1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.78 2004/01/15 03:24:52 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # 3/20 Guy
29: # 01/10/02 Matthew
30: # 03/06/02 Matthew
31: package Apache::edit;
32:
33: use strict;
34: use Apache::lonnet();
35: use HTML::Entities();
36: use Apache::lonlocal;
37:
38: # Global Vars
39: # default list of colors to use in editing
40: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
41: # depth of nesting of edit
42: $Apache::edit::colordepth=0;
43: @Apache::edit::inserttag=();
44: # image-type responses: active background image and curdepth at definition
45: $Apache::edit::bgimgsrc='';
46: $Apache::edit::bgimgsrccurdepth='';
47:
48: sub initialize_edit {
49: $Apache::edit::colordepth=0;
50: @Apache::edit::inserttag=();
51: }
52:
53: sub tag_start {
54: my ($target,$token,$description) = @_;
55: my $result='';
56: if ($target eq "edit") {
57: my $tag=$token->[1];
58: if (!$description) {
59: $description=&Apache::lonxml::description($token);
60: if (!$description) { $description="<$tag>"; }
61: }
62: $result.= &start_table($token)."<tr><td>$description</td>
63: <td>Delete".
64: &deletelist($target,$token)
65: ."</td>
66: <td>".
67: &insertlist($target,$token);
68: #<td>".
69: # &movebuttons($target,$token).
70: # "</tr><tr><td colspan=\"3\">\n";
71: my @help = Apache::lonxml::helpinfo($token);
72: if ($help[0]) {
73: $result .= '<td align="right" valign="top">' .
74: Apache::loncommon::help_open_topic(@help) .
75: '</td>';
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 = $token->[1];
94: my $tagnum;
95: foreach my $namespace (reverse @Apache::lonxml::namespace) {
96: my $testtag=$namespace.'::'.$tag;
97: $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
98: if (defined($tagnum)) { last; }
99: }
100: if (!defined ($tagnum)) {$tagnum=$Apache::lonxml::insertlist{"$tag.num"};}
101: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
102: if (!defined($color)) {
103: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
104: }
105: $Apache::edit::colordepth++;
106: push(@Apache::edit::inserttag,$token->[1]);
107: my $result='<div align="right">';
108: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
109: return $result;
110: }
111:
112: sub end_table {
113: $Apache::edit::colordepth--;
114: my $result='</table></div>';
115: $result.="<table><tr><td>";
116:
117: my ($tagname,$closingtag);
118: if (defined($Apache::edit::inserttag[-2])) {
119: $tagname=$Apache::edit::inserttag[-2];
120: } else {$tagname='problem';}
121: if (defined($Apache::edit::inserttag[-1])) {
122: $closingtag=$Apache::edit::inserttag[-1];
123: }
124: $result.=&innerinsertlist('edit',$tagname,$closingtag).
125: "</td></tr></table>";
126: pop(@Apache::edit::inserttag);
127: return $result;
128: }
129:
130: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';}
131: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
132: sub end_row { return '</td></tr>'; }
133:
134: sub movebuttons {
135: my ($target,$token) = @_;
136: my $result='<input type="submit" name="moveup.'.
137: $Apache::lonxml::curdepth.'" value="Move Up" />';
138: $result.='<input type="submit" name="movedown.'.
139: $Apache::lonxml::curdepth.'" value="Move Down" />';
140: return $result;
141: }
142:
143: sub deletelist {
144: my ($target,$token) = @_;
145: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
146: <option></option>
147: <option>Yes</option>
148: </select>";
149: return $result;
150: }
151:
152: sub handle_delete {
153: if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
154: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
155: my $result=0;
156: if ($space) {
157: my $sub1="$space\:\:delete_$token->[1]";
158: {
159: no strict 'refs';
160: if (defined &$sub1) {
161: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
162: }
163: }
164: }
165: if (!$result) {
166: my $endtag='/'.$token->[1];
167: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
168: $$parser['-1']->get_token();
169: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
170: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
171: }
172: return 1;
173: }
174:
175: sub get_insert_list {
176: my ($tagname) = @_;
177: my $result='';
178: my @tagnums= ();
179: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
180: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
181: push (@tagnums, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
182: }
183: foreach my $namespace (@Apache::lonxml::namespace) {
184: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
185: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
186: }
187: }
188: if (@tagnums) {
189: my %options;
190: foreach my $tagnum (@tagnums) {
191: my $descrip=$Apache::lonxml::insertlist{"$tagnum.description"};
192: $options{$descrip} ="<option value=\"$tagnum\">".
193: $descrip."</option>\n";
194: }
195: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
196: if ($result) { $result='<option selected="on"></option>'.$result; }
197: }
198: return $result;
199: }
200:
201: sub insertlist {
202: my ($target,$token) = @_;
203: return &innerinsertlist($target,$token->[1]);
204: }
205:
206: sub innerinsertlist {
207: my ($target,$tagname,$closingtag) = @_;
208: my $result;
209: my $after='';
210: if ($closingtag) {
211: $after='_after_'.$closingtag;
212: }
213: if ($target eq 'edit') {
214: my $optionlist= &get_insert_list($tagname);
215: if ($optionlist) {
216: $result = "Insert:
217: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
218: $optionlist
219: </select>"
220: } else {
221: $result=" ";
222: }
223: }
224: return $result;
225: }
226:
227: sub handle_insert {
228: if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
229: my $result;
230: my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
231: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
232: if ($func eq 'default') {
233: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
234: my $namespace;
235: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
236: $result.="\n<$newtag>\n</$newtag>";
237: } else {
238: if (defined(&$func)) {
239: {
240: no strict 'refs';
241: $result.=&$func();
242: }
243: } else {
244: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
245: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
246: }
247: }
248: return $result;
249: }
250:
251: sub handle_insertafter {
252: my $tagname=shift;
253: if ($ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '')
254: { return ''; }
255: my $result;
256: my $tagnum =$ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
257: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
258: if ($func eq 'default') {
259: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
260: my $namespace;
261: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
262: $result.="\n<$newtag>\n</$newtag>";
263: } else {
264: if (defined(&$func)) {
265: {
266: no strict 'refs';
267: $result.=&$func();
268: }
269: } else {
270: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
271: &Apache::lonxml::error("Unable to insert (after) tag $newtag, $func was not defined. ($tagname $tagnum)");
272: }
273: }
274: return $result;
275: }
276:
277: sub insert_img {
278: return '
279: <img />';
280: }
281:
282: sub insert_responseparam {
283: return '
284: <responseparam />';
285: }
286:
287: sub insert_formularesponse {
288: return '
289: <formularesponse answer="" samples="">
290: <textline />
291: <hintgroup>
292: <startouttext /><endouttext />
293: </hintgroup>
294: </formularesponse>';
295: }
296:
297: sub insert_numericalresponse {
298: return '
299: <numericalresponse answer="">
300: <textline />
301: <hintgroup>
302: <startouttext /><endouttext />
303: </hintgroup>
304: </numericalresponse>';
305: }
306:
307: sub insert_stringresponse {
308: return '
309: <stringresponse answer="" type="">
310: <textline />
311: <hintgroup>
312: <startouttext /><endouttext />
313: </hintgroup>
314: </stringresponse>';
315: }
316:
317: sub insert_essayresponse {
318: return '
319: <essayresponse>
320: <textfield></textfield>
321: </essayresponse>';
322: }
323:
324: sub insert_imageresponse {
325: return '
326: <imageresponse max="1">
327: <foilgroup>
328: </foilgroup>
329: <hintgroup>
330: <startouttext /><endouttext />
331: </hintgroup>
332: </imageresponse>';
333: }
334:
335: sub insert_optionresponse {
336: return '
337: <optionresponse max="10">
338: <foilgroup options="">
339: </foilgroup>
340: <hintgroup>
341: <startouttext /><endouttext />
342: </hintgroup>
343: </optionresponse>';
344: }
345:
346: sub insert_organicresponse {
347: return '
348: <organicresponse>
349: <textline />
350: <hintgroup>
351: <startouttext /><endouttext />
352: </hintgroup>
353: </organicresponse>';
354: }
355:
356: sub insert_organicstructure {
357: return '
358: <organicstructure />
359: ';
360: }
361:
362: sub insert_radiobuttonresponse {
363: return '
364: <radiobuttonresponse max="10">
365: <foilgroup>
366: </foilgroup>
367: <hintgroup>
368: <startouttext /><endouttext />
369: </hintgroup>
370: </radiobuttonresponse>';
371: }
372:
373: sub insert_reactionresponse {
374: return '
375: <reactionresponse>
376: <textline />
377: <hintgroup>
378: <startouttext /><endouttext />
379: </hintgroup>
380: </reactionresponse>';
381: }
382:
383: sub insert_rankresponse {
384: return '
385: <rankresponse max="10">
386: <foilgroup options="">
387: </foilgroup>
388: <hintgroup>
389: <startouttext /><endouttext />
390: </hintgroup>
391: </rankresponse>';
392: }
393:
394: sub insert_matchresponse {
395: return '
396: <matchresponse max="10">
397: <foilgroup options="">
398: <itemgroup>
399: </itemgroup>
400: </foilgroup>
401: <hintgroup>
402: <startouttext /><endouttext />
403: </hintgroup>
404: </matchresponse>';
405: }
406:
407: sub insert_displayduedate { return '<displayduedate />'; }
408: sub insert_displaytitle { return '<displaytitle />'; }
409: sub insert_hintpart {
410: return '
411: <hintpart on="default">
412: <startouttext/>
413: <endouttext />
414: </hintpart>';
415: }
416:
417: sub insert_hintgroup {
418: return '
419: <hintgroup>
420: <startouttext /><endouttext />
421: </hintgroup>';
422: }
423:
424: sub insert_numericalhint {
425: return '
426: <numericalhint>
427: </numericalhint>';
428: }
429:
430: sub insert_stringhint {
431: return '
432: <stringhint>
433: </stringhint>';
434: }
435:
436: sub insert_formulahint {
437: return '
438: <formulahint>
439: </formulahint>';
440: }
441:
442: sub insert_radiobuttonhint {
443: return '
444: <radiobuttonhint>
445: </radiobuttonhint>';
446: }
447:
448: sub insert_optionhint {
449: return '
450: <optionhint>
451: </optionhint>';
452: }
453:
454: sub insert_startouttext {
455: return "<startouttext /><endouttext />";
456: }
457:
458: sub insert_script {
459: return "\n<script type=\"loncapa/perl\"></script>";
460: }
461:
462: sub textarea_sizes {
463: my ($data)=@_;
464: my $count=0;
465: my $maxlength=-1;
466: foreach (split ("\n", $$data)) {
467: $count+=int(length($_)/79);
468: $count++;
469: if (length($_) > $maxlength) { $maxlength = length($_); }
470: }
471: my $rows = $count;
472: my $cols = $maxlength;
473: return ($rows,$cols);
474: }
475:
476: sub editline {
477: my ($tag,$data,$description,$size)=@_;
478: $data=&HTML::Entities::encode($data);
479: if ($description) { $description="<br />".$description."<br />"; }
480: my $result = <<"END";
481: $description
482: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
483: value="$data" size="$size" />
484: END
485: return $result;
486: }
487:
488: sub editfield {
489: my ($tag,$data,$description,$minwidth,$minheight)=@_;
490:
491: my ($rows,$cols)=&textarea_sizes(\$data);
492: if ($cols > 80) { $cols = 80; }
493: if ($cols < $minwidth ) { $cols = $minwidth; }
494: if ($rows < $minheight) { $rows = $minheight; }
495: if ($description) { $description="<br />".$description."<br />"; }
496: return $description."\n".' <textarea rows="'.$rows.
497: '" cols="'.$cols.'" name="homework_edit_'.
498: $Apache::lonxml::curdepth.'">'.
499: &HTML::Entities::encode($data).'</textarea>'."\n";
500: }
501:
502: sub modifiedfield {
503: my ($endtag,$parser) = @_;
504: my $result;
505: # foreach my $envkey (sort keys %ENV) {
506: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
507: # }
508: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
509: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
510: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
511: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
512: # textareas throw away intial \n
513: if ($bodytext=~/^\n/) { $result="\n".$result; }
514: return $result;
515: }
516:
517: # Returns a 1 if the token has been modified and you should rebuild the tag
518: # side-effects, will modify the $token if new values are found
519: sub get_new_args {
520: my ($token,$parstack,$safeeval,@args)=@_;
521: my $rebuild=0;
522: foreach my $arg (@args) {
523: #just want the string that it was set to
524: my $value=$token->[2]->{$arg};
525: my $element=&html_element_name($arg);
526: my $newvalue=$ENV{"form.$element"};
527: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
528: if (defined($newvalue) && $value ne $newvalue) {
529: if (ref($newvalue) eq 'ARRAY') {
530: $token->[2]->{$arg}=join(',',@$newvalue);
531: } else {
532: $token->[2]->{$arg}=$newvalue;
533: }
534: $rebuild=1;
535: }
536: }
537: return $rebuild;
538: }
539:
540: # looks for /> on start tags
541: sub rebuild_tag {
542: my ($token) = @_;
543: my $result;
544: if ($token->[0] eq 'S') {
545: $result = '<'.$token->[1];
546: while (my ($key,$val)= each(%{$token->[2]})) {
547: $val=~s:^\s+|\s+$::g;
548: $val=~s:"::g; #"
549: &Apache::lonxml::debug("setting :$key: to :$val:");
550: $result.=' '.$key.'="'.$val.'"';
551: }
552: if ($token->[4] =~ m:/>$:) {
553: $result.=' />';
554: } else {
555: $result.='>';
556: }
557: } elsif ( $token->[0] eq 'E' ) {
558: $result = '</'.$token->[1].'>';
559: }
560: return $result;
561: }
562:
563: sub html_element_name {
564: my ($name) = @_;
565: return $name.'_'.$Apache::lonxml::curdepth;
566: }
567:
568: sub hidden_arg {
569: my ($name,$token) = @_;
570: my $result;
571: my $arg=$token->[2]{$name};
572: $result='<input name="'.&html_element_name($name).
573: '" type="hidden" value="'.$arg.'" />';
574: return $result;
575: }
576:
577: sub checked_arg {
578: my ($description,$name,$list,$token) = @_;
579: my $result;
580: my $optionlist="";
581: my $allselected=$token->[2]{$name};
582: $result=&mt($description);
583: foreach my $option (@$list) {
584: my ($value,$text);
585: if ( ref($option) eq 'ARRAY') {
586: $value='value="'.$$option[0].'"';
587: $text=$$option[1];
588: $option=$$option[0];
589: } else {
590: $text=$option;
591: $value='value="'.$option.'"';
592: }
593: $result.="<nobr><input type='checkbox' $value name='".
594: &html_element_name($name)."'";
595: foreach my $selected (split(/,/,$allselected)) {
596: if ( $selected eq $option ) {
597: $result.=" checked='on' ";
598: last;
599: }
600: }
601: $result.=" />$text</nobr>\n";
602: }
603: return $result;
604: }
605:
606: sub text_arg {
607: my ($description,$name,$token,$size) = @_;
608: my $result;
609: if (!defined $size) { $size=20; }
610: my $arg=$token->[2]{$name};
611: $result=&mt($description).' <input name="'.&html_element_name($name).
612: '" type="text" value="'.$arg.'" size="'.$size.'" />';
613: return '<nobr>'.$result.'</nobr>';
614: }
615:
616: sub select_arg {
617: my ($description,$name,$list,$token) = @_;
618: my $result;
619: my $optionlist="";
620: my $selected=$token->[2]{$name};
621: foreach my $option (@$list) {
622: my ($text,$value);
623: if ( ref($option) eq 'ARRAY') {
624: $value='value="'.$$option[0].'"';
625: $text=$$option[1];
626: $option=$$option[0];
627: } else {
628: $text=$option;
629: $value='value="'.$option.'"';
630: }
631: if ( $selected eq $option ) {
632: $optionlist.="<option $value selected=\"on\">$text</option>\n";
633: } else {
634: $optionlist.="<option $value >$text</option>\n";
635: }
636: }
637: $result.='<nobr>'.$description.' <select name="'.
638: &html_element_name($name).'">
639: '.$optionlist.'
640: </select></nobr>';
641: return $result;
642: }
643:
644: sub select_or_text_arg {
645: my ($description,$name,$list,$token,$size) = @_;
646: my $result;
647: my $optionlist="";
648: my $found=0;
649: my $selected=$token->[2]{$name};
650: foreach my $option (@$list) {
651: my ($text,$value);
652: if ( ref($option) eq 'ARRAY') {
653: $value='value="'.$$option[0].'"';
654: $text=$$option[1];
655: $option=$$option[0];
656: } else {
657: $text=$option;
658: $value='value="'.$option.'"';
659: }
660: if ( $selected eq $option ) {
661: $optionlist.="<option $value selected=\"on\">$text</option>\n";
662: $found=1;
663: } else {
664: $optionlist.="<option $value>$text</option>\n";
665: }
666: }
667: $optionlist.="<option value=\"TYPEDINVALUE\"".
668: ((!$found)?' selected="on"':'').
669: ">".&mt('Type-in value')."</option>\n";
670: #
671: my $element=&html_element_name($name);
672: my $selectelement='select_list_'.$element;
673: my $typeinelement='type_in_'.$element;
674: my $typeinvalue=($found?'':$selected);
675: #
676: my $hiddenvalue='this.form.'.$element.'.value';
677: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
678: my $selectedvalue='this.form.'.$selectelement.
679: '.options['.$selectedindex.'].value';
680: my $typedinvalue='this.form.'.$typeinelement.'.value';
681: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
682: $description=&mt($description);
683: #
684: return (<<ENDSELECTORTYPE);
685: <nobr>
686: $description
687: <select name="$selectelement"
688: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
689: $optionlist
690: </select>
691: <input type="text" size="$size" name="$typeinelement"
692: value="$typeinvalue"
693: onChange="$hiddenvalue=$typedinvalue;"
694: onFocus="$selectedindex=$selecttypeinindex-1;" />
695: <input type="hidden" name="$element" value="$selected" />
696: </nobr>
697: ENDSELECTORTYPE
698: }
699:
700: #----------------------------------------------------- image coordinates
701: # single image coordinates, x, y
702: sub entercoords {
703: my ($idx,,$idy,$mode,$width,$height) = @_;
704: unless ($Apache::edit::bgimgsrc) { return ''; }
705: if ($idx) { $idx.='_'; }
706: if ($idy) { $idy.='_'; }
707: my $bgfile=&Apache::lonnet::escape($Apache::edit::bgimgsrc);
708: my $form = 'lonhomework';
709: my $element;
710: if (! defined($mode) || $mode eq 'attribute') {
711: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
712: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
713: $element = &Apache::lonnet::escape('homework_edit_'.
714: $Apache::lonxml::curdepth);
715: }
716: my $formheight='';
717: if ($height) {
718: $formheight='&formheight='.$height.'_'.$Apache::edit::bgimgsrccurdepth;
719: }
720: my $formwidth='';
721: if ($width) {
722: $formwidth='&formwidth='.$width.'_'.$Apache::edit::bgimgsrccurdepth;
723: }
724: my $result = <<"ENDBUTTON";
725: <a href="/cgi-bin/imagechoice.pl?formname=$form&file=$bgfile&formx=$idx$element&formy=$idy$element$formheight$formwidth"
726: target="imagechoice">Click Coordinates</a>
727: ENDBUTTON
728: return $result;
729: }
730:
731: # coordinates (x1,y1)-(x2,y2)...
732: # mode can be either box, or polygon
733: sub entercoord {
734: my ($idx,$mode,$width,$height,$type) = @_;
735: unless ($Apache::edit::bgimgsrc) { return ''; }
736: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
737: &Apache::lonnet::logthis($Apache::edit::bgfile);
738: my $form = 'lonhomework';
739: my $element;
740: if (! defined($mode) || $mode eq 'attribute') {
741: $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
742: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
743: $element = &Apache::lonnet::escape('homework_edit_'.
744: $Apache::lonxml::curdepth);
745: }
746: my $id=$Apache::lonxml::curdepth;
747: my %data=("imagechoice.$id.type" =>$type,
748: "imagechoice.$id.formname" =>$form,
749: "imagechoice.$id.file" =>$bgfile,
750: "imagechoice.$id.formcoord" =>$element);
751: if ($height) {
752: $data{"imagechoice.$id.formheight"}=$height.'_'.
753: $Apache::edit::bgimgsrccurdepth;
754: }
755: if ($width) {
756: $data{"imagechoice.$id.formwidth"}=$width.'_'.
757: $Apache::edit::bgimgsrccurdepth;
758: }
759: &Apache::lonnet::appenv(%data);
760: my $text="Enter Coordinates";
761: if ($type eq 'polygon') { $text='Create Polygon Data'; }
762: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
763: return $result;
764: }
765:
766: sub deletecoorddata {
767: &Apache::lonnet::delenv("imagechoice\\.");
768: }
769:
770: #----------------------------------------------------- browse
771: sub browse {
772: # insert a link to call up the filesystem browser (lonindexer)
773: my ($id, $mode, $titleid) = @_;
774: my $form = 'lonhomework';
775: my $element;
776: if (! defined($mode) || $mode eq 'attribute') {
777: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
778: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
779: $element = &Apache::lonnet::escape('homework_edit_'.
780: $Apache::lonxml::curdepth);
781: }
782: my $titleelement;
783: if ($titleid) {
784: $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
785: }
786: my $result = <<"ENDBUTTON";
787: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
788: ENDBUTTON
789: return $result;
790: }
791:
792: #----------------------------------------------------- browse
793: sub search {
794: # insert a link to call up the filesystem browser (lonindexer)
795: my ($id, $mode, $titleid) = @_;
796: my $form = 'lonhomework';
797: my $element;
798: if (! defined($mode) || $mode eq 'attribute') {
799: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
800: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
801: $element = &Apache::lonnet::escape('homework_edit_'.
802: $Apache::lonxml::curdepth);
803: }
804: my $titleelement;
805: if ($titleid) {
806: $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
807: }
808: my $result = <<"ENDBUTTON";
809: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
810: ENDBUTTON
811: return $result;
812: }
813:
814:
815: 1;
816: __END__
817:
818: =head1 NAME
819:
820: Apache::edit - edit mode helpers
821:
822: =head1 SYNOPSIS
823:
824: Invoked by many homework and xml related modules.
825:
826: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
827:
828: =head1 INTRODUCTION
829:
830: This module outputs HTML syntax helpful for the rendering of edit
831: mode interfaces.
832:
833: This is part of the LearningOnline Network with CAPA project
834: described at http://www.lon-capa.org.
835:
836: =head1 HANDLER SUBROUTINE
837:
838: There is no handler subroutine.
839:
840: =head1 OTHER SUBROUTINES
841:
842: =over 4
843:
844: =item *
845:
846: initialize_edit() : initialize edit (set colordepth to zero)
847:
848: =item *
849:
850: tag_start($target,$token,$description) : provide deletion and insertion lists
851: for the manipulation of a start tag; return a scalar string
852:
853: =item *
854:
855: tag_end($target,$token,$description) : ending syntax corresponding to
856: &tag_start. return a scalar string.
857:
858: =item *
859:
860: start_table($token) : start table; update colordepth; return scalar string.
861:
862: =item *
863:
864: end_table() : reduce color depth; end table; return scalar string
865:
866: =item *
867:
868: start_spanning_row() : start a new table row spanning the 'edit' environment.
869:
870: =item *
871:
872: start_row() : start a new table row and element.
873:
874: =item *
875:
876: end_row() : end current table element and row.
877:
878: =item *
879:
880: movebuttons($target,$token) : move-up and move-down buttons; return scalar
881: string
882:
883: =item *
884:
885: deletelist($target,$token) : provide a yes option in an HTML select element;
886: return scalar string
887:
888: =item *
889:
890: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
891: $style) : respond to a user delete request by passing relevant stack
892: and array information to various rendering functions; return a scalar string
893:
894: =item *
895:
896: get_insert_list($token) : provide an insertion list based on possibilities
897: from lonxml; return a scalar string
898:
899: =item *
900:
901: insertlist($target,$token) : api that uses get_insert_list;
902: return a scalar string
903:
904: =item *
905:
906: handleinsert($token) : provide an insertion list based on possibilities
907: from lonxml; return a scalar string
908:
909: =item *
910:
911: get_insert_list($token) : provide an insertion list based on possibilities
912: from lonxml; return a scalar string
913:
914: =item *
915: browse($elementname) : provide a link which will open up the filesystem
916: browser (lonindexer) and, once a file is selected, place the result in
917: the form element $elementname.
918:
919: =item *
920: search($elementname) : provide a link which will open up the filesystem
921: searcher (lonsearchcat) and, once a file is selected, place the result in
922: the form element $elementname.
923:
924: =item *
925: editline(tag,data,description,size): Provide a <input type="text" ../> for
926: single-line text entry. This is to be used for text enclosed by tags, not
927: arguements/parameters associated with a tag.
928:
929: =back
930:
931: incomplete...
932:
933: =cut
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