metamask-extension/ui/pages/swaps/view-on-block-explorer/view-on-block-explorer.js

import React, { useContext } from 'react';
import PropTypes from 'prop-types';

import Box from '../../../components/ui/box';
import { I18nContext } from '../../../contexts/i18n';
import { getURLHostName } from '../../../helpers/utils/util';
import { MetaMetricsContext } from '../../../contexts/metametrics';
import { EVENT, EVENT_NAMES } from '../../../../shared/constants/metametrics';

export default function ViewOnBlockExplorer({
  blockExplorerUrl,
  sensitiveTrackingProperties,
}) {
  const t = useContext(I18nContext);
  const trackEvent = useContext(MetaMetricsContext);
  const blockExplorerHostName = getURLHostName(blockExplorerUrl);

  return (
    <Box marginTop={6} className="view-on-block-explorer">
      <button
        onClick={() => {
          trackEvent({
            event: EVENT_NAMES.EXTERNAL_LINK_CLICKED,
            category: EVENT.CATEGORIES.SWAPS,
            sensitiveProperties: sensitiveTrackingProperties,
            properties: {
              link_type: EVENT.EXTERNAL_LINK_TYPES.TRANSACTION_BLOCK_EXPLORER,
              location: 'Swap Transaction',
              url_domain: blockExplorerHostName,
            },
          });
          global.platform.openTab({ url: blockExplorerUrl });
        }}
      >
        {t('viewOnCustomBlockExplorer', [
          t('blockExplorerSwapAction'),
          blockExplorerHostName,
        ])}
      </button>
    </Box>
  );
}

ViewOnBlockExplorer.propTypes = {
  blockExplorerUrl: PropTypes.string.isRequired,
  sensitiveTrackingProperties: PropTypes.object.isRequired,
};