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 { TimelineDataSource } from './TimelineDataSource';
17import { BroadCast, Constants, Log } from '@ohos/common';
18import { Constants as TimeLineConstants } from './Constants';
19
20const TAG: string = 'timeline_TimelineDataSourceManager';
21
22export class TimelineDataSourceManager {
23  private broadCast: BroadCast;
24  private dataSource: TimelineDataSource;
25
26  private constructor() {
27    Log.info(TAG, 'constructor');
28    this.broadCast = new BroadCast();
29    this.dataSource = new TimelineDataSource(Constants.DEFAULT_SLIDING_WIN_SIZE, this.broadCast);
30    this.dataSource.registerTimelineObserver();
31  }
32
33  public static getInstance(): TimelineDataSourceManager {
34    if (AppStorage.Get(TimeLineConstants.APP_KEY_GROUP_DATA_SOURCE_MANAGER) == null) {
35      AppStorage.setOrCreate(TimeLineConstants.APP_KEY_GROUP_DATA_SOURCE_MANAGER, new TimelineDataSourceManager());
36    }
37    return AppStorage.Get(TimeLineConstants.APP_KEY_GROUP_DATA_SOURCE_MANAGER);
38  }
39
40  public getBroadCast(): BroadCast {
41    return this.broadCast;
42  }
43
44  public getDataSource(): TimelineDataSource {
45    return this.dataSource;
46  }
47}