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import dbus
import dbus.service
from dbus import glib
from dbus.mainloop.glib import DBusGMainLoop
from gi.repository import GObject
from gi.repository import GLib
from gi.repository import Gio
SERVICE_NAME = "com.canonical.test"
INTERFACE_NAME = "com.canonical.test.menuscript"
OBJECT_PATH = "/com/canonical/test/menuscript"
MENU_SERVICE_NAME= SERVICE_NAME + ".menu"
MENU_OBJECT_PATH = OBJECT_PATH + "/menu"
bus = None
class Script(dbus.service.Object):
def __init__(self, aList, session, object_path):
dbus.service.Object.__init__(self, session, object_path)
self._list = aList
self._session = session
def run(self):
self._loop = GObject.MainLoop()
self._loop.run()
@dbus.service.method(dbus_interface=INTERFACE_NAME,
in_signature='', out_signature='',
sender_keyword='sender')
def publishMenu(self, sender=None):
self._list.start()
@dbus.service.method(dbus_interface=INTERFACE_NAME,
in_signature='', out_signature='',
sender_keyword='sender')
def unpublishMenu(self, sender=None):
self._list.stop()
@dbus.service.method(dbus_interface=INTERFACE_NAME,
in_signature='', out_signature='',
sender_keyword='sender')
def quit(self, sender=None):
self.unpublishMenu();
self._loop.quit()
@dbus.service.method(dbus_interface=INTERFACE_NAME,
in_signature='i', out_signature='',
sender_keyword='sender')
def walk(self, steps, sender=None):
if steps == -1 or steps > self._list.size():
steps = self._list.size()
while(steps > 0):
self._list.walk()
steps -= 1
@dbus.service.method(dbus_interface=INTERFACE_NAME,
in_signature='', out_signature='s')
def popActivatedAction(self):
return self._list._activatedActions.pop(0)
@staticmethod
def create(aList):
global bus
GObject.threads_init()
glib.threads_init()
dbus_loop = DBusGMainLoop()
bus = dbus.SessionBus(mainloop=dbus_loop)
bus_name = dbus.service.BusName(SERVICE_NAME, bus=bus)
return Script(aList, bus_name, OBJECT_PATH)
class Action(object):
def __init__(self, aList, action, **kwargs):
self._list = aList
self._action = action
self._kargs = kwargs
def setProperties(self, menu, props):
if props:
for key in props:
menu.set_attribute_value(key, props[key])
def appendItem(self):
parentId = self._kargs['parentId']
if parentId and len(parentId):
parent = self._list.getMenu(parentId)[0]
else:
parent = self._list._root
if self._kargs['link'] == None:
item = Gio.MenuItem.new(self._kargs['label'], self._kargs['actionName'])
self.setProperties(item, self._kargs['properties'])
parent.append_item(item)
# Action
act = Gio.SimpleAction.new(self._kargs['actionName'], None)
act.connect('activate', self._list._onActionActivated)
self._list._rootAction.insert(act)
elif self._kargs['link'] == 'section':
section = Gio.Menu()
parent.append_section(self._kargs['label'], section)
elif self._kargs['link'] == 'submenu':
submenu = Gio.Menu()
parent.append_submenu(self._kargs['label'], submenu)
def removeItem(self):
menuId = self._kargs['menuId']
(menu, mId) = self._list.getMenu(menuId)
if mId != -1:
menu.remove(mId)
if self._kargs['actionName']:
# Remove action
self._list._rootAction.remove(self._kargs['actionName'])
else:
print("Remove menu item")
def run(self):
if self._action == 'append':
self.appendItem()
elif self._action == 'remove':
self.removeItem()
class ActionList(object):
def __init__(self, objectPath):
self._actions = []
self._actions_bk = []
self._objectPath = objectPath
self._bus = None
self._exportMenuID = None
self._exportActionID = None
self._ownNameID = None
self._root = None
self._rootAction = None
self._activatedActions = []
def appendItem(self, label, actionName, link=None, parentId=None, properties=None):
self._actions.append(Action(self, 'append',
parentId=parentId,
label=label,
actionName=actionName,
link=link,
properties=properties))
def removeItem(self, menuId, actionName=None):
self._actions.append(Action(self, 'remove',
menuId=menuId,
actionName=actionName))
def _save(self):
self._actions_bk = []
self._actions_bk.extend(self._actions)
def _restore(self):
if len(self._actions_bk):
self._actions = []
self._actions.extend(self._actions_bk)
def _findMenu(self, root, ids):
if len(ids) == 0:
return (root, -1)
currentId = int(ids[0])
link = root.get_item_link(currentId, 'section')
if link == None:
link = root.get_item_link(currentId, 'submenu')
if link:
return self._findMenu(link, ids[1:])
else:
return (root, currentId)
def getMenu(self, menuId):
return self._findMenu(self._root, str(menuId).split('.'));
def walk(self):
item = self._actions.pop(0)
item.run()
def size(self):
return len(self._actions)
def _exportService(self, connection, name):
self._root = Gio.Menu()
self._rootAction = Gio.SimpleActionGroup()
self._bus = connection
self._exportMenuID = connection.export_menu_model(MENU_OBJECT_PATH, self._root)
self._exportActionID = connection.export_action_group(MENU_OBJECT_PATH, self._rootAction)
def start(self):
self._save()
self._ownNameID = Gio.bus_own_name(2, MENU_SERVICE_NAME, 0, self._exportService, None, None)
def stop(self):
if self._exportMenuID:
self._bus.unexport_menu_model(self._exportMenuID)
self._exportMenuID = None
if self._exportActionID:
self._bus.unexport_action_group(self._exportActionID)
self._exportActionID = None
if self._ownNameID:
Gio.bus_unown_name(self._ownNameID)
self._ownNameID = None
self._root = None
self._rootAction = None
self._restore()
def _onActionActivated(self, action, parameter):
self._activatedActions.append(action.get_name())
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