content: import React from 'react';
  import Dropdown, { DropdownTrigger, DropdownContent } from 'react-simple-dropdown';
  import PropTypes from 'prop-types';
  
  class DropdownMenu extends React.PureComponent {
  
    static contextTypes = {
      router: PropTypes.object,
    };
  
    static propTypes = {
      icon: PropTypes.string.isRequired,
      items: PropTypes.array.isRequired,
      size: PropTypes.number.isRequired,
      direction: PropTypes.string,
      ariaLabel: PropTypes.string,
    };
  
    static defaultProps = {
      ariaLabel: "Menu",
    };
  
    state = {
      direction: 'left',
      expanded: false,
    };
  
    setRef = (c) => {
      this.dropdown = c;
    }
  
    handleClick = (e) => {
      const i = Number(e.currentTarget.getAttribute('data-index'));
      const { action, to } = this.props.items[i];
  
      // Don't call e.preventDefault() when the item uses 'href' property.
      // ex. "Edit profile" on the account action bar
  
      if (typeof action === 'function') {
        e.preventDefault();
        action();
      } else if (to) {
        e.preventDefault();
        this.context.router.push(to);
      }
  
      this.dropdown.hide();
    }
  
    handleShow = () => this.setState({ expanded: true })
  
    handleHide = () => this.setState({ expanded: false })
  
    renderItem = (item, i) => {
      if (item === null) {
        return <li key={ 'sep' + i } className='dropdown__sep' />;
      }
  
      const { text, action, href = '#' } = item;
  
      return (
        <li className='dropdown__content-list-item' key={ text + i }>
          <a href={href} target='_blank' rel='noopener' onClick={this.handleClick} data-index={i} className='dropdown__content-list-link'>
            {text}
          </a>
        </li>
      );
    }
  
    render () {
      const { icon, items, size, direction, ariaLabel } = this.props;
      const { expanded } = this.state;
      const directionClass = (direction === "left") ? "dropdown__left" : "dropdown__right";
  
      const dropdownItems = expanded && (
        <ul className='dropdown__content-list'>
          {items.map(this.renderItem)}
        </ul>
      );
  
      return (
        <Dropdown ref={this.setRef} onShow={this.handleShow} onHide={this.handleHide}>
          <DropdownTrigger className='icon-button' style={{ fontSize: `${size}px`, width: `${size}px`, lineHeight: `${size}px` }} aria-label={ariaLabel}>
            <i className={ `fa fa-fw fa-${icon} dropdown__icon` }  aria-hidden={true} />
          </DropdownTrigger>
  
          <DropdownContent className={directionClass}>
            {dropdownItems}
          </DropdownContent>
        </Dropdown>
      );
    }
  
  }
  
  export default DropdownMenu;
  