import React from 'react';
import { MenuProps } from '../Menu';
import { OUIAProps } from '../../helpers';
export interface DropdownPopperProps {
    /** Vertical direction of the popper. If enableFlip is set to true, this will set the initial direction before the popper flips. */
    direction?: 'up' | 'down';
    /** Horizontal position of the popper */
    position?: 'right' | 'left' | 'center' | 'start' | 'end';
    /** Custom width of the popper. If the value is "trigger", it will set the width to the dropdown toggle's width */
    width?: string | 'trigger';
    /** Minimum width of the popper. If the value is "trigger", it will set the min width to the dropdown toggle's width */
    minWidth?: string | 'trigger';
    /** Maximum width of the popper. If the value is "trigger", it will set the max width to the dropdown toggle's width */
    maxWidth?: string | 'trigger';
    /** Enable to flip the popper when it reaches the boundary */
    enableFlip?: boolean;
    /** The container to append the popper to. Defaults to document.body. */
    appendTo?: HTMLElement | (() => HTMLElement) | 'inline';
    /** Flag to prevent the popper from overflowing its container and becoming partially obscured. */
    preventOverflow?: boolean;
}
export interface DropdownToggleProps {
    /**  Dropdown toggle node. */
    toggleNode: React.ReactNode;
    /** Reference to the toggle. */
    toggleRef?: React.RefObject<HTMLButtonElement>;
}
/**
 * See the Menu documentation for additional props that may be passed.
 */
export interface DropdownProps extends MenuProps, OUIAProps {
    /** Anything which can be rendered in a dropdown. */
    children?: React.ReactNode;
    /** Classes applied to root element of dropdown. */
    className?: string;
    /** Dropdown toggle. The toggle should either be a renderer function which forwards the given toggle ref, or a direct ReactNode that should be passed along with the toggleRef property. */
    toggle: DropdownToggleProps | ((toggleRef: React.RefObject<any>) => React.ReactNode);
    /** Flag to indicate if menu is opened.*/
    isOpen?: boolean;
    /** Flag indicating the toggle should be focused after a selection. If this use case is too restrictive, the optional toggleRef property with a node toggle may be used to control focus. */
    shouldFocusToggleOnSelect?: boolean;
    /** Function callback called when user selects item. */
    onSelect?: (event?: React.MouseEvent<Element, MouseEvent>, value?: string | number) => void;
    /** Callback to allow the dropdown component to change the open state of the menu.
     * Triggered by clicking outside of the menu, or by pressing any keys specificed in onOpenChangeKeys. */
    onOpenChange?: (isOpen: boolean) => void;
    /** Keys that trigger onOpenChange, defaults to tab and escape. It is highly recommended to include Escape in the array, while Tab may be omitted if the menu contains non-menu items that are focusable. */
    onOpenChangeKeys?: string[];
    /** Indicates if the menu should be without the outer box-shadow. */
    isPlain?: boolean;
    /** Indicates if the menu should be scrollable. */
    isScrollable?: boolean;
    /** @hide Forwarded ref */
    innerRef?: React.Ref<any>;
    /** Value to overwrite the randomly generated data-ouia-component-id.*/
    ouiaId?: number | string;
    /** Set the value of data-ouia-safe. Only set to true when the component is in a static state, i.e. no animations are occurring. At all other times, this value must be false. */
    ouiaSafe?: boolean;
    /** z-index of the dropdown menu */
    zIndex?: number;
    /** Additional properties to pass to the Popper */
    popperProps?: DropdownPopperProps;
    /** Height of the dropdown menu */
    menuHeight?: string;
    /** Maximum height of dropdown menu */
    maxMenuHeight?: string;
    /** @beta Flag indicating the first menu item should be focused after opening the dropdown. */
    shouldFocusFirstItemOnOpen?: boolean;
    /** Flag indicating if scroll on focus of the first menu item should occur. */
    shouldPreventScrollOnItemFocus?: boolean;
    /** Time in ms to wait before firing the toggles' focus event. Defaults to 0 */
    focusTimeoutDelay?: number;
}
export declare const Dropdown: React.ForwardRefExoticComponent<DropdownProps & React.RefAttributes<any>>;
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