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

public class ButtonFill extends TextButton {
    private boolean buttonState = false; 
    
    public ButtonFill (Square square) {
	super (square, null, "Filled"); 
    }

    // We override this one
    public void actionPerformed (ActionEvent e) { 
	buttonState = ! buttonState; 
	if (buttonState) square.doAction (Square.ButtonAction.FILL); 
	else square.doAction (Square.ButtonAction.EMPTY); 

	// Also update button label
	if (buttonState) setText ("Empty"); 
	else setText ("Filled"); 
    }
}