tootlab-mastodon/app/javascript/mastodon/components/load_gap.tsx

import { useCallback } from 'react';

import type { InjectedIntl } from 'react-intl';
import { injectIntl, defineMessages } from 'react-intl';

import { Icon } from 'mastodon/components/icon';

const messages = defineMessages({
  load_more: { id: 'status.load_more', defaultMessage: 'Load more' },
});

interface Props {
  disabled: boolean;
  maxId: string;
  onClick: (maxId: string) => void;
  intl: InjectedIntl;
}

export const LoadGap = injectIntl<Props>(
  ({ disabled, maxId, onClick, intl }) => {
    const handleClick = useCallback(() => {
      onClick(maxId);
    }, [maxId, onClick]);

    return (
      <button
        className='load-more load-gap'
        disabled={disabled}
        onClick={handleClick}
        aria-label={intl.formatMessage(messages.load_more)}
      >
        <Icon id='ellipsis-h' />
      </button>
    );
  }
);