yuxuannnn_utils/lib/eventBus/DOMEventBus.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 _DOMEventBus_eventMap;
Object.defineProperty(exports, "__esModule", { value: true });
exports.DOMEventBus = void 0;
class DOMEventBus {
    constructor() {
        _DOMEventBus_eventMap.set(this, new Map());
    }
    /**
     *
     * @param dom
     * @param originEventType 注册的原生事件
     * @param eventType 内部事件队列对应的key
     */
    addEventListener(dom, originEventType, eventType) {
        const that = this;
        dom.addEventListener(originEventType, function (e) {
            const eventSet = __classPrivateFieldGet(that, _DOMEventBus_eventMap, "f").get(eventType);
            if (!eventSet)
                return;
            for (const event of eventSet) {
                event.call(this, e);
            }
        });
    }
    addEvent(eventType, handler) {
        let eventSet = __classPrivateFieldGet(this, _DOMEventBus_eventMap, "f").get(eventType);
        if (eventSet) {
            eventSet.add(handler);
        }
        else {
            eventSet = new Set();
            eventSet.add(handler);
            __classPrivateFieldGet(this, _DOMEventBus_eventMap, "f").set(eventType, eventSet);
        }
    }
    removeEvent(eventType, handler) {
        // 同一类型的事件只需要注册一次就可以，利用事件队列添加和移除模拟事件的注册和销毁
        const eventSet = __classPrivateFieldGet(this, _DOMEventBus_eventMap, "f").get(eventType);
        if (!eventSet)
            return;
        eventSet.delete(handler);
    }
}
exports.DOMEventBus = DOMEventBus;
_DOMEventBus_eventMap = new WeakMap();