Source Code for Module conduit.dataproviders.HalFactory

 1  import gobject 
 2  import dbus 
 3   
 4  import conduit.utils as Utils 
 5  import conduit.dataproviders.SimpleFactory as SimpleFactory 
 6   
 7 -class HalFactory(SimpleFactory.SimpleFactory): 
 8   
 9 -    def __init__(self, **kwargs): 
10          SimpleFactory.SimpleFactory.__init__(self, **kwargs) 
11   
12          # Connect to system HAL 
13          self.bus = dbus.SystemBus() 
14          self.hal_obj = self.bus.get_object("org.freedesktop.Hal", "/org/freedesktop/Hal/Manager") 
15          self.hal = dbus.Interface(self.hal_obj, "org.freedesktop.Hal.Manager") 
16   
17          # Hookup signals 
18          self.hal.connect_to_signal("DeviceAdded", self._device_added) 
19          self.hal.connect_to_signal("DeviceRemoved", self._device_removed) 
20          self.hal.connect_to_signal("NewCapability", self._new_capability) 
21   
22 -    def _device_added(self, device_udi, *args): 
23          props = self._get_properties(device_udi) 
24          if self.is_interesting(device_udi, props): 
25              self.item_added(device_udi, **props) 
26   
27 -    def _new_capability(self, device_udi, *args): 
28          if not device_udi in self.items.keys(): 
29              props = self._get_properties(device_udi) 
30              if self.is_interesting(device_udi, props): 
31                  self.item_added(device_udi, **props) 
32   
33 -    def _device_removed(self, device_udi): 
34          self.item_removed(device_udi) 
35   
36 -    def _get_properties(self, device): 
37          try: 
38              device_dbus_obj = self.bus.get_object("org.freedesktop.Hal" ,device) 
39              buffer = {} 
40              for x, y in device_dbus_obj.GetAllProperties(dbus_interface="org.freedesktop.Hal.Device").items(): 
41                  buffer[str(x)] = str(y) 
42              return buffer 
43          except: 
44              return {} 
45   
46 -    def probe(self): 
47          """ Enumerate HAL for any entries of interest """ 
48          devices = self.hal.GetAllDevices() 
49          for device in self.hal.GetAllDevices(): 
50              device = str(device) 
51              props = self._get_properties(device) 
52              if self.is_interesting(device, props): 
53                   self.item_added(device, **props) 
54   
55 -    def get_args(self, udi, **kwargs): 
56          return (udi,) 
57