/* interface TreeModelListener
 *
 * Copyright (C) 2003  R M Pitman
 *
 * This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package charvax.swing.event;

/**
 * This defines the interface for an object that listens for changes in a
 * TreeModel.
 */
public interface TreeModelListener
{
    /**Invoked after a node (or a set of siblings) has
     * changed in some way.
     */
    public void treeNodesChanged(TreeModelEvent e);

    /** Invoked after nodes have been inserted into the tree.
     */
    public void treeNodesInserted(TreeModelEvent e);

    /** Invoked after nodes have been removed from the tree.
     */
    public void treeNodesRemoved(TreeModelEvent e);

    /** Invoked after the tree has drastically changed structure 
     * from a given node down.
     */
    public void treeStructureChanged(TreeModelEvent e);
}
