RTF export: handle \sautoupd

Change-Id: Ifddb3fda827aef0a95649bf074dad7d9cc797edb

sw/qa/extras/rtfexport/data/sautoupd.rtf

+{\rtf1
+{\stylesheet
+{\s1\sautoupd heading 1;}
+{\s2 heading 2;}
+}
+\pard\plain hello\par
+}

sw/qa/extras/rtfexport/rtfexport.cxx

@@ -867,6 +867,15 @@ DECLARE_RTFEXPORT_TEST(testMargmirror, "margmirror.rtf")
     CPPUNIT_ASSERT_EQUAL(style::PageStyleLayout_MIRRORED, getProperty<style::PageStyleLayout>(xPageStyle, "PageStyleLayout"));
 }
 
+DECLARE_RTFEXPORT_TEST(testSautoupd, "sautoupd.rtf")
+{
+    // \sautoupd was ignored during import and export.
+    uno::Reference<beans::XPropertySet> xHeading1(getStyles("ParagraphStyles")->getByName("Heading 1"), uno::UNO_QUERY);
+    CPPUNIT_ASSERT_EQUAL(true, getProperty<bool>(xHeading1, "IsAutoUpdate"));
+    uno::Reference<beans::XPropertySet> xHeading2(getStyles("ParagraphStyles")->getByName("Heading 2"), uno::UNO_QUERY);
+    CPPUNIT_ASSERT_EQUAL(false, getProperty<bool>(xHeading2, "IsAutoUpdate"));
+}
+
 CPPUNIT_PLUGIN_IMPLEMENT();
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/source/filter/ww8/rtfattributeoutput.cxx

@@ -1016,7 +1016,7 @@ void RtfAttributeOutput::DefaultStyle(sal_uInt16 /*nStyle*/)
 
 void RtfAttributeOutput::StartStyle(const OUString& rName, StyleType eType,
                                     sal_uInt16 nBase, sal_uInt16 nNext, sal_uInt16 /*nWwId*/, sal_uInt16 nId,
-                                    bool /* bAutoUpdate */)
+                                    bool bAutoUpdate)
 {
     SAL_INFO("sw.rtf", OSL_THIS_FUNC << ", rName = '" << rName << "'");
 
@@ -1036,6 +1036,9 @@ void RtfAttributeOutput::StartStyle(const OUString& rName, StyleType eType,
     m_aStylesheet.append(OOO_STRING_SVTOOLS_RTF_SNEXT);
     m_aStylesheet.append((sal_Int32)nNext);
 
+    if (bAutoUpdate)
+        m_aStylesheet.append(OOO_STRING_SVTOOLS_RTF_SAUTOUPD);
+
     m_rStyleName = rName;
     m_nStyleId = nId;
 }