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