1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
3: #
4: # $Id: structuretags.pm,v 1.79 2002/01/30 17:37:21 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: package Apache::structuretags;
33:
34: use strict;
35: use Apache::lonnet;
36:
37: BEGIN {
38: &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
39: # &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
40: }
41:
42: sub start_web {
43: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
44: my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
45: if ($target eq 'web') {
46: return $bodytext;
47: }
48: return '';
49: }
50:
51: sub end_web {
52: return '';
53: }
54:
55: sub start_tex {
56: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
57: my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
58: if ($target eq 'tex') {
59: return $bodytext
60: }
61: return '';
62: }
63:
64: sub end_tex {
65: return '';
66: }
67:
68: sub page_start {
69: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
70: my %found;
71: foreach my $taginside ($tagstack) {
72: foreach my $taglookedfor ('html','body','form') {
73: if ($taginside =~ /^$taglookedfor$/i) { $found{$taglookedfor} = 1; }
74: }
75: }
76:
77: my $result;
78: my $head_tag_start;
79: if (!defined($found{'html'})) {
80: $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,
81: $parser,$safeeval);
82: $head_tag_start='<head>'.&Apache::lonxml::registerurl();
83: }
84: my $body_tag_start;
85: if (!defined($found{'body'})) {
86: my $body_tag_start='<body onLoad="'.&Apache::lonxml::loadevents().'" '.
87: 'onUnload="'.&Apache::lonxml::unloadevents().'" ';
88: my $background=&Apache::lonxml::get_param('background',$parstack,$safeeval);
89: if ($background) {
90: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
91: $background;
92: $body_tag_start.='background="'.$background.'" ';
93: } else {
94: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
95: if ($bgcolor) {
96: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
97: } else {
98: $body_tag_start.='bgcolor="#ffffff"';
99: }
100: }
101: $body_tag_start.='>';
102: }
103: return ($result,$head_tag_start,$body_tag_start);
104: }
105:
106: sub initialize_storage {
107: %Apache::lonhomework::results=();
108: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
109: if ($ENV{'request.state'} eq 'construct') {
110: %Apache::lonhomework::history=
111: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
112: my ($temp)=keys %Apache::lonhomework::history ;
113: &Apache::lonxml::debug("Return message of $temp");
114: } else {
115: %Apache::lonhomework::history=
116: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
117: }
118: #ignore error conditions
119: my ($temp)=keys %Apache::lonhomework::history ;
120: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
121: }
122:
123: # -------------------------------------------------------------finalize_storage
124: # Stores away the result has to a student's environment
125: # checks form.grade_ for specific values, other wises stores
126: # to the running users environment
127: sub finalize_storage {
128: my $result;
129: my ($temp) = keys %Apache::lonhomework::results;
130: if ( $temp ne '' ) {
131: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
132: if ($ENV{'request.state'} eq 'construct') {
133: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
134: $ENV{'request.uri'},'',$domain,$name);
135: &Apache::lonxml::debug('Construct Store return message:'.$result);
136: } else {
137: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
138: $symb,$courseid,$domain,$name);
139: &Apache::lonxml::debug('Store return message:'.$result);
140: }
141: }
142: return $result;
143: }
144:
145: sub checkout_msg {
146: return (<<ENDCHECKOUT);
147: <h2>The resource needs to be checked out</h2>
148: As a resource gets checked out, a unique timestamped ID is given to it, and a
149: permanent record is left in the system.<p />
150: <font color=red>
151: Checking out resources is subject to course policies, and may exclude future
152: credit even if done erroneously.<p />
153: </font>
154: <form method=post>
155: <input type=button name="doescheckout"
156: value="Check out Exam for Viewing"
157: onClick="if (confirm('Check out Exam?')) { this.form.submit(); }" />
158: </form>
159: ENDCHECKOUT
160: }
161:
162: sub start_problem {
163: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
164:
165: if ( $Apache::inputtags::part ne '' ) {
166: &Apache::lonxml::error('Only one problem allowed in a .problem file');
167: my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[-1]);
168: return '';
169: }
170: #intialize globals
171: $Apache::inputtags::part='0';
172: @Apache::inputtags::responselist = ();
173: @Apache::inputtags::previous=();
174: &initialize_storage();
175: if ($target eq 'web') {
176: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
177: }
178: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
179: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
180: if ($Apache::lonhomework::type eq '') {
181: my $uri=$ENV{'request.uri'};
182: if ($uri=~/\.(\w+)$/) {
183: $Apache::lonhomework::type=$1;
184: &Apache::lonxml::debug("Using type of $1");
185: } else {
186: $Apache::lonhomework::type='problem';
187: &Apache::lonxml::debug("Using default type, problem, :$uri:");
188: }
189: }
190:
191: #added vars to the scripting enviroment
192: my $expression='$external::part='.$Apache::inputtags::part.';';
193: &Apache::run::run($expression,$safeeval);
194: my $status;
195: my $accessmsg;
196:
197: #should get back a <html> or the neccesary stuff to start XML/MathML
198: my ($result,$head_tag_start,$body_tag_start)=
199: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
200:
201:
202: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
203: #handle exam checkout
204: if ($Apache::lonhomework::type eq 'exam') {
205: my $token=$Apache::lonhomework::history{"resource.0.outtoken"};
206: if (($ENV{'form.doescheckout'}) && (!$token)) {
207: $token=&Apache::lonxml::maketoken();
208: $Apache::lonhomework::history{"resource.0.outtoken"}=$token;
209: }
210: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
211: }
212:
213: #handle rand seed in construction space
214: my $rndseed;
215: if ($ENV{'request.state'} eq "construct") {
216: $rndseed=$ENV{'form.rndseed'};
217: if (!$rndseed) {
218: $rndseed=time;
219: $ENV{'form.rndseed'}=$rndseed;
220: }
221: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
222: }
223: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
224: push (@Apache::inputtags::status,$status);
225: my $expression='$external::datestatus="'.$status.'";';
226: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
227: &Apache::run::run($expression,$safeeval);
228: if (( $status eq 'CLOSED' ) ||
229: ( $status eq 'UNCHECKEDOUT') ||
230: ( $status eq 'BANNED')) {
231: my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
232: if ( $target eq "web" ) {
233: $result.= $head_tag_start.'</head>';
234: my $msg=$body_tag_start.
235: '<h1>Not open to be viewed</h1>';
236: if ($status eq 'CLOSED') {
237: $msg.='The problem '.$accessmsg;
238: } elsif ($status eq 'UNCHECKEDOUT') {
239: $msg.=&checkout_msg;
240: }
241: $result.=$msg.'<br />';
242: }
243: } elsif ($target eq 'web') {
244: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
245: if ($name eq '') {
246: $name=&Apache::lonnet::EXT('resource.title');
247: if ($name eq 'con_lost') { $name = ''; }
248: }
249: $Apache::lonhomework::name=$name;
250: if ($status eq 'CAN_ANSWER') {
251: # create a page header and exit
252: $result.="$head_tag_start<title>$name</title></head>\n
253: $body_tag_start\n
254: <form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">".
255: '<input type="hidden" name="submitted" value="yes" />';
256: if ($ENV{'request.state'} eq "construct") {
257: $result.=
258: '<input type="hidden" name="problemmode" value="View" />
259: <input type="submit" name="problemmode" value="Edit" />
260: <input type="submit" name="problemmode" value="EditXML" />
261: Random Seed:<input type="text" name="rndseed" width="10" value="'.
262: $rndseed.'" />
263: <input type="submit" name="changerandseed" value="Change" />
264: <input type="submit" name="resetdata" value="Reset Submissions" />
265: <hr />';
266: }
267: # if we are viewing someone else preserve that info
268: if (defined $ENV{'form.grade_symb'}) {
269: foreach my $field ('symb','courseid','domain','username') {
270: $result .= '<input type="hidden" name="grade_'.$field.
271: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
272: }
273: }
274: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
275: || $status eq 'CLOSED') {
276: $result.=$head_tag_start.
277: "<title>$name</title></head>\n$body_tag_start\n";
278: }
279: }
280: } elsif ($target eq 'edit') {
281: $result.=$head_tag_start."</head>".$body_tag_start.
282: '<form name="lonhomework" method="POST" action="'.
283: $ENV{'request.uri'}.'">
284: <input type="hidden" name="submitted" value="edit" />
285: <input type="hidden" name="problemmode" value="Edit" />
286: <input type="submit" name="problemmode" value="View" />
287: <input type="submit" name="problemmode" value="EditXML" />
288: <input type="submit" name="Undo" value="undo" /> <hr />
289: <input type="submit" name="submit" value="Submit Changes" /><br />
290: ';
291: my $temp=&Apache::edit::insertlist($target,$token);
292: $result.=$temp;
293: } elsif ($target eq 'modified') {
294: $result=$token->[4];
295: $result.=&Apache::edit::handle_insert();
296: } elsif ($target eq 'tex') {
297: $result .= '\begin{document}\noindent\textbf{Problem.}\newline';
298: } else {
299: # page_start returned a starting result, delete it if we don't need it
300: $result = '';
301: }
302: return $result;
303: }
304:
305: sub end_problem {
306: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
307: my $result='';
308: my $status=$Apache::inputtags::status['-1'];
309: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ) {
310: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
311: $status eq 'CAN_ANSWER') {
312: # if part is zero, no <part>s existed, so we need to the grading
313: &Apache::inputtags::grade;
314: } elsif ( $target eq 'web' && $Apache::inputtags::part eq '0') {
315: # if part is zero, no <part>s existed, so we need show the current
316: # grading status
317: $result.= &Apache::inputtags::gradestatus($Apache::inputtags::part);
318: }
319: if (
320: ($target eq 'web' && ($ENV{'request.state'} ne 'construct')) ||
321: ($target eq 'answer')
322: ) {
323: if ($status eq 'CAN_ANSWER') {
324: $result.="</form></body>\n";
325: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {
326: $result.="</body>\n";
327: }
328: $result.=&Apache::lonxml::xmlend();
329: }
330: if ($target eq 'grade') {
331: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
332: &finalize_storage();
333: }
334: } elsif ($target eq 'meta') {
335: if ($Apache::inputtags::part eq '0') {
336: $result=&Apache::response::mandatory_part_meta;
337: }
338: } elsif ($target eq 'edit') {
339: &Apache::lonxml::debug("in end_problem with $target, edit");
340: $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
341: } elsif ($target eq 'tex') {
342: $result .= '\end{document}';
343: }
344: return $result;
345: }
346:
347: sub start_library {
348: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
349: my ($result,$head_tag_start,$body_tag_start)=
350: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
351: if ($target eq 'edit') {
352: $result.=$head_tag_start."</head>".$body_tag_start.
353: '<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'">
354: <input type="hidden" name="submitted" value="edit" />
355: <input type="hidden" name="problemmode" value="Edit" />
356: <input type="submit" name="problemmode" value="View" />
357: <input type="submit" name="Undo" value="undo" /> <hr />
358: ';
359: my $temp=&Apache::edit::insertlist($target,$token);
360: $result.=$temp;
361: return $result;
362: }
363: if ($target eq 'modified') {
364: $result=$token->[4];
365: $result.=&Apache::edit::handle_insert();
366: return $result;
367: }
368: return '';
369: }
370:
371: sub end_library {
372: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
373: my $result='';
374: if ($target eq 'edit') {
375: $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
376: }
377: return $result;
378: }
379:
380: sub start_block {
381: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
382:
383: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
384: my $code = @$parstack[$#$parstack];
385: $code =~ s/\"//g;
386: $code .=';return $condition;';
387: # print "<br />$code<br />";
388: my $result = &Apache::run::run($code,$safeeval);
389: &Apache::lonxml::debug("block :$code: returned :$result:");
390: if ( ! $result ) {
391: my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]);
392: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[$#$parser]");
393: }
394: }
395: return "";
396: }
397:
398: sub end_block {
399: return '';
400: }
401:
402: sub start_while {
403: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
404:
405: my $code = @$parstack[$#$parstack];
406: $code =~ s/\"//g;
407: $code .=';return $condition;';
408:
409: push( @Apache::structuretags::whileconds, $code);
410: my $result = &Apache::run::run($code,$safeeval);
411: my $bodytext=$$parser[$#$parser]->get_text("/while");
412: push( @Apache::structuretags::whilebody, $bodytext);
413: if ( $result ) {
414: &Apache::lonxml::newparser($parser,\$bodytext);
415: }
416: return "";
417: }
418:
419: sub end_while {
420: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
421: my $code = pop @Apache::structuretags::whileconds;
422: my $bodytext = pop @Apache::structuretags::whilebody;
423: my $result = &Apache::run::run($code,$safeeval);
424: if ( $result ) {
425: &Apache::lonxml::newparser($parser,\$bodytext);
426: }
427: return "";
428: }
429:
430: # <randomlist>
431: # <tag1>..</tag1>
432: # <tag2>..</tag2>
433: # <tag3>..</tag3>
434: # ...
435: # </randomlist>
436: sub start_randomlist {
437: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
438: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web') {
439: my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);
440: my $b_parser= HTML::TokeParser->new(\$body);
441: my $b_tok;
442: my @randomlist;
443: my $list_item;
444: while($b_tok = $b_parser->get_token() ) {
445: if($b_tok->[0] eq 'S') { # start tag
446: # get content of the tag until matching end tag
447: # get all text upto the matching tag
448: # and push the content into @randomlist
449: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
450: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
451: push(@randomlist,$list_item);
452: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>";
453: }
454: if($b_tok->[0] eq 'T') { # text
455: # what to do with text in between tags?
456: # print "<b>TEXT $b_tok->[1]</b><br />";
457: }
458: # if($b_tok->[0] eq 'E') { # end tag, should not happen
459: # print "<b>END-TAG $b_tok->[1]</b><br />";
460: # }
461: }
462:
463: my @idx_arr = (0 .. $#randomlist);
464: &Apache::structuretags::shuffle(\@idx_arr);
465: my $bodytext = '';
466: for(0 .. $#randomlist) {
467: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
468: }
469: &Apache::lonxml::newparser($parser,\$bodytext);
470: }
471: return "";
472: }
473:
474: sub shuffle {
475: my $a=shift;
476: my $i;
477: if (defined(@$a)) {
478: &Apache::response::setrandomnumber();
479: for($i=@$a;--$i;) {
480: my $j=int rand($i+1);
481: next if $i == $j;
482: @$a[$i,$j] = @$a[$j,$i];
483: }
484: }
485: }
486:
487: sub end_randomlist {
488: return '';
489: }
490:
491: sub start_part {
492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
493: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
494: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
495: $Apache::inputtags::part=$id;
496: @Apache::inputtags::responselist = ();
497: @Apache::inputtags::previous=();
498: if ($target eq 'meta') {
499: return &Apache::response::mandatory_part_meta;
500: } elsif ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
501: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
502: push (@Apache::inputtags::status,$status);
503: my $expression='$external::datestatus="'.$status.'";';
504: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
505: &Apache::run::run($expression,$safeeval);
506: if ( $status eq 'CLOSED' ) {
507: my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]);
508: if ( $target eq "web" ) {
509: return "<br />Part is not open to be viewed. It $accessmsg<br />";
510: }
511: }
512: }
513: return '';
514: }
515:
516: sub end_part {
517: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
518: &Apache::lonxml::debug("in end_part $target ");
519: my $status=$Apache::inputtags::status['-1'];
520: pop @Apache::inputtags::status;
521: if ( $target eq 'meta' ) { return ''; }
522: if ( $target eq 'grade' && $status eq 'CAN_ANSWER') {
523: return &Apache::inputtags::grade;
524: }
525: if ($target eq 'web') {
526: return &Apache::inputtags::gradestatus($Apache::inputtags::part);
527: }
528: return '';
529: }
530:
531: sub start_preduedate {
532: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
533: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
534: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
535: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' ) {
536: &Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]);
537: }
538: }
539: return '';
540: }
541:
542: sub end_preduedate {
543: return '';
544: }
545:
546: sub start_postanswerdate {
547: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
548: if ($target eq 'web' || $target eq 'grade') {
549: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
550: &Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]);
551: }
552: }
553: return '';
554: }
555:
556: sub end_postanswerdate {
557: return '';
558: }
559:
560: sub start_notsolved {
561: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
562: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
563: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
564: &Apache::lonxml::debug("not solved has :$gradestatus:");
565: if ($gradestatus =~ /^correct/) {
566: &Apache::lonxml::debug("skipping");
567: &Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]);
568: }
569: }
570: return '';
571: }
572:
573: sub end_notsolved {
574: return '';
575: }
576:
577: sub start_solved {
578: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
579: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
580: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
581: if ($gradestatus !~ /^correct/) {
582: &Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]);
583: }
584: }
585: return '';
586: }
587:
588: sub end_solved {
589: return '';
590: }
591:
592: sub start_startouttext {
593: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
594: my @result=(''.'');
595: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
596: return (@result);
597: }
598: sub end_startouttext {
599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
600: my $result='';
601: my $text='';
602:
603: if ($target eq 'edit') {
604: $text=&Apache::lonxml::get_all_text("endouttext",$$parser[-1]);
605: $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
606: <td>Delete:".
607: &Apache::edit::deletelist($target,$token)
608: ."</td>
609: <td>".
610: &Apache::edit::insertlist($target,$token).
611: "</td>
612: </tr><tr><td colspan=\"3\">\n".
613: &Apache::edit::editfield($token->[1],$text,"",50,4);
614: }
615: if ($target eq 'modified') {
616: $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
617: $result='<startouttext />'.&Apache::edit::modifiedfield();
618: }
619: return $result;
620: }
621: sub start_endouttext {
622: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
623: my $result='';
624: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
625: if ($target eq "modified") { $result='<endouttext />'; }
626: return $result;
627: }
628: sub end_endouttext {
629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
630: my @result=('','');
631: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
632: return (@result);
633: }
634: sub delete_startouttext {
635: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
636: # my $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
637: my $text=$$parser['-1']->get_text("/endouttext");
638: my $ntoken=$$parser['-1']->get_token();
639: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
640: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
641: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
642: # they did the last time round
643: &Apache::lonxml::increasedepth($ntoken);
644: &Apache::lonxml::decreasedepth($ntoken);
645: return 1;
646: }
647:
648: 1;
649: __END__
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