/**
 * A multiline text editing component.  It is a a contenteditable div.  As text
 * is added to the component the onUpdate callback is executed to pass the
 * contents that have chnaged.
 *
 * ## Screen:
 * <img src="https://github.com/jmquigley/gadgets/blob/master/images/textarea.png" width="80%" />
 *
 * ## Examples:
 *
 * ```javascript
 * import {TextAra} from "gadgets";
 *
 * <TextArea
 *     maxRows={10}
 *     onUpdate={callback}
 *     value={initial text}
 * />
 * ```
 *
 * ## API
 * #### Events
 * - `onUpdate(text: string)` - Invoked when the text within the component is changed.
 * The current text in the component is passed to the callback.
 *
 * #### Styles
 * - `ui-textarea` - Placed on the `<div>` component that wraps the text component.
 *
 * #### Properties
 * - `rows=5 {number}` - The number of lines displayed within the component.
 * - `updateDelay=150 {number}` - The onUpdate function is called when the text is
 * updated.  This is a debounce delay to rate limit how often this function is
 * called when input into the control is fast.  The number is milliseconds.
 * - `value=null {string}` - a string value that will overwrite the contents of
 * the current component.
 *
 * @module TextArea
 */
import * as React from "react";
import { BaseComponent, BaseProps, BaseState } from "../shared";
export interface TextAreaProps extends BaseProps {
    onChange?: (e: React.ChangeEvent<HTMLDivElement>) => void;
    onUpdate?: (text: string) => void;
    rows?: number;
    updateDelay?: number;
    value?: string;
}
export interface TextAreaState extends BaseState {
    value: string;
}
export declare class TextArea extends BaseComponent<TextAreaProps, TextAreaState> {
    static readonly defaultProps: TextAreaProps;
    private _container;
    private _debounceUpdate;
    constructor(props: TextAreaProps);
    private handleChange;
    private handleRef;
    static getDerivedStateFromProps(props: TextAreaProps, state: TextAreaState): any;
    componentDidMount(): void;
    componentDidUpdate(_prevProps: TextAreaProps, prevState: TextAreaState): void;
    private updateContent;
    render(): JSX.Element;
}
export default TextArea;