configUpdateDataVisitor.h

/* Copyright (c) 2008-2009, Stefan Eilemann <eile@equalizergraphics.com> 
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *  
 * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef EQSERVER_CONFIGUPDATEDATAVISITOR_H
#define EQSERVER_CONFIGUPDATEDATAVISITOR_H

#include "configVisitor.h" // base class

namespace eq
{
namespace server
{
    class ConfigUpdateDataVisitor : public ConfigVisitor
    {
    public:
        ConfigUpdateDataVisitor();
        virtual ~ConfigUpdateDataVisitor() {}

        virtual VisitorResult visitPre( Node* node );
        virtual VisitorResult visitPost( Node* node );
        virtual VisitorResult visitPre( Pipe* pipe );
        virtual VisitorResult visitPost( Pipe* pipe );
        virtual VisitorResult visitPre( Window* window );
        virtual VisitorResult visitPost( Window* window );
        virtual VisitorResult visit( Channel* channel );

        // No need to traverse compounds
        virtual VisitorResult visitPre( Compound* compound )
            { return TRAVERSE_PRUNE; }
 
    private:
        const Channel* _lastDrawChannel;
        const Window*  _lastDrawWindow;
        const Pipe*    _lastDrawPipe;
    };
}
}
#endif // EQSERVER_CONSTCONFIGVISITOR_H