index.tsx

import { Icon } from 'antd';
import React from 'react';
import classNames from 'classnames';
import styles from './index.less';

export interface ITrendProps {
  colorful?: boolean;
  flag: 'up' | 'down';
  style?: React.CSSProperties;
  reverseColor?: boolean;
  className?: string;
}

const Trend: React.SFC<ITrendProps> = ({
  colorful = true,
  reverseColor = false,
  flag,
  children,
  className,
  ...rest
}) => {
  const classString = classNames(
    styles.trendItem,
    {
      [styles.trendItemGrey]: !colorful,
      [styles.reverseColor]: reverseColor && colorful,
    },
    className,
  );
  return (
    <div {...rest} className={classString} title={typeof children === 'string' ? children : ''}>
      <span>{children}</span>
      {flag && (
        <span className={styles[flag]}>
          <Icon type={`caret-${flag}`} />
        </span>
      )}
    </div>
  );
};

export default Trend;