// =========================================================================
// @author Leonardo Florez Valencia
// @email florez-l@javeriana.edu.co
// =========================================================================

#ifndef __fpa__Base__Algorithm__h__
#define __fpa__Base__Algorithm__h__

#include <vector>
#include <itkObject.h>
/* TODO
   #include <itkMacro.h>
   #include <itkSmartPointer.h>
*/
namespace fpa
{
  namespace Base
  {
    /**
     */
    template< class _TFilter, class _TMarksInterface, class _TSeedsInterface >
    class Algorithm
      : public _TFilter,
        public _TMarksInterface,
        public _TSeedsInterface
    {
    public:
      typedef Algorithm                       Self;
      typedef _TFilter                        Superclass;
      typedef _TMarksInterface                TMarksInterface;
      typedef _TSeedsInterface                TSeedsInterface;
      typedef itk::SmartPointer< Self >       Pointer;
      typedef itk::SmartPointer< const Self > ConstPointer;

      typedef typename _TMarksInterface::TOutputValue TOutputValue;
      typedef typename _TSeedsInterface::TNode        TNode;
      typedef typename _TSeedsInterface::TSeeds       TSeeds;

      typedef std::vector< TNode > TNeighborhood;

    public:
      itkTypeMacro( fpa::Base::Algorithm, _TFilter );
      
      itkGetConstMacro( InitValue, TOutputValue );
      itkSetMacro( InitValue, TOutputValue );

    protected:
      Algorithm( );
      virtual ~Algorithm( );

      virtual void GenerateData( ) override;

      virtual void _ConfigureOutput( const TOutputValue& v ) = 0;
      virtual void _QueueInit( ) = 0;
      virtual void _QueuePush( const TNode& node ) = 0;
      virtual unsigned long _QueueSize( ) const = 0;
      virtual TNode _QueuePop( ) = 0;

    private:
      // Purposely not implemented
      Algorithm( const Self& other );
      Self& operator=( const Self& other );

    protected:
      TOutputValue m_InitValue;
    };

  } // ecapseman

} // ecapseman

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

#endif // __fpa__Base__Algorithm__h__

// eof - $RCSfile$