function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }

function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }

function _extends() { _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; }; return _extends.apply(this, arguments); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { findDOMNode } from 'react-dom';
import Menu from '../menu';
import VirtualList from '../virtual-list';

var CascaderMenu =
/*#__PURE__*/
function (_Component) {
  _inherits(CascaderMenu, _Component);

  function CascaderMenu() {
    _classCallCheck(this, CascaderMenu);

    return _possibleConstructorReturn(this, _getPrototypeOf(CascaderMenu).apply(this, arguments));
  }

  _createClass(CascaderMenu, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      this.scrollToSelectedItem();
    }
  }, {
    key: "scrollToSelectedItem",
    value: function scrollToSelectedItem() {
      var _this$props = this.props,
          prefix = _this$props.prefix,
          useVirtual = _this$props.useVirtual,
          children = _this$props.children;

      if (!children || children.length === 0) {
        return;
      }

      var selectedIndex = children.findIndex(function (item) {
        return !!item.props.checked || !!item.props.selected || !!item.props.expanded;
      });

      if (selectedIndex === -1) {
        return;
      }

      if (useVirtual) {
        var instance = this.refs.virtual.getInstance();
        setTimeout(function () {
          return instance.scrollTo(selectedIndex);
        }, 0);
      } else {
        var itemSelector = ".".concat(prefix, "menu-item");
        var menu = findDOMNode(this.refs.menu);
        var targetItem = menu.querySelectorAll(itemSelector)[selectedIndex];

        if (targetItem) {
          menu.scrollTop = targetItem.offsetTop - Math.floor((menu.clientHeight / targetItem.clientHeight - 1) / 2) * targetItem.clientHeight;
        }
      }
    }
  }, {
    key: "renderMenu",
    value: function renderMenu(items, ref, props) {
      var _this = this;

      return React.createElement(Menu, _extends({
        ref: ref,
        role: "listbox"
      }, props), items.map(function (node) {
        if (React.isValidElement(node) && node.type.menuChildType === 'item') {
          return React.cloneElement(node, {
            menu: _this
          });
        }

        return node;
      }));
    }
  }, {
    key: "render",
    value: function render() {
      var _this2 = this;

      var _this$props2 = this.props,
          prefix = _this$props2.prefix,
          useVirtual = _this$props2.useVirtual,
          className = _this$props2.className,
          style = _this$props2.style,
          children = _this$props2.children,
          others = _objectWithoutProperties(_this$props2, ["prefix", "useVirtual", "className", "style", "children"]);

      var menuProps = _objectSpread({
        labelToggleChecked: false,
        className: "".concat(prefix, "cascader-menu")
      }, others);

      return React.createElement("div", {
        ref: "menu",
        className: "".concat(prefix, "cascader-menu-wrapper ").concat(className ? className : ''),
        style: style
      }, useVirtual ? React.createElement(VirtualList, {
        ref: "virtual",
        itemsRenderer: function itemsRenderer(items, ref) {
          return _this2.renderMenu(items, ref, menuProps);
        }
      }, children) : this.renderMenu(children, undefined, menuProps));
    }
  }]);

  return CascaderMenu;
}(Component);

_defineProperty(CascaderMenu, "propTypes", {
  prefix: PropTypes.string,
  className: PropTypes.string,
  useVirtual: PropTypes.bool,
  children: PropTypes.node
});

export { CascaderMenu as default };