| /* |
| * Copyright (C) 2019 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.statusbar.car; |
| |
| import android.annotation.NonNull; |
| import android.car.Car; |
| import android.car.CarNotConnectedException; |
| import android.car.hardware.power.CarPowerManager; |
| import android.car.hardware.power.CarPowerManager.CarPowerStateListener; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.ServiceConnection; |
| import android.os.IBinder; |
| import android.util.Log; |
| |
| /** |
| * Helper class for connecting to the {@link CarPowerManager} and listening for power state changes. |
| */ |
| public class PowerManagerHelper { |
| public static final String TAG = "PowerManagerHelper"; |
| |
| private final Context mContext; |
| private final CarPowerStateListener mCarPowerStateListener; |
| |
| private Car mCar; |
| private CarPowerManager mCarPowerManager; |
| |
| private final ServiceConnection mCarConnectionListener = |
| new ServiceConnection() { |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| Log.d(TAG, "Car Service connected"); |
| try { |
| mCarPowerManager = (CarPowerManager) mCar.getCarManager(Car.POWER_SERVICE); |
| if (mCarPowerManager != null) { |
| mCarPowerManager.setListener(mCarPowerStateListener); |
| } else { |
| Log.e(TAG, "CarPowerManager service not available"); |
| } |
| } catch (CarNotConnectedException e) { |
| Log.e(TAG, "Car not connected", e); |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| destroyCarPowerManager(); |
| } |
| }; |
| |
| PowerManagerHelper(Context context, @NonNull CarPowerStateListener listener) { |
| mContext = context; |
| mCarPowerStateListener = listener; |
| } |
| |
| /** |
| * Connect to Car service. |
| */ |
| void connectToCarService() { |
| mCar = Car.createCar(mContext, mCarConnectionListener); |
| if (mCar != null) { |
| mCar.connect(); |
| } |
| } |
| |
| /** |
| * Disconnects from Car service. |
| */ |
| void disconnectFromCarService() { |
| if (mCar != null) { |
| mCar.disconnect(); |
| } |
| } |
| |
| private void destroyCarPowerManager() { |
| if (mCarPowerManager != null) { |
| mCarPowerManager.clearListener(); |
| } |
| } |
| } |