@polygonjs/polygonjs/src/engine/nodes/event/Block.ts

node-based WebGL 3D engine https://polygonjs.com

/**
 * Blocks incoming envetts
 *
 * @remarks
 * This can be useful to debug events, to prevents incoming events to be propagatted further.
 *
 *
 */
import {TypedEventNode} from './_Base';
import {EventConnectionPoint, EventConnectionPointType} from '../utils/io/connections/Event';
import {NodeParamsConfig, ParamConfig} from '../utils/params/ParamsConfig';
import {isBooleanTrue} from '../../../core/BooleanValue';
import { EventContext } from '../../../core/event/EventContextType';

class BlockParamsConfig extends NodeParamsConfig {
	/** @param toggle on to block incoming events */
	blocking = ParamConfig.BOOLEAN(1);
}
const ParamsConfig = new BlockParamsConfig();

export class BlockEventNode extends TypedEventNode<BlockParamsConfig> {
	override paramsConfig = ParamsConfig;

	static override type() {
		return 'block';
	}
	static readonly OUTPUT = 'output';

	override initializeNode() {
		this.io.inputs.setNamedInputConnectionPoints([
			new EventConnectionPoint('in', EventConnectionPointType.BASE, this._process_incoming_event.bind(this)),
		]);
		this.io.outputs.setNamedOutputConnectionPoints([
			new EventConnectionPoint(BlockEventNode.OUTPUT, EventConnectionPointType.BASE),
		]);
	}

	private trigger_output(context: EventContext<MouseEvent>) {
		this.dispatchEventToOutput(BlockEventNode.OUTPUT, context);
	}

	private _process_incoming_event(context: EventContext<MouseEvent>) {
		if (!isBooleanTrue(this.pv.blocking)) {
			this.trigger_output(context);
		}
	}
}