Build node-webkit style Menu API arounding the delegate-style Menu API.

browser/api/lib/menu_item.coffee

@@ -0,0 +1,18 @@
+nextCommandId = 0
+
+class MenuItem
+  @types = ['normal', 'separator', 'submenu', 'checkbox', 'radio']
+
+  constructor: (options) ->
+    {@type, @label, @sublabel, @click, @checked, @groupId, @submenu} = options
+
+    @type = @type ? 'normal'
+    @label = @label ? ''
+    @sublabel = @sublabel ? ''
+
+    throw new Error('Unknown menu type') if MenuItem.types.indexOf(@type) is -1
+    throw new Error('Invalid menu') if @type is 'submenu' and @submenu?.constructor.name isnt 'Menu'
+
+    @commandId = ++nextCommandId
+
+module.exports = MenuItem