1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.131 2010/10/10 00:14:15 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: <spline />
404: <splinerule />
405: </functionplotresponse>';
406: }
407:
408: sub insert_spline {
409: return '
410: <spline />';
411: }
412:
413: sub insert_backgroundplot {
414: return '
415: <backgroundplot />';
416: }
417:
418: sub insert_splinerule {
419: return '
420: <splinerule />';
421: }
422:
423:
424:
425: sub insert_numericalresponse {
426: return '
427: <numericalresponse answer="">
428: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
429: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
430: <textline />
431: <hintgroup>
432: <startouttext /><endouttext />
433: </hintgroup>
434: </numericalresponse>';
435: }
436:
437: sub insert_customresponse {
438: return '
439: <customresponse>
440: <answer type="loncapa/perl">
441: </answer>
442: <textline />
443: <hintgroup>
444: <startouttext /><endouttext />
445: </hintgroup>
446: </customresponse>';
447: }
448:
449: sub insert_customresponse_answer {
450: return '
451: <answer type="loncapa/perl">
452: </answer>
453: ';
454: }
455:
456: sub insert_customhint {
457: return '
458: <customhint>
459: <answer type="loncapa/perl">
460: </answer>
461: </customhint>';
462: }
463:
464: sub insert_customhint_answer {
465: return '
466: <answer type="loncapa/perl">
467: </answer>
468: ';
469: }
470:
471: sub insert_mathresponse {
472: return '
473: <mathresponse>
474: <answer>
475: </answer>
476: <textline />
477: <hintgroup>
478: <startouttext />
479: <endouttext />
480: </hintgroup>
481: </mathresponse>';
482: }
483:
484: sub insert_mathresponse_answer {
485: return '
486: <answer>
487: </answer>
488: ';
489: }
490:
491: sub insert_mathhint {
492: return '
493: <mathhint>
494: <answer>
495: </answer>
496: </mathhint>';
497: }
498:
499: sub insert_mathhint_answer {
500: return '
501: <answer>
502: </answer>
503: ';
504: }
505:
506: sub insert_stringresponse {
507: return '
508: <stringresponse answer="" type="">
509: <textline />
510: <hintgroup>
511: <startouttext /><endouttext />
512: </hintgroup>
513: </stringresponse>';
514: }
515:
516: sub insert_essayresponse {
517: return '
518: <essayresponse>
519: <textfield></textfield>
520: </essayresponse>';
521: }
522:
523: sub insert_imageresponse {
524: return '
525: <imageresponse max="1">
526: <foilgroup>
527: <foil>
528: </foil>
529: </foilgroup>
530: <hintgroup>
531: <startouttext /><endouttext />
532: </hintgroup>
533: </imageresponse>';
534: }
535:
536: sub insert_optionresponse {
537: return '
538: <optionresponse max="10">
539: <foilgroup options="">
540: <foil>
541: <startouttext /><endouttext />
542: </foil>
543: </foilgroup>
544: <hintgroup>
545: <startouttext /><endouttext />
546: </hintgroup>
547: </optionresponse>';
548: }
549:
550: sub insert_organicresponse {
551: return '
552: <organicresponse>
553: <textline />
554: <hintgroup>
555: <startouttext /><endouttext />
556: </hintgroup>
557: </organicresponse>';
558: }
559:
560: sub insert_organicstructure {
561: return '
562: <organicstructure />
563: ';
564: }
565:
566: sub insert_radiobuttonresponse {
567: return '
568: <radiobuttonresponse max="10">
569: <foilgroup>
570: <foil>
571: <startouttext /><endouttext />
572: </foil>
573: </foilgroup>
574: <hintgroup>
575: <startouttext /><endouttext />
576: </hintgroup>
577: </radiobuttonresponse>';
578: }
579:
580: sub insert_reactionresponse {
581: return '
582: <reactionresponse>
583: <textline />
584: <hintgroup>
585: <startouttext /><endouttext />
586: </hintgroup>
587: </reactionresponse>';
588: }
589:
590: sub insert_rankresponse {
591: return '
592: <rankresponse max="10">
593: <foilgroup options="">
594: <foil>
595: <startouttext /><endouttext />
596: </foil>
597: </foilgroup>
598: <hintgroup>
599: <startouttext /><endouttext />
600: </hintgroup>
601: </rankresponse>';
602: }
603:
604: sub insert_matchresponse {
605: return '
606: <matchresponse max="10">
607: <foilgroup options="">
608: <itemgroup>
609: </itemgroup>
610: <foil>
611: <startouttext /><endouttext />
612: </foil>
613: </foilgroup>
614: <hintgroup>
615: <startouttext /><endouttext />
616: </hintgroup>
617: </matchresponse>';
618: }
619:
620: sub insert_startpartmarker { return '<startpartmarker />'; }
621: sub insert_endpartmarker { return '<endpartmarker />'; }
622:
623: sub insert_displayduedate { return '<displayduedate />'; }
624: sub insert_displaytitle { return '<displaytitle />'; }
625: sub insert_hintpart {
626: return '
627: <hintpart on="default">
628: <startouttext/><endouttext />
629: </hintpart>';
630: }
631:
632: sub insert_hintgroup {
633: return '
634: <hintgroup>
635: <startouttext /><endouttext />
636: </hintgroup>';
637: }
638:
639: sub insert_numericalhint {
640: return '
641: <numericalhint>
642: </numericalhint>';
643: }
644:
645: sub insert_reactionhint {
646: return '
647: <reactionhint>
648: </reactionhint>';
649: }
650:
651: sub insert_organichint {
652: return '
653: <organichint>
654: </organichint>';
655: }
656:
657: sub insert_stringhint {
658: return '
659: <stringhint>
660: </stringhint>';
661: }
662:
663: sub insert_formulahint {
664: return '
665: <formulahint>
666: </formulahint>';
667: }
668:
669: sub insert_radiobuttonhint {
670: return '
671: <radiobuttonhint>
672: </radiobuttonhint>';
673: }
674:
675: sub insert_optionhint {
676: return '
677: <optionhint>
678: </optionhint>';
679: }
680:
681: sub insert_startouttext {
682: return "<startouttext /><endouttext />";
683: }
684:
685: sub insert_script {
686: return "\n<script type=\"loncapa/perl\"></script>";
687: }
688:
689: sub js_change_detection {
690: my $unsaved=&mt("There are unsaved changes");
691: return (<<SCRIPT);
692: <script type="text/javascript">
693: var clean = true;
694: var is_submit = false;
695: var still_ask = false;
696: function compareForm(event_) {
697: if (!event_ && window.event) {
698: event_ = window.event;
699: }
700: if ((!is_submit || (is_submit && still_ask)) && !clean) {
701: still_ask = false;
702: is_submit = false;
703: event_.returnValue = "$unsaved";
704: return "$unsaved";
705: }
706: }
707: function unClean() {
708: clean=false;
709: }
710: window.onbeforeunload = compareForm;
711: </script>
712: SCRIPT
713: }
714:
715: sub form_change_detection {
716: return ' onsubmit="is_submit=true;" ';
717: }
718:
719: sub element_change_detection {
720: return ' onchange="unClean();" ';
721: }
722:
723: sub submit_ask_anyway {
724: my ($extra_action) = @_;
725: return ' onclick="still_ask=true;'.$extra_action.'" ';
726: }
727:
728: sub textarea_sizes {
729: my ($data)=@_;
730: my $count=0;
731: my $maxlength=-1;
732: foreach (split ("\n", $$data)) {
733: $count+=int(length($_)/79);
734: $count++;
735: if (length($_) > $maxlength) { $maxlength = length($_); }
736: }
737: my $rows = $count;
738: my $cols = $maxlength;
739: return ($rows,$cols);
740: }
741:
742: sub editline {
743: my ($tag,$data,$description,$size)=@_;
744: $data=&HTML::Entities::encode($data,'<>&"');
745: if ($description) { $description=$description."<br />"; }
746: my $change_code = &element_change_detection();
747: my $result = <<"END";
748: $description
749: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
750: value="$data" size="$size" $change_code />
751: END
752: return $result;
753: }
754:
755: sub editfield {
756: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
757:
758: my ($rows,$cols)=&textarea_sizes(\$data);
759: my $textareaclass;
760:
761: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
762: $rows+=7; # make room for HTMLarea
763: $minheight+=7; # make room for HTMLarea
764: $textareaclass = ' class="LC_richDefaultOff"';
765: }
766: if ($cols > 80) { $cols = 80; }
767: if ($cols < $minwidth ) { $cols = $minwidth; }
768: if ($rows < $minheight) { $rows = $minheight; }
769: if ($description) { $description=$description."<br />"; }
770:
771: # remove typesetting whitespace from between data and the end tag
772: # to make the edit look prettier
773: $data =~ s/\n?[ \t]*$//;
774:
775: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
776: '" cols="'.$cols.'" name="homework_edit_'.
777: $Apache::lonxml::curdepth.'" id="homework_edit_'.
778: $Apache::lonxml::curdepth.'" '.&element_change_detection().
779: $textareaclass.'>'.
780: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
781: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
782: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
783: }
784:
785: sub modifiedfield {
786: my ($endtag,$parser) = @_;
787: my $result;
788: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
789: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
790: # textareas throw away intial \n
791: if ($bodytext=~/^\n/) {
792: $result="\n".$result;
793: }
794: # if there is typesetting whitespace from between the data and the end tag
795: # restore to keep the source looking pretty
796: if ($bodytext =~ /(\n?[ \t]*)$/) {
797: $result .= $1;
798: }
799: return $result;
800: }
801:
802: # Returns a 1 if the token has been modified and you should rebuild the tag
803: # side-effects, will modify the $token if new values are found
804: sub get_new_args {
805: my ($token,$parstack,$safeeval,@args)=@_;
806: my $rebuild=0;
807: foreach my $arg (@args) {
808: #just want the string that it was set to
809: my $value=$token->[2]->{$arg};
810: my $element=&html_element_name($arg);
811: my $newvalue=$env{"form.$element"};
812: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
813: if (defined($newvalue) && $value ne $newvalue) {
814: if (ref($newvalue) eq 'ARRAY') {
815: $token->[2]->{$arg}=join(',',@$newvalue);
816: } else {
817: $token->[2]->{$arg}=$newvalue;
818: }
819: $rebuild=1;
820: # add new attributes to the of the attribute seq
821: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
822: push(@{ $token->[3] },$arg);
823: }
824: } elsif (!defined($newvalue) && defined($value)) {
825: delete($token->[2]->{$arg});
826: $rebuild=1;
827: }
828: }
829: return $rebuild;
830: }
831:
832: # looks for /> on start tags
833: sub rebuild_tag {
834: my ($token) = @_;
835: my $result;
836: if ($token->[0] eq 'S') {
837: $result = '<'.$token->[1];
838: foreach my $attribute (@{ $token->[3] }) {
839: my $value = $token->[2]{$attribute};
840: next if ($value eq '');
841: $value =~s/^\s+|\s+$//g;
842: $value =~s/\"//g;
843: &Apache::lonxml::debug("setting :$attribute: to :$value:");
844: $result.=' '.$attribute.'="'.$value.'"';
845: }
846: if ($token->[4] =~ m:/>$:) {
847: $result.=' />';
848: } else {
849: $result.='>';
850: }
851: } elsif ( $token->[0] eq 'E' ) {
852: $result = '</'.$token->[1].'>';
853: }
854: return $result;
855: }
856:
857: sub html_element_name {
858: my ($name) = @_;
859: return $name.'_'.$Apache::lonxml::curdepth;
860: }
861:
862: sub hidden_arg {
863: my ($name,$token) = @_;
864: my $result;
865: my $arg=$token->[2]{$name};
866: $result='<input name="'.&html_element_name($name).
867: '" type="hidden" value="'.$arg.'" />';
868: return $result;
869: }
870:
871: sub checked_arg {
872: my ($description,$name,$list,$token) = @_;
873: my $result;
874: my $optionlist="";
875: my $allselected=$token->[2]{$name};
876: $result=&mt($description);
877: foreach my $option (@$list) {
878: my ($value,$text);
879: if ( ref($option) eq 'ARRAY') {
880: $value='value="'.$$option[0].'"';
881: $text=$$option[1];
882: $option=$$option[0];
883: } else {
884: $text=$option;
885: $value='value="'.$option.'"';
886: }
887: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
888: &html_element_name($name).'"';
889: foreach my $selected (split(/,/,$allselected)) {
890: if ( $selected eq $option ) {
891: $result.=' checked="checked" ';
892: last;
893: }
894: }
895: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
896: }
897: return $result;
898: }
899:
900: sub text_arg {
901: my ($description,$name,$token,$size) = @_;
902: my $result;
903: if (!defined $size) { $size=20; }
904: my $arg=$token->[2]{$name};
905: $result=&mt($description).' <input name="'.&html_element_name($name).
906: '" type="text" value="'.$arg.'" size="'.$size.'" '.
907: &element_change_detection().'/>';
908: return '<span class="LC_nobreak">'.$result.'</span>';
909: }
910:
911: sub select_arg {
912: my ($description,$name,$list,$token) = @_;
913: my $result;
914: my $optionlist="";
915: my $selected=$token->[2]{$name};
916: if (ref($list) eq 'ARRAY') {
917: foreach my $option (@{$list}) {
918: my ($text,$value);
919: if (ref($option) eq 'ARRAY') {
920: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
921: $text=$option->[1];
922: $option=$option->[0];
923: } else {
924: $text=$option;
925: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
926: }
927: if ( $selected eq $option ) {
928: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
929: } else {
930: $optionlist.="<option $value >".&mt($text)."</option>\n";
931: }
932: }
933: }
934: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
935: &html_element_name($name).'" '.&element_change_detection().' >
936: '.$optionlist.'
937: </select></span>';
938: return $result;
939: }
940:
941: sub select_or_text_arg {
942: my ($description,$name,$list,$token,$size) = @_;
943: my $result;
944: my $optionlist="";
945: my $found=0;
946: my $selected=$token->[2]{$name};
947: if (ref($list) eq 'ARRAY') {
948: foreach my $option (@{$list}) {
949: my ($text,$value);
950: if (ref($option) eq 'ARRAY') {
951: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
952: $text=$option->[1];
953: $option=$option->[0];
954: } else {
955: $text=$option;
956: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
957: }
958: if ( $selected eq $option ) {
959: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
960: $found=1;
961: } else {
962: $optionlist.="<option $value>$text</option>\n";
963: }
964: }
965: }
966: $optionlist.="<option value=\"TYPEDINVALUE\"".
967: ((!$found)?' selected="selected"':'').
968: ">".&mt('Type-in value')."</option>\n";
969: #
970: my $change_code=&element_change_detection();
971: my $element=&html_element_name($name);
972: my $selectelement='select_list_'.$element;
973: my $typeinelement='type_in_'.$element;
974: my $typeinvalue=($found?'':$selected);
975: #
976: my $hiddenvalue='this.form.'.$element.'.value';
977: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
978: my $selectedvalue='this.form.'.$selectelement.
979: '.options['.$selectedindex.'].value';
980: my $typedinvalue='this.form.'.$typeinelement.'.value';
981: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
982: $description=&mt($description);
983: #
984: return (<<ENDSELECTORTYPE);
985: <span class="LC_nobreak">
986: $description
987: <select name="$selectelement"
988: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
989: $optionlist
990: </select>
991: <input type="text" size="$size" name="$typeinelement"
992: value="$typeinvalue"
993: onChange="$hiddenvalue=$typedinvalue;"
994: onFocus="$selectedindex=$selecttypeinindex-1;" />
995: <input type="hidden" name="$element" value="$selected" $change_code />
996: </span>
997: ENDSELECTORTYPE
998: }
999:
1000: #----------------------------------------------------- image coordinates
1001: # single image coordinates, x, y
1002: sub entercoords {
1003: my ($idx,$idy,$mode,$width,$height) = @_;
1004: unless ($Apache::edit::bgimgsrc) { return ''; }
1005: if ($idx) { $idx.='_'; }
1006: if ($idy) { $idy.='_'; }
1007: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1008: my $form = 'lonhomework';
1009: my $element;
1010: if (! defined($mode) || $mode eq 'attribute') {
1011: $element = &escape("$Apache::lonxml::curdepth");
1012: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1013: $element = &escape('homework_edit_'.
1014: $Apache::lonxml::curdepth);
1015: }
1016: my $id=$Apache::lonxml::curdepth;
1017: my %data=("imagechoice.$id.type" =>'point',
1018: "imagechoice.$id.formname" =>$form,
1019: "imagechoice.$id.formx" =>"$idx$element",
1020: "imagechoice.$id.formy" =>"$idy$element",
1021: "imagechoice.$id.file" =>$bgfile,
1022: "imagechoice.$id.formcoord" =>$element);
1023: if ($height) {
1024: $data{"imagechoice.$id.formheight"}=$height.'_'.
1025: $Apache::edit::bgimgsrccurdepth;
1026: }
1027: if ($width) {
1028: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1029: $Apache::edit::bgimgsrccurdepth;
1030: }
1031: &Apache::lonnet::appenv(\%data);
1032: my $text="Click Coordinates";
1033: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1034: return $result;
1035: }
1036:
1037: # coordinates (x1,y1)-(x2,y2)...
1038: # mode can be either box, or polygon
1039: sub entercoord {
1040: my ($idx,$mode,$width,$height,$type) = @_;
1041: unless ($Apache::edit::bgimgsrc) { return ''; }
1042: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1043: my $form = 'lonhomework';
1044: my $element;
1045: if (! defined($mode) || $mode eq 'attribute') {
1046: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1047: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1048: $element = &escape('homework_edit_'.
1049: $Apache::lonxml::curdepth);
1050: }
1051: my $id=$Apache::lonxml::curdepth;
1052: my %data=("imagechoice.$id.type" =>$type,
1053: "imagechoice.$id.formname" =>$form,
1054: "imagechoice.$id.file" =>$bgfile,
1055: "imagechoice.$id.formcoord" =>$element);
1056: if ($height) {
1057: $data{"imagechoice.$id.formheight"}=$height.'_'.
1058: $Apache::edit::bgimgsrccurdepth;
1059: }
1060: if ($width) {
1061: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1062: $Apache::edit::bgimgsrccurdepth;
1063: }
1064: &Apache::lonnet::appenv(\%data);
1065: my $text="Enter Coordinates";
1066: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1067: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1068: return $result;
1069: }
1070:
1071: sub deletecoorddata {
1072: &Apache::lonnet::delenv('imagechoice.');
1073: }
1074:
1075: #----------------------------------------------------- browse
1076: sub browse {
1077: # insert a link to call up the filesystem browser (lonindexer)
1078: my ($id, $mode, $titleid, $only) = @_;
1079: my $form = 'lonhomework';
1080: my $element;
1081: if (! defined($mode) || $mode eq 'attribute') {
1082: $element = &escape("$id\_$Apache::lonxml::curdepth");
1083: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1084: $element = &escape('homework_edit_'.
1085: $Apache::lonxml::curdepth);
1086: }
1087: my $titleelement;
1088: if ($titleid) {
1089: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1090: } else {
1091: $titleelement=",'$only'";
1092: }
1093: my $result = <<"ENDBUTTON";
1094: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1095: ENDBUTTON
1096: return $result;
1097: }
1098:
1099: #----------------------------------------------------- browse
1100: sub search {
1101: # insert a link to call up the filesystem browser (lonindexer)
1102: my ($id, $mode, $titleid) = @_;
1103: my $form = 'lonhomework';
1104: my $element;
1105: if (! defined($mode) || $mode eq 'attribute') {
1106: $element = &escape("$id\_$Apache::lonxml::curdepth");
1107: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1108: $element = &escape('homework_edit_'.
1109: $Apache::lonxml::curdepth);
1110: }
1111: my $titleelement;
1112: if ($titleid) {
1113: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1114: }
1115: my $result = <<"ENDBUTTON";
1116: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1117: ENDBUTTON
1118: return $result;
1119: }
1120:
1121:
1122: 1;
1123: __END__
1124:
1125:
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