/*******************************************************************************
 * This file is part of logisim-evolution.
 *
 *   logisim-evolution 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.
 *
 *   logisim-evolution 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 logisim-evolution.  If not, see <http://www.gnu.org/licenses/>.
 *
 *   Original code by Carl Burch (http://www.cburch.com), 2011.
 *   Subsequent modifications by :
 *     + Haute École Spécialisée Bernoise
 *       http://www.bfh.ch
 *     + Haute École du paysage, d'ingénierie et d'architecture de Genève
 *       http://hepia.hesge.ch/
 *     + Haute École d'Ingénierie et de Gestion du Canton de Vaud
 *       http://www.heig-vd.ch/
 *   The project is currently maintained by :
 *     + REDS Institute - HEIG-VD
 *       Yverdon-les-Bains, Switzerland
 *       http://reds.heig-vd.ch
 *******************************************************************************/

package com.cburch.logisim.tools.key;

import java.awt.event.KeyEvent;

import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.Direction;

public class DirectionConfigurator implements KeyConfigurator, Cloneable {
	private Attribute<Direction> attr;
	private int modsEx;

	public DirectionConfigurator(Attribute<Direction> attr, int modifiersEx) {
		this.attr = attr;
		this.modsEx = modifiersEx;
	}

	@Override
	public DirectionConfigurator clone() {
		try {
			return (DirectionConfigurator) super.clone();
		} catch (CloneNotSupportedException e) {
			e.printStackTrace();
			return null;
		}
	}

	public KeyConfigurationResult keyEventReceived(KeyConfigurationEvent event) {
		if (event.getType() == KeyConfigurationEvent.KEY_PRESSED) {
			KeyEvent e = event.getKeyEvent();
			if (e.getModifiersEx() == modsEx) {
				Direction value = null;
				switch (e.getKeyCode()) {
				case KeyEvent.VK_UP:
					value = Direction.NORTH;
					break;
				case KeyEvent.VK_DOWN:
					value = Direction.SOUTH;
					break;
				case KeyEvent.VK_LEFT:
					value = Direction.WEST;
					break;
				case KeyEvent.VK_RIGHT:
					value = Direction.EAST;
					break;
				}
				if (value != null) {
					event.consume();
					return new KeyConfigurationResult(event, attr, value);
				}
			}
		}
		return null;
	}
}