1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.117 2008/11/10 14:11:16 jms 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: =head1 NAME
30:
31: Apache::edit - edit mode helpers
32:
33: =head1 SYNOPSIS
34:
35: Invoked by many homework and xml related modules.
36:
37: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
38:
39: =head1 INTRODUCTION
40:
41: This module outputs HTML syntax helpful for the rendering of edit
42: mode interfaces.
43:
44: This is part of the LearningOnline Network with CAPA project
45: described at http://www.lon-capa.org.
46:
47: =head1 HANDLER SUBROUTINE
48:
49: There is no handler subroutine.
50:
51: =head1 OTHER SUBROUTINES
52:
53: =over 4
54:
55: =item *
56:
57: initialize_edit() : initialize edit (set colordepth to zero)
58:
59: =item *
60:
61: tag_start($target,$token,$description) : provide deletion and insertion lists
62: for the manipulation of a start tag; return a scalar string
63:
64: =item *
65:
66: tag_end($target,$token,$description) : ending syntax corresponding to
67: &tag_start. return a scalar string.
68:
69: =item *
70:
71: start_table($token) : start table; update colordepth; return scalar string.
72:
73: =item *
74:
75: end_table() : reduce color depth; end table; return scalar string
76:
77: =item *
78:
79: start_spanning_row() : start a new table row spanning the 'edit' environment.
80:
81: =item *
82:
83: start_row() : start a new table row and element.
84:
85: =item *
86:
87: end_row() : end current table element and row.
88:
89: =item *
90:
91: movebuttons($target,$token) : move-up and move-down buttons; return scalar
92: string
93:
94: =item *
95:
96: deletelist($target,$token) : provide a yes option in an HTML select element;
97: return scalar string
98:
99: =item *
100:
101: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
102: $style) : respond to a user delete request by passing relevant stack
103: and array information to various rendering functions; return a scalar string
104:
105: =item *
106:
107: get_insert_list($token) : provide an insertion list based on possibilities
108: from lonxml; return a scalar string
109:
110: =item *
111:
112: insertlist($target,$token) : api that uses get_insert_list;
113: return a scalar string
114:
115: =item *
116:
117: handleinsert($token) : provide an insertion list based on possibilities
118: from lonxml; return a scalar string
119:
120: =item *
121:
122: get_insert_list($token) : provide an insertion list based on possibilities
123: from lonxml; return a scalar string
124:
125: =item *
126: browse($elementname) : provide a link which will open up the filesystem
127: browser (lonindexer) and, once a file is selected, place the result in
128: the form element $elementname.
129:
130: =item *
131: search($elementname) : provide a link which will open up the filesystem
132: searcher (lonsearchcat) and, once a file is selected, place the result in
133: the form element $elementname.
134:
135: =item *
136: editline(tag,data,description,size): Provide a <input type="text" ../> for
137: single-line text entry. This is to be used for text enclosed by tags, not
138: arguements/parameters associated with a tag.
139:
140: =back
141:
142: incomplete...
143:
144: =cut
145:
146: package Apache::edit;
147:
148: use strict;
149: use Apache::lonnet;
150: use HTML::Entities();
151: use Apache::lonlocal;
152: use lib '/home/httpd/lib/perl/';
153: use LONCAPA;
154:
155:
156: # Global Vars
157: # default list of colors to use in editing
158: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
159: # depth of nesting of edit
160: $Apache::edit::colordepth=0;
161: @Apache::edit::inserttag=();
162: # image-type responses: active background image and curdepth at definition
163: $Apache::edit::bgimgsrc='';
164: $Apache::edit::bgimgsrccurdepth='';
165:
166: sub initialize_edit {
167: $Apache::edit::colordepth=0;
168: @Apache::edit::inserttag=();
169: }
170:
171: sub tag_start {
172: my ($target,$token,$description) = @_;
173: my $result='';
174: if ($target eq "edit") {
175: my $tag=$token->[1];
176: if (!$description) {
177: $description=&Apache::lonxml::description($token);
178: if (!$description) { $description="<$tag>"; }
179: }
180: $result.= &start_table($token)."<tr><td>$description</td>
181: <td>".&mt('Delete?').' '.
182: &deletelist($target,$token)
183: ."</td>
184: <td>".
185: &insertlist($target,$token);
186: #<td>".
187: # &movebuttons($target,$token).
188: # "</tr><tr><td colspan=\"3\">\n";
189: my @help = Apache::lonxml::helpinfo($token);
190: if ($help[0]) {
191: $result .= '</td><td align="right" valign="top">' .
192: Apache::loncommon::help_open_topic(@help);
193: } else { $result .= "</td><td> "; }
194: $result .= &end_row().&start_spanning_row();
195: }
196: return $result;
197: }
198:
199: sub tag_end {
200: my ($target,$token,$description) = @_;
201: my $result='';
202: if ($target eq 'edit') {
203: $result.="</td></tr>".&end_table()."\n";
204: }
205: return $result;
206: }
207:
208: sub start_table {
209: my ($token)=@_;
210: my $tag = &Apache::lonxml::get_tag($token);
211:
212: my $color = $Apache::lonxml::insertlist{"$tag.color"};
213: &Apache::lonxml::debug(" $tag -- $color");
214: if (!defined($color)) {
215: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
216: }
217: $Apache::edit::colordepth++;
218: push(@Apache::edit::inserttag,$token->[1]);
219: my $result='<div align="right">';
220: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
221: return $result;
222: }
223:
224: sub end_table {
225: $Apache::edit::colordepth--;
226: my $result='</table></div>';
227: $result.='<div align="left"><table><tr><td>';
228:
229: my ($tagname,$closingtag);
230: if (defined($Apache::edit::inserttag[-2])) {
231: $tagname=$Apache::edit::inserttag[-2];
232: } else {
233: if ($Apache::lonhomework::parsing_a_task) {
234: $tagname='Task';
235: } else {
236: $tagname='problem';
237: }
238: }
239: if (defined($Apache::edit::inserttag[-1])) {
240: $closingtag=$Apache::edit::inserttag[-1];
241: }
242: $result.=&innerinsertlist('edit',$tagname,$closingtag).
243: "</td></tr></table></div>";
244: my $last = pop(@Apache::edit::inserttag);
245: return $result;
246: }
247:
248: sub start_spanning_row { return '<tr><td colspan="5" bgcolor="#DDDDDD">';}
249: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
250: sub end_row { return '</td></tr>'; }
251:
252: sub movebuttons {
253: my ($target,$token) = @_;
254: my $result='<input type="submit" name="moveup.'.
255: $Apache::lonxml::curdepth.'" value="Move Up" />';
256: $result.='<input type="submit" name="movedown.'.
257: $Apache::lonxml::curdepth.'" value="Move Down" />';
258: return $result;
259: }
260:
261: sub deletelist {
262: my ($target,$token) = @_;
263: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
264: <option></option>
265: <option>".&mt('yes')."</option>
266: </select>";
267: return $result;
268: }
269:
270: sub handle_delete {
271: if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
272: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
273: my $result=0;
274: if ($space) {
275: my $sub1="$space\:\:delete_$token->[1]";
276: {
277: no strict 'refs';
278: if (defined &$sub1) {
279: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
280: }
281: }
282: }
283: if (!$result) {
284: my $endtag='/'.$token->[1];
285: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style);
286: $$parser['-1']->get_token();
287: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
288: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
289: }
290: return 1;
291: }
292:
293: sub get_insert_list {
294: my ($tagname) = @_;
295: my $result='';
296: my @tags= ();
297: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
298: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
299: push (@tags, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
300: }
301: foreach my $namespace (@Apache::lonxml::namespace) {
302: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
303: push (@tags, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
304: }
305: }
306: if (@tags) {
307: my %options;
308: foreach my $tag (@tags) {
309: my $descrip=$Apache::lonxml::insertlist{"$tag.description"};
310: my $tagnum =$Apache::lonxml::insertlist{"$tag.num"};
311: $options{$descrip} ="<option value=\"$tagnum\">".
312: $descrip."</option>\n";
313: }
314: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
315: if ($result) { $result='<option selected="selected"></option>'.$result; }
316: }
317: return $result;
318: }
319:
320: sub insertlist {
321: my ($target,$token) = @_;
322: return &innerinsertlist($target,$token->[1]);
323: }
324:
325: sub innerinsertlist {
326: my ($target,$tagname,$closingtag) = @_;
327: my $result;
328: my $after='';
329: if ($closingtag) {
330: $after='_after_'.$closingtag;
331: }
332: if ($target eq 'edit') {
333: my $optionlist= &get_insert_list($tagname);
334: if ($optionlist) {
335: $result = &mt('Insert:')."
336: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
337: $optionlist
338: </select>"
339: } else {
340: $result=" ";
341: }
342: }
343: return $result;
344: }
345:
346: sub handle_insert {
347: if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
348: my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"};
349: return &do_insert($tagnum);
350: }
351:
352: sub handle_insertafter {
353: my $tagname=shift;
354: if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '') {
355: return '';
356: }
357: my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
358: return &do_insert($tagnum,1);
359: }
360:
361: sub do_insert {
362: my ($tagnum,$after) = @_;
363: my $result;
364:
365: my $newtag = $Apache::lonxml::insertlist{"$tagnum.tag"};
366: my $func = $Apache::lonxml::insertlist{"$newtag.function"};
367: if ($func eq 'default') {
368: my $namespace;
369: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
370: my $depth = scalar(@Apache::lonxml::depthcounter);
371: $depth -- if ($after);
372: my $inset = "\t"x$depth;
373: $result.="\n$inset<$newtag>\n$inset</$newtag>";
374: } else {
375: if (defined(&$func)) {
376: {
377: no strict 'refs';
378: $result.=&$func();
379: }
380: } else {
381: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined. ($tagnum)");
382: }
383: }
384: return $result;
385: }
386:
387: sub insert_img {
388: return '
389: <img />';
390: }
391:
392: sub insert_responseparam {
393: return '
394: <responseparam />';
395: }
396:
397: sub insert_parameter {
398: return '
399: <parameter />';
400: }
401:
402: sub insert_formularesponse {
403: return '
404: <formularesponse answer="" samples="">
405: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
406: <textline size="25"/>
407: <hintgroup>
408: <startouttext /><endouttext />
409: </hintgroup>
410: </formularesponse>';
411: }
412:
413: sub insert_numericalresponse {
414: return '
415: <numericalresponse answer="">
416: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
417: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
418: <textline />
419: <hintgroup>
420: <startouttext /><endouttext />
421: </hintgroup>
422: </numericalresponse>';
423: }
424:
425: sub insert_customresponse {
426: return '
427: <customresponse>
428: <answer type="loncapa/perl">
429: </answer>
430: <textline />
431: <hintgroup>
432: <startouttext /><endouttext />
433: </hintgroup>
434: </customresponse>';
435: }
436:
437: sub insert_customresponse_answer {
438: return '
439: <answer type="loncapa/perl">
440: </answer>
441: ';
442: }
443:
444: sub insert_customhint {
445: return '
446: <customhint>
447: <answer type="loncapa/perl">
448: </answer>
449: </customhint>';
450: }
451:
452: sub insert_customhint_answer {
453: return '
454: <answer type="loncapa/perl">
455: </answer>
456: ';
457: }
458:
459: sub insert_mathresponse {
460: return '
461: <mathresponse>
462: <answer>
463: </answer>
464: <textline />
465: <hintgroup>
466: <startouttext />
467: <endouttext />
468: </hintgroup>
469: </mathresponse>';
470: }
471:
472: sub insert_mathresponse_answer {
473: return '
474: <answer>
475: </answer>
476: ';
477: }
478:
479: sub insert_mathhint {
480: return '
481: <mathhint>
482: <answer>
483: </answer>
484: </mathhint>';
485: }
486:
487: sub insert_mathhint_answer {
488: return '
489: <answer>
490: </answer>
491: ';
492: }
493:
494: sub insert_stringresponse {
495: return '
496: <stringresponse answer="" type="">
497: <textline />
498: <hintgroup>
499: <startouttext /><endouttext />
500: </hintgroup>
501: </stringresponse>';
502: }
503:
504: sub insert_essayresponse {
505: return '
506: <essayresponse>
507: <textfield></textfield>
508: </essayresponse>';
509: }
510:
511: sub insert_imageresponse {
512: return '
513: <imageresponse max="1">
514: <foilgroup>
515: <foil>
516: </foil>
517: </foilgroup>
518: <hintgroup>
519: <startouttext /><endouttext />
520: </hintgroup>
521: </imageresponse>';
522: }
523:
524: sub insert_optionresponse {
525: return '
526: <optionresponse max="10">
527: <foilgroup options="">
528: <foil>
529: <startouttext /><endouttext />
530: </foil>
531: </foilgroup>
532: <hintgroup>
533: <startouttext /><endouttext />
534: </hintgroup>
535: </optionresponse>';
536: }
537:
538: sub insert_organicresponse {
539: return '
540: <organicresponse>
541: <textline />
542: <hintgroup>
543: <startouttext /><endouttext />
544: </hintgroup>
545: </organicresponse>';
546: }
547:
548: sub insert_organicstructure {
549: return '
550: <organicstructure />
551: ';
552: }
553:
554: sub insert_radiobuttonresponse {
555: return '
556: <radiobuttonresponse max="10">
557: <foilgroup>
558: <foil>
559: <startouttext /><endouttext />
560: </foil>
561: </foilgroup>
562: <hintgroup>
563: <startouttext /><endouttext />
564: </hintgroup>
565: </radiobuttonresponse>';
566: }
567:
568: sub insert_reactionresponse {
569: return '
570: <reactionresponse>
571: <textline />
572: <hintgroup>
573: <startouttext /><endouttext />
574: </hintgroup>
575: </reactionresponse>';
576: }
577:
578: sub insert_rankresponse {
579: return '
580: <rankresponse max="10">
581: <foilgroup options="">
582: <foil>
583: <startouttext /><endouttext />
584: </foil>
585: </foilgroup>
586: <hintgroup>
587: <startouttext /><endouttext />
588: </hintgroup>
589: </rankresponse>';
590: }
591:
592: sub insert_matchresponse {
593: return '
594: <matchresponse max="10">
595: <foilgroup options="">
596: <itemgroup>
597: </itemgroup>
598: <foil>
599: <startouttext /><endouttext />
600: </foil>
601: </foilgroup>
602: <hintgroup>
603: <startouttext /><endouttext />
604: </hintgroup>
605: </matchresponse>';
606: }
607:
608: sub insert_displayduedate { return '<displayduedate />'; }
609: sub insert_displaytitle { return '<displaytitle />'; }
610: sub insert_hintpart {
611: return '
612: <hintpart on="default">
613: <startouttext/><endouttext />
614: </hintpart>';
615: }
616:
617: sub insert_hintgroup {
618: return '
619: <hintgroup>
620: <startouttext /><endouttext />
621: </hintgroup>';
622: }
623:
624: sub insert_numericalhint {
625: return '
626: <numericalhint>
627: </numericalhint>';
628: }
629:
630: sub insert_stringhint {
631: return '
632: <stringhint>
633: </stringhint>';
634: }
635:
636: sub insert_formulahint {
637: return '
638: <formulahint>
639: </formulahint>';
640: }
641:
642: sub insert_radiobuttonhint {
643: return '
644: <radiobuttonhint>
645: </radiobuttonhint>';
646: }
647:
648: sub insert_optionhint {
649: return '
650: <optionhint>
651: </optionhint>';
652: }
653:
654: sub insert_startouttext {
655: return "<startouttext /><endouttext />";
656: }
657:
658: sub insert_script {
659: return "\n<script type=\"loncapa/perl\"></script>";
660: }
661:
662: sub js_change_detection {
663: my $unsaved=&mt("There are unsaved changes");
664: return (<<SCRIPT);
665: <script type="text/javascript">
666: var clean = true;
667: var is_submit = false;
668: var still_ask = false;
669: function compareForm(event_) {
670: if (!event_ && window.event) {
671: event_ = window.event;
672: }
673: if ((!is_submit || (is_submit && still_ask)) && !clean) {
674: still_ask = false;
675: is_submit = false;
676: event_.returnValue = "$unsaved";
677: return "$unsaved";
678: }
679: }
680: function unClean() {
681: clean=false;
682: }
683: window.onbeforeunload = compareForm;
684: </script>
685: SCRIPT
686: }
687:
688: sub form_change_detection {
689: return ' onsubmit="is_submit=true;" ';
690: }
691:
692: sub element_change_detection {
693: return ' onchange="unClean();" ';
694: }
695:
696: sub submit_ask_anyway {
697: my ($extra_action) = @_;
698: return ' onclick="still_ask=true;'.$extra_action.'" ';
699: }
700:
701: sub textarea_sizes {
702: my ($data)=@_;
703: my $count=0;
704: my $maxlength=-1;
705: foreach (split ("\n", $$data)) {
706: $count+=int(length($_)/79);
707: $count++;
708: if (length($_) > $maxlength) { $maxlength = length($_); }
709: }
710: my $rows = $count;
711: my $cols = $maxlength;
712: return ($rows,$cols);
713: }
714:
715: sub editline {
716: my ($tag,$data,$description,$size)=@_;
717: $data=&HTML::Entities::encode($data,'<>&"');
718: if ($description) { $description=$description."<br />"; }
719: my $change_code = &element_change_detection();
720: my $result = <<"END";
721: $description
722: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
723: value="$data" size="$size" $change_code />
724: END
725: return $result;
726: }
727:
728: sub editfield {
729: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
730:
731: my ($rows,$cols)=&textarea_sizes(\$data);
732: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
733: !&Apache::lonhtmlcommon::htmlareablocked()) {
734: $rows+=7; # make room for HTMLarea
735: $minheight+=7; # make room for HTMLarea
736: }
737: if ($cols > 80) { $cols = 80; }
738: if ($cols < $minwidth ) { $cols = $minwidth; }
739: if ($rows < $minheight) { $rows = $minheight; }
740: if ($description) { $description=$description."<br />"; }
741: if ($usehtmlarea) {
742: &Apache::lonhtmlcommon::add_htmlareafields('homework_edit_'.
743: $Apache::lonxml::curdepth);
744: }
745: # remove typesetting whitespace from between data and the end tag
746: # to make the edit look prettier
747: $data =~ s/\n?[ \t]*$//;
748:
749: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
750: '" cols="'.$cols.'" name="homework_edit_'.
751: $Apache::lonxml::curdepth.'" id="homework_edit_'.
752: $Apache::lonxml::curdepth.'" '.&element_change_detection().'>'.
753: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
754: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
755: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
756: }
757:
758: sub modifiedfield {
759: my ($endtag,$parser) = @_;
760: my $result;
761: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
762: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
763: # textareas throw away intial \n
764: if ($bodytext=~/^\n/) {
765: $result="\n".$result;
766: }
767: # if there is typesetting whitespace from between the data and the end tag
768: # restore to keep the source looking pretty
769: if ($bodytext =~ /(\n?[ \t]*)$/) {
770: $result .= $1;
771: }
772: return $result;
773: }
774:
775: # Returns a 1 if the token has been modified and you should rebuild the tag
776: # side-effects, will modify the $token if new values are found
777: sub get_new_args {
778: my ($token,$parstack,$safeeval,@args)=@_;
779: my $rebuild=0;
780: foreach my $arg (@args) {
781: #just want the string that it was set to
782: my $value=$token->[2]->{$arg};
783: my $element=&html_element_name($arg);
784: my $newvalue=$env{"form.$element"};
785: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
786: if (defined($newvalue) && $value ne $newvalue) {
787: if (ref($newvalue) eq 'ARRAY') {
788: $token->[2]->{$arg}=join(',',@$newvalue);
789: } else {
790: $token->[2]->{$arg}=$newvalue;
791: }
792: $rebuild=1;
793: # add new attributes to the of the attribute seq
794: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
795: push(@{ $token->[3] },$arg);
796: }
797: } elsif (!defined($newvalue) && defined($value)) {
798: delete($token->[2]->{$arg});
799: $rebuild=1;
800: }
801: }
802: return $rebuild;
803: }
804:
805: # looks for /> on start tags
806: sub rebuild_tag {
807: my ($token) = @_;
808: my $result;
809: if ($token->[0] eq 'S') {
810: $result = '<'.$token->[1];
811: foreach my $attribute (@{ $token->[3] }) {
812: my $value = $token->[2]{$attribute};
813: next if ($value eq '');
814: $value =~s/^\s+|\s+$//g;
815: $value =~s/\"//g;
816: &Apache::lonxml::debug("setting :$attribute: to :$value:");
817: $result.=' '.$attribute.'="'.$value.'"';
818: }
819: if ($token->[4] =~ m:/>$:) {
820: $result.=' />';
821: } else {
822: $result.='>';
823: }
824: } elsif ( $token->[0] eq 'E' ) {
825: $result = '</'.$token->[1].'>';
826: }
827: return $result;
828: }
829:
830: sub html_element_name {
831: my ($name) = @_;
832: return $name.'_'.$Apache::lonxml::curdepth;
833: }
834:
835: sub hidden_arg {
836: my ($name,$token) = @_;
837: my $result;
838: my $arg=$token->[2]{$name};
839: $result='<input name="'.&html_element_name($name).
840: '" type="hidden" value="'.$arg.'" />';
841: return $result;
842: }
843:
844: sub checked_arg {
845: my ($description,$name,$list,$token) = @_;
846: my $result;
847: my $optionlist="";
848: my $allselected=$token->[2]{$name};
849: $result=&mt($description);
850: foreach my $option (@$list) {
851: my ($value,$text);
852: if ( ref($option) eq 'ARRAY') {
853: $value='value="'.$$option[0].'"';
854: $text=$$option[1];
855: $option=$$option[0];
856: } else {
857: $text=$option;
858: $value='value="'.$option.'"';
859: }
860: $result.="<nobr><label><input type=\"checkbox\" $value name=\"".
861: &html_element_name($name)."\"";
862: foreach my $selected (split(/,/,$allselected)) {
863: if ( $selected eq $option ) {
864: $result.=" checked=\"checked\" ";
865: last;
866: }
867: }
868: $result.=&element_change_detection()." />$text</label></nobr>\n";
869: }
870: return $result;
871: }
872:
873: sub text_arg {
874: my ($description,$name,$token,$size) = @_;
875: my $result;
876: if (!defined $size) { $size=20; }
877: my $arg=$token->[2]{$name};
878: $result=&mt($description).' <input name="'.&html_element_name($name).
879: '" type="text" value="'.$arg.'" size="'.$size.'" '.
880: &element_change_detection().'/>';
881: return '<nobr>'.$result.'</nobr>';
882: }
883:
884: sub select_arg {
885: my ($description,$name,$list,$token) = @_;
886: my $result;
887: my $optionlist="";
888: my $selected=$token->[2]{$name};
889: foreach my $option (@$list) {
890: my ($text,$value);
891: if ( ref($option) eq 'ARRAY') {
892: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
893: $text=$$option[1];
894: $option=$$option[0];
895: } else {
896: $text=$option;
897: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
898: }
899: if ( $selected eq $option ) {
900: $optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
901: } else {
902: $optionlist.="<option $value >".&mt($text)."</option>\n";
903: }
904: }
905: $result.='<nobr>'.&mt($description).' <select name="'.
906: &html_element_name($name).'" '.&element_change_detection().' >
907: '.$optionlist.'
908: </select></nobr>';
909: return $result;
910: }
911:
912: sub select_or_text_arg {
913: my ($description,$name,$list,$token,$size) = @_;
914: my $result;
915: my $optionlist="";
916: my $found=0;
917: my $selected=$token->[2]{$name};
918: foreach my $option (@$list) {
919: my ($text,$value);
920: if ( ref($option) eq 'ARRAY') {
921: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
922: $text=$$option[1];
923: $option=$$option[0];
924: } else {
925: $text=$option;
926: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
927: }
928: if ( $selected eq $option ) {
929: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
930: $found=1;
931: } else {
932: $optionlist.="<option $value>$text</option>\n";
933: }
934: }
935: $optionlist.="<option value=\"TYPEDINVALUE\"".
936: ((!$found)?' selected="selected"':'').
937: ">".&mt('Type-in value')."</option>\n";
938: #
939: my $change_code=&element_change_detection();
940: my $element=&html_element_name($name);
941: my $selectelement='select_list_'.$element;
942: my $typeinelement='type_in_'.$element;
943: my $typeinvalue=($found?'':$selected);
944: #
945: my $hiddenvalue='this.form.'.$element.'.value';
946: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
947: my $selectedvalue='this.form.'.$selectelement.
948: '.options['.$selectedindex.'].value';
949: my $typedinvalue='this.form.'.$typeinelement.'.value';
950: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
951: $description=&mt($description);
952: #
953: return (<<ENDSELECTORTYPE);
954: <nobr>
955: $description
956: <select name="$selectelement"
957: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
958: $optionlist
959: </select>
960: <input type="text" size="$size" name="$typeinelement"
961: value="$typeinvalue"
962: onChange="$hiddenvalue=$typedinvalue;"
963: onFocus="$selectedindex=$selecttypeinindex-1;" />
964: <input type="hidden" name="$element" value="$selected" $change_code />
965: </nobr>
966: ENDSELECTORTYPE
967: }
968:
969: #----------------------------------------------------- image coordinates
970: # single image coordinates, x, y
971: sub entercoords {
972: my ($idx,$idy,$mode,$width,$height) = @_;
973: unless ($Apache::edit::bgimgsrc) { return ''; }
974: if ($idx) { $idx.='_'; }
975: if ($idy) { $idy.='_'; }
976: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
977: my $form = 'lonhomework';
978: my $element;
979: if (! defined($mode) || $mode eq 'attribute') {
980: $element = &escape("$Apache::lonxml::curdepth");
981: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
982: $element = &escape('homework_edit_'.
983: $Apache::lonxml::curdepth);
984: }
985: my $id=$Apache::lonxml::curdepth;
986: my %data=("imagechoice.$id.type" =>'point',
987: "imagechoice.$id.formname" =>$form,
988: "imagechoice.$id.formx" =>"$idx$element",
989: "imagechoice.$id.formy" =>"$idy$element",
990: "imagechoice.$id.file" =>$bgfile,
991: "imagechoice.$id.formcoord" =>$element);
992: if ($height) {
993: $data{"imagechoice.$id.formheight"}=$height.'_'.
994: $Apache::edit::bgimgsrccurdepth;
995: }
996: if ($width) {
997: $data{"imagechoice.$id.formwidth"}=$width.'_'.
998: $Apache::edit::bgimgsrccurdepth;
999: }
1000: &Apache::lonnet::appenv(\%data);
1001: my $text="Click Coordinates";
1002: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1003: return $result;
1004: }
1005:
1006: # coordinates (x1,y1)-(x2,y2)...
1007: # mode can be either box, or polygon
1008: sub entercoord {
1009: my ($idx,$mode,$width,$height,$type) = @_;
1010: unless ($Apache::edit::bgimgsrc) { return ''; }
1011: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
1012: my $form = 'lonhomework';
1013: my $element;
1014: if (! defined($mode) || $mode eq 'attribute') {
1015: $element = &escape("$idx\_$Apache::lonxml::curdepth");
1016: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1017: $element = &escape('homework_edit_'.
1018: $Apache::lonxml::curdepth);
1019: }
1020: my $id=$Apache::lonxml::curdepth;
1021: my %data=("imagechoice.$id.type" =>$type,
1022: "imagechoice.$id.formname" =>$form,
1023: "imagechoice.$id.file" =>$bgfile,
1024: "imagechoice.$id.formcoord" =>$element);
1025: if ($height) {
1026: $data{"imagechoice.$id.formheight"}=$height.'_'.
1027: $Apache::edit::bgimgsrccurdepth;
1028: }
1029: if ($width) {
1030: $data{"imagechoice.$id.formwidth"}=$width.'_'.
1031: $Apache::edit::bgimgsrccurdepth;
1032: }
1033: &Apache::lonnet::appenv(\%data);
1034: my $text="Enter Coordinates";
1035: if ($type eq 'polygon') { $text='Create Polygon Data'; }
1036: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
1037: return $result;
1038: }
1039:
1040: sub deletecoorddata {
1041: &Apache::lonnet::delenv("imagechoice\\.");
1042: }
1043:
1044: #----------------------------------------------------- browse
1045: sub browse {
1046: # insert a link to call up the filesystem browser (lonindexer)
1047: my ($id, $mode, $titleid, $only) = @_;
1048: my $form = 'lonhomework';
1049: my $element;
1050: if (! defined($mode) || $mode eq 'attribute') {
1051: $element = &escape("$id\_$Apache::lonxml::curdepth");
1052: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1053: $element = &escape('homework_edit_'.
1054: $Apache::lonxml::curdepth);
1055: }
1056: my $titleelement;
1057: if ($titleid) {
1058: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1059: } else {
1060: $titleelement=",'$only'";
1061: }
1062: my $result = <<"ENDBUTTON";
1063: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
1064: ENDBUTTON
1065: return $result;
1066: }
1067:
1068: #----------------------------------------------------- browse
1069: sub search {
1070: # insert a link to call up the filesystem browser (lonindexer)
1071: my ($id, $mode, $titleid) = @_;
1072: my $form = 'lonhomework';
1073: my $element;
1074: if (! defined($mode) || $mode eq 'attribute') {
1075: $element = &escape("$id\_$Apache::lonxml::curdepth");
1076: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
1077: $element = &escape('homework_edit_'.
1078: $Apache::lonxml::curdepth);
1079: }
1080: my $titleelement;
1081: if ($titleid) {
1082: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
1083: }
1084: my $result = <<"ENDBUTTON";
1085: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
1086: ENDBUTTON
1087: return $result;
1088: }
1089:
1090:
1091: 1;
1092: __END__
1093:
1094:
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