         typicalItem: uint(1 << 9),
         variableRowHeight: uint(1 << 10),
         dataTipField: uint(1 << 11),
-        dataTipFunction: uint(1 << 12)        
+        dataTipFunction: uint(1 << 12)
     };
     
     /**

            initializeGridRowBackground();
        
        if (instance == columnHeaderBar)
        {
            columnHeaderBar.dataProvider = columns;
            columnHeaderBar.owner = this;
        }
    }
    
    /**

            const allStyles:Boolean = (styleName == null || styleName == "styleName");
            
            if (allStyles || styleManager.isSizeInvalidatingStyle(styleName))
            {
                if (grid)
                {
                    grid.invalidateSize();
                    grid.clearGridLayoutCache(true);
                }
                if (columnHeaderBar)
                {
                    columnHeaderBar.layout.clearVirtualLayoutCache();
                    columnHeaderBar.invalidateSize();
                }
            }
            
            if (allStyles || (styleName == "alternatingRowColors"))
            {
                initializeGridRowBackground();
                if (grid && grid.layout)
                    grid.layout.clearVirtualLayoutCache();               
            }
            
            if (grid)
                grid.invalidateDisplayList();
            
            if (columnHeaderBar)
                columnHeaderBar.invalidateDisplayList();
        }
    }
    
