content: /*
   * Copyright (C) 2014 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.server.location;
  
  import android.content.Context;
  import android.hardware.location.ActivityRecognitionHardware;
  import android.hardware.location.IActivityRecognitionHardwareClient;
  import android.hardware.location.IActivityRecognitionHardwareWatcher;
  import android.os.IBinder;
  import android.os.RemoteException;
  import android.util.Log;
  
  import com.android.server.FgThread;
  import com.android.server.ServiceWatcher;
  
  /**
   * Proxy class to bind GmsCore to the ActivityRecognitionHardware.
   *
   * @hide
   */
  public class ActivityRecognitionProxy {
  
      private static final String TAG = "ActivityRecognitionProxy";
  
      /**
       * Creates an instance of the proxy and binds it to the appropriate FusedProvider.
       *
       * @return An instance of the proxy if it could be bound, null otherwise.
       */
      public static ActivityRecognitionProxy createAndBind(
              Context context,
              boolean activityRecognitionHardwareIsSupported,
              ActivityRecognitionHardware activityRecognitionHardware,
              int overlaySwitchResId,
              int defaultServicePackageNameResId,
              int initialPackageNameResId) {
          ActivityRecognitionProxy activityRecognitionProxy = new ActivityRecognitionProxy(
                  context,
                  activityRecognitionHardwareIsSupported,
                  activityRecognitionHardware,
                  overlaySwitchResId,
                  defaultServicePackageNameResId,
                  initialPackageNameResId);
  
          if (activityRecognitionProxy.mServiceWatcher.start()) {
              return activityRecognitionProxy;
          } else {
              return null;
          }
      }
  
      private final ServiceWatcher mServiceWatcher;
      private final boolean mIsSupported;
      private final ActivityRecognitionHardware mInstance;
  
      private ActivityRecognitionProxy(
              Context context,
              boolean activityRecognitionHardwareIsSupported,
              ActivityRecognitionHardware activityRecognitionHardware,
              int overlaySwitchResId,
              int defaultServicePackageNameResId,
              int initialPackageNameResId) {
          mIsSupported = activityRecognitionHardwareIsSupported;
          mInstance = activityRecognitionHardware;
  
          mServiceWatcher = new ServiceWatcher(
                  context,
                  TAG,
                  "com.android.location.service.ActivityRecognitionProvider",
                  overlaySwitchResId,
                  defaultServicePackageNameResId,
                  initialPackageNameResId,
                  FgThread.getHandler()) {
              @Override
              protected void onBind() {
                  runOnBinder(ActivityRecognitionProxy.this::initializeService);
              }
          };
      }
  
      private void initializeService(IBinder binder) {
          try {
              String descriptor = binder.getInterfaceDescriptor();
  
              if (IActivityRecognitionHardwareWatcher.class.getCanonicalName().equals(
                      descriptor)) {
                  IActivityRecognitionHardwareWatcher watcher =
                          IActivityRecognitionHardwareWatcher.Stub.asInterface(binder);
                  if (mInstance != null) {
                      watcher.onInstanceChanged(mInstance);
                  }
              } else if (IActivityRecognitionHardwareClient.class.getCanonicalName()
                      .equals(descriptor)) {
                  IActivityRecognitionHardwareClient client =
                          IActivityRecognitionHardwareClient.Stub.asInterface(binder);
                  client.onAvailabilityChanged(mIsSupported, mInstance);
              } else {
                  Log.e(TAG, "Invalid descriptor found on connection: " + descriptor);
              }
          } catch (RemoteException e) {
              Log.w(TAG, e);
          }
      }
  }
  