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