import { EventObject } from "./EventObject";
/**
 * @private
 */
export type EventStringType = string | "start" | "loopComplete" | "complete" | "fadeIn" | "fadeInComplete" | "fadeOut" | "fadeOutComplete" | "frameEvent" | "soundEvent";
/**
 * - The event dispatcher interface.
 * Dragonbones event dispatch usually relies on docking engine to implement, which defines the event method to be implemented when docking the engine.
 * @version DragonBones 4.5
 * @language en_US
 */
export interface IEventDispatcher {
    /**
     * - Checks whether the object has any listeners registered for a specific type of event。
     * @param type - Event type.
     * @version DragonBones 4.5
     * @language en_US
     */
    hasDBEventListener(type: EventStringType): boolean;
    /**
     * - Dispatches an event into the event flow.
     * @param type - Event type.
     * @param eventObject - Event object.
     * @see dragonBones.EventObject
     * @version DragonBones 4.5
     * @language en_US
     */
    dispatchDBEvent(type: EventStringType, eventObject: EventObject): void;
    /**
     * - Add an event listener object so that the listener receives notification of an event.
     * @param type - Event type.
     * @param listener - Event listener.
     * @param thisObject - The listener function's "this".
     * @version DragonBones 4.5
     * @language en_US
     */
    addDBEventListener(type: EventStringType, listener: Function, thisObject: any): void;
    /**
     * - Removes a listener from the object.
     * @param type - Event type.
     * @param listener - Event listener.
     * @param thisObject - The listener function's "this".
     * @version DragonBones 4.5
     * @language en_US
     */
    removeDBEventListener(type: EventStringType, listener: Function, thisObject: any): void;
}