ElementIntegralVariablePostprocessor.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

#include "ElementIntegralPostprocessor.h"
#include "MooseVariableInterface.h"

class ElementIntegralVariablePostprocessor : public ElementIntegralPostprocessor,
                                             public MooseVariableInterface<Real>
{
public:
  static InputParameters validParams();

  ElementIntegralVariablePostprocessor(const InputParameters & parameters);

protected:
  virtual Real computeQpIntegral() override;

  const VariableValue & _u;
  const VariableGradient & _grad_u;
  bool _use_abs_value;
};