export declare class PopoverContent {
    host: HTMLRPopoverContentElement;
    connectedCallback(): void;
    disconnectedCallback(): void;
    /**
     * Set focus on the first focusable element within the popover content
     * @returns {Promise<HTMLElement | null>} The focused element or null if no element is found
     */
    setFocus(): Promise<any>;
    /**
     * Remove focus from the first focusable element within the popover content
     * @returns {Promise<void>}
     */
    setBlur(): Promise<void>;
    private get activeElement();
    /**
     * Get all focusable elements within the popover content
     * @returns {Promise<HTMLElement[]>} Array of focusable elements
     */
    getActiveElements(): Promise<HTMLElement[]>;
    render(): any;
}