/*  NavigationPanel - The class for the game navigation.  Copyright (C) 2003 The Java-Chess team <info@java-chess.de>  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.*///////////////////////////////////////////////////////////////////////////////package de.java_chess.javaChess.renderer2d;import javax.swing.JPanel;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.image.BufferedImage;import java.net.URL;import javax.swing.BorderFactory;import javax.swing.JButton;import javax.swing.ImageIcon;import java.awt.*;///////////////////////////////////////////////////////////////////////////////** * Class for the display of engine output */public class NavigationPanel extends JPanel implements ActionListener{		/**		 * The button for one ply (=half move) back		 */		JButton jbBack = new JButton();		/**		 * The button for jump to the beginning of the game		 */		JButton jbStart = new JButton();		/**		 * The button for one ply (=half move) back		 */		JButton jbForward = new JButton();		/**		 * The button for jump to the end of the game		 */		JButton jbEnd = new JButton();    /**     * The layout     */    private GridBagLayout gridBagNavigation = new GridBagLayout();    /**     * Standardconstructor     */    public NavigationPanel()		{			super();			try			{	      jbInit();			}			catch(Exception e)			{	      e.printStackTrace();			}		}    /**     * Construction a la JBuilder to be able to use the JBuilder designer     *     * @throws Exception     */    private void jbInit() throws Exception		{			this.setLayout(gridBagNavigation);			jbBack.setBackground(Color.white);    jbBack.setToolTipText("one ply back");			jbStart.setBackground(Color.white);    jbStart.setToolTipText("to start position");			jbForward.setBackground(Color.white);    jbForward.setToolTipText("one ply forward");			jbEnd.setBackground(Color.white);    jbEnd.setToolTipText("to end position");				URL urlBack = getClass().getResource("images/back03.gif");				Image imBack = Toolkit.getDefaultToolkit().getImage( urlBack );        jbBack.setIcon( new ImageIcon( imBack ));				URL urlStart = getClass().getResource("images/start03.gif");				Image imStart = Toolkit.getDefaultToolkit().getImage( urlStart );        jbStart.setIcon( new ImageIcon( imStart ));				URL urlForward = getClass().getResource("images/forward03.gif");				Image imForward = Toolkit.getDefaultToolkit().getImage( urlForward );        jbForward.setIcon( new ImageIcon( imForward ));				URL urlEnd = getClass().getResource("images/end03.gif");				Image imEnd = Toolkit.getDefaultToolkit().getImage( urlEnd );        jbEnd.setIcon( new ImageIcon( imEnd ));//			jbBack.setIcon( new ImageIcon( Toolkit.getDefaultToolkit().getImage( new URL( "jar:file:javaChess.jar!/de/java_chess/javaChess/renderer2d/images/back02.gif"))));//			jbStart.setIcon( new ImageIcon( Toolkit.getDefaultToolkit().getImage( new URL( "jar:file:javaChess.jar!/de/java_chess/javaChess/renderer2d/images/start02.gif"))));//			jbForward.setIcon( new ImageIcon( Toolkit.getDefaultToolkit().getImage( new URL( "jar:file:javaChess.jar!/de/java_chess/javaChess/renderer2d/images/forward02.gif"))));//			jbEnd.setIcon( new ImageIcon( Toolkit.getDefaultToolkit().getImage( new URL( "jar:file:javaChess.jar!/de/java_chess/javaChess/renderer2d/images/end02.gif"))));			jbBack.addActionListener( this );			jbStart.addActionListener( this );			jbForward.addActionListener( this );			jbEnd.addActionListener( this );			this.add(jbStart,     new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0							,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));			this.add(jbBack,        new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0							,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));			this.add(jbForward,       new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0							,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));			this.add(jbEnd,     new GridBagConstraints(3, 0, 1, 1, 0.0, 0.0							,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));    }/** * Moves one half move back in the game history */		private void moveOnePlyBack()		{			/** @todo still to implement *///			System.out.println( "Einen Halbzug zur點(diǎn)k" );		}/** * Moves to the beginning of the game */		private void moveToStart()		{			/** @todo still to implement *///			System.out.println( "Zum Partieanfang" );		}/** * Moves one half move forward in the game */		private void moveOnePlyForward()		{			/** @todo still to implement */			System.out.println( "Einen Halbzug vor" );		}/** * Moves to the end position of the game */		private void moveToEnd()		{			/** @todo still to implement */			System.out.println( "Zum Partieende" );		}/** * React on mouseclick */		public void actionPerformed( ActionEvent ae )		{			if ( ae.getSource().equals( jbStart ))				 moveToStart();			if ( ae.getSource().equals( jbBack ))				 moveOnePlyBack();			if ( ae.getSource().equals( jbForward ))				 moveOnePlyForward();			if ( ae.getSource().equals( jbEnd ))				 moveToEnd();		}}