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/*
* 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();
}
}
}
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