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

public class RainGame
{
    public static Raindrops raindrops;  
    public static RainView rainView;
    
    private static class RainMouseListener implements MouseListener  {
	public void mouseExited(MouseEvent e) {}
	public void mouseEntered(MouseEvent e) {}
	public void mousePressed(MouseEvent e) {}
	public void mouseReleased(MouseEvent e) {}
	public void mouseClicked(MouseEvent e) {
	    System.out.println("click: " + e.getX() + "," + e.getY() );
	    raindrops.setIndicator(); }
    }
    
    
    private static class RainKeyListener implements KeyListener 
    {
	public void keyReleased(KeyEvent e) {}
	public void keyTyped(KeyEvent e) {}
	public void keyPressed(KeyEvent e)
	{
	    System.out.println(" keypress");
	    raindrops.handleKey(e);
	    rainView.repaint();
	}
    }
    
    private static class RainView extends JPanel
    {
	public RainView()
	{
	    super();
	    setPreferredSize(new Dimension(Raindrops.XSIZE, Raindrops.YSIZE));
	}
	
	/* implementation of a method inherited from JPanel */
	public void paintComponent(Graphics g)
	{
	    Graphics2D graphics2D;       // object containing 2D capabilities
	    super.paintComponent(g);     // ensure proper painting sequence
	    graphics2D = (Graphics2D)g;  // access graphics2D capabilities
	    graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 
					RenderingHints.VALUE_ANTIALIAS_ON);
	    raindrops.drawRain(graphics2D);
	}
    }
    
    static class RButtonListener implements ActionListener {
	public void actionPerformed(ActionEvent event) {
	    System.out.println("resetting\n");
	    raindrops.resetDrops(); } } 

    public static void main(String[] args)
    {
	JFrame mainFrame;
	Container contentPane;
	
	mainFrame = new JFrame("Some ugly example GUI code");
	contentPane = mainFrame.getContentPane();
	
	raindrops = new Raindrops();
	rainView = new RainView();
	
	contentPane.setLayout(new BorderLayout(5, 5));
	contentPane.add(rainView, BorderLayout.CENTER);

	JButton resetButton = new JButton("reset");
	contentPane.add(resetButton, BorderLayout.NORTH);
	resetButton.addActionListener(new RButtonListener());

	JSlider sliderella = new JSlider(JSlider.HORIZONTAL, 0, 10, 3);
	contentPane.add(sliderella, BorderLayout.SOUTH);
	// no listener yet for the slider
	 
	rainView.addKeyListener(new RainKeyListener());
	rainView.addMouseListener(new RainMouseListener());
	
	mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	mainFrame.setSize(raindrops.XSIZE,raindrops.YSIZE);
	mainFrame.setVisible(true);
	rainView.requestFocus();
	for (int i = 0; i < 100; i++) {
	    System.out.println("Starting step " + i); 
	    raindrops.nextTimeStep();
	    rainView.repaint();
	    rainView.requestFocus();  // to regain focus after a button click
	    try {
		Thread.sleep(500);  //  milliseconds = 1 second
	    } catch (Exception ex) {}
	}
    }
}