1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.systemui.mediaprojection.taskswitcher.data.repository
18 
19 import android.app.ActivityManager.RunningTaskInfo
20 import android.os.IBinder
21 import kotlinx.coroutines.flow.Flow
22 
23 /** Repository responsible for retrieving data related to running tasks. */
24 interface TasksRepository {
25 
26     /**
27      * Tries to find a [RunningTaskInfo] with a matching window container token. Returns `null` when
28      * no matching task was found.
29      */
30     suspend fun findRunningTaskFromWindowContainerToken(
31         windowContainerToken: IBinder
32     ): RunningTaskInfo?
33 
34     /**
35      * Emits a stream of [RunningTaskInfo] that have been moved to the foreground.
36      *
37      * Note: when subscribing for the first time, it will not immediately emit the current
38      * foreground task. Only after a change in foreground task has occurred.
39      */
40     val foregroundTask: Flow<RunningTaskInfo>
41 }
42