/** Driver.java for image-list program.  Our frame will consist
 *  of a split pane.  And in this pane, we'll have 2 panels:
 *  a list-panel on the left listing the file names, and an
 *  "image" panel on the right showing the image the user has
 *  selected.
 *  It takes a little finesse to get the image to appear exactly
 *  how you want.  For instance, in main() we specify the image
 *  panel's size to be big enough to hold the largest picture.
 *  And we set a border layout so that the image can be vertically
 *  centered.  (We could have used a box layout and put glue above
 *  and below the image label.)  To make the image horizontally
 *  centered, we need to call setHorizontalAlignment() in the
 *  JLabel (not JPanel) class.
 */
import java.awt.*;
import javax.swing.*;

public class Driver
{
  public static void main(String [] args)
  {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JLabel imageLabel = new JLabel();
    JPanel imagePanel = new JPanel();
    imagePanel.setPreferredSize(new Dimension(700,500));
    imagePanel.setLayout(new BorderLayout());
    imagePanel.add(imageLabel, BorderLayout.CENTER);
    imageLabel.setHorizontalAlignment(SwingConstants.CENTER);

    ListPanel imageList = new ListPanel(imageLabel);
    JSplitPane pane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
                                     imageList, imagePanel);
    frame.getContentPane().add(pane);
    frame.pack();
    frame.show();
  }
}