Servers/Filters/vtkGroup.h

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/*=========================================================================

  Program:   ParaView
  Module:    $RCSfile: vtkGroup.h,v $

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkGroup_h
#define __vtkGroup_h

#include "vtkSource.h"

class vtkDataSet;

class VTK_EXPORT vtkGroup : public vtkSource
{
public:
  static vtkGroup *New();

  vtkTypeRevisionMacro(vtkGroup,vtkSource);
  void PrintSelf(ostream& os, vtkIndent indent);

  void AddInput(vtkDataSet *in);


  vtkDataSet *GetInput(int idx);
  vtkDataSet *GetInput() 
    {return this->GetInput( 0 );}
  

  virtual int GetNumberOfOutputs();
  vtkDataSet *GetOutput(int idx);
  vtkDataSet *GetOutput() 
    {return this->GetOutput( 0 );}

  virtual void ComputeInputUpdateExtents( vtkDataObject *output );

protected:
  vtkGroup();
  ~vtkGroup();

  // Usual data generation method
  virtual void Execute();
  virtual void ExecuteInformation();
  virtual void PropagateUpdateExtent(vtkDataObject *output);

private:

  // hide the superclass' AddInput() from the user and the compiler
  void AddInput(vtkDataObject *)
    { vtkErrorMacro( << "AddInput() must be called with a vtkDataSet not a vtkDataObject."); };
  void RemoveInput(vtkDataObject *input)
    { this->vtkProcessObject::RemoveInput(input); };
private:
  vtkGroup(const vtkGroup&);  // Not implemented.
  void operator=(const vtkGroup&);  // Not implemented.
};


#endif

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