Common/KWCommon/vtkQueueIterator.h

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

  Module:    $RCSfile: vtkQueueIterator.h,v $

  Copyright (c) Kitware, Inc.
  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 __vtkQueueIterator_h
#define __vtkQueueIterator_h

#include "vtkAbstractIterator.h"

template <class DType> class vtkLinkedList;
template <class DType> class vtkLinkedListNode;

template <class DType>
class vtkQueueIterator : public vtkAbstractIterator<vtkIdType,DType>
{
  friend class vtkQueue<DType>;
  virtual const char* GetClassNameInternal() const { return "vtkQueueIterator"; }

public:

  int GetKey(vtkIdType&);

  int GetData(DType&);
  
  int SetData(const DType&);
  
  void InitTraversal();
  
  int IsDoneWithTraversal();
  
  void GoToNextItem();
  
  void GoToPreviousItem();
  
  void GoToFirstItem();
  
  void GoToLastItem();
  
protected:
  static vtkQueueIterator<DType> *New(); 

  vtkQueueIterator() {
    this->Index = -1;
    this->Number = 0;
  }
  virtual ~vtkQueueIterator() {}

  vtkIdType Index;
  vtkIdType Number;

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

#ifdef VTK_NO_EXPLICIT_TEMPLATE_INSTANTIATION
#include "vtkQueueIterator.txx"
#endif 

#endif

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