@Override
            public void onBrowserEvent(final Context context,
                                       final Element elem,
                                       final T_ROW object,
                                       final NativeEvent event) {
                super.onBrowserEvent(context, elem, object, event);
                if (browserEventHandler != null) {
                    browserEventHandler.handle(context, elem, object, event);
                }
            }
Add a class to the cell if it is not enabled, so enabled and disabled rows appear
differently.

@param enabledFunction A function to return true if the row is enabled.
stroom-core-client-widget/src/main/java/stroom/data/grid/client/ColumnBuilder.java