import { LitElement } from 'lit';
import { Placement } from '@floating-ui/dom';
import './lit-icon.js';
/**
 * A reusable component for displaying document thumbnails
 * Shows actual thumbnail if available, falls back to file type icon
 * Shows larger preview on hover anchored next to the thumbnail (portaled to body)
 */
export declare class LitDocumentThumbnail extends LitElement {
    thumbnail?: string;
    fileType: string;
    size?: number;
    enableHoverPreview?: boolean;
    previewMaxWidth?: number;
    previewMaxHeight?: number;
    enableThumbnailDetail?: boolean;
    previewPlacement: Placement;
    private imageError;
    private showPreview;
    private longPressTimer;
    private touchStarted;
    private static activePreviewInstance;
    private portalEl;
    private cleanupAutoUpdate;
    static styles: import("lit").CSSResult;
    connectedCallback(): void;
    disconnectedCallback(): void;
    private createPortal;
    private removePortal;
    private showPortal;
    private hidePortal;
    private handleDocumentTouch;
    private handleImageError;
    private handleTouchStart;
    private handleTouchEnd;
    private closePreview;
    private handleTouchMove;
    private startAutoUpdate;
    private stopAutoUpdate;
    private updatePreviewPosition;
    private handleMouseEnter;
    private handleMouseLeave;
    render(): import("lit-html").TemplateResult<1>;
}
declare global {
    interface HTMLElementTagNameMap {
        'lit-document-thumbnail': LitDocumentThumbnail;
    }
}