1/* 2 * Copyright (c) 2022-2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16// 注册动态回调类 17export class DynamicLoader { 18 private callback: (key: string) => void = (): void => { 19 }; 20 private static instance: DynamicLoader = new DynamicLoader(); 21 22 register(callback: (key: string) => void) { 23 this.callback = callback 24 } 25 26 async fire(key: string) { 27 this.callback(key) 28 } 29 30 public static getInstance(): DynamicLoader { 31 if (!DynamicLoader.instance) { 32 DynamicLoader.instance = new DynamicLoader(); 33 } 34 return DynamicLoader.instance; 35 } 36}