/**
 * @license
 * Copyright 厦门乾元盛世科技有限公司 All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file.
 */
import { ElementRef, Renderer } from '@angular/core';
import { Menu } from './menu';
/**
 * Menu导航菜单
 * 参考: https://github.com/react-component/menu
 */
export declare class MenuItemGroup {
    private renderer;
    private elementRef;
    private parentMenu;
    isMenuItemGroup: boolean;
    disabled: boolean;
    /** 用户CSS样式 */
    class: string;
    constructor(renderer: Renderer, elementRef: ElementRef, parentMenu: Menu);
    /** 样式前缀 */
    readonly prefixCls: string;
    /** 最终样式 */
    readonly classes: string;
    readonly titleClass: string;
    readonly listClass: string;
}