joplin/ElectronClient/gui/ToggleEditorsButton/ToggleEditorsButton.tsx

import * as React from 'react';
import styles_ from './styles';
import { ToolbarButtonInfo } from 'lib/services/commands/ToolbarButtonUtils';

export enum Value {
	Markdown = 'markdown',
	RichText = 'richText',
}

export interface Props {
	themeId: number,
	value: Value,
	toolbarButtonInfo: ToolbarButtonInfo,
}

export default function ToggleEditorsButton(props:Props) {
	const style = styles_(props);

	return (
		<button style={style.button} disabled={!props.toolbarButtonInfo.enabled} aria-label={props.toolbarButtonInfo.title} title={props.toolbarButtonInfo.title} type="button" className="tox-tbtn" aria-pressed="false" onClick={props.toolbarButtonInfo.onClick}>
			<div style={style.leftInnerButton}>
				<i style={style.leftIcon} className="fab fa-markdown"></i>
			</div>
			<div style={style.rightInnerButton}>
				<i style={style.rightIcon} className="fas fa-edit"></i>
			</div>
		</button>
	);
}