source: josm/src/org/openstreetmap/josm/gui/IconToggleButton.java@ 260

package org.openstreetmap.josm.gui;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.swing.Action;
import javax.swing.JToggleButton;

/**
 * Just a toggle button, with smaller border and icon only to display in
 * MapFrame toolbars.
 *
 * @author imi
 */
public class IconToggleButton extends JToggleButton implements PropertyChangeListener {

        public boolean groupbutton;

        /**
         * Construct the toggle button with the given action.
         */
        public IconToggleButton(Action action) {
                super(action);
                setText(null);

                Object o = action.getValue(Action.SHORT_DESCRIPTION);
                if (o != null)
                        setToolTipText(o.toString());

                action.addPropertyChangeListener(this);
                
                addMouseListener(new MouseAdapter(){
                        @Override public void mousePressed(MouseEvent e) {
                                groupbutton = e.getX() > getWidth()/2 && e.getY() > getHeight()/2;
            }
                });
        }

        public void propertyChange(PropertyChangeEvent evt) {
                if (evt.getPropertyName().equals("active")) {
                        setSelected((Boolean)evt.getNewValue());
                        requestFocusInWindow();
                }
        }
}