protected boolean isRowWithinBounds(int row) {
        return row >= 0 && row < presenter.getVisibleItemCount();
    }
Checks that the row is within bounds of the view.

@param row row index to check
@return true if within bounds, false if not
stroom-core-client-widget/src/main/java/com/google/gwt/user/cellview/client/AbstractHasData.java