import { LitElement, type PropertyValues } from 'lit';
import { UploadFile } from './types.js';
declare const FileUpload_base: (new (...args: any[]) => import("@nuralyui/common/mixins").DependencyAware) & (new (...args: any[]) => import("@nuralyui/common/mixins").ThemeAware) & (new (...args: any[]) => import("@nuralyui/common/mixins").EventHandlerCapable) & (new (...args: any[]) => import("packages/common/src/shared/base-mixin.js").LightDomContent) & typeof LitElement;
export declare class FileUpload extends FileUpload_base {
    static useShadowDom: boolean;
    static styles: import("lit").CSSResult;
    /** Explicit theme from data-theme attribute (provided by ThemeAwareMixin) */
    explicitTheme: string | null;
    accept: string;
    multiple: boolean;
    drag: boolean;
    tip: string;
    limit: number;
    preview: boolean;
    generatePreviewOnUpload: boolean;
    fileList: UploadFile[];
    isDragOver: boolean;
    showDragArea: boolean;
    inputElement: HTMLInputElement | null;
    dragCounter: number;
    previewImage: string | null;
    connectedCallback(): void;
    updated(changedProperties: PropertyValues): void;
    private _updateThemeAttribute;
    disconnectedCallback(): void;
    firstUpdated(_changedProperties: PropertyValues): void;
    private _onDocumentDragEnter;
    private _onDocumentDragLeave;
    private _onDocumentDrop;
    private _onDocumentDragOver;
    private _onDrop;
    private _onClick;
    private _onChange;
    private _handleFiles;
    updateFileStatus(uid: string, status: 'ready' | 'uploading' | 'success' | 'error', percentage?: number): void;
    private _updateFile;
    private _removeFile;
    private _dispatchEvent;
    private _showPreview;
    private _closePreview;
    render(): import("lit-html").TemplateResult<1>;
}
export {};
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