import { TypedNode } from '../_Base';
import { NodeContext } from '../../poly/NodeContext';
import { NodeParamsConfig } from '../utils/params/ParamsConfig';
import { BaseEventConnectionPoint } from '../utils/io/connections/Event';
import { EventContext } from '../../../core/event/EventContextType';
type DispatchHook = (event_context: EventContext<Event>) => void;
/**
 *
 *
 * TypedEventNode is the base class for all nodes that process events. This inherits from [TypedNode](/docs/api/TypedNode).
 *
 */
export declare class TypedEventNode<K extends NodeParamsConfig> extends TypedNode<NodeContext.EVENT, K> {
    static context(): NodeContext;
    initializeBaseNode(): void;
    private _cookWithoutInputsBound;
    _cookWithoutInputs(): void;
    cook(): void;
    processEventViaConnectionPoint(eventContext: EventContext<Event>, connectionPoint: BaseEventConnectionPoint): void;
    processEvent(event_context: EventContext<Event>): void;
    protected dispatchEventToOutput(output_name: string, event_context: EventContext<Event>): Promise<void>;
    private _on_dispatch_hooks_by_output_name;
    /**
     * onDispatch is called when an output triggers an event.
     *
     * Here is an example usage to listen to events:
     *
     * ``` ts
     *let _currentState = false;
     *function setHit( newState ){
     *  if( _currentState != newState ){
     *    if( newState ){
     *      playSound();
     *    }
     *    _currentState = newState;
     *  }
     *}
     *
     *const raycastNode = scene.node('<path to the node>');
     *raycastNode.onDispatch('hit', ()=>setHit(true) );
     *raycastNode.onDispatch('miss', ()=>setHit(false) );
     * ```
     *
     * Alternatively, you can also have the following arguments from the callback
     *
     * - viewer: the [viewer](https://polygonjs.com/docs/api/TypedViewer) displaying the scene.
     * - event: the mouse/pointer/keyboard event that originally triggered the event
     * - emitter: the domElement the event was triggered from (either the canvas or the document)
     * - value: an optional value linked to the event.
     *
     * ``` ts
     *raycastNode.onDispatch('hit',(eventContext)=>{
     *  const {viewer, event, emitter, value} = eventContext;
     *});
     * ```
     *
     */
    onDispatch(outputName: string, callback: DispatchHook): void;
    private run_on_dispatch_hook;
}
export type BaseEventNodeType = TypedEventNode<any>;
export declare class BaseEventNodeClass extends TypedEventNode<any> {
}
export {};