Annotation of loncom/homework/structuretags.pm, revision 1.488
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.488 ! www 4: # $Id: structuretags.pm,v 1.487 2011/02/06 18:43:10 www 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();
1.267 albertel 64: use Time::HiRes qw( gettimeofday tv_interval );
1.356 www 65: use lib '/home/httpd/lib/perl/';
66: use LONCAPA;
67:
1.78 harris41 68: BEGIN {
1.469 www 69: &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 70: }
71:
72: sub start_web {
1.326 albertel 73: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383 albertel 74: if ($target ne 'edit' && $target ne 'modified') {
75: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
76: if ($target eq 'web' || $target eq 'webgrade') {
77: return $bodytext;
78: }
79: } elsif ($target eq "edit" ) {
80: my $bodytext =
81: &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
82: my $result = &Apache::edit::tag_start($target,$token);
83: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
84: return $result;
85: } elsif ( $target eq "modified" ) {
86: return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159 albertel 87: }
88: return '';
1.10 albertel 89: }
90:
91: sub end_web {
1.44 ng 92: return '';
1.10 albertel 93: }
94:
95: sub start_tex {
1.326 albertel 96: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198 sakharuk 97: my $result='';
1.383 albertel 98: if ($target ne 'edit' && $target ne 'modified') {
99: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
100: if ($target eq 'tex') {
1.434 foxr 101:
102: # If inside a table, occurrences of \\ must be removed;
103: # else the table blows up.
104:
105: if (&Apache::londefdef::is_inside_of($tagstack, "table")) {
106: $bodytext =~ s/\\\\//g;
107: }
1.432 foxr 108: return $bodytext.'{}';
1.383 albertel 109: }
110: } elsif ($target eq "edit" ) {
111: my $bodytext =
112: &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
113: my $result = &Apache::edit::tag_start($target,$token);
114: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
115: return $result;
116: } elsif ( $target eq "modified" ) {
117: return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159 albertel 118: }
1.198 sakharuk 119: return $result;;
1.10 albertel 120: }
121:
122: sub end_tex {
1.44 ng 123: return '';
1.9 albertel 124: }
125:
1.400 albertel 126: sub homework_js {
127: return &Apache::loncommon::resize_textarea_js().
1.416 raeburn 128: &setmode_javascript().
1.400 albertel 129: <<'JS';
130: <script type="text/javascript">
1.483 raeburn 131: // <![CDATA[
1.400 albertel 132: function setSubmittedPart (part) {
133: this.document.lonhomework.submitted.value="part_"+part;
134: }
135:
136: function image_response_click (which, e) {
137: init_geometry();
138: if (!e) { e = window.event; } //IE
139: var input_element = document.lonhomework.elements[which];
1.401 albertel 140: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 141: var token = token_element.value;
1.401 albertel 142: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 143: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
144: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
145: var click = x+':'+y;
146: input_element.value = click;
1.485 raeburn 147: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
1.400 albertel 148: }
1.483 raeburn 149: // ]]>
1.400 albertel 150: </script>
151: JS
152: }
153:
1.416 raeburn 154: sub setmode_javascript {
155: return <<"ENDSCRIPT";
156: <script type="text/javascript">
1.485 raeburn 157: // <![CDATA[
1.416 raeburn 158: function setmode(form,probmode) {
159: form.problemmode.value = probmode;
160: form.submit();
161: }
1.485 raeburn 162: // ]]>
1.416 raeburn 163: </script>
164: ENDSCRIPT
165: }
166:
1.478 raeburn 167: sub file_delchk_js {
1.484 raeburn 168: my $delfilewarn = &mt('You have indicated you wish to remove some files previously included in your submission.').'\\n'.
169: &mt('Continue submission with these files removed?');
1.478 raeburn 170: return <<"ENDSCRIPT";
171: <script type="text/javascript">
1.483 raeburn 172: // <![CDATA[
1.478 raeburn 173: function file_deletion_check(formname) {
174: var elemnum = formname.elements.length;
175: if (elemnum == 0) {
176: return true;
177: }
1.482 raeburn 178: var str = new RegExp("^HWFILE.+_delete\$");
179: var delboxes = new Array();
180: for (var i=0; i<formname.elements.length; i++) {
1.478 raeburn 181: var id = formname.elements[i].id;
182: if (id != '') {
183: if (str.test(id)) {
184: if (formname.elements[i].type == 'checkbox') {
185: if (formname.elements[i].checked) {
1.482 raeburn 186: delboxes.push(id);
1.478 raeburn 187: }
188: }
189: }
190: }
191: }
1.482 raeburn 192: if (delboxes.length > 0) {
1.478 raeburn 193: if (confirm("$delfilewarn")) {
194: return true;
195: } else {
1.482 raeburn 196: for (var j=0; j<delboxes.length; j++) {
197: formname.elements[delboxes[j]].checked = false;
198: }
1.478 raeburn 199: return false;
200: }
201: } else {
202: return true;
203: }
204: }
1.483 raeburn 205: // ]]>
1.478 raeburn 206: </script>
207: ENDSCRIPT
208: }
209:
1.48 albertel 210: sub page_start {
1.345 albertel 211: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
212: $extra_head)=@_;
1.159 albertel 213: my %found;
1.207 albertel 214: foreach my $taginside (@$tagstack) {
1.159 albertel 215: foreach my $taglookedfor ('html','body','form') {
216: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
217: }
218: }
219:
1.343 albertel 220: if ($target eq 'tex') {
221: return
222: &Apache::londefdef::start_html($target,$token,$tagstack,
223: $parstack,$parser,$safeeval);
224: }
225:
1.474 raeburn 226: $extra_head .= &homework_js().
227: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
228: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
229: my %textarea_args = (
230: dragmath => 'math',
231: );
232: $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1.425 raeburn 233: }
1.478 raeburn 234: my $is_task = ($env{'request.uri'} =~ /\.task$/);
235: if ($is_task) {
236: $extra_head .= &file_delchk_js();
237: }
1.425 raeburn 238:
1.344 albertel 239: my %body_args;
240: if (defined($found{'html'})) {
241: $body_args{'skip_phases'}{'head'}=1;
242: } else {
1.343 albertel 243:
1.345 albertel 244: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 245:
1.379 albertel 246: $extra_head .= &Apache::londefdef::generate_css_links();
247:
1.384 albertel 248: if ($env{'request.state'} eq 'construct') {
1.343 albertel 249: $extra_head.=&Apache::edit::js_change_detection().
250: "<script type=\"text/javascript\">\n".
251: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
252: &Apache::loncommon::browser_and_searcher_javascript().
253: "\n</script>\n";
254: }
1.159 albertel 255: }
1.343 albertel 256:
1.446 bisitz 257: my $pageheader = '';
1.344 albertel 258: if (defined($found{'body'})) {
259: $body_args{'skip_phases'}{'body'}=1;
260: } elsif (!defined($found{'body'})
261: && $env{'request.state'} eq 'construct') {
1.343 albertel 262: if ($target eq 'web' || $target eq 'edit') {
1.450 bisitz 263: # Breadcrumbs for Construction Space
264: &Apache::lonhtmlcommon::clear_breadcrumbs();
265: &Apache::lonhtmlcommon::add_breadcrumb({
266: 'text' => 'Construction Space',
267: 'href' => &Apache::loncommon::authorspace(),
268: });
1.460 droeschl 269: # breadcrumbs (and tools) will be created
270: # in start_page->bodytag->innerregister
271:
1.450 bisitz 272: # FIXME Where are we?
273: # &Apache::lonhtmlcommon::add_breadcrumb({
274: # 'text' => 'Problem Editing', # 'Problem Testing'
275: # 'href' => '',
276: # });
1.460 droeschl 277: $pageheader =&Apache::loncommon::head_subbox(
1.446 bisitz 278: &Apache::loncommon::CSTR_pageheader());
1.297 albertel 279: }
1.272 albertel 280: } elsif (!defined($found{'body'})) {
1.343 albertel 281: my %add_entries;
1.159 albertel 282: my $background=&Apache::lonxml::get_param('background',$parstack,
283: $safeeval);
1.343 albertel 284: if ($background ne '' ) {
285: $add_entries{'background'} = $background;
286: }
1.344 albertel 287:
1.290 albertel 288: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
289: $safeeval);
1.446 bisitz 290: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
1.344 albertel 291:
1.446 bisitz 292: $body_args{'bgcolor'} = $bgcolor;
293: # $body_args{'no_title'} = 1;
294: $body_args{'force_register'} = 1;
295: $body_args{'add_entries'} = \%add_entries;
1.466 droeschl 296: if ( $env{'request.state'} eq 'construct') {
1.446 bisitz 297: $body_args{'only_body'} = 1;
298: }
1.344 albertel 299: }
1.365 albertel 300: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 301: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
302: \%body_args);
1.446 bisitz 303: $page_start .= $pageheader;
1.462 raeburn 304: if (!defined($found{'body'})
305: && $env{'request.state'} ne 'construct'
306: && ($target eq 'web' || $target eq 'webgrade')) {
307:
308: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
309: if ($symb eq '' && !$publicuser) {
310: $page_start .= '<p class="LC_info">'
311: .&mt('Browsing resource, all submissions are temporary.')
312: .'</p>';
1.457 bisitz 313: }
1.344 albertel 314: }
315:
1.409 albertel 316: if (!defined($found{'body'}) && $env{'request.state'} ne 'construct') {
1.343 albertel 317: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 318: }
1.344 albertel 319:
1.159 albertel 320: my $form_tag_start;
321: if (!defined($found{'form'})) {
1.337 albertel 322: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.465 raeburn 323: my $uri = &Apache::loncommon::inhibit_menu_check(
1.455 droeschl 324: &Apache::lonenc::check_encrypt($env{'request.uri'}));
1.464 raeburn 325: $uri = &HTML::Entities::encode($uri,'<>&"');
1.327 albertel 326: $form_tag_start.=$uri.'" ';
327: if ($target eq 'edit') {
328: $form_tag_start.=&Apache::edit::form_change_detection();
329: }
1.478 raeburn 330: if ($is_task) {
331: $form_tag_start .= ' onsubmit="return file_deletion_check(this);"';
332: }
1.368 albertel 333: $form_tag_start.='>'."\n";
1.355 albertel 334:
335: my $symb=&Apache::lonnet::symbread();
336: if ($symb =~ /\S/) {
337: $symb=
338: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
339: $form_tag_start.=
1.368 albertel 340: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 341: }
1.159 albertel 342: }
1.343 albertel 343: return ($page_start,$form_tag_start);
1.105 albertel 344: }
345:
1.141 matthew 346: #use Time::HiRes();
1.105 albertel 347: sub get_resource_name {
1.159 albertel 348: my ($parstack,$safeeval)=@_;
1.388 foxr 349: my $name;
1.204 albertel 350: if (defined($Apache::lonhomework::name)) {
1.388 foxr 351: $name = $Apache::lonhomework::name;
352: } else {
353: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 354: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 355: if ($name eq '') {
356: $name=&Apache::lonnet::EXT('resource.title');
357: if ($name eq 'con_lost') { $name = ''; }
358: }
359: if ($name!~/\S+/) {
360: $name=$env{'request.uri'};
361: $name=~s-.*/([^/]+)$-$1-;
362: }
363: # The name has had html tags escaped:
364:
365: $name=~s/</</gs;
366: $name=~s/>/>/gs;
367:
368: $Apache::lonhomework::name=$name;
1.204 albertel 369: }
1.159 albertel 370: return $name;
1.105 albertel 371: }
372:
373: sub setup_rndseed {
1.479 raeburn 374: my ($safeeval,$target)=@_;
1.367 albertel 375: my ($symb)=&Apache::lonnet::whichuser();
1.479 raeburn 376: my ($questiontype,$set_safespace,$rndseed);
377: if ($target eq 'analyze') {
378: $questiontype = $env{'form.grade_questiontype'};
379: }
380: unless (defined($questiontype)) {
381: $questiontype = $Apache::lonhomework::type;
382: }
1.333 albertel 383: if ($env{'request.state'} eq "construct"
384: || $symb eq ''
385: || $Apache::lonhomework::type eq 'practice'
386: || $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 387: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 388: ['rndseed']);
1.284 albertel 389: $rndseed=$env{'form.rndseed'};
1.159 albertel 390: if (!$rndseed) {
1.162 albertel 391: $rndseed=$Apache::lonhomework::history{'rndseed'};
392: if (!$rndseed) {
393: $rndseed=time;
394: }
1.284 albertel 395: $env{'form.rndseed'}=$rndseed;
1.162 albertel 396: }
1.479 raeburn 397: if (($env{'request.state'} eq "construct") &&
398: ($Apache::lonhomework::type eq 'randomizetry')) {
399: my $tries = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.tries"};
400: if ($tries) {
401: $rndseed += $tries;
402: }
1.480 raeburn 403: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.479 raeburn 404: }
1.374 albertel 405: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
406: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 407: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 408: srand(time);
409: $rndseed=int(rand(2100000000));
1.284 albertel 410: $env{'form.rndseed'}=$rndseed;
411: delete($env{'form.resetdata'});
412: delete($env{'form.newrandomization'});
1.159 albertel 413: }
1.488 ! www 414: $rndseed=~s/\,/\:/g;
! 415: $rndseed=~s/[^\w\d\:\-]//g;
! 416: if ((defined($rndseed)) && ($rndseed!~/^[\d\-]+\:[\d\-]+/)) {
1.307 albertel 417: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 418: }
1.247 albertel 419: if ($Apache::lonhomework::history{'resource.CODE'}) {
420: $rndseed=&Apache::lonnet::rndseed();
421: }
1.479 raeburn 422: $set_safespace = 1;
423: } elsif ($questiontype eq 'randomizetry') {
424: if ($target eq 'analyze') {
425: if (defined($env{'form.grade_rndseed'})) {
426: $rndseed = $env{'form.grade_rndseed'};
427: }
428: }
429: unless (($target eq 'analyze') && (defined($rndseed))) {
430: $rndseed=&Apache::lonnet::rndseed();
431: my $curr_try = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.tries"};
432: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
433: $curr_try ++;
434: }
435: if ($rndseed =~/^(\d+)[,:](\d+)$/) {
436: $rndseed = $1;
437: }
438: if ($curr_try) {
439: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
440: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
441: my $inc = int(($curr_try-1)/$reqtries);
442: $rndseed += $inc;
443: } else {
444: $rndseed += $curr_try;
445: }
446: }
447: }
448: $set_safespace = 1;
449: }
450: if ($set_safespace) {
451: if ($safeeval) {
452: &Apache::lonxml::debug("Setting rndseed to $rndseed");
453: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
454: }
455: }
456: unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
457: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159 albertel 458: }
459: return $rndseed;
1.105 albertel 460: }
461:
1.268 albertel 462: sub remember_problem_state {
463: return '
1.284 albertel 464: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
465: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
466: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 467: }
468:
1.487 www 469: sub problem_edit_action_button {
470: my ($name,$action,$accesskey,$text,$flag)=@_;
471: my $actionscript="setmode(this.form,'$action')";
472: return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
473: ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
474: }
475:
1.423 www 476: sub problem_edit_buttons {
1.487 www 477: my ($mode)=@_;
478: # Buttons that do not save
479: my $result='<div class="LC_edit_problem_discards">'.
480: &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
481: if ($mode eq 'editxml') {
482: $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
483: $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
484: $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
485: } else {
486: $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
487: $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
488: }
489: $result.="\n</div>";
490: # Buttons that save
491: $result.='<div class="LC_edit_problem_saves">';
492: if ($mode eq 'editxml') {
493: $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
494: $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
495: } else {
496: $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
497: $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
498: }
499: $result.="\n</div>\n";
500: return $result;
1.423 www 501: }
502:
503: sub problem_edit_header {
1.487 www 504: return '<input type="hidden" name="submitted" value="edit" />'.
505: &remember_problem_state('edit').'
1.423 www 506: <div class="LC_edit_problem_header">
507: <div class="LC_edit_problem_header_title">
508: '.&mt('Problem Editing').&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
509: </div>'.
1.487 www 510: '<input type="hidden" name="problemmode" value="saveedit" />'.
1.423 www 511: &problem_edit_buttons().'
1.459 bisitz 512: <hr style="clear:both;" />
1.409 albertel 513: '.&Apache::lonxml::message_location().'
1.408 albertel 514: </div>
515: '.
1.458 bisitz 516: '<table border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
1.105 albertel 517: }
518:
519: sub problem_edit_footer {
1.412 albertel 520: return '</td></tr></table><br />
521: <div class="LC_edit_problem_footer">
1.453 bisitz 522: <hr />'.
1.423 www 523: &problem_edit_buttons().'
1.459 bisitz 524: <hr style="clear:both;" />
1.412 albertel 525: </div>
526: '.
1.342 albertel 527: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 528: }
529:
1.235 albertel 530: sub option {
531: my ($value,$name) = @_;
532: my $result ="<option value='".$value."' ";
1.284 albertel 533: if ($env{'form.'.$name} eq $value) {
1.235 albertel 534: $result.=" selected='on' ";
535: }
536: $result.='>';
537: return $result;
538: }
539:
1.105 albertel 540: sub problem_web_to_edit_header {
1.159 albertel 541: my ($rndseed)=@_;
1.406 albertel 542: my $result .= '<div class="LC_edit_problem_header">';
543:
544: if (!$Apache::lonhomework::parsing_a_task) {
545: $result .=
546: '<div class="LC_edit_problem_header_title">'.
547: &mt('Problem Testing').
548: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
549: '</div>';
550: } else {
551: $result .=
552: '<div class="LC_edit_problem_header_title">'.
553: &mt('Task Testing').
554: '</div>';
555: }
556:
1.315 albertel 557: my $show_all_foils_text =
558: ($Apache::lonhomework::parsing_a_task) ?
1.452 bisitz 559: &mt('Show All Instances')
560: : &mt('Show All Foils');
1.315 albertel 561:
1.452 bisitz 562: my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
563: .'<input type="checkbox" name="showallfoils"';
1.440 bisitz 564: if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452 bisitz 565: $show_all.= ' /> '.$show_all_foils_text
566: .'</label></span>';
1.406 albertel 567:
568:
1.384 albertel 569:
1.406 albertel 570: $result .= '<div class="LC_edit_problem_header_status_row">';
1.313 albertel 571: if (!$Apache::lonhomework::parsing_a_task) {
572: $result.="
1.406 albertel 573: <div class='LC_edit_problem_header_row1'>
574: <span class=\"LC_nobreak\">
1.405 albertel 575: ".&mt("Problem Status:")."
1.235 albertel 576: <select name='problemstate'>
1.270 albertel 577: <option value=''></option>
1.235 albertel 578: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
579: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
580: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
581: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
582: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
583: </select>
1.406 albertel 584: </span>
585: <span class=\"LC_nobreak\">
1.405 albertel 586: ".&mt("Problem Type:")."
1.235 albertel 587: <select name='problemtype'>
1.270 albertel 588: <option value=''></option>
1.242 albertel 589: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
1.428 raeburn 590: ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242 albertel 591: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465 raeburn 592: ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
593: ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
594: ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428 raeburn 595: ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479 raeburn 596: ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235 albertel 597: </select>
1.406 albertel 598: </span>
599: $show_all
600: </div>
601: <div class='LC_edit_problem_header_row2'>
602: <span class=\"LC_nobreak\">
1.405 albertel 603: ".&mt("Feedback Mode:")."
1.235 albertel 604: <select name='problemstatus'>
605: <option value=''></option>
1.242 albertel 606: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.405 albertel 607: ".&option('no', 'problemstatus').&mt("Don't Show Incorect/Correct Feedback")."</option>
608: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 609: </select>
1.406 albertel 610: </span>
611: ";
612:
1.376 albertel 613: } elsif ($Apache::lonhomework::parsing_a_task) {
614: $result.="
1.406 albertel 615: <div class='LC_edit_problem_header_row1'>
616: <span class=\"LC_nobreak\">
1.405 albertel 617: ".&mt("Problem Status:")."
1.376 albertel 618: <select name='problemstate'>
619: <option value=''></option>
620: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
621: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
622: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
623: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
624: </select>
1.406 albertel 625: </span>
626: $show_all
627: ";
628: }
629: $result.='
630: <span class="LC_nobreak">
631: '.&mt('Apply style file: ').'
632: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
633: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
634: </span>
1.422 www 635: </div>
636: <div class="LC_edit_problem_header_row1">'.
637: &Apache::lonxml::renderingoptions().'
1.406 albertel 638: </div>
639: <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
640: <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
641: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
642: </div>
1.453 bisitz 643: <hr />
1.406 albertel 644: <div class="LC_edit_problem_header_randomize_row">
645: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
646: <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488 ! www 647: <input type="text" name="rndseed" size="24" value="'.
1.406 albertel 648: $rndseed.'"
649: onchange="javascript:document.lonhomework.changerandseed.click()" />';
650:
651: if (!$Apache::lonhomework::parsing_a_task) {
652: my $numtoanalyze=$env{'form.numtoanalyze'};
653: if (!$numtoanalyze) { $numtoanalyze=20; }
1.408 albertel 654: $result .= '<span class="LC_nobreak">'.
655: &mt('[_1] for [_2] versions.',
1.416 raeburn 656: '<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419 bisitz 657: 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
658: ,'<input type="text" name="numtoanalyze" value="'.
1.408 albertel 659: $numtoanalyze.'" size="5" />').
660: &Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
661: '</span>';
662:
1.313 albertel 663: }
1.406 albertel 664:
665: $result.='
666: </div>
1.453 bisitz 667: <hr />
1.447 bisitz 668: <div>';
1.416 raeburn 669: $result.='<input type="hidden" name="problemmode" value="view" />';
670: $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
671: 'onclick="javascript:setmode(this.form,'."'edit'".')" />';
672: $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
673: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408 albertel 674: $result.='
675: </div>
1.453 bisitz 676: <hr />
1.409 albertel 677: '.&Apache::lonxml::message_location().'
1.406 albertel 678: </div>';
1.159 albertel 679: return $result;
1.48 albertel 680: }
681:
1.65 albertel 682: sub initialize_storage {
1.357 albertel 683: my ($given_symb) = @_;
1.353 albertel 684: undef(%Apache::lonhomework::results);
685: undef(%Apache::lonhomework::history);
1.357 albertel 686: my ($symb,$courseid,$domain,$name) =
1.367 albertel 687: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 688:
689: # anonymous users (CODEd exams) have no data
690: if ($name eq 'anonymous'
691: && !defined($domain)) {
692: return;
693: }
694:
1.333 albertel 695: if ($env{'request.state'} eq 'construct'
696: || $symb eq ''
697: || $Apache::lonhomework::type eq 'practice') {
698:
699: my $namespace = $symb || $env{'request.uri'};
700: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 701: ($env{'form.resetdata'} eq &mt('New Problem Variation')
702: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 703: $env{'form.newrandomization'} eq &mt('New Randomization')) {
704: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
705: &Apache::lonxml::debug("Attempt reset");
706: }
1.159 albertel 707: %Apache::lonhomework::history=
1.333 albertel 708: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 709: my ($temp)=keys %Apache::lonhomework::history ;
710: &Apache::lonxml::debug("Return message of $temp");
711: } else {
712: %Apache::lonhomework::history=
713: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
714: }
1.353 albertel 715:
1.159 albertel 716: #ignore error conditions
1.67 albertel 717: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 718: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 719: }
720:
1.435 jms 721: =pod
722:
723: =item finalize_storage()
724:
725: Stores away the result has to a student's environment
726: checks form.grade_ for specific values, other wises stores
727: to the running users environment
728: Will increment totals for attempts, students, and corrects
729: if running user has student role.
730:
731: =cut
732:
733:
1.65 albertel 734: sub finalize_storage {
1.357 albertel 735: my ($given_symb) = @_;
1.159 albertel 736: my $result;
1.289 albertel 737: if (%Apache::lonhomework::results) {
1.323 albertel 738: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
739: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 740: my ($symb,$courseid,$domain,$name) =
1.367 albertel 741: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 742: if ($env{'request.state'} eq 'construct'
743: || $symb eq ''
744: || $Apache::lonhomework::type eq 'practice') {
745: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 746: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 747: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 748: $namespace,'',$domain,$name);
1.159 albertel 749: &Apache::lonxml::debug('Construct Store return message:'.$result);
750: } else {
751: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
752: $symb,$courseid,$domain,$name);
753: &Apache::lonxml::debug('Store return message:'.$result);
1.470 raeburn 754: &store_aggregates($symb,$courseid);
1.159 albertel 755: }
1.323 albertel 756: } else {
757: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 758: }
1.159 albertel 759: return $result;
1.65 albertel 760: }
761:
1.435 jms 762: =pod
763:
764: item store_aggregates()
765:
766: Sends hash of values to be incremented in nohist_resourcetracker.db
767: for the course. Increments total number of attempts, unique students
768: and corrects for each part for an instance of a problem, as appropriate.
769:
770: =cut
771:
1.285 raeburn 772: sub store_aggregates {
773: my ($symb,$courseid) = @_;
1.479 raeburn 774: my (%aggregate,%anoncounter,%randtrycounter);
1.286 albertel 775: my @parts;
1.288 albertel 776: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
777: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 778: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 779: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 780: push(@parts, $1);
1.285 raeburn 781: }
782: }
1.286 albertel 783: foreach my $part (@parts) {
1.470 raeburn 784: if ($env{'request.role'} =~/^st/) {
785: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
786: eq 'APPROX_ANS' ||
787: $Apache::lonhomework::results{'resource.'.$part.'.award'}
788: eq 'EXACT_ANS') {
789: $aggregate{$symb."\0".$part."\0correct"} = 1;
790: }
791: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
792: $aggregate{$symb."\0".$part."\0users"} = 1;
793: } else {
794: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
795: if ($last_reset) {
796: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
797: $aggregate{$symb."\0".$part."\0users"} = 1;
798: }
799: }
800: }
801: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 802: }
1.470 raeburn 803: if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') ||
1.479 raeburn 804: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
805: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
806: if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
807: $randtrycounter{$symb."\0".$part} = 1;
808: } else {
809: $anoncounter{$symb."\0".$part} = 1;
810: }
1.470 raeburn 811: my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
812: if ($needsrelease) {
813: my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
814: if ($curr_required eq '') {
1.471 raeburn 815: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 816: } else {
817: my ($currmajor,$currminor) = split(/\./,$curr_required);
818: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
819: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471 raeburn 820: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 821: }
1.292 raeburn 822: }
823: }
1.285 raeburn 824: }
825: }
1.292 raeburn 826: if (keys (%aggregate) > 0) {
1.289 albertel 827: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 828: $cdomain,$cname);
829: }
1.472 raeburn 830: if (keys(%anoncounter) > 0) {
1.481 raeburn 831: &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
832: $cdomain,$cname);
1.472 raeburn 833: }
1.479 raeburn 834: if (keys(%randtrycounter) > 0) {
1.481 raeburn 835: &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
836: $cdomain,$cname);
1.479 raeburn 837: }
1.292 raeburn 838: }
1.289 albertel 839:
1.65 albertel 840: sub checkout_msg {
1.211 albertel 841: my %lt=&Apache::lonlocal::texthash(
842: 'resource'=>'The resource needs to be checked out',
843: '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.',
844: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
845: 'checkout'=>'Check out Exam for Viewing',
846: 'checkout?'=>'Check out Exam?');
1.352 albertel 847: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 848: return (<<ENDCHECKOUT);
1.211 albertel 849: <h2>$lt{'resource'}</h2>
850: <p>$lt{'id_expln'}</p>
1.449 bisitz 851: <p class="LC_warning">$lt{'warning'}</p>
1.444 bisitz 852: <form name="checkout" method="post" action="$uri">
1.91 albertel 853: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 854: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 855: </form>
856: ENDCHECKOUT
857: }
858:
1.252 albertel 859: sub firstaccess_msg {
1.253 albertel 860: my ($time,$symb)=@_;
1.414 albertel 861: my $result;
862: my @interval=&Apache::lonnet::EXT("resource.0.interval");
863: if ($interval[1] eq 'map') {
864: my ($map)=&Apache::lonnet::decode_symb($symb);
865: my $foldertitle=&Apache::lonnet::gettitle($map);
866:
867: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.418 bisitz 868: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.'
869: .' Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
870: ,$foldertitle,$time)."</h2>";
1.414 albertel 871: } elsif ($interval[1] eq 'course') {
872: my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.418 bisitz 873: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.'
874: .' Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
875: ,$course,$time)."</h2>";
1.414 albertel 876: } else {
877: my $title=&Apache::lonnet::gettitle($symb);
1.418 bisitz 878: $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.'
879: .' Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
880: ,$title,$time)."</h2>";
1.414 albertel 881: }
1.352 albertel 882: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418 bisitz 883: my $buttontext = &mt('Show Resource');
884: my $timertext = &mt('Start Timer?');
1.414 albertel 885: $result .= (<<ENDCHECKOUT);
1.444 bisitz 886: <form name="markaccess" method="post" action="$uri">
1.252 albertel 887: <input type="hidden" name="markaccess" value="yes" />
1.418 bisitz 888: <input type="button" name="accessbutton" value="$buttontext" onClick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252 albertel 889: </form>
890: ENDCHECKOUT
1.414 albertel 891: return $result;
1.252 albertel 892: }
893:
1.204 albertel 894: sub init_problem_globals {
895: my ($type)=@_;
896: #initialize globals
1.308 foxr 897: # For problems, we start out in part 0 (outside a <part> tag).
898: # and part 0 is used to describe the main body of the <problem>
899: #
1.204 albertel 900: if ($type eq 'problem') {
901: $Apache::inputtags::part='0';
902: @Apache::inputtags::partlist=('0');
1.405 albertel 903: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 904: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 905:
1.266 albertel 906: } elsif ($type eq 'library') {
1.204 albertel 907: $Apache::inputtags::part='';
908: @Apache::inputtags::partlist=();
1.405 albertel 909: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 910: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 911:
1.304 albertel 912: } elsif ($type eq 'Task') {
913: $Apache::inputtags::part='0';
914: @Apache::inputtags::partlist=('0');
1.405 albertel 915: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 916: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 917: }
1.477 www 918: @Apache::functionplotresponse::callscripts=();
1.204 albertel 919: @Apache::inputtags::responselist = ();
920: @Apache::inputtags::importlist = ();
921: @Apache::inputtags::previous=();
922: @Apache::inputtags::previous_version=();
923: $Apache::structuretags::printanswer='No';
924: @Apache::structuretags::whileconds=();
925: @Apache::structuretags::whilebody=();
926: @Apache::structuretags::whileline=();
927: $Apache::lonhomework::scantronmode=0;
928: undef($Apache::lonhomework::name);
1.358 albertel 929: undef($Apache::lonhomework::default_type);
930: undef($Apache::lonhomework::type);
1.204 albertel 931: }
932:
933: sub reset_problem_globals {
934: my ($type)=@_;
935: undef(%Apache::lonhomework::history);
936: undef(%Apache::lonhomework::results);
937: undef($Apache::inputtags::part);
1.208 albertel 938: #don't undef this, lonhomework.pm takes care of this, we use this to
939: #detect if we try to do 2 problems in one file
940: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 941: undef($Apache::lonhomework::name);
1.358 albertel 942: undef($Apache::lonhomework::default_type);
943: undef($Apache::lonhomework::type);
944: undef($Apache::lonhomework::scantronmode);
945: undef($Apache::lonhomework::ignore_response_errors);
1.477 www 946: undef(@Apache::functionplotresponse::callscripts);
1.405 albertel 947: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 948: }
949:
1.241 albertel 950: sub set_problem_state {
1.240 albertel 951: my ($part)=@_;
1.284 albertel 952: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 953: $Apache::lonhomework::history{"resource.$part.solved"}=
954: 'correct_by_student';
955: }
956: }
957:
1.241 albertel 958: sub get_problem_status {
959: my ($part)=@_;
1.267 albertel 960: my $problem_status;
1.284 albertel 961: if ($env{'request.state'} eq 'construct' &&
962: defined($env{'form.problemstatus'})) {
963: $problem_status=$env{'form.problemstatus'};
1.267 albertel 964: } else {
965: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
966: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 967: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 968: }
969: return $problem_status;
970: }
971:
1.9 albertel 972: sub start_problem {
1.326 albertel 973: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 974:
1.311 foxr 975: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 976: if (!$Apache::lonxml::metamode) {
977: &Apache::lonxml::startredirection();
978: }
1.311 foxr 979:
1.308 foxr 980: # Problems don't nest and we don't allow more than one <problem> in
981: # a .problem file.
982: #
1.184 albertel 983: if ( $Apache::inputtags::part ne '' ||
984: $Apache::lonhomework::parsing_a_problem) {
985: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 986: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 987: return '';
988: }
1.184 albertel 989:
990: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 991: &init_problem_globals('problem');
1.166 albertel 992:
1.284 albertel 993: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 994: $Apache::lonhomework::scantronmode=1;
995: }
1.161 albertel 996:
1.159 albertel 997: if ($target ne 'analyze') {
1.415 raeburn 998: my $type = &Apache::lonnet::EXT('resource.0.type');
999: $Apache::lonhomework::type=$type;
1.284 albertel 1000: if (($env{'request.state'} eq 'construct') &&
1.410 albertel 1001: $env{'form.problemtype'} =~ /\S/) {
1.284 albertel 1002: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 1003: }
1.332 albertel 1004: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 1005: }
1.164 albertel 1006: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 1007: my $uri=$env{'request.uri'};
1.159 albertel 1008: if ($uri=~/\.(\w+)$/) {
1009: $Apache::lonhomework::type=$1;
1010: &Apache::lonxml::debug("Using type of $1");
1011: } else {
1012: $Apache::lonhomework::type='problem';
1013: &Apache::lonxml::debug("Using default type, problem, :$uri:");
1014: }
1.87 albertel 1015: }
1.301 albertel 1016: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 1017:
1.363 albertel 1018: &initialize_storage();
1.389 albertel 1019: if ($target ne 'analyze'
1020: && $env{'request.state'} eq 'construct') {
1021: &set_problem_state('0');
1022: }
1023:
1.366 albertel 1024: if ($target eq 'web') {
1025: &Apache::lonxml::debug(" grading history ");
1026: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1027: }
1.363 albertel 1028:
1.159 albertel 1029: #added vars to the scripting enviroment
1.213 albertel 1030: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 1031: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 1032: &Apache::run::run($expression,$safeeval);
1.159 albertel 1033: my $status;
1034: my $accessmsg;
1035:
1.343 albertel 1036: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 1037: my ($result,$form_tag_start);
1.354 albertel 1038: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
1039: || $target eq 'edit') {
1.350 albertel 1040: ($result,$form_tag_start) =
1041: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1042: $name);
1043: }
1044:
1.284 albertel 1045: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 1046:
1.479 raeburn 1047: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159 albertel 1048: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1049: $target eq 'tex') {
1.284 albertel 1050: if ($env{'form.markaccess'}) {
1.414 albertel 1051: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1052: &Apache::lonnet::set_first_access($interval[1]);
1.252 albertel 1053: }
1.479 raeburn 1054:
1055: ($status,$accessmsg,my $slot_name,my $slot) =
1056: &Apache::lonhomework::check_slot_access('0','problem');
1057: push (@Apache::inputtags::status,$status);
1058:
1.159 albertel 1059: #handle rand seed in construction space
1.479 raeburn 1060: my $rndseed=&setup_rndseed($safeeval,$target);
1.367 albertel 1061: my ($symb)=&Apache::lonnet::whichuser();
1.479 raeburn 1062:
1.333 albertel 1063: if ($env{'request.state'} ne "construct" &&
1064: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 1065: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.462 raeburn 1066: $rndseed.'" />'.
1067: '<input type="submit" name="resetdata"
1068: value="'.&mt('New Problem Variation').'" />';
1.334 albertel 1069: if (exists($env{'form.username'})) {
1070: $form_tag_start.=
1.164 albertel 1071: '<input type="hidden" name="username"
1.284 albertel 1072: value="'.$env{'form.username'}.'" />';
1.334 albertel 1073: }
1.462 raeburn 1074: if ($env{'request.role.adv'}) {
1075: $form_tag_start.= ' <label class="LC_nobreak">'
1076: .'<input type="checkbox" name="showallfoils"';
1077: if (defined($env{'form.showallfoils'})) {
1078: $form_tag_start.=' checked="checked"';
1079: }
1080: $form_tag_start.= ' /> '
1081: .&mt('Show All Foils')
1082: .'</label>';
1083: }
1.417 www 1084: if ($Apache::lonhomework::type eq 'practice') {
1.428 raeburn 1085: $form_tag_start.=&practice_problem_header();
1.417 www 1086: }
1.462 raeburn 1087: $form_tag_start.='<hr />';
1.479 raeburn 1088: } elsif (($env{'request.state'} ne "construct") &&
1089: ($Apache::lonhomework::type eq 'randomizetry') &&
1090: ($status eq 'CAN_ANSWER')) {
1091: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1092: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1093: $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries);
1094: }
1.324 albertel 1095:
1.159 albertel 1096: my $expression='$external::datestatus="'.$status.'";';
1097: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
1098: &Apache::run::run($expression,$safeeval);
1099: &Apache::lonxml::debug("Got $status");
1.324 albertel 1100:
1.159 albertel 1101: if (( $status eq 'CLOSED' ) ||
1102: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1103: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 1104: ( $status eq 'BANNED') ||
1.216 albertel 1105: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 1106: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 1107: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1108: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1109: $style);
1.159 albertel 1110: if ( $target eq "web" ) {
1.343 albertel 1111: my $msg;
1.159 albertel 1112: if ($status eq 'UNAVAILABLE') {
1.245 albertel 1113: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.441 raeburn 1114: } elsif ($status eq 'NOT_IN_A_SLOT') {
1115: $msg.='<h1>'.&mt('You are not currently signed up to work at this time and/or place.').'</h1>';
1.253 albertel 1116: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 1117: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 1118: }
1.216 albertel 1119: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 1120: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 1121: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 1122: $msg.=&checkout_msg();
1.252 albertel 1123: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 1124: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 1125: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.441 raeburn 1126: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.159 albertel 1127: }
1128: $result.=$msg.'<br />';
1129: } elsif ($target eq 'tex') {
1.332 albertel 1130: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
1131: : '\begin{minipage}{\textwidth}';
1.443 foxr 1132: $result.='\noindent \vskip 1 mm '.
1.332 albertel 1133: $startminipage.'\vskip 0 mm';
1.159 albertel 1134: if ($status eq 'UNAVAILABLE') {
1.211 albertel 1135: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 1136: } else {
1.211 albertel 1137: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 1138: }
1139: }
1.324 albertel 1140: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 1141: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1142: $style);
1.324 albertel 1143: if ($target eq 'web') {
1.375 albertel 1144: $result .=
1145: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 1146: } elsif ($target eq 'grade') {
1147: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
1148: 'problem');
1149: }
1.159 albertel 1150: } elsif ($target eq 'web') {
1.360 albertel 1151: if ($status eq 'CAN_ANSWER'
1152: && $slot_name ne ''
1153: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
1154: # unproctored slot access, self checkin
1155: &Apache::bridgetask::check_in('problem',undef,undef,
1156: $slot_name);
1157: }
1.368 albertel 1158: $result.="\n $form_tag_start \t".
1.227 albertel 1159: '<input type="hidden" name="submitted" value="yes" />';
1160: # create a page header and exit
1.284 albertel 1161: if ($env{'request.state'} eq "construct") {
1162: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428 raeburn 1163: if ($Apache::lonhomework::type eq 'practice') {
1164: $result.= '<input type="submit" name="resetdata" '.
1165: 'value="'.&mt('New Problem Variation').'" />'.
1166: &practice_problem_header().'<hr />';
1167: }
1.227 albertel 1168: }
1169: # if we are viewing someone else preserve that info
1.284 albertel 1170: if (defined $env{'form.grade_symb'}) {
1.227 albertel 1171: foreach my $field ('symb','courseid','domain','username') {
1172: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 1173: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 1174: }
1.479 raeburn 1175: foreach my $field ('trial','questiontype') {
1176: if ($env{"form.grade_$field"} ne '') {
1177: $result .= '<input type="hidden" name="grade_'.$field.
1178: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1179: }
1180: }
1.159 albertel 1181: }
1182: } elsif ($target eq 'tex') {
1.319 foxr 1183: $result .= 'INSERTTEXFRONTMATTERHERE';
1184:
1.99 sakharuk 1185: }
1.159 albertel 1186: } elsif ($target eq 'edit') {
1.343 albertel 1187: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 1188: $Apache::lonxml::warnings_error_header=
1189: &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 1190: my $temp=&Apache::edit::insertlist($target,$token);
1191: $result.=$temp;
1192: } elsif ($target eq 'modified') {
1193: $result=$token->[4];
1194: } else {
1195: # page_start returned a starting result, delete it if we don't need it
1196: $result = '';
1.99 sakharuk 1197: }
1.159 albertel 1198: return $result;
1.9 albertel 1199: }
1200:
1201: sub end_problem {
1.159 albertel 1202: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 1203: my $result;
1.310 foxr 1204:
1.321 albertel 1205: if (!$Apache::lonxml::metamode) {
1206: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 1207: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1208: }
1.319 foxr 1209:
1210: if ($target eq 'tex') {
1.321 albertel 1211: # Figure out the front matter and replace the
1212: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
1213: # this in end_problem because whether or not we display due
1214: # dates depends on whether due dates have already been
1215: # displayed in the problem parts.
1216:
1.319 foxr 1217: my $frontmatter = '';
1218: my $startminipage = '';
1219: if (not $env{'form.problem_split'}=~/yes/) {
1220: $startminipage = '\begin{minipage}{\textwidth}';
1221: }
1222: my $id = $Apache::inputtags::part;
1223: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1224: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1225: my @packages = split /,/,$packages;
1226: my $allow_print_points = 0;
1227: foreach my $partial_key (@packages) {
1228: if ($partial_key=~m/^part_0$/) {
1229: $allow_print_points=1;
1230: }
1231: }
1232: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1233: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
1234: if (lc($env{'course.'.$env{'request.course.id'}.
1235: '.disableexampointprint'}) eq 'yes') {
1236: $allow_print_points=0;
1237: }
1238: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443 foxr 1239: my $begin_doc=' \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
1.319 foxr 1240: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
1241: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
1242:
1243: # Figure out what the due date is and if we need to print
1244: # it in the problem header. We have been logging the
1245: # last due date written to file.
1246:
1247: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
1248: my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448 bisitz 1249: my $duedate_text = &mt('Due date: [_1]'
1250: ,&Apache::lonlocal::locallocaltime($duetime));
1.319 foxr 1251: my $temp_file;
1252: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
1253:
1254: # Figure out what the last printed due date is or set it
1255: # to the epoch if no duedates have been printed.
1256:
1257: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
1258: if (-e $filename) {
1259: $temp_file = Apache::File->new($filename);
1260: my @due_file = <$temp_file>;
1261: $due_file_content = $due_file[$#due_file];
1262: chomp $due_file_content;
1263: }
1264:
1265: # We display the due date iff it is not the same as the last
1266: # duedate in problem header ($due_file_content), and
1267: # none of our parts displayed a duedate.
1268: #
1269: my $parts_with_displayduedate;
1270: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
1271: $parts_with_displayduedate =
1272: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
1273: } else {
1274: $parts_with_displayduedate = 0;
1275: }
1276: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
1277: $temp_file = Apache::File->new('>'.$filename);
1278: print $temp_file "$duetime\n";
1279: if (not $env{'request.symb'} =~ m/\.page_/) {
1280: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1281: $frontmatter .= $begin_doc.
1.448 bisitz 1282: '\textit{'.$duedate_text.'} '.$toc_line;
1.319 foxr 1283: } else {
1284: $frontmatter.= $begin_doc.$toc_line;
1.463 foxr 1285: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) {
1286: $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';
1287: }
1.319 foxr 1288: }
1289: } else {
1.448 bisitz 1290: $frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319 foxr 1291: }
1292: } else {
1293: if (not $env{'request.symb'} =~ m/\.page_/) {
1294: $frontmatter .= $begin_doc.$toc_line;
1.463 foxr 1295: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) {
1296: $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';
1297: }
1.319 foxr 1298: } else {
1.381 albertel 1299: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 1300: }
1301: }
1302: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
1303: }
1304:
1.159 albertel 1305: my $status=$Apache::inputtags::status['-1'];
1306: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
1307: $target eq 'tex') {
1.249 albertel 1308: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 1309: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 1310: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
1311: &Apache::inputtags::grade;
1.324 albertel 1312: } elsif ($status eq 'NEEDS_CHECKIN') {
1313: # no need to grade, and don't want to hide data
1.249 albertel 1314: } else {
1315: # move any submission data to .hidden
1316: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1317: }
1.159 albertel 1318: } elsif ( ($target eq 'web' || $target eq 'tex') &&
1319: $Apache::inputtags::part eq '0' &&
1.252 albertel 1320: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 1321: # if part is zero, no <part>s existed, so we need show the current
1322: # grading status
1323: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
1324: $result.= $gradestatus;
1325: }
1326: if (
1.284 albertel 1327: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 1328: ($target eq 'answer') || ($target eq 'tex')
1329: ) {
1.227 albertel 1330: if ($target ne 'tex' &&
1.284 albertel 1331: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 1332: $result.="</form>";
1.159 albertel 1333: }
1334: if ($target eq 'web') {
1.346 albertel 1335: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1336: } elsif ($target eq 'tex') {
1.178 sakharuk 1337: my $endminipage = '';
1.284 albertel 1338: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 1339: $endminipage = '\end{minipage}';
1340: }
1.284 albertel 1341: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 1342: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 1343: } else {
1.262 sakharuk 1344: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 1345: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 1346: $result .= $endminipage.'\end{document} ';
1347: } else {
1.382 albertel 1348: $result .= $endminipage;
1.262 sakharuk 1349: }
1.159 albertel 1350: }
1351: }
1352: }
1.476 www 1353: if ($target eq 'web') {
1354: $result.=&Apache::functionplotresponse::init_script();
1355: }
1.159 albertel 1356: if ($target eq 'grade') {
1357: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1358: &finalize_storage();
1359: }
1.284 albertel 1360: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
1361: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 1362: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 1363: # normally we get it from above, but in CSTR
1.172 albertel 1364: # we always show answer mode too.
1.159 albertel 1365: }
1366: } elsif ($target eq 'meta') {
1367: if ($Apache::inputtags::part eq '0') {
1.179 albertel 1368: @Apache::inputtags::response=();
1.159 albertel 1369: $result=&Apache::response::mandatory_part_meta;
1370: }
1.215 albertel 1371: $result.=&Apache::response::meta_part_order();
1.258 albertel 1372: $result.=&Apache::response::meta_response_order();
1.159 albertel 1373: } elsif ($target eq 'edit') {
1374: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1375: $result .= &problem_edit_footer();
1.320 albertel 1376: } elsif ($target eq 'modified') {
1377: $result .= $token->[2];
1.159 albertel 1378: }
1.155 albertel 1379:
1.284 albertel 1380: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1381: &Apache::inputtags::check_for_duplicate_ids();
1382: }
1.204 albertel 1383:
1384: &reset_problem_globals('problem');
1.159 albertel 1385:
1386: return $result;
1.48 albertel 1387: }
1388:
1.108 albertel 1389:
1.48 albertel 1390: sub start_library {
1.159 albertel 1391: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1392: my ($result,$form_tag_start);
1.371 albertel 1393: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1394: &init_problem_globals('library');
1395: $Apache::lonhomework::type='problem';
1396: }
1.159 albertel 1397: if ($target eq 'edit') {
1.343 albertel 1398: ($result,$form_tag_start)=
1399: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1400: 'Edit');
1401: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1402: my $temp=&Apache::edit::insertlist($target,$token);
1403: $result.=$temp;
1404: } elsif ($target eq 'modified') {
1405: $result=$token->[4];
1.340 albertel 1406: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1407: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1408: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1409: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1410: ($result,$form_tag_start)=
1411: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1412: $name);
1.479 raeburn 1413: my $rndseed=&setup_rndseed($safeeval,$target);
1.343 albertel 1414: $result.=" \n $form_tag_start".
1.159 albertel 1415: '<input type="hidden" name="submitted" value="yes" />';
1416: $result.=&problem_web_to_edit_header($rndseed);
1.428 raeburn 1417: if ($Apache::lonhomework::type eq 'practice') {
1418: $result.= '<input type="submit" name="resetdata" '.
1419: 'value="'.&mt('New Problem Variation').'" />'.
1420: &practice_problem_header().'<hr />';
1421: }
1.159 albertel 1422: }
1423: return $result;
1.48 albertel 1424: }
1425:
1426: sub end_library {
1.159 albertel 1427: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1428: my $result='';
1429: if ($target eq 'edit') {
1430: $result=&problem_edit_footer();
1.371 albertel 1431: } elsif ($target eq 'web'
1432: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1433: && $env{'request.state'} eq "construct") {
1.349 albertel 1434: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1435: }
1.371 albertel 1436: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1437: &reset_problem_globals('library');
1438: }
1.159 albertel 1439: return $result;
1.197 www 1440: }
1441:
1442: sub start_definetag {
1.326 albertel 1443: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1444:
1445: my $result;
1446:
1447: my $name = $token->[2]->{'name'};
1.326 albertel 1448: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1449: if ($target eq 'web') {
1450: if ($name=~/^\//) {
1451: $result=
1452: '<br /><table class="LC_sty_end"><tr><th>'.
1453: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1454: } else {
1455: $result=
1456: '<br /><table class="LC_sty_begin"><tr><th>'.
1457: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1458: }
1459: $skip = &HTML::Entities::encode($skip, '<>&"');
1460: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1461: }
1462: return $result;
1463: }
1464:
1465: sub end_definetag {
1466: return '';
1.1 albertel 1467: }
1468:
1469: sub start_block {
1.201 albertel 1470: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1471:
1472: my $result;
1.1 albertel 1473:
1.339 albertel 1474: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1475: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1476: my $code = $token->[2]->{'condition'};
1.385 albertel 1477: if (defined($code) && $code ne '') {
1.137 albertel 1478: if (!$Apache::lonxml::default_homework_loaded) {
1479: &Apache::lonxml::default_homework_load($safeeval);
1480: }
1.131 albertel 1481: $result = &Apache::run::run($code,$safeeval);
1482: &Apache::lonxml::debug("block :$code: returned :$result:");
1483: } else {
1484: $result='1';
1485: }
1486: if ( ! $result ) {
1.201 albertel 1487: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1488: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1489: }
1490: $result='';
1491: } elsif ($target eq 'edit') {
1492: $result .=&Apache::edit::tag_start($target,$token);
1493: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1494: $token,40);
1495: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1496: } elsif ($target eq 'modified') {
1497: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1498: $safeeval,'condition');
1499: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1500: }
1.131 albertel 1501: return $result;
1.1 albertel 1502: }
1503:
1504: sub end_block {
1.167 www 1505: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1506: my $result;
1507: if ($target eq "edit") {
1508: $result.= &Apache::edit::tag_end($target,$token,'');
1509: }
1510: return $result;
1511: }
1512:
1513: sub start_languageblock {
1.201 albertel 1514: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1515:
1516: my $result;
1517:
1.339 albertel 1518: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1519: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1520: my $include = $token->[2]->{'include'};
1521: my $exclude = $token->[2]->{'exclude'};
1.436 raeburn 1522: my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.394 www 1523: # This should not even happen, since we should at least have the server language
1.398 www 1524: if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
1525: # Now loop over all languages in order of preference
1526: foreach my $preferred_language (@preferred_languages) {
1.394 www 1527: # If the languageblock has no arguments, show the contents
1.399 www 1528: $result=1;
1529: my $found=0;
1.394 www 1530: # Do we have an include argument?
1.398 www 1531: if ($include) {
1.394 www 1532: # If include is specified, by default, don't render the block
1.399 www 1533: $result=0;
1.398 www 1534: foreach my $included_language (split(/\,/,$include)) {
1.394 www 1535: # ... but if my preferred language is included, render it
1.398 www 1536: if ($included_language eq $preferred_language) {
1.399 www 1537: $result=1;
1538: $found=1;
1.398 www 1539: }
1540: }
1541: }
1.394 www 1542: # Do we have an exclude argument?
1.398 www 1543: if ($exclude) {
1.399 www 1544: $result=1;
1.398 www 1545: foreach my $excluded_language (split(/\,/,$exclude)) {
1546: if ($excluded_language eq $preferred_language) {
1.399 www 1547: $result=0;
1548: $found=1;
1.398 www 1549: }
1550: }
1551: }
1.399 www 1552: if ($found) { last; }
1.398 www 1553: }
1.201 albertel 1554: if ( ! $result ) {
1555: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1556: $style);
1557: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1558: }
1559: $result='';
1.167 www 1560: } elsif ($target eq 'edit') {
1561: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1562: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1563: $token,40);
1.211 albertel 1564: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1565: $token,40);
1566: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1567: } elsif ($target eq 'modified') {
1568: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1569: $safeeval,'include',
1570: 'exclude');
1.167 www 1571: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1572: }
1573: return $result;
1574: }
1575:
1576: sub end_languageblock {
1.170 www 1577: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1578: my $result;
1.201 albertel 1579: if ($target eq "edit") {
1.170 www 1580: $result.= &Apache::edit::tag_end($target,$token,'');
1581: }
1582: return $result;
1583: }
1584:
1.397 albertel 1585: {
1586: my %available_texts;
1587: sub start_translated {
1588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1589: &Apache::lonxml::register('Apache::structuretags',('lang'));
1590: undef(%available_texts);
1591: }
1592:
1593: sub end_translated {
1594: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1595: my $result;
1596: #show the translation on viewable targets
1597: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1598: # or non-viewable targets, if it's embedded in something that
1599: # wants the output
1600: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1601: && &Apache::lonxml::in_redirection() ) ) {
1602: my @possibilities = keys(%available_texts);
1603: my $which =
1604: &Apache::loncommon::languages(\@possibilities) || 'default';
1605: $result = $available_texts{$which};
1606: }
1607: undef(%available_texts);
1608: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1609: return $result;
1610: }
1611:
1612:
1613: sub start_lang {
1614: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1615: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1616: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1617: &Apache::lonxml::startredirection();
1618: }
1619: return '';
1620: }
1621:
1622: sub end_lang {
1623: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1624: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1625: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1626: my $result = &Apache::lonxml::endredirection();
1627: my $which = &Apache::lonxml::get_param('which',$parstack,
1628: $safeeval);
1.431 raeburn 1629: if ($which=~/\w/) {
1630: $available_texts{$which} = $result;
1631: }
1632: my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
1633: $safeeval);
1634: foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
1635: if ($language=~/\w/) {
1636: $available_texts{$language} = $result;
1637: }
1.427 bisitz 1638: }
1639:
1.397 albertel 1640: }
1641: return '';
1642: }
1643: }
1644:
1.170 www 1645: sub start_instructorcomment {
1.201 albertel 1646: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1647:
1648: my $result;
1649:
1.339 albertel 1650: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1651: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468 raeburn 1652: $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284 albertel 1653: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1654: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1655: $parser,$style);
1.170 www 1656: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1657: }
1658: $result='';
1659: } elsif ($target eq 'edit') {
1660: $result .=&Apache::edit::tag_start($target,$token);
1661: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1662: }
1663: return $result;
1664: }
1665:
1666: sub end_instructorcomment {
1.159 albertel 1667: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1668: my $result;
1669: if ($target eq "edit") {
1670: $result.= &Apache::edit::tag_end($target,$token,'');
1671: }
1672: return $result;
1.4 tsai 1673: }
1674:
1675: sub start_while {
1.326 albertel 1676: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1677:
1.160 albertel 1678: my $result;
1.339 albertel 1679: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1680: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1681: my $code = $token->[2]->{'condition'};
1.4 tsai 1682:
1.160 albertel 1683: push( @Apache::structuretags::whileconds, $code);
1684: if (!$Apache::lonxml::default_homework_loaded) {
1685: &Apache::lonxml::default_homework_load($safeeval);
1686: }
1687: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1688: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1689: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1690: push( @Apache::structuretags::whileline, $token->[5]);
1691: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1692: if ( $result ) {
1693: &Apache::lonxml::newparser($parser,\$bodytext);
1694: }
1695: } elsif ($target eq 'edit') {
1696: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1697: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1698: $token,40);
1699: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1700: } elsif ($target eq 'modified') {
1701: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1702: $safeeval,'condition');
1703: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1704: }
1.160 albertel 1705: return $result;
1.4 tsai 1706: }
1707:
1708: sub end_while {
1.159 albertel 1709: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1710: my $result;
1711:
1.339 albertel 1712: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1713: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1714: my $code = pop(@Apache::structuretags::whileconds);
1715: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1716: my $line = pop(@Apache::structuretags::whileline);
1717: my $return = &Apache::run::run($code,$safeeval);
1718: my $starttime=time;
1719: my $error=0;
1720: while ($return) {
1721: if (time-$starttime >
1722: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1723: $return = 0; $error=1; next;
1.161 albertel 1724: }
1725: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1726: if ($target eq 'grade' || $target eq 'answer' ||
1727: $target eq 'analyze') {
1728: # grade/answer/analyze should produce no output but if we
1729: # are redirecting, the redirecter should know what to do
1730: # with the output
1731: if (!$Apache::lonxml::redirection) { undef($result); }
1732: }
1.161 albertel 1733: $return = &Apache::run::run($code,$safeeval);
1734: }
1735: if ($error) {
1.430 bisitz 1736: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occurred while running <while> on line').' '.$line.'</pre>');
1.160 albertel 1737: }
1738: } elsif ($target eq "edit") {
1739: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1740: }
1.160 albertel 1741: return $result;
1.1 albertel 1742: }
1.6 tsai 1743:
1.160 albertel 1744: # <randomlist show="1">
1.6 tsai 1745: # <tag1>..</tag1>
1746: # <tag2>..</tag2>
1747: # <tag3>..</tag3>
1.160 albertel 1748: # ...
1.6 tsai 1749: # </randomlist>
1750: sub start_randomlist {
1.326 albertel 1751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1752: my $result;
1.339 albertel 1753: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1754: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1755: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1756: my $b_parser= HTML::LCParser->new(\$body);
1757: $b_parser->xml_mode(1);
1758: $b_parser->marked_sections(1);
1.159 albertel 1759: my $b_tok;
1760: my @randomlist;
1761: my $list_item;
1762: while($b_tok = $b_parser->get_token() ) {
1763: if($b_tok->[0] eq 'S') { # start tag
1764: # get content of the tag until matching end tag
1765: # get all text upto the matching tag
1766: # and push the content into @randomlist
1767: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1768: $b_parser);
1769: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1770: push(@randomlist,$list_item);
1771: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1772: # $list_item</b>";
1773: }
1774: if($b_tok->[0] eq 'T') { # text
1775: # what to do with text in between tags?
1776: # print "<b>TEXT $b_tok->[1]</b><br />";
1777: }
1778: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1779: # print "<b>END-TAG $b_tok->[1]</b><br />";
1780: # }
1781: }
1.303 albertel 1782: if (@randomlist) {
1783: my @idx_arr = (0 .. $#randomlist);
1784: &Apache::structuretags::shuffle(\@idx_arr);
1785: my $bodytext = '';
1786: my $show=$#randomlist;
1787: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1788: $showarg--;
1789: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439 raeburn 1790: if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
1791: my @currlist;
1792: my $part = $Apache::inputtags::part;
1793: if ($part ne '') {
1794: if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
1795: my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
1796: if (!(grep(/^\Q$part\E$/,@currlist))) {
1797: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
1798: }
1799: } else {
1800: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
1801: }
1802: }
1803: }
1.303 albertel 1804: for(0 .. $show) {
1805: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1806: }
1807: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1808: }
1809: } elsif ($target eq 'edit' ) {
1810: $result .=&Apache::edit::tag_start($target,$token);
1811: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1812: $token,5);
1813: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1814: } elsif ($target eq 'modified' ) {
1815: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1816: $safeeval,'show');
1817: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1818: }
1819: return $result;
1.7 tsai 1820: }
1821:
1822: sub shuffle {
1823: my $a=shift;
1824: my $i;
1.303 albertel 1825: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1826: &Apache::response::pushrandomnumber();
1.159 albertel 1827: for($i=@$a;--$i;) {
1828: my $j=int(&Math::Random::random_uniform() * ($i+1));
1829: next if $i == $j;
1830: @$a[$i,$j] = @$a[$j,$i];
1831: }
1.251 albertel 1832: &Apache::response::poprandomnumber();
1.7 tsai 1833: }
1.6 tsai 1834: }
1835:
1836: sub end_randomlist {
1.159 albertel 1837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1838: my $result;
1839: if ($target eq 'edit' ) {
1840: $result=&Apache::edit::tag_end($target,$token,
1841: 'End Randomly Parsed Block');
1842: }
1843: return $result;
1.6 tsai 1844: }
1845:
1.283 albertel 1846: sub ordered_show_check {
1847: my $last_part=$Apache::inputtags::partlist[-2];
1848: my $in_order=
1849: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1850: my $in_order_show=1;
1851: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1852: $in_order_show=&Apache::response::check_status($last_part);
1853: }
1854: return $in_order_show;
1855: }
1856:
1.469 www 1857:
1858: sub start_startpartmarker {
1859: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1860: my $result='';
1861: if ($target eq 'edit') {
1862: $result=&Apache::edit::tag_start($target,$token);
1863: $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
1864: $result.=&Apache::edit::end_table();
1865:
1866: }
1867: return $result;
1868: }
1869:
1870: sub end_startpartmarker {
1871: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1872: my @result;
1873: if ($target eq 'edit') { $result[1]='no'; }
1874: return @result;
1875: }
1876:
1877: sub start_endpartmarker {
1878: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1879: my $result='';
1880: if ($target eq 'edit') {
1881: $result=&Apache::edit::tag_start($target,$token);
1882: $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
1883: $result.=&Apache::edit::end_table();
1884:
1885: }
1886: return $result;
1887: }
1888:
1889: sub end_endpartmarker {
1890: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1891: my @result;
1892: if ($target eq 'edit') { $result[1]='no'; }
1893: return @result;
1894: }
1895:
1896:
1897:
1898:
1899:
1.11 albertel 1900: sub start_part {
1.326 albertel 1901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 1902: if (!$Apache::lonxml::metamode) {
1903: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1904: # duedates.
1905: }
1.159 albertel 1906: my $result='';
1.386 albertel 1907: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 1908: $Apache::inputtags::part=$id;
1.177 albertel 1909: push(@Apache::inputtags::partlist,$id);
1910: @Apache::inputtags::response=();
1.159 albertel 1911: @Apache::inputtags::previous=();
1912: @Apache::inputtags::previous_version=();
1.405 albertel 1913: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 1914: &Apache::response::reset_params();
1915:
1.159 albertel 1916: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1917: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1918: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1919: my $in_order_show=&ordered_show_check();
1.214 albertel 1920: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1921: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1922: &Apache::run::run($expression,$safeeval);
1.159 albertel 1923:
1924: if ($target eq 'meta') {
1.224 www 1925: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1926: return &Apache::response::mandatory_part_meta.
1927: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1928: } elsif ($target eq 'web' || $target eq 'grade' ||
1929: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1930: if ($hidden || !$in_order_show) {
1.326 albertel 1931: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 1932: } else {
1933: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1934: push (@Apache::inputtags::status,$status);
1935: my $expression='$external::datestatus="'.$status.'";';
1936: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1937: &Apache::run::run($expression,$safeeval);
1.284 albertel 1938: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1939: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1940: }
1.216 albertel 1941: if (( $status eq 'CLOSED' ) ||
1942: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1943: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1944: ( $status eq 'BANNED') ||
1945: ( $status eq 'UNAVAILABLE') ||
1946: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1947: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
1948: $style);
1.159 albertel 1949: if ( $target eq "web" ) {
1.211 albertel 1950: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1951: } elsif ( $target eq 'tex' ) {
1.284 albertel 1952: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1953: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1954: } else {
1.211 albertel 1955: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1956: }
1.159 albertel 1957: }
1958: } else {
1959: if ($target eq 'tex') {
1.284 albertel 1960: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1961: if ($$tagstack[-2] eq 'td') {
1.388 foxr 1962: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 1963: } else {
1964: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1965: }
1.195 sakharuk 1966: }
1.159 albertel 1967: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1968: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1969: my @allkeys = split /,/,$allkeys;
1970: my $allow_print_points = 0;
1971: foreach my $partial_key (@allkeys) {
1.230 albertel 1972: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1973: if ($1 ne '0') {$allow_print_points=1;}
1974: }
1975: }
1.275 albertel 1976: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1977: if (defined($maxtries) && $maxtries < 0) {
1978: $allow_print_points=0;
1979: }
1.302 albertel 1980: if (lc($env{'course.'.$env{'request.course.id'}.
1981: '.disableexampointprint'}) eq 'yes') {
1982: $allow_print_points=0;
1983: }
1.463 foxr 1984: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) {
1985: $result .= '\vskip 10mm\fbox{\textit{'.$weight.' pt}}';
1986:
1987: }
1.233 www 1988: } elsif ($target eq 'web') {
1.479 raeburn 1989: if ($status eq 'CAN_ANSWER') {
1990: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1991: my $probrandomize = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].type");
1992: my $probrandtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].randomizeontries");
1993: my $num = scalar(@Apache::inputtags::partlist)-1;
1994: if ($probrandomize eq 'randomizetry') {
1995: if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") ne 'randomizetry') {
1996: $result .= &randomizetry_part_header($problemstatus,'none',$num);
1997: } else {
1998: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1999: if ($probrandtries ne $reqtries) {
2000: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
2001: }
2002: }
2003: } elsif (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") eq 'randomizetry') {
2004: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
2005: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
2006: }
2007: }
1.475 raeburn 2008: $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159 albertel 2009: }
2010: }
2011: }
2012: } elsif ($target eq 'edit') {
2013: $result.=&Apache::edit::tag_start($target,$token);
2014: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
2015: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 2016: ' '.
2017: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 2018: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
2019: } elsif ($target eq 'modified') {
2020: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 2021: $safeeval,'id','display');
1.159 albertel 2022: if ($constructtag) {
1.225 albertel 2023: #limiting ids to only letters numbers, and space
1.224 www 2024: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 2025: $result = &Apache::edit::rebuild_tag($token);
2026: }
2027: }
2028: return $result;
1.11 albertel 2029: }
2030:
2031: sub end_part {
1.159 albertel 2032: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2033: &Apache::lonxml::debug("in end_part $target ");
2034: my $status=$Apache::inputtags::status['-1'];
2035: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 2036: my $in_order_show=&ordered_show_check();
1.321 albertel 2037: my $result;
2038: if (!$Apache::lonxml::metamode) {
2039: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 2040: $Apache::lonxml::post_evaluate=0;
1.321 albertel 2041: }
1.312 albertel 2042: if ($target eq 'grade') {
1.249 albertel 2043: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 2044: !$hidden && $in_order_show) {
1.311 foxr 2045: $result.=&Apache::inputtags::grade;
1.249 albertel 2046: } else {
2047: # move any submission data to .hidden
2048: &Apache::inputtags::hidealldata($Apache::inputtags::part);
2049: }
1.283 albertel 2050: } elsif (($target eq 'web' || $target eq 'tex') &&
2051: !$hidden && $in_order_show) {
1.159 albertel 2052: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
2053: $target);
1.212 albertel 2054: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
2055: $gradestatus='';
2056: }
1.311 foxr 2057: $result.=$gradestatus;
1.265 sakharuk 2058: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 2059: } elsif ($target eq 'edit') {
1.311 foxr 2060: $result.=&Apache::edit::end_table();
1.322 albertel 2061: } elsif ($target eq 'modified') {
2062: $result .= $token->[2];
1.159 albertel 2063: }
2064: pop @Apache::inputtags::status;
2065: $Apache::inputtags::part='';
1.295 albertel 2066: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 2067: return $result;
1.11 albertel 2068: }
1.1 albertel 2069:
1.25 albertel 2070: sub start_preduedate {
1.326 albertel 2071: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 2072: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2073: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 2074: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 2075: if (!$Apache::lonhomework::scantronmode &&
2076: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 2077: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
2078: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 2079: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 2080: }
1.24 albertel 2081: }
1.159 albertel 2082: return '';
1.24 albertel 2083: }
2084:
1.25 albertel 2085: sub end_preduedate {
1.159 albertel 2086: return '';
1.24 albertel 2087: }
2088:
1.369 foxr 2089: # In all the modes where <postanswerdate> text is
2090: # displayable, all we do is eat up the text between the start/stop
2091: # tags if the conditions are not right to display it.
1.25 albertel 2092: sub start_postanswerdate {
1.326 albertel 2093: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 2094: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
2095: &Apache::lonnet::allowed('pav',
2096: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 2097: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 2098: $target eq 'tex' ) {
1.300 albertel 2099: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 2100: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
2101: (($target eq 'tex') && !$pav)) {
1.326 albertel 2102: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 2103: }
2104: }
2105: return '';
1.24 albertel 2106: }
2107:
1.25 albertel 2108: sub end_postanswerdate {
1.159 albertel 2109: return '';
1.24 albertel 2110: }
2111:
1.25 albertel 2112: sub start_notsolved {
1.326 albertel 2113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2114: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 2115: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 2116: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
2117: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 2118: if ($gradestatus =~ /^correct/ &&
2119: &Apache::response::show_answer()) {
1.159 albertel 2120: &Apache::lonxml::debug("skipping");
1.326 albertel 2121: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 2122: }
1.24 albertel 2123: }
1.159 albertel 2124: return '';
1.24 albertel 2125: }
2126:
1.25 albertel 2127: sub end_notsolved {
1.159 albertel 2128: return '';
1.24 albertel 2129: }
2130:
2131: sub start_solved {
1.326 albertel 2132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2133: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2134: $target eq 'tex') {
2135: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 2136: if ($gradestatus !~ /^correct/ ||
2137: !&Apache::response::show_answer()) {
1.326 albertel 2138: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 2139: }
1.24 albertel 2140: }
1.159 albertel 2141: return '';
1.24 albertel 2142: }
2143:
2144: sub end_solved {
1.248 albertel 2145: return '';
2146: }
2147:
2148: sub start_problemtype {
1.326 albertel 2149: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 2150: my $result;
1.339 albertel 2151: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2152: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 2153: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
2154: if (!defined($mode)) { $mode='show'; }
2155: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
2156: my $found=0;
2157: foreach my $type (split(',',$for)) {
2158: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
2159: }
2160: if ($mode eq 'show' && !$found) {
1.326 albertel 2161: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 2162: }
2163: if ($mode eq 'hide' && $found) {
1.326 albertel 2164: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 2165: }
2166: } elsif ($target eq 'edit') {
2167: $result .=&Apache::edit::tag_start($target,$token);
2168: $result.=&Apache::edit::select_arg('Mode:','mode',
2169: [['show','Show'],
2170: ['hide','Hide']]
2171: ,$token);
2172: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
2173: [ ['exam','Exam/Quiz Problem'],
2174: ['survey','Survey'],
1.465 raeburn 2175: ['surveycred','Survey (with credit)'],
2176: ['anonsurvey','Anonymous Survey'],
2177: ['anonsurveycred','Anonymous Survey (with credit)'],
1.428 raeburn 2178: ['problem','Homework Problem'],
1.479 raeburn 2179: ['practice','Practice Problem'],
2180: ['randomizetry','New Randomization Each Try'] ]
1.248 albertel 2181: ,$token);
2182: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2183: } elsif ($target eq 'modified') {
2184: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2185: $safeeval,'mode','for');
2186: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2187: }
2188: return $result;
2189: }
2190:
2191: sub end_problemtype {
1.159 albertel 2192: return '';
1.24 albertel 2193: }
1.34 albertel 2194:
2195: sub start_startouttext {
1.159 albertel 2196: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2197: my @result=(''.'');
2198: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 2199:
2200: my $nesting =
2201: &Apache::lonxml::set_state('outtext',
2202: &Apache::lonxml::get_state('outtext')+1);
2203: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
2204: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
2205: }
1.159 albertel 2206: return (@result);
1.34 albertel 2207: }
1.159 albertel 2208:
1.34 albertel 2209: sub end_startouttext {
1.326 albertel 2210: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2211: my $result='';
2212: my $text='';
2213: if ($target eq 'edit') {
1.424 foxr 2214: my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326 albertel 2215: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.437 raeburn 2216: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>"
1.438 bisitz 2217: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437 raeburn 2218: .&Apache::edit::deletelist($target,$token)
1.474 raeburn 2219: .'</span></td>'
2220: .'<td align="left"><span id="math_'.$areaid.'" />'
2221: .&Apache::lonhtmlcommon::dragmath_button($areaid,1)
2222: .'<span></td>'
2223: .'<td>'
2224: .&Apache::edit::insertlist($target,$token)
2225: .'</td>'
2226: .'<td align="right" valign="top">' .
2227: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 2228: &Apache::edit::end_row().
1.362 albertel 2229: &Apache::edit::start_spanning_row()."\n".
1.255 www 2230: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 2231: }
2232: if ($target eq 'modified') {
1.219 albertel 2233: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 2234: }
2235: if ($target eq 'tex') {
2236: $result .= '\noindent ';
2237: }
2238: return $result;
1.34 albertel 2239: }
1.159 albertel 2240:
1.34 albertel 2241: sub start_endouttext {
1.159 albertel 2242: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2243: my $result='';
2244: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
2245: if ($target eq "modified") {
2246: $result='<endouttext />'.
1.377 albertel 2247: &Apache::edit::handle_insertafter('startouttext');
2248: }
1.404 albertel 2249:
2250: my $nesting =
2251: &Apache::lonxml::set_state('outtext',
2252: &Apache::lonxml::get_state('outtext')-1);
2253: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
2254: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
2255: &Apache::lonxml::set_state('outtext', 0);
2256: }
1.159 albertel 2257: return $result;
1.34 albertel 2258: }
1.159 albertel 2259:
1.34 albertel 2260: sub end_endouttext {
1.159 albertel 2261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2262: my @result=('','');
2263: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
2264: return (@result);
1.34 albertel 2265: }
1.159 albertel 2266:
1.45 albertel 2267: sub delete_startouttext {
1.326 albertel 2268: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2269: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 2270: my $text=$$parser['-1']->get_text("/endouttext");
2271: my $ntoken=$$parser['-1']->get_token();
2272: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
2273: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
2274: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
2275: # they did the last time round
2276: &Apache::lonxml::increasedepth($ntoken);
2277: &Apache::lonxml::decreasedepth($ntoken);
2278: return 1;
1.193 www 2279: }
2280:
2281: sub start_simpleeditbutton {
2282: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2283: my $result='';
1.284 albertel 2284: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 2285: ($target eq 'web') &&
1.330 albertel 2286: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 2287: my $url=$env{'request.noversionuri'};
1.193 www 2288: $url=~s/\?.*$//;
1.367 albertel 2289: my ($symb) = &Apache::lonnet::whichuser();
1.451 bisitz 2290: # Warning makes more sense and is more important on edit screen
1.442 bisitz 2291: # $result='<p class="LC_warning">'
2292: # .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
2293: # .&Apache::loncommon::help_open_topic('Caching')
2294: # .'</p>';
1.486 www 2295: $result.=&Apache::loncommon::head_subbox(
2296: &Apache::lonhtmlcommon::start_funclist()
1.451 bisitz 2297: .&Apache::lonhtmlcommon::add_item_funclist(
2298: '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
2299: .&mt('Edit').'</a>')
1.486 www 2300: .&Apache::lonhtmlcommon::end_funclist());
1.442 bisitz 2301:
1.193 www 2302: }
2303: return $result;
2304: }
2305:
2306: sub end_simpleeditbutton {
2307: return '';
1.45 albertel 2308: }
1.34 albertel 2309:
1.428 raeburn 2310: sub practice_problem_header {
2311: return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
2312: '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
2313: '</span>';
2314: }
2315:
1.479 raeburn 2316: sub randomizetry_problem_header {
2317: my ($problemstatus,$reqtries) = @_;
2318: my ($header,$text);
2319: if ($reqtries > 1) {
2320: $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
2321: if (($problemstatus eq 'no') ||
2322: ($problemstatus eq 'no_feedback_ever')) {
2323: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
2324: } else {
2325: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
2326: }
2327: } else {
2328: $header = &mt('New Problem Variation Each Try');
2329: if (($problemstatus eq 'no') ||
2330: ($problemstatus eq 'no_feedback_ever')) {
2331: $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
2332:
2333: } else {
2334: $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
2335: }
2336: }
2337: return '<span class="LC_info"><h3>'.$header.'</h3></span>'.
2338: '<span class="LC_info">'.$text.'</span><hr />';
2339: }
2340:
2341: sub randomizetry_part_header {
2342: my ($problemstatus,$reqtries,$num) = @_;
2343: my ($header,$text);
2344: if ($reqtries eq 'none') {
2345: $header = &mt('No Question Variation');
2346: $text = &mt('For this question there will no new variation after a try.');
2347: } elsif ($reqtries > 1) {
2348: $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
2349: if (($problemstatus eq 'no') ||
2350: ($problemstatus eq 'no_feedback_ever')) {
2351: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
2352: } else {
2353: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
2354: }
2355: } else {
2356: $header = &mt('New Question Variation For Each Try');
2357: if (($problemstatus eq 'no') ||
2358: ($problemstatus eq 'no_feedback_ever')) {
2359: $text = &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
2360: } else {
2361: $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
2362: }
2363: }
2364: my $output;
2365: if ($num > 1) {
2366: $output .= '<hr />';
2367: }
2368: $output .= '<span class="LC_info"><h4>'.$header.'</h4></span>'.
2369: '<span class="LC_info">'.$text.'</span><br /><br />';
2370: return $output;
2371: }
2372:
1.1 albertel 2373: 1;
2374: __END__
1.435 jms 2375:
2376: =pod
2377:
2378: =back
2379:
2380: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to structuretags.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework