import { ViewEntity, SceneEvent, EventType } from '@turbox3d/event-manager';
import { CommandManager } from './CommandManager';
import { Interaction } from './Interaction';
import { SceneTool } from './type';
export declare abstract class Command extends Interaction {
    protected holder: CommandManager;
    private parent?;
    protected $children: {
        [key: string]: Command;
    };
    private activeChildren;
    constructor(holder: CommandManager, parent?: Command | undefined);
    /**
     * 应用当前 Command 及其子级，该方法不仅会强制激活当前 Command 及其子级，还会使它们的交互事件生效
     * 同时只能有一个 Command 节点处于应用状态（兄弟节点的交互事件是互斥的）
     * 永远不用重写该方法，相关初始化逻辑请在 active 接口中编码
     */
    apply(...args: any[]): void;
    /**
     * 激活当前 Command 及其子级，为即将到来的交互事件做好准备
     */
    active(...args: any[]): void;
    /**
     * 注销当前 Command 及其子级，同时将停止响应该指令及子级的交互事件
     */
    dispose(...args: any[]): void;
    distributeEvent(eventType: EventType, ev: ViewEntity, event: SceneEvent, tools: SceneTool): void;
    private onChildActive;
    private onChildDispose;
}