SetPossibilitiesListener.java

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JOptionPane;

public class SetPossibilitiesListener implements ActionListener {

	final static Object[] SELECTION_VALUES = { "4", "9", "16", "25", "36" };

	protected BoardManager boardManager;

	public SetPossibilitiesListener(BoardManager bM) {
		this.boardManager = bM;
	}

	public void actionPerformed(ActionEvent arg0) {
		Object poss = JOptionPane.showInputDialog(null,
				"Select number of possibilities", "",
				JOptionPane.QUESTION_MESSAGE, null, SELECTION_VALUES, String
						.valueOf(Field.POSSIBILITIES));
		if (null != poss)
			boardManager.setPossibilities(Integer.valueOf((String) poss));
	}

}