#ifndef __cpPlugins__Pipeline__Widget__h__
#define __cpPlugins__Pipeline__Widget__h__

#include <cpPlugins/Pipeline/ProcessObject.h>
#include <vtkRenderWindowInteractor.h>

// -------------------------------------------------------------------------
namespace cpPlugins
{
  namespace Pipeline
  {
    /**
     */
    class cpPlugins_EXPORT Widget
      : public ProcessObject
    {
    public:
      typedef Widget                          Self;
      typedef ProcessObject                   Superclass;
      typedef itk::SmartPointer< Self >       Pointer;
      typedef itk::SmartPointer< const Self > ConstPointer;

    public:
      itkTypeMacro( Widget, ProcessObject );
      cpPlugins_Id_Macro( Widget, Object );

    public:
      virtual void AddInteractor( vtkRenderWindowInteractor* i ) override;
      virtual bool IsInteractive( ) override;

      virtual void EnabledOn( );
      virtual void EnabledOff( );
      virtual void Clear( ) = 0;
      virtual void SetEnabled( bool v ) = 0;
      virtual bool GetEnabled( ) const = 0;

    protected:
      Widget( );
      virtual ~Widget( );

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

    protected:
      typedef vtkSmartPointer< vtkRenderWindowInteractor > _TInteractor;
      struct _TInteractorCmp
      {
        bool operator()(
          const _TInteractor& a, const _TInteractor& b
          ) const
          { return( a.GetPointer( ) < b.GetPointer( ) ); }
      };
      std::set< _TInteractor, _TInteractorCmp > m_Interactors;

    };

  } // ecapseman

} // ecapseman

#endif // __cpPlugins__Pipeline__Widget__h__

// eof - $RCSfile$