content: /*
   * Copyright (C) 2012 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.os;
  
  import android.annotation.UnsupportedAppUsage;
  import android.content.Context;
  import android.media.AudioAttributes;
  import android.util.Log;
  
  /**
   * Vibrator implementation that controls the main system vibrator.
   *
   * @hide
   */
  public class SystemVibrator extends Vibrator {
      private static final String TAG = "Vibrator";
  
      private final IVibratorService mService;
      private final Binder mToken = new Binder();
  
      @UnsupportedAppUsage
      public SystemVibrator() {
          mService = IVibratorService.Stub.asInterface(ServiceManager.getService("vibrator"));
      }
  
      @UnsupportedAppUsage
      public SystemVibrator(Context context) {
          super(context);
          mService = IVibratorService.Stub.asInterface(ServiceManager.getService("vibrator"));
      }
  
      @Override
      public boolean hasVibrator() {
          if (mService == null) {
              Log.w(TAG, "Failed to vibrate; no vibrator service.");
              return false;
          }
          try {
              return mService.hasVibrator();
          } catch (RemoteException e) {
          }
          return false;
      }
  
      @Override
      public boolean hasAmplitudeControl() {
          if (mService == null) {
              Log.w(TAG, "Failed to check amplitude control; no vibrator service.");
              return false;
          }
          try {
              return mService.hasAmplitudeControl();
          } catch (RemoteException e) {
          }
          return false;
      }
  
      @Override
      public void vibrate(int uid, String opPkg, VibrationEffect effect,
              String reason, AudioAttributes attributes) {
          if (mService == null) {
              Log.w(TAG, "Failed to vibrate; no vibrator service.");
              return;
          }
          try {
              mService.vibrate(uid, opPkg, effect, attributes, reason, mToken);
          } catch (RemoteException e) {
              Log.w(TAG, "Failed to vibrate.", e);
          }
      }
  
      @Override
      public void cancel() {
          if (mService == null) {
              return;
          }
          try {
              mService.cancelVibrate(mToken);
          } catch (RemoteException e) {
              Log.w(TAG, "Failed to cancel vibration.", e);
          }
      }
  }
  