1/* 2 * Copyright (c) 2025 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 { common } from '@kit.AbilityKit'; 17import CounterLock from './CounterLock'; 18import { HiLog } from './HiLog'; 19import Singleton from './Singleton'; 20import { UIContext } from '@kit.ArkUI'; 21 22const TAG: string = 'UIContextUtil'; 23 24export default class UIContextUtil { 25 private static singletonInstance: Singleton<UIContextUtil> = new Singleton<UIContextUtil>(() => new UIContextUtil()); 26 private static uiContext: UIContext | undefined = undefined; 27 private static locker: CounterLock = new CounterLock(); 28 29 public static getInstance(): UIContextUtil { 30 return UIContextUtil.singletonInstance.getInstance(); 31 } 32 33 public getUIContext( 34 context: common.UIAbilityContext | common.UIExtensionContext | common.ServiceExtensionContext 35 ): UIContext | undefined { 36 HiLog.info(TAG, 'Getting UIContext.'); 37 if (!UIContextUtil.uiContext) { 38 UIContextUtil.locker.acquire(); 39 try { 40 if (!UIContextUtil.uiContext) { 41 HiLog.info(TAG, 'UIContext is undefined. Creating UIContext without window.'); 42 UIContextUtil.uiContext = UIContext.createUIContextWithoutWindow(context) as UIContext; 43 } 44 } catch(error) { 45 HiLog.wrapError(TAG, error, 'Failed to create UIContext without window'); 46 } finally { 47 UIContextUtil.locker.release(); 48 } 49 } 50 return UIContextUtil.uiContext; 51 } 52}