/*
 * Copyright 2007, Ingo Weinhold, ingo_weinhold@gmx.de.
 * All rights reserved. Distributed under the terms of the MIT license.
 */

#ifndef NODE_LISTENER_H
#define NODE_LISTENER_H

class Node;

// listening flags
enum {
        NODE_LISTEN_ANY_NODE    = 0x01,
        NODE_LISTEN_ADDED               = 0x02,
        NODE_LISTEN_REMOVED             = 0x04,
        NODE_LISTEN_ALL                 = NODE_LISTEN_ADDED | NODE_LISTEN_REMOVED,
};

class NodeListener {
public:
        NodeListener();
        virtual ~NodeListener();

        virtual void NodeAdded(Node *node);
        virtual void NodeRemoved(Node *node);
};

#endif  // NODE_LISTENER_H