ScalarKernelBase.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 "ResidualObject.h"
#include "ScalarCoupleable.h"
#include "MooseVariableScalar.h"

class ScalarKernelBase : public ResidualObject, public ScalarCoupleable
{
public:
  static InputParameters validParams();

  ScalarKernelBase(const InputParameters & parameters);

  virtual void reinit() = 0;

  virtual const MooseVariableScalar & variable() const override { return _var; }

  virtual bool isActive() { return true; }

  const VariableValue & uOld() const;

  virtual bool computesJacobian() const { return true; }

protected:
  MooseVariableScalar & _var;

  unsigned int _i, _j;
};