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PsNullOutputCreator.h

Go to the documentation of this file.

/*
 * 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 PsNullOutputCreatorHEADER
#define PsNullOutputCreatorHEADER

class PsController ;
class PsSimulatedObject ;
class PsOutputNT ;
template <typename Type> class PsOutput ;
#include <map>

class PsNullOutputCreator {
public:
   static void setController(PsController * ) ;
   template <typename Type> static PsOutput<Type> * getNullOutput () ;
protected:
   static PsController & getController() ;
   static PsSimulatedObject & getSimulatedObject () ;
   
   static PsController * _theController ;
   static PsSimulatedObject * _theEmptyObject ;
   static map <const char *, PsOutputNT *> _theNullOutputs ;
};

#include <typeinfo>
#include "PsNullOutput.h"

template <typename Type>
PsOutput<Type> *
PsNullOutputCreator::getNullOutput () 
{
   PsOutput<Type> * result ;
   map <const char *, PsOutputNT *>::iterator i = _theNullOutputs.find ( typeid(Type).name() ) ;
   if ( i == _theNullOutputs.end() ) 
      {
         result  = new PsNullOutput<Type>( PsNullOutputCreator::getSimulatedObject() ) ;
         i = _theNullOutputs.insert(map <const char *, PsOutputNT *>::value_type (typeid(Type).name(), 
                                                                                       result ) ).first ;
      }
   else 
      {
         result = dynamic_cast <PsNullOutput<Type> *> (i->second) ;
         assert ( result != NULL );
      }
   return result ;
}

#endif

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