1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.94 2005/08/30 15:36:07 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: $result.='<div align="left"><table><tr><td>';
113:
114: my ($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></div>";
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 ".$Apache::lonxml::curdepth." ($tagnum) $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: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
304: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
305: <textline />
306: <hintgroup>
307: <startouttext /><endouttext />
308: </hintgroup>
309: </numericalresponse>';
310: }
311:
312: sub insert_stringresponse {
313: return '
314: <stringresponse answer="" type="">
315: <textline />
316: <hintgroup>
317: <startouttext /><endouttext />
318: </hintgroup>
319: </stringresponse>';
320: }
321:
322: sub insert_essayresponse {
323: return '
324: <essayresponse>
325: <textfield></textfield>
326: </essayresponse>';
327: }
328:
329: sub insert_imageresponse {
330: return '
331: <imageresponse max="1">
332: <foilgroup>
333: <foil>
334: </foil>
335: </foilgroup>
336: <hintgroup>
337: <startouttext /><endouttext />
338: </hintgroup>
339: </imageresponse>';
340: }
341:
342: sub insert_optionresponse {
343: return '
344: <optionresponse max="10">
345: <foilgroup options="">
346: <foil>
347: <startouttext /><endouttext />
348: </foil>
349: </foilgroup>
350: <hintgroup>
351: <startouttext /><endouttext />
352: </hintgroup>
353: </optionresponse>';
354: }
355:
356: sub insert_organicresponse {
357: return '
358: <organicresponse>
359: <textline />
360: <hintgroup>
361: <startouttext /><endouttext />
362: </hintgroup>
363: </organicresponse>';
364: }
365:
366: sub insert_organicstructure {
367: return '
368: <organicstructure />
369: ';
370: }
371:
372: sub insert_radiobuttonresponse {
373: return '
374: <radiobuttonresponse max="10">
375: <foilgroup>
376: <foil>
377: <startouttext /><endouttext />
378: </foil>
379: </foilgroup>
380: <hintgroup>
381: <startouttext /><endouttext />
382: </hintgroup>
383: </radiobuttonresponse>';
384: }
385:
386: sub insert_reactionresponse {
387: return '
388: <reactionresponse>
389: <textline />
390: <hintgroup>
391: <startouttext /><endouttext />
392: </hintgroup>
393: </reactionresponse>';
394: }
395:
396: sub insert_rankresponse {
397: return '
398: <rankresponse max="10">
399: <foilgroup options="">
400: <foil>
401: <startouttext /><endouttext />
402: </foil>
403: </foilgroup>
404: <hintgroup>
405: <startouttext /><endouttext />
406: </hintgroup>
407: </rankresponse>';
408: }
409:
410: sub insert_matchresponse {
411: return '
412: <matchresponse max="10">
413: <foilgroup options="">
414: <itemgroup>
415: </itemgroup>
416: <foil>
417: <startouttext /><endouttext />
418: </foil>
419: </foilgroup>
420: <hintgroup>
421: <startouttext /><endouttext />
422: </hintgroup>
423: </matchresponse>';
424: }
425:
426: sub insert_displayduedate { return '<displayduedate />'; }
427: sub insert_displaytitle { return '<displaytitle />'; }
428: sub insert_hintpart {
429: return '
430: <hintpart on="default">
431: <startouttext/><endouttext />
432: </hintpart>';
433: }
434:
435: sub insert_hintgroup {
436: return '
437: <hintgroup>
438: <startouttext /><endouttext />
439: </hintgroup>';
440: }
441:
442: sub insert_numericalhint {
443: return '
444: <numericalhint>
445: </numericalhint>';
446: }
447:
448: sub insert_stringhint {
449: return '
450: <stringhint>
451: </stringhint>';
452: }
453:
454: sub insert_formulahint {
455: return '
456: <formulahint>
457: </formulahint>';
458: }
459:
460: sub insert_radiobuttonhint {
461: return '
462: <radiobuttonhint>
463: </radiobuttonhint>';
464: }
465:
466: sub insert_optionhint {
467: return '
468: <optionhint>
469: </optionhint>';
470: }
471:
472: sub insert_startouttext {
473: return "<startouttext /><endouttext />";
474: }
475:
476: sub insert_script {
477: return "\n<script type=\"loncapa/perl\"></script>";
478: }
479:
480: sub textarea_sizes {
481: my ($data)=@_;
482: my $count=0;
483: my $maxlength=-1;
484: foreach (split ("\n", $$data)) {
485: $count+=int(length($_)/79);
486: $count++;
487: if (length($_) > $maxlength) { $maxlength = length($_); }
488: }
489: my $rows = $count;
490: my $cols = $maxlength;
491: return ($rows,$cols);
492: }
493:
494: sub editline {
495: my ($tag,$data,$description,$size)=@_;
496: $data=&HTML::Entities::encode($data,'<>&"');
497: if ($description) { $description="<br />".$description."<br />"; }
498: my $result = <<"END";
499: $description
500: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
501: value="$data" size="$size" />
502: END
503: return $result;
504: }
505:
506: sub editfield {
507: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
508:
509: my ($rows,$cols)=&textarea_sizes(\$data);
510: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
511: !&Apache::lonhtmlcommon::htmlareablocked()) {
512: $rows+=7; # make room for HTMLarea
513: $minheight+=7; # make room for HTMLarea
514: }
515: if ($cols > 80) { $cols = 80; }
516: if ($cols < $minwidth ) { $cols = $minwidth; }
517: if ($rows < $minheight) { $rows = $minheight; }
518: if ($description) { $description="<br />".$description."<br />"; }
519: if ($usehtmlarea) {
520: push @Apache::lonxml::htmlareafields,'homework_edit_'.
521: $Apache::lonxml::curdepth;
522: }
523: return $description."\n".' <textarea style="width:100%" rows="'.$rows.
524: '" cols="'.$cols.'" name="homework_edit_'.
525: $Apache::lonxml::curdepth.'" id="homework_edit_'.
526: $Apache::lonxml::curdepth.'">'.
527: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
528: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
529: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
530: }
531:
532: sub modifiedfield {
533: my ($endtag,$parser) = @_;
534: my $result;
535: # foreach my $envkey (sort keys %env) {
536: # &Apache::lonxml::debug("$envkey ---- $env{$envkey}");
537: # }
538: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
539: # &Apache::lonxml::debug($env{"form.homework_edit_$Apache::lonxml::curdepth"});
540: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
541: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
542: # textareas throw away intial \n
543: if ($bodytext=~/^\n/) { $result="\n".$result; }
544: return $result;
545: }
546:
547: # Returns a 1 if the token has been modified and you should rebuild the tag
548: # side-effects, will modify the $token if new values are found
549: sub get_new_args {
550: my ($token,$parstack,$safeeval,@args)=@_;
551: my $rebuild=0;
552: foreach my $arg (@args) {
553: #just want the string that it was set to
554: my $value=$token->[2]->{$arg};
555: my $element=&html_element_name($arg);
556: my $newvalue=$env{"form.$element"};
557: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
558: if (defined($newvalue) && $value ne $newvalue) {
559: if (ref($newvalue) eq 'ARRAY') {
560: $token->[2]->{$arg}=join(',',@$newvalue);
561: } else {
562: $token->[2]->{$arg}=$newvalue;
563: }
564: $rebuild=1;
565: } elsif (!defined($newvalue) && defined($value)) {
566: delete($token->[2]->{$arg});
567: $rebuild=1;
568: }
569: }
570: return $rebuild;
571: }
572:
573: # looks for /> on start tags
574: sub rebuild_tag {
575: my ($token) = @_;
576: my $result;
577: if ($token->[0] eq 'S') {
578: $result = '<'.$token->[1];
579: while (my ($key,$val)= each(%{$token->[2]})) {
580: $val=~s:^\s+|\s+$::g;
581: $val=~s:"::g; #"
582: &Apache::lonxml::debug("setting :$key: to :$val:");
583: $result.=' '.$key.'="'.$val.'"';
584: }
585: if ($token->[4] =~ m:/>$:) {
586: $result.=' />';
587: } else {
588: $result.='>';
589: }
590: } elsif ( $token->[0] eq 'E' ) {
591: $result = '</'.$token->[1].'>';
592: }
593: return $result;
594: }
595:
596: sub html_element_name {
597: my ($name) = @_;
598: return $name.'_'.$Apache::lonxml::curdepth;
599: }
600:
601: sub hidden_arg {
602: my ($name,$token) = @_;
603: my $result;
604: my $arg=$token->[2]{$name};
605: $result='<input name="'.&html_element_name($name).
606: '" type="hidden" value="'.$arg.'" />';
607: return $result;
608: }
609:
610: sub checked_arg {
611: my ($description,$name,$list,$token) = @_;
612: my $result;
613: my $optionlist="";
614: my $allselected=$token->[2]{$name};
615: $result=&mt($description);
616: foreach my $option (@$list) {
617: my ($value,$text);
618: if ( ref($option) eq 'ARRAY') {
619: $value='value="'.$$option[0].'"';
620: $text=$$option[1];
621: $option=$$option[0];
622: } else {
623: $text=$option;
624: $value='value="'.$option.'"';
625: }
626: $result.="<nobr><input type='checkbox' $value name='".
627: &html_element_name($name)."'";
628: foreach my $selected (split(/,/,$allselected)) {
629: if ( $selected eq $option ) {
630: $result.=" checked='checked' ";
631: last;
632: }
633: }
634: $result.=" />$text</nobr>\n";
635: }
636: return $result;
637: }
638:
639: sub text_arg {
640: my ($description,$name,$token,$size) = @_;
641: my $result;
642: if (!defined $size) { $size=20; }
643: my $arg=$token->[2]{$name};
644: $result=&mt($description).' <input name="'.&html_element_name($name).
645: '" type="text" value="'.$arg.'" size="'.$size.'" />';
646: return '<nobr>'.$result.'</nobr>';
647: }
648:
649: sub select_arg {
650: my ($description,$name,$list,$token) = @_;
651: my $result;
652: my $optionlist="";
653: my $selected=$token->[2]{$name};
654: foreach my $option (@$list) {
655: my ($text,$value);
656: if ( ref($option) eq 'ARRAY') {
657: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
658: $text=$$option[1];
659: $option=$$option[0];
660: } else {
661: $text=$option;
662: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
663: }
664: if ( $selected eq $option ) {
665: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
666: } else {
667: $optionlist.="<option $value >$text</option>\n";
668: }
669: }
670: $result.='<nobr>'.$description.' <select name="'.
671: &html_element_name($name).'">
672: '.$optionlist.'
673: </select></nobr>';
674: return $result;
675: }
676:
677: sub select_or_text_arg {
678: my ($description,$name,$list,$token,$size) = @_;
679: my $result;
680: my $optionlist="";
681: my $found=0;
682: my $selected=$token->[2]{$name};
683: foreach my $option (@$list) {
684: my ($text,$value);
685: if ( ref($option) eq 'ARRAY') {
686: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
687: $text=$$option[1];
688: $option=$$option[0];
689: } else {
690: $text=$option;
691: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
692: }
693: if ( $selected eq $option ) {
694: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
695: $found=1;
696: } else {
697: $optionlist.="<option $value>$text</option>\n";
698: }
699: }
700: $optionlist.="<option value=\"TYPEDINVALUE\"".
701: ((!$found)?' selected="selected"':'').
702: ">".&mt('Type-in value')."</option>\n";
703: #
704: my $element=&html_element_name($name);
705: my $selectelement='select_list_'.$element;
706: my $typeinelement='type_in_'.$element;
707: my $typeinvalue=($found?'':$selected);
708: #
709: my $hiddenvalue='this.form.'.$element.'.value';
710: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
711: my $selectedvalue='this.form.'.$selectelement.
712: '.options['.$selectedindex.'].value';
713: my $typedinvalue='this.form.'.$typeinelement.'.value';
714: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
715: $description=&mt($description);
716: #
717: return (<<ENDSELECTORTYPE);
718: <nobr>
719: $description
720: <select name="$selectelement"
721: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
722: $optionlist
723: </select>
724: <input type="text" size="$size" name="$typeinelement"
725: value="$typeinvalue"
726: onChange="$hiddenvalue=$typedinvalue;"
727: onFocus="$selectedindex=$selecttypeinindex-1;" />
728: <input type="hidden" name="$element" value="$selected" />
729: </nobr>
730: ENDSELECTORTYPE
731: }
732:
733: #----------------------------------------------------- image coordinates
734: # single image coordinates, x, y
735: sub entercoords {
736: my ($idx,$idy,$mode,$width,$height) = @_;
737: unless ($Apache::edit::bgimgsrc) { return ''; }
738: if ($idx) { $idx.='_'; }
739: if ($idy) { $idy.='_'; }
740: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
741: my $form = 'lonhomework';
742: my $element;
743: if (! defined($mode) || $mode eq 'attribute') {
744: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
745: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
746: $element = &Apache::lonnet::escape('homework_edit_'.
747: $Apache::lonxml::curdepth);
748: }
749: my $id=$Apache::lonxml::curdepth;
750: my %data=("imagechoice.$id.type" =>'point',
751: "imagechoice.$id.formname" =>$form,
752: "imagechoice.$id.formx" =>"$idx$element",
753: "imagechoice.$id.formy" =>"$idy$element",
754: "imagechoice.$id.file" =>$bgfile,
755: "imagechoice.$id.formcoord" =>$element);
756: if ($height) {
757: $data{"imagechoice.$id.formheight"}=$height.'_'.
758: $Apache::edit::bgimgsrccurdepth;
759: }
760: if ($width) {
761: $data{"imagechoice.$id.formwidth"}=$width.'_'.
762: $Apache::edit::bgimgsrccurdepth;
763: }
764: &Apache::lonnet::appenv(%data);
765: my $text="Click Coordinates";
766: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
767: return $result;
768: }
769:
770: # coordinates (x1,y1)-(x2,y2)...
771: # mode can be either box, or polygon
772: sub entercoord {
773: my ($idx,$mode,$width,$height,$type) = @_;
774: unless ($Apache::edit::bgimgsrc) { return ''; }
775: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
776: my $form = 'lonhomework';
777: my $element;
778: if (! defined($mode) || $mode eq 'attribute') {
779: $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
780: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
781: $element = &Apache::lonnet::escape('homework_edit_'.
782: $Apache::lonxml::curdepth);
783: }
784: my $id=$Apache::lonxml::curdepth;
785: my %data=("imagechoice.$id.type" =>$type,
786: "imagechoice.$id.formname" =>$form,
787: "imagechoice.$id.file" =>$bgfile,
788: "imagechoice.$id.formcoord" =>$element);
789: if ($height) {
790: $data{"imagechoice.$id.formheight"}=$height.'_'.
791: $Apache::edit::bgimgsrccurdepth;
792: }
793: if ($width) {
794: $data{"imagechoice.$id.formwidth"}=$width.'_'.
795: $Apache::edit::bgimgsrccurdepth;
796: }
797: &Apache::lonnet::appenv(%data);
798: my $text="Enter Coordinates";
799: if ($type eq 'polygon') { $text='Create Polygon Data'; }
800: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
801: return $result;
802: }
803:
804: sub deletecoorddata {
805: &Apache::lonnet::delenv("imagechoice\\.");
806: }
807:
808: #----------------------------------------------------- browse
809: sub browse {
810: # insert a link to call up the filesystem browser (lonindexer)
811: my ($id, $mode, $titleid) = @_;
812: my $form = 'lonhomework';
813: my $element;
814: if (! defined($mode) || $mode eq 'attribute') {
815: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
816: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
817: $element = &Apache::lonnet::escape('homework_edit_'.
818: $Apache::lonxml::curdepth);
819: }
820: my $titleelement;
821: if ($titleid) {
822: $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
823: }
824: my $result = <<"ENDBUTTON";
825: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
826: ENDBUTTON
827: return $result;
828: }
829:
830: #----------------------------------------------------- browse
831: sub search {
832: # insert a link to call up the filesystem browser (lonindexer)
833: my ($id, $mode, $titleid) = @_;
834: my $form = 'lonhomework';
835: my $element;
836: if (! defined($mode) || $mode eq 'attribute') {
837: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
838: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
839: $element = &Apache::lonnet::escape('homework_edit_'.
840: $Apache::lonxml::curdepth);
841: }
842: my $titleelement;
843: if ($titleid) {
844: $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
845: }
846: my $result = <<"ENDBUTTON";
847: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
848: ENDBUTTON
849: return $result;
850: }
851:
852:
853: 1;
854: __END__
855:
856: =head1 NAME
857:
858: Apache::edit - edit mode helpers
859:
860: =head1 SYNOPSIS
861:
862: Invoked by many homework and xml related modules.
863:
864: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
865:
866: =head1 INTRODUCTION
867:
868: This module outputs HTML syntax helpful for the rendering of edit
869: mode interfaces.
870:
871: This is part of the LearningOnline Network with CAPA project
872: described at http://www.lon-capa.org.
873:
874: =head1 HANDLER SUBROUTINE
875:
876: There is no handler subroutine.
877:
878: =head1 OTHER SUBROUTINES
879:
880: =over 4
881:
882: =item *
883:
884: initialize_edit() : initialize edit (set colordepth to zero)
885:
886: =item *
887:
888: tag_start($target,$token,$description) : provide deletion and insertion lists
889: for the manipulation of a start tag; return a scalar string
890:
891: =item *
892:
893: tag_end($target,$token,$description) : ending syntax corresponding to
894: &tag_start. return a scalar string.
895:
896: =item *
897:
898: start_table($token) : start table; update colordepth; return scalar string.
899:
900: =item *
901:
902: end_table() : reduce color depth; end table; return scalar string
903:
904: =item *
905:
906: start_spanning_row() : start a new table row spanning the 'edit' environment.
907:
908: =item *
909:
910: start_row() : start a new table row and element.
911:
912: =item *
913:
914: end_row() : end current table element and row.
915:
916: =item *
917:
918: movebuttons($target,$token) : move-up and move-down buttons; return scalar
919: string
920:
921: =item *
922:
923: deletelist($target,$token) : provide a yes option in an HTML select element;
924: return scalar string
925:
926: =item *
927:
928: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
929: $style) : respond to a user delete request by passing relevant stack
930: and array information to various rendering functions; return a scalar string
931:
932: =item *
933:
934: get_insert_list($token) : provide an insertion list based on possibilities
935: from lonxml; return a scalar string
936:
937: =item *
938:
939: insertlist($target,$token) : api that uses get_insert_list;
940: return a scalar string
941:
942: =item *
943:
944: handleinsert($token) : provide an insertion list based on possibilities
945: from lonxml; return a scalar string
946:
947: =item *
948:
949: get_insert_list($token) : provide an insertion list based on possibilities
950: from lonxml; return a scalar string
951:
952: =item *
953: browse($elementname) : provide a link which will open up the filesystem
954: browser (lonindexer) and, once a file is selected, place the result in
955: the form element $elementname.
956:
957: =item *
958: search($elementname) : provide a link which will open up the filesystem
959: searcher (lonsearchcat) and, once a file is selected, place the result in
960: the form element $elementname.
961:
962: =item *
963: editline(tag,data,description,size): Provide a <input type="text" ../> for
964: single-line text entry. This is to be used for text enclosed by tags, not
965: arguements/parameters associated with a tag.
966:
967: =back
968:
969: incomplete...
970:
971: =cut
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