import React, { Component, type LegacyRef, type ReactNodeArray, type ComponentRef } from 'react';
import PropTypes from 'prop-types';
import Menu, { type MenuProps } from '../menu';
import VirtualList from '../virtual-list';
import type { CascaderMenuProps } from './types';
export default class CascaderMenu extends Component<CascaderMenuProps> {
    static propTypes: {
        prefix: PropTypes.Requireable<string>;
        className: PropTypes.Requireable<string>;
        useVirtual: PropTypes.Requireable<boolean>;
        children: PropTypes.Requireable<PropTypes.ReactNodeLike>;
    };
    virtualEl: InstanceType<typeof VirtualList> | null;
    menuEl: HTMLDivElement;
    componentDidMount(): void;
    scrollToSelectedItem(): void;
    renderMenu(items: ReactNodeArray, ref: LegacyRef<ComponentRef<typeof Menu>> | undefined, props: MenuProps): React.JSX.Element;
    saveMenuRef: (ref: HTMLDivElement) => void;
    saveVirtualRef: (ref: import("../config-provider/types").ConfiguredComponent<import("../virtual-list").VirtualListProps & import("../config-provider/types").ComponentCommonProps, {
        cache: {
            [key: number]: number;
        };
        cacheAdd: {
            [key: number]: number;
        };
        cachedScroll: number | null;
        unstable: boolean;
        updateCounter: number;
        updateCounterTimeoutId?: number | undefined;
        el: HTMLElement | null;
        items: React.ReactInstance | null;
        defaultItemHeight: number;
        scrollParent: Window | HTMLElement;
        componentDidMount(): void;
        componentDidUpdate(prevProps: import("../virtual-list").VirtualListProps): void;
        componentWillUnmount(): void;
        maybeSetState(b: import("../virtual-list/types").VirtualListState, cb: () => void): void;
        getEl(): {};
        getScrollParent(): (Window & typeof globalThis) | HTMLElement;
        getScroll(): number;
        setScroll(offset: number): void;
        getViewportSize(): number;
        getScrollSize(): number;
        getStartAndEnd(threshold?: number | undefined): {
            start: number;
            end: number;
        };
        updateFrameAndClearCache(cb: () => void): void;
        updateFrame(cb?: (() => void) | undefined): void;
        updateScrollParent(): void;
        updateVariableFrame(cb: () => void): void;
        getSpaceBefore(index: number, cache?: {
            [key: number]: number;
        }): number;
        cacheSizes(): void;
        getSizeOf(index: number): number | void;
        scrollTo(index: number): void;
        renderMenuItems(): React.ReactNode;
        render(): React.JSX.Element;
        context: any;
        setState<K extends keyof import("../virtual-list/types").VirtualListState>(state: import("../virtual-list/types").VirtualListState | ((prevState: Readonly<import("../virtual-list/types").VirtualListState>, props: Readonly<import("../virtual-list").VirtualListProps>) => import("../virtual-list/types").VirtualListState | Pick<import("../virtual-list/types").VirtualListState, K> | null) | Pick<import("../virtual-list/types").VirtualListState, K> | null, callback?: (() => void) | undefined): void;
        forceUpdate(callback?: (() => void) | undefined): void;
        readonly props: Readonly<import("../virtual-list").VirtualListProps> & Readonly<{
            children?: React.ReactNode;
        }>;
        state: Readonly<import("../virtual-list/types").VirtualListState>;
        refs: {
            [key: string]: React.ReactInstance;
        };
        shouldComponentUpdate?(nextProps: Readonly<import("../virtual-list").VirtualListProps>, nextState: Readonly<import("../virtual-list/types").VirtualListState>, nextContext: any): boolean;
        componentDidCatch?(error: Error, errorInfo: React.ErrorInfo): void;
        getSnapshotBeforeUpdate?(prevProps: Readonly<import("../virtual-list").VirtualListProps>, prevState: Readonly<import("../virtual-list/types").VirtualListState>): any;
        componentWillMount?(): void;
        UNSAFE_componentWillMount?(): void;
        componentWillReceiveProps?(nextProps: Readonly<import("../virtual-list").VirtualListProps>, nextContext: any): void;
        UNSAFE_componentWillReceiveProps?(nextProps: Readonly<import("../virtual-list").VirtualListProps>, nextContext: any): void;
        componentWillUpdate?(nextProps: Readonly<import("../virtual-list").VirtualListProps>, nextState: Readonly<import("../virtual-list/types").VirtualListState>, nextContext: any): void;
        UNSAFE_componentWillUpdate?(nextProps: Readonly<import("../virtual-list").VirtualListProps>, nextState: Readonly<import("../virtual-list/types").VirtualListState>, nextContext: any): void;
    }>) => void;
    render(): React.JSX.Element;
}