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"""
SimpleGladeApp.py
Module that provides an object oriented abstraction to pygtk and libglade.
Copyright (C) 2004 Sandino Flores Moreno
Copyright (C) 2009 Stephan Peijnik
"""
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
import os
import sys
import re
import threading
import logging
import gtk
import gobject
LOG = logging.getLogger('UpdateManager.Frontend.GtkCommon.SimpleGtkbuilderApp')
# based on SimpleGladeApp
class SimpleGtkbuilderApp(object):
def __init__(self, path):
self.builder = gtk.Builder()
self.builder.add_from_file(path)
self.builder.connect_signals(self)
self._exit_event = threading.Event()
self._running_event = threading.Event()
for o in self.builder.get_objects():
if isinstance(o, gtk.Buildable):
setattr(self, gtk.Buildable.get_name(o), o)
else:
setattr(self, o.get_name(), o)
def set_exit(self):
self._exit_event.set()
def is_exit_pending(self):
return self._exit_event.isSet() and self._running_event.isSet()
def is_running(self):
return self._running_event.isSet()
def run(self):
"""
Starts the main loop of processing events checking for Control-C.
The default implementation checks wheter a Control-C is pressed,
then calls on_keyboard_interrupt().
Use this method for starting programs.
"""
try:
self._running_event.set()
while not self._exit_event.isSet():
while gtk.events_pending():
gtk.main_iteration()
# Intelligent waiting:
# We put this thread to sleep if there are no gtk events
# pending.
#
# gtk.main_iteration() will now block until the timeout
# is detected.
if not gtk.events_pending():
def timeout_func():
pass
gobject.timeout_add(200, timeout_func)
gtk.main_iteration()
LOG.debug("Exit event received.")
self._exit_event.clear()
self._running_event.clear()
except KeyboardInterrupt:
LOG.debug("KeyboardInterrupt received.")
self._exit_event.clear()
self._running_event.clear()
self.on_keyboard_interrupt()
except:
# We need to mark the main loop as exited first and then raise
# the exception again.
LOG.debug("Exception inside main loop.")
self._exit_event.clear()
self._running_event.clear()
raise
def on_keyboard_interrupt(self):
"""
This method is called by the default implementation of run()
after a program is finished by pressing Control-C.
"""
pass
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