gridfixes: fixed selection handling, part I

RowSelection::HandleMouseDown: always forward to the SelectionEngine,
even if the hit row is already selected.
This ensures proper de-selection handling in case of Ctrl+Click

Change-Id: I46fd63332101fd078c6341c94575dc69f48f8a68
Reviewed-on: https://gerrit.libreoffice.org/549Reviewed-by: Miklos Vajna <vmiklos@suse.cz>
Tested-by: Miklos Vajna <vmiklos@suse.cz>

svtools/source/table/mousefunction.cxx

@@ -207,27 +207,14 @@ namespace svt { namespace table
         TableCell const tableCell( i_tableControl.hitTest( i_event.GetPosPixel() ) );
         if ( tableCell.nRow >= 0 )
         {
-            bool bSetCursor = false;
             if ( i_tableControl.getSelEngine()->GetSelectionMode() == NO_SELECTION )
             {
-                bSetCursor = true;
+                i_tableControl.activateCell( tableCell.nColumn, tableCell.nRow );
+                handled = true;
             }
             else
             {
-                if ( !i_tableControl.isRowSelected( tableCell.nRow ) )
-                {
-                    handled = i_tableControl.getSelEngine()->SelMouseButtonDown( i_event );
-                }
-                else
-                {
-                    bSetCursor = true;
-                }
-            }
-
-            if ( bSetCursor )
-            {
-                i_tableControl.activateCell( tableCell.nColumn, tableCell.nRow );
-                handled = true;
+                handled = i_tableControl.getSelEngine()->SelMouseButtonDown( i_event );
             }
         }