1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.99 2005/12/22 22:06:54 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:
36: # Global Vars
37: # default list of colors to use in editing
38: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
39: # depth of nesting of edit
40: $Apache::edit::colordepth=0;
41: @Apache::edit::inserttag=();
42: # image-type responses: active background image and curdepth at definition
43: $Apache::edit::bgimgsrc='';
44: $Apache::edit::bgimgsrccurdepth='';
45:
46: sub initialize_edit {
47: $Apache::edit::colordepth=0;
48: @Apache::edit::inserttag=();
49: }
50:
51: sub tag_start {
52: my ($target,$token,$description) = @_;
53: my $result='';
54: if ($target eq "edit") {
55: my $tag=$token->[1];
56: if (!$description) {
57: $description=&Apache::lonxml::description($token);
58: if (!$description) { $description="<$tag>"; }
59: }
60: $result.= &start_table($token)."<tr><td>$description</td>
61: <td>Delete".
62: &deletelist($target,$token)
63: ."</td>
64: <td>".
65: &insertlist($target,$token);
66: #<td>".
67: # &movebuttons($target,$token).
68: # "</tr><tr><td colspan=\"3\">\n";
69: my @help = Apache::lonxml::helpinfo($token);
70: if ($help[0]) {
71: $result .= '</td><td align="right" valign="top">' .
72: Apache::loncommon::help_open_topic(@help);
73: } else { $result .= "</td><td> "; }
74: $result .= &end_row().&start_spanning_row();
75: }
76: return $result;
77: }
78:
79: sub tag_end {
80: my ($target,$token,$description) = @_;
81: my $result='';
82: if ($target eq 'edit') {
83: $result.="</td></tr>".&end_table()."\n";
84: }
85: return $result;
86: }
87:
88: sub start_table {
89: my ($token)=@_;
90: my $tag = $token->[1];
91: my $tagnum;
92: foreach my $namespace (reverse @Apache::lonxml::namespace) {
93: my $testtag=$namespace.'::'.$tag;
94: $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
95: &Apache::lonxml::debug(" $testtag ");
96: if (defined($tagnum)) { last; }
97: }
98: if (!defined ($tagnum)) {$tagnum=$Apache::lonxml::insertlist{"$tag.num"};}
99: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
100: &Apache::lonxml::debug(" $tagnum -- $color");
101: if (!defined($color)) {
102: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
103: }
104: $Apache::edit::colordepth++;
105: push(@Apache::edit::inserttag,$token->[1]);
106: my $result='<div align="right">';
107: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
108: return $result;
109: }
110:
111: sub end_table {
112: $Apache::edit::colordepth--;
113: my $result='</table></div>';
114: $result.='<div align="left"><table><tr><td>';
115:
116: my ($tagname,$closingtag);
117: if (defined($Apache::edit::inserttag[-2])) {
118: $tagname=$Apache::edit::inserttag[-2];
119: } else {$tagname='problem';}
120: if (defined($Apache::edit::inserttag[-1])) {
121: $closingtag=$Apache::edit::inserttag[-1];
122: }
123: $result.=&innerinsertlist('edit',$tagname,$closingtag).
124: "</td></tr></table></div>";
125: pop(@Apache::edit::inserttag);
126: return $result;
127: }
128:
129: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';}
130: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
131: sub end_row { return '</td></tr>'; }
132:
133: sub movebuttons {
134: my ($target,$token) = @_;
135: my $result='<input type="submit" name="moveup.'.
136: $Apache::lonxml::curdepth.'" value="Move Up" />';
137: $result.='<input type="submit" name="movedown.'.
138: $Apache::lonxml::curdepth.'" value="Move Down" />';
139: return $result;
140: }
141:
142: sub deletelist {
143: my ($target,$token) = @_;
144: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
145: <option></option>
146: <option>Yes</option>
147: </select>";
148: return $result;
149: }
150:
151: sub handle_delete {
152: if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
153: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
154: my $result=0;
155: if ($space) {
156: my $sub1="$space\:\:delete_$token->[1]";
157: {
158: no strict 'refs';
159: if (defined &$sub1) {
160: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
161: }
162: }
163: }
164: if (!$result) {
165: my $endtag='/'.$token->[1];
166: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style);
167: $$parser['-1']->get_token();
168: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
169: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
170: }
171: return 1;
172: }
173:
174: sub get_insert_list {
175: my ($tagname) = @_;
176: my $result='';
177: my @tagnums= ();
178: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
179: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
180: push (@tagnums, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
181: }
182: foreach my $namespace (@Apache::lonxml::namespace) {
183: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
184: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
185: }
186: }
187: if (@tagnums) {
188: my %options;
189: foreach my $tagnum (@tagnums) {
190: my $descrip=$Apache::lonxml::insertlist{"$tagnum.description"};
191: $options{$descrip} ="<option value=\"$tagnum\">".
192: $descrip."</option>\n";
193: }
194: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
195: if ($result) { $result='<option selected="selected"></option>'.$result; }
196: }
197: return $result;
198: }
199:
200: sub insertlist {
201: my ($target,$token) = @_;
202: return &innerinsertlist($target,$token->[1]);
203: }
204:
205: sub innerinsertlist {
206: my ($target,$tagname,$closingtag) = @_;
207: my $result;
208: my $after='';
209: if ($closingtag) {
210: $after='_after_'.$closingtag;
211: }
212: if ($target eq 'edit') {
213: my $optionlist= &get_insert_list($tagname);
214: if ($optionlist) {
215: $result = "Insert:
216: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
217: $optionlist
218: </select>"
219: } else {
220: $result=" ";
221: }
222: }
223: return $result;
224: }
225:
226: sub handle_insert {
227: if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
228: my $result;
229: my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"};
230: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
231: if ($func eq 'default') {
232: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
233: my $namespace;
234: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
235: $result.="\n<$newtag>\n</$newtag>";
236: } else {
237: if (defined(&$func)) {
238: {
239: no strict 'refs';
240: $result.=&$func();
241: }
242: } else {
243: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
244: &Apache::lonxml::error("Unable to insert tag ".$Apache::lonxml::curdepth." ($tagnum) $newtag, func was not defined.");
245: }
246: }
247: return $result;
248: }
249:
250: sub handle_insertafter {
251: my $tagname=shift;
252: if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '')
253: { return ''; }
254: my $result;
255: my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
256: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
257: if ($func eq 'default') {
258: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
259: my $namespace;
260: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
261: $result.="\n<$newtag>\n</$newtag>";
262: } else {
263: if (defined(&$func)) {
264: {
265: no strict 'refs';
266: $result.=&$func();
267: }
268: } else {
269: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
270: &Apache::lonxml::error("Unable to insert (after) tag $newtag, $func was not defined. ($tagname $tagnum)");
271: }
272: }
273: return $result;
274: }
275:
276: sub insert_img {
277: return '
278: <img />';
279: }
280:
281: sub insert_responseparam {
282: return '
283: <responseparam />';
284: }
285:
286: sub insert_parameter {
287: return '
288: <parameter />';
289: }
290:
291: sub insert_formularesponse {
292: return '
293: <formularesponse answer="" samples="">
294: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
295: <textline size="25"/>
296: <hintgroup>
297: <startouttext /><endouttext />
298: </hintgroup>
299: </formularesponse>';
300: }
301:
302: sub insert_numericalresponse {
303: return '
304: <numericalresponse answer="">
305: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
306: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
307: <textline />
308: <hintgroup>
309: <startouttext /><endouttext />
310: </hintgroup>
311: </numericalresponse>';
312: }
313:
314: sub insert_customresponse {
315: return '
316: <customresponse>
317: <answer type="loncapa/perl">
318: </answer>
319: <textline />
320: <hintgroup>
321: <startouttext /><endouttext />
322: </hintgroup>
323: </customresponse>';
324: }
325:
326: sub insert_customresponse_answer {
327: return '
328: <answer type="loncapa/perl">
329: </answer>
330: ';
331: }
332:
333: sub insert_stringresponse {
334: return '
335: <stringresponse answer="" type="">
336: <textline />
337: <hintgroup>
338: <startouttext /><endouttext />
339: </hintgroup>
340: </stringresponse>';
341: }
342:
343: sub insert_essayresponse {
344: return '
345: <essayresponse>
346: <textfield></textfield>
347: </essayresponse>';
348: }
349:
350: sub insert_imageresponse {
351: return '
352: <imageresponse max="1">
353: <foilgroup>
354: <foil>
355: </foil>
356: </foilgroup>
357: <hintgroup>
358: <startouttext /><endouttext />
359: </hintgroup>
360: </imageresponse>';
361: }
362:
363: sub insert_optionresponse {
364: return '
365: <optionresponse max="10">
366: <foilgroup options="">
367: <foil>
368: <startouttext /><endouttext />
369: </foil>
370: </foilgroup>
371: <hintgroup>
372: <startouttext /><endouttext />
373: </hintgroup>
374: </optionresponse>';
375: }
376:
377: sub insert_organicresponse {
378: return '
379: <organicresponse>
380: <textline />
381: <hintgroup>
382: <startouttext /><endouttext />
383: </hintgroup>
384: </organicresponse>';
385: }
386:
387: sub insert_organicstructure {
388: return '
389: <organicstructure />
390: ';
391: }
392:
393: sub insert_radiobuttonresponse {
394: return '
395: <radiobuttonresponse max="10">
396: <foilgroup>
397: <foil>
398: <startouttext /><endouttext />
399: </foil>
400: </foilgroup>
401: <hintgroup>
402: <startouttext /><endouttext />
403: </hintgroup>
404: </radiobuttonresponse>';
405: }
406:
407: sub insert_reactionresponse {
408: return '
409: <reactionresponse>
410: <textline />
411: <hintgroup>
412: <startouttext /><endouttext />
413: </hintgroup>
414: </reactionresponse>';
415: }
416:
417: sub insert_rankresponse {
418: return '
419: <rankresponse max="10">
420: <foilgroup options="">
421: <foil>
422: <startouttext /><endouttext />
423: </foil>
424: </foilgroup>
425: <hintgroup>
426: <startouttext /><endouttext />
427: </hintgroup>
428: </rankresponse>';
429: }
430:
431: sub insert_matchresponse {
432: return '
433: <matchresponse max="10">
434: <foilgroup options="">
435: <itemgroup>
436: </itemgroup>
437: <foil>
438: <startouttext /><endouttext />
439: </foil>
440: </foilgroup>
441: <hintgroup>
442: <startouttext /><endouttext />
443: </hintgroup>
444: </matchresponse>';
445: }
446:
447: sub insert_displayduedate { return '<displayduedate />'; }
448: sub insert_displaytitle { return '<displaytitle />'; }
449: sub insert_hintpart {
450: return '
451: <hintpart on="default">
452: <startouttext/><endouttext />
453: </hintpart>';
454: }
455:
456: sub insert_hintgroup {
457: return '
458: <hintgroup>
459: <startouttext /><endouttext />
460: </hintgroup>';
461: }
462:
463: sub insert_numericalhint {
464: return '
465: <numericalhint>
466: </numericalhint>';
467: }
468:
469: sub insert_stringhint {
470: return '
471: <stringhint>
472: </stringhint>';
473: }
474:
475: sub insert_formulahint {
476: return '
477: <formulahint>
478: </formulahint>';
479: }
480:
481: sub insert_radiobuttonhint {
482: return '
483: <radiobuttonhint>
484: </radiobuttonhint>';
485: }
486:
487: sub insert_optionhint {
488: return '
489: <optionhint>
490: </optionhint>';
491: }
492:
493: sub insert_startouttext {
494: return "<startouttext /><endouttext />";
495: }
496:
497: sub insert_script {
498: return "\n<script type=\"loncapa/perl\"></script>";
499: }
500:
501: sub js_change_detection {
502: my $unsaved=&mt("There are unsaved changes");
503: return (<<SCRIPT);
504: <script type="text/javascript">
505: var clean = true;
506: var is_submit = false;
507: var still_ask = false;
508: function compareForm(event_) {
509: if (!event_ && window.event) {
510: event_ = window.event;
511: }
512: if ((!is_submit || (is_submit && still_ask)) && !clean) {
513: still_ask = false;
514: is_submit = false;
515: event_.returnValue = "$unsaved";
516: return "$unsaved";
517: }
518: }
519: function unClean() {
520: clean=false;
521: }
522: window.onbeforeunload = compareForm;
523: </script>
524: SCRIPT
525: }
526:
527: sub form_change_detection {
528: return ' onsubmit="is_submit=true;" ';
529: }
530:
531: sub element_change_detection {
532: return ' onchange="unClean();" ';
533: }
534:
535: sub submit_ask_anyway {
536: return ' onclick="still_ask=true;" ';
537: }
538:
539: sub textarea_sizes {
540: my ($data)=@_;
541: my $count=0;
542: my $maxlength=-1;
543: foreach (split ("\n", $$data)) {
544: $count+=int(length($_)/79);
545: $count++;
546: if (length($_) > $maxlength) { $maxlength = length($_); }
547: }
548: my $rows = $count;
549: my $cols = $maxlength;
550: return ($rows,$cols);
551: }
552:
553: sub editline {
554: my ($tag,$data,$description,$size)=@_;
555: $data=&HTML::Entities::encode($data,'<>&"');
556: if ($description) { $description="<br />".$description."<br />"; }
557: my $change_code = &element_change_detection();
558: my $result = <<"END";
559: $description
560: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
561: value="$data" size="$size" $change_code />
562: END
563: return $result;
564: }
565:
566: sub editfield {
567: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
568:
569: my ($rows,$cols)=&textarea_sizes(\$data);
570: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
571: !&Apache::lonhtmlcommon::htmlareablocked()) {
572: $rows+=7; # make room for HTMLarea
573: $minheight+=7; # make room for HTMLarea
574: }
575: if ($cols > 80) { $cols = 80; }
576: if ($cols < $minwidth ) { $cols = $minwidth; }
577: if ($rows < $minheight) { $rows = $minheight; }
578: if ($description) { $description="<br />".$description."<br />"; }
579: if ($usehtmlarea) {
580: push @Apache::lonxml::htmlareafields,'homework_edit_'.
581: $Apache::lonxml::curdepth;
582: }
583: return $description."\n".' <textarea style="width:100%" rows="'.$rows.
584: '" cols="'.$cols.'" name="homework_edit_'.
585: $Apache::lonxml::curdepth.'" id="homework_edit_'.
586: $Apache::lonxml::curdepth.'" '.&element_change_detection().'>'.
587: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
588: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
589: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
590: }
591:
592: sub modifiedfield {
593: my ($endtag,$parser) = @_;
594: my $result;
595: # foreach my $envkey (sort keys %env) {
596: # &Apache::lonxml::debug("$envkey ---- $env{$envkey}");
597: # }
598: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
599: # &Apache::lonxml::debug($env{"form.homework_edit_$Apache::lonxml::curdepth"});
600: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
601: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
602: # textareas throw away intial \n
603: if ($bodytext=~/^\n/) { $result="\n".$result; }
604: return $result;
605: }
606:
607: # Returns a 1 if the token has been modified and you should rebuild the tag
608: # side-effects, will modify the $token if new values are found
609: sub get_new_args {
610: my ($token,$parstack,$safeeval,@args)=@_;
611: my $rebuild=0;
612: foreach my $arg (@args) {
613: #just want the string that it was set to
614: my $value=$token->[2]->{$arg};
615: my $element=&html_element_name($arg);
616: my $newvalue=$env{"form.$element"};
617: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
618: if (defined($newvalue) && $value ne $newvalue) {
619: if (ref($newvalue) eq 'ARRAY') {
620: $token->[2]->{$arg}=join(',',@$newvalue);
621: } else {
622: $token->[2]->{$arg}=$newvalue;
623: }
624: $rebuild=1;
625: } elsif (!defined($newvalue) && defined($value)) {
626: delete($token->[2]->{$arg});
627: $rebuild=1;
628: }
629: }
630: return $rebuild;
631: }
632:
633: # looks for /> on start tags
634: sub rebuild_tag {
635: my ($token) = @_;
636: my $result;
637: if ($token->[0] eq 'S') {
638: $result = '<'.$token->[1];
639: while (my ($key,$val)= each(%{$token->[2]})) {
640: $val=~s:^\s+|\s+$::g;
641: $val=~s:"::g; #"
642: &Apache::lonxml::debug("setting :$key: to :$val:");
643: $result.=' '.$key.'="'.$val.'"';
644: }
645: if ($token->[4] =~ m:/>$:) {
646: $result.=' />';
647: } else {
648: $result.='>';
649: }
650: } elsif ( $token->[0] eq 'E' ) {
651: $result = '</'.$token->[1].'>';
652: }
653: return $result;
654: }
655:
656: sub html_element_name {
657: my ($name) = @_;
658: return $name.'_'.$Apache::lonxml::curdepth;
659: }
660:
661: sub hidden_arg {
662: my ($name,$token) = @_;
663: my $result;
664: my $arg=$token->[2]{$name};
665: $result='<input name="'.&html_element_name($name).
666: '" type="hidden" value="'.$arg.'" />';
667: return $result;
668: }
669:
670: sub checked_arg {
671: my ($description,$name,$list,$token) = @_;
672: my $result;
673: my $optionlist="";
674: my $allselected=$token->[2]{$name};
675: $result=&mt($description);
676: foreach my $option (@$list) {
677: my ($value,$text);
678: if ( ref($option) eq 'ARRAY') {
679: $value='value="'.$$option[0].'"';
680: $text=$$option[1];
681: $option=$$option[0];
682: } else {
683: $text=$option;
684: $value='value="'.$option.'"';
685: }
686: $result.="<nobr><input type='checkbox' $value name='".
687: &html_element_name($name)."'";
688: foreach my $selected (split(/,/,$allselected)) {
689: if ( $selected eq $option ) {
690: $result.=" checked='checked' ";
691: last;
692: }
693: }
694: $result.=&element_change_detection()." />$text</nobr>\n";
695: }
696: return $result;
697: }
698:
699: sub text_arg {
700: my ($description,$name,$token,$size) = @_;
701: my $result;
702: if (!defined $size) { $size=20; }
703: my $arg=$token->[2]{$name};
704: $result=&mt($description).' <input name="'.&html_element_name($name).
705: '" type="text" value="'.$arg.'" size="'.$size.'" '.
706: &element_change_detection().'/>';
707: return '<nobr>'.$result.'</nobr>';
708: }
709:
710: sub select_arg {
711: my ($description,$name,$list,$token) = @_;
712: my $result;
713: my $optionlist="";
714: my $selected=$token->[2]{$name};
715: foreach my $option (@$list) {
716: my ($text,$value);
717: if ( ref($option) eq 'ARRAY') {
718: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
719: $text=$$option[1];
720: $option=$$option[0];
721: } else {
722: $text=$option;
723: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
724: }
725: if ( $selected eq $option ) {
726: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
727: } else {
728: $optionlist.="<option $value >$text</option>\n";
729: }
730: }
731: $result.='<nobr>'.$description.' <select name="'.
732: &html_element_name($name).'" '.&element_change_detection().' >
733: '.$optionlist.'
734: </select></nobr>';
735: return $result;
736: }
737:
738: sub select_or_text_arg {
739: my ($description,$name,$list,$token,$size) = @_;
740: my $result;
741: my $optionlist="";
742: my $found=0;
743: my $selected=$token->[2]{$name};
744: foreach my $option (@$list) {
745: my ($text,$value);
746: if ( ref($option) eq 'ARRAY') {
747: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
748: $text=$$option[1];
749: $option=$$option[0];
750: } else {
751: $text=$option;
752: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
753: }
754: if ( $selected eq $option ) {
755: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
756: $found=1;
757: } else {
758: $optionlist.="<option $value>$text</option>\n";
759: }
760: }
761: $optionlist.="<option value=\"TYPEDINVALUE\"".
762: ((!$found)?' selected="selected"':'').
763: ">".&mt('Type-in value')."</option>\n";
764: #
765: my $change_code=&element_change_detection();
766: my $element=&html_element_name($name);
767: my $selectelement='select_list_'.$element;
768: my $typeinelement='type_in_'.$element;
769: my $typeinvalue=($found?'':$selected);
770: #
771: my $hiddenvalue='this.form.'.$element.'.value';
772: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
773: my $selectedvalue='this.form.'.$selectelement.
774: '.options['.$selectedindex.'].value';
775: my $typedinvalue='this.form.'.$typeinelement.'.value';
776: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
777: $description=&mt($description);
778: #
779: return (<<ENDSELECTORTYPE);
780: <nobr>
781: $description
782: <select name="$selectelement"
783: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
784: $optionlist
785: </select>
786: <input type="text" size="$size" name="$typeinelement"
787: value="$typeinvalue"
788: onChange="$hiddenvalue=$typedinvalue;"
789: onFocus="$selectedindex=$selecttypeinindex-1;" />
790: <input type="hidden" name="$element" value="$selected" $change_code />
791: </nobr>
792: ENDSELECTORTYPE
793: }
794:
795: #----------------------------------------------------- image coordinates
796: # single image coordinates, x, y
797: sub entercoords {
798: my ($idx,$idy,$mode,$width,$height) = @_;
799: unless ($Apache::edit::bgimgsrc) { return ''; }
800: if ($idx) { $idx.='_'; }
801: if ($idy) { $idy.='_'; }
802: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
803: my $form = 'lonhomework';
804: my $element;
805: if (! defined($mode) || $mode eq 'attribute') {
806: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
807: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
808: $element = &Apache::lonnet::escape('homework_edit_'.
809: $Apache::lonxml::curdepth);
810: }
811: my $id=$Apache::lonxml::curdepth;
812: my %data=("imagechoice.$id.type" =>'point',
813: "imagechoice.$id.formname" =>$form,
814: "imagechoice.$id.formx" =>"$idx$element",
815: "imagechoice.$id.formy" =>"$idy$element",
816: "imagechoice.$id.file" =>$bgfile,
817: "imagechoice.$id.formcoord" =>$element);
818: if ($height) {
819: $data{"imagechoice.$id.formheight"}=$height.'_'.
820: $Apache::edit::bgimgsrccurdepth;
821: }
822: if ($width) {
823: $data{"imagechoice.$id.formwidth"}=$width.'_'.
824: $Apache::edit::bgimgsrccurdepth;
825: }
826: &Apache::lonnet::appenv(%data);
827: my $text="Click Coordinates";
828: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
829: return $result;
830: }
831:
832: # coordinates (x1,y1)-(x2,y2)...
833: # mode can be either box, or polygon
834: sub entercoord {
835: my ($idx,$mode,$width,$height,$type) = @_;
836: unless ($Apache::edit::bgimgsrc) { return ''; }
837: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
838: my $form = 'lonhomework';
839: my $element;
840: if (! defined($mode) || $mode eq 'attribute') {
841: $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
842: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
843: $element = &Apache::lonnet::escape('homework_edit_'.
844: $Apache::lonxml::curdepth);
845: }
846: my $id=$Apache::lonxml::curdepth;
847: my %data=("imagechoice.$id.type" =>$type,
848: "imagechoice.$id.formname" =>$form,
849: "imagechoice.$id.file" =>$bgfile,
850: "imagechoice.$id.formcoord" =>$element);
851: if ($height) {
852: $data{"imagechoice.$id.formheight"}=$height.'_'.
853: $Apache::edit::bgimgsrccurdepth;
854: }
855: if ($width) {
856: $data{"imagechoice.$id.formwidth"}=$width.'_'.
857: $Apache::edit::bgimgsrccurdepth;
858: }
859: &Apache::lonnet::appenv(%data);
860: my $text="Enter Coordinates";
861: if ($type eq 'polygon') { $text='Create Polygon Data'; }
862: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
863: return $result;
864: }
865:
866: sub deletecoorddata {
867: &Apache::lonnet::delenv("imagechoice\\.");
868: }
869:
870: #----------------------------------------------------- browse
871: sub browse {
872: # insert a link to call up the filesystem browser (lonindexer)
873: my ($id, $mode, $titleid) = @_;
874: my $form = 'lonhomework';
875: my $element;
876: if (! defined($mode) || $mode eq 'attribute') {
877: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
878: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
879: $element = &Apache::lonnet::escape('homework_edit_'.
880: $Apache::lonxml::curdepth);
881: }
882: my $titleelement;
883: if ($titleid) {
884: $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
885: }
886: my $result = <<"ENDBUTTON";
887: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
888: ENDBUTTON
889: return $result;
890: }
891:
892: #----------------------------------------------------- browse
893: sub search {
894: # insert a link to call up the filesystem browser (lonindexer)
895: my ($id, $mode, $titleid) = @_;
896: my $form = 'lonhomework';
897: my $element;
898: if (! defined($mode) || $mode eq 'attribute') {
899: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
900: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
901: $element = &Apache::lonnet::escape('homework_edit_'.
902: $Apache::lonxml::curdepth);
903: }
904: my $titleelement;
905: if ($titleid) {
906: $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
907: }
908: my $result = <<"ENDBUTTON";
909: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
910: ENDBUTTON
911: return $result;
912: }
913:
914:
915: 1;
916: __END__
917:
918: =head1 NAME
919:
920: Apache::edit - edit mode helpers
921:
922: =head1 SYNOPSIS
923:
924: Invoked by many homework and xml related modules.
925:
926: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
927:
928: =head1 INTRODUCTION
929:
930: This module outputs HTML syntax helpful for the rendering of edit
931: mode interfaces.
932:
933: This is part of the LearningOnline Network with CAPA project
934: described at http://www.lon-capa.org.
935:
936: =head1 HANDLER SUBROUTINE
937:
938: There is no handler subroutine.
939:
940: =head1 OTHER SUBROUTINES
941:
942: =over 4
943:
944: =item *
945:
946: initialize_edit() : initialize edit (set colordepth to zero)
947:
948: =item *
949:
950: tag_start($target,$token,$description) : provide deletion and insertion lists
951: for the manipulation of a start tag; return a scalar string
952:
953: =item *
954:
955: tag_end($target,$token,$description) : ending syntax corresponding to
956: &tag_start. return a scalar string.
957:
958: =item *
959:
960: start_table($token) : start table; update colordepth; return scalar string.
961:
962: =item *
963:
964: end_table() : reduce color depth; end table; return scalar string
965:
966: =item *
967:
968: start_spanning_row() : start a new table row spanning the 'edit' environment.
969:
970: =item *
971:
972: start_row() : start a new table row and element.
973:
974: =item *
975:
976: end_row() : end current table element and row.
977:
978: =item *
979:
980: movebuttons($target,$token) : move-up and move-down buttons; return scalar
981: string
982:
983: =item *
984:
985: deletelist($target,$token) : provide a yes option in an HTML select element;
986: return scalar string
987:
988: =item *
989:
990: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
991: $style) : respond to a user delete request by passing relevant stack
992: and array information to various rendering functions; return a scalar string
993:
994: =item *
995:
996: get_insert_list($token) : provide an insertion list based on possibilities
997: from lonxml; return a scalar string
998:
999: =item *
1000:
1001: insertlist($target,$token) : api that uses get_insert_list;
1002: return a scalar string
1003:
1004: =item *
1005:
1006: handleinsert($token) : provide an insertion list based on possibilities
1007: from lonxml; return a scalar string
1008:
1009: =item *
1010:
1011: get_insert_list($token) : provide an insertion list based on possibilities
1012: from lonxml; return a scalar string
1013:
1014: =item *
1015: browse($elementname) : provide a link which will open up the filesystem
1016: browser (lonindexer) and, once a file is selected, place the result in
1017: the form element $elementname.
1018:
1019: =item *
1020: search($elementname) : provide a link which will open up the filesystem
1021: searcher (lonsearchcat) and, once a file is selected, place the result in
1022: the form element $elementname.
1023:
1024: =item *
1025: editline(tag,data,description,size): Provide a <input type="text" ../> for
1026: single-line text entry. This is to be used for text enclosed by tags, not
1027: arguements/parameters associated with a tag.
1028:
1029: =back
1030:
1031: incomplete...
1032:
1033: =cut
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