import React, { Component } from 'react';
import { DomHandler, classNames, ObjectUtils, ZIndexUtils, ConnectedOverlayScrollHandler } from 'primereact/utils';
import { Ripple } from 'primereact/ripple';
import { CSSTransition } from 'primereact/csstransition';
import { OverlayService } from 'primereact/overlayservice';
import { Portal } from 'primereact/portal';
import PrimeReact from 'primereact/api';

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);
  Object.defineProperty(Constructor, "prototype", {
    writable: false
  });
  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
    }
  });
  Object.defineProperty(subClass, "prototype", {
    writable: false
  });
  if (superClass) _setPrototypeOf(subClass, superClass);
}

function _typeof(obj) {
  "@babel/helpers - typeof";

  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
    return typeof obj;
  } : function (obj) {
    return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
  }, _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$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 TieredMenuSub = /*#__PURE__*/function (_Component) {
  _inherits(TieredMenuSub, _Component);

  var _super = _createSuper$1(TieredMenuSub);

  function TieredMenuSub(props) {
    var _this;

    _classCallCheck(this, TieredMenuSub);

    _this = _super.call(this, props);
    _this.state = {
      activeItem: null
    };
    _this.onLeafClick = _this.onLeafClick.bind(_assertThisInitialized(_this));
    _this.onChildItemKeyDown = _this.onChildItemKeyDown.bind(_assertThisInitialized(_this));
    return _this;
  }

  _createClass(TieredMenuSub, [{
    key: "componentDidUpdate",
    value: function componentDidUpdate(prevProps) {
      if (prevProps.parentActive && !this.props.parentActive) {
        this.setState({
          activeItem: null
        });
      }

      if (this.props.parentActive && !this.props.root) {
        this.position();
      }
    }
  }, {
    key: "componentDidMount",
    value: function componentDidMount() {
      var _this2 = this;

      if (!this.documentClickListener) {
        this.documentClickListener = function (event) {
          if (_this2.element && !_this2.element.contains(event.target)) {
            _this2.setState({
              activeItem: null
            });
          }
        };

        document.addEventListener('click', this.documentClickListener);
      }
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      if (this.documentClickListener) {
        document.removeEventListener('click', this.documentClickListener);
        this.documentClickListener = null;
      }
    }
  }, {
    key: "position",
    value: function position() {
      if (this.element) {
        var parentItem = this.element.parentElement;
        var containerOffset = DomHandler.getOffset(parentItem);
        var viewport = DomHandler.getViewport();
        var sublistWidth = this.element.offsetParent ? this.element.offsetWidth : DomHandler.getHiddenElementOuterWidth(this.element);
        var itemOuterWidth = DomHandler.getOuterWidth(parentItem.children[0]);

        if (parseInt(containerOffset.left, 10) + itemOuterWidth + sublistWidth > viewport.width - DomHandler.calculateScrollbarWidth()) {
          DomHandler.addClass(this.element, 'p-submenu-list-flipped');
        }
      }
    }
  }, {
    key: "onItemMouseEnter",
    value: function onItemMouseEnter(event, item) {
      if (item.disabled) {
        event.preventDefault();
        return;
      }

      if (this.props.root) {
        if (this.state.activeItem || this.props.popup) {
          this.setState({
            activeItem: item
          });
        }
      } else {
        this.setState({
          activeItem: item
        });
      }
    }
  }, {
    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
        });
      }

      if (this.props.root) {
        if (item.items) {
          if (this.state.activeItem && item === this.state.activeItem) {
            this.setState({
              activeItem: null
            });
          } else {
            this.setState({
              activeItem: item
            });
          }
        }
      }

      if (!item.items) {
        this.onLeafClick();
      }
    }
  }, {
    key: "onItemKeyDown",
    value: function onItemKeyDown(event, item) {
      var listItem = event.currentTarget.parentElement;

      switch (event.which) {
        //down
        case 40:
          var nextItem = this.findNextItem(listItem);

          if (nextItem) {
            nextItem.children[0].focus();
          }

          event.preventDefault();
          break;
        //up

        case 38:
          var prevItem = this.findPrevItem(listItem);

          if (prevItem) {
            prevItem.children[0].focus();
          }

          event.preventDefault();
          break;
        //right

        case 39:
          if (item.items) {
            this.setState({
              activeItem: item
            });
            setTimeout(function () {
              listItem.children[1].children[0].children[0].focus();
            }, 50);
          }

          event.preventDefault();
          break;
      }

      if (this.props.onKeyDown) {
        this.props.onKeyDown(event, listItem);
      }
    }
  }, {
    key: "onChildItemKeyDown",
    value: function onChildItemKeyDown(event, childListItem) {
      //left
      if (event.which === 37) {
        this.setState({
          activeItem: null
        });
        childListItem.parentElement.previousElementSibling.focus();
      }
    }
  }, {
    key: "findNextItem",
    value: function findNextItem(item) {
      var nextItem = item.nextElementSibling;
      if (nextItem) return DomHandler.hasClass(nextItem, 'p-disabled') || !DomHandler.hasClass(nextItem, 'p-menuitem') ? 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-menuitem') ? this.findPrevItem(prevItem) : prevItem;else return null;
    }
  }, {
    key: "onLeafClick",
    value: function onLeafClick() {
      this.setState({
        activeItem: null
      });

      if (this.props.onLeafClick) {
        this.props.onLeafClick();
      }
    }
  }, {
    key: "renderSeparator",
    value: function renderSeparator(index) {
      return /*#__PURE__*/React.createElement("li", {
        key: 'separator_' + index,
        className: "p-menu-separator",
        role: "separator"
      });
    }
  }, {
    key: "renderSubmenu",
    value: function renderSubmenu(item) {
      if (item.items) {
        return /*#__PURE__*/React.createElement(TieredMenuSub, {
          model: item.items,
          onLeafClick: this.onLeafClick,
          popup: this.props.popup,
          onKeyDown: this.onChildItemKeyDown,
          parentActive: item === this.state.activeItem
        });
      }

      return null;
    }
  }, {
    key: "renderMenuitem",
    value: function renderMenuitem(item, index) {
      var _this3 = this;

      var active = this.state.activeItem === item;
      var className = classNames('p-menuitem', {
        'p-menuitem-active': active
      }, item.className);
      var linkClassName = classNames('p-menuitem-link', {
        'p-disabled': item.disabled
      });
      var iconClassName = classNames('p-menuitem-icon', item.icon);
      var submenuIconClassName = 'p-submenu-icon pi pi-angle-right';
      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);
      var content = /*#__PURE__*/React.createElement("a", {
        href: item.url || '#',
        className: linkClassName,
        target: item.target,
        role: "menuitem",
        "aria-haspopup": item.items != null,
        onClick: function onClick(event) {
          return _this3.onItemClick(event, item);
        },
        onKeyDown: function onKeyDown(event) {
          return _this3.onItemKeyDown(event, item);
        },
        "aria-disabled": item.disabled
      }, icon, label, submenuIcon, /*#__PURE__*/React.createElement(Ripple, null));

      if (item.template) {
        var defaultContentOptions = {
          onClick: function onClick(event) {
            return _this3.onItemClick(event, item);
          },
          onKeyDown: function onKeyDown(event) {
            return _this3.onItemKeyDown(event, item);
          },
          className: linkClassName,
          labelClassName: 'p-menuitem-text',
          iconClassName: iconClassName,
          submenuIconClassName: submenuIconClassName,
          element: content,
          props: this.props,
          active: active
        };
        content = ObjectUtils.getJSXElement(item.template, item, defaultContentOptions);
      }

      return /*#__PURE__*/React.createElement("li", {
        key: item.label + '_' + index,
        className: className,
        style: item.style,
        onMouseEnter: function onMouseEnter(event) {
          return _this3.onItemMouseEnter(event, item);
        },
        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 _this4 = this;

      if (this.props.model) {
        return this.props.model.map(function (item, index) {
          return _this4.renderItem(item, index);
        });
      }

      return null;
    }
  }, {
    key: "render",
    value: function render() {
      var _this5 = this;

      var className = classNames({
        'p-submenu-list': !this.props.root
      });
      var submenu = this.renderMenu();
      return /*#__PURE__*/React.createElement("ul", {
        ref: function ref(el) {
          return _this5.element = el;
        },
        className: className,
        role: this.props.root ? 'menubar' : 'menu',
        "aria-orientation": "horizontal"
      }, submenu);
    }
  }]);

  return TieredMenuSub;
}(Component);

_defineProperty(TieredMenuSub, "defaultProps", {
  model: null,
  root: false,
  className: null,
  popup: false,
  onLeafClick: null,
  onKeyDown: null,
  parentActive: false
});

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

  var _super = _createSuper(TieredMenu);

  function TieredMenu(props) {
    var _this;

    _classCallCheck(this, TieredMenu);

    _this = _super.call(this, props);
    _this.state = {
      visible: !props.popup
    };
    _this.onEnter = _this.onEnter.bind(_assertThisInitialized(_this));
    _this.onEntered = _this.onEntered.bind(_assertThisInitialized(_this));
    _this.onExit = _this.onExit.bind(_assertThisInitialized(_this));
    _this.onExited = _this.onExited.bind(_assertThisInitialized(_this));
    _this.onPanelClick = _this.onPanelClick.bind(_assertThisInitialized(_this));
    _this.menuRef = /*#__PURE__*/React.createRef();
    return _this;
  }

  _createClass(TieredMenu, [{
    key: "onPanelClick",
    value: function onPanelClick(event) {
      if (this.props.popup) {
        OverlayService.emit('overlay-click', {
          originalEvent: event,
          target: this.target
        });
      }
    }
  }, {
    key: "toggle",
    value: function toggle(event) {
      if (this.props.popup) {
        if (this.state.visible) this.hide(event);else this.show(event);
      }
    }
  }, {
    key: "show",
    value: function show(event) {
      var _this2 = this;

      this.target = event.currentTarget;
      var currentEvent = event;
      this.setState({
        visible: true
      }, function () {
        if (_this2.props.onShow) {
          _this2.props.onShow(currentEvent);
        }
      });
    }
  }, {
    key: "hide",
    value: function hide(event) {
      var _this3 = this;

      var currentEvent = event;
      this.setState({
        visible: false
      }, function () {
        if (_this3.props.onHide) {
          _this3.props.onHide(currentEvent);
        }
      });
    }
  }, {
    key: "onEnter",
    value: function onEnter() {
      if (this.props.autoZIndex) {
        ZIndexUtils.set('menu', this.menuRef.current, PrimeReact.autoZIndex, this.props.baseZIndex || PrimeReact.zIndex['menu']);
      }

      DomHandler.absolutePosition(this.menuRef.current, this.target);
    }
  }, {
    key: "onEntered",
    value: function onEntered() {
      this.bindDocumentListeners();
      this.bindScrollListener();
    }
  }, {
    key: "onExit",
    value: function onExit() {
      this.target = null;
      this.unbindDocumentListeners();
      this.unbindScrollListener();
    }
  }, {
    key: "onExited",
    value: function onExited() {
      ZIndexUtils.clear(this.menuRef.current);
    }
  }, {
    key: "bindDocumentListeners",
    value: function bindDocumentListeners() {
      this.bindDocumentClickListener();
      this.bindDocumentResizeListener();
    }
  }, {
    key: "unbindDocumentListeners",
    value: function unbindDocumentListeners() {
      this.unbindDocumentClickListener();
      this.unbindDocumentResizeListener();
    }
  }, {
    key: "bindDocumentClickListener",
    value: function bindDocumentClickListener() {
      var _this4 = this;

      if (!this.documentClickListener) {
        this.documentClickListener = function (event) {
          if (_this4.props.popup && _this4.state.visible && _this4.menuRef.current && !_this4.menuRef.current.contains(event.target)) {
            _this4.hide(event);
          }
        };

        document.addEventListener('click', this.documentClickListener);
      }
    }
  }, {
    key: "unbindDocumentClickListener",
    value: function unbindDocumentClickListener() {
      if (this.documentClickListener) {
        document.removeEventListener('click', this.documentClickListener);
        this.documentClickListener = null;
      }
    }
  }, {
    key: "bindDocumentResizeListener",
    value: function bindDocumentResizeListener() {
      var _this5 = this;

      if (!this.documentResizeListener) {
        this.documentResizeListener = function (event) {
          if (_this5.state.visible && !DomHandler.isTouchDevice()) {
            _this5.hide(event);
          }
        };

        window.addEventListener('resize', this.documentResizeListener);
      }
    }
  }, {
    key: "unbindDocumentResizeListener",
    value: function unbindDocumentResizeListener() {
      if (this.documentResizeListener) {
        window.removeEventListener('resize', this.documentResizeListener);
        this.documentResizeListener = null;
      }
    }
  }, {
    key: "bindScrollListener",
    value: function bindScrollListener() {
      var _this6 = this;

      if (!this.scrollHandler) {
        this.scrollHandler = new ConnectedOverlayScrollHandler(this.target, function (event) {
          if (_this6.state.visible) {
            _this6.hide(event);
          }
        });
      }

      this.scrollHandler.bindScrollListener();
    }
  }, {
    key: "unbindScrollListener",
    value: function unbindScrollListener() {
      if (this.scrollHandler) {
        this.scrollHandler.unbindScrollListener();
      }
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      this.unbindDocumentListeners();

      if (this.scrollHandler) {
        this.scrollHandler.destroy();
        this.scrollHandler = null;
      }

      ZIndexUtils.clear(this.menuRef.current);
    }
  }, {
    key: "renderElement",
    value: function renderElement() {
      var className = classNames('p-tieredmenu p-component', {
        'p-tieredmenu-overlay': this.props.popup
      }, this.props.className);
      return /*#__PURE__*/React.createElement(CSSTransition, {
        nodeRef: this.menuRef,
        classNames: "p-connected-overlay",
        "in": this.state.visible,
        timeout: {
          enter: 120,
          exit: 100
        },
        options: this.props.transitionOptions,
        unmountOnExit: true,
        onEnter: this.onEnter,
        onEntered: this.onEntered,
        onExit: this.onExit,
        onExited: this.onExited
      }, /*#__PURE__*/React.createElement("div", {
        ref: this.menuRef,
        id: this.props.id,
        className: className,
        style: this.props.style,
        onClick: this.onPanelClick
      }, /*#__PURE__*/React.createElement(TieredMenuSub, {
        model: this.props.model,
        root: true,
        popup: this.props.popup
      })));
    }
  }, {
    key: "render",
    value: function render() {
      var element = this.renderElement();
      return this.props.popup ? /*#__PURE__*/React.createElement(Portal, {
        element: element,
        appendTo: this.props.appendTo
      }) : element;
    }
  }]);

  return TieredMenu;
}(Component);

_defineProperty(TieredMenu, "defaultProps", {
  id: null,
  model: null,
  popup: false,
  style: null,
  className: null,
  autoZIndex: true,
  baseZIndex: 0,
  appendTo: null,
  transitionOptions: null,
  onShow: null,
  onHide: null
});

export { TieredMenu };