61 lines
1.9 KiB
JavaScript
61 lines
1.9 KiB
JavaScript
import React from 'react';
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import { FormattedMessage } from 'react-intl';
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import PropTypes from 'prop-types';
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import Icon from 'flavours/twitter/components/icon';
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import { createPortal } from 'react-dom';
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export default class ColumnBackButton extends React.PureComponent {
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static contextTypes = {
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router: PropTypes.object,
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};
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static propTypes = {
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multiColumn: PropTypes.bool,
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};
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handleClick = (event) => {
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// if history is exhausted, or we would leave mastodon, just go to root.
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if (window.history.state) {
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const state = this.context.router.history.location.state;
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if (event.shiftKey && state && state.mastodonBackSteps) {
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this.context.router.history.go(-state.mastodonBackSteps);
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} else {
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this.context.router.history.goBack();
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}
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} else {
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this.context.router.history.push('/');
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}
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}
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render () {
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const { multiColumn } = this.props;
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const component = (
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<button onClick={this.handleClick} className='column-back-button'>
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<Icon id='chevron-left' className='column-back-button__icon' fixedWidth />
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<FormattedMessage id='column_back_button.label' defaultMessage='Back' />
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</button>
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);
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if (multiColumn) {
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return component;
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} else {
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// The portal container and the component may be rendered to the DOM in
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// the same React render pass, so the container might not be available at
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// the time `render()` is called.
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const container = document.getElementById('tabs-bar__portal');
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if (container === null) {
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// The container wasn't available, force a re-render so that the
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// component can eventually be inserted in the container and not scroll
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// with the rest of the area.
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this.forceUpdate();
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return component;
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} else {
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return createPortal(component, container);
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}
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}
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}
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}
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