import java.awt.*;
import java.awt.event.*;
import java.io.*;

/**
 * @author dgreen
 * Demonstrate the use of a FileDiaglog and a FileName filter
 * 
 * See bug notice why this is not that useful down below in "accept()"
 * method.
 */
public class FileDialogExample
	extends Frame
	implements ActionListener, WindowListener, FilenameFilter {

	/**
	 * Constructor for FileDialogExample.
	 */
	public FileDialogExample() {
		super();
		
		FileDialog fdOpen = new FileDialog(this, "Choose a File");
		fdOpen.setDirectory(".");
		fdOpen.setFile( "" );
		// bug:  this filter only "lasts" for current directory 
		//       in Linux and fails to work at all in Windows
		//       as documented in JDK documentation -- bummer
		fdOpen.setFilenameFilter( this );
		fdOpen.show();
	}


	public static void main(String[] args) {
		FileDialogExample theApp = new FileDialogExample();
	}

    public boolean accept(File dir, String name) {
		File file = new File(dir, name);
        if(file.isDirectory()) {
            return true;
        } else if(file.isFile() && 
            (name.endsWith(".java"))) {
            return true;
        } else {
            return false;
        }
    }

	/**
	 * @see java.awt.event.ActionListener#actionPerformed(ActionEvent)
	 */
	public void actionPerformed(ActionEvent arg0) {
	}

	/**
	 * @see java.awt.event.WindowListener#windowOpened(WindowEvent)
	 */
	public void windowOpened(WindowEvent arg0) {
	}

	/**
	 * @see java.awt.event.WindowListener#windowClosing(WindowEvent)
	 */
	public void windowClosing(WindowEvent arg0) {
		dispose();
		System.exit(0);
	}

	/**
	 * @see java.awt.event.WindowListener#windowClosed(WindowEvent)
	 */
	public void windowClosed(WindowEvent arg0) {
	}

	/**
	 * @see java.awt.event.WindowListener#windowIconified(WindowEvent)
	 */
	public void windowIconified(WindowEvent arg0) {
	}

	/**
	 * @see java.awt.event.WindowListener#windowDeiconified(WindowEvent)
	 */
	public void windowDeiconified(WindowEvent arg0) {
	}

	/**
	 * @see java.awt.event.WindowListener#windowActivated(WindowEvent)
	 */
	public void windowActivated(WindowEvent arg0) {
	}

	/**
	 * @see java.awt.event.WindowListener#windowDeactivated(WindowEvent)
	 */
	public void windowDeactivated(WindowEvent arg0) {
	}
}