export interface UseKeyboardNavigationParams {
    mode: 'modal' | 'embed';
    currentIndex: number;
    totalFiles: number;
    onNavigate?: (index: number) => void;
    onClose?: () => void;
    rootRef?: React.RefObject<HTMLDivElement | null>;
}
/**
 * 键盘导航 hook
 * - modal 模式：监听 window 的 keydown 事件
 * - embed 模式：仅监听根容器的 keydown 事件（需要容器获得焦点）
 */
export declare function useKeyboardNavigation({ mode, currentIndex, totalFiles, onNavigate, onClose, rootRef, }: UseKeyboardNavigationParams): void;
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