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diff --git a/sc/source/ui/inc/spelldialog.hxx b/sc/source/ui/inc/spelldialog.hxx
new file mode 100644
index 000000000..655217bf8
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+++ b/sc/source/ui/inc/spelldialog.hxx
@@ -0,0 +1,93 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SC_SOURCE_UI_INC_SPELLDIALOG_HXX
+#define INCLUDED_SC_SOURCE_UI_INC_SPELLDIALOG_HXX
+
+#include <memory>
+#include <svx/SpellDialogChildWindow.hxx>
+#include <document.hxx>
+
+class ScConversionEngineBase;
+class ScSelectionState;
+class ScTabViewShell;
+class ScViewData;
+class ScRangeList;
+
+/** Specialized spell check dialog child window for Calc.
+
+    This derivation of the svx::SpellDialogChildWindow base class provides
+    Calc specific implementations of the virtual functions GetNextWrongSentence()
+    and ApplyChangedSentence().
+ */
+class ScSpellDialogChildWindow : public svx::SpellDialogChildWindow
+{
+public:
+    SFX_DECL_CHILDWINDOW_WITHID( ScSpellDialogChildWindow );
+
+    explicit            ScSpellDialogChildWindow( vcl::Window* pParent, sal_uInt16 nId,
+                            SfxBindings* pBindings, SfxChildWinInfo* pInfo );
+    virtual             ~ScSpellDialogChildWindow() override;
+
+    /** This method makes the one from the base class public so that
+        it can be called from the view shell when one is created.
+    */
+    void        InvalidateSpellDialog();
+
+protected:
+    /** Iterate over the sentences in all text shapes and stop at the
+        next sentence with spelling errors. While doing so the view
+        mode may be changed and text shapes are set into edit mode.
+    */
+    virtual svx::SpellPortions GetNextWrongSentence( bool bRecheck ) override;
+
+    /** This method is responsible for merging corrections made in the
+        spelling dialog back into the document.
+    */
+    virtual void        ApplyChangedSentence( const svx::SpellPortions& rChanged, bool bRecheck ) override;
+    virtual void        GetFocus() override;
+    virtual void        LoseFocus() override;
+
+private:
+    void                Reset();
+    void                Init();
+
+    bool                IsSelectionChanged();
+
+private:
+    typedef ::std::unique_ptr< ScConversionEngineBase >   ScConvEnginePtr;
+    typedef ::std::unique_ptr< ScSelectionState >         ScSelectionStatePtr;
+
+    ScConvEnginePtr     mxEngine;
+    ScDocumentUniquePtr mxUndoDoc;
+    ScDocumentUniquePtr mxRedoDoc;
+    ScSelectionStatePtr mxOldSel;           /// For cursor position in selection
+    tools::SvRef< ScRangeList >
+                        mxOldRangeList;     /// Original selection range for comparison.
+    ScTabViewShell*     mpViewShell;
+    ScViewData*         mpViewData;
+    ScDocShell*         mpDocShell;
+    ScDocument*         mpDoc;
+    bool                mbNeedNextObj;
+    bool                mbOldIdleEnabled;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */