/** BEGIN COPYRIGHT BLOCK
 * Copyright (C) 2001 Sun Microsystems, Inc.  Used by permission.
 * Copyright (C) 2005 Red Hat, Inc.
 * All rights reserved.
 *
 * 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 version
 * 2.1 of the License.
 *                                                                                 
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * END COPYRIGHT BLOCK **/
package com.netscape.management.client.topology;

import javax.swing.event.*;

/**
 * Provides high level methods to access and change data
 * items in a tree node.  The data itself is encapsulated
 * in NodeData objects.
 */
public interface INodeInfo {
    /**
      * Number of entries for this node.
      */
    public abstract int getNodeDataCount();

    /**
     * Return node entry at specified index.
     */
    public abstract NodeData getNodeData(int index);

    /**
     * Notification of change to implementing class about NodeData
     */
    public abstract void actionNodeDataChanged(NodeData data);

    /**
     * Adds change listener
     * allows implenting class to send change notifictions about NodeData
     */
    public abstract void addChangeListener(ChangeListener e);

    /**
     * Removes change listener
     */
    public abstract void removeChangeListener(ChangeListener e);
}
