/*
**  Xbox360 USB Gamepad Userspace Driver
**  Copyright (C) 2011 Ingo Ruhnke <grumbel@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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "buttonfilter/click_button_filter.hpp"

#include <cassert>
#include <string>

ClickButtonFilter::ClickButtonFilter(Mode mode)
    : m_mode(mode), m_last_value(false) {}

bool ClickButtonFilter::filter(bool value) {
  if (m_last_value != value) {
    m_last_value = value;

    switch (m_mode) {
      case kPress:
        if (value) {
          return true;
        } else {
          return false;
        }
        break;

      case kRelease:
        if (!value) {
          return true;
        } else {
          return false;
        }
        break;

      case kBoth:
        return true;
        break;

      default:
        assert(!"never reached");
        break;
    }
  } else {
    return false;
  }
}

std::string ClickButtonFilter::str() const {
  switch (m_mode) {
    case kPress:
      return "press";

    case kRelease:
      return "release";

    case kBoth:
      return "both";

    default:
      assert(!"never reached");
      break;
  }
}

/* EOF */
