| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.systemui.car.volume; |
| |
| import android.car.Car; |
| import android.car.media.CarAudioManager; |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.os.Handler; |
| import android.util.Log; |
| |
| import com.android.systemui.R; |
| import com.android.systemui.SystemUI; |
| import com.android.systemui.car.CarServiceProvider; |
| import com.android.systemui.dagger.qualifiers.Main; |
| import com.android.systemui.volume.VolumeDialogComponent; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| |
| import dagger.Lazy; |
| |
| /** The entry point for controlling the volume ui in cars. */ |
| @Singleton |
| public class VolumeUI extends SystemUI { |
| |
| private static final String TAG = "VolumeUI"; |
| private final Resources mResources; |
| private final Handler mMainHandler; |
| private final CarServiceProvider mCarServiceProvider; |
| private final Lazy<VolumeDialogComponent> mVolumeDialogComponentLazy; |
| |
| private final CarAudioManager.CarVolumeCallback mVolumeChangeCallback = |
| new CarAudioManager.CarVolumeCallback() { |
| @Override |
| public void onGroupVolumeChanged(int zoneId, int groupId, int flags) { |
| if (mVolumeDialogComponent == null) { |
| mMainHandler.post(() -> { |
| mVolumeDialogComponent = mVolumeDialogComponentLazy.get(); |
| mVolumeDialogComponent.register(); |
| }); |
| mCarAudioManager.unregisterCarVolumeCallback(mVolumeChangeCallback); |
| } |
| } |
| |
| @Override |
| public void onMasterMuteChanged(int zoneId, int flags) { |
| // ignored |
| } |
| }; |
| |
| private boolean mEnabled; |
| private CarAudioManager mCarAudioManager; |
| private VolumeDialogComponent mVolumeDialogComponent; |
| |
| @Inject |
| public VolumeUI( |
| Context context, |
| @Main Resources resources, |
| @Main Handler mainHandler, |
| CarServiceProvider carServiceProvider, |
| Lazy<VolumeDialogComponent> volumeDialogComponentLazy |
| ) { |
| super(context); |
| mResources = resources; |
| mMainHandler = mainHandler; |
| mCarServiceProvider = carServiceProvider; |
| mVolumeDialogComponentLazy = volumeDialogComponentLazy; |
| } |
| |
| @Override |
| public void start() { |
| boolean enableVolumeUi = mResources.getBoolean(R.bool.enable_volume_ui); |
| mEnabled = enableVolumeUi; |
| if (!mEnabled) return; |
| |
| mCarServiceProvider.addListener(car -> { |
| if (mCarAudioManager != null) { |
| return; |
| } |
| |
| mCarAudioManager = (CarAudioManager) car.getCarManager(Car.AUDIO_SERVICE); |
| Log.d(TAG, "Registering mVolumeChangeCallback."); |
| // This volume call back is never unregistered because CarStatusBar is |
| // never destroyed. |
| mCarAudioManager.registerCarVolumeCallback(mVolumeChangeCallback); |
| }); |
| } |
| |
| @Override |
| protected void onConfigurationChanged(Configuration newConfig) { |
| super.onConfigurationChanged(newConfig); |
| if (!mEnabled) return; |
| if (mVolumeDialogComponent != null) { |
| mVolumeDialogComponent.onConfigurationChanged(newConfig); |
| } |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| pw.print("mEnabled="); pw.println(mEnabled); |
| if (!mEnabled) return; |
| if (mVolumeDialogComponent != null) { |
| mVolumeDialogComponent.dump(fd, pw, args); |
| } |
| } |
| } |