import { BaseViewer, Plugin, PluginConfig } from "@x-viewer/core";
/**
 * Uploader plugin config.
 */
export interface UploaderConfig extends Partial<PluginConfig> {
    formats?: string[];
    /**
     * Enable to drag and drop files.
     * Default to be true.
     */
    enableDragDropFile?: boolean;
}
/**
 * @hidden
 */
export declare class IUploader extends Plugin {
    protected cfg: UploaderConfig;
    protected input: HTMLInputElement;
    protected dropZone: HTMLDivElement;
    protected _formats: string[];
    /**
     * Callback function called when file loading starts.
     * @param event - Event object containing file information
     */
    onStart?: (event: {
        file: File;
        fileName: string;
    }) => void;
    /**
     * Callback function called when file upload and loaded to scene successfully.
     * @param event - Event object containing file information
     */
    onSuccess?: (event: {
        file: File;
        fileName: string;
    }) => void;
    /**
     * Callback function called when file upload fails.
     * @param event - Event object containing file information and error
     */
    onError?: (event: {
        file: File;
        fileName: string;
        error: Error | unknown;
    }) => void;
    constructor(viewer: BaseViewer, cfg: UploaderConfig);
    protected formats(): string[];
    protected uploadFiles(files: FileList): void;
    openFileBrowserToUpload(): void;
    destroy(): void;
    protected handleDragEnter: (e: DragEvent) => void;
    protected handleDragLeave: (e: DragEvent) => void;
    protected handleDragOver: (e: DragEvent) => void;
    protected handleDrop: (e: DragEvent) => void;
}