#ifndef __CPPLUGINS__INTERFACE__PROCESSOBJECT__H__
#define __CPPLUGINS__INTERFACE__PROCESSOBJECT__H__

#include <map>
#include <string>
#include <itkDataObject.h>
#include <cpPlugins/Interface/cpPlugins_Interface_Export.h>
#include <cpPlugins/Interface/Object.h>
#include <cpPlugins/Interface/DataObject.h>

namespace cpPlugins
{
  namespace Interface
  {
    class DataObject;

    /**
     */
    class cpPlugins_Interface_EXPORT ProcessObject
      : public Object
    {
    public:
      typedef ProcessObject Self;
      typedef Object        Superclass;

      typedef std::pair< std::string, std::string > TParameter;
      typedef std::map< std::string, TParameter >   TParameters;

    public:
      ProcessObject( );
      virtual ~ProcessObject( );

      virtual std::string GetClassName( ) const;
      virtual const TParameters& GetDefaultParameters( ) const;
      virtual void SetParameters( const TParameters& params );

      virtual unsigned int GetNumberOfInputs( ) const;
      virtual unsigned int GetNumberOfOutputs( ) const;

      virtual void SetNumberOfInputs( unsigned int n );
      virtual void SetNumberOfOutputs( unsigned int n );

      virtual void SetInput( unsigned int idx, const DataObject* dobj );
      virtual DataObject* GetOutput( unsigned int idx );

      virtual std::string Update( );
      virtual void DisconnectOutputs( );

    protected:
      virtual itk::DataObject* _GetInput( unsigned int idx );
      virtual void _SetOutput( unsigned int idx, itk::DataObject* dobj );
      virtual void _DeleteOutputs( );

      template< class O >
      void _MakeOutput( unsigned int idx )
        {
          if( idx >= this->m_Outputs.size( ) )
            return;
        
          if( !( this->m_OutputsDisconnected ) )
            if( this->m_Outputs[ idx ] != NULL )
              delete this->m_Outputs[ idx ];

          this->m_Outputs[ idx ] = new O( );
          this->m_Outputs[ idx ]->SetSource( this );
        }

      virtual std::string _GenerateData( ) = 0;

    protected:
      TParameters m_DefaultParameters;
      TParameters m_Parameters;

      std::vector< const DataObject* > m_Inputs;
      std::vector< DataObject* >       m_Outputs;
      bool m_OutputsDisconnected;
    };

  } // ecapseman

} // ecapseman

#endif // __CPPLUGINS__INTERFACE__PROCESSOBJECT__H__

// eof - $RCSfile$