1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.87 2004/09/30 21:47:21 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 align="right" valign="top">' .
72: Apache::loncommon::help_open_topic(@help) .
73: '</td>';
74: } else { $result .= "<td> </td>"; }
75: $result .= &end_row().&start_spanning_row();
76: }
77: return $result;
78: }
79:
80: sub tag_end {
81: my ($target,$token,$description) = @_;
82: my $result='';
83: if ($target eq 'edit') {
84: $result.="</td></tr>".&end_table()."\n";
85: }
86: return $result;
87: }
88:
89: sub start_table {
90: my ($token)=@_;
91: my $tag = $token->[1];
92: my $tagnum;
93: foreach my $namespace (reverse @Apache::lonxml::namespace) {
94: my $testtag=$namespace.'::'.$tag;
95: $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
96: if (defined($tagnum)) { last; }
97: }
98: if (!defined ($tagnum)) {$tagnum=$Apache::lonxml::insertlist{"$tag.num"};}
99: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
100: if (!defined($color)) {
101: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
102: }
103: $Apache::edit::colordepth++;
104: push(@Apache::edit::inserttag,$token->[1]);
105: my $result='<div align="right">';
106: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
107: return $result;
108: }
109:
110: sub end_table {
111: $Apache::edit::colordepth--;
112: my $result='</table></div>';
113: $result.="<table><tr><td>";
114:
115: my ($tagname,$closingtag);
116: if (defined($Apache::edit::inserttag[-2])) {
117: $tagname=$Apache::edit::inserttag[-2];
118: } else {$tagname='problem';}
119: if (defined($Apache::edit::inserttag[-1])) {
120: $closingtag=$Apache::edit::inserttag[-1];
121: }
122: $result.=&innerinsertlist('edit',$tagname,$closingtag).
123: "</td></tr></table>";
124: pop(@Apache::edit::inserttag);
125: return $result;
126: }
127:
128: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';}
129: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
130: sub end_row { return '</td></tr>'; }
131:
132: sub movebuttons {
133: my ($target,$token) = @_;
134: my $result='<input type="submit" name="moveup.'.
135: $Apache::lonxml::curdepth.'" value="Move Up" />';
136: $result.='<input type="submit" name="movedown.'.
137: $Apache::lonxml::curdepth.'" value="Move Down" />';
138: return $result;
139: }
140:
141: sub deletelist {
142: my ($target,$token) = @_;
143: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
144: <option></option>
145: <option>Yes</option>
146: </select>";
147: return $result;
148: }
149:
150: sub handle_delete {
151: if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
152: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
153: my $result=0;
154: if ($space) {
155: my $sub1="$space\:\:delete_$token->[1]";
156: {
157: no strict 'refs';
158: if (defined &$sub1) {
159: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
160: }
161: }
162: }
163: if (!$result) {
164: my $endtag='/'.$token->[1];
165: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
166: $$parser['-1']->get_token();
167: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
168: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
169: }
170: return 1;
171: }
172:
173: sub get_insert_list {
174: my ($tagname) = @_;
175: my $result='';
176: my @tagnums= ();
177: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
178: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
179: push (@tagnums, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
180: }
181: foreach my $namespace (@Apache::lonxml::namespace) {
182: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
183: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
184: }
185: }
186: if (@tagnums) {
187: my %options;
188: foreach my $tagnum (@tagnums) {
189: my $descrip=$Apache::lonxml::insertlist{"$tagnum.description"};
190: $options{$descrip} ="<option value=\"$tagnum\">".
191: $descrip."</option>\n";
192: }
193: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
194: if ($result) { $result='<option selected="on"></option>'.$result; }
195: }
196: return $result;
197: }
198:
199: sub insertlist {
200: my ($target,$token) = @_;
201: return &innerinsertlist($target,$token->[1]);
202: }
203:
204: sub innerinsertlist {
205: my ($target,$tagname,$closingtag) = @_;
206: my $result;
207: my $after='';
208: if ($closingtag) {
209: $after='_after_'.$closingtag;
210: }
211: if ($target eq 'edit') {
212: my $optionlist= &get_insert_list($tagname);
213: if ($optionlist) {
214: $result = "Insert:
215: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
216: $optionlist
217: </select>"
218: } else {
219: $result=" ";
220: }
221: }
222: return $result;
223: }
224:
225: sub handle_insert {
226: if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
227: my $result;
228: my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
229: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
230: if ($func eq 'default') {
231: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
232: my $namespace;
233: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
234: $result.="\n<$newtag>\n</$newtag>";
235: } else {
236: if (defined(&$func)) {
237: {
238: no strict 'refs';
239: $result.=&$func();
240: }
241: } else {
242: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
243: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
244: }
245: }
246: return $result;
247: }
248:
249: sub handle_insertafter {
250: my $tagname=shift;
251: if ($ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '')
252: { return ''; }
253: my $result;
254: my $tagnum =$ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
255: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
256: if ($func eq 'default') {
257: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
258: my $namespace;
259: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
260: $result.="\n<$newtag>\n</$newtag>";
261: } else {
262: if (defined(&$func)) {
263: {
264: no strict 'refs';
265: $result.=&$func();
266: }
267: } else {
268: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
269: &Apache::lonxml::error("Unable to insert (after) tag $newtag, $func was not defined. ($tagname $tagnum)");
270: }
271: }
272: return $result;
273: }
274:
275: sub insert_img {
276: return '
277: <img />';
278: }
279:
280: sub insert_responseparam {
281: return '
282: <responseparam />';
283: }
284:
285: sub insert_parameter {
286: return '
287: <parameter />';
288: }
289:
290: sub insert_formularesponse {
291: return '
292: <formularesponse answer="" samples="">
293: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
294: <textline size="25"/>
295: <hintgroup>
296: <startouttext /><endouttext />
297: </hintgroup>
298: </formularesponse>';
299: }
300:
301: sub insert_numericalresponse {
302: return '
303: <numericalresponse answer="">
304: <textline />
305: <hintgroup>
306: <startouttext /><endouttext />
307: </hintgroup>
308: </numericalresponse>';
309: }
310:
311: sub insert_stringresponse {
312: return '
313: <stringresponse answer="" type="">
314: <textline />
315: <hintgroup>
316: <startouttext /><endouttext />
317: </hintgroup>
318: </stringresponse>';
319: }
320:
321: sub insert_essayresponse {
322: return '
323: <essayresponse>
324: <textfield></textfield>
325: </essayresponse>';
326: }
327:
328: sub insert_imageresponse {
329: return '
330: <imageresponse max="1">
331: <foilgroup>
332: </foilgroup>
333: <hintgroup>
334: <startouttext /><endouttext />
335: </hintgroup>
336: </imageresponse>';
337: }
338:
339: sub insert_optionresponse {
340: return '
341: <optionresponse max="10">
342: <foilgroup options="">
343: </foilgroup>
344: <hintgroup>
345: <startouttext /><endouttext />
346: </hintgroup>
347: </optionresponse>';
348: }
349:
350: sub insert_organicresponse {
351: return '
352: <organicresponse>
353: <textline />
354: <hintgroup>
355: <startouttext /><endouttext />
356: </hintgroup>
357: </organicresponse>';
358: }
359:
360: sub insert_organicstructure {
361: return '
362: <organicstructure />
363: ';
364: }
365:
366: sub insert_radiobuttonresponse {
367: return '
368: <radiobuttonresponse max="10">
369: <foilgroup>
370: </foilgroup>
371: <hintgroup>
372: <startouttext /><endouttext />
373: </hintgroup>
374: </radiobuttonresponse>';
375: }
376:
377: sub insert_reactionresponse {
378: return '
379: <reactionresponse>
380: <textline />
381: <hintgroup>
382: <startouttext /><endouttext />
383: </hintgroup>
384: </reactionresponse>';
385: }
386:
387: sub insert_rankresponse {
388: return '
389: <rankresponse max="10">
390: <foilgroup options="">
391: </foilgroup>
392: <hintgroup>
393: <startouttext /><endouttext />
394: </hintgroup>
395: </rankresponse>';
396: }
397:
398: sub insert_matchresponse {
399: return '
400: <matchresponse max="10">
401: <foilgroup options="">
402: <itemgroup>
403: </itemgroup>
404: </foilgroup>
405: <hintgroup>
406: <startouttext /><endouttext />
407: </hintgroup>
408: </matchresponse>';
409: }
410:
411: sub insert_displayduedate { return '<displayduedate />'; }
412: sub insert_displaytitle { return '<displaytitle />'; }
413: sub insert_hintpart {
414: return '
415: <hintpart on="default">
416: <startouttext/>
417: <endouttext />
418: </hintpart>';
419: }
420:
421: sub insert_hintgroup {
422: return '
423: <hintgroup>
424: <startouttext /><endouttext />
425: </hintgroup>';
426: }
427:
428: sub insert_numericalhint {
429: return '
430: <numericalhint>
431: </numericalhint>';
432: }
433:
434: sub insert_stringhint {
435: return '
436: <stringhint>
437: </stringhint>';
438: }
439:
440: sub insert_formulahint {
441: return '
442: <formulahint>
443: </formulahint>';
444: }
445:
446: sub insert_radiobuttonhint {
447: return '
448: <radiobuttonhint>
449: </radiobuttonhint>';
450: }
451:
452: sub insert_optionhint {
453: return '
454: <optionhint>
455: </optionhint>';
456: }
457:
458: sub insert_startouttext {
459: return "<startouttext /><endouttext />";
460: }
461:
462: sub insert_script {
463: return "\n<script type=\"loncapa/perl\"></script>";
464: }
465:
466: sub textarea_sizes {
467: my ($data)=@_;
468: my $count=0;
469: my $maxlength=-1;
470: foreach (split ("\n", $$data)) {
471: $count+=int(length($_)/79);
472: $count++;
473: if (length($_) > $maxlength) { $maxlength = length($_); }
474: }
475: my $rows = $count;
476: my $cols = $maxlength;
477: return ($rows,$cols);
478: }
479:
480: sub editline {
481: my ($tag,$data,$description,$size)=@_;
482: $data=&HTML::Entities::encode($data,'<>&"');
483: if ($description) { $description="<br />".$description."<br />"; }
484: my $result = <<"END";
485: $description
486: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
487: value="$data" size="$size" />
488: END
489: return $result;
490: }
491:
492: sub editfield {
493: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
494:
495: my ($rows,$cols)=&textarea_sizes(\$data);
496: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
497: !&Apache::lonhtmlcommon::htmlareablocked()) {
498: $rows+=7; # make room for HTMLarea
499: $minheight+=7; # make room for HTMLarea
500: }
501: if ($cols > 80) { $cols = 80; }
502: if ($cols < $minwidth ) { $cols = $minwidth; }
503: if ($rows < $minheight) { $rows = $minheight; }
504: if ($description) { $description="<br />".$description."<br />"; }
505: if ($usehtmlarea) {
506: push @Apache::lonxml::htmlareafields,'homework_edit_'.
507: $Apache::lonxml::curdepth;
508: }
509: return $description."\n".' <textarea rows="'.$rows.
510: '" cols="'.$cols.'" name="homework_edit_'.
511: $Apache::lonxml::curdepth.'" id="homework_edit_'.
512: $Apache::lonxml::curdepth.'">'.
513: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
514: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
515: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
516: }
517:
518: sub modifiedfield {
519: my ($endtag,$parser) = @_;
520: my $result;
521: # foreach my $envkey (sort keys %ENV) {
522: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
523: # }
524: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
525: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
526: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
527: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
528: # textareas throw away intial \n
529: if ($bodytext=~/^\n/) { $result="\n".$result; }
530: return $result;
531: }
532:
533: # Returns a 1 if the token has been modified and you should rebuild the tag
534: # side-effects, will modify the $token if new values are found
535: sub get_new_args {
536: my ($token,$parstack,$safeeval,@args)=@_;
537: my $rebuild=0;
538: foreach my $arg (@args) {
539: #just want the string that it was set to
540: my $value=$token->[2]->{$arg};
541: my $element=&html_element_name($arg);
542: my $newvalue=$ENV{"form.$element"};
543: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
544: if (defined($newvalue) && $value ne $newvalue) {
545: if (ref($newvalue) eq 'ARRAY') {
546: $token->[2]->{$arg}=join(',',@$newvalue);
547: } else {
548: $token->[2]->{$arg}=$newvalue;
549: }
550: $rebuild=1;
551: } elsif (!defined($newvalue) && defined($value)) {
552: delete($token->[2]->{$arg});
553: $rebuild=1;
554: }
555: }
556: return $rebuild;
557: }
558:
559: # looks for /> on start tags
560: sub rebuild_tag {
561: my ($token) = @_;
562: my $result;
563: if ($token->[0] eq 'S') {
564: $result = '<'.$token->[1];
565: while (my ($key,$val)= each(%{$token->[2]})) {
566: $val=~s:^\s+|\s+$::g;
567: $val=~s:"::g; #"
568: &Apache::lonxml::debug("setting :$key: to :$val:");
569: $result.=' '.$key.'="'.$val.'"';
570: }
571: if ($token->[4] =~ m:/>$:) {
572: $result.=' />';
573: } else {
574: $result.='>';
575: }
576: } elsif ( $token->[0] eq 'E' ) {
577: $result = '</'.$token->[1].'>';
578: }
579: return $result;
580: }
581:
582: sub html_element_name {
583: my ($name) = @_;
584: return $name.'_'.$Apache::lonxml::curdepth;
585: }
586:
587: sub hidden_arg {
588: my ($name,$token) = @_;
589: my $result;
590: my $arg=$token->[2]{$name};
591: $result='<input name="'.&html_element_name($name).
592: '" type="hidden" value="'.$arg.'" />';
593: return $result;
594: }
595:
596: sub checked_arg {
597: my ($description,$name,$list,$token) = @_;
598: my $result;
599: my $optionlist="";
600: my $allselected=$token->[2]{$name};
601: $result=&mt($description);
602: foreach my $option (@$list) {
603: my ($value,$text);
604: if ( ref($option) eq 'ARRAY') {
605: $value='value="'.$$option[0].'"';
606: $text=$$option[1];
607: $option=$$option[0];
608: } else {
609: $text=$option;
610: $value='value="'.$option.'"';
611: }
612: $result.="<nobr><input type='checkbox' $value name='".
613: &html_element_name($name)."'";
614: foreach my $selected (split(/,/,$allselected)) {
615: if ( $selected eq $option ) {
616: $result.=" checked='on' ";
617: last;
618: }
619: }
620: $result.=" />$text</nobr>\n";
621: }
622: return $result;
623: }
624:
625: sub text_arg {
626: my ($description,$name,$token,$size) = @_;
627: my $result;
628: if (!defined $size) { $size=20; }
629: my $arg=$token->[2]{$name};
630: $result=&mt($description).' <input name="'.&html_element_name($name).
631: '" type="text" value="'.$arg.'" size="'.$size.'" />';
632: return '<nobr>'.$result.'</nobr>';
633: }
634:
635: sub select_arg {
636: my ($description,$name,$list,$token) = @_;
637: my $result;
638: my $optionlist="";
639: my $selected=$token->[2]{$name};
640: foreach my $option (@$list) {
641: my ($text,$value);
642: if ( ref($option) eq 'ARRAY') {
643: $value='value="'.$$option[0].'"';
644: $text=$$option[1];
645: $option=$$option[0];
646: } else {
647: $text=$option;
648: $value='value="'.$option.'"';
649: }
650: if ( $selected eq $option ) {
651: $optionlist.="<option $value selected=\"on\">$text</option>\n";
652: } else {
653: $optionlist.="<option $value >$text</option>\n";
654: }
655: }
656: $result.='<nobr>'.$description.' <select name="'.
657: &html_element_name($name).'">
658: '.$optionlist.'
659: </select></nobr>';
660: return $result;
661: }
662:
663: sub select_or_text_arg {
664: my ($description,$name,$list,$token,$size) = @_;
665: my $result;
666: my $optionlist="";
667: my $found=0;
668: my $selected=$token->[2]{$name};
669: foreach my $option (@$list) {
670: my ($text,$value);
671: if ( ref($option) eq 'ARRAY') {
672: $value='value="'.$$option[0].'"';
673: $text=$$option[1];
674: $option=$$option[0];
675: } else {
676: $text=$option;
677: $value='value="'.$option.'"';
678: }
679: if ( $selected eq $option ) {
680: $optionlist.="<option $value selected=\"on\">$text</option>\n";
681: $found=1;
682: } else {
683: $optionlist.="<option $value>$text</option>\n";
684: }
685: }
686: $optionlist.="<option value=\"TYPEDINVALUE\"".
687: ((!$found)?' selected="on"':'').
688: ">".&mt('Type-in value')."</option>\n";
689: #
690: my $element=&html_element_name($name);
691: my $selectelement='select_list_'.$element;
692: my $typeinelement='type_in_'.$element;
693: my $typeinvalue=($found?'':$selected);
694: #
695: my $hiddenvalue='this.form.'.$element.'.value';
696: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
697: my $selectedvalue='this.form.'.$selectelement.
698: '.options['.$selectedindex.'].value';
699: my $typedinvalue='this.form.'.$typeinelement.'.value';
700: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
701: $description=&mt($description);
702: #
703: return (<<ENDSELECTORTYPE);
704: <nobr>
705: $description
706: <select name="$selectelement"
707: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
708: $optionlist
709: </select>
710: <input type="text" size="$size" name="$typeinelement"
711: value="$typeinvalue"
712: onChange="$hiddenvalue=$typedinvalue;"
713: onFocus="$selectedindex=$selecttypeinindex-1;" />
714: <input type="hidden" name="$element" value="$selected" />
715: </nobr>
716: ENDSELECTORTYPE
717: }
718:
719: #----------------------------------------------------- image coordinates
720: # single image coordinates, x, y
721: sub entercoords {
722: my ($idx,$idy,$mode,$width,$height) = @_;
723: unless ($Apache::edit::bgimgsrc) { return ''; }
724: if ($idx) { $idx.='_'; }
725: if ($idy) { $idy.='_'; }
726: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
727: my $form = 'lonhomework';
728: my $element;
729: if (! defined($mode) || $mode eq 'attribute') {
730: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
731: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
732: $element = &Apache::lonnet::escape('homework_edit_'.
733: $Apache::lonxml::curdepth);
734: }
735: my $id=$Apache::lonxml::curdepth;
736: my %data=("imagechoice.$id.type" =>'point',
737: "imagechoice.$id.formname" =>$form,
738: "imagechoice.$id.formx" =>"$idx$element",
739: "imagechoice.$id.formy" =>"$idy$element",
740: "imagechoice.$id.file" =>$bgfile,
741: "imagechoice.$id.formcoord" =>$element);
742: if ($height) {
743: $data{"imagechoice.$id.formheight"}=$height.'_'.
744: $Apache::edit::bgimgsrccurdepth;
745: }
746: if ($width) {
747: $data{"imagechoice.$id.formwidth"}=$width.'_'.
748: $Apache::edit::bgimgsrccurdepth;
749: }
750: &Apache::lonnet::appenv(%data);
751: my $text="Click Coordinates";
752: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
753: return $result;
754: }
755:
756: # coordinates (x1,y1)-(x2,y2)...
757: # mode can be either box, or polygon
758: sub entercoord {
759: my ($idx,$mode,$width,$height,$type) = @_;
760: unless ($Apache::edit::bgimgsrc) { return ''; }
761: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
762: my $form = 'lonhomework';
763: my $element;
764: if (! defined($mode) || $mode eq 'attribute') {
765: $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
766: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
767: $element = &Apache::lonnet::escape('homework_edit_'.
768: $Apache::lonxml::curdepth);
769: }
770: my $id=$Apache::lonxml::curdepth;
771: my %data=("imagechoice.$id.type" =>$type,
772: "imagechoice.$id.formname" =>$form,
773: "imagechoice.$id.file" =>$bgfile,
774: "imagechoice.$id.formcoord" =>$element);
775: if ($height) {
776: $data{"imagechoice.$id.formheight"}=$height.'_'.
777: $Apache::edit::bgimgsrccurdepth;
778: }
779: if ($width) {
780: $data{"imagechoice.$id.formwidth"}=$width.'_'.
781: $Apache::edit::bgimgsrccurdepth;
782: }
783: &Apache::lonnet::appenv(%data);
784: my $text="Enter Coordinates";
785: if ($type eq 'polygon') { $text='Create Polygon Data'; }
786: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
787: return $result;
788: }
789:
790: sub deletecoorddata {
791: &Apache::lonnet::delenv("imagechoice\\.");
792: }
793:
794: #----------------------------------------------------- browse
795: sub browse {
796: # insert a link to call up the filesystem browser (lonindexer)
797: my ($id, $mode, $titleid) = @_;
798: my $form = 'lonhomework';
799: my $element;
800: if (! defined($mode) || $mode eq 'attribute') {
801: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
802: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
803: $element = &Apache::lonnet::escape('homework_edit_'.
804: $Apache::lonxml::curdepth);
805: }
806: my $titleelement;
807: if ($titleid) {
808: $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
809: }
810: my $result = <<"ENDBUTTON";
811: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
812: ENDBUTTON
813: return $result;
814: }
815:
816: #----------------------------------------------------- browse
817: sub search {
818: # insert a link to call up the filesystem browser (lonindexer)
819: my ($id, $mode, $titleid) = @_;
820: my $form = 'lonhomework';
821: my $element;
822: if (! defined($mode) || $mode eq 'attribute') {
823: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
824: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
825: $element = &Apache::lonnet::escape('homework_edit_'.
826: $Apache::lonxml::curdepth);
827: }
828: my $titleelement;
829: if ($titleid) {
830: $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
831: }
832: my $result = <<"ENDBUTTON";
833: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
834: ENDBUTTON
835: return $result;
836: }
837:
838:
839: 1;
840: __END__
841:
842: =head1 NAME
843:
844: Apache::edit - edit mode helpers
845:
846: =head1 SYNOPSIS
847:
848: Invoked by many homework and xml related modules.
849:
850: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
851:
852: =head1 INTRODUCTION
853:
854: This module outputs HTML syntax helpful for the rendering of edit
855: mode interfaces.
856:
857: This is part of the LearningOnline Network with CAPA project
858: described at http://www.lon-capa.org.
859:
860: =head1 HANDLER SUBROUTINE
861:
862: There is no handler subroutine.
863:
864: =head1 OTHER SUBROUTINES
865:
866: =over 4
867:
868: =item *
869:
870: initialize_edit() : initialize edit (set colordepth to zero)
871:
872: =item *
873:
874: tag_start($target,$token,$description) : provide deletion and insertion lists
875: for the manipulation of a start tag; return a scalar string
876:
877: =item *
878:
879: tag_end($target,$token,$description) : ending syntax corresponding to
880: &tag_start. return a scalar string.
881:
882: =item *
883:
884: start_table($token) : start table; update colordepth; return scalar string.
885:
886: =item *
887:
888: end_table() : reduce color depth; end table; return scalar string
889:
890: =item *
891:
892: start_spanning_row() : start a new table row spanning the 'edit' environment.
893:
894: =item *
895:
896: start_row() : start a new table row and element.
897:
898: =item *
899:
900: end_row() : end current table element and row.
901:
902: =item *
903:
904: movebuttons($target,$token) : move-up and move-down buttons; return scalar
905: string
906:
907: =item *
908:
909: deletelist($target,$token) : provide a yes option in an HTML select element;
910: return scalar string
911:
912: =item *
913:
914: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
915: $style) : respond to a user delete request by passing relevant stack
916: and array information to various rendering functions; return a scalar string
917:
918: =item *
919:
920: get_insert_list($token) : provide an insertion list based on possibilities
921: from lonxml; return a scalar string
922:
923: =item *
924:
925: insertlist($target,$token) : api that uses get_insert_list;
926: return a scalar string
927:
928: =item *
929:
930: handleinsert($token) : provide an insertion list based on possibilities
931: from lonxml; return a scalar string
932:
933: =item *
934:
935: get_insert_list($token) : provide an insertion list based on possibilities
936: from lonxml; return a scalar string
937:
938: =item *
939: browse($elementname) : provide a link which will open up the filesystem
940: browser (lonindexer) and, once a file is selected, place the result in
941: the form element $elementname.
942:
943: =item *
944: search($elementname) : provide a link which will open up the filesystem
945: searcher (lonsearchcat) and, once a file is selected, place the result in
946: the form element $elementname.
947:
948: =item *
949: editline(tag,data,description,size): Provide a <input type="text" ../> for
950: single-line text entry. This is to be used for text enclosed by tags, not
951: arguements/parameters associated with a tag.
952:
953: =back
954:
955: incomplete...
956:
957: =cut
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