writerfilter: tdf#97417: don't insert numbering on end-of-section

... paragraph, it will be copied to every following paragraph.

(Before commit 2b78f2cd the properties
of the end-of-section paragraph would be overwritten by the properties
inside the header)

Change-Id: Ibe095cf873a09ef9e12f898d09b5fd6f61c914c9

sw/qa/extras/ooxmlimport/ooxmlimport.cxx

@@ -3001,6 +3001,18 @@ DECLARE_OOXMLIMPORT_TEST(testTdf60351, "tdf60351.docx")
     CPPUNIT_ASSERT_EQUAL(sal_Int32(0),   aPolygon[5].Y);
 }
 
+DECLARE_OOXMLIMPORT_TEST(testTdf97417, "section_break_numbering.docx")
+{
+    // paragraph with numbering and section break was removed by writerfilter
+    // but its numbering was copied to all following paragraphs
+    CPPUNIT_ASSERT_MESSAGE("first paragraph missing numbering",
+        getProperty<uno::Reference<container::XIndexAccess>>(getParagraph(1), "NumberingRules").is());
+    uno::Reference<beans::XPropertySet> const xProps(getParagraph(2), uno::UNO_QUERY_THROW);
+    CPPUNIT_ASSERT_MESSAGE("second paragraph erroneous numbering",
+        !xProps->getPropertyValue("NumberingRules").hasValue());
+
+}
+
 DECLARE_OOXMLIMPORT_TEST(testTdf95970, "tdf95970.docx")
 {
     // First shape: the rotation should be -12.94 deg, it should be mirrored.

writerfilter/source/dmapper/DomainMapper.cxx

@@ -3194,10 +3194,19 @@ void DomainMapper::lcl_utext(const sal_uInt8 * data_, size_t len)
             bool bSingleParagraph = m_pImpl->GetIsFirstParagraphInSection() && m_pImpl->GetIsLastParagraphInSection();
             // If the paragraph contains only the section properties and it has
             // no runs, we should not create a paragraph for it in Writer, unless that would remove the whole section.
-            bool bRemove = !m_pImpl->GetParaChanged() && m_pImpl->GetParaSectpr() && !bSingleParagraph;
+            bool bRemove = !m_pImpl->GetParaChanged() && m_pImpl->GetParaSectpr() && !bSingleParagraph && !m_pImpl->GetIsDummyParaAddedForTableInSection();
+            if (bRemove)
+            {
+                // tdf#97417 delete numbering of the paragraph
+                // it will be deleted anyway, and the numbering would be copied
+                // to the next paragraph in sw SplitNode and then be applied to
+                // every following paragraph
+                m_pImpl->GetTopContextOfType(CONTEXT_PARAGRAPH)->Erase(PROP_NUMBERING_RULES);
+                m_pImpl->GetTopContextOfType(CONTEXT_PARAGRAPH)->Erase(PROP_NUMBERING_LEVEL);
+            }
             m_pImpl->SetParaSectpr(false);
             m_pImpl->finishParagraph(m_pImpl->GetTopContextOfType(CONTEXT_PARAGRAPH));
-            if (bRemove && !m_pImpl->GetIsDummyParaAddedForTableInSection())
+            if (bRemove)
                 m_pImpl->RemoveLastParagraph();
         }
         else