content: import React, { Component } from 'react';
  import { FilterService } from 'primereact/api';
  import { DomHandler, classNames, ObjectUtils } from 'primereact/utils';
  import { Ripple } from 'primereact/ripple';
  import { InputText } from 'primereact/inputtext';
  import { tip } from 'primereact/tooltip';
  import { VirtualScroller } from 'primereact/virtualscroller';
  
  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 _arrayLikeToArray$1(arr, len) {
    if (len == null || len > arr.length) len = arr.length;
  
    for (var i = 0, arr2 = new Array(len); i < len; i++) {
      arr2[i] = arr[i];
    }
  
    return arr2;
  }
  
  function _arrayWithoutHoles(arr) {
    if (Array.isArray(arr)) return _arrayLikeToArray$1(arr);
  }
  
  function _iterableToArray(iter) {
    if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
  }
  
  function _unsupportedIterableToArray$1(o, minLen) {
    if (!o) return;
    if (typeof o === "string") return _arrayLikeToArray$1(o, minLen);
    var n = Object.prototype.toString.call(o).slice(8, -1);
    if (n === "Object" && o.constructor) n = o.constructor.name;
    if (n === "Map" || n === "Set") return Array.from(o);
    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray$1(o, minLen);
  }
  
  function _nonIterableSpread() {
    throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
  }
  
  function _toConsumableArray(arr) {
    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray$1(arr) || _nonIterableSpread();
  }
  
  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 _assertThisInitialized(self) {
    if (self === void 0) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }
  
    return self;
  }
  
  function _setPrototypeOf(o, p) {
    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
      o.__proto__ = p;
      return o;
    };
  
    return _setPrototypeOf(o, p);
  }
  
  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 _typeof(obj) {
    "@babel/helpers - typeof";
  
    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 _possibleConstructorReturn(self, call) {
    if (call && (_typeof(call) === "object" || typeof call === "function")) {
      return call;
    } else if (call !== void 0) {
      throw new TypeError("Derived constructors may only return object or undefined");
    }
  
    return _assertThisInitialized(self);
  }
  
  function _getPrototypeOf(o) {
    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
      return o.__proto__ || Object.getPrototypeOf(o);
    };
    return _getPrototypeOf(o);
  }
  
  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;
  }
  
  function _createSuper$2(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct$2(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
  
  function _isNativeReflectConstruct$2() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
  var ListBoxItem = /*#__PURE__*/function (_Component) {
    _inherits(ListBoxItem, _Component);
  
    var _super = _createSuper$2(ListBoxItem);
  
    function ListBoxItem(props) {
      var _this;
  
      _classCallCheck(this, ListBoxItem);
  
      _this = _super.call(this, props);
      _this.onClick = _this.onClick.bind(_assertThisInitialized(_this));
      _this.onTouchEnd = _this.onTouchEnd.bind(_assertThisInitialized(_this));
      _this.onKeyDown = _this.onKeyDown.bind(_assertThisInitialized(_this));
      return _this;
    }
  
    _createClass(ListBoxItem, [{
      key: "onClick",
      value: function onClick(event) {
        if (this.props.onClick) {
          this.props.onClick({
            originalEvent: event,
            option: this.props.option
          });
        }
  
        event.preventDefault();
      }
    }, {
      key: "onTouchEnd",
      value: function onTouchEnd(event) {
        if (this.props.onTouchEnd) {
          this.props.onTouchEnd({
            originalEvent: event,
            option: this.props.option
          });
        }
      }
    }, {
      key: "onKeyDown",
      value: function onKeyDown(event) {
        var item = event.currentTarget;
  
        switch (event.which) {
          //down
          case 40:
            var nextItem = this.findNextItem(item);
  
            if (nextItem) {
              nextItem.focus();
            }
  
            event.preventDefault();
            break;
          //up
  
          case 38:
            var prevItem = this.findPrevItem(item);
  
            if (prevItem) {
              prevItem.focus();
            }
  
            event.preventDefault();
            break;
          //enter
  
          case 13:
            this.onClick(event);
            event.preventDefault();
            break;
        }
      }
    }, {
      key: "findNextItem",
      value: function findNextItem(item) {
        var nextItem = item.nextElementSibling;
        if (nextItem) return DomHandler.hasClass(nextItem, 'p-disabled') || DomHandler.hasClass(nextItem, 'p-listbox-item-group') ? this.findNextItem(nextItem) : nextItem;else return null;
      }
    }, {
      key: "findPrevItem",
      value: function findPrevItem(item) {
        var prevItem = item.previousElementSibling;
        if (prevItem) return DomHandler.hasClass(prevItem, 'p-disabled') || DomHandler.hasClass(prevItem, 'p-listbox-item-group') ? this.findPrevItem(prevItem) : prevItem;else return null;
      }
    }, {
      key: "render",
      value: function render() {
        var className = classNames('p-listbox-item', {
          'p-highlight': this.props.selected,
          'p-disabled': this.props.disabled
        }, this.props.option.className);
        var content = this.props.template ? ObjectUtils.getJSXElement(this.props.template, this.props.option) : this.props.label;
        return /*#__PURE__*/React.createElement("li", {
          className: className,
          onClick: this.onClick,
          onTouchEnd: this.onTouchEnd,
          onKeyDown: this.onKeyDown,
          tabIndex: this.props.tabIndex,
          "aria-label": this.props.label,
          key: this.props.label,
          role: "option",
          "aria-selected": this.props.selected
        }, content, /*#__PURE__*/React.createElement(Ripple, null));
      }
    }]);
  
    return ListBoxItem;
  }(Component);
  
  _defineProperty(ListBoxItem, "defaultProps", {
    option: null,
    label: null,
    selected: false,
    disabled: false,
    tabIndex: null,
    onClick: null,
    onTouchEnd: null,
    template: null
  });
  
  function _createSuper$1(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct$1(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
  
  function _isNativeReflectConstruct$1() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
  var ListBoxHeader = /*#__PURE__*/function (_Component) {
    _inherits(ListBoxHeader, _Component);
  
    var _super = _createSuper$1(ListBoxHeader);
  
    function ListBoxHeader(props) {
      var _this;
  
      _classCallCheck(this, ListBoxHeader);
  
      _this = _super.call(this, props);
      _this.onFilter = _this.onFilter.bind(_assertThisInitialized(_this));
      return _this;
    }
  
    _createClass(ListBoxHeader, [{
      key: "onFilter",
      value: function onFilter(event) {
        if (this.props.onFilter) {
          this.props.onFilter({
            originalEvent: event,
            value: event.target.value
          });
        }
      }
    }, {
      key: "render",
      value: function render() {
        return /*#__PURE__*/React.createElement("div", {
          className: "p-listbox-header"
        }, /*#__PURE__*/React.createElement("div", {
          className: "p-listbox-filter-container"
        }, /*#__PURE__*/React.createElement(InputText, {
          type: "text",
          value: this.props.filter,
          onChange: this.onFilter,
          className: "p-listbox-filter",
          disabled: this.props.disabled,
          placeholder: this.props.filterPlaceholder
        }), /*#__PURE__*/React.createElement("span", {
          className: "p-listbox-filter-icon pi pi-search"
        })));
      }
    }]);
  
    return ListBoxHeader;
  }(Component);
  
  _defineProperty(ListBoxHeader, "defaultProps", {
    filter: null,
    filterPlaceholder: null,
    disabled: false,
    onFilter: null
  });
  
  function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }
  
  function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
  
  function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
  
  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(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
  
  function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
  
  function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
  var ListBox = /*#__PURE__*/function (_Component) {
    _inherits(ListBox, _Component);
  
    var _super = _createSuper(ListBox);
  
    function ListBox(props) {
      var _this;
  
      _classCallCheck(this, ListBox);
  
      _this = _super.call(this, props);
      _this.state = {};
  
      if (!_this.props.onFilterValueChange) {
        _this.state.filterValue = '';
      }
  
      _this.onFilter = _this.onFilter.bind(_assertThisInitialized(_this));
      _this.onOptionSelect = _this.onOptionSelect.bind(_assertThisInitialized(_this));
      _this.onOptionTouchEnd = _this.onOptionTouchEnd.bind(_assertThisInitialized(_this));
      return _this;
    }
  
    _createClass(ListBox, [{
      key: "componentDidMount",
      value: function componentDidMount() {
        if (this.props.tooltip) {
          this.renderTooltip();
        }
      }
    }, {
      key: "componentDidUpdate",
      value: function componentDidUpdate(prevProps) {
        if (prevProps.tooltip !== this.props.tooltip || prevProps.tooltipOptions !== this.props.tooltipOptions) {
          if (this.tooltip) this.tooltip.update(_objectSpread({
            content: this.props.tooltip
          }, this.props.tooltipOptions || {}));else this.renderTooltip();
        }
      }
    }, {
      key: "componentWillUnmount",
      value: function componentWillUnmount() {
        if (this.tooltip) {
          this.tooltip.destroy();
          this.tooltip = null;
        }
      }
    }, {
      key: "renderTooltip",
      value: function renderTooltip() {
        this.tooltip = tip({
          target: this.element,
          content: this.props.tooltip,
          options: this.props.tooltipOptions
        });
      }
    }, {
      key: "getFilterValue",
      value: function getFilterValue() {
        return (this.props.onFilterValueChange ? this.props.filterValue : this.state.filterValue) || '';
      }
    }, {
      key: "onOptionSelect",
      value: function onOptionSelect(event) {
        var option = event.option;
  
        if (this.props.disabled || this.isOptionDisabled(option)) {
          return;
        }
  
        if (this.props.multiple) this.onOptionSelectMultiple(event.originalEvent, option);else this.onOptionSelectSingle(event.originalEvent, option);
        this.optionTouched = false;
      }
    }, {
      key: "onOptionTouchEnd",
      value: function onOptionTouchEnd() {
        if (this.props.disabled) {
          return;
        }
  
        this.optionTouched = true;
      }
    }, {
      key: "onOptionSelectSingle",
      value: function onOptionSelectSingle(event, option) {
        var selected = this.isSelected(option);
        var valueChanged = false;
        var value = null;
        var metaSelection = this.optionTouched ? false : this.props.metaKeySelection;
  
        if (metaSelection) {
          var metaKey = event.metaKey || event.ctrlKey;
  
          if (selected) {
            if (metaKey) {
              value = null;
              valueChanged = true;
            }
          } else {
            value = this.getOptionValue(option);
            valueChanged = true;
          }
        } else {
          value = selected ? null : this.getOptionValue(option);
          valueChanged = true;
        }
  
        if (valueChanged) {
          this.updateModel(event, value);
        }
      }
    }, {
      key: "onOptionSelectMultiple",
      value: function onOptionSelectMultiple(event, option) {
        var selected = this.isSelected(option);
        var valueChanged = false;
        var value = null;
        var metaSelection = this.optionTouched ? false : this.props.metaKeySelection;
  
        if (metaSelection) {
          var metaKey = event.metaKey || event.ctrlKey;
  
          if (selected) {
            if (metaKey) value = this.removeOption(option);else value = [this.getOptionValue(option)];
            valueChanged = true;
          } else {
            value = metaKey ? this.props.value || [] : [];
            value = [].concat(_toConsumableArray(value), [this.getOptionValue(option)]);
            valueChanged = true;
          }
        } else {
          if (selected) value = this.removeOption(option);else value = [].concat(_toConsumableArray(this.props.value || []), [this.getOptionValue(option)]);
          valueChanged = true;
        }
  
        if (valueChanged) {
          this.props.onChange({
            originalEvent: event,
            value: value,
            stopPropagation: function stopPropagation() {},
            preventDefault: function preventDefault() {},
            target: {
              name: this.props.name,
              id: this.props.id,
              value: value
            }
          });
        }
      }
    }, {
      key: "onFilter",
      value: function onFilter(event) {
        var originalEvent = event.originalEvent,
            value = event.value;
  
        if (this.props.onFilterValueChange) {
          this.props.onFilterValueChange({
            originalEvent: originalEvent,
            value: value
          });
        } else {
          this.setState({
            filterValue: value
          });
        }
      }
    }, {
      key: "updateModel",
      value: function updateModel(event, value) {
        if (this.props.onChange) {
          this.props.onChange({
            originalEvent: event,
            value: value,
            stopPropagation: function stopPropagation() {},
            preventDefault: function preventDefault() {},
            target: {
              name: this.props.name,
              id: this.props.id,
              value: value
            }
          });
        }
      }
    }, {
      key: "removeOption",
      value: function removeOption(option) {
        var _this2 = this;
  
        return this.props.value.filter(function (val) {
          return !ObjectUtils.equals(val, _this2.getOptionValue(option), _this2.props.dataKey);
        });
      }
    }, {
      key: "isSelected",
      value: function isSelected(option) {
        var selected = false;
        var optionValue = this.getOptionValue(option);
  
        if (this.props.multiple) {
          if (this.props.value) {
            var _iterator = _createForOfIteratorHelper(this.props.value),
                _step;
  
            try {
              for (_iterator.s(); !(_step = _iterator.n()).done;) {
                var val = _step.value;
  
                if (ObjectUtils.equals(val, optionValue, this.props.dataKey)) {
                  selected = true;
                  break;
                }
              }
            } catch (err) {
              _iterator.e(err);
            } finally {
              _iterator.f();
            }
          }
        } else {
          selected = ObjectUtils.equals(this.props.value, optionValue, this.props.dataKey);
        }
  
        return selected;
      }
    }, {
      key: "filter",
      value: function filter(option) {
        var filterValue = this.getFilterValue().trim().toLocaleLowerCase(this.props.filterLocale);
        var optionLabel = this.getOptionLabel(option).toLocaleLowerCase(this.props.filterLocale);
        return optionLabel.indexOf(filterValue) > -1;
      }
    }, {
      key: "hasFilter",
      value: function hasFilter() {
        var filter = this.getFilterValue();
        return filter && filter.trim().length > 0;
      }
    }, {
      key: "getOptionLabel",
      value: function getOptionLabel(option) {
        return this.props.optionLabel ? ObjectUtils.resolveFieldData(option, this.props.optionLabel) : option && option['label'] !== undefined ? option['label'] : option;
      }
    }, {
      key: "getOptionValue",
      value: function getOptionValue(option) {
        return this.props.optionValue ? ObjectUtils.resolveFieldData(option, this.props.optionValue) : option && option['value'] !== undefined ? option['value'] : option;
      }
    }, {
      key: "getOptionRenderKey",
      value: function getOptionRenderKey(option) {
        return this.props.dataKey ? ObjectUtils.resolveFieldData(option, this.props.dataKey) : this.getOptionLabel(option);
      }
    }, {
      key: "isOptionDisabled",
      value: function isOptionDisabled(option) {
        if (this.props.optionDisabled) {
          return ObjectUtils.isFunction(this.props.optionDisabled) ? this.props.optionDisabled(option) : ObjectUtils.resolveFieldData(option, this.props.optionDisabled);
        }
  
        return option && option['disabled'] !== undefined ? option['disabled'] : false;
      }
    }, {
      key: "getOptionGroupRenderKey",
      value: function getOptionGroupRenderKey(optionGroup) {
        return ObjectUtils.resolveFieldData(optionGroup, this.props.optionGroupLabel);
      }
    }, {
      key: "getOptionGroupLabel",
      value: function getOptionGroupLabel(optionGroup) {
        return ObjectUtils.resolveFieldData(optionGroup, this.props.optionGroupLabel);
      }
    }, {
      key: "getOptionGroupChildren",
      value: function getOptionGroupChildren(optionGroup) {
        return ObjectUtils.resolveFieldData(optionGroup, this.props.optionGroupChildren);
      }
    }, {
      key: "getVisibleOptions",
      value: function getVisibleOptions() {
        if (this.hasFilter()) {
          var filterValue = this.getFilterValue().trim().toLocaleLowerCase(this.props.filterLocale);
          var searchFields = this.props.filterBy ? this.props.filterBy.split(',') : [this.props.optionLabel || 'label'];
  
          if (this.props.optionGroupLabel) {
            var filteredGroups = [];
  
            var _iterator2 = _createForOfIteratorHelper(this.props.options),
                _step2;
  
            try {
              for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
                var optgroup = _step2.value;
                var filteredSubOptions = FilterService.filter(this.getOptionGroupChildren(optgroup), searchFields, filterValue, this.props.filterMatchMode, this.props.filterLocale);
  
                if (filteredSubOptions && filteredSubOptions.length) {
                  filteredGroups.push(_objectSpread(_objectSpread({}, optgroup), {
                    items: filteredSubOptions
                  }));
                }
              }
            } catch (err) {
              _iterator2.e(err);
            } finally {
              _iterator2.f();
            }
  
            return filteredGroups;
          } else {
            return FilterService.filter(this.props.options, searchFields, filterValue, this.props.filterMatchMode, this.props.filterLocale);
          }
        } else {
          return this.props.options;
        }
      }
    }, {
      key: "renderGroupChildren",
      value: function renderGroupChildren(optionGroup) {
        var _this3 = this;
  
        var groupChildren = this.getOptionGroupChildren(optionGroup);
        return groupChildren.map(function (option, j) {
          var optionLabel = _this3.getOptionLabel(option);
  
          var optionKey = j + '_' + _this3.getOptionRenderKey(option);
  
          var disabled = _this3.isOptionDisabled(option);
  
          var tabIndex = disabled ? null : _this3.props.tabIndex || 0;
          return /*#__PURE__*/React.createElement(ListBoxItem, {
            key: optionKey,
            label: optionLabel,
            option: option,
            template: _this3.props.itemTemplate,
            selected: _this3.isSelected(option),
            onClick: _this3.onOptionSelect,
            onTouchEnd: _this3.onOptionTouchEnd,
            tabIndex: tabIndex,
            disabled: disabled
          });
        });
      }
    }, {
      key: "renderItem",
      value: function renderItem(option, index) {
        if (this.props.optionGroupLabel) {
          var groupContent = this.props.optionGroupTemplate ? ObjectUtils.getJSXElement(this.props.optionGroupTemplate, option, index) : this.getOptionGroupLabel(option);
          var groupChildrenContent = this.renderGroupChildren(option);
          var key = index + '_' + this.getOptionGroupRenderKey(option);
          return /*#__PURE__*/React.createElement(React.Fragment, {
            key: key
          }, /*#__PURE__*/React.createElement("li", {
            className: "p-listbox-item-group"
          }, groupContent), groupChildrenContent);
        } else {
          var optionLabel = this.getOptionLabel(option);
          var optionKey = index + '_' + this.getOptionRenderKey(option);
          var disabled = this.isOptionDisabled(option);
          var tabIndex = disabled ? null : this.props.tabIndex || 0;
          return /*#__PURE__*/React.createElement(ListBoxItem, {
            key: optionKey,
            label: optionLabel,
            option: option,
            template: this.props.itemTemplate,
            selected: this.isSelected(option),
            onClick: this.onOptionSelect,
            onTouchEnd: this.onOptionTouchEnd,
            tabIndex: tabIndex,
            disabled: disabled
          });
        }
      }
    }, {
      key: "renderItems",
      value: function renderItems(visibleOptions) {
        var _this4 = this;
  
        if (visibleOptions && visibleOptions.length) {
          return visibleOptions.map(function (option, index) {
            return _this4.renderItem(option, index);
          });
        }
  
        return null;
      }
    }, {
      key: "renderList",
      value: function renderList(visibleOptions) {
        var _this5 = this;
  
        if (this.props.virtualScrollerOptions) {
          var virtualScrollerProps = _objectSpread(_objectSpread({}, this.props.virtualScrollerOptions), {
            items: visibleOptions,
            onLazyLoad: function onLazyLoad(event) {
              return _this5.props.virtualScrollerOptions.onLazyLoad(_objectSpread(_objectSpread({}, event), {
                filter: _this5.getFilterValue()
              }));
            },
            itemTemplate: function itemTemplate(item, options) {
              return item && _this5.renderItem(item, options.index);
            },
            contentTemplate: function contentTemplate(options) {
              var className = classNames('p-listbox-list', options.className);
              return /*#__PURE__*/React.createElement("ul", {
                ref: options.contentRef,
                className: className,
                role: "listbox",
                "aria-multiselectable": _this5.props.multiple
              }, options.children);
            }
          });
  
          return /*#__PURE__*/React.createElement(VirtualScroller, _extends({
            ref: function ref(el) {
              return _this5.virtualScrollerRef = el;
            }
          }, virtualScrollerProps));
        } else {
          var items = this.renderItems(visibleOptions);
          return /*#__PURE__*/React.createElement("ul", {
            className: "p-listbox-list",
            role: "listbox",
            "aria-multiselectable": this.props.multiple
          }, items);
        }
      }
    }, {
      key: "render",
      value: function render() {
        var _this6 = this;
  
        var className = classNames('p-listbox p-component', {
          'p-disabled': this.props.disabled
        }, this.props.className);
        var listClassName = classNames('p-listbox-list-wrapper', this.props.listClassName);
        var visibleOptions = this.getVisibleOptions();
        var list = this.renderList(visibleOptions);
        var header;
  
        if (this.props.filter) {
          header = /*#__PURE__*/React.createElement(ListBoxHeader, {
            filter: this.getFilterValue(),
            onFilter: this.onFilter,
            disabled: this.props.disabled,
            filterPlaceholder: this.props.filterPlaceholder
          });
        }
  
        return /*#__PURE__*/React.createElement("div", {
          ref: function ref(el) {
            return _this6.element = el;
          },
          id: this.props.id,
          className: className,
          style: this.props.style
        }, header, /*#__PURE__*/React.createElement("div", {
          ref: function ref(el) {
            return _this6.wrapper = el;
          },
          className: listClassName,
          style: this.props.listStyle
        }, list));
      }
    }]);
  
    return ListBox;
  }(Component);
  
  _defineProperty(ListBox, "defaultProps", {
    id: null,
    value: null,
    options: null,
    optionLabel: null,
    optionValue: null,
    optionDisabled: null,
    optionGroupLabel: null,
    optionGroupChildren: null,
    optionGroupTemplate: null,
    itemTemplate: null,
    style: null,
    listStyle: null,
    listClassName: null,
    className: null,
    virtualScrollerOptions: null,
    disabled: null,
    dataKey: null,
    multiple: false,
    metaKeySelection: false,
    filter: false,
    filterBy: null,
    filterValue: null,
    filterMatchMode: 'contains',
    filterPlaceholder: null,
    filterLocale: undefined,
    tabIndex: 0,
    tooltip: null,
    tooltipOptions: null,
    ariaLabelledBy: null,
    onChange: null,
    onFilterValueChange: null
  });
  
  export { ListBox };
  