//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.

#ifndef OSGDB_INPUT
#define OSGDB_INPUT 1

#include <osg/Image>
#include <osg/Node>
#include <osg/Drawable>
#include <osg/StateAttribute>

#include <osgDB/FieldReaderIterator>

#include <map>
#include <string>

namespace osgDB {

/** Class for managing the reading of ASCII .osg files.*/
class OSGDB_EXPORT Input : public FieldReaderIterator
{
    public:

        Input();
        virtual ~Input();

        virtual osg::Object*         readObjectOfType(const osg::Object& compObj);

        virtual osg::Object*         readObject();
        virtual osg::Image*          readImage();
        virtual osg::Drawable*       readDrawable();
        virtual osg::StateAttribute* readStateAttribute();
        virtual osg::Node*           readNode();

        virtual osg::Object*         readObject(const std::string& fileName);
        virtual osg::Image*          readImage(const std::string& fileName);
        virtual osg::Node*           readNode(const std::string& fileName);
        
        virtual osg::Object*         getObjectForUniqueID(const std::string& uniqueID);
        virtual void                 regisiterUniqueIDForObject(const std::string& uniqueID,osg::Object* obj);

    private:
    
        typedef std::map<std::string,osg::Object*> UniqueIDToObjectMapping;
        UniqueIDToObjectMapping _uniqueIDToObjectMap;

};

}

#endif                                            // __SG_INPUT_H