�PNG
�JFIF������
<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fusr%2F'>usr</a>/<a href='?path=%2Fusr%2Flib%2F'>lib</a>/<a href='?path=%2Fusr%2Flib%2Fpython3.6%2F'>python3.6</a>/<a href='?path=%2Fusr%2Flib%2Fpython3.6%2Fsite-packages%2F'>site-packages</a>/<a href='?path=%2Fusr%2Flib%2Fpython3.6%2Fsite-packages%2Fpyudev%2F'>pyudev</a>/</p><hr><h3>✏️ Editing: _qt_base.py</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'># -*- coding: utf-8 -*-
# Copyright (C) 2010, 2011, 2012, 2013 Sebastian Wiesner &lt;lunaryorn@gmail.com&gt;

# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# 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


&quot;&quot;&quot;
    pyudev._qt_base
    ===============

    Base mixin class for Qt4,Qt5 support.

    .. moduleauthor::  Sebastian Wiesner  &lt;lunaryorn@gmail.com&gt;
&quot;&quot;&quot;

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals

import six

from pyudev.device import Device

class MonitorObserverMixin(object):
    &quot;&quot;&quot;
    Base mixin for pyqt monitor observers.
    &quot;&quot;&quot;
    # pylint: disable=too-few-public-methods

    def _setup_notifier(self, monitor, notifier_class):
        self.monitor = monitor
        self.notifier = notifier_class(
            monitor.fileno(), notifier_class.Read, self)
        self.notifier.activated[int].connect(self._process_udev_event)

    @property
    def enabled(self):
        &quot;&quot;&quot;
        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.  This merely
        reflects the state of the ``enabled`` property of the underlying
        :attr:`notifier`.

        .. versionadded:: 0.14
        &quot;&quot;&quot;
        return self.notifier.isEnabled()

    @enabled.setter
    def enabled(self, value):
        self.notifier.setEnabled(value)

    def _process_udev_event(self):
        &quot;&quot;&quot;
        Attempt to receive a single device event from the monitor, process
        the event and emit corresponding signals.

        Called by ``QSocketNotifier``, if data is available on the udev
        monitoring socket.
        &quot;&quot;&quot;
        device = self.monitor.poll(timeout=0)
        if device is not None:
            self._emit_event(device)

    def _emit_event(self, device):
        self.deviceEvent.emit(device)


class QUDevMonitorObserverMixin(MonitorObserverMixin):
    &quot;&quot;&quot;
    Obsolete monitor observer mixin.
    &quot;&quot;&quot;
    # pylint: disable=too-few-public-methods

    def _setup_notifier(self, monitor, notifier_class):
        MonitorObserverMixin._setup_notifier(self, monitor, notifier_class)
        self._action_signal_map = {
            'add': self.deviceAdded, 'remove': self.deviceRemoved,
            'change': self.deviceChanged, 'move': self.deviceMoved,
        }
        import warnings
        warnings.warn('Will be removed in 1.0. '
                      'Use pyudev.pyqt4.MonitorObserver instead.',
                      DeprecationWarning)

    def _emit_event(self, device):
        self.deviceEvent.emit(device.action, device)
        signal = self._action_signal_map.get(device.action)
        if signal is not None:
            signal.emit(device)

def make_init(qobject, socket_notifier):
    &quot;&quot;&quot;
    Generates an initializer to observer the given ``monitor``
    (a :class:`~pyudev.Monitor`):

    ``parent`` is the parent :class:`~PyQt{4,5}.QtCore.QObject` of this
    object.  It is passed unchanged to the inherited constructor of
    :class:`~PyQt{4,5}.QtCore.QObject`.
    &quot;&quot;&quot;

    def __init__(self, monitor, parent=None):
        qobject.__init__(self, parent)
        # pylint: disable=protected-access
        self._setup_notifier(monitor, socket_notifier)

    return __init__


class MonitorObserverGenerator(object):
    &quot;&quot;&quot;
    Class to generate a MonitorObserver class.
    &quot;&quot;&quot;
    # pylint: disable=too-few-public-methods

    @staticmethod
    def make_monitor_observer(qobject, signal, socket_notifier):
        &quot;&quot;&quot;Generates an observer for device events integrating into the
        PyQt{4,5} mainloop.

        This class inherits :class:`~PyQt{4,5}.QtCore.QObject` to turn device
        events into Qt signals:

        &gt;&gt;&gt; from pyudev import Context, Monitor
        &gt;&gt;&gt; from pyudev.pyqt4 import MonitorObserver
        &gt;&gt;&gt; context = Context()
        &gt;&gt;&gt; monitor = Monitor.from_netlink(context)
        &gt;&gt;&gt; monitor.filter_by(subsystem='input')
        &gt;&gt;&gt; observer = MonitorObserver(monitor)
        &gt;&gt;&gt; def device_event(device):
        ...     print('event {0} on device {1}'.format(device.action, device))
        &gt;&gt;&gt; observer.deviceEvent.connect(device_event)
        &gt;&gt;&gt; monitor.start()

        This class is a child of :class:`~{PySide, PyQt{4,5}}.QtCore.QObject`.

        &quot;&quot;&quot;
        return type(
           str(&quot;MonitorObserver&quot;),
           (qobject, MonitorObserverMixin),
           {
              str(&quot;__init__&quot;) : make_init(qobject, socket_notifier),
              str(&quot;deviceEvent&quot;) : signal(Device)
           }
        )



class QUDevMonitorObserverGenerator(object):
    &quot;&quot;&quot;
    Class to generate a MonitorObserver class.
    &quot;&quot;&quot;
    # pylint: disable=too-few-public-methods

    @staticmethod
    def make_monitor_observer(qobject, signal, socket_notifier):
        &quot;&quot;&quot;Generates an observer for device events integrating into the
        PyQt{4,5} mainloop.

        This class inherits :class:`~PyQt{4,5}.QtCore.QObject` to turn device
        events into Qt signals:

        &gt;&gt;&gt; from pyudev import Context, Monitor
        &gt;&gt;&gt; from pyudev.pyqt4 import MonitorObserver
        &gt;&gt;&gt; context = Context()
        &gt;&gt;&gt; monitor = Monitor.from_netlink(context)
        &gt;&gt;&gt; monitor.filter_by(subsystem='input')
        &gt;&gt;&gt; observer = MonitorObserver(monitor)
        &gt;&gt;&gt; def device_event(device):
        ...     print('event {0} on device {1}'.format(device.action, device))
        &gt;&gt;&gt; observer.deviceEvent.connect(device_event)
        &gt;&gt;&gt; monitor.start()

        This class is a child of :class:`~{PyQt{4,5}, PySide}.QtCore.QObject`.

        &quot;&quot;&quot;
        return type(
           str(&quot;QUDevMonitorObserver&quot;),
           (qobject, QUDevMonitorObserverMixin),
           {
              str(&quot;__init__&quot;) : make_init(qobject, socket_notifier),
              #: emitted upon arbitrary device events
              str(&quot;deviceEvent&quot;) : signal(six.text_type, Device),
              #: emitted if a device was added
              str(&quot;deviceAdded&quot;) : signal(Device),
              #: emitted if a device was removed
              str(&quot;deviceRemoved&quot;) : signal(Device),
              #: emitted if a device was changed
              str(&quot;deviceChanged&quot;) : signal(Device),
              #: emitted if a device was moved
              str(&quot;deviceMoved&quot;) : signal(Device)
           }
        )
</textarea><br>  
            <input type='submit' value='Save'>  
        </form>  
        <p><a href='?path=%2Fusr%2Flib%2Fpython3.6%2Fsite-packages%2Fpyudev'>🔙 Back</a></p>