/**
 * @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 { AfterViewInit, AfterContentInit, EventEmitter } from '@angular/core';
import { Menu, ClickParam } from '../menu/menu';
import { DropdownButton } from './dropdown.button';
export declare type DropdownPlacement = 'topLeft' | 'topCenter' | 'topRight' | 'bottomLeft' | 'bottomCenter' | 'bottomRight';
export declare type DropdownTriggerType = 'click' | 'hover';
/**
 * Dropdown - 下拉菜单
 */
export declare class Dropdown implements AfterContentInit, AfterViewInit {
    private renderer;
    private elementRef;
    private dropdownButton;
    /** 样式前缀 */
    dropdownPrefixCls: string;
    /** 触发下拉的行为，可选取值：Array<'click'|'hover'> */
    triggerAction: DropdownTriggerType | DropdownTriggerType[];
    /** 触发标签的selector，默认为空，表示当前标签 */
    triggerAt: string;
    /**
     * 菜单弹出位置：`bottomLeft` `bottomCenter` `bottomRight` `topLeft` `topCenter` `topRight`
     */
    dropdownPlacement: DropdownPlacement;
    /** 位置信息 */
    builtinPlacements: Object;
    /**
     * 下拉菜单的最小宽度与触发的组件宽度一致
     */
    dropdownMatchTriggerWidth: boolean;
    /** 缩略写法：action placement */
    dropdown: string;
    /**
     * 一个钩子函数: 默认点击菜单后将关闭菜单，如果此函数返回false，将停止关闭菜单。
     */
    menuClickHanlder: (event: any) => boolean;
    /** 是否禁用状态，默认为 false */
    disabled: boolean;
    /** 鼠标移入后显示菜单的延迟时间（秒）*/
    mouseEnterDelay: number;
    /** 鼠标移出后隐藏菜单的延迟时间（秒）*/
    mouseLeaveDelay: number;
    /** 菜单 */
    menu: Menu;
    /** 菜单显示事件 */
    menuVisibleChange: EventEmitter<boolean>;
    /** 菜单显示或隐藏相关 */
    private popupVisible;
    private popupContainer;
    private delayTimer;
    private alignClass;
    private clickOutsideHandler;
    private touchOutsideHandler;
    constructor(renderer: Renderer, elementRef: ElementRef, dropdownButton: DropdownButton);
    ngAfterContentInit(): void;
    onMenuClick(event: ClickParam): void;
    ngAfterViewInit(): void;
    protected getPopupContainer(): HTMLElement;
    /**
     * The underlying host native element
     */
    getHostElement(): HTMLElement;
    getTiggerElement(): HTMLElement;
    getMenuElement(): HTMLElement;
    onTriggerClick(event: MouseEvent): void;
    onTriggerMouseEnter(event: MouseEvent): void;
    onTriggerMouseLeave(event: MouseEvent): void;
    isClickTiggerAction(): boolean;
    isPointerTiggerAction(): boolean;
    getAlign(): {};
    forceAlign(): void;
    onAlign(align: any): void;
    /**
     * 显示或者隐藏菜单
     *
     * @param visible true-显示，false-隐藏
     * @param delayS 延迟时间（单位：秒）
     */
    delaySetPopupVisible(visible: boolean, delayS: number): void;
    isPopupVisible(): boolean;
    setPopupVisible(popupVisible: boolean): void;
    afterPopupVisibleChange(popupVisible: boolean): void;
    onDocumentClick(event: MouseEvent): void;
    clearOutsideHandler(): void;
    clearDelayTimer(): void;
}