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1/*
2 * Copyright (c) 2025 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 { AbilityConstant, UIAbility, Want } from '@kit.AbilityKit';
16import { hilog } from '@kit.PerformanceAnalysisKit';
17import { window } from '@kit.ArkUI';
18import { commonEventManager } from '@kit.BasicServicesKit';
19
20const DOMAIN = 0x0000;
21
22export default class SingletonAbility extends UIAbility {
23  private exitTask: number = 0;
24  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
25    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onCreate');
26    commonEventManager.publish('demo2_singleton_onCreate', {}, () => {});
27  }
28
29  onDestroy(): void {
30    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onDestroy');
31  }
32
33  onNewWant(want: Want, launchParam: AbilityConstant.LaunchParam): void {
34    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onNewWant');
35    commonEventManager.publish('demo2_singleton_onNewWant', {}, () => {});
36  }
37
38  onWindowStageCreate(windowStage: window.WindowStage): void {
39    // Main window is created, set main page for this ability
40    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onWindowStageCreate');
41
42    windowStage.loadContent('pages/Singleton', (err) => {
43      if (err.code) {
44        hilog.error(DOMAIN, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err));
45        return;
46      }
47      hilog.info(DOMAIN, 'testTag', 'Succeeded in loading the content.');
48    });
49  }
50
51  onWindowStageDestroy(): void {
52    // Main window is destroyed, release UI related resources
53    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onWindowStageDestroy');
54  }
55
56  onForeground(): void {
57    // Ability has brought to foreground
58    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onForeground');
59    if (this.exitTask !== 0) {
60      return;
61    }
62    this.exitTask = setTimeout(() => {
63      hilog.info(DOMAIN, 'testTag', '%{public}s', 'demo2 singleton terminateSelf');
64      commonEventManager.publish('demo2_singleton_Exit', {}, () => {
65        this.context.terminateSelf();
66      });
67    }, 500);
68  }
69
70  onBackground(): void {
71    // Ability has back to background
72    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onBackground');
73  }
74}
75