ODT export: handle style name of covered cells

This is the export side of commit
1001dbaef4dec2b51c25ed8343bab6910f1219e1 (ODT import: handle style name
of covered cells, 2021-03-19). We already exported the autostyle, but
<table:covered-table-cell> did not refer to it.

This is useful when the covering and the covered table cells have
different border settings.

Change-Id: I7773903fa62f53686f000473f7a03c68dd77602a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/112758
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

2 files changed, 21 insertions, 0 deletions

diff --git a/sw/qa/extras/odfimport/odfimport.cxx b/sw/qa/extras/odfimport/odfimport.cxx
index ac7e34a9ebdd..f6e657721f1c 100644
--- a/sw/qa/extras/odfimport/odfimport.cxx
+++ b/sw/qa/extras/odfimport/odfimport.cxx
@@ -1180,6 +1180,16 @@ CPPUNIT_TEST_FIXTURE(Test, testVerticallyMergedCellBorder)
     // right border, even if <table:covered-table-cell table:style-name="..."> explicitly disabled
     // it.
     CPPUNIT_ASSERT(!rA2Set.GetBox().GetRight());
+
+    // Given this document model, when exporting to ODT:
+    save("writer8", maTempFile);
+    mbExported = true;
+
+    // Then make sure the covered cell has a style.
+    xmlDocUniquePtr pXmlSettings = parseExport("content.xml");
+    // Without the accompanying fix in place, this test would have failed with:
+    // - In <...>, XPath '//table:covered-table-cell' no attribute 'style-name' exist
+    assertXPath(pXmlSettings, "//table:covered-table-cell", "style-name", "Table1.A2");
 }
 
 CPPUNIT_PLUGIN_IMPLEMENT();
diff --git a/sw/source/filter/xml/xmltble.cxx b/sw/source/filter/xml/xmltble.cxx
index ad79a92e3732..fb3674c955d0 100644
--- a/sw/source/filter/xml/xmltble.cxx
+++ b/sw/source/filter/xml/xmltble.cxx
@@ -924,6 +924,17 @@ void SwXMLExport::ExportTableLine( const SwTableLine& rLine,
             const sal_Int32 nRowSpan = pBox->getRowSpan();
             if( nRowSpan < 1 )
             {
+                // Export style of covered cell, it includes border information.
+                const SwFrameFormat* pFormat = pBox->GetFrameFormat();
+                if (pFormat)
+                {
+                    const OUString& sName = pFormat->GetName();
+                    if (!sName.isEmpty())
+                    {
+                        AddAttribute(XML_NAMESPACE_TABLE, XML_STYLE_NAME, EncodeStyleName(sName));
+                    }
+                }
+
                 SvXMLElementExport aElem2( *this, rTableInfo.GetPrefix(),
                                           XML_COVERED_TABLE_CELL, true,
                                           false );