import { ApplicationCustomizerContext } from '@microsoft/sp-application-base';
import { IMenuItem } from '../../services/IMenuItem';
import { IMegaMenuApplicationCustomizerProperties } from './MegaMenuApplicationCustomizer';
export declare class MegaMenuRenderer {
    private context;
    private menuItems;
    private updateCallback;
    private _settingsPanel?;
    constructor(context: ApplicationCustomizerContext, menuItems: IMenuItem[], updateCallback: (data: IMegaMenuApplicationCustomizerProperties) => void);
    render(container: HTMLElement): void;
    private createSettingsItem();
    private openSettings();
    private createTopLevelItem(item);
    private createTopLevelElement(item);
    private createMegaMenu(parentItem);
    private createCategorySection(item);
    private attachEventListeners();
    private attachKeyboardNavigation(heading, megaMenu);
    private attachMouseEvents(heading, megaMenu);
    private attachFocusManagement(heading, megaMenu);
    private attachGlobalKeyboardNavigation();
    private openMegaMenu(trigger, menu);
    private closeMegaMenu(trigger, menu);
    private toggleMegaMenu(trigger, menu);
    private closeAllMegaMenus();
    private focusFirstLink(megaMenu);
    private createScreenReaderAnnouncer();
}