import React from 'react'; import { FormattedMessage } from 'react-intl'; import PropTypes from 'prop-types'; import Icon from 'mastodon/components/icon'; export default class ColumnBackButton extends React.PureComponent { static contextTypes = { router: PropTypes.object, }; handleClick = () => { if (window.history && window.history.length === 1) { this.context.router.history.push('/'); } else { this.context.router.history.goBack(); } } render () { return ( <button onClick={this.handleClick} className='column-back-button'> <Icon id='chevron-left' className='column-back-button__icon' fixedWidth /> <FormattedMessage id='column_back_button.label' defaultMessage='Back' /> </button> ); } }