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diff --git a/chart2/source/inc/WeakListenerAdapter.hxx b/chart2/source/inc/WeakListenerAdapter.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 <com/sun/star/lang/XEventListener.hpp>
+#include <com/sun/star/view/XSelectionChangeListener.hpp>
+#include <cppuhelper/weakref.hxx>
+#include <cppuhelper/implbase.hxx>
+
+namespace chart
+{
+
+/** Adapter that enables adding listeners as weak UNO references.  Thus, adding
+    an object as listener to a broadcaster does not increase its reference
+    count.
+
+    <p>The helper class, of course, is held as hard reference at the
+    broadcaster, but this should never be a problem as the adapter's life time
+    depends on no other object.</p>
+
+    <p>Note that in order to remove an object as listener, you have to remove
+    the same wrapper that you added, i.e., you should store the adapter as a
+    member in the adapted class for later use.</p>
+ */
+template< class Listener >
+    class WeakListenerAdapter : public
+    ::cppu::WeakImplHelper< Listener >
+{
+public:
+    explicit WeakListenerAdapter( const css::uno::Reference< Listener > & xListener ) :
+            m_xListener( xListener )
+    {}
+
+protected:
+    // ____ XEventListener (base of all listeners) ____
+    virtual void SAL_CALL disposing(
+        const css::lang::EventObject& Source ) override
+    {
+        css::uno::Reference< css::lang::XEventListener > xEventListener(
+                  css::uno::Reference< Listener >( m_xListener), css::uno::UNO_QUERY );
+        if( xEventListener.is())
+            xEventListener->disposing( Source );
+    }
+
+    css::uno::Reference< Listener > getListener() const
+    {
+        return m_xListener;
+    }
+
+private:
+    css::uno::WeakReference< Listener > m_xListener;
+};
+
+class WeakSelectionChangeListenerAdapter final :
+        public WeakListenerAdapter< css::view::XSelectionChangeListener >
+{
+public:
+    explicit WeakSelectionChangeListenerAdapter(
+        const css::uno::Reference< css::view::XSelectionChangeListener > & xListener );
+    virtual ~WeakSelectionChangeListenerAdapter() override;
+
+protected:
+    // ____ XSelectionChangeListener ____
+    virtual void SAL_CALL selectionChanged(
+        const css::lang::EventObject& aEvent ) override;
+};
+
+} //  namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */