1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.141 2012/02/28 22:42:31 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: </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_customresponse {
492: return '
493: <customresponse>
494: <answer type="loncapa/perl">
495: </answer>
496: <textline />
497: <hintgroup>
498: <startouttext /><endouttext />
499: </hintgroup>
500: </customresponse>';
501: }
502:
503: sub insert_customresponse_answer {
504: return '
505: <answer type="loncapa/perl">
506: </answer>
507: ';
508: }
509:
510: sub insert_customhint {
511: return '
512: <customhint>
513: <answer type="loncapa/perl">
514: </answer>
515: </customhint>';
516: }
517:
518: sub insert_customhint_answer {
519: return '
520: <answer type="loncapa/perl">
521: </answer>
522: ';
523: }
524:
525: sub insert_mathresponse {
526: return '
527: <mathresponse>
528: <answer>
529: </answer>
530: <textline />
531: <hintgroup>
532: <startouttext />
533: <endouttext />
534: </hintgroup>
535: </mathresponse>';
536: }
537:
538: sub insert_mathresponse_answer {
539: return '
540: <answer>
541: </answer>
542: ';
543: }
544:
545: sub insert_mathhint {
546: return '
547: <mathhint>
548: <answer>
549: </answer>
550: </mathhint>';
551: }
552:
553: sub insert_mathhint_answer {
554: return '
555: <answer>
556: </answer>
557: ';
558: }
559:
560: sub insert_stringresponse {
561: return '
562: <stringresponse answer="" type="">
563: <textline />
564: <hintgroup>
565: <startouttext /><endouttext />
566: </hintgroup>
567: </stringresponse>';
568: }
569:
570: sub insert_essayresponse {
571: return '
572: <essayresponse>
573: <textfield></textfield>
574: </essayresponse>';
575: }
576:
577: sub insert_imageresponse {
578: return '
579: <imageresponse max="1">
580: <foilgroup>
581: <foil>
582: </foil>
583: </foilgroup>
584: <hintgroup>
585: <startouttext /><endouttext />
586: </hintgroup>
587: </imageresponse>';
588: }
589:
590: sub insert_optionresponse {
591: return '
592: <optionresponse max="10">
593: <foilgroup options="">
594: <foil>
595: <startouttext /><endouttext />
596: </foil>
597: </foilgroup>
598: <hintgroup>
599: <startouttext /><endouttext />
600: </hintgroup>
601: </optionresponse>';
602: }
603:
604: sub insert_organicresponse {
605: return '
606: <organicresponse>
607: <textline />
608: <hintgroup>
609: <startouttext /><endouttext />
610: </hintgroup>
611: </organicresponse>';
612: }
613:
614: sub insert_organicstructure {
615: return '
616: <organicstructure />
617: ';
618: }
619:
620: sub insert_radiobuttonresponse {
621: return '
622: <radiobuttonresponse max="10">
623: <foilgroup>
624: <foil>
625: <startouttext /><endouttext />
626: </foil>
627: </foilgroup>
628: <hintgroup>
629: <startouttext /><endouttext />
630: </hintgroup>
631: </radiobuttonresponse>';
632: }
633:
634: sub insert_reactionresponse {
635: return '
636: <reactionresponse>
637: <textline />
638: <hintgroup>
639: <startouttext /><endouttext />
640: </hintgroup>
641: </reactionresponse>';
642: }
643:
644: sub insert_rankresponse {
645: return '
646: <rankresponse max="10">
647: <foilgroup options="">
648: <foil>
649: <startouttext /><endouttext />
650: </foil>
651: </foilgroup>
652: <hintgroup>
653: <startouttext /><endouttext />
654: </hintgroup>
655: </rankresponse>';
656: }
657:
658: sub insert_matchresponse {
659: return '
660: <matchresponse max="10">
661: <foilgroup options="">
662: <itemgroup>
663: </itemgroup>
664: <foil>
665: <startouttext /><endouttext />
666: </foil>
667: </foilgroup>
668: <hintgroup>
669: <startouttext /><endouttext />
670: </hintgroup>
671: </matchresponse>';
672: }
673:
674: sub insert_startpartmarker { return '<startpartmarker />'; }
675: sub insert_endpartmarker { return '<endpartmarker />'; }
676:
677: sub insert_displayduedate { return '<displayduedate />'; }
678: sub insert_displaytitle { return '<displaytitle />'; }
679: sub insert_hintpart {
680: return '
681: <hintpart on="default">
682: <startouttext/><endouttext />
683: </hintpart>';
684: }
685:
686: sub insert_hintgroup {
687: return '
688: <hintgroup>
689: <startouttext /><endouttext />
690: </hintgroup>';
691: }
692:
693: sub insert_numericalhint {
694: return '
695: <numericalhint>
696: </numericalhint>';
697: }
698:
699: sub insert_reactionhint {
700: return '
701: <reactionhint>
702: </reactionhint>';
703: }
704:
705: sub insert_organichint {
706: return '
707: <organichint>
708: </organichint>';
709: }
710:
711: sub insert_stringhint {
712: return '
713: <stringhint>
714: </stringhint>';
715: }
716:
717: sub insert_formulahint {
718: return '
719: <formulahint>
720: </formulahint>';
721: }
722:
723: sub insert_radiobuttonhint {
724: return '
725: <radiobuttonhint>
726: </radiobuttonhint>';
727: }
728:
729: sub insert_optionhint {
730: return '
731: <optionhint>
732: </optionhint>';
733: }
734:
735: sub insert_startouttext {
736: return "<startouttext /><endouttext />";
737: }
738:
739: sub insert_script {
740: return "\n<script type=\"loncapa/perl\"></script>";
741: }
742:
743: sub js_change_detection {
744: my $unsaved=&mt("There are unsaved changes");
745: return (<<SCRIPT);
746: <script type="text/javascript">
747: var clean = true;
748: var is_submit = false;
749: var still_ask = false;
750: function compareForm(event_) {
751: if (!event_ && window.event) {
752: event_ = window.event;
753: }
754: if ((!is_submit || (is_submit && still_ask)) && !clean) {
755: still_ask = false;
756: is_submit = false;
757: event_.returnValue = "$unsaved";
758: return "$unsaved";
759: }
760: }
761: function unClean() {
762: clean=false;
763: }
764: window.onbeforeunload = compareForm;
765: </script>
766: SCRIPT
767: }
768:
769: sub form_change_detection {
770: return ' onsubmit="is_submit=true;" ';
771: }
772:
773: sub element_change_detection {
774: return ' onchange="unClean();" ';
775: }
776:
777: sub submit_ask_anyway {
778: my ($extra_action) = @_;
779: return ' onclick="still_ask=true;'.$extra_action.'" ';
780: }
781:
782: sub submit_dont_ask {
783: my ($extra_action) = @_;
784: return ' onclick="is_submit=true;'.$extra_action.'" ';
785: }
786:
787:
788: sub textarea_sizes {
789: my ($data)=@_;
790: my $count=0;
791: my $maxlength=-1;
792: foreach (split ("\n", $$data)) {
793: $count+=int(length($_)/79);
794: $count++;
795: if (length($_) > $maxlength) { $maxlength = length($_); }
796: }
797: my $rows = $count;
798: my $cols = $maxlength;
799: return ($rows,$cols);
800: }
801:
802: sub editline {
803: my ($tag,$data,$description,$size)=@_;
804: $data=&HTML::Entities::encode($data,'<>&"');
805: if ($description) { $description=$description."<br />"; }
806: my $change_code = &element_change_detection();
807: my $result = <<"END";
808: $description
809: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
810: value="$data" size="$size" $change_code />
811: END
812: return $result;
813: }
814:
815: sub editfield {
816: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
817:
818: my ($rows,$cols)=&textarea_sizes(\$data);
819: my $textareaclass;
820:
821: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
822: $rows+=7; # make room for HTMLarea
823: $minheight+=7; # make room for HTMLarea
824: $textareaclass = ' class="LC_richDefaultOff"';
825: }
826: if ($cols > 80) { $cols = 80; }
827: if ($cols < $minwidth ) { $cols = $minwidth; }
828: if ($rows < $minheight) { $rows = $minheight; }
829: if ($description) { $description=$description."<br />"; }
830:
831: # remove typesetting whitespace from between data and the end tag
832: # to make the edit look prettier
833: $data =~ s/\n?[ \t]*$//;
834:
835: return $description."\n".'<textarea style="width:99%" rows="'.$rows.
836: '" cols="'.$cols.'" name="homework_edit_'.
837: $Apache::lonxml::curdepth.'" id="homework_edit_'.
838: $Apache::lonxml::curdepth.'" '.&element_change_detection().
839: $textareaclass.'>'.
840: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
841: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
842: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
843: }
844:
845: sub modifiedfield {
846: my ($endtag,$parser) = @_;
847: my $result;
848: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
849: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
850: # textareas throw away intial \n
851: if ($bodytext=~/^\n/) {
852: $result="\n".$result;
853: }
854: # if there is typesetting whitespace from between the data and the end tag
855: # restore to keep the source looking pretty
856: if ($bodytext =~ /(\n?[ \t]*)$/) {
857: $result .= $1;
858: }
859: return $result;
860: }
861:
862: # Returns a 1 if the token has been modified and you should rebuild the tag
863: # side-effects, will modify the $token if new values are found
864: sub get_new_args {
865: my ($token,$parstack,$safeeval,@args)=@_;
866: my $rebuild=0;
867: foreach my $arg (@args) {
868: #just want the string that it was set to
869: my $value=$token->[2]->{$arg};
870: my $element=&html_element_name($arg);
871: my $newvalue=$env{"form.$element"};
872: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
873: if (defined($newvalue) && $value ne $newvalue) {
874: if (ref($newvalue) eq 'ARRAY') {
875: $token->[2]->{$arg}=join(',',@$newvalue);
876: } else {
877: $token->[2]->{$arg}=$newvalue;
878: }
879: $rebuild=1;
880: # add new attributes to the of the attribute seq
881: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
882: push(@{ $token->[3] },$arg);
883: }
884: } elsif (!defined($newvalue) && defined($value)) {
885: delete($token->[2]->{$arg});
886: $rebuild=1;
887: }
888: }
889: return $rebuild;
890: }
891:
892: # looks for /> on start tags
893: sub rebuild_tag {
894: my ($token) = @_;
895: my $result;
896: if ($token->[0] eq 'S') {
897: $result = '<'.$token->[1];
898: foreach my $attribute (@{ $token->[3] }) {
899: my $value = $token->[2]{$attribute};
900: next if ($value eq '');
901: $value =~s/^\s+|\s+$//g;
902: $value =~s/\"//g;
903: &Apache::lonxml::debug("setting :$attribute: to :$value:");
904: $result.=' '.$attribute.'="'.$value.'"';
905: }
906: if ($token->[4] =~ m:/>$:) {
907: $result.=' />';
908: } else {
909: $result.='>';
910: }
911: } elsif ( $token->[0] eq 'E' ) {
912: $result = '</'.$token->[1].'>';
913: }
914: return $result;
915: }
916:
917: sub html_element_name {
918: my ($name) = @_;
919: return $name.'_'.$Apache::lonxml::curdepth;
920: }
921:
922: sub hidden_arg {
923: my ($name,$token) = @_;
924: my $result;
925: my $arg=$token->[2]{$name};
926: $result='<input name="'.&html_element_name($name).
927: '" type="hidden" value="'.$arg.'" />';
928: return $result;
929: }
930:
931: sub checked_arg {
932: my ($description,$name,$list,$token) = @_;
933: my $result;
934: my $optionlist="";
935: my $allselected=$token->[2]{$name};
936: $result=&mt($description);
937: foreach my $option (@$list) {
938: my ($value,$text);
939: if ( ref($option) eq 'ARRAY') {
940: $value='value="'.$$option[0].'"';
941: $text=$$option[1];
942: $option=$$option[0];
943: } else {
944: $text=$option;
945: $value='value="'.$option.'"';
946: }
947: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
948: &html_element_name($name).'"';
949: foreach my $selected (split(/,/,$allselected)) {
950: if ( $selected eq $option ) {
951: $result.=' checked="checked" ';
952: last;
953: }
954: }
955: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
956: }
957: return $result;
958: }
959:
960: sub text_arg {
961: my ($description,$name,$token,$size, $class) = @_;
962: my $result;
963: if (!defined $size) { $size=20; }
964: my $arg=$token->[2]{$name};
965: $result=&mt($description).' <input name="'.&html_element_name($name).
966: '" type="text" value="'.$arg.'" size="'.$size.'" ';
967: if (defined $class) {
968: $result .= 'class="' . $class . '" ';
969: }
970: $result .= &element_change_detection().'/>';
971: return '<span class="LC_nobreak">'.$result.'</span>';
972: }
973:
974: sub select_arg {
975: my ($description,$name,$list,$token) = @_;
976: my $result;
977: my $optionlist="";
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 $value selected=\"selected\">".&mt($text)."</option>\n";
992: } else {
993: $optionlist.="<option $value >".&mt($text)."</option>\n";
994: }
995: }
996: }
997: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
998: &html_element_name($name).'" '.&element_change_detection().' >
999: '.$optionlist.'
1000: </select></span>';
1001: return $result;
1002: }
1003:
1004: sub select_or_text_arg {
1005: my ($description,$name,$list,$token,$size) = @_;
1006: my $result;
1007: my $optionlist="";
1008: my $found=0;
1009: my $selected=$token->[2]{$name};
1010: if (ref($list) eq 'ARRAY') {
1011: foreach my $option (@{$list}) {
1012: my ($text,$value);
1013: if (ref($option) eq 'ARRAY') {
1014: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
1015: $text=$option->[1];
1016: $option=$option->[0];
1017: } else {
1018: $text=$option;
1019: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
1020: }
1021: if ( $selected eq $option ) {
1022: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
1023: $found=1;
1024: } else {
1025: $optionlist.="<option $value>$text</option>\n";
1026: }
1027: }
1028: }
1029: $optionlist.="<option value=\"TYPEDINVALUE\"".
1030: ((!$found)?' selected="selected"':'').
1031: ">".&mt('Type-in value')."</option>\n";
1032: #
1033: my $change_code=&element_change_detection();
1034: my $element=&html_element_name($name);
1035: my $selectelement='select_list_'.$element;
1036: my $typeinelement='type_in_'.$element;
1037: my $typeinvalue=($found?'':$selected);
1038: #
1039: my $hiddenvalue='this.form.'.$element.'.value';
1040: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
1041: my $selectedvalue='this.form.'.$selectelement.
1042: '.options['.$selectedindex.'].value';
1043: my $typedinvalue='this.form.'.$typeinelement.'.value';
1044: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
1045: $description=&mt($description);
1046: #
1047: return (<<ENDSELECTORTYPE);
1048: <span class="LC_nobreak">
1049: $description
1050: <select name="$selectelement"
1051: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
1052: $optionlist
1053: </select>
1054: <input type="text" size="$size" name="$typeinelement"
1055: value="$typeinvalue"
1056: onChange="$hiddenvalue=$typedinvalue;"
1057: onFocus="$selectedindex=$selecttypeinindex-1;" />
1058: <input type="hidden" name="$element" value="$selected" $change_code />
1059: </span>
1060: ENDSELECTORTYPE
1061: }
1062:
1063: #----------------------------------------------------- image coordinates
1064: # single image coordinates, x, y
1065: sub entercoords {
1066: my ($idx,$idy,$mode,$width,$height) = @_;
1067: unless ($Apache::edit::bgimgsrc) { return ''; }
1068: if ($idx) { $idx.='_'; }
1069: if ($idy) { $idy.='_'; }
1070: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1071: my $form = 'lonhomework';
1072: my $element;
1073: if (! defined($mode) || $mode eq 'attribute') {
1074: $element = &escape("$Apache::lonxml::curdepth");
1075: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1076: $element = &escape('homework_edit_'.
1077: $Apache::lonxml::curdepth);
1078: }
1079: my $id=$Apache::lonxml::curdepth;
1080: my %data=("imagechoice.$id.type" =>'point',
1081: "imagechoice.$id.formname" =>$form,
1082: "imagechoice.$id.formx" =>"$idx$element",
1083: "imagechoice.$id.formy" =>"$idy$element",
1084: "imagechoice.$id.file" =>$bgfile,
1085: "imagechoice.$id.formcoord" =>$element);
1086: if ($height) {
1087: $data{"imagechoice.$id.formheight"}=$height.'_'.
1088: $Apache::edit::bgimgsrccurdepth;
1089: }
1090: if ($width) {
1091: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1092: $Apache::edit::bgimgsrccurdepth;
1093: }
1094: &Apache::lonnet::appenv(\%data);
1095: my $text="Click Coordinates";
1096: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1097: return $result;
1098: }
1099:
1100: # coordinates (x1,y1)-(x2,y2)...
1101: # mode can be either box, or polygon
1102: sub entercoord {
1103: my ($idx,$mode,$width,$height,$type) = @_;
1104: unless ($Apache::edit::bgimgsrc) { return ''; }
1105: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1106: my $form = 'lonhomework';
1107: my $element;
1108: if (! defined($mode) || $mode eq 'attribute') {
1109: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1110: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1111: $element = &escape('homework_edit_'.
1112: $Apache::lonxml::curdepth);
1113: }
1114: my $id=$Apache::lonxml::curdepth;
1115: my %data=("imagechoice.$id.type" =>$type,
1116: "imagechoice.$id.formname" =>$form,
1117: "imagechoice.$id.file" =>$bgfile,
1118: "imagechoice.$id.formcoord" =>$element);
1119: if ($height) {
1120: $data{"imagechoice.$id.formheight"}=$height.'_'.
1121: $Apache::edit::bgimgsrccurdepth;
1122: }
1123: if ($width) {
1124: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1125: $Apache::edit::bgimgsrccurdepth;
1126: }
1127: &Apache::lonnet::appenv(\%data);
1128: my $text="Enter Coordinates";
1129: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1130: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1131: return $result;
1132: }
1133:
1134: sub deletecoorddata {
1135: &Apache::lonnet::delenv('imagechoice.');
1136: }
1137:
1138: #----------------------------------------------------- browse
1139: sub browse {
1140: # insert a link to call up the filesystem browser (lonindexer)
1141: my ($id, $mode, $titleid, $only) = @_;
1142: my $form = 'lonhomework';
1143: my $element;
1144: if (! defined($mode) || $mode eq 'attribute') {
1145: $element = &escape("$id\_$Apache::lonxml::curdepth");
1146: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1147: $element = &escape('homework_edit_'.
1148: $Apache::lonxml::curdepth);
1149: }
1150: my $titleelement;
1151: if ($titleid) {
1152: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1153: } else {
1154: $titleelement=",'$only'";
1155: }
1156: my $result = <<"ENDBUTTON";
1157: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1158: ENDBUTTON
1159: return $result;
1160: }
1161:
1162: #----------------------------------------------------- browse
1163: sub search {
1164: # insert a link to call up the filesystem browser (lonindexer)
1165: my ($id, $mode, $titleid) = @_;
1166: my $form = 'lonhomework';
1167: my $element;
1168: if (! defined($mode) || $mode eq 'attribute') {
1169: $element = &escape("$id\_$Apache::lonxml::curdepth");
1170: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1171: $element = &escape('homework_edit_'.
1172: $Apache::lonxml::curdepth);
1173: }
1174: my $titleelement;
1175: if ($titleid) {
1176: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1177: }
1178: my $result = <<"ENDBUTTON";
1179: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1180: ENDBUTTON
1181: return $result;
1182: }
1183:
1184:
1185: 1;
1186: __END__
1187:
1188:
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