tdf#117403 RTF import: fix lost cell border of merged cell

If two source cells have different border types, then Writer takes the
second, Word takes the first. So mimic the MSO behavior explicitly in
dmapper.

Change-Id: I25adc62e024a929216c7b05fec44e1f602f28285
Reviewed-on: https://gerrit.libreoffice.org/53956
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

1 files changed, 31 insertions, 4 deletions

diff --git a/writerfilter/source/dmapper/DomainMapperTableHandler.cxx b/writerfilter/source/dmapper/DomainMapperTableHandler.cxx
index 2a701dc9bd8b..287028cff621 100644
--- a/writerfilter/source/dmapper/DomainMapperTableHandler.cxx
+++ b/writerfilter/source/dmapper/DomainMapperTableHandler.cxx
@@ -1030,21 +1030,48 @@ void DomainMapperTableHandler::endTable(unsigned int nestedTableLevel, bool bTab
                 {
                     if (!aMerges.empty())
                     {
+                        static const std::vector<OUStringLiteral> aBorderNames
+                            = { "TopBorder", "LeftBorder", "BottomBorder", "RightBorder" };
+
                         // Perform horizontal merges in reverse order, so the fact that merging changes the position of cells won't cause a problem for us.
                         for (std::vector<HorizontallyMergedCell>::reverse_iterator it = aMerges.rbegin(); it != aMerges.rend(); ++it)
                         {
                             uno::Reference<table::XCellRange> xCellRange(xTable, uno::UNO_QUERY_THROW);
-                            uno::Reference<beans::XPropertySet> xCell(xCellRange->getCellByPosition(it->m_nFirstCol, it->m_nFirstRow), uno::UNO_QUERY_THROW);
-                            OUString aFirst = xCell->getPropertyValue("CellName").get<OUString>();
+                            uno::Reference<beans::XPropertySet> xFirstCell(
+                                xCellRange->getCellByPosition(it->m_nFirstCol, it->m_nFirstRow),
+                                uno::UNO_QUERY_THROW);
+                            OUString aFirst
+                                = xFirstCell->getPropertyValue("CellName").get<OUString>();
                             // tdf#105852: Only try to merge if m_nLastCol is set (i.e. there were some merge continuation cells)
                             if (it->m_nLastCol != -1)
                             {
-                                xCell.set(xCellRange->getCellByPosition(it->m_nLastCol, it->m_nLastRow), uno::UNO_QUERY_THROW);
-                                OUString aLast = xCell->getPropertyValue("CellName").get<OUString>();
+                                // Save border properties of the first cell
+                                // before merge.
+                                table::BorderLine2 aBorderValues[4];
+                                for (size_t i = 0; i < aBorderNames.size(); ++i)
+                                    xFirstCell->getPropertyValue(aBorderNames[i])
+                                        >>= aBorderValues[i];
+
+                                uno::Reference<beans::XPropertySet> xLastCell(
+                                    xCellRange->getCellByPosition(it->m_nLastCol, it->m_nLastRow),
+                                    uno::UNO_QUERY_THROW);
+                                OUString aLast
+                                    = xLastCell->getPropertyValue("CellName").get<OUString>();
 
                                 uno::Reference<text::XTextTableCursor> xCursor = xTable->createCursorByCellName(aFirst);
                                 xCursor->gotoCellByName(aLast, true);
+
                                 xCursor->mergeRange();
+
+                                // Handle conflicting properties: mergeRange()
+                                // takes the last cell, Word takes the first
+                                // cell.
+                                for (size_t i = 0; i < aBorderNames.size(); ++i)
+                                {
+                                    if (aBorderValues[i].LineStyle != table::BorderLineStyle::NONE)
+                                        xFirstCell->setPropertyValue(
+                                            aBorderNames[i], uno::makeAny(aBorderValues[i]));
+                                }
                             }
                         }
                     }