sugar-toolkit-gtk3/shell/model/devices/devicesmodel.py

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import gobject
from model.devices import device
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from model.devices.network import wired
from model.devices.network import wireless
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from model.devices.network import mesh
from model.devices import battery
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from hardware import hardwaremanager
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from hardware import nmclient
class DevicesModel(gobject.GObject):
__gsignals__ = {
'device-appeared' : (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'device-disappeared': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT]))
}
def __init__(self):
gobject.GObject.__init__(self)
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self._devices = {}
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self.add_device(battery.Device())
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self._observe_network_manager()
def _observe_network_manager(self):
network_manager = hardwaremanager.get_network_manager()
if not network_manager:
return
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for device in network_manager.get_devices():
self._check_network_device(device)
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network_manager.connect('device-activated',
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self._network_device_activated_cb)
network_manager.connect('device-removed',
self._network_device_removed_cb)
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def _network_device_activated_cb(self, network_manager, nm_device):
self._check_network_device(nm_device)
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def _network_device_removed_cb(self, nm_device):
self._remove_network_device(nm_device)
def _network_device_state_changed_cb(self, nm_device):
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if nm_device.get_state() == nmclient.DEVICE_STATE_INACTIVE:
self._remove_network_device(nm_device)
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def _check_network_device(self, nm_device):
if not nm_device.is_valid():
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return
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dtype = nm_device.get_type()
if dtype == nmclient.DEVICE_TYPE_802_11_WIRELESS \
or dtype == nmclient.DEVICE_TYPE_802_11_MESH_OLPC:
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self._add_network_device(nm_device)
def _get_network_device(self, nm_device):
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return self._devices[str(nm_device.get_op())]
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def _add_network_device(self, nm_device):
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dtype = nm_device.get_type()
if dtype == nmclient.DEVICE_TYPE_802_11_WIRELESS:
self.add_device(wireless.Device(nm_device))
if dtype == nmclient.DEVICE_TYPE_802_11_MESH_OLPC:
self.add_device(mesh.Device(nm_device))
nm_device.connect('state-changed',
self._network_device_state_changed_cb)
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def _remove_network_device(self, nm_device):
self.remove_device(self._get_network_device(nm_device))
def __iter__(self):
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return iter(self._devices.values())
def add_device(self, device):
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self._devices[device.get_id()] = device
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import logging
logging.debug("adding device %s" % device.get_id())
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self.emit('device-appeared', device)
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def remove_device(self, device):
self.emit('device-disappeared', self._devices[device.get_id()])
del self._devices[device.get_id()]