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 type { AsyncCallback } from '../../common/AsyncCallback'; 17import { MediaItem } from './MediaItem'; 18import { MediaDataSource } from './MediaDataSource'; 19import { Log } from '../../../utils/Log'; 20import { TraceControllerUtils } from '../../../utils/TraceControllerUtils'; 21 22const TAG: string = 'common_GetItemsCallback'; 23 24export class GetItemsCallback implements AsyncCallback<MediaItem[]> { 25 source: MediaDataSource; 26 requestTime: number; 27 start: number; 28 29 constructor(source: MediaDataSource, start: number) { 30 this.source = source; 31 this.requestTime = Date.now(); 32 this.start = start; 33 TraceControllerUtils.startTraceWithTaskId('getMediaItems', this.requestTime); 34 } 35 36 callback(assets: MediaItem[], dataAlbumUri?: string): void { 37 TraceControllerUtils.finishTraceWithTaskId('getMediaItems', this.requestTime); 38 if (this.source?.isInvalidData(this.source?.getAlbumUri(), dataAlbumUri)) { 39 Log.error(TAG, 'GetItemsCallback callback isInvalidData:this.albumUri:' + this.source?.getAlbumUri() + ' dataAlbumUri:' + dataAlbumUri); 40 return; 41 } 42 Log.info(TAG, `took ${Date.now() - this.requestTime} milliseconds to load data: ${assets.length}`); 43 this.source.updateMediaData(this.requestTime, this.start, assets); 44 } 45}