albertel 1014: undef(%Apache::lonhomework::results);
1015: undef(%Apache::lonhomework::history);
1.357 albertel 1016: my ($symb,$courseid,$domain,$name) =
1.367 albertel 1017: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 1018:
1019: # anonymous users (CODEd exams) have no data
1020: if ($name eq 'anonymous'
1021: && !defined($domain)) {
1022: return;
1023: }
1024:
1.333 albertel 1025: if ($env{'request.state'} eq 'construct'
1026: || $symb eq ''
1027: || $Apache::lonhomework::type eq 'practice') {
1028:
1029: my $namespace = $symb || $env{'request.uri'};
1030: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 1031: ($env{'form.resetdata'} eq &mt('New Problem Variation')
1032: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 1033: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1034: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
1035: &Apache::lonxml::debug("Attempt reset");
1036: }
1.159 albertel 1037: %Apache::lonhomework::history=
1.333 albertel 1038: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.512.2.9 raeburn 1039: my ($temp)=keys(%Apache::lonhomework::history);
1.159 albertel 1040: &Apache::lonxml::debug("Return message of $temp");
1041: } else {
1042: %Apache::lonhomework::history=
1043: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1044: }
1.353 albertel 1045:
1.159 albertel 1046: #ignore error conditions
1.512.2.9 raeburn 1047: my ($temp)=keys(%Apache::lonhomework::history);
1.159 albertel 1048: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 1049: }
1050:
1.435 jms 1051: =pod
1052:
1053: =item finalize_storage()
1054:
1.512.2.9 raeburn 1055: Stores away the result hash to a student's environment;
1056: checks form.grade_ for specific values, otherwise stores
1057: to the running user's environment.
1058:
1059: &check_correctness_changes() is called in two circumstances
1060: in which the results hash is to be stored permanently, for
1061: grading triggered by a student's submission, where feedback on
1062: correctness is to be provided to the student.
1063:
1064: 1. Immediately prior to storing the results hash
1065:
1066: To handle the case where a student's submission (and award) were
1067: stored after history was retrieved in &initialize_storage(), e.g.,
1068: if a student submitted answers in quick succession (e.g., from
1069: multiple tabs). &Apache::inputtags::hidealldata() is called for
1070: any parts with out-of-order storage (i.e., correct then incorrect,
1071: where awarded >= 1 when correct).
1072:
1073: 2. Immediately after storing the results hash
1074:
1075: To handle the case where lond on the student's homeserver returns
1076: delay:N -- where N is the number of transactions between the last
1077: retrieved in &initialize_storage() and the last stored immediately
1078: before permanent storage of the current transaction via
1079: lond::store_handler(). &Apache::grades::makehidden() is called
1080: for any parts with out-of-order storage (i.e., correct then incorrect,
1081: where awarded >= 1 when correct).
1082:
1.512.2.24.2. (raeburn 1083:): Will call &store_aggregates() to increment totals for attempts,
1.512.2.9 raeburn 1084: students, and corrects, if running user has student role.
1.512.2.24.2. (raeburn 1085:):
1.435 jms 1086: =cut
1087:
1088:
1.65 albertel 1089: sub finalize_storage {
1.357 albertel 1090: my ($given_symb) = @_;
1.159 albertel 1091: my $result;
1.289 albertel 1092: if (%Apache::lonhomework::results) {
1.323 albertel 1093: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
1094: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 1095: my ($symb,$courseid,$domain,$name) =
1.367 albertel 1096: &Apache::lonnet::whichuser($given_symb);
1.512.2.24.2. (raeburn 1097:): my ($passback,$pbscope,$pbmap,$pbsymb,$pbtype,$crsdef,$ltinum,
1098:): $ltiref,$total,$possible,$dopassback);
1.333 albertel 1099: if ($env{'request.state'} eq 'construct'
1100: || $symb eq ''
1101: || $Apache::lonhomework::type eq 'practice') {
1102: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 1103: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 1104: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 1105: $namespace,'',$domain,$name);
1.159 albertel 1106: &Apache::lonxml::debug('Construct Store return message:'.$result);
1107: } else {
1.512.2.24.2. (raeburn 1108:): my ($laststore,$checkedparts,@parts,%postcorrect,%record);
1.512.2.9 raeburn 1109: if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
1110: (!$Apache::lonhomework::scantronmode) && (!defined($env{'form.grade_symb'})) &&
1111: (!defined($env{'form.grade_courseid'}))) {
1.512.2.24.2. (raeburn 1112:): if (($env{'request.lti.login'}) || ($env{'request.deeplink.login'})) {
1113:): my ($map)=&Apache::lonnet::decode_symb($symb);
1114:): $map = &Apache::lonnet::clutter($map);
1115:): if ($env{'request.lti.login'}) {
1116:): ($passback,$pbscope,$pbmap,$pbsymb,$ltinum,$ltiref) =
1117:): &needs_lti_passback($courseid,$symb,$map);
1118:): } elsif ($env{'request.deeplink.login'}) {
1119:): ($passback,$pbscope,$pbmap,$pbsymb,$crsdef,$ltinum,$ltiref) =
1120:): &needs_linkprot_passback($courseid,$symb,$map);
1121:): }
1122:): }
1.512.2.9 raeburn 1123: if ($Apache::lonhomework::history{'version'}) {
1124: $laststore = $Apache::lonhomework::history{'version'}.'='.
1125: $Apache::lonhomework::history{'timestamp'};
1126: } else {
1127: $laststore = '0=0';
1128: }
1.512.2.24.2. (raeburn 1129:): %record = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1.512.2.9 raeburn 1130: if ($record{'version'}) {
1131: my ($newversion,$oldversion,$oldtimestamp);
1132: if ($Apache::lonhomework::history{'version'}) {
1133: $oldversion = $Apache::lonhomework::history{'version'};
1134: $oldtimestamp = $Apache::lonhomework::history{'timestamp'};
1135: } else {
1136: $oldversion = 0;
1137: $oldtimestamp = 0;
1138: }
1139: if ($record{'version'} > $oldversion) {
1140: if ($record{'timestamp'} >= $oldtimestamp) {
1141: $laststore = $record{'version'}.'='.$record{'timestamp'};
1142: $newversion = $record{'version'} + 1;
1143: $checkedparts = 1;
1144: foreach my $key (keys(%Apache::lonhomework::results)) {
1145: if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1146: my $part = $1;
1147: if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
1148: push(@parts,$part);
1149: }
1150: }
1151: }
1152: if (@parts) {
1153: my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
1154: \%record,\@parts,$newversion,
1155: $oldversion);
1156: if (@parts_to_hide) {
1157: foreach my $part (@parts_to_hide) {
1158: $postcorrect{$part} = 1;
1159: &Apache::inputtags::hidealldata($part);
1160: }
1161: }
1162: }
1163: }
1164: }
1165: }
1166: }
1.159 albertel 1167: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
1.512.2.9 raeburn 1168: $symb,$courseid,$domain,$name,$laststore);
1169: if ($result =~ /^delay\:(\d+)$/) {
1170: my $numtrans = $1;
1171: my ($oldversion) = split(/=/,$laststore);
1172: if ($numtrans) {
1173: my $newversion = $oldversion + 1 + $numtrans;
1174: my @possparts;
1175: if ($checkedparts) {
1176: foreach my $part (@parts) {
1177: unless ($postcorrect{$part}) {
1178: push(@possparts,$part);
1179: }
1180: }
1181: } else {
1182: foreach my $key (keys(%Apache::lonhomework::results)) {
1183: if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1184: my $part = $1;
1185: unless ($postcorrect{$part}) {
1186: if ($Apache::lonhomework::results{$key} eq 'incorrect_attempted') {
1187: push(@possparts,$part);
1188: }
1189: }
1190: }
1191: }
1192: }
1193: if (@possparts) {
1194: my %newrecord = &Apache::lonnet::restore($symb,$courseid,$domain,$name);
1195: my @parts_to_hide = &check_correctness_changes($symb,$courseid,$domain,$name,
1196: \%newrecord,\@possparts,$newversion,
1197: $oldversion);
1198: if (@parts_to_hide) {
1199: my $partslist = join(',',@parts_to_hide);
1200: &Apache::grades::makehidden($newversion,$partslist,\%newrecord,$symb,$domain,$name,1);
1201: }
1202: }
1203: }
1204: }
1.512.2.24.2. (raeburn 1205:): if ($passback) {
1206:): foreach my $key (keys(%Apache::lonhomework::results)) {
1207:): if ($key =~ /^resource\.([^\.]+)\.solved$/) {
1208:): my $part = $1;
1209:): if ((($Apache::lonhomework::results{$key} =~ /^correct_/) ||
1210:): ($Apache::lonhomework::results{$key} eq 'incorrect_attempted')) &&
1211:): ($Apache::lonhomework::results{"resource.$part.tries"})) {
1212:): $dopassback = 1;
1213:): last;
1214:): }
1215:): }
1216:): }
1217:): }
1218:): if (($dopassback) && ($pbscope eq 'resource') && ($pbsymb eq $symb)) {
1219:): $total = 0;
1220:): $possible = 0;
1221:): my $navmap = Apache::lonnavmaps::navmap->new();
1222:): if (ref($navmap)) {
1223:): my $res = $navmap->getBySymb($symb);
1224:): if (ref($res)) {
1225:): my $partlist = $res->parts();
1226:): if (ref($partlist) eq 'ARRAY') {
1227:): foreach my $part (@{$partlist}) {
1228:): unless (exists($Apache::lonhomework::results{"resource.$part.solved"})) {
1229:): next if ($Apache::lonhomework::record{"resource.$part.solved"} =~/^excused/);
1230:): my $weight = &Apache::lonnet::EXT("resource.$part.weight",$symb);
1231:): $possible += $weight;
1232:): if (($record{'version'}) && (exists($record{"resource.$part.awarded"}))) {
1233:): my $awarded = $record{"resource.$part.awarded"};
1234:): if ($awarded) {
1235:): $total += $weight * $awarded;
1236:): }
1237:): }
1238:): }
1239:): }
1240:): }
1241:): }
1242:): }
1243:): foreach my $key (keys(%Apache::lonhomework::results)) {
1244:): if ($key =~ /^resource\.([^\.]+)\.awarded$/) {
1245:): my $part = $1;
1246:): my $weight = &Apache::lonnet::EXT("resource.$part.weight",$symb);
1247:): $possible += $weight;
1248:): my $awarded = $Apache::lonhomework::results{$key};
1249:): if ($awarded) {
1250:): $total += $weight * $awarded;
1251:): }
1252:): }
1253:): }
1254:): }
1.159 albertel 1255: &Apache::lonxml::debug('Store return message:'.$result);
1.470 raeburn 1256: &store_aggregates($symb,$courseid);
1.512.2.24.2. (raeburn 1257:): if ($dopassback) {
1258:): my $scoreformat = 'decimal';
1259:): if (($env{'request.lti.login'}) || ($env{'request.deeplink.login'})) {
1260:): if (ref($ltiref) eq 'HASH') {
1261:): if ($ltiref->{'scoreformat'} =~ /^(decimal|ratio|percentage)$/) {
1262:): $scoreformat = $1;
1263:): }
1264:): }
1265:): }
1266:): my ($pbid,$pburl,$pbtype);
1267:): if ($env{'request.lti.login'}) {
1268:): $pbid = $env{'request.lti.passbackid'};
1269:): $pburl = $env{'request.lti.passbackurl'};
1270:): $pbtype = 'lti';
1271:): } elsif ($env{'request.deeplink.login'}) {
1272:): $pbid = $env{'request.linkprotpbid'};
1273:): $pburl = $env{'request.linkprotpburl'};
1274:): $pbtype = 'linkprot';
1275:): }
1276:): my $ltigrade = {
1277:): 'ltinum' => $ltinum,
1278:): 'lti' => $ltiref,
1279:): 'crsdef' => $crsdef,
1280:): 'cid' => $courseid,
1281:): 'uname' => $env{'user.name'},
1282:): 'udom' => $env{'user.domain'},
1283:): 'pbid' => $pbid,
1284:): 'pburl' => $pburl,
1285:): 'pbtype' => $pbtype,
1286:): 'scope' => $pbscope,
1287:): 'pbmap' => $pbmap,
1288:): 'pbsymb' => $pbsymb,
1289:): 'format' => $scoreformat,
1290:): };
1291:): if ($pbscope eq 'resource') {
1292:): $ltigrade->{'total'} = $total;
1293:): $ltigrade->{'possible'} = $possible;
1294:): }
1295:): push(@Apache::lonhomework::ltipassback,$ltigrade);
1296:): }
1.159 albertel 1297: }
1.323 albertel 1298: } else {
1299: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 1300: }
1.159 albertel 1301: return $result;
1.65 albertel 1302: }
1303:
1.512.2.24.2. (raeburn 1304:): sub needs_lti_passback {
1305:): my ($courseid,$symb,$map) = @_;
1306:): if (($env{'request.lti.passbackid'}) && ($env{'request.lti.passbackurl'})) {
1307:): if ($courseid =~ /^($LONCAPA::match_domain)_($LONCAPA::match_courseid)$/) {
1308:): my ($cdom,$cnum) = ($1,$2);
1309:): my %lti = &Apache::lonnet::get_domain_lti($cdom,'provider');
1310:): if (ref($lti{$env{'request.lti.login'}}) eq 'HASH') {
1311:): if ($lti{$env{'request.lti.login'}}{'passback'}) {
1312:): my $itemnum = $env{'request.lti.login'};
1313:): my ($ltiscope,$ltiuri,$ltisymb) =
1314:): &LONCAPA::ltiutils::lti_provider_scope($env{'request.lti.uri'},
1315:): $cdom,$cnum,1);
1316:): my ($passback,$ltimap);
1317:): if ($ltiscope eq 'resource') {
1318:): if ($ltisymb eq $symb) {
1319:): $passback = 1;
1320:): }
1321:): } elsif ($ltiscope eq 'map') {
1322:): if ($ltiuri eq $map) {
1323:): $passback = 1;
1324:): $ltimap = $map;
1325:): }
1326:): } elsif ($ltiscope eq 'course') {
1327:): if (($env{'request.lti.uri'} eq "/$cdom/$cnum") || ($env{'request.lti.uri'} eq '')) {
1328:): $passback = 1;
1329:): }
1330:): }
1331:): return ($passback,$ltiscope,$ltimap,$ltisymb,$itemnum,$lti{$itemnum});
1332:): }
1333:): }
1334:): }
1335:): }
1336:): return;
1337:): }
1338:):
1339:): sub needs_linkprot_passback {
1340:): my ($courseid,$symb,$map) = @_;
1341:): if (($env{'request.linkprotpbid'}) && ($env{'request.linkprotpburl'})) {
1342:): if ($courseid =~ /^($LONCAPA::match_domain)_($LONCAPA::match_courseid)$/) {
1343:): my ($cdom,$cnum) = ($1,$2);
1344:): my ($deeplink_symb,$deeplink_map,$deeplink,$passback);
1345:): $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
1346:): if ($deeplink_symb) {
1347:): if ($deeplink_symb =~ /\.(page|sequence)$/) {
1348:): $deeplink_map = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($deeplink_symb))[2]);
1349:): my $navmap = Apache::lonnavmaps::navmap->new();
1350:): if (ref($navmap)) {
1351:): $deeplink = $navmap->get_mapparam(undef,$deeplink_map,'0.deeplink');
1352:): }
1353:): } else {
1354:): $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$deeplink_symb);
1355:): $deeplink_map = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($deeplink_symb))[0]);
1356:): }
1357:): if (($deeplink ne '') && ($env{'request.linkprot'} ne '')) {
1358:): my ($itemid,$tinyurl) = split(/:/,$env{'request.linkprot'});
1359:): if ($itemid =~ /^(\d+)(c|d)$/) {
1360:): my ($itemnum,$itemtype) = ($1,$2);
1361:): my ($crsdef,$lti_in_use);
1362:): if ($itemtype eq 'c') {
1363:): $crsdef = 1;
1364:): my %crslti = &Apache::lonnet::get_course_lti($cnum,$cdom,'provider');
1365:): $lti_in_use = $crslti{$itemnum};
1366:): } else {
1367:): my %domlti = &Apache::lonnet::get_domain_lti($cdom,'linkprot');
1368:): $lti_in_use = $domlti{$itemnum};
1369:): }
1370:): my ($state,$others,$listed,$scope,$protect,$display,$target,$exit) = split(/,/,$deeplink);
1371:): my ($passback,$pbscope);
1372:): if ($scope eq 'res') {
1373:): if ($deeplink_symb eq $symb) {
1374:): $passback = 1;
1375:): $pbscope = 'resource';
1376:): }
1377:): } elsif ($scope eq 'map') {
1378:): if (&Apache::lonnet::clutter($deeplink_map) eq $map) {
1379:): $passback = 1;
1380:): $pbscope = 'nonrec';
1381:): }
1382:): } elsif ($scope eq 'rec') {
1383:): my @recurseup = &get_map_hierarchy($map,$env{'request.course.id'});
1384:): if (grep(/^\Q$deeplink_map\E$/,@recurseup)) {
1385:): $passback = 1;
1386:): $pbscope = 'map';
1387:): }
1388:): }
1389:): return ($passback,$pbscope,$deeplink_map,$deeplink_symb,$crsdef,$itemnum,$lti_in_use);
1390:): }
1391:): }
1392:): }
1393:): }
1394:): }
1395:): }
1396:):
1.435 jms 1397: =pod
1398:
1.512.2.9 raeburn 1399: =item check_correctness_changes()
1400:
1401: For all parts for which current results contain a solved status
1402: of "incorrect_attempted", check if there was a transaction in which
1403: solved was set to "correct_by_student" in the time since the last
1404: transaction (retrieved when &initialize_storage() was called i.e.,
1405: when &start_problem() was called), unless:
1406: (a) questiontype parameter is set to survey or anonymous survey (+/- credit)
1407: (b) problemstatus is set to no or no_feedback_ever
1408: If such a transaction exists, and did not occur after "reset status"
1409: by a user with grading privileges, then the current transaction is an
1410: example of an out-of-order transaction (i.e., incorrect occurring after
1411: correct). Accordingly, the current transaction should be hidden.
1412:
1413: =cut
1414:
1415:
1416: sub check_correctness_changes {
1417: my ($symb,$courseid,$domain,$name,$record,$parts,$newversion,$oldversion) = @_;
1418: my @parts_to_hide;
1419: unless ((ref($record) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
1420: return @parts_to_hide;
1421: }
1422: if (@{$parts}) {
1423: my $usec;
1424: if (($env{'user.name'} eq $name) && ($env{'user.domain'} eq $domain) &&
1425: ($env{'request.course.id'} eq $courseid)) {
1426: $usec = $env{'request.course.sec'};
1427: } else {
1428: $usec = &Apache::lonnet::getsection($domain,$name,$courseid);
1429: }
1430: foreach my $id (@{$parts}) {
1431: next if (($Apache::lonhomework::results{'resource.'.$id.'.type'} =~ /survey/) ||
1432: (&Apache::lonnet::EXT("resource.$id.problemstatus",$symb,
1433: $domain,$name,$usec,undef,$courseid) =~ /^no/));
1434: my $reset;
1435: for (my $i=$newversion-1; $i>=$oldversion; $i--) {
1436: if (($record->{$i.':resource.'.$id.'.regrader'}) &&
1437: ($record->{$i.':resource.'.$id.'.tries'} eq '') &&
1438: ($record->{$i.':resource.'.$id.'.award'} eq '')) {
1439: $reset = 1;
1440: } elsif (($record->{$i.":resource.$id.solved"} eq 'correct_by_student') &&
1441: ($record->{$i.":resource.$id.awarded"} >= 1)) {
1442: unless ($reset) {
1443: push(@parts_to_hide,$id);
1444: last;
1445: }
1446: }
1447: }
1448: }
1449: }
1450: return @parts_to_hide;
1451: }
1452:
1453: =pod
1454:
1.435 jms 1455: item store_aggregates()
1456:
1457: Sends hash of values to be incremented in nohist_resourcetracker.db
1458: for the course. Increments total number of attempts, unique students
1459: and corrects for each part for an instance of a problem, as appropriate.
1460:
1461: =cut
1462:
1.285 raeburn 1463: sub store_aggregates {
1464: my ($symb,$courseid) = @_;
1.479 raeburn 1465: my (%aggregate,%anoncounter,%randtrycounter);
1.286 albertel 1466: my @parts;
1.288 albertel 1467: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
1468: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 1469: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 1470: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 1471: push(@parts, $1);
1.285 raeburn 1472: }
1473: }
1.286 albertel 1474: foreach my $part (@parts) {
1.470 raeburn 1475: if ($env{'request.role'} =~/^st/) {
1476: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
1477: eq 'APPROX_ANS' ||
1478: $Apache::lonhomework::results{'resource.'.$part.'.award'}
1479: eq 'EXACT_ANS') {
1480: $aggregate{$symb."\0".$part."\0correct"} = 1;
1481: }
1482: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1483: $aggregate{$symb."\0".$part."\0users"} = 1;
1484: } else {
1485: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1486: if ($last_reset) {
1487: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1488: $aggregate{$symb."\0".$part."\0users"} = 1;
1489: }
1490: }
1491: }
1492: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 1493: }
1.470 raeburn 1494: if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') ||
1.479 raeburn 1495: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
1496: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
1497: if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
1498: $randtrycounter{$symb."\0".$part} = 1;
1499: } else {
1500: $anoncounter{$symb."\0".$part} = 1;
1501: }
1.470 raeburn 1502: my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
1503: if ($needsrelease) {
1504: my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
1505: if ($curr_required eq '') {
1.471 raeburn 1506: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 1507: } else {
1508: my ($currmajor,$currminor) = split(/\./,$curr_required);
1509: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
1510: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471 raeburn 1511: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 1512: }
1.292 raeburn 1513: }
1514: }
1.285 raeburn 1515: }
1516: }
1.512.2.9 raeburn 1517: if (keys(%aggregate) > 0) {
1.289 albertel 1518: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 1519: $cdomain,$cname);
1520: }
1.472 raeburn 1521: if (keys(%anoncounter) > 0) {
1.481 raeburn 1522: &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
1523: $cdomain,$cname);
1.472 raeburn 1524: }
1.479 raeburn 1525: if (keys(%randtrycounter) > 0) {
1.481 raeburn 1526: &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
1527: $cdomain,$cname);
1.479 raeburn 1528: }
1.292 raeburn 1529: }
1.289 albertel 1530:
1.65 albertel 1531: sub checkout_msg {
1.211 albertel 1532: my %lt=&Apache::lonlocal::texthash(
1533: 'resource'=>'The resource needs to be checked out',
1534: '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.',
1535: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
1.512.2.1 raeburn 1536: 'checkout'=>'Check out Exam for Viewing',
1537: 'checkout?'=>'Check out Exam?');
1.352 albertel 1538: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 1539: return (<<ENDCHECKOUT);
1.211 albertel 1540: <h2>$lt{'resource'}</h2>
1541: <p>$lt{'id_expln'}</p>
1.449 bisitz 1542: <p class="LC_warning">$lt{'warning'}</p>
1.444 bisitz 1543: <form name="checkout" method="post" action="$uri">
1.91 albertel 1544: <input type="hidden" name="doescheckout" value="yes" />
1.512.2.4 raeburn 1545: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onclick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 1546: </form>
1547: ENDCHECKOUT
1548: }
1549:
1.252 albertel 1550: sub firstaccess_msg {
1.253 albertel 1551: my ($time,$symb)=@_;
1.414 albertel 1552: my $result;
1553: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1554: if ($interval[1] eq 'map') {
1555: my ($map)=&Apache::lonnet::decode_symb($symb);
1556: my $foldertitle=&Apache::lonnet::gettitle($map);
1557:
1558: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.504 golterma 1559: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$foldertitle)."</h2>"
1560: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1561: ,$foldertitle,$time)."</p>";
1.414 albertel 1562: } elsif ($interval[1] eq 'course') {
1563: my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.504 golterma 1564: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.',$course)."</h2>"
1.505 golterma 1565: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
1.504 golterma 1566: ,$course,$time)."</p>";
1.414 albertel 1567: } else {
1568: my $title=&Apache::lonnet::gettitle($symb);
1.504 golterma 1569: $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.',$title)."</h2>"
1570: .'<p>'.&mt('Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
1571: ,$title,$time)."</p>";
1.414 albertel 1572: }
1.352 albertel 1573: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418 bisitz 1574: my $buttontext = &mt('Show Resource');
1575: my $timertext = &mt('Start Timer?');
1.512.2.24 raeburn 1576: my $shownsymb = &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb),'\'"<>&');
1.414 albertel 1577: $result .= (<<ENDCHECKOUT);
1.444 bisitz 1578: <form name="markaccess" method="post" action="$uri">
1.252 albertel 1579: <input type="hidden" name="markaccess" value="yes" />
1.512.2.24 raeburn 1580: <input type="hidden" name="symb" value="$shownsymb" />
1.512.2.4 raeburn 1581: <input type="button" name="accessbutton" value="$buttontext" onclick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252 albertel 1582: </form>
1583: ENDCHECKOUT
1.414 albertel 1584: return $result;
1.252 albertel 1585: }
1586:
1.204 albertel 1587: sub init_problem_globals {
1588: my ($type)=@_;
1589: #initialize globals
1.308 foxr 1590: # For problems, we start out in part 0 (outside a <part> tag).
1591: # and part 0 is used to describe the main body of the <problem>
1592: #
1.204 albertel 1593: if ($type eq 'problem') {
1594: $Apache::inputtags::part='0';
1595: @Apache::inputtags::partlist=('0');
1.405 albertel 1596: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 1597: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 1598:
1.266 albertel 1599: } elsif ($type eq 'library') {
1.204 albertel 1600: $Apache::inputtags::part='';
1601: @Apache::inputtags::partlist=();
1.405 albertel 1602: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 1603: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 1604:
1.304 albertel 1605: } elsif ($type eq 'Task') {
1606: $Apache::inputtags::part='0';
1607: @Apache::inputtags::partlist=('0');
1.405 albertel 1608: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 1609: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 1610: }
1.477 www 1611: @Apache::functionplotresponse::callscripts=();
1.204 albertel 1612: @Apache::inputtags::responselist = ();
1613: @Apache::inputtags::importlist = ();
1614: @Apache::inputtags::previous=();
1615: @Apache::inputtags::previous_version=();
1.512.2.10 raeburn 1616: $Apache::inputtags::leniency='';
1.204 albertel 1617: $Apache::structuretags::printanswer='No';
1618: @Apache::structuretags::whileconds=();
1619: @Apache::structuretags::whilebody=();
1620: @Apache::structuretags::whileline=();
1621: $Apache::lonhomework::scantronmode=0;
1.512.2.21 raeburn 1622: $Apache::lonhomework::randomizetrypart=0;
1.204 albertel 1623: undef($Apache::lonhomework::name);
1.358 albertel 1624: undef($Apache::lonhomework::default_type);
1625: undef($Apache::lonhomework::type);
1.204 albertel 1626: }
1627:
1628: sub reset_problem_globals {
1629: my ($type)=@_;
1630: undef(%Apache::lonhomework::history);
1631: undef(%Apache::lonhomework::results);
1632: undef($Apache::inputtags::part);
1.512.2.10 raeburn 1633: undef($Apache::inputtags::leniency);
1.498 raeburn 1634: if ($type eq 'Task') {
1635: undef($Apache::inputtags::slot_name);
1.512.2.9 raeburn 1636: } elsif ($type eq 'problem') {
1637: undef($Apache::lonhomework::rawrndseed);
1.498 raeburn 1638: }
1.208 albertel 1639: #don't undef this, lonhomework.pm takes care of this, we use this to
1640: #detect if we try to do 2 problems in one file
1641: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 1642: undef($Apache::lonhomework::name);
1.358 albertel 1643: undef($Apache::lonhomework::default_type);
1644: undef($Apache::lonhomework::type);
1645: undef($Apache::lonhomework::scantronmode);
1.512.2.21 raeburn 1646: undef($Apache::inputtags::randomizetrypart);
1.358 albertel 1647: undef($Apache::lonhomework::ignore_response_errors);
1.477 www 1648: undef(@Apache::functionplotresponse::callscripts);
1.405 albertel 1649: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 1650: }
1651:
1.241 albertel 1652: sub set_problem_state {
1.240 albertel 1653: my ($part)=@_;
1.284 albertel 1654: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 1655: $Apache::lonhomework::history{"resource.$part.solved"}=
1656: 'correct_by_student';
1657: }
1658: }
1659:
1.241 albertel 1660: sub get_problem_status {
1661: my ($part)=@_;
1.267 albertel 1662: my $problem_status;
1.284 albertel 1663: if ($env{'request.state'} eq 'construct' &&
1664: defined($env{'form.problemstatus'})) {
1665: $problem_status=$env{'form.problemstatus'};
1.267 albertel 1666: } else {
1667: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
1668: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 1669: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 1670: }
1671: return $problem_status;
1672: }
1673:
1.9 albertel 1674: sub start_problem {
1.326 albertel 1675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 1676:
1.311 foxr 1677: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 1678: if (!$Apache::lonxml::metamode) {
1679: &Apache::lonxml::startredirection();
1680: }
1.311 foxr 1681:
1.308 foxr 1682: # Problems don't nest and we don't allow more than one <problem> in
1683: # a .problem file.
1684: #
1.184 albertel 1685: if ( $Apache::inputtags::part ne '' ||
1686: $Apache::lonhomework::parsing_a_problem) {
1687: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 1688: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 1689: return '';
1690: }
1.184 albertel 1691:
1692: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 1693: &init_problem_globals('problem');
1.166 albertel 1694:
1.284 albertel 1695: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 1696: $Apache::lonhomework::scantronmode=1;
1697: }
1.161 albertel 1698:
1.159 albertel 1699: if ($target ne 'analyze') {
1.415 raeburn 1700: my $type = &Apache::lonnet::EXT('resource.0.type');
1701: $Apache::lonhomework::type=$type;
1.284 albertel 1702: if (($env{'request.state'} eq 'construct') &&
1.410 albertel 1703: $env{'form.problemtype'} =~ /\S/) {
1.284 albertel 1704: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 1705: }
1.332 albertel 1706: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 1707: }
1.164 albertel 1708: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 1709: my $uri=$env{'request.uri'};
1.159 albertel 1710: if ($uri=~/\.(\w+)$/) {
1711: $Apache::lonhomework::type=$1;
1712: &Apache::lonxml::debug("Using type of $1");
1713: } else {
1714: $Apache::lonhomework::type='problem';
1715: &Apache::lonxml::debug("Using default type, problem, :$uri:");
1716: }
1.87 albertel 1717: }
1.301 albertel 1718: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 1719:
1.363 albertel 1720: &initialize_storage();
1.389 albertel 1721: if ($target ne 'analyze'
1722: && $env{'request.state'} eq 'construct') {
1723: &set_problem_state('0');
1724: }
1725:
1.366 albertel 1726: if ($target eq 'web') {
1727: &Apache::lonxml::debug(" grading history ");
1728: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1729: }
1.363 albertel 1730:
1.159 albertel 1731: #added vars to the scripting enviroment
1.213 albertel 1732: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 1733: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 1734: &Apache::run::run($expression,$safeeval);
1.159 albertel 1735: my $status;
1736: my $accessmsg;
1.508 raeburn 1737: my $resource_due;
1.159 albertel 1738:
1.343 albertel 1739: my $name= &get_resource_name($parstack,$safeeval);
1.512.2.16 raeburn 1740: my ($result,$form_tag_start,$slot_name,$slot,$probpartlist,$firstaccres);
1.506 raeburn 1741:
1742: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1743: $target eq 'tex') {
1744: if ($env{'form.markaccess'}) {
1745: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1.512.2.24.2. (raeburn 1746:): my ($timelimit) = ($interval[0] =~ /^(\d+)/);
1747:): my $is_set = &Apache::lonnet::set_first_access($interval[1],$timelimit);
1.512.2.16 raeburn 1748: unless (($is_set eq 'ok') || ($is_set eq 'already_set')) {
1749: $firstaccres = $is_set;
1750: }
1.506 raeburn 1751: }
1752: }
1753:
1.354 albertel 1754: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
1755: || $target eq 'edit') {
1.512.2.9 raeburn 1756: ($result,$form_tag_start,$probpartlist) =
1.350 albertel 1757: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1758: $name);
1.512.2.24.2. (raeburn 1759:): } elsif ((($target eq 'grade') && ($Apache::lonhomework::type eq 'randomizetry')) ||
1760:): ($target eq 'answer')) {
1.512.2.9 raeburn 1761: my ($symb)= &Apache::lonnet::whichuser();
1.512.2.22 raeburn 1762: if ($symb ne '') {
1763: my $navmap = Apache::lonnavmaps::navmap->new();
1764: if (ref($navmap)) {
1765: my $res = $navmap->getBySymb($symb);
1766: if (ref($res)) {
1767: $probpartlist = $res->parts();
1768: }
1.512.2.9 raeburn 1769: }
1770: }
1.350 albertel 1771: }
1772:
1.512.2.24.2. (raeburn 1773:): if (($target eq 'web') && ($env{'request.user_in_effect'})) {
1774:): &Apache::lonxml::get_all_text("/problem",$parser,$style);
1775:): return $result;
1776:): }
1777:):
1778:): if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1779:): $target eq 'tex') {
1780:):
1781:): my ($symb)= &Apache::lonnet::whichuser();
1782:): ($status,$accessmsg,$slot_name,$slot) =
1783:): &Apache::lonhomework::check_slot_access('0','problem',$symb,$probpartlist);
1784:): push (@Apache::inputtags::status,$status);
1785:): }
1786:):
1.284 albertel 1787: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 1788:
1.479 raeburn 1789: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159 albertel 1790: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1791: $target eq 'tex') {
1.479 raeburn 1792:
1.512.2.22 raeburn 1793: my ($symb) = &Apache::lonnet::whichuser();
1.159 albertel 1794: #handle rand seed in construction space
1.512.2.22 raeburn 1795: if (($env{'request.state'} eq 'construct') || ($symb eq '')) {
1796: my $partorder=&Apache::lonnet::metadata($env{'request.uri'},'partorder');
1797: if ($partorder ne '') {
1798: @{$probpartlist} = split(/,/,$partorder);
1799: }
1800: }
1.512.2.9 raeburn 1801: my $rndseed=&setup_rndseed($safeeval,$target,$probpartlist);
1802: if (($target eq 'grade') && &Apache::response::submitted()) {
1803: if ($Apache::lonhomework::type eq 'randomizetry') {
1804: $Apache::lonhomework::results{'resource.0.rndseed'}=$rndseed;
1805: } else {
1806: my @parts;
1807: if (ref($probpartlist) eq 'ARRAY') {
1808: @parts = @{$probpartlist};
1809: }
1810: unless (@parts) {
1811: $Apache::lonhomework::results{'resource.0.rndseed'}=$Apache::lonhomework::rawrndseed;
1812: }
1813: }
1814: }
1.479 raeburn 1815:
1.333 albertel 1816: if ($env{'request.state'} ne "construct" &&
1817: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.512.2.20 raeburn 1818: my $rndseedval = $rndseed;
1819: if (($symb eq '') && ($Apache::lonhomework::type eq 'randomizetry')) {
1820: $rndseedval = $env{'form.rndseed'};
1821: }
1.162 albertel 1822: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.512.2.20 raeburn 1823: $rndseedval.'" />'.
1.462 raeburn 1824: '<input type="submit" name="resetdata"
1825: value="'.&mt('New Problem Variation').'" />';
1.334 albertel 1826: if (exists($env{'form.username'})) {
1827: $form_tag_start.=
1.164 albertel 1828: '<input type="hidden" name="username"
1.284 albertel 1829: value="'.$env{'form.username'}.'" />';
1.334 albertel 1830: }
1.462 raeburn 1831: if ($env{'request.role.adv'}) {
1832: $form_tag_start.= ' <label class="LC_nobreak">'
1833: .'<input type="checkbox" name="showallfoils"';
1834: if (defined($env{'form.showallfoils'})) {
1835: $form_tag_start.=' checked="checked"';
1836: }
1837: $form_tag_start.= ' /> '
1838: .&mt('Show All Foils')
1839: .'</label>';
1840: }
1.417 www 1841: if ($Apache::lonhomework::type eq 'practice') {
1.428 raeburn 1842: $form_tag_start.=&practice_problem_header();
1.417 www 1843: }
1.462 raeburn 1844: $form_tag_start.='<hr />';
1.512.2.20 raeburn 1845: }
1846: if (($env{'request.state'} ne "construct") &&
1847: ($Apache::lonhomework::type eq 'randomizetry') &&
1848: ($status eq 'CAN_ANSWER')) {
1.512.2.21 raeburn 1849: my @parts;
1850: if (ref($probpartlist) eq 'ARRAY') {
1851: @parts = @{$probpartlist};
1852: }
1853: unless (@parts) {
1854: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1855: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1856: $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries,$symb);
1857: }
1.479 raeburn 1858: }
1.324 albertel 1859:
1.159 albertel 1860: my $expression='$external::datestatus="'.$status.'";';
1861: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
1862: &Apache::run::run($expression,$safeeval);
1863: &Apache::lonxml::debug("Got $status");
1.324 albertel 1864:
1.159 albertel 1865: if (( $status eq 'CLOSED' ) ||
1866: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1867: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 1868: ( $status eq 'BANNED') ||
1.216 albertel 1869: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 1870: ( $status eq 'NOT_IN_A_SLOT') ||
1.499 raeburn 1871: ( $status eq 'NOTRESERVABLE') ||
1872: ( $status eq 'RESERVABLE') ||
1873: ( $status eq 'RESERVABLE_LATER') ||
1.216 albertel 1874: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1875: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1876: $style);
1.159 albertel 1877: if ( $target eq "web" ) {
1.343 albertel 1878: my $msg;
1.159 albertel 1879: if ($status eq 'UNAVAILABLE') {
1.504 golterma 1880: $msg.='<p class="LC_error">'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</p>';
1.441 raeburn 1881: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.504 golterma 1882: $msg.='<p class="LC_warning">'.&mt('You are not currently signed up to work at this time and/or place.').'</p>';
1.499 raeburn 1883: } elsif (($status eq 'RESERVABLE') || ($status eq 'RESERVABLE_LATER') ||
1884: ($status eq 'NOTRESERVABLE')) {
1.504 golterma 1885: $msg.='<p class="LC_warning">'.&mt('Access requires reservation to work at specific time/place.').'</p>';
1.253 albertel 1886: } elsif ($status ne 'NOT_YET_VIEWED') {
1.504 golterma 1887: $msg.='<p class="LC_warning">'.&mt('Not open to be viewed').'</p>';
1.499 raeburn 1888: }
1.216 albertel 1889: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 1890: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 1891: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 1892: $msg.=&checkout_msg();
1.252 albertel 1893: } elsif ($status eq 'NOT_YET_VIEWED') {
1.512.2.16 raeburn 1894: if ($firstaccres) {
1895: $msg .= '<p class="LC_error">'.
1896: &mt('A problem occurred when trying to start the timer.').'</p>';
1897: }
1.253 albertel 1898: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 1899: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.441 raeburn 1900: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.499 raeburn 1901: } elsif ($status eq 'RESERVABLE') {
1902: $msg.=&mt('Available to make a reservation.').' '.&mt('Reservation window closes [_1].',
1903: &Apache::lonnavmaps::timeToHumanString($accessmsg,'end')).
1904: '<br />'.
1905: &Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1906: } elsif ($status eq 'RESERVABLE_LATER') {
1907: $msg.=&mt('Window to make a reservation will open [_1].',
1908: &Apache::lonnavmaps::timeToHumanString($accessmsg,'start'));
1909: } elsif ($status eq 'NOTRESERVABLE') {
1910: $msg.=&mt('Not available to make a reservation.');
1.159 albertel 1911: }
1912: $result.=$msg.'<br />';
1913: } elsif ($target eq 'tex') {
1.332 albertel 1914: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
1915: : '\begin{minipage}{\textwidth}';
1.443 foxr 1916: $result.='\noindent \vskip 1 mm '.
1.332 albertel 1917: $startminipage.'\vskip 0 mm';
1.159 albertel 1918: if ($status eq 'UNAVAILABLE') {
1.211 albertel 1919: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 1920: } else {
1.211 albertel 1921: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 1922: }
1923: }
1.324 albertel 1924: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 1925: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1926: $style);
1.324 albertel 1927: if ($target eq 'web') {
1.375 albertel 1928: $result .=
1929: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 1930: } elsif ($target eq 'grade') {
1931: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
1932: 'problem');
1933: }
1.159 albertel 1934: } elsif ($target eq 'web') {
1.508 raeburn 1935: if ($status eq 'CAN_ANSWER') {
1936: $resource_due = &Apache::lonhomework::due_date(0, $env{'request.symb'});
1937: if ($slot_name ne '') {
1938: my $checked_in =
1939: $Apache::lonhomework::history{'resource.0.checkedin'};
1940: if ($checked_in eq '') {
1941: # unproctored slot access, self checkin
1942: &Apache::bridgetask::check_in('problem',undef,undef,
1943: $slot_name);
1944: $checked_in =
1945: $Apache::lonhomework::results{"resource.0.checkedin"};
1946: }
1947: if ((ref($slot) eq 'HASH') && ($checked_in ne '')) {
1948: if ($slot->{'starttime'} < time()) {
1949: if (!$resource_due) {
1950: $resource_due = $slot->{'endtime'};
1951: } elsif ($slot->{'endtime'} < $resource_due) {
1952: $resource_due = $slot->{'endtime'};
1953: }
1954: }
1955: }
1956: }
1957: if ($resource_due) {
1958: my $time_left = $resource_due - time();
1959: if ($resource_due && ($time_left > 0) && ($target eq 'web')) {
1960: $result .= &Apache::lonhtmlcommon::set_due_date($resource_due);
1961: }
1962: }
1963: }
1.368 albertel 1964: $result.="\n $form_tag_start \t".
1.227 albertel 1965: '<input type="hidden" name="submitted" value="yes" />';
1966: # create a page header and exit
1.284 albertel 1967: if ($env{'request.state'} eq "construct") {
1968: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428 raeburn 1969: if ($Apache::lonhomework::type eq 'practice') {
1970: $result.= '<input type="submit" name="resetdata" '.
1971: 'value="'.&mt('New Problem Variation').'" />'.
1972: &practice_problem_header().'<hr />';
1.512.2.19 raeburn 1973: } elsif ($Apache::lonhomework::type eq 'randomizetry') {
1974: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1975: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1976: $result.=&randomizetry_problem_header($problemstatus,$reqtries);
1.428 raeburn 1977: }
1.227 albertel 1978: }
1979: # if we are viewing someone else preserve that info
1.284 albertel 1980: if (defined $env{'form.grade_symb'}) {
1.227 albertel 1981: foreach my $field ('symb','courseid','domain','username') {
1982: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 1983: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 1984: }
1.479 raeburn 1985: foreach my $field ('trial','questiontype') {
1986: if ($env{"form.grade_$field"} ne '') {
1987: $result .= '<input type="hidden" name="grade_'.$field.
1988: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1989: }
1990: }
1.159 albertel 1991: }
1.490 raeburn 1992: if ($env{'form.grade_imsexport'}) {
1993: $result = '';
1994: }
1.159 albertel 1995: } elsif ($target eq 'tex') {
1.319 foxr 1996: $result .= 'INSERTTEXFRONTMATTERHERE';
1.500 foxr 1997: $result .= &select_metadata_hyphenation();
1998:
1.319 foxr 1999:
1.99 sakharuk 2000: }
1.159 albertel 2001: } elsif ($target eq 'edit') {
1.343 albertel 2002: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 2003: $Apache::lonxml::warnings_error_header=
2004: &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 2005: my $temp=&Apache::edit::insertlist($target,$token);
2006: $result.=$temp;
2007: } elsif ($target eq 'modified') {
2008: $result=$token->[4];
2009: } else {
2010: # page_start returned a starting result, delete it if we don't need it
2011: $result = '';
1.99 sakharuk 2012: }
1.159 albertel 2013: return $result;
1.9 albertel 2014: }
2015:
2016: sub end_problem {
1.159 albertel 2017: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 2018: my $result;
1.310 foxr 2019:
1.321 albertel 2020: if (!$Apache::lonxml::metamode) {
2021: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 2022: $Apache::lonxml::post_evaluate=0;
1.321 albertel 2023: }
1.319 foxr 2024:
2025: if ($target eq 'tex') {
1.321 albertel 2026: # Figure out the front matter and replace the
2027: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
2028: # this in end_problem because whether or not we display due
2029: # dates depends on whether due dates have already been
2030: # displayed in the problem parts.
2031:
1.319 foxr 2032: my $frontmatter = '';
2033: my $startminipage = '';
2034: if (not $env{'form.problem_split'}=~/yes/) {
2035: $startminipage = '\begin{minipage}{\textwidth}';
2036: }
2037: my $id = $Apache::inputtags::part;
2038: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
2039: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9 raeburn 2040: my @packages = split(/,/,$packages);
1.319 foxr 2041: my $allow_print_points = 0;
2042: foreach my $partial_key (@packages) {
2043: if ($partial_key=~m/^part_0$/) {
2044: $allow_print_points=1;
2045: }
2046: }
2047: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
2048: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
2049: if (lc($env{'course.'.$env{'request.course.id'}.
2050: '.disableexampointprint'}) eq 'yes') {
2051: $allow_print_points=0;
2052: }
2053: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443 foxr 2054: 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 2055: &clear_required_languages();
1.319 foxr 2056: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
2057: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
2058:
2059: # Figure out what the due date is and if we need to print
2060: # it in the problem header. We have been logging the
2061: # last due date written to file.
2062:
2063: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
2064: my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448 bisitz 2065: my $duedate_text = &mt('Due date: [_1]'
2066: ,&Apache::lonlocal::locallocaltime($duetime));
1.319 foxr 2067: my $temp_file;
2068: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
2069:
2070: # Figure out what the last printed due date is or set it
2071: # to the epoch if no duedates have been printed.
2072:
2073: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
2074: if (-e $filename) {
2075: $temp_file = Apache::File->new($filename);
2076: my @due_file = <$temp_file>;
2077: $due_file_content = $due_file[$#due_file];
2078: chomp $due_file_content;
2079: }
2080:
2081: # We display the due date iff it is not the same as the last
2082: # duedate in problem header ($due_file_content), and
2083: # none of our parts displayed a duedate.
2084: #
2085: my $parts_with_displayduedate;
2086: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
2087: $parts_with_displayduedate =
2088: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
2089: } else {
2090: $parts_with_displayduedate = 0;
2091: }
2092: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
2093: $temp_file = Apache::File->new('>'.$filename);
2094: print $temp_file "$duetime\n";
2095: if (not $env{'request.symb'} =~ m/\.page_/) {
2096: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
2097: $frontmatter .= $begin_doc.
1.448 bisitz 2098: '\textit{'.$duedate_text.'} '.$toc_line;
1.319 foxr 2099: } else {
2100: $frontmatter.= $begin_doc.$toc_line;
1.463 foxr 2101: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) {
1.492 christia 2102: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2103: }
1.319 foxr 2104: }
2105: } else {
1.448 bisitz 2106: $frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319 foxr 2107: }
2108: } else {
2109: if (not $env{'request.symb'} =~ m/\.page_/) {
2110: $frontmatter .= $begin_doc.$toc_line;
1.463 foxr 2111: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) {
1.492 christia 2112: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2113: }
1.319 foxr 2114: } else {
1.381 albertel 2115: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 2116: }
2117: }
2118: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
1.512.2.24.2. (raeburn 2119:): } elsif ($target eq 'web') {
2120:): if ($env{'request.user_in_effect'}) {
2121:): &reset_problem_globals('problem');
2122:): $result .= &Apache::lonhtmlcommon::set_compute_end_time();
2123:): return $result;
2124:): }
1.319 foxr 2125: }
2126:
1.159 albertel 2127: my $status=$Apache::inputtags::status['-1'];
2128: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
2129: $target eq 'tex') {
1.249 albertel 2130: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 2131: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 2132: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
2133: &Apache::inputtags::grade;
1.324 albertel 2134: } elsif ($status eq 'NEEDS_CHECKIN') {
2135: # no need to grade, and don't want to hide data
1.249 albertel 2136: } else {
2137: # move any submission data to .hidden
2138: &Apache::inputtags::hidealldata($Apache::inputtags::part);
2139: }
1.159 albertel 2140: } elsif ( ($target eq 'web' || $target eq 'tex') &&
2141: $Apache::inputtags::part eq '0' &&
1.490 raeburn 2142: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED'
2143: && !$env{'form.grade_imsexport'}) {
1.159 albertel 2144: # if part is zero, no <part>s existed, so we need show the current
2145: # grading status
2146: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
2147: $result.= $gradestatus;
2148: }
2149: if (
1.284 albertel 2150: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 2151: ($target eq 'answer') || ($target eq 'tex')
2152: ) {
1.490 raeburn 2153: if (($target ne 'tex') &&
2154: ($env{'form.answer_output_mode'} ne 'tex') &&
2155: (!$env{'form.grade_imsexport'})) {
1.254 www 2156: $result.="</form>";
1.159 albertel 2157: }
2158: if ($target eq 'web') {
1.507 raeburn 2159: #
2160: # Closing </body></html> not added by end_page().
2161: # Added separately at end of this routine, after added
2162: # <script></script> so document will be valid xhtml.
2163: #
2164: $result.= &Apache::loncommon::end_page({'discussion' => 1,
2165: 'notbody' => 1});
1.159 albertel 2166: } elsif ($target eq 'tex') {
1.178 sakharuk 2167: my $endminipage = '';
1.284 albertel 2168: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 2169: $endminipage = '\end{minipage}';
2170: }
1.284 albertel 2171: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 2172: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 2173: } else {
1.262 sakharuk 2174: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 2175: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 2176: $result .= $endminipage.'\end{document} ';
2177: } else {
1.382 albertel 2178: $result .= $endminipage;
1.262 sakharuk 2179: }
1.159 albertel 2180: }
2181: }
2182: }
1.476 www 2183: if ($target eq 'web') {
1.512.2.21 raeburn 2184: $result.=&Apache::functionplotresponse::init_script();
2185: if ($Apache::lonhomework::default_type eq 'randomizetry') {
2186: my ($symb) = &Apache::lonnet::whichuser();
2187: if ((($env{'request.state'} eq 'construct') || ($symb eq '')) &&
2188: ($status eq 'CAN_ANSWER')) {
2189: unless (@Apache::inputtags::partlist > 1) {
2190: $result.= <<"ENDJS";
2191: <script type="text/javascript">
2192: // <![CDATA[
2193: \$(document).ready(function() {
2194: \$('#LC_randomizetry_header').css('display','block');
2195: });
2196: // ]]>
2197: </script>
2198: ENDJS
2199: }
2200: }
2201: }
1.476 www 2202: }
1.159 albertel 2203: if ($target eq 'grade') {
2204: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
2205: &finalize_storage();
2206: }
1.284 albertel 2207: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
2208: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 2209: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 2210: # normally we get it from above, but in CSTR
1.172 albertel 2211: # we always show answer mode too.
1.159 albertel 2212: }
2213: } elsif ($target eq 'meta') {
2214: if ($Apache::inputtags::part eq '0') {
1.179 albertel 2215: @Apache::inputtags::response=();
1.159 albertel 2216: $result=&Apache::response::mandatory_part_meta;
2217: }
1.215 albertel 2218: $result.=&Apache::response::meta_part_order();
1.258 albertel 2219: $result.=&Apache::response::meta_response_order();
1.159 albertel 2220: } elsif ($target eq 'edit') {
2221: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 2222: $result .= &problem_edit_footer();
1.320 albertel 2223: } elsif ($target eq 'modified') {
2224: $result .= $token->[2];
1.159 albertel 2225: }
1.155 albertel 2226:
1.284 albertel 2227: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 2228: &Apache::inputtags::check_for_duplicate_ids();
2229: }
1.204 albertel 2230:
2231: &reset_problem_globals('problem');
1.159 albertel 2232:
1.502 foxr 2233: #
2234: # This shouild be just above the return so that the
2235: # time put in the javascript is as late as possible in the
2236: # computation:
2237: #
2238: if ($target eq 'web') {
1.512.2.24.2. (raeburn 2239:): $result .= &Apache::lonhtmlcommon::dash_to_minus_js().
2240:): &Apache::lonhtmlcommon::set_compute_end_time();
1.507 raeburn 2241: #
2242: # Closing tags delayed so any <script></script> tags
2243: # not in head can appear inside body, for valid xhtml.
2244: #
2245: $result .= "</body>\n</html>";
1.502 foxr 2246: }
1.159 albertel 2247: return $result;
1.48 albertel 2248: }
2249:
1.108 albertel 2250:
1.48 albertel 2251: sub start_library {
1.159 albertel 2252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 2253: my ($result,$form_tag_start);
1.371 albertel 2254: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 2255: &init_problem_globals('library');
2256: $Apache::lonhomework::type='problem';
2257: }
1.159 albertel 2258: if ($target eq 'edit') {
1.343 albertel 2259: ($result,$form_tag_start)=
2260: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
2261: 'Edit');
2262: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 2263: my $temp=&Apache::edit::insertlist($target,$token);
2264: $result.=$temp;
2265: } elsif ($target eq 'modified') {
2266: $result=$token->[4];
1.340 albertel 2267: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 2268: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 2269: && $env{'request.state'} eq "construct" ) {
1.159 albertel 2270: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 2271: ($result,$form_tag_start)=
2272: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
2273: $name);
1.479 raeburn 2274: my $rndseed=&setup_rndseed($safeeval,$target);
1.343 albertel 2275: $result.=" \n $form_tag_start".
1.159 albertel 2276: '<input type="hidden" name="submitted" value="yes" />';
2277: $result.=&problem_web_to_edit_header($rndseed);
1.428 raeburn 2278: if ($Apache::lonhomework::type eq 'practice') {
2279: $result.= '<input type="submit" name="resetdata" '.
2280: 'value="'.&mt('New Problem Variation').'" />'.
2281: &practice_problem_header().'<hr />';
2282: }
1.159 albertel 2283: }
2284: return $result;
1.48 albertel 2285: }
2286:
2287: sub end_library {
1.159 albertel 2288: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2289: my $result='';
2290: if ($target eq 'edit') {
2291: $result=&problem_edit_footer();
1.371 albertel 2292: } elsif ($target eq 'web'
2293: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
2294: && $env{'request.state'} eq "construct") {
1.349 albertel 2295: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.512.2.15 raeburn 2296: } elsif ($target eq 'meta') {
2297: $result.=&Apache::response::meta_response_order();
1.159 albertel 2298: }
1.371 albertel 2299: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
2300: &reset_problem_globals('library');
2301: }
1.159 albertel 2302: return $result;
1.197 www 2303: }
2304:
2305: sub start_definetag {
1.326 albertel 2306: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 2307:
2308: my $result;
2309:
2310: my $name = $token->[2]->{'name'};
1.326 albertel 2311: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 2312: if ($target eq 'web') {
2313: if ($name=~/^\//) {
2314: $result=
2315: '<br /><table class="LC_sty_end"><tr><th>'.
2316: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
2317: } else {
2318: $result=
2319: '<br /><table class="LC_sty_begin"><tr><th>'.
2320: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
2321: }
2322: $skip = &HTML::Entities::encode($skip, '<>&"');
2323: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 2324: }
2325: return $result;
2326: }
2327:
2328: sub end_definetag {
2329: return '';
1.1 albertel 2330: }
2331:
2332: sub start_block {
1.201 albertel 2333: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 2334:
2335: my $result;
1.1 albertel 2336:
1.339 albertel 2337: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2338: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 2339: my $code = $token->[2]->{'condition'};
1.385 albertel 2340: if (defined($code) && $code ne '') {
1.137 albertel 2341: if (!$Apache::lonxml::default_homework_loaded) {
2342: &Apache::lonxml::default_homework_load($safeeval);
2343: }
1.131 albertel 2344: $result = &Apache::run::run($code,$safeeval);
2345: &Apache::lonxml::debug("block :$code: returned :$result:");
2346: } else {
2347: $result='1';
2348: }
2349: if ( ! $result ) {
1.201 albertel 2350: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 2351: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2352: }
2353: $result='';
2354: } elsif ($target eq 'edit') {
2355: $result .=&Apache::edit::tag_start($target,$token);
2356: $result .=&Apache::edit::text_arg('Test Condition:','condition',
2357: $token,40);
2358: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2359: } elsif ($target eq 'modified') {
2360: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2361: $safeeval,'condition');
2362: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 2363: }
1.131 albertel 2364: return $result;
1.1 albertel 2365: }
2366:
2367: sub end_block {
1.167 www 2368: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2369: my $result;
2370: if ($target eq "edit") {
2371: $result.= &Apache::edit::tag_end($target,$token,'');
2372: }
2373: return $result;
2374: }
1.500 foxr 2375: #
2376: # <languageblock [include='lang1,lang2...'] [exclude='lang1,lang2...']>
2377: # ...
2378: # </languageblock>
2379: #
2380: # This declares the intent to provide content that can be rendered in the
2381: # set of languages in the include specificatino but not in the exclude
2382: # specification. If a currently preferred language is in the include list
2383: # the content in the <languageblock>...</languageblock> is rendered
2384: # If the currently preferred language is in the exclude list,
2385: # the content in the <languageblock>..></languageblock is not rendered.
2386: #
2387: # Pathalogical case handling:
2388: # - Include specified, without the preferred language but exclude specified
2389: # also without the preferred langauge results in rendering the block.
2390: # - Exclude specified without include and excluden not containing a
2391: # preferred language renders the block.
2392: # - Include and exclude both specifying the preferred language does not
2393: # render the block.
2394: # - If neither include/exclude is specified, the block gets rendered.
2395: #
2396: # This tag has no effect when target is in {edit, modified}
2397: #
1.167 www 2398: sub start_languageblock {
1.201 albertel 2399: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 2400:
1.500 foxr 2401: my $result = '';
1.167 www 2402:
1.339 albertel 2403: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2404: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 2405: my $include = $token->[2]->{'include'};
2406: my $exclude = $token->[2]->{'exclude'};
1.436 raeburn 2407: my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.500 foxr 2408:
2409: # This should not even happen, since we should at least have the server language
2410:
2411: if (!$preferred_languages[0]) {
2412: $preferred_languages[0]='en';
2413: }
2414:
2415: # Now loop over all languages in order of preference
2416:
2417: my $render;
1.398 www 2418: foreach my $preferred_language (@preferred_languages) {
1.500 foxr 2419:
2420: # If neither include/nor exlude is present the block is going
2421: # to get rendered.
2422:
1.399 www 2423: my $found=0;
1.500 foxr 2424: $render=1;
2425:
2426: # If include is specified, don't render the block
2427: # unless the preferred language is included in the set.
2428:
1.398 www 2429: if ($include) {
1.500 foxr 2430: $render=0;
1.398 www 2431: foreach my $included_language (split(/\,/,$include)) {
2432: if ($included_language eq $preferred_language) {
1.500 foxr 2433: $render=1;
1.399 www 2434: $found=1;
1.500 foxr 2435: last; # Only need to find the first.
1.398 www 2436: }
2437: }
2438: }
1.500 foxr 2439: # Do we have an exclude argument?
2440: # If so, and one of the languages matches a preferred language
2441: # inhibit rendering the block. Note that in the pathalogical case the
2442: # author has specified a preferred language in both the include and exclude
2443: # attribte exclude is preferred.
2444:
1.398 www 2445: if ($exclude) {
1.500 foxr 2446: $render=1;
1.398 www 2447: foreach my $excluded_language (split(/\,/,$exclude)) {
2448: if ($excluded_language eq $preferred_language) {
1.500 foxr 2449: $render=0;
1.399 www 2450: $found=1;
1.500 foxr 2451: last; # Only need to find the first.
1.398 www 2452: }
2453: }
2454: }
1.500 foxr 2455: if ($found) {
2456: last; # Done on any match of include or exclude.
2457: }
1.398 www 2458: }
1.500 foxr 2459: # If $render not true skip the entire block until </languageblock>
2460: #
2461:
2462: if ( ! $render ) {
1.201 albertel 2463: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
2464: $style);
2465: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2466: }
1.500 foxr 2467: # If $render is true, we've not skipped the contents of the <languageglock>
2468: # and the normal loncapa processing flow will render it as a matter of course.
2469:
1.167 www 2470: } elsif ($target eq 'edit') {
2471: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 2472: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 2473: $token,40);
1.211 albertel 2474: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 2475: $token,40);
2476: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2477: } elsif ($target eq 'modified') {
2478: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 2479: $safeeval,'include',
2480: 'exclude');
1.167 www 2481: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2482: }
2483: return $result;
2484: }
2485:
2486: sub end_languageblock {
1.170 www 2487: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2488: my $result;
1.201 albertel 2489: if ($target eq "edit") {
1.170 www 2490: $result.= &Apache::edit::tag_end($target,$token,'');
2491: }
2492: return $result;
2493: }
1.500 foxr 2494: # languagblock specific tags:
2495: {
2496: # For chunks of a resource that has translations, this hash contains
2497: # the translations available indexed by language name.
2498: #
2499:
2500: my %available_texts;
1.170 www 2501:
1.500 foxr 2502: # <translated> starts a block of a resource that has multiple translations.
2503: # See the <lang> tag as well.
2504: # When </translated> is encountered if there is a translation for the
2505: # currently preferred language, that is rendered inthe web/tex/webgrade
2506: # targets. Otherwise, the default text is rendered.
2507: #
2508: # Note that <lang> is only registered for the duration of the
2509: # <translated>...</translated> block
2510: #
2511: # Pathalogical case handling:
2512: # - If there is no <lang> that specifies a 'default' and there is no
2513: # translation that matches a preferred language, nothing is rendered.
2514: # - Nested <translated>...</translated> might be linguistically supported by
2515: # XML due to the stack nature of tag registration(?) however the rendered
2516: # output will be incorrect because there is only one %available_texts
2517: # has and end_translated clears it.
2518: # - Material outside of a <lang>...</lang> block within the
2519: # <translated>...<translated> block won't render either e.g.:
2520: # <translated>
2521: # The following will be in your preferred langauge:
2522: # <lang which='en'>
2523: # This section in english
2524: # </lang>
2525: # <lang which='sgeiso'>
2526: # Hier es ist auf Deutsch.
2527: # </lang>
2528: # <lang which='sfriso'>
2529: # En Francais
2530: # </lang>
2531: # </translated>
2532: #
2533: # The introductory text prior to the first <lang> tag is not rendered.
2534: #
1.397 albertel 2535: sub start_translated {
2536: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2537: &Apache::lonxml::register('Apache::structuretags',('lang'));
2538: undef(%available_texts);
2539: }
2540:
2541: sub end_translated {
2542: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2543: my $result;
2544: #show the translation on viewable targets
2545: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
2546: # or non-viewable targets, if it's embedded in something that
2547: # wants the output
2548: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
2549: && &Apache::lonxml::in_redirection() ) ) {
2550: my @possibilities = keys(%available_texts);
2551: my $which =
2552: &Apache::loncommon::languages(\@possibilities) || 'default';
1.500 foxr 2553: if ($target eq 'tex') {
2554: $result = &select_hyphenation($which);
2555: }
2556: $result .= $available_texts{$which};
2557: if ($target eq 'tex') {
2558: $result .= &select_metadata_hyphenation(); # Restore original language.
2559: }
1.397 albertel 2560: }
2561: undef(%available_texts);
2562: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
2563: return $result;
2564: }
2565:
1.500 foxr 2566: # <lang [which='language-name'] [other='lang1,lang2...']>
2567: # Specifies that the block contained within it is a translation
2568: # for a specific language specified by the 'which' attribute. The
2569: # 'other' attribute can be used by itself or in conjunction with
2570: # which to specify this tag _may_ be used as a translation for some
2571: # list of languages. e.g.: <lang which='senisoUS' other='senisoCA,senisoAU,seniso'>
2572: # specifying that the block provides a translation for US (primary)
2573: # Canadian, Australian and UK Englush.
2574: #
2575: # Comment: this seems a bit silly why not just support a list of languages
2576: # e.g. <lang which='l1,l2...'> and ditch the other attribute?
2577: #
2578: # Effect:
2579: # The material within the <lang>..</lang> block is stored in the
2580: # specified set of $available_texts hash entries, the appropriate one
2581: # is selected at </translated> time.
2582: #
2583: # Pathalogical case handling:
2584: # If a language occurs multiple times within a <translated> block,
2585: # only the last one is rendered e.g.:
2586: #
2587: # <translated>
2588: # <lang which='senisoUS', other='senisoCA,senisoAU,seniso'>
2589: # Red green color blindness is quite common affecting about 7.8% of
2590: # the male population, but onloy about .65% of the female population.
2591: # </lang>
2592: # Red green colour blindness is quite common affecting about 7.8% of
2593: # the male population, but onloy about .65% of the female population.
2594: # <lang which='seniso', other='senisoCA,senisoAU'>
2595: # </translated>
2596: #
2597: # renders the correct spelling of color (colour) for people who have specified
2598: # a preferred language that is one of the British Commonwealth languages
2599: # even though those are also listed as valid selections for the US english
2600: # <lang> block.
2601: #
1.397 albertel 2602: sub start_lang {
2603: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2604: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2605: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
2606: &Apache::lonxml::startredirection();
2607: }
2608: return '';
2609: }
2610:
2611: sub end_lang {
2612: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2613: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2614: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
2615: my $result = &Apache::lonxml::endredirection();
2616: my $which = &Apache::lonxml::get_param('which',$parstack,
2617: $safeeval);
1.431 raeburn 2618: if ($which=~/\w/) {
2619: $available_texts{$which} = $result;
2620: }
2621: my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
2622: $safeeval);
2623: foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
2624: if ($language=~/\w/) {
2625: $available_texts{$language} = $result;
2626: }
1.427 bisitz 2627: }
2628:
1.397 albertel 2629: }
2630: return '';
2631: }
1.500 foxr 2632: } # end langauge block specific tags.
2633:
1.397 albertel 2634:
1.170 www 2635: sub start_instructorcomment {
1.201 albertel 2636: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 2637:
2638: my $result;
2639:
1.339 albertel 2640: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2641: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468 raeburn 2642: $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284 albertel 2643: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 2644: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
2645: $parser,$style);
1.170 www 2646: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
2647: }
2648: $result='';
2649: } elsif ($target eq 'edit') {
2650: $result .=&Apache::edit::tag_start($target,$token);
2651: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2652: }
2653: return $result;
2654: }
2655:
2656: sub end_instructorcomment {
1.159 albertel 2657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 2658: my $result;
2659: if ($target eq "edit") {
2660: $result.= &Apache::edit::tag_end($target,$token,'');
2661: }
2662: return $result;
1.4 tsai 2663: }
2664:
2665: sub start_while {
1.326 albertel 2666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2667:
1.160 albertel 2668: my $result;
1.339 albertel 2669: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2670: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 2671: my $code = $token->[2]->{'condition'};
1.4 tsai 2672:
1.160 albertel 2673: push( @Apache::structuretags::whileconds, $code);
2674: if (!$Apache::lonxml::default_homework_loaded) {
2675: &Apache::lonxml::default_homework_load($safeeval);
2676: }
2677: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 2678: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 2679: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 2680: push( @Apache::structuretags::whileline, $token->[5]);
2681: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 2682: if ( $result ) {
2683: &Apache::lonxml::newparser($parser,\$bodytext);
2684: }
2685: } elsif ($target eq 'edit') {
2686: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 2687: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 2688: $token,40);
2689: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2690: } elsif ($target eq 'modified') {
2691: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2692: $safeeval,'condition');
2693: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 2694: }
1.160 albertel 2695: return $result;
1.4 tsai 2696: }
2697:
2698: sub end_while {
1.159 albertel 2699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 2700: my $result;
2701:
1.339 albertel 2702: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2703: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 2704: my $code = pop(@Apache::structuretags::whileconds);
2705: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 2706: my $line = pop(@Apache::structuretags::whileline);
2707: my $return = &Apache::run::run($code,$safeeval);
2708: my $starttime=time;
2709: my $error=0;
2710: while ($return) {
2711: if (time-$starttime >
2712: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 2713: $return = 0; $error=1; next;
1.161 albertel 2714: }
2715: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 2716: if ($target eq 'grade' || $target eq 'answer' ||
2717: $target eq 'analyze') {
2718: # grade/answer/analyze should produce no output but if we
2719: # are redirecting, the redirecter should know what to do
2720: # with the output
2721: if (!$Apache::lonxml::redirection) { undef($result); }
2722: }
1.161 albertel 2723: $return = &Apache::run::run($code,$safeeval);
2724: }
1.512.2.5 raeburn 2725: if ($error) {
2726: &Apache::lonxml::error(
2727: '<pre>'
2728: .&mt('Code ran too long. It ran for more than [_1] seconds.',
2729: $Apache::lonnet::perlvar{'lonScriptTimeout'})
2730: .&mt('This occurred while running <while> on line [_1].',
2731: $line)
2732: .'</pre>');
2733: }
1.160 albertel 2734: } elsif ($target eq "edit") {
2735: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 2736: }
1.160 albertel 2737: return $result;
1.1 albertel 2738: }
1.6 tsai 2739:
1.160 albertel 2740: # <randomlist show="1">
1.6 tsai 2741: # <tag1>..</tag1>
2742: # <tag2>..</tag2>
2743: # <tag3>..</tag3>
1.160 albertel 2744: # ...
1.6 tsai 2745: # </randomlist>
2746: sub start_randomlist {
1.326 albertel 2747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2748: my $result;
1.339 albertel 2749: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
2750: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 2751: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 2752: my $b_parser= HTML::LCParser->new(\$body);
2753: $b_parser->xml_mode(1);
2754: $b_parser->marked_sections(1);
1.159 albertel 2755: my $b_tok;
2756: my @randomlist;
2757: my $list_item;
2758: while($b_tok = $b_parser->get_token() ) {
2759: if($b_tok->[0] eq 'S') { # start tag
2760: # get content of the tag until matching end tag
2761: # get all text upto the matching tag
2762: # and push the content into @randomlist
2763: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
2764: $b_parser);
2765: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
2766: push(@randomlist,$list_item);
2767: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
2768: # $list_item</b>";
2769: }
2770: if($b_tok->[0] eq 'T') { # text
2771: # what to do with text in between tags?
2772: # print "<b>TEXT $b_tok->[1]</b><br />";
2773: }
2774: # if($b_tok->[0] eq 'E') { # end tag, should not happen
2775: # print "<b>END-TAG $b_tok->[1]</b><br />";
2776: # }
2777: }
1.303 albertel 2778: if (@randomlist) {
2779: my @idx_arr = (0 .. $#randomlist);
1.512.2.14 raeburn 2780: if ($env{'form.code_for_randomlist'}) {
2781: &Apache::structuretags::shuffle(\@idx_arr,$target);
2782: undef($env{'form.code_for_randomlist'});
2783: } else {
2784: &Apache::structuretags::shuffle(\@idx_arr);
2785: }
1.303 albertel 2786: my $bodytext = '';
2787: my $show=$#randomlist;
2788: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
2789: $showarg--;
2790: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439 raeburn 2791: if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
2792: my @currlist;
2793: my $part = $Apache::inputtags::part;
2794: if ($part ne '') {
2795: if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
2796: my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
2797: if (!(grep(/^\Q$part\E$/,@currlist))) {
2798: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
2799: }
2800: } else {
2801: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
2802: }
2803: }
2804: }
1.512.2.9 raeburn 2805: for my $i (0 .. $show) {
2806: $bodytext .= "$randomlist[ $idx_arr[$i] ]";
1.303 albertel 2807: }
2808: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 2809: }
2810: } elsif ($target eq 'edit' ) {
2811: $result .=&Apache::edit::tag_start($target,$token);
2812: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
2813: $token,5);
2814: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2815: } elsif ($target eq 'modified' ) {
2816: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2817: $safeeval,'show');
2818: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2819: }
2820: return $result;
1.7 tsai 2821: }
2822:
2823: sub shuffle {
1.512.2.14 raeburn 2824: my ($a,$target) = @_;
1.7 tsai 2825: my $i;
1.303 albertel 2826: if (ref($a) eq 'ARRAY' && @$a) {
1.512.2.14 raeburn 2827: &Apache::response::pushrandomnumber(undef,$target);
1.159 albertel 2828: for($i=@$a;--$i;) {
2829: my $j=int(&Math::Random::random_uniform() * ($i+1));
2830: next if $i == $j;
2831: @$a[$i,$j] = @$a[$j,$i];
2832: }
1.251 albertel 2833: &Apache::response::poprandomnumber();
1.7 tsai 2834: }
1.6 tsai 2835: }
2836:
2837: sub end_randomlist {
1.159 albertel 2838: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2839: my $result;
2840: if ($target eq 'edit' ) {
2841: $result=&Apache::edit::tag_end($target,$token,
2842: 'End Randomly Parsed Block');
2843: }
2844: return $result;
1.6 tsai 2845: }
2846:
1.283 albertel 2847: sub ordered_show_check {
2848: my $last_part=$Apache::inputtags::partlist[-2];
2849: my $in_order=
2850: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
2851: my $in_order_show=1;
2852: if ($last_part ne '0' && lc($in_order) eq 'yes') {
2853: $in_order_show=&Apache::response::check_status($last_part);
2854: }
2855: return $in_order_show;
2856: }
2857:
1.469 www 2858:
2859: sub start_startpartmarker {
2860: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2861: my $result='';
2862: if ($target eq 'edit') {
2863: $result=&Apache::edit::tag_start($target,$token);
2864: $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
2865: $result.=&Apache::edit::end_table();
2866:
2867: }
2868: return $result;
2869: }
2870:
2871: sub end_startpartmarker {
2872: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2873: my @result;
2874: if ($target eq 'edit') { $result[1]='no'; }
2875: return @result;
2876: }
2877:
2878: sub start_endpartmarker {
2879: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2880: my $result='';
2881: if ($target eq 'edit') {
2882: $result=&Apache::edit::tag_start($target,$token);
2883: $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
2884: $result.=&Apache::edit::end_table();
2885:
2886: }
2887: return $result;
2888: }
2889:
2890: sub end_endpartmarker {
2891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2892: my @result;
2893: if ($target eq 'edit') { $result[1]='no'; }
2894: return @result;
2895: }
2896:
2897:
2898:
2899:
2900:
1.11 albertel 2901: sub start_part {
1.326 albertel 2902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 2903: if (!$Apache::lonxml::metamode) {
2904: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
2905: # duedates.
2906: }
1.159 albertel 2907: my $result='';
1.386 albertel 2908: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 2909: $Apache::inputtags::part=$id;
1.177 albertel 2910: push(@Apache::inputtags::partlist,$id);
1.512.2.10 raeburn 2911: $Apache::inputtags::leniency='';
1.177 albertel 2912: @Apache::inputtags::response=();
1.159 albertel 2913: @Apache::inputtags::previous=();
2914: @Apache::inputtags::previous_version=();
1.405 albertel 2915: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 2916: &Apache::response::reset_params();
2917:
1.159 albertel 2918: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 2919: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
2920: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.512.2.9 raeburn 2921: if ($Apache::lonhomework::type eq 'randomizetry') {
2922: my $rndseed=&setup_rndseed($safeeval,$target);
2923: if (($target eq 'grade') && &Apache::response::submitted()) {
2924: $Apache::lonhomework::results{"resource.$id.rndseed"}=$rndseed;
2925: }
2926: } elsif (($target eq 'grade') && &Apache::response::submitted()) {
2927: $Apache::lonhomework::results{"resource.$id.rndseed"}=$Apache::lonhomework::rawrndseed;
2928: }
1.283 albertel 2929: my $in_order_show=&ordered_show_check();
1.214 albertel 2930: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 2931: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 2932: &Apache::run::run($expression,$safeeval);
1.159 albertel 2933:
2934: if ($target eq 'meta') {
1.224 www 2935: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
2936: return &Apache::response::mandatory_part_meta.
2937: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 2938: } elsif ($target eq 'web' || $target eq 'grade' ||
2939: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 2940: if ($hidden || !$in_order_show) {
1.326 albertel 2941: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 2942: } else {
2943: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
2944: push (@Apache::inputtags::status,$status);
2945: my $expression='$external::datestatus="'.$status.'";';
2946: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
2947: &Apache::run::run($expression,$safeeval);
1.284 albertel 2948: if ($env{'request.state'} eq 'construct') {
1.241 albertel 2949: &set_problem_state($Apache::inputtags::part);
1.240 albertel 2950: }
1.216 albertel 2951: if (( $status eq 'CLOSED' ) ||
2952: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 2953: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 2954: ( $status eq 'BANNED') ||
2955: ( $status eq 'UNAVAILABLE') ||
2956: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 2957: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
2958: $style);
1.159 albertel 2959: if ( $target eq "web" ) {
1.211 albertel 2960: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 2961: } elsif ( $target eq 'tex' ) {
1.284 albertel 2962: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 2963: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 2964: } else {
1.211 albertel 2965: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 2966: }
1.159 albertel 2967: }
2968: } else {
2969: if ($target eq 'tex') {
1.284 albertel 2970: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 2971: if ($$tagstack[-2] eq 'td') {
1.388 foxr 2972: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 2973: } else {
2974: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
2975: }
1.195 sakharuk 2976: }
1.159 albertel 2977: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 2978: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.512.2.9 raeburn 2979: my @allkeys = split(/,/,$allkeys);
1.222 sakharuk 2980: my $allow_print_points = 0;
2981: foreach my $partial_key (@allkeys) {
1.230 albertel 2982: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 2983: if ($1 ne '0') {$allow_print_points=1;}
2984: }
2985: }
1.275 albertel 2986: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
2987: if (defined($maxtries) && $maxtries < 0) {
2988: $allow_print_points=0;
2989: }
1.302 albertel 2990: if (lc($env{'course.'.$env{'request.course.id'}.
2991: '.disableexampointprint'}) eq 'yes') {
2992: $allow_print_points=0;
2993: }
1.463 foxr 2994: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) {
1.492 christia 2995: $result .= '\vskip 10mm\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2996:
2997: }
1.233 www 2998: } elsif ($target eq 'web') {
1.479 raeburn 2999: if ($status eq 'CAN_ANSWER') {
3000: my $problemstatus = &get_problem_status($Apache::inputtags::part);
3001: my $num = scalar(@Apache::inputtags::partlist)-1;
1.512.2.21 raeburn 3002: if ((($Apache::lonhomework::default_type eq 'randomizetry') ||
3003: ($Apache::lonhomework::randomizetrypart)) &&
3004: ($Apache::lonhomework::type ne 'randomizetry')) {
3005: $result .= &randomizetry_part_header($problemstatus,'none',$num);
3006: } elsif ($Apache::lonhomework::type eq 'randomizetry') {
3007: $Apache::lonhomework::randomizetrypart = 1;
3008: my $reqtries = &Apache::lonnet::EXT("resource.$id.randomizeontries");
1.479 raeburn 3009: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
3010: }
3011: }
1.475 raeburn 3012: $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159 albertel 3013: }
3014: }
3015: }
3016: } elsif ($target eq 'edit') {
3017: $result.=&Apache::edit::tag_start($target,$token);
3018: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
3019: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 3020: ' '.
3021: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 3022: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
3023: } elsif ($target eq 'modified') {
3024: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 3025: $safeeval,'id','display');
1.159 albertel 3026: if ($constructtag) {
1.225 albertel 3027: #limiting ids to only letters numbers, and space
1.224 www 3028: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 3029: $result = &Apache::edit::rebuild_tag($token);
3030: }
3031: }
3032: return $result;
1.11 albertel 3033: }
3034:
3035: sub end_part {
1.159 albertel 3036: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3037: &Apache::lonxml::debug("in end_part $target ");
3038: my $status=$Apache::inputtags::status['-1'];
3039: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 3040: my $in_order_show=&ordered_show_check();
1.321 albertel 3041: my $result;
3042: if (!$Apache::lonxml::metamode) {
3043: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 3044: $Apache::lonxml::post_evaluate=0;
1.321 albertel 3045: }
1.312 albertel 3046: if ($target eq 'grade') {
1.249 albertel 3047: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 3048: !$hidden && $in_order_show) {
1.311 foxr 3049: $result.=&Apache::inputtags::grade;
1.249 albertel 3050: } else {
3051: # move any submission data to .hidden
3052: &Apache::inputtags::hidealldata($Apache::inputtags::part);
3053: }
1.283 albertel 3054: } elsif (($target eq 'web' || $target eq 'tex') &&
3055: !$hidden && $in_order_show) {
1.159 albertel 3056: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
3057: $target);
1.490 raeburn 3058: if (($Apache::lonhomework::type eq 'exam' && $target eq 'tex') ||
3059: ($env{'form.grade_imsexport'})) {
1.212 albertel 3060: $gradestatus='';
3061: }
1.311 foxr 3062: $result.=$gradestatus;
1.512.2.24.2. (raeburn 3063:): if ($$tagstack[-2] eq 'td' and $target eq 'tex') {
3064:): if (not $env{'form.problem_split'}=~/yes/) {
3065:): $result.='\end{minipage}';
3066:): }
3067:): }
1.181 albertel 3068: } elsif ($target eq 'edit') {
1.311 foxr 3069: $result.=&Apache::edit::end_table();
1.322 albertel 3070: } elsif ($target eq 'modified') {
3071: $result .= $token->[2];
1.159 albertel 3072: }
3073: pop @Apache::inputtags::status;
3074: $Apache::inputtags::part='';
1.512.2.10 raeburn 3075: $Apache::inputtags::leniency='';
1.295 albertel 3076: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 3077: return $result;
1.11 albertel 3078: }
1.1 albertel 3079:
1.25 albertel 3080: sub start_preduedate {
1.326 albertel 3081: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 3082: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3083: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 3084: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 3085: if (!$Apache::lonhomework::scantronmode &&
3086: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 3087: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
3088: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 3089: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 3090: }
1.24 albertel 3091: }
1.159 albertel 3092: return '';
1.24 albertel 3093: }
3094:
1.25 albertel 3095: sub end_preduedate {
1.159 albertel 3096: return '';
1.24 albertel 3097: }
3098:
1.369 foxr 3099: # In all the modes where <postanswerdate> text is
3100: # displayable, all we do is eat up the text between the start/stop
3101: # tags if the conditions are not right to display it.
1.25 albertel 3102: sub start_postanswerdate {
1.326 albertel 3103: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 3104: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
3105: &Apache::lonnet::allowed('pav',
3106: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 3107: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 3108: $target eq 'tex' ) {
1.300 albertel 3109: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 3110: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
3111: (($target eq 'tex') && !$pav)) {
1.326 albertel 3112: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 3113: }
3114: }
3115: return '';
1.24 albertel 3116: }
3117:
1.25 albertel 3118: sub end_postanswerdate {
1.159 albertel 3119: return '';
1.24 albertel 3120: }
3121:
1.25 albertel 3122: sub start_notsolved {
1.326 albertel 3123: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3124: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 3125: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 3126: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
3127: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 3128: if ($gradestatus =~ /^correct/ &&
3129: &Apache::response::show_answer()) {
1.159 albertel 3130: &Apache::lonxml::debug("skipping");
1.326 albertel 3131: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 3132: }
1.24 albertel 3133: }
1.159 albertel 3134: return '';
1.24 albertel 3135: }
3136:
1.25 albertel 3137: sub end_notsolved {
1.159 albertel 3138: return '';
1.24 albertel 3139: }
3140:
3141: sub start_solved {
1.326 albertel 3142: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3143: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3144: $target eq 'tex') {
3145: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 3146: if ($gradestatus !~ /^correct/ ||
3147: !&Apache::response::show_answer()) {
1.326 albertel 3148: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 3149: }
1.24 albertel 3150: }
1.159 albertel 3151: return '';
1.24 albertel 3152: }
3153:
3154: sub end_solved {
1.248 albertel 3155: return '';
3156: }
3157:
3158: sub start_problemtype {
1.326 albertel 3159: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 3160: my $result;
1.339 albertel 3161: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
3162: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 3163: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
3164: if (!defined($mode)) { $mode='show'; }
3165: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
3166: my $found=0;
3167: foreach my $type (split(',',$for)) {
3168: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
3169: }
3170: if ($mode eq 'show' && !$found) {
1.326 albertel 3171: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 3172: }
3173: if ($mode eq 'hide' && $found) {
1.326 albertel 3174: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 3175: }
3176: } elsif ($target eq 'edit') {
3177: $result .=&Apache::edit::tag_start($target,$token);
3178: $result.=&Apache::edit::select_arg('Mode:','mode',
3179: [['show','Show'],
3180: ['hide','Hide']]
3181: ,$token);
3182: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1.512.2.2 raeburn 3183: [ ['exam','Exam/Quiz Problem'],
1.248 albertel 3184: ['survey','Survey'],
1.465 raeburn 3185: ['surveycred','Survey (with credit)'],
3186: ['anonsurvey','Anonymous Survey'],
3187: ['anonsurveycred','Anonymous Survey (with credit)'],
1.428 raeburn 3188: ['problem','Homework Problem'],
1.479 raeburn 3189: ['practice','Practice Problem'],
3190: ['randomizetry','New Randomization Each Try'] ]
1.248 albertel 3191: ,$token);
3192: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3193: } elsif ($target eq 'modified') {
3194: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3195: $safeeval,'mode','for');
3196: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3197: }
3198: return $result;
3199: }
3200:
3201: sub end_problemtype {
1.159 albertel 3202: return '';
1.24 albertel 3203: }
1.34 albertel 3204:
3205: sub start_startouttext {
1.159 albertel 3206: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3207: my @result=(''.'');
3208: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 3209:
3210: my $nesting =
3211: &Apache::lonxml::set_state('outtext',
3212: &Apache::lonxml::get_state('outtext')+1);
3213: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
3214: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
3215: }
1.159 albertel 3216: return (@result);
1.34 albertel 3217: }
1.159 albertel 3218:
1.34 albertel 3219: sub end_startouttext {
1.326 albertel 3220: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 3221: my $result='';
3222: my $text='';
3223: if ($target eq 'edit') {
1.424 foxr 3224: my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326 albertel 3225: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.512.2.11 raeburn 3226: $result.=&Apache::edit::start_table($token)."<tr><td>".&Apache::loncommon::insert_folding_button()
3227: ." ".&mt('Text Block')."</td>"
1.438 bisitz 3228: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437 raeburn 3229: .&Apache::edit::deletelist($target,$token)
1.474 raeburn 3230: .'</span></td>'
1.512.2.12 raeburn 3231: .'<td><span id="math_'.$areaid.'">';
3232: if ($env{'environment.nocodemirror'}) {
3233: $result.=&Apache::lonhtmlcommon::dragmath_button($areaid,1);
3234: } else {
3235: $result.=' ';
3236: }
3237: $result.='</span></td>'
1.474 raeburn 3238: .'<td>'
3239: .&Apache::edit::insertlist($target,$token)
3240: .'</td>'
1.512.2.5 raeburn 3241: .'<td class="LC_edit_problem_latexhelper">' .
1.474 raeburn 3242: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 3243: &Apache::edit::end_row().
1.362 albertel 3244: &Apache::edit::start_spanning_row()."\n".
1.255 www 3245: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 3246: }
3247: if ($target eq 'modified') {
1.219 albertel 3248: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 3249: }
3250: if ($target eq 'tex') {
3251: $result .= '\noindent ';
3252: }
3253: return $result;
1.34 albertel 3254: }
1.159 albertel 3255:
1.34 albertel 3256: sub start_endouttext {
1.159 albertel 3257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3258: my $result='';
3259: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
3260: if ($target eq "modified") {
3261: $result='<endouttext />'.
1.377 albertel 3262: &Apache::edit::handle_insertafter('startouttext');
3263: }
1.404 albertel 3264:
3265: my $nesting =
3266: &Apache::lonxml::set_state('outtext',
3267: &Apache::lonxml::get_state('outtext')-1);
3268: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
3269: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
3270: &Apache::lonxml::set_state('outtext', 0);
3271: }
1.159 albertel 3272: return $result;
1.34 albertel 3273: }
1.159 albertel 3274:
1.34 albertel 3275: sub end_endouttext {
1.159 albertel 3276: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3277: my @result=('','');
3278: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
3279: return (@result);
1.34 albertel 3280: }
1.159 albertel 3281:
1.45 albertel 3282: sub delete_startouttext {
1.326 albertel 3283: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
3284: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 3285: my $text=$$parser['-1']->get_text("/endouttext");
3286: my $ntoken=$$parser['-1']->get_token();
3287: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
3288: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
3289: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
3290: # they did the last time round
3291: &Apache::lonxml::increasedepth($ntoken);
3292: &Apache::lonxml::decreasedepth($ntoken);
3293: return 1;
1.193 www 3294: }
3295:
3296: sub start_simpleeditbutton {
3297: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
3298: my $result='';
1.284 albertel 3299: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 3300: ($target eq 'web') &&
1.330 albertel 3301: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 3302: my $url=$env{'request.noversionuri'};
1.193 www 3303: $url=~s/\?.*$//;
1.367 albertel 3304: my ($symb) = &Apache::lonnet::whichuser();
1.451 bisitz 3305: # Warning makes more sense and is more important on edit screen
1.442 bisitz 3306: # $result='<p class="LC_warning">'
3307: # .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
3308: # .&Apache::loncommon::help_open_topic('Caching')
3309: # .'</p>';
1.486 www 3310: $result.=&Apache::loncommon::head_subbox(
3311: &Apache::lonhtmlcommon::start_funclist()
1.451 bisitz 3312: .&Apache::lonhtmlcommon::add_item_funclist(
3313: '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
3314: .&mt('Edit').'</a>')
1.486 www 3315: .&Apache::lonhtmlcommon::end_funclist());
1.442 bisitz 3316:
1.193 www 3317: }
3318: return $result;
3319: }
3320:
3321: sub end_simpleeditbutton {
3322: return '';
1.45 albertel 3323: }
1.34 albertel 3324:
1.428 raeburn 3325: sub practice_problem_header {
3326: return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
3327: '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
3328: '</span>';
3329: }
3330:
1.479 raeburn 3331: sub randomizetry_problem_header {
1.512.2.21 raeburn 3332: my ($problemstatus,$reqtries,$symb) = @_;
1.479 raeburn 3333: my ($header,$text);
3334: if ($reqtries > 1) {
3335: $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
3336: if (($problemstatus eq 'no') ||
3337: ($problemstatus eq 'no_feedback_ever')) {
3338: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
3339: } else {
3340: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
3341: }
3342: } else {
3343: $header = &mt('New Problem Variation Each Try');
3344: if (($problemstatus eq 'no') ||
3345: ($problemstatus eq 'no_feedback_ever')) {
3346: $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
3347:
3348: } else {
3349: $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
3350: }
3351: }
1.512.2.21 raeburn 3352: if (($env{'request.state'} eq "construct") || ($symb eq '')) {
3353: return '<div class="LC_info" id="LC_randomizetry_header" style="display:none">'.
3354: '<h3>'.$header.'</h3><span class="LC_info">'.$text.'</span><hr /></div>';
3355: } else {
3356: return '<h3 class="LC_info">'.$header.'</h3>'.
3357: '<span class="LC_info">'.$text.'</span><hr />';
3358: }
1.479 raeburn 3359: }
3360:
3361: sub randomizetry_part_header {
3362: my ($problemstatus,$reqtries,$num) = @_;
3363: my ($header,$text);
3364: if ($reqtries eq 'none') {
3365: $header = &mt('No Question Variation');
1.512.2.23 raeburn 3366: $text = &mt('For this question there will be no new variation after a try.');
1.479 raeburn 3367: } elsif ($reqtries > 1) {
3368: $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
3369: if (($problemstatus eq 'no') ||
3370: ($problemstatus eq 'no_feedback_ever')) {
3371: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
3372: } else {
3373: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
3374: }
3375: } else {
3376: $header = &mt('New Question Variation For Each Try');
3377: if (($problemstatus eq 'no') ||
3378: ($problemstatus eq 'no_feedback_ever')) {
3379: $text = &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
3380: } else {
3381: $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
3382: }
3383: }
3384: my $output;
3385: if ($num > 1) {
3386: $output .= '<hr />';
3387: }
3388: $output .= '<span class="LC_info"><h4>'.$header.'</h4></span>'.
3389: '<span class="LC_info">'.$text.'</span><br /><br />';
3390: return $output;
3391: }
3392:
1.1 albertel 3393: 1;
3394: __END__
1.435 jms 3395:
3396: =pod
3397:
3398: =back
3399:
3400: =cut
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