TableRef: fully refresh table column names also for partial range

Only one cell of a range was broadcasted per area listener if multiple
cells were affected. We don't know if there were more.

We could set up cell listeners instead, but that's not worth the hassle,
header cells don't change that often and if changed the header range to
refresh will not be overly large.

Change-Id: I915101b809fc1824803f10e696c52fb2185117f7

sc/source/core/tool/dbdata.cxx

@@ -845,43 +845,10 @@ void ScDBData::RefreshTableColumnNames( ScDocument* pDoc, const ScRange& rRange
     if (!aIntersection.IsValid())
         return;
 
-    // Full refresh if sizes don't match.
-    if (maTableColumnNames.size() < static_cast<size_t>(aIntersection.aEnd.Col() - nStartCol + 1))
-    {
-        RefreshTableColumnNames( pDoc);
-        return;
-    }
-
-    // Update column names from cells in intersecting header range, but don't
-    // set names to empty string.
-    ScHorizontalCellIterator aIter( pDoc, nTable,
-            aIntersection.aStart.Col(), nStartRow, aIntersection.aEnd.Col(), nStartRow);
-    ScRefCellValue* pCell;
-    SCCOL nCol;
-    SCROW nRow;
-    while((pCell = aIter.GetNext( nCol, nRow)) != nullptr)
-    {
-        size_t nOff = nCol - nStartCol;
-        bool bEmpty = maTableColumnNames[nOff].isEmpty();
-        if (!pCell->hasString())
-            bEmpty &= true;
-        else
-        {
-            const OUString& rStr = pCell->getString( pDoc);
-            if (rStr.isEmpty())
-                bEmpty &= true;
-            else
-                maTableColumnNames[nOff] = rStr;
-        }
-        if (bEmpty)
-        {
-            OUString aColumn( ScGlobal::GetRscString(STR_COLUMN));
-            SetTableColumnName( maTableColumnNames, nOff, aColumn, nOff+1);
-        }
-    }
-
-    if (aIntersection == aHeaderRange)
-        mbTableColumnNamesDirty = false;
+    // Always fully refresh, only one cell of a range was broadcasted per area
+    // listener if multiple cells were affected. We don't know if there were
+    // more.
+    RefreshTableColumnNames( pDoc);
 }
 
 sal_Int32 ScDBData::GetColumnNameOffset( const OUString& rName ) const