/* MultipleEvents2.java
 *
 * This program illustrates one way to handle multiple events in a single program - by
 * having a single listener that checks the command associated with the event to
 * decide what to do.  The GUI consists of a window that can be drawn in one of three
 * colors, and three buttons that can be used to change the color
 *
 * Copyright (c) 2000, 2004 - Russell C. Bjork
 */
 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MultipleEvents2 extends JFrame implements ActionListener
{
	// Constructor - create the GUI
	
	public MultipleEvents2()
    { 
      	super("MultipleEvents Demo #2");
      	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		// Add the buttons - in their own panel
		
        JPanel buttonPanel = new JPanel();
        JButton redButton = new JButton("Red");
        redButton.addActionListener(this);
        buttonPanel.add(redButton);
        JButton greenButton = new JButton("Green");
        greenButton.addActionListener(this);
        buttonPanel.add(greenButton);
        JButton blueButton = new JButton("Blue");
        blueButton.addActionListener(this);
        buttonPanel.add(blueButton);
        getContentPane().add(buttonPanel, BorderLayout.SOUTH);
        
        setSize(300, 200);
    }
      
    // Action listener
    
    public void actionPerformed(ActionEvent event)
    { 
        String command = event.getActionCommand();
     	if (command.equals("Red"))
      		getContentPane().setBackground(Color.red);
      	else if (command.equals("Green"))
      		getContentPane().setBackground(Color.green);
      	else if (command.equals("Blue"))
      		getContentPane().setBackground(Color.blue);
      	repaint();
    }
    
    // Main program - Create the GUI and let it do the work 
   
    public static void main(String [] args)
    { 
    	new MultipleEvents2().setVisible(true); 
    }
}