Annotation of loncom/homework/structuretags.pm, revision 1.489
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.489 ! www 4: # $Id: structuretags.pm,v 1.488 2011/06/06 17:43:51 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: $rndseed=~s/[^\w\d\:\-]//g;
1.489 ! www 416: if (defined($rndseed)) {
! 417: my ($c1,$c2)=split(/\:/,$rndseed);
! 418: unless ($c2) { $c2=0; }
! 419: unless (($c1==int($c1)) && ($c2==int($c2))) {
! 420: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
! 421: }
1.187 albertel 422: }
1.247 albertel 423: if ($Apache::lonhomework::history{'resource.CODE'}) {
424: $rndseed=&Apache::lonnet::rndseed();
425: }
1.479 raeburn 426: $set_safespace = 1;
427: } elsif ($questiontype eq 'randomizetry') {
428: if ($target eq 'analyze') {
429: if (defined($env{'form.grade_rndseed'})) {
430: $rndseed = $env{'form.grade_rndseed'};
431: }
432: }
433: unless (($target eq 'analyze') && (defined($rndseed))) {
434: $rndseed=&Apache::lonnet::rndseed();
435: my $curr_try = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.tries"};
436: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
437: $curr_try ++;
438: }
439: if ($rndseed =~/^(\d+)[,:](\d+)$/) {
440: $rndseed = $1;
441: }
442: if ($curr_try) {
443: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
444: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
445: my $inc = int(($curr_try-1)/$reqtries);
446: $rndseed += $inc;
447: } else {
448: $rndseed += $curr_try;
449: }
450: }
451: }
452: $set_safespace = 1;
453: }
454: if ($set_safespace) {
455: if ($safeeval) {
456: &Apache::lonxml::debug("Setting rndseed to $rndseed");
457: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
458: }
459: }
460: unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
461: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159 albertel 462: }
463: return $rndseed;
1.105 albertel 464: }
465:
1.268 albertel 466: sub remember_problem_state {
467: return '
1.284 albertel 468: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
469: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
470: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 471: }
472:
1.487 www 473: sub problem_edit_action_button {
474: my ($name,$action,$accesskey,$text,$flag)=@_;
475: my $actionscript="setmode(this.form,'$action')";
476: return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
477: ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
478: }
479:
1.423 www 480: sub problem_edit_buttons {
1.487 www 481: my ($mode)=@_;
482: # Buttons that do not save
483: my $result='<div class="LC_edit_problem_discards">'.
484: &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
485: if ($mode eq 'editxml') {
486: $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
487: $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
488: $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
489: } else {
490: $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
491: $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
492: }
493: $result.="\n</div>";
494: # Buttons that save
495: $result.='<div class="LC_edit_problem_saves">';
496: if ($mode eq 'editxml') {
497: $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
498: $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
499: } else {
500: $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
501: $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
502: }
503: $result.="\n</div>\n";
504: return $result;
1.423 www 505: }
506:
507: sub problem_edit_header {
1.487 www 508: return '<input type="hidden" name="submitted" value="edit" />'.
509: &remember_problem_state('edit').'
1.423 www 510: <div class="LC_edit_problem_header">
511: <div class="LC_edit_problem_header_title">
512: '.&mt('Problem Editing').&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
513: </div>'.
1.487 www 514: '<input type="hidden" name="problemmode" value="saveedit" />'.
1.423 www 515: &problem_edit_buttons().'
1.459 bisitz 516: <hr style="clear:both;" />
1.409 albertel 517: '.&Apache::lonxml::message_location().'
1.408 albertel 518: </div>
519: '.
1.458 bisitz 520: '<table border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
1.105 albertel 521: }
522:
523: sub problem_edit_footer {
1.412 albertel 524: return '</td></tr></table><br />
525: <div class="LC_edit_problem_footer">
1.453 bisitz 526: <hr />'.
1.423 www 527: &problem_edit_buttons().'
1.459 bisitz 528: <hr style="clear:both;" />
1.412 albertel 529: </div>
530: '.
1.342 albertel 531: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 532: }
533:
1.235 albertel 534: sub option {
535: my ($value,$name) = @_;
536: my $result ="<option value='".$value."' ";
1.284 albertel 537: if ($env{'form.'.$name} eq $value) {
1.235 albertel 538: $result.=" selected='on' ";
539: }
540: $result.='>';
541: return $result;
542: }
543:
1.105 albertel 544: sub problem_web_to_edit_header {
1.159 albertel 545: my ($rndseed)=@_;
1.406 albertel 546: my $result .= '<div class="LC_edit_problem_header">';
547:
548: if (!$Apache::lonhomework::parsing_a_task) {
549: $result .=
550: '<div class="LC_edit_problem_header_title">'.
551: &mt('Problem Testing').
552: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
553: '</div>';
554: } else {
555: $result .=
556: '<div class="LC_edit_problem_header_title">'.
557: &mt('Task Testing').
558: '</div>';
559: }
560:
1.315 albertel 561: my $show_all_foils_text =
562: ($Apache::lonhomework::parsing_a_task) ?
1.452 bisitz 563: &mt('Show All Instances')
564: : &mt('Show All Foils');
1.315 albertel 565:
1.452 bisitz 566: my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
567: .'<input type="checkbox" name="showallfoils"';
1.440 bisitz 568: if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452 bisitz 569: $show_all.= ' /> '.$show_all_foils_text
570: .'</label></span>';
1.406 albertel 571:
572:
1.384 albertel 573:
1.406 albertel 574: $result .= '<div class="LC_edit_problem_header_status_row">';
1.313 albertel 575: if (!$Apache::lonhomework::parsing_a_task) {
576: $result.="
1.406 albertel 577: <div class='LC_edit_problem_header_row1'>
578: <span class=\"LC_nobreak\">
1.405 albertel 579: ".&mt("Problem Status:")."
1.235 albertel 580: <select name='problemstate'>
1.270 albertel 581: <option value=''></option>
1.235 albertel 582: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
583: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
584: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
585: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
586: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
587: </select>
1.406 albertel 588: </span>
589: <span class=\"LC_nobreak\">
1.405 albertel 590: ".&mt("Problem Type:")."
1.235 albertel 591: <select name='problemtype'>
1.270 albertel 592: <option value=''></option>
1.242 albertel 593: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
1.428 raeburn 594: ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242 albertel 595: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465 raeburn 596: ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
597: ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
598: ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428 raeburn 599: ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479 raeburn 600: ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235 albertel 601: </select>
1.406 albertel 602: </span>
603: $show_all
604: </div>
605: <div class='LC_edit_problem_header_row2'>
606: <span class=\"LC_nobreak\">
1.405 albertel 607: ".&mt("Feedback Mode:")."
1.235 albertel 608: <select name='problemstatus'>
609: <option value=''></option>
1.242 albertel 610: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.405 albertel 611: ".&option('no', 'problemstatus').&mt("Don't Show Incorect/Correct Feedback")."</option>
612: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 613: </select>
1.406 albertel 614: </span>
615: ";
616:
1.376 albertel 617: } elsif ($Apache::lonhomework::parsing_a_task) {
618: $result.="
1.406 albertel 619: <div class='LC_edit_problem_header_row1'>
620: <span class=\"LC_nobreak\">
1.405 albertel 621: ".&mt("Problem Status:")."
1.376 albertel 622: <select name='problemstate'>
623: <option value=''></option>
624: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
625: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
626: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
627: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
628: </select>
1.406 albertel 629: </span>
630: $show_all
631: ";
632: }
633: $result.='
634: <span class="LC_nobreak">
635: '.&mt('Apply style file: ').'
636: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
637: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
638: </span>
1.422 www 639: </div>
640: <div class="LC_edit_problem_header_row1">'.
641: &Apache::lonxml::renderingoptions().'
1.406 albertel 642: </div>
643: <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
644: <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
645: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
646: </div>
1.453 bisitz 647: <hr />
1.406 albertel 648: <div class="LC_edit_problem_header_randomize_row">
649: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
650: <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488 www 651: <input type="text" name="rndseed" size="24" value="'.
1.406 albertel 652: $rndseed.'"
653: onchange="javascript:document.lonhomework.changerandseed.click()" />';
654:
655: if (!$Apache::lonhomework::parsing_a_task) {
656: my $numtoanalyze=$env{'form.numtoanalyze'};
657: if (!$numtoanalyze) { $numtoanalyze=20; }
1.408 albertel 658: $result .= '<span class="LC_nobreak">'.
659: &mt('[_1] for [_2] versions.',
1.416 raeburn 660: '<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419 bisitz 661: 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
662: ,'<input type="text" name="numtoanalyze" value="'.
1.408 albertel 663: $numtoanalyze.'" size="5" />').
664: &Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
665: '</span>';
666:
1.313 albertel 667: }
1.406 albertel 668:
669: $result.='
670: </div>
1.453 bisitz 671: <hr />
1.447 bisitz 672: <div>';
1.416 raeburn 673: $result.='<input type="hidden" name="problemmode" value="view" />';
674: $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
675: 'onclick="javascript:setmode(this.form,'."'edit'".')" />';
676: $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
677: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408 albertel 678: $result.='
679: </div>
1.453 bisitz 680: <hr />
1.409 albertel 681: '.&Apache::lonxml::message_location().'
1.406 albertel 682: </div>';
1.159 albertel 683: return $result;
1.48 albertel 684: }
685:
1.65 albertel 686: sub initialize_storage {
1.357 albertel 687: my ($given_symb) = @_;
1.353 albertel 688: undef(%Apache::lonhomework::results);
689: undef(%Apache::lonhomework::history);
1.357 albertel 690: my ($symb,$courseid,$domain,$name) =
1.367 albertel 691: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 692:
693: # anonymous users (CODEd exams) have no data
694: if ($name eq 'anonymous'
695: && !defined($domain)) {
696: return;
697: }
698:
1.333 albertel 699: if ($env{'request.state'} eq 'construct'
700: || $symb eq ''
701: || $Apache::lonhomework::type eq 'practice') {
702:
703: my $namespace = $symb || $env{'request.uri'};
704: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 705: ($env{'form.resetdata'} eq &mt('New Problem Variation')
706: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 707: $env{'form.newrandomization'} eq &mt('New Randomization')) {
708: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
709: &Apache::lonxml::debug("Attempt reset");
710: }
1.159 albertel 711: %Apache::lonhomework::history=
1.333 albertel 712: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 713: my ($temp)=keys %Apache::lonhomework::history ;
714: &Apache::lonxml::debug("Return message of $temp");
715: } else {
716: %Apache::lonhomework::history=
717: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
718: }
1.353 albertel 719:
1.159 albertel 720: #ignore error conditions
1.67 albertel 721: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 722: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 723: }
724:
1.435 jms 725: =pod
726:
727: =item finalize_storage()
728:
729: Stores away the result has to a student's environment
730: checks form.grade_ for specific values, other wises stores
731: to the running users environment
732: Will increment totals for attempts, students, and corrects
733: if running user has student role.
734:
735: =cut
736:
737:
1.65 albertel 738: sub finalize_storage {
1.357 albertel 739: my ($given_symb) = @_;
1.159 albertel 740: my $result;
1.289 albertel 741: if (%Apache::lonhomework::results) {
1.323 albertel 742: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
743: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 744: my ($symb,$courseid,$domain,$name) =
1.367 albertel 745: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 746: if ($env{'request.state'} eq 'construct'
747: || $symb eq ''
748: || $Apache::lonhomework::type eq 'practice') {
749: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 750: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 751: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 752: $namespace,'',$domain,$name);
1.159 albertel 753: &Apache::lonxml::debug('Construct Store return message:'.$result);
754: } else {
755: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
756: $symb,$courseid,$domain,$name);
757: &Apache::lonxml::debug('Store return message:'.$result);
1.470 raeburn 758: &store_aggregates($symb,$courseid);
1.159 albertel 759: }
1.323 albertel 760: } else {
761: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 762: }
1.159 albertel 763: return $result;
1.65 albertel 764: }
765:
1.435 jms 766: =pod
767:
768: item store_aggregates()
769:
770: Sends hash of values to be incremented in nohist_resourcetracker.db
771: for the course. Increments total number of attempts, unique students
772: and corrects for each part for an instance of a problem, as appropriate.
773:
774: =cut
775:
1.285 raeburn 776: sub store_aggregates {
777: my ($symb,$courseid) = @_;
1.479 raeburn 778: my (%aggregate,%anoncounter,%randtrycounter);
1.286 albertel 779: my @parts;
1.288 albertel 780: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
781: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 782: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 783: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 784: push(@parts, $1);
1.285 raeburn 785: }
786: }
1.286 albertel 787: foreach my $part (@parts) {
1.470 raeburn 788: if ($env{'request.role'} =~/^st/) {
789: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
790: eq 'APPROX_ANS' ||
791: $Apache::lonhomework::results{'resource.'.$part.'.award'}
792: eq 'EXACT_ANS') {
793: $aggregate{$symb."\0".$part."\0correct"} = 1;
794: }
795: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
796: $aggregate{$symb."\0".$part."\0users"} = 1;
797: } else {
798: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
799: if ($last_reset) {
800: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
801: $aggregate{$symb."\0".$part."\0users"} = 1;
802: }
803: }
804: }
805: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 806: }
1.470 raeburn 807: if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') ||
1.479 raeburn 808: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
809: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
810: if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
811: $randtrycounter{$symb."\0".$part} = 1;
812: } else {
813: $anoncounter{$symb."\0".$part} = 1;
814: }
1.470 raeburn 815: my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
816: if ($needsrelease) {
817: my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
818: if ($curr_required eq '') {
1.471 raeburn 819: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 820: } else {
821: my ($currmajor,$currminor) = split(/\./,$curr_required);
822: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
823: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471 raeburn 824: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 825: }
1.292 raeburn 826: }
827: }
1.285 raeburn 828: }
829: }
1.292 raeburn 830: if (keys (%aggregate) > 0) {
1.289 albertel 831: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 832: $cdomain,$cname);
833: }
1.472 raeburn 834: if (keys(%anoncounter) > 0) {
1.481 raeburn 835: &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
836: $cdomain,$cname);
1.472 raeburn 837: }
1.479 raeburn 838: if (keys(%randtrycounter) > 0) {
1.481 raeburn 839: &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
840: $cdomain,$cname);
1.479 raeburn 841: }
1.292 raeburn 842: }
1.289 albertel 843:
1.65 albertel 844: sub checkout_msg {
1.211 albertel 845: my %lt=&Apache::lonlocal::texthash(
846: 'resource'=>'The resource needs to be checked out',
847: '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.',
848: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
849: 'checkout'=>'Check out Exam for Viewing',
850: 'checkout?'=>'Check out Exam?');
1.352 albertel 851: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 852: return (<<ENDCHECKOUT);
1.211 albertel 853: <h2>$lt{'resource'}</h2>
854: <p>$lt{'id_expln'}</p>
1.449 bisitz 855: <p class="LC_warning">$lt{'warning'}</p>
1.444 bisitz 856: <form name="checkout" method="post" action="$uri">
1.91 albertel 857: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 858: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 859: </form>
860: ENDCHECKOUT
861: }
862:
1.252 albertel 863: sub firstaccess_msg {
1.253 albertel 864: my ($time,$symb)=@_;
1.414 albertel 865: my $result;
866: my @interval=&Apache::lonnet::EXT("resource.0.interval");
867: if ($interval[1] eq 'map') {
868: my ($map)=&Apache::lonnet::decode_symb($symb);
869: my $foldertitle=&Apache::lonnet::gettitle($map);
870:
871: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.418 bisitz 872: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.'
873: .' Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
874: ,$foldertitle,$time)."</h2>";
1.414 albertel 875: } elsif ($interval[1] eq 'course') {
876: my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.418 bisitz 877: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.'
878: .' Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
879: ,$course,$time)."</h2>";
1.414 albertel 880: } else {
881: my $title=&Apache::lonnet::gettitle($symb);
1.418 bisitz 882: $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.'
883: .' Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
884: ,$title,$time)."</h2>";
1.414 albertel 885: }
1.352 albertel 886: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418 bisitz 887: my $buttontext = &mt('Show Resource');
888: my $timertext = &mt('Start Timer?');
1.414 albertel 889: $result .= (<<ENDCHECKOUT);
1.444 bisitz 890: <form name="markaccess" method="post" action="$uri">
1.252 albertel 891: <input type="hidden" name="markaccess" value="yes" />
1.418 bisitz 892: <input type="button" name="accessbutton" value="$buttontext" onClick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252 albertel 893: </form>
894: ENDCHECKOUT
1.414 albertel 895: return $result;
1.252 albertel 896: }
897:
1.204 albertel 898: sub init_problem_globals {
899: my ($type)=@_;
900: #initialize globals
1.308 foxr 901: # For problems, we start out in part 0 (outside a <part> tag).
902: # and part 0 is used to describe the main body of the <problem>
903: #
1.204 albertel 904: if ($type eq 'problem') {
905: $Apache::inputtags::part='0';
906: @Apache::inputtags::partlist=('0');
1.405 albertel 907: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 908: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 909:
1.266 albertel 910: } elsif ($type eq 'library') {
1.204 albertel 911: $Apache::inputtags::part='';
912: @Apache::inputtags::partlist=();
1.405 albertel 913: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 914: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 915:
1.304 albertel 916: } elsif ($type eq 'Task') {
917: $Apache::inputtags::part='0';
918: @Apache::inputtags::partlist=('0');
1.405 albertel 919: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 920: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 921: }
1.477 www 922: @Apache::functionplotresponse::callscripts=();
1.204 albertel 923: @Apache::inputtags::responselist = ();
924: @Apache::inputtags::importlist = ();
925: @Apache::inputtags::previous=();
926: @Apache::inputtags::previous_version=();
927: $Apache::structuretags::printanswer='No';
928: @Apache::structuretags::whileconds=();
929: @Apache::structuretags::whilebody=();
930: @Apache::structuretags::whileline=();
931: $Apache::lonhomework::scantronmode=0;
932: undef($Apache::lonhomework::name);
1.358 albertel 933: undef($Apache::lonhomework::default_type);
934: undef($Apache::lonhomework::type);
1.204 albertel 935: }
936:
937: sub reset_problem_globals {
938: my ($type)=@_;
939: undef(%Apache::lonhomework::history);
940: undef(%Apache::lonhomework::results);
941: undef($Apache::inputtags::part);
1.208 albertel 942: #don't undef this, lonhomework.pm takes care of this, we use this to
943: #detect if we try to do 2 problems in one file
944: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 945: undef($Apache::lonhomework::name);
1.358 albertel 946: undef($Apache::lonhomework::default_type);
947: undef($Apache::lonhomework::type);
948: undef($Apache::lonhomework::scantronmode);
949: undef($Apache::lonhomework::ignore_response_errors);
1.477 www 950: undef(@Apache::functionplotresponse::callscripts);
1.405 albertel 951: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 952: }
953:
1.241 albertel 954: sub set_problem_state {
1.240 albertel 955: my ($part)=@_;
1.284 albertel 956: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 957: $Apache::lonhomework::history{"resource.$part.solved"}=
958: 'correct_by_student';
959: }
960: }
961:
1.241 albertel 962: sub get_problem_status {
963: my ($part)=@_;
1.267 albertel 964: my $problem_status;
1.284 albertel 965: if ($env{'request.state'} eq 'construct' &&
966: defined($env{'form.problemstatus'})) {
967: $problem_status=$env{'form.problemstatus'};
1.267 albertel 968: } else {
969: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
970: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 971: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 972: }
973: return $problem_status;
974: }
975:
1.9 albertel 976: sub start_problem {
1.326 albertel 977: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 978:
1.311 foxr 979: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 980: if (!$Apache::lonxml::metamode) {
981: &Apache::lonxml::startredirection();
982: }
1.311 foxr 983:
1.308 foxr 984: # Problems don't nest and we don't allow more than one <problem> in
985: # a .problem file.
986: #
1.184 albertel 987: if ( $Apache::inputtags::part ne '' ||
988: $Apache::lonhomework::parsing_a_problem) {
989: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 990: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 991: return '';
992: }
1.184 albertel 993:
994: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 995: &init_problem_globals('problem');
1.166 albertel 996:
1.284 albertel 997: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 998: $Apache::lonhomework::scantronmode=1;
999: }
1.161 albertel 1000:
1.159 albertel 1001: if ($target ne 'analyze') {
1.415 raeburn 1002: my $type = &Apache::lonnet::EXT('resource.0.type');
1003: $Apache::lonhomework::type=$type;
1.284 albertel 1004: if (($env{'request.state'} eq 'construct') &&
1.410 albertel 1005: $env{'form.problemtype'} =~ /\S/) {
1.284 albertel 1006: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 1007: }
1.332 albertel 1008: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 1009: }
1.164 albertel 1010: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 1011: my $uri=$env{'request.uri'};
1.159 albertel 1012: if ($uri=~/\.(\w+)$/) {
1013: $Apache::lonhomework::type=$1;
1014: &Apache::lonxml::debug("Using type of $1");
1015: } else {
1016: $Apache::lonhomework::type='problem';
1017: &Apache::lonxml::debug("Using default type, problem, :$uri:");
1018: }
1.87 albertel 1019: }
1.301 albertel 1020: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 1021:
1.363 albertel 1022: &initialize_storage();
1.389 albertel 1023: if ($target ne 'analyze'
1024: && $env{'request.state'} eq 'construct') {
1025: &set_problem_state('0');
1026: }
1027:
1.366 albertel 1028: if ($target eq 'web') {
1029: &Apache::lonxml::debug(" grading history ");
1030: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1031: }
1.363 albertel 1032:
1.159 albertel 1033: #added vars to the scripting enviroment
1.213 albertel 1034: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 1035: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 1036: &Apache::run::run($expression,$safeeval);
1.159 albertel 1037: my $status;
1038: my $accessmsg;
1039:
1.343 albertel 1040: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 1041: my ($result,$form_tag_start);
1.354 albertel 1042: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
1043: || $target eq 'edit') {
1.350 albertel 1044: ($result,$form_tag_start) =
1045: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1046: $name);
1047: }
1048:
1.284 albertel 1049: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 1050:
1.479 raeburn 1051: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159 albertel 1052: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1053: $target eq 'tex') {
1.284 albertel 1054: if ($env{'form.markaccess'}) {
1.414 albertel 1055: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1056: &Apache::lonnet::set_first_access($interval[1]);
1.252 albertel 1057: }
1.479 raeburn 1058:
1059: ($status,$accessmsg,my $slot_name,my $slot) =
1060: &Apache::lonhomework::check_slot_access('0','problem');
1061: push (@Apache::inputtags::status,$status);
1062:
1.159 albertel 1063: #handle rand seed in construction space
1.479 raeburn 1064: my $rndseed=&setup_rndseed($safeeval,$target);
1.367 albertel 1065: my ($symb)=&Apache::lonnet::whichuser();
1.479 raeburn 1066:
1.333 albertel 1067: if ($env{'request.state'} ne "construct" &&
1068: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 1069: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.462 raeburn 1070: $rndseed.'" />'.
1071: '<input type="submit" name="resetdata"
1072: value="'.&mt('New Problem Variation').'" />';
1.334 albertel 1073: if (exists($env{'form.username'})) {
1074: $form_tag_start.=
1.164 albertel 1075: '<input type="hidden" name="username"
1.284 albertel 1076: value="'.$env{'form.username'}.'" />';
1.334 albertel 1077: }
1.462 raeburn 1078: if ($env{'request.role.adv'}) {
1079: $form_tag_start.= ' <label class="LC_nobreak">'
1080: .'<input type="checkbox" name="showallfoils"';
1081: if (defined($env{'form.showallfoils'})) {
1082: $form_tag_start.=' checked="checked"';
1083: }
1084: $form_tag_start.= ' /> '
1085: .&mt('Show All Foils')
1086: .'</label>';
1087: }
1.417 www 1088: if ($Apache::lonhomework::type eq 'practice') {
1.428 raeburn 1089: $form_tag_start.=&practice_problem_header();
1.417 www 1090: }
1.462 raeburn 1091: $form_tag_start.='<hr />';
1.479 raeburn 1092: } elsif (($env{'request.state'} ne "construct") &&
1093: ($Apache::lonhomework::type eq 'randomizetry') &&
1094: ($status eq 'CAN_ANSWER')) {
1095: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1096: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1097: $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries);
1098: }
1.324 albertel 1099:
1.159 albertel 1100: my $expression='$external::datestatus="'.$status.'";';
1101: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
1102: &Apache::run::run($expression,$safeeval);
1103: &Apache::lonxml::debug("Got $status");
1.324 albertel 1104:
1.159 albertel 1105: if (( $status eq 'CLOSED' ) ||
1106: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1107: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 1108: ( $status eq 'BANNED') ||
1.216 albertel 1109: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 1110: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 1111: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1112: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1113: $style);
1.159 albertel 1114: if ( $target eq "web" ) {
1.343 albertel 1115: my $msg;
1.159 albertel 1116: if ($status eq 'UNAVAILABLE') {
1.245 albertel 1117: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.441 raeburn 1118: } elsif ($status eq 'NOT_IN_A_SLOT') {
1119: $msg.='<h1>'.&mt('You are not currently signed up to work at this time and/or place.').'</h1>';
1.253 albertel 1120: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 1121: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 1122: }
1.216 albertel 1123: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 1124: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 1125: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 1126: $msg.=&checkout_msg();
1.252 albertel 1127: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 1128: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 1129: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.441 raeburn 1130: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.159 albertel 1131: }
1132: $result.=$msg.'<br />';
1133: } elsif ($target eq 'tex') {
1.332 albertel 1134: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
1135: : '\begin{minipage}{\textwidth}';
1.443 foxr 1136: $result.='\noindent \vskip 1 mm '.
1.332 albertel 1137: $startminipage.'\vskip 0 mm';
1.159 albertel 1138: if ($status eq 'UNAVAILABLE') {
1.211 albertel 1139: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 1140: } else {
1.211 albertel 1141: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 1142: }
1143: }
1.324 albertel 1144: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 1145: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1146: $style);
1.324 albertel 1147: if ($target eq 'web') {
1.375 albertel 1148: $result .=
1149: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 1150: } elsif ($target eq 'grade') {
1151: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
1152: 'problem');
1153: }
1.159 albertel 1154: } elsif ($target eq 'web') {
1.360 albertel 1155: if ($status eq 'CAN_ANSWER'
1156: && $slot_name ne ''
1157: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
1158: # unproctored slot access, self checkin
1159: &Apache::bridgetask::check_in('problem',undef,undef,
1160: $slot_name);
1161: }
1.368 albertel 1162: $result.="\n $form_tag_start \t".
1.227 albertel 1163: '<input type="hidden" name="submitted" value="yes" />';
1164: # create a page header and exit
1.284 albertel 1165: if ($env{'request.state'} eq "construct") {
1166: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428 raeburn 1167: if ($Apache::lonhomework::type eq 'practice') {
1168: $result.= '<input type="submit" name="resetdata" '.
1169: 'value="'.&mt('New Problem Variation').'" />'.
1170: &practice_problem_header().'<hr />';
1171: }
1.227 albertel 1172: }
1173: # if we are viewing someone else preserve that info
1.284 albertel 1174: if (defined $env{'form.grade_symb'}) {
1.227 albertel 1175: foreach my $field ('symb','courseid','domain','username') {
1176: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 1177: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 1178: }
1.479 raeburn 1179: foreach my $field ('trial','questiontype') {
1180: if ($env{"form.grade_$field"} ne '') {
1181: $result .= '<input type="hidden" name="grade_'.$field.
1182: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1183: }
1184: }
1.159 albertel 1185: }
1186: } elsif ($target eq 'tex') {
1.319 foxr 1187: $result .= 'INSERTTEXFRONTMATTERHERE';
1188:
1.99 sakharuk 1189: }
1.159 albertel 1190: } elsif ($target eq 'edit') {
1.343 albertel 1191: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 1192: $Apache::lonxml::warnings_error_header=
1193: &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 1194: my $temp=&Apache::edit::insertlist($target,$token);
1195: $result.=$temp;
1196: } elsif ($target eq 'modified') {
1197: $result=$token->[4];
1198: } else {
1199: # page_start returned a starting result, delete it if we don't need it
1200: $result = '';
1.99 sakharuk 1201: }
1.159 albertel 1202: return $result;
1.9 albertel 1203: }
1204:
1205: sub end_problem {
1.159 albertel 1206: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 1207: my $result;
1.310 foxr 1208:
1.321 albertel 1209: if (!$Apache::lonxml::metamode) {
1210: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 1211: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1212: }
1.319 foxr 1213:
1214: if ($target eq 'tex') {
1.321 albertel 1215: # Figure out the front matter and replace the
1216: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
1217: # this in end_problem because whether or not we display due
1218: # dates depends on whether due dates have already been
1219: # displayed in the problem parts.
1220:
1.319 foxr 1221: my $frontmatter = '';
1222: my $startminipage = '';
1223: if (not $env{'form.problem_split'}=~/yes/) {
1224: $startminipage = '\begin{minipage}{\textwidth}';
1225: }
1226: my $id = $Apache::inputtags::part;
1227: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1228: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1229: my @packages = split /,/,$packages;
1230: my $allow_print_points = 0;
1231: foreach my $partial_key (@packages) {
1232: if ($partial_key=~m/^part_0$/) {
1233: $allow_print_points=1;
1234: }
1235: }
1236: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1237: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
1238: if (lc($env{'course.'.$env{'request.course.id'}.
1239: '.disableexampointprint'}) eq 'yes') {
1240: $allow_print_points=0;
1241: }
1242: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443 foxr 1243: 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 1244: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
1245: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
1246:
1247: # Figure out what the due date is and if we need to print
1248: # it in the problem header. We have been logging the
1249: # last due date written to file.
1250:
1251: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
1252: my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448 bisitz 1253: my $duedate_text = &mt('Due date: [_1]'
1254: ,&Apache::lonlocal::locallocaltime($duetime));
1.319 foxr 1255: my $temp_file;
1256: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
1257:
1258: # Figure out what the last printed due date is or set it
1259: # to the epoch if no duedates have been printed.
1260:
1261: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
1262: if (-e $filename) {
1263: $temp_file = Apache::File->new($filename);
1264: my @due_file = <$temp_file>;
1265: $due_file_content = $due_file[$#due_file];
1266: chomp $due_file_content;
1267: }
1268:
1269: # We display the due date iff it is not the same as the last
1270: # duedate in problem header ($due_file_content), and
1271: # none of our parts displayed a duedate.
1272: #
1273: my $parts_with_displayduedate;
1274: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
1275: $parts_with_displayduedate =
1276: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
1277: } else {
1278: $parts_with_displayduedate = 0;
1279: }
1280: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
1281: $temp_file = Apache::File->new('>'.$filename);
1282: print $temp_file "$duetime\n";
1283: if (not $env{'request.symb'} =~ m/\.page_/) {
1284: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1285: $frontmatter .= $begin_doc.
1.448 bisitz 1286: '\textit{'.$duedate_text.'} '.$toc_line;
1.319 foxr 1287: } else {
1288: $frontmatter.= $begin_doc.$toc_line;
1.463 foxr 1289: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) {
1290: $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';
1291: }
1.319 foxr 1292: }
1293: } else {
1.448 bisitz 1294: $frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319 foxr 1295: }
1296: } else {
1297: if (not $env{'request.symb'} =~ m/\.page_/) {
1298: $frontmatter .= $begin_doc.$toc_line;
1.463 foxr 1299: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) {
1300: $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';
1301: }
1.319 foxr 1302: } else {
1.381 albertel 1303: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 1304: }
1305: }
1306: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
1307: }
1308:
1.159 albertel 1309: my $status=$Apache::inputtags::status['-1'];
1310: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
1311: $target eq 'tex') {
1.249 albertel 1312: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 1313: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 1314: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
1315: &Apache::inputtags::grade;
1.324 albertel 1316: } elsif ($status eq 'NEEDS_CHECKIN') {
1317: # no need to grade, and don't want to hide data
1.249 albertel 1318: } else {
1319: # move any submission data to .hidden
1320: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1321: }
1.159 albertel 1322: } elsif ( ($target eq 'web' || $target eq 'tex') &&
1323: $Apache::inputtags::part eq '0' &&
1.252 albertel 1324: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 1325: # if part is zero, no <part>s existed, so we need show the current
1326: # grading status
1327: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
1328: $result.= $gradestatus;
1329: }
1330: if (
1.284 albertel 1331: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 1332: ($target eq 'answer') || ($target eq 'tex')
1333: ) {
1.227 albertel 1334: if ($target ne 'tex' &&
1.284 albertel 1335: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 1336: $result.="</form>";
1.159 albertel 1337: }
1338: if ($target eq 'web') {
1.346 albertel 1339: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1340: } elsif ($target eq 'tex') {
1.178 sakharuk 1341: my $endminipage = '';
1.284 albertel 1342: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 1343: $endminipage = '\end{minipage}';
1344: }
1.284 albertel 1345: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 1346: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 1347: } else {
1.262 sakharuk 1348: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 1349: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 1350: $result .= $endminipage.'\end{document} ';
1351: } else {
1.382 albertel 1352: $result .= $endminipage;
1.262 sakharuk 1353: }
1.159 albertel 1354: }
1355: }
1356: }
1.476 www 1357: if ($target eq 'web') {
1358: $result.=&Apache::functionplotresponse::init_script();
1359: }
1.159 albertel 1360: if ($target eq 'grade') {
1361: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1362: &finalize_storage();
1363: }
1.284 albertel 1364: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
1365: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 1366: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 1367: # normally we get it from above, but in CSTR
1.172 albertel 1368: # we always show answer mode too.
1.159 albertel 1369: }
1370: } elsif ($target eq 'meta') {
1371: if ($Apache::inputtags::part eq '0') {
1.179 albertel 1372: @Apache::inputtags::response=();
1.159 albertel 1373: $result=&Apache::response::mandatory_part_meta;
1374: }
1.215 albertel 1375: $result.=&Apache::response::meta_part_order();
1.258 albertel 1376: $result.=&Apache::response::meta_response_order();
1.159 albertel 1377: } elsif ($target eq 'edit') {
1378: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1379: $result .= &problem_edit_footer();
1.320 albertel 1380: } elsif ($target eq 'modified') {
1381: $result .= $token->[2];
1.159 albertel 1382: }
1.155 albertel 1383:
1.284 albertel 1384: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1385: &Apache::inputtags::check_for_duplicate_ids();
1386: }
1.204 albertel 1387:
1388: &reset_problem_globals('problem');
1.159 albertel 1389:
1390: return $result;
1.48 albertel 1391: }
1392:
1.108 albertel 1393:
1.48 albertel 1394: sub start_library {
1.159 albertel 1395: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1396: my ($result,$form_tag_start);
1.371 albertel 1397: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1398: &init_problem_globals('library');
1399: $Apache::lonhomework::type='problem';
1400: }
1.159 albertel 1401: if ($target eq 'edit') {
1.343 albertel 1402: ($result,$form_tag_start)=
1403: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1404: 'Edit');
1405: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1406: my $temp=&Apache::edit::insertlist($target,$token);
1407: $result.=$temp;
1408: } elsif ($target eq 'modified') {
1409: $result=$token->[4];
1.340 albertel 1410: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1411: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1412: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1413: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1414: ($result,$form_tag_start)=
1415: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1416: $name);
1.479 raeburn 1417: my $rndseed=&setup_rndseed($safeeval,$target);
1.343 albertel 1418: $result.=" \n $form_tag_start".
1.159 albertel 1419: '<input type="hidden" name="submitted" value="yes" />';
1420: $result.=&problem_web_to_edit_header($rndseed);
1.428 raeburn 1421: if ($Apache::lonhomework::type eq 'practice') {
1422: $result.= '<input type="submit" name="resetdata" '.
1423: 'value="'.&mt('New Problem Variation').'" />'.
1424: &practice_problem_header().'<hr />';
1425: }
1.159 albertel 1426: }
1427: return $result;
1.48 albertel 1428: }
1429:
1430: sub end_library {
1.159 albertel 1431: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1432: my $result='';
1433: if ($target eq 'edit') {
1434: $result=&problem_edit_footer();
1.371 albertel 1435: } elsif ($target eq 'web'
1436: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1437: && $env{'request.state'} eq "construct") {
1.349 albertel 1438: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1439: }
1.371 albertel 1440: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1441: &reset_problem_globals('library');
1442: }
1.159 albertel 1443: return $result;
1.197 www 1444: }
1445:
1446: sub start_definetag {
1.326 albertel 1447: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1448:
1449: my $result;
1450:
1451: my $name = $token->[2]->{'name'};
1.326 albertel 1452: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1453: if ($target eq 'web') {
1454: if ($name=~/^\//) {
1455: $result=
1456: '<br /><table class="LC_sty_end"><tr><th>'.
1457: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1458: } else {
1459: $result=
1460: '<br /><table class="LC_sty_begin"><tr><th>'.
1461: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1462: }
1463: $skip = &HTML::Entities::encode($skip, '<>&"');
1464: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1465: }
1466: return $result;
1467: }
1468:
1469: sub end_definetag {
1470: return '';
1.1 albertel 1471: }
1472:
1473: sub start_block {
1.201 albertel 1474: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1475:
1476: my $result;
1.1 albertel 1477:
1.339 albertel 1478: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1479: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1480: my $code = $token->[2]->{'condition'};
1.385 albertel 1481: if (defined($code) && $code ne '') {
1.137 albertel 1482: if (!$Apache::lonxml::default_homework_loaded) {
1483: &Apache::lonxml::default_homework_load($safeeval);
1484: }
1.131 albertel 1485: $result = &Apache::run::run($code,$safeeval);
1486: &Apache::lonxml::debug("block :$code: returned :$result:");
1487: } else {
1488: $result='1';
1489: }
1490: if ( ! $result ) {
1.201 albertel 1491: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1492: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1493: }
1494: $result='';
1495: } elsif ($target eq 'edit') {
1496: $result .=&Apache::edit::tag_start($target,$token);
1497: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1498: $token,40);
1499: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1500: } elsif ($target eq 'modified') {
1501: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1502: $safeeval,'condition');
1503: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1504: }
1.131 albertel 1505: return $result;
1.1 albertel 1506: }
1507:
1508: sub end_block {
1.167 www 1509: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1510: my $result;
1511: if ($target eq "edit") {
1512: $result.= &Apache::edit::tag_end($target,$token,'');
1513: }
1514: return $result;
1515: }
1516:
1517: sub start_languageblock {
1.201 albertel 1518: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1519:
1520: my $result;
1521:
1.339 albertel 1522: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1523: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1524: my $include = $token->[2]->{'include'};
1525: my $exclude = $token->[2]->{'exclude'};
1.436 raeburn 1526: my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.394 www 1527: # This should not even happen, since we should at least have the server language
1.398 www 1528: if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
1529: # Now loop over all languages in order of preference
1530: foreach my $preferred_language (@preferred_languages) {
1.394 www 1531: # If the languageblock has no arguments, show the contents
1.399 www 1532: $result=1;
1533: my $found=0;
1.394 www 1534: # Do we have an include argument?
1.398 www 1535: if ($include) {
1.394 www 1536: # If include is specified, by default, don't render the block
1.399 www 1537: $result=0;
1.398 www 1538: foreach my $included_language (split(/\,/,$include)) {
1.394 www 1539: # ... but if my preferred language is included, render it
1.398 www 1540: if ($included_language eq $preferred_language) {
1.399 www 1541: $result=1;
1542: $found=1;
1.398 www 1543: }
1544: }
1545: }
1.394 www 1546: # Do we have an exclude argument?
1.398 www 1547: if ($exclude) {
1.399 www 1548: $result=1;
1.398 www 1549: foreach my $excluded_language (split(/\,/,$exclude)) {
1550: if ($excluded_language eq $preferred_language) {
1.399 www 1551: $result=0;
1552: $found=1;
1.398 www 1553: }
1554: }
1555: }
1.399 www 1556: if ($found) { last; }
1.398 www 1557: }
1.201 albertel 1558: if ( ! $result ) {
1559: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1560: $style);
1561: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1562: }
1563: $result='';
1.167 www 1564: } elsif ($target eq 'edit') {
1565: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1566: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1567: $token,40);
1.211 albertel 1568: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1569: $token,40);
1570: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1571: } elsif ($target eq 'modified') {
1572: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1573: $safeeval,'include',
1574: 'exclude');
1.167 www 1575: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1576: }
1577: return $result;
1578: }
1579:
1580: sub end_languageblock {
1.170 www 1581: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1582: my $result;
1.201 albertel 1583: if ($target eq "edit") {
1.170 www 1584: $result.= &Apache::edit::tag_end($target,$token,'');
1585: }
1586: return $result;
1587: }
1588:
1.397 albertel 1589: {
1590: my %available_texts;
1591: sub start_translated {
1592: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1593: &Apache::lonxml::register('Apache::structuretags',('lang'));
1594: undef(%available_texts);
1595: }
1596:
1597: sub end_translated {
1598: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1599: my $result;
1600: #show the translation on viewable targets
1601: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1602: # or non-viewable targets, if it's embedded in something that
1603: # wants the output
1604: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1605: && &Apache::lonxml::in_redirection() ) ) {
1606: my @possibilities = keys(%available_texts);
1607: my $which =
1608: &Apache::loncommon::languages(\@possibilities) || 'default';
1609: $result = $available_texts{$which};
1610: }
1611: undef(%available_texts);
1612: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1613: return $result;
1614: }
1615:
1616:
1617: sub start_lang {
1618: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1619: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1620: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1621: &Apache::lonxml::startredirection();
1622: }
1623: return '';
1624: }
1625:
1626: sub end_lang {
1627: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1628: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1629: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1630: my $result = &Apache::lonxml::endredirection();
1631: my $which = &Apache::lonxml::get_param('which',$parstack,
1632: $safeeval);
1.431 raeburn 1633: if ($which=~/\w/) {
1634: $available_texts{$which} = $result;
1635: }
1636: my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
1637: $safeeval);
1638: foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
1639: if ($language=~/\w/) {
1640: $available_texts{$language} = $result;
1641: }
1.427 bisitz 1642: }
1643:
1.397 albertel 1644: }
1645: return '';
1646: }
1647: }
1648:
1.170 www 1649: sub start_instructorcomment {
1.201 albertel 1650: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1651:
1652: my $result;
1653:
1.339 albertel 1654: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1655: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468 raeburn 1656: $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284 albertel 1657: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1658: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1659: $parser,$style);
1.170 www 1660: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1661: }
1662: $result='';
1663: } elsif ($target eq 'edit') {
1664: $result .=&Apache::edit::tag_start($target,$token);
1665: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1666: }
1667: return $result;
1668: }
1669:
1670: sub end_instructorcomment {
1.159 albertel 1671: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1672: my $result;
1673: if ($target eq "edit") {
1674: $result.= &Apache::edit::tag_end($target,$token,'');
1675: }
1676: return $result;
1.4 tsai 1677: }
1678:
1679: sub start_while {
1.326 albertel 1680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1681:
1.160 albertel 1682: my $result;
1.339 albertel 1683: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1684: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1685: my $code = $token->[2]->{'condition'};
1.4 tsai 1686:
1.160 albertel 1687: push( @Apache::structuretags::whileconds, $code);
1688: if (!$Apache::lonxml::default_homework_loaded) {
1689: &Apache::lonxml::default_homework_load($safeeval);
1690: }
1691: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1692: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1693: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1694: push( @Apache::structuretags::whileline, $token->[5]);
1695: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1696: if ( $result ) {
1697: &Apache::lonxml::newparser($parser,\$bodytext);
1698: }
1699: } elsif ($target eq 'edit') {
1700: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1701: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1702: $token,40);
1703: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1704: } elsif ($target eq 'modified') {
1705: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1706: $safeeval,'condition');
1707: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1708: }
1.160 albertel 1709: return $result;
1.4 tsai 1710: }
1711:
1712: sub end_while {
1.159 albertel 1713: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1714: my $result;
1715:
1.339 albertel 1716: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1717: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1718: my $code = pop(@Apache::structuretags::whileconds);
1719: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1720: my $line = pop(@Apache::structuretags::whileline);
1721: my $return = &Apache::run::run($code,$safeeval);
1722: my $starttime=time;
1723: my $error=0;
1724: while ($return) {
1725: if (time-$starttime >
1726: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1727: $return = 0; $error=1; next;
1.161 albertel 1728: }
1729: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1730: if ($target eq 'grade' || $target eq 'answer' ||
1731: $target eq 'analyze') {
1732: # grade/answer/analyze should produce no output but if we
1733: # are redirecting, the redirecter should know what to do
1734: # with the output
1735: if (!$Apache::lonxml::redirection) { undef($result); }
1736: }
1.161 albertel 1737: $return = &Apache::run::run($code,$safeeval);
1738: }
1739: if ($error) {
1.430 bisitz 1740: &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 1741: }
1742: } elsif ($target eq "edit") {
1743: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1744: }
1.160 albertel 1745: return $result;
1.1 albertel 1746: }
1.6 tsai 1747:
1.160 albertel 1748: # <randomlist show="1">
1.6 tsai 1749: # <tag1>..</tag1>
1750: # <tag2>..</tag2>
1751: # <tag3>..</tag3>
1.160 albertel 1752: # ...
1.6 tsai 1753: # </randomlist>
1754: sub start_randomlist {
1.326 albertel 1755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1756: my $result;
1.339 albertel 1757: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1758: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1759: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1760: my $b_parser= HTML::LCParser->new(\$body);
1761: $b_parser->xml_mode(1);
1762: $b_parser->marked_sections(1);
1.159 albertel 1763: my $b_tok;
1764: my @randomlist;
1765: my $list_item;
1766: while($b_tok = $b_parser->get_token() ) {
1767: if($b_tok->[0] eq 'S') { # start tag
1768: # get content of the tag until matching end tag
1769: # get all text upto the matching tag
1770: # and push the content into @randomlist
1771: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1772: $b_parser);
1773: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1774: push(@randomlist,$list_item);
1775: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1776: # $list_item</b>";
1777: }
1778: if($b_tok->[0] eq 'T') { # text
1779: # what to do with text in between tags?
1780: # print "<b>TEXT $b_tok->[1]</b><br />";
1781: }
1782: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1783: # print "<b>END-TAG $b_tok->[1]</b><br />";
1784: # }
1785: }
1.303 albertel 1786: if (@randomlist) {
1787: my @idx_arr = (0 .. $#randomlist);
1788: &Apache::structuretags::shuffle(\@idx_arr);
1789: my $bodytext = '';
1790: my $show=$#randomlist;
1791: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1792: $showarg--;
1793: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439 raeburn 1794: if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
1795: my @currlist;
1796: my $part = $Apache::inputtags::part;
1797: if ($part ne '') {
1798: if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
1799: my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
1800: if (!(grep(/^\Q$part\E$/,@currlist))) {
1801: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
1802: }
1803: } else {
1804: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
1805: }
1806: }
1807: }
1.303 albertel 1808: for(0 .. $show) {
1809: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1810: }
1811: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1812: }
1813: } elsif ($target eq 'edit' ) {
1814: $result .=&Apache::edit::tag_start($target,$token);
1815: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1816: $token,5);
1817: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1818: } elsif ($target eq 'modified' ) {
1819: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1820: $safeeval,'show');
1821: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1822: }
1823: return $result;
1.7 tsai 1824: }
1825:
1826: sub shuffle {
1827: my $a=shift;
1828: my $i;
1.303 albertel 1829: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1830: &Apache::response::pushrandomnumber();
1.159 albertel 1831: for($i=@$a;--$i;) {
1832: my $j=int(&Math::Random::random_uniform() * ($i+1));
1833: next if $i == $j;
1834: @$a[$i,$j] = @$a[$j,$i];
1835: }
1.251 albertel 1836: &Apache::response::poprandomnumber();
1.7 tsai 1837: }
1.6 tsai 1838: }
1839:
1840: sub end_randomlist {
1.159 albertel 1841: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1842: my $result;
1843: if ($target eq 'edit' ) {
1844: $result=&Apache::edit::tag_end($target,$token,
1845: 'End Randomly Parsed Block');
1846: }
1847: return $result;
1.6 tsai 1848: }
1849:
1.283 albertel 1850: sub ordered_show_check {
1851: my $last_part=$Apache::inputtags::partlist[-2];
1852: my $in_order=
1853: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1854: my $in_order_show=1;
1855: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1856: $in_order_show=&Apache::response::check_status($last_part);
1857: }
1858: return $in_order_show;
1859: }
1860:
1.469 www 1861:
1862: sub start_startpartmarker {
1863: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1864: my $result='';
1865: if ($target eq 'edit') {
1866: $result=&Apache::edit::tag_start($target,$token);
1867: $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
1868: $result.=&Apache::edit::end_table();
1869:
1870: }
1871: return $result;
1872: }
1873:
1874: sub end_startpartmarker {
1875: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1876: my @result;
1877: if ($target eq 'edit') { $result[1]='no'; }
1878: return @result;
1879: }
1880:
1881: sub start_endpartmarker {
1882: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1883: my $result='';
1884: if ($target eq 'edit') {
1885: $result=&Apache::edit::tag_start($target,$token);
1886: $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
1887: $result.=&Apache::edit::end_table();
1888:
1889: }
1890: return $result;
1891: }
1892:
1893: sub end_endpartmarker {
1894: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1895: my @result;
1896: if ($target eq 'edit') { $result[1]='no'; }
1897: return @result;
1898: }
1899:
1900:
1901:
1902:
1903:
1.11 albertel 1904: sub start_part {
1.326 albertel 1905: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 1906: if (!$Apache::lonxml::metamode) {
1907: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1908: # duedates.
1909: }
1.159 albertel 1910: my $result='';
1.386 albertel 1911: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 1912: $Apache::inputtags::part=$id;
1.177 albertel 1913: push(@Apache::inputtags::partlist,$id);
1914: @Apache::inputtags::response=();
1.159 albertel 1915: @Apache::inputtags::previous=();
1916: @Apache::inputtags::previous_version=();
1.405 albertel 1917: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 1918: &Apache::response::reset_params();
1919:
1.159 albertel 1920: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1921: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1922: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1923: my $in_order_show=&ordered_show_check();
1.214 albertel 1924: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1925: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1926: &Apache::run::run($expression,$safeeval);
1.159 albertel 1927:
1928: if ($target eq 'meta') {
1.224 www 1929: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1930: return &Apache::response::mandatory_part_meta.
1931: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1932: } elsif ($target eq 'web' || $target eq 'grade' ||
1933: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1934: if ($hidden || !$in_order_show) {
1.326 albertel 1935: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 1936: } else {
1937: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1938: push (@Apache::inputtags::status,$status);
1939: my $expression='$external::datestatus="'.$status.'";';
1940: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1941: &Apache::run::run($expression,$safeeval);
1.284 albertel 1942: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1943: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1944: }
1.216 albertel 1945: if (( $status eq 'CLOSED' ) ||
1946: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1947: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1948: ( $status eq 'BANNED') ||
1949: ( $status eq 'UNAVAILABLE') ||
1950: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1951: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
1952: $style);
1.159 albertel 1953: if ( $target eq "web" ) {
1.211 albertel 1954: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1955: } elsif ( $target eq 'tex' ) {
1.284 albertel 1956: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1957: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1958: } else {
1.211 albertel 1959: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1960: }
1.159 albertel 1961: }
1962: } else {
1963: if ($target eq 'tex') {
1.284 albertel 1964: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1965: if ($$tagstack[-2] eq 'td') {
1.388 foxr 1966: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 1967: } else {
1968: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1969: }
1.195 sakharuk 1970: }
1.159 albertel 1971: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1972: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1973: my @allkeys = split /,/,$allkeys;
1974: my $allow_print_points = 0;
1975: foreach my $partial_key (@allkeys) {
1.230 albertel 1976: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1977: if ($1 ne '0') {$allow_print_points=1;}
1978: }
1979: }
1.275 albertel 1980: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1981: if (defined($maxtries) && $maxtries < 0) {
1982: $allow_print_points=0;
1983: }
1.302 albertel 1984: if (lc($env{'course.'.$env{'request.course.id'}.
1985: '.disableexampointprint'}) eq 'yes') {
1986: $allow_print_points=0;
1987: }
1.463 foxr 1988: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) {
1989: $result .= '\vskip 10mm\fbox{\textit{'.$weight.' pt}}';
1990:
1991: }
1.233 www 1992: } elsif ($target eq 'web') {
1.479 raeburn 1993: if ($status eq 'CAN_ANSWER') {
1994: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1995: my $probrandomize = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].type");
1996: my $probrandtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].randomizeontries");
1997: my $num = scalar(@Apache::inputtags::partlist)-1;
1998: if ($probrandomize eq 'randomizetry') {
1999: if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") ne 'randomizetry') {
2000: $result .= &randomizetry_part_header($problemstatus,'none',$num);
2001: } else {
2002: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
2003: if ($probrandtries ne $reqtries) {
2004: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
2005: }
2006: }
2007: } elsif (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") eq 'randomizetry') {
2008: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
2009: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
2010: }
2011: }
1.475 raeburn 2012: $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159 albertel 2013: }
2014: }
2015: }
2016: } elsif ($target eq 'edit') {
2017: $result.=&Apache::edit::tag_start($target,$token);
2018: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
2019: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 2020: ' '.
2021: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 2022: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
2023: } elsif ($target eq 'modified') {
2024: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 2025: $safeeval,'id','display');
1.159 albertel 2026: if ($constructtag) {
1.225 albertel 2027: #limiting ids to only letters numbers, and space
1.224 www 2028: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 2029: $result = &Apache::edit::rebuild_tag($token);
2030: }
2031: }
2032: return $result;
1.11 albertel 2033: }
2034:
2035: sub end_part {
1.159 albertel 2036: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2037: &Apache::lonxml::debug("in end_part $target ");
2038: my $status=$Apache::inputtags::status['-1'];
2039: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 2040: my $in_order_show=&ordered_show_check();
1.321 albertel 2041: my $result;
2042: if (!$Apache::lonxml::metamode) {
2043: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 2044: $Apache::lonxml::post_evaluate=0;
1.321 albertel 2045: }
1.312 albertel 2046: if ($target eq 'grade') {
1.249 albertel 2047: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 2048: !$hidden && $in_order_show) {
1.311 foxr 2049: $result.=&Apache::inputtags::grade;
1.249 albertel 2050: } else {
2051: # move any submission data to .hidden
2052: &Apache::inputtags::hidealldata($Apache::inputtags::part);
2053: }
1.283 albertel 2054: } elsif (($target eq 'web' || $target eq 'tex') &&
2055: !$hidden && $in_order_show) {
1.159 albertel 2056: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
2057: $target);
1.212 albertel 2058: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
2059: $gradestatus='';
2060: }
1.311 foxr 2061: $result.=$gradestatus;
1.265 sakharuk 2062: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 2063: } elsif ($target eq 'edit') {
1.311 foxr 2064: $result.=&Apache::edit::end_table();
1.322 albertel 2065: } elsif ($target eq 'modified') {
2066: $result .= $token->[2];
1.159 albertel 2067: }
2068: pop @Apache::inputtags::status;
2069: $Apache::inputtags::part='';
1.295 albertel 2070: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 2071: return $result;
1.11 albertel 2072: }
1.1 albertel 2073:
1.25 albertel 2074: sub start_preduedate {
1.326 albertel 2075: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 2076: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2077: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 2078: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 2079: if (!$Apache::lonhomework::scantronmode &&
2080: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 2081: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
2082: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 2083: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 2084: }
1.24 albertel 2085: }
1.159 albertel 2086: return '';
1.24 albertel 2087: }
2088:
1.25 albertel 2089: sub end_preduedate {
1.159 albertel 2090: return '';
1.24 albertel 2091: }
2092:
1.369 foxr 2093: # In all the modes where <postanswerdate> text is
2094: # displayable, all we do is eat up the text between the start/stop
2095: # tags if the conditions are not right to display it.
1.25 albertel 2096: sub start_postanswerdate {
1.326 albertel 2097: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 2098: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
2099: &Apache::lonnet::allowed('pav',
2100: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 2101: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 2102: $target eq 'tex' ) {
1.300 albertel 2103: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 2104: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
2105: (($target eq 'tex') && !$pav)) {
1.326 albertel 2106: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 2107: }
2108: }
2109: return '';
1.24 albertel 2110: }
2111:
1.25 albertel 2112: sub end_postanswerdate {
1.159 albertel 2113: return '';
1.24 albertel 2114: }
2115:
1.25 albertel 2116: sub start_notsolved {
1.326 albertel 2117: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2118: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 2119: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 2120: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
2121: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 2122: if ($gradestatus =~ /^correct/ &&
2123: &Apache::response::show_answer()) {
1.159 albertel 2124: &Apache::lonxml::debug("skipping");
1.326 albertel 2125: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 2126: }
1.24 albertel 2127: }
1.159 albertel 2128: return '';
1.24 albertel 2129: }
2130:
1.25 albertel 2131: sub end_notsolved {
1.159 albertel 2132: return '';
1.24 albertel 2133: }
2134:
2135: sub start_solved {
1.326 albertel 2136: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2137: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2138: $target eq 'tex') {
2139: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 2140: if ($gradestatus !~ /^correct/ ||
2141: !&Apache::response::show_answer()) {
1.326 albertel 2142: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 2143: }
1.24 albertel 2144: }
1.159 albertel 2145: return '';
1.24 albertel 2146: }
2147:
2148: sub end_solved {
1.248 albertel 2149: return '';
2150: }
2151:
2152: sub start_problemtype {
1.326 albertel 2153: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 2154: my $result;
1.339 albertel 2155: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2156: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 2157: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
2158: if (!defined($mode)) { $mode='show'; }
2159: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
2160: my $found=0;
2161: foreach my $type (split(',',$for)) {
2162: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
2163: }
2164: if ($mode eq 'show' && !$found) {
1.326 albertel 2165: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 2166: }
2167: if ($mode eq 'hide' && $found) {
1.326 albertel 2168: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 2169: }
2170: } elsif ($target eq 'edit') {
2171: $result .=&Apache::edit::tag_start($target,$token);
2172: $result.=&Apache::edit::select_arg('Mode:','mode',
2173: [['show','Show'],
2174: ['hide','Hide']]
2175: ,$token);
2176: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
2177: [ ['exam','Exam/Quiz Problem'],
2178: ['survey','Survey'],
1.465 raeburn 2179: ['surveycred','Survey (with credit)'],
2180: ['anonsurvey','Anonymous Survey'],
2181: ['anonsurveycred','Anonymous Survey (with credit)'],
1.428 raeburn 2182: ['problem','Homework Problem'],
1.479 raeburn 2183: ['practice','Practice Problem'],
2184: ['randomizetry','New Randomization Each Try'] ]
1.248 albertel 2185: ,$token);
2186: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2187: } elsif ($target eq 'modified') {
2188: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2189: $safeeval,'mode','for');
2190: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2191: }
2192: return $result;
2193: }
2194:
2195: sub end_problemtype {
1.159 albertel 2196: return '';
1.24 albertel 2197: }
1.34 albertel 2198:
2199: sub start_startouttext {
1.159 albertel 2200: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2201: my @result=(''.'');
2202: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 2203:
2204: my $nesting =
2205: &Apache::lonxml::set_state('outtext',
2206: &Apache::lonxml::get_state('outtext')+1);
2207: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
2208: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
2209: }
1.159 albertel 2210: return (@result);
1.34 albertel 2211: }
1.159 albertel 2212:
1.34 albertel 2213: sub end_startouttext {
1.326 albertel 2214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2215: my $result='';
2216: my $text='';
2217: if ($target eq 'edit') {
1.424 foxr 2218: my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326 albertel 2219: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.437 raeburn 2220: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>"
1.438 bisitz 2221: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437 raeburn 2222: .&Apache::edit::deletelist($target,$token)
1.474 raeburn 2223: .'</span></td>'
2224: .'<td align="left"><span id="math_'.$areaid.'" />'
2225: .&Apache::lonhtmlcommon::dragmath_button($areaid,1)
2226: .'<span></td>'
2227: .'<td>'
2228: .&Apache::edit::insertlist($target,$token)
2229: .'</td>'
2230: .'<td align="right" valign="top">' .
2231: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 2232: &Apache::edit::end_row().
1.362 albertel 2233: &Apache::edit::start_spanning_row()."\n".
1.255 www 2234: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 2235: }
2236: if ($target eq 'modified') {
1.219 albertel 2237: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 2238: }
2239: if ($target eq 'tex') {
2240: $result .= '\noindent ';
2241: }
2242: return $result;
1.34 albertel 2243: }
1.159 albertel 2244:
1.34 albertel 2245: sub start_endouttext {
1.159 albertel 2246: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2247: my $result='';
2248: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
2249: if ($target eq "modified") {
2250: $result='<endouttext />'.
1.377 albertel 2251: &Apache::edit::handle_insertafter('startouttext');
2252: }
1.404 albertel 2253:
2254: my $nesting =
2255: &Apache::lonxml::set_state('outtext',
2256: &Apache::lonxml::get_state('outtext')-1);
2257: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
2258: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
2259: &Apache::lonxml::set_state('outtext', 0);
2260: }
1.159 albertel 2261: return $result;
1.34 albertel 2262: }
1.159 albertel 2263:
1.34 albertel 2264: sub end_endouttext {
1.159 albertel 2265: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2266: my @result=('','');
2267: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
2268: return (@result);
1.34 albertel 2269: }
1.159 albertel 2270:
1.45 albertel 2271: sub delete_startouttext {
1.326 albertel 2272: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2273: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 2274: my $text=$$parser['-1']->get_text("/endouttext");
2275: my $ntoken=$$parser['-1']->get_token();
2276: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
2277: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
2278: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
2279: # they did the last time round
2280: &Apache::lonxml::increasedepth($ntoken);
2281: &Apache::lonxml::decreasedepth($ntoken);
2282: return 1;
1.193 www 2283: }
2284:
2285: sub start_simpleeditbutton {
2286: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2287: my $result='';
1.284 albertel 2288: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 2289: ($target eq 'web') &&
1.330 albertel 2290: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 2291: my $url=$env{'request.noversionuri'};
1.193 www 2292: $url=~s/\?.*$//;
1.367 albertel 2293: my ($symb) = &Apache::lonnet::whichuser();
1.451 bisitz 2294: # Warning makes more sense and is more important on edit screen
1.442 bisitz 2295: # $result='<p class="LC_warning">'
2296: # .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
2297: # .&Apache::loncommon::help_open_topic('Caching')
2298: # .'</p>';
1.486 www 2299: $result.=&Apache::loncommon::head_subbox(
2300: &Apache::lonhtmlcommon::start_funclist()
1.451 bisitz 2301: .&Apache::lonhtmlcommon::add_item_funclist(
2302: '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
2303: .&mt('Edit').'</a>')
1.486 www 2304: .&Apache::lonhtmlcommon::end_funclist());
1.442 bisitz 2305:
1.193 www 2306: }
2307: return $result;
2308: }
2309:
2310: sub end_simpleeditbutton {
2311: return '';
1.45 albertel 2312: }
1.34 albertel 2313:
1.428 raeburn 2314: sub practice_problem_header {
2315: return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
2316: '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
2317: '</span>';
2318: }
2319:
1.479 raeburn 2320: sub randomizetry_problem_header {
2321: my ($problemstatus,$reqtries) = @_;
2322: my ($header,$text);
2323: if ($reqtries > 1) {
2324: $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
2325: if (($problemstatus eq 'no') ||
2326: ($problemstatus eq 'no_feedback_ever')) {
2327: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
2328: } else {
2329: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
2330: }
2331: } else {
2332: $header = &mt('New Problem Variation Each Try');
2333: if (($problemstatus eq 'no') ||
2334: ($problemstatus eq 'no_feedback_ever')) {
2335: $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
2336:
2337: } else {
2338: $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
2339: }
2340: }
2341: return '<span class="LC_info"><h3>'.$header.'</h3></span>'.
2342: '<span class="LC_info">'.$text.'</span><hr />';
2343: }
2344:
2345: sub randomizetry_part_header {
2346: my ($problemstatus,$reqtries,$num) = @_;
2347: my ($header,$text);
2348: if ($reqtries eq 'none') {
2349: $header = &mt('No Question Variation');
2350: $text = &mt('For this question there will no new variation after a try.');
2351: } elsif ($reqtries > 1) {
2352: $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
2353: if (($problemstatus eq 'no') ||
2354: ($problemstatus eq 'no_feedback_ever')) {
2355: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
2356: } else {
2357: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
2358: }
2359: } else {
2360: $header = &mt('New Question Variation For Each Try');
2361: if (($problemstatus eq 'no') ||
2362: ($problemstatus eq 'no_feedback_ever')) {
2363: $text = &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
2364: } else {
2365: $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
2366: }
2367: }
2368: my $output;
2369: if ($num > 1) {
2370: $output .= '<hr />';
2371: }
2372: $output .= '<span class="LC_info"><h4>'.$header.'</h4></span>'.
2373: '<span class="LC_info">'.$text.'</span><br /><br />';
2374: return $output;
2375: }
2376:
1.1 albertel 2377: 1;
2378: __END__
1.435 jms 2379:
2380: =pod
2381:
2382: =back
2383:
2384: =cut
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