GEOM_GenericObjPtr.h

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// Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// 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 GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
//  File   : GEOM_GenericObjPtr.h
//  Author : Vadim SANDLER, Open CASCADE S.A.S. (vadim.sandler@opencascade.com)

#ifndef GEOM_GenericObjPtr_H
#define GEOM_GenericObjPtr_H

#include "GEOM_GEOMBase.hxx"

#include "SALOMEconfig.h"
#include CORBA_SERVER_HEADER(GEOM_Gen)

namespace GEOM
{
  template <typename TInterface> class GenericObjPtr
  {
    typedef typename TInterface::_var_type TInterfaceVar;
    typedef typename TInterface::_ptr_type TInterfacePtr;
    
  private:
    TInterfaceVar myObject;

  private:
    void Register()
    {
      if ( !CORBA::is_nil( this->myObject ) )
        this->myObject->Register();
    }

    void UnRegister()
    {
      if ( !CORBA::is_nil( this->myObject ) ) {
        this->myObject->UnRegister();
        this->myObject = TInterface::_nil();
      }
    }
      
  public:
    GenericObjPtr()
    {}
    
    GenericObjPtr( TInterfacePtr theObject )
    {
      this->myObject = TInterface::_duplicate( theObject );
      this->Register();
    }
    
    GenericObjPtr( const GenericObjPtr& thePointer )
    {
      this->myObject = thePointer.myObject;
      this->Register();
    }
    
    ~GenericObjPtr()
    {
      this->UnRegister();
    }
    
    GenericObjPtr& operator=( TInterfacePtr theObject )
    {
      this->UnRegister();
      this->myObject = TInterface::_duplicate( theObject );
      this->Register();
      return *this;
    }

    GenericObjPtr& operator=( const GenericObjPtr& thePointer )
    {
      this->UnRegister();
      this->myObject = thePointer.myObject;
      this->Register();
      return *this;
    }

    static bool isSame( TInterfacePtr theLeft, TInterfacePtr theRight )
    {
      return theLeft->_is_equivalent( theRight );
    }

    bool operator==( TInterfacePtr theObject )
    {
      return isSame( this->myObject, theObject );
    }

    bool operator==( const GenericObjPtr& thePointer )
    {
      return isSame( this->myObject, thePointer.get() );;
    }

    bool operator!=( TInterfacePtr theObject )
    {
      return !isSame( this->myObject, theObject );
    }

    bool operator!=( const GenericObjPtr& thePointer )
    {
      return !isSame( this->myObject, thePointer.get() );;
    }

    TInterfacePtr operator->() const
    {
      return this->get();
    }

    operator bool() const
    {
       return !this->isNull();
    }

    void take( TInterfacePtr theObject )
    {
      this->UnRegister();
      this->myObject = TInterface::_duplicate( theObject );
    }

    TInterfacePtr get() const
    {
      return this->myObject;
    }

    TInterfacePtr copy() const
    {
      return TInterface::_duplicate( this->myObject );
    }
    
    bool isNull() const
    {
      return CORBA::is_nil( this->myObject );
    }

    void nullify()
    {
      this->UnRegister();
    }
  };
  
  typedef GenericObjPtr<GEOM::GEOM_Object>               GeomObjPtr;
  typedef GenericObjPtr<GEOM::GEOM_Field>                GeomFieldPtr;
  typedef GenericObjPtr<GEOM::GEOM_IBasicOperations>     BasicOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_ITransformOperations> TransformOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_I3DPrimOperations>    I3DPrimOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_IShapesOperations>    ShapesOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_IBlocksOperations>    BlocksOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_IBooleanOperations>   BooleanOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_ICurvesOperations>    CurvesOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_ILocalOperations>     LocalOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_IHealingOperations>   HealingOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_IInsertOperations>    InsertOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_IMeasureOperations>   MeasureOpPtr;
  typedef GenericObjPtr<GEOM::GEOM_IGroupOperations>     GroupOpPtr;

  template<> bool GEOMBASE_EXPORT GenericObjPtr<GEOM::GEOM_Object>::isSame( GEOM::GEOM_Object_ptr theLeft, GEOM::GEOM_Object_ptr theRight );
}

#endif // GEOM_GenericObjPtr_H