content: /*
   *     Copyright (C) 2016  Merbin J Anselm <merbinjanselm@gmail.com>
   *
   *     This program is free software; you can redistribute it and/or modify
   *     it under the terms of the GNU General Public License as published by
   *     the Free Software Foundation; either version 2 of the License, or
   *     (at your option) any later version.
   *
   *     This program is distributed in the hope that it will be useful,
   *     but WITHOUT ANY WARRANTY; without even the implied warranty of
   *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *     GNU General Public License for more details.
   *
   *     You should have received a copy of the GNU General Public License along
   *     with this program; if not, write to the Free Software Foundation, Inc.,
   *     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   */
  
  package in.blogspot.anselmbros.torchie.main.manager.device.input.proximity;
  
  import android.content.Context;
  import android.hardware.Sensor;
  import android.hardware.SensorEvent;
  import android.hardware.SensorEventListener;
  import android.hardware.SensorManager;
  import android.view.InputEvent;
  
  import in.blogspot.anselmbros.torchie.main.manager.device.input.InputDevice;
  import in.blogspot.anselmbros.torchie.main.manager.timer.CountTimer;
  import in.blogspot.anselmbros.torchie.main.manager.timer.CountTimerListener;
  import in.blogspot.anselmbros.torchie.utils.Constants;
  
  import static android.content.Context.SENSOR_SERVICE;
  
  /**
   * Created by Merbin J Anselm on 04-Feb-17.
   */
  
  public class ProximitySensor extends InputDevice implements SensorEventListener, CountTimerListener {
      public static final String TYPE = Constants.ID_DEVICE_INPUT_PROXIMITY;
      private static ProximitySensor mInstance;
      private CountTimer mCountTimer;
  
      private int signal;
  
      private ProximitySensor(Context context) {
          super(context);
          this.deviceType = TYPE;
      }
  
      public static ProximitySensor getInstance(Context context) {
          if (mInstance == null) {
              mInstance = new ProximitySensor(context);
          }
          return mInstance;
      }
  
      @Override
      protected boolean setEvent(InputEvent event) {
          return false;
      }
  
      @Override
      public void getStatusRequest() {
          final SensorManager mSensorManager = (SensorManager) this.mContext.getSystemService(SENSOR_SERVICE);
          final Sensor proximitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
          mSensorManager.registerListener(this, proximitySensor, SensorManager.SENSOR_DELAY_FASTEST);
      }
  
      @Override
      public void onSensorChanged(SensorEvent event) {
          signal = (event.values[0] == 0) ? INP_HIGH : INP_LOW;
          if (signal == INP_HIGH) {
              if (mCountTimer != null) {
                  mCountTimer.cancel();
              }
              final SensorManager mSensorManager = (SensorManager) this.mContext.getSystemService(SENSOR_SERVICE);
              mSensorManager.unregisterListener(this);
              this.updateCurrentSignal(signal);
          } else {
              mCountTimer = new CountTimer("ProximitySensorResponse", 0.3f, this);
              mCountTimer.start();
          }
      }
  
      @Override
      public void onAccuracyChanged(Sensor sensor, int accuracy) {
  
      }
  
      @Override
      public void onCountEnd(String id) {
          final SensorManager mSensorManager = (SensorManager) this.mContext.getSystemService(SENSOR_SERVICE);
          mSensorManager.unregisterListener(this);
          this.updateCurrentSignal(signal);
      }
  }
  