/**
 * Constants for ribbon component
 */
export declare class RibbonConstants {
    static readonly VIEWS_GROUP_HEADER: string;
    static readonly ZOOM_GROUP_HEADER: string;
    static readonly SHOW_GROUP_HEADER: string;
    static readonly READ_ONLY_BUTTON_ID: string;
    static readonly PRINT_LAYOUT_BUTTON_ID: string;
    static readonly WEB_LAYOUT_BUTTON_ID: string;
    static readonly ZOOM_IN_BUTTON_ID: string;
    static readonly ZOOM_OUT_BUTTON_ID: string;
    static readonly HUNDRED_PERCENT_BUTTON_ID: string;
    static readonly ONE_PAGE_BUTTON_ID: string;
    static readonly PAGE_WIDTH_BUTTON_ID: string;
    static readonly RULER_CHECKBOX_ID: string;
    static readonly BOOKMARK_MARKERS_CHECKBOX_ID: string;
    static readonly NAVIGATION_PANE_CHECKBOX_ID: string;
    static readonly VIEW_GROUP_ICON_CSS: string;
    static readonly ZOOM_GROUP_ICON_CSS: string;
    static readonly READ_ONLY_ICON_CSS: string;
    static readonly PRINT_LAYOUT_ICON_CSS: string;
    static readonly WEB_LAYOUT_ICON_CSS: string;
    static readonly ZOOM_IN_ICON_CSS: string;
    static readonly ZOOM_OUT_ICON_CSS: string;
    static readonly FULL_PAGE_ICON_CSS: string;
    static readonly PAGE_WIDTH_ICON_CSS: string;
}