@lcap/asl
Version:
NetEase Application Specific Language
66 lines • 2.29 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventEmitter = void 0;
const decorators_1 = require("../decorators");
class EventEmitter {
constructor() {
this._events = {};
}
/**
* 监听事件
* @param eventName 事件名
* @param listener 监听器
*/
on(eventName, listener) {
let listeners = this._events[eventName];
if (!listeners)
listeners = this._events[eventName] = [];
const index = listeners.indexOf(listener);
!~index && listeners.push(listener);
}
/**
* 取消监听事件
* @param eventName 事件名
* @param listener 监听器
*/
off(eventName, listener) {
const listeners = this._events[eventName];
if (listeners) {
const index = listeners.indexOf(listener);
~index && listeners.splice(index, 1);
}
}
/**
* 只监听一次事件
* @param eventName 事件名
* @param listener 监听器
*/
once(eventName, listener) {
const temp = (...args) => {
this.off(eventName, temp);
listener.apply(this, args);
};
this.on(eventName, temp);
}
/**
* 触发事件
* @param eventName 事件名
* @param args 事件参数
*/
emit(eventName, ...args) {
const listeners = this._events[eventName];
listeners && listeners.forEach((listener) => listener.apply(this, args));
}
}
__decorate([
decorators_1.excludedInJSON()
], EventEmitter.prototype, "_events", void 0);
exports.EventEmitter = EventEmitter;
exports.default = EventEmitter;
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