redash/client/app/components/ParameterApplyButton.jsx

import React from 'react';
import PropTypes from 'prop-types';
import Button from 'antd/lib/button';
import Badge from 'antd/lib/badge';
import Tooltip from 'antd/lib/tooltip';
import { KeyboardShortcuts } from '@/services/keyboard-shortcuts';

function ParameterApplyButton({ paramCount, onClick }) {
  // show spinner when count is empty so the fade out is consistent
  const icon = !paramCount ? 'spinner fa-pulse' : 'check';

  return (
    <div className="parameter-apply-button" data-show={!!paramCount} data-test="ParameterApplyButton">
      <Badge count={paramCount}>
        <Tooltip title={paramCount ? `${KeyboardShortcuts.modKey} + Enter` : null}>
          <span>
            <Button onClick={onClick}>
              <i className={`fa fa-${icon}`} /> Apply Changes
            </Button>
          </span>
        </Tooltip>
      </Badge>
    </div>
  );
}

ParameterApplyButton.propTypes = {
  onClick: PropTypes.func.isRequired,
  paramCount: PropTypes.number.isRequired,
};

export default ParameterApplyButton;