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diff --git a/starmath/source/mathmlexport.hxx b/starmath/source/mathmlexport.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_STARMATH_SOURCE_MATHMLEXPORT_HXX
+#define INCLUDED_STARMATH_SOURCE_MATHMLEXPORT_HXX
+
+#include <xmloff/xmlexp.hxx>
+#include <xmloff/xmltoken.hxx>
+
+class SfxMedium;
+class SmNode;
+class SmVerticalBraceNode;
+namespace com::sun::star {
+    namespace io {
+        class XOutputStream; }
+    namespace beans {
+        class XPropertySet; }
+}
+
+
+class SmXMLExportWrapper
+{
+    css::uno::Reference<css::frame::XModel> xModel;
+    bool bFlat;     //set true for export to flat .mml, set false for
+                        //export to a .sxm (or whatever) package
+public:
+    explicit SmXMLExportWrapper(css::uno::Reference<css::frame::XModel> const &rRef)
+        : xModel(rRef), bFlat(true) {}
+
+    bool Export(SfxMedium &rMedium);
+    void SetFlat(bool bIn) {bFlat = bIn;}
+
+    static bool WriteThroughComponent(
+        const css::uno::Reference< css::io::XOutputStream >&   xOutputStream,
+        const css::uno::Reference< css::lang::XComponent >&    xComponent,
+        css::uno::Reference< css::uno::XComponentContext > const & rxContext,
+        css::uno::Reference< css::beans::XPropertySet > const & rPropSet,
+        const char* pComponentName );
+
+    static bool WriteThroughComponent(
+        const css::uno::Reference< css::embed::XStorage >& xStor,
+        const css::uno::Reference< css::lang::XComponent >& xComponent,
+        const char* pStreamName,
+        css::uno::Reference< css::uno::XComponentContext > const & rxContext,
+        css::uno::Reference< css::beans::XPropertySet > const & rPropSet,
+        const char* pComponentName );
+};
+
+
+class SmXMLExport final : public SvXMLExport
+{
+    const SmNode *  pTree;
+    OUString        aText;
+    bool        bSuccess;
+
+    void ExportNodes(const SmNode *pNode, int nLevel);
+    void ExportTable(const SmNode *pNode, int nLevel);
+    void ExportLine(const SmNode *pNode, int nLevel);
+    void ExportExpression(const SmNode *pNode, int nLevel,
+                          bool bNoMrowContainer = false);
+    void ExportText(const SmNode *pNode);
+    void ExportMath(const SmNode *pNode);
+    void ExportBinaryHorizontal(const SmNode *pNode, int nLevel);
+    void ExportUnaryHorizontal(const SmNode *pNode, int nLevel);
+    void ExportBrace(const SmNode *pNode, int nLevel);
+    void ExportBinaryVertical(const SmNode *pNode, int nLevel);
+    void ExportBinaryDiagonal(const SmNode *pNode, int nLevel);
+    void ExportSubSupScript(const SmNode *pNode, int nLevel);
+    void ExportRoot(const SmNode *pNode, int nLevel);
+    void ExportOperator(const SmNode *pNode, int nLevel);
+    void ExportAttributes(const SmNode *pNode, int nLevel);
+    void ExportFont(const SmNode *pNode, int nLevel);
+    void ExportVerticalBrace(const SmVerticalBraceNode *pNode, int nLevel);
+    void ExportMatrix(const SmNode *pNode, int nLevel);
+    void ExportBlank(const SmNode *pNode);
+
+public:
+    SmXMLExport(
+        const css::uno::Reference< css::uno::XComponentContext >& rContext,
+        OUString const & implementationName, SvXMLExportFlags nExportFlags);
+
+    // XUnoTunnel
+    sal_Int64 SAL_CALL getSomething( const css::uno::Sequence< sal_Int8 >& rId ) override;
+    static const css::uno::Sequence< sal_Int8 > & getUnoTunnelId() throw();
+
+    void ExportAutoStyles_() override {}
+    void ExportMasterStyles_() override {}
+    void ExportContent_() override;
+    ErrCode exportDoc(enum ::xmloff::token::XMLTokenEnum eClass = ::xmloff::token::XML_TOKEN_INVALID) override;
+
+    virtual void GetViewSettings(css::uno::Sequence<css::beans::PropertyValue>& aProps) override;
+    virtual void GetConfigurationSettings(css::uno::Sequence<css::beans::PropertyValue>& aProps) override;
+
+    bool GetSuccess() const {return bSuccess;}
+};
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */