text: /*=========================================================================
   *
   *  Copyright Insight Software Consortium
   *
   *  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_hxx
  #define itkDataObjectDecorator_hxx
  
  #include "itkDataObjectDecorator.h"
  #include <algorithm>
  
  namespace itk
  {
  /**
   *
   */
  template< typename T >
  void
  DataObjectDecorator< T >
  ::Set( const ComponentType *val)
  {
    if ( m_Component != val )
      {
      m_Component = const_cast<ComponentType*>(val);
      this->Modified();
      }
  }
  
  /**
   *
   */
  template< typename T >
  const T *
  DataObjectDecorator< T >
  ::Get() const
  {
    return m_Component.GetPointer();
  }
  
  /**
   *
   */
  template< typename T >
  T *
  DataObjectDecorator< T >
  ::GetModifiable()
  {
    return m_Component.GetPointer();
  }
  
  /**
   *
   */
  template< typename T >
  ModifiedTimeType
  DataObjectDecorator< T >
  ::GetMTime() const
  {
    const ModifiedTimeType t = Superclass::GetMTime();
    if (m_Component.IsNotNull())
      {
      return std::max(t, m_Component->GetMTime());
      }
    return t;
  }
  
  /**
   *
   */
  template< typename T >
  void
  DataObjectDecorator< T >
  ::Initialize()
  {
    Superclass::Initialize();
  
    // make sure the MTime does not change
    if ( m_Component.IsNull())
      {
      return;
      }
    if ( m_Component->GetMTime() > Superclass::GetMTime() )
      {
      this->SetTimeStamp(m_Component->GetTimeStamp());
      }
    m_Component = nullptr;
  }
  
  /**
   *
   */
  template< typename T >
  void
  DataObjectDecorator< T >
  ::Graft( const DataObject *data )
  {
    const auto * decorator = dynamic_cast< const Self * >( data );
    this->Graft(decorator);
  }
  
  /**
   *
   */
  template< typename T >
  void
  DataObjectDecorator< T >
  ::Graft( const Self *data )
  {
    if ( !data )
      {
      return;
      }
  
    this->Set(data->m_Component);
  }
  
  /**
   *
   */
  template< typename T >
  void
  DataObjectDecorator< T >
  ::PrintSelf(std::ostream & os, Indent indent) const
  {
    Superclass::PrintSelf(os, indent);
  
    os << indent << "Component: " << m_Component << std::endl;
  }
  } // end namespace itk
  
  #endif
  