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.dock
18 
19 import com.android.systemui.common.coroutine.ConflatedCallbackFlow
20 import kotlinx.coroutines.channels.awaitClose
21 import kotlinx.coroutines.flow.Flow
22 
23 /**
24  * Retrieves whether or not the device is docked according to DockManager. Emits a starting value
25  *  of isDocked.
26  */
DockManagernull27 fun DockManager.retrieveIsDocked(): Flow<Boolean> =
28     ConflatedCallbackFlow.conflatedCallbackFlow {
29         val callback = DockManager.DockEventListener { trySend(isDocked) }
30         addListener(callback)
31         trySend(isDocked)
32 
33         awaitClose { removeListener(callback) }
34     }