vtkTreeIterator.h

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

  Program:   Visualization Toolkit
  Module:    vtkTreeIterator.h

  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 vtkTreeIterator_h
#define vtkTreeIterator_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"

class vtkTree;

class VTKCOMMONDATAMODEL_EXPORT vtkTreeIterator : public vtkObject
{
public:
  vtkTypeMacro(vtkTreeIterator, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;


  void SetTree(vtkTree* graph);
  vtkGetMacro(Tree, vtkTree*);


  void SetStartVertex(vtkIdType vertex);
  vtkGetMacro(StartVertex, vtkIdType);

  vtkIdType Next();

  bool HasNext();

  void Restart();

protected:
  vtkTreeIterator();
  ~vtkTreeIterator() VTK_OVERRIDE;

  virtual void Initialize() = 0;
  virtual vtkIdType NextInternal() = 0;

  vtkTree* Tree;
  vtkIdType StartVertex;
  vtkIdType NextId;

private:
  vtkTreeIterator(const vtkTreeIterator &) VTK_DELETE_FUNCTION;
  void operator=(const vtkTreeIterator &) VTK_DELETE_FUNCTION;
};

#endif