Separate app.py and frontend_app.py logics.

This prepares the scenario to run the frontend and the backend in
different processes.

1 files changed, 103 insertions, 0 deletions

diff --git a/src/leap/bitmask/frontend_app.py b/src/leap/bitmask/frontend_app.py
index e69de29b..ed67a77a 100644
--- a/src/leap/bitmask/frontend_app.py
+++ b/src/leap/bitmask/frontend_app.py
@@ -0,0 +1,103 @@
+# -*- coding: utf-8 -*-
+# frontend_app.py
+# Copyright (C) 2013, 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+import signal
+import sys
+import os
+
+from functools import partial
+
+from PySide import QtCore, QtGui
+
+from leap.bitmask.config import flags
+from leap.bitmask.gui import locale_rc  # noqa - silence pylint
+from leap.bitmask.gui.mainwindow import MainWindow
+# from leap.bitmask.logs.utils import create_logger
+
+import logging
+logger = logging.getLogger(__name__)
+
+
+def sigint_handler(*args, **kwargs):
+    """
+    Signal handler for SIGINT
+    """
+    logger = kwargs.get('logger', None)
+    if logger:
+        logger.debug("SIGINT catched. shutting down...")
+    mainwindow = args[0]
+    mainwindow.quit()
+
+
+def sigterm_handler(*args, **kwargs):
+    """
+    Signal handler for SIGTERM.
+    This handler is actually passed to twisted reactor
+    """
+    logger = kwargs.get('logger', None)
+    if logger:
+        logger.debug("SIGTERM catched. shutting down...")
+    mainwindow = args[0]
+    mainwindow.quit()
+
+
+def run_frontend(options):
+    """
+    Run the GUI for the application.
+
+    :param options: a dict of options parsed from the command line.
+    :type options: dict
+    """
+    bypass_checks = options["bypass_checks"]
+    start_hidden = options["start_hidden"]
+
+    # We force the style if on KDE so that it doesn't load all the kde
+    # libs, which causes a compatibility issue in some systems.
+    # For more info, see issue #3194
+    if flags.STANDALONE and os.environ.get("KDE_SESSION_UID") is not None:
+        sys.argv.append("-style")
+        sys.argv.append("Cleanlooks")
+
+    qApp = QtGui.QApplication(sys.argv)
+
+    # To test:
+    # $ LANG=es ./app.py
+    locale = QtCore.QLocale.system().name()
+    qtTranslator = QtCore.QTranslator()
+    if qtTranslator.load("qt_%s" % locale, ":/translations"):
+        qApp.installTranslator(qtTranslator)
+    appTranslator = QtCore.QTranslator()
+    if appTranslator.load("%s.qm" % locale[:2], ":/translations"):
+        qApp.installTranslator(appTranslator)
+
+    # Needed for initializing qsettings it will write
+    # .config/leap/leap.conf top level app settings in a platform
+    # independent way
+    qApp.setOrganizationName("leap")
+    qApp.setApplicationName("leap")
+    qApp.setOrganizationDomain("leap.se")
+
+    window = MainWindow(bypass_checks=bypass_checks,
+                        start_hidden=start_hidden)
+
+    sigint_window = partial(sigint_handler, window, logger=logger)
+    signal.signal(signal.SIGINT, sigint_window)
+
+    sys.exit(qApp.exec_())
+
+
+if __name__ == '__main__':
+    run_frontend()