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