text: import _extends from 'babel-runtime/helpers/extends';
  import _objectWithoutProperties from 'babel-runtime/helpers/objectWithoutProperties';
  import _defineProperty from 'babel-runtime/helpers/defineProperty';
  
  import PropTypes from '../_util/vue-types';
  import VcCascader from '../vc-cascader';
  import arrayTreeFilter from 'array-tree-filter';
  import classNames from 'classnames';
  import omit from 'omit.js';
  import KeyCode from '../_util/KeyCode';
  import Input from '../input';
  import Icon from '../icon';
  import { hasProp, filterEmpty, getOptionProps, getStyle, getClass, getAttrs, getComponentFromProp, isValidElement } from '../_util/props-util';
  import BaseMixin from '../_util/BaseMixin';
  import { cloneElement } from '../_util/vnode';
  
  var CascaderOptionType = PropTypes.shape({
    value: PropTypes.string,
    label: PropTypes.any,
    disabled: PropTypes.bool,
    children: PropTypes.array,
    key: PropTypes.string
  }).loose;
  
  var FieldNamesType = PropTypes.shape({
    value: PropTypes.string.isRequired,
    label: PropTypes.string.isRequired,
    children: PropTypes.string
  }).loose;
  
  var CascaderExpandTrigger = PropTypes.oneOf(['click', 'hover']);
  
  var ShowSearchType = PropTypes.shape({
    filter: PropTypes.func,
    render: PropTypes.func,
    sort: PropTypes.func,
    matchInputWidth: PropTypes.bool
  }).loose;
  function noop() {}
  
  var CascaderProps = {
    /** 可选项数据源 */
    options: PropTypes.arrayOf(CascaderOptionType).def([]),
    /** 默认的选中项 */
    defaultValue: PropTypes.arrayOf(PropTypes.string),
    /** 指定选中项 */
    value: PropTypes.arrayOf(PropTypes.string),
    /** 选择完成后的回调 */
    // onChange?: (value: string[], selectedOptions?: CascaderOptionType[]) => void;
    /** 选择后展示的渲染函数 */
    displayRender: PropTypes.func,
    transitionName: PropTypes.string.def('slide-up'),
    popupStyle: PropTypes.object.def({}),
    /** 自定义浮层类名 */
    popupClassName: PropTypes.string,
    /** 浮层预设位置：`bottomLeft` `bottomRight` `topLeft` `topRight` */
    popupPlacement: PropTypes.oneOf(['bottomLeft', 'bottomRight', 'topLeft', 'topRight']).def('bottomLeft'),
    /** 输入框占位文本*/
    placeholder: PropTypes.string.def('Please select'),
    /** 输入框大小，可选 `large` `default` `small` */
    size: PropTypes.oneOf(['large', 'default', 'small']),
    /** 禁用*/
    disabled: PropTypes.bool.def(false),
    /** 是否支持清除*/
    allowClear: PropTypes.bool.def(true),
    showSearch: PropTypes.oneOfType([Boolean, ShowSearchType]),
    notFoundContent: PropTypes.any.def('Not Found'),
    loadData: PropTypes.func,
    /** 次级菜单的展开方式，可选 'click' 和 'hover' */
    expandTrigger: CascaderExpandTrigger,
    /** 当此项为 true 时，点选每级菜单选项值都会发生变化 */
    changeOnSelect: PropTypes.bool,
    /** 浮层可见变化时回调 */
    // onPopupVisibleChange?: (popupVisible: boolean) => void;
    prefixCls: PropTypes.string.def('ant-cascader'),
    inputPrefixCls: PropTypes.string.def('ant-input'),
    getPopupContainer: PropTypes.func,
    popupVisible: PropTypes.bool,
    fieldNames: FieldNamesType,
    autoFocus: PropTypes.bool,
    suffixIcon: PropTypes.any
  };
  
  function defaultFilterOption(inputValue, path, names) {
    return path.some(function (option) {
      return option[names.label].indexOf(inputValue) > -1;
    });
  }
  
  function defaultSortFilteredOption(a, b, inputValue, names) {
    function callback(elem) {
      return elem[names.label].indexOf(inputValue) > -1;
    }
  
    return a.findIndex(callback) - b.findIndex(callback);
  }
  
  function getFilledFieldNames(_ref) {
    var _ref$fieldNames = _ref.fieldNames,
        fieldNames = _ref$fieldNames === undefined ? {} : _ref$fieldNames;
  
    var names = {
      children: fieldNames.children || 'children',
      label: fieldNames.label || 'label',
      value: fieldNames.value || 'value'
    };
    return names;
  }
  
  var defaultDisplayRender = function defaultDisplayRender(_ref2) {
    var labels = _ref2.labels;
    return labels.join(' / ');
  };
  
  var Cascader = {
    inheritAttrs: false,
    name: 'ACascader',
    mixins: [BaseMixin],
    props: CascaderProps,
    model: {
      prop: 'value',
      event: 'change'
    },
    data: function data() {
      this.cachedOptions = [];
      var value = this.value,
          defaultValue = this.defaultValue,
          popupVisible = this.popupVisible,
          showSearch = this.showSearch,
          options = this.options,
          flattenTree = this.flattenTree;
  
      return {
        sValue: value || defaultValue || [],
        inputValue: '',
        inputFocused: false,
        sPopupVisible: popupVisible,
        flattenOptions: showSearch ? flattenTree(options, this.$props) : undefined
      };
    },
    mounted: function mounted() {
      var _this = this;
  
      this.$nextTick(function () {
        if (_this.autoFocus && !_this.showSearch && !_this.disabled) {
          _this.$refs.picker.focus();
        }
      });
    },
  
    watch: {
      value: function value(val) {
        this.setState({ sValue: val || [] });
      },
      popupVisible: function popupVisible(val) {
        this.setState({ sPopupVisible: val });
      },
      options: function options(val) {
        if (this.showSearch) {
          this.setState({ flattenOptions: this.flattenTree(this.options, this.$props) });
        }
      }
    },
    methods: {
      highlightKeyword: function highlightKeyword(str, keyword, prefixCls) {
        var h = this.$createElement;
  
        return str.split(keyword).map(function (node, index) {
          return index === 0 ? node : [h(
            'span',
            { 'class': prefixCls + '-menu-item-keyword' },
            [keyword]
          ), node];
        });
      },
      defaultRenderFilteredOption: function defaultRenderFilteredOption(_ref3) {
        var _this2 = this;
  
        var inputValue = _ref3.inputValue,
            path = _ref3.path,
            prefixCls = _ref3.prefixCls,
            names = _ref3.names;
  
        return path.map(function (option, index) {
          var label = option[names.label];
          var node = label.indexOf(inputValue) > -1 ? _this2.highlightKeyword(label, inputValue, prefixCls) : label;
          return index === 0 ? node : [' / ', node];
        });
      },
      handleChange: function handleChange(value, selectedOptions) {
        this.setState({ inputValue: '' });
        if (selectedOptions[0].__IS_FILTERED_OPTION) {
          var unwrappedValue = value[0];
          var unwrappedSelectedOptions = selectedOptions[0].path;
          this.setValue(unwrappedValue, unwrappedSelectedOptions);
          return;
        }
        this.setValue(value, selectedOptions);
      },
      handlePopupVisibleChange: function handlePopupVisibleChange(popupVisible) {
        if (!hasProp(this, 'popupVisible')) {
          this.setState({
            sPopupVisible: popupVisible,
            inputFocused: popupVisible,
            inputValue: popupVisible ? this.inputValue : ''
          });
        }
        this.$emit('popupVisibleChange', popupVisible);
      },
      handleInputFocus: function handleInputFocus(e) {
        this.$emit('focus', e);
      },
      handleInputBlur: function handleInputBlur(e) {
        this.setState({
          inputFocused: false
        });
        this.$emit('blur', e);
      },
      handleInputClick: function handleInputClick(e) {
        var inputFocused = this.inputFocused,
            sPopupVisible = this.sPopupVisible;
        // Prevent `Trigger` behaviour.
  
        if (inputFocused || sPopupVisible) {
          e.stopPropagation();
          if (e.nativeEvent && e.nativeEvent.stopImmediatePropagation) {
            e.nativeEvent.stopImmediatePropagation();
          }
        }
      },
      handleKeyDown: function handleKeyDown(e) {
        if (e.keyCode === KeyCode.BACKSPACE) {
          e.stopPropagation();
        }
      },
      handleInputChange: function handleInputChange(e) {
        var inputValue = e.target.value;
        this.setState({ inputValue: inputValue });
      },
      setValue: function setValue(value, selectedOptions) {
        if (!hasProp(this, 'value')) {
          this.setState({ sValue: value });
        }
        this.$emit('change', value, selectedOptions);
      },
      getLabel: function getLabel() {
        var options = this.options,
            $scopedSlots = this.$scopedSlots;
  
        var names = getFilledFieldNames(this.$props);
        var displayRender = this.displayRender || $scopedSlots.displayRender || defaultDisplayRender;
        var value = this.sValue;
        var unwrappedValue = Array.isArray(value[0]) ? value[0] : value;
        var selectedOptions = arrayTreeFilter(options, function (o, level) {
          return o[names.value] === unwrappedValue[level];
        }, { childrenKeyName: names.children });
        var labels = selectedOptions.map(function (o) {
          return o[names.label];
        });
        return displayRender({ labels: labels, selectedOptions: selectedOptions });
      },
      clearSelection: function clearSelection(e) {
        e.preventDefault();
        e.stopPropagation();
        if (!this.inputValue) {
          this.setValue([]);
          this.handlePopupVisibleChange(false);
        } else {
          this.setState({ inputValue: '' });
        }
      },
      flattenTree: function flattenTree(options, props) {
        var _this3 = this;
  
        var ancestor = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];
  
        var names = getFilledFieldNames(props);
        var flattenOptions = [];
        var childrenName = names.children;
        options.forEach(function (option) {
          var path = ancestor.concat(option);
          if (props.changeOnSelect || !option[childrenName] || !option[childrenName].length) {
            flattenOptions.push(path);
          }
          if (option[childrenName]) {
            flattenOptions = flattenOptions.concat(_this3.flattenTree(option[childrenName], props, path));
          }
        });
        return flattenOptions;
      },
      generateFilteredOptions: function generateFilteredOptions(prefixCls) {
        var _ref5;
  
        var showSearch = this.showSearch,
            notFoundContent = this.notFoundContent,
            $scopedSlots = this.$scopedSlots;
  
        var names = getFilledFieldNames(this.$props);
        var _showSearch$filter = showSearch.filter,
            filter = _showSearch$filter === undefined ? defaultFilterOption : _showSearch$filter,
            _showSearch$sort = showSearch.sort,
            sort = _showSearch$sort === undefined ? defaultSortFilteredOption : _showSearch$sort;
        var _$data = this.$data,
            _$data$flattenOptions = _$data.flattenOptions,
            flattenOptions = _$data$flattenOptions === undefined ? [] : _$data$flattenOptions,
            inputValue = _$data.inputValue;
  
        var render = showSearch.render || $scopedSlots.showSearchRender || this.defaultRenderFilteredOption;
        var filtered = flattenOptions.filter(function (path) {
          return filter(inputValue, path, names);
        }).sort(function (a, b) {
          return sort(a, b, inputValue, names);
        });
  
        if (filtered.length > 0) {
          return filtered.map(function (path) {
            var _ref4;
  
            return _ref4 = {
              __IS_FILTERED_OPTION: true,
              path: path
            }, _defineProperty(_ref4, names.label, render({ inputValue: inputValue, path: path, prefixCls: prefixCls, names: names })), _defineProperty(_ref4, names.value, path.map(function (o) {
              return o[names.value];
            })), _defineProperty(_ref4, 'disabled', path.some(function (o) {
              return !!o.disabled;
            })), _ref4;
          });
        }
        return [(_ref5 = {}, _defineProperty(_ref5, names.label, notFoundContent), _defineProperty(_ref5, names.value, 'ANT_CASCADER_NOT_FOUND'), _defineProperty(_ref5, 'disabled', true), _ref5)];
      },
      focus: function focus() {
        if (this.showSearch) {
          this.$refs.input.focus();
        } else {
          this.$refs.picker.focus();
        }
      },
      blur: function blur() {
        if (this.showSearch) {
          this.$refs.input.blur();
        } else {
          this.$refs.picker.blur();
        }
      }
    },
  
    render: function render() {
      var _classNames, _classNames2, _classNames3;
  
      var h = arguments[0];
      var $slots = this.$slots,
          sPopupVisible = this.sPopupVisible,
          inputValue = this.inputValue,
          $listeners = this.$listeners;
      var _$data2 = this.$data,
          value = _$data2.sValue,
          inputFocused = _$data2.inputFocused;
  
      var props = getOptionProps(this);
      var suffixIcon = getComponentFromProp(this, 'suffixIcon');
      suffixIcon = Array.isArray(suffixIcon) ? suffixIcon[0] : suffixIcon;
  
      var prefixCls = props.prefixCls,
          inputPrefixCls = props.inputPrefixCls,
          placeholder = props.placeholder,
          size = props.size,
          disabled = props.disabled,
          allowClear = props.allowClear,
          _props$showSearch = props.showSearch,
          showSearch = _props$showSearch === undefined ? false : _props$showSearch,
          otherProps = _objectWithoutProperties(props, ['prefixCls', 'inputPrefixCls', 'placeholder', 'size', 'disabled', 'allowClear', 'showSearch']);
  
      var sizeCls = classNames((_classNames = {}, _defineProperty(_classNames, inputPrefixCls + '-lg', size === 'large'), _defineProperty(_classNames, inputPrefixCls + '-sm', size === 'small'), _classNames));
      var clearIcon = allowClear && !disabled && value.length > 0 || inputValue ? h(Icon, {
        attrs: {
          type: 'close-circle',
          theme: 'filled'
        },
        'class': prefixCls + '-picker-clear',
        on: {
          'click': this.clearSelection
        },
  
        key: 'clear-icon'
      }) : null;
      var arrowCls = classNames((_classNames2 = {}, _defineProperty(_classNames2, prefixCls + '-picker-arrow', true), _defineProperty(_classNames2, prefixCls + '-picker-arrow-expand', sPopupVisible), _classNames2));
      var pickerCls = classNames(getClass(this), prefixCls + '-picker', (_classNames3 = {}, _defineProperty(_classNames3, prefixCls + '-picker-with-value', inputValue), _defineProperty(_classNames3, prefixCls + '-picker-disabled', disabled), _defineProperty(_classNames3, prefixCls + '-picker-' + size, !!size), _defineProperty(_classNames3, prefixCls + '-picker-show-search', !!showSearch), _defineProperty(_classNames3, prefixCls + '-picker-focused', inputFocused), _classNames3));
  
      // Fix bug of https://github.com/facebook/react/pull/5004
      // and https://fb.me/react-unknown-prop
      var tempInputProps = omit(otherProps, ['options', 'popupPlacement', 'transitionName', 'displayRender', 'changeOnSelect', 'expandTrigger', 'popupVisible', 'getPopupContainer', 'loadData', 'popupClassName', 'filterOption', 'renderFilteredOption', 'sortFilteredOption', 'notFoundContent', 'defaultValue', 'fieldNames']);
  
      var options = props.options;
      if (inputValue) {
        options = this.generateFilteredOptions(prefixCls);
      }
      // Dropdown menu should keep previous status until it is fully closed.
      if (!sPopupVisible) {
        options = this.cachedOptions;
      } else {
        this.cachedOptions = options;
      }
  
      var dropdownMenuColumnStyle = {};
      var isNotFound = (options || []).length === 1 && options[0].value === 'ANT_CASCADER_NOT_FOUND';
      if (isNotFound) {
        dropdownMenuColumnStyle.height = 'auto'; // Height of one row.
      }
      // The default value of `matchInputWidth` is `true`
      var resultListMatchInputWidth = showSearch.matchInputWidth !== false;
      if (resultListMatchInputWidth && inputValue && this.input) {
        dropdownMenuColumnStyle.width = this.input.input.offsetWidth;
      }
      // showSearch时，focus、blur在input上触发，反之在ref='picker'上触发
      var inputProps = {
        props: _extends({}, tempInputProps, {
          prefixCls: inputPrefixCls,
          placeholder: value && value.length > 0 ? undefined : placeholder,
          value: inputValue,
          disabled: disabled,
          readOnly: !showSearch,
          autoComplete: 'off'
        }),
        'class': prefixCls + '-input ' + sizeCls,
        ref: 'input',
        on: {
          focus: showSearch ? this.handleInputFocus : noop,
          click: showSearch ? this.handleInputClick : noop,
          blur: showSearch ? this.handleInputBlur : noop,
          keydown: this.handleKeyDown,
          change: showSearch ? this.handleInputChange : noop
        },
        attrs: getAttrs(this)
      };
      var children = filterEmpty($slots['default']);
      var inputIcon = suffixIcon && (isValidElement(suffixIcon) ? cloneElement(suffixIcon, {
        'class': _defineProperty({}, prefixCls + '-picker-arrow', true)
      }) : h(
        'span',
        { 'class': prefixCls + '-picker-arrow' },
        [suffixIcon]
      )) || h(Icon, {
        attrs: { type: 'down' },
        'class': arrowCls });
  
      var input = children.length ? children : h(
        'span',
        {
          'class': pickerCls,
          style: getStyle(this),
          ref: 'picker'
        },
        [showSearch ? h(
          'span',
          { 'class': prefixCls + '-picker-label' },
          [this.getLabel()]
        ) : null, h(Input, inputProps), !showSearch ? h(
          'span',
          { 'class': prefixCls + '-picker-label' },
          [this.getLabel()]
        ) : null, clearIcon, inputIcon]
      );
  
      var expandIcon = h(Icon, {
        attrs: { type: 'right' }
      });
  
      var loadingIcon = h(
        'span',
        { 'class': prefixCls + '-menu-item-loading-icon' },
        [h(Icon, {
          attrs: { type: 'redo', spin: true }
        })]
      );
      var cascaderProps = {
        props: _extends({}, props, {
          options: options,
          value: value,
          popupVisible: sPopupVisible,
          dropdownMenuColumnStyle: dropdownMenuColumnStyle,
          expandIcon: expandIcon,
          loadingIcon: loadingIcon
        }),
        on: _extends({}, $listeners, {
          popupVisibleChange: this.handlePopupVisibleChange,
          change: this.handleChange
        })
      };
      return h(
        VcCascader,
        cascaderProps,
        [input]
      );
    }
  };
  
  /* istanbul ignore next */
  Cascader.install = function (Vue) {
    Vue.component(Cascader.name, Cascader);
  };
  
  export default Cascader;