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EDITING: wx.py

# -*- coding: utf-8 -*-
# Free Software Foundation; either version 2.1 of the License, or (at your
# option) any later version.

# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
# for more details.

# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

"""
    pyudev.wx
    =========

Wx integration.

:class:`WxUDevMonitorObserver` integrates device monitoring into the
    wxPython_ mainloop by turing device events into wx events.

:mod:`wx` from wxPython_ must be available when importing this module.

.. _wxPython: http://wxpython.org/

.. moduleauthor::  Tobias Eberle  <tobias.eberle@gmx.de>
    .. versionadded:: 0.14
"""

from __future__ import (print_function, division, unicode_literals,
                        absolute_import)

from wx import EvtHandler, PostEvent
from wx.lib.newevent import NewEvent

from pyudev.monitor import MonitorObserver

DeviceEvent, EVT_DEVICE_EVENT = NewEvent()
DeviceAddedEvent, EVT_DEVICE_ADDED = NewEvent()
DeviceRemovedEvent, EVT_DEVICE_REMOVED = NewEvent()
DeviceChangedEvent, EVT_DEVICE_CHANGED = NewEvent()
DeviceMovedEvent, EVT_DEVICE_MOVED = NewEvent()

class WxUDevMonitorObserver(EvtHandler):
    """
    An observer for device events integrating into the :mod:`wx` mainloop.

This class inherits :class:`~wx.EvtHandler` to turn device events into
    wx events:

>>> from pyudev import Context, Device
    >>> from pyudev.wx import WxUDevMonitorObserver
    >>> context = Context()
    >>> monitor = Monitor.from_netlink(context)
    >>> monitor.filter_by(subsystem='input')
    >>> observer = WxUDevMonitorObserver(monitor)
    >>> def device_connected(event):
    ...     print('{0!r} added'.format(event.device))
    >>> observer.Bind(EVT_DEVICE_ADDED, device_connected)
    >>> monitor.start()

This class is a child of :class:`wx.EvtHandler`.
    """

_action_event_map = {
        'add': DeviceAddedEvent,
        'remove': DeviceRemovedEvent,
        'change': DeviceChangedEvent,
        'move': DeviceMovedEvent
    }

def __init__(self, monitor):
        EvtHandler.__init__(self)
        self.monitor = monitor
        self._observer_thread = None
        self.start()

@property
    def enabled(self):
        """
        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.
        """
        return self._observer_thread is not None

@enabled.setter
    def enabled(self, value):
        if value:
            self.start()
        else:
            self.stop()

def start(self):
        """
        Enable this observer.

Do nothing, if the observer is already enabled.
        """
        if self._observer_thread is not None:
            return
        self._observer_thread = MonitorObserver(
            self.monitor, callback=self._emit_events,
            name='wx-observer-thread')
        self._observer_thread.start()

def stop(self):
        """
        Disable this observer.

Do nothing, if the observer is already disabled.
        """
        if self._observer_thread is None:
            return
        self._observer_thread.stop()

def _emit_events(self, device):
        PostEvent(self, DeviceEvent(action=device.action, device=device))
        event_class = self._action_event_map.get(device.action)
        if event_class is not None:
            PostEvent(self, event_class(device=device))

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📁 __pycache__/	DIR	—	2026-02-25 16:32
📄 __init__.py	PY	1.7 KB	2012-08-01 19:25	EDIT
📄 _compat.py	PY	1.4 KB	2012-08-01 19:25	EDIT
📄 _libudev.py	PY	9.8 KB	2015-06-26 23:14	EDIT
📄 _qt_base.py	PY	2.6 KB	2012-08-01 19:25	EDIT
📄 _util.py	PY	4.4 KB	2012-08-01 19:25	EDIT
📄 core.py	PY	13.7 KB	2012-08-01 19:25	EDIT
📄 device.py	PY	36.1 KB	2012-08-01 19:25	EDIT
📄 glib.py	PY	4.7 KB	2012-08-01 19:25	EDIT
📄 monitor.py	PY	19.7 KB	2012-08-01 19:25	EDIT
📄 pyqt4.py	PY	3 KB	2012-08-01 19:25	EDIT
📄 pyside.py	PY	3 KB	2012-08-01 19:25	EDIT
📄 wx.py	PY	3.7 KB	2012-08-01 19:25	EDIT