vtkCompositeDataIterator.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkCompositeDataIterator.h,v $

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm 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 __vtkCompositeDataIterator_h
#define __vtkCompositeDataIterator_h

#include "vtkObject.h"

class vtkDataObject;

class VTK_FILTERING_EXPORT vtkCompositeDataIterator : public vtkObject
{
public:
  vtkTypeRevisionMacro(vtkCompositeDataIterator,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  void InitTraversal() { this->GoToFirstItem(); }

  virtual void GoToFirstItem() = 0;

  virtual void GoToNextItem() = 0;

  virtual int IsDoneWithTraversal() = 0;

  virtual vtkDataObject* GetCurrentDataObject() = 0;

protected:
  vtkCompositeDataIterator(); 
  virtual ~vtkCompositeDataIterator(); 

private:
  vtkCompositeDataIterator(const vtkCompositeDataIterator&);  // Not implemented.
  void operator=(const vtkCompositeDataIterator&);  // Not implemented.
};

#endif

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