content: /*
   *     Copyright (C) 2017 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.
   */
  
  /*
   *     Copyright (C) 2017 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.
   */
  
  /*
   *     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.key.volume.rocker;
  
  import android.content.Context;
  import android.view.InputEvent;
  
  import in.blogspot.anselmbros.torchie.main.manager.device.input.event.VolumeKeyEvent;
  import in.blogspot.anselmbros.torchie.main.manager.device.input.key.volume.VolumeKeyDevice;
  import in.blogspot.anselmbros.torchie.utils.Constants;
  
  /**
   * Created by Merbin J Anselm on 04-Feb-17.
   */
  
  public class VolumeKeyRocker extends VolumeKeyDevice {
      public static final String TYPE = Constants.ID_DEVICE_INPUT_VOLUMEKEY_ROCKER;
  
      private final static int MAX_BUFFER_SIZE = 6;
      private int[] buffer;
      private int current_ptr;
  
      public VolumeKeyRocker(Context context) {
          super(context);
          this.deviceType = TYPE;
          buffer = new int[MAX_BUFFER_SIZE];
      }
  
      @Override
      public boolean setEvent(InputEvent event) {
          VolumeKeyEvent volumeKeyEvent = (VolumeKeyEvent) event;
          if (volumeKeyEvent.getVolumeKeyEventType() == VolumeKeyEvent.VOLUME_KEY_EVENT_ROCKER && volumeKeyEvent.isVolumeKeyEvent()) {
              buffer[current_ptr] = volumeKeyEvent.getCurrentValue();
              current_ptr++;
              if (current_ptr == MAX_BUFFER_SIZE) {
                  current_ptr = 0;
              }
              return this.isActionModePerformed();
          }
          return false;
      }
  
      @Override
      protected boolean isKeyComboPerformed() {
          boolean keyComboPerformed = false;
          for (int i = 0; i < current_ptr; i++) {
              if (i > 0) {
                  int a = buffer[i], b = buffer[i - 1];
                  if ((a == -1 && b == 1) || (a == 1 && b == -1)) {
                      this.clearBuffer();
                      keyComboPerformed = true;
                  }
              }
          }
          if (keyComboPerformed) {
              this.updateCurrentSignal(INP_TRIGGER);
          }
          return keyComboPerformed;
      }
  
      private void clearBuffer() {
          buffer = new int[MAX_BUFFER_SIZE];
          current_ptr = 0;
      }
  }
  