import { LitElement } from 'lit';
/**
 * Navigation is used to display the primary navigation in the sidebar
 * of an application. Navigation includes a list of links that users
 * use to move between sections of the application.
 *
 * @status ready
 * @category navigation
 * @slot - The main section of the sidebar, for holding nav components.
 * @slot header - The top section of the sidebar.
 * @slot footer - The bottom section of the sidebar.
 *
 * @fires {NordEvent} toggle - Dispatched whenever a nav item's state changes between open and closed.
 * @fires {NordEvent} activate - Dispatched whenever a nav item has been marked as active
 *
 * @cssprop [--n-navigation-background-color=var(--n-color-nav-surface)] - Controls the background color of the navigation element.
 */
export default class Navigation extends LitElement {
    static styles: import("lit").CSSResult[];
    private headerSlot;
    private events;
    private footerObserver;
    private allowItemsToRemainOpen;
    /**
     * Controls whether the navigations's footer has sticky positioning.
     */
    stickyFooter: boolean;
    connectedCallback(): void;
    disconnectedCallback(): void;
    /**
     * Observe the footer slot element for visibility changes.
     * Watches style and class attributes on the footer element itself, and
     * childList on the host to detect footer being added/removed (e.g. v-if).
     */
    private observeFooter;
    private get isFooterVisible();
    render(): import("lit").TemplateResult<1>;
    private handleActivate;
}
declare global {
    interface HTMLElementTagNameMap {
        'nord-navigation': Navigation;
    }
}