1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: #
4: # $Id: edit.pm,v 1.104 2007/01/29 23:51:19 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: use lib '/home/httpd/lib/perl/';
36: use LONCAPA;
37:
38:
39: # Global Vars
40: # default list of colors to use in editing
41: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
42: # depth of nesting of edit
43: $Apache::edit::colordepth=0;
44: @Apache::edit::inserttag=();
45: # image-type responses: active background image and curdepth at definition
46: $Apache::edit::bgimgsrc='';
47: $Apache::edit::bgimgsrccurdepth='';
48:
49: sub initialize_edit {
50: $Apache::edit::colordepth=0;
51: @Apache::edit::inserttag=();
52: }
53:
54: sub tag_start {
55: my ($target,$token,$description) = @_;
56: my $result='';
57: if ($target eq "edit") {
58: my $tag=$token->[1];
59: if (!$description) {
60: $description=&Apache::lonxml::description($token);
61: if (!$description) { $description="<$tag>"; }
62: }
63: $result.= &start_table($token)."<tr><td>$description</td>
64: <td>Delete".
65: &deletelist($target,$token)
66: ."</td>
67: <td>".
68: &insertlist($target,$token);
69: #<td>".
70: # &movebuttons($target,$token).
71: # "</tr><tr><td colspan=\"3\">\n";
72: my @help = Apache::lonxml::helpinfo($token);
73: if ($help[0]) {
74: $result .= '</td><td align="right" valign="top">' .
75: Apache::loncommon::help_open_topic(@help);
76: } else { $result .= "</td><td> "; }
77: $result .= &end_row().&start_spanning_row();
78: }
79: return $result;
80: }
81:
82: sub tag_end {
83: my ($target,$token,$description) = @_;
84: my $result='';
85: if ($target eq 'edit') {
86: $result.="</td></tr>".&end_table()."\n";
87: }
88: return $result;
89: }
90:
91: sub start_table {
92: my ($token)=@_;
93: my $tag = &Apache::lonxml::get_tag($token);
94:
95: my $color = $Apache::lonxml::insertlist{"$tag.color"};
96: &Apache::lonxml::debug(" $tag -- $color");
97: if (!defined($color)) {
98: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
99: }
100: $Apache::edit::colordepth++;
101: push(@Apache::edit::inserttag,$token->[1]);
102: my $result='<div align="right">';
103: $result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="5" cellpadding="3">';
104: return $result;
105: }
106:
107: sub end_table {
108: $Apache::edit::colordepth--;
109: my $result='</table></div>';
110: $result.='<div align="left"><table><tr><td>';
111:
112: my ($tagname,$closingtag);
113: if (defined($Apache::edit::inserttag[-2])) {
114: $tagname=$Apache::edit::inserttag[-2];
115: } else {$tagname='problem';}
116: if (defined($Apache::edit::inserttag[-1])) {
117: $closingtag=$Apache::edit::inserttag[-1];
118: }
119: $result.=&innerinsertlist('edit',$tagname,$closingtag).
120: "</td></tr></table></div>";
121: pop(@Apache::edit::inserttag);
122: return $result;
123: }
124:
125: sub start_spanning_row { return '<tr><td colspan="4" bgcolor="#DDDDDD">';}
126: sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
127: sub end_row { return '</td></tr>'; }
128:
129: sub movebuttons {
130: my ($target,$token) = @_;
131: my $result='<input type="submit" name="moveup.'.
132: $Apache::lonxml::curdepth.'" value="Move Up" />';
133: $result.='<input type="submit" name="movedown.'.
134: $Apache::lonxml::curdepth.'" value="Move Down" />';
135: return $result;
136: }
137:
138: sub deletelist {
139: my ($target,$token) = @_;
140: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
141: <option></option>
142: <option>Yes</option>
143: </select>";
144: return $result;
145: }
146:
147: sub handle_delete {
148: if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
149: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
150: my $result=0;
151: if ($space) {
152: my $sub1="$space\:\:delete_$token->[1]";
153: {
154: no strict 'refs';
155: if (defined &$sub1) {
156: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
157: }
158: }
159: }
160: if (!$result) {
161: my $endtag='/'.$token->[1];
162: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style);
163: $$parser['-1']->get_token();
164: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
165: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
166: }
167: return 1;
168: }
169:
170: sub get_insert_list {
171: my ($tagname) = @_;
172: my $result='';
173: my @tags= ();
174: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
175: if ($Apache::lonxml::insertlist{"$tagname.which"}) {
176: push (@tags, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
177: }
178: foreach my $namespace (@Apache::lonxml::namespace) {
179: if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
180: push (@tags, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
181: }
182: }
183: if (@tags) {
184: my %options;
185: foreach my $tag (@tags) {
186: my $descrip=$Apache::lonxml::insertlist{"$tag.description"};
187: my $tagnum =$Apache::lonxml::insertlist{"$tag.num"};
188: $options{$descrip} ="<option value=\"$tagnum\">".
189: $descrip."</option>\n";
190: }
191: foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
192: if ($result) { $result='<option selected="selected"></option>'.$result; }
193: }
194: return $result;
195: }
196:
197: sub insertlist {
198: my ($target,$token) = @_;
199: return &innerinsertlist($target,$token->[1]);
200: }
201:
202: sub innerinsertlist {
203: my ($target,$tagname,$closingtag) = @_;
204: my $result;
205: my $after='';
206: if ($closingtag) {
207: $after='_after_'.$closingtag;
208: }
209: if ($target eq 'edit') {
210: my $optionlist= &get_insert_list($tagname);
211: if ($optionlist) {
212: $result = "Insert:
213: <select name=\"insert$after\_$Apache::lonxml::curdepth\">
214: $optionlist
215: </select>"
216: } else {
217: $result=" ";
218: }
219: }
220: return $result;
221: }
222:
223: sub handle_insert {
224: if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
225: my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"};
226: return &do_insert($tagnum);
227: }
228:
229: sub handle_insertafter {
230: my $tagname=shift;
231: if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '') {
232: return '';
233: }
234: my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
235: return &do_insert($tagnum);
236: }
237:
238: sub do_insert {
239: my ($tagnum) = @_;
240: my $result;
241:
242: my $newtag = $Apache::lonxml::insertlist{"$tagnum.tag"};
243: my $func = $Apache::lonxml::insertlist{"$newtag.function"};
244: if ($func eq 'default') {
245: my $namespace;
246: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
247: $result.="\n<$newtag>\n</$newtag>";
248: } else {
249: if (defined(&$func)) {
250: {
251: no strict 'refs';
252: $result.=&$func();
253: }
254: } else {
255: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined. ($tagnum)");
256: }
257: }
258: return $result;
259: }
260:
261: sub insert_img {
262: return '
263: <img />';
264: }
265:
266: sub insert_responseparam {
267: return '
268: <responseparam />';
269: }
270:
271: sub insert_parameter {
272: return '
273: <parameter />';
274: }
275:
276: sub insert_formularesponse {
277: return '
278: <formularesponse answer="" samples="">
279: <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
280: <textline size="25"/>
281: <hintgroup>
282: <startouttext /><endouttext />
283: </hintgroup>
284: </formularesponse>';
285: }
286:
287: sub insert_numericalresponse {
288: return '
289: <numericalresponse answer="">
290: <responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
291: <responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
292: <textline />
293: <hintgroup>
294: <startouttext /><endouttext />
295: </hintgroup>
296: </numericalresponse>';
297: }
298:
299: sub insert_customresponse {
300: return '
301: <customresponse>
302: <answer type="loncapa/perl">
303: </answer>
304: <textline />
305: <hintgroup>
306: <startouttext /><endouttext />
307: </hintgroup>
308: </customresponse>';
309: }
310:
311: sub insert_customresponse_answer {
312: return '
313: <answer type="loncapa/perl">
314: </answer>
315: ';
316: }
317:
318: sub insert_stringresponse {
319: return '
320: <stringresponse answer="" type="">
321: <textline />
322: <hintgroup>
323: <startouttext /><endouttext />
324: </hintgroup>
325: </stringresponse>';
326: }
327:
328: sub insert_essayresponse {
329: return '
330: <essayresponse>
331: <textfield></textfield>
332: </essayresponse>';
333: }
334:
335: sub insert_imageresponse {
336: return '
337: <imageresponse max="1">
338: <foilgroup>
339: <foil>
340: </foil>
341: </foilgroup>
342: <hintgroup>
343: <startouttext /><endouttext />
344: </hintgroup>
345: </imageresponse>';
346: }
347:
348: sub insert_optionresponse {
349: return '
350: <optionresponse max="10">
351: <foilgroup options="">
352: <foil>
353: <startouttext /><endouttext />
354: </foil>
355: </foilgroup>
356: <hintgroup>
357: <startouttext /><endouttext />
358: </hintgroup>
359: </optionresponse>';
360: }
361:
362: sub insert_organicresponse {
363: return '
364: <organicresponse>
365: <textline />
366: <hintgroup>
367: <startouttext /><endouttext />
368: </hintgroup>
369: </organicresponse>';
370: }
371:
372: sub insert_organicstructure {
373: return '
374: <organicstructure />
375: ';
376: }
377:
378: sub insert_radiobuttonresponse {
379: return '
380: <radiobuttonresponse max="10">
381: <foilgroup>
382: <foil>
383: <startouttext /><endouttext />
384: </foil>
385: </foilgroup>
386: <hintgroup>
387: <startouttext /><endouttext />
388: </hintgroup>
389: </radiobuttonresponse>';
390: }
391:
392: sub insert_reactionresponse {
393: return '
394: <reactionresponse>
395: <textline />
396: <hintgroup>
397: <startouttext /><endouttext />
398: </hintgroup>
399: </reactionresponse>';
400: }
401:
402: sub insert_rankresponse {
403: return '
404: <rankresponse max="10">
405: <foilgroup options="">
406: <foil>
407: <startouttext /><endouttext />
408: </foil>
409: </foilgroup>
410: <hintgroup>
411: <startouttext /><endouttext />
412: </hintgroup>
413: </rankresponse>';
414: }
415:
416: sub insert_matchresponse {
417: return '
418: <matchresponse max="10">
419: <foilgroup options="">
420: <itemgroup>
421: </itemgroup>
422: <foil>
423: <startouttext /><endouttext />
424: </foil>
425: </foilgroup>
426: <hintgroup>
427: <startouttext /><endouttext />
428: </hintgroup>
429: </matchresponse>';
430: }
431:
432: sub insert_displayduedate { return '<displayduedate />'; }
433: sub insert_displaytitle { return '<displaytitle />'; }
434: sub insert_hintpart {
435: return '
436: <hintpart on="default">
437: <startouttext/><endouttext />
438: </hintpart>';
439: }
440:
441: sub insert_hintgroup {
442: return '
443: <hintgroup>
444: <startouttext /><endouttext />
445: </hintgroup>';
446: }
447:
448: sub insert_numericalhint {
449: return '
450: <numericalhint>
451: </numericalhint>';
452: }
453:
454: sub insert_stringhint {
455: return '
456: <stringhint>
457: </stringhint>';
458: }
459:
460: sub insert_formulahint {
461: return '
462: <formulahint>
463: </formulahint>';
464: }
465:
466: sub insert_radiobuttonhint {
467: return '
468: <radiobuttonhint>
469: </radiobuttonhint>';
470: }
471:
472: sub insert_optionhint {
473: return '
474: <optionhint>
475: </optionhint>';
476: }
477:
478: sub insert_startouttext {
479: return "<startouttext /><endouttext />";
480: }
481:
482: sub insert_script {
483: return "\n<script type=\"loncapa/perl\"></script>";
484: }
485:
486: sub js_change_detection {
487: my $unsaved=&mt("There are unsaved changes");
488: return (<<SCRIPT);
489: <script type="text/javascript">
490: var clean = true;
491: var is_submit = false;
492: var still_ask = false;
493: function compareForm(event_) {
494: if (!event_ && window.event) {
495: event_ = window.event;
496: }
497: if ((!is_submit || (is_submit && still_ask)) && !clean) {
498: still_ask = false;
499: is_submit = false;
500: event_.returnValue = "$unsaved";
501: return "$unsaved";
502: }
503: }
504: function unClean() {
505: clean=false;
506: }
507: window.onbeforeunload = compareForm;
508: </script>
509: SCRIPT
510: }
511:
512: sub form_change_detection {
513: return ' onsubmit="is_submit=true;" ';
514: }
515:
516: sub element_change_detection {
517: return ' onchange="unClean();" ';
518: }
519:
520: sub submit_ask_anyway {
521: return ' onclick="still_ask=true;" ';
522: }
523:
524: sub textarea_sizes {
525: my ($data)=@_;
526: my $count=0;
527: my $maxlength=-1;
528: foreach (split ("\n", $$data)) {
529: $count+=int(length($_)/79);
530: $count++;
531: if (length($_) > $maxlength) { $maxlength = length($_); }
532: }
533: my $rows = $count;
534: my $cols = $maxlength;
535: return ($rows,$cols);
536: }
537:
538: sub editline {
539: my ($tag,$data,$description,$size)=@_;
540: $data=&HTML::Entities::encode($data,'<>&"');
541: if ($description) { $description="<br />".$description."<br />"; }
542: my $change_code = &element_change_detection();
543: my $result = <<"END";
544: $description
545: <input type="text" name="homework_edit_$Apache::lonxml::curdepth"
546: value="$data" size="$size" $change_code />
547: END
548: return $result;
549: }
550:
551: sub editfield {
552: my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
553:
554: my ($rows,$cols)=&textarea_sizes(\$data);
555: if (&Apache::lonhtmlcommon::htmlareabrowser() &&
556: !&Apache::lonhtmlcommon::htmlareablocked()) {
557: $rows+=7; # make room for HTMLarea
558: $minheight+=7; # make room for HTMLarea
559: }
560: if ($cols > 80) { $cols = 80; }
561: if ($cols < $minwidth ) { $cols = $minwidth; }
562: if ($rows < $minheight) { $rows = $minheight; }
563: if ($description) { $description="<br />".$description."<br />"; }
564: if ($usehtmlarea) {
565: &Apache::lonhtmlcommon::add_htmlareafields('homework_edit_'.
566: $Apache::lonxml::curdepth);
567: }
568: return $description."\n".'<textarea style="width:100%" rows="'.$rows.
569: '" cols="'.$cols.'" name="homework_edit_'.
570: $Apache::lonxml::curdepth.'" id="homework_edit_'.
571: $Apache::lonxml::curdepth.'" '.&element_change_detection().'>'.
572: &HTML::Entities::encode($data,'<>&"').'</textarea>'.
573: ($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
574: 'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
575: }
576:
577: sub modifiedfield {
578: my ($endtag,$parser) = @_;
579: my $result;
580: # foreach my $envkey (sort keys %env) {
581: # &Apache::lonxml::debug("$envkey ---- $env{$envkey}");
582: # }
583: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
584: # &Apache::lonxml::debug($env{"form.homework_edit_$Apache::lonxml::curdepth"});
585: $result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
586: my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
587: # textareas throw away intial \n
588: if ($bodytext=~/^\n/) { $result="\n".$result; }
589: return $result;
590: }
591:
592: # Returns a 1 if the token has been modified and you should rebuild the tag
593: # side-effects, will modify the $token if new values are found
594: sub get_new_args {
595: my ($token,$parstack,$safeeval,@args)=@_;
596: my $rebuild=0;
597: foreach my $arg (@args) {
598: #just want the string that it was set to
599: my $value=$token->[2]->{$arg};
600: my $element=&html_element_name($arg);
601: my $newvalue=$env{"form.$element"};
602: &Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
603: if (defined($newvalue) && $value ne $newvalue) {
604: if (ref($newvalue) eq 'ARRAY') {
605: $token->[2]->{$arg}=join(',',@$newvalue);
606: } else {
607: $token->[2]->{$arg}=$newvalue;
608: }
609: $rebuild=1;
610: } elsif (!defined($newvalue) && defined($value)) {
611: delete($token->[2]->{$arg});
612: $rebuild=1;
613: }
614: }
615: return $rebuild;
616: }
617:
618: # looks for /> on start tags
619: sub rebuild_tag {
620: my ($token) = @_;
621: my $result;
622: if ($token->[0] eq 'S') {
623: $result = '<'.$token->[1];
624: while (my ($key,$val)= each(%{$token->[2]})) {
625: $val=~s:^\s+|\s+$::g;
626: $val=~s:"::g; #"
627: &Apache::lonxml::debug("setting :$key: to :$val:");
628: $result.=' '.$key.'="'.$val.'"';
629: }
630: if ($token->[4] =~ m:/>$:) {
631: $result.=' />';
632: } else {
633: $result.='>';
634: }
635: } elsif ( $token->[0] eq 'E' ) {
636: $result = '</'.$token->[1].'>';
637: }
638: return $result;
639: }
640:
641: sub html_element_name {
642: my ($name) = @_;
643: return $name.'_'.$Apache::lonxml::curdepth;
644: }
645:
646: sub hidden_arg {
647: my ($name,$token) = @_;
648: my $result;
649: my $arg=$token->[2]{$name};
650: $result='<input name="'.&html_element_name($name).
651: '" type="hidden" value="'.$arg.'" />';
652: return $result;
653: }
654:
655: sub checked_arg {
656: my ($description,$name,$list,$token) = @_;
657: my $result;
658: my $optionlist="";
659: my $allselected=$token->[2]{$name};
660: $result=&mt($description);
661: foreach my $option (@$list) {
662: my ($value,$text);
663: if ( ref($option) eq 'ARRAY') {
664: $value='value="'.$$option[0].'"';
665: $text=$$option[1];
666: $option=$$option[0];
667: } else {
668: $text=$option;
669: $value='value="'.$option.'"';
670: }
671: $result.="<nobr><label><input type='checkbox' $value name='".
672: &html_element_name($name)."'";
673: foreach my $selected (split(/,/,$allselected)) {
674: if ( $selected eq $option ) {
675: $result.=" checked='checked' ";
676: last;
677: }
678: }
679: $result.=&element_change_detection()." />$text</label></nobr>\n";
680: }
681: return $result;
682: }
683:
684: sub text_arg {
685: my ($description,$name,$token,$size) = @_;
686: my $result;
687: if (!defined $size) { $size=20; }
688: my $arg=$token->[2]{$name};
689: $result=&mt($description).' <input name="'.&html_element_name($name).
690: '" type="text" value="'.$arg.'" size="'.$size.'" '.
691: &element_change_detection().'/>';
692: return '<nobr>'.$result.'</nobr>';
693: }
694:
695: sub select_arg {
696: my ($description,$name,$list,$token) = @_;
697: my $result;
698: my $optionlist="";
699: my $selected=$token->[2]{$name};
700: foreach my $option (@$list) {
701: my ($text,$value);
702: if ( ref($option) eq 'ARRAY') {
703: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
704: $text=$$option[1];
705: $option=$$option[0];
706: } else {
707: $text=$option;
708: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
709: }
710: if ( $selected eq $option ) {
711: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
712: } else {
713: $optionlist.="<option $value >$text</option>\n";
714: }
715: }
716: $result.='<nobr>'.$description.' <select name="'.
717: &html_element_name($name).'" '.&element_change_detection().' >
718: '.$optionlist.'
719: </select></nobr>';
720: return $result;
721: }
722:
723: sub select_or_text_arg {
724: my ($description,$name,$list,$token,$size) = @_;
725: my $result;
726: my $optionlist="";
727: my $found=0;
728: my $selected=$token->[2]{$name};
729: foreach my $option (@$list) {
730: my ($text,$value);
731: if ( ref($option) eq 'ARRAY') {
732: $value='value="'.&HTML::Entities::encode($$option[0]).'"';
733: $text=$$option[1];
734: $option=$$option[0];
735: } else {
736: $text=$option;
737: $value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
738: }
739: if ( $selected eq $option ) {
740: $optionlist.="<option $value selected=\"selected\">$text</option>\n";
741: $found=1;
742: } else {
743: $optionlist.="<option $value>$text</option>\n";
744: }
745: }
746: $optionlist.="<option value=\"TYPEDINVALUE\"".
747: ((!$found)?' selected="selected"':'').
748: ">".&mt('Type-in value')."</option>\n";
749: #
750: my $change_code=&element_change_detection();
751: my $element=&html_element_name($name);
752: my $selectelement='select_list_'.$element;
753: my $typeinelement='type_in_'.$element;
754: my $typeinvalue=($found?'':$selected);
755: #
756: my $hiddenvalue='this.form.'.$element.'.value';
757: my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
758: my $selectedvalue='this.form.'.$selectelement.
759: '.options['.$selectedindex.'].value';
760: my $typedinvalue='this.form.'.$typeinelement.'.value';
761: my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
762: $description=&mt($description);
763: #
764: return (<<ENDSELECTORTYPE);
765: <nobr>
766: $description
767: <select name="$selectelement"
768: onChange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
769: $optionlist
770: </select>
771: <input type="text" size="$size" name="$typeinelement"
772: value="$typeinvalue"
773: onChange="$hiddenvalue=$typedinvalue;"
774: onFocus="$selectedindex=$selecttypeinindex-1;" />
775: <input type="hidden" name="$element" value="$selected" $change_code />
776: </nobr>
777: ENDSELECTORTYPE
778: }
779:
780: #----------------------------------------------------- image coordinates
781: # single image coordinates, x, y
782: sub entercoords {
783: my ($idx,$idy,$mode,$width,$height) = @_;
784: unless ($Apache::edit::bgimgsrc) { return ''; }
785: if ($idx) { $idx.='_'; }
786: if ($idy) { $idy.='_'; }
787: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
788: my $form = 'lonhomework';
789: my $element;
790: if (! defined($mode) || $mode eq 'attribute') {
791: $element = &escape("$Apache::lonxml::curdepth");
792: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
793: $element = &escape('homework_edit_'.
794: $Apache::lonxml::curdepth);
795: }
796: my $id=$Apache::lonxml::curdepth;
797: my %data=("imagechoice.$id.type" =>'point',
798: "imagechoice.$id.formname" =>$form,
799: "imagechoice.$id.formx" =>"$idx$element",
800: "imagechoice.$id.formy" =>"$idy$element",
801: "imagechoice.$id.file" =>$bgfile,
802: "imagechoice.$id.formcoord" =>$element);
803: if ($height) {
804: $data{"imagechoice.$id.formheight"}=$height.'_'.
805: $Apache::edit::bgimgsrccurdepth;
806: }
807: if ($width) {
808: $data{"imagechoice.$id.formwidth"}=$width.'_'.
809: $Apache::edit::bgimgsrccurdepth;
810: }
811: &Apache::lonnet::appenv(%data);
812: my $text="Click Coordinates";
813: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
814: return $result;
815: }
816:
817: # coordinates (x1,y1)-(x2,y2)...
818: # mode can be either box, or polygon
819: sub entercoord {
820: my ($idx,$mode,$width,$height,$type) = @_;
821: unless ($Apache::edit::bgimgsrc) { return ''; }
822: my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
823: my $form = 'lonhomework';
824: my $element;
825: if (! defined($mode) || $mode eq 'attribute') {
826: $element = &escape("$idx\_$Apache::lonxml::curdepth");
827: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
828: $element = &escape('homework_edit_'.
829: $Apache::lonxml::curdepth);
830: }
831: my $id=$Apache::lonxml::curdepth;
832: my %data=("imagechoice.$id.type" =>$type,
833: "imagechoice.$id.formname" =>$form,
834: "imagechoice.$id.file" =>$bgfile,
835: "imagechoice.$id.formcoord" =>$element);
836: if ($height) {
837: $data{"imagechoice.$id.formheight"}=$height.'_'.
838: $Apache::edit::bgimgsrccurdepth;
839: }
840: if ($width) {
841: $data{"imagechoice.$id.formwidth"}=$width.'_'.
842: $Apache::edit::bgimgsrccurdepth;
843: }
844: &Apache::lonnet::appenv(%data);
845: my $text="Enter Coordinates";
846: if ($type eq 'polygon') { $text='Create Polygon Data'; }
847: my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
848: return $result;
849: }
850:
851: sub deletecoorddata {
852: &Apache::lonnet::delenv("imagechoice\\.");
853: }
854:
855: #----------------------------------------------------- browse
856: sub browse {
857: # insert a link to call up the filesystem browser (lonindexer)
858: my ($id, $mode, $titleid) = @_;
859: my $form = 'lonhomework';
860: my $element;
861: if (! defined($mode) || $mode eq 'attribute') {
862: $element = &escape("$id\_$Apache::lonxml::curdepth");
863: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
864: $element = &escape('homework_edit_'.
865: $Apache::lonxml::curdepth);
866: }
867: my $titleelement;
868: if ($titleid) {
869: $titleelement=",'','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
870: }
871: my $result = <<"ENDBUTTON";
872: <a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
873: ENDBUTTON
874: return $result;
875: }
876:
877: #----------------------------------------------------- browse
878: sub search {
879: # insert a link to call up the filesystem browser (lonindexer)
880: my ($id, $mode, $titleid) = @_;
881: my $form = 'lonhomework';
882: my $element;
883: if (! defined($mode) || $mode eq 'attribute') {
884: $element = &escape("$id\_$Apache::lonxml::curdepth");
885: } elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
886: $element = &escape('homework_edit_'.
887: $Apache::lonxml::curdepth);
888: }
889: my $titleelement;
890: if ($titleid) {
891: $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
892: }
893: my $result = <<"ENDBUTTON";
894: <a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
895: ENDBUTTON
896: return $result;
897: }
898:
899:
900: 1;
901: __END__
902:
903: =head1 NAME
904:
905: Apache::edit - edit mode helpers
906:
907: =head1 SYNOPSIS
908:
909: Invoked by many homework and xml related modules.
910:
911: &Apache::edit::SUBROUTINENAME(ARGUMENTS);
912:
913: =head1 INTRODUCTION
914:
915: This module outputs HTML syntax helpful for the rendering of edit
916: mode interfaces.
917:
918: This is part of the LearningOnline Network with CAPA project
919: described at http://www.lon-capa.org.
920:
921: =head1 HANDLER SUBROUTINE
922:
923: There is no handler subroutine.
924:
925: =head1 OTHER SUBROUTINES
926:
927: =over 4
928:
929: =item *
930:
931: initialize_edit() : initialize edit (set colordepth to zero)
932:
933: =item *
934:
935: tag_start($target,$token,$description) : provide deletion and insertion lists
936: for the manipulation of a start tag; return a scalar string
937:
938: =item *
939:
940: tag_end($target,$token,$description) : ending syntax corresponding to
941: &tag_start. return a scalar string.
942:
943: =item *
944:
945: start_table($token) : start table; update colordepth; return scalar string.
946:
947: =item *
948:
949: end_table() : reduce color depth; end table; return scalar string
950:
951: =item *
952:
953: start_spanning_row() : start a new table row spanning the 'edit' environment.
954:
955: =item *
956:
957: start_row() : start a new table row and element.
958:
959: =item *
960:
961: end_row() : end current table element and row.
962:
963: =item *
964:
965: movebuttons($target,$token) : move-up and move-down buttons; return scalar
966: string
967:
968: =item *
969:
970: deletelist($target,$token) : provide a yes option in an HTML select element;
971: return scalar string
972:
973: =item *
974:
975: handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
976: $style) : respond to a user delete request by passing relevant stack
977: and array information to various rendering functions; return a scalar string
978:
979: =item *
980:
981: get_insert_list($token) : provide an insertion list based on possibilities
982: from lonxml; return a scalar string
983:
984: =item *
985:
986: insertlist($target,$token) : api that uses get_insert_list;
987: return a scalar string
988:
989: =item *
990:
991: handleinsert($token) : provide an insertion list based on possibilities
992: from lonxml; return a scalar string
993:
994: =item *
995:
996: get_insert_list($token) : provide an insertion list based on possibilities
997: from lonxml; return a scalar string
998:
999: =item *
1000: browse($elementname) : provide a link which will open up the filesystem
1001: browser (lonindexer) and, once a file is selected, place the result in
1002: the form element $elementname.
1003:
1004: =item *
1005: search($elementname) : provide a link which will open up the filesystem
1006: searcher (lonsearchcat) and, once a file is selected, place the result in
1007: the form element $elementname.
1008:
1009: =item *
1010: editline(tag,data,description,size): Provide a <input type="text" ../> for
1011: single-line text entry. This is to be used for text enclosed by tags, not
1012: arguements/parameters associated with a tag.
1013:
1014: =back
1015:
1016: incomplete...
1017:
1018: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to edit.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework