--- /dev/null
+// Copyright (c) 2020 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 _Message_AttributeObject_HeaderFile
+#define _Message_AttributeObject_HeaderFile
+
+#include <Message_Attribute.hxx>
+
+class Standard_Transient;
+
+//! Alert object storing a transient object
+class Message_AttributeObject : public Message_Attribute
+{
+ DEFINE_STANDARD_RTTIEXT(Message_AttributeObject, Message_Attribute)
+public:
+ //! Constructor with string argument
+ Standard_EXPORT Message_AttributeObject (const Handle(Standard_Transient)& theObject,
+ const TCollection_AsciiString& theName = TCollection_AsciiString());
+
+ //! Returns object
+ //! @return the object instance
+ const Handle(Standard_Transient)& Object() const { return myObject; }
+
+ //! Sets the object
+ //! @param theObject an instance
+ void SetObject (const Handle(Standard_Transient)& theObject) { myObject = theObject; }
+
+ //! Dumps the content of me into the stream
+ virtual Standard_EXPORT void DumpJson (Standard_OStream& theOStream,
+ Standard_Integer theDepth = -1) const Standard_OVERRIDE;
+
+private:
+ Handle(Standard_Transient) myObject; //!< alert object
+};
+
+#endif // _Message_AttributeObject_HeaderFile