/**
 * Factory to create WebXR buttons for AR, VR, Quicklook and Send to Quest
 * The buttons are created as HTMLButtonElements and can be added to the DOM.
 * The buttons will automatically hide when a XR session is started and show again when the session ends.
 */
export declare class WebXRButtonFactory {
    private static _instance;
    private static create;
    static getOrCreate(): WebXRButtonFactory;
    private get isSecureConnection();
    get quicklookButton(): HTMLButtonElement | undefined;
    private _quicklookButton?;
    get arButton(): HTMLButtonElement | undefined;
    private _arButton?;
    get vrButton(): HTMLButtonElement | undefined;
    private _vrButton?;
    get sendToQuestButton(): HTMLButtonElement | undefined;
    private _sendToQuestButton?;
    get qrButton(): HTMLButtonElement;
    /** get or create the quicklook button
     * Behaviour of the button:
     * - if the button is clicked a USDZExporter component will be searched for in the scene and if found, it will be used to export the scene to USDZ / Quicklook
    */
    createQuicklookButton(): HTMLButtonElement;
    /** get or create the WebXR AR button
     * @param init optional session init options
     * Behaviour of the button:
     * - if the device supports AR, the button will be visible and clickable
     * - if the device does not support AR, the button will be hidden
     * - if the device changes and now supports AR, the button will be visible
     */
    createARButton(init?: XRSessionInit): HTMLButtonElement;
    /** get or create the WebXR VR button
     * @param init optional session init options
     * Behaviour of the button:
     * - if the device supports VR, the button will be visible and clickable
     * - if the device does not support VR, the button will be hidden
     * - if the device changes and now supports VR, the button will be visible
    */
    createVRButton(init?: XRSessionInit): HTMLButtonElement;
    /** get or create the Send To Quest button
     * Behaviour of the button:
     * - if the button is clicked, the current URL will be sent to the Oculus Browser on the Quest
    */
    createSendToQuestButton(): HTMLButtonElement;
    /**
     * @deprecated please use ButtonsFactory.getOrCreate().createQRCode(). This method will be removed in a future update
     */
    createQRCode(): HTMLButtonElement;
    private updateSessionSupported;
    private hideElementDuringXRSession;
    private listenToXRSessionState;
}
/** @deprecated please use WebXRButtonFactory. This type will be removed in a future update */
export type NeedleWebXRHtmlElement = WebXRButtonFactory;