1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.84.2.1 2004/08/19 21:03:23 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::edit;
30:
31: use strict;
32: use Apache::lonnet();
33: use HTML::Entities();
34: use Apache::lonlocal;
35:
36: # Global Vars
37: # default list of colors to use in editing
38: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
39: # depth of nesting of edit
40: $Apache::edit::colordepth=0;
41: @Apache::edit::inserttag=();
42: # image-type responses: active background image and curdepth at definition
43: $Apache::edit::bgimgsrc='';
44: $Apache::edit::bgimgsrccurdepth='';
45:
46: sub initialize_edit {
47: $Apache::edit::colordepth=0;
48: @Apache::edit::inserttag=();
49: }
50:
51: sub tag_start {
52: my ($target,$token,$description) = @_;
53: my $result='';
54: if ($target eq "edit") {
55: my $tag=$token->[1];
56: if (!$description) {
57: $description=&Apache::lonxml::description($token);
58: if (!$description) { $description="<$tag>"; }
59: }
60: $result.= &start_table($token)."<tr><td>$description</td>
61: <td>Delete".
62: &deletelist($target,$token)
63: ."</td>
64: <td>".
65: &insertlist($target,$token);
66: #<td>".
67: # &movebuttons($target,$token).
68: # "</tr><tr><td colspan=\"3\">\n";
69: my @help = Apache::lonxml::helpinfo($token);
70: if ($help[0]) {
71: $result .= '<td align="right" valign="top">' .
72: Apache::loncommon::help_open_topic(@help) .
73: '</td>';
74: } else { $result .= "<td> </td>"; }
75: $result .= &end_row().&start_spanning_row();
76: }
77: return $result;
78: }
79:
80: sub tag_end {
81: my ($target,$token,$description) = @_;
82: my $result='';
83: if ($target eq 'edit') {
84: $result.="</td></tr>".&end_table()."\n";
85: }
86: return $result;
87: }
88:
89: sub start_table {
90: my ($token)=@_;
91: my $tag = $token->[1];
92: my $tagnum;
93: foreach my $namespace (reverse @Apache::lonxml::namespace) {
94: my $testtag=$namespace.'::'.$tag;
95: $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
96: if (defined($tagnum)) { last; }
97: }
98: if (!defined ($tagnum)) {$tagnum=$Apache::lonxml::insertlist{"$tag.num"};}
99: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
100: if (!defined($color)) {
101: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
102: }
103: $Apache::edit::colordepth++;
104: push(@Apache::edit::inserttag,$token->[1]);
105: my $result='<div align="right">';
106: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
107: return $result;
108: }
109:
110: sub end_table {
111: $Apache::edit::colordepth--;
112: my $result='</table></div>';
113: $result.="<table><tr><td>";
114:
115: my ($tagname,$closingtag);
116: if (defined($Apache::edit::inserttag[-2])) {
117: $tagname=$Apache::edit::inserttag[-2];
118: } else {$tagname='problem';}
119: if (defined($Apache::edit::inserttag[-1])) {
120: $closingtag=$Apache::edit::inserttag[-1];
121: }
122: $result.=&innerinsertlist('edit',$tagname,$closingtag).
123: "</td></tr></table>";
124: pop(@Apache::edit::inserttag);
125: return $result;
126: }
127:
128: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';}
129: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
130: sub end_row { return '</td></tr>'; }
131:
132: sub movebuttons {
133: my ($target,$token) = @_;
134: my $result='<input type="submit" name="moveup.'.
135: $Apache::lonxml::curdepth.'" value="Move Up" />';
136: $result.='<input type="submit" name="movedown.'.
137: $Apache::lonxml::curdepth.'" value="Move Down" />';
138: return $result;
139: }
140:
141: sub deletelist {
142: my ($target,$token) = @_;
143: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
144: <option></option>
145: <option>Yes</option>
146: </select>";
147: return $result;
148: }
149:
150: sub handle_delete {
151: if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
152: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
153: my $result=0;
154: if ($space) {
155: my $sub1="$space\:\:delete_$token->[1]";
156: {
157: no strict 'refs';
158: if (defined &$sub1) {
159: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
160: }
161: }
162: }
163: if (!$result) {
164: my $endtag='/'.$token->[1];
165: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
166: $$parser['-1']->get_token();
167: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
168: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
169: }
170: return 1;
171: }
172:
173: sub get_insert_list {
174: my ($tagname) = @_;
175: my $result='';
176: my @tagnums= ();
177: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
178: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
179: push (@tagnums, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
180: }
181: foreach my $namespace (@Apache::lonxml::namespace) {
182: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
183: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
184: }
185: }
186: if (@tagnums) {
187: my %options;
188: foreach my $tagnum (@tagnums) {
189: my $descrip=$Apache::lonxml::insertlist{"$tagnum.description"};
190: $options{$descrip} ="<option value=\"$tagnum\">".
191: $descrip."</option>\n";
192: }
193: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
194: if ($result) { $result='<option selected="on"></option>'.$result; }
195: }
196: return $result;
197: }
198:
199: sub insertlist {
200: my ($target,$token) = @_;
201: return &innerinsertlist($target,$token->[1]);
202: }
203:
204: sub innerinsertlist {
205: my ($target,$tagname,$closingtag) = @_;
206: my $result;
207: my $after='';
208: if ($closingtag) {
209: $after='_after_'.$closingtag;
210: }
211: if ($target eq 'edit') {
212: my $optionlist= &get_insert_list($tagname);
213: if ($optionlist) {
214: $result = "Insert:
215: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
216: $optionlist
217: </select>"
218: } else {
219: $result=" ";
220: }
221: }
222: return $result;
223: }
224:
225: sub handle_insert {
226: if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
227: my $result;
228: my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
229: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
230: if ($func eq 'default') {
231: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
232: my $namespace;
233: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
234: $result.="\n<$newtag>\n</$newtag>";
235: } else {
236: if (defined(&$func)) {
237: {
238: no strict 'refs';
239: $result.=&$func();
240: }
241: } else {
242: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
243: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
244: }
245: }
246: return $result;
247: }
248:
249: sub handle_insertafter {
250: my $tagname=shift;
251: if ($ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '')
252: { return ''; }
253: my $result;
254: my $tagnum =$ENV{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
255: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
256: if ($func eq 'default') {
257: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
258: my $namespace;
259: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
260: $result.="\n<$newtag>\n</$newtag>";
261: } else {
262: if (defined(&$func)) {
263: {
264: no strict 'refs';
265: $result.=&$func();
266: }
267: } else {
268: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
269: &Apache::lonxml::error("Unable to insert (after) tag $newtag, $func was not defined. ($tagname $tagnum)");
270: }
271: }
272: return $result;
273: }
274:
275: sub insert_img {
276: return '
277: <img />';
278: }
279:
280: sub insert_responseparam {
281: return '
282: <responseparam />';
283: }
284:
285: sub insert_formularesponse {
286: return '
287: <formularesponse answer="" samples="">
288: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
289: <textline size="25"/>
290: <hintgroup>
291: <startouttext /><endouttext />
292: </hintgroup>
293: </formularesponse>';
294: }
295:
296: sub insert_numericalresponse {
297: return '
298: <numericalresponse answer="">
299: <textline />
300: <hintgroup>
301: <startouttext /><endouttext />
302: </hintgroup>
303: </numericalresponse>';
304: }
305:
306: sub insert_stringresponse {
307: return '
308: <stringresponse answer="" type="">
309: <textline />
310: <hintgroup>
311: <startouttext /><endouttext />
312: </hintgroup>
313: </stringresponse>';
314: }
315:
316: sub insert_essayresponse {
317: return '
318: <essayresponse>
319: <textfield></textfield>
320: </essayresponse>';
321: }
322:
323: sub insert_imageresponse {
324: return '
325: <imageresponse max="1">
326: <foilgroup>
327: </foilgroup>
328: <hintgroup>
329: <startouttext /><endouttext />
330: </hintgroup>
331: </imageresponse>';
332: }
333:
334: sub insert_optionresponse {
335: return '
336: <optionresponse max="10">
337: <foilgroup options="">
338: </foilgroup>
339: <hintgroup>
340: <startouttext /><endouttext />
341: </hintgroup>
342: </optionresponse>';
343: }
344:
345: sub insert_organicresponse {
346: return '
347: <organicresponse>
348: <textline />
349: <hintgroup>
350: <startouttext /><endouttext />
351: </hintgroup>
352: </organicresponse>';
353: }
354:
355: sub insert_organicstructure {
356: return '
357: <organicstructure />
358: ';
359: }
360:
361: sub insert_radiobuttonresponse {
362: return '
363: <radiobuttonresponse max="10">
364: <foilgroup>
365: </foilgroup>
366: <hintgroup>
367: <startouttext /><endouttext />
368: </hintgroup>
369: </radiobuttonresponse>';
370: }
371:
372: sub insert_reactionresponse {
373: return '
374: <reactionresponse>
375: <textline />
376: <hintgroup>
377: <startouttext /><endouttext />
378: </hintgroup>
379: </reactionresponse>';
380: }
381:
382: sub insert_rankresponse {
383: return '
384: <rankresponse max="10">
385: <foilgroup options="">
386: </foilgroup>
387: <hintgroup>
388: <startouttext /><endouttext />
389: </hintgroup>
390: </rankresponse>';
391: }
392:
393: sub insert_matchresponse {
394: return '
395: <matchresponse max="10">
396: <foilgroup options="">
397: <itemgroup>
398: </itemgroup>
399: </foilgroup>
400: <hintgroup>
401: <startouttext /><endouttext />
402: </hintgroup>
403: </matchresponse>';
404: }
405:
406: sub insert_displayduedate { return '<displayduedate />'; }
407: sub insert_displaytitle { return '<displaytitle />'; }
408: sub insert_hintpart {
409: return '
410: <hintpart on="default">
411: <startouttext/>
412: <endouttext />
413: </hintpart>';
414: }
415:
416: sub insert_hintgroup {
417: return '
418: <hintgroup>
419: <startouttext /><endouttext />
420: </hintgroup>';
421: }
422:
423: sub insert_numericalhint {
424: return '
425: <numericalhint>
426: </numericalhint>';
427: }
428:
429: sub insert_stringhint {
430: return '
431: <stringhint>
432: </stringhint>';
433: }
434:
435: sub insert_formulahint {
436: return '
437: <formulahint>
438: </formulahint>';
439: }
440:
441: sub insert_radiobuttonhint {
442: return '
443: <radiobuttonhint>
444: </radiobuttonhint>';
445: }
446:
447: sub insert_optionhint {
448: return '
449: <optionhint>
450: </optionhint>';
451: }
452:
453: sub insert_startouttext {
454: return "<startouttext /><endouttext />";
455: }
456:
457: sub insert_script {
458: return "\n<script type=\"loncapa/perl\"></script>";
459: }
460:
461: sub textarea_sizes {
462: my ($data)=@_;
463: my $count=0;
464: my $maxlength=-1;
465: foreach (split ("\n", $$data)) {
466: $count+=int(length($_)/79);
467: $count++;
468: if (length($_) > $maxlength) { $maxlength = length($_); }
469: }
470: my $rows = $count;
471: my $cols = $maxlength;
472: return ($rows,$cols);
473: }
474:
475: sub editline {
476: my ($tag,$data,$description,$size)=@_;
477: $data=&HTML::Entities::encode($data,'<>&"');
478: if ($description) { $description="<br />".$description."<br />"; }
479: my $result = <<"END";
480: $description
481: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
482: value="$data" size="$size" />
483: END
484: return $result;
485: }
486:
487: sub editfield {
488: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
489:
490: my ($rows,$cols)=&textarea_sizes(\$data);
491: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
492: !&Apache::lonhtmlcommon::htmlareablocked()) {
493: $rows+=7; # make room for HTMLarea
494: $minheight+=7; # make room for HTMLarea
495: }
496: if ($cols > 80) { $cols = 80; }
497: if ($cols < $minwidth ) { $cols = $minwidth; }
498: if ($rows < $minheight) { $rows = $minheight; }
499: if ($description) { $description="<br />".$description."<br />"; }
500: if ($usehtmlarea) {
501: push @Apache::lonxml::htmlareafields,'homework_edit_'.
502: $Apache::lonxml::curdepth;
503: }
504: return $description."\n".' <textarea rows="'.$rows.
505: '" cols="'.$cols.'" name="homework_edit_'.
506: $Apache::lonxml::curdepth.'" id="homework_edit_'.
507: $Apache::lonxml::curdepth.'">'.
508: &HTML::Entities::encode($data,'<>&"').'</textarea>'."\n";
509: }
510:
511: sub modifiedfield {
512: my ($endtag,$parser) = @_;
513: my $result;
514: # foreach my $envkey (sort keys %ENV) {
515: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
516: # }
517: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
518: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
519: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
520: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
521: # textareas throw away intial \n
522: if ($bodytext=~/^\n/) { $result="\n".$result; }
523: return $result;
524: }
525:
526: # Returns a 1 if the token has been modified and you should rebuild the tag
527: # side-effects, will modify the $token if new values are found
528: sub get_new_args {
529: my ($token,$parstack,$safeeval,@args)=@_;
530: my $rebuild=0;
531: foreach my $arg (@args) {
532: #just want the string that it was set to
533: my $value=$token->[2]->{$arg};
534: my $element=&html_element_name($arg);
535: my $newvalue=$ENV{"form.$element"};
536: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
537: if (defined($newvalue) && $value ne $newvalue) {
538: if (ref($newvalue) eq 'ARRAY') {
539: $token->[2]->{$arg}=join(',',@$newvalue);
540: } else {
541: $token->[2]->{$arg}=$newvalue;
542: }
543: $rebuild=1;
544: } elsif (!defined($newvalue) && defined($value)) {
545: delete($token->[2]->{$arg});
546: $rebuild=1;
547: }
548: }
549: return $rebuild;
550: }
551:
552: # looks for /> on start tags
553: sub rebuild_tag {
554: my ($token) = @_;
555: my $result;
556: if ($token->[0] eq 'S') {
557: $result = '<'.$token->[1];
558: while (my ($key,$val)= each(%{$token->[2]})) {
559: $val=~s:^\s+|\s+$::g;
560: $val=~s:"::g; #"
561: &Apache::lonxml::debug("setting :$key: to :$val:");
562: $result.=' '.$key.'="'.$val.'"';
563: }
564: if ($token->[4] =~ m:/>$:) {
565: $result.=' />';
566: } else {
567: $result.='>';
568: }
569: } elsif ( $token->[0] eq 'E' ) {
570: $result = '</'.$token->[1].'>';
571: }
572: return $result;
573: }
574:
575: sub html_element_name {
576: my ($name) = @_;
577: return $name.'_'.$Apache::lonxml::curdepth;
578: }
579:
580: sub hidden_arg {
581: my ($name,$token) = @_;
582: my $result;
583: my $arg=$token->[2]{$name};
584: $result='<input name="'.&html_element_name($name).
585: '" type="hidden" value="'.$arg.'" />';
586: return $result;
587: }
588:
589: sub checked_arg {
590: my ($description,$name,$list,$token) = @_;
591: my $result;
592: my $optionlist="";
593: my $allselected=$token->[2]{$name};
594: $result=&mt($description);
595: foreach my $option (@$list) {
596: my ($value,$text);
597: if ( ref($option) eq 'ARRAY') {
598: $value='value="'.$$option[0].'"';
599: $text=$$option[1];
600: $option=$$option[0];
601: } else {
602: $text=$option;
603: $value='value="'.$option.'"';
604: }
605: $result.="<nobr><input type='checkbox' $value name='".
606: &html_element_name($name)."'";
607: foreach my $selected (split(/,/,$allselected)) {
608: if ( $selected eq $option ) {
609: $result.=" checked='on' ";
610: last;
611: }
612: }
613: $result.=" />$text</nobr>\n";
614: }
615: return $result;
616: }
617:
618: sub text_arg {
619: my ($description,$name,$token,$size) = @_;
620: my $result;
621: if (!defined $size) { $size=20; }
622: my $arg=$token->[2]{$name};
623: $result=&mt($description).' <input name="'.&html_element_name($name).
624: '" type="text" value="'.$arg.'" size="'.$size.'" />';
625: return '<nobr>'.$result.'</nobr>';
626: }
627:
628: sub select_arg {
629: my ($description,$name,$list,$token) = @_;
630: my $result;
631: my $optionlist="";
632: my $selected=$token->[2]{$name};
633: foreach my $option (@$list) {
634: my ($text,$value);
635: if ( ref($option) eq 'ARRAY') {
636: $value='value="'.$$option[0].'"';
637: $text=$$option[1];
638: $option=$$option[0];
639: } else {
640: $text=$option;
641: $value='value="'.$option.'"';
642: }
643: if ( $selected eq $option ) {
644: $optionlist.="<option $value selected=\"on\">$text</option>\n";
645: } else {
646: $optionlist.="<option $value >$text</option>\n";
647: }
648: }
649: $result.='<nobr>'.$description.' <select name="'.
650: &html_element_name($name).'">
651: '.$optionlist.'
652: </select></nobr>';
653: return $result;
654: }
655:
656: sub select_or_text_arg {
657: my ($description,$name,$list,$token,$size) = @_;
658: my $result;
659: my $optionlist="";
660: my $found=0;
661: my $selected=$token->[2]{$name};
662: foreach my $option (@$list) {
663: my ($text,$value);
664: if ( ref($option) eq 'ARRAY') {
665: $value='value="'.$$option[0].'"';
666: $text=$$option[1];
667: $option=$$option[0];
668: } else {
669: $text=$option;
670: $value='value="'.$option.'"';
671: }
672: if ( $selected eq $option ) {
673: $optionlist.="<option $value selected=\"on\">$text</option>\n";
674: $found=1;
675: } else {
676: $optionlist.="<option $value>$text</option>\n";
677: }
678: }
679: $optionlist.="<option value=\"TYPEDINVALUE\"".
680: ((!$found)?' selected="on"':'').
681: ">".&mt('Type-in value')."</option>\n";
682: #
683: my $element=&html_element_name($name);
684: my $selectelement='select_list_'.$element;
685: my $typeinelement='type_in_'.$element;
686: my $typeinvalue=($found?'':$selected);
687: #
688: my $hiddenvalue='this.form.'.$element.'.value';
689: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
690: my $selectedvalue='this.form.'.$selectelement.
691: '.options['.$selectedindex.'].value';
692: my $typedinvalue='this.form.'.$typeinelement.'.value';
693: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
694: $description=&mt($description);
695: #
696: return (<<ENDSELECTORTYPE);
697: <nobr>
698: $description
699: <select name="$selectelement"
700: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
701: $optionlist
702: </select>
703: <input type="text" size="$size" name="$typeinelement"
704: value="$typeinvalue"
705: onChange="$hiddenvalue=$typedinvalue;"
706: onFocus="$selectedindex=$selecttypeinindex-1;" />
707: <input type="hidden" name="$element" value="$selected" />
708: </nobr>
709: ENDSELECTORTYPE
710: }
711:
712: #----------------------------------------------------- image coordinates
713: # single image coordinates, x, y
714: sub entercoords {
715: my ($idx,$idy,$mode,$width,$height) = @_;
716: unless ($Apache::edit::bgimgsrc) { return ''; }
717: if ($idx) { $idx.='_'; }
718: if ($idy) { $idy.='_'; }
719: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
720: my $form = 'lonhomework';
721: my $element;
722: if (! defined($mode) || $mode eq 'attribute') {
723: $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
724: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
725: $element = &Apache::lonnet::escape('homework_edit_'.
726: $Apache::lonxml::curdepth);
727: }
728: my $id=$Apache::lonxml::curdepth;
729: my %data=("imagechoice.$id.type" =>'point',
730: "imagechoice.$id.formname" =>$form,
731: "imagechoice.$id.formx" =>"$idx$element",
732: "imagechoice.$id.formy" =>"$idy$element",
733: "imagechoice.$id.file" =>$bgfile,
734: "imagechoice.$id.formcoord" =>$element);
735: if ($height) {
736: $data{"imagechoice.$id.formheight"}=$height.'_'.
737: $Apache::edit::bgimgsrccurdepth;
738: }
739: if ($width) {
740: $data{"imagechoice.$id.formwidth"}=$width.'_'.
741: $Apache::edit::bgimgsrccurdepth;
742: }
743: &Apache::lonnet::appenv(%data);
744: my $text="Click Coordinates";
745: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
746: return $result;
747: }
748:
749: # coordinates (x1,y1)-(x2,y2)...
750: # mode can be either box, or polygon
751: sub entercoord {
752: my ($idx,$mode,$width,$height,$type) = @_;
753: unless ($Apache::edit::bgimgsrc) { return ''; }
754: my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
755: my $form = 'lonhomework';
756: my $element;
757: if (! defined($mode) || $mode eq 'attribute') {
758: $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
759: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
760: $element = &Apache::lonnet::escape('homework_edit_'.
761: $Apache::lonxml::curdepth);
762: }
763: my $id=$Apache::lonxml::curdepth;
764: my %data=("imagechoice.$id.type" =>$type,
765: "imagechoice.$id.formname" =>$form,
766: "imagechoice.$id.file" =>$bgfile,
767: "imagechoice.$id.formcoord" =>$element);
768: if ($height) {
769: $data{"imagechoice.$id.formheight"}=$height.'_'.
770: $Apache::edit::bgimgsrccurdepth;
771: }
772: if ($width) {
773: $data{"imagechoice.$id.formwidth"}=$width.'_'.
774: $Apache::edit::bgimgsrccurdepth;
775: }
776: &Apache::lonnet::appenv(%data);
777: my $text="Enter Coordinates";
778: if ($type eq 'polygon') { $text='Create Polygon Data'; }
779: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
780: return $result;
781: }
782:
783: sub deletecoorddata {
784: &Apache::lonnet::delenv("imagechoice\\.");
785: }
786:
787: #----------------------------------------------------- browse
788: sub browse {
789: # insert a link to call up the filesystem browser (lonindexer)
790: my ($id, $mode, $titleid) = @_;
791: my $form = 'lonhomework';
792: my $element;
793: if (! defined($mode) || $mode eq 'attribute') {
794: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
795: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
796: $element = &Apache::lonnet::escape('homework_edit_'.
797: $Apache::lonxml::curdepth);
798: }
799: my $titleelement;
800: if ($titleid) {
801: $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
802: }
803: my $result = <<"ENDBUTTON";
804: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
805: ENDBUTTON
806: return $result;
807: }
808:
809: #----------------------------------------------------- browse
810: sub search {
811: # insert a link to call up the filesystem browser (lonindexer)
812: my ($id, $mode, $titleid) = @_;
813: my $form = 'lonhomework';
814: my $element;
815: if (! defined($mode) || $mode eq 'attribute') {
816: $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
817: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
818: $element = &Apache::lonnet::escape('homework_edit_'.
819: $Apache::lonxml::curdepth);
820: }
821: my $titleelement;
822: if ($titleid) {
823: $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
824: }
825: my $result = <<"ENDBUTTON";
826: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
827: ENDBUTTON
828: return $result;
829: }
830:
831:
832: 1;
833: __END__
834:
835: =head1 NAME
836:
837: Apache::edit - edit mode helpers
838:
839: =head1 SYNOPSIS
840:
841: Invoked by many homework and xml related modules.
842:
843: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
844:
845: =head1 INTRODUCTION
846:
847: This module outputs HTML syntax helpful for the rendering of edit
848: mode interfaces.
849:
850: This is part of the LearningOnline Network with CAPA project
851: described at http://www.lon-capa.org.
852:
853: =head1 HANDLER SUBROUTINE
854:
855: There is no handler subroutine.
856:
857: =head1 OTHER SUBROUTINES
858:
859: =over 4
860:
861: =item *
862:
863: initialize_edit() : initialize edit (set colordepth to zero)
864:
865: =item *
866:
867: tag_start($target,$token,$description) : provide deletion and insertion lists
868: for the manipulation of a start tag; return a scalar string
869:
870: =item *
871:
872: tag_end($target,$token,$description) : ending syntax corresponding to
873: &tag_start. return a scalar string.
874:
875: =item *
876:
877: start_table($token) : start table; update colordepth; return scalar string.
878:
879: =item *
880:
881: end_table() : reduce color depth; end table; return scalar string
882:
883: =item *
884:
885: start_spanning_row() : start a new table row spanning the 'edit' environment.
886:
887: =item *
888:
889: start_row() : start a new table row and element.
890:
891: =item *
892:
893: end_row() : end current table element and row.
894:
895: =item *
896:
897: movebuttons($target,$token) : move-up and move-down buttons; return scalar
898: string
899:
900: =item *
901:
902: deletelist($target,$token) : provide a yes option in an HTML select element;
903: return scalar string
904:
905: =item *
906:
907: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
908: $style) : respond to a user delete request by passing relevant stack
909: and array information to various rendering functions; return a scalar string
910:
911: =item *
912:
913: get_insert_list($token) : provide an insertion list based on possibilities
914: from lonxml; return a scalar string
915:
916: =item *
917:
918: insertlist($target,$token) : api that uses get_insert_list;
919: return a scalar string
920:
921: =item *
922:
923: handleinsert($token) : provide an insertion list based on possibilities
924: from lonxml; return a scalar string
925:
926: =item *
927:
928: get_insert_list($token) : provide an insertion list based on possibilities
929: from lonxml; return a scalar string
930:
931: =item *
932: browse($elementname) : provide a link which will open up the filesystem
933: browser (lonindexer) and, once a file is selected, place the result in
934: the form element $elementname.
935:
936: =item *
937: search($elementname) : provide a link which will open up the filesystem
938: searcher (lonsearchcat) and, once a file is selected, place the result in
939: the form element $elementname.
940:
941: =item *
942: editline(tag,data,description,size): Provide a <input type="text" ../> for
943: single-line text entry. This is to be used for text enclosed by tags, not
944: arguements/parameters associated with a tag.
945:
946: =back
947:
948: incomplete...
949:
950: =cut
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