import { VzBaseElement } from '../core/base-element.js';
/**
 * <vz-hub> — a spatial 360 "lobby" that organizes VR content into clickable
 * poster panels. Selecting a panel plays that item in place (an inline
 * vz-video/vz-img with a "back to lobby" control); returning restores the
 * gallery. Enterprise-gated: without the license the lobby shows as a static
 * panorama with an upgrade note (graceful downgrade).
 *
 * @example
 * ```html
 * <vz-hub background="lobby.jpg" style="width:100%; aspect-ratio:16/9">
 *   <vz-hub-item src="intro.mp4" poster="intro.jpg" title="Intro"></vz-hub-item>
 *   <vz-hub-item src="tour.mp4" poster="tour.jpg" title="Factory tour"></vz-hub-item>
 * </vz-hub>
 * ```
 */
export declare class VzHubElement extends VzBaseElement {
    private renderer;
    private containerEl;
    private items;
    private panelManager;
    private controller;
    private controlsOverlay;
    private compass;
    private fullscreenButton;
    private vrButton;
    private xrManager;
    private cleanupFullscreen;
    private loader;
    private bgTexture;
    private playingEl;
    private hubLocked;
    protected onConnected(): void;
    protected onDisconnected(): void;
    protected onAttributeChanged(): void;
    protected onResize(): void;
    /**
     * Hub is an Enterprise feature; WebXR is gated separately. On license resolve:
     * - hub not licensed → lock to a static lobby panorama (panels removed, an
     *   upgrade note shown) — graceful downgrade, the background still renders.
     * - webxr not licensed → remove the VR button.
     */
    protected onLicenseResolved(): void;
    toggleFullscreen(): void;
    /** Show the lobby: background panorama + clickable panels (unless locked). */
    private showLobby;
    /** Play a selected item inline via a child vz-video/vz-img + a back control. */
    private playItem;
    /** Return to the lobby: tear down the inline player, re-render panels. */
    private returnToLobby;
    private showUpgradeOverlay;
    /** Parse <vz-hub-item> children into a normalized item list. */
    private parseItems;
}
/** Register the <vz-hub> custom element. */
export declare function registerHub(): void;
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