File:
[LON-CAPA] /
loncom /
homework /
edit.pm
Revision
1.111:
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Mon Sep 10 23:00:05 2007 UTC (16 years, 10 months ago) by
albertel
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MAIN
CVS tags:
HEAD
- fixes to tag attribute editing wasn't properly handling deletions and
insertions of new tag attributes, new values now go to the end, and
seetings to '' are removed from the tag
1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.111 2007/09/10 23:00:05 albertel 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: package Apache::edit;
30:
31: use strict;
32: use Apache::lonnet;
33: use HTML::Entities();
34: use Apache::lonlocal;
35: use lib '/home/httpd/lib/perl/';
36: use LONCAPA;
37:
38:
39: # Global Vars
40: # default list of colors to use in editing
41: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
42: # depth of nesting of edit
43: $Apache::edit::colordepth=0;
44: @Apache::edit::inserttag=();
45: # image-type responses: active background image and curdepth at definition
46: $Apache::edit::bgimgsrc='';
47: $Apache::edit::bgimgsrccurdepth='';
48:
49: sub initialize_edit {
50: $Apache::edit::colordepth=0;
51: @Apache::edit::inserttag=();
52: }
53:
54: sub tag_start {
55: my ($target,$token,$description) = @_;
56: my $result='';
57: if ($target eq "edit") {
58: my $tag=$token->[1];
59: if (!$description) {
60: $description=&Apache::lonxml::description($token);
61: if (!$description) { $description="<$tag>"; }
62: }
63: $result.= &start_table($token)."<tr><td>$description</td>
64: <td>Delete".
65: &deletelist($target,$token)
66: ."</td>
67: <td>".
68: &insertlist($target,$token);
69: #<td>".
70: # &movebuttons($target,$token).
71: # "</tr><tr><td colspan=\"3\">\n";
72: my @help = Apache::lonxml::helpinfo($token);
73: if ($help[0]) {
74: $result .= '</td><td align="right" valign="top">' .
75: Apache::loncommon::help_open_topic(@help);
76: } else { $result .= "</td><td> "; }
77: $result .= &end_row().&start_spanning_row();
78: }
79: return $result;
80: }
81:
82: sub tag_end {
83: my ($target,$token,$description) = @_;
84: my $result='';
85: if ($target eq 'edit') {
86: $result.="</td></tr>".&end_table()."\n";
87: }
88: return $result;
89: }
90:
91: sub start_table {
92: my ($token)=@_;
93: my $tag = &Apache::lonxml::get_tag($token);
94:
95: my $color = $Apache::lonxml::insertlist{"$tag.color"};
96: &Apache::lonxml::debug(" $tag -- $color");
97: if (!defined($color)) {
98: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
99: }
100: $Apache::edit::colordepth++;
101: push(@Apache::edit::inserttag,$token->[1]);
102: my $result='<div align="right">';
103: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
104: return $result;
105: }
106:
107: sub end_table {
108: $Apache::edit::colordepth--;
109: my $result='</table></div>';
110: $result.='<div align="left"><table><tr><td>';
111:
112: my ($tagname,$closingtag);
113: if (defined($Apache::edit::inserttag[-2])) {
114: $tagname=$Apache::edit::inserttag[-2];
115: } else {
116: if ($Apache::lonhomework::parsing_a_task) {
117: $tagname='Task';
118: } else {
119: $tagname='problem';
120: }
121: }
122: if (defined($Apache::edit::inserttag[-1])) {
123: $closingtag=$Apache::edit::inserttag[-1];
124: }
125: $result.=&innerinsertlist('edit',$tagname,$closingtag).
126: "</td></tr></table></div>";
127: my $last = pop(@Apache::edit::inserttag);
128: return $result;
129: }
130:
131: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';}
132: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
133: sub end_row { return '</td></tr>'; }
134:
135: sub movebuttons {
136: my ($target,$token) = @_;
137: my $result='<input type="submit" name="moveup.'.
138: $Apache::lonxml::curdepth.'" value="Move Up" />';
139: $result.='<input type="submit" name="movedown.'.
140: $Apache::lonxml::curdepth.'" value="Move Down" />';
141: return $result;
142: }
143:
144: sub deletelist {
145: my ($target,$token) = @_;
146: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
147: <option></option>
148: <option>Yes</option>
149: </select>";
150: return $result;
151: }
152:
153: sub handle_delete {
154: if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
155: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
156: my $result=0;
157: if ($space) {
158: my $sub1="$space\:\:delete_$token->[1]";
159: {
160: no strict 'refs';
161: if (defined &$sub1) {
162: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
163: }
164: }
165: }
166: if (!$result) {
167: my $endtag='/'.$token->[1];
168: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style);
169: $$parser['-1']->get_token();
170: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
171: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
172: }
173: return 1;
174: }
175:
176: sub get_insert_list {
177: my ($tagname) = @_;
178: my $result='';
179: my @tags= ();
180: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
181: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
182: push (@tags, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
183: }
184: foreach my $namespace (@Apache::lonxml::namespace) {
185: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
186: push (@tags, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
187: }
188: }
189: if (@tags) {
190: my %options;
191: foreach my $tag (@tags) {
192: my $descrip=$Apache::lonxml::insertlist{"$tag.description"};
193: my $tagnum =$Apache::lonxml::insertlist{"$tag.num"};
194: $options{$descrip} ="<option value=\"$tagnum\">".
195: $descrip."</option>\n";
196: }
197: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
198: if ($result) { $result='<option selected="selected"></option>'.$result; }
199: }
200: return $result;
201: }
202:
203: sub insertlist {
204: my ($target,$token) = @_;
205: return &innerinsertlist($target,$token->[1]);
206: }
207:
208: sub innerinsertlist {
209: my ($target,$tagname,$closingtag) = @_;
210: my $result;
211: my $after='';
212: if ($closingtag) {
213: $after='_after_'.$closingtag;
214: }
215: if ($target eq 'edit') {
216: my $optionlist= &get_insert_list($tagname);
217: if ($optionlist) {
218: $result = "Insert:
219: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
220: $optionlist
221: </select>"
222: } else {
223: $result=" ";
224: }
225: }
226: return $result;
227: }
228:
229: sub handle_insert {
230: if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
231: my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"};
232: return &do_insert($tagnum);
233: }
234:
235: sub handle_insertafter {
236: my $tagname=shift;
237: if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '') {
238: return '';
239: }
240: my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
241: return &do_insert($tagnum,1);
242: }
243:
244: sub do_insert {
245: my ($tagnum,$after) = @_;
246: my $result;
247:
248: my $newtag = $Apache::lonxml::insertlist{"$tagnum.tag"};
249: my $func = $Apache::lonxml::insertlist{"$newtag.function"};
250: if ($func eq 'default') {
251: my $namespace;
252: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
253: my $depth = scalar(@Apache::lonxml::depthcounter);
254: $depth -- if ($after);
255: my $inset = "\t"x$depth;
256: $result.="\n$inset<$newtag>\n$inset</$newtag>";
257: } else {
258: if (defined(&$func)) {
259: {
260: no strict 'refs';
261: $result.=&$func();
262: }
263: } else {
264: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined. ($tagnum)");
265: }
266: }
267: return $result;
268: }
269:
270: sub insert_img {
271: return '
272: <img />';
273: }
274:
275: sub insert_responseparam {
276: return '
277: <responseparam />';
278: }
279:
280: sub insert_parameter {
281: return '
282: <parameter />';
283: }
284:
285: sub insert_formularesponse {
286: return '
287: <formularesponse answer="" samples="">
288: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
289: <textline size="25"/>
290: <hintgroup>
291: <startouttext /><endouttext />
292: </hintgroup>
293: </formularesponse>';
294: }
295:
296: sub insert_numericalresponse {
297: return '
298: <numericalresponse answer="">
299: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
300: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
301: <textline />
302: <hintgroup>
303: <startouttext /><endouttext />
304: </hintgroup>
305: </numericalresponse>';
306: }
307:
308: sub insert_customresponse {
309: return '
310: <customresponse>
311: <answer type="loncapa/perl">
312: </answer>
313: <textline />
314: <hintgroup>
315: <startouttext /><endouttext />
316: </hintgroup>
317: </customresponse>';
318: }
319:
320: sub insert_customresponse_answer {
321: return '
322: <answer type="loncapa/perl">
323: </answer>
324: ';
325: }
326:
327: sub insert_customhint {
328: return '
329: <customhint>
330: <answer type="loncapa/perl">
331: </answer>
332: </customhint>';
333: }
334:
335: sub insert_customhint_answer {
336: return '
337: <answer type="loncapa/perl">
338: </answer>
339: ';
340: }
341:
342: sub insert_mathresponse {
343: return '
344: <mathresponse>
345: <answer>
346: </answer>
347: <textline />
348: <hintgroup>
349: <startouttext />
350: <endouttext />
351: </hintgroup>
352: </mathresponse>';
353: }
354:
355: sub insert_mathresponse_answer {
356: return '
357: <answer>
358: </answer>
359: ';
360: }
361:
362: sub insert_mathhint {
363: return '
364: <mathhint>
365: <answer>
366: </answer>
367: </mathhint>';
368: }
369:
370: sub insert_mathhint_answer {
371: return '
372: <answer>
373: </answer>
374: ';
375: }
376:
377: sub insert_stringresponse {
378: return '
379: <stringresponse answer="" type="">
380: <textline />
381: <hintgroup>
382: <startouttext /><endouttext />
383: </hintgroup>
384: </stringresponse>';
385: }
386:
387: sub insert_essayresponse {
388: return '
389: <essayresponse>
390: <textfield></textfield>
391: </essayresponse>';
392: }
393:
394: sub insert_imageresponse {
395: return '
396: <imageresponse max="1">
397: <foilgroup>
398: <foil>
399: </foil>
400: </foilgroup>
401: <hintgroup>
402: <startouttext /><endouttext />
403: </hintgroup>
404: </imageresponse>';
405: }
406:
407: sub insert_optionresponse {
408: return '
409: <optionresponse max="10">
410: <foilgroup options="">
411: <foil>
412: <startouttext /><endouttext />
413: </foil>
414: </foilgroup>
415: <hintgroup>
416: <startouttext /><endouttext />
417: </hintgroup>
418: </optionresponse>';
419: }
420:
421: sub insert_organicresponse {
422: return '
423: <organicresponse>
424: <textline />
425: <hintgroup>
426: <startouttext /><endouttext />
427: </hintgroup>
428: </organicresponse>';
429: }
430:
431: sub insert_organicstructure {
432: return '
433: <organicstructure />
434: ';
435: }
436:
437: sub insert_radiobuttonresponse {
438: return '
439: <radiobuttonresponse max="10">
440: <foilgroup>
441: <foil>
442: <startouttext /><endouttext />
443: </foil>
444: </foilgroup>
445: <hintgroup>
446: <startouttext /><endouttext />
447: </hintgroup>
448: </radiobuttonresponse>';
449: }
450:
451: sub insert_reactionresponse {
452: return '
453: <reactionresponse>
454: <textline />
455: <hintgroup>
456: <startouttext /><endouttext />
457: </hintgroup>
458: </reactionresponse>';
459: }
460:
461: sub insert_rankresponse {
462: return '
463: <rankresponse max="10">
464: <foilgroup options="">
465: <foil>
466: <startouttext /><endouttext />
467: </foil>
468: </foilgroup>
469: <hintgroup>
470: <startouttext /><endouttext />
471: </hintgroup>
472: </rankresponse>';
473: }
474:
475: sub insert_matchresponse {
476: return '
477: <matchresponse max="10">
478: <foilgroup options="">
479: <itemgroup>
480: </itemgroup>
481: <foil>
482: <startouttext /><endouttext />
483: </foil>
484: </foilgroup>
485: <hintgroup>
486: <startouttext /><endouttext />
487: </hintgroup>
488: </matchresponse>';
489: }
490:
491: sub insert_displayduedate { return '<displayduedate />'; }
492: sub insert_displaytitle { return '<displaytitle />'; }
493: sub insert_hintpart {
494: return '
495: <hintpart on="default">
496: <startouttext/><endouttext />
497: </hintpart>';
498: }
499:
500: sub insert_hintgroup {
501: return '
502: <hintgroup>
503: <startouttext /><endouttext />
504: </hintgroup>';
505: }
506:
507: sub insert_numericalhint {
508: return '
509: <numericalhint>
510: </numericalhint>';
511: }
512:
513: sub insert_stringhint {
514: return '
515: <stringhint>
516: </stringhint>';
517: }
518:
519: sub insert_formulahint {
520: return '
521: <formulahint>
522: </formulahint>';
523: }
524:
525: sub insert_radiobuttonhint {
526: return '
527: <radiobuttonhint>
528: </radiobuttonhint>';
529: }
530:
531: sub insert_optionhint {
532: return '
533: <optionhint>
534: </optionhint>';
535: }
536:
537: sub insert_startouttext {
538: return "<startouttext /><endouttext />";
539: }
540:
541: sub insert_script {
542: return "\n<script type=\"loncapa/perl\"></script>";
543: }
544:
545: sub js_change_detection {
546: my $unsaved=&mt("There are unsaved changes");
547: return (<<SCRIPT);
548: <script type="text/javascript">
549: var clean = true;
550: var is_submit = false;
551: var still_ask = false;
552: function compareForm(event_) {
553: if (!event_ && window.event) {
554: event_ = window.event;
555: }
556: if ((!is_submit || (is_submit && still_ask)) && !clean) {
557: still_ask = false;
558: is_submit = false;
559: event_.returnValue = "$unsaved";
560: return "$unsaved";
561: }
562: }
563: function unClean() {
564: clean=false;
565: }
566: window.onbeforeunload = compareForm;
567: </script>
568: SCRIPT
569: }
570:
571: sub form_change_detection {
572: return ' onsubmit="is_submit=true;" ';
573: }
574:
575: sub element_change_detection {
576: return ' onchange="unClean();" ';
577: }
578:
579: sub submit_ask_anyway {
580: return ' onclick="still_ask=true;" ';
581: }
582:
583: sub textarea_sizes {
584: my ($data)=@_;
585: my $count=0;
586: my $maxlength=-1;
587: foreach (split ("\n", $$data)) {
588: $count+=int(length($_)/79);
589: $count++;
590: if (length($_) > $maxlength) { $maxlength = length($_); }
591: }
592: my $rows = $count;
593: my $cols = $maxlength;
594: return ($rows,$cols);
595: }
596:
597: sub editline {
598: my ($tag,$data,$description,$size)=@_;
599: $data=&HTML::Entities::encode($data,'<>&"');
600: if ($description) { $description="<br />".$description."<br />"; }
601: my $change_code = &element_change_detection();
602: my $result = <<"END";
603: $description
604: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
605: value="$data" size="$size" $change_code />
606: END
607: return $result;
608: }
609:
610: sub editfield {
611: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
612:
613: my ($rows,$cols)=&textarea_sizes(\$data);
614: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
615: !&Apache::lonhtmlcommon::htmlareablocked()) {
616: $rows+=7; # make room for HTMLarea
617: $minheight+=7; # make room for HTMLarea
618: }
619: if ($cols > 80) { $cols = 80; }
620: if ($cols < $minwidth ) { $cols = $minwidth; }
621: if ($rows < $minheight) { $rows = $minheight; }
622: if ($description) { $description="<br />".$description."<br />"; }
623: if ($usehtmlarea) {
624: &Apache::lonhtmlcommon::add_htmlareafields('homework_edit_'.
625: $Apache::lonxml::curdepth);
626: }
627: # remove typesetting whitespace from between data and the end tag
628: # to make the edit look prettier
629: $data =~ s/\n?[ \t]*$//;
630:
631: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
632: '" cols="'.$cols.'" name="homework_edit_'.
633: $Apache::lonxml::curdepth.'" id="homework_edit_'.
634: $Apache::lonxml::curdepth.'" '.&element_change_detection().'>'.
635: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
636: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
637: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
638: }
639:
640: sub modifiedfield {
641: my ($endtag,$parser) = @_;
642: my $result;
643: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
644: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
645: # textareas throw away intial \n
646: if ($bodytext=~/^\n/) {
647: $result="\n".$result;
648: }
649: # if there is typesetting whitespace from between the data and the end tag
650: # restore to keep the source looking pretty
651: if ($bodytext =~ /(\n?[ \t]*)$/) {
652: $result .= $1;
653: }
654: return $result;
655: }
656:
657: # Returns a 1 if the token has been modified and you should rebuild the tag
658: # side-effects, will modify the $token if new values are found
659: sub get_new_args {
660: my ($token,$parstack,$safeeval,@args)=@_;
661: my $rebuild=0;
662: foreach my $arg (@args) {
663: #just want the string that it was set to
664: my $value=$token->[2]->{$arg};
665: my $element=&html_element_name($arg);
666: my $newvalue=$env{"form.$element"};
667: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
668: if (defined($newvalue) && $value ne $newvalue) {
669: if (ref($newvalue) eq 'ARRAY') {
670: $token->[2]->{$arg}=join(',',@$newvalue);
671: } else {
672: $token->[2]->{$arg}=$newvalue;
673: }
674: $rebuild=1;
675: # add new attributes to the of the attribute seq
676: if (!grep { $arg eq $_ } (@{ $token->[3] })) {
677: push(@{ $token->[3] },$arg);
678: }
679: } elsif (!defined($newvalue) && defined($value)) {
680: delete($token->[2]->{$arg});
681: $rebuild=1;
682: }
683: }
684: return $rebuild;
685: }
686:
687: # looks for /> on start tags
688: sub rebuild_tag {
689: my ($token) = @_;
690: my $result;
691: if ($token->[0] eq 'S') {
692: $result = '<'.$token->[1];
693: foreach my $attribute (@{ $token->[3] }) {
694: my $value = $token->[2]{$attribute};
695: next if ($value eq '');
696: $value =~s/^\s+|\s+$//g;
697: $value =~s/\"//g;
698: &Apache::lonxml::debug("setting :$attribute: to :$value:");
699: $result.=' '.$attribute.'="'.$value.'"';
700: }
701: if ($token->[4] =~ m:/>$:) {
702: $result.=' />';
703: } else {
704: $result.='>';
705: }
706: } elsif ( $token->[0] eq 'E' ) {
707: $result = '</'.$token->[1].'>';
708: }
709: return $result;
710: }
711:
712: sub html_element_name {
713: my ($name) = @_;
714: return $name.'_'.$Apache::lonxml::curdepth;
715: }
716:
717: sub hidden_arg {
718: my ($name,$token) = @_;
719: my $result;
720: my $arg=$token->[2]{$name};
721: $result='<input name="'.&html_element_name($name).
722: '" type="hidden" value="'.$arg.'" />';
723: return $result;
724: }
725:
726: sub checked_arg {
727: my ($description,$name,$list,$token) = @_;
728: my $result;
729: my $optionlist="";
730: my $allselected=$token->[2]{$name};
731: $result=&mt($description);
732: foreach my $option (@$list) {
733: my ($value,$text);
734: if ( ref($option) eq 'ARRAY') {
735: $value='value="'.$$option[0].'"';
736: $text=$$option[1];
737: $option=$$option[0];
738: } else {
739: $text=$option;
740: $value='value="'.$option.'"';
741: }
742: $result.="<nobr><label><input type='checkbox' $value name='".
743: &html_element_name($name)."'";
744: foreach my $selected (split(/,/,$allselected)) {
745: if ( $selected eq $option ) {
746: $result.=" checked='checked' ";
747: last;
748: }
749: }
750: $result.=&element_change_detection()." />$text</label></nobr>\n";
751: }
752: return $result;
753: }
754:
755: sub text_arg {
756: my ($description,$name,$token,$size) = @_;
757: my $result;
758: if (!defined $size) { $size=20; }
759: my $arg=$token->[2]{$name};
760: $result=&mt($description).' <input name="'.&html_element_name($name).
761: '" type="text" value="'.$arg.'" size="'.$size.'" '.
762: &element_change_detection().'/>';
763: return '<nobr>'.$result.'</nobr>';
764: }
765:
766: sub select_arg {
767: my ($description,$name,$list,$token) = @_;
768: my $result;
769: my $optionlist="";
770: my $selected=$token->[2]{$name};
771: foreach my $option (@$list) {
772: my ($text,$value);
773: if ( ref($option) eq 'ARRAY') {
774: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
775: $text=$$option[1];
776: $option=$$option[0];
777: } else {
778: $text=$option;
779: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
780: }
781: if ( $selected eq $option ) {
782: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
783: } else {
784: $optionlist.="<option $value >$text</option>\n";
785: }
786: }
787: $result.='<nobr>'.$description.' <select name="'.
788: &html_element_name($name).'" '.&element_change_detection().' >
789: '.$optionlist.'
790: </select></nobr>';
791: return $result;
792: }
793:
794: sub select_or_text_arg {
795: my ($description,$name,$list,$token,$size) = @_;
796: my $result;
797: my $optionlist="";
798: my $found=0;
799: my $selected=$token->[2]{$name};
800: foreach my $option (@$list) {
801: my ($text,$value);
802: if ( ref($option) eq 'ARRAY') {
803: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
804: $text=$$option[1];
805: $option=$$option[0];
806: } else {
807: $text=$option;
808: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
809: }
810: if ( $selected eq $option ) {
811: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
812: $found=1;
813: } else {
814: $optionlist.="<option $value>$text</option>\n";
815: }
816: }
817: $optionlist.="<option value=\"TYPEDINVALUE\"".
818: ((!$found)?' selected="selected"':'').
819: ">".&mt('Type-in value')."</option>\n";
820: #
821: my $change_code=&element_change_detection();
822: my $element=&html_element_name($name);
823: my $selectelement='select_list_'.$element;
824: my $typeinelement='type_in_'.$element;
825: my $typeinvalue=($found?'':$selected);
826: #
827: my $hiddenvalue='this.form.'.$element.'.value';
828: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
829: my $selectedvalue='this.form.'.$selectelement.
830: '.options['.$selectedindex.'].value';
831: my $typedinvalue='this.form.'.$typeinelement.'.value';
832: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
833: $description=&mt($description);
834: #
835: return (<<ENDSELECTORTYPE);
836: <nobr>
837: $description
838: <select name="$selectelement"
839: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
840: $optionlist
841: </select>
842: <input type="text" size="$size" name="$typeinelement"
843: value="$typeinvalue"
844: onChange="$hiddenvalue=$typedinvalue;"
845: onFocus="$selectedindex=$selecttypeinindex-1;" />
846: <input type="hidden" name="$element" value="$selected" $change_code />
847: </nobr>
848: ENDSELECTORTYPE
849: }
850:
851: #----------------------------------------------------- image coordinates
852: # single image coordinates, x, y
853: sub entercoords {
854: my ($idx,$idy,$mode,$width,$height) = @_;
855: unless ($Apache::edit::bgimgsrc) { return ''; }
856: if ($idx) { $idx.='_'; }
857: if ($idy) { $idy.='_'; }
858: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
859: my $form = 'lonhomework';
860: my $element;
861: if (! defined($mode) || $mode eq 'attribute') {
862: $element = &escape("$Apache::lonxml::curdepth");
863: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
864: $element = &escape('homework_edit_'.
865: $Apache::lonxml::curdepth);
866: }
867: my $id=$Apache::lonxml::curdepth;
868: my %data=("imagechoice.$id.type" =>'point',
869: "imagechoice.$id.formname" =>$form,
870: "imagechoice.$id.formx" =>"$idx$element",
871: "imagechoice.$id.formy" =>"$idy$element",
872: "imagechoice.$id.file" =>$bgfile,
873: "imagechoice.$id.formcoord" =>$element);
874: if ($height) {
875: $data{"imagechoice.$id.formheight"}=$height.'_'.
876: $Apache::edit::bgimgsrccurdepth;
877: }
878: if ($width) {
879: $data{"imagechoice.$id.formwidth"}=$width.'_'.
880: $Apache::edit::bgimgsrccurdepth;
881: }
882: &Apache::lonnet::appenv(%data);
883: my $text="Click Coordinates";
884: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
885: return $result;
886: }
887:
888: # coordinates (x1,y1)-(x2,y2)...
889: # mode can be either box, or polygon
890: sub entercoord {
891: my ($idx,$mode,$width,$height,$type) = @_;
892: unless ($Apache::edit::bgimgsrc) { return ''; }
893: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
894: my $form = 'lonhomework';
895: my $element;
896: if (! defined($mode) || $mode eq 'attribute') {
897: $element = &escape("$idx\_$Apache::lonxml::curdepth");
898: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
899: $element = &escape('homework_edit_'.
900: $Apache::lonxml::curdepth);
901: }
902: my $id=$Apache::lonxml::curdepth;
903: my %data=("imagechoice.$id.type" =>$type,
904: "imagechoice.$id.formname" =>$form,
905: "imagechoice.$id.file" =>$bgfile,
906: "imagechoice.$id.formcoord" =>$element);
907: if ($height) {
908: $data{"imagechoice.$id.formheight"}=$height.'_'.
909: $Apache::edit::bgimgsrccurdepth;
910: }
911: if ($width) {
912: $data{"imagechoice.$id.formwidth"}=$width.'_'.
913: $Apache::edit::bgimgsrccurdepth;
914: }
915: &Apache::lonnet::appenv(%data);
916: my $text="Enter Coordinates";
917: if ($type eq 'polygon') { $text='Create Polygon Data'; }
918: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
919: return $result;
920: }
921:
922: sub deletecoorddata {
923: &Apache::lonnet::delenv("imagechoice\\.");
924: }
925:
926: #----------------------------------------------------- browse
927: sub browse {
928: # insert a link to call up the filesystem browser (lonindexer)
929: my ($id, $mode, $titleid, $only) = @_;
930: my $form = 'lonhomework';
931: my $element;
932: if (! defined($mode) || $mode eq 'attribute') {
933: $element = &escape("$id\_$Apache::lonxml::curdepth");
934: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
935: $element = &escape('homework_edit_'.
936: $Apache::lonxml::curdepth);
937: }
938: my $titleelement;
939: if ($titleid) {
940: $titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
941: } else {
942: $titleelement=",'$only'";
943: }
944: my $result = <<"ENDBUTTON";
945: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
946: ENDBUTTON
947: return $result;
948: }
949:
950: #----------------------------------------------------- browse
951: sub search {
952: # insert a link to call up the filesystem browser (lonindexer)
953: my ($id, $mode, $titleid) = @_;
954: my $form = 'lonhomework';
955: my $element;
956: if (! defined($mode) || $mode eq 'attribute') {
957: $element = &escape("$id\_$Apache::lonxml::curdepth");
958: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
959: $element = &escape('homework_edit_'.
960: $Apache::lonxml::curdepth);
961: }
962: my $titleelement;
963: if ($titleid) {
964: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
965: }
966: my $result = <<"ENDBUTTON";
967: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
968: ENDBUTTON
969: return $result;
970: }
971:
972:
973: 1;
974: __END__
975:
976: =head1 NAME
977:
978: Apache::edit - edit mode helpers
979:
980: =head1 SYNOPSIS
981:
982: Invoked by many homework and xml related modules.
983:
984: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
985:
986: =head1 INTRODUCTION
987:
988: This module outputs HTML syntax helpful for the rendering of edit
989: mode interfaces.
990:
991: This is part of the LearningOnline Network with CAPA project
992: described at http://www.lon-capa.org.
993:
994: =head1 HANDLER SUBROUTINE
995:
996: There is no handler subroutine.
997:
998: =head1 OTHER SUBROUTINES
999:
1000: =over 4
1001:
1002: =item *
1003:
1004: initialize_edit() : initialize edit (set colordepth to zero)
1005:
1006: =item *
1007:
1008: tag_start($target,$token,$description) : provide deletion and insertion lists
1009: for the manipulation of a start tag; return a scalar string
1010:
1011: =item *
1012:
1013: tag_end($target,$token,$description) : ending syntax corresponding to
1014: &tag_start. return a scalar string.
1015:
1016: =item *
1017:
1018: start_table($token) : start table; update colordepth; return scalar string.
1019:
1020: =item *
1021:
1022: end_table() : reduce color depth; end table; return scalar string
1023:
1024: =item *
1025:
1026: start_spanning_row() : start a new table row spanning the 'edit' environment.
1027:
1028: =item *
1029:
1030: start_row() : start a new table row and element.
1031:
1032: =item *
1033:
1034: end_row() : end current table element and row.
1035:
1036: =item *
1037:
1038: movebuttons($target,$token) : move-up and move-down buttons; return scalar
1039: string
1040:
1041: =item *
1042:
1043: deletelist($target,$token) : provide a yes option in an HTML select element;
1044: return scalar string
1045:
1046: =item *
1047:
1048: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
1049: $style) : respond to a user delete request by passing relevant stack
1050: and array information to various rendering functions; return a scalar string
1051:
1052: =item *
1053:
1054: get_insert_list($token) : provide an insertion list based on possibilities
1055: from lonxml; return a scalar string
1056:
1057: =item *
1058:
1059: insertlist($target,$token) : api that uses get_insert_list;
1060: return a scalar string
1061:
1062: =item *
1063:
1064: handleinsert($token) : provide an insertion list based on possibilities
1065: from lonxml; return a scalar string
1066:
1067: =item *
1068:
1069: get_insert_list($token) : provide an insertion list based on possibilities
1070: from lonxml; return a scalar string
1071:
1072: =item *
1073: browse($elementname) : provide a link which will open up the filesystem
1074: browser (lonindexer) and, once a file is selected, place the result in
1075: the form element $elementname.
1076:
1077: =item *
1078: search($elementname) : provide a link which will open up the filesystem
1079: searcher (lonsearchcat) and, once a file is selected, place the result in
1080: the form element $elementname.
1081:
1082: =item *
1083: editline(tag,data,description,size): Provide a <input type="text" ../> for
1084: single-line text entry. This is to be used for text enclosed by tags, not
1085: arguements/parameters associated with a tag.
1086:
1087: =back
1088:
1089: incomplete...
1090:
1091: =cut
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