import React from 'react';
export type Overwrite<T, U> = Pick<T, Exclude<keyof T, keyof U>> & U;
export type AnyRef = React.Ref<any>;
export interface Environment {
    addEventListener: typeof window.addEventListener;
    removeEventListener: typeof window.removeEventListener;
    document: Document;
    Node: typeof window.Node;
}
export interface GetPropsCommonOptions {
    suppressRefError?: boolean;
}
export type Callback = () => void;
export interface DownshiftState<Item> {
    highlightedIndex: number | null;
    inputValue: string | null;
    isOpen: boolean;
    selectedItem: Item | null;
}
export declare enum StateChangeTypes {
    unknown = "__autocomplete_unknown__",
    mouseUp = "__autocomplete_mouseup__",
    itemMouseEnter = "__autocomplete_item_mouseenter__",
    keyDownArrowUp = "__autocomplete_keydown_arrow_up__",
    keyDownArrowDown = "__autocomplete_keydown_arrow_down__",
    keyDownEscape = "__autocomplete_keydown_escape__",
    keyDownEnter = "__autocomplete_keydown_enter__",
    clickItem = "__autocomplete_click_item__",
    blurInput = "__autocomplete_blur_input__",
    changeInput = "__autocomplete_change_input__",
    keyDownSpaceButton = "__autocomplete_keydown_space_button__",
    clickButton = "__autocomplete_click_button__",
    blurButton = "__autocomplete_blur_button__",
    controlledPropUpdatedSelectedItem = "__autocomplete_controlled_prop_updated_selected_item__",
    touchEnd = "__autocomplete_touchend__"
}
export interface DownshiftProps<Item> {
    initialSelectedItem?: Item;
    initialInputValue?: string;
    initialHighlightedIndex?: number | null;
    initialIsOpen?: boolean;
    defaultHighlightedIndex?: number | null;
    defaultIsOpen?: boolean;
    itemToString?: (item: Item | null) => string;
    selectedItemChanged?: (prevItem: Item, item: Item) => boolean;
    getA11yStatusMessage?: (options: A11yStatusMessageOptions<Item>) => string;
    onChange?: (selectedItem: Item | null, stateAndHelpers: ControllerStateAndHelpers<Item>) => void;
    onSelect?: (selectedItem: Item | null, stateAndHelpers: ControllerStateAndHelpers<Item>) => void;
    onStateChange?: (options: StateChangeOptions<Item>, stateAndHelpers: ControllerStateAndHelpers<Item>) => void;
    onInputValueChange?: (inputValue: string, stateAndHelpers: ControllerStateAndHelpers<Item>) => void;
    stateReducer?: (state: DownshiftState<Item>, changes: StateChangeOptions<Item>) => Partial<StateChangeOptions<Item>>;
    itemCount?: number;
    highlightedIndex?: number | null;
    inputValue?: string | null;
    isOpen?: boolean;
    selectedItem?: Item | null;
    children?: ChildrenFunction<Item>;
    id?: string;
    inputId?: string;
    labelId?: string;
    menuId?: string;
    getItemId?: (index?: number) => string;
    environment?: Environment;
    onOuterClick?: (stateAndHelpers: ControllerStateAndHelpers<Item>) => void;
    scrollIntoView?: (node: HTMLElement, menuNode: HTMLElement) => void;
    onUserAction?: (options: StateChangeOptions<Item>, stateAndHelpers: ControllerStateAndHelpers<Item>) => void;
    suppressRefError?: boolean;
}
export interface A11yStatusMessageOptions<Item> {
    highlightedIndex: number | null;
    inputValue: string;
    isOpen: boolean;
    itemToString: (item: Item | null) => string;
    previousResultCount: number;
    resultCount: number;
    highlightedItem: Item;
    selectedItem: Item | null;
}
export interface StateChangeOptions<Item> extends Partial<DownshiftState<Item>> {
    type: StateChangeTypes;
}
export type StateChangeFunction<Item> = (state: DownshiftState<Item>) => Partial<StateChangeOptions<Item>>;
export interface GetRootPropsOptions {
    refKey?: string;
    ref?: React.RefObject<any>;
}
export interface GetRootPropsReturnValue {
    'aria-expanded': boolean;
    'aria-haspopup': 'listbox';
    'aria-labelledby': string;
    'aria-owns': string | undefined;
    ref?: React.RefObject<any>;
    role: 'combobox';
}
export interface GetInputPropsOptions extends React.HTMLProps<HTMLInputElement> {
    disabled?: boolean;
}
export interface GetInputPropsReturnValue {
    'aria-autocomplete': 'list';
    'aria-activedescendant': string | undefined;
    'aria-controls': string | undefined;
    'aria-labelledby': string | undefined;
    autoComplete: 'off';
    id: string;
    onChange?: React.ChangeEventHandler;
    onChangeText?: React.ChangeEventHandler;
    onInput?: React.FormEventHandler;
    onKeyDown?: React.KeyboardEventHandler;
    onBlur?: React.FocusEventHandler;
    value: string;
}
export interface GetLabelPropsOptions extends React.HTMLProps<HTMLLabelElement> {
}
export interface GetLabelPropsReturnValue {
    htmlFor: string;
    id: string;
}
export interface GetToggleButtonPropsOptions extends React.HTMLProps<HTMLButtonElement> {
    disabled?: boolean;
    onPress?: (event: React.BaseSyntheticEvent) => void;
}
export interface GetToggleButtonPropsReturnValue {
    'aria-label': 'close menu' | 'open menu';
    'aria-haspopup': true;
    'data-toggle': true;
    onPress?: (event: React.BaseSyntheticEvent) => void;
    onClick?: React.MouseEventHandler;
    onKeyDown?: React.KeyboardEventHandler;
    onKeyUp?: React.KeyboardEventHandler;
    onBlur?: React.FocusEventHandler;
    role: 'button';
    type: 'button';
}
export interface GetMenuPropsOptions extends React.HTMLProps<HTMLElement>, GetPropsWithRefKey {
    ['aria-label']?: string;
}
export interface GetMenuPropsReturnValue {
    'aria-labelledby': string | undefined;
    ref?: React.RefObject<any>;
    role: 'listbox';
    id: string;
}
export interface GetPropsWithRefKey {
    refKey?: string;
}
export interface GetItemPropsOptions<Item> extends React.HTMLProps<HTMLElement> {
    index?: number;
    item: Item;
    isSelected?: boolean;
    disabled?: boolean;
}
export interface GetItemPropsReturnValue {
    'aria-selected': boolean;
    id: string;
    onClick?: React.MouseEventHandler;
    onMouseDown?: React.MouseEventHandler;
    onMouseMove?: React.MouseEventHandler;
    onPress?: React.MouseEventHandler;
    role: 'option';
}
export interface PropGetters<Item> {
    getRootProps: <Options>(options?: GetRootPropsOptions & Options, otherOptions?: GetPropsCommonOptions) => Overwrite<GetRootPropsReturnValue, Options>;
    getToggleButtonProps: <Options>(options?: GetToggleButtonPropsOptions & Options) => Overwrite<GetToggleButtonPropsReturnValue, Options>;
    getLabelProps: <Options>(options?: GetLabelPropsOptions & Options) => Overwrite<GetLabelPropsReturnValue, Options>;
    getMenuProps: <Options>(options?: GetMenuPropsOptions & Options, otherOptions?: GetPropsCommonOptions) => Overwrite<GetMenuPropsReturnValue, Options>;
    getInputProps: <Options>(options?: GetInputPropsOptions & Options) => Overwrite<GetInputPropsReturnValue, Options>;
    getItemProps: <Options>(options: GetItemPropsOptions<Item> & Options) => Omit<Overwrite<GetItemPropsReturnValue, Options>, 'index' | 'item'>;
}
export interface Actions<Item> {
    reset: (otherStateToSet?: Partial<StateChangeOptions<Item>>, cb?: Callback) => void;
    openMenu: (cb?: Callback) => void;
    closeMenu: (cb?: Callback) => void;
    toggleMenu: (otherStateToSet?: Partial<StateChangeOptions<Item>>, cb?: Callback) => void;
    selectItem: (item: Item | null, otherStateToSet?: Partial<StateChangeOptions<Item>>, cb?: Callback) => void;
    selectItemAtIndex: (index: number, otherStateToSet?: Partial<StateChangeOptions<Item>>, cb?: Callback) => void;
    selectHighlightedItem: (otherStateToSet?: Partial<StateChangeOptions<Item>>, cb?: Callback) => void;
    setHighlightedIndex: (index: number, otherStateToSet?: Partial<StateChangeOptions<Item>>, cb?: Callback) => void;
    clearSelection: (cb?: Callback) => void;
    clearItems: () => void;
    setItemCount: (count: number) => void;
    unsetItemCount: () => void;
    setState: (stateToSet: Partial<StateChangeOptions<Item>> | StateChangeFunction<Item>, cb?: Callback) => void;
    itemToString: (item: Item | null) => string;
}
export type ControllerStateAndHelpers<Item> = DownshiftState<Item> & PropGetters<Item> & Actions<Item>;
export type ChildrenFunction<Item> = (options: ControllerStateAndHelpers<Item>) => React.ReactNode;
export default class Downshift<Item = any> extends React.Component<DownshiftProps<Item>> {
    static stateChangeTypes: {
        unknown: StateChangeTypes.unknown;
        mouseUp: StateChangeTypes.mouseUp;
        itemMouseEnter: StateChangeTypes.itemMouseEnter;
        keyDownArrowUp: StateChangeTypes.keyDownArrowUp;
        keyDownArrowDown: StateChangeTypes.keyDownArrowDown;
        keyDownEscape: StateChangeTypes.keyDownEscape;
        keyDownEnter: StateChangeTypes.keyDownEnter;
        clickItem: StateChangeTypes.clickItem;
        blurInput: StateChangeTypes.blurInput;
        changeInput: StateChangeTypes.changeInput;
        keyDownSpaceButton: StateChangeTypes.keyDownSpaceButton;
        clickButton: StateChangeTypes.clickButton;
        blurButton: StateChangeTypes.blurButton;
        controlledPropUpdatedSelectedItem: StateChangeTypes.controlledPropUpdatedSelectedItem;
        touchEnd: StateChangeTypes.touchEnd;
    };
}
export declare function resetIdCounter(): void;