TransferActionListener.java

/*
 * Copyright (C) 2013 Timo Vesalainen
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

package org.vesalainen.parsers.sql.dsql.ui;

import java.awt.KeyboardFocusManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.Action;
import javax.swing.JComponent;

/**
 * @author Timo Vesalainen
 */
public class TransferActionListener implements ActionListener, PropertyChangeListener
{
    private JComponent focusOwner;
    public TransferActionListener()
    {
        KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
        manager.addPropertyChangeListener("permanentFocusOwner", this);
    }

    @Override
    public void actionPerformed(ActionEvent e)
    {
        if (focusOwner != null)
        {
            String actionCommand = e.getActionCommand();
            Action action = focusOwner.getActionMap().get(actionCommand);
            if (action != null)
            {
                action.actionPerformed(new ActionEvent(focusOwner, ActionEvent.ACTION_PERFORMED, null));
            }
        }
    }

    @Override
    public void propertyChange(PropertyChangeEvent evt)
    {
        Object o = evt.getNewValue();
        if (o instanceof JComponent)
        {
            focusOwner = (JComponent) o;
        }
        else
        {
            focusOwner = null;
        }
    }

}