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

  Program:   Visualization Toolkit
  Module:    vtkSpanTreeLayoutStrategy.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 vtkSpanTreeLayoutStrategy_h
#define vtkSpanTreeLayoutStrategy_h

#include "vtkInfovisLayoutModule.h" // For export macro
#include "vtkGraphLayoutStrategy.h"

class VTKINFOVISLAYOUT_EXPORT vtkSpanTreeLayoutStrategy : public vtkGraphLayoutStrategy
{
public:
  static vtkSpanTreeLayoutStrategy *New();

  vtkTypeMacro(vtkSpanTreeLayoutStrategy, vtkGraphLayoutStrategy);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(DepthFirstSpanningTree, bool);
  vtkGetMacro(DepthFirstSpanningTree, bool);
  vtkBooleanMacro(DepthFirstSpanningTree, bool);

  void Layout();

protected:
  vtkSpanTreeLayoutStrategy();
  ~vtkSpanTreeLayoutStrategy();

  vtkGraphLayoutStrategy *TreeLayout;
  bool DepthFirstSpanningTree;

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

#endif