/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2023 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

Class
    Foam::calculatedFvPatchField

Group
    grpGenericBoundaryConditions

Description
    This boundary condition is not designed to be evaluated; it is assumed
    that the value is assigned via field assignment, and not via a call to
    e.g. \c updateCoeffs or \c evaluate.

Usage
    \table
        Property     | Description             | Required  | Default
        value        | field value             | yes |
    \endtable

    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            calculated;
        value           uniform (0 0 0);    // Required value entry
    }
    \endverbatim

SourceFiles
    calculatedFvPatchField.C

\*---------------------------------------------------------------------------*/

#ifndef Foam_calculatedFvPatchField_H
#define Foam_calculatedFvPatchField_H

#include "fvPatchField.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

/*---------------------------------------------------------------------------*\
                   Class calculatedFvPatchField Declaration
\*---------------------------------------------------------------------------*/

template<class Type>
class calculatedFvPatchField
:
    public fvPatchField<Type>
{
public:

    //- Runtime type information
    TypeName("calculated");  // fieldTypes::calculatedTypeName_()


    // Constructors

        //- Construct from patch and internal field
        calculatedFvPatchField
        (
            const fvPatch&,
            const DimensionedField<Type, volMesh>&
        );

        //- Construct from patch, internal field and dictionary
        calculatedFvPatchField
        (
            const fvPatch&,
            const DimensionedField<Type, volMesh>&,
            const dictionary&,
            IOobjectOption::readOption requireValue = IOobjectOption::MUST_READ
        );

        //- Compatibility (prefer with readOption)
        calculatedFvPatchField
        (
            const fvPatch& p,
            const DimensionedField<Type, volMesh>& iF,
            const dictionary& dict,
            const bool needValue
        )
        :
            calculatedFvPatchField
            (
                p, iF, dict,
                (needValue? IOobjectOption::MUST_READ : IOobjectOption::NO_READ)
            )
        {}

        //- Construct by mapping given patch field onto a new patch
        calculatedFvPatchField
        (
            const calculatedFvPatchField<Type>&,
            const fvPatch&,
            const DimensionedField<Type, volMesh>&,
            const fvPatchFieldMapper&
        );

        //- Construct as copy
        calculatedFvPatchField
        (
            const calculatedFvPatchField<Type>&
        );

        //- Construct as copy setting internal field reference
        calculatedFvPatchField
        (
            const calculatedFvPatchField<Type>&,
            const DimensionedField<Type, volMesh>&
        );

        //- Return a clone
        virtual tmp<fvPatchField<Type>> clone() const
        {
            return fvPatchField<Type>::Clone(*this);
        }

        //- Clone with an internal field reference
        virtual tmp<fvPatchField<Type>> clone
        (
            const DimensionedField<Type, volMesh>& iF
        ) const
        {
            return fvPatchField<Type>::Clone(*this, iF);
        }


    // Member Functions

        //- True: this patch field fixes a value.
        virtual bool fixesValue() const { return true; }


        // Evaluation functions

            //- Return the matrix diagonal coefficients corresponding to the
            //  evaluation of the value of this patchField with given weights
            virtual tmp<Field<Type>> valueInternalCoeffs
            (
                const tmp<scalarField>&
            ) const;

            //- Return the matrix source coefficients corresponding to the
            //  evaluation of the value of this patchField with given weights
            virtual tmp<Field<Type>> valueBoundaryCoeffs
            (
                const tmp<scalarField>&
            ) const;

            //- Return the matrix diagonal coefficients corresponding to the
            //  evaluation of the gradient of this patchField
            tmp<Field<Type>> gradientInternalCoeffs() const;

            //- Return the matrix source coefficients corresponding to the
            //  evaluation of the gradient of this patchField
            tmp<Field<Type>> gradientBoundaryCoeffs() const;


        //- Write includes "value" entry
        virtual void write(Ostream&) const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#ifdef NoRepository
    #include "calculatedFvPatchField.C"
#endif

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //