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diff --git a/include/comphelper/container.hxx b/include/comphelper/container.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_COMPHELPER_CONTAINER_HXX
+#define INCLUDED_COMPHELPER_CONTAINER_HXX
+
+#include <vector>
+#include <com/sun/star/uno/Reference.hxx>
+#include <comphelper/comphelperdllapi.h>
+
+
+namespace comphelper
+{
+
+
+//= IndexAccessIterator
+
+/** an iterator that iterates through all elements, starting from an XIndexAccess (pre-order)
+*/
+class COMPHELPER_DLLPUBLIC IndexAccessIterator
+{
+protected:
+    css::uno::Reference< css::uno::XInterface>    m_xStartingPoint;
+
+    css::uno::Reference< css::uno::XInterface>    m_xCurrentObject;
+        // The current object
+    ::std::vector<sal_Int32>                      m_arrChildIndizies;
+
+        // I'm moving through a tree, but its elements have no GetNextSibling,
+        // so I have to remember where each child is in relation to its parent.
+        // That is the path from the root node to m_xCurrentObject
+
+public:
+    IndexAccessIterator(css::uno::Reference< css::uno::XInterface> xStartingPoint);
+
+    virtual ~IndexAccessIterator();
+
+    css::uno::Reference< css::uno::XInterface> const &    Next();
+
+    virtual void Invalidate() { m_xCurrentObject = nullptr; }
+
+protected:
+    virtual bool ShouldHandleElement(const css::uno::Reference< css::uno::XInterface>& /*rElement*/) { return true; }
+
+        // This can be used to exclude certain elements; elements for which
+        // this function returns sal_True will be simply skipped.
+        // If this element is returned from Next(), then one can get
+        // here get a little more information on the element.
+        // That's why this method is not const.
+    virtual bool ShouldStepInto(const css::uno::Reference< css::uno::XInterface>& /*xContainer*/) const { return true; }
+};
+
+
+}   // namespace comphelper
+
+
+#endif // INCLUDED_COMPHELPER_CONTAINER_HXX
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */