1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.151 2013/12/03 17:47:30 bisitz 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: $description=&mt(&Apache::lonxml::description($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 class="LC_edit_problem_latexhelper">'.
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>';
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: $result.='<div><table><tr><td>';
215:
216: my ($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: &mt($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: </functionplotelements>
405: <functionplotruleset>
406: </functionplotruleset>
407: </functionplotresponse>';
408: }
409:
410: sub insert_spline {
411: return '
412: <spline />';
413: }
414:
415: sub insert_backgroundplot {
416: return '
417: <backgroundplot />';
418: }
419:
420: sub insert_plotobject {
421: return '
422: <plotobject />';
423: }
424:
425: sub insert_plotvector {
426: return '
427: <plotvector />';
428: }
429:
430: sub insert_drawvectorsum {
431: return '
432: <drawvectorsum />';
433: }
434:
435:
436: sub insert_functionplotrule {
437: return '
438: <functionplotrule />';
439: }
440:
441: sub insert_functionplotvectorrule {
442: return '
443: <functionplotvectorrule />';
444: }
445:
446: sub insert_functionplotvectorsumrule {
447: return '
448: <functionplotvectorsumrule />';
449: }
450:
451: sub insert_functionplotcustomrule {
452: return '
453: <functionplotcustomrule>
454: <answer type="loncapa/perl">
455: # &fpr_val("label"), &fpr_f($x), &fpr_dfdx($x), &fpr_d2fdx2($x)
456: # ($xs,$xe,$ys,$ye)=&fpr_vectorcoords("Name"), ($x,$y)=&fpr_objectcoords("Name")
457: # &fpr_vectorlength("Name"), &fpr_vectorangle("Name")
458:
459: # Return 0 or 1
460: return 1;
461: </answer>
462: </functionplotcustomrule>';
463: }
464:
465: sub insert_functionplotruleset {
466: return '
467: <functionplotruleset>
468: <functionplotrule />
469: </functionplotruleset>';
470: }
471:
472: sub insert_functionplotelements {
473: return '
474: <functionplotelements>
475: <spline />
476: </functionplotelements>';
477: }
478:
479: sub insert_numericalresponse {
480: return '
481: <numericalresponse answer="">
482: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
483: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
484: <textline />
485: <hintgroup>
486: <startouttext /><endouttext />
487: </hintgroup>
488: </numericalresponse>';
489: }
490:
491: sub insert_externalresponse {
492: return '
493: <externalresponse url="" answer="" answerdisplay="" form="">
494: <textfield spellcheck="none" />
495: </externalresponse>';
496: }
497:
498: sub insert_customresponse {
499: return '
500: <customresponse>
501: <answer type="loncapa/perl">
502: </answer>
503: <textline />
504: <hintgroup>
505: <startouttext /><endouttext />
506: </hintgroup>
507: </customresponse>';
508: }
509:
510: sub insert_customresponse_answer {
511: return '
512: <answer type="loncapa/perl">
513: </answer>
514: ';
515: }
516:
517: sub insert_customhint {
518: return '
519: <customhint>
520: <answer type="loncapa/perl">
521: </answer>
522: </customhint>';
523: }
524:
525: sub insert_customhint_answer {
526: return '
527: <answer type="loncapa/perl">
528: </answer>
529: ';
530: }
531:
532: sub insert_mathresponse {
533: return '
534: <mathresponse>
535: <answer>
536: </answer>
537: <textline />
538: <hintgroup>
539: <startouttext />
540: <endouttext />
541: </hintgroup>
542: </mathresponse>';
543: }
544:
545: sub insert_mathresponse_answer {
546: return '
547: <answer>
548: </answer>
549: ';
550: }
551:
552: sub insert_mathhint {
553: return '
554: <mathhint>
555: <answer>
556: </answer>
557: </mathhint>';
558: }
559:
560: sub insert_mathhint_answer {
561: return '
562: <answer>
563: </answer>
564: ';
565: }
566:
567: sub insert_stringresponse {
568: return '
569: <stringresponse answer="" type="">
570: <textline />
571: <hintgroup>
572: <startouttext /><endouttext />
573: </hintgroup>
574: </stringresponse>';
575: }
576:
577: sub insert_essayresponse {
578: return '
579: <essayresponse>
580: <textfield></textfield>
581: </essayresponse>';
582: }
583:
584: sub insert_imageresponse {
585: return '
586: <imageresponse max="1">
587: <foilgroup>
588: <foil>
589: </foil>
590: </foilgroup>
591: <hintgroup>
592: <startouttext /><endouttext />
593: </hintgroup>
594: </imageresponse>';
595: }
596:
597: sub insert_optionresponse {
598: return '
599: <optionresponse max="10">
600: <foilgroup options="">
601: <foil>
602: <startouttext /><endouttext />
603: </foil>
604: </foilgroup>
605: <hintgroup>
606: <startouttext /><endouttext />
607: </hintgroup>
608: </optionresponse>';
609: }
610:
611: sub insert_organicresponse {
612: return '
613: <organicresponse>
614: <textline />
615: <hintgroup>
616: <startouttext /><endouttext />
617: </hintgroup>
618: </organicresponse>';
619: }
620:
621: sub insert_organicstructure {
622: return '
623: <organicstructure />
624: ';
625: }
626:
627: sub insert_radiobuttonresponse {
628: return '
629: <radiobuttonresponse max="10">
630: <foilgroup>
631: <foil>
632: <startouttext /><endouttext />
633: </foil>
634: </foilgroup>
635: <hintgroup>
636: <startouttext /><endouttext />
637: </hintgroup>
638: </radiobuttonresponse>';
639: }
640:
641: sub insert_reactionresponse {
642: return '
643: <reactionresponse>
644: <textline />
645: <hintgroup>
646: <startouttext /><endouttext />
647: </hintgroup>
648: </reactionresponse>';
649: }
650:
651: sub insert_rankresponse {
652: return '
653: <rankresponse max="10">
654: <foilgroup options="">
655: <foil>
656: <startouttext /><endouttext />
657: </foil>
658: </foilgroup>
659: <hintgroup>
660: <startouttext /><endouttext />
661: </hintgroup>
662: </rankresponse>';
663: }
664:
665: sub insert_matchresponse {
666: return '
667: <matchresponse max="10">
668: <foilgroup options="">
669: <itemgroup>
670: <item>
671: <startouttext /><endouttext />
672: </item>
673: </itemgroup>
674: <foil>
675: <startouttext /><endouttext />
676: </foil>
677: </foilgroup>
678: <hintgroup>
679: <startouttext /><endouttext />
680: </hintgroup>
681: </matchresponse>';
682: }
683:
684: sub insert_startpartmarker { return '<startpartmarker />'; }
685: sub insert_endpartmarker { return '<endpartmarker />'; }
686:
687: sub insert_displayduedate { return '<displayduedate />'; }
688: sub insert_displaytitle { return '<displaytitle />'; }
689: sub insert_hintpart {
690: return '
691: <hintpart on="default">
692: <startouttext/><endouttext />
693: </hintpart>';
694: }
695:
696: sub insert_hintgroup {
697: return '
698: <hintgroup>
699: <startouttext /><endouttext />
700: </hintgroup>';
701: }
702:
703: sub insert_numericalhint {
704: return '
705: <numericalhint>
706: </numericalhint>';
707: }
708:
709: sub insert_reactionhint {
710: return '
711: <reactionhint>
712: </reactionhint>';
713: }
714:
715: sub insert_organichint {
716: return '
717: <organichint>
718: </organichint>';
719: }
720:
721: sub insert_stringhint {
722: return '
723: <stringhint>
724: </stringhint>';
725: }
726:
727: sub insert_formulahint {
728: return '
729: <formulahint>
730: </formulahint>';
731: }
732:
733: sub insert_radiobuttonhint {
734: return '
735: <radiobuttonhint>
736: </radiobuttonhint>';
737: }
738:
739: sub insert_optionhint {
740: return '
741: <optionhint>
742: </optionhint>';
743: }
744:
745: sub insert_startouttext {
746: return "<startouttext /><endouttext />";
747: }
748:
749: sub insert_script {
750: return "\n<script type=\"loncapa/perl\"></script>";
751: }
752:
753: sub js_change_detection {
754: my $unsaved=&mt("There are unsaved changes");
755: return (<<SCRIPT);
756: <script type="text/javascript">
757: // <![CDATA[
758: var clean = true;
759: var is_submit = false;
760: var still_ask = false;
761: function compareForm(event_) {
762: if (!event_ && window.event) {
763: event_ = window.event;
764: }
765: if ((!is_submit || (is_submit && still_ask)) && !clean) {
766: still_ask = false;
767: is_submit = false;
768: event_.returnValue = "$unsaved";
769: return "$unsaved";
770: }
771: }
772: function unClean() {
773: clean=false;
774: }
775: window.onbeforeunload = compareForm;
776: // ]]>
777: </script>
778: SCRIPT
779: }
780:
781: sub form_change_detection {
782: return ' onsubmit="is_submit=true;" ';
783: }
784:
785: sub element_change_detection {
786: return ' onchange="unClean();" ';
787: }
788:
789: sub submit_ask_anyway {
790: my ($extra_action) = @_;
791: return ' onclick="still_ask=true;'.$extra_action.'" ';
792: }
793:
794: sub submit_dont_ask {
795: my ($extra_action) = @_;
796: return ' onclick="is_submit=true;'.$extra_action.'" ';
797: }
798:
799:
800: sub textarea_sizes {
801: my ($data)=@_;
802: my $count=0;
803: my $maxlength=-1;
804: foreach (split ("\n", $$data)) {
805: $count+=int(length($_)/79);
806: $count++;
807: if (length($_) > $maxlength) { $maxlength = length($_); }
808: }
809: my $rows = $count;
810: my $cols = $maxlength;
811: return ($rows,$cols);
812: }
813:
814: sub editline {
815: my ($tag,$data,$description,$size)=@_;
816: $data=&HTML::Entities::encode($data,'<>&"');
817: if ($description) { $description=$description."<br />"; }
818: my $change_code = &element_change_detection();
819: my $result = <<"END";
820: $description
821: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
822: value="$data" size="$size" $change_code />
823: END
824: return $result;
825: }
826:
827: sub editfield {
828: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
829:
830: my ($rows,$cols)=&textarea_sizes(\$data);
831: my $textareaclass;
832:
833: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
834: $rows+=7; # make room for HTMLarea
835: $minheight+=7; # make room for HTMLarea
836: $textareaclass = ' class="LC_richDefaultOff"';
837: }
838: if ($cols > 80) { $cols = 80; }
839: if ($cols < $minwidth ) { $cols = $minwidth; }
840: if ($rows < $minheight) { $rows = $minheight; }
841: if ($description) { $description='<br />'.&mt($description).'<br />'; }
842:
843: # remove typesetting whitespace from between data and the end tag
844: # to make the edit look prettier
845: $data =~ s/\n?[ \t]*$//;
846:
847: return $description."\n".'<textarea style="width:99%" rows="'.$rows.
848: '" cols="'.$cols.'" name="homework_edit_'.
849: $Apache::lonxml::curdepth.'" id="homework_edit_'.
850: $Apache::lonxml::curdepth.'" '.&element_change_detection().
851: $textareaclass.'>'.
852: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
853: ($usehtmlarea?'<br />'.&Apache::lonhtmlcommon::spelllink('lonhomework',
854: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
855: }
856:
857: sub modifiedfield {
858: my ($endtag,$parser) = @_;
859: my $result;
860: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
861: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
862: # textareas throw away intial \n
863: if ($bodytext=~/^\n/) {
864: $result="\n".$result;
865: }
866: # if there is typesetting whitespace from between the data and the end tag
867: # restore to keep the source looking pretty
868: if ($bodytext =~ /(\n?[ \t]*)$/) {
869: $result .= $1;
870: }
871: return $result;
872: }
873:
874: # Returns a 1 if the token has been modified and you should rebuild the tag
875: # side-effects, will modify the $token if new values are found
876: sub get_new_args {
877: my ($token,$parstack,$safeeval,@args)=@_;
878: my $rebuild=0;
879: foreach my $arg (@args) {
880: #just want the string that it was set to
881: my $value=$token->[2]->{$arg};
882: my $element=&html_element_name($arg);
883: my $newvalue=$env{"form.$element"};
884: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
885: if (defined($newvalue) && $value ne $newvalue) {
886: if (ref($newvalue) eq 'ARRAY') {
887: $token->[2]->{$arg}=join(',',@$newvalue);
888: } else {
889: $token->[2]->{$arg}=$newvalue;
890: }
891: $rebuild=1;
892: # add new attributes to the of the attribute seq
893: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
894: push(@{ $token->[3] },$arg);
895: }
896: } elsif (!defined($newvalue) && defined($value)) {
897: delete($token->[2]->{$arg});
898: $rebuild=1;
899: }
900: }
901: return $rebuild;
902: }
903:
904: # looks for /> on start tags
905: sub rebuild_tag {
906: my ($token) = @_;
907: my $result;
908: if ($token->[0] eq 'S') {
909: $result = '<'.$token->[1];
910: foreach my $attribute (@{ $token->[3] }) {
911: my $value = $token->[2]{$attribute};
912: next if ($value eq '');
913: $value =~s/^\s+|\s+$//g;
914: $value =~s/\"//g;
915: &Apache::lonxml::debug("setting :$attribute: to :$value:");
916: $result.=' '.$attribute.'="'.$value.'"';
917: }
918: if ($token->[4] =~ m:/>$:) {
919: $result.=' />';
920: } else {
921: $result.='>';
922: }
923: } elsif ( $token->[0] eq 'E' ) {
924: $result = '</'.$token->[1].'>';
925: }
926: return $result;
927: }
928:
929: sub html_element_name {
930: my ($name) = @_;
931: return $name.'_'.$Apache::lonxml::curdepth;
932: }
933:
934: sub hidden_arg {
935: my ($name,$token) = @_;
936: my $result;
937: my $arg=$token->[2]{$name};
938: $result='<input name="'.&html_element_name($name).
939: '" type="hidden" value="'.$arg.'" />';
940: return $result;
941: }
942:
943: sub checked_arg {
944: my ($description,$name,$list,$token) = @_;
945: my $result;
946: my $optionlist="";
947: my $allselected=$token->[2]{$name};
948: $result=&mt($description);
949: foreach my $option (@$list) {
950: my ($value,$text);
951: if ( ref($option) eq 'ARRAY') {
952: $value='value="'.$$option[0].'"';
953: $text=&mt($$option[1]);
954: $option=$$option[0];
955: } else {
956: $text=&mt($option);
957: $value='value="'.$option.'"';
958: }
959: $result.=' <span class="LC_edit_opt"><label><input type="checkbox" '.$value.' name="'.
960: &html_element_name($name).'"';
961: foreach my $selected (split(/,/,$allselected)) {
962: if ( $selected eq $option ) {
963: $result.=' checked="checked" ';
964: last;
965: }
966: }
967: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
968: }
969: return $result;
970: }
971:
972: sub text_arg {
973: my ($description,$name,$token,$size, $class) = @_;
974: my $result;
975: if (!defined $size) { $size=20; }
976: my $arg=$token->[2]{$name};
977: $result=&mt($description).' <input name="'.&html_element_name($name).
978: '" type="text" value="'.$arg.'" size="'.$size.'" ';
979: if (defined $class) {
980: $result .= 'class="' . $class . '" ';
981: }
982: $result .= &element_change_detection().'/>';
983: return ' <span class="LC_edit_opt">'.$result.'</span>';
984: }
985:
986: sub select_arg {
987: my ($description,$name,$list,$token) = @_;
988: my $result;
989: my $optionlist="";
990: my $selected=$token->[2]{$name};
991: if (ref($list) eq 'ARRAY') {
992: foreach my $option (@{$list}) {
993: my ($text,$value);
994: if (ref($option) eq 'ARRAY') {
995: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
996: $text=$option->[1];
997: $option=$option->[0];
998: } else {
999: $text=$option;
1000: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
1001: }
1002: if ( $selected eq $option ) {
1003: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
1004: } else {
1005: $optionlist.="<option $value >".&mt($text)."</option>\n";
1006: }
1007: }
1008: }
1009: $result.=' <span class="LC_edit_opt">'.&mt($description).' <select name="'.
1010: &html_element_name($name).'" '.&element_change_detection().' >
1011: '.$optionlist.'
1012: </select></span>';
1013: return $result;
1014: }
1015:
1016: sub select_or_text_arg {
1017: my ($description,$name,$list,$token,$size) = @_;
1018: my $result;
1019: my $optionlist="";
1020: my $found=0;
1021: my $selected=$token->[2]{$name};
1022: if (ref($list) eq 'ARRAY') {
1023: foreach my $option (@{$list}) {
1024: my ($text,$value);
1025: if (ref($option) eq 'ARRAY') {
1026: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
1027: $text=$option->[1];
1028: $option=$option->[0];
1029: } else {
1030: $text=$option;
1031: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
1032: }
1033: if ( $selected eq $option ) {
1034: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
1035: $found=1;
1036: } else {
1037: $optionlist.="<option $value>$text</option>\n";
1038: }
1039: }
1040: }
1041: $optionlist.="<option value=\"TYPEDINVALUE\"".
1042: ((!$found)?' selected="selected"':'').
1043: ">".&mt('Type-in value')."</option>\n";
1044: #
1045: my $change_code=&element_change_detection();
1046: my $element=&html_element_name($name);
1047: my $selectelement='select_list_'.$element;
1048: my $typeinelement='type_in_'.$element;
1049: my $typeinvalue=($found?'':$selected);
1050: #
1051: my $hiddenvalue='this.form.'.$element.'.value';
1052: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
1053: my $selectedvalue='this.form.'.$selectelement.
1054: '.options['.$selectedindex.'].value';
1055: my $typedinvalue='this.form.'.$typeinelement.'.value';
1056: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
1057: $description=&mt($description);
1058: #
1059: return (<<ENDSELECTORTYPE);
1060: <span class="LC_edit_opt">
1061: $description
1062: <select name="$selectelement"
1063: onchange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
1064: $optionlist
1065: </select>
1066: <input type="text" size="$size" name="$typeinelement"
1067: value="$typeinvalue"
1068: onchange="$hiddenvalue=$typedinvalue;"
1069: onfocus="$selectedindex=$selecttypeinindex-1;" />
1070: <input type="hidden" name="$element" value="$selected" $change_code />
1071: </span>
1072: ENDSELECTORTYPE
1073: }
1074:
1075: #----------------------------------------------------- image coordinates
1076: # single image coordinates, x, y
1077: sub entercoords {
1078: my ($idx,$idy,$mode,$width,$height) = @_;
1079: unless ($Apache::edit::bgimgsrc) { return ''; }
1080: if ($idx) { $idx.='_'; }
1081: if ($idy) { $idy.='_'; }
1082: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1083: my $form = 'lonhomework';
1084: my $element;
1085: if (! defined($mode) || $mode eq 'attribute') {
1086: $element = &escape("$Apache::lonxml::curdepth");
1087: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1088: $element = &escape('homework_edit_'.
1089: $Apache::lonxml::curdepth);
1090: }
1091: my $id=$Apache::lonxml::curdepth;
1092: my %data=("imagechoice.$id.type" =>'point',
1093: "imagechoice.$id.formname" =>$form,
1094: "imagechoice.$id.formx" =>"$idx$element",
1095: "imagechoice.$id.formy" =>"$idy$element",
1096: "imagechoice.$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="Click Coordinates";
1108: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1109: return $result;
1110: }
1111:
1112: # coordinates (x1,y1)-(x2,y2)...
1113: # mode can be either box, or polygon
1114: sub entercoord {
1115: my ($idx,$mode,$width,$height,$type) = @_;
1116: unless ($Apache::edit::bgimgsrc) { return ''; }
1117: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1118: my $form = 'lonhomework';
1119: my $element;
1120: if (! defined($mode) || $mode eq 'attribute') {
1121: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1122: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1123: $element = &escape('homework_edit_'.
1124: $Apache::lonxml::curdepth);
1125: }
1126: my $id=$Apache::lonxml::curdepth;
1127: my %data=("imagechoice.$id.type" =>$type,
1128: "imagechoice.$id.formname" =>$form,
1129: "imagechoice.$id.file" =>$bgfile,
1130: "imagechoice.$id.formcoord" =>$element);
1131: if ($height) {
1132: $data{"imagechoice.$id.formheight"}=$height.'_'.
1133: $Apache::edit::bgimgsrccurdepth;
1134: }
1135: if ($width) {
1136: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1137: $Apache::edit::bgimgsrccurdepth;
1138: }
1139: &Apache::lonnet::appenv(\%data);
1140: my $text="Enter Coordinates";
1141: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1142: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1143: return $result;
1144: }
1145:
1146: sub deletecoorddata {
1147: &Apache::lonnet::delenv('imagechoice.');
1148: }
1149:
1150: #----------------------------------------------------- browse
1151: sub browse {
1152: # insert a link to call up the filesystem browser (lonindexer)
1153: my ($id, $mode, $titleid, $only) = @_;
1154: my $form = 'lonhomework';
1155: my $element;
1156: if (! defined($mode) || $mode eq 'attribute') {
1157: $element = &escape("$id\_$Apache::lonxml::curdepth");
1158: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1159: $element = &escape('homework_edit_'.
1160: $Apache::lonxml::curdepth);
1161: }
1162: my $titleelement;
1163: if ($titleid) {
1164: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1165: } else {
1166: $titleelement=",'$only'";
1167: }
1168: my $result = <<"ENDBUTTON";
1169: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1170: ENDBUTTON
1171: return $result;
1172: }
1173:
1174: #----------------------------------------------------- browse
1175: sub search {
1176: # insert a link to call up the filesystem browser (lonindexer)
1177: my ($id, $mode, $titleid) = @_;
1178: my $form = 'lonhomework';
1179: my $element;
1180: if (! defined($mode) || $mode eq 'attribute') {
1181: $element = &escape("$id\_$Apache::lonxml::curdepth");
1182: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1183: $element = &escape('homework_edit_'.
1184: $Apache::lonxml::curdepth);
1185: }
1186: my $titleelement;
1187: if ($titleid) {
1188: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1189: }
1190: my $result = <<"ENDBUTTON";
1191: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1192: ENDBUTTON
1193: return $result;
1194: }
1195:
1196:
1197: 1;
1198: __END__
1199:
1200:
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