| /* |
| * Copyright (C) 2013 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 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.server.location; |
| |
| import com.android.server.ServiceWatcher; |
| |
| import android.Manifest; |
| import android.content.Context; |
| import android.hardware.location.IFusedLocationHardware; |
| import android.location.IFusedProvider; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| /** |
| * Proxy that helps bind GCore FusedProvider implementations to the Fused Hardware instances. |
| * |
| * @hide |
| */ |
| public final class FusedProxy { |
| private final String TAG = "FusedProxy"; |
| private final ServiceWatcher mServiceWatcher; |
| private final FusedLocationHardwareSecure mLocationHardware; |
| |
| /** |
| * Constructor of the class. |
| * This is private as the class follows a factory pattern for construction. |
| * |
| * @param context The context needed for construction. |
| * @param handler The handler needed for construction. |
| * @param locationHardware The instance of the Fused location hardware assigned to the proxy. |
| */ |
| private FusedProxy( |
| Context context, |
| Handler handler, |
| IFusedLocationHardware locationHardware, |
| int overlaySwitchResId, |
| int defaultServicePackageNameResId, |
| int initialPackageNameResId) { |
| mLocationHardware = new FusedLocationHardwareSecure( |
| locationHardware, |
| context, |
| Manifest.permission.LOCATION_HARDWARE); |
| Runnable newServiceWork = new Runnable() { |
| @Override |
| public void run() { |
| bindProvider(mLocationHardware); |
| } |
| }; |
| |
| // prepare the connection to the provider |
| mServiceWatcher = new ServiceWatcher( |
| context, |
| TAG, |
| "com.android.location.service.FusedProvider", |
| overlaySwitchResId, |
| defaultServicePackageNameResId, |
| initialPackageNameResId, |
| newServiceWork, |
| handler); |
| } |
| |
| /** |
| * Creates an instance of the proxy and binds it to the appropriate FusedProvider. |
| * |
| * @param context The context needed for construction. |
| * @param handler The handler needed for construction. |
| * @param locationHardware The instance of the Fused location hardware assigned to the proxy. |
| * |
| * @return An instance of the proxy if it could be bound, null otherwise. |
| */ |
| public static FusedProxy createAndBind( |
| Context context, |
| Handler handler, |
| IFusedLocationHardware locationHardware, |
| int overlaySwitchResId, |
| int defaultServicePackageNameResId, |
| int initialPackageNameResId) { |
| FusedProxy fusedProxy = new FusedProxy( |
| context, |
| handler, |
| locationHardware, |
| overlaySwitchResId, |
| defaultServicePackageNameResId, |
| initialPackageNameResId); |
| |
| // try to bind the Fused provider |
| if (!fusedProxy.mServiceWatcher.start()) { |
| return null; |
| } |
| |
| return fusedProxy; |
| } |
| |
| /** |
| * Helper function to bind the FusedLocationHardware to the appropriate FusedProvider instance. |
| * |
| * @param locationHardware The FusedLocationHardware instance to use for the binding operation. |
| */ |
| private void bindProvider(IFusedLocationHardware locationHardware) { |
| IFusedProvider provider = IFusedProvider.Stub.asInterface(mServiceWatcher.getBinder()); |
| |
| if (provider == null) { |
| Log.e(TAG, "No instance of FusedProvider found on FusedLocationHardware connected."); |
| return; |
| } |
| |
| try { |
| provider.onFusedLocationHardwareChange(locationHardware); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString()); |
| } |
| } |
| } |