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diff --git a/framework/inc/uielement/itemcontainer.hxx b/framework/inc/uielement/itemcontainer.hxx
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+++ b/framework/inc/uielement/itemcontainer.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 <helper/shareablemutex.hxx>
+
+#include <com/sun/star/container/XIndexContainer.hpp>
+#include <com/sun/star/beans/PropertyValue.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <vector>
+
+namespace framework
+{
+class ConstItemContainer;
+class ItemContainer final : public ::cppu::WeakImplHelper< css::container::XIndexContainer>
+{
+    friend class ConstItemContainer;
+
+    public:
+        ItemContainer( const ShareableMutex& );
+        ItemContainer( const ConstItemContainer& rConstItemContainer, const ShareableMutex& rMutex );
+        ItemContainer( const css::uno::Reference< css::container::XIndexAccess >& rItemAccessContainer, const ShareableMutex& rMutex );
+        virtual ~ItemContainer() override;
+
+        //  XInterface, XTypeProvider
+
+        // XUnoTunnel
+        static const css::uno::Sequence< sal_Int8 >&   getUnoTunnelId() noexcept;
+
+        // XIndexContainer
+        virtual void SAL_CALL insertByIndex( sal_Int32 Index, const css::uno::Any& Element ) override;
+
+        virtual void SAL_CALL removeByIndex( sal_Int32 Index ) override;
+
+        // XIndexReplace
+        virtual void SAL_CALL replaceByIndex( sal_Int32 Index, const css::uno::Any& Element ) override;
+
+        // XIndexAccess
+        virtual sal_Int32 SAL_CALL getCount() override;
+
+        virtual css::uno::Any SAL_CALL getByIndex( sal_Int32 Index ) override;
+
+        // XElementAccess
+        virtual css::uno::Type SAL_CALL getElementType() override
+        {
+            return cppu::UnoType<css::uno::Sequence< css::beans::PropertyValue >>::get();
+        }
+
+        virtual sal_Bool SAL_CALL hasElements() override;
+
+    private:
+        void copyItemContainer( const std::vector< css::uno::Sequence< css::beans::PropertyValue > >& rSourceVector, const ShareableMutex& rMutex );
+        css::uno::Reference< css::container::XIndexAccess > deepCopyContainer( const css::uno::Reference< css::container::XIndexAccess >& rSubContainer, const ShareableMutex& rMutex );
+
+        mutable ShareableMutex                                                               m_aShareMutex;
+        std::vector< css::uno::Sequence< css::beans::PropertyValue > > m_aItemVector;
+};
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */