text: 'use strict'
  
  const roles = require('@electron/internal/browser/api/menu-item-roles')
  
  let nextCommandId = 0
  
  const MenuItem = function (options) {
    const { Menu } = require('electron')
  
    // Preserve extra fields specified by user
    for (const key in options) {
      if (!(key in this)) this[key] = options[key]
    }
    if (typeof this.role === 'string' || this.role instanceof String) {
      this.role = this.role.toLowerCase()
    }
    this.submenu = this.submenu || roles.getDefaultSubmenu(this.role)
    if (this.submenu != null && this.submenu.constructor !== Menu) {
      this.submenu = Menu.buildFromTemplate(this.submenu)
    }
    if (this.type == null && this.submenu != null) {
      this.type = 'submenu'
    }
    if (this.type === 'submenu' && (this.submenu == null || this.submenu.constructor !== Menu)) {
      throw new Error('Invalid submenu')
    }
  
    this.overrideReadOnlyProperty('type', 'normal')
    this.overrideReadOnlyProperty('role')
    this.overrideReadOnlyProperty('accelerator')
    this.overrideReadOnlyProperty('icon')
    this.overrideReadOnlyProperty('submenu')
  
    this.overrideProperty('label', roles.getDefaultLabel(this.role))
    this.overrideProperty('sublabel', '')
    this.overrideProperty('enabled', true)
    this.overrideProperty('visible', true)
    this.overrideProperty('checked', false)
    this.overrideProperty('acceleratorWorksWhenHidden', true)
    this.overrideProperty('registerAccelerator', roles.shouldRegisterAccelerator(this.role))
  
    if (!MenuItem.types.includes(this.type)) {
      throw new Error(`Unknown menu item type: ${this.type}`)
    }
  
    this.overrideReadOnlyProperty('commandId', ++nextCommandId)
  
    const click = options.click
    this.click = (event, focusedWindow, focusedWebContents) => {
      // Manually flip the checked flags when clicked.
      if (this.type === 'checkbox' || this.type === 'radio') {
        this.checked = !this.checked
      }
  
      if (!roles.execute(this.role, focusedWindow, focusedWebContents)) {
        if (typeof click === 'function') {
          click(this, focusedWindow, event)
        } else if (typeof this.selector === 'string' && process.platform === 'darwin') {
          Menu.sendActionToFirstResponder(this.selector)
        }
      }
    }
  }
  
  MenuItem.types = ['normal', 'separator', 'submenu', 'checkbox', 'radio']
  
  MenuItem.prototype.getDefaultRoleAccelerator = function () {
    return roles.getDefaultAccelerator(this.role)
  }
  
  MenuItem.prototype.overrideProperty = function (name, defaultValue = null) {
    if (this[name] == null) {
      this[name] = defaultValue
    }
  }
  
  MenuItem.prototype.overrideReadOnlyProperty = function (name, defaultValue) {
    this.overrideProperty(name, defaultValue)
    Object.defineProperty(this, name, {
      enumerable: true,
      writable: false,
      value: this[name]
    })
  }
  
  module.exports = MenuItem
  