gab-social/app/javascript/gabsocial/components/timeline_queue_button_header.js

import { FormattedMessage } from 'react-intl'
import classNames from 'classnames'
import { shortNumberFormat } from '../utils/numbers'
import Button from './button'
import Text from './text'

export default class TimelineQueueButtonHeader extends PureComponent {

  static propTypes = {
    onClick: PropTypes.func.isRequired,
    count: PropTypes.number,
    itemType: PropTypes.string,
    floating: PropTypes.bool
  }

  static defaultProps = {
    count: 0,
    itemType: 'item',
  }

  render () {
    const { count, itemType, onClick } = this.props

    const hasItems = count > 0

    // : todo :

    const classes = classNames('timeline-queue-header', {
      'timeline-queue-header--extended': hasItems,
    })

    return (
      <div className={classes}>
        <a className='timeline-queue-header__btn' onClick={onClick}>
          {
            hasItems &&
            <FormattedMessage
              id='timeline_queue.label'
              defaultMessage='{count} new {type}'
              values={{
                count: shortNumberFormat(count),
                type: count === 1 ? itemType : `${itemType}s`,
              }}
            />
          }
        </a>
      </div>
    )
  }

}