1 /*
2  * Copyright (C) 2022 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 distributed under the
11  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
12  * KIND, either express or implied. See the License for the specific language governing
13  * permissions and limitations under the License.
14  */
15 package com.android.systemui.unfold.compat
16 
17 import com.android.systemui.unfold.updates.FoldProvider
18 import com.android.systemui.unfold.updates.screen.ScreenStatusProvider
19 import com.android.systemui.unfold.updates.screen.ScreenStatusProvider.ScreenListener
20 import java.util.concurrent.Executor
21 
22 class SizeScreenStatusProvider(
23     private val foldProvider: FoldProvider,
24     private val executor: Executor
25 ) : ScreenStatusProvider {
26 
27     private val listeners: MutableList<ScreenListener> = arrayListOf()
28     private val callback = object : FoldProvider.FoldCallback {
onFoldUpdatednull29         override fun onFoldUpdated(isFolded: Boolean) {
30             if (!isFolded) {
31                 listeners.forEach { it.onScreenTurnedOn() }
32             }
33         }
34     }
35 
startnull36     fun start() {
37         foldProvider.registerCallback(
38             callback,
39             executor
40         )
41     }
42 
stopnull43     fun stop() {
44         foldProvider.unregisterCallback(callback)
45     }
46 
addCallbacknull47     override fun addCallback(listener: ScreenListener) {
48         listeners.add(listener)
49     }
50 
removeCallbacknull51     override fun removeCallback(listener: ScreenListener) {
52         listeners.remove(listener)
53     }
54 }
55