import { OnInit, OnDestroy } from '@angular/core';
import { UploadFile } from 'ng-zorro-antd';
import { ControlWidget } from '../../widget';
export declare class FileWidget extends ControlWidget implements OnInit, OnDestroy {
    fileList: UploadFile[];
    buttonText: string;
    action: string;
    accept: string;
    limit: number;
    fsize: number;
    fileType: string;
    headers: {};
    listType: string;
    multiple: boolean;
    argName: string;
    showUploadList: boolean;
    withCredentials: boolean;
    private value$;
    ngOnInit(): void;
    change(): void;
    beforeUpload: (file: UploadFile) => boolean;
    ngOnDestroy(): void;
}