#ifndef __fpa__Base__RegionGrow__h__
#define __fpa__Base__RegionGrow__h__

#include <queue>
#include <fpa/Config.h>
#include <fpa/Base/Functors/RegionGrow/Base.h>

namespace fpa
{
  namespace Base
  {
    /**
     */
    template< class _TSuperclass >
    class RegionGrow
      : public _TSuperclass
    {
    public:
      typedef RegionGrow                      Self;
      typedef _TSuperclass                    Superclass;
      typedef itk::SmartPointer< Self >       Pointer;
      typedef itk::SmartPointer< const Self > ConstPointer;

      typedef typename Superclass::TOutput TOutput;
      typedef typename Superclass::TVertex TVertex;

      typedef fpa::Base::Functors::RegionGrow::Base< TVertex > TGrowFunction;

    protected:
      typedef typename Superclass::_TQueueNode _TQueueNode;
      typedef std::queue< _TQueueNode > _TQueue;

    public:
      itkTypeMacro( RegionGrow, Algorithm );

      itkGetObjectMacro( GrowFunction, TGrowFunction );
      itkGetConstMacro( InsideValue, TOutput );
      itkGetConstMacro( OutsideValue, TOutput );

      itkSetObjectMacro( GrowFunction, TGrowFunction );
      itkSetMacro( InsideValue, TOutput );
      itkSetMacro( OutsideValue, TOutput );

    protected:
      RegionGrow( );
      virtual ~RegionGrow( );

      virtual bool _UpdateValue(
        _TQueueNode& v, const _TQueueNode& p
        ) override;
      virtual unsigned long _QueueSize( ) const override;
      virtual void _QueueClear( ) override;
      virtual void _QueuePush( const _TQueueNode& node ) override;
      virtual _TQueueNode _QueuePop( ) override;

    private:
      // Purposely not defined
      RegionGrow( const Self& other );
      Self& operator=( const Self& other );

    protected:
      TOutput m_InsideValue;
      TOutput m_OutsideValue;
      _TQueue m_Queue;
      typename TGrowFunction::Pointer m_GrowFunction;
    };

  } // ecapseman

} // ecapseman

#ifndef ITK_MANUAL_INSTANTIATION
#  include <fpa/Base/RegionGrow.hxx>
#endif // ITK_MANUAL_INSTANTIATION

#endif // __fpa__Base__RegionGrow__h__

// eof - $RCSfile$