/**

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* WordPress Administration Navigation Menu

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* Interface JS functions

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*

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* @version 2.0.0

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*

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* @package WordPress

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* @subpackage Administration

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* @output wp-admin/js/nav-menu.js

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*/

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

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(function($) {

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var api;

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/**

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* Contains all the functions to handle WordPress navigation menus administration.

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*

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* @namespace wpNavMenu

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*/

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api = window.wpNavMenu = {

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options : {

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menuItemDepthPerLevel : 30, // Do not use directly. Use depthToPx and pxToDepth instead.

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globalMaxDepth: 11,

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sortableItems: '> *',

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targetTolerance: 0

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},

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menuList : undefined, // Set in init.

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targetList : undefined, // Set in init.

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menusChanged : false,

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isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),

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negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,

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lastSearch: '',

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// Functions that run on init.

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init : function() {

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api.menuList = $('#menu-to-edit');

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api.targetList = api.menuList;

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this.jQueryExtensions();

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this.attachMenuEditListeners();

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this.attachQuickSearchListeners();

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this.attachThemeLocationsListeners();

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this.attachMenuSaveSubmitListeners();

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this.attachTabsPanelListeners();

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this.attachUnsavedChangesListener();

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if ( api.menuList.length )

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this.initSortables();

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if ( menus.oneThemeLocationNoMenus )

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

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this.initManageLocations();

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this.initAccessibility();

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this.initToggles();

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this.initPreviewing();

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},

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jQueryExtensions : function() {

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// jQuery extensions.

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$.fn.extend({

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menuItemDepth : function() {

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var margin = api.isRTL ? this.eq(0).css('margin-right') : this.eq(0).css('margin-left');

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return api.pxToDepth( margin && -1 != margin.indexOf('px') ? margin.slice(0, -2) : 0 );

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},

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updateDepthClass : function(current, prev) {

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return this.each(function(){

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var t = $(this);

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prev = prev || t.menuItemDepth();

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$(this).removeClass('menu-item-depth-'+ prev )

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.addClass('menu-item-depth-'+ current );

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});

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},

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shiftDepthClass : function(change) {

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return this.each(function(){

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var t = $(this),

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depth = t.menuItemDepth(),

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newDepth = depth + change;

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t.removeClass( 'menu-item-depth-'+ depth )

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.addClass( 'menu-item-depth-'+ ( newDepth ) );

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if ( 0 === newDepth ) {

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t.find( '.is-submenu' ).hide();

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}

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});

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},

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childMenuItems : function() {

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var result = $();

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this.each(function(){

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var t = $(this), depth = t.menuItemDepth(), next = t.next( '.menu-item' );

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while( next.length && next.menuItemDepth() > depth ) {

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result = result.add( next );

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next = next.next( '.menu-item' );

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}

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});

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return result;

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},

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shiftHorizontally : function( dir ) {

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return this.each(function(){

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var t = $(this),

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depth = t.menuItemDepth(),

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newDepth = depth + dir;

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// Change .menu-item-depth-n class.

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t.moveHorizontally( newDepth, depth );

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});

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},

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moveHorizontally : function( newDepth, depth ) {

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return this.each(function(){

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var t = $(this),

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children = t.childMenuItems(),

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diff = newDepth - depth,

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subItemText = t.find('.is-submenu');

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// Change .menu-item-depth-n class.

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t.updateDepthClass( newDepth, depth ).updateParentMenuItemDBId();

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// If it has children, move those too.

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if ( children ) {

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children.each(function() {

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var t = $(this),

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thisDepth = t.menuItemDepth(),

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newDepth = thisDepth + diff;

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t.updateDepthClass(newDepth, thisDepth).updateParentMenuItemDBId();

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});

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}

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// Show "Sub item" helper text.

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if (0 === newDepth)

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subItemText.hide();

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else

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subItemText.show();

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});

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},

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updateParentMenuItemDBId : function() {

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return this.each(function(){

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var item = $(this),

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input = item.find( '.menu-item-data-parent-id' ),

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depth = parseInt( item.menuItemDepth(), 10 ),

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parentDepth = depth - 1,

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parent = item.prevAll( '.menu-item-depth-' + parentDepth ).first();

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if ( 0 === depth ) { // Item is on the top level, has no parent.

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input.val(0);

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} else { // Find the parent item, and retrieve its object id.

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input.val( parent.find( '.menu-item-data-db-id' ).val() );

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}

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});

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},

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hideAdvancedMenuItemFields : function() {

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return this.each(function(){

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var that = $(this);

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$('.hide-column-tog').not(':checked').each(function(){

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that.find('.field-' + $(this).val() ).addClass('hidden-field');

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});

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});

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},

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/**

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* Adds selected menu items to the menu.

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*

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* @ignore

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*

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* @param jQuery metabox The metabox jQuery object.

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*/

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addSelectedToMenu : function(processMethod) {

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if ( 0 === $('#menu-to-edit').length ) {

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return false;

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}

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return this.each(function() {

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var t = $(this), menuItems = {},

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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' ),

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re = /menu-item\[([^\]]*)/;

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processMethod = processMethod || api.addMenuItemToBottom;

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// If no items are checked, bail.

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if ( !checkboxes.length )

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return false;

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// Show the Ajax spinner.

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t.find( '.button-controls .spinner' ).addClass( 'is-active' );

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// Retrieve menu item data.

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$(checkboxes).each(function(){

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var t = $(this),

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listItemDBIDMatch = re.exec( t.attr('name') ),

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listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);

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if ( this.className && -1 != this.className.indexOf('add-to-top') )

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processMethod = api.addMenuItemToTop;

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menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );

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});

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// Add the items.

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api.addItemToMenu(menuItems, processMethod, function(){

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// Deselect the items and hide the Ajax spinner.

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checkboxes.prop( 'checked', false );

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t.find( '.button-controls .select-all' ).prop( 'checked', false );

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t.find( '.button-controls .spinner' ).removeClass( 'is-active' );

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});

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});

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},

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getItemData : function( itemType, id ) {

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itemType = itemType || 'menu-item';

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var itemData = {}, i,

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fields = [

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'menu-item-db-id',

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'menu-item-object-id',

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'menu-item-object',

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'menu-item-parent-id',

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'menu-item-position',

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'menu-item-type',

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'menu-item-title',

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'menu-item-url',

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'menu-item-description',

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'menu-item-attr-title',

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'menu-item-target',

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'menu-item-classes',

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'menu-item-xfn'

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];

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if( !id && itemType == 'menu-item' ) {

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id = this.find('.menu-item-data-db-id').val();

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}

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if( !id ) return itemData;

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this.find('input').each(function() {

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var field;

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i = fields.length;

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while ( i-- ) {

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if( itemType == 'menu-item' )

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field = fields[i] + '[' + id + ']';

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else if( itemType == 'add-menu-item' )

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field = 'menu-item[' + id + '][' + fields[i] + ']';

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if (

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this.name &&

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field == this.name

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) {

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itemData[fields[i]] = this.value;

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}

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}

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});

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return itemData;

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},

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

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itemType = itemType || 'menu-item';

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if( !id && itemType == 'menu-item' ) {

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id = $('.menu-item-data-db-id', this).val();

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}

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if( !id ) return this;

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this.find('input').each(function() {

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var t = $(this), field;

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$.each( itemData, function( attr, val ) {

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if( itemType == 'menu-item' )

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field = attr + '[' + id + ']';

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else if( itemType == 'add-menu-item' )

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field = 'menu-item[' + id + '][' + attr + ']';

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if ( field == t.attr('name') ) {

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t.val( val );

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}

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});

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});

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return this;

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}

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});

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},

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countMenuItems : function( depth ) {

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return $( '.menu-item-depth-' + depth ).length;

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},

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moveMenuItem : function( $this, dir ) {

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var items, newItemPosition, newDepth,

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

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menuItemsCount = menuItems.length,

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thisItem = $this.parents( 'li.menu-item' ),

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thisItemChildren = thisItem.childMenuItems(),

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thisItemData = thisItem.getItemData(),

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thisItemDepth = parseInt( thisItem.menuItemDepth(), 10 ),

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thisItemPosition = parseInt( thisItem.index(), 10 ),

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nextItem = thisItem.next(),

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nextItemChildren = nextItem.childMenuItems(),

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nextItemDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1,

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prevItem = thisItem.prev(),

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prevItemDepth = parseInt( prevItem.menuItemDepth(), 10 ),

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prevItemId = prevItem.getItemData()['menu-item-db-id'];

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switch ( dir ) {

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case 'up':

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newItemPosition = thisItemPosition - 1;

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// Already at top.

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if ( 0 === thisItemPosition )

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break;

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// If a sub item is moved to top, shift it to 0 depth.

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if ( 0 === newItemPosition && 0 !== thisItemDepth )

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thisItem.moveHorizontally( 0, thisItemDepth );

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// If prev item is sub item, shift to match depth.

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if ( 0 !== prevItemDepth )

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thisItem.moveHorizontally( prevItemDepth, thisItemDepth );

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// Does this item have sub items?

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if ( thisItemChildren ) {

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items = thisItem.add( thisItemChildren );

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// Move the entire block.

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items.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();

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} else {

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thisItem.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();

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}

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break;

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case 'down':

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// Does this item have sub items?

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if ( thisItemChildren ) {

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items = thisItem.add( thisItemChildren ),

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nextItem = menuItems.eq( items.length + thisItemPosition ),

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nextItemChildren = 0 !== nextItem.childMenuItems().length;

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if ( nextItemChildren ) {

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newDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1;

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thisItem.moveHorizontally( newDepth, thisItemDepth );

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}

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// Have we reached the bottom?

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if ( menuItemsCount === thisItemPosition + items.length )

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break;

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items.detach().insertAfter( menuItems.eq( thisItemPosition + items.length ) ).updateParentMenuItemDBId();

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} else {

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// If next item has sub items, shift depth.

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if ( 0 !== nextItemChildren.length )

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thisItem.moveHorizontally( nextItemDepth, thisItemDepth );

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// Have we reached the bottom?

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if ( menuItemsCount === thisItemPosition + 1 )

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break;

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thisItem.detach().insertAfter( menuItems.eq( thisItemPosition + 1 ) ).updateParentMenuItemDBId();

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}

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break;

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case 'top':

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// Already at top.

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if ( 0 === thisItemPosition )

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break;

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// Does this item have sub items?

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if ( thisItemChildren ) {

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items = thisItem.add( thisItemChildren );

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// Move the entire block.

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items.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();

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} else {

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thisItem.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();

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}

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break;

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case 'left':

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// As far left as possible.

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if ( 0 === thisItemDepth )

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break;

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thisItem.shiftHorizontally( -1 );

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break;

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case 'right':

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// Can't be sub item at top.

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if ( 0 === thisItemPosition )

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break;

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// Already sub item of prevItem.

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if ( thisItemData['menu-item-parent-id'] === prevItemId )

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break;

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thisItem.shiftHorizontally( 1 );

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break;

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}

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$this.trigger( 'focus' );

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api.registerChange();

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api.refreshKeyboardAccessibility();

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api.refreshAdvancedAccessibility();

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},

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initAccessibility : function() {

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var menu = $( '#menu-to-edit' );

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api.refreshKeyboardAccessibility();

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api.refreshAdvancedAccessibility();

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// Refresh the accessibility when the user comes close to the item in any way.

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menu.on( 'mouseenter.refreshAccessibility focus.refreshAccessibility touchstart.refreshAccessibility' , '.menu-item' , function(){

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api.refreshAdvancedAccessibilityOfItem( $( this ).find( 'a.item-edit' ) );

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} );

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// We have to update on click as well because we might hover first, change the item, and then click.

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menu.on( 'click', 'a.item-edit', function() {

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api.refreshAdvancedAccessibilityOfItem( $( this ) );

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} );

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// Links for moving items.

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menu.on( 'click', '.menus-move', function () {

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var $this = $( this ),

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dir = $this.data( 'dir' );

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if ( 'undefined' !== typeof dir ) {

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api.moveMenuItem( $( this ).parents( 'li.menu-item' ).find( 'a.item-edit' ), dir );

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}

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});

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},

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/**

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* refreshAdvancedAccessibilityOfItem( [itemToRefresh] )

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*

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* Refreshes advanced accessibility buttons for one menu item.

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* Shows or hides buttons based on the location of the menu item.

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*

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* @param {Object} itemToRefresh The menu item that might need its advanced accessibility buttons refreshed

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*/

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refreshAdvancedAccessibilityOfItem : function( itemToRefresh ) {

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// Only refresh accessibility when necessary.

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if ( true !== $( itemToRefresh ).data( 'needs_accessibility_refresh' ) ) {

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return;

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}

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var thisLink, thisLinkText, primaryItems, itemPosition, title,

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parentItem, parentItemId, parentItemName, subItems,

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$this = $( itemToRefresh ),

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menuItem = $this.closest( 'li.menu-item' ).first(),

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depth = menuItem.menuItemDepth(),

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isPrimaryMenuItem = ( 0 === depth ),

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itemName = $this.closest( '.menu-item-handle' ).find( '.menu-item-title' ).text(),

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position = parseInt( menuItem.index(), 10 ),

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prevItemDepth = ( isPrimaryMenuItem ) ? depth : parseInt( depth - 1, 10 ),

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prevItemNameLeft = menuItem.prevAll('.menu-item-depth-' + prevItemDepth).first().find( '.menu-item-title' ).text(),

[449] Fix | Delete

prevItemNameRight = menuItem.prevAll('.menu-item-depth-' + depth).first().find( '.menu-item-title' ).text(),

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totalMenuItems = $('#menu-to-edit li').length,

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hasSameDepthSibling = menuItem.nextAll( '.menu-item-depth-' + depth ).length;

[452] Fix | Delete

[453] Fix | Delete

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

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[455] Fix | Delete

// Where can they move this menu item?

[456] Fix | Delete

if ( 0 !== position ) {

[457] Fix | Delete

thisLink = menuItem.find( '.menus-move-up' );

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thisLink.attr( 'aria-label', menus.moveUp ).css( 'display', 'inline' );

[459] Fix | Delete

}

[460] Fix | Delete

[461] Fix | Delete

if ( 0 !== position && isPrimaryMenuItem ) {

[462] Fix | Delete

thisLink = menuItem.find( '.menus-move-top' );

[463] Fix | Delete

thisLink.attr( 'aria-label', menus.moveToTop ).css( 'display', 'inline' );

[464] Fix | Delete

}

[465] Fix | Delete

[466] Fix | Delete

if ( position + 1 !== totalMenuItems && 0 !== position ) {

[467] Fix | Delete

thisLink = menuItem.find( '.menus-move-down' );

[468] Fix | Delete

thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );

[469] Fix | Delete

}

[470] Fix | Delete

[471] Fix | Delete

if ( 0 === position && 0 !== hasSameDepthSibling ) {

[472] Fix | Delete

thisLink = menuItem.find( '.menus-move-down' );

[473] Fix | Delete

thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );

[474] Fix | Delete

}

[475] Fix | Delete

[476] Fix | Delete

if ( ! isPrimaryMenuItem ) {

[477] Fix | Delete

thisLink = menuItem.find( '.menus-move-left' ),

[478] Fix | Delete

thisLinkText = menus.outFrom.replace( '%s', prevItemNameLeft );

[479] Fix | Delete

thisLink.attr( 'aria-label', menus.moveOutFrom.replace( '%s', prevItemNameLeft ) ).text( thisLinkText ).css( 'display', 'inline' );

[480] Fix | Delete

}

[481] Fix | Delete

[482] Fix | Delete

if ( 0 !== position ) {

[483] Fix | Delete

if ( menuItem.find( '.menu-item-data-parent-id' ).val() !== menuItem.prev().find( '.menu-item-data-db-id' ).val() ) {

[484] Fix | Delete

thisLink = menuItem.find( '.menus-move-right' ),

[485] Fix | Delete

thisLinkText = menus.under.replace( '%s', prevItemNameRight );

[486] Fix | Delete

thisLink.attr( 'aria-label', menus.moveUnder.replace( '%s', prevItemNameRight ) ).text( thisLinkText ).css( 'display', 'inline' );

[487] Fix | Delete

}

[488] Fix | Delete

}

[489] Fix | Delete

[490] Fix | Delete

if ( isPrimaryMenuItem ) {

[491] Fix | Delete

primaryItems = $( '.menu-item-depth-0' ),

[492] Fix | Delete

itemPosition = primaryItems.index( menuItem ) + 1,

[493] Fix | Delete

totalMenuItems = primaryItems.length,

[494] Fix | Delete

[495] Fix | Delete

// String together help text for primary menu items.

[496] Fix | Delete

title = menus.menuFocus.replace( '%1$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$d', totalMenuItems );

[497] Fix | Delete

} else {

[498] Fix | Delete

parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),

[499] Fix | Delete