///
///    This file is part of ILNumerics Community Edition.
///
///    ILNumerics Community Edition - high performance computing for applications.
///    Copyright (C) 2006 - 2012 Haymo Kutschbach, http://ilnumerics.net
///
///    ILNumerics Community Edition is free software: you can redistribute it and/or modify
///    it under the terms of the GNU General Public License version 3 as published by
///    the Free Software Foundation.
///
///    ILNumerics Community Edition 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 ILNumerics Community Edition. See the file License.txt in the root
///    of your distribution package. If not, see <http://www.gnu.org/licenses/>.
///
///    In addition this software uses the following components and/or licenses: 
///
///    =================================================================================
///    The Open Toolkit Library License
///    
///    Copyright (c) 2006 - 2009 the Open Toolkit library.
///    
///    Permission is hereby granted, free of charge, to any person obtaining a copy
///    of this software and associated documentation files (the "Software"), to deal
///    in the Software without restriction, including without limitation the rights to 
///    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
///    the Software, and to permit persons to whom the Software is furnished to do
///    so, subject to the following conditions:
///
///    The above copyright notice and this permission notice shall be included in all
///    copies or substantial portions of the Software.
///
///    =================================================================================
///    

using System;
using System.Collections.Generic;
using System.Text;
using ILNumerics.Drawing; 

namespace ILNumerics.Drawing.Graphs {

    /// <summary>
    /// the root node of every scene graph (internal use only) 
    /// </summary>
    internal class ILSceneGraphRoot : ILSceneGraphInnerNode {
        
        public event SceneGraphNodeHandler NodeAdded; 
        public event SceneGraphNodeHandler NodeRemoved;  
        
        public ILSceneGraphRoot(ILPanel panel) : base(panel) { }

        protected override void OnNodeAdded(ILSceneGraphNode node) {
            if (NodeAdded != null && !m_eventingSuspended) {
                NodeAdded(this, new ILSceneGraphNodeEventArgs(node)); 
            }
        }
        protected override void OnNodeRemoved(ILSceneGraphNode node) {
            if (NodeRemoved != null && !m_eventingSuspended) {
                NodeRemoved(this, new ILSceneGraphNodeEventArgs(node)); 
            }
        }
    }
}