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diff --git a/xmloff/source/chart/SchXMLRegressionCurveObjectContext.hxx b/xmloff/source/chart/SchXMLRegressionCurveObjectContext.hxx
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+++ b/xmloff/source/chart/SchXMLRegressionCurveObjectContext.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 <com/sun/star/awt/Size.hpp>
+#include <xmloff/xmlictxt.hxx>
+#include <xmloff/SchXMLImportHelper.hxx>
+
+#include "transporttypes.hxx"
+
+class SchXMLRegressionCurveObjectContext : public SvXMLImportContext
+{
+public:
+    SchXMLRegressionCurveObjectContext(
+        SchXMLImportHelper& rImportHelper,
+        SvXMLImport& rImport,
+        std::vector< RegressionStyle >& rRegressionStyleVector,
+        css::uno::Reference< css::chart2::XDataSeries > xSeries,
+        const css::awt::Size & rChartSize );
+
+    virtual ~SchXMLRegressionCurveObjectContext() override;
+
+    virtual css::uno::Reference< css::xml::sax::XFastContextHandler > SAL_CALL createFastChildContext(
+        sal_Int32 nElement,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList >& AttrList ) override;
+    virtual void SAL_CALL startFastElement(
+        sal_Int32 nElement,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttrList ) override;
+
+private:
+
+    SchXMLImportHelper&                mrImportHelper;
+    css::uno::Reference<css::chart2::XDataSeries > mxSeries;
+    css::awt::Size                     maChartSize;
+    std::vector< RegressionStyle >&    mrRegressionStyleVector;
+};
+
+class SchXMLEquationContext : public SvXMLImportContext
+{
+public:
+    SchXMLEquationContext(
+        SchXMLImportHelper& rImportHelper,
+        SvXMLImport& rImport,
+        const css::awt::Size & rChartSize,
+        RegressionStyle & rRegressionStyle );
+
+    virtual ~SchXMLEquationContext() override;
+
+    virtual void SAL_CALL startFastElement (sal_Int32 Element,
+        const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs) override;
+
+private:
+    SchXMLImportHelper&                           mrImportHelper;
+    RegressionStyle&                              mrRegressionStyle;
+    css::awt::Size                                maChartSize;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */