/**
 * Takes a string of a markup language (asciidoc, markdown, or
 * restructuredtext), converts it to HTML, and presents it in a webview control.
 *
 * The componet uses the [util.markup](https://github.com/jmquigley/util.markup)
 * package for parsing content into a proper HTML document.
 *
 * ## Screen:
 * <img src="https://github.com/jmquigley/gadgets/blob/master/images/preview.png" width="60%" />
 *
 * ## Examples:
 *
 * ```javascript
 * <Preview
 *     content={markup content string}
 *     css={css string to apply}
 *     mode={PreviewMode.markdown}
 * />
 * ```
 *
 * ## API
 * #### Events
 * - `onChange(content: string, html: string)` - invoked when the content is
 * changed in the control. It will contain the content parsed and the
 * resulting HTML, both as strings.
 *
 * #### Styles
 * - `ui-preview` - Applied to the div container surrounding the webview
 * component
 * - `ui-preview-content` - Applied to the underlying webview component.  This
 * is an id
 *
 * #### Properties
 * - `content="" {string}` - The markup document content as a string
 * - `css="" {string}` - The CSS that will be applied to the parsed content HTML.
 * - `mode=PreviewMode.markdown {PreviewMode}` - The markup format of the given
 * content.  It has three possible values: `PreviewMode.asciidoc`,
 * `PreviewMoode.markdown`, `PreviewMode.restructuredtext}`
 *
 * @module Preview
 */
/// <reference types="react" />
import { MarkupMode } from "util.markup";
import { BaseComponent, BaseProps, BaseState } from "../shared";
export declare const PreviewMode: {
    [x: number]: string;
    asciidoc: MarkupMode.asciidoc;
    markdown: MarkupMode.markdown;
    md: MarkupMode.markdown;
    restructuredtext: MarkupMode.restructuredtext;
    rst: MarkupMode.restructuredtext;
};
export declare type PreviewMode = MarkupMode;
export interface PreviewProps extends BaseProps {
    content?: string;
    css?: string;
    mode?: PreviewMode;
    onChange?: (content: string, html: string) => void;
}
export interface PreviewState extends BaseState {
    content: string;
    html: string;
}
export declare class Preview extends BaseComponent<PreviewProps, PreviewState> {
    static readonly defaultProps: PreviewProps;
    private static readonly parsers;
    private _preview;
    private _webview;
    constructor(props: PreviewProps);
    private handleRef;
    static getDerivedStateFromProps(props: PreviewProps, state: PreviewState): any;
    componentDidMount(): void;
    componentDidUpdate(_prevProps: PreviewProps, prevState?: PreviewState): void;
    private parseContent;
    render(): JSX.Element;
}
export default Preview;