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diff --git a/include/oox/core/fragmenthandler.hxx b/include/oox/core/fragmenthandler.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_OOX_CORE_FRAGMENTHANDLER_HXX
+#define INCLUDED_OOX_CORE_FRAGMENTHANDLER_HXX
+
+#include <com/sun/star/uno/Any.hxx>
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/xml/sax/XFastDocumentHandler.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <oox/core/contexthandler.hxx>
+#include <oox/core/relations.hxx>
+#include <oox/dllapi.h>
+#include <rtl/ref.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+
+namespace com::sun::star {
+    namespace io { class XInputStream; }
+    namespace xml::sax { class XFastAttributeList; }
+    namespace xml::sax { class XFastContextHandler; }
+    namespace xml::sax { class XLocator; }
+}
+
+namespace oox::core {
+
+class XmlFilterBase;
+
+/** Base data of a fragment.
+
+    This data is stored in a separate struct to make it accessible in every
+    child context handler of the fragment.
+ */
+struct FragmentBaseData
+{
+    XmlFilterBase&      mrFilter;
+    const OUString      maFragmentPath;
+    css::uno::Reference< css::xml::sax::XLocator >
+                        mxLocator;
+    RelationsRef        mxRelations;
+
+    explicit            FragmentBaseData(
+                            XmlFilterBase& rFilter,
+                            const OUString& rFragmentPath,
+                            RelationsRef const & xRelations );
+};
+
+
+/** Describes record identifiers used to create contexts in a binary stream.
+
+    If a record is used to start a new context, usually the record identifier
+    increased by 1 is used to mark the end of this context, e.g. the Excel
+    record SHEETDATA == 0x0091 starts the <sheetData> context, and the record
+    SHEETDATA_END == 0x0092 ends this context. But some records are used to
+    start a new context, though there is no identifier to end this context,
+    e.g. the ROW or EXTROW records. These record identifiers can be marked by
+    setting the mnEndRecId member of this struct to -1.
+ */
+struct RecordInfo
+{
+    sal_Int32           mnStartRecId;       ///< Record identifier for context start.
+    sal_Int32           mnEndRecId;         ///< Record identifier for context end, -1 = no record.
+};
+
+
+typedef ::cppu::ImplInheritanceHelper< ContextHandler, css::xml::sax::XFastDocumentHandler > FragmentHandler_BASE;
+
+class OOX_DLLPUBLIC FragmentHandler : public FragmentHandler_BASE
+{
+public:
+    explicit            FragmentHandler( XmlFilterBase& rFilter, const OUString& rFragmentPath );
+    virtual             ~FragmentHandler() override;
+
+    FragmentHandler(FragmentHandler const &) = default;
+    FragmentHandler(FragmentHandler &&) = default;
+    FragmentHandler & operator =(FragmentHandler const &) = delete; // due to ContextHandler
+    FragmentHandler & operator =(FragmentHandler &&) = delete; // due to ContextHandler
+
+    /** Returns the com.sun.star.xml.sax.XFastContextHandler interface of this context. */
+    css::uno::Reference< css::xml::sax::XFastContextHandler >
+                        getFastContextHandler() { return static_cast< ContextHandler* >( this ); }
+
+    // com.sun.star.xml.sax.XFastDocumentHandler interface --------------------
+
+    virtual void SAL_CALL startDocument() override;
+    virtual void SAL_CALL endDocument() override;
+    virtual void SAL_CALL processingInstruction( const OUString& rTarget, const OUString& rData ) override;
+    virtual void SAL_CALL setDocumentLocator( const css::uno::Reference< css::xml::sax::XLocator >& rxLocator ) override;
+
+    // com.sun.star.xml.sax.XFastContextHandler interface ---------------------
+
+    virtual void SAL_CALL startFastElement( ::sal_Int32 Element, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+    virtual void SAL_CALL startUnknownElement( const OUString& Namespace, const OUString& Name, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+    virtual void SAL_CALL endFastElement( ::sal_Int32 Element ) override;
+    virtual void SAL_CALL endUnknownElement( const OUString& Namespace, const OUString& Name ) override;
+    virtual css::uno::Reference< css::xml::sax::XFastContextHandler > SAL_CALL createFastChildContext( ::sal_Int32 Element, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+    virtual css::uno::Reference< css::xml::sax::XFastContextHandler > SAL_CALL createUnknownChildContext( const OUString& Namespace, const OUString& Name, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+    virtual void SAL_CALL characters( const OUString& aChars ) override;
+
+    // XML stream handling ----------------------------------------------------
+
+    /** Opens the fragment stream referred by the own fragment path. Derived
+        classes may provide specialized stream implementations. */
+    virtual css::uno::Reference< css::io::XInputStream >
+                        openFragmentStream() const;
+
+    // binary records ---------------------------------------------------------
+
+    virtual const RecordInfo* getRecordInfos() const;
+
+protected:
+    explicit            FragmentHandler( XmlFilterBase& rFilter, const OUString& rFragmentPath, RelationsRef xRelations );
+};
+
+typedef ::rtl::Reference< FragmentHandler > FragmentHandlerRef;
+
+
+} // namespace oox::core
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */