primereact/megamenu/megamenu.esm.js

PrimeReact is an open source UI library for React featuring a rich set of 80+ components, a theme designer, various theme alternatives such as Material, Bootstrap, Tailwind, premium templates and professional support. In addition, it integrates with Prime

import * as React from 'react';
import PrimeReact from 'primereact/api';
import { useEventListener, useMountEffect, useUpdateEffect } from 'primereact/hooks';
import { Ripple } from 'primereact/ripple';
import { DomHandler, ZIndexUtils, ObjectUtils, classNames, IconUtils } from 'primereact/utils';

function _extends() {
  _extends = Object.assign ? Object.assign.bind() : 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 _arrayWithHoles(arr) {
  if (Array.isArray(arr)) return arr;
}

function _iterableToArrayLimit(arr, i) {
  var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"];

  if (_i == null) return;
  var _arr = [];
  var _n = true;
  var _d = false;

  var _s, _e;

  try {
    for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) {
      _arr.push(_s.value);

      if (i && _arr.length === i) break;
    }
  } catch (err) {
    _d = true;
    _e = err;
  } finally {
    try {
      if (!_n && _i["return"] != null) _i["return"]();
    } finally {
      if (_d) throw _e;
    }
  }

  return _arr;
}

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 _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 _nonIterableRest() {
  throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

function _slicedToArray(arr, i) {
  return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
}

var MegaMenu = /*#__PURE__*/React.memo( /*#__PURE__*/React.forwardRef(function (props, ref) {
  var _React$useState = React.useState(null),
      _React$useState2 = _slicedToArray(_React$useState, 2),
      activeItemState = _React$useState2[0],
      setActiveItemState = _React$useState2[1];

  var elementRef = React.useRef(null);
  var horizontal = props.orientation === 'horizontal';
  var vertical = props.orientation === 'vertical';

  var _useEventListener = useEventListener({
    type: 'click',
    listener: function listener(event) {
      isOutsideClicked(event) && setActiveItemState(null);
    }
  }),
      _useEventListener2 = _slicedToArray(_useEventListener, 1),
      bindDocumentClickListener = _useEventListener2[0];

  var onLeafClick = function onLeafClick(event, item) {
    if (item.disabled) {
      event.preventDefault();
      return;
    }

    if (!item.url) {
      event.preventDefault();
    }

    if (item.command) {
      item.command({
        originalEvent: event,
        item: item
      });
    }

    setActiveItemState(null);
  };

  var onCategoryMouseEnter = function onCategoryMouseEnter(event, item) {
    if (item.disabled) {
      event.preventDefault();
      return;
    }

    if (activeItemState) {
      setActiveItemState(item);
    }
  };

  var onCategoryClick = function onCategoryClick(event, item) {
    if (item.disabled) {
      event.preventDefault();
      return;
    }

    if (!item.url) {
      event.preventDefault();
    }

    if (item.command) {
      item.command({
        originalEvent: event,
        item: props.item
      });
    }

    if (item.items) {
      activeItemState && activeItemState === item ? setActiveItemState(null) : setActiveItemState(item);
    }

    event.preventDefault();
  };

  var onCategoryKeyDown = function onCategoryKeyDown(event, item) {
    var listItem = event.currentTarget.parentElement;

    switch (event.which) {
      //down
      case 40:
        horizontal ? expandMenu(item) : navigateToNextItem(listItem);
        event.preventDefault();
        break;
      //up

      case 38:
        vertical ? navigateToPrevItem(listItem) : item.items && item === activeItemState && collapseMenu();
        event.preventDefault();
        break;
      //right

      case 39:
        horizontal ? navigateToNextItem(listItem) : expandMenu(item);
        event.preventDefault();
        break;
      //left

      case 37:
        horizontal ? navigateToPrevItem(listItem) : item.items && item === activeItemState && collapseMenu();
        event.preventDefault();
        break;
    }
  };

  var expandMenu = function expandMenu(item) {
    if (item.items) {
      setActiveItemState(item);
    }
  };

  var collapseMenu = function collapseMenu(item) {
    setActiveItemState(null);
  };

  var findNextItem = function findNextItem(item) {
    var nextItem = item.nextElementSibling;
    return nextItem ? DomHandler.hasClass(nextItem, 'p-disabled') || !DomHandler.hasClass(nextItem, 'p-menuitem') ? findNextItem(nextItem) : nextItem : null;
  };

  var findPrevItem = function findPrevItem(item) {
    var prevItem = item.previousElementSibling;
    return prevItem ? DomHandler.hasClass(prevItem, 'p-disabled') || !DomHandler.hasClass(prevItem, 'p-menuitem') ? findPrevItem(prevItem) : prevItem : null;
  };

  var navigateToNextItem = function navigateToNextItem(listItem) {
    var nextItem = findNextItem(listItem);
    nextItem && nextItem.children[0].focus();
  };

  var navigateToPrevItem = function navigateToPrevItem(listItem) {
    var prevItem = findPrevItem(listItem);
    prevItem && prevItem.children[0].focus();
  };

  var isOutsideClicked = function isOutsideClicked(event) {
    return elementRef.current && !(elementRef.current.isSameNode(event.target) || elementRef.current.contains(event.target));
  };

  var getColumnClassName = function getColumnClassName(category) {
    var length = category.items ? category.items.length : 0;
    var columnClass;

    switch (length) {
      case 2:
        columnClass = 'p-megamenu-col-6';
        break;

      case 3:
        columnClass = 'p-megamenu-col-4';
        break;

      case 4:
        columnClass = 'p-megamenu-col-3';
        break;

      case 6:
        columnClass = 'p-megamenu-col-2';
        break;

      default:
        columnClass = 'p-megamenu-col-12';
        break;
    }

    return columnClass;
  };

  React.useImperativeHandle(ref, function () {
    return {
      props: props,
      getElement: function getElement() {
        return elementRef.current;
      }
    };
  });
  useMountEffect(function () {
    bindDocumentClickListener();
  });
  useUpdateEffect(function () {
    var currentPanel = DomHandler.findSingle(elementRef.current, '.p-menuitem-active > .p-megamenu-panel');

    if (activeItemState) {
      ZIndexUtils.set('menu', currentPanel, PrimeReact.autoZIndex, PrimeReact.zIndex['menu']);
    }

    return function () {
      ZIndexUtils.clear(currentPanel);
    };
  }, [activeItemState]);

  var createSeparator = function createSeparator(index) {
    var key = 'separator_' + index;
    return /*#__PURE__*/React.createElement("li", {
      key: key,
      className: "p-menu-separator",
      role: "separator"
    });
  };

  var createSubmenuIcon = function createSubmenuIcon(item) {
    if (item.items) {
      var _className = classNames('p-submenu-icon pi', {
        'pi-angle-down': horizontal,
        'pi-angle-right': vertical
      });

      return /*#__PURE__*/React.createElement("span", {
        className: _className
      });
    }

    return null;
  };

  var createSubmenuItem = function createSubmenuItem(item, index) {
    if (item.visible === false) {
      return null;
    }

    if (item.separator) {
      return createSeparator(index);
    } else {
      var key = item.label + '_' + index;

      var _className2 = classNames('p-menuitem', item.className);

      var linkClassName = classNames('p-menuitem-link', {
        'p-disabled': item.disabled
      });
      var iconClassName = classNames(item.icon, 'p-menuitem-icon');
      var icon = IconUtils.getJSXIcon(item.icon, {
        className: 'p-menuitem-icon'
      }, {
        props: props
      });
      var label = item.label && /*#__PURE__*/React.createElement("span", {
        className: "p-menuitem-text"
      }, item.label);
      var content = /*#__PURE__*/React.createElement("a", {
        href: item.url || '#',
        className: linkClassName,
        target: item.target,
        onClick: function onClick(event) {
          return onLeafClick(event, item);
        },
        role: "menuitem",
        "aria-disabled": item.disabled
      }, icon, label, /*#__PURE__*/React.createElement(Ripple, null));

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

      return /*#__PURE__*/React.createElement("li", {
        key: key,
        id: item.id,
        className: _className2,
        style: item.style,
        role: "none"
      }, content);
    }
  };

  var createSubmenu = function createSubmenu(submenu) {
    var className = classNames('p-megamenu-submenu-header', {
      'p-disabled': submenu.disabled
    }, submenu.className);
    var items = submenu.items.map(createSubmenuItem);
    return /*#__PURE__*/React.createElement(React.Fragment, {
      key: submenu.label
    }, /*#__PURE__*/React.createElement("li", {
      id: submenu.id,
      className: className,
      style: submenu.style,
      role: "presentation"
    }, submenu.label), items);
  };

  var createSubmenus = function createSubmenus(column) {
    return column.map(createSubmenu);
  };

  var createColumn = function createColumn(category, column, index, columnClassName) {
    var key = category.label + '_column_' + index;
    var submenus = createSubmenus(column);
    return /*#__PURE__*/React.createElement("div", {
      key: key,
      className: columnClassName
    }, /*#__PURE__*/React.createElement("ul", {
      className: "p-megamenu-submenu",
      role: "menu"
    }, submenus));
  };

  var createColumns = function createColumns(category) {
    if (category.items) {
      var columnClassName = getColumnClassName(category);
      return category.items.map(function (column, index) {
        return createColumn(category, column, index, columnClassName);
      });
    }

    return null;
  };

  var createCategoryPanel = function createCategoryPanel(category) {
    if (category.items) {
      var columns = createColumns(category);
      return /*#__PURE__*/React.createElement("div", {
        className: "p-megamenu-panel"
      }, /*#__PURE__*/React.createElement("div", {
        className: "p-megamenu-grid"
      }, columns));
    }

    return null;
  };

  var createCategory = function createCategory(category, index) {
    var className = classNames('p-menuitem', {
      'p-menuitem-active': category === activeItemState
    }, category.className);
    var linkClassName = classNames('p-menuitem-link', {
      'p-disabled': category.disabled
    });
    var icon = IconUtils.getJSXIcon(category.icon, {
      className: 'p-menuitem-icon'
    }, {
      props: props
    });
    var label = category.label && /*#__PURE__*/React.createElement("span", {
      className: "p-menuitem-text"
    }, category.label);
    var itemContent = category.template ? ObjectUtils.getJSXElement(category.template, category) : null;
    var submenuIcon = createSubmenuIcon(category);
    var panel = createCategoryPanel(category);
    return /*#__PURE__*/React.createElement("li", {
      key: category.label + '_' + index,
      id: category.id,
      className: className,
      style: category.style,
      onMouseEnter: function onMouseEnter(e) {
        return onCategoryMouseEnter(e, category);
      },
      role: "none"
    }, /*#__PURE__*/React.createElement("a", {
      href: category.url || '#',
      className: linkClassName,
      target: category.target,
      onClick: function onClick(e) {
        return onCategoryClick(e, category);
      },
      onKeyDown: function onKeyDown(e) {
        return onCategoryKeyDown(e, category);
      },
      role: "menuitem",
      "aria-haspopup": category.items != null
    }, icon, label, itemContent, submenuIcon, /*#__PURE__*/React.createElement(Ripple, null)), panel);
  };

  var createMenu = function createMenu() {
    if (props.model) {
      return /*#__PURE__*/React.createElement("ul", {
        className: "p-megamenu-root-list",
        role: "menubar"
      }, props.model.map(function (item, index) {
        return createCategory(item, index);
      }));
    }

    return null;
  };

  var createStartContent = function createStartContent() {
    if (props.start) {
      var _start = ObjectUtils.getJSXElement(props.start, props);

      return /*#__PURE__*/React.createElement("div", {
        className: "p-megamenu-start"
      }, _start);
    }

    return null;
  };

  var createEndContent = function createEndContent() {
    if (props.end) {
      var _end = ObjectUtils.getJSXElement(props.end, props);

      return /*#__PURE__*/React.createElement("div", {
        className: "p-megamenu-end"
      }, _end);
    }

    return null;
  };

  var otherProps = ObjectUtils.findDiffKeys(props, MegaMenu.defaultProps);
  var className = classNames('p-megamenu p-component', {
    'p-megamenu-horizontal': props.orientation === 'horizontal',
    'p-megamenu-vertical': props.orientation === 'vertical'
  }, props.className);
  var menu = createMenu();
  var start = createStartContent();
  var end = createEndContent();
  return /*#__PURE__*/React.createElement("div", _extends({
    ref: elementRef,
    id: props.id,
    className: className,
    style: props.style
  }, otherProps), start, menu, end);
}));
MegaMenu.displayName = 'MegaMenu';
MegaMenu.defaultProps = {
  __TYPE: 'MegaMenu',
  id: null,
  model: null,
  style: null,
  className: null,
  orientation: 'horizontal',
  start: null,
  end: null
};

export { MegaMenu };