pyudev.glib – Glib/Gtk 2 integration

Glib integration.

GUDevMonitorObserver integrates device monitoring into the Glib mainloop by turing device events into Glib signals.

glib and gobject from PyGObject must be available when importing this module. PyGtk is not required.

New in version 0.7.

class pyudev.glib.GUDevMonitorObserver(monitor)

An observer for device events integrating into the glib mainloop.

This class inherits GObject to turn device events into glib signals.

>>> from pyudev import Context, Monitor
>>> from pyudev.glib import GUDevMonitorObserver
>>> context = Context()
>>> monitor = Monitor.from_netlink(context)
>>> monitor.filter_by(subsystem='input')
>>> observer = GUDevMonitorObserver(monitor)
>>> def device_connected(observer, device):
...     print('{0!r} added'.format(device))
>>> observer.connect('device-added', device_connected)
>>> monitor.start()

This class is a child of gobject.GObject.

monitor

The Monitor observed by this object.

event_source

The event source, which represents the watch on the monitor (as returned by glib.io_add_watch()), or None, if enabled is False.

enabled

Whether this observer is enabled or not.

If True (the default), this observer is enabled, and emits events. Otherwise it is disabled and does not emit any events.

New in version 0.14.

Signals

This class defines the following GObject signals:

device-event(observer, action, device)

Emitted upon any device event. observer is the GUDevMonitorObserver, which emitted the signal. action is a unicode string containing the action name, and device is the Device, which caused this event.

Basically the last two arguments of this signal are simply the return value of receive_device()

device-added(observer, device)

Emitted if a Device is added (e.g a USB device was plugged).

device-removed(observer, device)

Emitted if a Device is removed (e.g. a USB device was unplugged).

device-changed(observer, device)

Emitted if a Device was somehow changed (e.g. a change of a property)

device-moved(observer, device)

Emitted if a Device was renamed, moved or re-parented.