1/**
  2 * WordPress Administration Navigation Menu
  3 * Interface JS functions
  4 *
  5 * @version 2.0.0
  6 *
  7 * @package WordPress
  8 * @subpackage Administration
  9 * @output wp-admin/js/nav-menu.js
 10 */
 11
 12/* global menus, postboxes, columns, isRtl, ajaxurl, wpNavMenu */
 13
 14(function($) {
 15
 16	var api;
 17
 18	/**
 19	 * Contains all the functions to handle WordPress navigation menus administration.
 20	 *
 21	 * @namespace wpNavMenu
 22	 */
 23	api = window.wpNavMenu = {
 24
 25		options : {
 26			menuItemDepthPerLevel : 30, // Do not use directly. Use depthToPx and pxToDepth instead.
 27			globalMaxDepth:  11,
 28			sortableItems:   '> *',
 29			targetTolerance: 0
 30		},
 31
 32		menuList : undefined,	// Set in init.
 33		targetList : undefined, // Set in init.
 34		menusChanged : false,
 35		isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),
 36		negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,
 37		lastSearch: '',
 38
 39		// Functions that run on init.
 40		init : function() {
 41			api.menuList = $('#menu-to-edit');
 42			api.targetList = api.menuList;
 43
 44			this.jQueryExtensions();
 45
 46			this.attachMenuEditListeners();
 47
 48			this.attachBulkSelectButtonListeners();
 49			this.attachMenuCheckBoxListeners();
 50			this.attachMenuItemDeleteButton();
 51			this.attachPendingMenuItemsListForDeletion();
 52
 53			this.attachQuickSearchListeners();
 54			this.attachThemeLocationsListeners();
 55			this.attachMenuSaveSubmitListeners();
 56
 57			this.attachTabsPanelListeners();
 58
 59			this.attachUnsavedChangesListener();
 60
 61			if ( api.menuList.length )
 62				this.initSortables();
 63
 64			if ( menus.oneThemeLocationNoMenus )
 65				$( '#posttype-page' ).addSelectedToMenu( api.addMenuItemToBottom );
 66
 67			this.initManageLocations();
 68
 69			this.initAccessibility();
 70
 71			this.initToggles();
 72
 73			this.initPreviewing();
 74		},
 75
 76		jQueryExtensions : function() {
 77			// jQuery extensions.
 78			$.fn.extend({
 79				menuItemDepth : function() {
 80					var margin = api.isRTL ? this.eq(0).css('margin-right') : this.eq(0).css('margin-left');
 81					return api.pxToDepth( margin && -1 != margin.indexOf('px') ? margin.slice(0, -2) : 0 );
 82				},
 83				updateDepthClass : function(current, prev) {
 84					return this.each(function(){
 85						var t = $(this);
 86						prev = prev || t.menuItemDepth();
 87						$(this).removeClass('menu-item-depth-'+ prev )
 88							.addClass('menu-item-depth-'+ current );
 89					});
 90				},
 91				shiftDepthClass : function(change) {
 92					return this.each(function(){
 93						var t = $(this),
 94							depth = t.menuItemDepth(),
 95							newDepth = depth + change;
 96
 97						t.removeClass( 'menu-item-depth-'+ depth )
 98							.addClass( 'menu-item-depth-'+ ( newDepth ) );
 99
100						if ( 0 === newDepth ) {
101							t.find( '.is-submenu' ).hide();
102						}
103					});
104				},
105				childMenuItems : function() {
106					var result = $();
107					this.each(function(){
108						var t = $(this), depth = t.menuItemDepth(), next = t.next( '.menu-item' );
109						while( next.length && next.menuItemDepth() > depth ) {
110							result = result.add( next );
111							next = next.next( '.menu-item' );
112						}
113					});
114					return result;
115				},
116				shiftHorizontally : function( dir ) {
117					return this.each(function(){
118						var t = $(this),
119							depth = t.menuItemDepth(),
120							newDepth = depth + dir;
121
122						// Change .menu-item-depth-n class.
123						t.moveHorizontally( newDepth, depth );
124					});
125				},
126				moveHorizontally : function( newDepth, depth ) {
127					return this.each(function(){
128						var t = $(this),
129							children = t.childMenuItems(),
130							diff = newDepth - depth,
131							subItemText = t.find('.is-submenu');
132
133						// Change .menu-item-depth-n class.
134						t.updateDepthClass( newDepth, depth ).updateParentMenuItemDBId();
135
136						// If it has children, move those too.
137						if ( children ) {
138							children.each(function() {
139								var t = $(this),
140									thisDepth = t.menuItemDepth(),
141									newDepth = thisDepth + diff;
142								t.updateDepthClass(newDepth, thisDepth).updateParentMenuItemDBId();
143							});
144						}
145
146						// Show "Sub item" helper text.
147						if (0 === newDepth)
148							subItemText.hide();
149						else
150							subItemText.show();
151					});
152				},
153				updateParentMenuItemDBId : function() {
154					return this.each(function(){
155						var item = $(this),
156							input = item.find( '.menu-item-data-parent-id' ),
157							depth = parseInt( item.menuItemDepth(), 10 ),
158							parentDepth = depth - 1,
159							parent = item.prevAll( '.menu-item-depth-' + parentDepth ).first();
160
161						if ( 0 === depth ) { // Item is on the top level, has no parent.
162							input.val(0);
163						} else { // Find the parent item, and retrieve its object id.
164							input.val( parent.find( '.menu-item-data-db-id' ).val() );
165						}
166					});
167				},
168				hideAdvancedMenuItemFields : function() {
169					return this.each(function(){
170						var that = $(this);
171						$('.hide-column-tog').not(':checked').each(function(){
172							that.find('.field-' + $(this).val() ).addClass('hidden-field');
173						});
174					});
175				},
176				/**
177				 * Adds selected menu items to the menu.
178				 *
179				 * @ignore
180				 *
181				 * @param jQuery metabox The metabox jQuery object.
182				 */
183				addSelectedToMenu : function(processMethod) {
184					if ( 0 === $('#menu-to-edit').length ) {
185						return false;
186					}
187
188					return this.each(function() {
189						var t = $(this), menuItems = {},
190							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' ),
191							re = /menu-item\[([^\]]*)/;
192
193						processMethod = processMethod || api.addMenuItemToBottom;
194
195						// If no items are checked, bail.
196						if ( !checkboxes.length )
197							return false;
198
199						// Show the Ajax spinner.
200						t.find( '.button-controls .spinner' ).addClass( 'is-active' );
201
202						// Retrieve menu item data.
203						$(checkboxes).each(function(){
204							var t = $(this),
205								listItemDBIDMatch = re.exec( t.attr('name') ),
206								listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);
207
208							if ( this.className && -1 != this.className.indexOf('add-to-top') )
209								processMethod = api.addMenuItemToTop;
210							menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );
211						});
212
213						// Add the items.
214						api.addItemToMenu(menuItems, processMethod, function(){
215							// Deselect the items and hide the Ajax spinner.
216							checkboxes.prop( 'checked', false );
217							t.find( '.button-controls .select-all' ).prop( 'checked', false );
218							t.find( '.button-controls .spinner' ).removeClass( 'is-active' );
219							t.updateParentDropdown();
220							t.updateOrderDropdown();
221						});
222					});
223				},
224				getItemData : function( itemType, id ) {
225					itemType = itemType || 'menu-item';
226
227					var itemData = {}, i,
228					fields = [
229						'menu-item-db-id',
230						'menu-item-object-id',
231						'menu-item-object',
232						'menu-item-parent-id',
233						'menu-item-position',
234						'menu-item-type',
235						'menu-item-title',
236						'menu-item-url',
237						'menu-item-description',
238						'menu-item-attr-title',
239						'menu-item-target',
240						'menu-item-classes',
241						'menu-item-xfn'
242					];
243
244					if( !id && itemType == 'menu-item' ) {
245						id = this.find('.menu-item-data-db-id').val();
246					}
247
248					if( !id ) return itemData;
249
250					this.find('input').each(function() {
251						var field;
252						i = fields.length;
253						while ( i-- ) {
254							if( itemType == 'menu-item' )
255								field = fields[i] + '[' + id + ']';
256							else if( itemType == 'add-menu-item' )
257								field = 'menu-item[' + id + '][' + fields[i] + ']';
258
259							if (
260								this.name &&
261								field == this.name
262							) {
263								itemData[fields[i]] = this.value;
264							}
265						}
266					});
267
268					return itemData;
269				},
270				setItemData : function( itemData, itemType, id ) { // Can take a type, such as 'menu-item', or an id.
271					itemType = itemType || 'menu-item';
272
273					if( !id && itemType == 'menu-item' ) {
274						id = $('.menu-item-data-db-id', this).val();
275					}
276
277					if( !id ) return this;
278
279					this.find('input').each(function() {
280						var t = $(this), field;
281						$.each( itemData, function( attr, val ) {
282							if( itemType == 'menu-item' )
283								field = attr + '[' + id + ']';
284							else if( itemType == 'add-menu-item' )
285								field = 'menu-item[' + id + '][' + attr + ']';
286
287							if ( field == t.attr('name') ) {
288								t.val( val );
289							}
290						});
291					});
292					return this;
293				},
294				updateParentDropdown : function() {
295					return this.each(function(){
296						var menuItems = $( '#menu-to-edit li' ),
297							parentDropdowns = $( '.edit-menu-item-parent' );
298
299						$.each( parentDropdowns, function() {
300							var parentDropdown = $( this ),
301								currentItemID = parseInt( parentDropdown.closest( 'li.menu-item' ).find( '.menu-item-data-db-id' ).val() ),
302								currentParentID = parseInt( parentDropdown.closest( 'li.menu-item' ).find( '.menu-item-data-parent-id' ).val() ),
303								currentItem = parentDropdown.closest( 'li.menu-item' ),
304								currentMenuItemChild = currentItem.childMenuItems(),
305								excludeMenuItem =  /** @type {number[]} */ [ currentItemID ];
306
307							parentDropdown.empty();
308
309							if ( currentMenuItemChild.length > 0 ) {
310								$.each( currentMenuItemChild, function(){
311									var childItem = $(this),
312										childID = parseInt( childItem.find( '.menu-item-data-db-id' ).val() );
313
314									excludeMenuItem.push( childID );
315								});
316							}
317
318							parentDropdown.append(
319								$( '<option>', {
320									value: '0',
321									selected: currentParentID === 0,
322									text: wp.i18n._x( 'No Parent', 'menu item without a parent in navigation menu' ),
323								} )
324							);
325
326							$.each( menuItems, function() {
327								var menuItem = $(this),
328								menuID = parseInt( menuItem.find( '.menu-item-data-db-id' ).val() ),
329								menuTitle = menuItem.find( '.edit-menu-item-title' ).val();
330
331								if ( ! excludeMenuItem.includes( menuID ) ) {
332									parentDropdown.append(
333										$( '<option>', {
334											value: menuID.toString(),
335											selected: currentParentID === menuID,
336											text: menuTitle,
337										} )
338									);
339								}
340							});
341						});
342						
343					});
344				},
345				updateOrderDropdown : function() {
346					return this.each( function() {
347						var itemPosition,
348							orderDropdowns = $( '.edit-menu-item-order' );
349
350						$.each( orderDropdowns, function() {
351							var orderDropdown = $( this ),
352								menuItem = orderDropdown.closest( 'li.menu-item' ).first(),
353								depth = menuItem.menuItemDepth(),
354								isPrimaryMenuItem = ( 0 === depth );
355
356							orderDropdown.empty();
357
358							if ( isPrimaryMenuItem ) {
359								var primaryItems = $( '.menu-item-depth-0' ),
360									totalMenuItems = primaryItems.length;
361
362								itemPosition = primaryItems.index( menuItem ) + 1;
363
364								for ( let i = 1; i < totalMenuItems + 1; i++ ) {
365									var itemString = wp.i18n.sprintf(
366										/* translators: 1: The current menu item number, 2: The total number of menu items. */
367										wp.i18n._x( '%1$s of %2$s', 'part of a total number of menu items' ),
368										i,
369										totalMenuItems
370									);
371									orderDropdown.append(
372										$( '<option>', {
373											selected: i === itemPosition,
374											value: i.toString(),
375											text: itemString,
376										} )
377									);
378								}
379
380							} else {
381								var parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),
382									parentItemId = parentItem.find( '.menu-item-data-db-id' ).val(),
383									subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemId + '"]' ),
384									totalSubMenuItems = subItems.length;
385
386								itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;
387
388								for ( let i = 1; i < totalSubMenuItems + 1; i++ ) {
389									var submenuString = wp.i18n.sprintf(
390										/* translators: 1: The current submenu item number, 2: The total number of submenu items. */
391										wp.i18n._x( '%1$s of %2$s', 'part of a total number of menu items' ),
392										i,
393										totalSubMenuItems
394									);
395									orderDropdown.append(
396										$( '<option>', {
397											selected: i === itemPosition,
398											value: i.toString(),
399											text: submenuString,
400										} )
401									);
402								}
403
404							}
405						});
406						
407					});
408				}
409			});
410		},
411
412		countMenuItems : function( depth ) {
413			return $( '.menu-item-depth-' + depth ).length;
414		},
415
416		moveMenuItem : function( $this, dir ) {
417			var items, newItemPosition, newDepth,
418				menuItems = $( '#menu-to-edit li' ),
419				menuItemsCount = menuItems.length,
420				thisItem = $this.parents( 'li.menu-item' ),
421				thisItemChildren = thisItem.childMenuItems(),
422				thisItemData = thisItem.getItemData(),
423				thisItemDepth = parseInt( thisItem.menuItemDepth(), 10 ),
424				thisItemPosition = parseInt( thisItem.index(), 10 ),
425				nextItem = thisItem.next(),
426				nextItemChildren = nextItem.childMenuItems(),
427				nextItemDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1,
428				prevItem = thisItem.prev(),
429				prevItemDepth = parseInt( prevItem.menuItemDepth(), 10 ),
430				prevItemId = prevItem.getItemData()['menu-item-db-id'],
431				a11ySpeech = menus[ 'moved' + dir.charAt(0).toUpperCase() + dir.slice(1) ];
432
433			switch ( dir ) {
434			case 'up':
435				newItemPosition = thisItemPosition - 1;
436
437				// Already at top.
438				if ( 0 === thisItemPosition )
439					break;
440
441				// If a sub item is moved to top, shift it to 0 depth.
442				if ( 0 === newItemPosition && 0 !== thisItemDepth )
443					thisItem.moveHorizontally( 0, thisItemDepth );
444
445				// If prev item is sub item, shift to match depth.
446				if ( 0 !== prevItemDepth )
447					thisItem.moveHorizontally( prevItemDepth, thisItemDepth );
448
449				// Does this item have sub items?
450				if ( thisItemChildren ) {
451					items = thisItem.add( thisItemChildren );
452					// Move the entire block.
453					items.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
454				} else {
455					thisItem.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
456				}
457				break;
458			case 'down':
459				// Does this item have sub items?
460				if ( thisItemChildren ) {
461					items = thisItem.add( thisItemChildren ),
462						nextItem = menuItems.eq( items.length + thisItemPosition ),
463						nextItemChildren = 0 !== nextItem.childMenuItems().length;
464
465					if ( nextItemChildren ) {
466						newDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1;
467						thisItem.moveHorizontally( newDepth, thisItemDepth );
468					}
469
470					// Have we reached the bottom?
471					if ( menuItemsCount === thisItemPosition + items.length )
472						break;
473
474					items.detach().insertAfter( menuItems.eq( thisItemPosition + items.length ) ).updateParentMenuItemDBId();
475				} else {
476					// If next item has sub items, shift depth.
477					if ( 0 !== nextItemChildren.length )
478						thisItem.moveHorizontally( nextItemDepth, thisItemDepth );
479
480					// Have we reached the bottom?
481					if ( menuItemsCount === thisItemPosition + 1 )
482						break;
483					thisItem.detach().insertAfter( menuItems.eq( thisItemPosition + 1 ) ).updateParentMenuItemDBId();
484				}
485				break;
486			case 'top':
487				// Already at top.
488				if ( 0 === thisItemPosition )
489					break;
490				// Does this item have sub items?
491				if ( thisItemChildren ) {
492					items = thisItem.add( thisItemChildren );
493					// Move the entire block.
494					items.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
495				} else {
496					thisItem.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
497				}
498				break;
499			case 'left':
500				// As far left as possible.
501				if ( 0 === thisItemDepth )
502					break;
503				thisItem.shiftHorizontally( -1 );
504				break;
505			case 'right':
506				// Can't be sub item at top.
507				if ( 0 === thisItemPosition )
508					break;
509				// Already sub item of prevItem.
510				if ( thisItemData['menu-item-parent-id'] === prevItemId )
511					break;
512				thisItem.shiftHorizontally( 1 );
513				break;
514			}
515			$this.trigger( 'focus' );
516			api.registerChange();
517			api.refreshKeyboardAccessibility();
518			api.refreshAdvancedAccessibility();
519			thisItem.updateParentDropdown();
520			thisItem.updateOrderDropdown();
521
522			if ( a11ySpeech ) {
523				wp.a11y.speak( a11ySpeech );
524			}
525		},
526
527		initAccessibility : function() {
528			var menu = $( '#menu-to-edit' );
529
530			api.refreshKeyboardAccessibility();
531			api.refreshAdvancedAccessibility();
532
533			// Refresh the accessibility when the user comes close to the item in any way.
534			menu.on( 'mouseenter.refreshAccessibility focus.refreshAccessibility touchstart.refreshAccessibility' , '.menu-item' , function(){
535				api.refreshAdvancedAccessibilityOfItem( $( this ).find( 'a.item-edit' ) );
536			} );
537
538			// We have to update on click as well because we might hover first, change the item, and then click.
539			menu.on( 'click', 'a.item-edit', function() {
540				api.refreshAdvancedAccessibilityOfItem( $( this ) );
541			} );
542
543			// Links for moving items.
544			menu.on( 'click', '.menus-move', function () {
545				var $this = $( this ),
546					dir = $this.data( 'dir' );
547
548				if ( 'undefined' !== typeof dir ) {
549					api.moveMenuItem( $( this ).parents( 'li.menu-item' ).find( 'a.item-edit' ), dir );
550				}
551			});
552
553			// Set menu parents data for all menu items.
554			menu.updateParentDropdown();
555
556			// Set menu order data for all menu items.
557			menu.updateOrderDropdown();
558
559			// Update menu item parent when value is changed.
560			menu.on( 'change', '.edit-menu-item-parent', function() {
561				api.changeMenuParent( $( this ) );
562			});
563			
564			// Update menu item order when value is changed.
565			menu.on( 'change', '.edit-menu-item-order', function() {
566				api.changeMenuOrder( $( this ) );
567			});
568		},
569
570		/**
571		 * changeMenuParent( [parentDropdown] )
572		 * 
573		 * @since 6.7.0
574		 *
575		 * @param {object} parentDropdown select field
576		 */
577		changeMenuParent : function( parentDropdown ) {
578			var menuItemNewPosition,
579				menuItems = $( '#menu-to-edit li' ),
580				$this = $( parentDropdown ),
581				newParentID = $this.val(),
582				menuItem = $this.closest( 'li.menu-item' ).first(),
583				menuItemOldDepth = menuItem.menuItemDepth(),
584				menuItemChildren = menuItem.childMenuItems(),
585				menuItemNoChildren = parseInt( menuItem.childMenuItems().length, 10 ),
586				parentItem = $( '#menu-item-' + newParentID ),
587				parentItemDepth = parentItem.menuItemDepth(),
588				menuItemNewDepth = parseInt( parentItemDepth ) + 1;
589
590			if ( newParentID == 0 ) {
591				menuItemNewDepth = 0;
592			}
593
594			menuItem.find( '.menu-item-data-parent-id' ).val( newParentID );
595			menuItem.moveHorizontally( menuItemNewDepth, menuItemOldDepth );
596
597			if ( menuItemNoChildren > 0 ) {
598				menuItem = menuItem.add( menuItemChildren );
599			}
600			menuItem.detach();
601
602			menuItems = $( '#menu-to-edit li' );
603
604			var	parentItemPosition = parseInt( parentItem.index(), 10 ),
605				parentItemNoChild = parseInt( parentItem.childMenuItems().length, 10 );
606
607			if ( parentItemNoChild > 0 ){
608				menuItemNewPosition = parentItemPosition + parentItemNoChild;
609			} else {
610				menuItemNewPosition = parentItemPosition;
611			}
612
613			if ( newParentID == 0 ) {
614				menuItemNewPosition = menuItems.length - 1;
615			}
616
617			menuItem.insertAfter( menuItems.eq( menuItemNewPosition ) ).updateParentMenuItemDBId().updateParentDropdown().updateOrderDropdown();
618
619			api.registerChange();
620			api.refreshKeyboardAccessibility();
621			api.refreshAdvancedAccessibility();
622			$this.trigger( 'focus' );
623			wp.a11y.speak( menus.parentUpdated, 'polite' );
624		},
625
626		/**
627		 * changeMenuOrder( [OrderDropdown] )
628		 * 
629		 * @since 6.7.0
630		 *
631		 * @param {object} orderDropdown select field
632		 */
633		changeMenuOrder : function( orderDropdown ) {
634			var menuItems = $( '#menu-to-edit li' ),
635				$this = $( orderDropdown ),
636				newOrderID = parseInt( $this.val(), 10),
637				menuItem = $this.closest( 'li.menu-item' ).first(),
638				menuItemChildren = menuItem.childMenuItems(),
639				menuItemNoChildren = menuItemChildren.length,
640				menuItemCurrentPosition = parseInt( menuItem.index(), 10 ),
641				parentItemID = menuItem.find( '.menu-item-data-parent-id' ).val(),
642				subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemID + '"]' ),
643				currentItemAtPosition = $(subItems[newOrderID - 1]).closest( 'li.menu-item' );
644
645			if ( menuItemNoChildren > 0 ) {
646				menuItem = menuItem.add( menuItemChildren );
647			}
648
649			var currentItemNoChildren = currentItemAtPosition.childMenuItems().length,
650				currentItemPosition = parseInt( currentItemAtPosition.index(), 10 );
651
652			menuItems = $( '#menu-to-edit li' );
653
654			var	menuItemNewPosition = currentItemPosition;
655
656			if(menuItemCurrentPosition > menuItemNewPosition){
657				menuItemNewPosition = currentItemPosition;
658				menuItem.detach().insertBefore( menuItems.eq( menuItemNewPosition ) ).updateOrderDropdown();
659			} else {
660				menuItemNewPosition = menuItemNewPosition + currentItemNoChildren;
661				menuItem.detach().insertAfter( menuItems.eq( menuItemNewPosition ) ).updateOrderDropdown();
662			}
663
664			api.registerChange();
665			api.refreshKeyboardAccessibility();
666			api.refreshAdvancedAccessibility();
667			$this.trigger( 'focus' );
668			wp.a11y.speak( menus.orderUpdated, 'polite' );
669		},
670
671		/**
672		 * refreshAdvancedAccessibilityOfItem( [itemToRefresh] )
673		 *
674		 * Refreshes advanced accessibility buttons for one menu item.
675		 * Shows or hides buttons based on the location of the menu item.
676		 *
677		 * @param {Object} itemToRefresh The menu item that might need its advanced accessibility buttons refreshed
678		 */
679		refreshAdvancedAccessibilityOfItem : function( itemToRefresh ) {
680
681			// Only refresh accessibility when necessary.
682			if ( true !== $( itemToRefresh ).data( 'needs_accessibility_refresh' ) ) {
683				return;
684			}
685
686			var thisLink, thisLinkText, primaryItems, itemPosition, title,
687				parentItem, parentItemId, parentItemName, subItems, totalSubItems,
688				$this = $( itemToRefresh ),
689				menuItem = $this.closest( 'li.menu-item' ).first(),
690				depth = menuItem.menuItemDepth(),
691				isPrimaryMenuItem = ( 0 === depth ),
692				itemName = $this.closest( '.menu-item-handle' ).find( '.menu-item-title' ).text(),
693				menuItemType = $this.closest( '.menu-item-handle' ).find( '.item-controls' ).find( '.item-type' ).text(),
694				position = parseInt( menuItem.index(), 10 ),
695				prevItemDepth = ( isPrimaryMenuItem ) ? depth : parseInt( depth - 1, 10 ),
696				prevItemNameLeft = menuItem.prevAll('.menu-item-depth-' + prevItemDepth).first().find( '.menu-item-title' ).text(),
697				prevItemNameRight = menuItem.prevAll('.menu-item-depth-' + depth).first().find( '.menu-item-title' ).text(),
698				totalMenuItems = $('#menu-to-edit li').length,
699				hasSameDepthSibling = menuItem.nextAll( '.menu-item-depth-' + depth ).length;
700
701				menuItem.find( '.field-move' ).toggle( totalMenuItems > 1 );
702
703			// Where can they move this menu item?
704			if ( 0 !== position ) {
705				thisLink = menuItem.find( '.menus-move-up' );
706				thisLink.attr( 'aria-label', menus.moveUp ).css( 'display', 'inline' );
707			}
708
709			if ( 0 !== position && isPrimaryMenuItem ) {
710				thisLink = menuItem.find( '.menus-move-top' );
711				thisLink.attr( 'aria-label', menus.moveToTop ).css( 'display', 'inline' );
712			}
713
714			if ( position + 1 !== totalMenuItems && 0 !== position ) {
715				thisLink = menuItem.find( '.menus-move-down' );
716				thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
717			}
718
719			if ( 0 === position && 0 !== hasSameDepthSibling ) {
720				thisLink = menuItem.find( '.menus-move-down' );
721				thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
722			}
723
724			if ( ! isPrimaryMenuItem ) {
725				thisLink = menuItem.find( '.menus-move-left' ),
726				thisLinkText = menus.outFrom.replace( '%s', prevItemNameLeft );
727				thisLink.attr( 'aria-label', menus.moveOutFrom.replace( '%s', prevItemNameLeft ) ).text( thisLinkText ).css( 'display', 'inline' );
728			}
729
730			if ( 0 !== position ) {
731				if ( menuItem.find( '.menu-item-data-parent-id' ).val() !== menuItem.prev().find( '.menu-item-data-db-id' ).val() ) {
732					thisLink = menuItem.find( '.menus-move-right' ),
733					thisLinkText = menus.under.replace( '%s', prevItemNameRight );
734					thisLink.attr( 'aria-label', menus.moveUnder.replace( '%s', prevItemNameRight ) ).text( thisLinkText ).css( 'display', 'inline' );
735				}
736			}
737
738			if ( isPrimaryMenuItem ) {
739				primaryItems = $( '.menu-item-depth-0' ),
740				itemPosition = primaryItems.index( menuItem ) + 1,
741				totalMenuItems = primaryItems.length,
742				// String together help text for primary menu items.
743				title = menus.menuFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalMenuItems );
744			} else {
745				parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),
746				parentItemId = parentItem.find( '.menu-item-data-db-id' ).val(),
747				parentItemName = parentItem.find( '.menu-item-title' ).text(),
748				subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemId + '"]' ),
749				totalSubItems = subItems.length,
750				itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;
751
752				// String together help text for sub menu items.
753				if ( depth < 2 ) {
754					title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalSubItems ).replace( '%5$s', parentItemName );
755				} else {
756					title = menus.subMenuMoreDepthFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalSubItems ).replace( '%5$s', parentItemName ).replace( '%6$d', depth );
757				}
758			}
759
760			$this.attr( 'aria-label', title );
761
762			// Mark this item's accessibility as refreshed.
763			$this.data( 'needs_accessibility_refresh', false );
764		},
765
766		/**
767		 * refreshAdvancedAccessibility
768		 *
769		 * Hides all advanced accessibility buttons and marks them for refreshing.
770		 */
771		refreshAdvancedAccessibility : function() {
772
773			// Hide all the move buttons by default.
774			$( '.menu-item-settings .field-move .menus-move' ).hide();
775
776			// Mark all menu items as unprocessed.
777			$( 'a.item-edit' ).data( 'needs_accessibility_refresh', true );
778
779			// All open items have to be refreshed or they will show no links.
780			$( '.menu-item-edit-active a.item-edit' ).each( function() {
781				api.refreshAdvancedAccessibilityOfItem( this );
782			} );
783		},
784
785		refreshKeyboardAccessibility : function() {
786			$( 'a.item-edit' ).off( 'focus' ).on( 'focus', function(){
787				$(this).off( 'keydown' ).on( 'keydown', function(e){
788
789					var arrows,
790						$this = $( this ),
791						thisItem = $this.parents( 'li.menu-item' ),
792						thisItemData = thisItem.getItemData();
793
794					// Bail if it's not an arrow key.
795					if ( 37 != e.which && 38 != e.which && 39 != e.which && 40 != e.which )
796						return;
797
798					// Avoid multiple keydown events.
799					$this.off('keydown');
800
801					// Bail if there is only one menu item.
802					if ( 1 === $('#menu-to-edit li').length )
803						return;
804
805					// If RTL, swap left/right arrows.
806					arrows = { '38': 'up', '40': 'down', '37': 'left', '39': 'right' };
807					if ( $('body').hasClass('rtl') )
808						arrows = { '38' : 'up', '40' : 'down', '39' : 'left', '37' : 'right' };
809
810					switch ( arrows[e.which] ) {
811					case 'up':
812						api.moveMenuItem( $this, 'up' );
813						break;
814					case 'down':
815						api.moveMenuItem( $this, 'down' );
816						break;
817					case 'left':
818						api.moveMenuItem( $this, 'left' );
819						break;
820					case 'right':
821						api.moveMenuItem( $this, 'right' );
822						break;
823					}
824					// Put focus back on same menu item.
825					$( '#edit-' + thisItemData['menu-item-db-id'] ).trigger( 'focus' );
826					return false;
827				});
828			});
829		},
830
831		initPreviewing : function() {
832			// Update the item handle title when the navigation label is changed.
833			$( '#menu-to-edit' ).on( 'change input', '.edit-menu-item-title', function(e) {
834				var input = $( e.currentTarget ), title, titleEl;
835				title = input.val();
836				titleEl = input.closest( '.menu-item' ).find( '.menu-item-title' );
837				// Don't update to empty title.
838				if ( title ) {
839					titleEl.text( title ).removeClass( 'no-title' );
840				} else {
841					titleEl.text( wp.i18n._x( '(no label)', 'missing menu item navigation label' ) ).addClass( 'no-title' );
842				}
843			} );
844		},
845
846		initToggles : function() {
847			// Init postboxes.
848			postboxes.add_postbox_toggles('nav-menus');
849
850			// Adjust columns functions for menus UI.
851			columns.useCheckboxesForHidden();
852			columns.checked = function(field) {
853				$('.field-' + field).removeClass('hidden-field');
854			};
855			columns.unchecked = function(field) {
856				$('.field-' + field).addClass('hidden-field');
857			};
858			// Hide fields.
859			api.menuList.hideAdvancedMenuItemFields();
860
861			$('.hide-postbox-tog').on( 'click', function () {
862				var hidden = $( '.accordion-container li.accordion-section' ).filter(':hidden').map(function() { return this.id; }).get().join(',');
863				$.post(ajaxurl, {
864					action: 'closed-postboxes',
865					hidden: hidden,
866					closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
867					page: 'nav-menus'
868				});
869			});
870		},
871
872		initSortables : function() {
873			var currentDepth = 0, originalDepth, minDepth, maxDepth,
874				prev, next, prevBottom, nextThreshold, helperHeight, transport,
875				menuEdge = api.menuList.offset().left,
876				body = $('body'), maxChildDepth,
877				menuMaxDepth = initialMenuMaxDepth();
878
879			if( 0 !== $( '#menu-to-edit li' ).length )
880				$( '.drag-instructions' ).show();
881
882			// Use the right edge if RTL.
883			menuEdge += api.isRTL ? api.menuList.width() : 0;
884
885			api.menuList.sortable({
886				handle: '.menu-item-handle',
887				placeholder: 'sortable-placeholder',
888				items: api.options.sortableItems,
889				start: function(e, ui) {
890					var height, width, parent, children, tempHolder;
891
892					// Handle placement for RTL orientation.
893					if ( api.isRTL )
894						ui.item[0].style.right = 'auto';
895
896					transport = ui.item.children('.menu-item-transport');
897
898					// Set depths. currentDepth must be set before children are located.
899					originalDepth = ui.item.menuItemDepth();
900					updateCurrentDepth(ui, originalDepth);
901
902					// Attach child elements to parent.
903					// Skip the placeholder.
904					parent = ( ui.item.next()[0] == ui.placeholder[0] ) ? ui.item.next() : ui.item;
905					children = parent.childMenuItems();
906					transport.append( children );
907
908					// Update the height of the placeholder to match the moving item.
909					height = transport.outerHeight();
910					// If there are children, account for distance between top of children and parent.
911					height += ( height > 0 ) ? (ui.placeholder.css('margin-top').slice(0, -2) * 1) : 0;
912					height += ui.helper.outerHeight();
913					helperHeight = height;
914					height -= 2;                                              // Subtract 2 for borders.
915					ui.placeholder.height(height);
916
917					// Update the width of the placeholder to match the moving item.
918					maxChildDepth = originalDepth;
919					children.each(function(){
920						var depth = $(this).menuItemDepth();
921						maxChildDepth = (depth > maxChildDepth) ? depth : maxChildDepth;
922					});
923					width = ui.helper.find('.menu-item-handle').outerWidth(); // Get original width.
924					width += api.depthToPx(maxChildDepth - originalDepth);    // Account for children.
925					width -= 2;                                               // Subtract 2 for borders.
926					ui.placeholder.width(width);
927
928					// Update the list of menu items.
929					tempHolder = ui.placeholder.next( '.menu-item' );
930					tempHolder.css( 'margin-top', helperHeight + 'px' ); // Set the margin to absorb the placeholder.
931					ui.placeholder.detach();         // Detach or jQuery UI will think the placeholder is a menu item.
932					$(this).sortable( 'refresh' );   // The children aren't sortable. We should let jQuery UI know.
933					ui.item.after( ui.placeholder ); // Reattach the placeholder.
934					tempHolder.css('margin-top', 0); // Reset the margin.
935
936					// Now that the element is complete, we can update...
937					updateSharedVars(ui);
938				},
939				stop: function(e, ui) {
940					var children, subMenuTitle,
941						depthChange = currentDepth - originalDepth;
942
943					// Return child elements to the list.
944					children = transport.children().insertAfter(ui.item);
945
946					// Add "sub menu" description.
947					subMenuTitle = ui.item.find( '.item-title .is-submenu' );
948					if ( 0 < currentDepth )
949						subMenuTitle.show();
950					else
951						subMenuTitle.hide();
952
953					// Update depth classes.
954					if ( 0 !== depthChange ) {
955						ui.item.updateDepthClass( currentDepth );
956						children.shiftDepthClass( depthChange );
957						updateMenuMaxDepth( depthChange );
958					}
959					// Register a change.
960					api.registerChange();
961					// Update the item data.
962					ui.item.updateParentMenuItemDBId();
963
964					// Address sortable's incorrectly-calculated top in Opera.
965					ui.item[0].style.top = 0;
966
967					// Handle drop placement for rtl orientation.
968					if ( api.isRTL ) {
969						ui.item[0].style.left = 'auto';
970						ui.item[0].style.right = 0;
971					}
972
973					api.refreshKeyboardAccessibility();
974					api.refreshAdvancedAccessibility();
975					ui.item.updateParentDropdown();
976					ui.item.updateOrderDropdown();
977					api.refreshAdvancedAccessibilityOfItem( ui.item.find( 'a.item-edit' ) );
978				},
979				change: function(e, ui) {
980					// Make sure the placeholder is inside the menu.
981					// Otherwise fix it, or we're in trouble.
982					if( ! ui.placeholder.parent().hasClass('menu') )
983						(prev.length) ? prev.after( ui.placeholder ) : api.menuList.prepend( ui.placeholder );
984
985					updateSharedVars(ui);
986				},
987				sort: function(e, ui) {
988					var offset = ui.helper.offset(),
989						edge = api.isRTL ? offset.left + ui.helper.width() : offset.left,
990						depth = api.negateIfRTL * api.pxToDepth( edge - menuEdge );
991
992					/*
993					 * Check and correct if depth is not within range.
994					 * Also, if the dragged element is dragged upwards over an item,
995					 * shift the placeholder to a child position.
996					 */
997					if ( depth > maxDepth || offset.top < ( prevBottom - api.options.targetTolerance ) ) {
998						depth = maxDepth;
999					} else if ( depth < minDepth ) {
1000						depth = minDepth;
1001					}
1002
1003					if( depth != currentDepth )
1004						updateCurrentDepth(ui, depth);
1005
1006					// If we overlap the next element, manually shift downwards.
1007					if( nextThreshold && offset.top + helperHeight > nextThreshold ) {
1008						next.after( ui.placeholder );
1009						updateSharedVars( ui );
1010						$( this ).sortable( 'refreshPositions' );
1011					}
1012				}
1013			});
1014
1015			function updateSharedVars(ui) {
1016				var depth;
1017
1018				prev = ui.placeholder.prev( '.menu-item' );
1019				next = ui.placeholder.next( '.menu-item' );
1020
1021				// Make sure we don't select the moving item.
1022				if( prev[0] == ui.item[0] ) prev = prev.prev( '.menu-item' );
1023				if( next[0] == ui.item[0] ) next = next.next( '.menu-item' );
1024
1025				prevBottom = (prev.length) ? prev.offset().top + prev.height() : 0;
1026				nextThreshold = (next.length) ? next.offset().top + next.height() / 3 : 0;
1027				minDepth = (next.length) ? next.menuItemDepth() : 0;
1028
1029				if( prev.length )
1030					maxDepth = ( (depth = prev.menuItemDepth() + 1) > api.options.globalMaxDepth ) ? api.options.globalMaxDepth : depth;
1031				else
1032					maxDepth = 0;
1033			}
1034
1035			function updateCurrentDepth(ui, depth) {
1036				ui.placeholder.updateDepthClass( depth, currentDepth );
1037				currentDepth = depth;
1038			}
1039
1040			function initialMenuMaxDepth() {
1041				if( ! body[0].className ) return 0;
1042				var match = body[0].className.match(/menu-max-depth-(\d+)/);
1043				return match && match[1] ? parseInt( match[1], 10 ) : 0;
1044			}
1045
1046			function updateMenuMaxDepth( depthChange ) {
1047				var depth, newDepth = menuMaxDepth;
1048				if ( depthChange === 0 ) {
1049					return;
1050				} else if ( depthChange > 0 ) {
1051					depth = maxChildDepth + depthChange;
1052					if( depth > menuMaxDepth )
1053						newDepth = depth;
1054				} else if ( depthChange < 0 && maxChildDepth == menuMaxDepth ) {
1055					while( ! $('.menu-item-depth-' + newDepth, api.menuList).length && newDepth > 0 )
1056						newDepth--;
1057				}
1058				// Update the depth class.
1059				body.removeClass( 'menu-max-depth-' + menuMaxDepth ).addClass( 'menu-max-depth-' + newDepth );
1060				menuMaxDepth = newDepth;
1061			}
1062		},
1063
1064		initManageLocations : function () {
1065			$('#menu-locations-wrap form').on( 'submit', function(){
1066				window.onbeforeunload = null;
1067			});
1068			$('.menu-location-menus select').on('change', function () {
1069				var editLink = $(this).closest('tr').find('.locations-edit-menu-link');
1070				if ($(this).find('option:selected').data('orig'))
1071					editLink.show();
1072				else
1073					editLink.hide();
1074			});
1075		},
1076
1077		attachMenuEditListeners : function() {
1078			var that = this;
1079			$('#update-nav-menu').on('click', function(e) {
1080				if ( e.target && e.target.className ) {
1081					if ( -1 != e.target.className.indexOf('item-edit') ) {
1082						return that.eventOnClickEditLink(e.target);
1083					} else if ( -1 != e.target.className.indexOf('menu-save') ) {
1084						return that.eventOnClickMenuSave(e.target);
1085					} else if ( -1 != e.target.className.indexOf('menu-delete') ) {
1086						return that.eventOnClickMenuDelete(e.target);
1087					} else if ( -1 != e.target.className.indexOf('item-delete') ) {
1088						return that.eventOnClickMenuItemDelete(e.target);
1089					} else if ( -1 != e.target.className.indexOf('item-cancel') ) {
1090						return that.eventOnClickCancelLink(e.target);
1091					}
1092				}
1093			});
1094
1095			$( '#menu-name' ).on( 'input', _.debounce( function () {
1096				var menuName = $( document.getElementById( 'menu-name' ) ),
1097					menuNameVal = menuName.val();
1098
1099				if ( ! menuNameVal || ! menuNameVal.replace( /\s+/, '' ) ) {
1100					// Add warning for invalid menu name.
1101					menuName.parent().addClass( 'form-invalid' );
1102				} else {
1103					// Remove warning for valid menu name.
1104					menuName.parent().removeClass( 'form-invalid' );
1105				}
1106			}, 500 ) );
1107
1108			$('#add-custom-links input[type="text"]').on( 'keypress', function(e){
1109				$( '#customlinkdiv' ).removeClass( 'form-invalid' );
1110				$( '#custom-menu-item-url' ).removeAttr( 'aria-invalid' ).removeAttr( 'aria-describedby' );
1111				$( '#custom-url-error' ).hide();
1112
1113				if ( e.keyCode === 13 ) {
1114					e.preventDefault();
1115					$( '#submit-customlinkdiv' ).trigger( 'click' );
1116				}
1117			});
1118
1119			$( '#submit-customlinkdiv' ).on( 'click', function (e) {
1120				var urlInput = $( '#custom-menu-item-url' ),
1121					url = urlInput.val().trim(),
1122					errorMessage = $( '#custom-url-error' ),
1123					urlWrap = $( '#menu-item-url-wrap' ),
1124					urlRegex;
1125
1126				// Hide the error message initially
1127				errorMessage.hide();
1128				urlWrap.removeClass( 'has-error' );
1129
1130				/*
1131				 * Allow URLs including:
1132				 * - http://example.com/
1133				 * - //example.com
1134				 * - /directory/
1135				 * - ?query-param
1136				 * - #target
1137				 * - mailto:foo@example.com
1138				 *
1139				 * Any further validation will be handled on the server when the setting is attempted to be saved,
1140				 * so this pattern does not need to be complete.
1141				 */
1142				urlRegex = /^((\w+:)?\/\/\w.*|\w+:(?!\/\/$)|\/|\?|#)/;
1143				if ( ! urlRegex.test( url ) ) {
1144					e.preventDefault();
1145					urlInput.addClass( 'form-invalid' )
1146						.attr( 'aria-invalid', 'true' )
1147						.attr( 'aria-describedby', 'custom-url-error' );
1148
1149					errorMessage.show();
1150					var errorText = errorMessage.text();
1151					urlWrap.addClass( 'has-error' );
1152					// Announce error message via screen reader
1153					wp.a11y.speak( errorText, 'assertive' );
1154				}
1155			});
1156		},
1157
1158		/**
1159		 * Handle toggling bulk selection checkboxes for menu items.
1160		 *
1161		 * @since 5.8.0
1162		 */ 
1163		attachBulkSelectButtonListeners : function() {
1164			var that = this;
1165
1166			$( '.bulk-select-switcher' ).on( 'change', function() {
1167				if ( this.checked ) {
1168					$( '.bulk-select-switcher' ).prop( 'checked', true );
1169					that.enableBulkSelection();
1170				} else {
1171					$( '.bulk-select-switcher' ).prop( 'checked', false );
1172					that.disableBulkSelection();
1173				}
1174			});
1175		},
1176
1177		/**
1178		 * Enable bulk selection checkboxes for menu items.
1179		 *
1180		 * @since 5.8.0
1181		 */ 
1182		enableBulkSelection : function() {
1183			var checkbox = $( '#menu-to-edit .menu-item-checkbox' );
1184
1185			$( '#menu-to-edit' ).addClass( 'bulk-selection' );
1186			$( '#nav-menu-bulk-actions-top' ).addClass( 'bulk-selection' );
1187			$( '#nav-menu-bulk-actions-bottom' ).addClass( 'bulk-selection' );
1188
1189			$.each( checkbox, function() {
1190				$(this).prop( 'disabled', false );
1191			});
1192		},
1193
1194		/**
1195		 * Disable bulk selection checkboxes for menu items.
1196		 *
1197		 * @since 5.8.0
1198		 */ 
1199		disableBulkSelection : function() {
1200			var checkbox = $( '#menu-to-edit .menu-item-checkbox' );
1201
1202			$( '#menu-to-edit' ).removeClass( 'bulk-selection' );
1203			$( '#nav-menu-bulk-actions-top' ).removeClass( 'bulk-selection' );
1204			$( '#nav-menu-bulk-actions-bottom' ).removeClass( 'bulk-selection' );
1205
1206			if ( $( '.menu-items-delete' ).is( '[aria-describedby="pending-menu-items-to-delete"]' ) ) {
1207				$( '.menu-items-delete' ).removeAttr( 'aria-describedby' );
1208			}
1209
1210			$.each( checkbox, function() {
1211				$(this).prop( 'disabled', true ).prop( 'checked', false );
1212			});
1213
1214			$( '.menu-items-delete' ).addClass( 'disabled' );
1215			$( '#pending-menu-items-to-delete ul' ).empty();
1216		},
1217
1218		/**
1219		 * Listen for state changes on bulk action checkboxes.
1220		 *
1221		 * @since 5.8.0
1222		 */ 
1223		attachMenuCheckBoxListeners : function() {
1224			var that = this;
1225
1226			$( '#menu-to-edit' ).on( 'change', '.menu-item-checkbox', function() {
1227				that.setRemoveSelectedButtonStatus();
1228			});
1229		},
1230
1231		/**
1232		 * Create delete button to remove menu items from collection.
1233		 *
1234		 * @since 5.8.0
1235		 */ 
1236		attachMenuItemDeleteButton : function() {
1237			var that = this;
1238
1239			$( document ).on( 'click', '.menu-items-delete', function( e ) {
1240				var itemsPendingDeletion, itemsPendingDeletionList, deletionSpeech;
1241
1242				e.preventDefault();
1243
1244				if ( ! $(this).hasClass( 'disabled' ) ) {
1245					$.each( $( '.menu-item-checkbox:checked' ), function( index, element ) {
1246						$( element ).parents( 'li' ).find( 'a.item-delete' ).trigger( 'click' );
1247					});
1248
1249					$( '.menu-items-delete' ).addClass( 'disabled' );
1250					$( '.bulk-select-switcher' ).prop( 'checked', false );
1251
1252					itemsPendingDeletion     = '';
1253					itemsPendingDeletionList = $( '#pending-menu-items-to-delete ul li' );
1254
1255					$.each( itemsPendingDeletionList, function( index, element ) {
1256						var itemName = $( element ).find( '.pending-menu-item-name' ).text();
1257						var itemSpeech = menus.menuItemDeletion.replace( '%s', itemName );
1258
1259						itemsPendingDeletion += itemSpeech;
1260						if ( ( index + 1 ) < itemsPendingDeletionList.length ) {
1261							itemsPendingDeletion += ', ';
1262						}
1263					});
1264
1265					deletionSpeech = menus.itemsDeleted.replace( '%s', itemsPendingDeletion );
1266					wp.a11y.speak( deletionSpeech, 'polite' );
1267					that.disableBulkSelection();
1268					$( '#menu-to-edit' ).updateParentDropdown();
1269					$( '#menu-to-edit' ).updateOrderDropdown();
1270				}
1271			});
1272		},
1273
1274		/**
1275		 * List menu items awaiting deletion.
1276		 *
1277		 * @since 5.8.0
1278		 */ 
1279		attachPendingMenuItemsListForDeletion : function() {
1280			$( '#post-body-content' ).on( 'change', '.menu-item-checkbox', function() {
1281				var menuItemName, menuItemType, menuItemID, listedMenuItem;
1282
1283				if ( ! $( '.menu-items-delete' ).is( '[aria-describedby="pending-menu-items-to-delete"]' ) ) {
1284					$( '.menu-items-delete' ).attr( 'aria-describedby', 'pending-menu-items-to-delete' );
1285				}
1286
1287				menuItemName = $(this).next().text();
1288				menuItemType = $(this).parent().next( '.item-controls' ).find( '.item-type' ).text();
1289				menuItemID   = $(this).attr( 'data-menu-item-id' );
1290
1291				listedMenuItem = $( '#pending-menu-items-to-delete ul' ).find( '[data-menu-item-id=' + menuItemID + ']' );
1292				if ( listedMenuItem.length > 0 ) {
1293					listedMenuItem.remove();
1294				}
1295
1296				if ( this.checked === true ) {
1297					const $li = $( '<li>', { 'data-menu-item-id': menuItemID } );
1298					$li.append( $( '<span>', {
1299						'class': 'pending-menu-item-name',
1300						text: menuItemName
1301					} ) );
1302					$li.append( ' ' );
1303					$li.append( $( '<span>', {
1304						'class': 'pending-menu-item-type',
1305						text: '(' + menuItemType + ')',
1306					} ) );
1307					$li.append( $( '<span>', { 'class': 'separator' } ) );
1308					$( '#pending-menu-items-to-delete ul' ).append( $li );
1309				}
1310
1311				$( '#pending-menu-items-to-delete li .separator' ).html( ', ' );
1312				$( '#pending-menu-items-to-delete li .separator' ).last().html( '.' );
1313			});
1314		},
1315
1316		/**
1317		 * Set status of bulk delete checkbox.
1318		 *
1319		 * @since 5.8.0
1320		 */ 
1321		setBulkDeleteCheckboxStatus : function() {
1322			var that = this;
1323			var checkbox = $( '#menu-to-edit .menu-item-checkbox' );
1324
1325			$.each( checkbox, function() {
1326				if ( $(this).prop( 'disabled' ) ) {
1327					$(this).prop( 'disabled', false );
1328				} else {
1329					$(this).prop( 'disabled', true );
1330				}
1331
1332				if ( $(this).is( ':checked' ) ) {
1333					$(this).prop( 'checked', false );
1334				}
1335			});
1336
1337			that.setRemoveSelectedButtonStatus();
1338		},
1339
1340		/**
1341		 * Set status of menu items removal button.
1342		 *
1343		 * @since 5.8.0
1344		 */ 
1345		setRemoveSelectedButtonStatus : function() {
1346			var button = $( '.menu-items-delete' );
1347
1348			if ( $( '.menu-item-checkbox:checked' ).length > 0 ) {
1349				button.removeClass( 'disabled' );
1350			} else {
1351				button.addClass( 'disabled' );
1352			}
1353		},
1354
1355		attachMenuSaveSubmitListeners : function() {
1356			/*
1357			 * When a navigation menu is saved, store a JSON representation of all form data
1358			 * in a single input to avoid PHP `max_input_vars` limitations. See #14134.
1359			 */
1360			$( '#update-nav-menu' ).on( 'submit', function() {
1361				var navMenuData = $( '#update-nav-menu' ).serializeArray();
1362				$( '[name="nav-menu-data"]' ).val( JSON.stringify( navMenuData ) );
1363			});
1364		},
1365
1366		attachThemeLocationsListeners : function() {
1367			var loc = $('#nav-menu-theme-locations'), params = {};
1368			params.action = 'menu-locations-save';
1369			params['menu-settings-column-nonce'] = $('#menu-settings-column-nonce').val();
1370			loc.find('input[type="submit"]').on( 'click', function() {
1371				loc.find('select').each(function() {
1372					params[this.name] = $(this).val();
1373				});
1374				loc.find( '.spinner' ).addClass( 'is-active' );
1375				$.post( ajaxurl, params, function() {
1376					loc.find( '.spinner' ).removeClass( 'is-active' );
1377				});
1378				return false;
1379			});
1380		},
1381
1382		attachQuickSearchListeners : function() {
1383			var searchTimer;
1384
1385			// Prevent form submission.
1386			$( '#nav-menu-meta' ).on( 'submit', function( event ) {
1387				event.preventDefault();
1388			});
1389
1390			$( '#nav-menu-meta' ).on( 'input', '.quick-search', function() {
1391				var $this = $( this );
1392
1393				$this.attr( 'autocomplete', 'off' );
1394
1395				if ( searchTimer ) {
1396					clearTimeout( searchTimer );
1397				}
1398
1399				searchTimer = setTimeout( function() {
1400					api.updateQuickSearchResults( $this );
1401				}, 500 );
1402			}).on( 'blur', '.quick-search', function() {
1403				api.lastSearch = '';
1404			});
1405		},
1406
1407		updateQuickSearchResults : function(input) {
1408			var panel, params,
1409				minSearchLength = 1,
1410				q = input.val(),
1411				pageSearchChecklist = $( '#page-search-checklist' );
1412
1413			/*
1414			 * Avoid a new Ajax search when the pressed key (e.g. arrows)
1415			 * doesn't change the searched term.
1416			 */
1417			if ( api.lastSearch == q ) {
1418				return;
1419			}
1420
1421			/*
1422			 * Reset results when search is less than or equal to 
1423			 * minimum characters for searched term.
1424			 */
1425			if ( q.length <= minSearchLength ) {
1426				pageSearchChecklist.empty();
1427				wp.a11y.speak( wp.i18n.__( 'Search results cleared' ) );
1428				return;
1429			}
1430
1431			api.lastSearch = q;
1432
1433			panel = input.parents('.tabs-panel');
1434			params = {
1435				'action': 'menu-quick-search',
1436				'response-format': 'markup',
1437				'menu': $('#menu').val(),
1438				'menu-settings-column-nonce': $('#menu-settings-column-nonce').val(),
1439				'q': q,
1440				'type': input.attr('name')
1441			};
1442
1443			$( '.spinner', panel ).addClass( 'is-active' );
1444
1445			$.post( ajaxurl, params, function(menuMarkup) {
1446				api.processQuickSearchQueryResponse(menuMarkup, params, panel);
1447			});
1448		},
1449
1450		addCustomLink : function( processMethod ) {
1451			var url = $('#custom-menu-item-url').val().toString(),
1452				label = $('#custom-menu-item-name').val(),
1453				urlRegex;
1454
1455			if ( '' !== url ) {
1456				url = url.trim();
1457			}
1458
1459			processMethod = processMethod || api.addMenuItemToBottom;
1460
1461			/*
1462			 * Allow URLs including:
1463			 * - http://example.com/
1464			 * - //example.com
1465			 * - /directory/
1466			 * - ?query-param
1467			 * - #target
1468			 * - mailto:foo@example.com
1469			 *
1470			 * Any further validation will be handled on the server when the setting is attempted to be saved,
1471			 * so this pattern does not need to be complete.
1472			 */
1473			urlRegex = /^((\w+:)?\/\/\w.*|\w+:(?!\/\/$)|\/|\?|#)/;
1474			if ( ! urlRegex.test( url ) ) {
1475				$('#customlinkdiv').addClass('form-invalid');
1476				return false;
1477			}
1478
1479			// Show the Ajax spinner.
1480			$( '.customlinkdiv .spinner' ).addClass( 'is-active' );
1481			this.addLinkToMenu( url, label, processMethod, function() {
1482				// Remove the Ajax spinner.
1483				$( '.customlinkdiv .spinner' ).removeClass( 'is-active' );
1484				// Set custom link form back to defaults.
1485				$('#custom-menu-item-name').val('').trigger( 'blur' );
1486				$( '#custom-menu-item-url' ).val( '' ).attr( 'placeholder', 'https://' );
1487			});
1488		},
1489
1490		addLinkToMenu : function(url, label, processMethod, callback) {
1491			processMethod = processMethod || api.addMenuItemToBottom;
1492			callback = callback || function(){};
1493
1494			api.addItemToMenu({
1495				'-1': {
1496					'menu-item-type': 'custom',
1497					'menu-item-url': url,
1498					'menu-item-title': label
1499				}
1500			}, processMethod, callback);
1501		},
1502
1503		addItemToMenu : function(menuItem, processMethod, callback) {
1504			var menu = $('#menu').val(),
1505				nonce = $('#menu-settings-column-nonce').val(),
1506				params;
1507
1508			processMethod = processMethod || function(){};
1509			callback = callback || function(){};
1510
1511			params = {
1512				'action': 'add-menu-item',
1513				'menu': menu,
1514				'menu-settings-column-nonce': nonce,
1515				'menu-item': menuItem
1516			};
1517
1518			$.post( ajaxurl, params, function(menuMarkup) {
1519				var ins = $('#menu-instructions');
1520
1521				menuMarkup = menuMarkup || '';
1522				menuMarkup = menuMarkup.toString().trim(); // Trim leading whitespaces.
1523				processMethod(menuMarkup, params);
1524
1525				// Make it stand out a bit more visually, by adding a fadeIn.
1526				$( 'li.pending' ).hide().fadeIn('slow');
1527				$( '.drag-instructions' ).show();
1528				if( ! ins.hasClass( 'menu-instructions-inactive' ) && ins.siblings().length )
1529					ins.addClass( 'menu-instructions-inactive' );
1530
1531				callback();
1532			});
1533		},
1534
1535		/**
1536		 * Process the add menu item request response into menu list item. Appends to menu.
1537		 *
1538		 * @param {string} menuMarkup The text server response of menu item markup.
1539		 *
1540		 * @fires document#menu-item-added Passes menuMarkup as a jQuery object.
1541		 */
1542		addMenuItemToBottom : function( menuMarkup ) {
1543			var $menuMarkup = $( menuMarkup );
1544			$menuMarkup.hideAdvancedMenuItemFields().appendTo( api.targetList );
1545			api.refreshKeyboardAccessibility();
1546			api.refreshAdvancedAccessibility();
1547			wp.a11y.speak( menus.itemAdded );
1548			$( document ).trigger( 'menu-item-added', [ $menuMarkup ] );
1549		},
1550
1551		/**
1552		 * Process the add menu item request response into menu list item. Prepends to menu.
1553		 *
1554		 * @param {string} menuMarkup The text server response of menu item markup.
1555		 *
1556		 * @fires document#menu-item-added Passes menuMarkup as a jQuery object.
1557		 */
1558		addMenuItemToTop : function( menuMarkup ) {
1559			var $menuMarkup = $( menuMarkup );
1560			$menuMarkup.hideAdvancedMenuItemFields().prependTo( api.targetList );
1561			api.refreshKeyboardAccessibility();
1562			api.refreshAdvancedAccessibility();
1563			wp.a11y.speak( menus.itemAdded );
1564			$( document ).trigger( 'menu-item-added', [ $menuMarkup ] );
1565		},
1566
1567		attachUnsavedChangesListener : function() {
1568			$('#menu-management input, #menu-management select, #menu-management, #menu-management textarea, .menu-location-menus select').on( 'change', function(){
1569				api.registerChange();
1570			});
1571
1572			if ( 0 !== $('#menu-to-edit').length || 0 !== $('.menu-location-menus select').length ) {
1573				window.onbeforeunload = function(){
1574					if ( api.menusChanged )
1575						return wp.i18n.__( 'The changes you made will be lost if you navigate away from this page.' );
1576				};
1577			} else {
1578				// Make the post boxes read-only, as they can't be used yet.
1579				$( '#menu-settings-column' ).find( 'input,select' ).end().find( 'a' ).attr( 'href', '#' ).off( 'click' );
1580			}
1581		},
1582
1583		registerChange : function() {
1584			api.menusChanged = true;
1585		},
1586
1587		attachTabsPanelListeners : function() {
1588			$('#menu-settings-column').on('click', function(e) {
1589				var selectAreaMatch, selectAll, panelId, wrapper, items,
1590					target = $(e.target);
1591
1592				if ( target.hasClass('nav-tab-link') ) {
1593
1594					panelId = target.data( 'type' );
1595
1596					wrapper = target.parents('.accordion-section-content').first();
1597
1598					// Upon changing tabs, we want to uncheck all checkboxes.
1599					$( 'input', wrapper ).prop( 'checked', false );
1600
1601					$('.tabs-panel-active', wrapper).removeClass('tabs-panel-active').addClass('tabs-panel-inactive');
1602					$('#' + panelId, wrapper).removeClass('tabs-panel-inactive').addClass('tabs-panel-active');
1603
1604					$('.tabs', wrapper).removeClass('tabs');
1605					target.parent().addClass('tabs');
1606
1607					// Select the search bar.
1608					$('.quick-search', wrapper).trigger( 'focus' );
1609
1610					// Hide controls in the search tab if no items found.
1611					if ( ! wrapper.find( '.tabs-panel-active .menu-item-title' ).length ) {
1612						wrapper.addClass( 'has-no-menu-item' );
1613					} else {
1614						wrapper.removeClass( 'has-no-menu-item' );
1615					}
1616
1617					e.preventDefault();
1618				} else if ( target.hasClass( 'select-all' ) ) {
1619					selectAreaMatch = target.closest( '.button-controls' ).data( 'items-type' );
1620					if ( selectAreaMatch ) {
1621						items = $( '#' + selectAreaMatch + ' .tabs-panel-active .menu-item-title input' );
1622
1623						if ( items.length === items.filter( ':checked' ).length && ! target.is( ':checked' ) ) {
1624							items.prop( 'checked', false );
1625						} else if ( target.is( ':checked' ) ) {
1626							items.prop( 'checked', true );
1627						}
1628					}
1629				} else if ( target.hasClass( 'menu-item-checkbox' ) ) {
1630					selectAreaMatch = target.closest( '.tabs-panel-active' ).parent().attr( 'id' );
1631					if ( selectAreaMatch ) {
1632						items     = $( '#' + selectAreaMatch + ' .tabs-panel-active .menu-item-title input' );
1633						selectAll = $( '.button-controls[data-items-type="' + selectAreaMatch + '"] .select-all' );
1634
1635						if ( items.length === items.filter( ':checked' ).length && ! selectAll.is( ':checked' ) ) {
1636							selectAll.prop( 'checked', true );
1637						} else if ( selectAll.is( ':checked' ) ) {
1638							selectAll.prop( 'checked', false );
1639						}
1640					}
1641				} else if ( target.hasClass('submit-add-to-menu') ) {
1642					api.registerChange();
1643
1644					if ( e.target.id && 'submit-customlinkdiv' == e.target.id )
1645						api.addCustomLink( api.addMenuItemToBottom );
1646					else if ( e.target.id && -1 != e.target.id.indexOf('submit-') )
1647						$('#' + e.target.id.replace(/submit-/, '')).addSelectedToMenu( api.addMenuItemToBottom );
1648					return false;
1649				}
1650			});
1651
1652			/*
1653			 * Delegate the `click` event and attach it just to the pagination
1654			 * links thus excluding the current page `<span>`. See ticket #35577.
1655			 */
1656			$( '#nav-menu-meta' ).on( 'click', 'a.page-numbers', function() {
1657				var $container = $( this ).closest( '.inside' );
1658
1659				$.post( ajaxurl, this.href.replace( /.*\?/, '' ).replace( /action=([^&]*)/, '' ) + '&action=menu-get-metabox',
1660					function( resp ) {
1661						var metaBoxData = JSON.parse( resp ),
1662							toReplace;
1663
1664						if ( -1 === resp.indexOf( 'replace-id' ) ) {
1665							return;
1666						}
1667
1668						// Get the post type menu meta box to update.
1669						toReplace = document.getElementById( metaBoxData['replace-id'] );
1670
1671						if ( ! metaBoxData.markup || ! toReplace ) {
1672							return;
1673						}
1674
1675						// Update the post type menu meta box with new content from the response.
1676						$container.html( metaBoxData.markup );
1677					}
1678				);
1679
1680				return false;
1681			});
1682		},
1683
1684		eventOnClickEditLink : function(clickedEl) {
1685			var settings, item,
1686			matchedSection = /#(.*)$/.exec(clickedEl.href);
1687
1688			if ( matchedSection && matchedSection[1] ) {
1689				settings = $('#'+matchedSection[1]);
1690				item = settings.parent();
1691				if( 0 !== item.length ) {
1692					if( item.hasClass('menu-item-edit-inactive') ) {
1693						if( ! settings.data('menu-item-data') ) {
1694							settings.data( 'menu-item-data', settings.getItemData() );
1695						}
1696						settings.slideDown('fast');
1697						item.removeClass('menu-item-edit-inactive')
1698							.addClass('menu-item-edit-active');
1699					} else {
1700						settings.slideUp('fast');
1701						item.removeClass('menu-item-edit-active')
1702							.addClass('menu-item-edit-inactive');
1703					}
1704					return false;
1705				}
1706			}
1707		},
1708
1709		eventOnClickCancelLink : function(clickedEl) {
1710			var settings = $( clickedEl ).closest( '.menu-item-settings' ),
1711				thisMenuItem = $( clickedEl ).closest( '.menu-item' );
1712
1713			thisMenuItem.removeClass( 'menu-item-edit-active' ).addClass( 'menu-item-edit-inactive' );
1714			settings.setItemData( settings.data( 'menu-item-data' ) ).hide();
1715			// Restore the title of the currently active/expanded menu item.
1716			thisMenuItem.find( '.menu-item-title' ).text( settings.data( 'menu-item-data' )['menu-item-title'] );
1717
1718			return false;
1719		},
1720
1721		eventOnClickMenuSave : function() {
1722			var menuName = $('#menu-name'),
1723				menuNameVal = menuName.val();
1724
1725			// Cancel and warn if invalid menu name.
1726			if ( ! menuNameVal || ! menuNameVal.replace( /\s+/, '' ) ) {
1727				menuName.parent().addClass( 'form-invalid' );
1728				return false;
1729			}
1730			// Copy menu theme locations.
1731			// Note: This appears to be dead code since #nav-menu-theme-locations no longer exists, perhaps removed in r32842.
1732			var $updateNavMenu = $('#update-nav-menu');
1733			$('#nav-menu-theme-locations select').each(function() {
1734				$updateNavMenu.append(
1735					$( '<input>', {
1736						type: 'hidden',
1737						name: this.name,
1738						value: $( this ).val(),
1739					} )
1740				);
1741			});
1742			// Update menu item position data.
1743			api.menuList.find('.menu-item-data-position').val( function(index) { return index + 1; } );
1744			window.onbeforeunload = null;
1745
1746			return true;
1747		},
1748
1749		eventOnClickMenuDelete : function() {
1750			// Delete warning AYS.
1751			if ( window.confirm( wp.i18n.__( 'You are about to permanently delete this menu.\n\'Cancel\' to stop, \'OK\' to delete.' ) ) ) {
1752				window.onbeforeunload = null;
1753				return true;
1754			}
1755			return false;
1756		},
1757
1758		eventOnClickMenuItemDelete : function(clickedEl) {
1759			var itemID = parseInt(clickedEl.id.replace('delete-', ''), 10);
1760
1761			api.removeMenuItem( $('#menu-item-' + itemID) );
1762			api.registerChange();
1763			return false;
1764		},
1765
1766		/**
1767		 * Process the quick search response into a search result
1768		 *
1769		 * @param string resp The server response to the query.
1770		 * @param object req The request arguments.
1771		 * @param jQuery panel The tabs panel we're searching in.
1772		 */
1773		processQuickSearchQueryResponse : function(resp, req, panel) {
1774			var matched, newID,
1775			takenIDs = {},
1776			form = document.getElementById('nav-menu-meta'),
1777			pattern = /menu-item[(\[^]\]*/,
1778			$items = $('<div>').html(resp).find('li'),
1779			wrapper = panel.closest( '.accordion-section-content' ),
1780			selectAll = wrapper.find( '.button-controls .select-all' ),
1781			$item;
1782
1783			if( ! $items.length ) {
1784				let noResults = wp.i18n.__( 'No results found.' );
1785				const li = $( '<li>' );
1786				const p = $( '<p>', { text: noResults } );
1787				li.append( p );
1788				$('.categorychecklist', panel).empty().append( li );
1789				$( '.spinner', panel ).removeClass( 'is-active' );
1790				wrapper.addClass( 'has-no-menu-item' );
1791				wp.a11y.speak( noResults, 'assertive' );
1792				return;
1793			}
1794
1795			$items.each(function(){
1796				$item = $(this);
1797
1798				// Make a unique DB ID number.
1799				matched = pattern.exec($item.html());
1800
1801				if ( matched && matched[1] ) {
1802					newID = matched[1];
1803					while( form.elements['menu-item[' + newID + '][menu-item-type]'] || takenIDs[ newID ] ) {
1804						newID--;
1805					}
1806
1807					takenIDs[newID] = true;
1808					if ( newID != matched[1] ) {
1809						$item.html( $item.html().replace(new RegExp(
1810							'menu-item\\[' + matched[1] + '\\]', 'g'),
1811							'menu-item[' + newID + ']'
1812						) );
1813					}
1814				}
1815			});
1816
1817			$('.categorychecklist', panel).html( $items );
1818			wp.a11y.speak( wp.i18n.sprintf( wp.i18n.__( '%d Search Results Found' ), $items.length ), 'assertive' );
1819			$( '.spinner', panel ).removeClass( 'is-active' );
1820			wrapper.removeClass( 'has-no-menu-item' );
1821
1822			if ( selectAll.is( ':checked' ) ) {
1823				selectAll.prop( 'checked', false );
1824			}
1825		},
1826
1827		/**
1828		 * Remove a menu item.
1829		 *
1830		 * @param {Object} el The element to be removed as a jQuery object.
1831		 *
1832		 * @fires document#menu-removing-item Passes the element to be removed.
1833		 */
1834		removeMenuItem : function(el) {
1835			var children = el.childMenuItems();
1836
1837			$( document ).trigger( 'menu-removing-item', [ el ] );
1838			el.addClass('deleting').animate({
1839					opacity : 0,
1840					height: 0
1841				}, 350, function() {
1842					var ins = $('#menu-instructions');
1843					el.remove();
1844					children.shiftDepthClass( -1 ).updateParentMenuItemDBId();
1845					if ( 0 === $( '#menu-to-edit li' ).length ) {
1846						$( '.drag-instructions' ).hide();
1847						ins.removeClass( 'menu-instructions-inactive' );
1848					}
1849					api.refreshAdvancedAccessibility();
1850					wp.a11y.speak( menus.itemRemoved );
1851					$( '#menu-to-edit' ).updateParentDropdown();
1852					$( '#menu-to-edit' ).updateOrderDropdown();
1853				});
1854		},
1855
1856		depthToPx : function(depth) {
1857			return depth * api.options.menuItemDepthPerLevel;
1858		},
1859
1860		pxToDepth : function(px) {
1861			return Math.floor(px / api.options.menuItemDepthPerLevel);
1862		}
1863
1864	};
1865
1866	$( function() {
1867
1868		wpNavMenu.init();
1869
1870		// Prevent focused element from being hidden by the sticky footer.
1871		$( '.menu-edit a, .menu-edit button, .menu-edit input, .menu-edit textarea, .menu-edit select' ).on('focus', function() {
1872			if ( window.innerWidth >= 783 ) {
1873				var navMenuHeight = $( '#nav-menu-footer' ).height() + 20;
1874				var bottomOffset = $(this).offset().top - ( $(window).scrollTop() + $(window).height() - $(this).height() );
1875
1876				if ( bottomOffset > 0 ) {
1877					bottomOffset = 0;
1878				}
1879				bottomOffset = bottomOffset * -1;
1880
1881				if( bottomOffset < navMenuHeight ) {
1882					var scrollTop = $(document).scrollTop();
1883					$(document).scrollTop( scrollTop + ( navMenuHeight - bottomOffset ) );
1884				}
1885			}
1886		});
1887	});
1888
1889	// Show bulk action.
1890	$( document ).on( 'menu-item-added', function() {
1891		if ( ! $( '.bulk-actions' ).is( ':visible' ) ) {
1892			$( '.bulk-actions' ).show();
1893		}
1894	} );
1895
1896	// Hide bulk action.
1897	$( document ).on( 'menu-removing-item', function( e, el ) {
1898		var menuElement = $( el ).parents( '#menu-to-edit' );
1899		if ( menuElement.find( 'li' ).length === 1 && $( '.bulk-actions' ).is( ':visible' ) ) {
1900			$( '.bulk-actions' ).hide();
1901		}
1902	} );
1903
1904})(jQuery);
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