yuxuannnn_utils/lib/eventBus/EventBus.js

xs开发的前端工具包

"use strict";
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _EventBus_eventMap;
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventBus = void 0;
/**
 * 发布订阅模式 : 事件总线
 */
class EventBus {
    constructor() {
        _EventBus_eventMap.set(this, new Map());
    }
    /**
     * 监听事件
     */
    $on(eventType, handle) {
        const _eventSet = __classPrivateFieldGet(this, _EventBus_eventMap, "f").get(eventType);
        if (_eventSet) {
            _eventSet.add(handle);
        }
        else {
            const newEventSet = new Set();
            newEventSet.add(handle);
            __classPrivateFieldGet(this, _EventBus_eventMap, "f").set(eventType, newEventSet);
        }
    }
    $emit(eventType, ...args) {
        const _eventSet = __classPrivateFieldGet(this, _EventBus_eventMap, "f").get(eventType);
        if (_eventSet) {
            for (const event of _eventSet) {
                event.apply(this, args);
                if (event.__once__) {
                    _eventSet.delete(event);
                }
            }
        }
    }
    $once(eventType, handle) {
        handle.__once__ = true; // 事件仅触发一次
        this.$on(eventType, handle);
    }
    $off(eventType, handle) {
        const _eventSet = __classPrivateFieldGet(this, _EventBus_eventMap, "f").get(eventType);
        if (!_eventSet) {
            return;
        }
        if (!handle) {
            // 销毁eventType的所有事件
            _eventSet.clear();
        }
        else {
            _eventSet.delete(handle);
        }
    }
}
exports.EventBus = EventBus;
_EventBus_eventMap = new WeakMap();