1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
3: #
4: # $Id: structuretags.pm,v 1.214 2003/10/08 16:37:30 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=&mt("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 $result;
262: }
263:
264: sub checkout_msg {
265: my %lt=&Apache::lonlocal::texthash(
266: 'resource'=>'The resource needs to be checked out',
267: 'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
268: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
269: 'checkout'=>'Check out Exam for Viewing',
270: 'checkout?'=>'Check out Exam?');
271: return (<<ENDCHECKOUT);
272: <h2>$lt{'resource'}</h2>
273: <p>$lt{'id_expln'}</p>
274: <font color="red">
275: <p>$lt{'warning'}</p>
276: </font>
277: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
278: <input type="hidden" name="doescheckout" value="yes" />
279: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
280: </form>
281: ENDCHECKOUT
282: }
283:
284: sub init_problem_globals {
285: my ($type)=@_;
286: #initialize globals
287: if ($type eq 'problem') {
288: $Apache::inputtags::part='0';
289: @Apache::inputtags::partlist=('0');
290: $Apache::lonhomework::problemstatus=
291: &Apache::lonnet::EXT('resource.0.problemstatus');
292: } else {
293: $Apache::inputtags::part='';
294: @Apache::inputtags::partlist=();
295: $Apache::lonhomework::problemstatus='';
296: }
297: @Apache::inputtags::responselist = ();
298: @Apache::inputtags::importlist = ();
299: @Apache::inputtags::previous=();
300: @Apache::inputtags::previous_version=();
301: $Apache::structuretags::printanswer='No';
302: @Apache::structuretags::whileconds=();
303: @Apache::structuretags::whilebody=();
304: @Apache::structuretags::whileline=();
305: $Apache::lonhomework::scantronmode=0;
306: undef($Apache::lonhomework::name);
307:
308: }
309:
310: sub reset_problem_globals {
311: my ($type)=@_;
312: undef(%Apache::lonhomework::history);
313: undef(%Apache::lonhomework::results);
314: undef($Apache::inputtags::part);
315: #don't undef this, lonhomework.pm takes care of this, we use this to
316: #detect if we try to do 2 problems in one file
317: # undef($Apache::lonhomework::parsing_a_problem);
318: undef($Apache::lonhomework::name);
319: }
320:
321: sub start_problem {
322: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
323:
324: if ( $Apache::inputtags::part ne '' ||
325: $Apache::lonhomework::parsing_a_problem) {
326: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
327: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
328: return '';
329: }
330:
331: $Apache::lonhomework::parsing_a_problem=1;
332: &init_problem_globals('problem');
333:
334: if (defined($ENV{'scantron.maxquest'})) {
335: $Apache::lonhomework::scantronmode=1;
336: }
337:
338: if ($target ne 'analyze') {
339: &initialize_storage();
340: if ($target eq 'web') {
341: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
342: }
343: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
344: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
345: }
346: if ($Apache::lonhomework::type eq '' ) {
347: my $uri=$ENV{'request.uri'};
348: if ($uri=~/\.(\w+)$/) {
349: $Apache::lonhomework::type=$1;
350: &Apache::lonxml::debug("Using type of $1");
351: } else {
352: $Apache::lonhomework::type='problem';
353: &Apache::lonxml::debug("Using default type, problem, :$uri:");
354: }
355: }
356:
357: #added vars to the scripting enviroment
358: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
359: &Apache::run::run($expression,$safeeval);
360: my $status;
361: my $accessmsg;
362:
363: #should get back a <html> or the neccesary stuff to start XML/MathML
364: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
365: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
366: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
367:
368: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
369: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
370: $target eq 'tex') {
371: #handle exam checkout
372: if ($Apache::lonhomework::type eq 'exam') {
373: my $token=
374: $Apache::lonhomework::history{"resource.0.outtoken"};
375: if (($ENV{'form.doescheckout'}) && (!$token)) {
376: $token=&Apache::lonxml::maketoken();
377: $Apache::lonhomework::history{"resource.0.outtoken"}=
378: $token;
379: }
380: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
381: }
382:
383: #handle rand seed in construction space
384: my $rndseed=&setup_rndseed($safeeval);
385: my ($symb)=&Apache::lonxml::whichuser();
386: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
387: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
388: $rndseed.'" />'.
389: '<input type="submit" name="resetdata"
390: value="'.&mt('New Problem Variation').'" />'.
391: '<input type="hidden" name="username"
392: value="'.$ENV{'form.username'}.'" /> <br />';
393: }
394: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
395: push (@Apache::inputtags::status,$status);
396: my $expression='$external::datestatus="'.$status.'";';
397: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
398: &Apache::run::run($expression,$safeeval);
399: &Apache::lonxml::debug("Got $status");
400: if (( $status eq 'CLOSED' ) ||
401: ( $status eq 'UNCHECKEDOUT') ||
402: ( $status eq 'BANNED') ||
403: ( $status eq 'UNAVAILABLE')) {
404: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
405: if ( $target eq "web" ) {
406: $result.= $head_tag_start.'</head>';
407: my $msg=$body_tag_start;
408: if ($status eq 'UNAVAILABLE') {
409: $result.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
410: } else {
411: $result.='<h1>'.&mt('Not open to be viewed').'</h1>';
412: }
413: if ($status eq 'CLOSED') {
414: $msg.='The problem '.$accessmsg;
415: } elsif ($status eq 'UNCHECKEDOUT') {
416: $msg.=&checkout_msg;
417: }
418: $result.=$msg.'<br />';
419: } elsif ($target eq 'tex') {
420: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
421: if ($status eq 'UNAVAILABLE') {
422: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
423: } else {
424: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
425: }
426: }
427: } elsif ($target eq 'web') {
428: my $name= &get_resource_name($parstack,$safeeval);
429: if ($status eq 'CAN_ANSWER') {
430: # create a page header and exit
431: $result.="$head_tag_start<title>$name</title></head>
432: $body_tag_start \n $form_tag_start".
433: '<input type="hidden" name="submitted" value="yes" />';
434: if ($ENV{'request.state'} eq "construct") {
435: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
436: }
437: # if we are viewing someone else preserve that info
438: if (defined $ENV{'form.grade_symb'}) {
439: foreach my $field ('symb','courseid','domain','username') {
440: $result .= '<input type="hidden" name="grade_'.$field.
441: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
442: }
443: }
444: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
445: || $status eq 'CLOSED' || $status eq 'UNAVALAILABLE') {
446: $result.=$head_tag_start.
447: "<title>$name</title></head>\n$body_tag_start\n";
448: }
449: } elsif ($target eq 'tex') {
450: my $startminipage = '';
451: if (not $ENV{'form.problem_split'}=~/yes/) {
452: $startminipage = '\begin{minipage}{\textwidth}';
453: }
454: my $id = $Apache::inputtags::part;
455: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
456: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'keys');
457: my @allkeys = split /,/,$allkeys;
458: my $allow_print_points = 0;
459: foreach my $partial_key (@allkeys) {
460: if ($partial_key=~m/weight/) {
461: $allow_print_points++;
462: }
463: }
464: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
465: $duedate = POSIX::strftime("%c",localtime($duedate));
466: my $temp_file;
467: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
468: if (-e $filename) {
469: $temp_file = Apache::File->new($filename);
470: } else {
471: $temp_file = Apache::File->new('>>'.$filename);
472: }
473: my @due_file_content = <$temp_file>;
474: my $due_file_content = $due_file_content[$#due_file_content];
475: chomp $due_file_content;
476: my $name_of_resourse= &get_resource_name($parstack,$safeeval);
477: if ($due_file_content ne $duedate) {
478: $temp_file = Apache::File->new('>'.$filename);
479: print $temp_file "$duedate\n";
480: if (not $ENV{'request.symb'} =~ m/\.page_/) {
481: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
482: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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.'}';
483: } else {
484: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
485: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
486: }
487: } else {
488: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
489: }
490: } else {
491: if (not $ENV{'request.symb'} =~ m/\.page_/) {
492: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
493: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
494: } else {
495: $result .= '\vskip 1mm \\\\\\\\';
496: }
497: }
498: }
499: } elsif ($target eq 'edit') {
500: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
501: &problem_edit_header();
502: my $temp=&Apache::edit::insertlist($target,$token);
503: $result.=$temp;
504: } elsif ($target eq 'modified') {
505: $result=$token->[4];
506: $result.=&Apache::edit::handle_insert();
507: } else {
508: # page_start returned a starting result, delete it if we don't need it
509: $result = '';
510: }
511: return $result;
512: }
513:
514: sub end_problem {
515: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
516: my $result='';
517: my $status=$Apache::inputtags::status['-1'];
518: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
519: $target eq 'tex') {
520: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
521: $status eq 'CAN_ANSWER' ) {
522: # if part is zero, no <part>s existed, so we need to the grading
523: &Apache::inputtags::grade;
524: } elsif ( ($target eq 'web' || $target eq 'tex') &&
525: $Apache::inputtags::part eq '0' &&
526: $status ne 'UNCHECKEDOUT') {
527: # if part is zero, no <part>s existed, so we need show the current
528: # grading status
529: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
530: $result.= $gradestatus;
531: }
532: if (
533: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
534: ($target eq 'answer') || ($target eq 'tex')
535: ) {
536: if ($status eq 'CAN_ANSWER') {
537: if ($target ne 'tex' &&
538: $ENV{'form.answer_output_mode'} ne 'tex') {
539: $result.="</form></body>\n";
540: }
541: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
542: $status eq 'UNCHECKEDOUT' ) {
543: if ($target ne 'tex' &&
544: $ENV{'form.answer_output_mode'} ne 'tex') {
545: $result.="</body>\n";
546: }
547: }
548: if ($target eq 'web') {
549: $result.=&Apache::lonxml::xmlend();
550: } elsif ($target eq 'tex') {
551: my $endminipage = '';
552: if (not $ENV{'form.problem_split'}=~/yes/) {
553: $endminipage = '\end{minipage}';
554: }
555: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
556: if (not $ENV{'request.symb'} =~ m/\.page_/) {
557: $result .= $endminipage.'\end{document} ';
558: } else {
559: $result .= '';
560: }
561: }
562: }
563: if ($target eq 'grade') {
564: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
565: &finalize_storage();
566: }
567: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
568: && $ENV{'form.answer_output_mode'} ne 'tex') {
569: $result.='</html>'; # normally we get it from xmlend, but in CSTR
570: # we always show answer mode too.
571: }
572: } elsif ($target eq 'meta') {
573: if ($Apache::inputtags::part eq '0') {
574: @Apache::inputtags::response=();
575: $result=&Apache::response::mandatory_part_meta;
576: }
577: } elsif ($target eq 'edit') {
578: &Apache::lonxml::debug("in end_problem with $target, edit");
579: $result = &problem_edit_footer();
580: }
581:
582: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
583: &Apache::inputtags::check_for_duplicate_ids();
584: }
585:
586: &reset_problem_globals('problem');
587:
588: return $result;
589: }
590:
591:
592: sub start_library {
593: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
594: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
595: if ($$tagstack[0] eq 'library') { &init_problem_globals('library') };
596: if ($target eq 'edit') {
597: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
598: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
599: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
600: &problem_edit_header();
601: my $temp=&Apache::edit::insertlist($target,$token);
602: $result.=$temp;
603: } elsif ($target eq 'modified') {
604: $result=$token->[4];
605: $result.=&Apache::edit::handle_insert();
606: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
607: $ENV{'request.state'} eq "construct" ) {
608: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
609: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
610: my $name=&get_resource_name($parstack,$safeeval);
611: my $rndseed=&setup_rndseed($safeeval);
612: $result.="$head_tag_start<title>$name</title></head>
613: $body_tag_start \n $form_tag_start".
614: '<input type="hidden" name="submitted" value="yes" />';
615: $result.=&problem_web_to_edit_header($rndseed);
616: }
617: return $result;
618: }
619:
620: sub end_library {
621: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
622: my $result='';
623: if ($target eq 'edit') {
624: $result=&problem_edit_footer();
625: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
626: $ENV{'request.state'} eq "construct") {
627: $result.='</form></body>'.&Apache::lonxml::xmlend();
628: }
629: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
630: return $result;
631: }
632:
633: sub start_definetag {
634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
635:
636: my $result;
637:
638: my $name = $token->[2]->{'name'};
639: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
640: if ($name=~/^\//) {
641: $result=
642: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
643: } else {
644: $result=
645: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
646: }
647: $skip=~s/\</\<\;/gs;
648: $skip=~s/\>/\>\;/gs;
649: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
650: return $result;
651: }
652:
653: sub end_definetag {
654: return '';
655: }
656:
657: sub start_block {
658: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
659:
660: my $result;
661:
662: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
663: $target eq 'tex' || $target eq 'analyze') {
664: my $code = $token->[2]->{'condition'};
665: if (defined($code)) {
666: if (!$Apache::lonxml::default_homework_loaded) {
667: &Apache::lonxml::default_homework_load($safeeval);
668: }
669: $result = &Apache::run::run($code,$safeeval);
670: &Apache::lonxml::debug("block :$code: returned :$result:");
671: } else {
672: $result='1';
673: }
674: if ( ! $result ) {
675: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
676: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
677: }
678: $result='';
679: } elsif ($target eq 'edit') {
680: $result .=&Apache::edit::tag_start($target,$token);
681: $result .=&Apache::edit::text_arg('Test Condition:','condition',
682: $token,40);
683: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
684: } elsif ($target eq 'modified') {
685: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
686: $safeeval,'condition');
687: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
688: }
689: return $result;
690: }
691:
692: sub end_block {
693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
694: my $result;
695: if ($target eq "edit") {
696: $result.= &Apache::edit::tag_end($target,$token,'');
697: }
698: return $result;
699: }
700:
701: sub start_languageblock {
702: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
703:
704: my $result;
705:
706: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
707: $target eq 'tex' || $target eq 'analyze') {
708: my $include = $token->[2]->{'include'};
709: my $exclude = $token->[2]->{'exclude'};
710: my %languages=&Apache::loncommon::display_languages();
711: $result='1';
712: if ($include) {
713: $result='';
714: foreach (split(/\,/,$include)) {
715: if ($languages{$_}) { $result='1'; }
716: }
717: }
718: if ($exclude) {
719: foreach (split(/\,/,$exclude)) {
720: if ($languages{$_}) { $result='0'; }
721: }
722: }
723: if ( ! $result ) {
724: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
725: $style);
726: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
727: }
728: $result='';
729: } elsif ($target eq 'edit') {
730: $result .=&Apache::edit::tag_start($target,$token);
731: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
732: $token,40);
733: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
734: $token,40);
735: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
736: } elsif ($target eq 'modified') {
737: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
738: $safeeval,'include',
739: 'exclude');
740: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
741: }
742: return $result;
743: }
744:
745: sub end_languageblock {
746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
747: my $result;
748: if ($target eq "edit") {
749: $result.= &Apache::edit::tag_end($target,$token,'');
750: }
751: return $result;
752: }
753:
754: sub start_instructorcomment {
755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
756:
757: my $result;
758:
759: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
760: $target eq 'tex' || $target eq 'analyze') {
761: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
762: if ( ! $result ) {
763: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
764: $parser,$style);
765: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
766: }
767: $result='';
768: } elsif ($target eq 'edit') {
769: $result .=&Apache::edit::tag_start($target,$token);
770: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
771: }
772: return $result;
773: }
774:
775: sub end_instructorcomment {
776: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
777: my $result;
778: if ($target eq "edit") {
779: $result.= &Apache::edit::tag_end($target,$token,'');
780: }
781: return $result;
782: }
783:
784: sub start_while {
785: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
786:
787: my $result;
788: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
789: $target eq 'tex' || $target eq 'analyze') {
790: my $code = $token->[2]->{'condition'};
791:
792: push( @Apache::structuretags::whileconds, $code);
793: if (!$Apache::lonxml::default_homework_loaded) {
794: &Apache::lonxml::default_homework_load($safeeval);
795: }
796: my $result = &Apache::run::run($code,$safeeval);
797: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
798: push( @Apache::structuretags::whilebody, $bodytext);
799: push( @Apache::structuretags::whileline, $token->[5]);
800: &Apache::lonxml::debug("s code $code got -$result-");
801: if ( $result ) {
802: &Apache::lonxml::newparser($parser,\$bodytext);
803: }
804: } elsif ($target eq 'edit') {
805: $result .=&Apache::edit::tag_start($target,$token);
806: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
807: $token,40);
808: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
809: } elsif ($target eq 'modified') {
810: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
811: $safeeval,'condition');
812: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
813: }
814: return $result;
815: }
816:
817: sub end_while {
818: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
819: my $result;
820:
821: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
822: $target eq 'tex' || $target eq 'analyze') {
823: my $code = pop(@Apache::structuretags::whileconds);
824: my $bodytext = pop(@Apache::structuretags::whilebody);
825: my $line = pop(@Apache::structuretags::whileline);
826: my $return = &Apache::run::run($code,$safeeval);
827: my $starttime=time;
828: my $error=0;
829: while ($return) {
830: if (time-$starttime >
831: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
832: $return = 0; $error=1; next;
833: }
834: $result.=&Apache::scripttag::xmlparse($bodytext);
835: $return = &Apache::run::run($code,$safeeval);
836: }
837: if ($error) {
838: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running <while$gt; on line').' '.$line.'</pre>');
839: }
840: } elsif ($target eq "edit") {
841: $result.= &Apache::edit::tag_end($target,$token,'');
842: }
843: return $result;
844: }
845:
846: # <randomlist show="1">
847: # <tag1>..</tag1>
848: # <tag2>..</tag2>
849: # <tag3>..</tag3>
850: # ...
851: # </randomlist>
852: sub start_randomlist {
853: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
854: my $result;
855: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
856: $target eq 'tex' || $target eq 'analyze') {
857: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
858: my $b_parser= HTML::TokeParser->new(\$body);
859: my $b_tok;
860: my @randomlist;
861: my $list_item;
862: while($b_tok = $b_parser->get_token() ) {
863: if($b_tok->[0] eq 'S') { # start tag
864: # get content of the tag until matching end tag
865: # get all text upto the matching tag
866: # and push the content into @randomlist
867: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
868: $b_parser);
869: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
870: push(@randomlist,$list_item);
871: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
872: # $list_item</b>";
873: }
874: if($b_tok->[0] eq 'T') { # text
875: # what to do with text in between tags?
876: # print "<b>TEXT $b_tok->[1]</b><br />";
877: }
878: # if($b_tok->[0] eq 'E') { # end tag, should not happen
879: # print "<b>END-TAG $b_tok->[1]</b><br />";
880: # }
881: }
882: my @idx_arr = (0 .. $#randomlist);
883: &Apache::structuretags::shuffle(\@idx_arr);
884: my $bodytext = '';
885: my $show=$#randomlist;
886: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
887: $showarg--;
888: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
889: for(0 .. $show) {
890: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
891: }
892: &Apache::lonxml::newparser($parser,\$bodytext);
893: } elsif ($target eq 'edit' ) {
894: $result .=&Apache::edit::tag_start($target,$token);
895: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
896: $token,5);
897: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
898: } elsif ($target eq 'modified' ) {
899: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
900: $safeeval,'show');
901: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
902: }
903: return $result;
904: }
905:
906: sub shuffle {
907: my $a=shift;
908: my $i;
909: if (defined(@$a)) {
910: &Apache::response::setrandomnumber();
911: for($i=@$a;--$i;) {
912: my $j=int(&Math::Random::random_uniform() * ($i+1));
913: next if $i == $j;
914: @$a[$i,$j] = @$a[$j,$i];
915: }
916: }
917: }
918:
919: sub end_randomlist {
920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
921: my $result;
922: if ($target eq 'edit' ) {
923: $result=&Apache::edit::tag_end($target,$token,
924: 'End Randomly Parsed Block');
925: }
926: return $result;
927: }
928:
929: sub start_part {
930: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
931: my $result='';
932: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
933: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
934: $Apache::inputtags::part=$id;
935: push(@Apache::inputtags::partlist,$id);
936: @Apache::inputtags::response=();
937: @Apache::inputtags::previous=();
938: @Apache::inputtags::previous_version=();
939: $Apache::lonhomework::problemstatus=
940: &Apache::lonnet::EXT("resource.$id.problemstatus");
941: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
942: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
943: &Apache::run::run($expression,$safeeval);
944:
945: if ($target eq 'meta') {
946: return &Apache::response::mandatory_part_meta;
947: } elsif ($target eq 'web' || $target eq 'grade' ||
948: $target eq 'answer' || $target eq 'tex') {
949: if ($hidden) {
950: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
951: } else {
952: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
953: push (@Apache::inputtags::status,$status);
954: my $expression='$external::datestatus="'.$status.'";';
955: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
956: &Apache::run::run($expression,$safeeval);
957: if ( $status eq 'CLOSED' ) {
958: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
959: if ( $target eq "web" ) {
960: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
961: } elsif ( $target eq 'tex' ) {
962: if (not $ENV{'form.problem_split'}=~/yes/) {
963: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
964: } else {
965: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
966: }
967: }
968: } else {
969: if ($target eq 'tex') {
970: if (not $ENV{'form.problem_split'}=~/yes/) {
971: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
972: }
973: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
974: if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
975: }
976: }
977: }
978: } elsif ($target eq 'edit') {
979: $result.=&Apache::edit::tag_start($target,$token);
980: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
981: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
982: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
983: } elsif ($target eq 'modified') {
984: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
985: $safeeval,'id');
986: if ($constructtag) {
987: $result = &Apache::edit::rebuild_tag($token);
988: $result.=&Apache::edit::handle_insert();
989: }
990: }
991: return $result;
992: }
993:
994: sub end_part {
995: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
996: &Apache::lonxml::debug("in end_part $target ");
997: my $status=$Apache::inputtags::status['-1'];
998: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
999: my $result='';
1000: if ( $target eq 'meta' ) {
1001: $result='';
1002: } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {
1003: $result=&Apache::inputtags::grade;
1004: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1005: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1006: $target);
1007: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1008: $gradestatus='';
1009: }
1010: $result=$gradestatus;
1011: } elsif ($target eq 'edit') {
1012: $result=&Apache::edit::end_table();
1013: }
1014: pop @Apache::inputtags::status;
1015: $Apache::inputtags::part='';
1016: return $result;
1017: }
1018:
1019: sub start_preduedate {
1020: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1021: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1022: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1023: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
1024: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1025: &Apache::lonxml::get_all_text("/preduedate",$parser);
1026: }
1027: }
1028: return '';
1029: }
1030:
1031: sub end_preduedate {
1032: return '';
1033: }
1034:
1035: sub start_postanswerdate {
1036: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1037: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
1038: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1039: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1040: }
1041: } elsif ($target eq 'tex') {
1042: return '\vskip 0 mm \noindent';
1043: }
1044: return '';
1045: }
1046:
1047: sub end_postanswerdate {
1048: return '';
1049: }
1050:
1051: sub start_notsolved {
1052: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1053: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1054: $target eq 'tex') {
1055: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1056: &Apache::lonxml::debug("not solved has :$gradestatus:");
1057: if ($gradestatus =~ /^correct/) {
1058: &Apache::lonxml::debug("skipping");
1059: &Apache::lonxml::get_all_text("/notsolved",$parser);
1060: }
1061: }
1062: return '';
1063: }
1064:
1065: sub end_notsolved {
1066: return '';
1067: }
1068:
1069: sub start_solved {
1070: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1071: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1072: $target eq 'tex') {
1073: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1074: if ($gradestatus !~ /^correct/) {
1075: &Apache::lonxml::get_all_text("/solved",$parser);
1076: }
1077: }
1078: return '';
1079: }
1080:
1081: sub end_solved {
1082: return '';
1083: }
1084:
1085: sub start_startouttext {
1086: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1087: my @result=(''.'');
1088: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1089: return (@result);
1090: }
1091:
1092: sub end_startouttext {
1093: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1094: my $result='';
1095: my $text='';
1096:
1097: if ($target eq 'edit') {
1098: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1099: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1100: <td>".&mt('Delete:').
1101: &Apache::edit::deletelist($target,$token)
1102: ."</td>
1103: <td>".
1104: &Apache::edit::insertlist($target,$token).
1105: &Apache::edit::end_row().
1106: &Apache::edit::start_spanning_row()."\n"
1107: . &Apache::loncommon::helpLatexCheatsheet () .
1108: &Apache::edit::editfield($token->[1],$text,"",80,4);
1109: }
1110: if ($target eq 'modified') {
1111: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1112: $result='<startouttext />'.&Apache::edit::modifiedfield();
1113: }
1114: if ($target eq 'tex') {
1115: $result .= '\noindent ';
1116: }
1117: return $result;
1118: }
1119:
1120: sub start_endouttext {
1121: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1122: my $result='';
1123: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1124: if ($target eq "modified") {
1125: $result='<endouttext />'.
1126: &Apache::edit::handle_insertafter('startouttext'); }
1127: return $result;
1128: }
1129:
1130: sub end_endouttext {
1131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1132: my @result=('','');
1133: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1134: return (@result);
1135: }
1136:
1137: sub delete_startouttext {
1138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1139: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1140: my $text=$$parser['-1']->get_text("/endouttext");
1141: my $ntoken=$$parser['-1']->get_token();
1142: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1143: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1144: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1145: # they did the last time round
1146: &Apache::lonxml::increasedepth($ntoken);
1147: &Apache::lonxml::decreasedepth($ntoken);
1148: return 1;
1149: }
1150:
1151: sub start_simpleeditbutton {
1152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1153: my $result='';
1154: if (($target eq 'web') &&
1155: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1156: my $url=$ENV{'REQUEST_URI'};
1157: $url=~s/\?.*$//;
1158: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1159: '<a href="'.$url.'/smpedit">'.&mt('Simple Problem Editor').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1160: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1161: }
1162: return $result;
1163: }
1164:
1165: sub end_simpleeditbutton {
1166: return '';
1167: }
1168:
1169: 1;
1170: __END__
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