| /* |
| * Copyright (C) 2015 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 android.support.car; |
| |
| import android.content.Context; |
| import android.os.Handler; |
| |
| /** |
| * CarServiceLoader is the abstraction for loading different types of car service. |
| * @hide |
| */ |
| public abstract class CarServiceLoader { |
| |
| private final Context mContext; |
| private final CarConnectionCallbackProxy mCallback; |
| private final Handler mEventHandler; |
| |
| public CarServiceLoader(Context context, CarConnectionCallbackProxy callback, Handler handler) { |
| mContext = context; |
| mCallback = callback; |
| mEventHandler = handler; |
| } |
| |
| public abstract void connect() throws IllegalStateException; |
| public abstract void disconnect(); |
| public abstract boolean isConnected(); |
| |
| @Car.ConnectionType |
| public abstract int getCarConnectionType() throws CarNotConnectedException; |
| |
| /** |
| * Retrieves a manager object for a specified Car*Manager. |
| * @param serviceName One of the android.car.Car#*_SERVICE constants. |
| * @return An instance of the request manager. Null if the manager is not supported on the |
| * current vehicle. |
| * @throws CarNotConnectedException if the connection to the car service has been lost. |
| */ |
| public abstract Object getCarManager(String serviceName) throws CarNotConnectedException; |
| |
| protected Context getContext() { |
| return mContext; |
| } |
| |
| protected CarConnectionCallbackProxy getConnectionCallback() { |
| return mCallback; |
| } |
| |
| protected Handler getEventHandler() { |
| return mEventHandler; |
| } |
| |
| /** |
| * Wrapper for CarConnectionCallback which does not return a {@link android.support.car.Car} |
| * object. |
| */ |
| public abstract static class CarConnectionCallbackProxy { |
| |
| /** |
| * Called when the Car has been connected. Does not guarantee the car is still connected |
| * while this callback is running, so {@link CarNotConnectedException}s may still be |
| * thrown from {@link Car} method calls. |
| */ |
| public abstract void onConnected(); |
| /** |
| * Called when the Car has been disconnected. |
| */ |
| public abstract void onDisconnected(); |
| } |
| } |