PopButtonGroup.java

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/*
 * Copyright (c) 2008, AIST, the University of Tokyo and General Robotix Inc.
 * All rights reserved. This program is made available under the terms of the
 * Eclipse Public License v1.0 which accompanies this distribution, and is
 * available at http://www.eclipse.org/legal/epl-v10.html
 * Contributors:
 * General Robotix Inc.
 * National Institute of Advanced Industrial Science and Technology (AIST) 
 */
package com.generalrobotix.ui.view.tdview;

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

@SuppressWarnings("serial")
public class PopButtonGroup extends ButtonGroup implements ActionListener {
    //--------------------------------------------------------------------
    // Instance variables
    private AbstractButton prevButton_;
    private JToggleButton hidden_;

    //--------------------------------------------------------------------
    // Constructor
    public PopButtonGroup() {
        hidden_ = new JToggleButton();
        hidden_.setVisible(false);
        super.add(hidden_);
    }

    //--------------------------------------------------------------------
    // Public methods
    public void addActionListener(ActionListener listener) {
        hidden_.addActionListener(listener);
    }

    public void removeActionListener(ActionListener listener) {
        hidden_.removeActionListener(listener);
    }

    public void selectNone() {
        hidden_.setSelected(true);
    }

    //--------------------------------------------------------------------
    // Override
    public void add(AbstractButton button) {
        button.addActionListener(this);
        super.add(button);
    }

    public void remove(AbstractButton button) {
        button.removeActionListener(this);
        super.remove(button);
    }

    //--------------------------------------------------------------------
    // Implementation of ActionListener
    public void actionPerformed(ActionEvent evt) {
        if (evt.getSource() == prevButton_) {
            //hidden_.setSelected(true);
            SwingUtilities.invokeLater(
                new Runnable() {
                     public void run() {
                         hidden_.doClick();
                         prevButton_ = hidden_;
                     }
                }
            );
        } else {
            prevButton_ = (AbstractButton)evt.getSource();
        }
    }
}