1 /* 2 * Copyright (C) 2015 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 android.support.car; 18 19 import android.content.ComponentName; 20 import android.content.Context; 21 import android.content.ServiceConnection; 22 import android.os.Handler; 23 import android.os.IBinder; 24 import android.os.Looper; 25 import android.os.Message; 26 import android.support.car.content.pm.CarPackageManagerEmbedded; 27 import android.support.car.hardware.CarSensorManagerEmbedded; 28 import android.support.car.media.CarAudioManagerEmbedded; 29 import android.support.car.navigation.CarNavigationManagerEmbedded; 30 31 import java.util.LinkedList; 32 33 /** 34 * Default CarServiceLoader for system with built-in car service (=embedded). 35 * @hide 36 */ 37 public class CarServiceLoaderEmbedded extends CarServiceLoader { 38 39 private final ServiceConnection mServiceConnection = new ServiceConnection() { 40 41 @Override 42 public void onServiceConnected(ComponentName name, IBinder service) { 43 getConnectionListener().onServiceConnected(name); 44 } 45 46 @Override 47 public void onServiceDisconnected(ComponentName name) { 48 getConnectionListener().onServiceDisconnected(name); 49 } 50 }; 51 52 private final android.car.Car mCar; 53 private final LinkedList<CarConnectionListener> mCarConnectionListeners = 54 new LinkedList<>(); 55 private final CallbackHandler mHandler; 56 CarServiceLoaderEmbedded(Context context, ServiceConnectionListener listener, Looper looper)57 public CarServiceLoaderEmbedded(Context context, ServiceConnectionListener listener, 58 Looper looper) { 59 super(context, listener, looper); 60 mCar = android.car.Car.createCar(context, mServiceConnection, looper); 61 mHandler = new CallbackHandler(looper); 62 } 63 64 @Override connect()65 public void connect() throws IllegalStateException { 66 mCar.connect(); 67 } 68 69 @Override disconnect()70 public void disconnect() { 71 mCar.disconnect(); 72 } 73 74 @Override isConnectedToCar()75 public boolean isConnectedToCar() { 76 // for embedded, connected to service means connected to car. 77 return mCar.isConnected(); 78 } 79 80 @Override getCarConnectionType()81 public int getCarConnectionType() throws CarNotConnectedException { 82 return mCar.getCarConnectionType(); 83 } 84 85 @Override registerCarConnectionListener(final CarConnectionListener listener)86 public void registerCarConnectionListener(final CarConnectionListener listener) 87 throws CarNotConnectedException { 88 synchronized (this) { 89 mCarConnectionListeners.add(listener); 90 } 91 // car service connection is checked when this is called. So just dispatch it. 92 mHandler.dispatchCarConnectionCall(listener, getCarConnectionType()); 93 } 94 95 @Override unregisterCarConnectionListener(CarConnectionListener listener)96 public void unregisterCarConnectionListener(CarConnectionListener listener) { 97 synchronized (this) { 98 mCarConnectionListeners.remove(listener); 99 } 100 } 101 102 @Override getCarManager(String serviceName)103 public Object getCarManager(String serviceName) throws CarNotConnectedException { 104 Object manager; 105 try { 106 manager = mCar.getCarManager(serviceName); 107 } catch (android.car.CarNotConnectedException e) { 108 throw new CarNotConnectedException(e); 109 } 110 111 if (manager == null) { 112 return null; 113 } 114 // For publicly available versions, return wrapper version. 115 switch (serviceName) { 116 case Car.AUDIO_SERVICE: 117 return new CarAudioManagerEmbedded(manager); 118 case Car.SENSOR_SERVICE: 119 return new CarSensorManagerEmbedded(manager); 120 case Car.INFO_SERVICE: 121 return new CarInfoManagerEmbedded(manager); 122 case Car.APP_CONTEXT_SERVICE: 123 return new CarAppContextManagerEmbedded(manager); 124 case Car.PACKAGE_SERVICE: 125 return new CarPackageManagerEmbedded(manager); 126 case Car.CAR_NAVIGATION_SERVICE: 127 return new CarNavigationManagerEmbedded(manager); 128 default: 129 return manager; 130 } 131 } 132 133 private static class CallbackHandler extends Handler { 134 135 private static final int MSG_DISPATCH_CAR_CONNECTION = 0; 136 CallbackHandler(Looper looper)137 private CallbackHandler(Looper looper) { 138 super(looper); 139 } 140 dispatchCarConnectionCall(CarConnectionListener listener, int connectionType)141 private void dispatchCarConnectionCall(CarConnectionListener listener, int connectionType) { 142 sendMessage(obtainMessage(MSG_DISPATCH_CAR_CONNECTION, connectionType, 0, listener)); 143 } 144 145 @Override handleMessage(Message msg)146 public void handleMessage(Message msg) { 147 switch (msg.what) { 148 case MSG_DISPATCH_CAR_CONNECTION: 149 CarConnectionListener listener = (CarConnectionListener) msg.obj; 150 listener.onConnected(msg.arg1); 151 break; 152 } 153 } 154 } 155 } 156