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

import java.awt.event.*;

public class Countdown extends JPanel implements Runnable{

    private Thread th;
    private JLabel p;
    private boolean partito=false;
    private boolean pausa;


	public Countdown(){
	       setBackground(Color.white);
	       setPreferredSize(new Dimension(500,200));
	       JFrame f = new JFrame("Countdown");
	       p = new JLabel("Contiamo....");
	       add(p);
	       f.setLayout(new BorderLayout());
	       JPanel t = new JPanel();
	       t.setPreferredSize(new Dimension (500,100));
	       t.setBackground(Color.red);

	       JButton bottonestart = new JButton("Start");
	       ActionListener listenstart = new ActionListener(){
	    	   public void actionPerformed(ActionEvent ae){
	                          if(!partito){
	                        	  start();
	                        	  System.out.println("è partito il countdown...");
	                        	  partito=true;
	                          }

	    	   }
	       };
	       bottonestart.addActionListener(listenstart);
	       t.add(bottonestart);

	       JButton bottonepausa = new JButton("Pausa");
	       ActionListener listenpausa = new ActionListener(){
	    	   public void actionPerformed(ActionEvent ae){
	    	                       if(partito){
	    	                    	   stop();
	    	                       }
	    	                    	   partito=false;

	    	   }
	       };
	       bottonepausa.addActionListener(listenpausa);
	       t.add(bottonepausa);

	       JButton bottonecolore = new JButton("Colore");
	       ActionListener listencolore = new ActionListener(){
	    	 public void actionPerformed(ActionEvent ae){
	    		                     //cambio colore del pannello
	    		 Color colore = new Color((int)(Math.random()*255),(int)(Math.random()*255),(int)(Math.random()*255));
	    		 setBackground(colore);
	    	 }
	       };
	       bottonecolore.addActionListener(listencolore);
	       t.add(bottonecolore);

	       f.add(this, BorderLayout.CENTER);
	       f.add(t, BorderLayout.SOUTH);
	       f.pack();
	       f.setVisible(true);
	       f.setResizable(false);
	       f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


	}

	public void stop(){
		System.out.println("Stai bloccando il thread"+th);
		th = null;

	}

	public boolean isRunning(){


		return th != null;

	}



	public void start(){

		if(!isRunning()){

			th = new Thread(this);
			System.out.println("Sta partendo il thread"+th);
			th.start();

		}



	}


	public void run(){


		while(isRunning()){						// se il thread Ë partito

			for(int i=10; i >= 0; i --){
			      p.setText("siamo al numero .... "+i);
			      try{

						Thread.sleep(1000);

					}catch(InterruptedException e){

						e.printStackTrace();
				}

			}

			p.setText("Il countdown del thread "+th+" è finito :D");
			partito=false;
			stop();
		}

	}





	public static void main(String[] args) {

new Countdown();
	}

}