Annotation of loncom/homework/structuretags.pm, revision 1.407
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.407 ! albertel 4: # $Id: structuretags.pm,v 1.406 2007/10/30 00:09:30 albertel 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:
1.133 sakharuk 30:
1.1 albertel 31: package Apache::structuretags;
32:
33: use strict;
34: use Apache::lonnet;
1.101 sakharuk 35: use Apache::File();
1.147 www 36: use Apache::lonmenu;
1.210 albertel 37: use Apache::lonlocal;
1.231 sakharuk 38: use Apache::lonxml;
1.338 albertel 39: use Apache::lonenc();
1.267 albertel 40: use Time::HiRes qw( gettimeofday tv_interval );
1.356 www 41: use lib '/home/httpd/lib/perl/';
42: use LONCAPA;
43:
1.78 harris41 44: BEGIN {
1.397 albertel 45: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','translated','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
1.10 albertel 46: }
47:
48: sub start_web {
1.326 albertel 49: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383 albertel 50: if ($target ne 'edit' && $target ne 'modified') {
51: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
52: if ($target eq 'web' || $target eq 'webgrade') {
53: return $bodytext;
54: }
55: } elsif ($target eq "edit" ) {
56: my $bodytext =
57: &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
58: my $result = &Apache::edit::tag_start($target,$token);
59: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
60: return $result;
61: } elsif ( $target eq "modified" ) {
62: return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159 albertel 63: }
64: return '';
1.10 albertel 65: }
66:
67: sub end_web {
1.44 ng 68: return '';
1.10 albertel 69: }
70:
71: sub start_tex {
1.326 albertel 72: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198 sakharuk 73: my $result='';
1.383 albertel 74: if ($target ne 'edit' && $target ne 'modified') {
75: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
76: if ($target eq 'tex') {
77: return $bodytext.' ';
78: }
79: } elsif ($target eq "edit" ) {
80: my $bodytext =
81: &Apache::lonxml::get_all_text_unbalanced("/tex",$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 $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159 albertel 87: }
1.198 sakharuk 88: return $result;;
1.10 albertel 89: }
90:
91: sub end_tex {
1.44 ng 92: return '';
1.9 albertel 93: }
94:
1.400 albertel 95: sub homework_js {
96: return &Apache::loncommon::resize_textarea_js().
97: <<'JS';
98: <script type="text/javascript">
99: function setSubmittedPart (part) {
100: this.document.lonhomework.submitted.value="part_"+part;
101: }
102:
103: function image_response_click (which, e) {
104: init_geometry();
105: if (!e) { e = window.event; } //IE
106: var input_element = document.lonhomework.elements[which];
1.401 albertel 107: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 108: var token = token_element.value;
1.401 albertel 109: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 110: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
111: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
112: var click = x+':'+y;
113: input_element.value = click;
114: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
115: }
116: </script>
117: JS
118: }
119:
1.48 albertel 120: sub page_start {
1.345 albertel 121: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
122: $extra_head)=@_;
1.159 albertel 123: my %found;
1.207 albertel 124: foreach my $taginside (@$tagstack) {
1.159 albertel 125: foreach my $taglookedfor ('html','body','form') {
126: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
127: }
128: }
129:
1.343 albertel 130: if ($target eq 'tex') {
131: return
132: &Apache::londefdef::start_html($target,$token,$tagstack,
133: $parstack,$parser,$safeeval);
134: }
135:
1.400 albertel 136: $extra_head .= &homework_js();
1.374 albertel 137:
1.344 albertel 138: my %body_args;
139: if (defined($found{'html'})) {
140: $body_args{'skip_phases'}{'head'}=1;
141: } else {
1.343 albertel 142:
1.345 albertel 143: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 144:
1.379 albertel 145: $extra_head .= &Apache::londefdef::generate_css_links();
146:
1.384 albertel 147: if ($env{'request.state'} eq 'construct') {
1.343 albertel 148: $extra_head.=&Apache::edit::js_change_detection().
149: "<script type=\"text/javascript\">\n".
150: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
151: &Apache::loncommon::browser_and_searcher_javascript().
152: "\n</script>\n";
153: }
1.159 albertel 154: }
1.343 albertel 155:
1.344 albertel 156: if (defined($found{'body'})) {
157: $body_args{'skip_phases'}{'body'}=1;
158: } elsif (!defined($found{'body'})
159: && $env{'request.state'} eq 'construct') {
1.343 albertel 160: if ($target eq 'web' || $target eq 'edit') {
1.402 albertel 161: if ($env{'environment.remote'} ne 'off') {
162: $body_args{'only_body'} = 1;
163: }
1.297 albertel 164: }
1.272 albertel 165: } elsif (!defined($found{'body'})) {
1.343 albertel 166: my %add_entries;
1.159 albertel 167: my $background=&Apache::lonxml::get_param('background',$parstack,
168: $safeeval);
1.343 albertel 169: if ($background ne '' ) {
170: $add_entries{'background'} = $background;
171: }
1.344 albertel 172:
1.290 albertel 173: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
174: $safeeval);
1.344 albertel 175: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
176:
177: $body_args{'bgcolor'} = $bgcolor;
178: $body_args{'no_title'} = 1;
179: $body_args{'force_register'} = 1;
180: $body_args{'add_entries'} = \%add_entries;
1.391 albertel 181: if ($env{'environment.remote'} eq 'off'
182: && $env{'request.state'} eq 'construct') {
183: $body_args{'only_body'} = 1;
184: }
1.344 albertel 185: }
1.365 albertel 186: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 187: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
188: \%body_args);
189:
190: if (!defined($found{'body'})
191: && $env{'request.state'} ne 'construct'
192: && ($target eq 'web' || $target eq 'webgrade')) {
193:
1.367 albertel 194: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344 albertel 195: if ($symb eq '' && !$publicuser) {
196: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
197: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
198: $page_start .= $help;
1.159 albertel 199: }
1.344 albertel 200: }
201:
202: if (!defined($found{'body'})) {
1.343 albertel 203: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 204: }
1.344 albertel 205:
1.159 albertel 206: my $form_tag_start;
207: if (!defined($found{'form'})) {
1.337 albertel 208: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338 albertel 209: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327 albertel 210: $form_tag_start.=$uri.'" ';
211: if ($target eq 'edit') {
212: $form_tag_start.=&Apache::edit::form_change_detection();
213: }
1.368 albertel 214: $form_tag_start.='>'."\n";
1.355 albertel 215:
216: my $symb=&Apache::lonnet::symbread();
217: if ($symb =~ /\S/) {
218: $symb=
219: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
220: $form_tag_start.=
1.368 albertel 221: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 222: }
1.159 albertel 223: }
1.343 albertel 224: return ($page_start,$form_tag_start);
1.105 albertel 225: }
226:
1.141 matthew 227: #use Time::HiRes();
1.105 albertel 228: sub get_resource_name {
1.159 albertel 229: my ($parstack,$safeeval)=@_;
1.388 foxr 230: my $name;
1.204 albertel 231: if (defined($Apache::lonhomework::name)) {
1.388 foxr 232: $name = $Apache::lonhomework::name;
233: } else {
234: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 235: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 236: if ($name eq '') {
237: $name=&Apache::lonnet::EXT('resource.title');
238: if ($name eq 'con_lost') { $name = ''; }
239: }
240: if ($name!~/\S+/) {
241: $name=$env{'request.uri'};
242: $name=~s-.*/([^/]+)$-$1-;
243: }
244: # The name has had html tags escaped:
245:
246: $name=~s/</</gs;
247: $name=~s/>/>/gs;
248:
249: $Apache::lonhomework::name=$name;
1.204 albertel 250: }
1.159 albertel 251: return $name;
1.105 albertel 252: }
253:
254: sub setup_rndseed {
1.159 albertel 255: my ($safeeval)=@_;
256: my $rndseed;
1.367 albertel 257: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 258: if ($env{'request.state'} eq "construct"
259: || $symb eq ''
260: || $Apache::lonhomework::type eq 'practice'
261: || $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 262: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 263: ['rndseed']);
1.284 albertel 264: $rndseed=$env{'form.rndseed'};
1.159 albertel 265: if (!$rndseed) {
1.162 albertel 266: $rndseed=$Apache::lonhomework::history{'rndseed'};
267: if (!$rndseed) {
268: $rndseed=time;
269: }
1.284 albertel 270: $env{'form.rndseed'}=$rndseed;
1.162 albertel 271: }
1.374 albertel 272: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
273: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 274: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 275: srand(time);
276: $rndseed=int(rand(2100000000));
1.284 albertel 277: $env{'form.rndseed'}=$rndseed;
278: delete($env{'form.resetdata'});
279: delete($env{'form.newrandomization'});
1.159 albertel 280: }
1.187 albertel 281: if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307 albertel 282: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 283: }
1.247 albertel 284: if ($Apache::lonhomework::history{'resource.CODE'}) {
285: $rndseed=&Apache::lonnet::rndseed();
286: }
1.221 albertel 287: if ($safeeval) {
288: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 289: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 290: }
1.159 albertel 291: }
292: return $rndseed;
1.105 albertel 293: }
294:
1.268 albertel 295: sub remember_problem_state {
296: return '
1.284 albertel 297: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
298: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
299: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 300: }
301:
1.105 albertel 302: sub problem_edit_header {
1.268 albertel 303: return '<input type="hidden" name="submitted" value="edit" />'.
304: &Apache::structuretags::remember_problem_state().'
1.210 albertel 305: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 306: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328 albertel 307: <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.407 ! albertel 308: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
! 309: <hr class="LC_edit_problem_divide" />
1.243 matthew 310: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
1.407 ! albertel 311: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
! 312: <div>'.
1.359 albertel 313: &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.407 ! albertel 314: .'</div>'.
1.282 albertel 315: '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 316: }
317:
318: sub problem_edit_footer {
1.210 albertel 319: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 320: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348 albertel 321: &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342 albertel 322: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 323: }
324:
1.235 albertel 325: sub option {
326: my ($value,$name) = @_;
327: my $result ="<option value='".$value."' ";
1.284 albertel 328: if ($env{'form.'.$name} eq $value) {
1.235 albertel 329: $result.=" selected='on' ";
330: }
331: $result.='>';
332: return $result;
333: }
334:
1.105 albertel 335: sub problem_web_to_edit_header {
1.159 albertel 336: my ($rndseed)=@_;
1.406 albertel 337: my $result .= '<div class="LC_edit_problem_header">';
338:
339: $result.='<div class="LC_edit_problem_header_edit_row">';
340: $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373 albertel 341: $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.406 albertel 342: $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />';
343: $result.='</div>';
344:
345: if (!$Apache::lonhomework::parsing_a_task) {
346: $result .=
347: '<div class="LC_edit_problem_header_title">'.
348: &mt('Problem Testing').
349: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
350: '</div>';
351: } else {
352: $result .=
353: '<div class="LC_edit_problem_header_title">'.
354: &mt('Task Testing').
355: '</div>';
356: }
357:
1.315 albertel 358: my $show_all_foils_text =
359: ($Apache::lonhomework::parsing_a_task) ?
360: &mt(' Show All Instances')
361: : &mt(' Show All Foils');
362:
1.406 albertel 363: my $show_all= '<span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
364: if (defined($env{'form.showallfoils'})) { $show_all.='checked="checked"'; }
365: $show_all.= ' />'.$show_all_foils_text.'</label></span>';
366:
367:
1.384 albertel 368:
1.406 albertel 369: $result .= '<div class="LC_edit_problem_header_status_row">';
1.313 albertel 370: if (!$Apache::lonhomework::parsing_a_task) {
371: $result.="
1.406 albertel 372: <div class='LC_edit_problem_header_row1'>
373: <span class=\"LC_nobreak\">
1.405 albertel 374: ".&mt("Problem Status:")."
1.235 albertel 375: <select name='problemstate'>
1.270 albertel 376: <option value=''></option>
1.235 albertel 377: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
378: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
379: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
380: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
381: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
382: </select>
1.406 albertel 383: </span>
384: <span class=\"LC_nobreak\">
1.405 albertel 385: ".&mt("Problem Type:")."
1.235 albertel 386: <select name='problemtype'>
1.270 albertel 387: <option value=''></option>
1.242 albertel 388: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
389: ".&option('problem','problemtype').&mt("Homework problem")."</option>
390: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 391: </select>
1.406 albertel 392: </span>
393: $show_all
394: </div>
395: <div class='LC_edit_problem_header_row2'>
396: <span class=\"LC_nobreak\">
1.405 albertel 397: ".&mt("Feedback Mode:")."
1.235 albertel 398: <select name='problemstatus'>
399: <option value=''></option>
1.242 albertel 400: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.405 albertel 401: ".&option('no', 'problemstatus').&mt("Don't Show Incorect/Correct Feedback")."</option>
402: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 403: </select>
1.406 albertel 404: </span>
405: ";
406:
1.376 albertel 407: } elsif ($Apache::lonhomework::parsing_a_task) {
408: $result.="
1.406 albertel 409: <div class='LC_edit_problem_header_row1'>
410: <span class=\"LC_nobreak\">
1.405 albertel 411: ".&mt("Problem Status:")."
1.376 albertel 412: <select name='problemstate'>
413: <option value=''></option>
414: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
415: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
416: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
417: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
418: </select>
1.406 albertel 419: </span>
420: $show_all
421: ";
422: }
423:
424: $result.='
425: <span class="LC_nobreak">
426: '.&mt('Apply style file: ').'
427: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
428: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
429: </span>
430: </div>
431: <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
432: <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
433: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
434: </div>
435: <hr class="LC_edit_problem_divide" />
436: <div class="LC_edit_problem_header_randomize_row">
437: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
438: <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
439: <input type="text" name="rndseed" size="10" value="'.
440: $rndseed.'"
441: onchange="javascript:document.lonhomework.changerandseed.click()" />';
442:
443: if (!$Apache::lonhomework::parsing_a_task) {
444: my $numtoanalyze=$env{'form.numtoanalyze'};
445: if (!$numtoanalyze) { $numtoanalyze=20; }
446: $result .= &mt('[_1] for [_2] versions of this problem.',
447: '<input type="submit" name="problemmode" value='.&mt('"Calculate answers').'" />',
448: '<input type="text" name="numtoanalyze" value="'.
449: $numtoanalyze.'" size="5" />').
450: &Apache::loncommon::help_open_topic("Analyze_Problem",
451: '',undef,undef,300);
1.313 albertel 452: }
1.406 albertel 453:
454: $result.='
455: </div>
456: <hr class="LC_edit_problem_divide" />
457: </div>';
1.159 albertel 458: return $result;
1.48 albertel 459: }
460:
1.65 albertel 461: sub initialize_storage {
1.357 albertel 462: my ($given_symb) = @_;
1.353 albertel 463: undef(%Apache::lonhomework::results);
464: undef(%Apache::lonhomework::history);
1.357 albertel 465: my ($symb,$courseid,$domain,$name) =
1.367 albertel 466: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 467:
468: # anonymous users (CODEd exams) have no data
469: if ($name eq 'anonymous'
470: && !defined($domain)) {
471: return;
472: }
473:
1.333 albertel 474: if ($env{'request.state'} eq 'construct'
475: || $symb eq ''
476: || $Apache::lonhomework::type eq 'practice') {
477:
478: my $namespace = $symb || $env{'request.uri'};
479: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 480: ($env{'form.resetdata'} eq &mt('New Problem Variation')
481: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 482: $env{'form.newrandomization'} eq &mt('New Randomization')) {
483: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
484: &Apache::lonxml::debug("Attempt reset");
485: }
1.159 albertel 486: %Apache::lonhomework::history=
1.333 albertel 487: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 488: my ($temp)=keys %Apache::lonhomework::history ;
489: &Apache::lonxml::debug("Return message of $temp");
490: } else {
491: %Apache::lonhomework::history=
492: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
493: }
1.353 albertel 494:
1.159 albertel 495: #ignore error conditions
1.67 albertel 496: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 497: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 498: }
499:
500: # -------------------------------------------------------------finalize_storage
501: # Stores away the result has to a student's environment
502: # checks form.grade_ for specific values, other wises stores
503: # to the running users environment
1.285 raeburn 504: # Will increment totals for attempts, students, and corrects
505: # if running user has student role.
1.65 albertel 506: sub finalize_storage {
1.357 albertel 507: my ($given_symb) = @_;
1.159 albertel 508: my $result;
1.289 albertel 509: if (%Apache::lonhomework::results) {
1.323 albertel 510: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
511: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 512: my ($symb,$courseid,$domain,$name) =
1.367 albertel 513: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 514: if ($env{'request.state'} eq 'construct'
515: || $symb eq ''
516: || $Apache::lonhomework::type eq 'practice') {
517: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 518: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 519: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 520: $namespace,'',$domain,$name);
1.159 albertel 521: &Apache::lonxml::debug('Construct Store return message:'.$result);
522: } else {
523: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
524: $symb,$courseid,$domain,$name);
525: &Apache::lonxml::debug('Store return message:'.$result);
1.285 raeburn 526: if ($env{'request.role'} =~/^st/) {
527: &store_aggregates($symb,$courseid);
528: }
1.159 albertel 529: }
1.323 albertel 530: } else {
531: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 532: }
1.159 albertel 533: return $result;
1.65 albertel 534: }
535:
1.285 raeburn 536: # -------------------------------------------------------------store_aggregates
537: # Sends hash of values to be incremented in nohist_resourcetracker.db
538: # for the course. Increments total number of attempts, unique students
539: # and corrects for each part for an instance of a problem, as appropriate.
540: sub store_aggregates {
541: my ($symb,$courseid) = @_;
1.286 albertel 542: my %aggregate;
543: my @parts;
1.288 albertel 544: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
545: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 546: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 547: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 548: push(@parts, $1);
1.285 raeburn 549: }
550: }
1.286 albertel 551: foreach my $part (@parts) {
552: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
553: eq 'APPROX_ANS' ||
554: $Apache::lonhomework::results{'resource.'.$part.'.award'}
555: eq 'EXACT_ANS') {
1.287 albertel 556: $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285 raeburn 557: }
1.286 albertel 558: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287 albertel 559: $aggregate{$symb."\0".$part."\0users"} = 1;
1.292 raeburn 560: } else {
1.293 albertel 561: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1.292 raeburn 562: if ($last_reset) {
1.293 albertel 563: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292 raeburn 564: $aggregate{$symb."\0".$part."\0users"} = 1;
565: }
566: }
1.285 raeburn 567: }
1.287 albertel 568: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 569: }
1.292 raeburn 570: if (keys (%aggregate) > 0) {
1.289 albertel 571: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 572: $cdomain,$cname);
573: }
574: }
1.289 albertel 575:
1.65 albertel 576: sub checkout_msg {
1.211 albertel 577: my %lt=&Apache::lonlocal::texthash(
578: 'resource'=>'The resource needs to be checked out',
579: '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.',
580: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
581: 'checkout'=>'Check out Exam for Viewing',
582: 'checkout?'=>'Check out Exam?');
1.352 albertel 583: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 584: return (<<ENDCHECKOUT);
1.211 albertel 585: <h2>$lt{'resource'}</h2>
586: <p>$lt{'id_expln'}</p>
587: <font color="red">
588: <p>$lt{'warning'}</p>
1.91 albertel 589: </font>
1.352 albertel 590: <form name="checkout" method="POST" action="$uri">
1.91 albertel 591: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 592: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 593: </form>
594: ENDCHECKOUT
595: }
596:
1.252 albertel 597: sub firstaccess_msg {
1.253 albertel 598: my ($time,$symb)=@_;
599: my ($map)=&Apache::lonnet::decode_symb($symb);
600: my $foldertitle=&Apache::lonnet::gettitle($map);
601: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352 albertel 602: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252 albertel 603: return (<<ENDCHECKOUT);
1.253 albertel 604: <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
1.352 albertel 605: <form name="markaccess" method="POST" action="$uri">
1.252 albertel 606: <input type="hidden" name="markaccess" value="yes" />
607: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
608: </form>
609: ENDCHECKOUT
610: }
611:
1.204 albertel 612: sub init_problem_globals {
613: my ($type)=@_;
614: #initialize globals
1.308 foxr 615: # For problems, we start out in part 0 (outside a <part> tag).
616: # and part 0 is used to describe the main body of the <problem>
617: #
1.204 albertel 618: if ($type eq 'problem') {
619: $Apache::inputtags::part='0';
620: @Apache::inputtags::partlist=('0');
1.405 albertel 621: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 622: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 623:
1.266 albertel 624: } elsif ($type eq 'library') {
1.204 albertel 625: $Apache::inputtags::part='';
626: @Apache::inputtags::partlist=();
1.405 albertel 627: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 628: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 629:
1.304 albertel 630: } elsif ($type eq 'Task') {
631: $Apache::inputtags::part='0';
632: @Apache::inputtags::partlist=('0');
1.405 albertel 633: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 634: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 635: }
636: @Apache::inputtags::responselist = ();
637: @Apache::inputtags::importlist = ();
638: @Apache::inputtags::previous=();
639: @Apache::inputtags::previous_version=();
640: $Apache::structuretags::printanswer='No';
641: @Apache::structuretags::whileconds=();
642: @Apache::structuretags::whilebody=();
643: @Apache::structuretags::whileline=();
644: $Apache::lonhomework::scantronmode=0;
645: undef($Apache::lonhomework::name);
1.358 albertel 646: undef($Apache::lonhomework::default_type);
647: undef($Apache::lonhomework::type);
1.204 albertel 648: }
649:
650: sub reset_problem_globals {
651: my ($type)=@_;
652: undef(%Apache::lonhomework::history);
653: undef(%Apache::lonhomework::results);
654: undef($Apache::inputtags::part);
1.208 albertel 655: #don't undef this, lonhomework.pm takes care of this, we use this to
656: #detect if we try to do 2 problems in one file
657: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 658: undef($Apache::lonhomework::name);
1.358 albertel 659: undef($Apache::lonhomework::default_type);
660: undef($Apache::lonhomework::type);
661: undef($Apache::lonhomework::scantronmode);
662: undef($Apache::lonhomework::ignore_response_errors);
1.405 albertel 663: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 664: }
665:
1.241 albertel 666: sub set_problem_state {
1.240 albertel 667: my ($part)=@_;
1.284 albertel 668: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 669: $Apache::lonhomework::history{"resource.$part.solved"}=
670: 'correct_by_student';
671: }
672: }
673:
1.241 albertel 674: sub get_problem_status {
675: my ($part)=@_;
1.267 albertel 676: my $problem_status;
1.284 albertel 677: if ($env{'request.state'} eq 'construct' &&
678: defined($env{'form.problemstatus'})) {
679: $problem_status=$env{'form.problemstatus'};
1.267 albertel 680: } else {
681: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
682: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 683: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 684: }
685: return $problem_status;
686: }
687:
1.9 albertel 688: sub start_problem {
1.326 albertel 689: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 690:
1.311 foxr 691: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 692: if (!$Apache::lonxml::metamode) {
693: &Apache::lonxml::startredirection();
694: }
1.311 foxr 695:
1.308 foxr 696: # Problems don't nest and we don't allow more than one <problem> in
697: # a .problem file.
698: #
1.184 albertel 699: if ( $Apache::inputtags::part ne '' ||
700: $Apache::lonhomework::parsing_a_problem) {
701: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 702: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 703: return '';
704: }
1.184 albertel 705:
706: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 707: &init_problem_globals('problem');
1.166 albertel 708:
1.284 albertel 709: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 710: $Apache::lonhomework::scantronmode=1;
711: }
1.161 albertel 712:
1.159 albertel 713: if ($target ne 'analyze') {
714: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284 albertel 715: if (($env{'request.state'} eq 'construct') &&
716: defined($env{'form.problemtype'})) {
717: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 718: }
1.332 albertel 719: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 720: }
1.164 albertel 721: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 722: my $uri=$env{'request.uri'};
1.159 albertel 723: if ($uri=~/\.(\w+)$/) {
724: $Apache::lonhomework::type=$1;
725: &Apache::lonxml::debug("Using type of $1");
726: } else {
727: $Apache::lonhomework::type='problem';
728: &Apache::lonxml::debug("Using default type, problem, :$uri:");
729: }
1.87 albertel 730: }
1.301 albertel 731: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 732:
1.363 albertel 733: &initialize_storage();
1.389 albertel 734: if ($target ne 'analyze'
735: && $env{'request.state'} eq 'construct') {
736: &set_problem_state('0');
737: }
738:
1.366 albertel 739: if ($target eq 'web') {
740: &Apache::lonxml::debug(" grading history ");
741: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
742: }
1.363 albertel 743:
1.159 albertel 744: #added vars to the scripting enviroment
1.213 albertel 745: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 746: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 747: &Apache::run::run($expression,$safeeval);
1.159 albertel 748: my $status;
749: my $accessmsg;
750:
1.343 albertel 751: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 752: my ($result,$form_tag_start);
1.354 albertel 753: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
754: || $target eq 'edit') {
1.350 albertel 755: ($result,$form_tag_start) =
756: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
757: $name);
758: }
759:
1.284 albertel 760: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 761:
762: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
763: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
764: $target eq 'tex') {
765: #handle exam checkout
766: if ($Apache::lonhomework::type eq 'exam') {
767: my $token=
768: $Apache::lonhomework::history{"resource.0.outtoken"};
1.284 albertel 769: if (($env{'form.doescheckout'}) && (!$token)) {
1.159 albertel 770: $token=&Apache::lonxml::maketoken();
771: $Apache::lonhomework::history{"resource.0.outtoken"}=
772: $token;
773: }
1.343 albertel 774: $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 775: }
1.284 albertel 776: if ($env{'form.markaccess'}) {
1.252 albertel 777: &Apache::lonnet::set_first_access('map');
778: }
1.159 albertel 779: #handle rand seed in construction space
780: my $rndseed=&setup_rndseed($safeeval);
1.367 albertel 781: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 782: if ($env{'request.state'} ne "construct" &&
783: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 784: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
785: $rndseed.'" />'.
786: '<input type="submit" name="resetdata"
1.334 albertel 787: value="'.&mt('New Problem Variation').'" />';
788: if (exists($env{'form.username'})) {
789: $form_tag_start.=
1.164 albertel 790: '<input type="hidden" name="username"
1.284 albertel 791: value="'.$env{'form.username'}.'" />';
1.334 albertel 792: }
1.333 albertel 793: if ($env{'request.role.adv'}) {
1.267 albertel 794: $form_tag_start.=
1.300 albertel 795: ' <label><input type="checkbox" name="showallfoils" ';
1.284 albertel 796: if (defined($env{'form.showallfoils'})) {
1.267 albertel 797: $form_tag_start.='checked="on"';
798: }
1.300 albertel 799: $form_tag_start.= ' />'.&mt(' Show All Foils').
800: '</label>';
1.267 albertel 801: }
802: $form_tag_start.='<hr />';
1.162 albertel 803: }
1.324 albertel 804:
805: ($status,$accessmsg,my $slot_name,my $slot) =
806: &Apache::lonhomework::check_slot_access('0','problem');
1.159 albertel 807: push (@Apache::inputtags::status,$status);
1.324 albertel 808:
1.159 albertel 809: my $expression='$external::datestatus="'.$status.'";';
810: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
811: &Apache::run::run($expression,$safeeval);
812: &Apache::lonxml::debug("Got $status");
1.324 albertel 813:
1.159 albertel 814: if (( $status eq 'CLOSED' ) ||
815: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 816: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 817: ( $status eq 'BANNED') ||
1.216 albertel 818: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 819: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 820: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 821: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
822: $style);
1.159 albertel 823: if ( $target eq "web" ) {
1.343 albertel 824: my $msg;
1.159 albertel 825: if ($status eq 'UNAVAILABLE') {
1.245 albertel 826: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 827: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 828: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 829: }
1.216 albertel 830: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 831: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 832: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 833: $msg.=&checkout_msg();
1.252 albertel 834: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 835: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 836: } elsif ($status eq 'NOT_IN_A_SLOT') {
837: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159 albertel 838: }
839: $result.=$msg.'<br />';
840: } elsif ($target eq 'tex') {
1.332 albertel 841: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
842: : '\begin{minipage}{\textwidth}';
843: $result.='\begin{document}\noindent \vskip 1 mm '.
844: $startminipage.'\vskip 0 mm';
1.159 albertel 845: if ($status eq 'UNAVAILABLE') {
1.211 albertel 846: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 847: } else {
1.211 albertel 848: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 849: }
850: }
1.324 albertel 851: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 852: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
853: $style);
1.324 albertel 854: if ($target eq 'web') {
1.375 albertel 855: $result .=
856: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 857: } elsif ($target eq 'grade') {
858: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
859: 'problem');
860: }
1.159 albertel 861: } elsif ($target eq 'web') {
1.360 albertel 862: if ($status eq 'CAN_ANSWER'
863: && $slot_name ne ''
864: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
865: # unproctored slot access, self checkin
866: &Apache::bridgetask::check_in('problem',undef,undef,
867: $slot_name);
868: }
1.368 albertel 869: $result.="\n $form_tag_start \t".
1.227 albertel 870: '<input type="hidden" name="submitted" value="yes" />';
871: # create a page header and exit
1.284 albertel 872: if ($env{'request.state'} eq "construct") {
873: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227 albertel 874: }
875: # if we are viewing someone else preserve that info
1.284 albertel 876: if (defined $env{'form.grade_symb'}) {
1.227 albertel 877: foreach my $field ('symb','courseid','domain','username') {
878: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 879: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 880: }
881: }
882: } elsif ($target eq 'tex') {
1.319 foxr 883: $result .= 'INSERTTEXFRONTMATTERHERE';
884:
1.99 sakharuk 885: }
1.159 albertel 886: } elsif ($target eq 'edit') {
1.343 albertel 887: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 888: $Apache::lonxml::warnings_error_header=
889: &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 890: my $temp=&Apache::edit::insertlist($target,$token);
891: $result.=$temp;
892: } elsif ($target eq 'modified') {
893: $result=$token->[4];
894: } else {
895: # page_start returned a starting result, delete it if we don't need it
896: $result = '';
1.99 sakharuk 897: }
1.159 albertel 898: return $result;
1.9 albertel 899: }
900:
901: sub end_problem {
1.159 albertel 902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 903: my $result;
1.310 foxr 904:
1.321 albertel 905: if (!$Apache::lonxml::metamode) {
906: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 907: $Apache::lonxml::post_evaluate=0;
1.321 albertel 908: }
1.319 foxr 909:
910: if ($target eq 'tex') {
1.321 albertel 911: # Figure out the front matter and replace the
912: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
913: # this in end_problem because whether or not we display due
914: # dates depends on whether due dates have already been
915: # displayed in the problem parts.
916:
1.319 foxr 917: my $frontmatter = '';
918: my $startminipage = '';
919: if (not $env{'form.problem_split'}=~/yes/) {
920: $startminipage = '\begin{minipage}{\textwidth}';
921: }
922: my $id = $Apache::inputtags::part;
923: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
924: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
925: my @packages = split /,/,$packages;
926: my $allow_print_points = 0;
927: foreach my $partial_key (@packages) {
928: if ($partial_key=~m/^part_0$/) {
929: $allow_print_points=1;
930: }
931: }
932: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
933: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
934: if (lc($env{'course.'.$env{'request.course.id'}.
935: '.disableexampointprint'}) eq 'yes') {
936: $allow_print_points=0;
937: }
938: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
939: my $begin_doc='\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
940: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
941: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
942:
943: # Figure out what the due date is and if we need to print
944: # it in the problem header. We have been logging the
945: # last due date written to file.
946:
947: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
948: my $duedate = POSIX::strftime("%c",localtime($duetime));
949: my $temp_file;
950: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
951:
952: # Figure out what the last printed due date is or set it
953: # to the epoch if no duedates have been printed.
954:
955: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
956: if (-e $filename) {
957: $temp_file = Apache::File->new($filename);
958: my @due_file = <$temp_file>;
959: $due_file_content = $due_file[$#due_file];
960: chomp $due_file_content;
961: }
962:
963: # We display the due date iff it is not the same as the last
964: # duedate in problem header ($due_file_content), and
965: # none of our parts displayed a duedate.
966: #
967: my $parts_with_displayduedate;
968: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
969: $parts_with_displayduedate =
970: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
971: } else {
972: $parts_with_displayduedate = 0;
973: }
974: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
975: $temp_file = Apache::File->new('>'.$filename);
976: print $temp_file "$duetime\n";
977: if (not $env{'request.symb'} =~ m/\.page_/) {
978: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
979: $frontmatter .= $begin_doc.
980: '\textit{Due date: '.$duedate.'} '.$toc_line;
981: } else {
982: $frontmatter.= $begin_doc.$toc_line;
983: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
984: }
985: } else {
1.381 albertel 986: $frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319 foxr 987: }
988: } else {
989: if (not $env{'request.symb'} =~ m/\.page_/) {
990: $frontmatter .= $begin_doc.$toc_line;
991: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
992: } else {
1.381 albertel 993: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 994: }
995: }
996: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
997: }
998:
1.159 albertel 999: my $status=$Apache::inputtags::status['-1'];
1000: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
1001: $target eq 'tex') {
1.249 albertel 1002: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 1003: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 1004: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
1005: &Apache::inputtags::grade;
1.324 albertel 1006: } elsif ($status eq 'NEEDS_CHECKIN') {
1007: # no need to grade, and don't want to hide data
1.249 albertel 1008: } else {
1009: # move any submission data to .hidden
1010: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1011: }
1.159 albertel 1012: } elsif ( ($target eq 'web' || $target eq 'tex') &&
1013: $Apache::inputtags::part eq '0' &&
1.252 albertel 1014: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 1015: # if part is zero, no <part>s existed, so we need show the current
1016: # grading status
1017: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
1018: $result.= $gradestatus;
1019: }
1020: if (
1.284 albertel 1021: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 1022: ($target eq 'answer') || ($target eq 'tex')
1023: ) {
1.227 albertel 1024: if ($target ne 'tex' &&
1.284 albertel 1025: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 1026: $result.="</form>";
1.348 albertel 1027: $result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159 albertel 1028: }
1029: if ($target eq 'web') {
1.346 albertel 1030: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1031: } elsif ($target eq 'tex') {
1.178 sakharuk 1032: my $endminipage = '';
1.284 albertel 1033: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 1034: $endminipage = '\end{minipage}';
1035: }
1.284 albertel 1036: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 1037: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 1038: } else {
1.262 sakharuk 1039: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 1040: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 1041: $result .= $endminipage.'\end{document} ';
1042: } else {
1.382 albertel 1043: $result .= $endminipage;
1.262 sakharuk 1044: }
1.159 albertel 1045: }
1046: }
1047: }
1048: if ($target eq 'grade') {
1049: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1050: &finalize_storage();
1051: }
1.284 albertel 1052: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
1053: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 1054: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 1055: # normally we get it from above, but in CSTR
1.172 albertel 1056: # we always show answer mode too.
1.159 albertel 1057: }
1058: } elsif ($target eq 'meta') {
1059: if ($Apache::inputtags::part eq '0') {
1.179 albertel 1060: @Apache::inputtags::response=();
1.159 albertel 1061: $result=&Apache::response::mandatory_part_meta;
1062: }
1.215 albertel 1063: $result.=&Apache::response::meta_part_order();
1.258 albertel 1064: $result.=&Apache::response::meta_response_order();
1.159 albertel 1065: } elsif ($target eq 'edit') {
1066: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1067: $result .= &problem_edit_footer();
1.320 albertel 1068: } elsif ($target eq 'modified') {
1069: $result .= $token->[2];
1.159 albertel 1070: }
1.155 albertel 1071:
1.284 albertel 1072: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1073: &Apache::inputtags::check_for_duplicate_ids();
1074: }
1.204 albertel 1075:
1076: &reset_problem_globals('problem');
1.159 albertel 1077:
1078: return $result;
1.48 albertel 1079: }
1080:
1.108 albertel 1081:
1.48 albertel 1082: sub start_library {
1.159 albertel 1083: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1084: my ($result,$form_tag_start);
1.371 albertel 1085: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1086: &init_problem_globals('library');
1087: $Apache::lonhomework::type='problem';
1088: }
1.159 albertel 1089: if ($target eq 'edit') {
1.343 albertel 1090: ($result,$form_tag_start)=
1091: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1092: 'Edit');
1093: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1094: my $temp=&Apache::edit::insertlist($target,$token);
1095: $result.=$temp;
1096: } elsif ($target eq 'modified') {
1097: $result=$token->[4];
1.340 albertel 1098: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1099: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1100: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1101: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1102: ($result,$form_tag_start)=
1103: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1104: $name);
1.159 albertel 1105: my $rndseed=&setup_rndseed($safeeval);
1.343 albertel 1106: $result.=" \n $form_tag_start".
1.159 albertel 1107: '<input type="hidden" name="submitted" value="yes" />';
1108: $result.=&problem_web_to_edit_header($rndseed);
1109: }
1110: return $result;
1.48 albertel 1111: }
1112:
1113: sub end_library {
1.159 albertel 1114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1115: my $result='';
1116: if ($target eq 'edit') {
1117: $result=&problem_edit_footer();
1.371 albertel 1118: } elsif ($target eq 'web'
1119: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1120: && $env{'request.state'} eq "construct") {
1.349 albertel 1121: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1122: }
1.371 albertel 1123: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1124: &reset_problem_globals('library');
1125: }
1.159 albertel 1126: return $result;
1.197 www 1127: }
1128:
1129: sub start_definetag {
1.326 albertel 1130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1131:
1132: my $result;
1133:
1134: my $name = $token->[2]->{'name'};
1.326 albertel 1135: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1136: if ($target eq 'web') {
1137: if ($name=~/^\//) {
1138: $result=
1139: '<br /><table class="LC_sty_end"><tr><th>'.
1140: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1141: } else {
1142: $result=
1143: '<br /><table class="LC_sty_begin"><tr><th>'.
1144: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1145: }
1146: $skip = &HTML::Entities::encode($skip, '<>&"');
1147: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1148: }
1149: return $result;
1150: }
1151:
1152: sub end_definetag {
1153: return '';
1.1 albertel 1154: }
1155:
1156: sub start_block {
1.201 albertel 1157: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1158:
1159: my $result;
1.1 albertel 1160:
1.339 albertel 1161: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1162: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1163: my $code = $token->[2]->{'condition'};
1.385 albertel 1164: if (defined($code) && $code ne '') {
1.137 albertel 1165: if (!$Apache::lonxml::default_homework_loaded) {
1166: &Apache::lonxml::default_homework_load($safeeval);
1167: }
1.131 albertel 1168: $result = &Apache::run::run($code,$safeeval);
1169: &Apache::lonxml::debug("block :$code: returned :$result:");
1170: } else {
1171: $result='1';
1172: }
1173: if ( ! $result ) {
1.201 albertel 1174: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1175: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1176: }
1177: $result='';
1178: } elsif ($target eq 'edit') {
1179: $result .=&Apache::edit::tag_start($target,$token);
1180: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1181: $token,40);
1182: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1183: } elsif ($target eq 'modified') {
1184: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1185: $safeeval,'condition');
1186: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1187: }
1.131 albertel 1188: return $result;
1.1 albertel 1189: }
1190:
1191: sub end_block {
1.167 www 1192: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1193: my $result;
1194: if ($target eq "edit") {
1195: $result.= &Apache::edit::tag_end($target,$token,'');
1196: }
1197: return $result;
1198: }
1199:
1200: sub start_languageblock {
1.201 albertel 1201: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1202:
1203: my $result;
1204:
1.339 albertel 1205: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1206: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1207: my $include = $token->[2]->{'include'};
1208: my $exclude = $token->[2]->{'exclude'};
1.398 www 1209: my @preferred_languages=&Apache::loncommon::preferred_languages();
1.394 www 1210: # This should not even happen, since we should at least have the server language
1.398 www 1211: if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
1212: # Now loop over all languages in order of preference
1213: foreach my $preferred_language (@preferred_languages) {
1.394 www 1214: # If the languageblock has no arguments, show the contents
1.399 www 1215: $result=1;
1216: my $found=0;
1.394 www 1217: # Do we have an include argument?
1.398 www 1218: if ($include) {
1.394 www 1219: # If include is specified, by default, don't render the block
1.399 www 1220: $result=0;
1.398 www 1221: foreach my $included_language (split(/\,/,$include)) {
1.394 www 1222: # ... but if my preferred language is included, render it
1.398 www 1223: if ($included_language eq $preferred_language) {
1.399 www 1224: $result=1;
1225: $found=1;
1.398 www 1226: }
1227: }
1228: }
1.394 www 1229: # Do we have an exclude argument?
1.398 www 1230: if ($exclude) {
1.399 www 1231: $result=1;
1.398 www 1232: foreach my $excluded_language (split(/\,/,$exclude)) {
1233: if ($excluded_language eq $preferred_language) {
1.399 www 1234: $result=0;
1235: $found=1;
1.398 www 1236: }
1237: }
1238: }
1.399 www 1239: if ($found) { last; }
1.398 www 1240: }
1.201 albertel 1241: if ( ! $result ) {
1242: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1243: $style);
1244: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1245: }
1246: $result='';
1.167 www 1247: } elsif ($target eq 'edit') {
1248: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1249: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1250: $token,40);
1.211 albertel 1251: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1252: $token,40);
1253: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1254: } elsif ($target eq 'modified') {
1255: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1256: $safeeval,'include',
1257: 'exclude');
1.167 www 1258: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1259: }
1260: return $result;
1261: }
1262:
1263: sub end_languageblock {
1.170 www 1264: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1265: my $result;
1.201 albertel 1266: if ($target eq "edit") {
1.170 www 1267: $result.= &Apache::edit::tag_end($target,$token,'');
1268: }
1269: return $result;
1270: }
1271:
1.397 albertel 1272: {
1273: my %available_texts;
1274: sub start_translated {
1275: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1276: &Apache::lonxml::register('Apache::structuretags',('lang'));
1277: undef(%available_texts);
1278: }
1279:
1280: sub end_translated {
1281: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1282: my $result;
1283: #show the translation on viewable targets
1284: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1285: # or non-viewable targets, if it's embedded in something that
1286: # wants the output
1287: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1288: && &Apache::lonxml::in_redirection() ) ) {
1289: my @possibilities = keys(%available_texts);
1290: my $which =
1291: &Apache::loncommon::languages(\@possibilities) || 'default';
1292: $result = $available_texts{$which};
1293: }
1294: undef(%available_texts);
1295: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1296: return $result;
1297: }
1298:
1299:
1300: sub start_lang {
1301: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1302: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1303: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1304: &Apache::lonxml::startredirection();
1305: }
1306: return '';
1307: }
1308:
1309: sub end_lang {
1310: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1311: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1312: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1313: my $result = &Apache::lonxml::endredirection();
1314: my $which = &Apache::lonxml::get_param('which',$parstack,
1315: $safeeval);
1316: $available_texts{$which} = $result;
1317: }
1318: return '';
1319: }
1320: }
1321:
1.170 www 1322: sub start_instructorcomment {
1.201 albertel 1323: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1324:
1325: my $result;
1326:
1.339 albertel 1327: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1328: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284 albertel 1329: $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
1330: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1331: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1332: $parser,$style);
1.170 www 1333: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1334: }
1335: $result='';
1336: } elsif ($target eq 'edit') {
1337: $result .=&Apache::edit::tag_start($target,$token);
1338: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1339: }
1340: return $result;
1341: }
1342:
1343: sub end_instructorcomment {
1.159 albertel 1344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1345: my $result;
1346: if ($target eq "edit") {
1347: $result.= &Apache::edit::tag_end($target,$token,'');
1348: }
1349: return $result;
1.4 tsai 1350: }
1351:
1352: sub start_while {
1.326 albertel 1353: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1354:
1.160 albertel 1355: my $result;
1.339 albertel 1356: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1357: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1358: my $code = $token->[2]->{'condition'};
1.4 tsai 1359:
1.160 albertel 1360: push( @Apache::structuretags::whileconds, $code);
1361: if (!$Apache::lonxml::default_homework_loaded) {
1362: &Apache::lonxml::default_homework_load($safeeval);
1363: }
1364: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1365: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1366: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1367: push( @Apache::structuretags::whileline, $token->[5]);
1368: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1369: if ( $result ) {
1370: &Apache::lonxml::newparser($parser,\$bodytext);
1371: }
1372: } elsif ($target eq 'edit') {
1373: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1374: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1375: $token,40);
1376: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1377: } elsif ($target eq 'modified') {
1378: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1379: $safeeval,'condition');
1380: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1381: }
1.160 albertel 1382: return $result;
1.4 tsai 1383: }
1384:
1385: sub end_while {
1.159 albertel 1386: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1387: my $result;
1388:
1.339 albertel 1389: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1390: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1391: my $code = pop(@Apache::structuretags::whileconds);
1392: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1393: my $line = pop(@Apache::structuretags::whileline);
1394: my $return = &Apache::run::run($code,$safeeval);
1395: my $starttime=time;
1396: my $error=0;
1397: while ($return) {
1398: if (time-$starttime >
1399: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1400: $return = 0; $error=1; next;
1.161 albertel 1401: }
1402: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1403: if ($target eq 'grade' || $target eq 'answer' ||
1404: $target eq 'analyze') {
1405: # grade/answer/analyze should produce no output but if we
1406: # are redirecting, the redirecter should know what to do
1407: # with the output
1408: if (!$Apache::lonxml::redirection) { undef($result); }
1409: }
1.161 albertel 1410: $return = &Apache::run::run($code,$safeeval);
1411: }
1412: if ($error) {
1.270 albertel 1413: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running <while> on line').' '.$line.'</pre>');
1.160 albertel 1414: }
1415: } elsif ($target eq "edit") {
1416: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1417: }
1.160 albertel 1418: return $result;
1.1 albertel 1419: }
1.6 tsai 1420:
1.160 albertel 1421: # <randomlist show="1">
1.6 tsai 1422: # <tag1>..</tag1>
1423: # <tag2>..</tag2>
1424: # <tag3>..</tag3>
1.160 albertel 1425: # ...
1.6 tsai 1426: # </randomlist>
1427: sub start_randomlist {
1.326 albertel 1428: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1429: my $result;
1.339 albertel 1430: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1431: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1432: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1433: my $b_parser= HTML::LCParser->new(\$body);
1434: $b_parser->xml_mode(1);
1435: $b_parser->marked_sections(1);
1.159 albertel 1436: my $b_tok;
1437: my @randomlist;
1438: my $list_item;
1439: while($b_tok = $b_parser->get_token() ) {
1440: if($b_tok->[0] eq 'S') { # start tag
1441: # get content of the tag until matching end tag
1442: # get all text upto the matching tag
1443: # and push the content into @randomlist
1444: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1445: $b_parser);
1446: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1447: push(@randomlist,$list_item);
1448: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1449: # $list_item</b>";
1450: }
1451: if($b_tok->[0] eq 'T') { # text
1452: # what to do with text in between tags?
1453: # print "<b>TEXT $b_tok->[1]</b><br />";
1454: }
1455: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1456: # print "<b>END-TAG $b_tok->[1]</b><br />";
1457: # }
1458: }
1.303 albertel 1459: if (@randomlist) {
1460: my @idx_arr = (0 .. $#randomlist);
1461: &Apache::structuretags::shuffle(\@idx_arr);
1462: my $bodytext = '';
1463: my $show=$#randomlist;
1464: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1465: $showarg--;
1466: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1467: for(0 .. $show) {
1468: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1469: }
1470: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1471: }
1472: } elsif ($target eq 'edit' ) {
1473: $result .=&Apache::edit::tag_start($target,$token);
1474: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1475: $token,5);
1476: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1477: } elsif ($target eq 'modified' ) {
1478: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1479: $safeeval,'show');
1480: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1481: }
1482: return $result;
1.7 tsai 1483: }
1484:
1485: sub shuffle {
1486: my $a=shift;
1487: my $i;
1.303 albertel 1488: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1489: &Apache::response::pushrandomnumber();
1.159 albertel 1490: for($i=@$a;--$i;) {
1491: my $j=int(&Math::Random::random_uniform() * ($i+1));
1492: next if $i == $j;
1493: @$a[$i,$j] = @$a[$j,$i];
1494: }
1.251 albertel 1495: &Apache::response::poprandomnumber();
1.7 tsai 1496: }
1.6 tsai 1497: }
1498:
1499: sub end_randomlist {
1.159 albertel 1500: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1501: my $result;
1502: if ($target eq 'edit' ) {
1503: $result=&Apache::edit::tag_end($target,$token,
1504: 'End Randomly Parsed Block');
1505: }
1506: return $result;
1.6 tsai 1507: }
1508:
1.283 albertel 1509: sub ordered_show_check {
1510: my $last_part=$Apache::inputtags::partlist[-2];
1511: my $in_order=
1512: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1513: my $in_order_show=1;
1514: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1515: $in_order_show=&Apache::response::check_status($last_part);
1516: }
1517: return $in_order_show;
1518: }
1519:
1.11 albertel 1520: sub start_part {
1.326 albertel 1521: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 1522: if (!$Apache::lonxml::metamode) {
1523: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1524: # duedates.
1525: }
1.159 albertel 1526: my $result='';
1.386 albertel 1527: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 1528: $Apache::inputtags::part=$id;
1.177 albertel 1529: push(@Apache::inputtags::partlist,$id);
1530: @Apache::inputtags::response=();
1.159 albertel 1531: @Apache::inputtags::previous=();
1532: @Apache::inputtags::previous_version=();
1.405 albertel 1533: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 1534: &Apache::response::reset_params();
1535:
1.159 albertel 1536: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1537: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1538: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1539: my $in_order_show=&ordered_show_check();
1.214 albertel 1540: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1541: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1542: &Apache::run::run($expression,$safeeval);
1.159 albertel 1543:
1544: if ($target eq 'meta') {
1.224 www 1545: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1546: return &Apache::response::mandatory_part_meta.
1547: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1548: } elsif ($target eq 'web' || $target eq 'grade' ||
1549: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1550: if ($hidden || !$in_order_show) {
1.326 albertel 1551: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 1552: } else {
1553: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1554: push (@Apache::inputtags::status,$status);
1555: my $expression='$external::datestatus="'.$status.'";';
1556: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1557: &Apache::run::run($expression,$safeeval);
1.284 albertel 1558: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1559: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1560: }
1.216 albertel 1561: if (( $status eq 'CLOSED' ) ||
1562: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1563: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1564: ( $status eq 'BANNED') ||
1565: ( $status eq 'UNAVAILABLE') ||
1566: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1567: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
1568: $style);
1.159 albertel 1569: if ( $target eq "web" ) {
1.211 albertel 1570: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1571: } elsif ( $target eq 'tex' ) {
1.284 albertel 1572: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1573: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1574: } else {
1.211 albertel 1575: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1576: }
1.159 albertel 1577: }
1578: } else {
1579: if ($target eq 'tex') {
1.284 albertel 1580: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1581: if ($$tagstack[-2] eq 'td') {
1.388 foxr 1582: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 1583: } else {
1584: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1585: }
1.195 sakharuk 1586: }
1.159 albertel 1587: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1588: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1589: my @allkeys = split /,/,$allkeys;
1590: my $allow_print_points = 0;
1591: foreach my $partial_key (@allkeys) {
1.230 albertel 1592: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1593: if ($1 ne '0') {$allow_print_points=1;}
1594: }
1595: }
1.275 albertel 1596: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1597: if (defined($maxtries) && $maxtries < 0) {
1598: $allow_print_points=0;
1599: }
1.302 albertel 1600: if (lc($env{'course.'.$env{'request.course.id'}.
1601: '.disableexampointprint'}) eq 'yes') {
1602: $allow_print_points=0;
1603: }
1.222 sakharuk 1604: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1605: } elsif ($target eq 'web') {
1.356 www 1606: $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159 albertel 1607: }
1608: }
1609: }
1610: } elsif ($target eq 'edit') {
1611: $result.=&Apache::edit::tag_start($target,$token);
1612: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1613: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1614: ' '.
1615: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1616: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1617: } elsif ($target eq 'modified') {
1618: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1619: $safeeval,'id','display');
1.159 albertel 1620: if ($constructtag) {
1.225 albertel 1621: #limiting ids to only letters numbers, and space
1.224 www 1622: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1623: $result = &Apache::edit::rebuild_tag($token);
1624: }
1625: }
1626: return $result;
1.11 albertel 1627: }
1628:
1629: sub end_part {
1.159 albertel 1630: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1631: &Apache::lonxml::debug("in end_part $target ");
1632: my $status=$Apache::inputtags::status['-1'];
1633: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 1634: my $in_order_show=&ordered_show_check();
1.321 albertel 1635: my $result;
1636: if (!$Apache::lonxml::metamode) {
1637: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 1638: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1639: }
1.312 albertel 1640: if ($target eq 'grade') {
1.249 albertel 1641: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 1642: !$hidden && $in_order_show) {
1.311 foxr 1643: $result.=&Apache::inputtags::grade;
1.249 albertel 1644: } else {
1645: # move any submission data to .hidden
1646: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1647: }
1.283 albertel 1648: } elsif (($target eq 'web' || $target eq 'tex') &&
1649: !$hidden && $in_order_show) {
1.159 albertel 1650: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1651: $target);
1.212 albertel 1652: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1653: $gradestatus='';
1654: }
1.311 foxr 1655: $result.=$gradestatus;
1.265 sakharuk 1656: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1657: } elsif ($target eq 'edit') {
1.311 foxr 1658: $result.=&Apache::edit::end_table();
1.322 albertel 1659: } elsif ($target eq 'modified') {
1660: $result .= $token->[2];
1.159 albertel 1661: }
1662: pop @Apache::inputtags::status;
1663: $Apache::inputtags::part='';
1.295 albertel 1664: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 1665: return $result;
1.11 albertel 1666: }
1.1 albertel 1667:
1.25 albertel 1668: sub start_preduedate {
1.326 albertel 1669: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 1670: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1671: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 1672: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 1673: if (!$Apache::lonhomework::scantronmode &&
1674: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1675: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1676: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 1677: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 1678: }
1.24 albertel 1679: }
1.159 albertel 1680: return '';
1.24 albertel 1681: }
1682:
1.25 albertel 1683: sub end_preduedate {
1.159 albertel 1684: return '';
1.24 albertel 1685: }
1686:
1.369 foxr 1687: # In all the modes where <postanswerdate> text is
1688: # displayable, all we do is eat up the text between the start/stop
1689: # tags if the conditions are not right to display it.
1.25 albertel 1690: sub start_postanswerdate {
1.326 albertel 1691: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 1692: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
1693: &Apache::lonnet::allowed('pav',
1694: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 1695: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 1696: $target eq 'tex' ) {
1.300 albertel 1697: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 1698: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
1699: (($target eq 'tex') && !$pav)) {
1.326 albertel 1700: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 1701: }
1702: }
1703: return '';
1.24 albertel 1704: }
1705:
1.25 albertel 1706: sub end_postanswerdate {
1.159 albertel 1707: return '';
1.24 albertel 1708: }
1709:
1.25 albertel 1710: sub start_notsolved {
1.326 albertel 1711: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1712: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 1713: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 1714: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1715: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1716: if ($gradestatus =~ /^correct/ &&
1717: &Apache::response::show_answer()) {
1.159 albertel 1718: &Apache::lonxml::debug("skipping");
1.326 albertel 1719: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 1720: }
1.24 albertel 1721: }
1.159 albertel 1722: return '';
1.24 albertel 1723: }
1724:
1.25 albertel 1725: sub end_notsolved {
1.159 albertel 1726: return '';
1.24 albertel 1727: }
1728:
1729: sub start_solved {
1.326 albertel 1730: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1731: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1732: $target eq 'tex') {
1733: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1734: if ($gradestatus !~ /^correct/ ||
1735: !&Apache::response::show_answer()) {
1.326 albertel 1736: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 1737: }
1.24 albertel 1738: }
1.159 albertel 1739: return '';
1.24 albertel 1740: }
1741:
1742: sub end_solved {
1.248 albertel 1743: return '';
1744: }
1745:
1746: sub start_problemtype {
1.326 albertel 1747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 1748: my $result;
1.339 albertel 1749: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1750: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 1751: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1752: if (!defined($mode)) { $mode='show'; }
1753: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1754: my $found=0;
1755: foreach my $type (split(',',$for)) {
1756: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1757: }
1758: if ($mode eq 'show' && !$found) {
1.326 albertel 1759: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1760: }
1761: if ($mode eq 'hide' && $found) {
1.326 albertel 1762: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1763: }
1764: } elsif ($target eq 'edit') {
1765: $result .=&Apache::edit::tag_start($target,$token);
1766: $result.=&Apache::edit::select_arg('Mode:','mode',
1767: [['show','Show'],
1768: ['hide','Hide']]
1769: ,$token);
1770: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1771: [ ['exam','Exam/Quiz Problem'],
1772: ['survey','Survey'],
1773: ['problem','Homework Problem'] ]
1774: ,$token);
1775: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1776: } elsif ($target eq 'modified') {
1777: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1778: $safeeval,'mode','for');
1779: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1780: }
1781: return $result;
1782: }
1783:
1784: sub end_problemtype {
1.159 albertel 1785: return '';
1.24 albertel 1786: }
1.34 albertel 1787:
1788: sub start_startouttext {
1.159 albertel 1789: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1790: my @result=(''.'');
1791: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 1792:
1793: my $nesting =
1794: &Apache::lonxml::set_state('outtext',
1795: &Apache::lonxml::get_state('outtext')+1);
1796: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
1797: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
1798: }
1.159 albertel 1799: return (@result);
1.34 albertel 1800: }
1.159 albertel 1801:
1.34 albertel 1802: sub end_startouttext {
1.326 albertel 1803: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1804: my $result='';
1805: my $text='';
1806:
1807: if ($target eq 'edit') {
1.326 albertel 1808: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211 albertel 1809: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1810: <td>".&mt('Delete:').
1.159 albertel 1811: &Apache::edit::deletelist($target,$token)
1812: ."</td>
1.42 albertel 1813: <td>".
1.159 albertel 1814: &Apache::edit::insertlist($target,$token).
1.362 albertel 1815: '</td><td align="right" valign="top">' .
1816: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 1817: &Apache::edit::end_row().
1.362 albertel 1818: &Apache::edit::start_spanning_row()."\n".
1.255 www 1819: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1820: }
1821: if ($target eq 'modified') {
1.219 albertel 1822: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1823: }
1824: if ($target eq 'tex') {
1825: $result .= '\noindent ';
1826: }
1827: return $result;
1.34 albertel 1828: }
1.159 albertel 1829:
1.34 albertel 1830: sub start_endouttext {
1.159 albertel 1831: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1832: my $result='';
1833: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1834: if ($target eq "modified") {
1835: $result='<endouttext />'.
1.377 albertel 1836: &Apache::edit::handle_insertafter('startouttext');
1837: }
1.404 albertel 1838:
1839: my $nesting =
1840: &Apache::lonxml::set_state('outtext',
1841: &Apache::lonxml::get_state('outtext')-1);
1842: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
1843: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
1844: &Apache::lonxml::set_state('outtext', 0);
1845: }
1.159 albertel 1846: return $result;
1.34 albertel 1847: }
1.159 albertel 1848:
1.34 albertel 1849: sub end_endouttext {
1.159 albertel 1850: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1851: my @result=('','');
1852: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1853: return (@result);
1.34 albertel 1854: }
1.159 albertel 1855:
1.45 albertel 1856: sub delete_startouttext {
1.326 albertel 1857: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1858: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 1859: my $text=$$parser['-1']->get_text("/endouttext");
1860: my $ntoken=$$parser['-1']->get_token();
1861: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1862: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1863: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1864: # they did the last time round
1865: &Apache::lonxml::increasedepth($ntoken);
1866: &Apache::lonxml::decreasedepth($ntoken);
1867: return 1;
1.193 www 1868: }
1869:
1870: sub start_simpleeditbutton {
1871: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1872: my $result='';
1.284 albertel 1873: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 1874: ($target eq 'web') &&
1.330 albertel 1875: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 1876: my $url=$env{'request.noversionuri'};
1.193 www 1877: $url=~s/\?.*$//;
1.367 albertel 1878: my ($symb) = &Apache::lonnet::whichuser();
1.194 www 1879: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356 www 1880: '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1.196 www 1881: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1882: }
1883: return $result;
1884: }
1885:
1886: sub end_simpleeditbutton {
1887: return '';
1.45 albertel 1888: }
1.34 albertel 1889:
1.1 albertel 1890: 1;
1891: __END__
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