import { LitElement } from 'lit';
export declare class WebUiContextMenu extends LitElement {
    static styles: import('lit').CSSResult;
    disabled: boolean;
    noScrollLock: boolean;
    private _isOpen;
    private _x;
    private _y;
    private _activeSubmenus;
    private _activeSubmenuItems;
    private readonly _closingSubmenus;
    private _submenuTimer?;
    private _ignoreOutsideClick;
    private _ignoreOutsideClickTimer?;
    private _hoverCleanupFns;
    private _menu?;
    private readonly _scrollLock;
    private readonly _userOpenChange;
    private _restoreFocusTarget?;
    private _shouldOpenInstantly;
    get isOpen(): boolean;
    connectedCallback(): void;
    disconnectedCallback(): void;
    protected updated(changed: Map<string, unknown>): void;
    /**
     * 在指定视口坐标打开菜单。
     * @param x 水平坐标（px）。
     * @param y 垂直坐标（px）。
     * @returns 无返回值；命令式打开不派发 `open-change` 事件。
     */
    openAt(x: number, y: number): void;
    private _openAt;
    /**
     * 关闭菜单。
     * @returns 无返回值；命令式关闭不派发 `open-change` 事件。
     */
    close(): void;
    private readonly _closeFromUser;
    private _positionMenu;
    private _focusFirstItem;
    private _setupMenuItems;
    private _returnItemsToSlot;
    private _closeMenuAfterPresence;
    private _hideMenuItems;
    private _openSubmenu;
    private _closeSubmenusFrom;
    private _closeSubmenuAfterPresence;
    private _restoreSubmenuItems;
    private _restoreClosingSubmenus;
    private _getItemLevel;
    private _positionSubmenu;
    private _dispatchChange;
    private _isInsideShadowRoot;
    private _onContextMenu;
    private _onContextMenuOutside;
    private _onKeydown;
    private _onClickOutside;
    private _onMenuClick;
    private _getLevelItems;
    private _bindLevelHovers;
    private _ignoreCurrentOutsideClick;
    private _onWheel;
    private _onTouchMove;
    private _onDocumentKeydown;
    private _closeLastSubmenuOrMenu;
    private _preventBackgroundScroll;
    private _syncScrollLock;
    private _getEnabledLevelItems;
    private _getFocusedItem;
    private _getFocusedLevel;
    private _focusMenuItem;
    private _isMenuPanelEvent;
    render(): import('lit').TemplateResult<1>;
    readonly $events: {
        'open-change': CustomEvent<{
            open: boolean;
        }>;
    };
}
declare global {
    interface HTMLElementTagNameMap {
        'web-ui-context-menu': WebUiContextMenu;
    }
}