1/*
2 * Copyright (c) 2023 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
16/**
17 * @file
18 * @kit AbilityKit
19 */
20
21import type AppStateData from './AppStateData';
22
23/**
24 * The app foreground state observer.
25 *
26 * @syscap SystemCapability.Ability.AbilityRuntime.Core
27 * @systemapi
28 * @since 11
29 */
30export default class AppForegroundStateObserver {
31  /**
32   * Will be called when foreground or background application changed.
33   *
34   * @param { AppStateData } appStateData - State changed application info.
35   * @syscap SystemCapability.Ability.AbilityRuntime.Core
36   * @systemapi
37   * @since 11
38   */
39  onAppStateChanged(appStateData: AppStateData): void;
40}
41