1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
3: #
4: # $Id: structuretags.pm,v 1.210 2003/09/19 20:29:29 albertel 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: use Apache::lonlocal;
40:
41: BEGIN {
42: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext',
43: 'simpleeditbutton','definetag'));
44: }
45:
46: sub start_web {
47: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
48: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
49: if ($target eq 'web') {
50: return $bodytext;
51: }
52: return '';
53: }
54:
55: sub end_web {
56: return '';
57: }
58:
59: sub start_tex {
60: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
61: my $result='';
62: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
63: if ($target eq 'tex') {
64: return $bodytext.' ';
65: }
66: return $result;;
67: }
68:
69: sub end_tex {
70: return '';
71: }
72:
73: sub page_start {
74: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
75: my %found;
76: foreach my $taginside (@$tagstack) {
77: foreach my $taglookedfor ('html','body','form') {
78: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
79: }
80: }
81:
82: my $result;
83: my $head_tag_start;
84: if (!defined($found{'html'})) {
85: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
86: $parstack,$parser,$safeeval);
87: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
88: }
89: my $body_tag_start;
90: if (!defined($found{'body'})) {
91: $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
92: 'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
93: my $background=&Apache::lonxml::get_param('background',$parstack,
94: $safeeval);
95: if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
96: if ($background) {
97: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
98: $background;
99: $body_tag_start.='background="'.$background.'" ';
100: } else {
101: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
102: $safeeval);
103: if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
104: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
105: } else {
106: $body_tag_start.='bgcolor="#ffffff"';
107: }
108: }
109: if ($ENV{'browser.fontenhance'} eq 'on') {
110: $body_tag_start.=' style="font-size: x-large;" ';
111: }
112: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
113: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
114: my ($symb,undef,undef,undef,$publicuser)=
115: &Apache::lonxml::whichuser();
116: if ($symb eq '' && !$publicuser) {
117: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
118: $help="Browsing resource, all submissions are temporary.<br />";
119: $body_tag_start.=$help;
120: }
121: }
122: }
123: my $form_tag_start;
124: if (!defined($found{'form'})) {
125: $form_tag_start='<form name="lonhomework" method="POST" action="'.
126: $ENV{'request.uri'}.'">';
127: }
128: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
129: }
130:
131: #use Time::HiRes();
132: sub get_resource_name {
133: my ($parstack,$safeeval)=@_;
134: if (defined($Apache::lonhomework::name)) {
135: return $Apache::lonhomework::name;
136: }
137: my $name=&Apache::lonnet::gettitle();
138: if ($name eq '') {
139: $name=&Apache::lonnet::EXT('resource.title');
140: if ($name eq 'con_lost') { $name = ''; }
141: }
142: if ($name!~/\S+/) {
143: $name=$ENV{'request.uri'};
144: $name=~s-.*/([^/]+)$-$1-;
145: }
146: $Apache::lonhomework::name=$name;
147: return $name;
148: }
149:
150: sub setup_rndseed {
151: my ($safeeval)=@_;
152: my $rndseed;
153: my ($symb)=&Apache::lonxml::whichuser();
154: if ($ENV{'request.state'} eq "construct" || $symb eq '') {
155: $rndseed=$ENV{'form.rndseed'};
156: if (!$rndseed) {
157: $rndseed=$Apache::lonhomework::history{'rndseed'};
158: if (!$rndseed) {
159: $rndseed=time;
160: $ENV{'form.rndseed'}=$rndseed;
161: }
162: }
163: if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
164: $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
165: srand(time);
166: $rndseed=int(rand(2100000000));
167: $ENV{'form.rndseed'}=$rndseed;
168: delete($ENV{'form.resetdata'});
169: delete($ENV{'form.newrandomization'});
170: }
171: if (defined($rndseed) && $rndseed ne int($rndseed)) {
172: $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
173: }
174: &Apache::lonxml::debug("Setting rndseed to $rndseed");
175: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
176: }
177: return $rndseed;
178: }
179:
180: sub problem_edit_header {
181: return '<input type="hidden" name="submitted" value="edit" />
182: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
183: <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />
184: <input type="submit" name="problemmode" value="'.&mt('EditXML').'" />
185: <input type="submit" name="Undo" value="'.&mt('undo').'" /> <hr />
186: <input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
187: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" /><br /><p> </p><table border="0"><tr><td bgcolor="#DDDDDD">
188: ';
189: }
190:
191: sub problem_edit_footer {
192: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
193: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />';
194: }
195:
196: sub problem_web_to_edit_header {
197: my ($rndseed)=@_;
198: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
199: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
200: <input type="submit" name="problemmode" value="'.&mt('EditXML').'" />
201: <input type="submit" name="newrandomization" value="'.&mt('New Randomization').'" />
202: <input type="submit" name="resetdata" value="'.&mt('Reset Submissions').'" />
203: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
204: <input type="text" name="rndseed" width="10" value="'.
205: $rndseed.'"
206: onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
207: <input type="checkbox" name="showallfoils" ';
208: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
209: $result.= ' />'.&mt(' Show All Foils').'
210: <hr />';
211: my $numtoanalyze=$ENV{'form.numtoanalyze'};
212: if (!$numtoanalyze) { $numtoanalyze=20; }
213: $result.= '<input type="submit" name="problemmode" value='.
214: &mt('"Calculate answers').'" /> for
215: <input type="text" name="numtoanalyze" value="'.
216: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
217: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
218: '',undef,undef,300).
219: '<hr />';
220: return $result;
221: }
222:
223: sub initialize_storage {
224: %Apache::lonhomework::results=();
225: %Apache::lonhomework::history=();
226: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
227: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
228: %Apache::lonhomework::history=
229: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
230: my ($temp)=keys %Apache::lonhomework::history ;
231: &Apache::lonxml::debug("Return message of $temp");
232: } else {
233: %Apache::lonhomework::history=
234: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
235: }
236: #ignore error conditions
237: my ($temp)=keys %Apache::lonhomework::history ;
238: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
239: }
240:
241: # -------------------------------------------------------------finalize_storage
242: # Stores away the result has to a student's environment
243: # checks form.grade_ for specific values, other wises stores
244: # to the running users environment
245: sub finalize_storage {
246: my $result;
247: my ($temp) = keys %Apache::lonhomework::results;
248: if ( $temp ne '' ) {
249: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
250: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
251: $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};
252: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
253: $ENV{'request.uri'},'',$domain,$name);
254: &Apache::lonxml::debug('Construct Store return message:'.$result);
255: } else {
256: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
257: $symb,$courseid,$domain,$name);
258: &Apache::lonxml::debug('Store return message:'.$result);
259: }
260: }
261: return $result;
262: }
263:
264: sub checkout_msg {
265: return (<<ENDCHECKOUT);
266: <h2>The resource needs to be checked out</h2>
267: As a resource gets checked out, a unique timestamped ID is given to it, and a
268: permanent record is left in the system.<p />
269: <font color=red>
270: Checking out resources is subject to course policies, and may exclude future
271: credit even if done erroneously.<p />
272: </font>
273: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
274: <input type="hidden" name="doescheckout" value="yes" />
275: <input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />
276: </form>
277: ENDCHECKOUT
278: }
279:
280: sub init_problem_globals {
281: my ($type)=@_;
282: #initialize globals
283: if ($type eq 'problem') {
284: $Apache::inputtags::part='0';
285: @Apache::inputtags::partlist=('0');
286: $Apache::lonhomework::problemstatus=
287: &Apache::lonnet::EXT('resource.0.problemstatus');
288: } else {
289: $Apache::inputtags::part='';
290: @Apache::inputtags::partlist=();
291: $Apache::lonhomework::problemstatus='';
292: }
293: @Apache::inputtags::responselist = ();
294: @Apache::inputtags::importlist = ();
295: @Apache::inputtags::previous=();
296: @Apache::inputtags::previous_version=();
297: $Apache::structuretags::printanswer='No';
298: @Apache::structuretags::whileconds=();
299: @Apache::structuretags::whilebody=();
300: @Apache::structuretags::whileline=();
301: $Apache::lonhomework::scantronmode=0;
302: undef($Apache::lonhomework::name);
303:
304: }
305:
306: sub reset_problem_globals {
307: my ($type)=@_;
308: undef(%Apache::lonhomework::history);
309: undef(%Apache::lonhomework::results);
310: undef($Apache::inputtags::part);
311: #don't undef this, lonhomework.pm takes care of this, we use this to
312: #detect if we try to do 2 problems in one file
313: # undef($Apache::lonhomework::parsing_a_problem);
314: undef($Apache::lonhomework::name);
315: }
316:
317: sub start_problem {
318: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
319:
320: if ( $Apache::inputtags::part ne '' ||
321: $Apache::lonhomework::parsing_a_problem) {
322: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
323: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
324: return '';
325: }
326:
327: $Apache::lonhomework::parsing_a_problem=1;
328: &init_problem_globals('problem');
329:
330: if (defined($ENV{'scantron.maxquest'})) {
331: $Apache::lonhomework::scantronmode=1;
332: }
333:
334: if ($target ne 'analyze') {
335: &initialize_storage();
336: if ($target eq 'web') {
337: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
338: }
339: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
340: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
341: }
342: if ($Apache::lonhomework::type eq '' ) {
343: my $uri=$ENV{'request.uri'};
344: if ($uri=~/\.(\w+)$/) {
345: $Apache::lonhomework::type=$1;
346: &Apache::lonxml::debug("Using type of $1");
347: } else {
348: $Apache::lonhomework::type='problem';
349: &Apache::lonxml::debug("Using default type, problem, :$uri:");
350: }
351: }
352:
353: #added vars to the scripting enviroment
354: my $expression='$external::part='.$Apache::inputtags::part.';';
355: &Apache::run::run($expression,$safeeval);
356: my $status;
357: my $accessmsg;
358:
359: #should get back a <html> or the neccesary stuff to start XML/MathML
360: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
361: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
362: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
363:
364: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
365: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
366: $target eq 'tex') {
367: #handle exam checkout
368: if ($Apache::lonhomework::type eq 'exam') {
369: my $token=
370: $Apache::lonhomework::history{"resource.0.outtoken"};
371: if (($ENV{'form.doescheckout'}) && (!$token)) {
372: $token=&Apache::lonxml::maketoken();
373: $Apache::lonhomework::history{"resource.0.outtoken"}=
374: $token;
375: }
376: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
377: }
378:
379: #handle rand seed in construction space
380: my $rndseed=&setup_rndseed($safeeval);
381: my ($symb)=&Apache::lonxml::whichuser();
382: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
383: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
384: $rndseed.'" />'.
385: '<input type="submit" name="resetdata"
386: value="New Problem Variation" />'.
387: '<input type="hidden" name="username"
388: value="'.$ENV{'form.username'}.'" /> <br />';
389: }
390: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
391: push (@Apache::inputtags::status,$status);
392: my $expression='$external::datestatus="'.$status.'";';
393: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
394: &Apache::run::run($expression,$safeeval);
395: &Apache::lonxml::debug("Got $status");
396: if (( $status eq 'CLOSED' ) ||
397: ( $status eq 'UNCHECKEDOUT') ||
398: ( $status eq 'BANNED') ||
399: ( $status eq 'UNAVAILABLE')) {
400: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
401: if ( $target eq "web" ) {
402: $result.= $head_tag_start.'</head>';
403: my $msg=$body_tag_start;
404: if ($status eq 'UNAVAILABLE') {
405: $result.='<h1>Unable to determine if this resource is open due to network problems. Please try again later.</h1>';
406: } else {
407: $result.='<h1>Not open to be viewed</h1>';
408: }
409: if ($status eq 'CLOSED') {
410: $msg.='The problem '.$accessmsg;
411: } elsif ($status eq 'UNCHECKEDOUT') {
412: $msg.=&checkout_msg;
413: }
414: $result.=$msg.'<br />';
415: } elsif ($target eq 'tex') {
416: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
417: if ($status eq 'UNAVAILABLE') {
418: $result.='Unable to determine if this resource is open due to network problems. Please try again later.\vskip 0 mm ';
419: } else {
420: $result.="Problem is not open to be viewed. It $accessmsg \\vskip 0 mm ";
421: }
422: }
423: } elsif ($target eq 'web') {
424: my $name= &get_resource_name($parstack,$safeeval);
425: if ($status eq 'CAN_ANSWER') {
426: # create a page header and exit
427: $result.="$head_tag_start<title>$name</title></head>
428: $body_tag_start \n $form_tag_start".
429: '<input type="hidden" name="submitted" value="yes" />';
430: if ($ENV{'request.state'} eq "construct") {
431: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
432: }
433: # if we are viewing someone else preserve that info
434: if (defined $ENV{'form.grade_symb'}) {
435: foreach my $field ('symb','courseid','domain','username') {
436: $result .= '<input type="hidden" name="grade_'.$field.
437: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
438: }
439: }
440: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
441: || $status eq 'CLOSED' || $status eq 'UNAVALAILABLE') {
442: $result.=$head_tag_start.
443: "<title>$name</title></head>\n$body_tag_start\n";
444: }
445: } elsif ($target eq 'tex') {
446: my $startminipage = '';
447: if (not $ENV{'form.problem_split'}=~/yes/) {
448: $startminipage = '\begin{minipage}{\textwidth}';
449: }
450: my $id = $Apache::inputtags::part;
451: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
452: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'keys');
453: my @allkeys = split /,/,$allkeys;
454: my $allow_print_points = 0;
455: foreach my $partial_key (@allkeys) {
456: if ($partial_key=~m/weight/) {
457: $allow_print_points++;
458: }
459: }
460: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
461: $duedate = POSIX::strftime("%c",localtime($duedate));
462: my $temp_file;
463: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
464: if (-e $filename) {
465: $temp_file = Apache::File->new($filename);
466: } else {
467: $temp_file = Apache::File->new('>>'.$filename);
468: }
469: my @due_file_content = <$temp_file>;
470: my $due_file_content = $due_file_content[$#due_file_content];
471: chomp $due_file_content;
472: my $name_of_resourse= &get_resource_name($parstack,$safeeval);
473: if ($due_file_content ne $duedate) {
474: $temp_file = Apache::File->new('>'.$filename);
475: print $temp_file "$duedate\n";
476: if (not $ENV{'request.symb'} =~ m/\.page_/) {
477: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
478: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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 '.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
479: } else {
480: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
481: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
482: }
483: } else {
484: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
485: }
486: } else {
487: if (not $ENV{'request.symb'} =~ m/\.page_/) {
488: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
489: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
490: } else {
491: $result .= '\vskip 1mm \\\\\\\\';
492: }
493: }
494: }
495: } elsif ($target eq 'edit') {
496: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
497: &problem_edit_header();
498: my $temp=&Apache::edit::insertlist($target,$token);
499: $result.=$temp;
500: } elsif ($target eq 'modified') {
501: $result=$token->[4];
502: $result.=&Apache::edit::handle_insert();
503: } else {
504: # page_start returned a starting result, delete it if we don't need it
505: $result = '';
506: }
507: return $result;
508: }
509:
510: sub end_problem {
511: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
512: my $result='';
513: my $status=$Apache::inputtags::status['-1'];
514: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
515: $target eq 'tex') {
516: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
517: $status eq 'CAN_ANSWER' ) {
518: # if part is zero, no <part>s existed, so we need to the grading
519: &Apache::inputtags::grade;
520: } elsif ( ($target eq 'web' || $target eq 'tex') &&
521: $Apache::inputtags::part eq '0' &&
522: $status ne 'UNCHECKEDOUT') {
523: # if part is zero, no <part>s existed, so we need show the current
524: # grading status
525: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
526: $result.= $gradestatus;
527: }
528: if (
529: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
530: ($target eq 'answer') || ($target eq 'tex')
531: ) {
532: if ($status eq 'CAN_ANSWER') {
533: if ($target ne 'tex' &&
534: $ENV{'form.answer_output_mode'} ne 'tex') {
535: $result.="</form></body>\n";
536: }
537: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
538: $status eq 'UNCHECKEDOUT' ) {
539: if ($target ne 'tex' &&
540: $ENV{'form.answer_output_mode'} ne 'tex') {
541: $result.="</body>\n";
542: }
543: }
544: if ($target eq 'web') {
545: $result.=&Apache::lonxml::xmlend();
546: } elsif ($target eq 'tex') {
547: my $endminipage = '';
548: if (not $ENV{'form.problem_split'}=~/yes/) {
549: $endminipage = '\end{minipage}';
550: }
551: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
552: if (not $ENV{'request.symb'} =~ m/\.page_/) {
553: $result .= $endminipage.'\end{document} ';
554: } else {
555: $result .= '';
556: }
557: }
558: }
559: if ($target eq 'grade') {
560: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
561: &finalize_storage();
562: }
563: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
564: && $ENV{'form.answer_output_mode'} ne 'tex') {
565: $result.='</html>'; # normally we get it from xmlend, but in CSTR
566: # we always show answer mode too.
567: }
568: } elsif ($target eq 'meta') {
569: if ($Apache::inputtags::part eq '0') {
570: @Apache::inputtags::response=();
571: $result=&Apache::response::mandatory_part_meta;
572: }
573: } elsif ($target eq 'edit') {
574: &Apache::lonxml::debug("in end_problem with $target, edit");
575: $result = &problem_edit_footer();
576: }
577:
578: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
579: &Apache::inputtags::check_for_duplicate_ids();
580: }
581:
582: &reset_problem_globals('problem');
583:
584: return $result;
585: }
586:
587:
588: sub start_library {
589: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
590: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
591: if ($$tagstack[0] eq 'library') { &init_problem_globals('library') };
592: if ($target eq 'edit') {
593: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
594: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
595: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
596: &problem_edit_header();
597: my $temp=&Apache::edit::insertlist($target,$token);
598: $result.=$temp;
599: } elsif ($target eq 'modified') {
600: $result=$token->[4];
601: $result.=&Apache::edit::handle_insert();
602: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
603: $ENV{'request.state'} eq "construct" ) {
604: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
605: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
606: my $name=&get_resource_name($parstack,$safeeval);
607: my $rndseed=&setup_rndseed($safeeval);
608: $result.="$head_tag_start<title>$name</title></head>
609: $body_tag_start \n $form_tag_start".
610: '<input type="hidden" name="submitted" value="yes" />';
611: $result.=&problem_web_to_edit_header($rndseed);
612: }
613: return $result;
614: }
615:
616: sub end_library {
617: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
618: my $result='';
619: if ($target eq 'edit') {
620: $result=&problem_edit_footer();
621: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
622: $ENV{'request.state'} eq "construct") {
623: $result.='</form></body>'.&Apache::lonxml::xmlend();
624: }
625: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
626: return $result;
627: }
628:
629: sub start_definetag {
630: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
631:
632: my $result;
633:
634: my $name = $token->[2]->{'name'};
635: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
636: if ($name=~/^\//) {
637: $result=
638: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
639: } else {
640: $result=
641: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
642: }
643: $skip=~s/\</\<\;/gs;
644: $skip=~s/\>/\>\;/gs;
645: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
646: return $result;
647: }
648:
649: sub end_definetag {
650: return '';
651: }
652:
653: sub start_block {
654: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
655:
656: my $result;
657:
658: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
659: $target eq 'tex' || $target eq 'analyze') {
660: my $code = $token->[2]->{'condition'};
661: if (defined($code)) {
662: if (!$Apache::lonxml::default_homework_loaded) {
663: &Apache::lonxml::default_homework_load($safeeval);
664: }
665: $result = &Apache::run::run($code,$safeeval);
666: &Apache::lonxml::debug("block :$code: returned :$result:");
667: } else {
668: $result='1';
669: }
670: if ( ! $result ) {
671: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
672: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
673: }
674: $result='';
675: } elsif ($target eq 'edit') {
676: $result .=&Apache::edit::tag_start($target,$token);
677: $result .=&Apache::edit::text_arg('Test Condition:','condition',
678: $token,40);
679: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
680: } elsif ($target eq 'modified') {
681: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
682: $safeeval,'condition');
683: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
684: }
685: return $result;
686: }
687:
688: sub end_block {
689: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
690: my $result;
691: if ($target eq "edit") {
692: $result.= &Apache::edit::tag_end($target,$token,'');
693: }
694: return $result;
695: }
696:
697: sub start_languageblock {
698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
699:
700: my $result;
701:
702: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
703: $target eq 'tex' || $target eq 'analyze') {
704: my $include = $token->[2]->{'include'};
705: my $exclude = $token->[2]->{'exclude'};
706: my %languages=&Apache::loncommon::display_languages();
707: $result='1';
708: if ($include) {
709: $result='';
710: foreach (split(/\,/,$include)) {
711: if ($languages{$_}) { $result='1'; }
712: }
713: }
714: if ($exclude) {
715: foreach (split(/\,/,$exclude)) {
716: if ($languages{$_}) { $result='0'; }
717: }
718: }
719: if ( ! $result ) {
720: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
721: $style);
722: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
723: }
724: $result='';
725: } elsif ($target eq 'edit') {
726: $result .=&Apache::edit::tag_start($target,$token);
727: $result .=&Apache::edit::text_arg('Include Language:','include',
728: $token,40);
729: $result .=&Apache::edit::text_arg('Exclude Language:','exclude',
730: $token,40);
731: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
732: } elsif ($target eq 'modified') {
733: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
734: $safeeval,'include',
735: 'exclude');
736: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
737: }
738: return $result;
739: }
740:
741: sub end_languageblock {
742: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
743: my $result;
744: if ($target eq "edit") {
745: $result.= &Apache::edit::tag_end($target,$token,'');
746: }
747: return $result;
748: }
749:
750: sub start_instructorcomment {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
752:
753: my $result;
754:
755: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
756: $target eq 'tex' || $target eq 'analyze') {
757: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
758: if ( ! $result ) {
759: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
760: $parser,$style);
761: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
762: }
763: $result='';
764: } elsif ($target eq 'edit') {
765: $result .=&Apache::edit::tag_start($target,$token);
766: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
767: }
768: return $result;
769: }
770:
771: sub end_instructorcomment {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
773: my $result;
774: if ($target eq "edit") {
775: $result.= &Apache::edit::tag_end($target,$token,'');
776: }
777: return $result;
778: }
779:
780: sub start_while {
781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
782:
783: my $result;
784: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
785: $target eq 'tex' || $target eq 'analyze') {
786: my $code = $token->[2]->{'condition'};
787:
788: push( @Apache::structuretags::whileconds, $code);
789: if (!$Apache::lonxml::default_homework_loaded) {
790: &Apache::lonxml::default_homework_load($safeeval);
791: }
792: my $result = &Apache::run::run($code,$safeeval);
793: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
794: push( @Apache::structuretags::whilebody, $bodytext);
795: push( @Apache::structuretags::whileline, $token->[5]);
796: &Apache::lonxml::debug("s code $code got -$result-");
797: if ( $result ) {
798: &Apache::lonxml::newparser($parser,\$bodytext);
799: }
800: } elsif ($target eq 'edit') {
801: $result .=&Apache::edit::tag_start($target,$token);
802: $result .=&Apache::edit::text_arg('Test Condition:','condition',
803: $token,40);
804: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
805: } elsif ($target eq 'modified') {
806: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
807: $safeeval,'condition');
808: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
809: }
810: return $result;
811: }
812:
813: sub end_while {
814: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
815: my $result;
816:
817: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
818: $target eq 'tex' || $target eq 'analyze') {
819: my $code = pop(@Apache::structuretags::whileconds);
820: my $bodytext = pop(@Apache::structuretags::whilebody);
821: my $line = pop(@Apache::structuretags::whileline);
822: my $return = &Apache::run::run($code,$safeeval);
823: my $starttime=time;
824: my $error=0;
825: while ($return) {
826: if (time-$starttime >
827: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
828: $return = 0; $error=1; next;
829: }
830: $result.=&Apache::scripttag::xmlparse($bodytext);
831: $return = &Apache::run::run($code,$safeeval);
832: }
833: if ($error) {
834: &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>');
835: }
836: } elsif ($target eq "edit") {
837: $result.= &Apache::edit::tag_end($target,$token,'');
838: }
839: return $result;
840: }
841:
842: # <randomlist show="1">
843: # <tag1>..</tag1>
844: # <tag2>..</tag2>
845: # <tag3>..</tag3>
846: # ...
847: # </randomlist>
848: sub start_randomlist {
849: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
850: my $result;
851: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
852: $target eq 'tex' || $target eq 'analyze') {
853: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
854: my $b_parser= HTML::TokeParser->new(\$body);
855: my $b_tok;
856: my @randomlist;
857: my $list_item;
858: while($b_tok = $b_parser->get_token() ) {
859: if($b_tok->[0] eq 'S') { # start tag
860: # get content of the tag until matching end tag
861: # get all text upto the matching tag
862: # and push the content into @randomlist
863: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
864: $b_parser);
865: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
866: push(@randomlist,$list_item);
867: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
868: # $list_item</b>";
869: }
870: if($b_tok->[0] eq 'T') { # text
871: # what to do with text in between tags?
872: # print "<b>TEXT $b_tok->[1]</b><br />";
873: }
874: # if($b_tok->[0] eq 'E') { # end tag, should not happen
875: # print "<b>END-TAG $b_tok->[1]</b><br />";
876: # }
877: }
878: my @idx_arr = (0 .. $#randomlist);
879: &Apache::structuretags::shuffle(\@idx_arr);
880: my $bodytext = '';
881: my $show=$#randomlist;
882: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
883: $showarg--;
884: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
885: for(0 .. $show) {
886: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
887: }
888: &Apache::lonxml::newparser($parser,\$bodytext);
889: } elsif ($target eq 'edit' ) {
890: $result .=&Apache::edit::tag_start($target,$token);
891: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
892: $token,5);
893: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
894: } elsif ($target eq 'modified' ) {
895: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
896: $safeeval,'show');
897: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
898: }
899: return $result;
900: }
901:
902: sub shuffle {
903: my $a=shift;
904: my $i;
905: if (defined(@$a)) {
906: &Apache::response::setrandomnumber();
907: for($i=@$a;--$i;) {
908: my $j=int(&Math::Random::random_uniform() * ($i+1));
909: next if $i == $j;
910: @$a[$i,$j] = @$a[$j,$i];
911: }
912: }
913: }
914:
915: sub end_randomlist {
916: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
917: my $result;
918: if ($target eq 'edit' ) {
919: $result=&Apache::edit::tag_end($target,$token,
920: 'End Randomly Parsed Block');
921: }
922: return $result;
923: }
924:
925: sub start_part {
926: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
927: my $result='';
928: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
929: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
930: $Apache::inputtags::part=$id;
931: push(@Apache::inputtags::partlist,$id);
932: @Apache::inputtags::response=();
933: @Apache::inputtags::previous=();
934: @Apache::inputtags::previous_version=();
935: $Apache::lonhomework::problemstatus=
936: &Apache::lonnet::EXT("resource.$id.problemstatus");
937: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
938: my $expression='$external::part='.$Apache::inputtags::part.';';
939: &Apache::run::run($expression,$safeeval);
940:
941: if ($target eq 'meta') {
942: return &Apache::response::mandatory_part_meta;
943: } elsif ($target eq 'web' || $target eq 'grade' ||
944: $target eq 'answer' || $target eq 'tex') {
945: if ($hidden) {
946: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
947: } else {
948: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
949: push (@Apache::inputtags::status,$status);
950: my $expression='$external::datestatus="'.$status.'";';
951: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
952: &Apache::run::run($expression,$safeeval);
953: if ( $status eq 'CLOSED' ) {
954: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
955: if ( $target eq "web" ) {
956: $result="<br />Part is not open to be viewed. It $accessmsg<br />";
957: } elsif ( $target eq 'tex' ) {
958: if (not $ENV{'form.problem_split'}=~/yes/) {
959: $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";
960: } else {
961: $result="\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\";
962: }
963: }
964: } else {
965: if ($target eq 'tex') {
966: if (not $ENV{'form.problem_split'}=~/yes/) {
967: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
968: }
969: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
970: if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
971: }
972: }
973: }
974: } elsif ($target eq 'edit') {
975: $result.=&Apache::edit::tag_start($target,$token);
976: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
977: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
978: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
979: } elsif ($target eq 'modified') {
980: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
981: $safeeval,'id');
982: if ($constructtag) {
983: $result = &Apache::edit::rebuild_tag($token);
984: $result.=&Apache::edit::handle_insert();
985: }
986: }
987: return $result;
988: }
989:
990: sub end_part {
991: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
992: &Apache::lonxml::debug("in end_part $target ");
993: my $status=$Apache::inputtags::status['-1'];
994: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
995: my $result='';
996: if ( $target eq 'meta' ) {
997: $result='';
998: } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {
999: $result=&Apache::inputtags::grade;
1000: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1001: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1002: $target);
1003: if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}
1004: $result=$gradestatus;
1005: } elsif ($target eq 'edit') {
1006: $result=&Apache::edit::end_table();
1007: }
1008: pop @Apache::inputtags::status;
1009: $Apache::inputtags::part='';
1010: return $result;
1011: }
1012:
1013: sub start_preduedate {
1014: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1015: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1016: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1017: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
1018: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1019: &Apache::lonxml::get_all_text("/preduedate",$parser);
1020: }
1021: }
1022: return '';
1023: }
1024:
1025: sub end_preduedate {
1026: return '';
1027: }
1028:
1029: sub start_postanswerdate {
1030: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1031: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
1032: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1033: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1034: }
1035: } elsif ($target eq 'tex') {
1036: return '\vskip 0 mm \noindent';
1037: }
1038: return '';
1039: }
1040:
1041: sub end_postanswerdate {
1042: return '';
1043: }
1044:
1045: sub start_notsolved {
1046: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1047: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1048: $target eq 'tex') {
1049: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1050: &Apache::lonxml::debug("not solved has :$gradestatus:");
1051: if ($gradestatus =~ /^correct/) {
1052: &Apache::lonxml::debug("skipping");
1053: &Apache::lonxml::get_all_text("/notsolved",$parser);
1054: }
1055: }
1056: return '';
1057: }
1058:
1059: sub end_notsolved {
1060: return '';
1061: }
1062:
1063: sub start_solved {
1064: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1065: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1066: $target eq 'tex') {
1067: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1068: if ($gradestatus !~ /^correct/) {
1069: &Apache::lonxml::get_all_text("/solved",$parser);
1070: }
1071: }
1072: return '';
1073: }
1074:
1075: sub end_solved {
1076: return '';
1077: }
1078:
1079: sub start_startouttext {
1080: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1081: my @result=(''.'');
1082: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1083: return (@result);
1084: }
1085:
1086: sub end_startouttext {
1087: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1088: my $result='';
1089: my $text='';
1090:
1091: if ($target eq 'edit') {
1092: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1093: $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
1094: <td>Delete:".
1095: &Apache::edit::deletelist($target,$token)
1096: ."</td>
1097: <td>".
1098: &Apache::edit::insertlist($target,$token).
1099: &Apache::edit::end_row().
1100: &Apache::edit::start_spanning_row()."\n"
1101: . &Apache::loncommon::helpLatexCheatsheet () .
1102: &Apache::edit::editfield($token->[1],$text,"",80,4);
1103: }
1104: if ($target eq 'modified') {
1105: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1106: $result='<startouttext />'.&Apache::edit::modifiedfield();
1107: }
1108: if ($target eq 'tex') {
1109: $result .= '\noindent ';
1110: }
1111: return $result;
1112: }
1113:
1114: sub start_endouttext {
1115: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1116: my $result='';
1117: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1118: if ($target eq "modified") {
1119: $result='<endouttext />'.
1120: &Apache::edit::handle_insertafter('startouttext'); }
1121: return $result;
1122: }
1123:
1124: sub end_endouttext {
1125: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1126: my @result=('','');
1127: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1128: return (@result);
1129: }
1130:
1131: sub delete_startouttext {
1132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1133: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1134: my $text=$$parser['-1']->get_text("/endouttext");
1135: my $ntoken=$$parser['-1']->get_token();
1136: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1137: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1138: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1139: # they did the last time round
1140: &Apache::lonxml::increasedepth($ntoken);
1141: &Apache::lonxml::decreasedepth($ntoken);
1142: return 1;
1143: }
1144:
1145: sub start_simpleeditbutton {
1146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1147: my $result='';
1148: if (($target eq 'web') &&
1149: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1150: my $url=$ENV{'REQUEST_URI'};
1151: $url=~s/\?.*$//;
1152: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1153: '<a href="'.$url.'/smpedit">Simple Problem Editor</a> - Note: it can take up to 10 minutes for changes to take effect for all users.'.
1154: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1155: }
1156: return $result;
1157: }
1158:
1159: sub end_simpleeditbutton {
1160: return '';
1161: }
1162:
1163: 1;
1164: __END__
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