1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.123.4.1 2010/01/31 00:47:41 raeburn 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="5" cellpadding="3">';
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 $result;
233: }
234:
235: sub start_spanning_row { return '<tr><td colspan="5" bgcolor="#DDDDDD">';}
236: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
237: sub end_row { return '</td></tr>'; }
238:
239: sub movebuttons {
240: my ($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>\n$inset</$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_numericalresponse {
401: return '
402: <numericalresponse answer="">
403: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
404: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
405: <textline />
406: <hintgroup>
407: <startouttext /><endouttext />
408: </hintgroup>
409: </numericalresponse>';
410: }
411:
412: sub insert_customresponse {
413: return '
414: <customresponse>
415: <answer type="loncapa/perl">
416: </answer>
417: <textline />
418: <hintgroup>
419: <startouttext /><endouttext />
420: </hintgroup>
421: </customresponse>';
422: }
423:
424: sub insert_customresponse_answer {
425: return '
426: <answer type="loncapa/perl">
427: </answer>
428: ';
429: }
430:
431: sub insert_customhint {
432: return '
433: <customhint>
434: <answer type="loncapa/perl">
435: </answer>
436: </customhint>';
437: }
438:
439: sub insert_customhint_answer {
440: return '
441: <answer type="loncapa/perl">
442: </answer>
443: ';
444: }
445:
446: sub insert_mathresponse {
447: return '
448: <mathresponse>
449: <answer>
450: </answer>
451: <textline />
452: <hintgroup>
453: <startouttext />
454: <endouttext />
455: </hintgroup>
456: </mathresponse>';
457: }
458:
459: sub insert_mathresponse_answer {
460: return '
461: <answer>
462: </answer>
463: ';
464: }
465:
466: sub insert_mathhint {
467: return '
468: <mathhint>
469: <answer>
470: </answer>
471: </mathhint>';
472: }
473:
474: sub insert_mathhint_answer {
475: return '
476: <answer>
477: </answer>
478: ';
479: }
480:
481: sub insert_stringresponse {
482: return '
483: <stringresponse answer="" type="">
484: <textline />
485: <hintgroup>
486: <startouttext /><endouttext />
487: </hintgroup>
488: </stringresponse>';
489: }
490:
491: sub insert_essayresponse {
492: return '
493: <essayresponse>
494: <textfield></textfield>
495: </essayresponse>';
496: }
497:
498: sub insert_imageresponse {
499: return '
500: <imageresponse max="1">
501: <foilgroup>
502: <foil>
503: </foil>
504: </foilgroup>
505: <hintgroup>
506: <startouttext /><endouttext />
507: </hintgroup>
508: </imageresponse>';
509: }
510:
511: sub insert_optionresponse {
512: return '
513: <optionresponse max="10">
514: <foilgroup options="">
515: <foil>
516: <startouttext /><endouttext />
517: </foil>
518: </foilgroup>
519: <hintgroup>
520: <startouttext /><endouttext />
521: </hintgroup>
522: </optionresponse>';
523: }
524:
525: sub insert_organicresponse {
526: return '
527: <organicresponse>
528: <textline />
529: <hintgroup>
530: <startouttext /><endouttext />
531: </hintgroup>
532: </organicresponse>';
533: }
534:
535: sub insert_organicstructure {
536: return '
537: <organicstructure />
538: ';
539: }
540:
541: sub insert_radiobuttonresponse {
542: return '
543: <radiobuttonresponse max="10">
544: <foilgroup>
545: <foil>
546: <startouttext /><endouttext />
547: </foil>
548: </foilgroup>
549: <hintgroup>
550: <startouttext /><endouttext />
551: </hintgroup>
552: </radiobuttonresponse>';
553: }
554:
555: sub insert_reactionresponse {
556: return '
557: <reactionresponse>
558: <textline />
559: <hintgroup>
560: <startouttext /><endouttext />
561: </hintgroup>
562: </reactionresponse>';
563: }
564:
565: sub insert_rankresponse {
566: return '
567: <rankresponse max="10">
568: <foilgroup options="">
569: <foil>
570: <startouttext /><endouttext />
571: </foil>
572: </foilgroup>
573: <hintgroup>
574: <startouttext /><endouttext />
575: </hintgroup>
576: </rankresponse>';
577: }
578:
579: sub insert_matchresponse {
580: return '
581: <matchresponse max="10">
582: <foilgroup options="">
583: <itemgroup>
584: </itemgroup>
585: <foil>
586: <startouttext /><endouttext />
587: </foil>
588: </foilgroup>
589: <hintgroup>
590: <startouttext /><endouttext />
591: </hintgroup>
592: </matchresponse>';
593: }
594:
595: sub insert_displayduedate { return '<displayduedate />'; }
596: sub insert_displaytitle { return '<displaytitle />'; }
597: sub insert_hintpart {
598: return '
599: <hintpart on="default">
600: <startouttext/><endouttext />
601: </hintpart>';
602: }
603:
604: sub insert_hintgroup {
605: return '
606: <hintgroup>
607: <startouttext /><endouttext />
608: </hintgroup>';
609: }
610:
611: sub insert_numericalhint {
612: return '
613: <numericalhint>
614: </numericalhint>';
615: }
616:
617: sub insert_reactionhint {
618: return '
619: <reactionhint>
620: </reactionhint>';
621: }
622:
623: sub insert_organichint {
624: return '
625: <organichint>
626: </organichint>';
627: }
628:
629: sub insert_stringhint {
630: return '
631: <stringhint>
632: </stringhint>';
633: }
634:
635: sub insert_formulahint {
636: return '
637: <formulahint>
638: </formulahint>';
639: }
640:
641: sub insert_radiobuttonhint {
642: return '
643: <radiobuttonhint>
644: </radiobuttonhint>';
645: }
646:
647: sub insert_optionhint {
648: return '
649: <optionhint>
650: </optionhint>';
651: }
652:
653: sub insert_startouttext {
654: return "<startouttext /><endouttext />";
655: }
656:
657: sub insert_script {
658: return "\n<script type=\"loncapa/perl\"></script>";
659: }
660:
661: sub js_change_detection {
662: my $unsaved=&mt("There are unsaved changes");
663: return (<<SCRIPT);
664: <script type="text/javascript">
665: var clean = true;
666: var is_submit = false;
667: var still_ask = false;
668: function compareForm(event_) {
669: if (!event_ && window.event) {
670: event_ = window.event;
671: }
672: if ((!is_submit || (is_submit && still_ask)) && !clean) {
673: still_ask = false;
674: is_submit = false;
675: event_.returnValue = "$unsaved";
676: return "$unsaved";
677: }
678: }
679: function unClean() {
680: clean=false;
681: }
682: window.onbeforeunload = compareForm;
683: </script>
684: SCRIPT
685: }
686:
687: sub form_change_detection {
688: return ' onsubmit="is_submit=true;" ';
689: }
690:
691: sub element_change_detection {
692: return ' onchange="unClean();" ';
693: }
694:
695: sub submit_ask_anyway {
696: my ($extra_action) = @_;
697: return ' onclick="still_ask=true;'.$extra_action.'" ';
698: }
699:
700: sub textarea_sizes {
701: my ($data)=@_;
702: my $count=0;
703: my $maxlength=-1;
704: foreach (split ("\n", $$data)) {
705: $count+=int(length($_)/79);
706: $count++;
707: if (length($_) > $maxlength) { $maxlength = length($_); }
708: }
709: my $rows = $count;
710: my $cols = $maxlength;
711: return ($rows,$cols);
712: }
713:
714: sub editline {
715: my ($tag,$data,$description,$size)=@_;
716: $data=&HTML::Entities::encode($data,'<>&"');
717: if ($description) { $description=$description."<br />"; }
718: my $change_code = &element_change_detection();
719: my $result = <<"END";
720: $description
721: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
722: value="$data" size="$size" $change_code />
723: END
724: return $result;
725: }
726:
727: sub editfield {
728: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
729:
730: my ($rows,$cols)=&textarea_sizes(\$data);
731: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
732: !&Apache::lonhtmlcommon::htmlareablocked()) {
733: $rows+=7; # make room for HTMLarea
734: $minheight+=7; # make room for HTMLarea
735: }
736: if ($cols > 80) { $cols = 80; }
737: if ($cols < $minwidth ) { $cols = $minwidth; }
738: if ($rows < $minheight) { $rows = $minheight; }
739: if ($description) { $description=$description."<br />"; }
740: if ($usehtmlarea) {
741: &Apache::lonhtmlcommon::add_htmlareafields('homework_edit_'.
742: $Apache::lonxml::curdepth);
743: }
744: # remove typesetting whitespace from between data and the end tag
745: # to make the edit look prettier
746: $data =~ s/\n?[ \t]*$//;
747:
748: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
749: '" cols="'.$cols.'" name="homework_edit_'.
750: $Apache::lonxml::curdepth.'" id="homework_edit_'.
751: $Apache::lonxml::curdepth.'" '.&element_change_detection().'>'.
752: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
753: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
754: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
755: }
756:
757: sub modifiedfield {
758: my ($endtag,$parser) = @_;
759: my $result;
760: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
761: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
762: # textareas throw away intial \n
763: if ($bodytext=~/^\n/) {
764: $result="\n".$result;
765: }
766: # if there is typesetting whitespace from between the data and the end tag
767: # restore to keep the source looking pretty
768: if ($bodytext =~ /(\n?[ \t]*)$/) {
769: $result .= $1;
770: }
771: return $result;
772: }
773:
774: # Returns a 1 if the token has been modified and you should rebuild the tag
775: # side-effects, will modify the $token if new values are found
776: sub get_new_args {
777: my ($token,$parstack,$safeeval,@args)=@_;
778: my $rebuild=0;
779: foreach my $arg (@args) {
780: #just want the string that it was set to
781: my $value=$token->[2]->{$arg};
782: my $element=&html_element_name($arg);
783: my $newvalue=$env{"form.$element"};
784: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
785: if (defined($newvalue) && $value ne $newvalue) {
786: if (ref($newvalue) eq 'ARRAY') {
787: $token->[2]->{$arg}=join(',',@$newvalue);
788: } else {
789: $token->[2]->{$arg}=$newvalue;
790: }
791: $rebuild=1;
792: # add new attributes to the of the attribute seq
793: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
794: push(@{ $token->[3] },$arg);
795: }
796: } elsif (!defined($newvalue) && defined($value)) {
797: delete($token->[2]->{$arg});
798: $rebuild=1;
799: }
800: }
801: return $rebuild;
802: }
803:
804: # looks for /> on start tags
805: sub rebuild_tag {
806: my ($token) = @_;
807: my $result;
808: if ($token->[0] eq 'S') {
809: $result = '<'.$token->[1];
810: foreach my $attribute (@{ $token->[3] }) {
811: my $value = $token->[2]{$attribute};
812: next if ($value eq '');
813: $value =~s/^\s+|\s+$//g;
814: $value =~s/\"//g;
815: &Apache::lonxml::debug("setting :$attribute: to :$value:");
816: $result.=' '.$attribute.'="'.$value.'"';
817: }
818: if ($token->[4] =~ m:/>$:) {
819: $result.=' />';
820: } else {
821: $result.='>';
822: }
823: } elsif ( $token->[0] eq 'E' ) {
824: $result = '</'.$token->[1].'>';
825: }
826: return $result;
827: }
828:
829: sub html_element_name {
830: my ($name) = @_;
831: return $name.'_'.$Apache::lonxml::curdepth;
832: }
833:
834: sub hidden_arg {
835: my ($name,$token) = @_;
836: my $result;
837: my $arg=$token->[2]{$name};
838: $result='<input name="'.&html_element_name($name).
839: '" type="hidden" value="'.$arg.'" />';
840: return $result;
841: }
842:
843: sub checked_arg {
844: my ($description,$name,$list,$token) = @_;
845: my $result;
846: my $optionlist="";
847: my $allselected=$token->[2]{$name};
848: $result=&mt($description);
849: foreach my $option (@$list) {
850: my ($value,$text);
851: if ( ref($option) eq 'ARRAY') {
852: $value='value="'.$$option[0].'"';
853: $text=$$option[1];
854: $option=$$option[0];
855: } else {
856: $text=$option;
857: $value='value="'.$option.'"';
858: }
859: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
860: &html_element_name($name).'"';
861: foreach my $selected (split(/,/,$allselected)) {
862: if ( $selected eq $option ) {
863: $result.=' checked="checked" ';
864: last;
865: }
866: }
867: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
868: }
869: return $result;
870: }
871:
872: sub text_arg {
873: my ($description,$name,$token,$size) = @_;
874: my $result;
875: if (!defined $size) { $size=20; }
876: my $arg=$token->[2]{$name};
877: $result=&mt($description).' <input name="'.&html_element_name($name).
878: '" type="text" value="'.$arg.'" size="'.$size.'" '.
879: &element_change_detection().'/>';
880: return '<span class="LC_nobreak">'.$result.'</span>';
881: }
882:
883: sub select_arg {
884: my ($description,$name,$list,$token) = @_;
885: my $result;
886: my $optionlist="";
887: my $selected=$token->[2]{$name};
888: if (ref($list) eq 'ARRAY') {
889: foreach my $option (@{$list}) {
890: my ($text,$value);
891: if (ref($option) eq 'ARRAY') {
892: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
893: $text=$option->[1];
894: $option=$option->[0];
895: } else {
896: $text=$option;
897: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
898: }
899: if ( $selected eq $option ) {
900: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
901: } else {
902: $optionlist.="<option $value >".&mt($text)."</option>\n";
903: }
904: }
905: }
906: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
907: &html_element_name($name).'" '.&element_change_detection().' >
908: '.$optionlist.'
909: </select></span>';
910: return $result;
911: }
912:
913: sub select_or_text_arg {
914: my ($description,$name,$list,$token,$size) = @_;
915: my $result;
916: my $optionlist="";
917: my $found=0;
918: my $selected=$token->[2]{$name};
919: if (ref($list) eq 'ARRAY') {
920: foreach my $option (@{$list}) {
921: my ($text,$value);
922: if (ref($option) eq 'ARRAY') {
923: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
924: $text=$option->[1];
925: $option=$option->[0];
926: } else {
927: $text=$option;
928: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
929: }
930: if ( $selected eq $option ) {
931: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
932: $found=1;
933: } else {
934: $optionlist.="<option $value>$text</option>\n";
935: }
936: }
937: }
938: $optionlist.="<option value=\"TYPEDINVALUE\"".
939: ((!$found)?' selected="selected"':'').
940: ">".&mt('Type-in value')."</option>\n";
941: #
942: my $change_code=&element_change_detection();
943: my $element=&html_element_name($name);
944: my $selectelement='select_list_'.$element;
945: my $typeinelement='type_in_'.$element;
946: my $typeinvalue=($found?'':$selected);
947: #
948: my $hiddenvalue='this.form.'.$element.'.value';
949: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
950: my $selectedvalue='this.form.'.$selectelement.
951: '.options['.$selectedindex.'].value';
952: my $typedinvalue='this.form.'.$typeinelement.'.value';
953: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
954: $description=&mt($description);
955: #
956: return (<<ENDSELECTORTYPE);
957: <span class="LC_nobreak">
958: $description
959: <select name="$selectelement"
960: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
961: $optionlist
962: </select>
963: <input type="text" size="$size" name="$typeinelement"
964: value="$typeinvalue"
965: onChange="$hiddenvalue=$typedinvalue;"
966: onFocus="$selectedindex=$selecttypeinindex-1;" />
967: <input type="hidden" name="$element" value="$selected" $change_code />
968: </span>
969: ENDSELECTORTYPE
970: }
971:
972: #----------------------------------------------------- image coordinates
973: # single image coordinates, x, y
974: sub entercoords {
975: my ($idx,$idy,$mode,$width,$height) = @_;
976: unless ($Apache::edit::bgimgsrc) { return ''; }
977: if ($idx) { $idx.='_'; }
978: if ($idy) { $idy.='_'; }
979: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
980: my $form = 'lonhomework';
981: my $element;
982: if (! defined($mode) || $mode eq 'attribute') {
983: $element = &escape("$Apache::lonxml::curdepth");
984: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
985: $element = &escape('homework_edit_'.
986: $Apache::lonxml::curdepth);
987: }
988: my $id=$Apache::lonxml::curdepth;
989: my %data=("imagechoice.$id.type" =>'point',
990: "imagechoice.$id.formname" =>$form,
991: "imagechoice.$id.formx" =>"$idx$element",
992: "imagechoice.$id.formy" =>"$idy$element",
993: "imagechoice.$id.file" =>$bgfile,
994: "imagechoice.$id.formcoord" =>$element);
995: if ($height) {
996: $data{"imagechoice.$id.formheight"}=$height.'_'.
997: $Apache::edit::bgimgsrccurdepth;
998: }
999: if ($width) {
1000: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1001: $Apache::edit::bgimgsrccurdepth;
1002: }
1003: &Apache::lonnet::appenv(\%data);
1004: my $text="Click Coordinates";
1005: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1006: return $result;
1007: }
1008:
1009: # coordinates (x1,y1)-(x2,y2)...
1010: # mode can be either box, or polygon
1011: sub entercoord {
1012: my ($idx,$mode,$width,$height,$type) = @_;
1013: unless ($Apache::edit::bgimgsrc) { return ''; }
1014: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1015: my $form = 'lonhomework';
1016: my $element;
1017: if (! defined($mode) || $mode eq 'attribute') {
1018: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1019: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1020: $element = &escape('homework_edit_'.
1021: $Apache::lonxml::curdepth);
1022: }
1023: my $id=$Apache::lonxml::curdepth;
1024: my %data=("imagechoice.$id.type" =>$type,
1025: "imagechoice.$id.formname" =>$form,
1026: "imagechoice.$id.file" =>$bgfile,
1027: "imagechoice.$id.formcoord" =>$element);
1028: if ($height) {
1029: $data{"imagechoice.$id.formheight"}=$height.'_'.
1030: $Apache::edit::bgimgsrccurdepth;
1031: }
1032: if ($width) {
1033: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1034: $Apache::edit::bgimgsrccurdepth;
1035: }
1036: &Apache::lonnet::appenv(\%data);
1037: my $text="Enter Coordinates";
1038: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1039: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1040: return $result;
1041: }
1042:
1043: sub deletecoorddata {
1044: &Apache::lonnet::delenv('imagechoice.');
1045: }
1046:
1047: #----------------------------------------------------- browse
1048: sub browse {
1049: # insert a link to call up the filesystem browser (lonindexer)
1050: my ($id, $mode, $titleid, $only) = @_;
1051: my $form = 'lonhomework';
1052: my $element;
1053: if (! defined($mode) || $mode eq 'attribute') {
1054: $element = &escape("$id\_$Apache::lonxml::curdepth");
1055: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1056: $element = &escape('homework_edit_'.
1057: $Apache::lonxml::curdepth);
1058: }
1059: my $titleelement;
1060: if ($titleid) {
1061: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1062: } else {
1063: $titleelement=",'$only'";
1064: }
1065: my $result = <<"ENDBUTTON";
1066: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1067: ENDBUTTON
1068: return $result;
1069: }
1070:
1071: #----------------------------------------------------- browse
1072: sub search {
1073: # insert a link to call up the filesystem browser (lonindexer)
1074: my ($id, $mode, $titleid) = @_;
1075: my $form = 'lonhomework';
1076: my $element;
1077: if (! defined($mode) || $mode eq 'attribute') {
1078: $element = &escape("$id\_$Apache::lonxml::curdepth");
1079: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1080: $element = &escape('homework_edit_'.
1081: $Apache::lonxml::curdepth);
1082: }
1083: my $titleelement;
1084: if ($titleid) {
1085: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1086: }
1087: my $result = <<"ENDBUTTON";
1088: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1089: ENDBUTTON
1090: return $result;
1091: }
1092:
1093:
1094: 1;
1095: __END__
1096:
1097:
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