// Created on: 2000-09-08
// Created by: data exchange team
// Copyright (c) 2000-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _XCAFDoc_Volume_HeaderFile
#define _XCAFDoc_Volume_HeaderFile

#include "Standard.hxx"
#include "Standard_Type.hxx"

#include "TDataStd_Real.hxx"
#include "Standard_OStream.hxx"
class Standard_GUID;
class TDF_Label;

//! attribute to store volume
class XCAFDoc_Volume : public TDataStd_Real
{

public:
  //! class methods
  //! =============
  Standard_EXPORT XCAFDoc_Volume();

  Standard_EXPORT static const Standard_GUID& GetID();

  Standard_EXPORT const Standard_GUID& ID() const override;

  //! Sets a value of volume
  Standard_EXPORT void Set(const double vol);

  //! Find, or create, an Volume attribute and set its value
  Standard_EXPORT static occ::handle<XCAFDoc_Volume> Set(const TDF_Label& label, const double vol);

  Standard_EXPORT double Get() const;

  //! Returns volume as argument
  //! returns false if no such attribute at the <label>
  Standard_EXPORT static bool Get(const TDF_Label& label, double& vol);

  Standard_EXPORT Standard_OStream& Dump(Standard_OStream& anOS) const override;

  //! Dumps the content of me into the stream
  Standard_EXPORT void DumpJson(Standard_OStream& theOStream, int theDepth = -1) const override;

  DEFINE_DERIVED_ATTRIBUTE(XCAFDoc_Volume, TDataStd_Real)
};

#endif // _XCAFDoc_Volume_HeaderFile