1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
3: #
4: # $Id: structuretags.pm,v 1.199 2003/07/25 10:44:36 www Exp $
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: #
28: # 2/19 Guy
29: # 6/26/2001 fixed extra web display at end of <web></web> tags
30: # 8/17,8/18,8/20 Gerd Kortemeyer
31:
32:
33: package Apache::structuretags;
34:
35: use strict;
36: use Apache::lonnet;
37: use Apache::File();
38: use Apache::lonmenu;
39:
40: BEGIN {
41: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext',
42: 'simpleeditbutton','definetag'));
43: }
44:
45: sub start_web {
46: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
47: if (!($target eq 'web' || $target eq 'edit' || $target eq 'modified' ||
48: $target eq 'answer' || $target eq 'grade' || $target eq 'meta' )) {
49: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
50: }
51: return '';
52: }
53:
54: sub end_web {
55: return '';
56: }
57:
58: sub start_tex {
59: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
60: my $result='';
61: if (!($target eq 'edit' || $target eq 'modified' ||
62: $target eq 'answer' || $target eq 'grade' || $target eq 'meta' )) {
63: &Apache::lonxml::debug("tex 1");
64: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
65: } elsif ($target eq 'tex') {
66: $result=&Apache::lonxml::get_all_text("/tex",$parser);
67: }
68: return $result;;
69: }
70:
71: sub end_tex {
72: return '';
73: }
74:
75: sub page_start {
76: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
77: my %found;
78: foreach my $taginside ($tagstack) {
79: foreach my $taglookedfor ('html','body','form') {
80: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
81: }
82: }
83:
84: my $result;
85: my $head_tag_start;
86: if (!defined($found{'html'})) {
87: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
88: $parstack,$parser,$safeeval);
89: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
90: }
91: my $body_tag_start;
92: if (!defined($found{'body'})) {
93: $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
94: 'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
95: my $background=&Apache::lonxml::get_param('background',$parstack,
96: $safeeval);
97: if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
98: if ($background) {
99: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
100: $background;
101: $body_tag_start.='background="'.$background.'" ';
102: } else {
103: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
104: $safeeval);
105: if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
106: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
107: } else {
108: $body_tag_start.='bgcolor="#ffffff"';
109: }
110: }
111: if ($ENV{'browser.fontenhance'} eq 'on') {
112: $body_tag_start.=' style="font-size: x-large;" ';
113: }
114: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
115: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
116: my ($symb,undef,undef,undef,$publicuser)=
117: &Apache::lonxml::whichuser();
118: if ($symb eq '' && !$publicuser) {
119: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
120: $help="Browsing resource, all submissions are temporary.<br />";
121: $body_tag_start.=$help;
122: }
123: }
124: }
125: my $form_tag_start;
126: if (!defined($found{'form'})) {
127: $form_tag_start='<form name="lonhomework" method="POST" action="'.
128: $ENV{'request.uri'}.'">';
129: }
130: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
131: }
132:
133: #use Time::HiRes();
134: sub get_resource_name {
135: my ($parstack,$safeeval)=@_;
136: my $name=&Apache::lonnet::gettitle();
137: if ($name eq '') {
138: $name=&Apache::lonnet::EXT('resource.title');
139: if ($name eq 'con_lost') { $name = ''; }
140: }
141: $Apache::lonhomework::name=$name;
142: return $name;
143: }
144:
145: sub setup_rndseed {
146: my ($safeeval)=@_;
147: my $rndseed;
148: my ($symb)=&Apache::lonxml::whichuser();
149: if ($ENV{'request.state'} eq "construct" || $symb eq '') {
150: $rndseed=$ENV{'form.rndseed'};
151: if (!$rndseed) {
152: $rndseed=$Apache::lonhomework::history{'rndseed'};
153: if (!$rndseed) {
154: $rndseed=time;
155: $ENV{'form.rndseed'}=$rndseed;
156: }
157: }
158: if ($ENV{'form.resetdata'} eq 'New Problem Variation' ||
159: $ENV{'form.newrandomization'} eq 'New Randomization') {
160: srand(time);
161: $rndseed=int(rand(2100000000));
162: $ENV{'form.rndseed'}=$rndseed;
163: delete($ENV{'form.resetdata'});
164: delete($ENV{'form.newrandomization'});
165: }
166: if (defined($rndseed) && $rndseed ne int($rndseed)) {
167: $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
168: }
169: &Apache::lonxml::debug("Setting rndseed to $rndseed");
170: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
171: }
172: return $rndseed;
173: }
174:
175: sub problem_edit_header {
176: return '<input type="hidden" name="submitted" value="edit" />
177: <input type="hidden" name="problemmode" value="Edit" />
178: <input type="submit" name="problemmode" value="Discard Edits and View" />
179: <input type="submit" name="problemmode" value="EditXML" />
180: <input type="submit" name="Undo" value="undo" /> <hr />
181: <input type="submit" name="submit" value="Submit Changes and Edit" />
182: <input type="submit" name="submit" value="Submit Changes and View" /><br /><p> </p><table border="0"><tr><td bgcolor="#DDDDDD">
183: ';
184: }
185:
186: sub problem_edit_footer {
187: return '</td></tr></table><br /><input type="submit" name="submit" value="Submit Changes and Edit" />
188: <input type="submit" name="submit" value="Submit Changes and View" />';
189: }
190:
191: sub problem_web_to_edit_header {
192: my ($rndseed)=@_;
193: my $result.='<input type="hidden" name="problemmode" value="View" />
194: <input type="submit" name="problemmode" value="Edit" />
195: <input type="submit" name="problemmode" value="EditXML" />
196: <input type="submit" name="newrandomization" value="New Randomization" />
197: <input type="submit" name="resetdata" value="Reset Submissions" />
198: <nobr><input type="submit" name="changerandseed" value="Change Random Seed To:" />
199: <input type="text" name="rndseed" width="10" value="'.
200: $rndseed.'"
201: onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
202: <input type="checkbox" name="showallfoils" ';
203: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
204: $result.= ' /> Show All Foils
205: <hr />';
206: my $numtoanalyze=$ENV{'form.numtoanalyze'};
207: if (!$numtoanalyze) { $numtoanalyze=20; }
208: $result.= '<input type="submit" name="problemmode" value="Calculate answers" /> for
209: <input type="text" name="numtoanalyze" value="'.
210: $numtoanalyze.'" size="5" /> versions of this problem.'.
211: &Apache::loncommon::help_open_topic("Analyze_Problem",
212: '',undef,undef,300).
213: '<hr />';
214: return $result;
215: }
216:
217: sub initialize_storage {
218: %Apache::lonhomework::results=();
219: %Apache::lonhomework::history=();
220: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
221: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
222: %Apache::lonhomework::history=
223: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
224: my ($temp)=keys %Apache::lonhomework::history ;
225: &Apache::lonxml::debug("Return message of $temp");
226: } else {
227: %Apache::lonhomework::history=
228: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
229: }
230: #ignore error conditions
231: my ($temp)=keys %Apache::lonhomework::history ;
232: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
233: }
234:
235: # -------------------------------------------------------------finalize_storage
236: # Stores away the result has to a student's environment
237: # checks form.grade_ for specific values, other wises stores
238: # to the running users environment
239: sub finalize_storage {
240: my $result;
241: my ($temp) = keys %Apache::lonhomework::results;
242: if ( $temp ne '' ) {
243: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
244: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
245: $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};
246: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
247: $ENV{'request.uri'},'',$domain,$name);
248: &Apache::lonxml::debug('Construct Store return message:'.$result);
249: } else {
250: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
251: $symb,$courseid,$domain,$name);
252: &Apache::lonxml::debug('Store return message:'.$result);
253: }
254: }
255: return $result;
256: }
257:
258: sub checkout_msg {
259: return (<<ENDCHECKOUT);
260: <h2>The resource needs to be checked out</h2>
261: As a resource gets checked out, a unique timestamped ID is given to it, and a
262: permanent record is left in the system.<p />
263: <font color=red>
264: Checking out resources is subject to course policies, and may exclude future
265: credit even if done erroneously.<p />
266: </font>
267: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
268: <input type="hidden" name="doescheckout" value="yes" />
269: <input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />
270: </form>
271: ENDCHECKOUT
272: }
273:
274: sub start_problem {
275: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
276:
277: if ( $Apache::inputtags::part ne '' ||
278: $Apache::lonhomework::parsing_a_problem) {
279: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
280: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
281: return '';
282: }
283:
284: $Apache::lonhomework::parsing_a_problem=1;
285: #initialize globals
286: $Apache::inputtags::part='0';
287: @Apache::inputtags::partlist=('0');
288: @Apache::inputtags::responselist = ();
289: @Apache::inputtags::importlist = ();
290: @Apache::inputtags::previous=();
291: @Apache::inputtags::previous_version=();
292: $Apache::structuretags::printanswer='No';
293: @Apache::structuretags::whileconds=();
294: @Apache::structuretags::whilebody=();
295: @Apache::structuretags::whileline=();
296: $Apache::lonhomework::scantronmode=0;
297: $Apache::lonhomework::problemstatus=
298: &Apache::lonnet::EXT('resource.0.problemstatus');
299:
300: if (defined($ENV{'scantron.maxquest'})) {
301: $Apache::lonhomework::scantronmode=1;
302: }
303:
304: if ($target ne 'analyze') {
305: &initialize_storage();
306: if ($target eq 'web') {
307: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
308: }
309: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
310: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
311: }
312: if ($Apache::lonhomework::type eq '' ) {
313: my $uri=$ENV{'request.uri'};
314: if ($uri=~/\.(\w+)$/) {
315: $Apache::lonhomework::type=$1;
316: &Apache::lonxml::debug("Using type of $1");
317: } else {
318: $Apache::lonhomework::type='problem';
319: &Apache::lonxml::debug("Using default type, problem, :$uri:");
320: }
321: }
322:
323: #added vars to the scripting enviroment
324: my $expression='$external::part='.$Apache::inputtags::part.';';
325: &Apache::run::run($expression,$safeeval);
326: my $status;
327: my $accessmsg;
328:
329: #should get back a <html> or the neccesary stuff to start XML/MathML
330: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
331: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
332: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
333:
334: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
335: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
336: $target eq 'tex') {
337: #handle exam checkout
338: if ($Apache::lonhomework::type eq 'exam') {
339: my $token=
340: $Apache::lonhomework::history{"resource.0.outtoken"};
341: if (($ENV{'form.doescheckout'}) && (!$token)) {
342: $token=&Apache::lonxml::maketoken();
343: $Apache::lonhomework::history{"resource.0.outtoken"}=
344: $token;
345: }
346: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
347: }
348:
349: #handle rand seed in construction space
350: my $rndseed=&setup_rndseed($safeeval);
351: my ($symb)=&Apache::lonxml::whichuser();
352: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
353: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
354: $rndseed.'" />'.
355: '<input type="submit" name="resetdata"
356: value="New Problem Variation" />'.
357: '<input type="hidden" name="username"
358: value="'.$ENV{'form.username'}.'" /> <br />';
359: }
360: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
361: push (@Apache::inputtags::status,$status);
362: my $expression='$external::datestatus="'.$status.'";';
363: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
364: &Apache::run::run($expression,$safeeval);
365: &Apache::lonxml::debug("Got $status");
366: if (( $status eq 'CLOSED' ) ||
367: ( $status eq 'UNCHECKEDOUT') ||
368: ( $status eq 'BANNED') ||
369: ( $status eq 'UNAVAILABLE')) {
370: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
371: if ( $target eq "web" ) {
372: $result.= $head_tag_start.'</head>';
373: my $msg=$body_tag_start;
374: if ($status eq 'UNAVAILABLE') {
375: $result.='<h1>Unable to determine if this resource is open due to network problems. Please try again later.</h1>';
376: } else {
377: $result.='<h1>Not open to be viewed</h1>';
378: }
379: if ($status eq 'CLOSED') {
380: $msg.='The problem '.$accessmsg;
381: } elsif ($status eq 'UNCHECKEDOUT') {
382: $msg.=&checkout_msg;
383: }
384: $result.=$msg.'<br />';
385: } elsif ($target eq 'tex') {
386: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
387: if ($status eq 'UNAVAILABLE') {
388: $result.='Unable to determine if this resource is open due to network problems. Please try again later.\vskip 0 mm ';
389: } else {
390: $result.="Problem is not open to be viewed. It $accessmsg \\vskip 0 mm ";
391: }
392: }
393: } elsif ($target eq 'web') {
394: my $name= &get_resource_name($parstack,$safeeval);
395: if ($status eq 'CAN_ANSWER') {
396: # create a page header and exit
397: $result.="$head_tag_start<title>$name</title></head>
398: $body_tag_start \n $form_tag_start".
399: '<input type="hidden" name="submitted" value="yes" />';
400: if ($ENV{'request.state'} eq "construct") {
401: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
402: }
403: # if we are viewing someone else preserve that info
404: if (defined $ENV{'form.grade_symb'}) {
405: foreach my $field ('symb','courseid','domain','username') {
406: $result .= '<input type="hidden" name="grade_'.$field.
407: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
408: }
409: }
410: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
411: || $status eq 'CLOSED' || $status eq 'UNAVALAILABLE') {
412: $result.=$head_tag_start.
413: "<title>$name</title></head>\n$body_tag_start\n";
414: }
415: } elsif ($target eq 'tex') {
416: my $startminipage = '';
417: if (not $ENV{'form.problem_split'}=~/yes/) {
418: $startminipage = '\begin{minipage}{\textwidth}';
419: }
420: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
421: if ($name eq '') {
422: $name=&Apache::lonnet::EXT('resource.title');
423: if ($name eq 'con_lost') { $name = ''; }
424: }
425: $Apache::lonhomework::name=$name;
426: my $id = $Apache::inputtags::part;
427: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
428: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'keys');
429: my @allkeys = split /,/,$allkeys;
430: my $allow_print_points = 0;
431: foreach my $partial_key (@allkeys) {
432: if ($partial_key=~m/weight/) {
433: $allow_print_points++;
434: }
435: }
436: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
437: $duedate = POSIX::strftime("%c",localtime($duedate));
438: my $temp_file;
439: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
440: if (-e $filename) {
441: $temp_file = Apache::File->new($filename);
442: } else {
443: $temp_file = Apache::File->new('>>'.$filename);
444: }
445: my @due_file_content = <$temp_file>;
446: my $due_file_content = $due_file_content[$#due_file_content];
447: chomp $due_file_content;
448: my $name_of_resourse= &get_resource_name($parstack,$safeeval);
449: if ($due_file_content ne $duedate) {
450: $temp_file = Apache::File->new('>'.$filename);
451: print $temp_file "$duedate\n";
452: if (not $ENV{'request.symb'} =~ m/\.page_/) {
453: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
454: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent '.$startminipage;
455: } else {
456: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent'.$startminipage;
457: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
458: }
459: } else {
460: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
461: }
462: } else {
463: if (not $ENV{'request.symb'} =~ m/\.page_/) {
464: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent'.$startminipage;
465: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
466: } else {
467: $result .= '\vskip 1mm \\\\\\\\';
468: }
469: }
470: }
471: } elsif ($target eq 'edit') {
472: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
473: &problem_edit_header();
474: my $temp=&Apache::edit::insertlist($target,$token);
475: $result.=$temp;
476: } elsif ($target eq 'modified') {
477: $result=$token->[4];
478: $result.=&Apache::edit::handle_insert();
479: } else {
480: # page_start returned a starting result, delete it if we don't need it
481: $result = '';
482: }
483: return $result;
484: }
485:
486: sub end_problem {
487: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
488: my $result='';
489: my $status=$Apache::inputtags::status['-1'];
490: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
491: $target eq 'tex') {
492: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
493: $status eq 'CAN_ANSWER' ) {
494: # if part is zero, no <part>s existed, so we need to the grading
495: &Apache::inputtags::grade;
496: } elsif ( ($target eq 'web' || $target eq 'tex') &&
497: $Apache::inputtags::part eq '0' &&
498: $status ne 'UNCHECKEDOUT') {
499: # if part is zero, no <part>s existed, so we need show the current
500: # grading status
501: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
502: $result.= $gradestatus;
503: }
504: if (
505: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
506: ($target eq 'answer') || ($target eq 'tex')
507: ) {
508: if ($status eq 'CAN_ANSWER') {
509: if ($target ne 'tex' &&
510: $ENV{'form.answer_output_mode'} ne 'tex') {
511: $result.="</form></body>\n";
512: }
513: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
514: $status eq 'UNCHECKEDOUT' ) {
515: if ($target ne 'tex' &&
516: $ENV{'form.answer_output_mode'} ne 'tex') {
517: $result.="</body>\n";
518: }
519: }
520: if ($target eq 'web') {
521: $result.=&Apache::lonxml::xmlend();
522: } elsif ($target eq 'tex') {
523: my $endminipage = '';
524: if (not $ENV{'form.problem_split'}=~/yes/) {
525: $endminipage = '\end{minipage}';
526: }
527: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
528: if (not $ENV{'request.symb'} =~ m/\.page_/) {
529: $result .= $endminipage.'\end{document} ';
530: } else {
531: $result .= '';
532: }
533: }
534: }
535: if ($target eq 'grade') {
536: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
537: &finalize_storage();
538: }
539: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
540: && $ENV{'form.answer_output_mode'} ne 'tex') {
541: $result.='</html>'; # normally we get it from xmlend, but in CSTR
542: # we always show answer mode too.
543: }
544: } elsif ($target eq 'meta') {
545: if ($Apache::inputtags::part eq '0') {
546: @Apache::inputtags::response=();
547: $result=&Apache::response::mandatory_part_meta;
548: }
549: } elsif ($target eq 'edit') {
550: &Apache::lonxml::debug("in end_problem with $target, edit");
551: $result = &problem_edit_footer();
552: }
553:
554: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
555: &Apache::inputtags::check_for_duplicate_ids();
556: }
557: undef(%Apache::lonhomework::history);
558: undef(%Apache::lonhomework::results);
559: undef($Apache::inputtags::part);
560: undef($Apache::lonhomework::parsing_a_problem);
561:
562: return $result;
563: }
564:
565:
566: sub start_library {
567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
568: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
569:
570: if ($target eq 'edit') {
571: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
572: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
573: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
574: &problem_edit_header();
575: my $temp=&Apache::edit::insertlist($target,$token);
576: $result.=$temp;
577: } elsif ($target eq 'modified') {
578: $result=$token->[4];
579: $result.=&Apache::edit::handle_insert();
580: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
581: $ENV{'request.state'} eq "construct" ) {
582: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
583: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
584: my $name=&get_resource_name($parstack,$safeeval);
585: my $rndseed=&setup_rndseed($safeeval);
586: $result.="$head_tag_start<title>$name</title></head>
587: $body_tag_start \n $form_tag_start".
588: '<input type="hidden" name="submitted" value="yes" />';
589: $result.=&problem_web_to_edit_header($rndseed);
590: }
591: return $result;
592: }
593:
594: sub end_library {
595: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
596: my $result='';
597: if ($target eq 'edit') {
598: $result=&problem_edit_footer();
599: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
600: $ENV{'request.state'} eq "construct") {
601: $result.='</form></body>'.&Apache::lonxml::xmlend();
602: }
603: return $result;
604: }
605:
606: sub start_definetag {
607: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
608:
609: my $result;
610:
611: my $name = $token->[2]->{'name'};
612: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
613: if ($name=~/^\//) {
614: $result=
615: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
616: } else {
617: $result=
618: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
619: }
620: $skip=~s/\</\<\;/gs;
621: $skip=~s/\>/\>\;/gs;
622: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
623: return $result;
624: }
625:
626: sub end_definetag {
627: return '';
628: }
629:
630: sub start_block {
631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
632:
633: my $result;
634:
635: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
636: $target eq 'tex' || $target eq 'analyze') {
637: my $code = $token->[2]->{'condition'};
638: if ($code) {
639: if (!$Apache::lonxml::default_homework_loaded) {
640: &Apache::lonxml::default_homework_load($safeeval);
641: }
642: $result = &Apache::run::run($code,$safeeval);
643: &Apache::lonxml::debug("block :$code: returned :$result:");
644: } else {
645: $result='1';
646: }
647: if ( ! $result ) {
648: my $skip=&Apache::lonxml::get_all_text("/block",$parser);
649: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
650: }
651: $result='';
652: } elsif ($target eq 'edit') {
653: $result .=&Apache::edit::tag_start($target,$token);
654: $result .=&Apache::edit::text_arg('Test Condition:','condition',
655: $token,40);
656: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
657: } elsif ($target eq 'modified') {
658: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
659: $safeeval,'condition');
660: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
661: }
662: return $result;
663: }
664:
665: sub end_block {
666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
667: my $result;
668: if ($target eq "edit") {
669: $result.= &Apache::edit::tag_end($target,$token,'');
670: }
671: return $result;
672: }
673:
674: sub start_languageblock {
675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
676:
677: my $result;
678:
679: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
680: $target eq 'tex' || $target eq 'analyze') {
681: &Apache::lonxml::startredirection();
682: } elsif ($target eq 'edit') {
683: $result .=&Apache::edit::tag_start($target,$token);
684: $result .=&Apache::edit::text_arg('Include Language:','include',
685: $token,40);
686: $result .=&Apache::edit::text_arg('Exclude Language:','exclude',
687: $token,40);
688: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
689: } elsif ($target eq 'modified') {
690: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
691: $safeeval,'include',
692: 'exclude');
693: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
694: }
695: return $result;
696: }
697:
698: sub end_languageblock {
699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
700: my $result;
701:
702: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
703: $target eq 'tex' || $target eq 'analyze') {
704: my $text=&Apache::lonxml::endredirection();
705: my $include= &Apache::lonxml::get_param('include',$parstack,$safeeval);
706: my $exclude= &Apache::lonxml::get_param('exclude',$parstack,$safeeval);
707: my %languages=&Apache::loncommon::display_languages();
708: $result='1';
709: if ($include) {
710: $result='';
711: foreach (split(/\,/,$include)) {
712: if ($languages{$_}) { $result='1'; }
713: }
714: }
715: if ($exclude) {
716: foreach (split(/\,/,$exclude)) {
717: if ($languages{$_}) { $result='0'; }
718: }
719: }
720: if ( ! $result ) {
721: $result='';
722: } else {
723: $result=$text;
724: }
725: } elsif ($target eq "edit") {
726: $result.= &Apache::edit::tag_end($target,$token,'');
727: }
728: return $result;
729: }
730:
731: sub start_instructorcomment {
732: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
733:
734: my $result;
735:
736: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
737: $target eq 'tex' || $target eq 'analyze') {
738: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
739: if ( ! $result ) {
740: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",$parser);
741: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
742: }
743: $result='';
744: } elsif ($target eq 'edit') {
745: $result .=&Apache::edit::tag_start($target,$token);
746: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
747: }
748: return $result;
749: }
750:
751: sub end_instructorcomment {
752: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
753: my $result;
754: if ($target eq "edit") {
755: $result.= &Apache::edit::tag_end($target,$token,'');
756: }
757: return $result;
758: }
759:
760: sub start_while {
761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
762:
763: my $result;
764: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
765: $target eq 'tex' || $target eq 'analyze') {
766: my $code = $token->[2]->{'condition'};
767:
768: push( @Apache::structuretags::whileconds, $code);
769: if (!$Apache::lonxml::default_homework_loaded) {
770: &Apache::lonxml::default_homework_load($safeeval);
771: }
772: my $result = &Apache::run::run($code,$safeeval);
773: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
774: push( @Apache::structuretags::whilebody, $bodytext);
775: push( @Apache::structuretags::whileline, $token->[5]);
776: &Apache::lonxml::debug("s code $code got -$result-");
777: if ( $result ) {
778: &Apache::lonxml::newparser($parser,\$bodytext);
779: }
780: } elsif ($target eq 'edit') {
781: $result .=&Apache::edit::tag_start($target,$token);
782: $result .=&Apache::edit::text_arg('Test Condition:','condition',
783: $token,40);
784: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
785: } elsif ($target eq 'modified') {
786: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
787: $safeeval,'condition');
788: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
789: }
790: return $result;
791: }
792:
793: sub end_while {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
795: my $result;
796:
797: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
798: $target eq 'tex' || $target eq 'analyze') {
799: my $code = pop(@Apache::structuretags::whileconds);
800: my $bodytext = pop(@Apache::structuretags::whilebody);
801: my $line = pop(@Apache::structuretags::whileline);
802: my $return = &Apache::run::run($code,$safeeval);
803: my $starttime=time;
804: my $error=0;
805: while ($return) {
806: if (time-$starttime >
807: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
808: $return = 0; $error=1; next;
809: }
810: $result.=&Apache::scripttag::xmlparse($bodytext);
811: $return = &Apache::run::run($code,$safeeval);
812: }
813: if ($error) {
814: &Apache::lonxml::error('<pre>Code ran too long. It ran for more than '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' seconds occured while running <while$gt; on line '.$line.'</pre>');
815: }
816: } elsif ($target eq "edit") {
817: $result.= &Apache::edit::tag_end($target,$token,'');
818: }
819: return $result;
820: }
821:
822: # <randomlist show="1">
823: # <tag1>..</tag1>
824: # <tag2>..</tag2>
825: # <tag3>..</tag3>
826: # ...
827: # </randomlist>
828: sub start_randomlist {
829: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
830: my $result;
831: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
832: $target eq 'tex' || $target eq 'analyze') {
833: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
834: my $b_parser= HTML::TokeParser->new(\$body);
835: my $b_tok;
836: my @randomlist;
837: my $list_item;
838: while($b_tok = $b_parser->get_token() ) {
839: if($b_tok->[0] eq 'S') { # start tag
840: # get content of the tag until matching end tag
841: # get all text upto the matching tag
842: # and push the content into @randomlist
843: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
844: $b_parser);
845: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
846: push(@randomlist,$list_item);
847: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
848: # $list_item</b>";
849: }
850: if($b_tok->[0] eq 'T') { # text
851: # what to do with text in between tags?
852: # print "<b>TEXT $b_tok->[1]</b><br />";
853: }
854: # if($b_tok->[0] eq 'E') { # end tag, should not happen
855: # print "<b>END-TAG $b_tok->[1]</b><br />";
856: # }
857: }
858: my @idx_arr = (0 .. $#randomlist);
859: &Apache::structuretags::shuffle(\@idx_arr);
860: my $bodytext = '';
861: my $show=$#randomlist;
862: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
863: $showarg--;
864: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
865: for(0 .. $show) {
866: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
867: }
868: &Apache::lonxml::newparser($parser,\$bodytext);
869: } elsif ($target eq 'edit' ) {
870: $result .=&Apache::edit::tag_start($target,$token);
871: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
872: $token,5);
873: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
874: } elsif ($target eq 'modified' ) {
875: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
876: $safeeval,'show');
877: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
878: }
879: return $result;
880: }
881:
882: sub shuffle {
883: my $a=shift;
884: my $i;
885: if (defined(@$a)) {
886: &Apache::response::setrandomnumber();
887: for($i=@$a;--$i;) {
888: my $j=int(&Math::Random::random_uniform() * ($i+1));
889: next if $i == $j;
890: @$a[$i,$j] = @$a[$j,$i];
891: }
892: }
893: }
894:
895: sub end_randomlist {
896: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
897: my $result;
898: if ($target eq 'edit' ) {
899: $result=&Apache::edit::tag_end($target,$token,
900: 'End Randomly Parsed Block');
901: }
902: return $result;
903: }
904:
905: sub start_part {
906: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
907: my $result='';
908: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
909: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
910: $Apache::inputtags::part=$id;
911: push(@Apache::inputtags::partlist,$id);
912: @Apache::inputtags::response=();
913: @Apache::inputtags::previous=();
914: @Apache::inputtags::previous_version=();
915: $Apache::lonhomework::problemstatus=
916: &Apache::lonnet::EXT("resource.$id.problemstatus");
917: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
918:
919: if ($target eq 'meta') {
920: return &Apache::response::mandatory_part_meta;
921: } elsif ($target eq 'web' || $target eq 'grade' ||
922: $target eq 'answer' || $target eq 'tex') {
923: if ($hidden) {
924: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
925: } else {
926: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
927: push (@Apache::inputtags::status,$status);
928: my $expression='$external::datestatus="'.$status.'";';
929: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
930: &Apache::run::run($expression,$safeeval);
931: if ( $status eq 'CLOSED' ) {
932: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
933: if ( $target eq "web" ) {
934: $result="<br />Part is not open to be viewed. It $accessmsg<br />";
935: } elsif ( $target eq 'tex' ) {
936: if (not $ENV{'form.problem_split'}=~/yes/) {
937: $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";
938: } else {
939: $result="\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\";
940: }
941: }
942: } else {
943: if ($target eq 'tex') {
944: if (not $ENV{'form.problem_split'}=~/yes/) {
945: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
946: }
947: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
948: if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
949: }
950: }
951: }
952: } elsif ($target eq 'edit') {
953: $result.=&Apache::edit::tag_start($target,$token);
954: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
955: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
956: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
957: } elsif ($target eq 'modified') {
958: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
959: $safeeval,'id');
960: if ($constructtag) {
961: $result = &Apache::edit::rebuild_tag($token);
962: $result.=&Apache::edit::handle_insert();
963: }
964: }
965: return $result;
966: }
967:
968: sub end_part {
969: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
970: &Apache::lonxml::debug("in end_part $target ");
971: my $status=$Apache::inputtags::status['-1'];
972: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
973: my $result='';
974: if ( $target eq 'meta' ) {
975: $result='';
976: } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {
977: $result=&Apache::inputtags::grade;
978: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
979: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
980: $target);
981: if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}
982: $result=$gradestatus;
983: } elsif ($target eq 'edit') {
984: $result=&Apache::edit::end_table();
985: }
986: pop @Apache::inputtags::status;
987: $Apache::inputtags::part='';
988: return $result;
989: }
990:
991: sub start_preduedate {
992: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
993: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
994: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
995: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
996: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
997: &Apache::lonxml::get_all_text("/preduedate",$parser);
998: }
999: }
1000: return '';
1001: }
1002:
1003: sub end_preduedate {
1004: return '';
1005: }
1006:
1007: sub start_postanswerdate {
1008: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1009: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
1010: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1011: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1012: }
1013: } elsif ($target eq 'tex') {
1014: return '\vskip 0 mm \noindent';
1015: }
1016: return '';
1017: }
1018:
1019: sub end_postanswerdate {
1020: return '';
1021: }
1022:
1023: sub start_notsolved {
1024: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1025: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1026: $target eq 'tex') {
1027: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1028: &Apache::lonxml::debug("not solved has :$gradestatus:");
1029: if ($gradestatus =~ /^correct/) {
1030: &Apache::lonxml::debug("skipping");
1031: &Apache::lonxml::get_all_text("/notsolved",$parser);
1032: }
1033: }
1034: return '';
1035: }
1036:
1037: sub end_notsolved {
1038: return '';
1039: }
1040:
1041: sub start_solved {
1042: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1043: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1044: $target eq 'tex') {
1045: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1046: if ($gradestatus !~ /^correct/) {
1047: &Apache::lonxml::get_all_text("/solved",$parser);
1048: }
1049: }
1050: return '';
1051: }
1052:
1053: sub end_solved {
1054: return '';
1055: }
1056:
1057: sub start_startouttext {
1058: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1059: my @result=(''.'');
1060: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1061: return (@result);
1062: }
1063:
1064: sub end_startouttext {
1065: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1066: my $result='';
1067: my $text='';
1068:
1069: if ($target eq 'edit') {
1070: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1071: $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
1072: <td>Delete:".
1073: &Apache::edit::deletelist($target,$token)
1074: ."</td>
1075: <td>".
1076: &Apache::edit::insertlist($target,$token).
1077: &Apache::edit::end_row().
1078: &Apache::edit::start_spanning_row()."\n"
1079: . &Apache::loncommon::helpLatexCheatsheet () .
1080: &Apache::edit::editfield($token->[1],$text,"",80,4);
1081: }
1082: if ($target eq 'modified') {
1083: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1084: $result='<startouttext />'.&Apache::edit::modifiedfield();
1085: }
1086: if ($target eq 'tex') {
1087: $result .= '\noindent ';
1088: }
1089: return $result;
1090: }
1091:
1092: sub start_endouttext {
1093: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1094: my $result='';
1095: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1096: if ($target eq "modified") {
1097: $result='<endouttext />'.
1098: &Apache::edit::handle_insertafter('startouttext'); }
1099: return $result;
1100: }
1101:
1102: sub end_endouttext {
1103: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1104: my @result=('','');
1105: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1106: return (@result);
1107: }
1108:
1109: sub delete_startouttext {
1110: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1111: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1112: my $text=$$parser['-1']->get_text("/endouttext");
1113: my $ntoken=$$parser['-1']->get_token();
1114: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1115: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1116: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1117: # they did the last time round
1118: &Apache::lonxml::increasedepth($ntoken);
1119: &Apache::lonxml::decreasedepth($ntoken);
1120: return 1;
1121: }
1122:
1123: sub start_simpleeditbutton {
1124: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1125: my $result='';
1126: if (($target eq 'web') &&
1127: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1128: my $url=$ENV{'REQUEST_URI'};
1129: $url=~s/\?.*$//;
1130: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1131: '<a href="'.$url.'/smpedit">Simple Problem Editor</a> - Note: it can take up to 10 minutes for changes to take effect for all users.'.
1132: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1133: }
1134: return $result;
1135: }
1136:
1137: sub end_simpleeditbutton {
1138: return '';
1139: }
1140:
1141: 1;
1142: __END__
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