Another attempt to fix the http blog redirects.
[WebKit-https.git] / Websites / webkit.org / blog / wp-admin / js / nav-menu.js
1 /**
2  * WordPress Administration Navigation Menu
3  * Interface JS functions
4  *
5  * @version 2.0.0
6  *
7  * @package WordPress
8  * @subpackage Administration
9  */
10
11 /* global menus, postboxes, columns, isRtl, navMenuL10n, ajaxurl */
12
13 var wpNavMenu;
14
15 (function($) {
16
17         var api;
18
19         api = wpNavMenu = {
20
21                 options : {
22                         menuItemDepthPerLevel : 30, // Do not use directly. Use depthToPx and pxToDepth instead.
23                         globalMaxDepth : 11
24                 },
25
26                 menuList : undefined,   // Set in init.
27                 targetList : undefined, // Set in init.
28                 menusChanged : false,
29                 isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),
30                 negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,
31
32                 // Functions that run on init.
33                 init : function() {
34                         api.menuList = $('#menu-to-edit');
35                         api.targetList = api.menuList;
36
37                         this.jQueryExtensions();
38
39                         this.attachMenuEditListeners();
40
41                         this.setupInputWithDefaultTitle();
42                         this.attachQuickSearchListeners();
43                         this.attachThemeLocationsListeners();
44
45                         this.attachTabsPanelListeners();
46
47                         this.attachUnsavedChangesListener();
48
49                         if ( api.menuList.length )
50                                 this.initSortables();
51
52                         if ( menus.oneThemeLocationNoMenus )
53                                 $( '#posttype-page' ).addSelectedToMenu( api.addMenuItemToBottom );
54
55                         this.initManageLocations();
56
57                         this.initAccessibility();
58
59                         this.initToggles();
60
61                         this.initPreviewing();
62                 },
63
64                 jQueryExtensions : function() {
65                         // jQuery extensions
66                         $.fn.extend({
67                                 menuItemDepth : function() {
68                                         var margin = api.isRTL ? this.eq(0).css('margin-right') : this.eq(0).css('margin-left');
69                                         return api.pxToDepth( margin && -1 != margin.indexOf('px') ? margin.slice(0, -2) : 0 );
70                                 },
71                                 updateDepthClass : function(current, prev) {
72                                         return this.each(function(){
73                                                 var t = $(this);
74                                                 prev = prev || t.menuItemDepth();
75                                                 $(this).removeClass('menu-item-depth-'+ prev )
76                                                         .addClass('menu-item-depth-'+ current );
77                                         });
78                                 },
79                                 shiftDepthClass : function(change) {
80                                         return this.each(function(){
81                                                 var t = $(this),
82                                                         depth = t.menuItemDepth();
83                                                 $(this).removeClass('menu-item-depth-'+ depth )
84                                                         .addClass('menu-item-depth-'+ (depth + change) );
85                                         });
86                                 },
87                                 childMenuItems : function() {
88                                         var result = $();
89                                         this.each(function(){
90                                                 var t = $(this), depth = t.menuItemDepth(), next = t.next();
91                                                 while( next.length && next.menuItemDepth() > depth ) {
92                                                         result = result.add( next );
93                                                         next = next.next();
94                                                 }
95                                         });
96                                         return result;
97                                 },
98                                 shiftHorizontally : function( dir ) {
99                                         return this.each(function(){
100                                                 var t = $(this),
101                                                         depth = t.menuItemDepth(),
102                                                         newDepth = depth + dir;
103
104                                                 // Change .menu-item-depth-n class
105                                                 t.moveHorizontally( newDepth, depth );
106                                         });
107                                 },
108                                 moveHorizontally : function( newDepth, depth ) {
109                                         return this.each(function(){
110                                                 var t = $(this),
111                                                         children = t.childMenuItems(),
112                                                         diff = newDepth - depth,
113                                                         subItemText = t.find('.is-submenu');
114
115                                                 // Change .menu-item-depth-n class
116                                                 t.updateDepthClass( newDepth, depth ).updateParentMenuItemDBId();
117
118                                                 // If it has children, move those too
119                                                 if ( children ) {
120                                                         children.each(function() {
121                                                                 var t = $(this),
122                                                                         thisDepth = t.menuItemDepth(),
123                                                                         newDepth = thisDepth + diff;
124                                                                 t.updateDepthClass(newDepth, thisDepth).updateParentMenuItemDBId();
125                                                         });
126                                                 }
127
128                                                 // Show "Sub item" helper text
129                                                 if (0 === newDepth)
130                                                         subItemText.hide();
131                                                 else
132                                                         subItemText.show();
133                                         });
134                                 },
135                                 updateParentMenuItemDBId : function() {
136                                         return this.each(function(){
137                                                 var item = $(this),
138                                                         input = item.find( '.menu-item-data-parent-id' ),
139                                                         depth = parseInt( item.menuItemDepth(), 10 ),
140                                                         parentDepth = depth - 1,
141                                                         parent = item.prevAll( '.menu-item-depth-' + parentDepth ).first();
142
143                                                 if ( 0 === depth ) { // Item is on the top level, has no parent
144                                                         input.val(0);
145                                                 } else { // Find the parent item, and retrieve its object id.
146                                                         input.val( parent.find( '.menu-item-data-db-id' ).val() );
147                                                 }
148                                         });
149                                 },
150                                 hideAdvancedMenuItemFields : function() {
151                                         return this.each(function(){
152                                                 var that = $(this);
153                                                 $('.hide-column-tog').not(':checked').each(function(){
154                                                         that.find('.field-' + $(this).val() ).addClass('hidden-field');
155                                                 });
156                                         });
157                                 },
158                                 /**
159                                  * Adds selected menu items to the menu.
160                                  *
161                                  * @param jQuery metabox The metabox jQuery object.
162                                  */
163                                 addSelectedToMenu : function(processMethod) {
164                                         if ( 0 === $('#menu-to-edit').length ) {
165                                                 return false;
166                                         }
167
168                                         return this.each(function() {
169                                                 var t = $(this), menuItems = {},
170                                                         checkboxes = ( menus.oneThemeLocationNoMenus && 0 === t.find( '.tabs-panel-active .categorychecklist li input:checked' ).length ) ? t.find( '#page-all li input[type="checkbox"]' ) : t.find( '.tabs-panel-active .categorychecklist li input:checked' ),
171                                                         re = /menu-item\[([^\]]*)/;
172
173                                                 processMethod = processMethod || api.addMenuItemToBottom;
174
175                                                 // If no items are checked, bail.
176                                                 if ( !checkboxes.length )
177                                                         return false;
178
179                                                 // Show the ajax spinner
180                                                 t.find( '.spinner' ).addClass( 'is-active' );
181
182                                                 // Retrieve menu item data
183                                                 $(checkboxes).each(function(){
184                                                         var t = $(this),
185                                                                 listItemDBIDMatch = re.exec( t.attr('name') ),
186                                                                 listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);
187
188                                                         if ( this.className && -1 != this.className.indexOf('add-to-top') )
189                                                                 processMethod = api.addMenuItemToTop;
190                                                         menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );
191                                                 });
192
193                                                 // Add the items
194                                                 api.addItemToMenu(menuItems, processMethod, function(){
195                                                         // Deselect the items and hide the ajax spinner
196                                                         checkboxes.removeAttr('checked');
197                                                         t.find( '.spinner' ).removeClass( 'is-active' );
198                                                 });
199                                         });
200                                 },
201                                 getItemData : function( itemType, id ) {
202                                         itemType = itemType || 'menu-item';
203
204                                         var itemData = {}, i,
205                                         fields = [
206                                                 'menu-item-db-id',
207                                                 'menu-item-object-id',
208                                                 'menu-item-object',
209                                                 'menu-item-parent-id',
210                                                 'menu-item-position',
211                                                 'menu-item-type',
212                                                 'menu-item-title',
213                                                 'menu-item-url',
214                                                 'menu-item-description',
215                                                 'menu-item-attr-title',
216                                                 'menu-item-target',
217                                                 'menu-item-classes',
218                                                 'menu-item-xfn'
219                                         ];
220
221                                         if( !id && itemType == 'menu-item' ) {
222                                                 id = this.find('.menu-item-data-db-id').val();
223                                         }
224
225                                         if( !id ) return itemData;
226
227                                         this.find('input').each(function() {
228                                                 var field;
229                                                 i = fields.length;
230                                                 while ( i-- ) {
231                                                         if( itemType == 'menu-item' )
232                                                                 field = fields[i] + '[' + id + ']';
233                                                         else if( itemType == 'add-menu-item' )
234                                                                 field = 'menu-item[' + id + '][' + fields[i] + ']';
235
236                                                         if (
237                                                                 this.name &&
238                                                                 field == this.name
239                                                         ) {
240                                                                 itemData[fields[i]] = this.value;
241                                                         }
242                                                 }
243                                         });
244
245                                         return itemData;
246                                 },
247                                 setItemData : function( itemData, itemType, id ) { // Can take a type, such as 'menu-item', or an id.
248                                         itemType = itemType || 'menu-item';
249
250                                         if( !id && itemType == 'menu-item' ) {
251                                                 id = $('.menu-item-data-db-id', this).val();
252                                         }
253
254                                         if( !id ) return this;
255
256                                         this.find('input').each(function() {
257                                                 var t = $(this), field;
258                                                 $.each( itemData, function( attr, val ) {
259                                                         if( itemType == 'menu-item' )
260                                                                 field = attr + '[' + id + ']';
261                                                         else if( itemType == 'add-menu-item' )
262                                                                 field = 'menu-item[' + id + '][' + attr + ']';
263
264                                                         if ( field == t.attr('name') ) {
265                                                                 t.val( val );
266                                                         }
267                                                 });
268                                         });
269                                         return this;
270                                 }
271                         });
272                 },
273
274                 countMenuItems : function( depth ) {
275                         return $( '.menu-item-depth-' + depth ).length;
276                 },
277
278                 moveMenuItem : function( $this, dir ) {
279
280                         var items, newItemPosition, newDepth,
281                                 menuItems = $( '#menu-to-edit li' ),
282                                 menuItemsCount = menuItems.length,
283                                 thisItem = $this.parents( 'li.menu-item' ),
284                                 thisItemChildren = thisItem.childMenuItems(),
285                                 thisItemData = thisItem.getItemData(),
286                                 thisItemDepth = parseInt( thisItem.menuItemDepth(), 10 ),
287                                 thisItemPosition = parseInt( thisItem.index(), 10 ),
288                                 nextItem = thisItem.next(),
289                                 nextItemChildren = nextItem.childMenuItems(),
290                                 nextItemDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1,
291                                 prevItem = thisItem.prev(),
292                                 prevItemDepth = parseInt( prevItem.menuItemDepth(), 10 ),
293                                 prevItemId = prevItem.getItemData()['menu-item-db-id'];
294
295                         switch ( dir ) {
296                         case 'up':
297                                 newItemPosition = thisItemPosition - 1;
298
299                                 // Already at top
300                                 if ( 0 === thisItemPosition )
301                                         break;
302
303                                 // If a sub item is moved to top, shift it to 0 depth
304                                 if ( 0 === newItemPosition && 0 !== thisItemDepth )
305                                         thisItem.moveHorizontally( 0, thisItemDepth );
306
307                                 // If prev item is sub item, shift to match depth
308                                 if ( 0 !== prevItemDepth )
309                                         thisItem.moveHorizontally( prevItemDepth, thisItemDepth );
310
311                                 // Does this item have sub items?
312                                 if ( thisItemChildren ) {
313                                         items = thisItem.add( thisItemChildren );
314                                         // Move the entire block
315                                         items.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
316                                 } else {
317                                         thisItem.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
318                                 }
319                                 break;
320                         case 'down':
321                                 // Does this item have sub items?
322                                 if ( thisItemChildren ) {
323                                         items = thisItem.add( thisItemChildren ),
324                                                 nextItem = menuItems.eq( items.length + thisItemPosition ),
325                                                 nextItemChildren = 0 !== nextItem.childMenuItems().length;
326
327                                         if ( nextItemChildren ) {
328                                                 newDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1;
329                                                 thisItem.moveHorizontally( newDepth, thisItemDepth );
330                                         }
331
332                                         // Have we reached the bottom?
333                                         if ( menuItemsCount === thisItemPosition + items.length )
334                                                 break;
335
336                                         items.detach().insertAfter( menuItems.eq( thisItemPosition + items.length ) ).updateParentMenuItemDBId();
337                                 } else {
338                                         // If next item has sub items, shift depth
339                                         if ( 0 !== nextItemChildren.length )
340                                                 thisItem.moveHorizontally( nextItemDepth, thisItemDepth );
341
342                                         // Have we reached the bottom
343                                         if ( menuItemsCount === thisItemPosition + 1 )
344                                                 break;
345                                         thisItem.detach().insertAfter( menuItems.eq( thisItemPosition + 1 ) ).updateParentMenuItemDBId();
346                                 }
347                                 break;
348                         case 'top':
349                                 // Already at top
350                                 if ( 0 === thisItemPosition )
351                                         break;
352                                 // Does this item have sub items?
353                                 if ( thisItemChildren ) {
354                                         items = thisItem.add( thisItemChildren );
355                                         // Move the entire block
356                                         items.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
357                                 } else {
358                                         thisItem.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
359                                 }
360                                 break;
361                         case 'left':
362                                 // As far left as possible
363                                 if ( 0 === thisItemDepth )
364                                         break;
365                                 thisItem.shiftHorizontally( -1 );
366                                 break;
367                         case 'right':
368                                 // Can't be sub item at top
369                                 if ( 0 === thisItemPosition )
370                                         break;
371                                 // Already sub item of prevItem
372                                 if ( thisItemData['menu-item-parent-id'] === prevItemId )
373                                         break;
374                                 thisItem.shiftHorizontally( 1 );
375                                 break;
376                         }
377                         $this.focus();
378                         api.registerChange();
379                         api.refreshKeyboardAccessibility();
380                         api.refreshAdvancedAccessibility();
381                 },
382
383                 initAccessibility : function() {
384                         var menu = $( '#menu-to-edit' );
385
386                         api.refreshKeyboardAccessibility();
387                         api.refreshAdvancedAccessibility();
388
389                         // Refresh the accessibility when the user comes close to the item in any way
390                         menu.on( 'mouseenter.refreshAccessibility focus.refreshAccessibility touchstart.refreshAccessibility' , '.menu-item' , function(){
391                                 api.refreshAdvancedAccessibilityOfItem( $( this ).find( '.item-edit' ) );
392                         } );
393
394                         // We have to update on click as well because we might hover first, change the item, and then click.
395                         menu.on( 'click', '.item-edit', function() {
396                                 api.refreshAdvancedAccessibilityOfItem( $( this ) );
397                         } );
398
399                         // Links for moving items
400                         menu.on( 'click', '.menus-move', function ( e ) {
401                                 var $this = $( this ),
402                                         dir = $this.data( 'dir' );
403
404                                 if ( 'undefined' !== typeof dir ) {
405                                         api.moveMenuItem( $( this ).parents( 'li.menu-item' ).find( 'a.item-edit' ), dir );
406                                 }
407                                 e.preventDefault();
408                         });
409                 },
410
411                 /**
412                  * refreshAdvancedAccessibilityOfItem( [itemToRefresh] )
413                  *
414                  * Refreshes advanced accessibility buttons for one menu item.
415                  * Shows or hides buttons based on the location of the menu item.
416                  *
417                  * @param  {object} itemToRefresh The menu item that might need its advanced accessibility buttons refreshed
418                  */
419                 refreshAdvancedAccessibilityOfItem : function( itemToRefresh ) {
420
421                         // Only refresh accessibility when necessary
422                         if ( true !== $( itemToRefresh ).data( 'needs_accessibility_refresh' ) ) {
423                                 return;
424                         }
425
426                         var thisLink, thisLinkText, primaryItems, itemPosition, title,
427                                 parentItem, parentItemId, parentItemName, subItems,
428                                 $this = $( itemToRefresh ),
429                                 menuItem = $this.closest( 'li.menu-item' ).first(),
430                                 depth = menuItem.menuItemDepth(),
431                                 isPrimaryMenuItem = ( 0 === depth ),
432                                 itemName = $this.closest( '.menu-item-handle' ).find( '.menu-item-title' ).text(),
433                                 position = parseInt( menuItem.index(), 10 ),
434                                 prevItemDepth = ( isPrimaryMenuItem ) ? depth : parseInt( depth - 1, 10 ),
435                                 prevItemNameLeft = menuItem.prevAll('.menu-item-depth-' + prevItemDepth).first().find( '.menu-item-title' ).text(),
436                                 prevItemNameRight = menuItem.prevAll('.menu-item-depth-' + depth).first().find( '.menu-item-title' ).text(),
437                                 totalMenuItems = $('#menu-to-edit li').length,
438                                 hasSameDepthSibling = menuItem.nextAll( '.menu-item-depth-' + depth ).length;
439
440                                 menuItem.find( '.field-move' ).toggle( totalMenuItems > 1 ); 
441
442                         // Where can they move this menu item?
443                         if ( 0 !== position ) {
444                                 thisLink = menuItem.find( '.menus-move-up' );
445                                 thisLink.prop( 'title', menus.moveUp ).css( 'display', 'inline' );
446                         }
447
448                         if ( 0 !== position && isPrimaryMenuItem ) {
449                                 thisLink = menuItem.find( '.menus-move-top' );
450                                 thisLink.prop( 'title', menus.moveToTop ).css( 'display', 'inline' );
451                         }
452
453                         if ( position + 1 !== totalMenuItems && 0 !== position ) {
454                                 thisLink = menuItem.find( '.menus-move-down' );
455                                 thisLink.prop( 'title', menus.moveDown ).css( 'display', 'inline' );
456                         }
457
458                         if ( 0 === position && 0 !== hasSameDepthSibling ) {
459                                 thisLink = menuItem.find( '.menus-move-down' );
460                                 thisLink.prop( 'title', menus.moveDown ).css( 'display', 'inline' );
461                         }
462
463                         if ( ! isPrimaryMenuItem ) {
464                                 thisLink = menuItem.find( '.menus-move-left' ),
465                                 thisLinkText = menus.outFrom.replace( '%s', prevItemNameLeft );
466                                 thisLink.prop( 'title', menus.moveOutFrom.replace( '%s', prevItemNameLeft ) ).text( thisLinkText ).css( 'display', 'inline' );
467                         }
468
469                         if ( 0 !== position ) {
470                                 if ( menuItem.find( '.menu-item-data-parent-id' ).val() !== menuItem.prev().find( '.menu-item-data-db-id' ).val() ) {
471                                         thisLink = menuItem.find( '.menus-move-right' ),
472                                         thisLinkText = menus.under.replace( '%s', prevItemNameRight );
473                                         thisLink.prop( 'title', menus.moveUnder.replace( '%s', prevItemNameRight ) ).text( thisLinkText ).css( 'display', 'inline' );
474                                 }
475                         }
476
477                         if ( isPrimaryMenuItem ) {
478                                 primaryItems = $( '.menu-item-depth-0' ),
479                                 itemPosition = primaryItems.index( menuItem ) + 1,
480                                 totalMenuItems = primaryItems.length,
481
482                                 // String together help text for primary menu items
483                                 title = menus.menuFocus.replace( '%1$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$d', totalMenuItems );
484                         } else {
485                                 parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),
486                                 parentItemId = parentItem.find( '.menu-item-data-db-id' ).val(),
487                                 parentItemName = parentItem.find( '.menu-item-title' ).text(),
488                                 subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemId + '"]' ),
489                                 itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;
490
491                                 // String together help text for sub menu items
492                                 title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$s', parentItemName );
493                         }
494
495                         $this.prop('title', title).html( title );
496
497                         // Mark this item's accessibility as refreshed
498                         $this.data( 'needs_accessibility_refresh', false );
499                 },
500
501                 /**
502                  * refreshAdvancedAccessibility
503                  *
504                  * Hides all advanced accessibility buttons and marks them for refreshing.
505                  */
506                 refreshAdvancedAccessibility : function() {
507
508                         // Hide all links by default
509                         $( '.menu-item-settings .field-move a' ).hide();
510
511                         // Mark all menu items as unprocessed
512                         $( '.item-edit' ).data( 'needs_accessibility_refresh', true );
513
514                         // All open items have to be refreshed or they will show no links
515                         $( '.menu-item-edit-active .item-edit' ).each( function() {
516                                 api.refreshAdvancedAccessibilityOfItem( this );
517                         } );
518                 },
519
520                 refreshKeyboardAccessibility : function() {
521                         $( '.item-edit' ).off( 'focus' ).on( 'focus', function(){
522                                 $(this).off( 'keydown' ).on( 'keydown', function(e){
523
524                                         var arrows,
525                                                 $this = $( this ),
526                                                 thisItem = $this.parents( 'li.menu-item' ),
527                                                 thisItemData = thisItem.getItemData();
528
529                                         // Bail if it's not an arrow key
530                                         if ( 37 != e.which && 38 != e.which && 39 != e.which && 40 != e.which )
531                                                 return;
532
533                                         // Avoid multiple keydown events
534                                         $this.off('keydown');
535
536                                         // Bail if there is only one menu item
537                                         if ( 1 === $('#menu-to-edit li').length )
538                                                 return;
539
540                                         // If RTL, swap left/right arrows
541                                         arrows = { '38': 'up', '40': 'down', '37': 'left', '39': 'right' };
542                                         if ( $('body').hasClass('rtl') )
543                                                 arrows = { '38' : 'up', '40' : 'down', '39' : 'left', '37' : 'right' };
544
545                                         switch ( arrows[e.which] ) {
546                                         case 'up':
547                                                 api.moveMenuItem( $this, 'up' );
548                                                 break;
549                                         case 'down':
550                                                 api.moveMenuItem( $this, 'down' );
551                                                 break;
552                                         case 'left':
553                                                 api.moveMenuItem( $this, 'left' );
554                                                 break;
555                                         case 'right':
556                                                 api.moveMenuItem( $this, 'right' );
557                                                 break;
558                                         }
559                                         // Put focus back on same menu item
560                                         $( '#edit-' + thisItemData['menu-item-db-id'] ).focus();
561                                         return false;
562                                 });
563                         });
564                 },
565
566                 initPreviewing : function() {
567                         // Update the item handle title when the navigation label is changed.
568                         $( '#menu-to-edit' ).on( 'change input', '.edit-menu-item-title', function(e) {
569                                 var input = $( e.currentTarget ), title, titleEl;
570                                 title = input.val();
571                                 titleEl = input.closest( '.menu-item' ).find( '.menu-item-title' );
572                                 // Don't update to empty title.
573                                 if ( title ) {
574                                         titleEl.text( title ).removeClass( 'no-title' );
575                                 } else {
576                                         titleEl.text( navMenuL10n.untitled ).addClass( 'no-title' );
577                                 }
578                         } );
579                 },
580
581                 initToggles : function() {
582                         // init postboxes
583                         postboxes.add_postbox_toggles('nav-menus');
584
585                         // adjust columns functions for menus UI
586                         columns.useCheckboxesForHidden();
587                         columns.checked = function(field) {
588                                 $('.field-' + field).removeClass('hidden-field');
589                         };
590                         columns.unchecked = function(field) {
591                                 $('.field-' + field).addClass('hidden-field');
592                         };
593                         // hide fields
594                         api.menuList.hideAdvancedMenuItemFields();
595
596                         $('.hide-postbox-tog').click(function () {
597                                 var hidden = $( '.accordion-container li.accordion-section' ).filter(':hidden').map(function() { return this.id; }).get().join(',');
598                                 $.post(ajaxurl, {
599                                         action: 'closed-postboxes',
600                                         hidden: hidden,
601                                         closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
602                                         page: 'nav-menus'
603                                 });
604                         });
605                 },
606
607                 initSortables : function() {
608                         var currentDepth = 0, originalDepth, minDepth, maxDepth,
609                                 prev, next, prevBottom, nextThreshold, helperHeight, transport,
610                                 menuEdge = api.menuList.offset().left,
611                                 body = $('body'), maxChildDepth,
612                                 menuMaxDepth = initialMenuMaxDepth();
613
614                         if( 0 !== $( '#menu-to-edit li' ).length )
615                                 $( '.drag-instructions' ).show();
616
617                         // Use the right edge if RTL.
618                         menuEdge += api.isRTL ? api.menuList.width() : 0;
619
620                         api.menuList.sortable({
621                                 handle: '.menu-item-handle',
622                                 placeholder: 'sortable-placeholder',
623                                 start: function(e, ui) {
624                                         var height, width, parent, children, tempHolder;
625
626                                         // handle placement for rtl orientation
627                                         if ( api.isRTL )
628                                                 ui.item[0].style.right = 'auto';
629
630                                         transport = ui.item.children('.menu-item-transport');
631
632                                         // Set depths. currentDepth must be set before children are located.
633                                         originalDepth = ui.item.menuItemDepth();
634                                         updateCurrentDepth(ui, originalDepth);
635
636                                         // Attach child elements to parent
637                                         // Skip the placeholder
638                                         parent = ( ui.item.next()[0] == ui.placeholder[0] ) ? ui.item.next() : ui.item;
639                                         children = parent.childMenuItems();
640                                         transport.append( children );
641
642                                         // Update the height of the placeholder to match the moving item.
643                                         height = transport.outerHeight();
644                                         // If there are children, account for distance between top of children and parent
645                                         height += ( height > 0 ) ? (ui.placeholder.css('margin-top').slice(0, -2) * 1) : 0;
646                                         height += ui.helper.outerHeight();
647                                         helperHeight = height;
648                                         height -= 2; // Subtract 2 for borders
649                                         ui.placeholder.height(height);
650
651                                         // Update the width of the placeholder to match the moving item.
652                                         maxChildDepth = originalDepth;
653                                         children.each(function(){
654                                                 var depth = $(this).menuItemDepth();
655                                                 maxChildDepth = (depth > maxChildDepth) ? depth : maxChildDepth;
656                                         });
657                                         width = ui.helper.find('.menu-item-handle').outerWidth(); // Get original width
658                                         width += api.depthToPx(maxChildDepth - originalDepth); // Account for children
659                                         width -= 2; // Subtract 2 for borders
660                                         ui.placeholder.width(width);
661
662                                         // Update the list of menu items.
663                                         tempHolder = ui.placeholder.next();
664                                         tempHolder.css( 'margin-top', helperHeight + 'px' ); // Set the margin to absorb the placeholder
665                                         ui.placeholder.detach(); // detach or jQuery UI will think the placeholder is a menu item
666                                         $(this).sortable( 'refresh' ); // The children aren't sortable. We should let jQ UI know.
667                                         ui.item.after( ui.placeholder ); // reattach the placeholder.
668                                         tempHolder.css('margin-top', 0); // reset the margin
669
670                                         // Now that the element is complete, we can update...
671                                         updateSharedVars(ui);
672                                 },
673                                 stop: function(e, ui) {
674                                         var children, subMenuTitle,
675                                                 depthChange = currentDepth - originalDepth;
676
677                                         // Return child elements to the list
678                                         children = transport.children().insertAfter(ui.item);
679
680                                         // Add "sub menu" description
681                                         subMenuTitle = ui.item.find( '.item-title .is-submenu' );
682                                         if ( 0 < currentDepth )
683                                                 subMenuTitle.show();
684                                         else
685                                                 subMenuTitle.hide();
686
687                                         // Update depth classes
688                                         if ( 0 !== depthChange ) {
689                                                 ui.item.updateDepthClass( currentDepth );
690                                                 children.shiftDepthClass( depthChange );
691                                                 updateMenuMaxDepth( depthChange );
692                                         }
693                                         // Register a change
694                                         api.registerChange();
695                                         // Update the item data.
696                                         ui.item.updateParentMenuItemDBId();
697
698                                         // address sortable's incorrectly-calculated top in opera
699                                         ui.item[0].style.top = 0;
700
701                                         // handle drop placement for rtl orientation
702                                         if ( api.isRTL ) {
703                                                 ui.item[0].style.left = 'auto';
704                                                 ui.item[0].style.right = 0;
705                                         }
706
707                                         api.refreshKeyboardAccessibility();
708                                         api.refreshAdvancedAccessibility();
709                                 },
710                                 change: function(e, ui) {
711                                         // Make sure the placeholder is inside the menu.
712                                         // Otherwise fix it, or we're in trouble.
713                                         if( ! ui.placeholder.parent().hasClass('menu') )
714                                                 (prev.length) ? prev.after( ui.placeholder ) : api.menuList.prepend( ui.placeholder );
715
716                                         updateSharedVars(ui);
717                                 },
718                                 sort: function(e, ui) {
719                                         var offset = ui.helper.offset(),
720                                                 edge = api.isRTL ? offset.left + ui.helper.width() : offset.left,
721                                                 depth = api.negateIfRTL * api.pxToDepth( edge - menuEdge );
722                                         // Check and correct if depth is not within range.
723                                         // Also, if the dragged element is dragged upwards over
724                                         // an item, shift the placeholder to a child position.
725                                         if ( depth > maxDepth || offset.top < prevBottom ) depth = maxDepth;
726                                         else if ( depth < minDepth ) depth = minDepth;
727
728                                         if( depth != currentDepth )
729                                                 updateCurrentDepth(ui, depth);
730
731                                         // If we overlap the next element, manually shift downwards
732                                         if( nextThreshold && offset.top + helperHeight > nextThreshold ) {
733                                                 next.after( ui.placeholder );
734                                                 updateSharedVars( ui );
735                                                 $( this ).sortable( 'refreshPositions' );
736                                         }
737                                 }
738                         });
739
740                         function updateSharedVars(ui) {
741                                 var depth;
742
743                                 prev = ui.placeholder.prev();
744                                 next = ui.placeholder.next();
745
746                                 // Make sure we don't select the moving item.
747                                 if( prev[0] == ui.item[0] ) prev = prev.prev();
748                                 if( next[0] == ui.item[0] ) next = next.next();
749
750                                 prevBottom = (prev.length) ? prev.offset().top + prev.height() : 0;
751                                 nextThreshold = (next.length) ? next.offset().top + next.height() / 3 : 0;
752                                 minDepth = (next.length) ? next.menuItemDepth() : 0;
753
754                                 if( prev.length )
755                                         maxDepth = ( (depth = prev.menuItemDepth() + 1) > api.options.globalMaxDepth ) ? api.options.globalMaxDepth : depth;
756                                 else
757                                         maxDepth = 0;
758                         }
759
760                         function updateCurrentDepth(ui, depth) {
761                                 ui.placeholder.updateDepthClass( depth, currentDepth );
762                                 currentDepth = depth;
763                         }
764
765                         function initialMenuMaxDepth() {
766                                 if( ! body[0].className ) return 0;
767                                 var match = body[0].className.match(/menu-max-depth-(\d+)/);
768                                 return match && match[1] ? parseInt( match[1], 10 ) : 0;
769                         }
770
771                         function updateMenuMaxDepth( depthChange ) {
772                                 var depth, newDepth = menuMaxDepth;
773                                 if ( depthChange === 0 ) {
774                                         return;
775                                 } else if ( depthChange > 0 ) {
776                                         depth = maxChildDepth + depthChange;
777                                         if( depth > menuMaxDepth )
778                                                 newDepth = depth;
779                                 } else if ( depthChange < 0 && maxChildDepth == menuMaxDepth ) {
780                                         while( ! $('.menu-item-depth-' + newDepth, api.menuList).length && newDepth > 0 )
781                                                 newDepth--;
782                                 }
783                                 // Update the depth class.
784                                 body.removeClass( 'menu-max-depth-' + menuMaxDepth ).addClass( 'menu-max-depth-' + newDepth );
785                                 menuMaxDepth = newDepth;
786                         }
787                 },
788
789                 initManageLocations : function () {
790                         $('#menu-locations-wrap form').submit(function(){
791                                 window.onbeforeunload = null;
792                         });
793                         $('.menu-location-menus select').on('change', function () {
794                                 var editLink = $(this).closest('tr').find('.locations-edit-menu-link');
795                                 if ($(this).find('option:selected').data('orig'))
796                                         editLink.show();
797                                 else
798                                         editLink.hide();
799                         });
800                 },
801
802                 attachMenuEditListeners : function() {
803                         var that = this;
804                         $('#update-nav-menu').bind('click', function(e) {
805                                 if ( e.target && e.target.className ) {
806                                         if ( -1 != e.target.className.indexOf('item-edit') ) {
807                                                 return that.eventOnClickEditLink(e.target);
808                                         } else if ( -1 != e.target.className.indexOf('menu-save') ) {
809                                                 return that.eventOnClickMenuSave(e.target);
810                                         } else if ( -1 != e.target.className.indexOf('menu-delete') ) {
811                                                 return that.eventOnClickMenuDelete(e.target);
812                                         } else if ( -1 != e.target.className.indexOf('item-delete') ) {
813                                                 return that.eventOnClickMenuItemDelete(e.target);
814                                         } else if ( -1 != e.target.className.indexOf('item-cancel') ) {
815                                                 return that.eventOnClickCancelLink(e.target);
816                                         }
817                                 }
818                         });
819                         $('#add-custom-links input[type="text"]').keypress(function(e){
820                                 if ( e.keyCode === 13 ) {
821                                         e.preventDefault();
822                                         $( '#submit-customlinkdiv' ).click();
823                                 }
824                         });
825                 },
826
827                 /**
828                  * An interface for managing default values for input elements
829                  * that is both JS and accessibility-friendly.
830                  *
831                  * Input elements that add the class 'input-with-default-title'
832                  * will have their values set to the provided HTML title when empty.
833                  */
834                 setupInputWithDefaultTitle : function() {
835                         var name = 'input-with-default-title';
836
837                         $('.' + name).each( function(){
838                                 var $t = $(this), title = $t.attr('title'), val = $t.val();
839                                 $t.data( name, title );
840
841                                 if( '' === val ) $t.val( title );
842                                 else if ( title == val ) return;
843                                 else $t.removeClass( name );
844                         }).focus( function(){
845                                 var $t = $(this);
846                                 if( $t.val() == $t.data(name) )
847                                         $t.val('').removeClass( name );
848                         }).blur( function(){
849                                 var $t = $(this);
850                                 if( '' === $t.val() )
851                                         $t.addClass( name ).val( $t.data(name) );
852                         });
853
854                         $( '.blank-slate .input-with-default-title' ).focus();
855                 },
856
857                 attachThemeLocationsListeners : function() {
858                         var loc = $('#nav-menu-theme-locations'), params = {};
859                         params.action = 'menu-locations-save';
860                         params['menu-settings-column-nonce'] = $('#menu-settings-column-nonce').val();
861                         loc.find('input[type="submit"]').click(function() {
862                                 loc.find('select').each(function() {
863                                         params[this.name] = $(this).val();
864                                 });
865                                 loc.find( '.spinner' ).addClass( 'is-active' );
866                                 $.post( ajaxurl, params, function() {
867                                         loc.find( '.spinner' ).removeClass( 'is-active' );
868                                 });
869                                 return false;
870                         });
871                 },
872
873                 attachQuickSearchListeners : function() {
874                         var searchTimer;
875
876                         $('.quick-search').keypress(function(e){
877                                 var t = $(this);
878
879                                 if( 13 == e.which ) {
880                                         api.updateQuickSearchResults( t );
881                                         return false;
882                                 }
883
884                                 if( searchTimer ) clearTimeout(searchTimer);
885
886                                 searchTimer = setTimeout(function(){
887                                         api.updateQuickSearchResults( t );
888                                 }, 400);
889                         }).attr('autocomplete','off');
890                 },
891
892                 updateQuickSearchResults : function(input) {
893                         var panel, params,
894                         minSearchLength = 2,
895                         q = input.val();
896
897                         if( q.length < minSearchLength ) return;
898
899                         panel = input.parents('.tabs-panel');
900                         params = {
901                                 'action': 'menu-quick-search',
902                                 'response-format': 'markup',
903                                 'menu': $('#menu').val(),
904                                 'menu-settings-column-nonce': $('#menu-settings-column-nonce').val(),
905                                 'q': q,
906                                 'type': input.attr('name')
907                         };
908
909                         $( '.spinner', panel ).addClass( 'is-active' );
910
911                         $.post( ajaxurl, params, function(menuMarkup) {
912                                 api.processQuickSearchQueryResponse(menuMarkup, params, panel);
913                         });
914                 },
915
916                 addCustomLink : function( processMethod ) {
917                         var url = $('#custom-menu-item-url').val(),
918                                 label = $('#custom-menu-item-name').val();
919
920                         processMethod = processMethod || api.addMenuItemToBottom;
921
922                         if ( '' === url || 'http://' == url )
923                                 return false;
924
925                         // Show the ajax spinner
926                         $( '.customlinkdiv .spinner' ).addClass( 'is-active' );
927                         this.addLinkToMenu( url, label, processMethod, function() {
928                                 // Remove the ajax spinner
929                                 $( '.customlinkdiv .spinner' ).removeClass( 'is-active' );
930                                 // Set custom link form back to defaults
931                                 $('#custom-menu-item-name').val('').blur();
932                                 $('#custom-menu-item-url').val('http://');
933                         });
934                 },
935
936                 addLinkToMenu : function(url, label, processMethod, callback) {
937                         processMethod = processMethod || api.addMenuItemToBottom;
938                         callback = callback || function(){};
939
940                         api.addItemToMenu({
941                                 '-1': {
942                                         'menu-item-type': 'custom',
943                                         'menu-item-url': url,
944                                         'menu-item-title': label
945                                 }
946                         }, processMethod, callback);
947                 },
948
949                 addItemToMenu : function(menuItem, processMethod, callback) {
950                         var menu = $('#menu').val(),
951                                 nonce = $('#menu-settings-column-nonce').val(),
952                                 params;
953
954                         processMethod = processMethod || function(){};
955                         callback = callback || function(){};
956
957                         params = {
958                                 'action': 'add-menu-item',
959                                 'menu': menu,
960                                 'menu-settings-column-nonce': nonce,
961                                 'menu-item': menuItem
962                         };
963
964                         $.post( ajaxurl, params, function(menuMarkup) {
965                                 var ins = $('#menu-instructions');
966
967                                 menuMarkup = $.trim( menuMarkup ); // Trim leading whitespaces
968                                 processMethod(menuMarkup, params);
969
970                                 // Make it stand out a bit more visually, by adding a fadeIn
971                                 $( 'li.pending' ).hide().fadeIn('slow');
972                                 $( '.drag-instructions' ).show();
973                                 if( ! ins.hasClass( 'menu-instructions-inactive' ) && ins.siblings().length )
974                                         ins.addClass( 'menu-instructions-inactive' );
975
976                                 callback();
977                         });
978                 },
979
980                 /**
981                  * Process the add menu item request response into menu list item.
982                  *
983                  * @param string menuMarkup The text server response of menu item markup.
984                  * @param object req The request arguments.
985                  */
986                 addMenuItemToBottom : function( menuMarkup ) {
987                         $(menuMarkup).hideAdvancedMenuItemFields().appendTo( api.targetList );
988                         api.refreshKeyboardAccessibility();
989                         api.refreshAdvancedAccessibility();
990                 },
991
992                 addMenuItemToTop : function( menuMarkup ) {
993                         $(menuMarkup).hideAdvancedMenuItemFields().prependTo( api.targetList );
994                         api.refreshKeyboardAccessibility();
995                         api.refreshAdvancedAccessibility();
996                 },
997
998                 attachUnsavedChangesListener : function() {
999                         $('#menu-management input, #menu-management select, #menu-management, #menu-management textarea, .menu-location-menus select').change(function(){
1000                                 api.registerChange();
1001                         });
1002
1003                         if ( 0 !== $('#menu-to-edit').length || 0 !== $('.menu-location-menus select').length ) {
1004                                 window.onbeforeunload = function(){
1005                                         if ( api.menusChanged )
1006                                                 return navMenuL10n.saveAlert;
1007                                 };
1008                         } else {
1009                                 // Make the post boxes read-only, as they can't be used yet
1010                                 $( '#menu-settings-column' ).find( 'input,select' ).end().find( 'a' ).attr( 'href', '#' ).unbind( 'click' );
1011                         }
1012                 },
1013
1014                 registerChange : function() {
1015                         api.menusChanged = true;
1016                 },
1017
1018                 attachTabsPanelListeners : function() {
1019                         $('#menu-settings-column').bind('click', function(e) {
1020                                 var selectAreaMatch, panelId, wrapper, items,
1021                                         target = $(e.target);
1022
1023                                 if ( target.hasClass('nav-tab-link') ) {
1024
1025                                         panelId = target.data( 'type' );
1026
1027                                         wrapper = target.parents('.accordion-section-content').first();
1028
1029                                         // upon changing tabs, we want to uncheck all checkboxes
1030                                         $('input', wrapper).removeAttr('checked');
1031
1032                                         $('.tabs-panel-active', wrapper).removeClass('tabs-panel-active').addClass('tabs-panel-inactive');
1033                                         $('#' + panelId, wrapper).removeClass('tabs-panel-inactive').addClass('tabs-panel-active');
1034
1035                                         $('.tabs', wrapper).removeClass('tabs');
1036                                         target.parent().addClass('tabs');
1037
1038                                         // select the search bar
1039                                         $('.quick-search', wrapper).focus();
1040
1041                                         e.preventDefault();
1042                                 } else if ( target.hasClass('select-all') ) {
1043                                         selectAreaMatch = /#(.*)$/.exec(e.target.href);
1044                                         if ( selectAreaMatch && selectAreaMatch[1] ) {
1045                                                 items = $('#' + selectAreaMatch[1] + ' .tabs-panel-active .menu-item-title input');
1046                                                 if( items.length === items.filter(':checked').length )
1047                                                         items.removeAttr('checked');
1048                                                 else
1049                                                         items.prop('checked', true);
1050                                                 return false;
1051                                         }
1052                                 } else if ( target.hasClass('submit-add-to-menu') ) {
1053                                         api.registerChange();
1054
1055                                         if ( e.target.id && 'submit-customlinkdiv' == e.target.id )
1056                                                 api.addCustomLink( api.addMenuItemToBottom );
1057                                         else if ( e.target.id && -1 != e.target.id.indexOf('submit-') )
1058                                                 $('#' + e.target.id.replace(/submit-/, '')).addSelectedToMenu( api.addMenuItemToBottom );
1059                                         return false;
1060                                 } else if ( target.hasClass('page-numbers') ) {
1061                                         $.post( ajaxurl, e.target.href.replace(/.*\?/, '').replace(/action=([^&]*)/, '') + '&action=menu-get-metabox',
1062                                                 function( resp ) {
1063                                                         if ( -1 == resp.indexOf('replace-id') )
1064                                                                 return;
1065
1066                                                         var metaBoxData = $.parseJSON(resp),
1067                                                         toReplace = document.getElementById(metaBoxData['replace-id']),
1068                                                         placeholder = document.createElement('div'),
1069                                                         wrap = document.createElement('div');
1070
1071                                                         if ( ! metaBoxData.markup || ! toReplace )
1072                                                                 return;
1073
1074                                                         wrap.innerHTML = metaBoxData.markup ? metaBoxData.markup : '';
1075
1076                                                         toReplace.parentNode.insertBefore( placeholder, toReplace );
1077                                                         placeholder.parentNode.removeChild( toReplace );
1078
1079                                                         placeholder.parentNode.insertBefore( wrap, placeholder );
1080
1081                                                         placeholder.parentNode.removeChild( placeholder );
1082
1083                                                 }
1084                                         );
1085
1086                                         return false;
1087                                 }
1088                         });
1089                 },
1090
1091                 eventOnClickEditLink : function(clickedEl) {
1092                         var settings, item,
1093                         matchedSection = /#(.*)$/.exec(clickedEl.href);
1094                         if ( matchedSection && matchedSection[1] ) {
1095                                 settings = $('#'+matchedSection[1]);
1096                                 item = settings.parent();
1097                                 if( 0 !== item.length ) {
1098                                         if( item.hasClass('menu-item-edit-inactive') ) {
1099                                                 if( ! settings.data('menu-item-data') ) {
1100                                                         settings.data( 'menu-item-data', settings.getItemData() );
1101                                                 }
1102                                                 settings.slideDown('fast');
1103                                                 item.removeClass('menu-item-edit-inactive')
1104                                                         .addClass('menu-item-edit-active');
1105                                         } else {
1106                                                 settings.slideUp('fast');
1107                                                 item.removeClass('menu-item-edit-active')
1108                                                         .addClass('menu-item-edit-inactive');
1109                                         }
1110                                         return false;
1111                                 }
1112                         }
1113                 },
1114
1115                 eventOnClickCancelLink : function(clickedEl) {
1116                         var settings = $( clickedEl ).closest( '.menu-item-settings' ),
1117                                 thisMenuItem = $( clickedEl ).closest( '.menu-item' );
1118                         thisMenuItem.removeClass('menu-item-edit-active').addClass('menu-item-edit-inactive');
1119                         settings.setItemData( settings.data('menu-item-data') ).hide();
1120                         return false;
1121                 },
1122
1123                 eventOnClickMenuSave : function() {
1124                         var locs = '',
1125                         menuName = $('#menu-name'),
1126                         menuNameVal = menuName.val();
1127                         // Cancel and warn if invalid menu name
1128                         if( !menuNameVal || menuNameVal == menuName.attr('title') || !menuNameVal.replace(/\s+/, '') ) {
1129                                 menuName.parent().addClass('form-invalid');
1130                                 return false;
1131                         }
1132                         // Copy menu theme locations
1133                         $('#nav-menu-theme-locations select').each(function() {
1134                                 locs += '<input type="hidden" name="' + this.name + '" value="' + $(this).val() + '" />';
1135                         });
1136                         $('#update-nav-menu').append( locs );
1137                         // Update menu item position data
1138                         api.menuList.find('.menu-item-data-position').val( function(index) { return index + 1; } );
1139                         window.onbeforeunload = null;
1140
1141                         return true;
1142                 },
1143
1144                 eventOnClickMenuDelete : function() {
1145                         // Delete warning AYS
1146                         if ( window.confirm( navMenuL10n.warnDeleteMenu ) ) {
1147                                 window.onbeforeunload = null;
1148                                 return true;
1149                         }
1150                         return false;
1151                 },
1152
1153                 eventOnClickMenuItemDelete : function(clickedEl) {
1154                         var itemID = parseInt(clickedEl.id.replace('delete-', ''), 10);
1155                         api.removeMenuItem( $('#menu-item-' + itemID) );
1156                         api.registerChange();
1157                         return false;
1158                 },
1159
1160                 /**
1161                  * Process the quick search response into a search result
1162                  *
1163                  * @param string resp The server response to the query.
1164                  * @param object req The request arguments.
1165                  * @param jQuery panel The tabs panel we're searching in.
1166                  */
1167                 processQuickSearchQueryResponse : function(resp, req, panel) {
1168                         var matched, newID,
1169                         takenIDs = {},
1170                         form = document.getElementById('nav-menu-meta'),
1171                         pattern = /menu-item[(\[^]\]*/,
1172                         $items = $('<div>').html(resp).find('li'),
1173                         $item;
1174
1175                         if( ! $items.length ) {
1176                                 $('.categorychecklist', panel).html( '<li><p>' + navMenuL10n.noResultsFound + '</p></li>' );
1177                                 $( '.spinner', panel ).removeClass( 'is-active' );
1178                                 return;
1179                         }
1180
1181                         $items.each(function(){
1182                                 $item = $(this);
1183
1184                                 // make a unique DB ID number
1185                                 matched = pattern.exec($item.html());
1186
1187                                 if ( matched && matched[1] ) {
1188                                         newID = matched[1];
1189                                         while( form.elements['menu-item[' + newID + '][menu-item-type]'] || takenIDs[ newID ] ) {
1190                                                 newID--;
1191                                         }
1192
1193                                         takenIDs[newID] = true;
1194                                         if ( newID != matched[1] ) {
1195                                                 $item.html( $item.html().replace(new RegExp(
1196                                                         'menu-item\\[' + matched[1] + '\\]', 'g'),
1197                                                         'menu-item[' + newID + ']'
1198                                                 ) );
1199                                         }
1200                                 }
1201                         });
1202
1203                         $('.categorychecklist', panel).html( $items );
1204                         $( '.spinner', panel ).removeClass( 'is-active' );
1205                 },
1206
1207                 removeMenuItem : function(el) {
1208                         var children = el.childMenuItems();
1209
1210                         el.addClass('deleting').animate({
1211                                         opacity : 0,
1212                                         height: 0
1213                                 }, 350, function() {
1214                                         var ins = $('#menu-instructions');
1215                                         el.remove();
1216                                         children.shiftDepthClass( -1 ).updateParentMenuItemDBId();
1217                                         if ( 0 === $( '#menu-to-edit li' ).length ) {
1218                                                 $( '.drag-instructions' ).hide();
1219                                                 ins.removeClass( 'menu-instructions-inactive' );
1220                                         }
1221                                         api.refreshAdvancedAccessibility();
1222                                 });
1223                 },
1224
1225                 depthToPx : function(depth) {
1226                         return depth * api.options.menuItemDepthPerLevel;
1227                 },
1228
1229                 pxToDepth : function(px) {
1230                         return Math.floor(px / api.options.menuItemDepthPerLevel);
1231                 }
1232
1233         };
1234
1235         $(document).ready(function(){ wpNavMenu.init(); });
1236
1237 })(jQuery);