/// <reference types="react" />
import { KeyboardFocusKeys, KeyboardFocusedId, WithEventHandlers, WithKeyboardFocusCallback } from "../types.d";
/**
 * A simple hook to get the current keyboard focus context. You are most
 * likely looking for the `useKeyboardFocused` or `useKeyboardFocusedClassName`
 * hooks instead, but this can be used if you need to add custom keyboard-focus
 * ony behavior with the `setFocusedId` callback in the context.
 */
export declare function useKeyboardFocusContext(): import("../types").KeyboardFocusContextType;
/**
 * Checks if the provided id is the current focused element and the app is
 * in keyboard mode.
 *
 * @param id The id to check agains
 * @return true if the app is in keyboard mode and the id is the current keyboard
 * focus
 */
export declare function useKeyboardFocused(id: KeyboardFocusedId): boolean;
/**
 * This is a pretty nifty hook that will return a classname for an element
 * when it is the current keyboard focus in the app.
 *
 * @param id The id of the element
 * @param focusedClassName The class name to return when the element is focused.
 * This defaults to the base `@react-md/states` keyboard focus class name.
 * @return the focused class name or the empty stringstring | nule
 */
export declare function useKeyboardFocusedClassName(id: KeyboardFocusedId, focusedClassName?: string): string;
/**
 * All the options for a custom keyboard focus handler.
 */
export interface KeyboardFocusOptions<E extends HTMLElement = HTMLElement, H = {}> extends KeyboardFocusKeys, WithEventHandlers<E, H>, Required<WithKeyboardFocusCallback> {
}
interface KeyboardFocusResult<E extends HTMLElement = HTMLElement, H = {}> {
    handlers: H & {
        onKeyDown: (event: React.KeyboardEvent<E>) => void;
    };
}
/**
 * Creates an `onKeyDown` event handler to apply to an element so that
 * keyboard focus behavior can be implemented.
 *
 * This is really a event handler function, but it uses the a hook to
 * memoize transforming the different keys so it is named like a hook.
 *
 * @param options All the keyboard focus event options
 * @return an keydown handler that can be used on any react element
 */
export declare function useKeyboardFocusEventHandler<E extends HTMLElement = HTMLElement, H = {}>({ handlers, onKeyboardFocus, incrementKeys, decrementKeys, jumpToFirstKeys, jumpToLastKeys, }: KeyboardFocusOptions<E, H>): KeyboardFocusResult<E, H>;
export {};