1/* 2 * Copyright (c) 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 16import type { AsyncCallback } from '../../common/AsyncCallback'; 17import type { MediaDataSource } from './MediaDataSource'; 18import { Log } from '../../../utils/Log'; 19import { TraceControllerUtils } from '../../../utils/TraceControllerUtils'; 20 21const TAG: string = 'common_GetItemIndexCallback'; 22 23export class GetItemIndexCallback implements AsyncCallback<number> { 24 source: MediaDataSource; 25 requestTime: number; 26 indexNotifyCallback: Function; 27 28 constructor(source: MediaDataSource, indexNotifyCallback: Function) { 29 this.source = source; 30 this.requestTime = Date.now(); 31 this.indexNotifyCallback = indexNotifyCallback; 32 TraceControllerUtils.startTraceWithTaskId('getMediaItemIndex', this.requestTime); 33 } 34 35 callback(index: number): void { 36 TraceControllerUtils.finishTraceWithTaskId('getMediaItemIndex', this.requestTime); 37 Log.info(TAG, `GetItemIndex finish: index=${index}`); 38 this.indexNotifyCallback(index); 39 } 40}