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Edit File : nav-menu.js \| Size : 50.09 KB
/** * 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' ); }); }); }, 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; } }); }, 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(); 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 ); } }); }, /** * 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, $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(), 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$d', itemPosition ).replace( '%3$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 + '"]' ), itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1; // String together help text for sub menu items. title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$s', parentItemName ); } $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(); }, 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'); if ( e.keyCode === 13 ) { e.preventDefault(); $( '#submit-customlinkdiv' ).trigger( 'click' ); } }); }, /* * 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(); } }); }, /* * 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(); if ( '' !== url ) { url = url.trim(); } processMethod = processMethod \|\| api.addMenuItemToBottom; if ( '' === url \|\| 'https://' == url \|\| 'http://' == 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 ); }); }, 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); Back

Edit File : nav-menu.js | Size : 50.09 KB

/**
 * 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' );
						});
					});
				},
				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;
				}
			});
		},

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();

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 );
				}
			});
		},

/**
		 * 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,
				$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(),
				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$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$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 + '"]' ),
				itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;

// String together help text for sub menu items.
				title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$s', parentItemName );
			}

$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();
				},
				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;
			}

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');

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

/**
		 * 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();
				}
			});
		},

/**
		 * 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();

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

processMethod = processMethod || api.addMenuItemToBottom;

if ( '' === url || 'https://' == url || 'http://' == 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 );
				});
		},

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);

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