/**
 * Determines how the size should be computed to achieve the one of
 * the visibility mode for the scrollbars.
 */
declare enum PolicyType {
    /**
     * The scrollbar is always visible. The view size is independent of
     * the content.
     */
    ALWAYS = 0,
    /**
     * The scrollbar will appear and disappear as necessary. For
     * example, when all of a #GtkTreeView can not be seen.
     */
    AUTOMATIC = 1,
    /**
     * The scrollbar should never appear. In this mode the content
     * determines the size.
     */
    NEVER = 2,
    /**
     * Don't show a scrollbar, but don't force the size to follow the
     * content. This can be used e.g. to make multiple scrolled windows
     * share a scrollbar. Since: 3.16
     */
    EXTERNAL = 3
}
export default PolicyType;