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1/**
2 * Copyright (c) 2024 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 window from '@ohos.window';
17import { BusinessError } from '@ohos.base';
18import { GlobalContext } from '../common/GlobalContext';
19import type UIAbilityContext from 'application/UIAbilityContext';
20import UIExtensionContentSession from '@ohos.app.ability.UIExtensionContentSession';
21
22const TAG: string = 'PreventScreenshotsModel';
23
24export default class PreventScreenshotsModel {
25  private static sInstance: PreventScreenshotsModel;
26
27  public static getInstance(): PreventScreenshotsModel {
28    if (PreventScreenshotsModel.sInstance == null) {
29      PreventScreenshotsModel.sInstance = new PreventScreenshotsModel();
30    }
31    return PreventScreenshotsModel.sInstance;
32  }
33
34  PreventScreenshots(flag: boolean, session: UIExtensionContentSession | undefined) {
35    let isPrivacyMode: boolean = flag;
36    if (session !== undefined) {
37      session.setWindowPrivacyMode(isPrivacyMode);
38      return;
39    }
40
41    let windowClass: window.Window | undefined = undefined;
42    let context: UIAbilityContext = GlobalContext.getContext().getCmContext();
43    if (context === undefined) {
44      console.error(TAG, 'context is undefined!');
45      return;
46    }
47
48    window.getLastWindow(context).then((window) => {
49      windowClass = window;
50      console.info(TAG,'Success in obtaining the top window data');
51      windowClass.setWindowPrivacyMode(isPrivacyMode).catch((err: BusinessError) => {
52        console.error(TAG, 'setWindowPrivacyMode failed: ' + JSON.stringify(err));
53      })
54    }).catch((err: BusinessError) => {
55      console.info(TAG + 'getLastWindow failed: ' + JSON.stringify(err));
56    })
57  }
58}