#ifndef __CPPLUGINS__PORT__H__
#define __CPPLUGINS__PORT__H__

#include <cpPlugins/DataObject.h>

namespace cpPlugins
{
  /**
   */
  class cpPlugins_EXPORT Port
  {
  public:
    typedef Port Self;

  public:
    Port( );
    virtual ~Port( );
    Self& operator=( DataObject* obj );
    Self& operator=( const Self& other );

    bool IsValid( ) const;

    // This could be seen as a pointer to DataObject's
    inline DataObject* GetPointer( )
      { return( this->m_Data.GetPointer( ) ); }
    inline const DataObject* GetPointer( ) const
      { return( this->m_Data.GetPointer( ) ); }
    inline DataObject* operator->( ) const
      { return( this->m_Data.GetPointer( ) ); }

    inline void SetPointer( DataObject* ptr )
      { this->m_Data = ptr; }

  protected:
    cpPlugins::DataObject::Pointer m_Data;
  };

  /**
   */
  class cpPlugins_EXPORT InputPort
    : public Port
  {
  public:
    typedef InputPort Self;
    typedef Port      Superclass;

  public:
    InputPort( bool required = false );
    virtual ~InputPort( );
    Self& operator=( DataObject* obj );
    Self& operator=( const Superclass& other );

    bool IsRequired( ) const;
    void RequiredOn( );
    void RequiredOff( );
    void SetRequired( bool required );

  protected:
    bool m_Required;
  };

  /**
   */
  class cpPlugins_EXPORT OutputPort
    : public Port
  {
  public:
    typedef OutputPort Self;
    typedef Port       Superclass;

  public:
    OutputPort( );
    virtual ~OutputPort( );
    Self& operator=( DataObject* obj );
    Self& operator=( const Superclass& other );
  };

} // ecapseman

#endif // __CPPLUGINS__PORT__H__

// eof - $RCSfile$