File:
[LON-CAPA] /
loncom /
homework /
edit.pm
Revision
1.128:
download - view:
text,
annotated -
select for diffs
Sun Aug 8 02:00:50 2010 UTC (14 years, 1 month ago) by
raeburn
Branches:
MAIN
CVS tags:
version_2_10_0_RC1,
HEAD
- Replacement of user's environment.wysiwygeditor with link to switch to/from
CKEditor 3 Richtext editor on textareas where needed.
- Rich text editor link available for Text/HTML block in colorful editor
- Eliminate duplicate Richtext link for textarea entry fields
- "Edit Math" button hidden when richtext editor enabled - use <span> instead
of <div> for more compact display.
- Help icon for "Edit Math" hidden by switching img src from help.png to
transparent gif. Additional arg to loncommon::help_open_topic() is
imgid - id of img tag for icon associated with each "Edit Math" button.
1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.128 2010/08/08 02:00:50 raeburn 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:
29: =pod
30:
31: =head1 NAME
32:
33: Apache::edit - edit mode helpers
34:
35: =head1 SYNOPSIS
36:
37: Invoked by many homework and xml related modules.
38:
39: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
40:
41: =head1 INTRODUCTION
42:
43: This module outputs HTML syntax helpful for the rendering of edit
44: mode interfaces.
45:
46: This is part of the LearningOnline Network with CAPA project
47: described at http://www.lon-capa.org.
48:
49: =head1 SUBROUTINES
50:
51: =over 4
52:
53: =item initialize_edit()
54:
55: initialize edit (set colordepth to zero)
56:
57: =item tag_start($target,$token,$description)
58:
59: provide deletion and insertion lists
60: for the manipulation of a start tag; return a scalar string
61:
62: =item tag_end($target,$token,$description)
63:
64: ending syntax corresponding to
65: &tag_start. return a scalar string.
66:
67: =item start_table($token)
68:
69: start table; update colordepth; return scalar string.
70:
71: =item end_table()
72:
73: reduce color depth; end table; return scalar string
74:
75: =item start_spanning_row()
76:
77: start a new table row spanning the 'edit' environment.
78:
79: =item start_row()
80:
81: start a new table row and element.
82:
83: =item end_row()
84:
85: end current table element and row.
86:
87: =item movebuttons($target,$token)
88:
89: move-up and move-down buttons; return scalar string
90:
91: =item deletelist($target,$token)
92:
93: provide a yes option in an HTML select element; return scalar string
94:
95: =item handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
96: $style)
97:
98: respond to a user delete request by passing relevant stack
99: and array information to various rendering functions; return a scalar string
100:
101: =item get_insert_list($token)
102:
103: provide an insertion list based on possibilities from lonxml; return a scalar string
104:
105: =item insertlist($target,$token)
106:
107: api that uses get_insert_list; return a scalar string
108:
109: =item handleinsert($token)
110:
111: provide an insertion list based on possibilities from lonxml; return a scalar string
112:
113: =item get_insert_list($token)
114:
115: provide an insertion list based on possibilities from lonxml; return a scalar string
116:
117: =item browse($elementname)
118:
119: provide a link which will open up the filesystem browser (lonindexer) and, once a file is selected, place the result in the form element $elementname.
120:
121: =item search($elementname)
122:
123: provide a link which will open up the filesystem searcher (lonsearchcat) and, once a file is selected, place the result in the form element $elementname.
124:
125: =item editline(tag,data,description,size)
126:
127: Provide a <input type="text" ../> for single-line text entry. This is to be used for text enclosed by tags, not arguements/parameters associated with a tag.
128:
129: =back
130:
131: =cut
132:
133: package Apache::edit;
134:
135: use strict;
136: use Apache::lonnet;
137: use HTML::Entities();
138: use Apache::lonlocal;
139: use lib '/home/httpd/lib/perl/';
140: use LONCAPA;
141:
142:
143: # Global Vars
144: # default list of colors to use in editing
145: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
146: # depth of nesting of edit
147: $Apache::edit::colordepth=0;
148: @Apache::edit::inserttag=();
149: # image-type responses: active background image and curdepth at definition
150: $Apache::edit::bgimgsrc='';
151: $Apache::edit::bgimgsrccurdepth='';
152:
153: sub initialize_edit {
154: $Apache::edit::colordepth=0;
155: @Apache::edit::inserttag=();
156: }
157:
158: sub tag_start {
159: my ($target,$token,$description) = @_;
160: my $result='';
161: if ($target eq "edit") {
162: my $tag=$token->[1];
163: if (!$description) {
164: $description=&Apache::lonxml::description($token);
165: if (!$description) { $description="<$tag>"; }
166: }
167: $result.= &start_table($token)."<tr><td>$description</td>
168: <td>".&mt('Delete?').' '.
169: &deletelist($target,$token)
170: ."</td>
171: <td>".
172: &insertlist($target,$token);
173: #<td>".
174: # &movebuttons($target,$token).
175: # "</tr><tr><td colspan=\"3\">\n";
176: my @help = Apache::lonxml::helpinfo($token);
177: if ($help[0]) {
178: $result .= '</td><td align="right" valign="top">' .
179: Apache::loncommon::help_open_topic(@help);
180: } else { $result .= "</td><td> "; }
181: $result .= &end_row().&start_spanning_row();
182: }
183: return $result;
184: }
185:
186: sub tag_end {
187: my ($target,$token,$description) = @_;
188: my $result='';
189: if ($target eq 'edit') {
190: $result.="</td></tr>".&end_table()."\n";
191: }
192: return $result;
193: }
194:
195: sub start_table {
196: my ($token)=@_;
197: my $tag = &Apache::lonxml::get_tag($token);
198:
199: my $color = $Apache::lonxml::insertlist{"$tag.color"};
200: &Apache::lonxml::debug(" $tag -- $color");
201: if (!defined($color)) {
202: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
203: }
204: $Apache::edit::colordepth++;
205: push(@Apache::edit::inserttag,$token->[1]);
206: my $result='<div align="right">';
207: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="3" cellpadding="2">';
208: return $result;
209: }
210:
211: sub end_table {
212: $Apache::edit::colordepth--;
213: my $result='</table></div>';
214: $result.='<div align="left"><table><tr><td>';
215:
216: my ($tagname,$closingtag);
217: if (defined($Apache::edit::inserttag[-2])) {
218: $tagname=$Apache::edit::inserttag[-2];
219: } else {
220: if ($Apache::lonhomework::parsing_a_task) {
221: $tagname='Task';
222: } else {
223: $tagname='problem';
224: }
225: }
226: if (defined($Apache::edit::inserttag[-1])) {
227: $closingtag=$Apache::edit::inserttag[-1];
228: }
229: $result.=&innerinsertlist('edit',$tagname,$closingtag).
230: "</td></tr></table></div>";
231: my $last = pop(@Apache::edit::inserttag);
232: return $result;
233: }
234:
235: sub start_spanning_row { return '<tr><td colspan="5" bgcolor="#F0F0F0">';}
236: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
237: sub end_row { return '</td></tr>'; }
238:
239: sub movebuttons {
240: my ($target,$token) = @_;
241: my $result='<input type="submit" name="moveup.'.
242: $Apache::lonxml::curdepth.'" value="Move Up" />';
243: $result.='<input type="submit" name="movedown.'.
244: $Apache::lonxml::curdepth.'" value="Move Down" />';
245: return $result;
246: }
247:
248: sub deletelist {
249: my ($target,$token) = @_;
250: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
251: <option></option>
252: <option>".&mt('yes')."</option>
253: </select>";
254: return $result;
255: }
256:
257: sub handle_delete {
258: if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
259: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
260: my $result=0;
261: if ($space) {
262: my $sub1="$space\:\:delete_$token->[1]";
263: {
264: no strict 'refs';
265: if (defined &$sub1) {
266: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
267: }
268: }
269: }
270: if (!$result) {
271: my $endtag='/'.$token->[1];
272: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style);
273: $$parser['-1']->get_token();
274: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
275: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
276: }
277: return 1;
278: }
279:
280: sub get_insert_list {
281: my ($tagname) = @_;
282: my $result='';
283: my @tags= ();
284: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
285: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
286: push (@tags, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
287: }
288: foreach my $namespace (@Apache::lonxml::namespace) {
289: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
290: push (@tags, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
291: }
292: }
293: if (@tags) {
294: my %options;
295: foreach my $tag (@tags) {
296: my $descrip=$Apache::lonxml::insertlist{"$tag.description"};
297: my $tagnum =$Apache::lonxml::insertlist{"$tag.num"};
298: $options{$descrip} ="<option value=\"$tagnum\">".
299: $descrip."</option>\n";
300: }
301: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
302: if ($result) { $result='<option selected="selected"></option>'.$result; }
303: }
304: return $result;
305: }
306:
307: sub insertlist {
308: my ($target,$token) = @_;
309: return &innerinsertlist($target,$token->[1]);
310: }
311:
312: sub innerinsertlist {
313: my ($target,$tagname,$closingtag) = @_;
314: my $result;
315: my $after='';
316: if ($closingtag) {
317: $after='_after_'.$closingtag;
318: }
319: if ($target eq 'edit') {
320: my $optionlist= &get_insert_list($tagname);
321: if ($optionlist) {
322: $result = &mt('Insert:')."
323: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
324: $optionlist
325: </select>"
326: } else {
327: $result=" ";
328: }
329: }
330: return $result;
331: }
332:
333: sub handle_insert {
334: if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
335: my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"};
336: return &do_insert($tagnum);
337: }
338:
339: sub handle_insertafter {
340: my $tagname=shift;
341: if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '') {
342: return '';
343: }
344: my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
345: return &do_insert($tagnum,1);
346: }
347:
348: sub do_insert {
349: my ($tagnum,$after) = @_;
350: my $result;
351:
352: my $newtag = $Apache::lonxml::insertlist{"$tagnum.tag"};
353: my $func = $Apache::lonxml::insertlist{"$newtag.function"};
354: if ($func eq 'default') {
355: my $namespace;
356: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
357: my $depth = scalar(@Apache::lonxml::depthcounter);
358: $depth -- if ($after);
359: my $inset = "\t"x$depth;
360: $result.="\n$inset<$newtag></$newtag>";
361: } else {
362: if (defined(&$func)) {
363: {
364: no strict 'refs';
365: $result.=&$func();
366: }
367: } else {
368: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined. ($tagnum)");
369: }
370: }
371: return $result;
372: }
373:
374: sub insert_img {
375: return '
376: <img />';
377: }
378:
379: sub insert_responseparam {
380: return '
381: <responseparam />';
382: }
383:
384: sub insert_parameter {
385: return '
386: <parameter />';
387: }
388:
389: sub insert_formularesponse {
390: return '
391: <formularesponse answer="" samples="">
392: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
393: <textline size="25"/>
394: <hintgroup>
395: <startouttext /><endouttext />
396: </hintgroup>
397: </formularesponse>';
398: }
399:
400: sub insert_numericalresponse {
401: return '
402: <numericalresponse answer="">
403: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
404: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
405: <textline />
406: <hintgroup>
407: <startouttext /><endouttext />
408: </hintgroup>
409: </numericalresponse>';
410: }
411:
412: sub insert_customresponse {
413: return '
414: <customresponse>
415: <answer type="loncapa/perl">
416: </answer>
417: <textline />
418: <hintgroup>
419: <startouttext /><endouttext />
420: </hintgroup>
421: </customresponse>';
422: }
423:
424: sub insert_customresponse_answer {
425: return '
426: <answer type="loncapa/perl">
427: </answer>
428: ';
429: }
430:
431: sub insert_customhint {
432: return '
433: <customhint>
434: <answer type="loncapa/perl">
435: </answer>
436: </customhint>';
437: }
438:
439: sub insert_customhint_answer {
440: return '
441: <answer type="loncapa/perl">
442: </answer>
443: ';
444: }
445:
446: sub insert_mathresponse {
447: return '
448: <mathresponse>
449: <answer>
450: </answer>
451: <textline />
452: <hintgroup>
453: <startouttext />
454: <endouttext />
455: </hintgroup>
456: </mathresponse>';
457: }
458:
459: sub insert_mathresponse_answer {
460: return '
461: <answer>
462: </answer>
463: ';
464: }
465:
466: sub insert_mathhint {
467: return '
468: <mathhint>
469: <answer>
470: </answer>
471: </mathhint>';
472: }
473:
474: sub insert_mathhint_answer {
475: return '
476: <answer>
477: </answer>
478: ';
479: }
480:
481: sub insert_stringresponse {
482: return '
483: <stringresponse answer="" type="">
484: <textline />
485: <hintgroup>
486: <startouttext /><endouttext />
487: </hintgroup>
488: </stringresponse>';
489: }
490:
491: sub insert_essayresponse {
492: return '
493: <essayresponse>
494: <textfield></textfield>
495: </essayresponse>';
496: }
497:
498: sub insert_imageresponse {
499: return '
500: <imageresponse max="1">
501: <foilgroup>
502: <foil>
503: </foil>
504: </foilgroup>
505: <hintgroup>
506: <startouttext /><endouttext />
507: </hintgroup>
508: </imageresponse>';
509: }
510:
511: sub insert_optionresponse {
512: return '
513: <optionresponse max="10">
514: <foilgroup options="">
515: <foil>
516: <startouttext /><endouttext />
517: </foil>
518: </foilgroup>
519: <hintgroup>
520: <startouttext /><endouttext />
521: </hintgroup>
522: </optionresponse>';
523: }
524:
525: sub insert_organicresponse {
526: return '
527: <organicresponse>
528: <textline />
529: <hintgroup>
530: <startouttext /><endouttext />
531: </hintgroup>
532: </organicresponse>';
533: }
534:
535: sub insert_organicstructure {
536: return '
537: <organicstructure />
538: ';
539: }
540:
541: sub insert_radiobuttonresponse {
542: return '
543: <radiobuttonresponse max="10">
544: <foilgroup>
545: <foil>
546: <startouttext /><endouttext />
547: </foil>
548: </foilgroup>
549: <hintgroup>
550: <startouttext /><endouttext />
551: </hintgroup>
552: </radiobuttonresponse>';
553: }
554:
555: sub insert_reactionresponse {
556: return '
557: <reactionresponse>
558: <textline />
559: <hintgroup>
560: <startouttext /><endouttext />
561: </hintgroup>
562: </reactionresponse>';
563: }
564:
565: sub insert_rankresponse {
566: return '
567: <rankresponse max="10">
568: <foilgroup options="">
569: <foil>
570: <startouttext /><endouttext />
571: </foil>
572: </foilgroup>
573: <hintgroup>
574: <startouttext /><endouttext />
575: </hintgroup>
576: </rankresponse>';
577: }
578:
579: sub insert_matchresponse {
580: return '
581: <matchresponse max="10">
582: <foilgroup options="">
583: <itemgroup>
584: </itemgroup>
585: <foil>
586: <startouttext /><endouttext />
587: </foil>
588: </foilgroup>
589: <hintgroup>
590: <startouttext /><endouttext />
591: </hintgroup>
592: </matchresponse>';
593: }
594:
595: sub insert_startpartmarker { return '<startpartmarker />'; }
596: sub insert_endpartmarker { return '<endpartmarker />'; }
597:
598: sub insert_displayduedate { return '<displayduedate />'; }
599: sub insert_displaytitle { return '<displaytitle />'; }
600: sub insert_hintpart {
601: return '
602: <hintpart on="default">
603: <startouttext/><endouttext />
604: </hintpart>';
605: }
606:
607: sub insert_hintgroup {
608: return '
609: <hintgroup>
610: <startouttext /><endouttext />
611: </hintgroup>';
612: }
613:
614: sub insert_numericalhint {
615: return '
616: <numericalhint>
617: </numericalhint>';
618: }
619:
620: sub insert_reactionhint {
621: return '
622: <reactionhint>
623: </reactionhint>';
624: }
625:
626: sub insert_organichint {
627: return '
628: <organichint>
629: </organichint>';
630: }
631:
632: sub insert_stringhint {
633: return '
634: <stringhint>
635: </stringhint>';
636: }
637:
638: sub insert_formulahint {
639: return '
640: <formulahint>
641: </formulahint>';
642: }
643:
644: sub insert_radiobuttonhint {
645: return '
646: <radiobuttonhint>
647: </radiobuttonhint>';
648: }
649:
650: sub insert_optionhint {
651: return '
652: <optionhint>
653: </optionhint>';
654: }
655:
656: sub insert_startouttext {
657: return "<startouttext /><endouttext />";
658: }
659:
660: sub insert_script {
661: return "\n<script type=\"loncapa/perl\"></script>";
662: }
663:
664: sub js_change_detection {
665: my $unsaved=&mt("There are unsaved changes");
666: return (<<SCRIPT);
667: <script type="text/javascript">
668: var clean = true;
669: var is_submit = false;
670: var still_ask = false;
671: function compareForm(event_) {
672: if (!event_ && window.event) {
673: event_ = window.event;
674: }
675: if ((!is_submit || (is_submit && still_ask)) && !clean) {
676: still_ask = false;
677: is_submit = false;
678: event_.returnValue = "$unsaved";
679: return "$unsaved";
680: }
681: }
682: function unClean() {
683: clean=false;
684: }
685: window.onbeforeunload = compareForm;
686: </script>
687: SCRIPT
688: }
689:
690: sub form_change_detection {
691: return ' onsubmit="is_submit=true;" ';
692: }
693:
694: sub element_change_detection {
695: return ' onchange="unClean();" ';
696: }
697:
698: sub submit_ask_anyway {
699: my ($extra_action) = @_;
700: return ' onclick="still_ask=true;'.$extra_action.'" ';
701: }
702:
703: sub textarea_sizes {
704: my ($data)=@_;
705: my $count=0;
706: my $maxlength=-1;
707: foreach (split ("\n", $$data)) {
708: $count+=int(length($_)/79);
709: $count++;
710: if (length($_) > $maxlength) { $maxlength = length($_); }
711: }
712: my $rows = $count;
713: my $cols = $maxlength;
714: return ($rows,$cols);
715: }
716:
717: sub editline {
718: my ($tag,$data,$description,$size)=@_;
719: $data=&HTML::Entities::encode($data,'<>&"');
720: if ($description) { $description=$description."<br />"; }
721: my $change_code = &element_change_detection();
722: my $result = <<"END";
723: $description
724: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
725: value="$data" size="$size" $change_code />
726: END
727: return $result;
728: }
729:
730: sub editfield {
731: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
732:
733: my ($rows,$cols)=&textarea_sizes(\$data);
734: my $textareaclass;
735:
736: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
737: $rows+=7; # make room for HTMLarea
738: $minheight+=7; # make room for HTMLarea
739: $textareaclass = ' class="LC_richDefaultOff"';
740: }
741: if ($cols > 80) { $cols = 80; }
742: if ($cols < $minwidth ) { $cols = $minwidth; }
743: if ($rows < $minheight) { $rows = $minheight; }
744: if ($description) { $description=$description."<br />"; }
745:
746: # remove typesetting whitespace from between data and the end tag
747: # to make the edit look prettier
748: $data =~ s/\n?[ \t]*$//;
749:
750: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
751: '" cols="'.$cols.'" name="homework_edit_'.
752: $Apache::lonxml::curdepth.'" id="homework_edit_'.
753: $Apache::lonxml::curdepth.'" '.&element_change_detection().
754: $textareaclass.'>'.
755: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
756: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
757: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
758: }
759:
760: sub modifiedfield {
761: my ($endtag,$parser) = @_;
762: my $result;
763: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
764: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
765: # textareas throw away intial \n
766: if ($bodytext=~/^\n/) {
767: $result="\n".$result;
768: }
769: # if there is typesetting whitespace from between the data and the end tag
770: # restore to keep the source looking pretty
771: if ($bodytext =~ /(\n?[ \t]*)$/) {
772: $result .= $1;
773: }
774: return $result;
775: }
776:
777: # Returns a 1 if the token has been modified and you should rebuild the tag
778: # side-effects, will modify the $token if new values are found
779: sub get_new_args {
780: my ($token,$parstack,$safeeval,@args)=@_;
781: my $rebuild=0;
782: foreach my $arg (@args) {
783: #just want the string that it was set to
784: my $value=$token->[2]->{$arg};
785: my $element=&html_element_name($arg);
786: my $newvalue=$env{"form.$element"};
787: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
788: if (defined($newvalue) && $value ne $newvalue) {
789: if (ref($newvalue) eq 'ARRAY') {
790: $token->[2]->{$arg}=join(',',@$newvalue);
791: } else {
792: $token->[2]->{$arg}=$newvalue;
793: }
794: $rebuild=1;
795: # add new attributes to the of the attribute seq
796: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
797: push(@{ $token->[3] },$arg);
798: }
799: } elsif (!defined($newvalue) && defined($value)) {
800: delete($token->[2]->{$arg});
801: $rebuild=1;
802: }
803: }
804: return $rebuild;
805: }
806:
807: # looks for /> on start tags
808: sub rebuild_tag {
809: my ($token) = @_;
810: my $result;
811: if ($token->[0] eq 'S') {
812: $result = '<'.$token->[1];
813: foreach my $attribute (@{ $token->[3] }) {
814: my $value = $token->[2]{$attribute};
815: next if ($value eq '');
816: $value =~s/^\s+|\s+$//g;
817: $value =~s/\"//g;
818: &Apache::lonxml::debug("setting :$attribute: to :$value:");
819: $result.=' '.$attribute.'="'.$value.'"';
820: }
821: if ($token->[4] =~ m:/>$:) {
822: $result.=' />';
823: } else {
824: $result.='>';
825: }
826: } elsif ( $token->[0] eq 'E' ) {
827: $result = '</'.$token->[1].'>';
828: }
829: return $result;
830: }
831:
832: sub html_element_name {
833: my ($name) = @_;
834: return $name.'_'.$Apache::lonxml::curdepth;
835: }
836:
837: sub hidden_arg {
838: my ($name,$token) = @_;
839: my $result;
840: my $arg=$token->[2]{$name};
841: $result='<input name="'.&html_element_name($name).
842: '" type="hidden" value="'.$arg.'" />';
843: return $result;
844: }
845:
846: sub checked_arg {
847: my ($description,$name,$list,$token) = @_;
848: my $result;
849: my $optionlist="";
850: my $allselected=$token->[2]{$name};
851: $result=&mt($description);
852: foreach my $option (@$list) {
853: my ($value,$text);
854: if ( ref($option) eq 'ARRAY') {
855: $value='value="'.$$option[0].'"';
856: $text=$$option[1];
857: $option=$$option[0];
858: } else {
859: $text=$option;
860: $value='value="'.$option.'"';
861: }
862: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
863: &html_element_name($name).'"';
864: foreach my $selected (split(/,/,$allselected)) {
865: if ( $selected eq $option ) {
866: $result.=' checked="checked" ';
867: last;
868: }
869: }
870: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
871: }
872: return $result;
873: }
874:
875: sub text_arg {
876: my ($description,$name,$token,$size) = @_;
877: my $result;
878: if (!defined $size) { $size=20; }
879: my $arg=$token->[2]{$name};
880: $result=&mt($description).' <input name="'.&html_element_name($name).
881: '" type="text" value="'.$arg.'" size="'.$size.'" '.
882: &element_change_detection().'/>';
883: return '<span class="LC_nobreak">'.$result.'</span>';
884: }
885:
886: sub select_arg {
887: my ($description,$name,$list,$token) = @_;
888: my $result;
889: my $optionlist="";
890: my $selected=$token->[2]{$name};
891: if (ref($list) eq 'ARRAY') {
892: foreach my $option (@{$list}) {
893: my ($text,$value);
894: if (ref($option) eq 'ARRAY') {
895: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
896: $text=$option->[1];
897: $option=$option->[0];
898: } else {
899: $text=$option;
900: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
901: }
902: if ( $selected eq $option ) {
903: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
904: } else {
905: $optionlist.="<option $value >".&mt($text)."</option>\n";
906: }
907: }
908: }
909: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
910: &html_element_name($name).'" '.&element_change_detection().' >
911: '.$optionlist.'
912: </select></span>';
913: return $result;
914: }
915:
916: sub select_or_text_arg {
917: my ($description,$name,$list,$token,$size) = @_;
918: my $result;
919: my $optionlist="";
920: my $found=0;
921: my $selected=$token->[2]{$name};
922: if (ref($list) eq 'ARRAY') {
923: foreach my $option (@{$list}) {
924: my ($text,$value);
925: if (ref($option) eq 'ARRAY') {
926: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
927: $text=$option->[1];
928: $option=$option->[0];
929: } else {
930: $text=$option;
931: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
932: }
933: if ( $selected eq $option ) {
934: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
935: $found=1;
936: } else {
937: $optionlist.="<option $value>$text</option>\n";
938: }
939: }
940: }
941: $optionlist.="<option value=\"TYPEDINVALUE\"".
942: ((!$found)?' selected="selected"':'').
943: ">".&mt('Type-in value')."</option>\n";
944: #
945: my $change_code=&element_change_detection();
946: my $element=&html_element_name($name);
947: my $selectelement='select_list_'.$element;
948: my $typeinelement='type_in_'.$element;
949: my $typeinvalue=($found?'':$selected);
950: #
951: my $hiddenvalue='this.form.'.$element.'.value';
952: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
953: my $selectedvalue='this.form.'.$selectelement.
954: '.options['.$selectedindex.'].value';
955: my $typedinvalue='this.form.'.$typeinelement.'.value';
956: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
957: $description=&mt($description);
958: #
959: return (<<ENDSELECTORTYPE);
960: <span class="LC_nobreak">
961: $description
962: <select name="$selectelement"
963: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
964: $optionlist
965: </select>
966: <input type="text" size="$size" name="$typeinelement"
967: value="$typeinvalue"
968: onChange="$hiddenvalue=$typedinvalue;"
969: onFocus="$selectedindex=$selecttypeinindex-1;" />
970: <input type="hidden" name="$element" value="$selected" $change_code />
971: </span>
972: ENDSELECTORTYPE
973: }
974:
975: #----------------------------------------------------- image coordinates
976: # single image coordinates, x, y
977: sub entercoords {
978: my ($idx,$idy,$mode,$width,$height) = @_;
979: unless ($Apache::edit::bgimgsrc) { return ''; }
980: if ($idx) { $idx.='_'; }
981: if ($idy) { $idy.='_'; }
982: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
983: my $form = 'lonhomework';
984: my $element;
985: if (! defined($mode) || $mode eq 'attribute') {
986: $element = &escape("$Apache::lonxml::curdepth");
987: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
988: $element = &escape('homework_edit_'.
989: $Apache::lonxml::curdepth);
990: }
991: my $id=$Apache::lonxml::curdepth;
992: my %data=("imagechoice.$id.type" =>'point',
993: "imagechoice.$id.formname" =>$form,
994: "imagechoice.$id.formx" =>"$idx$element",
995: "imagechoice.$id.formy" =>"$idy$element",
996: "imagechoice.$id.file" =>$bgfile,
997: "imagechoice.$id.formcoord" =>$element);
998: if ($height) {
999: $data{"imagechoice.$id.formheight"}=$height.'_'.
1000: $Apache::edit::bgimgsrccurdepth;
1001: }
1002: if ($width) {
1003: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1004: $Apache::edit::bgimgsrccurdepth;
1005: }
1006: &Apache::lonnet::appenv(\%data);
1007: my $text="Click Coordinates";
1008: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1009: return $result;
1010: }
1011:
1012: # coordinates (x1,y1)-(x2,y2)...
1013: # mode can be either box, or polygon
1014: sub entercoord {
1015: my ($idx,$mode,$width,$height,$type) = @_;
1016: unless ($Apache::edit::bgimgsrc) { return ''; }
1017: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1018: my $form = 'lonhomework';
1019: my $element;
1020: if (! defined($mode) || $mode eq 'attribute') {
1021: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1022: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1023: $element = &escape('homework_edit_'.
1024: $Apache::lonxml::curdepth);
1025: }
1026: my $id=$Apache::lonxml::curdepth;
1027: my %data=("imagechoice.$id.type" =>$type,
1028: "imagechoice.$id.formname" =>$form,
1029: "imagechoice.$id.file" =>$bgfile,
1030: "imagechoice.$id.formcoord" =>$element);
1031: if ($height) {
1032: $data{"imagechoice.$id.formheight"}=$height.'_'.
1033: $Apache::edit::bgimgsrccurdepth;
1034: }
1035: if ($width) {
1036: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1037: $Apache::edit::bgimgsrccurdepth;
1038: }
1039: &Apache::lonnet::appenv(\%data);
1040: my $text="Enter Coordinates";
1041: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1042: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1043: return $result;
1044: }
1045:
1046: sub deletecoorddata {
1047: &Apache::lonnet::delenv('imagechoice.');
1048: }
1049:
1050: #----------------------------------------------------- browse
1051: sub browse {
1052: # insert a link to call up the filesystem browser (lonindexer)
1053: my ($id, $mode, $titleid, $only) = @_;
1054: my $form = 'lonhomework';
1055: my $element;
1056: if (! defined($mode) || $mode eq 'attribute') {
1057: $element = &escape("$id\_$Apache::lonxml::curdepth");
1058: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1059: $element = &escape('homework_edit_'.
1060: $Apache::lonxml::curdepth);
1061: }
1062: my $titleelement;
1063: if ($titleid) {
1064: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1065: } else {
1066: $titleelement=",'$only'";
1067: }
1068: my $result = <<"ENDBUTTON";
1069: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1070: ENDBUTTON
1071: return $result;
1072: }
1073:
1074: #----------------------------------------------------- browse
1075: sub search {
1076: # insert a link to call up the filesystem browser (lonindexer)
1077: my ($id, $mode, $titleid) = @_;
1078: my $form = 'lonhomework';
1079: my $element;
1080: if (! defined($mode) || $mode eq 'attribute') {
1081: $element = &escape("$id\_$Apache::lonxml::curdepth");
1082: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1083: $element = &escape('homework_edit_'.
1084: $Apache::lonxml::curdepth);
1085: }
1086: my $titleelement;
1087: if ($titleid) {
1088: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1089: }
1090: my $result = <<"ENDBUTTON";
1091: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1092: ENDBUTTON
1093: return $result;
1094: }
1095:
1096:
1097: 1;
1098: __END__
1099:
1100:
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