1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.137 2011/11/19 13:45:36 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_functionplotvectorrule {
438: return '
439: <functionplotvectorrule />';
440: }
441:
442: sub insert_functionplotvectorsumrule {
443: return '
444: <functionplotvectorsumrule />';
445: }
446:
447: sub insert_functionplotruleset {
448: return '
449: <functionplotruleset>
450: <functionplotrule />
451: </functionplotruleset>';
452: }
453:
454: sub insert_functionplotelements {
455: return '
456: <functionplotelements>
457: <spline />
458: </functionplotelements>';
459: }
460:
461: sub insert_numericalresponse {
462: return '
463: <numericalresponse answer="">
464: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
465: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
466: <textline />
467: <hintgroup>
468: <startouttext /><endouttext />
469: </hintgroup>
470: </numericalresponse>';
471: }
472:
473: sub insert_customresponse {
474: return '
475: <customresponse>
476: <answer type="loncapa/perl">
477: </answer>
478: <textline />
479: <hintgroup>
480: <startouttext /><endouttext />
481: </hintgroup>
482: </customresponse>';
483: }
484:
485: sub insert_customresponse_answer {
486: return '
487: <answer type="loncapa/perl">
488: </answer>
489: ';
490: }
491:
492: sub insert_customhint {
493: return '
494: <customhint>
495: <answer type="loncapa/perl">
496: </answer>
497: </customhint>';
498: }
499:
500: sub insert_customhint_answer {
501: return '
502: <answer type="loncapa/perl">
503: </answer>
504: ';
505: }
506:
507: sub insert_mathresponse {
508: return '
509: <mathresponse>
510: <answer>
511: </answer>
512: <textline />
513: <hintgroup>
514: <startouttext />
515: <endouttext />
516: </hintgroup>
517: </mathresponse>';
518: }
519:
520: sub insert_mathresponse_answer {
521: return '
522: <answer>
523: </answer>
524: ';
525: }
526:
527: sub insert_mathhint {
528: return '
529: <mathhint>
530: <answer>
531: </answer>
532: </mathhint>';
533: }
534:
535: sub insert_mathhint_answer {
536: return '
537: <answer>
538: </answer>
539: ';
540: }
541:
542: sub insert_stringresponse {
543: return '
544: <stringresponse answer="" type="">
545: <textline />
546: <hintgroup>
547: <startouttext /><endouttext />
548: </hintgroup>
549: </stringresponse>';
550: }
551:
552: sub insert_essayresponse {
553: return '
554: <essayresponse>
555: <textfield></textfield>
556: </essayresponse>';
557: }
558:
559: sub insert_imageresponse {
560: return '
561: <imageresponse max="1">
562: <foilgroup>
563: <foil>
564: </foil>
565: </foilgroup>
566: <hintgroup>
567: <startouttext /><endouttext />
568: </hintgroup>
569: </imageresponse>';
570: }
571:
572: sub insert_optionresponse {
573: return '
574: <optionresponse max="10">
575: <foilgroup options="">
576: <foil>
577: <startouttext /><endouttext />
578: </foil>
579: </foilgroup>
580: <hintgroup>
581: <startouttext /><endouttext />
582: </hintgroup>
583: </optionresponse>';
584: }
585:
586: sub insert_organicresponse {
587: return '
588: <organicresponse>
589: <textline />
590: <hintgroup>
591: <startouttext /><endouttext />
592: </hintgroup>
593: </organicresponse>';
594: }
595:
596: sub insert_organicstructure {
597: return '
598: <organicstructure />
599: ';
600: }
601:
602: sub insert_radiobuttonresponse {
603: return '
604: <radiobuttonresponse max="10">
605: <foilgroup>
606: <foil>
607: <startouttext /><endouttext />
608: </foil>
609: </foilgroup>
610: <hintgroup>
611: <startouttext /><endouttext />
612: </hintgroup>
613: </radiobuttonresponse>';
614: }
615:
616: sub insert_reactionresponse {
617: return '
618: <reactionresponse>
619: <textline />
620: <hintgroup>
621: <startouttext /><endouttext />
622: </hintgroup>
623: </reactionresponse>';
624: }
625:
626: sub insert_rankresponse {
627: return '
628: <rankresponse max="10">
629: <foilgroup options="">
630: <foil>
631: <startouttext /><endouttext />
632: </foil>
633: </foilgroup>
634: <hintgroup>
635: <startouttext /><endouttext />
636: </hintgroup>
637: </rankresponse>';
638: }
639:
640: sub insert_matchresponse {
641: return '
642: <matchresponse max="10">
643: <foilgroup options="">
644: <itemgroup>
645: </itemgroup>
646: <foil>
647: <startouttext /><endouttext />
648: </foil>
649: </foilgroup>
650: <hintgroup>
651: <startouttext /><endouttext />
652: </hintgroup>
653: </matchresponse>';
654: }
655:
656: sub insert_startpartmarker { return '<startpartmarker />'; }
657: sub insert_endpartmarker { return '<endpartmarker />'; }
658:
659: sub insert_displayduedate { return '<displayduedate />'; }
660: sub insert_displaytitle { return '<displaytitle />'; }
661: sub insert_hintpart {
662: return '
663: <hintpart on="default">
664: <startouttext/><endouttext />
665: </hintpart>';
666: }
667:
668: sub insert_hintgroup {
669: return '
670: <hintgroup>
671: <startouttext /><endouttext />
672: </hintgroup>';
673: }
674:
675: sub insert_numericalhint {
676: return '
677: <numericalhint>
678: </numericalhint>';
679: }
680:
681: sub insert_reactionhint {
682: return '
683: <reactionhint>
684: </reactionhint>';
685: }
686:
687: sub insert_organichint {
688: return '
689: <organichint>
690: </organichint>';
691: }
692:
693: sub insert_stringhint {
694: return '
695: <stringhint>
696: </stringhint>';
697: }
698:
699: sub insert_formulahint {
700: return '
701: <formulahint>
702: </formulahint>';
703: }
704:
705: sub insert_radiobuttonhint {
706: return '
707: <radiobuttonhint>
708: </radiobuttonhint>';
709: }
710:
711: sub insert_optionhint {
712: return '
713: <optionhint>
714: </optionhint>';
715: }
716:
717: sub insert_startouttext {
718: return "<startouttext /><endouttext />";
719: }
720:
721: sub insert_script {
722: return "\n<script type=\"loncapa/perl\"></script>";
723: }
724:
725: sub js_change_detection {
726: my $unsaved=&mt("There are unsaved changes");
727: return (<<SCRIPT);
728: <script type="text/javascript">
729: var clean = true;
730: var is_submit = false;
731: var still_ask = false;
732: function compareForm(event_) {
733: if (!event_ && window.event) {
734: event_ = window.event;
735: }
736: if ((!is_submit || (is_submit && still_ask)) && !clean) {
737: still_ask = false;
738: is_submit = false;
739: event_.returnValue = "$unsaved";
740: return "$unsaved";
741: }
742: }
743: function unClean() {
744: clean=false;
745: }
746: window.onbeforeunload = compareForm;
747: </script>
748: SCRIPT
749: }
750:
751: sub form_change_detection {
752: return ' onsubmit="is_submit=true;" ';
753: }
754:
755: sub element_change_detection {
756: return ' onchange="unClean();" ';
757: }
758:
759: sub submit_ask_anyway {
760: my ($extra_action) = @_;
761: return ' onclick="still_ask=true;'.$extra_action.'" ';
762: }
763:
764: sub submit_dont_ask {
765: my ($extra_action) = @_;
766: return ' onclick="is_submit=true;'.$extra_action.'" ';
767: }
768:
769:
770: sub textarea_sizes {
771: my ($data)=@_;
772: my $count=0;
773: my $maxlength=-1;
774: foreach (split ("\n", $$data)) {
775: $count+=int(length($_)/79);
776: $count++;
777: if (length($_) > $maxlength) { $maxlength = length($_); }
778: }
779: my $rows = $count;
780: my $cols = $maxlength;
781: return ($rows,$cols);
782: }
783:
784: sub editline {
785: my ($tag,$data,$description,$size)=@_;
786: $data=&HTML::Entities::encode($data,'<>&"');
787: if ($description) { $description=$description."<br />"; }
788: my $change_code = &element_change_detection();
789: my $result = <<"END";
790: $description
791: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
792: value="$data" size="$size" $change_code />
793: END
794: return $result;
795: }
796:
797: sub editfield {
798: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
799:
800: my ($rows,$cols)=&textarea_sizes(\$data);
801: my $textareaclass;
802:
803: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
804: $rows+=7; # make room for HTMLarea
805: $minheight+=7; # make room for HTMLarea
806: $textareaclass = ' class="LC_richDefaultOff"';
807: }
808: if ($cols > 80) { $cols = 80; }
809: if ($cols < $minwidth ) { $cols = $minwidth; }
810: if ($rows < $minheight) { $rows = $minheight; }
811: if ($description) { $description=$description."<br />"; }
812:
813: # remove typesetting whitespace from between data and the end tag
814: # to make the edit look prettier
815: $data =~ s/\n?[ \t]*$//;
816:
817: return $description."\n".'<textarea style="width:99%" rows="'.$rows.
818: '" cols="'.$cols.'" name="homework_edit_'.
819: $Apache::lonxml::curdepth.'" id="homework_edit_'.
820: $Apache::lonxml::curdepth.'" '.&element_change_detection().
821: $textareaclass.'>'.
822: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
823: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
824: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
825: }
826:
827: sub modifiedfield {
828: my ($endtag,$parser) = @_;
829: my $result;
830: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
831: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
832: # textareas throw away intial \n
833: if ($bodytext=~/^\n/) {
834: $result="\n".$result;
835: }
836: # if there is typesetting whitespace from between the data and the end tag
837: # restore to keep the source looking pretty
838: if ($bodytext =~ /(\n?[ \t]*)$/) {
839: $result .= $1;
840: }
841: return $result;
842: }
843:
844: # Returns a 1 if the token has been modified and you should rebuild the tag
845: # side-effects, will modify the $token if new values are found
846: sub get_new_args {
847: my ($token,$parstack,$safeeval,@args)=@_;
848: my $rebuild=0;
849: foreach my $arg (@args) {
850: #just want the string that it was set to
851: my $value=$token->[2]->{$arg};
852: my $element=&html_element_name($arg);
853: my $newvalue=$env{"form.$element"};
854: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
855: if (defined($newvalue) && $value ne $newvalue) {
856: if (ref($newvalue) eq 'ARRAY') {
857: $token->[2]->{$arg}=join(',',@$newvalue);
858: } else {
859: $token->[2]->{$arg}=$newvalue;
860: }
861: $rebuild=1;
862: # add new attributes to the of the attribute seq
863: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
864: push(@{ $token->[3] },$arg);
865: }
866: } elsif (!defined($newvalue) && defined($value)) {
867: delete($token->[2]->{$arg});
868: $rebuild=1;
869: }
870: }
871: return $rebuild;
872: }
873:
874: # looks for /> on start tags
875: sub rebuild_tag {
876: my ($token) = @_;
877: my $result;
878: if ($token->[0] eq 'S') {
879: $result = '<'.$token->[1];
880: foreach my $attribute (@{ $token->[3] }) {
881: my $value = $token->[2]{$attribute};
882: next if ($value eq '');
883: $value =~s/^\s+|\s+$//g;
884: $value =~s/\"//g;
885: &Apache::lonxml::debug("setting :$attribute: to :$value:");
886: $result.=' '.$attribute.'="'.$value.'"';
887: }
888: if ($token->[4] =~ m:/>$:) {
889: $result.=' />';
890: } else {
891: $result.='>';
892: }
893: } elsif ( $token->[0] eq 'E' ) {
894: $result = '</'.$token->[1].'>';
895: }
896: return $result;
897: }
898:
899: sub html_element_name {
900: my ($name) = @_;
901: return $name.'_'.$Apache::lonxml::curdepth;
902: }
903:
904: sub hidden_arg {
905: my ($name,$token) = @_;
906: my $result;
907: my $arg=$token->[2]{$name};
908: $result='<input name="'.&html_element_name($name).
909: '" type="hidden" value="'.$arg.'" />';
910: return $result;
911: }
912:
913: sub checked_arg {
914: my ($description,$name,$list,$token) = @_;
915: my $result;
916: my $optionlist="";
917: my $allselected=$token->[2]{$name};
918: $result=&mt($description);
919: foreach my $option (@$list) {
920: my ($value,$text);
921: if ( ref($option) eq 'ARRAY') {
922: $value='value="'.$$option[0].'"';
923: $text=$$option[1];
924: $option=$$option[0];
925: } else {
926: $text=$option;
927: $value='value="'.$option.'"';
928: }
929: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
930: &html_element_name($name).'"';
931: foreach my $selected (split(/,/,$allselected)) {
932: if ( $selected eq $option ) {
933: $result.=' checked="checked" ';
934: last;
935: }
936: }
937: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
938: }
939: return $result;
940: }
941:
942: sub text_arg {
943: my ($description,$name,$token,$size) = @_;
944: my $result;
945: if (!defined $size) { $size=20; }
946: my $arg=$token->[2]{$name};
947: $result=&mt($description).' <input name="'.&html_element_name($name).
948: '" type="text" value="'.$arg.'" size="'.$size.'" '.
949: &element_change_detection().'/>';
950: return '<span class="LC_nobreak">'.$result.'</span>';
951: }
952:
953: sub select_arg {
954: my ($description,$name,$list,$token) = @_;
955: my $result;
956: my $optionlist="";
957: my $selected=$token->[2]{$name};
958: if (ref($list) eq 'ARRAY') {
959: foreach my $option (@{$list}) {
960: my ($text,$value);
961: if (ref($option) eq 'ARRAY') {
962: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
963: $text=$option->[1];
964: $option=$option->[0];
965: } else {
966: $text=$option;
967: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
968: }
969: if ( $selected eq $option ) {
970: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
971: } else {
972: $optionlist.="<option $value >".&mt($text)."</option>\n";
973: }
974: }
975: }
976: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
977: &html_element_name($name).'" '.&element_change_detection().' >
978: '.$optionlist.'
979: </select></span>';
980: return $result;
981: }
982:
983: sub select_or_text_arg {
984: my ($description,$name,$list,$token,$size) = @_;
985: my $result;
986: my $optionlist="";
987: my $found=0;
988: my $selected=$token->[2]{$name};
989: if (ref($list) eq 'ARRAY') {
990: foreach my $option (@{$list}) {
991: my ($text,$value);
992: if (ref($option) eq 'ARRAY') {
993: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
994: $text=$option->[1];
995: $option=$option->[0];
996: } else {
997: $text=$option;
998: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
999: }
1000: if ( $selected eq $option ) {
1001: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
1002: $found=1;
1003: } else {
1004: $optionlist.="<option $value>$text</option>\n";
1005: }
1006: }
1007: }
1008: $optionlist.="<option value=\"TYPEDINVALUE\"".
1009: ((!$found)?' selected="selected"':'').
1010: ">".&mt('Type-in value')."</option>\n";
1011: #
1012: my $change_code=&element_change_detection();
1013: my $element=&html_element_name($name);
1014: my $selectelement='select_list_'.$element;
1015: my $typeinelement='type_in_'.$element;
1016: my $typeinvalue=($found?'':$selected);
1017: #
1018: my $hiddenvalue='this.form.'.$element.'.value';
1019: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
1020: my $selectedvalue='this.form.'.$selectelement.
1021: '.options['.$selectedindex.'].value';
1022: my $typedinvalue='this.form.'.$typeinelement.'.value';
1023: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
1024: $description=&mt($description);
1025: #
1026: return (<<ENDSELECTORTYPE);
1027: <span class="LC_nobreak">
1028: $description
1029: <select name="$selectelement"
1030: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
1031: $optionlist
1032: </select>
1033: <input type="text" size="$size" name="$typeinelement"
1034: value="$typeinvalue"
1035: onChange="$hiddenvalue=$typedinvalue;"
1036: onFocus="$selectedindex=$selecttypeinindex-1;" />
1037: <input type="hidden" name="$element" value="$selected" $change_code />
1038: </span>
1039: ENDSELECTORTYPE
1040: }
1041:
1042: #----------------------------------------------------- image coordinates
1043: # single image coordinates, x, y
1044: sub entercoords {
1045: my ($idx,$idy,$mode,$width,$height) = @_;
1046: unless ($Apache::edit::bgimgsrc) { return ''; }
1047: if ($idx) { $idx.='_'; }
1048: if ($idy) { $idy.='_'; }
1049: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1050: my $form = 'lonhomework';
1051: my $element;
1052: if (! defined($mode) || $mode eq 'attribute') {
1053: $element = &escape("$Apache::lonxml::curdepth");
1054: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1055: $element = &escape('homework_edit_'.
1056: $Apache::lonxml::curdepth);
1057: }
1058: my $id=$Apache::lonxml::curdepth;
1059: my %data=("imagechoice.$id.type" =>'point',
1060: "imagechoice.$id.formname" =>$form,
1061: "imagechoice.$id.formx" =>"$idx$element",
1062: "imagechoice.$id.formy" =>"$idy$element",
1063: "imagechoice.$id.file" =>$bgfile,
1064: "imagechoice.$id.formcoord" =>$element);
1065: if ($height) {
1066: $data{"imagechoice.$id.formheight"}=$height.'_'.
1067: $Apache::edit::bgimgsrccurdepth;
1068: }
1069: if ($width) {
1070: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1071: $Apache::edit::bgimgsrccurdepth;
1072: }
1073: &Apache::lonnet::appenv(\%data);
1074: my $text="Click Coordinates";
1075: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1076: return $result;
1077: }
1078:
1079: # coordinates (x1,y1)-(x2,y2)...
1080: # mode can be either box, or polygon
1081: sub entercoord {
1082: my ($idx,$mode,$width,$height,$type) = @_;
1083: unless ($Apache::edit::bgimgsrc) { return ''; }
1084: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1085: my $form = 'lonhomework';
1086: my $element;
1087: if (! defined($mode) || $mode eq 'attribute') {
1088: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1089: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1090: $element = &escape('homework_edit_'.
1091: $Apache::lonxml::curdepth);
1092: }
1093: my $id=$Apache::lonxml::curdepth;
1094: my %data=("imagechoice.$id.type" =>$type,
1095: "imagechoice.$id.formname" =>$form,
1096: "imagechoice.$id.file" =>$bgfile,
1097: "imagechoice.$id.formcoord" =>$element);
1098: if ($height) {
1099: $data{"imagechoice.$id.formheight"}=$height.'_'.
1100: $Apache::edit::bgimgsrccurdepth;
1101: }
1102: if ($width) {
1103: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1104: $Apache::edit::bgimgsrccurdepth;
1105: }
1106: &Apache::lonnet::appenv(\%data);
1107: my $text="Enter Coordinates";
1108: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1109: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1110: return $result;
1111: }
1112:
1113: sub deletecoorddata {
1114: &Apache::lonnet::delenv('imagechoice.');
1115: }
1116:
1117: #----------------------------------------------------- browse
1118: sub browse {
1119: # insert a link to call up the filesystem browser (lonindexer)
1120: my ($id, $mode, $titleid, $only) = @_;
1121: my $form = 'lonhomework';
1122: my $element;
1123: if (! defined($mode) || $mode eq 'attribute') {
1124: $element = &escape("$id\_$Apache::lonxml::curdepth");
1125: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1126: $element = &escape('homework_edit_'.
1127: $Apache::lonxml::curdepth);
1128: }
1129: my $titleelement;
1130: if ($titleid) {
1131: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1132: } else {
1133: $titleelement=",'$only'";
1134: }
1135: my $result = <<"ENDBUTTON";
1136: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1137: ENDBUTTON
1138: return $result;
1139: }
1140:
1141: #----------------------------------------------------- browse
1142: sub search {
1143: # insert a link to call up the filesystem browser (lonindexer)
1144: my ($id, $mode, $titleid) = @_;
1145: my $form = 'lonhomework';
1146: my $element;
1147: if (! defined($mode) || $mode eq 'attribute') {
1148: $element = &escape("$id\_$Apache::lonxml::curdepth");
1149: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1150: $element = &escape('homework_edit_'.
1151: $Apache::lonxml::curdepth);
1152: }
1153: my $titleelement;
1154: if ($titleid) {
1155: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1156: }
1157: my $result = <<"ENDBUTTON";
1158: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1159: ENDBUTTON
1160: return $result;
1161: }
1162:
1163:
1164: 1;
1165: __END__
1166:
1167:
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