1: # The LearningOnline Network with CAPA
2: # Routines to control the wishlist
3: #
4: # $Id: lonwishlist.pm,v 1.7 2010/08/20 10:38:41 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 checkAll() {
1070: var checkboxes = document.getElementsByName('check');
1071: for (var i = 0; i < checkboxes.length; i++) {
1072: checkboxes[i].checked = "checked";
1073: }
1074: }
1075:
1076: function uncheckAll() {
1077: var checkboxes = document.getElementsByName('check');
1078: for (var i = 0; i < checkboxes.length; i++) {
1079: checkboxes[i].checked = "";
1080: }
1081: }
1082:
1083: JAVASCRIPT
1084: return $js;
1085: }
1086:
1087: sub JSforImport{
1088: my $rat = shift;
1089:
1090: my $js;
1091: if ($rat eq 'simple' || $rat eq '') {
1092: $js = &Apache::lonhtmlcommon::scripttag(<<JAVASCRIPT);
1093: function finish_import() {
1094: opener.document.forms.simpleedit.importdetail.value='';
1095: for (var num = 0; num < document.forms.groupsort.fnum.value; num++) {
1096: if (eval("document.forms.groupsort.check"+num+".checked") && eval("document.forms.groupsort.filelink"+num+".value") != '') {
1097: opener.document.forms.simpleedit.importdetail.value+='&'+
1098: eval("document.forms.groupsort.title"+num+".value")+'='+
1099: eval("document.forms.groupsort.filelink"+num+".value")+'='+
1100: eval("document.forms.groupsort.id"+num+".value");
1101: }
1102: }
1103: opener.document.forms.simpleedit.submit();
1104: self.close();
1105: }
1106: JAVASCRIPT
1107: }
1108: else {
1109: $js = &Apache::lonhtmlcommon::scripttag(<<JAVASCRIPT);
1110: function finish_import() {
1111: var linkflag=false;
1112: for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
1113: if (eval("document.forms.groupsort.check"+num+".checked") && eval("document.forms.groupsort.filelink"+num+".value") != '') {
1114: insertRowInLastRow();
1115: placeResourceInLastRow(
1116: eval("document.forms.groupsort.title"+num+".value"),
1117: eval("document.forms.groupsort.filelink"+num+".value"),
1118: eval("document.forms.groupsort.id"+num+".value"),
1119: linkflag
1120: );
1121: linkflag=true;
1122: }
1123: }
1124: opener.editmode=0;
1125: opener.notclear=0;
1126: opener.linkmode=0;
1127: opener.draw();
1128: self.close();
1129: }
1130:
1131: function insertRowInLastRow() {
1132: opener.insertrow(opener.maxrow);
1133: opener.addobj(opener.maxrow,'e&2');
1134: }
1135:
1136: function placeResourceInLastRow (title,url,id,linkflag) {
1137: opener.mostrecent=opener.newresource(opener.maxrow,2,opener.unescape(title),
1138: opener.unescape(url),'false','normal',id);
1139: opener.save();
1140: if (linkflag) {
1141: opener.joinres(opener.linkmode,opener.mostrecent,0);
1142: }
1143: opener.linkmode=opener.mostrecent;
1144: }
1145: JAVASCRIPT
1146: }
1147: return $js;
1148: }
1149:
1150: # HTML-Markup for table if in view-mode
1151: my $wishlistHTMLview;
1152: my $indent = $indentConst;
1153: sub wishlistView {
1154: my $nodes = shift;
1155:
1156: foreach my $n (@$nodes) {
1157: my $index = $n->value()->nindex();
1158:
1159: # 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.
1160: # only display the top level entries on load
1161: $wishlistHTMLview .= ($n->parent()->value() eq 'root')?&Apache::loncommon::start_data_table_row('','row'.$index)
1162: :&Apache::loncommon::continue_data_table_row('LC_hidden','row'.$index);
1163:
1164:
1165: # checkboxes
1166: $wishlistHTMLview .= '<td><input type="checkbox" name="mark" id="check'.$index.'" value="'.$index.'" '.
1167: 'onclick="selectAction('."'row".$index."'".')"/></td>';
1168:
1169: # entry is a folder
1170: if ($n->value()->path() eq '') {
1171: $wishlistHTMLview .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;">'.
1172: '<a href="javascript:;" onclick="folderAction('."'row".$index."'".')" style="vertical-align:top">'.
1173: '<img src="/adm/lonIcons/arrow.closed.gif" id="img'.$index.'" alt = "" class="LC_icon"/>'.
1174: '<img src="/adm/lonIcons/navmap.folder.closed.gif" id="imgFolder'.$index.'" alt="folder"/>'.
1175: $n->value()->title().'</a></td>';
1176: }
1177: # entry is a link
1178: else {
1179: $wishlistHTMLview .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px; min-width: 220px;">'.
1180: '<a href="javascript:preview('."'".$n->value()->path()."'".');">'.
1181: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link" />'.
1182: $n->value()->title().'</a></td>';
1183: }
1184:
1185: # note-icon, different icons for an entries with note and those without
1186: my $noteIMG = 'anot.png';
1187:
1188: if ($n->value()->note() ne '') {
1189: $noteIMG = 'anot2.png';
1190: }
1191:
1192: $wishlistHTMLview .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1193: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1194: ' class="LC_icon"/></a></td>';
1195:
1196: $wishlistHTMLview .= &Apache::loncommon::end_data_table_row();
1197:
1198: # start row containing the textarea for the note, do not display note on default
1199: $wishlistHTMLview .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1200: '<td></td><td>'.
1201: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1202: 'name="newnote" >'.
1203: $n->value()->note().'</textarea></td><td></td>';
1204: $wishlistHTMLview .= &Apache::loncommon::end_data_table_row();
1205:
1206: # if the entry is a folder, it could have other entries as content. if it has, call wishlistView for those entries
1207: my @children = $n->children();
1208: if ($#children >=0) {
1209: $indent += 20;
1210: &wishlistView(\@children);
1211: $indent -= 20;
1212: }
1213: }
1214: }
1215:
1216:
1217: # HTML-Markup for table if in edit-mode
1218: my $wishlistHTMLedit;
1219: my $indent = $indentConst;
1220: sub wishlistEdit {
1221: my $nodes = shift;
1222: my $curNode = 1;
1223:
1224: foreach my $n (@$nodes) {
1225: my $index = $n->value()->nindex();
1226:
1227: # start row, use data_table routines to set class to LC_even or LC_odd automatically.
1228: # this rows contains a checkbox, a select-field for sorting entries, the title in an input-field and the note-icon.
1229: # only display the top level entries on load
1230: $wishlistHTMLedit .= ($n->parent()->value() eq 'root')?&Apache::loncommon::start_data_table_row('','row'.$index)
1231: :&Apache::loncommon::continue_data_table_row('LC_hidden','row'.$index);
1232:
1233: # checkboxes
1234: $wishlistHTMLedit .= '<td><input type="checkbox" name="mark" id="check'.$index.'" value="'.$index.'" '.
1235: 'onclick="selectAction('."'row".$index."'".')"/></td>';
1236:
1237: # 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.
1238: # set the number for the current entry into brackets
1239: my $options;
1240: for (my $i = 1; $i < ((scalar @{$nodes})+1); $i++) {
1241: if ($i == $curNode) {
1242: $options .= '<option selected="selected" value="">('.$i.')</option>';
1243: }
1244: else {
1245: $options .= '<option value="'.$i.'">'.$i.'</option>';
1246: }
1247: }
1248: $curNode++;
1249:
1250: # entry is a folder
1251: if ($n->value()->path() eq '') {
1252: $wishlistHTMLedit .= '<td><select class="LC_hidden" name="sel" id="sel'.$index.'" onchange="submitSelect();">'.
1253: $options.'</select></td>'.
1254: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px;">'.
1255: '<a href="javascript:;" onclick="folderAction('."'row".$index."'".')" style="vertical-align:top" >'.
1256: '<img src="/adm/lonIcons/arrow.closed.gif" id="img'.$index.'" alt = "" class="LC_icon"/>'.
1257: '<img src="/adm/lonIcons/navmap.folder.closed.gif" id="imgFolder'.$index.'" alt="folder"/></a>'.
1258: '<input type="text" name="newtitle" value="'.$n->value()->title().'" alt = "'.$n->value()->title().'"/>'.
1259: '</td><td></td>';
1260:
1261: }
1262: # entry is a link
1263: else {
1264: $wishlistHTMLedit .= '<td><select class="LC_hidden" name="sel" id="sel'.$index.'" onchange="submitSelect();">'.
1265: $options.'</select></td>'.
1266: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px;">'.
1267: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link"/>'.
1268: '<input type="text" name="newtitle" value="'.$n->value()->title().'" alt = "'.$n->value()->title().'"/></td>'.
1269: '<td><input type="text" name="newpath" value="'.$n->value()->path().'" alt = "'.$n->value()->path().'"/></td>';
1270: }
1271:
1272: # note-icon, different icons for an entries with note and those without
1273: my $noteIMG = 'anot.png';
1274:
1275: if ($n->value()->note() ne '') {
1276: $noteIMG = 'anot2.png';
1277: }
1278:
1279: $wishlistHTMLedit .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1280: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1281: ' class="LC_icon"/></a></td>';
1282:
1283: $wishlistHTMLedit .= &Apache::loncommon::end_data_table_row();
1284:
1285: # start row containing the textarea for the note
1286: $wishlistHTMLedit .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1287: '<td></td><td></td><td colspan="2">'.
1288: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1289: 'name="newnote">'.
1290: $n->value()->note().'</textarea></td><td></td>';
1291: $wishlistHTMLedit .= &Apache::loncommon::end_data_table_row();
1292:
1293: # if the entry is a folder, it could have other entries as content. if it has, call wishlistEdit for those entries
1294: my @children = $n->children();
1295: if ($#children >=0) {
1296: $indent += 20;
1297: &wishlistEdit(\@children);
1298: $indent -= 20;
1299: }
1300: }
1301: }
1302:
1303:
1304:
1305: # HTML-Markup for table if in move-mode
1306: my $wishlistHTMLmove ='<tr id="root" class="LC_odd_row"><td><input type="radio" name="mark" id="radioRoot" value="root" /></td>'.
1307: '<td>'.&mt('Top level').'</td><td></td></tr>';
1308: my $indent = $indentConst;
1309: sub wishlistMove {
1310: my $nodes = shift;
1311: my $marked = shift;
1312:
1313: foreach my $n (@$nodes) {
1314: my $index = $n->value()->nindex();
1315:
1316: #find out wether the current entry was marked to be moved.
1317: my $isIn = 0;
1318: foreach my $m (@$marked) {
1319: if ($index == $m) {
1320: $isIn = 1;
1321: }
1322: }
1323: # 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
1324: $wishlistHTMLmove .= &Apache::loncommon::start_data_table_row('','row'.$index);
1325:
1326:
1327: # entry is a folder
1328: if ($n->value()->path() eq '') {
1329: # display a radio-button, if the folder was not selected to be moved
1330: if (!$isIn) {
1331: $wishlistHTMLmove .= '<td><input type="radio" name="mark" id="radio'.$index.'" value="'.$index.'" /></td>'.
1332: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;">';
1333: }
1334: # higlight the title, if the folder was selected to be moved
1335: else {
1336: $wishlistHTMLmove .= '<td></td>'.
1337: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;'.
1338: 'color:red;">';
1339: }
1340: #arrow- and folder-image, all folders are open, and title
1341: $wishlistHTMLmove .= '<img src="/adm/lonIcons/arrow.open.gif" id="img'.$index.'" alt = "" />'.
1342: '<img src="/adm/lonIcons/navmap.folder.open.gif" id="imgFolder'.$index.'" alt="folder"/>'.
1343: $n->value()->title().'</td>';
1344: }
1345: # entry is a link
1346: else {
1347: # higlight the title, if the link was selected to be moved
1348: my $highlight = '';
1349: if ($isIn) {
1350: $highlight = 'style="color:red;"';
1351: }
1352: # link-image and title
1353: $wishlistHTMLmove .= '<td></td>'.
1354: '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px; min-width: 220px;">'.
1355: '<a href="javascript:preview('."'".$n->value()->path()."'".');" '.$highlight.'>'.
1356: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link"/>'.
1357: $n->value()->title().'</a></td>';
1358: }
1359:
1360: # note-icon, different icons for an entries with note and those without
1361: my $noteIMG = 'anot.png';
1362:
1363: if ($n->value()->note() ne '') {
1364: $noteIMG = 'anot2.png';
1365: }
1366:
1367: $wishlistHTMLmove .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1368: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1369: ' class="LC_icon"/></a></td>';
1370:
1371: $wishlistHTMLmove .= &Apache::loncommon::end_data_table_row();
1372:
1373: # start row containing the textarea for the note, readonly in move-mode
1374: $wishlistHTMLmove .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1375: '<td></td><td>'.
1376: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1377: 'name="newnote" readonly="readonly">'.
1378: $n->value()->note().'</textarea></td><td></td>'.
1379: &Apache::loncommon::end_data_table_row();
1380:
1381: # if the entry is a folder, it could have other entries as content. if it has, call wishlistMove for those entries
1382: my @children = $n->children();
1383: if ($#children >=0) {
1384: $indent += 20;
1385: &wishlistMove(\@children, $marked);
1386: $indent -= 20;
1387: }
1388: }
1389: }
1390:
1391:
1392:
1393: # HTML-Markup for table if in import-mode
1394: my $wishlistHTMLimport;
1395: my $indent = $indentConst;
1396: my $form = 1;
1397: sub wishlistImport {
1398: my $nodes = shift;
1399:
1400: foreach my $n (@$nodes) {
1401: my $index = $n->value()->nindex();
1402:
1403: # 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.
1404: # only display the top level entries on load
1405: $wishlistHTMLimport .= ($n->parent()->value() eq 'root')?&Apache::loncommon::start_data_table_row('','row'.$index)
1406: :&Apache::loncommon::continue_data_table_row('LC_hidden','row'.$index);
1407:
1408:
1409: # checkboxes
1410: $wishlistHTMLimport .= '<td>'.
1411: '<input type="checkbox" name="check" id="check'.$index.'" value="'.$index.'" '.
1412: 'onclick="selectAction('."'row".$index."'".')"/>'.
1413: '<input type="hidden" name="title'.$index.'" value="'.&escape($n->value()->title()).'">'.
1414: '<input type="hidden" name="filelink'.$index.'" value="'.&escape($n->value()->path()).'">'.
1415: '<input type="hidden" name="id'.$index.'">'.
1416: '</td>';
1417:
1418: # entry is a folder
1419: if ($n->value()->path() eq '') {
1420: $wishlistHTMLimport .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<0?0:($indent-$indentConst)).'px; min-width: 220px;">'.
1421: '<a href="javascript:;" onclick="folderAction('."'row".$index."'".')" style="vertical-align:top">'.
1422: '<img src="/adm/lonIcons/arrow.closed.gif" id="img'.$index.'" alt = "" class="LC_icon"/>'.
1423: '<img src="/adm/lonIcons/navmap.folder.closed.gif" id="imgFolder'.$index.'" alt="folder"/>'.
1424: $n->value()->title().'</a></td>';
1425: }
1426: # entry is a link
1427: else {
1428: $wishlistHTMLimport .= '<td id="padd'.$index.'" style="padding-left:'.(($indent-$indentConst)<=0?$indentConst:$indent).'px; min-width: 220px;">'.
1429: '<a href="javascript:preview('."'".$n->value()->path()."'".');">'.
1430: '<img src="/res/adm/pages/wishlist-link.png" id="img'.$index.'" alt="link" />'.
1431: $n->value()->title().'</a></td>';
1432: $form++;
1433: }
1434:
1435: # note-icon, different icons for an entries with note and those without
1436: my $noteIMG = 'anot.png';
1437:
1438: if ($n->value()->note() ne '') {
1439: $noteIMG = 'anot2.png';
1440: }
1441:
1442: $wishlistHTMLimport .= '<td style="padding-left:10px;"><a href="javascript:;" onclick="setDisplayNote('."'note".$index."'".')">'.
1443: '<img id="noteImg'.$index.'" src="/res/adm/pages/'.$noteIMG.'" alt="'.&mt('Note').'" title="'.&mt('Note').'" '.
1444: ' class="LC_icon"/></a></td>';
1445:
1446: $wishlistHTMLimport .= &Apache::loncommon::end_data_table_row();
1447:
1448: # start row containing the textarea for the note, do not display note on default, readonly in import-mode
1449: $wishlistHTMLimport .= &Apache::loncommon::continue_data_table_row('LC_hidden','note'.$index).
1450: '<td></td><td>'.
1451: '<textarea id="noteText'.$index.'" cols="25" rows="3" style="width:100%" '.
1452: 'name="newnote" readonly="readonly">'.
1453: $n->value()->note().'</textarea></td><td></td>';
1454: $wishlistHTMLimport .= &Apache::loncommon::end_data_table_row();
1455:
1456: # if the entry is a folder, it could have other entries as content. if it has, call wishlistImport for those entries
1457: my @children = $n->children();
1458: if ($#children >=0) {
1459: $indent += 20;
1460: &wishlistImport(\@children);
1461: $indent -= 20;
1462: }
1463: }
1464: }
1465:
1466: # Returns the HTML-Markup for wishlist
1467: sub makePage {
1468: my $mode = shift;
1469: my $marked = shift;
1470:
1471: # breadcrumbs and start_page
1472: &Apache::lonhtmlcommon::clear_breadcrumbs();
1473: &Apache::lonhtmlcommon::add_breadcrumb(
1474: { href => '/adm/wishlist?mode='.$mode,
1475: text => 'Wishlist'});
1476: my $startPage = &Apache::loncommon::start_page('Wishlist',undef,
1477: {'add_entries' => {
1478: 'onload' => 'javascript:onLoadAction('."'".$mode."'".');',
1479: 'onunload' => 'javascript:window.name = '."'loncapaclient'"}});
1480:
1481: my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs(&mt('Wishlist').&Apache::loncommon::help_open_topic('Wishlist'));
1482:
1483: # get javascript-code for wishlist-interactions
1484: my $js = &JSforWishlist();
1485:
1486: # texthash for items in funtionlist
1487: my %lt = &Apache::lonlocal::texthash(
1488: 'ed' => 'Edit',
1489: 'vw' => 'View',
1490: 'al' => 'Add Link',
1491: 'af' => 'Add Folder',
1492: 'mv' => 'Move Selected',
1493: 'dl' => 'Delete Selected',
1494: 'sv' => 'Save');
1495:
1496: # start functionlist
1497: my $functions = &Apache::lonhtmlcommon::start_funclist();
1498:
1499: # icon for edit-mode, display when in view-mode
1500: if ($mode eq 'view') {
1501: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1502: 'onclick="setFormAction('."'save','edit'".');" class="LC_menubuttons_link">'.
1503: '<img src="/res/adm/pages/edit-mode-22x22.png" alt="'.$lt{'ed'}.'" '.
1504: 'title="'.$lt{'ed'}.'" class="LC_icon"/> '.
1505: '<span class="LC_menubuttons_inline_text">'.$lt{'ed'}.'</span></a>');
1506: }
1507: # icon for view-mode, display when in edit-mode
1508: else {
1509: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1510: 'onclick="setFormAction('."'save','view'".');" class="LC_menubuttons_link">'.
1511: '<img src="/res/adm/pages/view-mode-22x22.png" alt="'.$lt{'vw'}.'" '.
1512: 'title="'.$lt{'vw'}.'" class="LC_icon"/> '.
1513: '<span class="LC_menubuttons_inline_text">'.$lt{'vw'}.'</span></a>');
1514: }
1515:
1516: # icon for adding a new link
1517: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1518: 'onclick="newLink();" class="LC_menubuttons_link">'.
1519: '<img src="/res/adm/pages/link-new-22x22.png" alt="'.$lt{'al'}.'" '.
1520: 'title="'.$lt{'al'}.'" class="LC_icon"/>'.
1521: '<span class="LC_menubuttons_inline_text">'.$lt{'al'}.'</span></a>');
1522:
1523: # icon for adding a new folder
1524: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1525: 'onclick="newFolder();" class="LC_menubuttons_link">'.
1526: '<img src="/res/adm/pages/folder-new-22x22.png" alt="'.$lt{'af'}.'" '.
1527: 'title="'.$lt{'af'}.'" class="LC_icon"/>'.
1528: '<span class="LC_menubuttons_inline_text">'.$lt{'af'}.'</span></a>');
1529:
1530: # icon for moving entries
1531: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1532: 'onclick="setFormAction('."'move','move'".'); " class="LC_menubuttons_link">'.
1533: '<img src="/res/adm/pages/move-22x22.png" alt="'.$lt{'mv'}.'" '.
1534: 'title="'.$lt{'mv'}.'" class="LC_icon" />'.
1535: '<span class="LC_menubuttons_inline_text">'.$lt{'mv'}.'</span></a>');
1536:
1537: # icon for deleting entries
1538: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1539: 'onclick="setFormAction('."'delete','".$mode."'".'); " class="LC_menubuttons_link">'.
1540: '<img src="/res/adm/pages/del.png" alt="'.$lt{'dl'}.'" '.
1541: 'title="'.$lt{'dl'}.'" class="LC_icon" />'.
1542: '<span class="LC_menubuttons_inline_text">'.$lt{'dl'}.'</span></a>');
1543:
1544: # icon for saving changes
1545: $functions .= &Apache::lonhtmlcommon::add_item_funclist('<a href="javascript:;" '.
1546: 'onclick="setFormAction('."'saveOK','".$mode."'".'); " class="LC_menubuttons_link">'.
1547: '<img src="/res/adm/pages/save-22x22.png" alt="'.$lt{'sv'}.'" '.
1548: 'title="'.$lt{'sv'}.'" class="LC_icon" />'.
1549: '<span class="LC_menubuttons_inline_text">'.$lt{'sv'}.'</span></a>');
1550:
1551: # end funtionlist and generate subbox
1552: $functions.= &Apache::lonhtmlcommon::end_funclist();
1553: my $subbox = &Apache::loncommon::head_subbox($functions);
1554:
1555: # start form
1556: my $inner .= '<form name="list" action ="/adm/wishlist" method="post">'.
1557: '<input type="hidden" id="action" name="action" value=""/>';
1558:
1559: # only display subbox in view- or edit-mode
1560: if ($mode eq 'view' || $mode eq 'edit') {
1561: $inner .= $subbox;
1562: }
1563:
1564: # generate table-content depending on mode
1565: if ($mode eq 'edit') {
1566: &wishlistEdit(\@childrenRt);
1567: if ($wishlistHTMLedit ne '') {
1568: $inner .= &Apache::loncommon::start_data_table("LC_tableOfContent");
1569: $inner .= $wishlistHTMLedit;
1570: $inner .= &Apache::loncommon::end_data_table();
1571: }
1572: else {
1573: $inner .= '<span class="LC_info">'.&mt("Your wishlist ist currently empty.").'</span>';
1574: }
1575: $wishlistHTMLedit = '';
1576: }
1577: elsif ($mode eq 'view') {
1578: &wishlistView(\@childrenRt);
1579: if ($wishlistHTMLview ne '') {
1580: $inner .= '<table class="LC_data_table LC_tableOfContent">'.$wishlistHTMLview.'</table>';
1581: }
1582: else {
1583: $inner .= '<span class="LC_info">'.&mt("Your wishlist ist currently empty.").'</span>';
1584: }
1585: $wishlistHTMLview = '';
1586: }
1587: else {
1588: my $markStr = '';
1589: foreach my $m (@$marked) {
1590: $markStr .= $m.',';
1591: }
1592: if ($markStr) {
1593: $markStr = substr($markStr, 0, length($markStr)-1);
1594: $inner .= '<input type="hidden" value="'.$markStr.'" name="markedToMove"/>';
1595: $inner .= '<p><span class="LC_info">'.&mt('You have selected the red marked entries to be moved to another folder. '.
1596: 'Now choose the new destination folder.').'</span></p>';
1597: &wishlistMove(\@childrenRt, $marked);
1598: $inner .= '<table class="LC_data_table LC_tableOfContent">'.$wishlistHTMLmove.'</table><br/><br/>';
1599: $inner .= '<input type="button" value="'.&mt('Move').'" onclick="setFormAction('."'move','view'".');"/>'.
1600: '<input type="button" value="'.&mt('Cancel').'" onclick="go('."'/adm/wishlist'".')"/>';
1601:
1602: $wishlistHTMLmove ='<tr id="root" class="LC_odd_row"><td><input type="radio" name="mark" id="radioRoot" value="root" /></td>'.
1603: '<td>'.&mt('Top level').'</td><td></td></tr>';
1604: }
1605: else {
1606: $inner .= '<p><span class="LC_info">'.&mt("You haven't marked any entry to move.").'</span></p>'.
1607: '<input type="button" value="'.&mt('Back').'" onclick="go('."'/adm/wishlist'".')"/>';
1608: }
1609: }
1610:
1611: # end form
1612: $inner .= '</form>';
1613:
1614: # end_page
1615: my $endPage = &Apache::loncommon::end_page();
1616:
1617: # put all page-elements together
1618: my $page = $startPage.$breadcrumbs.$js.$inner.$endPage;
1619:
1620: return $page;
1621: }
1622:
1623:
1624: # Returns the HTML-Markup for the page, shown when a link was set
1625: sub makePageSet {
1626: # start_page
1627: my $startPage = &Apache::loncommon::start_page('Wishlist',undef,
1628: {'only_body' => 1});
1629:
1630: # confirm success and offer link to wishlist
1631: my $message = &Apache::lonhtmlcommon::confirm_success(&mt('Link successfully set!'));
1632: $message = &Apache::loncommon::confirmwrapper($message);
1633:
1634: my $inner .= '<br>'.$message.'<br/><br/>'.
1635: '<a href="javascript:;" onclick="opener.open('."'/adm/wishlist'".');window.close();">'.&mt('Go to wishlist').'</a>'.
1636: ' <a href="javascript:;" onclick="window.close();">'.&mt('Close this window').'</a>';
1637:
1638: # end_page
1639: my $endPage = &Apache::loncommon::end_page();
1640:
1641: # put all page-elements together
1642: my $page = $startPage.$inner.$endPage;
1643:
1644: return $page;
1645: }
1646:
1647:
1648: # Returns the HTML-Markup for the page, shown when links should be imported into a course
1649: sub makePageImport {
1650: my $rat = shift;
1651: # start_page
1652: my $startPage = &Apache::loncommon::start_page('Wishlist',undef,
1653: {'only_body' => 1});
1654:
1655: # get javascript-code for wishlist-interactions
1656: my $js = &JSforWishlist();
1657: $js .= &JSforImport($rat);
1658:
1659: my $inner = '<h1>'.&mt('Import Resources from Wishlist').'</h1>';
1660: if (!$rat) {
1661: $inner .= '<p><span class="LC_info">'.&mt("Please note that you can use the checkboxes corresponding to a folder to ".
1662: "easily check all links within this folder. The folder structure itself can't be imported. ".
1663: "All checked links will be imported into the current folder of your course.").'</span></p>';
1664: }
1665: else {
1666: $inner .= '<p><span class="LC_info">'.&mt("Please note that you can use the checkboxes corresponding to a folder to ".
1667: "easily check all links within this folder. The folder structure itself can't be imported. ")
1668: .'</span></p>';
1669: }
1670: my %wishlist = &getWishlist();
1671: my $fnum = (keys %wishlist)-1;
1672:
1673: $inner .= '<form method="post" name="groupsort">'.
1674: '<input type="hidden" value="'.$fnum.'" name="fnum">'.
1675: '<input type="button" onclick="javascript:checkAll()" id="checkallbutton" value="'.&mt('Check All').'">'.
1676: '<input type="button" onclick="javascript:uncheckAll()" id="uncheckallbutton" value="'.&mt('Uncheck All').'">'.
1677: '<input type="button" value="'.&mt('Import Checked').'" onclick="finish_import();">'.
1678: '<input type="button" value="'.&mt('Cancel').'" onclick="window.close();"><br/><br/>';
1679:
1680:
1681: # wishlist-table
1682: &wishlistImport(\@childrenRt);
1683: if ($wishlistHTMLimport ne '') {
1684: $inner .= '<table class="LC_data_table LC_tableOfContent">'.$wishlistHTMLimport.'</table>';
1685: }
1686: else {
1687: $inner .= '<span class="LC_info">'.&mt("Your wishlist ist currently empty.").'</span>';
1688: }
1689: $wishlistHTMLimport = '';
1690:
1691: $inner .= '</form>';
1692:
1693: # end_page
1694: my $endPage = &Apache::loncommon::end_page();
1695:
1696: # put all page-elements together
1697: my $page = $startPage.$js.$inner.$endPage;
1698:
1699: return $page;
1700: }
1701:
1702:
1703: # Returns the HTML-Markup for error-page
1704: sub makeErrorPage {
1705: # breadcrumbs and start_page
1706: &Apache::lonhtmlcommon::add_breadcrumb(
1707: { href => '/adm/wishlist',
1708: text => 'Wishlist'});
1709: my $startPage = &Apache::loncommon::start_page('Wishlist');
1710:
1711: my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs(&mt('Wishlist').&Apache::loncommon::help_open_topic('Wishlist'));
1712: &Apache::lonhtmlcommon::clear_breadcrumbs();
1713:
1714: # error-message
1715: my $inner .= '<span class="LC_error">'.&mt('An error occurred! Please try again later.').'</span>';
1716:
1717: # end_page
1718: my $endPage = &Apache::loncommon::end_page();
1719:
1720: # put all page-elements together
1721: my $page = $startPage.$breadcrumbs.$inner.$endPage;
1722:
1723: return $page;
1724: }
1725:
1726: # ----------------------------------------------------- Main Handler, package lonwishlist
1727: sub handler {
1728: my ($r) = @_;
1729: &Apache::loncommon::content_type($r,'text/html');
1730: $r->send_http_header;
1731:
1732: if (&getWishlist() ne 'error') {
1733: # get wishlist entries from user-data db-file and build a tree out of these entries
1734: %TreeHash = &getWishlist();
1735: $root = &Tree::HashToTree();
1736: @childrenRt = $root->children();
1737:
1738: # greate a new entry
1739: if ($env{'form.title'}) {
1740: &newEntry($env{'form.title'}, $env{'form.path'}, $env{'form.note'});
1741: }
1742:
1743: # get unprocessed_cgi (i.e. marked entries, mode ...)
1744: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['action','mark','markedToMove','mode','newtitle','note','rat']);
1745:
1746: # change the order of entries within a level, that means sorting the entries
1747: my $changeOrder = 0;
1748: if (defined $env{'form.sel'}) {
1749: my @sel = &Apache::loncommon::get_env_multiple('form.sel');
1750: my $indexNode;
1751: my $at;
1752: for (my $s=0; $s<($#sel+1); $s++) {
1753: if ($sel[$s] ne '') {
1754: $indexNode = $s;
1755: $at = $sel[$s]-1;
1756: }
1757: }
1758: if ($at ne '') {
1759: $changeOrder = 1;
1760: &sortEntries($indexNode,$at);
1761: &saveChanges();
1762: }
1763: }
1764:
1765: # get all marked (checkboxes) entries
1766: my @marked = ();
1767: if (defined $env{'form.mark'}) {
1768: @marked = &Apache::loncommon::get_env_multiple('form.mark');
1769: }
1770:
1771: # move entries from one folder to another
1772: if (defined $env{'form.markedToMove'}) {
1773: my $markedToMove = $env{'form.markedToMove'};
1774: my @ToMove = split(/\,/,$markedToMove);
1775: my $moveTo = $env{'form.mark'};
1776: if (defined $moveTo){
1777: &moveEntries(\@ToMove,$moveTo);
1778: &saveChanges();
1779: }
1780: $changeOrder = 1;
1781:
1782: }
1783:
1784: # delete entries
1785: if ($env{'form.action'} eq 'delete') {
1786: &deleteEntries(\@marked);
1787: }
1788:
1789:
1790: # get all titles and notes and save them
1791: # only save, if user wants to save changes
1792: # do not save, when current action is 'delete' or 'sort' or 'move'
1793: my @newTitles = ();
1794: my @newPaths = ();
1795: my @newNotes = ();
1796: if ((defined $env{'form.newtitle'} || defined $env{'form.newpath'} || defined $env{'form.newnote'})
1797: && ($env{'form.action'} ne 'noSave') && ($env{'form.action'} ne 'delete') && !$changeOrder) {
1798: @newTitles = &Apache::loncommon::get_env_multiple('form.newtitle');
1799: @newPaths = &Apache::loncommon::get_env_multiple('form.newpath');
1800: @newNotes = &Apache::loncommon::get_env_multiple('form.newnote');
1801: my $node = 0;
1802: foreach my $t (@newTitles) {
1803: &setNewTitle($node, $t);
1804: $node++;
1805: }
1806: $node = 0;
1807: my $path = 0;
1808: for (my $i = 0; $i < ($#newTitles+1); $i++ ) {
1809: if (&setNewPath($node, $newPaths[$path])) {
1810: $path++;
1811: }
1812: $node++;
1813: }
1814: $node = 0;
1815: foreach my $n (@newNotes) {
1816: &setNewNote($node, $n);
1817: $node++;
1818: }
1819: &saveChanges();
1820: }
1821:
1822: # Create HTML-markup
1823: my $page;
1824: if ($env{'form.mode'} eq 'edit') {
1825: $page = &makePage("edit");
1826: }
1827: elsif ($env{'form.mode'} eq 'move') {
1828: $page = &makePage("move", \@marked);
1829: }
1830: elsif ($env{'form.mode'} eq 'import') {
1831: $page = &makePageImport($env{'form.rat'});
1832: }
1833: elsif ($env{'form.mode'} eq 'set') {
1834: $page = &makePageSet();
1835: }
1836: else {
1837: $page = &makePage("view");
1838: }
1839: @marked = ();
1840: $r->print($page);
1841: }
1842: # An error occured, print an error-page
1843: else {
1844: my $errorPage = &makeErrorPage();
1845: $r->print($errorPage);
1846: }
1847: return OK;
1848: }
1849:
1850: # ----------------------------------------------------- package Tree
1851: # Extend CPAN-Module Tree by function like 'moveNode' or 'deleteNode'
1852: package Tree;
1853:
1854: =pod
1855:
1856: =head2 Routines from package Tree
1857:
1858: =over 4
1859:
1860: =item * &getNodeByIndex(index, nodes)
1861:
1862: Searches for a node, specified by the index, in nodes (reference to array) and returns it.
1863:
1864:
1865: =item * &moveNode(node, at, newParent)
1866:
1867: 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).
1868:
1869:
1870: =item * &removeNode(node)
1871:
1872: Removes a node given by node from the tree.
1873:
1874:
1875: =item * &TreeIndex(children)
1876:
1877: Sets an index for every node in the tree, beginning with 0.
1878: 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).
1879:
1880:
1881: =item * &setCountZero()
1882:
1883: Resets index counter.
1884:
1885:
1886: =item * &RootToHash(childrenRt)
1887:
1888: Converts the root-node to a hash-entry: the key is root and values are just the indices of root's children.
1889:
1890:
1891: =item * &TreeToHash(childrenRt)
1892:
1893: 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).
1894: 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).
1895:
1896:
1897: =item * &HashToTree()
1898:
1899: 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.
1900:
1901:
1902: =item * &buildTree(node, childrenIn, TreeNodes, TreeHash)
1903:
1904: Joins the nodes to a tree.
1905: 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).
1906:
1907:
1908: =back
1909:
1910: =cut
1911:
1912:
1913: # returns the node with a given index from a list of nodes
1914: sub getNodeByIndex {
1915: my $index = shift;
1916: my $nodes = shift;
1917: my $found;
1918:
1919: for my $n (@$nodes) {
1920: my $curIndex = $n->value()->nindex();
1921: if ($n->value()->nindex() == $index) {
1922: $found = $n;
1923: }
1924: }
1925: return $found;
1926: }
1927:
1928: # moves a given node to a new parent or change the position from a node
1929: # within its siblings (sorting)
1930: sub moveNode {
1931: my $node = shift;
1932: my $at = shift;
1933: my $newParent = shift;
1934:
1935:
1936: if (!$newParent) {
1937: $newParent = $node->parent();
1938: }
1939:
1940: $node->parent()->remove_child($node);
1941:
1942: if (defined $at) {
1943: $newParent->add_child({at => $at},$node);
1944: }
1945: else {
1946: $newParent->add_child($node);
1947: }
1948:
1949: # updating root's children
1950: @childrenRt = $root->children();
1951: }
1952:
1953: # removes a given node
1954: sub removeNode() {
1955: my $node = shift;
1956: my @children = $node->children();
1957:
1958: if ($#children >= 0) {
1959: foreach my $c (@children) {
1960: &removeNode($c);
1961: }
1962: }
1963: $node->parent()->remove_child($node);
1964:
1965: # updating root's children
1966: @childrenRt = $root->children();
1967: }
1968:
1969:
1970: # set an index for every node in the tree, beginning with 0
1971: my $count = 0;
1972: sub TreeIndex {
1973: my $children = shift;
1974:
1975: foreach my $n (@$children) {
1976: my @children = $n->children();
1977: $n->value()->nindex($count);$count++;
1978:
1979: if ($#children>=0) {
1980: &TreeIndex(\@children);
1981: }
1982: }
1983: }
1984:
1985: # reset index counter
1986: sub setCountZero {
1987: $count = 0;
1988: }
1989:
1990:
1991: # convert the tree to a hash
1992: # each node is one hash-entry
1993: # keys are the indices, values are all other attributes
1994: # (containing tile, path, note, date and indices for all direct children)
1995: # except for root: the key is root and values are
1996: # just the indices of root's children
1997: sub RootToHash {
1998: my $childrenRt = shift;
1999: my @indexarr = ();
2000:
2001: foreach my $c (@$childrenRt) {
2002: push (@indexarr, $c->value()->nindex());
2003: }
2004: $TreeToHash{'root'} = [@indexarr];
2005: }
2006:
2007: sub TreeToHash {
2008: my $childrenRt = shift;
2009:
2010: foreach my $n (@$childrenRt) {
2011: my @arrtmp = ();
2012: $arrtmp[0] = $n->value()->title();
2013: $arrtmp[1] = $n->value()->path();
2014: $arrtmp[2] = $n->value()->note();
2015: $arrtmp[3] = $n->value()->date();
2016: my @childrenRt = $n->children();
2017: my $co = 4;
2018: foreach my $c (@childrenRt) {
2019: my $i = $c->value()->nindex();
2020: $arrtmp[$co] = $i;
2021: $co++;
2022: }
2023: $TreeToHash{$n->value()->nindex} = [ @arrtmp];
2024: if ($#childrenRt>=0) {
2025: &TreeToHash(\@childrenRt);
2026: }
2027: }
2028: }
2029:
2030:
2031: # convert the hash to a tree
2032: # build a tree-object for each entry in the hash
2033: # afterwards call &buildTree to connect the tree-objects
2034: sub HashToTree {
2035: my @TreeNodes = ();
2036: my $root;
2037:
2038: foreach my $key (keys %TreeHash) {
2039: if ($key eq 'root') {
2040: $root = Tree->new("root");
2041: }
2042: else {
2043: my @attributes = @{ $TreeHash{$key} };
2044: my $tmpNode;
2045: $tmpNode = Tree->new(Entry->new(title=>$attributes[0],
2046: path=>$attributes[1],
2047: note=>$attributes[2],
2048: date=>$attributes[3],
2049: nindex=>$key));
2050: push(@TreeNodes, $tmpNode);
2051: # shift all attributes except for
2052: # the indices representing the children of a node
2053: shift(@attributes);
2054: shift(@attributes);
2055: shift(@attributes);
2056: shift(@attributes);
2057: $TreeHash{$key} = [ @attributes ];
2058: }
2059: }
2060: # if there are nodes, build up the tree-structure
2061: if (defined $TreeHash{'root'} && $TreeHash{'root'} ne '') {
2062: my @childrenRtIn = @{ $TreeHash{'root'} };
2063: &buildTree(\$root, \@childrenRtIn,\@TreeNodes,\%TreeHash);
2064: }
2065: return $root;
2066: }
2067:
2068:
2069: # join the nodes to a tree
2070: sub buildTree {
2071: my ($node, $childrenIn, $TreeNodes, $TreeHash) = @_;
2072: bless($node, 'Tree');
2073: foreach my $c (@$childrenIn) {
2074: my $tmpNode = &getNodeByIndex($c,$TreeNodes);
2075: $$node->add_child($tmpNode);
2076: my @childrenIn = @{ $$TreeHash{$tmpNode->value()->nindex()} };
2077: &buildTree(\$tmpNode,\@childrenIn,$TreeNodes,$TreeHash);
2078: }
2079:
2080: }
2081:
2082:
2083: # ----------------------------------------------------- package Entry
2084: # package that defines the entrys a wishlist could have
2085: # i.e. folders and links
2086: package Entry;
2087:
2088: # constructor
2089: sub new {
2090: my $invocant = shift;
2091: my $class = ref($invocant) || $invocant;
2092: my $self = { @_ }; #set attributes
2093: bless($self, $class);
2094: return $self;
2095: }
2096:
2097: # getter and setter
2098: sub title {
2099: my $self = shift;
2100: if ( @_ ) { $self->{title} = shift}
2101: return $self->{title};
2102: }
2103:
2104: sub date {
2105: my $self = shift;
2106: if ( @_ ) { $self->{date} = shift}
2107: return $self->{date};
2108: }
2109:
2110: sub note {
2111: my $self = shift;
2112: if ( @_ ) { $self->{note} = shift}
2113: return $self->{note};
2114: }
2115:
2116: sub path {
2117: my $self = shift;
2118: if ( @_ ) { $self->{path} = shift}
2119: return $self->{path};
2120: }
2121:
2122: sub nindex {
2123: my $self = shift;
2124: if ( @_ ) { $self->{nindex} = shift}
2125: return $self->{nindex};
2126: }
2127:
2128:
2129: 1;
2130: __END__
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