import { Menu, IMenuOptions, IMenuItem } from './Menu';
import { ILayoutBreakpoint, WindowResizeListener } from '../../Helpers/Index';
export declare enum CollapsingMode {
    Disabled = 0,
    Collapsed = 1,
    Expanded = 2,
    AdaptiveCollapsing = 3
}
type ItemActionMode = 'hover' | 'click';
export interface IBootstrapCollapsingMenuOptions extends IMenuOptions {
    itemAction?: ItemActionMode;
    collapsingMode?: CollapsingMode;
    collapseBreakpoint?: ILayoutBreakpoint;
    collapseIcon?: string;
}
export declare class BootstrapCollapsingMenu extends Menu {
    protected static HOVER_MODE_CSS_CLASS: string;
    protected static adaptivityCollapsingDelay: number;
    protected readonly itemActionMode: ItemActionMode;
    protected readonly collapsingMode: CollapsingMode;
    protected readonly collapseIconName: string;
    protected readonly collapseBreakpoint: ILayoutBreakpoint;
    protected readonly windowResizeListener: WindowResizeListener;
    protected readonly onWindowResizeEventHandler: () => void;
    protected readonly onToggleDropdownButtonClickHandler: (e: MouseEvent) => void;
    protected readonly onToggleDropdownButtonMouseEnterHandler: (e: MouseEvent) => void;
    protected collapseRoot: HTMLElement | undefined;
    protected collapseButton: HTMLElement | undefined;
    protected collapseDropdown: HTMLElement | undefined;
    protected currentOpeningSubMenu: HTMLElement | undefined;
    constructor(options: IBootstrapCollapsingMenuOptions);
    render(): never;
    updateItems(items: IMenuItem[]): Error;
    applyAdaptivityCollapsing(): void;
    updateActiveItemsState(): void;
    closeOpenedDropdown(targetElement: HTMLElement): void;
    protected forEachMenuItemRecursive(rootItems: IMenuItem[], action: (item: IMenuItem) => void): void;
    protected renderRoot(): void;
    protected renderItems(): void;
    protected changeDefaultDropdownBehaviorForNestedDropdown(): void;
    protected renderCollapseElements(): never;
    protected renderRootItems(): never;
    protected createRootItemWithNestedItems(item: IMenuItem & {
        items: IMenuItem[];
    }): HTMLLIElement;
    protected createRootItemElement(item: IMenuItem): HTMLLIElement;
    protected createNestedSubMenuItemElement(item: IMenuItem & {
        items: IMenuItem[];
    }): HTMLLIElement;
    protected createNestedItem(item: IMenuItem): HTMLLIElement;
    protected createDropdownMenu(item: IMenuItem & {
        items: IMenuItem[];
    }): HTMLUListElement;
    protected createItemIconElement(item: IMenuItem): HTMLElement;
    protected setItemContentAsDropdownToggler(itemContent: HTMLElement): void;
    protected applyStatesToItemElement(itemElement: HTMLElement, item: IMenuItem): void;
    protected attachEventsToItem(itemElement: HTMLElement, item: IMenuItem): void;
    protected isNestedItemsOwnerItem(item: IMenuItem): item is IMenuItem & {
        items: IMenuItem[];
    };
    protected moveRootItemsToCollapseDropdown(rootItemOrItems: Element | Iterable<Element>): void;
    protected moveRootItemsToRoot(rootItemOrItems: Element | Iterable<Element>): void;
    protected applyCollapsingViewForRootItem(rootItem: Element): void;
    protected applyExpandedViewForRootItem(rootItem: Element): void;
    protected isNeedCollapse(): boolean;
    protected isDropdownRectsIntersect(dropdownRect1: ClientRect, dropdownRect2: ClientRect, delta?: number): boolean;
    protected applyShadowsForOverlapingDropdownIfNeeded(openedDropdownElement: HTMLElement): void;
    protected onWindowResize(): void;
    protected onToggleDropdownButtonClick(e: MouseEvent): void;
    protected onToggleDropdownButtonMouseEnter(e: MouseEvent): void;
}
export {};