1: # The LearningOnline Network with CAPA
2: # Routines to control the wishlist
3: #
4: # $Id: lonwishlist.pm,v 1.5 2010/08/17 12:32:58 wenzelju 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: =pod
30:
31: =head1 NAME
32:
33: Apache::lonwishlist - Wishlist-Module
34:
35: =head1 SYNOPSIS
36:
37: The wishlist offers a possibility to store links to resources from the resource-pool and external websites in a hierarchical list.
38: It is only available for user with access to the resource-pool. The list can be structured by folders.
39:
40: The wishlist-module uses the CPAN-module "Tree" for easily handling the directory-structure of the wishlist. Each node in the tree has an index to be referenced by.
41:
42: =cut
43:
44: package Apache::lonwishlist;
45:
46: use strict;
47: use Apache::Constants qw(:common);
48: use Apache::lonnet;
49: use Apache::loncommon();
50: use Apache::lonhtmlcommon;
51: use Apache::lonlocal;
52: use LONCAPA;
53: use Tree;
54:
55:
56: # Global variables
57: my $root;
58: my @childrenRt;
59: my %TreeHash;
60: my %TreeToHash;
61: my @allFolders;
62: my @allNodes;
63: my $indentConst = 20;
64:
65: =pod
66:
67: =head2 Routines for getting and putting the wishlist data from and accordingly to users data.
68:
69: =over 4
70:
71: =item * &getWishlist()
72:
73: Get the wishlist-data via lonnet::dump() and returns the got data in a hash.
74:
75:
76: =item * &putWishlist(wishlist)
77:
78: Parameter is a reference to a hash. Puts the wishlist-data contained in the given hash via lonnet::put() to user-data.
79:
80:
81: =item * &deleteWishlist()
82:
83: Deletes all entries from the user-data for wishlist. Do this before putting in new data.
84:
85:
86: =back
87:
88: =cut
89:
90:
91: # Read wishlist from user-data
92: sub getWishlist {
93: my %wishlist = &Apache::lonnet::dump('wishlist');
94: foreach my $i ( keys %wishlist) {
95: #File not found. This appears at the first time using the wishlist
96: #Create file and put 'root' into it
97: if ($i =~m/^error:No such file/) {
98: &Apache::lonnet::logthis($i.'! Create file by putting in the "root" of the directory tree.');
99: &Apache::lonnet::put('wishlist', {'root' => ''});
100: %wishlist = &Apache::lonnet::dump('wishlist');
101: }
102: elsif ($i =~ /^(con_lost|error|no_such_host)/i) {
103: &Apache::lonnet::logthis('ERROR while attempting to get wishlist: '.$i);
104: return 'error';
105: }
106: }
107:
108: # if we got no keys in hash returned by dump(), return error.
109: # wishlist will not be loaded, instead the user will be asked to try again later
110: if ((keys %wishlist) == 0) {
111: &Apache::lonnet::logthis('ERROR while attempting to get wishlist: no keys retrieved!');
112: return 'error';
113: }
114:
115: return %wishlist;
116: }
117:
118:
119: # Write wishlist to user-data
120: sub putWishlist {
121: my $wishlist = shift;
122: &Apache::lonnet::put('wishlist',$wishlist);
123: }
124:
125:
126: # Removes all existing entrys for wishlist in user-data
127: sub deleteWishlist {
128: my @wishlistkeys = &Apache::lonnet::getkeys('wishlist');
129: my %wishlist = &Apache::lonnet::del('wishlist',\@wishlistkeys);
130: }
131:
132:
133: =pod
134:
135: =head2 Routines for changing the directory struture of the wishlist.
136:
137: =over 4
138:
139: =item * &newEntry(title, path, note)
140:
141: Creates a new entry in the wishlist containing the given informations. Additionally saves the date of creation in the entry.
142:
143:
144: =item * &deleteEntries(marked)
145:
146: Parameter is a reference to an array containing the indices of all nodes that should be removed from the tree.
147:
148:
149: =item * &sortEntries(indexNode, at)
150:
151: Changes the position of a node given by indexNode within its siblings. New position is given by at.
152:
153:
154: =item * &moveEntries(indexNodesToMove, indexParent)
155:
156: Parameter is a reference to an array containing the indices of all nodes that should be moved. indexParent specifies the node that will become the new Parent for these nodes.
157:
158:
159: =item * &setNewTitle(nodeindex, newTitle)
160:
161: Sets the title for the node given by nodeindex to newTitle.
162:
163:
164: =item * &setNewPath(nodeindex, newPath)
165:
166: Sets the path for the node given by nodeindex to newPath.
167:
168:
169: =item * &setNewNote(nodeindex, newNote)
170:
171: Sets the note for the node given by nodeindex to newNote.
172:
173:
174: =item * &saveChanges()
175:
176: Prepares the wishlist-hash to save it via &putWishlist(wishlist).
177:
178:
179: =back
180:
181: =cut
182:
183:
184: # Create a new entry
185: sub newEntry() {
186: my ($title, $path, $note) = @_;
187: my $date = gmtime();
188: # Create Entry-Object
189: my $entry = Entry->new(title => $title, path => $path, note => $note, date => $date);
190: # Create Tree-Object, this correspones a node in the wishlist-tree
191: my $tree = Tree->new($entry);
192: # Add this node to wishlist-tree
193: my $folderIndex = $env{'form.folders'};
194: if ($folderIndex ne '') {
195: @allFolders = ();
196: &getFoldersToArray(\@childrenRt);
197: my $folderToInsertOn = &Tree::getNodeByIndex($folderIndex,\@allFolders);
198: $folderToInsertOn->add_child($tree);
199: }
200: else {
201: $root->add_child($tree);
202: }
203: &saveChanges();
204: }
205:
206:
207: # Delete entries
208: sub deleteEntries {
209: my $marked = shift;
210: &getNodesToArray(\@childrenRt);
211:
212: foreach my $m (@$marked) {
213: my $found = &Tree::getNodeByIndex($m, \@allNodes);
214: &Tree::removeNode($found);
215: }
216: @allNodes = ();
217: &saveChanges();
218: }
219:
220:
221: # Sort entries
222: sub sortEntries {
223: my $indexNode = shift;
224: my $at = shift;
225:
226: &getNodesToArray(\@childrenRt);
227: my $foundNode = &Tree::getNodeByIndex($indexNode, \@allNodes);
228:
229: &Tree::moveNode($foundNode,$at,undef);
230: @allNodes = ();
231: }
232:
233:
234: # Move entries
235: sub moveEntries {
236: my $indexNodesToMove = shift;
237: my $indexParent = shift;
238: my @nodesToMove = ();
239:
240: # get all nodes that should be moved
241: &getNodesToArray(\@childrenRt);
242: foreach my $index (@$indexNodesToMove) {
243: my $foundNode = &Tree::getNodeByIndex($index, \@allNodes);
244: push(@nodesToMove, $foundNode);
245: }
246:
247: foreach my $node (@nodesToMove) {
248: my $foundParent;
249: my $parentIsIn = 0;
250: foreach my $n (@nodesToMove) {
251: if ($node->parent()->value() ne "root") {
252: if ($node->parent()->value()->nindex() == $n->value()->nindex()) {
253: $parentIsIn = 1;
254: }
255: }
256: }
257: if (!$parentIsIn) {
258: if ($indexParent ne "root") {
259: $foundParent = &Tree::getNodeByIndex($indexParent, \@allNodes);
260: &Tree::moveNode($node,undef,$foundParent);
261: }
262: else {
263: &Tree::moveNode($node,undef,$root);
264: }
265: }
266: }
267: @allNodes = ();
268: }
269:
270:
271: # Set a new title for an entry
272: sub setNewTitle {
273: my ($nodeindex, $newTitle) = @_;
274: &getNodesToArray(\@childrenRt);
275: my $found = &Tree::getNodeByIndex($nodeindex, \@allNodes);
276: $found->value()->title($newTitle);
277: @allNodes = ();
278: }
279:
280:
281: # Set a new path for an entry
282: sub setNewPath {
283: my ($nodeindex, $newPath) = @_;
284: &getNodesToArray(\@childrenRt);
285: my $found = &Tree::getNodeByIndex($nodeindex, \@allNodes);
286: if ($found->value()->path()) {
287: $found->value()->path($newPath);
288: return 1;
289: }
290: @allNodes = ();
291: return 0;
292: }
293:
294:
295: # Set a new note for an entry
296: sub setNewNote {
297: my ($nodeindex, $newNote) = @_;
298: &getNodesToArray(\@childrenRt);
299: my $found = &Tree::getNodeByIndex($nodeindex, \@allNodes);
300: $found->value()->note($newNote);
301: @allNodes = ();
302: }
303:
304:
305: # Save all changes
306: sub saveChanges {
307: @childrenRt = $root->children();
308: &Tree::TreeIndex(\@childrenRt);
309: &Tree::setCountZero();
310: &Tree::RootToHash(\@childrenRt);
311: &Tree::TreeToHash(\@childrenRt);
312: &deleteWishlist();
313: &putWishlist(\%TreeToHash);
314:
315: }
316:
317:
318: =pod
319:
320: =head2 Routines for handling the directory structure
321:
322: =over 4
323:
324: =item * &getFoldersForOption(nodes)
325:
326: Return the titles for all exiting folders in an option-tag, used to offer the users a possibility to create a new link or folder in an existing folder.
327: Recursive call starting with all children of the root of the tree (parameter nodes is reference to an array containing the nodes of the current level).
328:
329:
330: =item * &getfoldersOption()
331:
332: Returns the option-tag build by &getFoldersForOption(nodes). Use it to transfer this to other modules (e.g. lonmenu.pm).
333:
334:
335: =item * &getFoldersToArray(children)
336:
337: Puts all nodes that represent folders in the wishlist into an array.
338: Recursive call starting with all children of the root of the tree (parameter nodes is reference to an array containing the nodes of the current level).
339:
340:
341: =item * &getNodesToArray(children)
342:
343: Puts all existing nodes into an array (apart from the root node, because this one does not represent an entry in the wishlist).
344: Recursive call starting with all children of the root of the tree (parameter nodes is reference to an array containing the nodes of the current level).
345:
346:
347: =back
348:
349: =cut
350:
351:
352: # Return the names for all exiting folders in option-tags, so
353: # a new link or a new folder can be created in an existing folder
354: my $indent = 0;
355: my $foldersOption;
356: sub getFoldersForOption {
357: my $nodes = shift;
358:
359: foreach my $n (@$nodes) {
360: if ($n->value()->path() eq '') {
361: $foldersOption .= '<option value="'.$n->value()->nindex().'" style="margin-left:'.$indent.'px">'.
362: $n->value()->title().
363: '</option>';
364:
365: my @children = $n->children();
366: if ($#children >=0) {
367: $indent += 10;
368: &getFoldersForOption(\@children);
369: $indent -= 10;
370: }
371: }
372: }
373: }
374:
375:
376: sub getfoldersOption {
377: if (&getWishlist ne 'error') {
378: %TreeHash = &getWishlist();
379: $root = &Tree::HashToTree();
380: @childrenRt = $root->children();
381: &getFoldersForOption(\@childrenRt);
382: my $options = '<option value="" selected="selected">('.&mt('Top level').')</option>'.$foldersOption;
383: $foldersOption = '';
384: return $options;
385: }
386: else {
387: return '';
388: }
389: }
390:
391:
392: # Put all folder-nodes to an array
393: sub getFoldersToArray {
394: my $children = shift;
395: foreach my $c (@$children) {
396: if ($c->value()->path() eq '') {
397: push(@allFolders,$c);
398: }
399: my @newchildren = $c->children();
400: if ($#newchildren >= 0) {
401: &getFoldersToArray(\@newchildren);
402: }
403: }
404: }
405:
406:
407: # Put all nodes to an array
408: sub getNodesToArray {
409: my $children = shift;
410: foreach my $c (@$children) {
411: push(@allNodes,$c);
412: my @newchildren = $c->children();
413: if ($#newchildren >= 0) {
414: &getNodesToArray(\@newchildren);
415: }
416: }
417: }
418:
419:
420: =pod
421:
422: =head2 Routines for the user-interface of the wishlist
423:
424: =over 4
425:
426: =item * &JSforWishlist()
427:
428: Returns JavaScript-functions needed for wishlist actions like open and close folders.
429:
430:
431: =item * &wishlistView(nodes)
432:
433: Returns the table-HTML-markup for the wishlist in mode "view".
434: Recursive call starting with all children of the root of the tree (parameter nodes is reference to an array containing the nodes of the current level).
435:
436:
437: =item * &wishlistEdit(nodes)
438:
439: Returns the table-HTML-markup for the wishlist in mode "edit".
440: Recursive call starting with all children of the root of the tree (parameter nodes is reference to an array containing the nodes of the current level).
441:
442:
443: =item * &wishlistMove(nodes, marked)
444:
445: Returns the table-HTML-markup for the wishlist in mode "move". Highlights all entry "selected to move" contained in marked (reference to array).
446: Recursive call starting with all children of the root of the tree (parameter nodes is reference to an array containing the nodes of the current level).
447:
448:
449: =item * &wishlistImport(nodes)
450:
451: Returns the table-HTML-markup for the wishlist in mode "import".
452: Recursive call starting with all children of the root of the tree (parameter nodes is reference to an array containing the nodes of the current level).
453:
454:
455: =item * &makePage(mode, marked)
456:
457: Returns the HTML-markup for the whole wishlist depending on mode. If mode is "move" we need the marked entries to be highlighted a "selected to move".
458: Calls &wishlistView(nodes), &wishlistEdit(nodes) or &wishlistMove(nodes, marked).
459:
460:
461: =item * &makePageSet()
462:
463: Returns the HTML-Markup for the page shown when a link was set by using the icon when viewing a resource.
464:
465:
466: =item * &makePageImport()
467:
468: Returns the HTML-Markup for the page shown when links should be imported into courses.
469:
470:
471: =item * &makeErrorPage ()
472:
473: Returns the HTML-Markup for an error-page shown if the wishlist could not be loaded.
474:
475:
476: =back
477:
478: =cut
479:
480:
481: # Return a script-tag containing Javascript-function
482: # needed for wishlist actions like 'new link' ect.
483: sub JSforWishlist {
484: my $startPagePopup = &Apache::loncommon::start_page('Wishlist',undef,
485: {'only_body' => 1,
486: 'js_ready' => 1,
487: 'bgcolor' => '#FFFFFF',});
488: my $endPagePopup = &Apache::loncommon::end_page({'js_ready' => 1});
489:
490: @allFolders = ();
491: &getFoldersToArray(\@childrenRt);
492: &getFoldersForOption(\@childrenRt);
493:
494: # texthash
495: my %lt = &Apache::lonlocal::texthash(
496: 'nl' => 'New Link',
497: 'nf' => 'New Folder',
498: 'lt' => 'Link Title',
499: 'ft' => 'Folder Title',
500: 'pa' => 'Path',
501: 'nt' => 'Note',
502: 'si' => 'Save in',
503: 'cl' => 'Cancel');
504:
505:
506: my $inPageNewLink = '<h1>'.$lt{'nl'}.'</h1>'.
507: '<form method="post" name="newlink" action="/adm/wishlist" target="wishlist" '.
508: 'onsubmit="return newlinksubmit();" >'.
509: &Apache::lonhtmlcommon::start_pick_box().
510: &Apache::lonhtmlcommon::row_title($lt{'lt'}).
511: '<input type="text" name="title" size="45" value="" />'.
512: &Apache::lonhtmlcommon::row_closure().
513: &Apache::lonhtmlcommon::row_title($lt{'pa'}).
514: '<input type="text" name="path" size="45" value="" />'.
515: &Apache::lonhtmlcommon::row_closure().
516: &Apache::lonhtmlcommon::row_title($lt{'nt'}).
517: '<textarea name="note" rows="3" cols="35" style="width:100%"></textarea>'.
518: &Apache::lonhtmlcommon::row_closure(1).
519: &Apache::lonhtmlcommon::end_pick_box().
520: '<br/><br/>'.
521: '<input type="submit" value="'.$lt{'si'}.'" />'.
522: '<select name="folders">'.
523: '<option value="" selected="selected">('.&mt('Top level').')</option>'.
524: $foldersOption.
525: '</select>'.
526: '<input type="button" value="'.$lt{'cl'}.'" onclick="javascript:window.close();" />'.
527: '</form>';
528:
529: my $inPageNewFolder = '<h1>'.$lt{'nf'}.'</h1>'.
530: '<form method="post" name="newfolder" action="/adm/wishlist" target="wishlist" '.
531: 'onsubmit="return newfoldersubmit();" >'.
532: &Apache::lonhtmlcommon::start_pick_box().
533: &Apache::lonhtmlcommon::row_title($lt{'ft'}).
534: '<input type="text" name="title" size="45" value="" /><br />'.
535: &Apache::lonhtmlcommon::row_closure().
536: &Apache::lonhtmlcommon::row_title($lt{'nt'}).
537: '<textarea name="note" rows="3" cols="35" style="width:100%"></textarea><br />'.
538: &Apache::lonhtmlcommon::row_closure(1).
539: &Apache::lonhtmlcommon::end_pick_box().
540: '<br/><br/>'.
541: '<input type="submit" value="'.$lt{'si'}.'" />'.
542: '<select name="folders">'.
543: '<option value="" selected="selected">('.&mt('Top level').')</option>'.
544: $foldersOption.
545: '</select>'.
546: '<input type="button" value="'.$lt{'cl'}.'" onclick="javascript:window.close();" />'.
547: '</form>';
548:
549: # Remove all \n for inserting on javascript document.write
550: $inPageNewLink =~ s/\n//g;
551: $inPageNewFolder =~ s/\n//g;
552:
553: # it is checked, wether a path links to a LON-CAPA-resource or an external website. links to course-contents are not allowed
554: # because they probably will return a kind of 'no access' (unless the user is already in the course, the path links to).
555: # also importing these kind of links into a course does not make much sense.
556: # to find out if a path (not starting with /res/...) links to course-contents, the same filter as in lonwrapper is used,
557: # that means that it is checked wether a path contains .problem, .quiz, .exam etc.
558: # this is good for most cases but crashes as soon as a real external website contains one of this pattern in its URL.
559: # so maybe there's a better way to find out wether a given URL belongs to a LON-CAPA-server or not ...?
560: my $warningLinkNotAllowed1 = &mt('You can only insert links to LON-CAPA resources from the resource-pool '.
561: 'or to external websites. Paths to LON-CAPA resources must be of the form /res/dom/usr... . '.
562: 'Paths to external websites must contain the network protocol (e.g. http://...).');
563: my $warningLinkNotAllowed2 = &mt('The following link is not allowed: ');
564: my $warningLink = &mt('You must insert a title and a path!');
565: my $warningFolder = &mt('You must insert a title!');
566: my $warningDelete = &mt('Are you sure you want to delete the selected entries? Deleting a folder also deletes all entries within this folder!');
567: my $warningSave = &mt('You have unsaved changes. You can either save these changes now by clicking "ok" or click "cancel" if you do not want to save your changes.');
568: my $warningMove = &mt('You must select a destination folder!');
569: $foldersOption = '';
570:
571: my $js = &Apache::lonhtmlcommon::scripttag(<<JAVASCRIPT);
572: function newLink() {
573: newlinkWin=window.open('','newlinkWin','width=580,height=320,scrollbars=yes');
574: newlinkWin.document.write('$startPagePopup'
575: +'<script type="text\/javascript">'
576: +'function newlinksubmit(){'
577: +'var path = document.getElementsByName("path")[0].value;'
578: +'var title = document.getElementsByName("title")[0].value;'
579: +'if (!path || !title) {'
580: +'alert("$warningLink");'
581: +'return false;}'
582: +'var linkOK = (path.match(/^http:(\\\\/\\\\/)/) || path.match(/^https:(\\\\/\\\\/)/))'
583: +'&& !(path.match(/\\.problem/) || path.match(/\\.exam/)'
584: +'|| path.match(/\\.quiz/) || path.match(/\\.assess/)'
585: +'|| path.match(/\\.survey/) || path.match(/\\.form/)'
586: +'|| path.match(/\\.library/) || path.match(/\\.page/)'
587: +'|| path.match(/\\.sequence/));'
588: +'if (!path.match(/^(\\\\/res\\\\/)/) && !linkOK) {'
589: +'alert("$warningLinkNotAllowed1");'
590: +'return false;}'
591: +'else {'
592: +'window.close();'
593: +'return true;}}'
594: +'<\/scr'+'ipt>'
595: +'$inPageNewLink'
596: +'$endPagePopup');
597: newlinkWin.document.close();
598: }
599:
600: function newFolder() {
601: newfolderWin=window.open('','newfolderWin','width=580,height=270, scrollbars=yes');
602: newfolderWin.document.write('$startPagePopup'
603: +'<script type="text\/javascript">'
604: +'function newfoldersubmit(){'
605: +'var title = document.getElementsByName("title")[0].value;'
606: +'if (!title) {'
607: +'alert("$warningFolder");'
608: +'return false;}'
609: +'else {'
610: +'window.close();'
611: +'return true;}}'
612: +'<\/scr'+'ipt>'
613: +'$inPageNewFolder'
614: +'$endPagePopup');
615: newfolderWin.document.close();
616: }
617:
618: function setFormAction(action,mode) {
619: var r = true;
620: setAction('');
621: if (action == 'delete') {
622: r = confirm("$warningDelete");
623: setAction('delete');
624: }
625: else if (action == 'save') {
626: var d = getDifferences();
627: if (d) {
628: if (!confirm('$warningSave')) {
629: setAction('noSave');
630: r = true;
631: }
632: else {
633: r = linksOK();
634: }
635: }
636: }
637: else if (action == 'saveOK') {
638: r = linksOK();
639: }
640: else if (action == 'move') {
641: r = selectDestinationFolder();
642: }
643: document.getElementsByName('list')[0].setAttribute("action", "/adm/wishlist?mode="+mode);
644: if (r) {
645: document.getElementsByName('list')[0].submit();
646: }
647: }
648:
649: function setAction(action) {
650: document.getElementById('action').value = action;
651: }
652:
653: function getDifferences() {
654: var newtitles = document.getElementsByName('newtitle');
655: var i = 0;
656: for (i=0;i<newtitles.length;i++) {
657: var newt = newtitles[i].value;
658: var oldt = newtitles[i].alt;
659: if (newt != oldt) {
660: return true;
661: }
662: }
663: var newpath = document.getElementsByName('newpath');
664: var i = 0;
665: for (i=0;i<newpath.length;i++) {
666: var newp = newpath[i].value;
667: var oldp = newpath[i].alt;
668: if (newp != oldp) {
669: return true;
670: }
671: }
672: var newnote = document.getElementsByName('newnote');
673: var i = 0;
674: for (i=0;i<newnote.length;i++) {
675: var newn = newnote[i].value;
676: var oldn = newnote[i].innerHTML;
677: if (newn != oldn) {
678: return true;
679: }
680: }
681: return false;
682: }
683:
684: function linksOK() {
685: var newpath = document.getElementsByName('newpath');
686: var i = 0;
687: for (i=0;i<newpath.length;i++) {
688: var path = newpath[i].value;
689: var linkOK = (path.match(/^http:\\/\\//) || path.match(/^https:\\/\\//))
690: && !(path.match(/\\.problem/) || path.match(/\\.exam/)
691: || path.match(/\\.quiz/) || path.match(/\\.assess/)
692: || path.match(/\\.survey/) || path.match(/\\.form/)
693: || path.match(/\\.library/) || path.match(/\\.page/)
694: || path.match(/\\.sequence/));
695: if (!path.match(/^(\\/res\\/)/) && !linkOK) {
696: alert("$warningLinkNotAllowed1 $warningLinkNotAllowed2"+path);
697: return false;
698: }
699: }
700: return true;
701: }
702:
703: function onLoadAction(mode) {
704: window.name = 'wishlist';
705: if (mode == "edit") {
706: var deepestRows = getDeepestRows();
707: setDisplaySelect(deepestRows, '');
708: }
709: }
710:
711: function folderAction(rowid) {
712: var row = document.getElementById(rowid);
713: var indent = getIndent(row);
714: var displ;
715: var status;
716: if (getImage(row) == 'closed') {
717: displ = '';
718: status = 'open';
719: }
720: else {
721: displ = 'LC_hidden';
722: status = 'closed';
723: }
724: setImage(row,status);
725: if (getNextRow(row) != null) {
726: var nextIndent = getIndent(getNextRow(row));
727: row = getNextRow(row);
728: while (nextIndent > indent) {
729: if (displ == '') {
730: row.className = (row.className).replace('LC_hidden','');
731: }
732: else if (displ != '' && !((row.className).match('LC_hidden'))) {
733: var oldClass = row.className;
734: row.className = oldClass+' LC_hidden';
735: setDisplayNote(row.id.replace('row','note'),'LC_hidden');
736: }
737: if (status == 'open' && getImage(row).match('closed')) {
738: row = getNextRowWithIndent(row, getIndent(row));
739: }
740: else {
741: row = getNextRow(row);
742: }
743: if (row != null) {
744: nextIndent = getIndent(row);
745: }
746: else {
747: nextIndent = indent;
748: }
749: }
750: }
751: setClasses();
752: var newtitles = document.getElementsByName('newtitle');
753: if (newtitles.length>0) {
754: var deepestRows = getDeepestRows();
755: var otherRows = getOtherRows(deepestRows);
756: setDisplaySelect(deepestRows,'');
757: setDisplaySelect(otherRows,'LC_hidden');
758: }
759: }
760:
761: function selectAction(rowid) {
762: var row = document.getElementById(rowid);
763: var indent = getIndent(row);
764: var checked = getChecked(row);
765: var previousFolderRows = new Array();
766: if (indent != 0) {
767: previousFolderRows = getPreviousFolderRows(row);
768: }
769: if (getNextRow(row) != null) {
770: var nextIndent = getIndent(getNextRow(row));
771: row = getNextRow(row);
772: while (nextIndent > indent) {
773: setChecked(row,checked);
774: if (status == 'open' && getImage(row).match('closed')) {
775: row = getNextRowWithIndent(row, getIndent(row));
776: }
777: else {
778: row = getNextRow(row);
779: }
780: if (row != null) {
781: nextIndent = getIndent(row);
782: }
783: else {
784: nextIndent = indent;
785: }
786: }
787: }
788: if (!checked) {
789: var i = 0;
790: for (i=0;i<previousFolderRows.length;i++) {
791: setChecked(previousFolderRows[i], false);
792: }
793: }
794: }
795:
796: function getNextNote(row) {
797: var rowId = row.id;
798: var nextRowId = parseInt(rowId.substr(3,rowId.length))+1;
799: nextRowId = "note"+nextRowId;
800: var nextRow = document.getElementById(nextRowId);
801: return nextRow;
802: }
803:
804: function getNextRow(row) {
805: var rowId = row.id;
806: var nextRowId = parseInt(rowId.substr(3,rowId.length))+1;
807: nextRowId = "row"+nextRowId;
808: var nextRow = document.getElementById(nextRowId);
809: return nextRow;
810: }
811:
812: function getPreviousRow(row) {
813: var rowId = row.id;
814: var previousRowId = parseInt(rowId.substr(3,rowId.length))-1;
815: previousRowId = "row"+previousRowId;
816: var previousRow =document.getElementById(previousRowId);
817: return previousRow;
818: }
819:
820: function getIndent(row) {
821: var childPADD = document.getElementById(row.id.replace('row','padd'));
822: indent = childPADD.style.paddingLeft;
823: indent = parseInt(indent.substr(0,(indent.length-2)));
824:
825: if (getImage(row).match('link')) {
826: indent -= $indentConst;
827: }
828: return indent;
829: }
830:
831: function getNextRowWithIndent(row, indent) {
832: var nextRow = getNextRow(row);
833: if (nextRow != null) {
834: var nextIndent = getIndent(nextRow);
835: while (nextIndent >= indent) {
836: if (nextIndent == indent) {
837: return nextRow;
838: }
839: nextRow = getNextRow(nextRow);
840: if (nextRow == null) {
841: return null;
842: }
843: nextIndent = getIndent(nextRow);
844: }
845: }
846: return nextRow;
847: }
848:
849: function getImage(row) {
850: var childIMG = document.getElementById(row.id.replace('row','img'));
851: if ((childIMG.src).match('closed')) {
852: return 'closed';
853: }
854: else if ((childIMG.src).match('open')) {
855: return 'open;'
856: }
857: else {
858: return 'link';
859: }
860: }
861:
862: function setImage(row, status) {
863: var childIMG = document.getElementById(row.id.replace('row','img'));
864: var childIMGFolder = document.getElementById(row.id.replace('row','imgFolder'));
865: childIMG.src = "/adm/lonIcons/arrow."+status+".gif";
866: childIMGFolder.src="/adm/lonIcons/navmap.folder."+status+".gif";
867: }
868:
869: function getChecked(row) {
870: var childCHECK = document.getElementById(row.id.replace('row','check'));
871: var checked = childCHECK.checked;
872: return checked;
873: }
874:
875: function setChecked(row,checked) {
876: var childCHECK = document.getElementById(row.id.replace('row','check'));
877: childCHECK.checked = checked;
878: }
879:
880: function getPreviousFolderRows(row) {
881: var previousRow = getPreviousRow(row);
882: var indent = getIndent(previousRow);
883: var kindOfEntry = getImage(previousRow);
884: var rows = new Array();
885: if (kindOfEntry != 'link') {
886: rows.push(previousRow);
887: }
888:
889: while (indent >0) {
890: previousRow = getPreviousRow(previousRow);
891: if (previousRow != null) {
892: indent = getIndent(previousRow);
893: kindOfEntry = getImage(previousRow);
894: if (kindOfEntry != 'link') {
895: rows.push(previousRow);
896: }
897: }
898: else {
899: indent = 0;
900: }
901: }
902: return rows;
903: }
904:
905: function getDeepestRows() {
906: var row = document.getElementById('row0');
907: var firstRow = row;
908: var indent = getIndent(row);
909: var maxIndent = indent;
910: while (getNextRow(row) != null) {
911: row = getNextRow(row);
912: indent = getIndent(row);
913: if (indent>maxIndent && !((row.className).match('LC_hidden'))) {
914: maxIndent = indent;
915: }
916: }
917: var deepestRows = new Array();
918: row = firstRow;
919: var rowIndent;
920: while (getNextRow(row) != null) {
921: rowIndent = getIndent(row);
922: if (rowIndent == maxIndent) {
923: deepestRows.push(row);
924: }
925: row = getNextRow(row);
926: }
927: rowIndent = getIndent(row);
928: if (rowIndent == maxIndent) {
929: deepestRows.push(row);
930: }
931: return deepestRows;
932: }
933:
934: function getOtherRows(deepestRows) {
935: var row = document.getElementById('row0');
936: var otherRows = new Array();
937: var isIn = false;
938: while (getNextRow(row) != null) {
939: var i = 0;
940: for (i=0; i < deepestRows.length; i++) {
941: if (row.id == deepestRows[i].id) {
942: isIn = true;
943: }
944: }
945: if (!isIn) {
946: otherRows.push(row);
947: }
948: row = getNextRow(row);
949: isIn = false;
950: }
951: for (i=0; i < deepestRows.length; i++) {
952: if (row.id == deepestRows[i].id) {
953: isIn = true;
954: }
955: }
956: if (!isIn) {
957: otherRows.push(row);
958: }
959: return otherRows;
960: }
961:
962: function setDisplaySelect(deepestRows, displ) {
963: var i = 0;
964: for (i = 0; i < deepestRows.length; i++) {
965: var row = deepestRows[i];
966: var childSEL = document.getElementById(row.id.replace('row','sel'));
967: childSEL.className = displ;
968: }
969: }
970:
971: function submitSelect() {
972: var list = document.getElementsByName('list')[0];
973: list.setAttribute("action","/adm/wishlist?mode=edit");
974: list.submit();
975: }
976:
977: function setDisplayNote(rowid, displ) {
978: var row = document.getElementById(rowid);
979: if (!displ) {
980: if ((row.className).match('LC_hidden')) {
981: row.className = (row.className).replace('LC_hidden','');
982: }
983: else {
984: var oldClass = row.className;
985: row.className = oldClass+' LC_hidden';
986: }
987: }
988: else {
989: if (displ == '') {
990: row.className = (row.className).replace('LC_hidden','');
991: }
992: else if (displ != '' && !((row.className).match('LC_hidden'))) {
993: var oldClass = row.className;
994: row.className = oldClass+' LC_hidden';
995: }
996: }
997: var noteText = document.getElementById(rowid.replace('note','noteText'));
998: var noteImg = document.getElementById(rowid.replace('note','noteImg'));
999: if (noteText.value) {
1000: noteImg.src = "/res/adm/pages/anot2.png";
1001: }
1002: else {
1003: noteImg.src = "/res/adm/pages/anot.png";
1004: }
1005:
1006: }
1007:
1008: function setClasses() {
1009: var row = document.getElementById("row0");
1010: var note = document.getElementById("note0");
1011: var LC_class = 0;
1012: if (getNextRow(row) != null) {
1013: while (getNextRow(row) != null) {
1014: if (!(row.className).match('LC_hidden')) {
1015: note.className = (note.className).replace('LC_even_row','');
1016: note.className = (note.className).replace('LC_odd_row','');
1017: if (LC_class) {
1018: row.className = 'LC_even_row';
1019: note.className = 'LC_even_row'+note.className;
1020: }
1021: else {
1022: row.className = 'LC_odd_row';
1023: note.className = 'LC_odd_row'+note.className;;
1024: }
1025: LC_class = !LC_class;
1026: }
1027: note = getNextNote(row);
1028: row = getNextRow(row);
1029: }
1030: }
1031: if (!(row.className).match('LC_hidden')) {
1032: note.className = (note.className).replace('LC_even_row','');
1033: note.className = (note.className).replace('LC_odd_row','');
1034: if (LC_class) {
1035: row.className = 'LC_even_row';
1036: note.className = 'LC_even_row'+note.className;
1037: }
1038: else {
1039: row.className = 'LC_odd_row';
1040: note.className = 'LC_odd_row'+note.className;
1041: }
1042: }
1043: }
1044:
1045: function selectDestinationFolder() {
1046: var mark = document.getElementsByName('mark');
1047: var i = 0;
1048: for (i = 0; i < mark.length; i++) {
1049: if (mark[i].checked) {
1050: document.getElementsByName('list')[0].submit();
1051: return true;
1052: }
1053: }
1054: alert('$warningMove');
1055: return false;
1056: }
1057:
1058: function preview(url) {
1059: var newWin;
1060: if (!(url.match(/^http:\\/\\//) || url.match(/^https:\\/\\//))) {
1061: newWin = window.open(url+'?inhibitmenu=yes','preview','width=560,height=350,scrollbars=yes');
1062: }
1063: else {
1064: newWin = window.open(url,'preview','width=560,height=350,scrollbars=yes');
1065: }
1066: newWin.focus();
1067: }
1068:
1069: function finish_import() {
1070: opener.document.forms.simpleedit.importdetail.value='';
1071: for (var num = 0; num < document.forms.groupsort.fnum.value; num++) {
1072: if (eval("document.forms.groupsort.check"+num+".checked") && eval("document.forms.groupsort.filelink"+num+".value") != '') {
1073: opener.document.forms.simpleedit.importdetail.value+='&'+
1074: eval("document.forms.groupsort.title"+num+".value")+'='+
1075: eval("document.forms.groupsort.filelink"+num+".value")+'='+
1076: eval("document.forms.groupsort.id"+num+".value");
1077: }
1078: }
1079: opener.document.forms.simpleedit.submit();
1080: self.close();
1081: }
1082:
1083: function checkAll() {
1084: var checkboxes = document.getElementsByName('check');
1085: for (var i = 0; i < checkboxes.length; i++) {
1086: checkboxes[i].checked = "checked";
1087: }
1088: }
1089:
1090: function uncheckAll() {
1091: var checkboxes = document.getElementsByName('check');
1092: for (var i = 0; i < checkboxes.length; i++) {
1093: checkboxes[i].checked = "";
1094: }
1095: }
1096:
1097: JAVASCRIPT
1098: return $js;
1099: }
1100:
1101:
1102: # HTML-Markup for table if in view-mode
1103: my $wishlistHTMLview;
1104: my $indent = $indentConst;
1105: sub wishlistView {
1106: my $nodes = shift;
1107:
1108: foreach my $n (@$nodes) {
1109: my $index = $n->value()->nindex();
1110:
1111: # start row, use data_table routines to set class to LC_even or LC_odd automatically. this row contains a checkbox, the title and the note-icon.
1112: # only display the top level entries on load
1113: $wishlistHTMLview .= ($n->parent()->value() eq 'root')?&Apache::loncommon::start_data_table_row('','row'.$index)
1114: :&Apache::loncommon::continue_data_table_row('LC_hidden','row'.$index);
1115:
1116:
1117: # checkboxes
1118: $wishlistHTMLview .= '<td><input type="checkbox" name="mark" id="check'.$index.'" value="'.$index.'" '.
1119: 'onclick="selectAction('."'row".$index."'".')"/></td>';
1120:
1121: # entry is a folder
1122: if ($n->value()->path() eq '') {
1123: $wishlistHTMLview .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;">'.
1124: '<a href="javascript:;" onclick="folderAction('."'row".$index."'".')" style="vertical-align:top">'.
1125: '<img src="/adm/lonIcons/arrow.closed.gif" id="img'.$index.'" alt = "" class="LC_icon"/>'.
1126: '<img src="/adm/lonIcons/navmap.folder.closed.gif" id="imgFolder'.$index.'" alt="folder"/>'.
1127: $n->value()->title().'</a></td>';
1128: }
1129: # entry is a link
1130: else {
1131: $wishlistHTMLview .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px; min-width: 220px;">'.
1132: '<a href="javascript:preview('."'".$n->value()->path()."'".');">'.
1133: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link" />'.
1134: $n->value()->title().'</a></td>';
1135: }
1136:
1137: # note-icon, different icons for an entries with note and those without
1138: my $noteIMG = 'anot.png';
1139:
1140: if ($n->value()->note() ne '') {
1141: $noteIMG = 'anot2.png';
1142: }
1143:
1144: $wishlistHTMLview .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1145: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1146: ' class="LC_icon"/></a></td>';
1147:
1148: $wishlistHTMLview .= &Apache::loncommon::end_data_table_row();
1149:
1150: # start row containing the textarea for the note, do not display note on default
1151: $wishlistHTMLview .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1152: '<td></td><td>'.
1153: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1154: 'name="newnote" >'.
1155: $n->value()->note().'</textarea></td><td></td>';
1156: $wishlistHTMLview .= &Apache::loncommon::end_data_table_row();
1157:
1158: # if the entry is a folder, it could have other entries as content. if it has, call wishlistView for those entries
1159: my @children = $n->children();
1160: if ($#children >=0) {
1161: $indent += 20;
1162: &wishlistView(\@children);
1163: $indent -= 20;
1164: }
1165: }
1166: }
1167:
1168:
1169: # HTML-Markup for table if in edit-mode
1170: my $wishlistHTMLedit;
1171: my $indent = $indentConst;
1172: sub wishlistEdit {
1173: my $nodes = shift;
1174: my $curNode = 1;
1175:
1176: foreach my $n (@$nodes) {
1177: my $index = $n->value()->nindex();
1178:
1179: # start row, use data_table routines to set class to LC_even or LC_odd automatically.
1180: # this rows contains a checkbox, a select-field for sorting entries, the title in an input-field and the note-icon.
1181: # only display the top level entries on load
1182: $wishlistHTMLedit .= ($n->parent()->value() eq 'root')?&Apache::loncommon::start_data_table_row('','row'.$index)
1183: :&Apache::loncommon::continue_data_table_row('LC_hidden','row'.$index);
1184:
1185: # checkboxes
1186: $wishlistHTMLedit .= '<td><input type="checkbox" name="mark" id="check'.$index.'" value="'.$index.'" '.
1187: 'onclick="selectAction('."'row".$index."'".')"/></td>';
1188:
1189: # option-tags for sorting entries. we need the numbers from 1 to n with n being the number of entries on the same level as the current entry.
1190: # set the number for the current entry into brackets
1191: my $options;
1192: for (my $i = 1; $i < ((scalar @{$nodes})+1); $i++) {
1193: if ($i == $curNode) {
1194: $options .= '<option selected="selected" value="">('.$i.')</option>';
1195: }
1196: else {
1197: $options .= '<option value="'.$i.'">'.$i.'</option>';
1198: }
1199: }
1200: $curNode++;
1201:
1202: # entry is a folder
1203: if ($n->value()->path() eq '') {
1204: $wishlistHTMLedit .= '<td><select class="LC_hidden" name="sel" id="sel'.$index.'" onchange="submitSelect();">'.
1205: $options.'</select></td>'.
1206: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px;">'.
1207: '<a href="javascript:;" onclick="folderAction('."'row".$index."'".')" style="vertical-align:top" >'.
1208: '<img src="/adm/lonIcons/arrow.closed.gif" id="img'.$index.'" alt = "" class="LC_icon"/>'.
1209: '<img src="/adm/lonIcons/navmap.folder.closed.gif" id="imgFolder'.$index.'" alt="folder"/></a>'.
1210: '<input type="text" name="newtitle" value="'.$n->value()->title().'" alt = "'.$n->value()->title().'"/>'.
1211: '</td><td></td>';
1212:
1213: }
1214: # entry is a link
1215: else {
1216: $wishlistHTMLedit .= '<td><select class="LC_hidden" name="sel" id="sel'.$index.'" onchange="submitSelect();">'.
1217: $options.'</select></td>'.
1218: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px;">'.
1219: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link"/>'.
1220: '<input type="text" name="newtitle" value="'.$n->value()->title().'" alt = "'.$n->value()->title().'"/></td>'.
1221: '<td><input type="text" name="newpath" value="'.$n->value()->path().'" alt = "'.$n->value()->path().'"/></td>';
1222: }
1223:
1224: # note-icon, different icons for an entries with note and those without
1225: my $noteIMG = 'anot.png';
1226:
1227: if ($n->value()->note() ne '') {
1228: $noteIMG = 'anot2.png';
1229: }
1230:
1231: $wishlistHTMLedit .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1232: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1233: ' class="LC_icon"/></a></td>';
1234:
1235: $wishlistHTMLedit .= &Apache::loncommon::end_data_table_row();
1236:
1237: # start row containing the textarea for the note
1238: $wishlistHTMLedit .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1239: '<td></td><td></td><td colspan="2">'.
1240: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1241: 'name="newnote">'.
1242: $n->value()->note().'</textarea></td><td></td>';
1243: $wishlistHTMLedit .= &Apache::loncommon::end_data_table_row();
1244:
1245: # if the entry is a folder, it could have other entries as content. if it has, call wishlistEdit for those entries
1246: my @children = $n->children();
1247: if ($#children >=0) {
1248: $indent += 20;
1249: &wishlistEdit(\@children);
1250: $indent -= 20;
1251: }
1252: }
1253: }
1254:
1255:
1256:
1257: # HTML-Markup for table if in move-mode
1258: my $wishlistHTMLmove ='<tr id="root" class="LC_odd_row"><td><input type="radio" name="mark" id="radioRoot" value="root" /></td>'.
1259: '<td>'.&mt('Top level').'</td><td></td></tr>';
1260: my $indent = $indentConst;
1261: sub wishlistMove {
1262: my $nodes = shift;
1263: my $marked = shift;
1264:
1265: foreach my $n (@$nodes) {
1266: my $index = $n->value()->nindex();
1267:
1268: #find out wether the current entry was marked to be moved.
1269: my $isIn = 0;
1270: foreach my $m (@$marked) {
1271: if ($index == $m) {
1272: $isIn = 1;
1273: }
1274: }
1275: # start row and set class for even or odd row. this rows contains the title and the note-icon and can contain a radio-button
1276: $wishlistHTMLmove .= &Apache::loncommon::start_data_table_row('','row'.$index);
1277:
1278:
1279: # entry is a folder
1280: if ($n->value()->path() eq '') {
1281: # display a radio-button, if the folder was not selected to be moved
1282: if (!$isIn) {
1283: $wishlistHTMLmove .= '<td><input type="radio" name="mark" id="radio'.$index.'" value="'.$index.'" /></td>'.
1284: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;">';
1285: }
1286: # higlight the title, if the folder was selected to be moved
1287: else {
1288: $wishlistHTMLmove .= '<td></td>'.
1289: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;'.
1290: 'color:red;">';
1291: }
1292: #arrow- and folder-image, all folders are open, and title
1293: $wishlistHTMLmove .= '<img src="/adm/lonIcons/arrow.open.gif" id="img'.$index.'" alt = "" />'.
1294: '<img src="/adm/lonIcons/navmap.folder.open.gif" id="imgFolder'.$index.'" alt="folder"/>'.
1295: $n->value()->title().'</td>';
1296: }
1297: # entry is a link
1298: else {
1299: # higlight the title, if the link was selected to be moved
1300: my $highlight = '';
1301: if ($isIn) {
1302: $highlight = 'style="color:red;"';
1303: }
1304: # link-image and title
1305: $wishlistHTMLmove .= '<td></td>'.
1306: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px; min-width: 220px;">'.
1307: '<a href="javascript:preview('."'".$n->value()->path()."'".');" '.$highlight.'>'.
1308: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link"/>'.
1309: $n->value()->title().'</a></td>';
1310: }
1311:
1312: # note-icon, different icons for an entries with note and those without
1313: my $noteIMG = 'anot.png';
1314:
1315: if ($n->value()->note() ne '') {
1316: $noteIMG = 'anot2.png';
1317: }
1318:
1319: $wishlistHTMLmove .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1320: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1321: ' class="LC_icon"/></a></td>';
1322:
1323: $wishlistHTMLmove .= &Apache::loncommon::end_data_table_row();
1324:
1325: # start row containing the textarea for the note, readonly in move-mode
1326: $wishlistHTMLmove .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1327: '<td></td><td>'.
1328: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1329: 'name="newnote" readonly="readonly">'.
1330: $n->value()->note().'</textarea></td><td></td>'.
1331: &Apache::loncommon::end_data_table_row();
1332:
1333: # if the entry is a folder, it could have other entries as content. if it has, call wishlistMove for those entries
1334: my @children = $n->children();
1335: if ($#children >=0) {
1336: $indent += 20;
1337: &wishlistMove(\@children, $marked);
1338: $indent -= 20;
1339: }
1340: }
1341: }
1342:
1343:
1344:
1345: # HTML-Markup for table if in import-mode
1346: my $wishlistHTMLimport;
1347: my $indent = $indentConst;
1348: my $form = 1;
1349: sub wishlistImport {
1350: my $nodes = shift;
1351:
1352: foreach my $n (@$nodes) {
1353: my $index = $n->value()->nindex();
1354:
1355: # start row, use data_table routines to set class to LC_even or LC_odd automatically. this row contains a checkbox, the title and the note-icon.
1356: # only display the top level entries on load
1357: $wishlistHTMLimport .= ($n->parent()->value() eq 'root')?&Apache::loncommon::start_data_table_row('','row'.$index)
1358: :&Apache::loncommon::continue_data_table_row('LC_hidden','row'.$index);
1359:
1360:
1361: # checkboxes
1362: $wishlistHTMLimport .= '<td>'.
1363: '<input type="checkbox" name="check" id="check'.$index.'" value="'.$index.'" '.
1364: 'onclick="selectAction('."'row".$index."'".')"/>'.
1365: '<input type="hidden" name="title'.$index.'" value="'.&escape($n->value()->title()).'">'.
1366: '<input type="hidden" name="filelink'.$index.'" value="'.&escape($n->value()->path()).'">'.
1367: '<input type="hidden" name="id'.$index.'">'.
1368: '</td>';
1369:
1370: # entry is a folder
1371: if ($n->value()->path() eq '') {
1372: $wishlistHTMLimport .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;">'.
1373: '<a href="javascript:;" onclick="folderAction('."'row".$index."'".')" style="vertical-align:top">'.
1374: '<img src="/adm/lonIcons/arrow.closed.gif" id="img'.$index.'" alt = "" class="LC_icon"/>'.
1375: '<img src="/adm/lonIcons/navmap.folder.closed.gif" id="imgFolder'.$index.'" alt="folder"/>'.
1376: $n->value()->title().'</a></td>';
1377: }
1378: # entry is a link
1379: else {
1380: $wishlistHTMLimport .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px; min-width: 220px;">'.
1381: '<a href="javascript:preview('."'".$n->value()->path()."'".');">'.
1382: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link" />'.
1383: $n->value()->title().'</a></td>';
1384: $form++;
1385: }
1386:
1387: # note-icon, different icons for an entries with note and those without
1388: my $noteIMG = 'anot.png';
1389:
1390: if ($n->value()->note() ne '') {
1391: $noteIMG = 'anot2.png';
1392: }
1393:
1394: $wishlistHTMLimport .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1395: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1396: ' class="LC_icon"/></a></td>';
1397:
1398: $wishlistHTMLimport .= &Apache::loncommon::end_data_table_row();
1399:
1400: # start row containing the textarea for the note, do not display note on default, readonly in import-mode
1401: $wishlistHTMLimport .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1402: '<td></td><td>'.
1403: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1404: 'name="newnote" readonly="readonly">'.
1405: $n->value()->note().'</textarea></td><td></td>';
1406: $wishlistHTMLimport .= &Apache::loncommon::end_data_table_row();
1407:
1408: # if the entry is a folder, it could have other entries as content. if it has, call wishlistImport for those entries
1409: my @children = $n->children();
1410: if ($#children >=0) {
1411: $indent += 20;
1412: &wishlistImport(\@children);
1413: $indent -= 20;
1414: }
1415: }
1416: }
1417:
1418: # Returns the HTML-Markup for wishlist
1419: sub makePage {
1420: my $mode = shift;
1421: my $marked = shift;
1422:
1423: # breadcrumbs and start_page
1424: &Apache::lonhtmlcommon::clear_breadcrumbs();
1425: &Apache::lonhtmlcommon::add_breadcrumb(
1426: { href => '/adm/wishlist?mode='.$mode,
1427: text => 'Wishlist'});
1428: my $startPage = &Apache::loncommon::start_page('Wishlist',undef,
1429: {'add_entries' => {
1430: 'onload' => 'javascript:onLoadAction('."'".$mode."'".');',
1431: 'onunload' => 'javascript:window.name = '."'loncapaclient'"}});
1432:
1433: my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs('Wishlist '.&Apache::loncommon::help_open_topic('Wishlist'));
1434:
1435: # get javascript-code for wishlist-interactions
1436: my $js = &JSforWishlist();
1437:
1438: # texthash for items in funtionlist
1439: my %lt = &Apache::lonlocal::texthash(
1440: 'ed' => 'Edit',
1441: 'vw' => 'View',
1442: 'al' => 'Add Link',
1443: 'af' => 'Add Folder',
1444: 'mv' => 'Move Selected',
1445: 'dl' => 'Delete Selected',
1446: 'sv' => 'Save');
1447:
1448: # start functionlist
1449: my $functions = &Apache::lonhtmlcommon::start_funclist();
1450:
1451: # icon for edit-mode, display when in view-mode
1452: if ($mode eq 'view') {
1453: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1454: 'onclick="setFormAction('."'save','edit'".');" class="LC_menubuttons_link">'.
1455: '<img src="/res/adm/pages/edit-mode-22x22.png" alt="'.$lt{'ed'}.'" '.
1456: 'title="'.$lt{'ed'}.'" class="LC_icon"/> '.
1457: '<span class="LC_menubuttons_inline_text">'.$lt{'ed'}.'</span></a>');
1458: }
1459: # icon for view-mode, display when in edit-mode
1460: else {
1461: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1462: 'onclick="setFormAction('."'save','view'".');" class="LC_menubuttons_link">'.
1463: '<img src="/res/adm/pages/view-mode-22x22.png" alt="'.$lt{'vw'}.'" '.
1464: 'title="'.$lt{'vw'}.'" class="LC_icon"/> '.
1465: '<span class="LC_menubuttons_inline_text">'.$lt{'vw'}.'</span></a>');
1466: }
1467:
1468: # icon for adding a new link
1469: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1470: 'onclick="newLink();" class="LC_menubuttons_link">'.
1471: '<img src="/res/adm/pages/link-new-22x22.png" alt="'.$lt{'al'}.'" '.
1472: 'title="'.$lt{'al'}.'" class="LC_icon"/>'.
1473: '<span class="LC_menubuttons_inline_text">'.$lt{'al'}.'</span></a>');
1474:
1475: # icon for adding a new folder
1476: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1477: 'onclick="newFolder();" class="LC_menubuttons_link">'.
1478: '<img src="/res/adm/pages/folder-new-22x22.png" alt="'.$lt{'af'}.'" '.
1479: 'title="'.$lt{'af'}.'" class="LC_icon"/>'.
1480: '<span class="LC_menubuttons_inline_text">'.$lt{'af'}.'</span></a>');
1481:
1482: # icon for moving entries
1483: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1484: 'onclick="setFormAction('."'move','move'".'); " class="LC_menubuttons_link">'.
1485: '<img src="/res/adm/pages/move-22x22.png" alt="'.$lt{'mv'}.'" '.
1486: 'title="'.$lt{'mv'}.'" class="LC_icon" />'.
1487: '<span class="LC_menubuttons_inline_text">'.$lt{'mv'}.'</span></a>');
1488:
1489: # icon for deleting entries
1490: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1491: 'onclick="setFormAction('."'delete','".$mode."'".'); " class="LC_menubuttons_link">'.
1492: '<img src="/res/adm/pages/del.png" alt="'.$lt{'dl'}.'" '.
1493: 'title="'.$lt{'dl'}.'" class="LC_icon" />'.
1494: '<span class="LC_menubuttons_inline_text">'.$lt{'dl'}.'</span></a>');
1495:
1496: # icon for saving changes
1497: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1498: 'onclick="setFormAction('."'saveOK','".$mode."'".'); " class="LC_menubuttons_link">'.
1499: '<img src="/res/adm/pages/save-22x22.png" alt="'.$lt{'sv'}.'" '.
1500: 'title="'.$lt{'sv'}.'" class="LC_icon" />'.
1501: '<span class="LC_menubuttons_inline_text">'.$lt{'sv'}.'</span></a>');
1502:
1503: # end funtionlist and generate subbox
1504: $functions.= &Apache::lonhtmlcommon::end_funclist();
1505: my $subbox = &Apache::loncommon::head_subbox($functions);
1506:
1507: # start form
1508: my $inner .= '<form name="list" action ="/adm/wishlist" method="post">'.
1509: '<input type="hidden" id="action" name="action" value=""/>';
1510:
1511: # only display subbox in view- or edit-mode
1512: if ($mode eq 'view' || $mode eq 'edit') {
1513: $inner .= $subbox;
1514: }
1515:
1516: # generate table-content depending on mode
1517: if ($mode eq 'edit') {
1518: &wishlistEdit(\@childrenRt);
1519: if ($wishlistHTMLedit ne '') {
1520: $inner .= &Apache::loncommon::start_data_table("LC_tableOfContent");
1521: $inner .= $wishlistHTMLedit;
1522: $inner .= &Apache::loncommon::end_data_table();
1523: }
1524: else {
1525: $inner .= '<span class="LC_info">'.&mt("Your wishlist ist currently empty.").'</span>';
1526: }
1527: $wishlistHTMLedit = '';
1528: }
1529: elsif ($mode eq 'view') {
1530: &wishlistView(\@childrenRt);
1531: if ($wishlistHTMLview ne '') {
1532: $inner .= '<table class="LC_data_table LC_tableOfContent">'.$wishlistHTMLview.'</table>';
1533: }
1534: else {
1535: $inner .= '<span class="LC_info">'.&mt("Your wishlist ist currently empty.").'</span>';
1536: }
1537: $wishlistHTMLview = '';
1538: }
1539: else {
1540: my $markStr = '';
1541: foreach my $m (@$marked) {
1542: $markStr .= $m.',';
1543: }
1544: if ($markStr) {
1545: $markStr = substr($markStr, 0, length($markStr)-1);
1546: $inner .= '<input type="hidden" value="'.$markStr.'" name="markedToMove"/>';
1547: $inner .= '<p><span class="LC_info">'.&mt('You have selected the red marked entries to be moved to another folder. '.
1548: 'Now choose the new destination folder.').'</span></p>';
1549: &wishlistMove(\@childrenRt, $marked);
1550: $inner .= '<table class="LC_data_table LC_tableOfContent">'.$wishlistHTMLmove.'</table><br/><br/>';
1551: $inner .= '<input type="button" value="'.&mt('Move').'" onclick="setFormAction('."'move','view'".');"/>'.
1552: '<input type="button" value="'.&mt('Cancel').'" onclick="go('."'/adm/wishlist'".')"/>';
1553:
1554: $wishlistHTMLmove ='<tr id="root" class="LC_odd_row"><td><input type="radio" name="mark" id="radioRoot" value="root" /></td>'.
1555: '<td>'.&mt('Top level').'</td><td></td></tr>';
1556: }
1557: else {
1558: $inner .= '<p><span class="LC_info">'.&mt("You haven't marked any entry to move.").'</span></p>'.
1559: '<input type="button" value="'.&mt('Back').'" onclick="go('."'/adm/wishlist'".')"/>';
1560: }
1561: }
1562:
1563: # end form
1564: $inner .= '</form>';
1565:
1566: # end_page
1567: my $endPage = &Apache::loncommon::end_page();
1568:
1569: # put all page-elements together
1570: my $page = $startPage.$breadcrumbs.$js.$inner.$endPage;
1571:
1572: return $page;
1573: }
1574:
1575:
1576: # Returns the HTML-Markup for the page, shown when a link was set
1577: sub makePageSet {
1578: # start_page
1579: my $startPage = &Apache::loncommon::start_page('Wishlist',undef,
1580: {'only_body' => 1});
1581:
1582: # confirm success and offer link to wishlist
1583: my $message = &Apache::lonhtmlcommon::confirm_success(&mt('Link successfully set!'));
1584: $message = &Apache::loncommon::confirmwrapper($message);
1585:
1586: my $inner .= '<br>'.$message.'<br/><br/>'.
1587: '<a href="javascript:;" onclick="opener.open('."'/adm/wishlist'".');window.close();">'.&mt('Go to wishlist').'</a>'.
1588: ' <a href="javascript:;" onclick="window.close();">'.&mt('Close this window').'</a>';
1589:
1590: # end_page
1591: my $endPage = &Apache::loncommon::end_page();
1592:
1593: # put all page-elements together
1594: my $page = $startPage.$inner.$endPage;
1595:
1596: return $page;
1597: }
1598:
1599:
1600: # Returns the HTML-Markup for the page, shown when links should be imported into a course
1601: sub makePageImport {
1602: # start_page
1603: my $startPage = &Apache::loncommon::start_page('Wishlist',undef,
1604: {'only_body' => 1});
1605:
1606: # get javascript-code for wishlist-interactions
1607: my $js = &JSforWishlist();
1608:
1609: my $inner = '<h1>'.&mt('Import Resources from Wishlist').'</h1>';
1610: $inner .= '<p><span class="LC_info">'.&mt("Please note that you can use the checkboxes corresponding to a folder to ".
1611: "easily check all links within this folder. The folder structure itself can't be imported. ".
1612: "All checked links will be imported into the current folder of your course.").'</span></p>';
1613:
1614: my %wishlist = &getWishlist();
1615: my $fnum = (keys %wishlist)-1;
1616:
1617: $inner .= '<form method="post" name="groupsort">'.
1618: '<input type="hidden" value="'.$fnum.'" name="fnum">'.
1619: '<input type="button" onclick="javascript:checkAll()" id="checkallbutton" value="'.&mt('Check All').'">'.
1620: '<input type="button" onclick="javascript:uncheckAll()" id="uncheckallbutton" value="'.&mt('Uncheck All').'">'.
1621: '<input type="button" value="'.&mt('Import Checked').'" onclick="finish_import();">'.
1622: '<input type="button" value="'.&mt('Cancel').'" onclick="window.close();"><br/><br/>';
1623:
1624:
1625: # wishlist-table
1626: &wishlistImport(\@childrenRt);
1627: if ($wishlistHTMLimport ne '') {
1628: $inner .= '<table class="LC_data_table LC_tableOfContent">'.$wishlistHTMLimport.'</table>';
1629: }
1630: else {
1631: $inner .= '<span class="LC_info">'.&mt("Your wishlist ist currently empty.").'</span>';
1632: }
1633: $wishlistHTMLimport = '';
1634:
1635: $inner .= '</form>';
1636:
1637: # end_page
1638: my $endPage = &Apache::loncommon::end_page();
1639:
1640: # put all page-elements together
1641: my $page = $startPage.$js.$inner.$endPage;
1642:
1643: return $page;
1644: }
1645:
1646:
1647: # Returns the HTML-Markup for error-page
1648: sub makeErrorPage {
1649: # breadcrumbs and start_page
1650: &Apache::lonhtmlcommon::add_breadcrumb(
1651: { href => '/adm/wishlist',
1652: text => 'Wishlist'});
1653: my $startPage = &Apache::loncommon::start_page('Wishlist');
1654:
1655: my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs('Wishlist '.
1656: '<a title="Online-Hilfe" href="/adm/help/Wishlist.hlp" target="_top">'.
1657: '<img src="/adm/help/help.png" alt="'.&mt('Help').'" '.
1658: 'title="'.&mt('Help').'" class="LC_icon" /></a>');
1659: &Apache::lonhtmlcommon::clear_breadcrumbs();
1660:
1661: # error-message
1662: my $inner .= '<span class="LC_error">'.&mt('An error occurred! Please try again later.').'</span>';
1663:
1664: # end_page
1665: my $endPage = &Apache::loncommon::end_page();
1666:
1667: # put all page-elements together
1668: my $page = $startPage.$breadcrumbs.$inner.$endPage;
1669:
1670: return $page;
1671: }
1672:
1673: # ----------------------------------------------------- Main Handler, package lonwishlist
1674: sub handler {
1675: my ($r) = @_;
1676: &Apache::loncommon::content_type($r,'text/html');
1677: $r->send_http_header;
1678:
1679: if (&getWishlist() ne 'error') {
1680: # get wishlist entries from user-data db-file and build a tree out of these entries
1681: %TreeHash = &getWishlist();
1682: $root = &Tree::HashToTree();
1683: @childrenRt = $root->children();
1684:
1685: # greate a new entry
1686: if ($env{'form.title'}) {
1687: &newEntry($env{'form.title'}, $env{'form.path'}, $env{'form.note'});
1688: }
1689:
1690: # get unprocessed_cgi (i.e. marked entries, mode ...)
1691: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['action','mark','markedToMove','mode','newtitle','note']);
1692:
1693: # change the order of entries within a level, that means sorting the entries
1694: my $changeOrder = 0;
1695: if (defined $env{'form.sel'}) {
1696: my @sel = &Apache::loncommon::get_env_multiple('form.sel');
1697: my $indexNode;
1698: my $at;
1699: for (my $s=0; $s<($#sel+1); $s++) {
1700: if ($sel[$s] ne '') {
1701: $indexNode = $s;
1702: $at = $sel[$s]-1;
1703: }
1704: }
1705: if ($at ne '') {
1706: $changeOrder = 1;
1707: &sortEntries($indexNode,$at);
1708: &saveChanges();
1709: }
1710: }
1711:
1712: # get all marked (checkboxes) entries
1713: my @marked = ();
1714: if (defined $env{'form.mark'}) {
1715: @marked = &Apache::loncommon::get_env_multiple('form.mark');
1716: }
1717:
1718: # move entries from one folder to another
1719: if (defined $env{'form.markedToMove'}) {
1720: my $markedToMove = $env{'form.markedToMove'};
1721: my @ToMove = split(/\,/,$markedToMove);
1722: my $moveTo = $env{'form.mark'};
1723: if (defined $moveTo){
1724: &moveEntries(\@ToMove,$moveTo);
1725: &saveChanges();
1726: }
1727: $changeOrder = 1;
1728:
1729: }
1730:
1731: # delete entries
1732: if ($env{'form.action'} eq 'delete') {
1733: &deleteEntries(\@marked);
1734: }
1735:
1736:
1737: # get all titles and notes and save them
1738: # only save, if user wants to save changes
1739: # do not save, when current action is 'delete' or 'sort' or 'move'
1740: my @newTitles = ();
1741: my @newPaths = ();
1742: my @newNotes = ();
1743: if ((defined $env{'form.newtitle'} || defined $env{'form.newpath'} || defined $env{'form.newnote'})
1744: && ($env{'form.action'} ne 'noSave') && ($env{'form.action'} ne 'delete') && !$changeOrder) {
1745: @newTitles = &Apache::loncommon::get_env_multiple('form.newtitle');
1746: @newPaths = &Apache::loncommon::get_env_multiple('form.newpath');
1747: @newNotes = &Apache::loncommon::get_env_multiple('form.newnote');
1748: my $node = 0;
1749: foreach my $t (@newTitles) {
1750: &setNewTitle($node, $t);
1751: $node++;
1752: }
1753: $node = 0;
1754: my $path = 0;
1755: for (my $i = 0; $i < ($#newTitles+1); $i++ ) {
1756: if (&setNewPath($node, $newPaths[$path])) {
1757: $path++;
1758: }
1759: $node++;
1760: }
1761: $node = 0;
1762: foreach my $n (@newNotes) {
1763: &setNewNote($node, $n);
1764: $node++;
1765: }
1766: &saveChanges();
1767: }
1768:
1769: # Create HTML-markup
1770: my $page;
1771: if ($env{'form.mode'} eq 'edit') {
1772: $page = &makePage("edit");
1773: }
1774: elsif ($env{'form.mode'} eq 'move') {
1775: $page = &makePage("move", \@marked);
1776: }
1777: elsif ($env{'form.mode'} eq 'import') {
1778: $page = &makePageImport();
1779: }
1780: elsif ($env{'form.mode'} eq 'set') {
1781: $page = &makePageSet();
1782: }
1783: else {
1784: $page = &makePage("view");
1785: }
1786: @marked = ();
1787: $r->print($page);
1788: }
1789: # An error occured, print an error-page
1790: else {
1791: my $errorPage = &makeErrorPage();
1792: $r->print($errorPage);
1793: }
1794: return OK;
1795: }
1796:
1797: # ----------------------------------------------------- package Tree
1798: # Extend CPAN-Module Tree by function like 'moveNode' or 'deleteNode'
1799: package Tree;
1800:
1801: =pod
1802:
1803: =head2 Routines from package Tree
1804:
1805: =over 4
1806:
1807: =item * &getNodeByIndex(index, nodes)
1808:
1809: Searches for a node, specified by the index, in nodes (reference to array) and returns it.
1810:
1811:
1812: =item * &moveNode(node, at, newParent)
1813:
1814: Moves a given node to a new parent (if new parents is defined) or change the position from a node within its siblings (means sorting, at must be defined).
1815:
1816:
1817: =item * &removeNode(node)
1818:
1819: Removes a node given by node from the tree.
1820:
1821:
1822: =item * &TreeIndex(children)
1823:
1824: Sets an index for every node in the tree, beginning with 0.
1825: Recursive call starting with all children of the root of the tree (parameter children is reference to an array containing the nodes of the current level).
1826:
1827:
1828: =item * &setCountZero()
1829:
1830: Resets index counter.
1831:
1832:
1833: =item * &RootToHash(childrenRt)
1834:
1835: Converts the root-node to a hash-entry: the key is root and values are just the indices of root's children.
1836:
1837:
1838: =item * &TreeToHash(childrenRt)
1839:
1840: Converts all other nodes in the tree to hash. Each node is one hash-entry where the keys are the index of a node and the values are all other attributes (containing tile, path, note, date and indices for all direct children).
1841: Recursive call starting with all children of the root of the tree (parameter childrenRT is reference to an array containing the nodes of the current level).
1842:
1843:
1844: =item * &HashToTree()
1845:
1846: Converts the hash to a tree. Builds a tree-object for each entry in the hash. Afterwards call &buildTree(node, childrenIn, TreeNodes, TreeHash) to connect the tree-objects.
1847:
1848:
1849: =item * &buildTree(node, childrenIn, TreeNodes, TreeHash)
1850:
1851: Joins the nodes to a tree.
1852: Recursive call starting with root and all children of root (parameter childrenIn is reference to an array containing the nodes indices of the current level).
1853:
1854:
1855: =back
1856:
1857: =cut
1858:
1859:
1860: # returns the node with a given index from a list of nodes
1861: sub getNodeByIndex {
1862: my $index = shift;
1863: my $nodes = shift;
1864: my $found;
1865:
1866: for my $n (@$nodes) {
1867: my $curIndex = $n->value()->nindex();
1868: if ($n->value()->nindex() == $index) {
1869: $found = $n;
1870: }
1871: }
1872: return $found;
1873: }
1874:
1875: # moves a given node to a new parent or change the position from a node
1876: # within its siblings (sorting)
1877: sub moveNode {
1878: my $node = shift;
1879: my $at = shift;
1880: my $newParent = shift;
1881:
1882:
1883: if (!$newParent) {
1884: $newParent = $node->parent();
1885: }
1886:
1887: $node->parent()->remove_child($node);
1888:
1889: if (defined $at) {
1890: $newParent->add_child({at => $at},$node);
1891: }
1892: else {
1893: $newParent->add_child($node);
1894: }
1895:
1896: # updating root's children
1897: @childrenRt = $root->children();
1898: }
1899:
1900: # removes a given node
1901: sub removeNode() {
1902: my $node = shift;
1903: my @children = $node->children();
1904:
1905: if ($#children >= 0) {
1906: foreach my $c (@children) {
1907: &removeNode($c);
1908: }
1909: }
1910: $node->parent()->remove_child($node);
1911:
1912: # updating root's children
1913: @childrenRt = $root->children();
1914: }
1915:
1916:
1917: # set an index for every node in the tree, beginning with 0
1918: my $count = 0;
1919: sub TreeIndex {
1920: my $children = shift;
1921:
1922: foreach my $n (@$children) {
1923: my @children = $n->children();
1924: $n->value()->nindex($count);$count++;
1925:
1926: if ($#children>=0) {
1927: &TreeIndex(\@children);
1928: }
1929: }
1930: }
1931:
1932: # reset index counter
1933: sub setCountZero {
1934: $count = 0;
1935: }
1936:
1937:
1938: # convert the tree to a hash
1939: # each node is one hash-entry
1940: # keys are the indices, values are all other attributes
1941: # (containing tile, path, note, date and indices for all direct children)
1942: # except for root: the key is root and values are
1943: # just the indices of root's children
1944: sub RootToHash {
1945: my $childrenRt = shift;
1946: my @indexarr = ();
1947:
1948: foreach my $c (@$childrenRt) {
1949: push (@indexarr, $c->value()->nindex());
1950: }
1951: $TreeToHash{'root'} = [@indexarr];
1952: }
1953:
1954: sub TreeToHash {
1955: my $childrenRt = shift;
1956:
1957: foreach my $n (@$childrenRt) {
1958: my @arrtmp = ();
1959: $arrtmp[0] = $n->value()->title();
1960: $arrtmp[1] = $n->value()->path();
1961: $arrtmp[2] = $n->value()->note();
1962: $arrtmp[3] = $n->value()->date();
1963: my @childrenRt = $n->children();
1964: my $co = 4;
1965: foreach my $c (@childrenRt) {
1966: my $i = $c->value()->nindex();
1967: $arrtmp[$co] = $i;
1968: $co++;
1969: }
1970: $TreeToHash{$n->value()->nindex} = [ @arrtmp];
1971: if ($#childrenRt>=0) {
1972: &TreeToHash(\@childrenRt);
1973: }
1974: }
1975: }
1976:
1977:
1978: # convert the hash to a tree
1979: # build a tree-object for each entry in the hash
1980: # afterwards call &buildTree to connect the tree-objects
1981: sub HashToTree {
1982: my @TreeNodes = ();
1983: my $root;
1984:
1985: foreach my $key (keys %TreeHash) {
1986: if ($key eq 'root') {
1987: $root = Tree->new("root");
1988: }
1989: else {
1990: my @attributes = @{ $TreeHash{$key} };
1991: my $tmpNode;
1992: $tmpNode = Tree->new(Entry->new(title=>$attributes[0],
1993: path=>$attributes[1],
1994: note=>$attributes[2],
1995: date=>$attributes[3],
1996: nindex=>$key));
1997: push(@TreeNodes, $tmpNode);
1998: # shift all attributes except for
1999: # the indices representing the children of a node
2000: shift(@attributes);
2001: shift(@attributes);
2002: shift(@attributes);
2003: shift(@attributes);
2004: $TreeHash{$key} = [ @attributes ];
2005: }
2006: }
2007: # if there are nodes, build up the tree-structure
2008: if (defined $TreeHash{'root'} && $TreeHash{'root'} ne '') {
2009: my @childrenRtIn = @{ $TreeHash{'root'} };
2010: &buildTree(\$root, \@childrenRtIn,\@TreeNodes,\%TreeHash);
2011: }
2012: return $root;
2013: }
2014:
2015:
2016: # join the nodes to a tree
2017: sub buildTree {
2018: my ($node, $childrenIn, $TreeNodes, $TreeHash) = @_;
2019: bless($node, 'Tree');
2020: foreach my $c (@$childrenIn) {
2021: my $tmpNode = &getNodeByIndex($c,$TreeNodes);
2022: $$node->add_child($tmpNode);
2023: my @childrenIn = @{ $$TreeHash{$tmpNode->value()->nindex()} };
2024: &buildTree(\$tmpNode,\@childrenIn,$TreeNodes,$TreeHash);
2025: }
2026:
2027: }
2028:
2029:
2030: # ----------------------------------------------------- package Entry
2031: # package that defines the entrys a wishlist could have
2032: # i.e. folders and links
2033: package Entry;
2034:
2035: # constructor
2036: sub new {
2037: my $invocant = shift;
2038: my $class = ref($invocant) || $invocant;
2039: my $self = { @_ }; #set attributes
2040: bless($self, $class);
2041: return $self;
2042: }
2043:
2044: # getter and setter
2045: sub title {
2046: my $self = shift;
2047: if ( @_ ) { $self->{title} = shift}
2048: return $self->{title};
2049: }
2050:
2051: sub date {
2052: my $self = shift;
2053: if ( @_ ) { $self->{date} = shift}
2054: return $self->{date};
2055: }
2056:
2057: sub note {
2058: my $self = shift;
2059: if ( @_ ) { $self->{note} = shift}
2060: return $self->{note};
2061: }
2062:
2063: sub path {
2064: my $self = shift;
2065: if ( @_ ) { $self->{path} = shift}
2066: return $self->{path};
2067: }
2068:
2069: sub nindex {
2070: my $self = shift;
2071: if ( @_ ) { $self->{nindex} = shift}
2072: return $self->{nindex};
2073: }
2074:
2075:
2076: 1;
2077: __END__
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