1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.88 2004/10/26 15:06:58 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: </foilgroup>
332: <hintgroup>
333: <startouttext /><endouttext />
334: </hintgroup>
335: </imageresponse>';
336: }
337:
338: sub insert_optionresponse {
339: return '
340: <optionresponse max="10">
341: <foilgroup options="">
342: </foilgroup>
343: <hintgroup>
344: <startouttext /><endouttext />
345: </hintgroup>
346: </optionresponse>';
347: }
348:
349: sub insert_organicresponse {
350: return '
351: <organicresponse>
352: <textline />
353: <hintgroup>
354: <startouttext /><endouttext />
355: </hintgroup>
356: </organicresponse>';
357: }
358:
359: sub insert_organicstructure {
360: return '
361: <organicstructure />
362: ';
363: }
364:
365: sub insert_radiobuttonresponse {
366: return '
367: <radiobuttonresponse max="10">
368: <foilgroup>
369: </foilgroup>
370: <hintgroup>
371: <startouttext /><endouttext />
372: </hintgroup>
373: </radiobuttonresponse>';
374: }
375:
376: sub insert_reactionresponse {
377: return '
378: <reactionresponse>
379: <textline />
380: <hintgroup>
381: <startouttext /><endouttext />
382: </hintgroup>
383: </reactionresponse>';
384: }
385:
386: sub insert_rankresponse {
387: return '
388: <rankresponse max="10">
389: <foilgroup options="">
390: </foilgroup>
391: <hintgroup>
392: <startouttext /><endouttext />
393: </hintgroup>
394: </rankresponse>';
395: }
396:
397: sub insert_matchresponse {
398: return '
399: <matchresponse max="10">
400: <foilgroup options="">
401: <itemgroup>
402: </itemgroup>
403: </foilgroup>
404: <hintgroup>
405: <startouttext /><endouttext />
406: </hintgroup>
407: </matchresponse>';
408: }
409:
410: sub insert_displayduedate { return '<displayduedate />'; }
411: sub insert_displaytitle { return '<displaytitle />'; }
412: sub insert_hintpart {
413: return '
414: <hintpart on="default">
415: <startouttext/>
416: <endouttext />
417: </hintpart>';
418: }
419:
420: sub insert_hintgroup {
421: return '
422: <hintgroup>
423: <startouttext /><endouttext />
424: </hintgroup>';
425: }
426:
427: sub insert_numericalhint {
428: return '
429: <numericalhint>
430: </numericalhint>';
431: }
432:
433: sub insert_stringhint {
434: return '
435: <stringhint>
436: </stringhint>';
437: }
438:
439: sub insert_formulahint {
440: return '
441: <formulahint>
442: </formulahint>';
443: }
444:
445: sub insert_radiobuttonhint {
446: return '
447: <radiobuttonhint>
448: </radiobuttonhint>';
449: }
450:
451: sub insert_optionhint {
452: return '
453: <optionhint>
454: </optionhint>';
455: }
456:
457: sub insert_startouttext {
458: return "<startouttext /><endouttext />";
459: }
460:
461: sub insert_script {
462: return "\n<script type=\"loncapa/perl\"></script>";
463: }
464:
465: sub textarea_sizes {
466: my ($data)=@_;
467: my $count=0;
468: my $maxlength=-1;
469: foreach (split ("\n", $$data)) {
470: $count+=int(length($_)/79);
471: $count++;
472: if (length($_) > $maxlength) { $maxlength = length($_); }
473: }
474: my $rows = $count;
475: my $cols = $maxlength;
476: return ($rows,$cols);
477: }
478:
479: sub editline {
480: my ($tag,$data,$description,$size)=@_;
481: $data=&HTML::Entities::encode($data,'<>&"');
482: if ($description) { $description="<br />".$description."<br />"; }
483: my $result = <<"END";
484: $description
485: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
486: value="$data" size="$size" />
487: END
488: return $result;
489: }
490:
491: sub editfield {
492: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
493:
494: my ($rows,$cols)=&textarea_sizes(\$data);
495: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
496: !&Apache::lonhtmlcommon::htmlareablocked()) {
497: $rows+=7; # make room for HTMLarea
498: $minheight+=7; # make room for HTMLarea
499: }
500: if ($cols > 80) { $cols = 80; }
501: if ($cols < $minwidth ) { $cols = $minwidth; }
502: if ($rows < $minheight) { $rows = $minheight; }
503: if ($description) { $description="<br />".$description."<br />"; }
504: if ($usehtmlarea) {
505: push @Apache::lonxml::htmlareafields,'homework_edit_'.
506: $Apache::lonxml::curdepth;
507: }
508: return $description."\n".' <textarea rows="'.$rows.
509: '" cols="'.$cols.'" name="homework_edit_'.
510: $Apache::lonxml::curdepth.'" id="homework_edit_'.
511: $Apache::lonxml::curdepth.'">'.
512: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
513: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
514: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
515: }
516:
517: sub modifiedfield {
518: my ($endtag,$parser) = @_;
519: my $result;
520: # foreach my $envkey (sort keys %ENV) {
521: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
522: # }
523: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
524: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
525: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
526: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
527: # textareas throw away intial \n
528: if ($bodytext=~/^\n/) { $result="\n".$result; }
529: return $result;
530: }
531:
532: # Returns a 1 if the token has been modified and you should rebuild the tag
533: # side-effects, will modify the $token if new values are found
534: sub get_new_args {
535: my ($token,$parstack,$safeeval,@args)=@_;
536: my $rebuild=0;
537: foreach my $arg (@args) {
538: #just want the string that it was set to
539: my $value=$token->[2]->{$arg};
540: my $element=&html_element_name($arg);
541: my $newvalue=$ENV{"form.$element"};
542: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
543: if (defined($newvalue) && $value ne $newvalue) {
544: if (ref($newvalue) eq 'ARRAY') {
545: $token->[2]->{$arg}=join(',',@$newvalue);
546: } else {
547: $token->[2]->{$arg}=$newvalue;
548: }
549: $rebuild=1;
550: } elsif (!defined($newvalue) && defined($value)) {
551: delete($token->[2]->{$arg});
552: $rebuild=1;
553: }
554: }
555: return $rebuild;
556: }
557:
558: # looks for /> on start tags
559: sub rebuild_tag {
560: my ($token) = @_;
561: my $result;
562: if ($token->[0] eq 'S') {
563: $result = '<'.$token->[1];
564: while (my ($key,$val)= each(%{$token->[2]})) {
565: $val=~s:^\s+|\s+$::g;
566: $val=~s:"::g; #"
567: &Apache::lonxml::debug("setting :$key: to :$val:");
568: $result.=' '.$key.'="'.$val.'"';
569: }
570: if ($token->[4] =~ m:/>$:) {
571: $result.=' />';
572: } else {
573: $result.='>';
574: }
575: } elsif ( $token->[0] eq 'E' ) {
576: $result = '</'.$token->[1].'>';
577: }
578: return $result;
579: }
580:
581: sub html_element_name {
582: my ($name) = @_;
583: return $name.'_'.$Apache::lonxml::curdepth;
584: }
585:
586: sub hidden_arg {
587: my ($name,$token) = @_;
588: my $result;
589: my $arg=$token->[2]{$name};
590: $result='<input name="'.&html_element_name($name).
591: '" type="hidden" value="'.$arg.'" />';
592: return $result;
593: }
594:
595: sub checked_arg {
596: my ($description,$name,$list,$token) = @_;
597: my $result;
598: my $optionlist="";
599: my $allselected=$token->[2]{$name};
600: $result=&mt($description);
601: foreach my $option (@$list) {
602: my ($value,$text);
603: if ( ref($option) eq 'ARRAY') {
604: $value='value="'.$$option[0].'"';
605: $text=$$option[1];
606: $option=$$option[0];
607: } else {
608: $text=$option;
609: $value='value="'.$option.'"';
610: }
611: $result.="<nobr><input type='checkbox' $value name='".
612: &html_element_name($name)."'";
613: foreach my $selected (split(/,/,$allselected)) {
614: if ( $selected eq $option ) {
615: $result.=" checked='checked' ";
616: last;
617: }
618: }
619: $result.=" />$text</nobr>\n";
620: }
621: return $result;
622: }
623:
624: sub text_arg {
625: my ($description,$name,$token,$size) = @_;
626: my $result;
627: if (!defined $size) { $size=20; }
628: my $arg=$token->[2]{$name};
629: $result=&mt($description).' <input name="'.&html_element_name($name).
630: '" type="text" value="'.$arg.'" size="'.$size.'" />';
631: return '<nobr>'.$result.'</nobr>';
632: }
633:
634: sub select_arg {
635: my ($description,$name,$list,$token) = @_;
636: my $result;
637: my $optionlist="";
638: my $selected=$token->[2]{$name};
639: foreach my $option (@$list) {
640: my ($text,$value);
641: if ( ref($option) eq 'ARRAY') {
642: $value='value="'.$$option[0].'"';
643: $text=$$option[1];
644: $option=$$option[0];
645: } else {
646: $text=$option;
647: $value='value="'.$option.'"';
648: }
649: if ( $selected eq $option ) {
650: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
651: } else {
652: $optionlist.="<option $value >$text</option>\n";
653: }
654: }
655: $result.='<nobr>'.$description.' <select name="'.
656: &html_element_name($name).'">
657: '.$optionlist.'
658: </select></nobr>';
659: return $result;
660: }
661:
662: sub select_or_text_arg {
663: my ($description,$name,$list,$token,$size) = @_;
664: my $result;
665: my $optionlist="";
666: my $found=0;
667: my $selected=$token->[2]{$name};
668: foreach my $option (@$list) {
669: my ($text,$value);
670: if ( ref($option) eq 'ARRAY') {
671: $value='value="'.$$option[0].'"';
672: $text=$$option[1];
673: $option=$$option[0];
674: } else {
675: $text=$option;
676: $value='value="'.$option.'"';
677: }
678: if ( $selected eq $option ) {
679: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
680: $found=1;
681: } else {
682: $optionlist.="<option $value>$text</option>\n";
683: }
684: }
685: $optionlist.="<option value=\"TYPEDINVALUE\"".
686: ((!$found)?' selected="selected"':'').
687: ">".&mt('Type-in value')."</option>\n";
688: #
689: my $element=&html_element_name($name);
690: my $selectelement='select_list_'.$element;
691: my $typeinelement='type_in_'.$element;
692: my $typeinvalue=($found?'':$selected);
693: #
694: my $hiddenvalue='this.form.'.$element.'.value';
695: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
696: my $selectedvalue='this.form.'.$selectelement.
697: '.options['.$selectedindex.'].value';
698: my $typedinvalue='this.form.'.$typeinelement.'.value';
699: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
700: $description=&mt($description);
701: #
702: return (<<ENDSELECTORTYPE);
703: <nobr>
704: $description
705: <select name="$selectelement"
706: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
707: $optionlist
708: </select>
709: <input type="text" size="$size" name="$typeinelement"
710: value="$typeinvalue"
711: onChange="$hiddenvalue=$typedinvalue;"
712: onFocus="$selectedindex=$selecttypeinindex-1;" />
713: <input type="hidden" name="$element" value="$selected" />
714: </nobr>
715: ENDSELECTORTYPE
716: }
717:
718: #----------------------------------------------------- image coordinates
719: # single image coordinates, x, y
720: sub entercoords {
721: my ($idx,$idy,$mode,$width,$height) = @_;
722: unless ($Apache::edit::bgimgsrc) { return ''; }
723: if ($idx) { $idx.='_'; }
724: if ($idy) { $idy.='_'; }
725: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
726: my $form = 'lonhomework';
727: my $element;
728: if (! defined($mode) || $mode eq 'attribute') {
729: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
730: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
731: $element = &Apache::lonnet::escape('homework_edit_'.
732: $Apache::lonxml::curdepth);
733: }
734: my $id=$Apache::lonxml::curdepth;
735: my %data=("imagechoice.$id.type" =>'point',
736: "imagechoice.$id.formname" =>$form,
737: "imagechoice.$id.formx" =>"$idx$element",
738: "imagechoice.$id.formy" =>"$idy$element",
739: "imagechoice.$id.file" =>$bgfile,
740: "imagechoice.$id.formcoord" =>$element);
741: if ($height) {
742: $data{"imagechoice.$id.formheight"}=$height.'_'.
743: $Apache::edit::bgimgsrccurdepth;
744: }
745: if ($width) {
746: $data{"imagechoice.$id.formwidth"}=$width.'_'.
747: $Apache::edit::bgimgsrccurdepth;
748: }
749: &Apache::lonnet::appenv(%data);
750: my $text="Click Coordinates";
751: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
752: return $result;
753: }
754:
755: # coordinates (x1,y1)-(x2,y2)...
756: # mode can be either box, or polygon
757: sub entercoord {
758: my ($idx,$mode,$width,$height,$type) = @_;
759: unless ($Apache::edit::bgimgsrc) { return ''; }
760: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
761: my $form = 'lonhomework';
762: my $element;
763: if (! defined($mode) || $mode eq 'attribute') {
764: $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
765: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
766: $element = &Apache::lonnet::escape('homework_edit_'.
767: $Apache::lonxml::curdepth);
768: }
769: my $id=$Apache::lonxml::curdepth;
770: my %data=("imagechoice.$id.type" =>$type,
771: "imagechoice.$id.formname" =>$form,
772: "imagechoice.$id.file" =>$bgfile,
773: "imagechoice.$id.formcoord" =>$element);
774: if ($height) {
775: $data{"imagechoice.$id.formheight"}=$height.'_'.
776: $Apache::edit::bgimgsrccurdepth;
777: }
778: if ($width) {
779: $data{"imagechoice.$id.formwidth"}=$width.'_'.
780: $Apache::edit::bgimgsrccurdepth;
781: }
782: &Apache::lonnet::appenv(%data);
783: my $text="Enter Coordinates";
784: if ($type eq 'polygon') { $text='Create Polygon Data'; }
785: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
786: return $result;
787: }
788:
789: sub deletecoorddata {
790: &Apache::lonnet::delenv("imagechoice\\.");
791: }
792:
793: #----------------------------------------------------- browse
794: sub browse {
795: # insert a link to call up the filesystem browser (lonindexer)
796: my ($id, $mode, $titleid) = @_;
797: my $form = 'lonhomework';
798: my $element;
799: if (! defined($mode) || $mode eq 'attribute') {
800: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
801: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
802: $element = &Apache::lonnet::escape('homework_edit_'.
803: $Apache::lonxml::curdepth);
804: }
805: my $titleelement;
806: if ($titleid) {
807: $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
808: }
809: my $result = <<"ENDBUTTON";
810: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
811: ENDBUTTON
812: return $result;
813: }
814:
815: #----------------------------------------------------- browse
816: sub search {
817: # insert a link to call up the filesystem browser (lonindexer)
818: my ($id, $mode, $titleid) = @_;
819: my $form = 'lonhomework';
820: my $element;
821: if (! defined($mode) || $mode eq 'attribute') {
822: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
823: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
824: $element = &Apache::lonnet::escape('homework_edit_'.
825: $Apache::lonxml::curdepth);
826: }
827: my $titleelement;
828: if ($titleid) {
829: $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
830: }
831: my $result = <<"ENDBUTTON";
832: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
833: ENDBUTTON
834: return $result;
835: }
836:
837:
838: 1;
839: __END__
840:
841: =head1 NAME
842:
843: Apache::edit - edit mode helpers
844:
845: =head1 SYNOPSIS
846:
847: Invoked by many homework and xml related modules.
848:
849: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
850:
851: =head1 INTRODUCTION
852:
853: This module outputs HTML syntax helpful for the rendering of edit
854: mode interfaces.
855:
856: This is part of the LearningOnline Network with CAPA project
857: described at http://www.lon-capa.org.
858:
859: =head1 HANDLER SUBROUTINE
860:
861: There is no handler subroutine.
862:
863: =head1 OTHER SUBROUTINES
864:
865: =over 4
866:
867: =item *
868:
869: initialize_edit() : initialize edit (set colordepth to zero)
870:
871: =item *
872:
873: tag_start($target,$token,$description) : provide deletion and insertion lists
874: for the manipulation of a start tag; return a scalar string
875:
876: =item *
877:
878: tag_end($target,$token,$description) : ending syntax corresponding to
879: &tag_start. return a scalar string.
880:
881: =item *
882:
883: start_table($token) : start table; update colordepth; return scalar string.
884:
885: =item *
886:
887: end_table() : reduce color depth; end table; return scalar string
888:
889: =item *
890:
891: start_spanning_row() : start a new table row spanning the 'edit' environment.
892:
893: =item *
894:
895: start_row() : start a new table row and element.
896:
897: =item *
898:
899: end_row() : end current table element and row.
900:
901: =item *
902:
903: movebuttons($target,$token) : move-up and move-down buttons; return scalar
904: string
905:
906: =item *
907:
908: deletelist($target,$token) : provide a yes option in an HTML select element;
909: return scalar string
910:
911: =item *
912:
913: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
914: $style) : respond to a user delete request by passing relevant stack
915: and array information to various rendering functions; return a scalar string
916:
917: =item *
918:
919: get_insert_list($token) : provide an insertion list based on possibilities
920: from lonxml; return a scalar string
921:
922: =item *
923:
924: insertlist($target,$token) : api that uses get_insert_list;
925: return a scalar string
926:
927: =item *
928:
929: handleinsert($token) : provide an insertion list based on possibilities
930: from lonxml; return a scalar string
931:
932: =item *
933:
934: get_insert_list($token) : provide an insertion list based on possibilities
935: from lonxml; return a scalar string
936:
937: =item *
938: browse($elementname) : provide a link which will open up the filesystem
939: browser (lonindexer) and, once a file is selected, place the result in
940: the form element $elementname.
941:
942: =item *
943: search($elementname) : provide a link which will open up the filesystem
944: searcher (lonsearchcat) and, once a file is selected, place the result in
945: the form element $elementname.
946:
947: =item *
948: editline(tag,data,description,size): Provide a <input type="text" ../> for
949: single-line text entry. This is to be used for text enclosed by tags, not
950: arguements/parameters associated with a tag.
951:
952: =back
953:
954: incomplete...
955:
956: =cut
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