1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.129 2010/09/27 22:15:32 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: </functionplotresponse>';
404: }
405:
406: sub insert_numericalresponse {
407: return '
408: <numericalresponse answer="">
409: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
410: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
411: <textline />
412: <hintgroup>
413: <startouttext /><endouttext />
414: </hintgroup>
415: </numericalresponse>';
416: }
417:
418: sub insert_customresponse {
419: return '
420: <customresponse>
421: <answer type="loncapa/perl">
422: </answer>
423: <textline />
424: <hintgroup>
425: <startouttext /><endouttext />
426: </hintgroup>
427: </customresponse>';
428: }
429:
430: sub insert_customresponse_answer {
431: return '
432: <answer type="loncapa/perl">
433: </answer>
434: ';
435: }
436:
437: sub insert_customhint {
438: return '
439: <customhint>
440: <answer type="loncapa/perl">
441: </answer>
442: </customhint>';
443: }
444:
445: sub insert_customhint_answer {
446: return '
447: <answer type="loncapa/perl">
448: </answer>
449: ';
450: }
451:
452: sub insert_mathresponse {
453: return '
454: <mathresponse>
455: <answer>
456: </answer>
457: <textline />
458: <hintgroup>
459: <startouttext />
460: <endouttext />
461: </hintgroup>
462: </mathresponse>';
463: }
464:
465: sub insert_mathresponse_answer {
466: return '
467: <answer>
468: </answer>
469: ';
470: }
471:
472: sub insert_mathhint {
473: return '
474: <mathhint>
475: <answer>
476: </answer>
477: </mathhint>';
478: }
479:
480: sub insert_mathhint_answer {
481: return '
482: <answer>
483: </answer>
484: ';
485: }
486:
487: sub insert_stringresponse {
488: return '
489: <stringresponse answer="" type="">
490: <textline />
491: <hintgroup>
492: <startouttext /><endouttext />
493: </hintgroup>
494: </stringresponse>';
495: }
496:
497: sub insert_essayresponse {
498: return '
499: <essayresponse>
500: <textfield></textfield>
501: </essayresponse>';
502: }
503:
504: sub insert_imageresponse {
505: return '
506: <imageresponse max="1">
507: <foilgroup>
508: <foil>
509: </foil>
510: </foilgroup>
511: <hintgroup>
512: <startouttext /><endouttext />
513: </hintgroup>
514: </imageresponse>';
515: }
516:
517: sub insert_optionresponse {
518: return '
519: <optionresponse max="10">
520: <foilgroup options="">
521: <foil>
522: <startouttext /><endouttext />
523: </foil>
524: </foilgroup>
525: <hintgroup>
526: <startouttext /><endouttext />
527: </hintgroup>
528: </optionresponse>';
529: }
530:
531: sub insert_organicresponse {
532: return '
533: <organicresponse>
534: <textline />
535: <hintgroup>
536: <startouttext /><endouttext />
537: </hintgroup>
538: </organicresponse>';
539: }
540:
541: sub insert_organicstructure {
542: return '
543: <organicstructure />
544: ';
545: }
546:
547: sub insert_radiobuttonresponse {
548: return '
549: <radiobuttonresponse max="10">
550: <foilgroup>
551: <foil>
552: <startouttext /><endouttext />
553: </foil>
554: </foilgroup>
555: <hintgroup>
556: <startouttext /><endouttext />
557: </hintgroup>
558: </radiobuttonresponse>';
559: }
560:
561: sub insert_reactionresponse {
562: return '
563: <reactionresponse>
564: <textline />
565: <hintgroup>
566: <startouttext /><endouttext />
567: </hintgroup>
568: </reactionresponse>';
569: }
570:
571: sub insert_rankresponse {
572: return '
573: <rankresponse max="10">
574: <foilgroup options="">
575: <foil>
576: <startouttext /><endouttext />
577: </foil>
578: </foilgroup>
579: <hintgroup>
580: <startouttext /><endouttext />
581: </hintgroup>
582: </rankresponse>';
583: }
584:
585: sub insert_matchresponse {
586: return '
587: <matchresponse max="10">
588: <foilgroup options="">
589: <itemgroup>
590: </itemgroup>
591: <foil>
592: <startouttext /><endouttext />
593: </foil>
594: </foilgroup>
595: <hintgroup>
596: <startouttext /><endouttext />
597: </hintgroup>
598: </matchresponse>';
599: }
600:
601: sub insert_startpartmarker { return '<startpartmarker />'; }
602: sub insert_endpartmarker { return '<endpartmarker />'; }
603:
604: sub insert_displayduedate { return '<displayduedate />'; }
605: sub insert_displaytitle { return '<displaytitle />'; }
606: sub insert_hintpart {
607: return '
608: <hintpart on="default">
609: <startouttext/><endouttext />
610: </hintpart>';
611: }
612:
613: sub insert_hintgroup {
614: return '
615: <hintgroup>
616: <startouttext /><endouttext />
617: </hintgroup>';
618: }
619:
620: sub insert_numericalhint {
621: return '
622: <numericalhint>
623: </numericalhint>';
624: }
625:
626: sub insert_reactionhint {
627: return '
628: <reactionhint>
629: </reactionhint>';
630: }
631:
632: sub insert_organichint {
633: return '
634: <organichint>
635: </organichint>';
636: }
637:
638: sub insert_stringhint {
639: return '
640: <stringhint>
641: </stringhint>';
642: }
643:
644: sub insert_formulahint {
645: return '
646: <formulahint>
647: </formulahint>';
648: }
649:
650: sub insert_radiobuttonhint {
651: return '
652: <radiobuttonhint>
653: </radiobuttonhint>';
654: }
655:
656: sub insert_optionhint {
657: return '
658: <optionhint>
659: </optionhint>';
660: }
661:
662: sub insert_startouttext {
663: return "<startouttext /><endouttext />";
664: }
665:
666: sub insert_script {
667: return "\n<script type=\"loncapa/perl\"></script>";
668: }
669:
670: sub js_change_detection {
671: my $unsaved=&mt("There are unsaved changes");
672: return (<<SCRIPT);
673: <script type="text/javascript">
674: var clean = true;
675: var is_submit = false;
676: var still_ask = false;
677: function compareForm(event_) {
678: if (!event_ && window.event) {
679: event_ = window.event;
680: }
681: if ((!is_submit || (is_submit && still_ask)) && !clean) {
682: still_ask = false;
683: is_submit = false;
684: event_.returnValue = "$unsaved";
685: return "$unsaved";
686: }
687: }
688: function unClean() {
689: clean=false;
690: }
691: window.onbeforeunload = compareForm;
692: </script>
693: SCRIPT
694: }
695:
696: sub form_change_detection {
697: return ' onsubmit="is_submit=true;" ';
698: }
699:
700: sub element_change_detection {
701: return ' onchange="unClean();" ';
702: }
703:
704: sub submit_ask_anyway {
705: my ($extra_action) = @_;
706: return ' onclick="still_ask=true;'.$extra_action.'" ';
707: }
708:
709: sub textarea_sizes {
710: my ($data)=@_;
711: my $count=0;
712: my $maxlength=-1;
713: foreach (split ("\n", $$data)) {
714: $count+=int(length($_)/79);
715: $count++;
716: if (length($_) > $maxlength) { $maxlength = length($_); }
717: }
718: my $rows = $count;
719: my $cols = $maxlength;
720: return ($rows,$cols);
721: }
722:
723: sub editline {
724: my ($tag,$data,$description,$size)=@_;
725: $data=&HTML::Entities::encode($data,'<>&"');
726: if ($description) { $description=$description."<br />"; }
727: my $change_code = &element_change_detection();
728: my $result = <<"END";
729: $description
730: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
731: value="$data" size="$size" $change_code />
732: END
733: return $result;
734: }
735:
736: sub editfield {
737: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
738:
739: my ($rows,$cols)=&textarea_sizes(\$data);
740: my $textareaclass;
741:
742: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
743: $rows+=7; # make room for HTMLarea
744: $minheight+=7; # make room for HTMLarea
745: $textareaclass = ' class="LC_richDefaultOff"';
746: }
747: if ($cols > 80) { $cols = 80; }
748: if ($cols < $minwidth ) { $cols = $minwidth; }
749: if ($rows < $minheight) { $rows = $minheight; }
750: if ($description) { $description=$description."<br />"; }
751:
752: # remove typesetting whitespace from between data and the end tag
753: # to make the edit look prettier
754: $data =~ s/\n?[ \t]*$//;
755:
756: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
757: '" cols="'.$cols.'" name="homework_edit_'.
758: $Apache::lonxml::curdepth.'" id="homework_edit_'.
759: $Apache::lonxml::curdepth.'" '.&element_change_detection().
760: $textareaclass.'>'.
761: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
762: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
763: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
764: }
765:
766: sub modifiedfield {
767: my ($endtag,$parser) = @_;
768: my $result;
769: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
770: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
771: # textareas throw away intial \n
772: if ($bodytext=~/^\n/) {
773: $result="\n".$result;
774: }
775: # if there is typesetting whitespace from between the data and the end tag
776: # restore to keep the source looking pretty
777: if ($bodytext =~ /(\n?[ \t]*)$/) {
778: $result .= $1;
779: }
780: return $result;
781: }
782:
783: # Returns a 1 if the token has been modified and you should rebuild the tag
784: # side-effects, will modify the $token if new values are found
785: sub get_new_args {
786: my ($token,$parstack,$safeeval,@args)=@_;
787: my $rebuild=0;
788: foreach my $arg (@args) {
789: #just want the string that it was set to
790: my $value=$token->[2]->{$arg};
791: my $element=&html_element_name($arg);
792: my $newvalue=$env{"form.$element"};
793: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
794: if (defined($newvalue) && $value ne $newvalue) {
795: if (ref($newvalue) eq 'ARRAY') {
796: $token->[2]->{$arg}=join(',',@$newvalue);
797: } else {
798: $token->[2]->{$arg}=$newvalue;
799: }
800: $rebuild=1;
801: # add new attributes to the of the attribute seq
802: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
803: push(@{ $token->[3] },$arg);
804: }
805: } elsif (!defined($newvalue) && defined($value)) {
806: delete($token->[2]->{$arg});
807: $rebuild=1;
808: }
809: }
810: return $rebuild;
811: }
812:
813: # looks for /> on start tags
814: sub rebuild_tag {
815: my ($token) = @_;
816: my $result;
817: if ($token->[0] eq 'S') {
818: $result = '<'.$token->[1];
819: foreach my $attribute (@{ $token->[3] }) {
820: my $value = $token->[2]{$attribute};
821: next if ($value eq '');
822: $value =~s/^\s+|\s+$//g;
823: $value =~s/\"//g;
824: &Apache::lonxml::debug("setting :$attribute: to :$value:");
825: $result.=' '.$attribute.'="'.$value.'"';
826: }
827: if ($token->[4] =~ m:/>$:) {
828: $result.=' />';
829: } else {
830: $result.='>';
831: }
832: } elsif ( $token->[0] eq 'E' ) {
833: $result = '</'.$token->[1].'>';
834: }
835: return $result;
836: }
837:
838: sub html_element_name {
839: my ($name) = @_;
840: return $name.'_'.$Apache::lonxml::curdepth;
841: }
842:
843: sub hidden_arg {
844: my ($name,$token) = @_;
845: my $result;
846: my $arg=$token->[2]{$name};
847: $result='<input name="'.&html_element_name($name).
848: '" type="hidden" value="'.$arg.'" />';
849: return $result;
850: }
851:
852: sub checked_arg {
853: my ($description,$name,$list,$token) = @_;
854: my $result;
855: my $optionlist="";
856: my $allselected=$token->[2]{$name};
857: $result=&mt($description);
858: foreach my $option (@$list) {
859: my ($value,$text);
860: if ( ref($option) eq 'ARRAY') {
861: $value='value="'.$$option[0].'"';
862: $text=$$option[1];
863: $option=$$option[0];
864: } else {
865: $text=$option;
866: $value='value="'.$option.'"';
867: }
868: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
869: &html_element_name($name).'"';
870: foreach my $selected (split(/,/,$allselected)) {
871: if ( $selected eq $option ) {
872: $result.=' checked="checked" ';
873: last;
874: }
875: }
876: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
877: }
878: return $result;
879: }
880:
881: sub text_arg {
882: my ($description,$name,$token,$size) = @_;
883: my $result;
884: if (!defined $size) { $size=20; }
885: my $arg=$token->[2]{$name};
886: $result=&mt($description).' <input name="'.&html_element_name($name).
887: '" type="text" value="'.$arg.'" size="'.$size.'" '.
888: &element_change_detection().'/>';
889: return '<span class="LC_nobreak">'.$result.'</span>';
890: }
891:
892: sub select_arg {
893: my ($description,$name,$list,$token) = @_;
894: my $result;
895: my $optionlist="";
896: my $selected=$token->[2]{$name};
897: if (ref($list) eq 'ARRAY') {
898: foreach my $option (@{$list}) {
899: my ($text,$value);
900: if (ref($option) eq 'ARRAY') {
901: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
902: $text=$option->[1];
903: $option=$option->[0];
904: } else {
905: $text=$option;
906: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
907: }
908: if ( $selected eq $option ) {
909: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
910: } else {
911: $optionlist.="<option $value >".&mt($text)."</option>\n";
912: }
913: }
914: }
915: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
916: &html_element_name($name).'" '.&element_change_detection().' >
917: '.$optionlist.'
918: </select></span>';
919: return $result;
920: }
921:
922: sub select_or_text_arg {
923: my ($description,$name,$list,$token,$size) = @_;
924: my $result;
925: my $optionlist="";
926: my $found=0;
927: my $selected=$token->[2]{$name};
928: if (ref($list) eq 'ARRAY') {
929: foreach my $option (@{$list}) {
930: my ($text,$value);
931: if (ref($option) eq 'ARRAY') {
932: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
933: $text=$option->[1];
934: $option=$option->[0];
935: } else {
936: $text=$option;
937: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
938: }
939: if ( $selected eq $option ) {
940: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
941: $found=1;
942: } else {
943: $optionlist.="<option $value>$text</option>\n";
944: }
945: }
946: }
947: $optionlist.="<option value=\"TYPEDINVALUE\"".
948: ((!$found)?' selected="selected"':'').
949: ">".&mt('Type-in value')."</option>\n";
950: #
951: my $change_code=&element_change_detection();
952: my $element=&html_element_name($name);
953: my $selectelement='select_list_'.$element;
954: my $typeinelement='type_in_'.$element;
955: my $typeinvalue=($found?'':$selected);
956: #
957: my $hiddenvalue='this.form.'.$element.'.value';
958: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
959: my $selectedvalue='this.form.'.$selectelement.
960: '.options['.$selectedindex.'].value';
961: my $typedinvalue='this.form.'.$typeinelement.'.value';
962: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
963: $description=&mt($description);
964: #
965: return (<<ENDSELECTORTYPE);
966: <span class="LC_nobreak">
967: $description
968: <select name="$selectelement"
969: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
970: $optionlist
971: </select>
972: <input type="text" size="$size" name="$typeinelement"
973: value="$typeinvalue"
974: onChange="$hiddenvalue=$typedinvalue;"
975: onFocus="$selectedindex=$selecttypeinindex-1;" />
976: <input type="hidden" name="$element" value="$selected" $change_code />
977: </span>
978: ENDSELECTORTYPE
979: }
980:
981: #----------------------------------------------------- image coordinates
982: # single image coordinates, x, y
983: sub entercoords {
984: my ($idx,$idy,$mode,$width,$height) = @_;
985: unless ($Apache::edit::bgimgsrc) { return ''; }
986: if ($idx) { $idx.='_'; }
987: if ($idy) { $idy.='_'; }
988: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
989: my $form = 'lonhomework';
990: my $element;
991: if (! defined($mode) || $mode eq 'attribute') {
992: $element = &escape("$Apache::lonxml::curdepth");
993: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
994: $element = &escape('homework_edit_'.
995: $Apache::lonxml::curdepth);
996: }
997: my $id=$Apache::lonxml::curdepth;
998: my %data=("imagechoice.$id.type" =>'point',
999: "imagechoice.$id.formname" =>$form,
1000: "imagechoice.$id.formx" =>"$idx$element",
1001: "imagechoice.$id.formy" =>"$idy$element",
1002: "imagechoice.$id.file" =>$bgfile,
1003: "imagechoice.$id.formcoord" =>$element);
1004: if ($height) {
1005: $data{"imagechoice.$id.formheight"}=$height.'_'.
1006: $Apache::edit::bgimgsrccurdepth;
1007: }
1008: if ($width) {
1009: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1010: $Apache::edit::bgimgsrccurdepth;
1011: }
1012: &Apache::lonnet::appenv(\%data);
1013: my $text="Click Coordinates";
1014: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1015: return $result;
1016: }
1017:
1018: # coordinates (x1,y1)-(x2,y2)...
1019: # mode can be either box, or polygon
1020: sub entercoord {
1021: my ($idx,$mode,$width,$height,$type) = @_;
1022: unless ($Apache::edit::bgimgsrc) { return ''; }
1023: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1024: my $form = 'lonhomework';
1025: my $element;
1026: if (! defined($mode) || $mode eq 'attribute') {
1027: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1028: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1029: $element = &escape('homework_edit_'.
1030: $Apache::lonxml::curdepth);
1031: }
1032: my $id=$Apache::lonxml::curdepth;
1033: my %data=("imagechoice.$id.type" =>$type,
1034: "imagechoice.$id.formname" =>$form,
1035: "imagechoice.$id.file" =>$bgfile,
1036: "imagechoice.$id.formcoord" =>$element);
1037: if ($height) {
1038: $data{"imagechoice.$id.formheight"}=$height.'_'.
1039: $Apache::edit::bgimgsrccurdepth;
1040: }
1041: if ($width) {
1042: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1043: $Apache::edit::bgimgsrccurdepth;
1044: }
1045: &Apache::lonnet::appenv(\%data);
1046: my $text="Enter Coordinates";
1047: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1048: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1049: return $result;
1050: }
1051:
1052: sub deletecoorddata {
1053: &Apache::lonnet::delenv('imagechoice.');
1054: }
1055:
1056: #----------------------------------------------------- browse
1057: sub browse {
1058: # insert a link to call up the filesystem browser (lonindexer)
1059: my ($id, $mode, $titleid, $only) = @_;
1060: my $form = 'lonhomework';
1061: my $element;
1062: if (! defined($mode) || $mode eq 'attribute') {
1063: $element = &escape("$id\_$Apache::lonxml::curdepth");
1064: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1065: $element = &escape('homework_edit_'.
1066: $Apache::lonxml::curdepth);
1067: }
1068: my $titleelement;
1069: if ($titleid) {
1070: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1071: } else {
1072: $titleelement=",'$only'";
1073: }
1074: my $result = <<"ENDBUTTON";
1075: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1076: ENDBUTTON
1077: return $result;
1078: }
1079:
1080: #----------------------------------------------------- browse
1081: sub search {
1082: # insert a link to call up the filesystem browser (lonindexer)
1083: my ($id, $mode, $titleid) = @_;
1084: my $form = 'lonhomework';
1085: my $element;
1086: if (! defined($mode) || $mode eq 'attribute') {
1087: $element = &escape("$id\_$Apache::lonxml::curdepth");
1088: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1089: $element = &escape('homework_edit_'.
1090: $Apache::lonxml::curdepth);
1091: }
1092: my $titleelement;
1093: if ($titleid) {
1094: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1095: }
1096: my $result = <<"ENDBUTTON";
1097: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1098: ENDBUTTON
1099: return $result;
1100: }
1101:
1102:
1103: 1;
1104: __END__
1105:
1106:
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