Current File : /home/bdmcricketindia.in/public_html/wp-admin/js/nav-menu.js
/**
 * WordPress Administration Navigation Menu
 * Interface JS functions
 *
 * @version 2.0.0
 *
 * @package WordPress
 * @subpackage Administration
 * @output wp-admin/js/nav-menu.js
 */

/* global menus, postboxes, columns, isRtl, ajaxurl, wpNavMenu */

(function($) {

	var api;

	/**
	 * Contains all the functions to handle WordPress navigation menus administration.
	 *
	 * @namespace wpNavMenu
	 */
	api = window.wpNavMenu = {

		options : {
			menuItemDepthPerLevel : 30, // Do not use directly. Use depthToPx and pxToDepth instead.
			globalMaxDepth:  11,
			sortableItems:   '> *',
			targetTolerance: 0
		},

		menuList : undefined,	// Set in init.
		targetList : undefined, // Set in init.
		menusChanged : false,
		isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),
		negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,
		lastSearch: '',

		// Functions that run on init.
		init : function() {
			api.menuList = $('#menu-to-edit');
			api.targetList = api.menuList;

			this.jQueryExtensions();

			this.attachMenuEditListeners();

			this.attachBulkSelectButtonListeners();
			this.attachMenuCheckBoxListeners();
			this.attachMenuItemDeleteButton();
			this.attachPendingMenuItemsListForDeletion();

			this.attachQuickSearchListeners();
			this.attachThemeLocationsListeners();
			this.attachMenuSaveSubmitListeners();

			this.attachTabsPanelListeners();

			this.attachUnsavedChangesListener();

			if ( api.menuList.length )
				this.initSortables();

			if ( menus.oneThemeLocationNoMenus )
				$( '#posttype-page' ).addSelectedToMenu( api.addMenuItemToBottom );

			this.initManageLocations();

			this.initAccessibility();

			this.initToggles();

			this.initPreviewing();
		},

		jQueryExtensions : function() {
			// jQuery extensions.
			$.fn.extend({
				menuItemDepth : function() {
					var margin = api.isRTL ? this.eq(0).css('margin-right') : this.eq(0).css('margin-left');
					return api.pxToDepth( margin && -1 != margin.indexOf('px') ? margin.slice(0, -2) : 0 );
				},
				updateDepthClass : function(current, prev) {
					return this.each(function(){
						var t = $(this);
						prev = prev || t.menuItemDepth();
						$(this).removeClass('menu-item-depth-'+ prev )
							.addClass('menu-item-depth-'+ current );
					});
				},
				shiftDepthClass : function(change) {
					return this.each(function(){
						var t = $(this),
							depth = t.menuItemDepth(),
							newDepth = depth + change;

						t.removeClass( 'menu-item-depth-'+ depth )
							.addClass( 'menu-item-depth-'+ ( newDepth ) );

						if ( 0 === newDepth ) {
							t.find( '.is-submenu' ).hide();
						}
					});
				},
				childMenuItems : function() {
					var result = $();
					this.each(function(){
						var t = $(this), depth = t.menuItemDepth(), next = t.next( '.menu-item' );
						while( next.length && next.menuItemDepth() > depth ) {
							result = result.add( next );
							next = next.next( '.menu-item' );
						}
					});
					return result;
				},
				shiftHorizontally : function( dir ) {
					return this.each(function(){
						var t = $(this),
							depth = t.menuItemDepth(),
							newDepth = depth + dir;

						// Change .menu-item-depth-n class.
						t.moveHorizontally( newDepth, depth );
					});
				},
				moveHorizontally : function( newDepth, depth ) {
					return this.each(function(){
						var t = $(this),
							children = t.childMenuItems(),
							diff = newDepth - depth,
							subItemText = t.find('.is-submenu');

						// Change .menu-item-depth-n class.
						t.updateDepthClass( newDepth, depth ).updateParentMenuItemDBId();

						// If it has children, move those too.
						if ( children ) {
							children.each(function() {
								var t = $(this),
									thisDepth = t.menuItemDepth(),
									newDepth = thisDepth + diff;
								t.updateDepthClass(newDepth, thisDepth).updateParentMenuItemDBId();
							});
						}

						// Show "Sub item" helper text.
						if (0 === newDepth)
							subItemText.hide();
						else
							subItemText.show();
					});
				},
				updateParentMenuItemDBId : function() {
					return this.each(function(){
						var item = $(this),
							input = item.find( '.menu-item-data-parent-id' ),
							depth = parseInt( item.menuItemDepth(), 10 ),
							parentDepth = depth - 1,
							parent = item.prevAll( '.menu-item-depth-' + parentDepth ).first();

						if ( 0 === depth ) { // Item is on the top level, has no parent.
							input.val(0);
						} else { // Find the parent item, and retrieve its object id.
							input.val( parent.find( '.menu-item-data-db-id' ).val() );
						}
					});
				},
				hideAdvancedMenuItemFields : function() {
					return this.each(function(){
						var that = $(this);
						$('.hide-column-tog').not(':checked').each(function(){
							that.find('.field-' + $(this).val() ).addClass('hidden-field');
						});
					});
				},
				/**
				 * Adds selected menu items to the menu.
				 *
				 * @ignore
				 *
				 * @param jQuery metabox The metabox jQuery object.
				 */
				addSelectedToMenu : function(processMethod) {
					if ( 0 === $('#menu-to-edit').length ) {
						return false;
					}

					return this.each(function() {
						var t = $(this), menuItems = {},
							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' ),
							re = /menu-item\[([^\]]*)/;

						processMethod = processMethod || api.addMenuItemToBottom;

						// If no items are checked, bail.
						if ( !checkboxes.length )
							return false;

						// Show the Ajax spinner.
						t.find( '.button-controls .spinner' ).addClass( 'is-active' );

						// Retrieve menu item data.
						$(checkboxes).each(function(){
							var t = $(this),
								listItemDBIDMatch = re.exec( t.attr('name') ),
								listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);

							if ( this.className && -1 != this.className.indexOf('add-to-top') )
								processMethod = api.addMenuItemToTop;
							menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );
						});

						// Add the items.
						api.addItemToMenu(menuItems, processMethod, function(){
							// Deselect the items and hide the Ajax spinner.
							checkboxes.prop( 'checked', false );
							t.find( '.button-controls .select-all' ).prop( 'checked', false );
							t.find( '.button-controls .spinner' ).removeClass( 'is-active' );
							t.updateParentDropdown();
							t.updateOrderDropdown();
						});
					});
				},
				getItemData : function( itemType, id ) {
					itemType = itemType || 'menu-item';

					var itemData = {}, i,
					fields = [
						'menu-item-db-id',
						'menu-item-object-id',
						'menu-item-object',
						'menu-item-parent-id',
						'menu-item-position',
						'menu-item-type',
						'menu-item-title',
						'menu-item-url',
						'menu-item-description',
						'menu-item-attr-title',
						'menu-item-target',
						'menu-item-classes',
						'menu-item-xfn'
					];

					if( !id && itemType == 'menu-item' ) {
						id = this.find('.menu-item-data-db-id').val();
					}

					if( !id ) return itemData;

					this.find('input').each(function() {
						var field;
						i = fields.length;
						while ( i-- ) {
							if( itemType == 'menu-item' )
								field = fields[i] + '[' + id + ']';
							else if( itemType == 'add-menu-item' )
								field = 'menu-item[' + id + '][' + fields[i] + ']';

							if (
								this.name &&
								field == this.name
							) {
								itemData[fields[i]] = this.value;
							}
						}
					});

					return itemData;
				},
				setItemData : function( itemData, itemType, id ) { // Can take a type, such as 'menu-item', or an id.
					itemType = itemType || 'menu-item';

					if( !id && itemType == 'menu-item' ) {
						id = $('.menu-item-data-db-id', this).val();
					}

					if( !id ) return this;

					this.find('input').each(function() {
						var t = $(this), field;
						$.each( itemData, function( attr, val ) {
							if( itemType == 'menu-item' )
								field = attr + '[' + id + ']';
							else if( itemType == 'add-menu-item' )
								field = 'menu-item[' + id + '][' + attr + ']';

							if ( field == t.attr('name') ) {
								t.val( val );
							}
						});
					});
					return this;
				},
				updateParentDropdown : function() {
					return this.each(function(){
						var menuItems = $( '#menu-to-edit li' ),
							parentDropdowns = $( '.edit-menu-item-parent' );

						$.each( parentDropdowns, function() {
							var parentDropdown = $( this ),
								$html = '',
								$selected = '',
								currentItemID = parentDropdown.closest( 'li.menu-item' ).find( '.menu-item-data-db-id' ).val(),
								currentparentID = parentDropdown.closest( 'li.menu-item' ).find( '.menu-item-data-parent-id' ).val(),
								currentItem = parentDropdown.closest( 'li.menu-item' ),
								currentMenuItemChild = currentItem.childMenuItems(),
								excludeMenuItem = [ currentItemID ];

							if ( currentMenuItemChild.length > 0 ) {
								$.each( currentMenuItemChild, function(){
									var childItem = $(this),
										childID = childItem.find( '.menu-item-data-db-id' ).val();

									excludeMenuItem.push( childID );
								});
							}

							if ( currentparentID == 0 ) {
								$selected = 'selected';
							}

							$html += '<option ' + $selected + ' value="0">' + wp.i18n._x( 'No Parent', 'menu item without a parent in navigation menu' ) + '</option>';

							$.each( menuItems, function() {
								var menuItem = $(this),
								$selected = '',
								menuID = menuItem.find( '.menu-item-data-db-id' ).val(),
								menuTitle = menuItem.find( '.edit-menu-item-title' ).val();

								if ( ! excludeMenuItem.includes( menuID ) ) {
									if ( currentparentID == menuID ) {
										$selected = 'selected';
									}
									$html += '<option ' + $selected + ' value="' + menuID + '">' + menuTitle + '</option>';
								}
							});

							parentDropdown.html( $html );
						});
						
					});
				},
				updateOrderDropdown : function() {
					return this.each( function() {
						var itemPosition,
							orderDropdowns = $( '.edit-menu-item-order' );

						$.each( orderDropdowns, function() {
							var orderDropdown = $( this ),
								menuItem = orderDropdown.closest( 'li.menu-item' ).first(),
								depth = menuItem.menuItemDepth(),
								isPrimaryMenuItem = ( 0 === depth ),
								$html = '',
								$selected = '';

							if ( isPrimaryMenuItem ) {
								var primaryItems = $( '.menu-item-depth-0' ),
									totalMenuItems = primaryItems.length;

								itemPosition = primaryItems.index( menuItem ) + 1;

								for ( let i = 1; i < totalMenuItems + 1; i++ ) {
									$selected = '';
									if ( i == itemPosition ) { 
										$selected = 'selected';
									}
									var itemString = wp.i18n.sprintf( 
										/* translators: 1: The current menu item number, 2: The total number of menu items. */
										wp.i18n._x( '%1$s of %2$s', 'part of a total number of menu items' ),
										i,
										totalMenuItems
									);
									$html += '<option ' + $selected + ' value="' + i + '">' + itemString + '</option>';
								}

							} else {
								var parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),
									parentItemId = parentItem.find( '.menu-item-data-db-id' ).val(),
									subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemId + '"]' ),
									totalSubMenuItems = subItems.length;

								itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;

								for ( let i = 1; i < totalSubMenuItems + 1; i++ ) {
									$selected = '';
									if ( i == itemPosition ) {
										$selected = 'selected';
									}
									var submenuString = wp.i18n.sprintf( 
										/* translators: 1: The current submenu item number, 2: The total number of submenu items. */
										wp.i18n._x( '%1$s of %2$s', 'part of a total number of menu items' ),
										i,
										totalSubMenuItems
									);
									$html += '<option ' + $selected + ' value="' + i + '">' + submenuString + '</option>';
								}

							}

							orderDropdown.html( $html );
						});
						
					});
				}
			});
		},

		countMenuItems : function( depth ) {
			return $( '.menu-item-depth-' + depth ).length;
		},

		moveMenuItem : function( $this, dir ) {
			var items, newItemPosition, newDepth,
				menuItems = $( '#menu-to-edit li' ),
				menuItemsCount = menuItems.length,
				thisItem = $this.parents( 'li.menu-item' ),
				thisItemChildren = thisItem.childMenuItems(),
				thisItemData = thisItem.getItemData(),
				thisItemDepth = parseInt( thisItem.menuItemDepth(), 10 ),
				thisItemPosition = parseInt( thisItem.index(), 10 ),
				nextItem = thisItem.next(),
				nextItemChildren = nextItem.childMenuItems(),
				nextItemDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1,
				prevItem = thisItem.prev(),
				prevItemDepth = parseInt( prevItem.menuItemDepth(), 10 ),
				prevItemId = prevItem.getItemData()['menu-item-db-id'],
				a11ySpeech = menus[ 'moved' + dir.charAt(0).toUpperCase() + dir.slice(1) ];

			switch ( dir ) {
			case 'up':
				newItemPosition = thisItemPosition - 1;

				// Already at top.
				if ( 0 === thisItemPosition )
					break;

				// If a sub item is moved to top, shift it to 0 depth.
				if ( 0 === newItemPosition && 0 !== thisItemDepth )
					thisItem.moveHorizontally( 0, thisItemDepth );

				// If prev item is sub item, shift to match depth.
				if ( 0 !== prevItemDepth )
					thisItem.moveHorizontally( prevItemDepth, thisItemDepth );

				// Does this item have sub items?
				if ( thisItemChildren ) {
					items = thisItem.add( thisItemChildren );
					// Move the entire block.
					items.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
				} else {
					thisItem.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
				}
				break;
			case 'down':
				// Does this item have sub items?
				if ( thisItemChildren ) {
					items = thisItem.add( thisItemChildren ),
						nextItem = menuItems.eq( items.length + thisItemPosition ),
						nextItemChildren = 0 !== nextItem.childMenuItems().length;

					if ( nextItemChildren ) {
						newDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1;
						thisItem.moveHorizontally( newDepth, thisItemDepth );
					}

					// Have we reached the bottom?
					if ( menuItemsCount === thisItemPosition + items.length )
						break;

					items.detach().insertAfter( menuItems.eq( thisItemPosition + items.length ) ).updateParentMenuItemDBId();
				} else {
					// If next item has sub items, shift depth.
					if ( 0 !== nextItemChildren.length )
						thisItem.moveHorizontally( nextItemDepth, thisItemDepth );

					// Have we reached the bottom?
					if ( menuItemsCount === thisItemPosition + 1 )
						break;
					thisItem.detach().insertAfter( menuItems.eq( thisItemPosition + 1 ) ).updateParentMenuItemDBId();
				}
				break;
			case 'top':
				// Already at top.
				if ( 0 === thisItemPosition )
					break;
				// Does this item have sub items?
				if ( thisItemChildren ) {
					items = thisItem.add( thisItemChildren );
					// Move the entire block.
					items.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
				} else {
					thisItem.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
				}
				break;
			case 'left':
				// As far left as possible.
				if ( 0 === thisItemDepth )
					break;
				thisItem.shiftHorizontally( -1 );
				break;
			case 'right':
				// Can't be sub item at top.
				if ( 0 === thisItemPosition )
					break;
				// Already sub item of prevItem.
				if ( thisItemData['menu-item-parent-id'] === prevItemId )
					break;
				thisItem.shiftHorizontally( 1 );
				break;
			}
			$this.trigger( 'focus' );
			api.registerChange();
			api.refreshKeyboardAccessibility();
			api.refreshAdvancedAccessibility();
			thisItem.updateParentDropdown();
			thisItem.updateOrderDropdown();

			if ( a11ySpeech ) {
				wp.a11y.speak( a11ySpeech );
			}
		},

		initAccessibility : function() {
			var menu = $( '#menu-to-edit' );

			api.refreshKeyboardAccessibility();
			api.refreshAdvancedAccessibility();

			// Refresh the accessibility when the user comes close to the item in any way.
			menu.on( 'mouseenter.refreshAccessibility focus.refreshAccessibility touchstart.refreshAccessibility' , '.menu-item' , function(){
				api.refreshAdvancedAccessibilityOfItem( $( this ).find( 'a.item-edit' ) );
			} );

			// We have to update on click as well because we might hover first, change the item, and then click.
			menu.on( 'click', 'a.item-edit', function() {
				api.refreshAdvancedAccessibilityOfItem( $( this ) );
			} );

			// Links for moving items.
			menu.on( 'click', '.menus-move', function () {
				var $this = $( this ),
					dir = $this.data( 'dir' );

				if ( 'undefined' !== typeof dir ) {
					api.moveMenuItem( $( this ).parents( 'li.menu-item' ).find( 'a.item-edit' ), dir );
				}
			});

			// Set menu parents data for all menu items.
			menu.updateParentDropdown();

			// Set menu order data for all menu items.
			menu.updateOrderDropdown();

			// Update menu item parent when value is changed.
			menu.on( 'change', '.edit-menu-item-parent', function() {
				api.changeMenuParent( $( this ) );
			});
			
			// Update menu item order when value is changed.
			menu.on( 'change', '.edit-menu-item-order', function() {
				api.changeMenuOrder( $( this ) );
			});
		},

		/**
		 * changeMenuParent( [parentDropdown] )
		 * 
		 * @since 6.7.0
		 *
		 * @param {object} parentDropdown select field
		 */
		changeMenuParent : function( parentDropdown ) {
			var menuItemNewPosition,
				menuItems = $( '#menu-to-edit li' ),
				$this = $( parentDropdown ),
				newParentID = $this.val(),
				menuItem = $this.closest( 'li.menu-item' ).first(),
				menuItemOldDepth = menuItem.menuItemDepth(),
				menuItemChildren = menuItem.childMenuItems(),
				menuItemNoChildren = parseInt( menuItem.childMenuItems().length, 10 ),
				parentItem = $( '#menu-item-' + newParentID ),
				parentItemDepth = parentItem.menuItemDepth(),
				menuItemNewDepth = parseInt( parentItemDepth ) + 1;

			if ( newParentID == 0 ) {
				menuItemNewDepth = 0;
			}

			menuItem.find( '.menu-item-data-parent-id' ).val( newParentID );
			menuItem.moveHorizontally( menuItemNewDepth, menuItemOldDepth );

			if ( menuItemNoChildren > 0 ) {
				menuItem = menuItem.add( menuItemChildren );
			}
			menuItem.detach();

			menuItems = $( '#menu-to-edit li' );

			var	parentItemPosition = parseInt( parentItem.index(), 10 ),
				parentItemNoChild = parseInt( parentItem.childMenuItems().length, 10 );

			if ( parentItemNoChild > 0 ){
				menuItemNewPosition = parentItemPosition + parentItemNoChild;
			} else {
				menuItemNewPosition = parentItemPosition;
			}

			if ( newParentID == 0 ) {
				menuItemNewPosition = menuItems.length - 1;
			}

			menuItem.insertAfter( menuItems.eq( menuItemNewPosition ) ).updateParentMenuItemDBId().updateParentDropdown().updateOrderDropdown();

			api.registerChange();
			api.refreshKeyboardAccessibility();
			api.refreshAdvancedAccessibility();
			$this.trigger( 'focus' );
			wp.a11y.speak( menus.parentUpdated, 'polite' );
		},

		/**
		 * changeMenuOrder( [OrderDropdown] )
		 * 
		 * @since 6.7.0
		 *
		 * @param {object} orderDropdown select field
		 */
		changeMenuOrder : function( orderDropdown ) {
			var menuItems = $( '#menu-to-edit li' ),
				$this = $( orderDropdown ),
				newOrderID = parseInt( $this.val(), 10),
				menuItem = $this.closest( 'li.menu-item' ).first(),
				menuItemChildren = menuItem.childMenuItems(),
				menuItemNoChildren = menuItemChildren.length,
				menuItemCurrentPosition = parseInt( menuItem.index(), 10 ),
				parentItemID = menuItem.find( '.menu-item-data-parent-id' ).val(),
				subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemID + '"]' ),
				currentItemAtPosition = $(subItems[newOrderID - 1]).closest( 'li.menu-item' );

			if ( menuItemNoChildren > 0 ) {
				menuItem = menuItem.add( menuItemChildren );
			}

			var currentItemNoChildren = currentItemAtPosition.childMenuItems().length,
				currentItemPosition = parseInt( currentItemAtPosition.index(), 10 );

			menuItems = $( '#menu-to-edit li' );

			var	menuItemNewPosition = currentItemPosition;

			if(menuItemCurrentPosition > menuItemNewPosition){
				menuItemNewPosition = currentItemPosition;
				menuItem.detach().insertBefore( menuItems.eq( menuItemNewPosition ) ).updateOrderDropdown();
			} else {
				menuItemNewPosition = menuItemNewPosition + currentItemNoChildren;
				menuItem.detach().insertAfter( menuItems.eq( menuItemNewPosition ) ).updateOrderDropdown();
			}

			api.registerChange();
			api.refreshKeyboardAccessibility();
			api.refreshAdvancedAccessibility();
			$this.trigger( 'focus' );
			wp.a11y.speak( menus.orderUpdated, 'polite' );
		},

		/**
		 * refreshAdvancedAccessibilityOfItem( [itemToRefresh] )
		 *
		 * Refreshes advanced accessibility buttons for one menu item.
		 * Shows or hides buttons based on the location of the menu item.
		 *
		 * @param {Object} itemToRefresh The menu item that might need its advanced accessibility buttons refreshed
		 */
		refreshAdvancedAccessibilityOfItem : function( itemToRefresh ) {

			// Only refresh accessibility when necessary.
			if ( true !== $( itemToRefresh ).data( 'needs_accessibility_refresh' ) ) {
				return;
			}

			var thisLink, thisLinkText, primaryItems, itemPosition, title,
				parentItem, parentItemId, parentItemName, subItems, totalSubItems,
				$this = $( itemToRefresh ),
				menuItem = $this.closest( 'li.menu-item' ).first(),
				depth = menuItem.menuItemDepth(),
				isPrimaryMenuItem = ( 0 === depth ),
				itemName = $this.closest( '.menu-item-handle' ).find( '.menu-item-title' ).text(),
				menuItemType = $this.closest( '.menu-item-handle' ).find( '.item-controls' ).find( '.item-type' ).text(),
				position = parseInt( menuItem.index(), 10 ),
				prevItemDepth = ( isPrimaryMenuItem ) ? depth : parseInt( depth - 1, 10 ),
				prevItemNameLeft = menuItem.prevAll('.menu-item-depth-' + prevItemDepth).first().find( '.menu-item-title' ).text(),
				prevItemNameRight = menuItem.prevAll('.menu-item-depth-' + depth).first().find( '.menu-item-title' ).text(),
				totalMenuItems = $('#menu-to-edit li').length,
				hasSameDepthSibling = menuItem.nextAll( '.menu-item-depth-' + depth ).length;

				menuItem.find( '.field-move' ).toggle( totalMenuItems > 1 );

			// Where can they move this menu item?
			if ( 0 !== position ) {
				thisLink = menuItem.find( '.menus-move-up' );
				thisLink.attr( 'aria-label', menus.moveUp ).css( 'display', 'inline' );
			}

			if ( 0 !== position && isPrimaryMenuItem ) {
				thisLink = menuItem.find( '.menus-move-top' );
				thisLink.attr( 'aria-label', menus.moveToTop ).css( 'display', 'inline' );
			}

			if ( position + 1 !== totalMenuItems && 0 !== position ) {
				thisLink = menuItem.find( '.menus-move-down' );
				thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
			}

			if ( 0 === position && 0 !== hasSameDepthSibling ) {
				thisLink = menuItem.find( '.menus-move-down' );
				thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
			}

			if ( ! isPrimaryMenuItem ) {
				thisLink = menuItem.find( '.menus-move-left' ),
				thisLinkText = menus.outFrom.replace( '%s', prevItemNameLeft );
				thisLink.attr( 'aria-label', menus.moveOutFrom.replace( '%s', prevItemNameLeft ) ).text( thisLinkText ).css( 'display', 'inline' );
			}

			if ( 0 !== position ) {
				if ( menuItem.find( '.menu-item-data-parent-id' ).val() !== menuItem.prev().find( '.menu-item-data-db-id' ).val() ) {
					thisLink = menuItem.find( '.menus-move-right' ),
					thisLinkText = menus.under.replace( '%s', prevItemNameRight );
					thisLink.attr( 'aria-label', menus.moveUnder.replace( '%s', prevItemNameRight ) ).text( thisLinkText ).css( 'display', 'inline' );
				}
			}

			if ( isPrimaryMenuItem ) {
				primaryItems = $( '.menu-item-depth-0' ),
				itemPosition = primaryItems.index( menuItem ) + 1,
				totalMenuItems = primaryItems.length,
				// String together help text for primary menu items.
				title = menus.menuFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalMenuItems );
			} else {
				parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),
				parentItemId = parentItem.find( '.menu-item-data-db-id' ).val(),
				parentItemName = parentItem.find( '.menu-item-title' ).text(),
				subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemId + '"]' ),
				totalSubItems = subItems.length,
				itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;

				// String together help text for sub menu items.
				if ( depth < 2 ) {
					title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalSubItems ).replace( '%5$s', parentItemName );
				} else {
					title = menus.subMenuMoreDepthFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalSubItems ).replace( '%5$s', parentItemName ).replace( '%6$d', depth );
				}
			}

			$this.attr( 'aria-label', title );

			// Mark this item's accessibility as refreshed.
			$this.data( 'needs_accessibility_refresh', false );
		},

		/**
		 * refreshAdvancedAccessibility
		 *
		 * Hides all advanced accessibility buttons and marks them for refreshing.
		 */
		refreshAdvancedAccessibility : function() {

			// Hide all the move buttons by default.
			$( '.menu-item-settings .field-move .menus-move' ).hide();

			// Mark all menu items as unprocessed.
			$( 'a.item-edit' ).data( 'needs_accessibility_refresh', true );

			// All open items have to be refreshed or they will show no links.
			$( '.menu-item-edit-active a.item-edit' ).each( function() {
				api.refreshAdvancedAccessibilityOfItem( this );
			} );
		},

		refreshKeyboardAccessibility : function() {
			$( 'a.item-edit' ).off( 'focus' ).on( 'focus', function(){
				$(this).off( 'keydown' ).on( 'keydown', function(e){

					var arrows,
						$this = $( this ),
						thisItem = $this.parents( 'li.menu-item' ),
						thisItemData = thisItem.getItemData();

					// Bail if it's not an arrow key.
					if ( 37 != e.which && 38 != e.which && 39 != e.which && 40 != e.which )
						return;

					// Avoid multiple keydown events.
					$this.off('keydown');

					// Bail if there is only one menu item.
					if ( 1 === $('#menu-to-edit li').length )
						return;

					// If RTL, swap left/right arrows.
					arrows = { '38': 'up', '40': 'down', '37': 'left', '39': 'right' };
					if ( $('body').hasClass('rtl') )
						arrows = { '38' : 'up', '40' : 'down', '39' : 'left', '37' : 'right' };

					switch ( arrows[e.which] ) {
					case 'up':
						api.moveMenuItem( $this, 'up' );
						break;
					case 'down':
						api.moveMenuItem( $this, 'down' );
						break;
					case 'left':
						api.moveMenuItem( $this, 'left' );
						break;
					case 'right':
						api.moveMenuItem( $this, 'right' );
						break;
					}
					// Put focus back on same menu item.
					$( '#edit-' + thisItemData['menu-item-db-id'] ).trigger( 'focus' );
					return false;
				});
			});
		},

		initPreviewing : function() {
			// Update the item handle title when the navigation label is changed.
			$( '#menu-to-edit' ).on( 'change input', '.edit-menu-item-title', function(e) {
				var input = $( e.currentTarget ), title, titleEl;
				title = input.val();
				titleEl = input.closest( '.menu-item' ).find( '.menu-item-title' );
				// Don't update to empty title.
				if ( title ) {
					titleEl.text( title ).removeClass( 'no-title' );
				} else {
					titleEl.text( wp.i18n._x( '(no label)', 'missing menu item navigation label' ) ).addClass( 'no-title' );
				}
			} );
		},

		initToggles : function() {
			// Init postboxes.
			postboxes.add_postbox_toggles('nav-menus');

			// Adjust columns functions for menus UI.
			columns.useCheckboxesForHidden();
			columns.checked = function(field) {
				$('.field-' + field).removeClass('hidden-field');
			};
			columns.unchecked = function(field) {
				$('.field-' + field).addClass('hidden-field');
			};
			// Hide fields.
			api.menuList.hideAdvancedMenuItemFields();

			$('.hide-postbox-tog').on( 'click', function () {
				var hidden = $( '.accordion-container li.accordion-section' ).filter(':hidden').map(function() { return this.id; }).get().join(',');
				$.post(ajaxurl, {
					action: 'closed-postboxes',
					hidden: hidden,
					closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
					page: 'nav-menus'
				});
			});
		},

		initSortables : function() {
			var currentDepth = 0, originalDepth, minDepth, maxDepth,
				prev, next, prevBottom, nextThreshold, helperHeight, transport,
				menuEdge = api.menuList.offset().left,
				body = $('body'), maxChildDepth,
				menuMaxDepth = initialMenuMaxDepth();

			if( 0 !== $( '#menu-to-edit li' ).length )
				$( '.drag-instructions' ).show();

			// Use the right edge if RTL.
			menuEdge += api.isRTL ? api.menuList.width() : 0;

			api.menuList.sortable({
				handle: '.menu-item-handle',
				placeholder: 'sortable-placeholder',
				items: api.options.sortableItems,
				start: function(e, ui) {
					var height, width, parent, children, tempHolder;

					// Handle placement for RTL orientation.
					if ( api.isRTL )
						ui.item[0].style.right = 'auto';

					transport = ui.item.children('.menu-item-transport');

					// Set depths. currentDepth must be set before children are located.
					originalDepth = ui.item.menuItemDepth();
					updateCurrentDepth(ui, originalDepth);

					// Attach child elements to parent.
					// Skip the placeholder.
					parent = ( ui.item.next()[0] == ui.placeholder[0] ) ? ui.item.next() : ui.item;
					children = parent.childMenuItems();
					transport.append( children );

					// Update the height of the placeholder to match the moving item.
					height = transport.outerHeight();
					// If there are children, account for distance between top of children and parent.
					height += ( height > 0 ) ? (ui.placeholder.css('margin-top').slice(0, -2) * 1) : 0;
					height += ui.helper.outerHeight();
					helperHeight = height;
					height -= 2;                                              // Subtract 2 for borders.
					ui.placeholder.height(height);

					// Update the width of the placeholder to match the moving item.
					maxChildDepth = originalDepth;
					children.each(function(){
						var depth = $(this).menuItemDepth();
						maxChildDepth = (depth > maxChildDepth) ? depth : maxChildDepth;
					});
					width = ui.helper.find('.menu-item-handle').outerWidth(); // Get original width.
					width += api.depthToPx(maxChildDepth - originalDepth);    // Account for children.
					width -= 2;                                               // Subtract 2 for borders.
					ui.placeholder.width(width);

					// Update the list of menu items.
					tempHolder = ui.placeholder.next( '.menu-item' );
					tempHolder.css( 'margin-top', helperHeight + 'px' ); // Set the margin to absorb the placeholder.
					ui.placeholder.detach();         // Detach or jQuery UI will think the placeholder is a menu item.
					$(this).sortable( 'refresh' );   // The children aren't sortable. We should let jQuery UI know.
					ui.item.after( ui.placeholder ); // Reattach the placeholder.
					tempHolder.css('margin-top', 0); // Reset the margin.

					// Now that the element is complete, we can update...
					updateSharedVars(ui);
				},
				stop: function(e, ui) {
					var children, subMenuTitle,
						depthChange = currentDepth - originalDepth;

					// Return child elements to the list.
					children = transport.children().insertAfter(ui.item);

					// Add "sub menu" description.
					subMenuTitle = ui.item.find( '.item-title .is-submenu' );
					if ( 0 < currentDepth )
						subMenuTitle.show();
					else
						subMenuTitle.hide();

					// Update depth classes.
					if ( 0 !== depthChange ) {
						ui.item.updateDepthClass( currentDepth );
						children.shiftDepthClass( depthChange );
						updateMenuMaxDepth( depthChange );
					}
					// Register a change.
					api.registerChange();
					// Update the item data.
					ui.item.updateParentMenuItemDBId();

					// Address sortable's incorrectly-calculated top in Opera.
					ui.item[0].style.top = 0;

					// Handle drop placement for rtl orientation.
					if ( api.isRTL ) {
						ui.item[0].style.left = 'auto';
						ui.item[0].style.right = 0;
					}

					api.refreshKeyboardAccessibility();
					api.refreshAdvancedAccessibility();
					ui.item.updateParentDropdown();
					ui.item.updateOrderDropdown();
					api.refreshAdvancedAccessibilityOfItem( ui.item.find( 'a.item-edit' ) );
				},
				change: function(e, ui) {
					// Make sure the placeholder is inside the menu.
					// Otherwise fix it, or we're in trouble.
					if( ! ui.placeholder.parent().hasClass('menu') )
						(prev.length) ? prev.after( ui.placeholder ) : api.menuList.prepend( ui.placeholder );

					updateSharedVars(ui);
				},
				sort: function(e, ui) {
					var offset = ui.helper.offset(),
						edge = api.isRTL ? offset.left + ui.helper.width() : offset.left,
						depth = api.negateIfRTL * api.pxToDepth( edge - menuEdge );

					/*
					 * Check and correct if depth is not within range.
					 * Also, if the dragged element is dragged upwards over an item,
					 * shift the placeholder to a child position.
					 */
					if ( depth > maxDepth || offset.top < ( prevBottom - api.options.targetTolerance ) ) {
						depth = maxDepth;
					} else if ( depth < minDepth ) {
						depth = minDepth;
					}

					if( depth != currentDepth )
						updateCurrentDepth(ui, depth);

					// If we overlap the next element, manually shift downwards.
					if( nextThreshold && offset.top + helperHeight > nextThreshold ) {
						next.after( ui.placeholder );
						updateSharedVars( ui );
						$( this ).sortable( 'refreshPositions' );
					}
				}
			});

			function updateSharedVars(ui) {
				var depth;

				prev = ui.placeholder.prev( '.menu-item' );
				next = ui.placeholder.next( '.menu-item' );

				// Make sure we don't select the moving item.
				if( prev[0] == ui.item[0] ) prev = prev.prev( '.menu-item' );
				if( next[0] == ui.item[0] ) next = next.next( '.menu-item' );

				prevBottom = (prev.length) ? prev.offset().top + prev.height() : 0;
				nextThreshold = (next.length) ? next.offset().top + next.height() / 3 : 0;
				minDepth = (next.length) ? next.menuItemDepth() : 0;

				if( prev.length )
					maxDepth = ( (depth = prev.menuItemDepth() + 1) > api.options.globalMaxDepth ) ? api.options.globalMaxDepth : depth;
				else
					maxDepth = 0;
			}

			function updateCurrentDepth(ui, depth) {
				ui.placeholder.updateDepthClass( depth, currentDepth );
				currentDepth = depth;
			}

			function initialMenuMaxDepth() {
				if( ! body[0].className ) return 0;
				var match = body[0].className.match(/menu-max-depth-(\d+)/);
				return match && match[1] ? parseInt( match[1], 10 ) : 0;
			}

			function updateMenuMaxDepth( depthChange ) {
				var depth, newDepth = menuMaxDepth;
				if ( depthChange === 0 ) {
					return;
				} else if ( depthChange > 0 ) {
					depth = maxChildDepth + depthChange;
					if( depth > menuMaxDepth )
						newDepth = depth;
				} else if ( depthChange < 0 && maxChildDepth == menuMaxDepth ) {
					while( ! $('.menu-item-depth-' + newDepth, api.menuList).length && newDepth > 0 )
						newDepth--;
				}
				// Update the depth class.
				body.removeClass( 'menu-max-depth-' + menuMaxDepth ).addClass( 'menu-max-depth-' + newDepth );
				menuMaxDepth = newDepth;
			}
		},

		initManageLocations : function () {
			$('#menu-locations-wrap form').on( 'submit', function(){
				window.onbeforeunload = null;
			});
			$('.menu-location-menus select').on('change', function () {
				var editLink = $(this).closest('tr').find('.locations-edit-menu-link');
				if ($(this).find('option:selected').data('orig'))
					editLink.show();
				else
					editLink.hide();
			});
		},

		attachMenuEditListeners : function() {
			var that = this;
			$('#update-nav-menu').on('click', function(e) {
				if ( e.target && e.target.className ) {
					if ( -1 != e.target.className.indexOf('item-edit') ) {
						return that.eventOnClickEditLink(e.target);
					} else if ( -1 != e.target.className.indexOf('menu-save') ) {
						return that.eventOnClickMenuSave(e.target);
					} else if ( -1 != e.target.className.indexOf('menu-delete') ) {
						return that.eventOnClickMenuDelete(e.target);
					} else if ( -1 != e.target.className.indexOf('item-delete') ) {
						return that.eventOnClickMenuItemDelete(e.target);
					} else if ( -1 != e.target.className.indexOf('item-cancel') ) {
						return that.eventOnClickCancelLink(e.target);
					}
				}
			});

			$( '#menu-name' ).on( 'input', _.debounce( function () {
				var menuName = $( document.getElementById( 'menu-name' ) ),
					menuNameVal = menuName.val();

				if ( ! menuNameVal || ! menuNameVal.replace( /\s+/, '' ) ) {
					// Add warning for invalid menu name.
					menuName.parent().addClass( 'form-invalid' );
				} else {
					// Remove warning for valid menu name.
					menuName.parent().removeClass( 'form-invalid' );
				}
			}, 500 ) );

			$('#add-custom-links input[type="text"]').on( 'keypress', function(e){
				$( '#customlinkdiv' ).removeClass( 'form-invalid' );
				$( '#custom-menu-item-url' ).removeAttr( 'aria-invalid' ).removeAttr( 'aria-describedby' );
				$( '#custom-url-error' ).hide();

				if ( e.keyCode === 13 ) {
					e.preventDefault();
					$( '#submit-customlinkdiv' ).trigger( 'click' );
				}
			});

			$( '#submit-customlinkdiv' ).on( 'click', function (e) {
				var urlInput = $( '#custom-menu-item-url' ),
					url = urlInput.val().trim(),
					errorMessage = $( '#custom-url-error' ),
					urlWrap = $( '#menu-item-url-wrap' ),
					urlRegex;

				// Hide the error message initially
				errorMessage.hide();
				urlWrap.removeClass( 'has-error' );

				/*
				 * Allow URLs including:
				 * - http://example.com/
				 * - //example.com
				 * - /directory/
				 * - ?query-param
				 * - #target
				 * - mailto:[email protected]
				 *
				 * Any further validation will be handled on the server when the setting is attempted to be saved,
				 * so this pattern does not need to be complete.
				 */
				urlRegex = /^((\w+:)?\/\/\w.*|\w+:(?!\/\/$)|\/|\?|#)/;
				if ( ! urlRegex.test( url ) ) {
					e.preventDefault();
					urlInput.addClass( 'form-invalid' )
						.attr( 'aria-invalid', 'true' )
						.attr( 'aria-describedby', 'custom-url-error' );

					errorMessage.show();
					var errorText = errorMessage.text();
					urlWrap.addClass( 'has-error' );
					// Announce error message via screen reader
					wp.a11y.speak( errorText, 'assertive' );
				}
			});
		},

		/**
		 * Handle toggling bulk selection checkboxes for menu items.
		 *
		 * @since 5.8.0
		 */ 
		attachBulkSelectButtonListeners : function() {
			var that = this;

			$( '.bulk-select-switcher' ).on( 'change', function() {
				if ( this.checked ) {
					$( '.bulk-select-switcher' ).prop( 'checked', true );
					that.enableBulkSelection();
				} else {
					$( '.bulk-select-switcher' ).prop( 'checked', false );
					that.disableBulkSelection();
				}
			});
		},

		/**
		 * Enable bulk selection checkboxes for menu items.
		 *
		 * @since 5.8.0
		 */ 
		enableBulkSelection : function() {
			var checkbox = $( '#menu-to-edit .menu-item-checkbox' );

			$( '#menu-to-edit' ).addClass( 'bulk-selection' );
			$( '#nav-menu-bulk-actions-top' ).addClass( 'bulk-selection' );
			$( '#nav-menu-bulk-actions-bottom' ).addClass( 'bulk-selection' );

			$.each( checkbox, function() {
				$(this).prop( 'disabled', false );
			});
		},

		/**
		 * Disable bulk selection checkboxes for menu items.
		 *
		 * @since 5.8.0
		 */ 
		disableBulkSelection : function() {
			var checkbox = $( '#menu-to-edit .menu-item-checkbox' );

			$( '#menu-to-edit' ).removeClass( 'bulk-selection' );
			$( '#nav-menu-bulk-actions-top' ).removeClass( 'bulk-selection' );
			$( '#nav-menu-bulk-actions-bottom' ).removeClass( 'bulk-selection' );

			if ( $( '.menu-items-delete' ).is( '[aria-describedby="pending-menu-items-to-delete"]' ) ) {
				$( '.menu-items-delete' ).removeAttr( 'aria-describedby' );
			}

			$.each( checkbox, function() {
				$(this).prop( 'disabled', true ).prop( 'checked', false );
			});

			$( '.menu-items-delete' ).addClass( 'disabled' );
			$( '#pending-menu-items-to-delete ul' ).empty();
		},

		/**
		 * Listen for state changes on bulk action checkboxes.
		 *
		 * @since 5.8.0
		 */ 
		attachMenuCheckBoxListeners : function() {
			var that = this;

			$( '#menu-to-edit' ).on( 'change', '.menu-item-checkbox', function() {
				that.setRemoveSelectedButtonStatus();
			});
		},

		/**
		 * Create delete button to remove menu items from collection.
		 *
		 * @since 5.8.0
		 */ 
		attachMenuItemDeleteButton : function() {
			var that = this;

			$( document ).on( 'click', '.menu-items-delete', function( e ) {
				var itemsPendingDeletion, itemsPendingDeletionList, deletionSpeech;

				e.preventDefault();

				if ( ! $(this).hasClass( 'disabled' ) ) {
					$.each( $( '.menu-item-checkbox:checked' ), function( index, element ) {
						$( element ).parents( 'li' ).find( 'a.item-delete' ).trigger( 'click' );
					});

					$( '.menu-items-delete' ).addClass( 'disabled' );
					$( '.bulk-select-switcher' ).prop( 'checked', false );

					itemsPendingDeletion     = '';
					itemsPendingDeletionList = $( '#pending-menu-items-to-delete ul li' );

					$.each( itemsPendingDeletionList, function( index, element ) {
						var itemName = $( element ).find( '.pending-menu-item-name' ).text();
						var itemSpeech = menus.menuItemDeletion.replace( '%s', itemName );

						itemsPendingDeletion += itemSpeech;
						if ( ( index + 1 ) < itemsPendingDeletionList.length ) {
							itemsPendingDeletion += ', ';
						}
					});

					deletionSpeech = menus.itemsDeleted.replace( '%s', itemsPendingDeletion );
					wp.a11y.speak( deletionSpeech, 'polite' );
					that.disableBulkSelection();
					$( '#menu-to-edit' ).updateParentDropdown();
					$( '#menu-to-edit' ).updateOrderDropdown();
				}
			});
		},

		/**
		 * List menu items awaiting deletion.
		 *
		 * @since 5.8.0
		 */ 
		attachPendingMenuItemsListForDeletion : function() {
			$( '#post-body-content' ).on( 'change', '.menu-item-checkbox', function() {
				var menuItemName, menuItemType, menuItemID, listedMenuItem;

				if ( ! $( '.menu-items-delete' ).is( '[aria-describedby="pending-menu-items-to-delete"]' ) ) {
					$( '.menu-items-delete' ).attr( 'aria-describedby', 'pending-menu-items-to-delete' );
				}

				menuItemName = $(this).next().text();
				menuItemType = $(this).parent().next( '.item-controls' ).find( '.item-type' ).text();
				menuItemID   = $(this).attr( 'data-menu-item-id' );

				listedMenuItem = $( '#pending-menu-items-to-delete ul' ).find( '[data-menu-item-id=' + menuItemID + ']' );
				if ( listedMenuItem.length > 0 ) {
					listedMenuItem.remove();
				}

				if ( this.checked === true ) {
					$( '#pending-menu-items-to-delete ul' ).append(
						'<li data-menu-item-id="' + menuItemID + '">' +
							'<span class="pending-menu-item-name">' + menuItemName + '</span> ' +
							'<span class="pending-menu-item-type">(' + menuItemType + ')</span>' +
							'<span class="separator"></span>' +
						'</li>'
					);
				}

				$( '#pending-menu-items-to-delete li .separator' ).html( ', ' );
				$( '#pending-menu-items-to-delete li .separator' ).last().html( '.' );
			});
		},

		/**
		 * Set status of bulk delete checkbox.
		 *
		 * @since 5.8.0
		 */ 
		setBulkDeleteCheckboxStatus : function() {
			var that = this;
			var checkbox = $( '#menu-to-edit .menu-item-checkbox' );

			$.each( checkbox, function() {
				if ( $(this).prop( 'disabled' ) ) {
					$(this).prop( 'disabled', false );
				} else {
					$(this).prop( 'disabled', true );
				}

				if ( $(this).is( ':checked' ) ) {
					$(this).prop( 'checked', false );
				}
			});

			that.setRemoveSelectedButtonStatus();
		},

		/**
		 * Set status of menu items removal button.
		 *
		 * @since 5.8.0
		 */ 
		setRemoveSelectedButtonStatus : function() {
			var button = $( '.menu-items-delete' );

			if ( $( '.menu-item-checkbox:checked' ).length > 0 ) {
				button.removeClass( 'disabled' );
			} else {
				button.addClass( 'disabled' );
			}
		},

		attachMenuSaveSubmitListeners : function() {
			/*
			 * When a navigation menu is saved, store a JSON representation of all form data
			 * in a single input to avoid PHP `max_input_vars` limitations. See #14134.
			 */
			$( '#update-nav-menu' ).on( 'submit', function() {
				var navMenuData = $( '#update-nav-menu' ).serializeArray();
				$( '[name="nav-menu-data"]' ).val( JSON.stringify( navMenuData ) );
			});
		},

		attachThemeLocationsListeners : function() {
			var loc = $('#nav-menu-theme-locations'), params = {};
			params.action = 'menu-locations-save';
			params['menu-settings-column-nonce'] = $('#menu-settings-column-nonce').val();
			loc.find('input[type="submit"]').on( 'click', function() {
				loc.find('select').each(function() {
					params[this.name] = $(this).val();
				});
				loc.find( '.spinner' ).addClass( 'is-active' );
				$.post( ajaxurl, params, function() {
					loc.find( '.spinner' ).removeClass( 'is-active' );
				});
				return false;
			});
		},

		attachQuickSearchListeners : function() {
			var searchTimer;

			// Prevent form submission.
			$( '#nav-menu-meta' ).on( 'submit', function( event ) {
				event.preventDefault();
			});

			$( '#nav-menu-meta' ).on( 'input', '.quick-search', function() {
				var $this = $( this );

				$this.attr( 'autocomplete', 'off' );

				if ( searchTimer ) {
					clearTimeout( searchTimer );
				}

				searchTimer = setTimeout( function() {
					api.updateQuickSearchResults( $this );
				}, 500 );
			}).on( 'blur', '.quick-search', function() {
				api.lastSearch = '';
			});
		},

		updateQuickSearchResults : function(input) {
			var panel, params,
				minSearchLength = 2,
				q = input.val();

			/*
			 * Minimum characters for a search. Also avoid a new Ajax search when
			 * the pressed key (e.g. arrows) doesn't change the searched term.
			 */
			if ( q.length < minSearchLength || api.lastSearch == q ) {
				return;
			}

			api.lastSearch = q;

			panel = input.parents('.tabs-panel');
			params = {
				'action': 'menu-quick-search',
				'response-format': 'markup',
				'menu': $('#menu').val(),
				'menu-settings-column-nonce': $('#menu-settings-column-nonce').val(),
				'q': q,
				'type': input.attr('name')
			};

			$( '.spinner', panel ).addClass( 'is-active' );

			$.post( ajaxurl, params, function(menuMarkup) {
				api.processQuickSearchQueryResponse(menuMarkup, params, panel);
			});
		},

		addCustomLink : function( processMethod ) {
			var url = $('#custom-menu-item-url').val().toString(),
				label = $('#custom-menu-item-name').val(),
				urlRegex;

			if ( '' !== url ) {
				url = url.trim();
			}

			processMethod = processMethod || api.addMenuItemToBottom;

			/*
			 * Allow URLs including:
			 * - http://example.com/
			 * - //example.com
			 * - /directory/
			 * - ?query-param
			 * - #target
			 * - mailto:[email protected]
			 *
			 * Any further validation will be handled on the server when the setting is attempted to be saved,
			 * so this pattern does not need to be complete.
			 */
			urlRegex = /^((\w+:)?\/\/\w.*|\w+:(?!\/\/$)|\/|\?|#)/;
			if ( ! urlRegex.test( url ) ) {
				$('#customlinkdiv').addClass('form-invalid');
				return false;
			}

			// Show the Ajax spinner.
			$( '.customlinkdiv .spinner' ).addClass( 'is-active' );
			this.addLinkToMenu( url, label, processMethod, function() {
				// Remove the Ajax spinner.
				$( '.customlinkdiv .spinner' ).removeClass( 'is-active' );
				// Set custom link form back to defaults.
				$('#custom-menu-item-name').val('').trigger( 'blur' );
				$( '#custom-menu-item-url' ).val( '' ).attr( 'placeholder', 'https://' );
			});
		},

		addLinkToMenu : function(url, label, processMethod, callback) {
			processMethod = processMethod || api.addMenuItemToBottom;
			callback = callback || function(){};

			api.addItemToMenu({
				'-1': {
					'menu-item-type': 'custom',
					'menu-item-url': url,
					'menu-item-title': label
				}
			}, processMethod, callback);
		},

		addItemToMenu : function(menuItem, processMethod, callback) {
			var menu = $('#menu').val(),
				nonce = $('#menu-settings-column-nonce').val(),
				params;

			processMethod = processMethod || function(){};
			callback = callback || function(){};

			params = {
				'action': 'add-menu-item',
				'menu': menu,
				'menu-settings-column-nonce': nonce,
				'menu-item': menuItem
			};

			$.post( ajaxurl, params, function(menuMarkup) {
				var ins = $('#menu-instructions');

				menuMarkup = menuMarkup || '';
				menuMarkup = menuMarkup.toString().trim(); // Trim leading whitespaces.
				processMethod(menuMarkup, params);

				// Make it stand out a bit more visually, by adding a fadeIn.
				$( 'li.pending' ).hide().fadeIn('slow');
				$( '.drag-instructions' ).show();
				if( ! ins.hasClass( 'menu-instructions-inactive' ) && ins.siblings().length )
					ins.addClass( 'menu-instructions-inactive' );

				callback();
			});
		},

		/**
		 * Process the add menu item request response into menu list item. Appends to menu.
		 *
		 * @param {string} menuMarkup The text server response of menu item markup.
		 *
		 * @fires document#menu-item-added Passes menuMarkup as a jQuery object.
		 */
		addMenuItemToBottom : function( menuMarkup ) {
			var $menuMarkup = $( menuMarkup );
			$menuMarkup.hideAdvancedMenuItemFields().appendTo( api.targetList );
			api.refreshKeyboardAccessibility();
			api.refreshAdvancedAccessibility();
			wp.a11y.speak( menus.itemAdded );
			$( document ).trigger( 'menu-item-added', [ $menuMarkup ] );
		},

		/**
		 * Process the add menu item request response into menu list item. Prepends to menu.
		 *
		 * @param {string} menuMarkup The text server response of menu item markup.
		 *
		 * @fires document#menu-item-added Passes menuMarkup as a jQuery object.
		 */
		addMenuItemToTop : function( menuMarkup ) {
			var $menuMarkup = $( menuMarkup );
			$menuMarkup.hideAdvancedMenuItemFields().prependTo( api.targetList );
			api.refreshKeyboardAccessibility();
			api.refreshAdvancedAccessibility();
			wp.a11y.speak( menus.itemAdded );
			$( document ).trigger( 'menu-item-added', [ $menuMarkup ] );
		},

		attachUnsavedChangesListener : function() {
			$('#menu-management input, #menu-management select, #menu-management, #menu-management textarea, .menu-location-menus select').on( 'change', function(){
				api.registerChange();
			});

			if ( 0 !== $('#menu-to-edit').length || 0 !== $('.menu-location-menus select').length ) {
				window.onbeforeunload = function(){
					if ( api.menusChanged )
						return wp.i18n.__( 'The changes you made will be lost if you navigate away from this page.' );
				};
			} else {
				// Make the post boxes read-only, as they can't be used yet.
				$( '#menu-settings-column' ).find( 'input,select' ).end().find( 'a' ).attr( 'href', '#' ).off( 'click' );
			}
		},

		registerChange : function() {
			api.menusChanged = true;
		},

		attachTabsPanelListeners : function() {
			$('#menu-settings-column').on('click', function(e) {
				var selectAreaMatch, selectAll, panelId, wrapper, items,
					target = $(e.target);

				if ( target.hasClass('nav-tab-link') ) {

					panelId = target.data( 'type' );

					wrapper = target.parents('.accordion-section-content').first();

					// Upon changing tabs, we want to uncheck all checkboxes.
					$( 'input', wrapper ).prop( 'checked', false );

					$('.tabs-panel-active', wrapper).removeClass('tabs-panel-active').addClass('tabs-panel-inactive');
					$('#' + panelId, wrapper).removeClass('tabs-panel-inactive').addClass('tabs-panel-active');

					$('.tabs', wrapper).removeClass('tabs');
					target.parent().addClass('tabs');

					// Select the search bar.
					$('.quick-search', wrapper).trigger( 'focus' );

					// Hide controls in the search tab if no items found.
					if ( ! wrapper.find( '.tabs-panel-active .menu-item-title' ).length ) {
						wrapper.addClass( 'has-no-menu-item' );
					} else {
						wrapper.removeClass( 'has-no-menu-item' );
					}

					e.preventDefault();
				} else if ( target.hasClass( 'select-all' ) ) {
					selectAreaMatch = target.closest( '.button-controls' ).data( 'items-type' );
					if ( selectAreaMatch ) {
						items = $( '#' + selectAreaMatch + ' .tabs-panel-active .menu-item-title input' );

						if ( items.length === items.filter( ':checked' ).length && ! target.is( ':checked' ) ) {
							items.prop( 'checked', false );
						} else if ( target.is( ':checked' ) ) {
							items.prop( 'checked', true );
						}
					}
				} else if ( target.hasClass( 'menu-item-checkbox' ) ) {
					selectAreaMatch = target.closest( '.tabs-panel-active' ).parent().attr( 'id' );
					if ( selectAreaMatch ) {
						items     = $( '#' + selectAreaMatch + ' .tabs-panel-active .menu-item-title input' );
						selectAll = $( '.button-controls[data-items-type="' + selectAreaMatch + '"] .select-all' );

						if ( items.length === items.filter( ':checked' ).length && ! selectAll.is( ':checked' ) ) {
							selectAll.prop( 'checked', true );
						} else if ( selectAll.is( ':checked' ) ) {
							selectAll.prop( 'checked', false );
						}
					}
				} else if ( target.hasClass('submit-add-to-menu') ) {
					api.registerChange();

					if ( e.target.id && 'submit-customlinkdiv' == e.target.id )
						api.addCustomLink( api.addMenuItemToBottom );
					else if ( e.target.id && -1 != e.target.id.indexOf('submit-') )
						$('#' + e.target.id.replace(/submit-/, '')).addSelectedToMenu( api.addMenuItemToBottom );
					return false;
				}
			});

			/*
			 * Delegate the `click` event and attach it just to the pagination
			 * links thus excluding the current page `<span>`. See ticket #35577.
			 */
			$( '#nav-menu-meta' ).on( 'click', 'a.page-numbers', function() {
				var $container = $( this ).closest( '.inside' );

				$.post( ajaxurl, this.href.replace( /.*\?/, '' ).replace( /action=([^&]*)/, '' ) + '&action=menu-get-metabox',
					function( resp ) {
						var metaBoxData = JSON.parse( resp ),
							toReplace;

						if ( -1 === resp.indexOf( 'replace-id' ) ) {
							return;
						}

						// Get the post type menu meta box to update.
						toReplace = document.getElementById( metaBoxData['replace-id'] );

						if ( ! metaBoxData.markup || ! toReplace ) {
							return;
						}

						// Update the post type menu meta box with new content from the response.
						$container.html( metaBoxData.markup );
					}
				);

				return false;
			});
		},

		eventOnClickEditLink : function(clickedEl) {
			var settings, item,
			matchedSection = /#(.*)$/.exec(clickedEl.href);

			if ( matchedSection && matchedSection[1] ) {
				settings = $('#'+matchedSection[1]);
				item = settings.parent();
				if( 0 !== item.length ) {
					if( item.hasClass('menu-item-edit-inactive') ) {
						if( ! settings.data('menu-item-data') ) {
							settings.data( 'menu-item-data', settings.getItemData() );
						}
						settings.slideDown('fast');
						item.removeClass('menu-item-edit-inactive')
							.addClass('menu-item-edit-active');
					} else {
						settings.slideUp('fast');
						item.removeClass('menu-item-edit-active')
							.addClass('menu-item-edit-inactive');
					}
					return false;
				}
			}
		},

		eventOnClickCancelLink : function(clickedEl) {
			var settings = $( clickedEl ).closest( '.menu-item-settings' ),
				thisMenuItem = $( clickedEl ).closest( '.menu-item' );

			thisMenuItem.removeClass( 'menu-item-edit-active' ).addClass( 'menu-item-edit-inactive' );
			settings.setItemData( settings.data( 'menu-item-data' ) ).hide();
			// Restore the title of the currently active/expanded menu item.
			thisMenuItem.find( '.menu-item-title' ).text( settings.data( 'menu-item-data' )['menu-item-title'] );

			return false;
		},

		eventOnClickMenuSave : function() {
			var locs = '',
			menuName = $('#menu-name'),
			menuNameVal = menuName.val();

			// Cancel and warn if invalid menu name.
			if ( ! menuNameVal || ! menuNameVal.replace( /\s+/, '' ) ) {
				menuName.parent().addClass( 'form-invalid' );
				return false;
			}
			// Copy menu theme locations.
			$('#nav-menu-theme-locations select').each(function() {
				locs += '<input type="hidden" name="' + this.name + '" value="' + $(this).val() + '" />';
			});
			$('#update-nav-menu').append( locs );
			// Update menu item position data.
			api.menuList.find('.menu-item-data-position').val( function(index) { return index + 1; } );
			window.onbeforeunload = null;

			return true;
		},

		eventOnClickMenuDelete : function() {
			// Delete warning AYS.
			if ( window.confirm( wp.i18n.__( 'You are about to permanently delete this menu.\n\'Cancel\' to stop, \'OK\' to delete.' ) ) ) {
				window.onbeforeunload = null;
				return true;
			}
			return false;
		},

		eventOnClickMenuItemDelete : function(clickedEl) {
			var itemID = parseInt(clickedEl.id.replace('delete-', ''), 10);

			api.removeMenuItem( $('#menu-item-' + itemID) );
			api.registerChange();
			return false;
		},

		/**
		 * Process the quick search response into a search result
		 *
		 * @param string resp The server response to the query.
		 * @param object req The request arguments.
		 * @param jQuery panel The tabs panel we're searching in.
		 */
		processQuickSearchQueryResponse : function(resp, req, panel) {
			var matched, newID,
			takenIDs = {},
			form = document.getElementById('nav-menu-meta'),
			pattern = /menu-item[(\[^]\]*/,
			$items = $('<div>').html(resp).find('li'),
			wrapper = panel.closest( '.accordion-section-content' ),
			selectAll = wrapper.find( '.button-controls .select-all' ),
			$item;

			if( ! $items.length ) {
				$('.categorychecklist', panel).html( '<li><p>' + wp.i18n.__( 'No results found.' ) + '</p></li>' );
				$( '.spinner', panel ).removeClass( 'is-active' );
				wrapper.addClass( 'has-no-menu-item' );
				return;
			}

			$items.each(function(){
				$item = $(this);

				// Make a unique DB ID number.
				matched = pattern.exec($item.html());

				if ( matched && matched[1] ) {
					newID = matched[1];
					while( form.elements['menu-item[' + newID + '][menu-item-type]'] || takenIDs[ newID ] ) {
						newID--;
					}

					takenIDs[newID] = true;
					if ( newID != matched[1] ) {
						$item.html( $item.html().replace(new RegExp(
							'menu-item\\[' + matched[1] + '\\]', 'g'),
							'menu-item[' + newID + ']'
						) );
					}
				}
			});

			$('.categorychecklist', panel).html( $items );
			$( '.spinner', panel ).removeClass( 'is-active' );
			wrapper.removeClass( 'has-no-menu-item' );

			if ( selectAll.is( ':checked' ) ) {
				selectAll.prop( 'checked', false );
			}
		},

		/**
		 * Remove a menu item.
		 *
		 * @param {Object} el The element to be removed as a jQuery object.
		 *
		 * @fires document#menu-removing-item Passes the element to be removed.
		 */
		removeMenuItem : function(el) {
			var children = el.childMenuItems();

			$( document ).trigger( 'menu-removing-item', [ el ] );
			el.addClass('deleting').animate({
					opacity : 0,
					height: 0
				}, 350, function() {
					var ins = $('#menu-instructions');
					el.remove();
					children.shiftDepthClass( -1 ).updateParentMenuItemDBId();
					if ( 0 === $( '#menu-to-edit li' ).length ) {
						$( '.drag-instructions' ).hide();
						ins.removeClass( 'menu-instructions-inactive' );
					}
					api.refreshAdvancedAccessibility();
					wp.a11y.speak( menus.itemRemoved );
					$( '#menu-to-edit' ).updateParentDropdown();
					$( '#menu-to-edit' ).updateOrderDropdown();
				});
		},

		depthToPx : function(depth) {
			return depth * api.options.menuItemDepthPerLevel;
		},

		pxToDepth : function(px) {
			return Math.floor(px / api.options.menuItemDepthPerLevel);
		}

	};

	$( function() {

		wpNavMenu.init();

		// Prevent focused element from being hidden by the sticky footer.
		$( '.menu-edit a, .menu-edit button, .menu-edit input, .menu-edit textarea, .menu-edit select' ).on('focus', function() {
			if ( window.innerWidth >= 783 ) {
				var navMenuHeight = $( '#nav-menu-footer' ).height() + 20;
				var bottomOffset = $(this).offset().top - ( $(window).scrollTop() + $(window).height() - $(this).height() );

				if ( bottomOffset > 0 ) {
					bottomOffset = 0;
				}
				bottomOffset = bottomOffset * -1;

				if( bottomOffset < navMenuHeight ) {
					var scrollTop = $(document).scrollTop();
					$(document).scrollTop( scrollTop + ( navMenuHeight - bottomOffset ) );
				}
			}
		});
	});

	// Show bulk action.
	$( document ).on( 'menu-item-added', function() {
		if ( ! $( '.bulk-actions' ).is( ':visible' ) ) {
			$( '.bulk-actions' ).show();
		}
	} );

	// Hide bulk action.
	$( document ).on( 'menu-removing-item', function( e, el ) {
		var menuElement = $( el ).parents( '#menu-to-edit' );
		if ( menuElement.find( 'li' ).length === 1 && $( '.bulk-actions' ).is( ':visible' ) ) {
			$( '.bulk-actions' ).hide();
		}
	} );

})(jQuery);
Info Secure From the Nrvna The brand new Nxt Xperience, Position BIZVERSE Blog

Info Secure From the Nrvna The brand new Nxt Xperience, Position BIZVERSE Blog

Info Secure From the Nrvna The brand new Nxt Xperience, Position BIZVERSE Blog

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