content: import React, { Component } from 'react';
  import { UniqueComponentId, classNames, ObjectUtils, CSSTransition } from 'primereact/core';
  
  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 _arrayWithoutHoles(arr) {
    if (Array.isArray(arr)) return _arrayLikeToArray(arr);
  }
  
  function _iterableToArray(iter) {
    if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
  }
  
  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 _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(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 _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 _assertThisInitialized(self) {
    if (self === void 0) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }
  
    return self;
  }
  
  function _possibleConstructorReturn(self, call) {
    if (call && (_typeof(call) === "object" || typeof call === "function")) {
      return call;
    }
  
    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(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 PanelMenuSub = /*#__PURE__*/function (_Component) {
    _inherits(PanelMenuSub, _Component);
  
    var _super = _createSuper(PanelMenuSub);
  
    function PanelMenuSub(props) {
      var _this;
  
      _classCallCheck(this, PanelMenuSub);
  
      _this = _super.call(this, props);
      _this.state = {
        activeItem: _this.findActiveItem()
      };
      return _this;
    }
  
    _createClass(PanelMenuSub, [{
      key: "onItemClick",
      value: function onItemClick(event, item) {
        if (item.disabled) {
          event.preventDefault();
          return;
        }
  
        if (!item.url) {
          event.preventDefault();
        }
  
        if (item.command) {
          item.command({
            originalEvent: event,
            item: item
          });
        }
  
        var activeItem = this.state.activeItem;
        var active = this.isItemActive(item);
  
        if (active) {
          item.expanded = false;
          this.setState({
            activeItem: this.props.multiple ? activeItem.filter(function (a_item) {
              return a_item !== item;
            }) : null
          });
        } else {
          if (!this.props.multiple && activeItem) {
            activeItem.expanded = false;
          }
  
          item.expanded = true;
          this.setState({
            activeItem: this.props.multiple ? [].concat(_toConsumableArray(activeItem || []), [item]) : item
          });
        }
      }
    }, {
      key: "findActiveItem",
      value: function findActiveItem() {
        if (this.props.model) {
          if (this.props.multiple) {
            return this.props.model.filter(function (item) {
              return item.expanded;
            });
          } else {
            var activeItem = null;
            this.props.model.forEach(function (item) {
              if (item.expanded) {
                if (!activeItem) activeItem = item;else item.expanded = false;
              }
            });
            return activeItem;
          }
        }
  
        return null;
      }
    }, {
      key: "isItemActive",
      value: function isItemActive(item) {
        return this.state.activeItem && (this.props.multiple ? this.state.activeItem.indexOf(item) > -1 : this.state.activeItem === item);
      }
    }, {
      key: "renderSeparator",
      value: function renderSeparator(index) {
        return /*#__PURE__*/React.createElement("li", {
          key: 'separator_' + index,
          className: "p-menu-separator"
        });
      }
    }, {
      key: "renderSubmenu",
      value: function renderSubmenu(item, active) {
        var submenuWrapperClassName = classNames('p-toggleable-content', {
          'p-toggleable-content-collapsed': !active
        });
        var submenuContentRef = /*#__PURE__*/React.createRef();
  
        if (item.items) {
          return /*#__PURE__*/React.createElement(CSSTransition, {
            nodeRef: submenuContentRef,
            classNames: "p-toggleable-content",
            timeout: {
              enter: 1000,
              exit: 450
            },
            in: active,
            unmountOnExit: true
          }, /*#__PURE__*/React.createElement("div", {
            ref: submenuContentRef,
            className: submenuWrapperClassName
          }, /*#__PURE__*/React.createElement(PanelMenuSub, {
            model: item.items,
            multiple: this.props.multiple
          })));
        }
  
        return null;
      }
    }, {
      key: "renderMenuitem",
      value: function renderMenuitem(item, index) {
        var _this2 = this;
  
        var active = this.isItemActive(item);
        var className = classNames('p-menuitem', item.className);
        var linkClassName = classNames('p-menuitem-link', {
          'p-disabled': item.disabled
        });
        var iconClassName = classNames('p-menuitem-icon', item.icon);
        var submenuIconClassName = classNames('p-panelmenu-icon pi pi-fw', {
          'pi-angle-right': !active,
          'pi-angle-down': active
        });
        var icon = item.icon && /*#__PURE__*/React.createElement("span", {
          className: iconClassName
        });
        var label = item.label && /*#__PURE__*/React.createElement("span", {
          className: "p-menuitem-text"
        }, item.label);
        var submenuIcon = item.items && /*#__PURE__*/React.createElement("span", {
          className: submenuIconClassName
        });
        var submenu = this.renderSubmenu(item, active);
        var content = /*#__PURE__*/React.createElement("a", {
          href: item.url || '#',
          className: linkClassName,
          target: item.target,
          onClick: function onClick(event) {
            return _this2.onItemClick(event, item, index);
          },
          role: "menuitem",
          "aria-disabled": item.disabled
        }, submenuIcon, icon, label);
  
        if (item.template) {
          var defaultContentOptions = {
            onClick: function onClick(event) {
              return _this2.onItemClick(event, item, index);
            },
            className: linkClassName,
            labelClassName: 'p-menuitem-text',
            iconClassName: iconClassName,
            submenuIconClassName: submenuIconClassName,
            element: content,
            props: this.props,
            leaf: !item.items,
            active: active
          };
          content = ObjectUtils.getJSXElement(item.template, item, defaultContentOptions);
        }
  
        return /*#__PURE__*/React.createElement("li", {
          key: item.label + '_' + index,
          className: className,
          style: item.style,
          role: "none"
        }, content, submenu);
      }
    }, {
      key: "renderItem",
      value: function renderItem(item, index) {
        if (item.separator) return this.renderSeparator(index);else return this.renderMenuitem(item, index);
      }
    }, {
      key: "renderMenu",
      value: function renderMenu() {
        var _this3 = this;
  
        if (this.props.model) {
          return this.props.model.map(function (item, index) {
            return _this3.renderItem(item, index);
          });
        }
  
        return null;
      }
    }, {
      key: "render",
      value: function render() {
        var className = classNames('p-submenu-list', this.props.className);
        var menu = this.renderMenu();
        return /*#__PURE__*/React.createElement("ul", {
          className: className,
          role: "tree"
        }, menu);
      }
    }]);
  
    return PanelMenuSub;
  }(Component);
  
  _defineProperty(PanelMenuSub, "defaultProps", {
    model: null,
    multiple: false
  });
  
  var PanelMenu = /*#__PURE__*/function (_Component2) {
    _inherits(PanelMenu, _Component2);
  
    var _super2 = _createSuper(PanelMenu);
  
    function PanelMenu(props) {
      var _this4;
  
      _classCallCheck(this, PanelMenu);
  
      _this4 = _super2.call(this, props);
      _this4.state = {
        id: props.id,
        activeItem: _this4.findActiveItem()
      };
      return _this4;
    }
  
    _createClass(PanelMenu, [{
      key: "onItemClick",
      value: function onItemClick(event, item) {
        if (item.disabled) {
          event.preventDefault();
          return;
        }
  
        if (!item.url) {
          event.preventDefault();
        }
  
        if (item.command) {
          item.command({
            originalEvent: event,
            item: item
          });
        }
  
        var activeItem = this.state.activeItem;
        var active = this.isItemActive(item);
  
        if (active) {
          item.expanded = false;
          this.setState({
            activeItem: this.props.multiple ? activeItem.filter(function (a_item) {
              return a_item !== item;
            }) : null
          });
        } else {
          if (!this.props.multiple && activeItem) {
            activeItem.expanded = false;
          }
  
          item.expanded = true;
          this.setState({
            activeItem: this.props.multiple ? [].concat(_toConsumableArray(activeItem || []), [item]) : item
          });
        }
      }
    }, {
      key: "findActiveItem",
      value: function findActiveItem() {
        if (this.props.model) {
          if (this.props.multiple) {
            return this.props.model.filter(function (item) {
              return item.expanded;
            });
          } else {
            var activeItem = null;
            this.props.model.forEach(function (item) {
              if (item.expanded) {
                if (!activeItem) activeItem = item;else item.expanded = false;
              }
            });
            return activeItem;
          }
        }
  
        return null;
      }
    }, {
      key: "isItemActive",
      value: function isItemActive(item) {
        return this.state.activeItem && (this.props.multiple ? this.state.activeItem.indexOf(item) > -1 : this.state.activeItem === item);
      }
    }, {
      key: "componentDidMount",
      value: function componentDidMount() {
        if (!this.state.id) {
          this.setState({
            id: UniqueComponentId()
          });
        }
      }
    }, {
      key: "renderPanel",
      value: function renderPanel(item, index) {
        var _this5 = this;
  
        var active = this.isItemActive(item);
        var className = classNames('p-panelmenu-panel', item.className);
        var headerClassName = classNames('p-component p-panelmenu-header', {
          'p-highlight': active,
          'p-disabled': item.disabled
        });
        var submenuIconClassName = classNames('p-panelmenu-icon pi', {
          'pi-chevron-right': !active,
          ' pi-chevron-down': active
        });
        var iconClassName = classNames('p-menuitem-icon', item.icon);
        var submenuIcon = item.items && /*#__PURE__*/React.createElement("span", {
          className: submenuIconClassName
        });
        var itemIcon = item.icon && /*#__PURE__*/React.createElement("span", {
          className: iconClassName
        });
        var label = item.label && /*#__PURE__*/React.createElement("span", {
          className: "p-menuitem-text"
        }, item.label);
        var contentWrapperClassName = classNames('p-toggleable-content', {
          'p-toggleable-content-collapsed': !active
        });
        var menuContentRef = /*#__PURE__*/React.createRef();
        var content = /*#__PURE__*/React.createElement("a", {
          href: item.url || '#',
          className: "p-panelmenu-header-link",
          onClick: function onClick(e) {
            return _this5.onItemClick(e, item);
          },
          "aria-expanded": active,
          id: this.state.id + '_header',
          "aria-controls": this.state.id + 'content',
          "aria-disabled": item.disabled
        }, submenuIcon, itemIcon, label);
  
        if (item.template) {
          var defaultContentOptions = {
            onClick: function onClick(event) {
              return _this5.onItemClick(event, item);
            },
            className: 'p-panelmenu-header-link',
            labelClassName: 'p-menuitem-text',
            submenuIconClassName: submenuIconClassName,
            iconClassName: iconClassName,
            element: content,
            props: this.props,
            leaf: !item.items,
            active: active
          };
          content = ObjectUtils.getJSXElement(item.template, item, defaultContentOptions);
        }
  
        return /*#__PURE__*/React.createElement("div", {
          key: item.label + '_' + index,
          className: className,
          style: item.style
        }, /*#__PURE__*/React.createElement("div", {
          className: headerClassName,
          style: item.style
        }, content), /*#__PURE__*/React.createElement(CSSTransition, {
          nodeRef: menuContentRef,
          classNames: "p-toggleable-content",
          timeout: {
            enter: 1000,
            exit: 450
          },
          in: active,
          unmountOnExit: true,
          options: this.props.transitionOptions
        }, /*#__PURE__*/React.createElement("div", {
          ref: menuContentRef,
          className: contentWrapperClassName,
          role: "region",
          id: this.state.id + '_content',
          "aria-labelledby": this.state.id + '_header'
        }, /*#__PURE__*/React.createElement("div", {
          className: "p-panelmenu-content"
        }, /*#__PURE__*/React.createElement(PanelMenuSub, {
          model: item.items,
          className: "p-panelmenu-root-submenu",
          multiple: this.props.multiple
        })))));
      }
    }, {
      key: "renderPanels",
      value: function renderPanels() {
        var _this6 = this;
  
        if (this.props.model) {
          return this.props.model.map(function (item, index) {
            return _this6.renderPanel(item, index);
          });
        }
  
        return null;
      }
    }, {
      key: "render",
      value: function render() {
        var className = classNames('p-panelmenu p-component', this.props.className);
        var panels = this.renderPanels();
        return /*#__PURE__*/React.createElement("div", {
          id: this.props.id,
          className: className,
          style: this.props.style
        }, panels);
      }
    }]);
  
    return PanelMenu;
  }(Component);
  
  _defineProperty(PanelMenu, "defaultProps", {
    id: null,
    model: null,
    style: null,
    className: null,
    multiple: false,
    transitionOptions: null
  });
  
  export { PanelMenu };
  