/*
 *  PHEX - The pure-java Gnutella-servent.
 *  Copyright (C) 2001 - 2005 Phex Development Group
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 *  Created on 13.12.2004
 *  --- CVS Information ---
 *  $Id: FWPopupMenu.java,v 1.3 2005/10/03 00:18:25 gregork Exp $
 */
package phex.gui.common;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.swing.*;

import phex.gui.actions.FWAction;
import phex.gui.actions.FWToggleAction;

/**
 *
 */
public class FWPopupMenu extends JPopupMenu
{
    public FWPopupMenu()
    {
        super();
    }

    public FWPopupMenu(String name)
    {
        super(name);
    }

    public JMenuItem add(Action a)
    {
        throw new UnsupportedOperationException("Use addAction( )");
    }

    public JMenuItem addAction(FWAction action)
    {
        return addAction(action, action.isToggleAction());
    }

    public JMenuItem addAction(Action a, boolean isToogleAction)
    {
        JMenuItem mi = createActionComponent(a, isToogleAction);
        mi.setAction(a);
        add(mi);
        return mi;
    }

    protected JMenuItem createActionComponent(Action action,
        boolean isToogleAction)
    {
        JMenuItem mi;
        if (isToogleAction)
        {
            mi = new JCheckBoxMenuItem((String) action.getValue(Action.NAME),
                (Icon) action.getValue(Action.SMALL_ICON))
            {
                protected PropertyChangeListener createActionPropertyChangeListener(
                    Action a)
                {
                    PropertyChangeListener pcl = createActionChangeListener(this);
                    if (pcl == null)
                    {
                        pcl = super.createActionPropertyChangeListener(a);
                    }
                    return pcl;
                }
            };
            mi.setSelected(((FWToggleAction) action).isSelected());
            registerActionChangeListener(mi, action);
            mi.setHorizontalTextPosition(JButton.TRAILING);
            mi.setVerticalTextPosition(JButton.CENTER);
            mi.setEnabled(action.isEnabled());
        }
        else
        {
            mi = createActionComponent(action);
        }
        KeyStroke accelerator = (KeyStroke)action.getValue( FWAction.ACCELERATOR_KEY );
        if ( accelerator != null )
        {
            mi.setAccelerator( accelerator );
        }
        return mi;
    }

    private void registerActionChangeListener(JMenuItem mi, Action a)
    {
        PropertyChangeListener actionPropertyChangeListener = new ActionChangedListener(
            mi);
        a.addPropertyChangeListener(actionPropertyChangeListener);
    }

    private class ActionChangedListener implements PropertyChangeListener
    {
        JMenuItem menuItem;

        ActionChangedListener(JMenuItem mi)
        {
            super();
            menuItem = mi;
        }

        public void propertyChange(PropertyChangeEvent e)
        {
            String propertyName = e.getPropertyName();
            if (propertyName.equals(Action.NAME))
            {
                String text = (String) e.getNewValue();
                menuItem.setText(text);
                menuItem.repaint();
            }
            else if (propertyName.equals("enabled"))
            {
                Boolean enabledState = (Boolean) e.getNewValue();
                menuItem.setEnabled(enabledState.booleanValue());
                menuItem.repaint();
            }
            else if (propertyName.equals(FWAction.MEDIUM_ICON))
            {
                Icon icon = (Icon) e.getNewValue();
                menuItem.setIcon(icon);
                menuItem.invalidate();
                menuItem.repaint();
            }
            else if (propertyName.equals(FWToggleAction.IS_SELECTED))
            {
                Boolean state = (Boolean) e.getNewValue();
                menuItem.setSelected(state.booleanValue());
                menuItem.repaint();
            }
        }
    }

}