Coverage for modules/org/openteacher/interfaces/qt/qtApp/qtApp : 83%

#! /usr/bin/env python3 

# -*- coding: utf-8 -*- 

#       Copyright 2012, 2017, Marten de Vries 

# 

#       This file is part of OpenTeacher. 

# 

#       OpenTeacher 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. 

# 

#       OpenTeacher 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 OpenTeacher.  If not, see <http://www.gnu.org/licenses/>. 

import contextlib 

class QtAppModule: 

        """When this module is enabled, there is guaranteed to be a 

           QApplication instance. It **doesn't** guarantee that that 

           QApplication did initialize the GUI, though. 

        """ 

        def __init__(self, moduleManager, *args, **kwargs): 

                super().__init__(*args, **kwargs) 

                self._mm = moduleManager 

                self.type = "qtApp" 

                self.uses = ( 

                        self._mm.mods(type="ui"), 

                ) 

        def enable(self): 

                try: 

                        from PyQt5 import QtCore 

                except ImportError: 

                        return 

46                if not QtCore.QCoreApplication.instance(): 

                        #not handled by the ui module. That means that we need a 

                        #non-gui qapplication 

                        self._app = QtCore.QCoreApplication([]) 

                self.active = True 

        def disable(self): 

                self.active = False 

                with contextlib.suppress(AttributeError): 

                        del self._app 

def init(moduleManager): 

        return QtAppModule(moduleManager)