import * as React from 'react';
/**
 * @hidden
 */
export interface UploadDropZoneProps {
    addButtonComponent: any;
    statusComponent: any;
    disabled: boolean | undefined;
    onAdd: (files: FileList) => void;
}
/**
 * @hidden
 */
export declare class UploadDropZone extends React.Component<UploadDropZoneProps, {}> {
    private _documentInterval;
    private _elementInterval;
    private _lastDocumentDragOver;
    private _lastElementDragOver;
    private _documentActive;
    private _elementActive;
    private documentActive;
    private elementActive;
    componentDidMount(): void;
    componentWillUnmount(): void;
    onDocumentDragEnter: () => void;
    onDocumentDragOver: () => void;
    onElementDragEnter: () => void;
    onElementDragOver: (event: any) => void;
    onDrop: (event: any) => void;
    isDragOver: (prevDate: Date) => boolean;
    render(): JSX.Element;
}