1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.136 2011/11/18 16:39:22 www 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_functionplotresponse {
401: return '
402: <functionplotresponse>
403: <functionplotelements>
404: <spline />
405: </functionplotelements>
406: <functionplotruleset>
407: <functionplotrule />
408: </functionplotruleset>
409: </functionplotresponse>';
410: }
411:
412: sub insert_spline {
413: return '
414: <spline />';
415: }
416:
417: sub insert_backgroundplot {
418: return '
419: <backgroundplot />';
420: }
421:
422: sub insert_plotobject {
423: return '
424: <plotobject />';
425: }
426:
427: sub insert_plotvector {
428: return '
429: <plotvector />';
430: }
431:
432: sub insert_functionplotrule {
433: return '
434: <functionplotrule />';
435: }
436:
437: sub insert_functionplotruleset {
438: return '
439: <functionplotruleset>
440: <functionplotrule />
441: </functionplotruleset>';
442: }
443:
444: sub insert_functionplotelements {
445: return '
446: <functionplotelements>
447: <spline />
448: </functionplotelements>';
449: }
450:
451: sub insert_numericalresponse {
452: return '
453: <numericalresponse answer="">
454: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
455: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
456: <textline />
457: <hintgroup>
458: <startouttext /><endouttext />
459: </hintgroup>
460: </numericalresponse>';
461: }
462:
463: sub insert_customresponse {
464: return '
465: <customresponse>
466: <answer type="loncapa/perl">
467: </answer>
468: <textline />
469: <hintgroup>
470: <startouttext /><endouttext />
471: </hintgroup>
472: </customresponse>';
473: }
474:
475: sub insert_customresponse_answer {
476: return '
477: <answer type="loncapa/perl">
478: </answer>
479: ';
480: }
481:
482: sub insert_customhint {
483: return '
484: <customhint>
485: <answer type="loncapa/perl">
486: </answer>
487: </customhint>';
488: }
489:
490: sub insert_customhint_answer {
491: return '
492: <answer type="loncapa/perl">
493: </answer>
494: ';
495: }
496:
497: sub insert_mathresponse {
498: return '
499: <mathresponse>
500: <answer>
501: </answer>
502: <textline />
503: <hintgroup>
504: <startouttext />
505: <endouttext />
506: </hintgroup>
507: </mathresponse>';
508: }
509:
510: sub insert_mathresponse_answer {
511: return '
512: <answer>
513: </answer>
514: ';
515: }
516:
517: sub insert_mathhint {
518: return '
519: <mathhint>
520: <answer>
521: </answer>
522: </mathhint>';
523: }
524:
525: sub insert_mathhint_answer {
526: return '
527: <answer>
528: </answer>
529: ';
530: }
531:
532: sub insert_stringresponse {
533: return '
534: <stringresponse answer="" type="">
535: <textline />
536: <hintgroup>
537: <startouttext /><endouttext />
538: </hintgroup>
539: </stringresponse>';
540: }
541:
542: sub insert_essayresponse {
543: return '
544: <essayresponse>
545: <textfield></textfield>
546: </essayresponse>';
547: }
548:
549: sub insert_imageresponse {
550: return '
551: <imageresponse max="1">
552: <foilgroup>
553: <foil>
554: </foil>
555: </foilgroup>
556: <hintgroup>
557: <startouttext /><endouttext />
558: </hintgroup>
559: </imageresponse>';
560: }
561:
562: sub insert_optionresponse {
563: return '
564: <optionresponse max="10">
565: <foilgroup options="">
566: <foil>
567: <startouttext /><endouttext />
568: </foil>
569: </foilgroup>
570: <hintgroup>
571: <startouttext /><endouttext />
572: </hintgroup>
573: </optionresponse>';
574: }
575:
576: sub insert_organicresponse {
577: return '
578: <organicresponse>
579: <textline />
580: <hintgroup>
581: <startouttext /><endouttext />
582: </hintgroup>
583: </organicresponse>';
584: }
585:
586: sub insert_organicstructure {
587: return '
588: <organicstructure />
589: ';
590: }
591:
592: sub insert_radiobuttonresponse {
593: return '
594: <radiobuttonresponse max="10">
595: <foilgroup>
596: <foil>
597: <startouttext /><endouttext />
598: </foil>
599: </foilgroup>
600: <hintgroup>
601: <startouttext /><endouttext />
602: </hintgroup>
603: </radiobuttonresponse>';
604: }
605:
606: sub insert_reactionresponse {
607: return '
608: <reactionresponse>
609: <textline />
610: <hintgroup>
611: <startouttext /><endouttext />
612: </hintgroup>
613: </reactionresponse>';
614: }
615:
616: sub insert_rankresponse {
617: return '
618: <rankresponse max="10">
619: <foilgroup options="">
620: <foil>
621: <startouttext /><endouttext />
622: </foil>
623: </foilgroup>
624: <hintgroup>
625: <startouttext /><endouttext />
626: </hintgroup>
627: </rankresponse>';
628: }
629:
630: sub insert_matchresponse {
631: return '
632: <matchresponse max="10">
633: <foilgroup options="">
634: <itemgroup>
635: </itemgroup>
636: <foil>
637: <startouttext /><endouttext />
638: </foil>
639: </foilgroup>
640: <hintgroup>
641: <startouttext /><endouttext />
642: </hintgroup>
643: </matchresponse>';
644: }
645:
646: sub insert_startpartmarker { return '<startpartmarker />'; }
647: sub insert_endpartmarker { return '<endpartmarker />'; }
648:
649: sub insert_displayduedate { return '<displayduedate />'; }
650: sub insert_displaytitle { return '<displaytitle />'; }
651: sub insert_hintpart {
652: return '
653: <hintpart on="default">
654: <startouttext/><endouttext />
655: </hintpart>';
656: }
657:
658: sub insert_hintgroup {
659: return '
660: <hintgroup>
661: <startouttext /><endouttext />
662: </hintgroup>';
663: }
664:
665: sub insert_numericalhint {
666: return '
667: <numericalhint>
668: </numericalhint>';
669: }
670:
671: sub insert_reactionhint {
672: return '
673: <reactionhint>
674: </reactionhint>';
675: }
676:
677: sub insert_organichint {
678: return '
679: <organichint>
680: </organichint>';
681: }
682:
683: sub insert_stringhint {
684: return '
685: <stringhint>
686: </stringhint>';
687: }
688:
689: sub insert_formulahint {
690: return '
691: <formulahint>
692: </formulahint>';
693: }
694:
695: sub insert_radiobuttonhint {
696: return '
697: <radiobuttonhint>
698: </radiobuttonhint>';
699: }
700:
701: sub insert_optionhint {
702: return '
703: <optionhint>
704: </optionhint>';
705: }
706:
707: sub insert_startouttext {
708: return "<startouttext /><endouttext />";
709: }
710:
711: sub insert_script {
712: return "\n<script type=\"loncapa/perl\"></script>";
713: }
714:
715: sub js_change_detection {
716: my $unsaved=&mt("There are unsaved changes");
717: return (<<SCRIPT);
718: <script type="text/javascript">
719: var clean = true;
720: var is_submit = false;
721: var still_ask = false;
722: function compareForm(event_) {
723: if (!event_ && window.event) {
724: event_ = window.event;
725: }
726: if ((!is_submit || (is_submit && still_ask)) && !clean) {
727: still_ask = false;
728: is_submit = false;
729: event_.returnValue = "$unsaved";
730: return "$unsaved";
731: }
732: }
733: function unClean() {
734: clean=false;
735: }
736: window.onbeforeunload = compareForm;
737: </script>
738: SCRIPT
739: }
740:
741: sub form_change_detection {
742: return ' onsubmit="is_submit=true;" ';
743: }
744:
745: sub element_change_detection {
746: return ' onchange="unClean();" ';
747: }
748:
749: sub submit_ask_anyway {
750: my ($extra_action) = @_;
751: return ' onclick="still_ask=true;'.$extra_action.'" ';
752: }
753:
754: sub submit_dont_ask {
755: my ($extra_action) = @_;
756: return ' onclick="is_submit=true;'.$extra_action.'" ';
757: }
758:
759:
760: sub textarea_sizes {
761: my ($data)=@_;
762: my $count=0;
763: my $maxlength=-1;
764: foreach (split ("\n", $$data)) {
765: $count+=int(length($_)/79);
766: $count++;
767: if (length($_) > $maxlength) { $maxlength = length($_); }
768: }
769: my $rows = $count;
770: my $cols = $maxlength;
771: return ($rows,$cols);
772: }
773:
774: sub editline {
775: my ($tag,$data,$description,$size)=@_;
776: $data=&HTML::Entities::encode($data,'<>&"');
777: if ($description) { $description=$description."<br />"; }
778: my $change_code = &element_change_detection();
779: my $result = <<"END";
780: $description
781: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
782: value="$data" size="$size" $change_code />
783: END
784: return $result;
785: }
786:
787: sub editfield {
788: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
789:
790: my ($rows,$cols)=&textarea_sizes(\$data);
791: my $textareaclass;
792:
793: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
794: $rows+=7; # make room for HTMLarea
795: $minheight+=7; # make room for HTMLarea
796: $textareaclass = ' class="LC_richDefaultOff"';
797: }
798: if ($cols > 80) { $cols = 80; }
799: if ($cols < $minwidth ) { $cols = $minwidth; }
800: if ($rows < $minheight) { $rows = $minheight; }
801: if ($description) { $description=$description."<br />"; }
802:
803: # remove typesetting whitespace from between data and the end tag
804: # to make the edit look prettier
805: $data =~ s/\n?[ \t]*$//;
806:
807: return $description."\n".'<textarea style="width:99%" rows="'.$rows.
808: '" cols="'.$cols.'" name="homework_edit_'.
809: $Apache::lonxml::curdepth.'" id="homework_edit_'.
810: $Apache::lonxml::curdepth.'" '.&element_change_detection().
811: $textareaclass.'>'.
812: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
813: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
814: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
815: }
816:
817: sub modifiedfield {
818: my ($endtag,$parser) = @_;
819: my $result;
820: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
821: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
822: # textareas throw away intial \n
823: if ($bodytext=~/^\n/) {
824: $result="\n".$result;
825: }
826: # if there is typesetting whitespace from between the data and the end tag
827: # restore to keep the source looking pretty
828: if ($bodytext =~ /(\n?[ \t]*)$/) {
829: $result .= $1;
830: }
831: return $result;
832: }
833:
834: # Returns a 1 if the token has been modified and you should rebuild the tag
835: # side-effects, will modify the $token if new values are found
836: sub get_new_args {
837: my ($token,$parstack,$safeeval,@args)=@_;
838: my $rebuild=0;
839: foreach my $arg (@args) {
840: #just want the string that it was set to
841: my $value=$token->[2]->{$arg};
842: my $element=&html_element_name($arg);
843: my $newvalue=$env{"form.$element"};
844: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
845: if (defined($newvalue) && $value ne $newvalue) {
846: if (ref($newvalue) eq 'ARRAY') {
847: $token->[2]->{$arg}=join(',',@$newvalue);
848: } else {
849: $token->[2]->{$arg}=$newvalue;
850: }
851: $rebuild=1;
852: # add new attributes to the of the attribute seq
853: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
854: push(@{ $token->[3] },$arg);
855: }
856: } elsif (!defined($newvalue) && defined($value)) {
857: delete($token->[2]->{$arg});
858: $rebuild=1;
859: }
860: }
861: return $rebuild;
862: }
863:
864: # looks for /> on start tags
865: sub rebuild_tag {
866: my ($token) = @_;
867: my $result;
868: if ($token->[0] eq 'S') {
869: $result = '<'.$token->[1];
870: foreach my $attribute (@{ $token->[3] }) {
871: my $value = $token->[2]{$attribute};
872: next if ($value eq '');
873: $value =~s/^\s+|\s+$//g;
874: $value =~s/\"//g;
875: &Apache::lonxml::debug("setting :$attribute: to :$value:");
876: $result.=' '.$attribute.'="'.$value.'"';
877: }
878: if ($token->[4] =~ m:/>$:) {
879: $result.=' />';
880: } else {
881: $result.='>';
882: }
883: } elsif ( $token->[0] eq 'E' ) {
884: $result = '</'.$token->[1].'>';
885: }
886: return $result;
887: }
888:
889: sub html_element_name {
890: my ($name) = @_;
891: return $name.'_'.$Apache::lonxml::curdepth;
892: }
893:
894: sub hidden_arg {
895: my ($name,$token) = @_;
896: my $result;
897: my $arg=$token->[2]{$name};
898: $result='<input name="'.&html_element_name($name).
899: '" type="hidden" value="'.$arg.'" />';
900: return $result;
901: }
902:
903: sub checked_arg {
904: my ($description,$name,$list,$token) = @_;
905: my $result;
906: my $optionlist="";
907: my $allselected=$token->[2]{$name};
908: $result=&mt($description);
909: foreach my $option (@$list) {
910: my ($value,$text);
911: if ( ref($option) eq 'ARRAY') {
912: $value='value="'.$$option[0].'"';
913: $text=$$option[1];
914: $option=$$option[0];
915: } else {
916: $text=$option;
917: $value='value="'.$option.'"';
918: }
919: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
920: &html_element_name($name).'"';
921: foreach my $selected (split(/,/,$allselected)) {
922: if ( $selected eq $option ) {
923: $result.=' checked="checked" ';
924: last;
925: }
926: }
927: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
928: }
929: return $result;
930: }
931:
932: sub text_arg {
933: my ($description,$name,$token,$size) = @_;
934: my $result;
935: if (!defined $size) { $size=20; }
936: my $arg=$token->[2]{$name};
937: $result=&mt($description).' <input name="'.&html_element_name($name).
938: '" type="text" value="'.$arg.'" size="'.$size.'" '.
939: &element_change_detection().'/>';
940: return '<span class="LC_nobreak">'.$result.'</span>';
941: }
942:
943: sub select_arg {
944: my ($description,$name,$list,$token) = @_;
945: my $result;
946: my $optionlist="";
947: my $selected=$token->[2]{$name};
948: if (ref($list) eq 'ARRAY') {
949: foreach my $option (@{$list}) {
950: my ($text,$value);
951: if (ref($option) eq 'ARRAY') {
952: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
953: $text=$option->[1];
954: $option=$option->[0];
955: } else {
956: $text=$option;
957: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
958: }
959: if ( $selected eq $option ) {
960: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
961: } else {
962: $optionlist.="<option $value >".&mt($text)."</option>\n";
963: }
964: }
965: }
966: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
967: &html_element_name($name).'" '.&element_change_detection().' >
968: '.$optionlist.'
969: </select></span>';
970: return $result;
971: }
972:
973: sub select_or_text_arg {
974: my ($description,$name,$list,$token,$size) = @_;
975: my $result;
976: my $optionlist="";
977: my $found=0;
978: my $selected=$token->[2]{$name};
979: if (ref($list) eq 'ARRAY') {
980: foreach my $option (@{$list}) {
981: my ($text,$value);
982: if (ref($option) eq 'ARRAY') {
983: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
984: $text=$option->[1];
985: $option=$option->[0];
986: } else {
987: $text=$option;
988: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
989: }
990: if ( $selected eq $option ) {
991: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
992: $found=1;
993: } else {
994: $optionlist.="<option $value>$text</option>\n";
995: }
996: }
997: }
998: $optionlist.="<option value=\"TYPEDINVALUE\"".
999: ((!$found)?' selected="selected"':'').
1000: ">".&mt('Type-in value')."</option>\n";
1001: #
1002: my $change_code=&element_change_detection();
1003: my $element=&html_element_name($name);
1004: my $selectelement='select_list_'.$element;
1005: my $typeinelement='type_in_'.$element;
1006: my $typeinvalue=($found?'':$selected);
1007: #
1008: my $hiddenvalue='this.form.'.$element.'.value';
1009: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
1010: my $selectedvalue='this.form.'.$selectelement.
1011: '.options['.$selectedindex.'].value';
1012: my $typedinvalue='this.form.'.$typeinelement.'.value';
1013: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
1014: $description=&mt($description);
1015: #
1016: return (<<ENDSELECTORTYPE);
1017: <span class="LC_nobreak">
1018: $description
1019: <select name="$selectelement"
1020: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
1021: $optionlist
1022: </select>
1023: <input type="text" size="$size" name="$typeinelement"
1024: value="$typeinvalue"
1025: onChange="$hiddenvalue=$typedinvalue;"
1026: onFocus="$selectedindex=$selecttypeinindex-1;" />
1027: <input type="hidden" name="$element" value="$selected" $change_code />
1028: </span>
1029: ENDSELECTORTYPE
1030: }
1031:
1032: #----------------------------------------------------- image coordinates
1033: # single image coordinates, x, y
1034: sub entercoords {
1035: my ($idx,$idy,$mode,$width,$height) = @_;
1036: unless ($Apache::edit::bgimgsrc) { return ''; }
1037: if ($idx) { $idx.='_'; }
1038: if ($idy) { $idy.='_'; }
1039: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1040: my $form = 'lonhomework';
1041: my $element;
1042: if (! defined($mode) || $mode eq 'attribute') {
1043: $element = &escape("$Apache::lonxml::curdepth");
1044: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1045: $element = &escape('homework_edit_'.
1046: $Apache::lonxml::curdepth);
1047: }
1048: my $id=$Apache::lonxml::curdepth;
1049: my %data=("imagechoice.$id.type" =>'point',
1050: "imagechoice.$id.formname" =>$form,
1051: "imagechoice.$id.formx" =>"$idx$element",
1052: "imagechoice.$id.formy" =>"$idy$element",
1053: "imagechoice.$id.file" =>$bgfile,
1054: "imagechoice.$id.formcoord" =>$element);
1055: if ($height) {
1056: $data{"imagechoice.$id.formheight"}=$height.'_'.
1057: $Apache::edit::bgimgsrccurdepth;
1058: }
1059: if ($width) {
1060: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1061: $Apache::edit::bgimgsrccurdepth;
1062: }
1063: &Apache::lonnet::appenv(\%data);
1064: my $text="Click Coordinates";
1065: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1066: return $result;
1067: }
1068:
1069: # coordinates (x1,y1)-(x2,y2)...
1070: # mode can be either box, or polygon
1071: sub entercoord {
1072: my ($idx,$mode,$width,$height,$type) = @_;
1073: unless ($Apache::edit::bgimgsrc) { return ''; }
1074: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1075: my $form = 'lonhomework';
1076: my $element;
1077: if (! defined($mode) || $mode eq 'attribute') {
1078: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1079: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1080: $element = &escape('homework_edit_'.
1081: $Apache::lonxml::curdepth);
1082: }
1083: my $id=$Apache::lonxml::curdepth;
1084: my %data=("imagechoice.$id.type" =>$type,
1085: "imagechoice.$id.formname" =>$form,
1086: "imagechoice.$id.file" =>$bgfile,
1087: "imagechoice.$id.formcoord" =>$element);
1088: if ($height) {
1089: $data{"imagechoice.$id.formheight"}=$height.'_'.
1090: $Apache::edit::bgimgsrccurdepth;
1091: }
1092: if ($width) {
1093: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1094: $Apache::edit::bgimgsrccurdepth;
1095: }
1096: &Apache::lonnet::appenv(\%data);
1097: my $text="Enter Coordinates";
1098: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1099: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1100: return $result;
1101: }
1102:
1103: sub deletecoorddata {
1104: &Apache::lonnet::delenv('imagechoice.');
1105: }
1106:
1107: #----------------------------------------------------- browse
1108: sub browse {
1109: # insert a link to call up the filesystem browser (lonindexer)
1110: my ($id, $mode, $titleid, $only) = @_;
1111: my $form = 'lonhomework';
1112: my $element;
1113: if (! defined($mode) || $mode eq 'attribute') {
1114: $element = &escape("$id\_$Apache::lonxml::curdepth");
1115: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1116: $element = &escape('homework_edit_'.
1117: $Apache::lonxml::curdepth);
1118: }
1119: my $titleelement;
1120: if ($titleid) {
1121: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1122: } else {
1123: $titleelement=",'$only'";
1124: }
1125: my $result = <<"ENDBUTTON";
1126: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1127: ENDBUTTON
1128: return $result;
1129: }
1130:
1131: #----------------------------------------------------- browse
1132: sub search {
1133: # insert a link to call up the filesystem browser (lonindexer)
1134: my ($id, $mode, $titleid) = @_;
1135: my $form = 'lonhomework';
1136: my $element;
1137: if (! defined($mode) || $mode eq 'attribute') {
1138: $element = &escape("$id\_$Apache::lonxml::curdepth");
1139: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1140: $element = &escape('homework_edit_'.
1141: $Apache::lonxml::curdepth);
1142: }
1143: my $titleelement;
1144: if ($titleid) {
1145: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1146: }
1147: my $result = <<"ENDBUTTON";
1148: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1149: ENDBUTTON
1150: return $result;
1151: }
1152:
1153:
1154: 1;
1155: __END__
1156:
1157:
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