/*
    * Copyright 2002 - 2007 JEuclid, http://jeuclid.sf.net
    * 
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /* $Id: AboutDialog.java,v 9fe6e50a4648 2008/05/23 10:08:31 maxberger $ */
  
  package net.sourceforge.jeuclid.app.mathviewer;
  
  import java.awt.BorderLayout;
  import java.awt.Font;
  import java.awt.Frame;
  import java.awt.event.KeyAdapter;
  import java.awt.event.KeyEvent;
  
  import javax.swing.ImageIcon;
  import javax.swing.JDialog;
  import javax.swing.JLabel;
  import javax.swing.JOptionPane;
  import javax.swing.JPanel;
  import javax.swing.SwingConstants;
  
  import net.sourceforge.jeuclid.LayoutContext;
  
  /**
   * About Dialog for MathViewer.
   * 
   * @version $Revision: 9fe6e50a4648 $
   */
  public final class AboutDialog extends JDialog {
  
      private static final int LARGE_FONT = 14;
  
      private static final int SMALL_FONT = 12;
  
      private static final String ABOUT_FONT = "SansSerif";
  
      private static final long serialVersionUID = 1L;
  
      private JPanel jContentPane;
  
      private JLabel iconLabel;
  
      private JLabel jeuclidLabel;
  
      private JLabel wwwLabel;
  
      /**
       * @param owner
       *            Owner for this frame.
       */
      public AboutDialog(final Frame owner) {
          super(owner);
          this.initialize();
      }
  
      /**
       * This method initializes this
       * 
       * @return void
       */
      private void initialize() {
          this.setModal(true);
          this.setResizable(false);
          this.setContentPane(this.getJContentPane());
          this.setTitle(Messages.getString("MathViewer.aboutWindowTitle")); //$NON-NLS-1$
          this.addKeyListener(new KeyAdapter() {
              @Override
              public void keyPressed(final KeyEvent e) {
                  if (e.getKeyCode() == KeyEvent.VK_V && e.isAltDown()) {
                      JOptionPane.showMessageDialog(AboutDialog.this,
                              "Version: "
                                      + LayoutContext.class.getPackage()
                                              .getImplementationVersion());
                  }
              }
          });
      }
  
      /**
       * This method initializes jContentPane
       * 
       * @return javax.swing.JPanel
       */
      private JPanel getJContentPane() {
          if (this.jContentPane == null) {
              this.wwwLabel = new JLabel();
              this.wwwLabel.setText(" http://jeuclid.sourceforge.net ");
             this.wwwLabel.setFont(new Font(AboutDialog.ABOUT_FONT,
                     Font.PLAIN, AboutDialog.SMALL_FONT));
             this.wwwLabel.setHorizontalAlignment(SwingConstants.CENTER);
             this.jeuclidLabel = new JLabel();
             this.jeuclidLabel.setText("JEuclid MathViewer");
             this.jeuclidLabel.setHorizontalAlignment(SwingConstants.CENTER);
             this.jeuclidLabel.setFont(new Font(AboutDialog.ABOUT_FONT,
                     Font.BOLD, AboutDialog.LARGE_FONT));
             this.iconLabel = new JLabel();
             this.iconLabel.setHorizontalAlignment(SwingConstants.CENTER);
             this.iconLabel.setIcon(new ImageIcon(this.getClass().getResource(
                     "/icons/jeuclid_128x128.png")));
             this.jContentPane = new JPanel();
             this.jContentPane.setLayout(new BorderLayout());
             this.jContentPane.add(this.iconLabel, BorderLayout.NORTH);
             this.jContentPane.add(this.jeuclidLabel, BorderLayout.CENTER);
             this.jContentPane.add(this.wwwLabel, BorderLayout.SOUTH);
         }
         return this.jContentPane;
     }
 
 }