1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.130 2010/10/09 22:31:49 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_numericalresponse {
409: return '
410: <numericalresponse answer="">
411: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
412: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
413: <textline />
414: <hintgroup>
415: <startouttext /><endouttext />
416: </hintgroup>
417: </numericalresponse>';
418: }
419:
420: sub insert_customresponse {
421: return '
422: <customresponse>
423: <answer type="loncapa/perl">
424: </answer>
425: <textline />
426: <hintgroup>
427: <startouttext /><endouttext />
428: </hintgroup>
429: </customresponse>';
430: }
431:
432: sub insert_customresponse_answer {
433: return '
434: <answer type="loncapa/perl">
435: </answer>
436: ';
437: }
438:
439: sub insert_customhint {
440: return '
441: <customhint>
442: <answer type="loncapa/perl">
443: </answer>
444: </customhint>';
445: }
446:
447: sub insert_customhint_answer {
448: return '
449: <answer type="loncapa/perl">
450: </answer>
451: ';
452: }
453:
454: sub insert_mathresponse {
455: return '
456: <mathresponse>
457: <answer>
458: </answer>
459: <textline />
460: <hintgroup>
461: <startouttext />
462: <endouttext />
463: </hintgroup>
464: </mathresponse>';
465: }
466:
467: sub insert_mathresponse_answer {
468: return '
469: <answer>
470: </answer>
471: ';
472: }
473:
474: sub insert_mathhint {
475: return '
476: <mathhint>
477: <answer>
478: </answer>
479: </mathhint>';
480: }
481:
482: sub insert_mathhint_answer {
483: return '
484: <answer>
485: </answer>
486: ';
487: }
488:
489: sub insert_stringresponse {
490: return '
491: <stringresponse answer="" type="">
492: <textline />
493: <hintgroup>
494: <startouttext /><endouttext />
495: </hintgroup>
496: </stringresponse>';
497: }
498:
499: sub insert_essayresponse {
500: return '
501: <essayresponse>
502: <textfield></textfield>
503: </essayresponse>';
504: }
505:
506: sub insert_imageresponse {
507: return '
508: <imageresponse max="1">
509: <foilgroup>
510: <foil>
511: </foil>
512: </foilgroup>
513: <hintgroup>
514: <startouttext /><endouttext />
515: </hintgroup>
516: </imageresponse>';
517: }
518:
519: sub insert_optionresponse {
520: return '
521: <optionresponse max="10">
522: <foilgroup options="">
523: <foil>
524: <startouttext /><endouttext />
525: </foil>
526: </foilgroup>
527: <hintgroup>
528: <startouttext /><endouttext />
529: </hintgroup>
530: </optionresponse>';
531: }
532:
533: sub insert_organicresponse {
534: return '
535: <organicresponse>
536: <textline />
537: <hintgroup>
538: <startouttext /><endouttext />
539: </hintgroup>
540: </organicresponse>';
541: }
542:
543: sub insert_organicstructure {
544: return '
545: <organicstructure />
546: ';
547: }
548:
549: sub insert_radiobuttonresponse {
550: return '
551: <radiobuttonresponse max="10">
552: <foilgroup>
553: <foil>
554: <startouttext /><endouttext />
555: </foil>
556: </foilgroup>
557: <hintgroup>
558: <startouttext /><endouttext />
559: </hintgroup>
560: </radiobuttonresponse>';
561: }
562:
563: sub insert_reactionresponse {
564: return '
565: <reactionresponse>
566: <textline />
567: <hintgroup>
568: <startouttext /><endouttext />
569: </hintgroup>
570: </reactionresponse>';
571: }
572:
573: sub insert_rankresponse {
574: return '
575: <rankresponse max="10">
576: <foilgroup options="">
577: <foil>
578: <startouttext /><endouttext />
579: </foil>
580: </foilgroup>
581: <hintgroup>
582: <startouttext /><endouttext />
583: </hintgroup>
584: </rankresponse>';
585: }
586:
587: sub insert_matchresponse {
588: return '
589: <matchresponse max="10">
590: <foilgroup options="">
591: <itemgroup>
592: </itemgroup>
593: <foil>
594: <startouttext /><endouttext />
595: </foil>
596: </foilgroup>
597: <hintgroup>
598: <startouttext /><endouttext />
599: </hintgroup>
600: </matchresponse>';
601: }
602:
603: sub insert_startpartmarker { return '<startpartmarker />'; }
604: sub insert_endpartmarker { return '<endpartmarker />'; }
605:
606: sub insert_displayduedate { return '<displayduedate />'; }
607: sub insert_displaytitle { return '<displaytitle />'; }
608: sub insert_hintpart {
609: return '
610: <hintpart on="default">
611: <startouttext/><endouttext />
612: </hintpart>';
613: }
614:
615: sub insert_hintgroup {
616: return '
617: <hintgroup>
618: <startouttext /><endouttext />
619: </hintgroup>';
620: }
621:
622: sub insert_numericalhint {
623: return '
624: <numericalhint>
625: </numericalhint>';
626: }
627:
628: sub insert_reactionhint {
629: return '
630: <reactionhint>
631: </reactionhint>';
632: }
633:
634: sub insert_organichint {
635: return '
636: <organichint>
637: </organichint>';
638: }
639:
640: sub insert_stringhint {
641: return '
642: <stringhint>
643: </stringhint>';
644: }
645:
646: sub insert_formulahint {
647: return '
648: <formulahint>
649: </formulahint>';
650: }
651:
652: sub insert_radiobuttonhint {
653: return '
654: <radiobuttonhint>
655: </radiobuttonhint>';
656: }
657:
658: sub insert_optionhint {
659: return '
660: <optionhint>
661: </optionhint>';
662: }
663:
664: sub insert_startouttext {
665: return "<startouttext /><endouttext />";
666: }
667:
668: sub insert_script {
669: return "\n<script type=\"loncapa/perl\"></script>";
670: }
671:
672: sub js_change_detection {
673: my $unsaved=&mt("There are unsaved changes");
674: return (<<SCRIPT);
675: <script type="text/javascript">
676: var clean = true;
677: var is_submit = false;
678: var still_ask = false;
679: function compareForm(event_) {
680: if (!event_ && window.event) {
681: event_ = window.event;
682: }
683: if ((!is_submit || (is_submit && still_ask)) && !clean) {
684: still_ask = false;
685: is_submit = false;
686: event_.returnValue = "$unsaved";
687: return "$unsaved";
688: }
689: }
690: function unClean() {
691: clean=false;
692: }
693: window.onbeforeunload = compareForm;
694: </script>
695: SCRIPT
696: }
697:
698: sub form_change_detection {
699: return ' onsubmit="is_submit=true;" ';
700: }
701:
702: sub element_change_detection {
703: return ' onchange="unClean();" ';
704: }
705:
706: sub submit_ask_anyway {
707: my ($extra_action) = @_;
708: return ' onclick="still_ask=true;'.$extra_action.'" ';
709: }
710:
711: sub textarea_sizes {
712: my ($data)=@_;
713: my $count=0;
714: my $maxlength=-1;
715: foreach (split ("\n", $$data)) {
716: $count+=int(length($_)/79);
717: $count++;
718: if (length($_) > $maxlength) { $maxlength = length($_); }
719: }
720: my $rows = $count;
721: my $cols = $maxlength;
722: return ($rows,$cols);
723: }
724:
725: sub editline {
726: my ($tag,$data,$description,$size)=@_;
727: $data=&HTML::Entities::encode($data,'<>&"');
728: if ($description) { $description=$description."<br />"; }
729: my $change_code = &element_change_detection();
730: my $result = <<"END";
731: $description
732: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
733: value="$data" size="$size" $change_code />
734: END
735: return $result;
736: }
737:
738: sub editfield {
739: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
740:
741: my ($rows,$cols)=&textarea_sizes(\$data);
742: my $textareaclass;
743:
744: if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
745: $rows+=7; # make room for HTMLarea
746: $minheight+=7; # make room for HTMLarea
747: $textareaclass = ' class="LC_richDefaultOff"';
748: }
749: if ($cols > 80) { $cols = 80; }
750: if ($cols < $minwidth ) { $cols = $minwidth; }
751: if ($rows < $minheight) { $rows = $minheight; }
752: if ($description) { $description=$description."<br />"; }
753:
754: # remove typesetting whitespace from between data and the end tag
755: # to make the edit look prettier
756: $data =~ s/\n?[ \t]*$//;
757:
758: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
759: '" cols="'.$cols.'" name="homework_edit_'.
760: $Apache::lonxml::curdepth.'" id="homework_edit_'.
761: $Apache::lonxml::curdepth.'" '.&element_change_detection().
762: $textareaclass.'>'.
763: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
764: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
765: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
766: }
767:
768: sub modifiedfield {
769: my ($endtag,$parser) = @_;
770: my $result;
771: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
772: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
773: # textareas throw away intial \n
774: if ($bodytext=~/^\n/) {
775: $result="\n".$result;
776: }
777: # if there is typesetting whitespace from between the data and the end tag
778: # restore to keep the source looking pretty
779: if ($bodytext =~ /(\n?[ \t]*)$/) {
780: $result .= $1;
781: }
782: return $result;
783: }
784:
785: # Returns a 1 if the token has been modified and you should rebuild the tag
786: # side-effects, will modify the $token if new values are found
787: sub get_new_args {
788: my ($token,$parstack,$safeeval,@args)=@_;
789: my $rebuild=0;
790: foreach my $arg (@args) {
791: #just want the string that it was set to
792: my $value=$token->[2]->{$arg};
793: my $element=&html_element_name($arg);
794: my $newvalue=$env{"form.$element"};
795: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
796: if (defined($newvalue) && $value ne $newvalue) {
797: if (ref($newvalue) eq 'ARRAY') {
798: $token->[2]->{$arg}=join(',',@$newvalue);
799: } else {
800: $token->[2]->{$arg}=$newvalue;
801: }
802: $rebuild=1;
803: # add new attributes to the of the attribute seq
804: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
805: push(@{ $token->[3] },$arg);
806: }
807: } elsif (!defined($newvalue) && defined($value)) {
808: delete($token->[2]->{$arg});
809: $rebuild=1;
810: }
811: }
812: return $rebuild;
813: }
814:
815: # looks for /> on start tags
816: sub rebuild_tag {
817: my ($token) = @_;
818: my $result;
819: if ($token->[0] eq 'S') {
820: $result = '<'.$token->[1];
821: foreach my $attribute (@{ $token->[3] }) {
822: my $value = $token->[2]{$attribute};
823: next if ($value eq '');
824: $value =~s/^\s+|\s+$//g;
825: $value =~s/\"//g;
826: &Apache::lonxml::debug("setting :$attribute: to :$value:");
827: $result.=' '.$attribute.'="'.$value.'"';
828: }
829: if ($token->[4] =~ m:/>$:) {
830: $result.=' />';
831: } else {
832: $result.='>';
833: }
834: } elsif ( $token->[0] eq 'E' ) {
835: $result = '</'.$token->[1].'>';
836: }
837: return $result;
838: }
839:
840: sub html_element_name {
841: my ($name) = @_;
842: return $name.'_'.$Apache::lonxml::curdepth;
843: }
844:
845: sub hidden_arg {
846: my ($name,$token) = @_;
847: my $result;
848: my $arg=$token->[2]{$name};
849: $result='<input name="'.&html_element_name($name).
850: '" type="hidden" value="'.$arg.'" />';
851: return $result;
852: }
853:
854: sub checked_arg {
855: my ($description,$name,$list,$token) = @_;
856: my $result;
857: my $optionlist="";
858: my $allselected=$token->[2]{$name};
859: $result=&mt($description);
860: foreach my $option (@$list) {
861: my ($value,$text);
862: if ( ref($option) eq 'ARRAY') {
863: $value='value="'.$$option[0].'"';
864: $text=$$option[1];
865: $option=$$option[0];
866: } else {
867: $text=$option;
868: $value='value="'.$option.'"';
869: }
870: $result.='<span class="LC_nobreak"><label><input type="checkbox" '.$value.' name="'.
871: &html_element_name($name).'"';
872: foreach my $selected (split(/,/,$allselected)) {
873: if ( $selected eq $option ) {
874: $result.=' checked="checked" ';
875: last;
876: }
877: }
878: $result.=&element_change_detection().' />'.$text.'</label></span>'."\n";
879: }
880: return $result;
881: }
882:
883: sub text_arg {
884: my ($description,$name,$token,$size) = @_;
885: my $result;
886: if (!defined $size) { $size=20; }
887: my $arg=$token->[2]{$name};
888: $result=&mt($description).' <input name="'.&html_element_name($name).
889: '" type="text" value="'.$arg.'" size="'.$size.'" '.
890: &element_change_detection().'/>';
891: return '<span class="LC_nobreak">'.$result.'</span>';
892: }
893:
894: sub select_arg {
895: my ($description,$name,$list,$token) = @_;
896: my $result;
897: my $optionlist="";
898: my $selected=$token->[2]{$name};
899: if (ref($list) eq 'ARRAY') {
900: foreach my $option (@{$list}) {
901: my ($text,$value);
902: if (ref($option) eq 'ARRAY') {
903: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
904: $text=$option->[1];
905: $option=$option->[0];
906: } else {
907: $text=$option;
908: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
909: }
910: if ( $selected eq $option ) {
911: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
912: } else {
913: $optionlist.="<option $value >".&mt($text)."</option>\n";
914: }
915: }
916: }
917: $result.='<span class="LC_nobreak">'.&mt($description).' <select name="'.
918: &html_element_name($name).'" '.&element_change_detection().' >
919: '.$optionlist.'
920: </select></span>';
921: return $result;
922: }
923:
924: sub select_or_text_arg {
925: my ($description,$name,$list,$token,$size) = @_;
926: my $result;
927: my $optionlist="";
928: my $found=0;
929: my $selected=$token->[2]{$name};
930: if (ref($list) eq 'ARRAY') {
931: foreach my $option (@{$list}) {
932: my ($text,$value);
933: if (ref($option) eq 'ARRAY') {
934: $value='value="'.&HTML::Entities::encode($option->[0]).'"';
935: $text=$option->[1];
936: $option=$option->[0];
937: } else {
938: $text=$option;
939: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
940: }
941: if ( $selected eq $option ) {
942: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
943: $found=1;
944: } else {
945: $optionlist.="<option $value>$text</option>\n";
946: }
947: }
948: }
949: $optionlist.="<option value=\"TYPEDINVALUE\"".
950: ((!$found)?' selected="selected"':'').
951: ">".&mt('Type-in value')."</option>\n";
952: #
953: my $change_code=&element_change_detection();
954: my $element=&html_element_name($name);
955: my $selectelement='select_list_'.$element;
956: my $typeinelement='type_in_'.$element;
957: my $typeinvalue=($found?'':$selected);
958: #
959: my $hiddenvalue='this.form.'.$element.'.value';
960: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
961: my $selectedvalue='this.form.'.$selectelement.
962: '.options['.$selectedindex.'].value';
963: my $typedinvalue='this.form.'.$typeinelement.'.value';
964: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
965: $description=&mt($description);
966: #
967: return (<<ENDSELECTORTYPE);
968: <span class="LC_nobreak">
969: $description
970: <select name="$selectelement"
971: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
972: $optionlist
973: </select>
974: <input type="text" size="$size" name="$typeinelement"
975: value="$typeinvalue"
976: onChange="$hiddenvalue=$typedinvalue;"
977: onFocus="$selectedindex=$selecttypeinindex-1;" />
978: <input type="hidden" name="$element" value="$selected" $change_code />
979: </span>
980: ENDSELECTORTYPE
981: }
982:
983: #----------------------------------------------------- image coordinates
984: # single image coordinates, x, y
985: sub entercoords {
986: my ($idx,$idy,$mode,$width,$height) = @_;
987: unless ($Apache::edit::bgimgsrc) { return ''; }
988: if ($idx) { $idx.='_'; }
989: if ($idy) { $idy.='_'; }
990: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
991: my $form = 'lonhomework';
992: my $element;
993: if (! defined($mode) || $mode eq 'attribute') {
994: $element = &escape("$Apache::lonxml::curdepth");
995: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
996: $element = &escape('homework_edit_'.
997: $Apache::lonxml::curdepth);
998: }
999: my $id=$Apache::lonxml::curdepth;
1000: my %data=("imagechoice.$id.type" =>'point',
1001: "imagechoice.$id.formname" =>$form,
1002: "imagechoice.$id.formx" =>"$idx$element",
1003: "imagechoice.$id.formy" =>"$idy$element",
1004: "imagechoice.$id.file" =>$bgfile,
1005: "imagechoice.$id.formcoord" =>$element);
1006: if ($height) {
1007: $data{"imagechoice.$id.formheight"}=$height.'_'.
1008: $Apache::edit::bgimgsrccurdepth;
1009: }
1010: if ($width) {
1011: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1012: $Apache::edit::bgimgsrccurdepth;
1013: }
1014: &Apache::lonnet::appenv(\%data);
1015: my $text="Click Coordinates";
1016: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1017: return $result;
1018: }
1019:
1020: # coordinates (x1,y1)-(x2,y2)...
1021: # mode can be either box, or polygon
1022: sub entercoord {
1023: my ($idx,$mode,$width,$height,$type) = @_;
1024: unless ($Apache::edit::bgimgsrc) { return ''; }
1025: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1026: my $form = 'lonhomework';
1027: my $element;
1028: if (! defined($mode) || $mode eq 'attribute') {
1029: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1030: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1031: $element = &escape('homework_edit_'.
1032: $Apache::lonxml::curdepth);
1033: }
1034: my $id=$Apache::lonxml::curdepth;
1035: my %data=("imagechoice.$id.type" =>$type,
1036: "imagechoice.$id.formname" =>$form,
1037: "imagechoice.$id.file" =>$bgfile,
1038: "imagechoice.$id.formcoord" =>$element);
1039: if ($height) {
1040: $data{"imagechoice.$id.formheight"}=$height.'_'.
1041: $Apache::edit::bgimgsrccurdepth;
1042: }
1043: if ($width) {
1044: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1045: $Apache::edit::bgimgsrccurdepth;
1046: }
1047: &Apache::lonnet::appenv(\%data);
1048: my $text="Enter Coordinates";
1049: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1050: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1051: return $result;
1052: }
1053:
1054: sub deletecoorddata {
1055: &Apache::lonnet::delenv('imagechoice.');
1056: }
1057:
1058: #----------------------------------------------------- browse
1059: sub browse {
1060: # insert a link to call up the filesystem browser (lonindexer)
1061: my ($id, $mode, $titleid, $only) = @_;
1062: my $form = 'lonhomework';
1063: my $element;
1064: if (! defined($mode) || $mode eq 'attribute') {
1065: $element = &escape("$id\_$Apache::lonxml::curdepth");
1066: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1067: $element = &escape('homework_edit_'.
1068: $Apache::lonxml::curdepth);
1069: }
1070: my $titleelement;
1071: if ($titleid) {
1072: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1073: } else {
1074: $titleelement=",'$only'";
1075: }
1076: my $result = <<"ENDBUTTON";
1077: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1078: ENDBUTTON
1079: return $result;
1080: }
1081:
1082: #----------------------------------------------------- browse
1083: sub search {
1084: # insert a link to call up the filesystem browser (lonindexer)
1085: my ($id, $mode, $titleid) = @_;
1086: my $form = 'lonhomework';
1087: my $element;
1088: if (! defined($mode) || $mode eq 'attribute') {
1089: $element = &escape("$id\_$Apache::lonxml::curdepth");
1090: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1091: $element = &escape('homework_edit_'.
1092: $Apache::lonxml::curdepth);
1093: }
1094: my $titleelement;
1095: if ($titleid) {
1096: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1097: }
1098: my $result = <<"ENDBUTTON";
1099: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1100: ENDBUTTON
1101: return $result;
1102: }
1103:
1104:
1105: 1;
1106: __END__
1107:
1108:
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