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diff --git a/dbaccess/source/ui/inc/undosqledit.hxx b/dbaccess/source/ui/inc/undosqledit.hxx
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+++ b/dbaccess/source/ui/inc/undosqledit.hxx
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+/* -*- 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 .
+ */
+#pragma once
+
+#include "GeneralUndo.hxx"
+#include <strings.hrc>
+
+namespace dbaui
+{
+    class OQueryTextView;
+
+    // OSqlEditUndoAct - Undo-class for changing sql text
+    class OSqlEditUndoAct final : public OCommentUndoAction
+    {
+        OQueryTextView& m_rOwner;
+        OUString    m_strNextText;
+
+        virtual void    Undo() override { ToggleText(); }
+        virtual void    Redo() override { ToggleText(); }
+
+        void ToggleText();
+    public:
+        OSqlEditUndoAct(OQueryTextView& rEdit) : OCommentUndoAction(STR_QUERY_UNDO_MODIFYSQLEDIT), m_rOwner(rEdit) { }
+
+        void SetOriginalText(const OUString& strText) { m_strNextText = strText; }
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */