1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.138 2011/11/22 02:13:37 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_functionplotcustomrule {
448: return '
449: <functionplotcustomrule>
450: <answer type="loncapa/perl">
451: # &fpr_val("label"), &fpr_f($x), &fpr_dfdx($x), &fpr_d2fdx2($x)
452: # ($xs,$xe,$ys,$ye)=&fpr_vectorcoords("Name"), ($x,$y)=&fpr_objectcoords("Name")
453: # &fpr_vectorlength("Name"), &fpr_vectorangle("Name")
454:
455: # Return 0 or 1
456: return 1;
457: </answer>
458: </functionplotcustomrule>';
459: }
460:
461: sub insert_functionplotruleset {
462: return '
463: <functionplotruleset>
464: <functionplotrule />
465: </functionplotruleset>';
466: }
467:
468: sub insert_functionplotelements {
469: return '
470: <functionplotelements>
471: <spline />
472: </functionplotelements>';
473: }
474:
475: sub insert_numericalresponse {
476: return '
477: <numericalresponse answer="">
478: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
479: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
480: <textline />
481: <hintgroup>
482: <startouttext /><endouttext />
483: </hintgroup>
484: </numericalresponse>';
485: }
486:
487: sub insert_customresponse {
488: return '
489: <customresponse>
490: <answer type="loncapa/perl">
491: </answer>
492: <textline />
493: <hintgroup>
494: <startouttext /><endouttext />
495: </hintgroup>
496: </customresponse>';
497: }
498:
499: sub insert_customresponse_answer {
500: return '
501: <answer type="loncapa/perl">
502: </answer>
503: ';
504: }
505:
506: sub insert_customhint {
507: return '
508: <customhint>
509: <answer type="loncapa/perl">
510: </answer>
511: </customhint>';
512: }
513:
514: sub insert_customhint_answer {
515: return '
516: <answer type="loncapa/perl">
517: </answer>
518: ';
519: }
520:
521: sub insert_mathresponse {
522: return '
523: <mathresponse>
524: <answer>
525: </answer>
526: <textline />
527: <hintgroup>
528: <startouttext />
529: <endouttext />
530: </hintgroup>
531: </mathresponse>';
532: }
533:
534: sub insert_mathresponse_answer {
535: return '
536: <answer>
537: </answer>
538: ';
539: }
540:
541: sub insert_mathhint {
542: return '
543: <mathhint>
544: <answer>
545: </answer>
546: </mathhint>';
547: }
548:
549: sub insert_mathhint_answer {
550: return '
551: <answer>
552: </answer>
553: ';
554: }
555:
556: sub insert_stringresponse {
557: return '
558: <stringresponse answer="" type="">
559: <textline />
560: <hintgroup>
561: <startouttext /><endouttext />
562: </hintgroup>
563: </stringresponse>';
564: }
565:
566: sub insert_essayresponse {
567: return '
568: <essayresponse>
569: <textfield></textfield>
570: </essayresponse>';
571: }
572:
573: sub insert_imageresponse {
574: return '
575: <imageresponse max="1">
576: <foilgroup>
577: <foil>
578: </foil>
579: </foilgroup>
580: <hintgroup>
581: <startouttext /><endouttext />
582: </hintgroup>
583: </imageresponse>';
584: }
585:
586: sub insert_optionresponse {
587: return '
588: <optionresponse max="10">
589: <foilgroup options="">
590: <foil>
591: <startouttext /><endouttext />
592: </foil>
593: </foilgroup>
594: <hintgroup>
595: <startouttext /><endouttext />
596: </hintgroup>
597: </optionresponse>';
598: }
599:
600: sub insert_organicresponse {
601: return '
602: <organicresponse>
603: <textline />
604: <hintgroup>
605: <startouttext /><endouttext />
606: </hintgroup>
607: </organicresponse>';
608: }
609:
610: sub insert_organicstructure {
611: return '
612: <organicstructure />
613: ';
614: }
615:
616: sub insert_radiobuttonresponse {
617: return '
618: <radiobuttonresponse max="10">
619: <foilgroup>
620: <foil>
621: <startouttext /><endouttext />
622: </foil>
623: </foilgroup>
624: <hintgroup>
625: <startouttext /><endouttext />
626: </hintgroup>
627: </radiobuttonresponse>';
628: }
629:
630: sub insert_reactionresponse {
631: return '
632: <reactionresponse>
633: <textline />
634: <hintgroup>
635: <startouttext /><endouttext />
636: </hintgroup>
637: </reactionresponse>';
638: }
639:
640: sub insert_rankresponse {
641: return '
642: <rankresponse max="10">
643: <foilgroup options="">
644: <foil>
645: <startouttext /><endouttext />
646: </foil>
647: </foilgroup>
648: <hintgroup>
649: <startouttext /><endouttext />
650: </hintgroup>
651: </rankresponse>';
652: }
653:
654: sub insert_matchresponse {
655: return '
656: <matchresponse max="10">
657: <foilgroup options="">
658: <itemgroup>
659: </itemgroup>
660: <foil>
661: <startouttext /><endouttext />
662: </foil>
663: </foilgroup>
664: <hintgroup>
665: <startouttext /><endouttext />
666: </hintgroup>
667: </matchresponse>';
668: }
669:
670: sub insert_startpartmarker { return '<startpartmarker />'; }
671: sub insert_endpartmarker { return '<endpartmarker />'; }
672:
673: sub insert_displayduedate { return '<displayduedate />'; }
674: sub insert_displaytitle { return '<displaytitle />'; }
675: sub insert_hintpart {
676: return '
677: <hintpart on="default">
678: <startouttext/><endouttext />
679: </hintpart>';
680: }
681:
682: sub insert_hintgroup {
683: return '
684: <hintgroup>
685: <startouttext /><endouttext />
686: </hintgroup>';
687: }
688:
689: sub insert_numericalhint {
690: return '
691: <numericalhint>
692: </numericalhint>';
693: }
694:
695: sub insert_reactionhint {
696: return '
697: <reactionhint>
698: </reactionhint>';
699: }
700:
701: sub insert_organichint {
702: return '
703: <organichint>
704: </organichint>';
705: }
706:
707: sub insert_stringhint {
708: return '
709: <stringhint>
710: </stringhint>';
711: }
712:
713: sub insert_formulahint {
714: return '
715: <formulahint>
716: </formulahint>';
717: }
718:
719: sub insert_radiobuttonhint {
720: return '
721: <radiobuttonhint>
722: </radiobuttonhint>';
723: }
724:
725: sub insert_optionhint {
726: return '
727: <optionhint>
728: </optionhint>';
729: }
730:
731: sub insert_startouttext {
732: return "<startouttext /><endouttext />";
733: }
734:
735: sub insert_script {
736: return "\n<script type=\"loncapa/perl\"></script>";
737: }
738:
739: sub js_change_detection {
740: my $unsaved=&mt("There are unsaved changes");
741: return (<<SCRIPT);
742: <script type="text/javascript">
743: var clean = true;
744: var is_submit = false;
745: var still_ask = false;
746: function compareForm(event_) {
747: if (!event_ && window.event) {
748: event_ = window.event;
749: }
750: if ((!is_submit || (is_submit && still_ask)) && !clean) {
751: still_ask = false;
752: is_submit = false;
753: event_.returnValue = "$unsaved";
754: return "$unsaved";
755: }
756: }
757: function unClean() {
758: clean=false;
759: }
760: window.onbeforeunload = compareForm;
761: </script>
762: SCRIPT
763: }
764:
765: sub form_change_detection {
766: return ' onsubmit="is_submit=true;" ';
767: }
768:
769: sub element_change_detection {
770: return ' onchange="unClean();" ';
771: }
772:
773: sub submit_ask_anyway {
774: my ($extra_action) = @_;
775: return ' onclick="still_ask=true;'.$extra_action.'" ';
776: }
777:
778: sub submit_dont_ask {
779: my ($extra_action) = @_;
780: return ' onclick="is_submit=true;'.$extra_action.'" ';
781: }
782:
783:
784: sub textarea_sizes {
785: my ($data)=@_;
786: my $count=0;
787: my $maxlength=-1;
788: foreach (split ("\n", $$data)) {
789: $count+=int(length($_)/79);
790: $count++;
791: if (length($_) > $maxlength) { $maxlength = length($_); }
792: }
793: my $rows = $count;
794: my $cols = $maxlength;
795: return ($rows,$cols);
796: }
797:
798: sub editline {
799: my ($tag,$data,$description,$size)=@_;
800: $data=&HTML::Entities::encode($data,'<>&"');
801: if ($description) { $description=$description."<br />"; }
802: my $change_code = &element_change_detection();
803: my $result = <<"END";
804: $description
805: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
806: value="$data" size="$size" $change_code />
807: END
808: return $result;
809: }
810:
811: sub editfield {
812: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
813:
814: my ($rows,$cols)=&textarea_sizes(\$data);
815: my $textareaclass;
816:
817: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
818: $rows+=7; # make room for HTMLarea
819: $minheight+=7; # make room for HTMLarea
820: $textareaclass = ' class="LC_richDefaultOff"';
821: }
822: if ($cols > 80) { $cols = 80; }
823: if ($cols < $minwidth ) { $cols = $minwidth; }
824: if ($rows < $minheight) { $rows = $minheight; }
825: if ($description) { $description=$description."<br />"; }
826:
827: # remove typesetting whitespace from between data and the end tag
828: # to make the edit look prettier
829: $data =~ s/\n?[ \t]*$//;
830:
831: return $description."\n".'<textarea style="width:99%" rows="'.$rows.
832: '" cols="'.$cols.'" name="homework_edit_'.
833: $Apache::lonxml::curdepth.'" id="homework_edit_'.
834: $Apache::lonxml::curdepth.'" '.&element_change_detection().
835: $textareaclass.'>'.
836: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
837: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
838: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
839: }
840:
841: sub modifiedfield {
842: my ($endtag,$parser) = @_;
843: my $result;
844: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
845: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
846: # textareas throw away intial \n
847: if ($bodytext=~/^\n/) {
848: $result="\n".$result;
849: }
850: # if there is typesetting whitespace from between the data and the end tag
851: # restore to keep the source looking pretty
852: if ($bodytext =~ /(\n?[ \t]*)$/) {
853: $result .= $1;
854: }
855: return $result;
856: }
857:
858: # Returns a 1 if the token has been modified and you should rebuild the tag
859: # side-effects, will modify the $token if new values are found
860: sub get_new_args {
861: my ($token,$parstack,$safeeval,@args)=@_;
862: my $rebuild=0;
863: foreach my $arg (@args) {
864: #just want the string that it was set to
865: my $value=$token->[2]->{$arg};
866: my $element=&html_element_name($arg);
867: my $newvalue=$env{"form.$element"};
868: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
869: if (defined($newvalue) && $value ne $newvalue) {
870: if (ref($newvalue) eq 'ARRAY') {
871: $token->[2]->{$arg}=join(',',@$newvalue);
872: } else {
873: $token->[2]->{$arg}=$newvalue;
874: }
875: $rebuild=1;
876: # add new attributes to the of the attribute seq
877: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
878: push(@{ $token->[3] },$arg);
879: }
880: } elsif (!defined($newvalue) && defined($value)) {
881: delete($token->[2]->{$arg});
882: $rebuild=1;
883: }
884: }
885: return $rebuild;
886: }
887:
888: # looks for /> on start tags
889: sub rebuild_tag {
890: my ($token) = @_;
891: my $result;
892: if ($token->[0] eq 'S') {
893: $result = '<'.$token->[1];
894: foreach my $attribute (@{ $token->[3] }) {
895: my $value = $token->[2]{$attribute};
896: next if ($value eq '');
897: $value =~s/^\s+|\s+$//g;
898: $value =~s/\"//g;
899: &Apache::lonxml::debug("setting :$attribute: to :$value:");
900: $result.=' '.$attribute.'="'.$value.'"';
901: }
902: if ($token->[4] =~ m:/>$:) {
903: $result.=' />';
904: } else {
905: $result.='>';
906: }
907: } elsif ( $token->[0] eq 'E' ) {
908: $result = '</'.$token->[1].'>';
909: }
910: return $result;
911: }
912:
913: sub html_element_name {
914: my ($name) = @_;
915: return $name.'_'.$Apache::lonxml::curdepth;
916: }
917:
918: sub hidden_arg {
919: my ($name,$token) = @_;
920: my $result;
921: my $arg=$token->[2]{$name};
922: $result='<input name="'.&html_element_name($name).
923: '" type="hidden" value="'.$arg.'" />';
924: return $result;
925: }
926:
927: sub checked_arg {
928: my ($description,$name,$list,$token) = @_;
929: my $result;
930: my $optionlist="";
931: my $allselected=$token->[2]{$name};
932: $result=&mt($description);
933: foreach my $option (@$list) {
934: my ($value,$text);
935: if ( ref($option) eq 'ARRAY') {
936: $value='value="'.$$option[0].'"';
937: $text=$$option[1];
938: $option=$$option[0];
939: } else {
940: $text=$option;
941: $value='value="'.$option.'"';
942: }
943: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
944: &html_element_name($name).'"';
945: foreach my $selected (split(/,/,$allselected)) {
946: if ( $selected eq $option ) {
947: $result.=' checked="checked" ';
948: last;
949: }
950: }
951: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
952: }
953: return $result;
954: }
955:
956: sub text_arg {
957: my ($description,$name,$token,$size) = @_;
958: my $result;
959: if (!defined $size) { $size=20; }
960: my $arg=$token->[2]{$name};
961: $result=&mt($description).' <input name="'.&html_element_name($name).
962: '" type="text" value="'.$arg.'" size="'.$size.'" '.
963: &element_change_detection().'/>';
964: return '<span class="LC_nobreak">'.$result.'</span>';
965: }
966:
967: sub select_arg {
968: my ($description,$name,$list,$token) = @_;
969: my $result;
970: my $optionlist="";
971: my $selected=$token->[2]{$name};
972: if (ref($list) eq 'ARRAY') {
973: foreach my $option (@{$list}) {
974: my ($text,$value);
975: if (ref($option) eq 'ARRAY') {
976: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
977: $text=$option->[1];
978: $option=$option->[0];
979: } else {
980: $text=$option;
981: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
982: }
983: if ( $selected eq $option ) {
984: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
985: } else {
986: $optionlist.="<option $value >".&mt($text)."</option>\n";
987: }
988: }
989: }
990: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
991: &html_element_name($name).'" '.&element_change_detection().' >
992: '.$optionlist.'
993: </select></span>';
994: return $result;
995: }
996:
997: sub select_or_text_arg {
998: my ($description,$name,$list,$token,$size) = @_;
999: my $result;
1000: my $optionlist="";
1001: my $found=0;
1002: my $selected=$token->[2]{$name};
1003: if (ref($list) eq 'ARRAY') {
1004: foreach my $option (@{$list}) {
1005: my ($text,$value);
1006: if (ref($option) eq 'ARRAY') {
1007: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
1008: $text=$option->[1];
1009: $option=$option->[0];
1010: } else {
1011: $text=$option;
1012: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
1013: }
1014: if ( $selected eq $option ) {
1015: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
1016: $found=1;
1017: } else {
1018: $optionlist.="<option $value>$text</option>\n";
1019: }
1020: }
1021: }
1022: $optionlist.="<option value=\"TYPEDINVALUE\"".
1023: ((!$found)?' selected="selected"':'').
1024: ">".&mt('Type-in value')."</option>\n";
1025: #
1026: my $change_code=&element_change_detection();
1027: my $element=&html_element_name($name);
1028: my $selectelement='select_list_'.$element;
1029: my $typeinelement='type_in_'.$element;
1030: my $typeinvalue=($found?'':$selected);
1031: #
1032: my $hiddenvalue='this.form.'.$element.'.value';
1033: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
1034: my $selectedvalue='this.form.'.$selectelement.
1035: '.options['.$selectedindex.'].value';
1036: my $typedinvalue='this.form.'.$typeinelement.'.value';
1037: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
1038: $description=&mt($description);
1039: #
1040: return (<<ENDSELECTORTYPE);
1041: <span class="LC_nobreak">
1042: $description
1043: <select name="$selectelement"
1044: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
1045: $optionlist
1046: </select>
1047: <input type="text" size="$size" name="$typeinelement"
1048: value="$typeinvalue"
1049: onChange="$hiddenvalue=$typedinvalue;"
1050: onFocus="$selectedindex=$selecttypeinindex-1;" />
1051: <input type="hidden" name="$element" value="$selected" $change_code />
1052: </span>
1053: ENDSELECTORTYPE
1054: }
1055:
1056: #----------------------------------------------------- image coordinates
1057: # single image coordinates, x, y
1058: sub entercoords {
1059: my ($idx,$idy,$mode,$width,$height) = @_;
1060: unless ($Apache::edit::bgimgsrc) { return ''; }
1061: if ($idx) { $idx.='_'; }
1062: if ($idy) { $idy.='_'; }
1063: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1064: my $form = 'lonhomework';
1065: my $element;
1066: if (! defined($mode) || $mode eq 'attribute') {
1067: $element = &escape("$Apache::lonxml::curdepth");
1068: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1069: $element = &escape('homework_edit_'.
1070: $Apache::lonxml::curdepth);
1071: }
1072: my $id=$Apache::lonxml::curdepth;
1073: my %data=("imagechoice.$id.type" =>'point',
1074: "imagechoice.$id.formname" =>$form,
1075: "imagechoice.$id.formx" =>"$idx$element",
1076: "imagechoice.$id.formy" =>"$idy$element",
1077: "imagechoice.$id.file" =>$bgfile,
1078: "imagechoice.$id.formcoord" =>$element);
1079: if ($height) {
1080: $data{"imagechoice.$id.formheight"}=$height.'_'.
1081: $Apache::edit::bgimgsrccurdepth;
1082: }
1083: if ($width) {
1084: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1085: $Apache::edit::bgimgsrccurdepth;
1086: }
1087: &Apache::lonnet::appenv(\%data);
1088: my $text="Click Coordinates";
1089: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1090: return $result;
1091: }
1092:
1093: # coordinates (x1,y1)-(x2,y2)...
1094: # mode can be either box, or polygon
1095: sub entercoord {
1096: my ($idx,$mode,$width,$height,$type) = @_;
1097: unless ($Apache::edit::bgimgsrc) { return ''; }
1098: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1099: my $form = 'lonhomework';
1100: my $element;
1101: if (! defined($mode) || $mode eq 'attribute') {
1102: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1103: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1104: $element = &escape('homework_edit_'.
1105: $Apache::lonxml::curdepth);
1106: }
1107: my $id=$Apache::lonxml::curdepth;
1108: my %data=("imagechoice.$id.type" =>$type,
1109: "imagechoice.$id.formname" =>$form,
1110: "imagechoice.$id.file" =>$bgfile,
1111: "imagechoice.$id.formcoord" =>$element);
1112: if ($height) {
1113: $data{"imagechoice.$id.formheight"}=$height.'_'.
1114: $Apache::edit::bgimgsrccurdepth;
1115: }
1116: if ($width) {
1117: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1118: $Apache::edit::bgimgsrccurdepth;
1119: }
1120: &Apache::lonnet::appenv(\%data);
1121: my $text="Enter Coordinates";
1122: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1123: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1124: return $result;
1125: }
1126:
1127: sub deletecoorddata {
1128: &Apache::lonnet::delenv('imagechoice.');
1129: }
1130:
1131: #----------------------------------------------------- browse
1132: sub browse {
1133: # insert a link to call up the filesystem browser (lonindexer)
1134: my ($id, $mode, $titleid, $only) = @_;
1135: my $form = 'lonhomework';
1136: my $element;
1137: if (! defined($mode) || $mode eq 'attribute') {
1138: $element = &escape("$id\_$Apache::lonxml::curdepth");
1139: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1140: $element = &escape('homework_edit_'.
1141: $Apache::lonxml::curdepth);
1142: }
1143: my $titleelement;
1144: if ($titleid) {
1145: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1146: } else {
1147: $titleelement=",'$only'";
1148: }
1149: my $result = <<"ENDBUTTON";
1150: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1151: ENDBUTTON
1152: return $result;
1153: }
1154:
1155: #----------------------------------------------------- browse
1156: sub search {
1157: # insert a link to call up the filesystem browser (lonindexer)
1158: my ($id, $mode, $titleid) = @_;
1159: my $form = 'lonhomework';
1160: my $element;
1161: if (! defined($mode) || $mode eq 'attribute') {
1162: $element = &escape("$id\_$Apache::lonxml::curdepth");
1163: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1164: $element = &escape('homework_edit_'.
1165: $Apache::lonxml::curdepth);
1166: }
1167: my $titleelement;
1168: if ($titleid) {
1169: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1170: }
1171: my $result = <<"ENDBUTTON";
1172: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1173: ENDBUTTON
1174: return $result;
1175: }
1176:
1177:
1178: 1;
1179: __END__
1180:
1181:
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