1 /* 2 * Copyright (C) 2019 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.car; 18 19 import android.car.Car; 20 import android.content.Context; 21 22 import androidx.annotation.VisibleForTesting; 23 24 import com.android.systemui.dagger.SysUISingleton; 25 26 import java.util.ArrayList; 27 import java.util.List; 28 29 import javax.inject.Inject; 30 31 /** Provides a common connection to the car service that can be shared. */ 32 @SysUISingleton 33 public class CarServiceProvider { 34 35 private final Context mContext; 36 private final List<CarServiceOnConnectedListener> mListeners = new ArrayList<>(); 37 private Car mCar; 38 39 @Inject CarServiceProvider(Context context)40 public CarServiceProvider(Context context) { 41 mContext = context; 42 mCar = Car.createCar(mContext, /* handler= */ null, Car.CAR_WAIT_TIMEOUT_DO_NOT_WAIT, 43 (car, ready) -> { 44 mCar = car; 45 46 synchronized (mListeners) { 47 for (CarServiceOnConnectedListener listener : mListeners) { 48 if (ready) { 49 listener.onConnected(mCar); 50 } 51 } 52 } 53 }); 54 } 55 56 @VisibleForTesting CarServiceProvider(Context context, Car car)57 public CarServiceProvider(Context context, Car car) { 58 mContext = context; 59 mCar = car; 60 } 61 62 /** 63 * Let's other components hook into the connection to the car service. If we're already 64 * connected to the car service, the callback is immediately triggered. 65 */ addListener(CarServiceOnConnectedListener listener)66 public void addListener(CarServiceOnConnectedListener listener) { 67 if (mCar.isConnected()) { 68 listener.onConnected(mCar); 69 } 70 mListeners.add(listener); 71 } 72 73 /** 74 * Listener which is triggered when Car Service is connected. 75 */ 76 public interface CarServiceOnConnectedListener { 77 /** This will be called when the car service has successfully been connected. */ onConnected(Car car)78 void onConnected(Car car); 79 } 80 } 81