#
# Representation of an event loop
#
# Copyright (C) 2020 Red Hat, Inc. All rights reserved.
#
# 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 Street, Fifth Floor, Boston, MA 02110-1301
# USA
#
from abc import ABCMeta, abstractmethod
import gi
gi.require_version("GLib", "2.0")
from gi.repository import GLib
__all__ = [
"AbstractEventLoop",
"EventLoop"
]
[docs]class AbstractEventLoop(metaclass=ABCMeta):
"""The abstract representation of the event loop.
It is necessary to run the event loop to handle emitted
DBus signals or incoming DBus calls (in the DBus service).
Example:
.. code-block:: python
# Create the event loop.
loop = EventLoop()
# Start the event loop.
loop.run()
# Run loop.quit() to stop.
"""
[docs] @abstractmethod
def run(self):
"""Start the event loop."""
pass
[docs] @abstractmethod
def quit(self):
"""Stop the event loop."""
pass
[docs]class EventLoop(AbstractEventLoop):
"""The representation of the event loop."""
def __init__(self):
"""Create the event loop."""
self._loop = GLib.MainLoop()
[docs] def run(self):
"""Start the event loop."""
self._loop.run()
[docs] def quit(self):
"""Stop the event loop."""
self._loop.quit()