1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.89 2005/01/05 21:20:13 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{"$testtag.num"};
95: if (defined($tagnum)) { last; }
96: }
97: if (!defined ($tagnum)) {$tagnum=$Apache::lonxml::insertlist{"$tag.num"};}
98: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
99: if (!defined($color)) {
100: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
101: }
102: $Apache::edit::colordepth++;
103: push(@Apache::edit::inserttag,$token->[1]);
104: my $result='<div align="right">';
105: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
106: return $result;
107: }
108:
109: sub end_table {
110: $Apache::edit::colordepth--;
111: my $result='</table></div>';
112: $result.="<table><tr><td>";
113:
114: my ($tagname,$closingtag);
115: if (defined($Apache::edit::inserttag[-2])) {
116: $tagname=$Apache::edit::inserttag[-2];
117: } else {$tagname='problem';}
118: if (defined($Apache::edit::inserttag[-1])) {
119: $closingtag=$Apache::edit::inserttag[-1];
120: }
121: $result.=&innerinsertlist('edit',$tagname,$closingtag).
122: "</td></tr></table>";
123: pop(@Apache::edit::inserttag);
124: return $result;
125: }
126:
127: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';}
128: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
129: sub end_row { return '</td></tr>'; }
130:
131: sub movebuttons {
132: my ($target,$token) = @_;
133: my $result='<input type="submit" name="moveup.'.
134: $Apache::lonxml::curdepth.'" value="Move Up" />';
135: $result.='<input type="submit" name="movedown.'.
136: $Apache::lonxml::curdepth.'" value="Move Down" />';
137: return $result;
138: }
139:
140: sub deletelist {
141: my ($target,$token) = @_;
142: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
143: <option></option>
144: <option>Yes</option>
145: </select>";
146: return $result;
147: }
148:
149: sub handle_delete {
150: if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
151: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
152: my $result=0;
153: if ($space) {
154: my $sub1="$space\:\:delete_$token->[1]";
155: {
156: no strict 'refs';
157: if (defined &$sub1) {
158: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
159: }
160: }
161: }
162: if (!$result) {
163: my $endtag='/'.$token->[1];
164: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
165: $$parser['-1']->get_token();
166: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
167: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
168: }
169: return 1;
170: }
171:
172: sub get_insert_list {
173: my ($tagname) = @_;
174: my $result='';
175: my @tagnums= ();
176: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
177: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
178: push (@tagnums, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
179: }
180: foreach my $namespace (@Apache::lonxml::namespace) {
181: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
182: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
183: }
184: }
185: if (@tagnums) {
186: my %options;
187: foreach my $tagnum (@tagnums) {
188: my $descrip=$Apache::lonxml::insertlist{"$tagnum.description"};
189: $options{$descrip} ="<option value=\"$tagnum\">".
190: $descrip."</option>\n";
191: }
192: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
193: if ($result) { $result='<option selected="selected"></option>'.$result; }
194: }
195: return $result;
196: }
197:
198: sub insertlist {
199: my ($target,$token) = @_;
200: return &innerinsertlist($target,$token->[1]);
201: }
202:
203: sub innerinsertlist {
204: my ($target,$tagname,$closingtag) = @_;
205: my $result;
206: my $after='';
207: if ($closingtag) {
208: $after='_after_'.$closingtag;
209: }
210: if ($target eq 'edit') {
211: my $optionlist= &get_insert_list($tagname);
212: if ($optionlist) {
213: $result = "Insert:
214: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
215: $optionlist
216: </select>"
217: } else {
218: $result=" ";
219: }
220: }
221: return $result;
222: }
223:
224: sub handle_insert {
225: if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
226: my $result;
227: my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
228: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
229: if ($func eq 'default') {
230: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
231: my $namespace;
232: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
233: $result.="\n<$newtag>\n</$newtag>";
234: } else {
235: if (defined(&$func)) {
236: {
237: no strict 'refs';
238: $result.=&$func();
239: }
240: } else {
241: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
242: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
243: }
244: }
245: return $result;
246: }
247:
248: sub handle_insertafter {
249: my $tagname=shift;
250: if ($ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '')
251: { return ''; }
252: my $result;
253: my $tagnum =$ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
254: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
255: if ($func eq 'default') {
256: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
257: my $namespace;
258: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
259: $result.="\n<$newtag>\n</$newtag>";
260: } else {
261: if (defined(&$func)) {
262: {
263: no strict 'refs';
264: $result.=&$func();
265: }
266: } else {
267: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
268: &Apache::lonxml::error("Unable to insert (after) tag $newtag, $func was not defined. ($tagname $tagnum)");
269: }
270: }
271: return $result;
272: }
273:
274: sub insert_img {
275: return '
276: <img />';
277: }
278:
279: sub insert_responseparam {
280: return '
281: <responseparam />';
282: }
283:
284: sub insert_parameter {
285: return '
286: <parameter />';
287: }
288:
289: sub insert_formularesponse {
290: return '
291: <formularesponse answer="" samples="">
292: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
293: <textline size="25"/>
294: <hintgroup>
295: <startouttext /><endouttext />
296: </hintgroup>
297: </formularesponse>';
298: }
299:
300: sub insert_numericalresponse {
301: return '
302: <numericalresponse answer="">
303: <textline />
304: <hintgroup>
305: <startouttext /><endouttext />
306: </hintgroup>
307: </numericalresponse>';
308: }
309:
310: sub insert_stringresponse {
311: return '
312: <stringresponse answer="" type="">
313: <textline />
314: <hintgroup>
315: <startouttext /><endouttext />
316: </hintgroup>
317: </stringresponse>';
318: }
319:
320: sub insert_essayresponse {
321: return '
322: <essayresponse>
323: <textfield></textfield>
324: </essayresponse>';
325: }
326:
327: sub insert_imageresponse {
328: return '
329: <imageresponse max="1">
330: <foilgroup>
331: <foil>
332: </foil>
333: </foilgroup>
334: <hintgroup>
335: <startouttext /><endouttext />
336: </hintgroup>
337: </imageresponse>';
338: }
339:
340: sub insert_optionresponse {
341: return '
342: <optionresponse max="10">
343: <foilgroup options="">
344: <foil>
345: <startouttext /><endouttext />
346: </foil>
347: </foilgroup>
348: <hintgroup>
349: <startouttext /><endouttext />
350: </hintgroup>
351: </optionresponse>';
352: }
353:
354: sub insert_organicresponse {
355: return '
356: <organicresponse>
357: <textline />
358: <hintgroup>
359: <startouttext /><endouttext />
360: </hintgroup>
361: </organicresponse>';
362: }
363:
364: sub insert_organicstructure {
365: return '
366: <organicstructure />
367: ';
368: }
369:
370: sub insert_radiobuttonresponse {
371: return '
372: <radiobuttonresponse max="10">
373: <foilgroup>
374: <foil>
375: <startouttext /><endouttext />
376: </foil>
377: </foilgroup>
378: <hintgroup>
379: <startouttext /><endouttext />
380: </hintgroup>
381: </radiobuttonresponse>';
382: }
383:
384: sub insert_reactionresponse {
385: return '
386: <reactionresponse>
387: <textline />
388: <hintgroup>
389: <startouttext /><endouttext />
390: </hintgroup>
391: </reactionresponse>';
392: }
393:
394: sub insert_rankresponse {
395: return '
396: <rankresponse max="10">
397: <foilgroup options="">
398: <foil>
399: <startouttext /><endouttext />
400: </foil>
401: </foilgroup>
402: <hintgroup>
403: <startouttext /><endouttext />
404: </hintgroup>
405: </rankresponse>';
406: }
407:
408: sub insert_matchresponse {
409: return '
410: <matchresponse max="10">
411: <foilgroup options="">
412: <itemgroup>
413: </itemgroup>
414: <foil>
415: <startouttext /><endouttext />
416: </foil>
417: </foilgroup>
418: <hintgroup>
419: <startouttext /><endouttext />
420: </hintgroup>
421: </matchresponse>';
422: }
423:
424: sub insert_displayduedate { return '<displayduedate />'; }
425: sub insert_displaytitle { return '<displaytitle />'; }
426: sub insert_hintpart {
427: return '
428: <hintpart on="default">
429: <startouttext/>
430: <endouttext />
431: </hintpart>';
432: }
433:
434: sub insert_hintgroup {
435: return '
436: <hintgroup>
437: <startouttext /><endouttext />
438: </hintgroup>';
439: }
440:
441: sub insert_numericalhint {
442: return '
443: <numericalhint>
444: </numericalhint>';
445: }
446:
447: sub insert_stringhint {
448: return '
449: <stringhint>
450: </stringhint>';
451: }
452:
453: sub insert_formulahint {
454: return '
455: <formulahint>
456: </formulahint>';
457: }
458:
459: sub insert_radiobuttonhint {
460: return '
461: <radiobuttonhint>
462: </radiobuttonhint>';
463: }
464:
465: sub insert_optionhint {
466: return '
467: <optionhint>
468: </optionhint>';
469: }
470:
471: sub insert_startouttext {
472: return "<startouttext /><endouttext />";
473: }
474:
475: sub insert_script {
476: return "\n<script type=\"loncapa/perl\"></script>";
477: }
478:
479: sub textarea_sizes {
480: my ($data)=@_;
481: my $count=0;
482: my $maxlength=-1;
483: foreach (split ("\n", $$data)) {
484: $count+=int(length($_)/79);
485: $count++;
486: if (length($_) > $maxlength) { $maxlength = length($_); }
487: }
488: my $rows = $count;
489: my $cols = $maxlength;
490: return ($rows,$cols);
491: }
492:
493: sub editline {
494: my ($tag,$data,$description,$size)=@_;
495: $data=&HTML::Entities::encode($data,'<>&"');
496: if ($description) { $description="<br />".$description."<br />"; }
497: my $result = <<"END";
498: $description
499: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
500: value="$data" size="$size" />
501: END
502: return $result;
503: }
504:
505: sub editfield {
506: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
507:
508: my ($rows,$cols)=&textarea_sizes(\$data);
509: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
510: !&Apache::lonhtmlcommon::htmlareablocked()) {
511: $rows+=7; # make room for HTMLarea
512: $minheight+=7; # make room for HTMLarea
513: }
514: if ($cols > 80) { $cols = 80; }
515: if ($cols < $minwidth ) { $cols = $minwidth; }
516: if ($rows < $minheight) { $rows = $minheight; }
517: if ($description) { $description="<br />".$description."<br />"; }
518: if ($usehtmlarea) {
519: push @Apache::lonxml::htmlareafields,'homework_edit_'.
520: $Apache::lonxml::curdepth;
521: }
522: return $description."\n".' <textarea rows="'.$rows.
523: '" cols="'.$cols.'" name="homework_edit_'.
524: $Apache::lonxml::curdepth.'" id="homework_edit_'.
525: $Apache::lonxml::curdepth.'">'.
526: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
527: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
528: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
529: }
530:
531: sub modifiedfield {
532: my ($endtag,$parser) = @_;
533: my $result;
534: # foreach my $envkey (sort keys %ENV) {
535: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
536: # }
537: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
538: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
539: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
540: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
541: # textareas throw away intial \n
542: if ($bodytext=~/^\n/) { $result="\n".$result; }
543: return $result;
544: }
545:
546: # Returns a 1 if the token has been modified and you should rebuild the tag
547: # side-effects, will modify the $token if new values are found
548: sub get_new_args {
549: my ($token,$parstack,$safeeval,@args)=@_;
550: my $rebuild=0;
551: foreach my $arg (@args) {
552: #just want the string that it was set to
553: my $value=$token->[2]->{$arg};
554: my $element=&html_element_name($arg);
555: my $newvalue=$ENV{"form.$element"};
556: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
557: if (defined($newvalue) && $value ne $newvalue) {
558: if (ref($newvalue) eq 'ARRAY') {
559: $token->[2]->{$arg}=join(',',@$newvalue);
560: } else {
561: $token->[2]->{$arg}=$newvalue;
562: }
563: $rebuild=1;
564: } elsif (!defined($newvalue) && defined($value)) {
565: delete($token->[2]->{$arg});
566: $rebuild=1;
567: }
568: }
569: return $rebuild;
570: }
571:
572: # looks for /> on start tags
573: sub rebuild_tag {
574: my ($token) = @_;
575: my $result;
576: if ($token->[0] eq 'S') {
577: $result = '<'.$token->[1];
578: while (my ($key,$val)= each(%{$token->[2]})) {
579: $val=~s:^\s+|\s+$::g;
580: $val=~s:"::g; #"
581: &Apache::lonxml::debug("setting :$key: to :$val:");
582: $result.=' '.$key.'="'.$val.'"';
583: }
584: if ($token->[4] =~ m:/>$:) {
585: $result.=' />';
586: } else {
587: $result.='>';
588: }
589: } elsif ( $token->[0] eq 'E' ) {
590: $result = '</'.$token->[1].'>';
591: }
592: return $result;
593: }
594:
595: sub html_element_name {
596: my ($name) = @_;
597: return $name.'_'.$Apache::lonxml::curdepth;
598: }
599:
600: sub hidden_arg {
601: my ($name,$token) = @_;
602: my $result;
603: my $arg=$token->[2]{$name};
604: $result='<input name="'.&html_element_name($name).
605: '" type="hidden" value="'.$arg.'" />';
606: return $result;
607: }
608:
609: sub checked_arg {
610: my ($description,$name,$list,$token) = @_;
611: my $result;
612: my $optionlist="";
613: my $allselected=$token->[2]{$name};
614: $result=&mt($description);
615: foreach my $option (@$list) {
616: my ($value,$text);
617: if ( ref($option) eq 'ARRAY') {
618: $value='value="'.$$option[0].'"';
619: $text=$$option[1];
620: $option=$$option[0];
621: } else {
622: $text=$option;
623: $value='value="'.$option.'"';
624: }
625: $result.="<nobr><input type='checkbox' $value name='".
626: &html_element_name($name)."'";
627: foreach my $selected (split(/,/,$allselected)) {
628: if ( $selected eq $option ) {
629: $result.=" checked='checked' ";
630: last;
631: }
632: }
633: $result.=" />$text</nobr>\n";
634: }
635: return $result;
636: }
637:
638: sub text_arg {
639: my ($description,$name,$token,$size) = @_;
640: my $result;
641: if (!defined $size) { $size=20; }
642: my $arg=$token->[2]{$name};
643: $result=&mt($description).' <input name="'.&html_element_name($name).
644: '" type="text" value="'.$arg.'" size="'.$size.'" />';
645: return '<nobr>'.$result.'</nobr>';
646: }
647:
648: sub select_arg {
649: my ($description,$name,$list,$token) = @_;
650: my $result;
651: my $optionlist="";
652: my $selected=$token->[2]{$name};
653: foreach my $option (@$list) {
654: my ($text,$value);
655: if ( ref($option) eq 'ARRAY') {
656: $value='value="'.$$option[0].'"';
657: $text=$$option[1];
658: $option=$$option[0];
659: } else {
660: $text=$option;
661: $value='value="'.$option.'"';
662: }
663: if ( $selected eq $option ) {
664: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
665: } else {
666: $optionlist.="<option $value >$text</option>\n";
667: }
668: }
669: $result.='<nobr>'.$description.' <select name="'.
670: &html_element_name($name).'">
671: '.$optionlist.'
672: </select></nobr>';
673: return $result;
674: }
675:
676: sub select_or_text_arg {
677: my ($description,$name,$list,$token,$size) = @_;
678: my $result;
679: my $optionlist="";
680: my $found=0;
681: my $selected=$token->[2]{$name};
682: foreach my $option (@$list) {
683: my ($text,$value);
684: if ( ref($option) eq 'ARRAY') {
685: $value='value="'.$$option[0].'"';
686: $text=$$option[1];
687: $option=$$option[0];
688: } else {
689: $text=$option;
690: $value='value="'.$option.'"';
691: }
692: if ( $selected eq $option ) {
693: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
694: $found=1;
695: } else {
696: $optionlist.="<option $value>$text</option>\n";
697: }
698: }
699: $optionlist.="<option value=\"TYPEDINVALUE\"".
700: ((!$found)?' selected="selected"':'').
701: ">".&mt('Type-in value')."</option>\n";
702: #
703: my $element=&html_element_name($name);
704: my $selectelement='select_list_'.$element;
705: my $typeinelement='type_in_'.$element;
706: my $typeinvalue=($found?'':$selected);
707: #
708: my $hiddenvalue='this.form.'.$element.'.value';
709: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
710: my $selectedvalue='this.form.'.$selectelement.
711: '.options['.$selectedindex.'].value';
712: my $typedinvalue='this.form.'.$typeinelement.'.value';
713: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
714: $description=&mt($description);
715: #
716: return (<<ENDSELECTORTYPE);
717: <nobr>
718: $description
719: <select name="$selectelement"
720: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
721: $optionlist
722: </select>
723: <input type="text" size="$size" name="$typeinelement"
724: value="$typeinvalue"
725: onChange="$hiddenvalue=$typedinvalue;"
726: onFocus="$selectedindex=$selecttypeinindex-1;" />
727: <input type="hidden" name="$element" value="$selected" />
728: </nobr>
729: ENDSELECTORTYPE
730: }
731:
732: #----------------------------------------------------- image coordinates
733: # single image coordinates, x, y
734: sub entercoords {
735: my ($idx,$idy,$mode,$width,$height) = @_;
736: unless ($Apache::edit::bgimgsrc) { return ''; }
737: if ($idx) { $idx.='_'; }
738: if ($idy) { $idy.='_'; }
739: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
740: my $form = 'lonhomework';
741: my $element;
742: if (! defined($mode) || $mode eq 'attribute') {
743: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
744: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
745: $element = &Apache::lonnet::escape('homework_edit_'.
746: $Apache::lonxml::curdepth);
747: }
748: my $id=$Apache::lonxml::curdepth;
749: my %data=("imagechoice.$id.type" =>'point',
750: "imagechoice.$id.formname" =>$form,
751: "imagechoice.$id.formx" =>"$idx$element",
752: "imagechoice.$id.formy" =>"$idy$element",
753: "imagechoice.$id.file" =>$bgfile,
754: "imagechoice.$id.formcoord" =>$element);
755: if ($height) {
756: $data{"imagechoice.$id.formheight"}=$height.'_'.
757: $Apache::edit::bgimgsrccurdepth;
758: }
759: if ($width) {
760: $data{"imagechoice.$id.formwidth"}=$width.'_'.
761: $Apache::edit::bgimgsrccurdepth;
762: }
763: &Apache::lonnet::appenv(%data);
764: my $text="Click Coordinates";
765: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
766: return $result;
767: }
768:
769: # coordinates (x1,y1)-(x2,y2)...
770: # mode can be either box, or polygon
771: sub entercoord {
772: my ($idx,$mode,$width,$height,$type) = @_;
773: unless ($Apache::edit::bgimgsrc) { return ''; }
774: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
775: my $form = 'lonhomework';
776: my $element;
777: if (! defined($mode) || $mode eq 'attribute') {
778: $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
779: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
780: $element = &Apache::lonnet::escape('homework_edit_'.
781: $Apache::lonxml::curdepth);
782: }
783: my $id=$Apache::lonxml::curdepth;
784: my %data=("imagechoice.$id.type" =>$type,
785: "imagechoice.$id.formname" =>$form,
786: "imagechoice.$id.file" =>$bgfile,
787: "imagechoice.$id.formcoord" =>$element);
788: if ($height) {
789: $data{"imagechoice.$id.formheight"}=$height.'_'.
790: $Apache::edit::bgimgsrccurdepth;
791: }
792: if ($width) {
793: $data{"imagechoice.$id.formwidth"}=$width.'_'.
794: $Apache::edit::bgimgsrccurdepth;
795: }
796: &Apache::lonnet::appenv(%data);
797: my $text="Enter Coordinates";
798: if ($type eq 'polygon') { $text='Create Polygon Data'; }
799: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
800: return $result;
801: }
802:
803: sub deletecoorddata {
804: &Apache::lonnet::delenv("imagechoice\\.");
805: }
806:
807: #----------------------------------------------------- browse
808: sub browse {
809: # insert a link to call up the filesystem browser (lonindexer)
810: my ($id, $mode, $titleid) = @_;
811: my $form = 'lonhomework';
812: my $element;
813: if (! defined($mode) || $mode eq 'attribute') {
814: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
815: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
816: $element = &Apache::lonnet::escape('homework_edit_'.
817: $Apache::lonxml::curdepth);
818: }
819: my $titleelement;
820: if ($titleid) {
821: $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
822: }
823: my $result = <<"ENDBUTTON";
824: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
825: ENDBUTTON
826: return $result;
827: }
828:
829: #----------------------------------------------------- browse
830: sub search {
831: # insert a link to call up the filesystem browser (lonindexer)
832: my ($id, $mode, $titleid) = @_;
833: my $form = 'lonhomework';
834: my $element;
835: if (! defined($mode) || $mode eq 'attribute') {
836: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
837: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
838: $element = &Apache::lonnet::escape('homework_edit_'.
839: $Apache::lonxml::curdepth);
840: }
841: my $titleelement;
842: if ($titleid) {
843: $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
844: }
845: my $result = <<"ENDBUTTON";
846: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
847: ENDBUTTON
848: return $result;
849: }
850:
851:
852: 1;
853: __END__
854:
855: =head1 NAME
856:
857: Apache::edit - edit mode helpers
858:
859: =head1 SYNOPSIS
860:
861: Invoked by many homework and xml related modules.
862:
863: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
864:
865: =head1 INTRODUCTION
866:
867: This module outputs HTML syntax helpful for the rendering of edit
868: mode interfaces.
869:
870: This is part of the LearningOnline Network with CAPA project
871: described at http://www.lon-capa.org.
872:
873: =head1 HANDLER SUBROUTINE
874:
875: There is no handler subroutine.
876:
877: =head1 OTHER SUBROUTINES
878:
879: =over 4
880:
881: =item *
882:
883: initialize_edit() : initialize edit (set colordepth to zero)
884:
885: =item *
886:
887: tag_start($target,$token,$description) : provide deletion and insertion lists
888: for the manipulation of a start tag; return a scalar string
889:
890: =item *
891:
892: tag_end($target,$token,$description) : ending syntax corresponding to
893: &tag_start. return a scalar string.
894:
895: =item *
896:
897: start_table($token) : start table; update colordepth; return scalar string.
898:
899: =item *
900:
901: end_table() : reduce color depth; end table; return scalar string
902:
903: =item *
904:
905: start_spanning_row() : start a new table row spanning the 'edit' environment.
906:
907: =item *
908:
909: start_row() : start a new table row and element.
910:
911: =item *
912:
913: end_row() : end current table element and row.
914:
915: =item *
916:
917: movebuttons($target,$token) : move-up and move-down buttons; return scalar
918: string
919:
920: =item *
921:
922: deletelist($target,$token) : provide a yes option in an HTML select element;
923: return scalar string
924:
925: =item *
926:
927: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
928: $style) : respond to a user delete request by passing relevant stack
929: and array information to various rendering functions; return a scalar string
930:
931: =item *
932:
933: get_insert_list($token) : provide an insertion list based on possibilities
934: from lonxml; return a scalar string
935:
936: =item *
937:
938: insertlist($target,$token) : api that uses get_insert_list;
939: return a scalar string
940:
941: =item *
942:
943: handleinsert($token) : provide an insertion list based on possibilities
944: from lonxml; return a scalar string
945:
946: =item *
947:
948: get_insert_list($token) : provide an insertion list based on possibilities
949: from lonxml; return a scalar string
950:
951: =item *
952: browse($elementname) : provide a link which will open up the filesystem
953: browser (lonindexer) and, once a file is selected, place the result in
954: the form element $elementname.
955:
956: =item *
957: search($elementname) : provide a link which will open up the filesystem
958: searcher (lonsearchcat) and, once a file is selected, place the result in
959: the form element $elementname.
960:
961: =item *
962: editline(tag,data,description,size): Provide a <input type="text" ../> for
963: single-line text entry. This is to be used for text enclosed by tags, not
964: arguements/parameters associated with a tag.
965:
966: =back
967:
968: incomplete...
969:
970: =cut
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