/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield 
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * 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 
 * OpenSceneGraph Public License for more details.
*/
//osgFX - Copyright (C) 2003 Marco Jez

#ifndef OSGFX_REGISTRY_
#define OSGFX_REGISTRY_

#include <osgFX/Export>
#include <osgFX/Effect>

#include <osg/ref_ptr>

#include <map>
#include <string>

namespace osgFX
{

    class OSGFX_EXPORT Registry {
    public:

        struct Proxy {
            Proxy(const Effect *effect)
            {
                Registry::instance()->registerEffect(effect);
            }
        };

        typedef std::map<std::string, osg::ref_ptr<const Effect> > Effect_map;

        inline static Registry *instance();

        inline void registerEffect(const Effect *effect);

        inline const Effect_map &getEffectMap() const;

    protected:

        // Registry is a singleton; constructor and destructor must be protected
        Registry();
        ~Registry() {}

    private:
        static Registry *instance_;
        Effect_map effects_;
    };

    // INLINE METHODS

    inline Registry *Registry::instance()
    {
        if (!instance_) {
            instance_ = new Registry;
        }
        return instance_;
    }

    inline const Registry::Effect_map &Registry::getEffectMap() const
    {
        return effects_;
    }

    inline void Registry::registerEffect(const Effect *effect)
    {
        effects_[effect->effectName()] = effect;
    }

}

#endif