import java.awt.*;
import java.awt.event.*;
import java.awt.*;
import java.applet.Applet;
//

public class Lesson3a extends Applet implements ActionListener{
    Image walsh[];
    Button front, top, left, right;
    WalshView view;  // WalshView is an inner class
    Font f1;

    public void init () {
	walsh = new Image[4];
	// First load up the images
	for(int i = 0; i < 4; i++) 
	    walsh[i] = getImage(getDocumentBase(),"pic"+i+".jpg");
	// First generate the GUI objects with initial states
	front = new Button( "+");
	top = new Button("Mug Shot Project");
	left = new Button("<");
	right = new Button(">");
	view = new WalshView(0);
 	// Set the font on the GUI
	f1 = new Font("TimesRoman",Font.PLAIN,16);
	front.setFont(f1);
	top.setFont(f1);
	left.setFont(f1);
	right.setFont(f1);
   // Configure the appearance of the GUI
	setLayout(new BorderLayout() );
	add("North",top);
	add("Center",view);
	add("West",left);
	add("East",right);
	add("South",front);
    // Connect up the event handling
	front.addActionListener(this);
	top.addActionListener(this);
	right.addActionListener(this);
	left.addActionListener(this);
    }
    public void actionPerformed(ActionEvent e)
    {
	String command = e.getActionCommand();
	if(command == "+") {
	    view.image = 0;
	    view.repaint();
	}
	if(command == "<") {
	    view.image = 1;
	    view.repaint();
	}
	if(command == ">") {
	    view.image = 2;
	    view.repaint();
	}
	if(command == "Mug Shot Project") {
	    view.image = 3;
	    view.repaint();
	}
    }
    public class WalshView extends Canvas {
	int image;
	public WalshView(int i) {
	    image = i;

	}
	public void paint(Graphics g) {
		
	    g.drawImage(walsh[image],0,0,this);
	}
    }
}