1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
3: #
4: # $Id: structuretags.pm,v 1.215 2003/10/09 21:49:24 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: $result.=&Apache::response::meta_part_order();
578: } elsif ($target eq 'edit') {
579: &Apache::lonxml::debug("in end_problem with $target, edit");
580: $result = &problem_edit_footer();
581: }
582:
583: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
584: &Apache::inputtags::check_for_duplicate_ids();
585: }
586:
587: &reset_problem_globals('problem');
588:
589: return $result;
590: }
591:
592:
593: sub start_library {
594: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
595: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
596: if ($$tagstack[0] eq 'library') { &init_problem_globals('library') };
597: if ($target eq 'edit') {
598: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
599: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
600: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
601: &problem_edit_header();
602: my $temp=&Apache::edit::insertlist($target,$token);
603: $result.=$temp;
604: } elsif ($target eq 'modified') {
605: $result=$token->[4];
606: $result.=&Apache::edit::handle_insert();
607: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
608: $ENV{'request.state'} eq "construct" ) {
609: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
610: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
611: my $name=&get_resource_name($parstack,$safeeval);
612: my $rndseed=&setup_rndseed($safeeval);
613: $result.="$head_tag_start<title>$name</title></head>
614: $body_tag_start \n $form_tag_start".
615: '<input type="hidden" name="submitted" value="yes" />';
616: $result.=&problem_web_to_edit_header($rndseed);
617: }
618: return $result;
619: }
620:
621: sub end_library {
622: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
623: my $result='';
624: if ($target eq 'edit') {
625: $result=&problem_edit_footer();
626: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
627: $ENV{'request.state'} eq "construct") {
628: $result.='</form></body>'.&Apache::lonxml::xmlend();
629: }
630: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
631: return $result;
632: }
633:
634: sub start_definetag {
635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
636:
637: my $result;
638:
639: my $name = $token->[2]->{'name'};
640: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
641: if ($name=~/^\//) {
642: $result=
643: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
644: } else {
645: $result=
646: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
647: }
648: $skip=~s/\</\<\;/gs;
649: $skip=~s/\>/\>\;/gs;
650: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
651: return $result;
652: }
653:
654: sub end_definetag {
655: return '';
656: }
657:
658: sub start_block {
659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
660:
661: my $result;
662:
663: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
664: $target eq 'tex' || $target eq 'analyze') {
665: my $code = $token->[2]->{'condition'};
666: if (defined($code)) {
667: if (!$Apache::lonxml::default_homework_loaded) {
668: &Apache::lonxml::default_homework_load($safeeval);
669: }
670: $result = &Apache::run::run($code,$safeeval);
671: &Apache::lonxml::debug("block :$code: returned :$result:");
672: } else {
673: $result='1';
674: }
675: if ( ! $result ) {
676: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
677: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
678: }
679: $result='';
680: } elsif ($target eq 'edit') {
681: $result .=&Apache::edit::tag_start($target,$token);
682: $result .=&Apache::edit::text_arg('Test Condition:','condition',
683: $token,40);
684: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
685: } elsif ($target eq 'modified') {
686: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
687: $safeeval,'condition');
688: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
689: }
690: return $result;
691: }
692:
693: sub end_block {
694: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
695: my $result;
696: if ($target eq "edit") {
697: $result.= &Apache::edit::tag_end($target,$token,'');
698: }
699: return $result;
700: }
701:
702: sub start_languageblock {
703: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
704:
705: my $result;
706:
707: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
708: $target eq 'tex' || $target eq 'analyze') {
709: my $include = $token->[2]->{'include'};
710: my $exclude = $token->[2]->{'exclude'};
711: my %languages=&Apache::loncommon::display_languages();
712: $result='1';
713: if ($include) {
714: $result='';
715: foreach (split(/\,/,$include)) {
716: if ($languages{$_}) { $result='1'; }
717: }
718: }
719: if ($exclude) {
720: foreach (split(/\,/,$exclude)) {
721: if ($languages{$_}) { $result='0'; }
722: }
723: }
724: if ( ! $result ) {
725: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
726: $style);
727: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
728: }
729: $result='';
730: } elsif ($target eq 'edit') {
731: $result .=&Apache::edit::tag_start($target,$token);
732: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
733: $token,40);
734: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
735: $token,40);
736: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
737: } elsif ($target eq 'modified') {
738: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
739: $safeeval,'include',
740: 'exclude');
741: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
742: }
743: return $result;
744: }
745:
746: sub end_languageblock {
747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
748: my $result;
749: if ($target eq "edit") {
750: $result.= &Apache::edit::tag_end($target,$token,'');
751: }
752: return $result;
753: }
754:
755: sub start_instructorcomment {
756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
757:
758: my $result;
759:
760: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
761: $target eq 'tex' || $target eq 'analyze') {
762: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
763: if ( ! $result ) {
764: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
765: $parser,$style);
766: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
767: }
768: $result='';
769: } elsif ($target eq 'edit') {
770: $result .=&Apache::edit::tag_start($target,$token);
771: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
772: }
773: return $result;
774: }
775:
776: sub end_instructorcomment {
777: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
778: my $result;
779: if ($target eq "edit") {
780: $result.= &Apache::edit::tag_end($target,$token,'');
781: }
782: return $result;
783: }
784:
785: sub start_while {
786: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
787:
788: my $result;
789: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
790: $target eq 'tex' || $target eq 'analyze') {
791: my $code = $token->[2]->{'condition'};
792:
793: push( @Apache::structuretags::whileconds, $code);
794: if (!$Apache::lonxml::default_homework_loaded) {
795: &Apache::lonxml::default_homework_load($safeeval);
796: }
797: my $result = &Apache::run::run($code,$safeeval);
798: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
799: push( @Apache::structuretags::whilebody, $bodytext);
800: push( @Apache::structuretags::whileline, $token->[5]);
801: &Apache::lonxml::debug("s code $code got -$result-");
802: if ( $result ) {
803: &Apache::lonxml::newparser($parser,\$bodytext);
804: }
805: } elsif ($target eq 'edit') {
806: $result .=&Apache::edit::tag_start($target,$token);
807: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
808: $token,40);
809: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
810: } elsif ($target eq 'modified') {
811: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
812: $safeeval,'condition');
813: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
814: }
815: return $result;
816: }
817:
818: sub end_while {
819: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
820: my $result;
821:
822: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
823: $target eq 'tex' || $target eq 'analyze') {
824: my $code = pop(@Apache::structuretags::whileconds);
825: my $bodytext = pop(@Apache::structuretags::whilebody);
826: my $line = pop(@Apache::structuretags::whileline);
827: my $return = &Apache::run::run($code,$safeeval);
828: my $starttime=time;
829: my $error=0;
830: while ($return) {
831: if (time-$starttime >
832: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
833: $return = 0; $error=1; next;
834: }
835: $result.=&Apache::scripttag::xmlparse($bodytext);
836: $return = &Apache::run::run($code,$safeeval);
837: }
838: if ($error) {
839: &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>');
840: }
841: } elsif ($target eq "edit") {
842: $result.= &Apache::edit::tag_end($target,$token,'');
843: }
844: return $result;
845: }
846:
847: # <randomlist show="1">
848: # <tag1>..</tag1>
849: # <tag2>..</tag2>
850: # <tag3>..</tag3>
851: # ...
852: # </randomlist>
853: sub start_randomlist {
854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
855: my $result;
856: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
857: $target eq 'tex' || $target eq 'analyze') {
858: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
859: my $b_parser= HTML::TokeParser->new(\$body);
860: my $b_tok;
861: my @randomlist;
862: my $list_item;
863: while($b_tok = $b_parser->get_token() ) {
864: if($b_tok->[0] eq 'S') { # start tag
865: # get content of the tag until matching end tag
866: # get all text upto the matching tag
867: # and push the content into @randomlist
868: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
869: $b_parser);
870: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
871: push(@randomlist,$list_item);
872: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
873: # $list_item</b>";
874: }
875: if($b_tok->[0] eq 'T') { # text
876: # what to do with text in between tags?
877: # print "<b>TEXT $b_tok->[1]</b><br />";
878: }
879: # if($b_tok->[0] eq 'E') { # end tag, should not happen
880: # print "<b>END-TAG $b_tok->[1]</b><br />";
881: # }
882: }
883: my @idx_arr = (0 .. $#randomlist);
884: &Apache::structuretags::shuffle(\@idx_arr);
885: my $bodytext = '';
886: my $show=$#randomlist;
887: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
888: $showarg--;
889: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
890: for(0 .. $show) {
891: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
892: }
893: &Apache::lonxml::newparser($parser,\$bodytext);
894: } elsif ($target eq 'edit' ) {
895: $result .=&Apache::edit::tag_start($target,$token);
896: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
897: $token,5);
898: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
899: } elsif ($target eq 'modified' ) {
900: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
901: $safeeval,'show');
902: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
903: }
904: return $result;
905: }
906:
907: sub shuffle {
908: my $a=shift;
909: my $i;
910: if (defined(@$a)) {
911: &Apache::response::setrandomnumber();
912: for($i=@$a;--$i;) {
913: my $j=int(&Math::Random::random_uniform() * ($i+1));
914: next if $i == $j;
915: @$a[$i,$j] = @$a[$j,$i];
916: }
917: }
918: }
919:
920: sub end_randomlist {
921: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
922: my $result;
923: if ($target eq 'edit' ) {
924: $result=&Apache::edit::tag_end($target,$token,
925: 'End Randomly Parsed Block');
926: }
927: return $result;
928: }
929:
930: sub start_part {
931: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
932: my $result='';
933: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
934: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
935: $Apache::inputtags::part=$id;
936: push(@Apache::inputtags::partlist,$id);
937: @Apache::inputtags::response=();
938: @Apache::inputtags::previous=();
939: @Apache::inputtags::previous_version=();
940: $Apache::lonhomework::problemstatus=
941: &Apache::lonnet::EXT("resource.$id.problemstatus");
942: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
943: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
944: &Apache::run::run($expression,$safeeval);
945:
946: if ($target eq 'meta') {
947: return &Apache::response::mandatory_part_meta;
948: } elsif ($target eq 'web' || $target eq 'grade' ||
949: $target eq 'answer' || $target eq 'tex') {
950: if ($hidden) {
951: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
952: } else {
953: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
954: push (@Apache::inputtags::status,$status);
955: my $expression='$external::datestatus="'.$status.'";';
956: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
957: &Apache::run::run($expression,$safeeval);
958: if ( $status eq 'CLOSED' ) {
959: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
960: if ( $target eq "web" ) {
961: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
962: } elsif ( $target eq 'tex' ) {
963: if (not $ENV{'form.problem_split'}=~/yes/) {
964: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
965: } else {
966: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
967: }
968: }
969: } else {
970: if ($target eq 'tex') {
971: if (not $ENV{'form.problem_split'}=~/yes/) {
972: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
973: }
974: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
975: if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
976: }
977: }
978: }
979: } elsif ($target eq 'edit') {
980: $result.=&Apache::edit::tag_start($target,$token);
981: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
982: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
983: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
984: } elsif ($target eq 'modified') {
985: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
986: $safeeval,'id');
987: if ($constructtag) {
988: $result = &Apache::edit::rebuild_tag($token);
989: $result.=&Apache::edit::handle_insert();
990: }
991: }
992: return $result;
993: }
994:
995: sub end_part {
996: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
997: &Apache::lonxml::debug("in end_part $target ");
998: my $status=$Apache::inputtags::status['-1'];
999: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1000: my $result='';
1001: if ( $target eq 'meta' ) {
1002: $result='';
1003: } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {
1004: $result=&Apache::inputtags::grade;
1005: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1006: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1007: $target);
1008: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1009: $gradestatus='';
1010: }
1011: $result=$gradestatus;
1012: } elsif ($target eq 'edit') {
1013: $result=&Apache::edit::end_table();
1014: }
1015: pop @Apache::inputtags::status;
1016: $Apache::inputtags::part='';
1017: return $result;
1018: }
1019:
1020: sub start_preduedate {
1021: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1022: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1023: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1024: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
1025: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1026: &Apache::lonxml::get_all_text("/preduedate",$parser);
1027: }
1028: }
1029: return '';
1030: }
1031:
1032: sub end_preduedate {
1033: return '';
1034: }
1035:
1036: sub start_postanswerdate {
1037: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1038: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
1039: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1040: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1041: }
1042: } elsif ($target eq 'tex') {
1043: return '\vskip 0 mm \noindent';
1044: }
1045: return '';
1046: }
1047:
1048: sub end_postanswerdate {
1049: return '';
1050: }
1051:
1052: sub start_notsolved {
1053: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1054: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1055: $target eq 'tex') {
1056: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1057: &Apache::lonxml::debug("not solved has :$gradestatus:");
1058: if ($gradestatus =~ /^correct/) {
1059: &Apache::lonxml::debug("skipping");
1060: &Apache::lonxml::get_all_text("/notsolved",$parser);
1061: }
1062: }
1063: return '';
1064: }
1065:
1066: sub end_notsolved {
1067: return '';
1068: }
1069:
1070: sub start_solved {
1071: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1072: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1073: $target eq 'tex') {
1074: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1075: if ($gradestatus !~ /^correct/) {
1076: &Apache::lonxml::get_all_text("/solved",$parser);
1077: }
1078: }
1079: return '';
1080: }
1081:
1082: sub end_solved {
1083: return '';
1084: }
1085:
1086: sub start_startouttext {
1087: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1088: my @result=(''.'');
1089: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1090: return (@result);
1091: }
1092:
1093: sub end_startouttext {
1094: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1095: my $result='';
1096: my $text='';
1097:
1098: if ($target eq 'edit') {
1099: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1100: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1101: <td>".&mt('Delete:').
1102: &Apache::edit::deletelist($target,$token)
1103: ."</td>
1104: <td>".
1105: &Apache::edit::insertlist($target,$token).
1106: &Apache::edit::end_row().
1107: &Apache::edit::start_spanning_row()."\n"
1108: . &Apache::loncommon::helpLatexCheatsheet () .
1109: &Apache::edit::editfield($token->[1],$text,"",80,4);
1110: }
1111: if ($target eq 'modified') {
1112: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1113: $result='<startouttext />'.&Apache::edit::modifiedfield();
1114: }
1115: if ($target eq 'tex') {
1116: $result .= '\noindent ';
1117: }
1118: return $result;
1119: }
1120:
1121: sub start_endouttext {
1122: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1123: my $result='';
1124: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1125: if ($target eq "modified") {
1126: $result='<endouttext />'.
1127: &Apache::edit::handle_insertafter('startouttext'); }
1128: return $result;
1129: }
1130:
1131: sub end_endouttext {
1132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1133: my @result=('','');
1134: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1135: return (@result);
1136: }
1137:
1138: sub delete_startouttext {
1139: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1140: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1141: my $text=$$parser['-1']->get_text("/endouttext");
1142: my $ntoken=$$parser['-1']->get_token();
1143: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1144: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1145: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1146: # they did the last time round
1147: &Apache::lonxml::increasedepth($ntoken);
1148: &Apache::lonxml::decreasedepth($ntoken);
1149: return 1;
1150: }
1151:
1152: sub start_simpleeditbutton {
1153: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1154: my $result='';
1155: if (($target eq 'web') &&
1156: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1157: my $url=$ENV{'REQUEST_URI'};
1158: $url=~s/\?.*$//;
1159: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1160: '<a href="'.$url.'/smpedit">'.&mt('Simple Problem Editor').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1161: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1162: }
1163: return $result;
1164: }
1165:
1166: sub end_simpleeditbutton {
1167: return '';
1168: }
1169:
1170: 1;
1171: __END__
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