OMKKernelAttribute.h

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/*
 * This file is part of openMask © INRIA, CNRS, Universite de Rennes 1 1993-2002, thereinafter the Software
 * 
 * The Software has been developped within the Siames Project. 
 * INRIA, the University of Rennes 1 and CNRS jointly hold intellectual property rights
 * 
 * The Software has been registered with the Agence pour la Protection des
 * Programmes (APP) under registration number IDDN.FR.001.510008.00.S.P.2001.000.41200
 *
 * This file may be distributed under the terms of the Q Public License
 * version 1.0 as defined by Trolltech AS of Norway and appearing in the file
 * LICENSE.QPL included in the packaging of this file.
 *
 * Licensees holding valid specific licenses issued by INRIA, CNRS or Université de Rennes 1 
 * for the software may use this file in accordance with that specific license 
 *
 */
#ifndef OMKKernelAttributeHEADER
#define OMKKernelAttributeHEADER

#include "OMKName.h"
#include "OMKObjectHandle.h"
#include "OMKSimulatedObject.h"

namespace OMK
{
  class Controller ;
class OMK_API KernelAttribute : public Flowable
{
public:
   KernelAttribute( SimulatedObject & owner, const Name & attributeName ) ;


   virtual ~KernelAttribute() ;
   

   virtual const SimulatedObject & getOwner() const;


   virtual const Name & getName() const ;


   virtual void extract( std::istream & = std::cin ) = 0 ;


   virtual void insertInStream( std::ostream & = std::cout ) const = 0 ;

   
   virtual void printDebuggingInformation( std::ostream & err ) const = 0;

protected:
   inline void touch() const 
   {
     ObjectHandle * handle = _owner.getObjectHandle() ;
     if( handle != 0 )
     { // handle could be null during contruction phase of the owner
       handle->attributeRead() ;
     }
   }

   SimulatedObject & _owner ; 


   const Name _name ;
}; // OMKKernelAttribute

} //namespace OMK
//------------------------------------------------------------------------

#endif

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