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

  Program:   Visualization Toolkit
  Module:    vtkGeoTreeNodeCache.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkGeoTreeNodeCache_h
#define vtkGeoTreeNodeCache_h

#include "vtkGeovisCoreModule.h" // For export macro
#include "vtkObject.h"
#include "vtkSmartPointer.h" // For SP ivars

class vtkGeoTreeNode;

class VTKGEOVISCORE_EXPORT vtkGeoTreeNodeCache : public vtkObject
{
public:
  static vtkGeoTreeNodeCache *New();
  vtkTypeMacro(vtkGeoTreeNodeCache,vtkObject);
  virtual void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(CacheMaximumLimit, int);
  vtkGetMacro(CacheMaximumLimit, int);


  vtkSetMacro(CacheMinimumLimit, int);
  vtkGetMacro(CacheMinimumLimit, int);

  void SendToFront(vtkGeoTreeNode* node);

  void RemoveNode(vtkGeoTreeNode* node);


  vtkGetMacro(Size, int);

protected:
  vtkGeoTreeNodeCache();
  ~vtkGeoTreeNodeCache();

  void TrimToCacheMinimum();

  void DeleteDataFromSiblings(vtkGeoTreeNode* node);

  int Size;
  int CacheMinimumLimit;
  int CacheMaximumLimit;
  //BTX
  vtkSmartPointer<vtkGeoTreeNode> Newest;
  vtkSmartPointer<vtkGeoTreeNode> Oldest;
  //ETX

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

#endif