import { CSSResultGroup, LitElement, TemplateResult } from 'lit';

declare const SbbNavigationSectionElement_base: import('../../core/mixins.js').Constructor<import('../../core/mixins.js').SbbUpdateSchedulerMixinType> & typeof LitElement;
/**
 * It can be used as a container for `sbb-navigation-list` within a `sbb-navigation`.
 *
 * @slot - Use the unnamed slot to add content into the `sbb-navigation-section`.
 */
export declare class SbbNavigationSectionElement extends SbbNavigationSectionElement_base {
    static styles: CSSResultGroup;
    /**
     * The label to be shown before the action list.
     */
    titleContent?: string;
    /**
     * The element that will trigger the navigation section.
     * Accepts both a string (id of an element) or an HTML element.
     */
    set trigger(value: string | HTMLElement | null);
    get trigger(): string | HTMLElement | null;
    private _trigger;
    /**
     * This will be forwarded as aria-label to the nav element and is read as a title of the navigation-section.
     */
    accessibilityLabel: string | undefined;
    /**
     * This will be forwarded as aria-label to the back button element.
     */
    accessibilityBackLabel: string | undefined;
    /**
     * The state of the navigation section.
     */
    private set _state(value);
    private get _state();
    private _firstLevelNavigation?;
    private _navigationSection;
    private _navigationSectionContainerElement;
    private _triggerElement;
    private _navigationSectionController;
    private _windowEventsController;
    private _language;
    constructor();
    /**
     * Opens the navigation section on trigger click.
     */
    open(): void;
    private _setActiveNavigationAction;
    private _closePreviousNavigationSection;
    /**
     * Closes the navigation section.
     */
    close(): void;
    private _removeTriggerClickListener;
    private _configure;
    private _setNavigationInert;
    private _onAnimationEnd;
    private _resetLists;
    private _attachWindowEvents;
    private _handleNavigationSectionClose;
    private _isCloseElement;
    private _isZeroToLargeBreakpoint;
    private _onKeydownEvent;
    private _setNavigationSectionFocus;
    private _checkActiveAction;
    private _handleNavigationSectionFocus;
    connectedCallback(): void;
    disconnectedCallback(): void;
    protected render(): TemplateResult;
}
declare global {
    interface HTMLElementTagNameMap {
        'sbb-navigation-section': SbbNavigationSectionElement;
    }
}
export {};
//# sourceMappingURL=navigation-section.d.ts.map