vtkDataAssemblyVisitor.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkDataAssemblyVisitor_h
#define vtkDataAssemblyVisitor_h

#include "vtkCommonDataModelModule.h" // for export macros
#include "vtkObject.h"
#include <memory> // for std::unique_ptr
#include <vector> // for std::vector

VTK_ABI_NAMESPACE_BEGIN
class vtkDataAssembly;

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

protected:
  vtkDataAssemblyVisitor();
  ~vtkDataAssemblyVisitor() override;

  const vtkDataAssembly* GetAssembly() const { return this->Assembly; }

  int GetTraversalOrder() const { return this->TraversalOrder; }

  virtual void Visit(int nodeid) = 0;

  virtual bool GetTraverseSubtree(int vtkNotUsed(nodeid)) { return true; }


  virtual void BeginSubTree(int vtkNotUsed(nodeid)) {}
  virtual void EndSubTree(int vtkNotUsed(nodeid)) {}


  const char* GetCurrentNodeName() const;
  std::vector<std::string> GetCurrentNodePath() const;
  std::vector<unsigned int> GetCurrentDataSetIndices() const;

private:
  vtkDataAssemblyVisitor(const vtkDataAssemblyVisitor&) = delete;
  void operator=(const vtkDataAssemblyVisitor&) = delete;

  class vtkInternals;
  std::unique_ptr<vtkInternals> Internals;

  const vtkDataAssembly* Assembly;
  int TraversalOrder;
  friend class vtkDataAssembly;
};

VTK_ABI_NAMESPACE_END
#endif