/**
 * @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 { EventEmitter, ElementRef, Renderer } from '@angular/core';
import { OnInit, QueryList } from '@angular/core';
import { FormControl } from '../input/form.control';
import { Checkbox } from './checkbox';
export declare class CheckboxGroup extends FormControl implements OnInit {
    private renderer;
    private elementRef;
    private compositionMode;
    /** 样式前缀 */
    prefixCls: string;
    /** 用户CSS样式 */
    class: string;
    /** 值变更事件 */
    change: EventEmitter<any>;
    /** 子列表 */
    children: QueryList<Checkbox>;
    constructor(renderer: Renderer, elementRef: ElementRef, compositionMode: boolean);
    onClick(): void;
    ngOnInit(): void;
    writeValue(value: any): void;
    hasValue(value: any): boolean;
    /** 当子选项发生变更时，也变更Group自身的值 */
    toggle(value: any, checked: boolean): void;
    /** 更新子列表的checked状态 */
    toggleChildren(): void;
}