//: bangbean/BangBean.java

// A graphical Bean.

package bangbean;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.util.*;

public class

BangBean extends JPanel implements Serializable {

private int xm, ym;

private int cSize = 20; // Circle size

private String text = "Bang!";

private int fontSize = 48;

private Color tColor = Color.RED;

private ActionListener actionListener;

public BangBean() {

addMouseListener(new ML());

addMouseMotionListener(new MML());

}

public int getCircleSize() { return cSize; }

public void setCircleSize(int newSize) {

cSize = newSize;

}

public String getBangText() { return text; }

public void setBangText(String newText) {

text = newText;

}

public int getFontSize() { return fontSize; }

public void setFontSize(int newSize) {

fontSize = newSize;

}

public Color getTextColor() { return tColor; }

public void setTextColor(Color newColor) {

tColor = newColor;

}

public void paintComponent(Graphics g) {

super.paintComponent(g);

g.setColor(Color.BLACK);

g.drawOval(xm - cSize/2, ym - cSize/2, cSize, cSize);

}

// This is a unicast listener, which is

// the simplest form of listener management:

public void addActionListener(ActionListener l)

throws TooManyListenersException {

if(actionListener != null)

throw new TooManyListenersException();

actionListener = l;

}

public void removeActionListener(ActionListener l) {

actionListener = null;

}

class ML extends MouseAdapter {

public void mousePressed(MouseEvent e) {

Graphics g = getGraphics();

g.setColor(tColor);

g.setFont(

new Font("TimesRoman", Font.BOLD, fontSize));

int width = g.getFontMetrics().stringWidth(text);

g.drawString(text, (getSize().width - width) /2,

getSize().height/2);

g.dispose();

// Call the listener's method:

if(actionListener != null)

actionListener.actionPerformed(

new ActionEvent(BangBean.this,

ActionEvent.ACTION_PERFORMED, null));

}

}

class MML extends MouseMotionAdapter {

public void mouseMoved(MouseEvent e) {

xm = e.getX();

ym = e.getY();

repaint();

}

}

public Dimension getPreferredSize() {

return new Dimension(200, 200);

}

} ///:~