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diff --git a/include/xmloff/unointerfacetouniqueidentifiermapper.hxx b/include/xmloff/unointerfacetouniqueidentifiermapper.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 .
+ */
+
+#ifndef INCLUDED_XMLOFF_UNOINTERFACETOUNIQUEIDENTIFIERMAPPER_HXX
+#define INCLUDED_XMLOFF_UNOINTERFACETOUNIQUEIDENTIFIERMAPPER_HXX
+
+#include <sal/config.h>
+#include <xmloff/dllapi.h>
+#include <sal/types.h>
+
+#include <deque>
+#include <map>
+#include <rtl/ustring.hxx>
+#include <com/sun/star/uno/XInterface.hpp>
+
+namespace comphelper
+{
+
+typedef ::std::map< OUString, css::uno::Reference< css::uno::XInterface > > IdMap_t;
+
+class XMLOFF_DLLPUBLIC UnoInterfaceToUniqueIdentifierMapper
+{
+    typedef std::deque< OUString > Reserved_t;
+
+public:
+    UnoInterfaceToUniqueIdentifierMapper();
+
+    /** returns a unique identifier for the given uno object. If a UNO object is
+        registered more than once, the returned identifier is always the same.
+    */
+    const OUString& registerReference( const css::uno::Reference< css::uno::XInterface >& rInterface );
+
+    /** registers the given uno object with the given identifier.
+
+        @returns
+            false, if the given identifier already exists and is not associated with the given interface
+    */
+    bool registerReference( const OUString& rIdentifier, const css::uno::Reference< css::uno::XInterface >& rInterface );
+
+    /** reserves an identifier for later registration.
+
+        @returns
+            false, if the identifier already exists
+      */
+    bool reserveIdentifier( const OUString& rIdentifier );
+
+    /** registers the given uno object with reserved identifier.
+      */
+    bool registerReservedReference( const OUString& rIdentifier, const css::uno::Reference< css::uno::XInterface >& rInterface );
+
+    /** @returns
+            the identifier for the given uno object. If this uno object is not already
+            registered, an empty string is returned
+    */
+    const OUString& getIdentifier( const css::uno::Reference< css::uno::XInterface >& rInterface ) const;
+
+    /** @returns
+        the uno object that is registered with the given identifier. If no uno object
+        is registered with the given identifier, an empty reference is returned.
+    */
+    const css::uno::Reference< css::uno::XInterface >& getReference( const OUString& rIdentifier ) const;
+
+private:
+    bool findReference( const css::uno::Reference< css::uno::XInterface >& rInterface, IdMap_t::const_iterator& rIter ) const;
+    bool findIdentifier( const OUString& rIdentifier, IdMap_t::const_iterator& rIter ) const;
+    bool findReserved( const OUString& rIdentifier ) const;
+    bool findReserved( const OUString& rIdentifier, Reserved_t::const_iterator& rIter ) const;
+
+    IdMap_t maEntries;
+    sal_uInt32 mnNextId;
+    Reserved_t maReserved;
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */