/**
* @(#)TrafficLight.java
*
* TrafficLight Applet application
*
* @author
* @version 1.00 2007/3/8
*/

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


public class TrafficLight extends Applet implements ActionListener {
    
    //declarations
    private Button btnRed, btnYellow, btnGreen;
    private JPanel panel1;
    //setting the buttons to false
    private boolean btnRedClicked = false;
    private boolean btnYellowClicked = false;
    private boolean btnGreenClicked = false;
    private Image car;
        
    public void init()
    {
        //load image of car
        car=getImage(getDocumentBase(),"car.jpg");
        //sets up the layout for the panel
        setLayout(new BorderLayout());
        //sets up the panel
        panel1 = new JPanel();
        //sets up and adds the buttons to the panel
        btnGreen = new Button("Go");
        btnYellow = new Button("Wait");
        btnRed = new Button("Stop");
        panel1.add(btnRed);
        panel1.add(btnYellow);
        panel1.add(btnGreen);
        //adding panel to border layout
        add(panel1, BorderLayout.NORTH);
    }

    public void paint(Graphics g)
        {
        //set background color
        setBackground(Color.cyan);
        //make traffic light
        g.setColor(Color.black);
        g.fillRect(260,50,80,160);
        
        if(btnRedClicked == true)
        {
        //do the following if the stop button is clicked
        g.drawImage(car,40,270,220,100,this);    
        g.setColor(Color.red);
        g.fillOval(280,60,40,40);
        g.setColor(Color.black);
        g.fillOval(280,110,40,40);
        g.fillOval(280,160,40,40);
        btnRedClicked = false;
        }
    
        if(btnYellowClicked == true)
        {
        //do the following if the wait button is clicked
        g.drawImage(car,375,270,220,100,this);    
        g.setColor(Color.yellow);
        g.fillOval(280,110,40,40);
        g.setColor(Color.black);
        g.fillOval(280,60,40,40);
        g.fillOval(280,160,40,40);
        btnYellowClicked = false;
        }
                
        if(btnGreenClicked == true)
        {
        //do the following if the wait button is clicked
        g.drawImage(car,300,270,220,100,this);    
        g.setColor(Color.green);
        g.fillOval(280,160,40,40);
        g.setColor(Color.black);
        g.fillOval(280,110,40,40);
        g.fillOval(280,60,40,40);
        btnGreenClicked = false;
        }
                
    }
    public void actionPerformed(ActionEvent event)
    {
        //creating the action from the press of each button
        //displays the Green light
        if(event.getSource() == btnGreen)
        {
        btnGreenClicked = true;
        repaint();
        }//end of btnGreen
        
        //displays the Yellow light    
        if(event.getSource() == btnYellow)
        {
        btnYellowClicked = true;
        repaint();
        }//end of btnYellow
    
        //displays the Red light
        if(event.getSource() == btnRed)
        {
        btnRedClicked = true;
        repaint();
        }//end btnRed if
    }//end actionPerformed
        
}

public void actionPerformed(ActionEvent e){
   if(e.getActionCommand().equals("Go")){
       //action
   }else if(e.getActionCommand().equals("Wait")){
       //action
   }
}