electron/lib/browser/api/menu-item.js
2016-06-22 13:48:26 -07:00

87 lines
2.5 KiB
JavaScript

'use strict'
const roles = require('./menu-item-roles')
let nextCommandId = 0
const MenuItem = function (options) {
const {app, Menu} = require('electron')
this.selector = options.selector
this.type = options.type
this.role = options.role
this.label = options.label
this.sublabel = options.sublabel
this.accelerator = options.accelerator
this.icon = options.icon
this.enabled = options.enabled
this.visible = options.visible
this.checked = options.checked
this.submenu = options.submenu
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', roles.getDefaultAccelerator(this.role))
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)
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) => {
// Manually flip the checked flags when clicked.
if (this.type === 'checkbox' || this.type === 'radio') {
this.checked = !this.checked
}
if (!roles.execute(this.role)) {
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.overrideProperty = function (name, defaultValue) {
if (defaultValue == null) {
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