import * as React from 'react';
import { AnyRef, Environment, GetPropsCommonOptions, Overwrite } from '../../downshift.types';
export interface UseMultipleSelectionState<Item> {
    selectedItems: Item[];
    activeIndex: number;
}
export declare enum UseMultipleSelectionStateChangeTypes {
    SelectedItemClick = "__selected_item_click__",
    SelectedItemKeyDownDelete = "__selected_item_keydown_delete__",
    SelectedItemKeyDownBackspace = "__selected_item_keydown_backspace__",
    SelectedItemKeyDownNavigationNext = "__selected_item_keydown_navigation_next__",
    SelectedItemKeyDownNavigationPrevious = "__selected_item_keydown_navigation_previous__",
    DropdownKeyDownNavigationPrevious = "__dropdown_keydown_navigation_previous__",
    DropdownKeyDownBackspace = "__dropdown_keydown_backspace__",
    DropdownClick = "__dropdown_click__",
    FunctionAddSelectedItem = "__function_add_selected_item__",
    FunctionRemoveSelectedItem = "__function_remove_selected_item__",
    FunctionSetSelectedItems = "__function_set_selected_items__",
    FunctionSetActiveIndex = "__function_set_active_index__",
    FunctionReset = "__function_reset__"
}
export interface UseMultipleSelectionProps<Item> {
    selectedItems?: Item[];
    initialSelectedItems?: Item[];
    defaultSelectedItems?: Item[];
    itemToKey?: (item: Item | null) => any;
    getA11yStatusMessage?: (options: UseMultipleSelectionState<Item>) => string;
    stateReducer?: (state: UseMultipleSelectionState<Item>, actionAndChanges: UseMultipleSelectionStateChangeOptions<Item>) => Partial<UseMultipleSelectionState<Item>>;
    activeIndex?: number;
    initialActiveIndex?: number;
    defaultActiveIndex?: number;
    onActiveIndexChange?: (changes: UseMultipleSelectionActiveIndexChange<Item>) => void;
    onSelectedItemsChange?: (changes: UseMultipleSelectionSelectedItemsChange<Item>) => void;
    onStateChange?: (changes: UseMultipleSelectionStateChange<Item>) => void;
    keyNavigationNext?: string;
    keyNavigationPrevious?: string;
    environment?: Environment;
}
export interface UseMultipleSelectionStateChangeOptions<Item> extends UseMultipleSelectionDispatchAction<Item> {
    changes: Partial<UseMultipleSelectionState<Item>>;
}
export interface UseMultipleSelectionDispatchAction<Item> {
    type: UseMultipleSelectionStateChangeTypes;
    index?: number;
    selectedItem?: Item | null;
    selectedItems?: Item[];
    activeIndex?: number;
}
export interface UseMultipleSelectionStateChange<Item> extends Partial<UseMultipleSelectionState<Item>> {
    type: UseMultipleSelectionStateChangeTypes;
}
export interface UseMultipleSelectionActiveIndexChange<Item> extends UseMultipleSelectionStateChange<Item> {
    activeIndex: number;
}
export interface UseMultipleSelectionSelectedItemsChange<Item> extends UseMultipleSelectionStateChange<Item> {
    selectedItems: Item[];
}
export interface A11yRemovalMessage<Item> {
    itemToString: (item: Item) => string;
    resultCount: number;
    activeSelectedItem: Item;
    removedSelectedItem: Item;
    activeIndex: number;
}
export interface UseMultipleSelectionGetSelectedItemPropsOptions<Item> extends React.HTMLProps<HTMLElement> {
    refKey?: string;
    ref?: AnyRef;
    index?: number;
    selectedItem: Item;
}
export interface UseMultipleSelectionGetSelectedItemReturnValue {
    ref?: AnyRef;
    tabIndex: 0 | -1;
    onClick: React.MouseEventHandler;
    onKeyDown: React.KeyboardEventHandler;
}
export interface UseMultipleSelectionGetDropdownPropsOptions extends React.HTMLProps<HTMLElement> {
    preventKeyAction?: boolean;
    refKey?: string;
    ref?: AnyRef;
}
export interface UseMultipleSelectionGetDropdownReturnValue {
    ref?: AnyRef;
    onClick?: React.MouseEventHandler;
    onKeyDown?: React.KeyboardEventHandler;
}
export interface UseMultipleSelectionPropGetters<Item> {
    getDropdownProps: <Options>(options?: UseMultipleSelectionGetDropdownPropsOptions & Options, extraOptions?: GetPropsCommonOptions) => Omit<Overwrite<UseMultipleSelectionGetDropdownReturnValue, Options>, 'preventKeyAction'>;
    getSelectedItemProps: <Options>(options: UseMultipleSelectionGetSelectedItemPropsOptions<Item> & Options) => Omit<Overwrite<UseMultipleSelectionGetSelectedItemReturnValue, Options>, 'index' | 'selectedItem'>;
}
export interface UseMultipleSelectionActions<Item> {
    reset: () => void;
    addSelectedItem: (item: Item) => void;
    removeSelectedItem: (item: Item) => void;
    setSelectedItems: (items: Item[]) => void;
    setActiveIndex: (index: number) => void;
}
export type UseMultipleSelectionReturnValue<Item> = UseMultipleSelectionState<Item> & UseMultipleSelectionPropGetters<Item> & UseMultipleSelectionActions<Item>;
export interface UseMultipleSelectionInterface {
    <Item>(props?: UseMultipleSelectionProps<Item>): UseMultipleSelectionReturnValue<Item>;
    stateChangeTypes: {
        SelectedItemClick: UseMultipleSelectionStateChangeTypes.SelectedItemClick;
        SelectedItemKeyDownDelete: UseMultipleSelectionStateChangeTypes.SelectedItemKeyDownDelete;
        SelectedItemKeyDownBackspace: UseMultipleSelectionStateChangeTypes.SelectedItemKeyDownBackspace;
        SelectedItemKeyDownNavigationNext: UseMultipleSelectionStateChangeTypes.SelectedItemKeyDownNavigationNext;
        SelectedItemKeyDownNavigationPrevious: UseMultipleSelectionStateChangeTypes.SelectedItemKeyDownNavigationPrevious;
        DropdownKeyDownNavigationPrevious: UseMultipleSelectionStateChangeTypes.DropdownKeyDownNavigationPrevious;
        DropdownKeyDownBackspace: UseMultipleSelectionStateChangeTypes.DropdownKeyDownBackspace;
        DropdownClick: UseMultipleSelectionStateChangeTypes.DropdownClick;
        FunctionAddSelectedItem: UseMultipleSelectionStateChangeTypes.FunctionAddSelectedItem;
        FunctionRemoveSelectedItem: UseMultipleSelectionStateChangeTypes.FunctionRemoveSelectedItem;
        FunctionSetSelectedItems: UseMultipleSelectionStateChangeTypes.FunctionSetSelectedItems;
        FunctionSetActiveIndex: UseMultipleSelectionStateChangeTypes.FunctionSetActiveIndex;
        FunctionReset: UseMultipleSelectionStateChangeTypes.FunctionReset;
    };
}
export declare const useMultipleSelection: UseMultipleSelectionInterface;