--- /dev/null
+// Created on: 2021-04-27
+// Created by: Natalia ERMOLAEVA
+// Copyright (c) 2021 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 MessageModel_ItemBase_H
+#define MessageModel_ItemBase_H
+
+#include <Standard.hxx>
+#include <TopoDS_Shape.hxx>
+#include <inspector/TreeModel_ItemBase.hxx>
+
+class MessageModel_ItemBase;
+typedef QExplicitlySharedDataPointer<MessageModel_ItemBase> MessageModel_ItemBasePtr;
+
+//! \class MessageModel_ItemBase
+// \brief Declaration of the tree model base item.
+class MessageModel_ItemBase : public TreeModel_ItemBase
+{
+public:
+
+ //! Resets cached values
+ virtual void Reset() Standard_OVERRIDE { TreeModel_ItemBase::Reset(); }
+
+protected:
+
+ //! Initialize the current item. It creates a backup of the specific item information
+ virtual void initItem() const {};
+
+ //! Constructor
+ //! param theParent a parent item
+ //! \param theRow the item row positition in the parent item
+ //! \param theColumn the item column positition in the parent item
+ MessageModel_ItemBase (TreeModel_ItemBasePtr theParent, const int theRow, const int theColumn)
+ : TreeModel_ItemBase (theParent, theRow, theColumn) {}
+
+ //! Return root item
+ //! \return an item instance
+ TreeModel_ItemBasePtr GetRootItem() const;
+};
+
+#endif
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