//Mousing.java   generic mouse actions
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Mousing extends JApplet {
    
    int [] X;   //points clicked so far
    int [] Y;
    int numPoints=0;  //number of points so far
    int connectDots;

    public void init() {

	X = new int[1000];  //"limited" to 1000 points
	Y = new int[1000];

	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 uuploaded to web site
	    new MouseAdapter() {
		public void mouseClicked( MouseEvent event) {
		    int x = event.getX(); //gets X coord of mouse click event
		    int y = event.getY();
		    showStatus("("+x+","+y+")");
		    X[numPoints] = x;    //store it in array of points
		    Y[numPoints] = y;
		    numPoints++;    //one more point so far
		    repaint();
		}
	    }
	);

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


    public void paint ( Graphics g ) {
	super.paint( g );

	g.setColor(Color.RED);
	//display all points so far:
	if (connectDots == JOptionPane.YES_OPTION) {
	    g.fillOval(X[0]-2,Y[0]-2,3,3);  //first point
	    for (int i=1; i<numPoints; i++) {
		g.setColor(Color.RED);
		g.fillOval(X[i]-2,Y[i]-2,3,3);
		//line from previous to this one:
		g.setColor(Color.BLACK);
		g.drawLine(X[i-1],Y[i-1],X[i],Y[i]);  
	    }
	}
	else  //no connecting lines
	    for (int i=0; i<numPoints; i++)  
		g.fillOval(X[i]-2,Y[i]-2,3,3);
    }
}