ssc-refer/es/containers/menuItemContainer.js

React refer component for SSC 3.0

import _extends from 'babel-runtime/helpers/extends';
import _objectWithoutProperties from 'babel-runtime/helpers/objectWithoutProperties';
import React, { PropTypes } from 'react';
import { findDOMNode } from 'react-dom';

import getDisplayName from '../refer/utils/getDisplayName';
import scrollIntoViewIfNeeded from '../refer/utils/scrollIntoViewIfNeeded';

var menuItemContainer = function menuItemContainer(Component) {
  return React.createClass({
    displayName: 'menuItemContainer(' + getDisplayName(Component) + ')',

    propTypes: {
      option: PropTypes.oneOfType([PropTypes.object, PropTypes.string]).isRequired,
      position: PropTypes.number
    },

    contextTypes: {
      activeIndex: PropTypes.number.isRequired,
      onActiveItemChange: PropTypes.func.isRequired,
      onInitialItemChange: PropTypes.func.isRequired,
      onMenuItemClick: PropTypes.func.isRequired
    },

    componentWillMount: function componentWillMount() {
      this._updateInitialItem(this.props);
    },
    componentWillReceiveProps: function componentWillReceiveProps(nextProps, nextContext) {
      var currentlyActive = this.context.activeIndex === this.props.position;
      var option = nextProps.option,
          position = nextProps.position;
      var activeIndex = nextContext.activeIndex,
          onActiveItemChange = nextContext.onActiveItemChange;


      if (position == null) {
        return;
      }

      // The item will become active.
      if (activeIndex === position) {
        // Ensures that if the menu items exceed the bounds of the menu, the
        // menu will scroll up or down as the user hits the arrow keys.
        scrollIntoViewIfNeeded(findDOMNode(this));

        // Fire the change handler when the menu item becomes active.
        !currentlyActive && onActiveItemChange(option);
      }

      this._updateInitialItem(nextProps);
    },
    render: function render() {
      var _context = this.context,
          activeIndex = _context.activeIndex,
          onMenuItemClick = _context.onMenuItemClick;

      var _props = this.props,
          option = _props.option,
          position = _props.position,
          props = _objectWithoutProperties(_props, ['option', 'position']);

      return React.createElement(Component, _extends({}, props, {
        active: activeIndex === position,
        onClick: function onClick() {
          return onMenuItemClick(option);
        }
      }));
    },
    _updateInitialItem: function _updateInitialItem(props) {
      var option = props.option,
          position = props.position;

      if (position === 0) {
        this.context.onInitialItemChange(option);
      }
    }
  });
};

export default menuItemContainer;