import { LitElement } from 'lit';
import { type ValidatorFn } from '../../utils/validators.js';
/**
 * File Upload component with drag & drop and progress tracking
 *
 * @fires file-select - Dispatched when files are selected
 * @fires file-remove - Dispatched when a file is removed
 * @fires upload-progress - Dispatched during file upload
 * @fires upload-complete - Dispatched when all uploads complete
 */
export declare class UIFileUpload extends LitElement {
    static styles: import("lit").CSSResult;
    accept: string[];
    maxSize: number;
    maxFiles: number;
    multiple: boolean;
    disabled: boolean;
    showPreview: boolean;
    autoUpload: boolean;
    /** Whether field is required */
    required: boolean;
    /** Error message to display */
    error: string;
    /** Whether to validate on change */
    validateOnChange: boolean;
    /** Custom validators */
    validators: ValidatorFn[];
    /**
     * Label for the file upload region
     */
    ariaLabel: string | null;
    private _files;
    private _isDragging;
    private _error;
    private dropzoneId;
    private inputId;
    private _handleKeyDown;
    private _formatFileSize;
    private _validateFile;
    private _createPreview;
    /** Validate the file upload */
    validate(): boolean;
    /** Reset validation state */
    resetValidation(): void;
    private _handleFiles;
    private _uploadFile;
    private _removeFile;
    private _handleDragOver;
    private _handleDragLeave;
    private _handleDrop;
    private _handleClick;
    private _handleInputChange;
    render(): import("lit-html").TemplateResult<1>;
}
declare global {
    interface HTMLElementTagNameMap {
        'ui-file-upload': UIFileUpload;
    }
}
//# sourceMappingURL=file-upload.d.ts.map