//Mousing2.java   generic mouse actions

import java.awt.*;
import java.awt.event.*;     //MouseAdapter MouseMotionAdapter
import javax.swing.*;

public class Mousing2 extends JApplet {
    
    int x, y;
    int xPrev, yPrev;
    int connectDots;

    public void init() {

	connectDots = JOptionPane.showConfirmDialog(null,"Connect the dots?",
						 "connect the dots?",
						 JOptionPane.YES_NO_OPTION);

	//incantation that responds to mouse click events:
	addMouseListener(
	    //anonymous inner class overrides mouseClicked.
	    //creates a $1 class file (which must be uploaded to web site)
	    new MouseAdapter() {
		public void mouseClicked( MouseEvent event) {
		    x = event.getX(); //gets X coord of mouse click event
		    y = event.getY();
		    //to determine which mouse button clicked:
		    if (event.getButton() == MouseEvent.BUTTON1)  //left
		        showStatus("Left ("+x+","+y+") BUTTON1");
		    else if (event.getButton() == MouseEvent.BUTTON2) //middle
			showStatus("Middle ("+x+","+y+") BUTTON2");
		    else if (event.getButton() == MouseEvent.BUTTON3) //right
			showStatus("Right ("+x+","+y+") BUTTON3");
		    repaint();   //will invoke paint
		}
	    }
	);

	//incantation that responds to mouse move events:
	addMouseMotionListener(
	     //anonymous inner class overrides mouseMoved
	     //creates a $2 class file which must be uploaded to web site
	       new MouseMotionAdapter() {
		   public void mouseMoved( MouseEvent event) {
		       showStatus("("+event.getX()+","+event.getY()+")");
		   }  //repaint for fun :)
	       }
	 );    
    }

    //without super.paint(g) does not clear the screen each call.
    public void paint ( Graphics g ) {

	g.setColor(Color.RED);
	g.fillOval(x-2,y-2,3,3);  //this point

	if (connectDots == JOptionPane.YES_OPTION) {
	    g.setColor(Color.BLACK);
	    if (xPrev != 0)   //only if not first point
		g.drawLine(x,y,xPrev,yPrev);  
	    xPrev = x;
	    yPrev = y;
	}
    }
}
/* moveCount  time or distance fires move event? */