import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.JMenu;
import javax.swing.JDialog;
import javax.swing.JMenuItem;
import javax.swing.JMenuBar;
import java.io.*;

public class TextEditor extends WindowAdapter implements ActionListener {

    final JLabel label = new JLabel("Text Editor");
    final static String LOOKANDFEEL = null;
    public static JFrame frame = new JFrame( "Text Editor" );
    
    public void actionPerformed(ActionEvent e) { // gets events
	String num = e.getActionCommand();
	if( num.equals( "NEW" ) ) {
	    NewDoc();
	}
	else if( num.equals( "OPEN" ) ) {
	    OldDoc();
	}
	else if( num.equals( "QUIT" ) ) {
	    frame.dispose();
	}
    }

    public void NewDoc() {
	TextWindow txw = new TextWindow();
	txw.NewDoc();
    }

    public void OldDoc() {
	TextWindow txw = new TextWindow();
	txw.OldDoc();
    }
    
    public Component createMain() {
        JButton button = new JButton("New Document"); // name of button
        button.setActionCommand("NEW"); // name of command
        button.addActionListener(this); // adds listener
        label.setLabelFor(button);
	JButton button2 = new JButton("Open Document");
        button2.setActionCommand("OPEN");
        button2.addActionListener(this);
        label.setLabelFor(button2);
	JButton button3 = new JButton("Quit Document");
        button3.setActionCommand("QUIT");
        button3.addActionListener(this);
        label.setLabelFor(button3);

        /*
         * An easy way to put space between a top-level container
         * and its contents is to put the contents in a JPanel
         * that has an "empty" border.
         */
        JPanel pane = new JPanel(new GridLayout(0, 1));
        pane.setBorder(BorderFactory.createEmptyBorder(
                                        50, //top
                                        80, //left
                                        50, //bottom
                                        80) //right
                                        );
        pane.add(label);
	pane.add(button);
	pane.add(button2);
	pane.add(button3);

        return pane;
    }

    private static void initLookAndFeel() {
        String lookAndFeel = null;

        if (LOOKANDFEEL != null) {
            if (LOOKANDFEEL.equals("Metal")) {
                lookAndFeel = UIManager.getCrossPlatformLookAndFeelClassName();
            } else if (LOOKANDFEEL.equals("System")) {
                lookAndFeel = UIManager.getSystemLookAndFeelClassName();
            } else if (LOOKANDFEEL.equals("Motif")) {
                lookAndFeel = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
            } else if (LOOKANDFEEL.equals("GTK+")) { //new in 1.4.2
                lookAndFeel = "com.sun.java.swing.plaf.gtk.GTKLookAndFeel";
            } else {
                System.err.println("Unexpected value of LOOKANDFEEL specified: "
                                   + LOOKANDFEEL);
                lookAndFeel = UIManager.getCrossPlatformLookAndFeelClassName();
            }

            try {
                UIManager.setLookAndFeel(lookAndFeel);
            } catch (ClassNotFoundException e) {
                System.err.println("Couldn't find class for specified look and feel:"
                                   + lookAndFeel);
                System.err.println("Did you include the L&F library in the class path?");
                System.err.println("Using the default look and feel.");
            } catch (UnsupportedLookAndFeelException e) {
                System.err.println("Can't use the specified look and feel ("
                                   + lookAndFeel
                                   + ") on this platform.");
                System.err.println("Using the default look and feel.");
            } catch (Exception e) {
                System.err.println("Couldn't get specified look and feel ("
                                   + lookAndFeel
                                   + "), for some reason.");
                System.err.println("Using the default look and feel.");
                e.printStackTrace();
            }
        }
    }

    private static void createAndShowGUI() {
	initLookAndFeel();

        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);

        //Create and set up the window.
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	TextEditor app = new TextEditor();
        Component contents = app.createMain();
        frame.getContentPane().add(contents, BorderLayout.CENTER);

        //Display the window.
        frame.pack();
	frame.setLocation(100,100); //put it at 100, 100
        frame.setVisible(true);
    }

    public static void main(String[] args) {

	Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();

	javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}