#ifndef __loadable_h__
#define __loadable_h__

#include <string>

/*****************************************************************************/
/* Loadable Class */
/*
 * A pure virtual base class for loadable items.
 * 
 * When used in conjunction with the loader_class template, provides a method
 * for cached loading of items and guaranteed unique name look up.
 *
 * Classes which derive from loadable_class must implement load() method.
 */
/*****************************************************************************/

class loadable_class
{
  private:
    std::string    file_name;

  public:
    virtual ~loadable_class( void ) {}

    void           set_file_name( const std::string &file_name );
    std::string    get_file_name( void ) const;
    virtual int    get_file_version( void ) const;
    virtual bool   load( bool use_cached = true ) = 0;
};

#endif // __loadable_h__