vtkEnsembleDataReader.h

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

#include "vtkDataObjectAlgorithm.h"
#include "vtkPVVTKExtensionsIOGeneralModule.h" //needed for exports

#include <string> // for std::string

class VTKPVVTKEXTENSIONSIOGENERAL_EXPORT vtkEnsembleDataReader : public vtkDataObjectAlgorithm
{
public:
  static vtkEnsembleDataReader* New();
  vtkTypeMacro(vtkEnsembleDataReader, vtkDataObjectAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkSetStringMacro(FileName);
  vtkGetStringMacro(FileName);


  vtkSetMacro(CurrentMember, unsigned int);
  vtkGetMacro(CurrentMember, unsigned int);


  unsigned int GetNumberOfMembers() const;
  vtkGetVector2Macro(CurrentMemberRange, unsigned int);

  std::string GetFilePath(unsigned int rowIndex) const;

  void SetReader(unsigned int rowIndex, vtkAlgorithm* reader);

  void ResetReaders();

  bool UpdateMetaData();

protected:
  vtkEnsembleDataReader();
  ~vtkEnsembleDataReader() override;

  int ProcessRequest(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
  vtkAlgorithm* GetCurrentReader();

private:
  char* FileName;
  unsigned int CurrentMember;
  unsigned int CurrentMemberRange[2];

  class vtkInternal;
  vtkInternal* Internal;

  vtkEnsembleDataReader(const vtkEnsembleDataReader&) = delete;
  void operator=(const vtkEnsembleDataReader&) = delete;
};

#endif