import { IDestroyable } from '../common';
export interface IEventTarget extends IDestroyable {
    addEventListener(eventName: string, listener: XEventListener): any;
    removeEventListener(eventName: string, listener?: XEventListener): any;
    dispatchEvent(...args: Array<any>): any;
}
export declare const EVENT_LISTENER_ORDER = 999;
/**
 * 扩展的的EventListener，与原生的EventListener相区别
 */
export declare type XEventListener = (...params: any[]) => void;
export interface ChangedItem {
    key: string;
    oldValue: any;
    newValue: any;
    option: any;
}
export declare type KeyValueListener = (key: string, oldValue: any, newValue: any, option?: any) => void;
/**
 * 数据模型事件对象接口
 */
export interface IModelEventTarget extends IDestroyable {
    /**
     * 监听指定属性的改变事件
     * @param propertyName
     * @param listener
     */
    register(propertyName: string, listener: KeyValueListener): IModelEventTarget;
    /**
     * 撤销对指定属性改变的监听
     * @param propertyName
     * @param listener
     */
    revoke(propertyName: string, listener: KeyValueListener): any;
    /**
     * 触发属性改变事件
     * @param item
     */
    trigger(item: ChangedItem | Array<ChangedItem>): any;
}