1/* 2 * Copyright (c) 2022 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 16import { Log } from '../../utils/Log'; 17import { BroadCast } from '../../utils/BroadCast'; 18import { Constants } from './Constants'; 19 20const TAG: string = 'common_BroadCastManager'; 21 22export class BroadCastManager { 23 // The global BroadCast of the application process. Event registration and destruction should be paired 24 private appBroadCast: BroadCast; 25 26 private constructor() { 27 Log.info(TAG, 'constructor'); 28 this.appBroadCast = new BroadCast(); 29 } 30 31 public static getInstance(): BroadCastManager { 32 if (AppStorage.get(Constants.APP_KEY_EVENT_BUS) == null) { 33 AppStorage.setOrCreate(Constants.APP_KEY_EVENT_BUS, new BroadCastManager()); 34 } 35 return AppStorage.get(Constants.APP_KEY_EVENT_BUS); 36 } 37 38 public getBroadCast(): BroadCast { 39 return this.appBroadCast; 40 } 41} 42