// ActionEventDemo.java

/**
 * Illustrate how Action Events work
 * @author Henry H. Leitner
 * @version  Last modified on March 6, 2009
 */

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

class ActionEventDemo
{
    public static void main (String [] args)
    {
	   ActionEventFrame a = new ActionEventFrame("My Frame!", 400, 300);
	   a.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);
	   a.setVisible(true);
    }
}

class ActionEventFrame extends JFrame
{
    JButton addButton = new JButton("Click to ADD");
    JButton subtractButton = new JButton("Click to SUBTRACT");
    JTextField tf = new JTextField ("blah blah blah ...");
    
    public ActionEventFrame(String name, int h, int w)
    {
        setTitle(name);
        setSize(h, w);
        Font f = new Font("Times", Font.BOLD, 24);
        addButton.setFont (f);
        subtractButton.setFont (f);
        addButton.setForeground (Color.RED);
        subtractButton.setForeground (Color.ORANGE.darker());
        Container c = getContentPane();
        ButtonListener bl = new ButtonListener();
        addButton.addActionListener ( bl );
        subtractButton.addActionListener ( bl );
        tf.setFont(f);
        tf.setForeground(Color.BLUE);
        tf.setHorizontalAlignment(JTextField.CENTER);
	
        c.add(tf, BorderLayout.CENTER); 
        c.add(subtractButton, BorderLayout.SOUTH);
        c.add(addButton, BorderLayout.NORTH);
        addWindowListener(new WindowChatterBox());
    }
    
    
    // an inner class
    class ButtonListener implements ActionListener 
    { 
        int counter = 0;
        public void actionPerformed(ActionEvent e) 
        { 
            if ( e.getSource() == addButton ) counter++;
            else if ( e.getSource() == subtractButton) counter-- ;
            tf.setText(" " + counter);
	}
    } 
    
    // another inner class
    class WindowChatterBox implements WindowListener
    {
        public void windowClosing(WindowEvent e)    
	    { 
	      System.out.println("Window is in the process of CLOSING!");  
	    }  
        
        public void windowActivated(WindowEvent e)  
	    {
	      System.out.println("Window got ACTIVATED!"); 
	    } 
        
        public void windowClosed(WindowEvent e)     
	    { 
	      System.out.println("Window got CLOSED!"); 
	    } 
        
        public void windowDeactivated(WindowEvent e)
	    { 
	       System.out.println("Window got DEACTIVATED!"); 
	    } 
	
        public void windowDeiconified(WindowEvent e)
	    { 
	       System.out.println("Window got DE-ICONIFIED!"); 
	    } 
        
        public void windowIconified(WindowEvent e) 
	    { 
	       System.out.println("Window got ICONIFIED!");
	    } 
	
        public void windowOpened(WindowEvent e) 
	    { 
	       System.out.println("Window got OPENED!"); 
	    }
    }
    
}