NoneSelectedButtonGroup.java

package aliview.gui;

import javax.swing.AbstractButton;
import javax.swing.ButtonGroup;
import javax.swing.ButtonModel;
import javax.swing.JButton;

public class NoneSelectedButtonGroup extends ButtonGroup {
    private AbstractButton hack;

    public NoneSelectedButtonGroup() {
        super();
        hack = new JButton();
        add(hack);
    }

    @Override
    public void setSelected(ButtonModel model, boolean selected) {
        super.setSelected(selected ? model : hack.getModel(), true);
    }
}