1 /*
2  * Copyright (C) 2021 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.settings.brightness
18 
19 import com.android.systemui.statusbar.policy.BrightnessMirrorController
20 import com.android.systemui.statusbar.policy.BrightnessMirrorController.BrightnessMirrorListener
21 
22 class BrightnessMirrorHandler(private val brightnessController: MirroredBrightnessController) {
23 
24     private var mirrorController: BrightnessMirrorController? = null
25 
26     private val brightnessMirrorListener = BrightnessMirrorListener { updateBrightnessMirror() }
27 
28     fun onQsPanelAttached() {
29         mirrorController?.addCallback(brightnessMirrorListener)
30     }
31 
32     fun onQsPanelDettached() {
33         mirrorController?.removeCallback(brightnessMirrorListener)
34     }
35 
36     fun setController(controller: BrightnessMirrorController) {
37         mirrorController?.removeCallback(brightnessMirrorListener)
38         mirrorController = controller
39         mirrorController?.addCallback(brightnessMirrorListener)
40         updateBrightnessMirror()
41     }
42 
43     private fun updateBrightnessMirror() {
44         mirrorController?.let { brightnessController.setMirror(it) }
45     }
46 }