1/**
2 * Copyright (c) 2021-2022 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 */
15import { CommonConstants } from '@ohos/common';
16import { RecentsModeConfig } from '@ohos/common';
17
18/**
19 * Recent missions layout mode configuration.
20 */
21export default class RecentModeFeatureConfig extends RecentsModeConfig {
22
23  protected constructor() {
24    super();
25  }
26
27  /**
28   * The json string corresponding to the current configuration.
29   */
30  protected getPersistConfigJson(): string {
31    const persistConfig = JSON.parse(super.getPersistConfigJson());
32    return JSON.stringify(persistConfig);
33  }
34
35  /**
36   * Get recent mode configuration instance.
37   *
38   * @return {object} RecentModeFeatureConfig singleton
39   */
40  static getInstance(): RecentModeFeatureConfig {
41    if (globalThis.RecentModeFeatureConfigInstance == null) {
42      globalThis.RecentModeFeatureConfigInstance = new RecentModeFeatureConfig();
43      globalThis.RecentModeFeatureConfigInstance.initConfig();
44    }
45    return globalThis.RecentModeFeatureConfigInstance;
46  }
47
48  /**
49   * Init recent mode configuration.
50   */
51  initConfig(): void {
52    super.initConfig();
53  }
54
55  /**
56   * Get recent mode configuration level.
57   *
58   * @return {string} feature-level layout configuration
59   */
60  getConfigLevel(): string {
61    return CommonConstants.LAYOUT_CONFIG_LEVEL_FEATURE;
62  }
63}