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diff --git a/chart2/source/inc/ModifyListenerCallBack.hxx b/chart2/source/inc/ModifyListenerCallBack.hxx
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+++ b/chart2/source/inc/ModifyListenerCallBack.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 <tools/link.hxx>
+#include <com/sun/star/util/XModifyBroadcaster.hpp>
+#include <com/sun/star/util/XModifyListener.hpp>
+#include "charttoolsdllapi.hxx"
+
+namespace chart
+{
+/** Use this class as a member if you want to listen on a XModifyBroadcaster
+without becoming a XModifyListener yourself
+ */
+
+class ModifyListenerCallBack_impl;
+
+class OOO_DLLPUBLIC_CHARTTOOLS ModifyListenerCallBack final
+{
+public:
+    explicit ModifyListenerCallBack(const Link<void*, void>& rCallBack);
+
+    ~ModifyListenerCallBack();
+
+    void startListening(
+        const ::com::sun::star::uno::Reference<::com::sun::star::util::XModifyBroadcaster>&
+            xBroadcaster);
+    SAL_DLLPRIVATE void stopListening();
+
+private: //methods
+    ModifyListenerCallBack(const ModifyListenerCallBack&) = delete;
+
+private: //member
+    ModifyListenerCallBack_impl* pModifyListener_impl;
+    css::uno::Reference<css::util::XModifyListener> m_xModifyListener;
+};
+
+} // namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */