59 lines
1.9 KiB
JavaScript
59 lines
1.9 KiB
JavaScript
(function (factory) {
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if (typeof module === "object" && typeof module.exports === "object") {
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var v = factory(require, exports);
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if (v !== undefined) module.exports = v;
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}
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else if (typeof define === "function" && define.amd) {
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define(["require", "exports"], factory);
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}
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})(function (require, exports) {
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.EventDispatcher = void 0;
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class EventDispatcher {
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constructor() {
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this._listeners = new Map();
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}
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addEventListener(type, listener) {
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var _a;
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this.removeEventListener(type, listener);
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if (!this._listeners.get(type)) {
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this._listeners.set(type, []);
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}
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(_a = this._listeners.get(type)) === null || _a === void 0 ? void 0 : _a.push(listener);
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}
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dispatchEvent(type, args) {
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var _a;
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(_a = this._listeners.get(type)) === null || _a === void 0 ? void 0 : _a.forEach((handler) => handler(args));
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}
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hasEventListener(type) {
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return !!this._listeners.get(type);
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}
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removeAllEventListeners(type) {
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if (!type) {
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this._listeners = new Map();
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}
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else {
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this._listeners.delete(type);
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}
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}
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removeEventListener(type, listener) {
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const arr = this._listeners.get(type);
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if (!arr) {
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return;
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}
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const length = arr.length, idx = arr.indexOf(listener);
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if (idx < 0) {
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return;
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}
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if (length === 1) {
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this._listeners.delete(type);
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}
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else {
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arr.splice(idx, 1);
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}
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}
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}
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exports.EventDispatcher = EventDispatcher;
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});
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