listeners.ts

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`4918da41` 2022-03-17 Pavel Safronov	1	export interface Listener {
	2	element: Element;
	3	type: string;
	4	listener: (event: Event) => void;
	5	}
	6
	7	export class ListenerManager {
	8	private listeners: Listener[] = [];
	9
	10	public addListener(element: Element, type: string, listener: (event: Event) => void): void {
	11	const { listeners } = this;
	12	element.addEventListener(type, listener);
	13	listeners.push({ element, type, listener });
	14	}
	15
	16	public removeListeners() {
	17	const { listeners } = this;
	18	listeners.forEach(value => {
	19	const { element, type, listener } = value;
	20	element.removeEventListener(type, listener);
	21	});
	22	listeners.length = 0;
	23	}
	24	}