content: import _defineProperty from 'babel-runtime/helpers/defineProperty';
  import _classCallCheck from 'babel-runtime/helpers/classCallCheck';
  import _createClass from 'babel-runtime/helpers/createClass';
  import _possibleConstructorReturn from 'babel-runtime/helpers/possibleConstructorReturn';
  import _inherits from 'babel-runtime/helpers/inherits';
  import React, { Component } from 'react';
  import PropTypes from 'prop-types';
  import ReactDom from 'react-dom';
  import classnames from 'classnames';
  
  var scrollTo = function scrollTo(element, to, duration) {
    var requestAnimationFrame = window.requestAnimationFrame || function requestAnimationFrameTimeout() {
      return setTimeout(arguments[0], 10);
    };
    // jump to target if duration zero
    if (duration <= 0) {
      element.scrollTop = to;
      return;
    }
    var difference = to - element.scrollTop;
    var perTick = difference / duration * 10;
  
    requestAnimationFrame(function () {
      element.scrollTop = element.scrollTop + perTick;
      if (element.scrollTop === to) return;
      scrollTo(element, to, duration - 10);
    });
  };
  
  var Select = function (_Component) {
    _inherits(Select, _Component);
  
    function Select() {
      var _ref;
  
      var _temp, _this, _ret;
  
      _classCallCheck(this, Select);
  
      for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }
  
      return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = Select.__proto__ || Object.getPrototypeOf(Select)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
        active: false
      }, _this.onSelect = function (value) {
        var _this$props = _this.props,
            onSelect = _this$props.onSelect,
            type = _this$props.type;
  
        onSelect(type, value);
      }, _this.handleMouseEnter = function (e) {
        _this.setState({ active: true });
        _this.props.onMouseEnter(e);
      }, _this.handleMouseLeave = function () {
        _this.setState({ active: false });
      }, _temp), _possibleConstructorReturn(_this, _ret);
    }
  
    _createClass(Select, [{
      key: 'componentDidMount',
      value: function componentDidMount() {
        // jump to selected option
        this.scrollToSelected(0);
      }
    }, {
      key: 'componentDidUpdate',
      value: function componentDidUpdate(prevProps) {
        // smooth scroll to selected option
        if (prevProps.selectedIndex !== this.props.selectedIndex) {
          this.scrollToSelected(120);
        }
      }
    }, {
      key: 'getOptions',
      value: function getOptions() {
        var _this2 = this;
  
        var _props = this.props,
            options = _props.options,
            selectedIndex = _props.selectedIndex,
            prefixCls = _props.prefixCls;
  
        return options.map(function (item, index) {
          var _classnames;
  
          var cls = classnames((_classnames = {}, _defineProperty(_classnames, prefixCls + '-select-option-selected', selectedIndex === index), _defineProperty(_classnames, prefixCls + '-select-option-disabled', item.disabled), _classnames));
          var onclick = null;
          if (!item.disabled) {
            onclick = _this2.onSelect.bind(_this2, item.value);
          }
          return React.createElement(
            'li',
            {
              className: cls,
              key: index,
              onClick: onclick,
              disabled: item.disabled
            },
            item.value
          );
        });
      }
    }, {
      key: 'scrollToSelected',
      value: function scrollToSelected(duration) {
        // move to selected item
        var select = ReactDom.findDOMNode(this);
        var list = ReactDom.findDOMNode(this.refs.list);
        if (!list) {
          return;
        }
        var index = this.props.selectedIndex;
        if (index < 0) {
          index = 0;
        }
        var topOption = list.children[index];
        var to = topOption.offsetTop;
        scrollTo(select, to, duration);
      }
    }, {
      key: 'render',
      value: function render() {
        var _classnames2;
  
        if (this.props.options.length === 0) {
          return null;
        }
  
        var prefixCls = this.props.prefixCls;
  
        var cls = classnames((_classnames2 = {}, _defineProperty(_classnames2, prefixCls + '-select', 1), _defineProperty(_classnames2, prefixCls + '-select-active', this.state.active), _classnames2));
  
        return React.createElement(
          'div',
          {
            className: cls,
            onMouseEnter: this.handleMouseEnter,
            onMouseLeave: this.handleMouseLeave
          },
          React.createElement(
            'ul',
            { ref: 'list' },
            this.getOptions()
          )
        );
      }
    }]);
  
    return Select;
  }(Component);
  
  Select.propTypes = {
    prefixCls: PropTypes.string,
    options: PropTypes.array,
    selectedIndex: PropTypes.number,
    type: PropTypes.string,
    onSelect: PropTypes.func,
    onMouseEnter: PropTypes.func
  };
  
  
  export default Select;