'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _classnames = require('classnames');

var _classnames2 = _interopRequireDefault(_classnames);

var _reactPopper = require('react-popper');

var _utils = require('./utils');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }

var propTypes = {
  tag: _propTypes2.default.string,
  children: _propTypes2.default.node.isRequired,
  right: _propTypes2.default.bool,
  flip: _propTypes2.default.bool,
  className: _propTypes2.default.string,
  cssModule: _propTypes2.default.object
};

var defaultProps = {
  tag: 'div',
  flip: true
};

var contextTypes = {
  isOpen: _propTypes2.default.bool.isRequired,
  dropup: _propTypes2.default.bool.isRequired
};

var noFlipModifier = { flip: { enabled: false } };

var DropdownMenu = function DropdownMenu(props, context) {
  var className = props.className,
      cssModule = props.cssModule,
      right = props.right,
      tag = props.tag,
      flip = props.flip,
      attrs = _objectWithoutProperties(props, ['className', 'cssModule', 'right', 'tag', 'flip']);

  var classes = (0, _utils.mapToCssModules)((0, _classnames2.default)(className, 'dropdown-menu', {
    'dropdown-menu-right': right,
    show: context.isOpen
  }), cssModule);

  var Tag = tag;

  if (context.isOpen) {
    Tag = _reactPopper.Popper;
    var position1 = context.dropup ? 'top' : 'bottom';
    var position2 = right ? 'end' : 'start';
    attrs.placement = position1 + '-' + position2;
    attrs.component = tag;
    attrs.modifiers = !flip ? noFlipModifier : undefined;
  }

  return _react2.default.createElement(Tag, _extends({
    tabIndex: '-1',
    role: 'menu'
  }, attrs, {
    'aria-hidden': !context.isOpen,
    className: classes
  }));
};

DropdownMenu.propTypes = propTypes;
DropdownMenu.defaultProps = defaultProps;
DropdownMenu.contextTypes = contextTypes;

exports.default = DropdownMenu;