class MenuBar(gtk.UIManager):
	"""
	A menu bar using the UIManager.

	"""

	def __init__(self, parent):
		"""
		A constructor for the menu bar.

		"""
		self.parent = parent

		actions = [
			( "ActionsMenu", None, "_Actions" ),
			( "About", gtk.STOCK_ABOUT, "_About", None, None, self.on_about_menuitem_clicked),
			( "HelpMenu", None, "_Help" ),
			( "EditMenu", None, "_Edit" ),
			( "Quit", gtk.STOCK_QUIT, "_Quit", None, None, self.on_quit_menuitem_clicked),
			( "AddContact", gtk.STOCK_ADD, "_Add contact...", None, None, self.on_add_contact_menuitem_clicked),
			( "ChangeAvatar", None, "_Change avatar...", None, None, self.on_change_avatar_menuitem_clicked),
			( "Preferences", gtk.STOCK_PREFERENCES, "_Preferences", None, None, self.on_preferences_menuitem_clicked),
		]

		checkactions = [
			( "ShowOfflineContacts", None, "Show _Offline Contacts", None, None, self.on_show_offline_contacts_clicked),
		]
		actiongroup = gtk.ActionGroup("MenubarActions")
		actiongroup2 = gtk.ActionGroup("CheckActions")
		actiongroup.add_actions(actions)
		actiongroup2.add_actions(checkactions)
		actiongroup2.get_action("ShowOfflineContacts").set_menu_item_type(gtk.CheckMenuItem)
		
		gtk.UIManager.__init__(self)

		self.insert_action_group(actiongroup, -1)
		self.insert_action_group(actiongroup2, -1)

		self.add_ui_from_string( \
		'<ui>' \
		'  <menubar action="menubar" name="menubar">' \
		'    <menu action="ActionsMenu" name="ActionsMenu">' \
		'      <menuitem action="AddContact" name="AddContact"/>' \
		'      <menuitem action="ChangeAvatar" name="ChangeAvatar"/>' \
		'      <menuitem action="ShowOfflineContacts" name="ShowOfflineContacts"/>' \
		'      <separator name="sep1"/>' \
		'      <menuitem action="Quit" name="Quit"/>' \
		'    </menu>' \
		'    <menu action="EditMenu" name="EditMenu">' \
		'      <menuitem action="Preferences" name="Preferences"/>' \
		'    </menu>' \
		'    <menu action="HelpMenu" name="HelpMenu">' \
		'      <menuitem action="About" name="About"/>' \
		'    </menu>' \
		'  </menubar>' \
		'</ui>')
	
	def new(self):	
		self.ensure_update()