43 lines
1.0 KiB
TypeScript
43 lines
1.0 KiB
TypeScript
import Singleton from '../Base/Singleton'
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import { EventEnum } from '../Enum';
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interface IItem {
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func: Function;
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ctx: unknown;
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}
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export default class EventManager extends Singleton {
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static get Instance() {
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return super.GetInstance<EventManager>();
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}
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private map: Map<EventEnum, Array<IItem>> = new Map();
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on(event: EventEnum, func: Function, ctx?: unknown) {
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if (this.map.has(event)) {
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this.map.get(event).push({ func, ctx });
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} else {
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this.map.set(event, [{ func, ctx }]);
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}
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}
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off(event: EventEnum, func: Function, ctx?: unknown) {
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if (this.map.has(event)) {
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const index = this.map.get(event).findIndex(i => func === i.func && i.ctx === ctx);
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index > -1 && this.map.get(event).splice(index, 1);
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}
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}
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emit(event: EventEnum, ...params: unknown[]) {
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if (this.map.has(event)) {
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this.map.get(event).forEach(({ func, ctx }) => {
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ctx ? func.apply(ctx, params) : func(...params);
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});
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}
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}
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clear() {
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this.map.clear();
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}
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}
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