/* Copyright (C) 2005-2007  The Chemistry Development Kit (CDK) project
 *
 * Contact: cdk-devel@lists.sourceforge.net
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package org.openscience.cdk.controller;

import javax.swing.event.UndoableEditEvent;
import javax.swing.event.UndoableEditListener;
import javax.swing.undo.UndoManager;
import javax.swing.undo.UndoableEdit;

/**
 * An undo adapter for updating the state of the undo components according to
 * the new state of the undo history list. Is registered as a listener to the
 * undoSupport which is receiving the undo/redo events.
 *
 * @author      tohel
 * @cdk.module  control
 * @cdk.githash
 */
public class UndoAdapter implements UndoableEditListener {

    private UndoManager undoManager;

    /**
     * @param undoManager
     *            The undoManager handling the undo/redo history list
     */
    public UndoAdapter(UndoManager undoManager) {
        this.undoManager = undoManager;
    }

    /*
     * (non-Javadoc)
     * @see
     * javax.swing.event.UndoableEditListener#undoableEditHappened(javax.swing
     * .event.UndoableEditEvent)
     */
    @Override
    public void undoableEditHappened(UndoableEditEvent arg0) {
        UndoableEdit edit = arg0.getEdit();
        undoManager.addEdit(edit);
    }

}
