@carbon/react/es/components/Menu/MenuContext.js

React components for the Carbon Design System

/**
 * Copyright IBM Corp. 2016, 2023
 *
 * This source code is licensed under the Apache-2.0 license found in the
 * LICENSE file in the root directory of this source tree.
 */

import { createContext } from 'react';

const menuDefaultState = {
  isRoot: true,
  hasIcons: false,
  hasSelectableItems: false,
  size: null,
  items: [],
  requestCloseRoot: () => {}
};
function menuReducer(state, action) {
  switch (action.type) {
    case 'enableIcons':
      return {
        ...state,
        hasIcons: true
      };
    case 'enableSelectableItems':
      return {
        ...state,
        hasSelectableItems: true
      };
    case 'registerItem':
      {
        const newItem = action.payload;
        const items = state.items.filter(item => item.ref.current);
        const next = newItem.ref.current?.nextElementSibling;
        const idx = items.findIndex(item => item.ref.current === next);
        items.splice(idx < 0 ? items.length : idx, 0, newItem);
        return {
          ...state,
          items
        };
      }
  }
}
const MenuContext = /*#__PURE__*/createContext({
  state: menuDefaultState,
  // 'dispatch' is populated by the root menu
  dispatch: _ => {}
});

export { MenuContext, menuReducer };