itkDataObjectDecorator.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
/*=========================================================================
 *
 *  Portions of this file are subject to the VTK Toolkit Version 3 copyright.
 *
 *  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 *
 *  For complete copyright, license and disclaimer of warranty information
 *  please refer to the NOTICE file at the top of the ITK source tree.
 *
 *=========================================================================*/
#ifndef itkDataObjectDecorator_h
#define itkDataObjectDecorator_h
 
#include "itkDataObject.h"
#include "itkObjectFactory.h"
 
namespace itk
{
template <typename T>
class ITK_TEMPLATE_EXPORT DataObjectDecorator : public DataObject
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(DataObjectDecorator);
 
  using Self = DataObjectDecorator;
  using Superclass = DataObject;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  using ComponentType = T;
  using ComponentPointer = typename T::Pointer;
  using ComponentConstPointer = typename T::ConstPointer;
 
  itkNewMacro(Self);
 
  itkTypeMacro(DataObjectDecorator, DataObject);
 
  virtual void
  Set(const ComponentType * val);
 
  virtual const ComponentType *
  Get() const;
  virtual ComponentType *
  GetModifiable();
 
  ModifiedTimeType
  GetMTime() const override;
 
  void
  Initialize() override;
 
  void
  Graft(const DataObject *) override;
  void
  Graft(const Self * data);
 
  template <typename TOther>
  void
  Graft(const DataObjectDecorator<TOther> * decorator)
  {
    auto * component = const_cast<ComponentType *>(dynamic_cast<const ComponentType *>(decorator->Get()));
    if (!component)
    {
      return;
    }
    this->Set(component);
  }
 
protected:
  DataObjectDecorator() = default;
  ~DataObjectDecorator() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
protected:
private:
  ComponentPointer m_Component;
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkDataObjectDecorator.hxx"
#endif
 
#endif