Add src/sugar/presence/util.py

src/sugar/presence/util.py

@@ -0,0 +1,53 @@
+import logging
+
+import dbus
+from dbus import PROPERTIES_IFACE
+from telepathy.interfaces import ACCOUNT, \
+                                 ACCOUNT_MANAGER
+
+ACCOUNT_MANAGER_SERVICE = 'org.freedesktop.Telepathy.AccountManager'
+ACCOUNT_MANAGER_PATH = '/org/freedesktop/Telepathy/AccountManager'
+
+class ConnectionManager(object):
+    def __init__(self):
+        self.connections_per_account = []
+
+        bus = dbus.SessionBus()
+        obj = bus.get_object(ACCOUNT_MANAGER_SERVICE, ACCOUNT_MANAGER_PATH)
+        account_manager = dbus.Interface(obj, ACCOUNT_MANAGER)
+
+        logging.info('KILL_PS listen for accounts coming and going')
+        #account_manager.connect_to_signal('AccountValidityChanged',
+        #    self.__account_validity_changed_cb)
+
+        account_paths = account_manager.Get(ACCOUNT_MANAGER, 'ValidAccounts',
+                                            dbus_interface=PROPERTIES_IFACE)
+        for account_path in account_paths:
+            obj = bus.get_object(ACCOUNT_MANAGER_SERVICE, account_path)
+            #obj.connect_to_signal('AccountPropertyChanged',
+            #                      self.__account_property_changed_cb)
+            connection_path = obj.Get(ACCOUNT, 'Connection')
+            if connection_path == '/':
+                continue
+
+            connection_name = connection_path.replace('/', '.')[1:]
+            connection = bus.get_object(connection_name, connection_path)
+            self.connections[account_path] = connection
+
+    def get_preferred_connection(self):
+        best_connection = None, None
+        for account_path, connection in self.connections.items():
+            if 'salut' in connection.object_path:
+                best_connection = account_path, connection
+            elif 'gabble' in connection.object_path:
+                best_connection = account_path, connection
+                break
+        return best_connection
+
+_connection_manager = None
+
+def get_connection_manager():
+    global _connection_manager
+    if not _connection_manager:
+        _connection_manager = ConnectionManager()
+    return _connection_manager