import * as React from 'react';
import { Component } from 'react';
interface UploadAreaProps {
    /**
     * The type of files allowed to be selected for upload
     */
    acceptFileType: FILETYPE;
    /**
     * The button text/CTA displayed to user to confirm upload; if no text is provided, CTA will read as "Upload File"
     */
    actionText?: string;
    /**
     * Set to `true` if there is a problem with the file the user supplied; this will display the button to "Select new (file type)"
     */
    fileNotCompatible?: boolean;
    /**
     * The instructional copy for the user
     */
    infoText?: string;
    /**
     * Set to `true` to render in a loading state while upload is in progress
     */
    isUploading?: boolean;
    /**
     * A callback function that will run when a file is dropped into the UploadArea
     */
    onDrop?: () => void;
    /**
     * A callback function that will run when the file data in the component is updated
     */
    onFileChange?: (arg: object) => void;
    /**
     * A callback function that will run when the user drops an incompatible file
     */
    onFileTypeError?: (arg: string) => void;
    /**
     * A callback function that will run when the user drops multiple files in the UploadArea
     */
    onMultipleFiles?: (arg: number) => void;
    /**
     * A callback function that will run when the user clicks to remove an uploaded file
     */
    onRemoveFile?: () => void;
    /**
     * A callback function that will run when the user clicks to replace a selected file
     */
    onReplace?: () => void;
    /**
     * A callback function that will run when the user clicks to select a file (initial state)
     */
    onSelectFile?: () => void;
    /**
     * A callback function that will run when the user clicks to select a new file (when `fileNotCompatible` is true)
     */
    onSelectNew?: () => void;
    /**
     * A callback function that will run when the upload is triggered
     */
    onUpload: (arg: object) => void;
    /**
     * Will render as an error message (overrides any validation error rendered by the component)
     */
    uploadError?: string;
    /**
     * Set this to `true` after the onUpload function has been called and the upload has been successful
     */
    uploadSuccessful?: boolean;
}
export declare enum FILETYPE {
    CSV = "text/csv"
}
interface UploadAreaState {
    dragging: boolean;
    dragCounter: number;
    error: string;
    fileData: File | {
        name: string;
        size: number;
    };
    showLoader: boolean;
}
/**
 * With this component, a user can drag and drop a file to upload.
 */
declare class UploadArea extends Component<UploadAreaProps, UploadAreaState> {
    static FILETYPE_TO_STRING_MAP: {
        "text/csv": string;
    };
    private dropRef;
    fileInput: React.RefObject<HTMLInputElement>;
    constructor(props: UploadAreaProps);
    componentDidMount(): void;
    componentDidUpdate(prevProps: UploadAreaProps, prevState: UploadAreaState): void;
    componentWillUnmount(): void;
    handleDragEvent: (e: DragEvent) => void;
    static getFileSizeString: (size: number) => string;
    handleDrop: (e: DragEvent) => void;
    handleSubmit: (e: React.FormEvent<HTMLFormElement>) => void;
    handleFiles: () => void;
    handleRemoveFile: () => void;
    handleReplaceFile: (e: MouseEvent) => void;
    handleSelectFile: (e: MouseEvent) => void;
    handleSelectNew: (e: MouseEvent) => void;
    static handleFileButton: (e: KeyboardEvent | MouseEvent) => void;
    render(): React.JSX.Element;
}
export default UploadArea;