attempt to fix bug 923496

Fixes: https://launchpad.net/bugs/923496

openlp/core/__init__.py

@@ -127,7 +127,7 @@ class OpenLP(QtGui.QApplication):
         # make sure Qt really display the splash screen
         self.processEvents()
         # start the main app window
-        self.mainWindow = MainWindow(self.clipboard(), self.args)
+        self.mainWindow = MainWindow(self)
         self.mainWindow.show()
         if show_splash:
             # now kill the splashscreen
@@ -146,6 +146,7 @@ class OpenLP(QtGui.QApplication):
         Receiver.send_message(u'live_display_blank_check')
         self.mainWindow.appStartup()
         # Skip exec_() for gui tests
+        self.eventLoopIsActive = True
         if not testing:
             return self.exec_()
 

openlp/core/ui/mainwindow.py

@@ -542,14 +542,15 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
     """
     log.info(u'MainWindow loaded')
 
-    def __init__(self, clipboard, arguments):
+    def __init__(self, parent):
         """
         This constructor sets up the interface, the various managers, and the
         plugins.
         """
         QtGui.QMainWindow.__init__(self)
-        self.clipboard = clipboard
-        self.arguments = arguments
+        self.parent = lambda: parent
+        self.clipboard = self.parent().clipboard()
+        self.arguments = self.parent().args
         # Set up settings sections for the main application
         # (not for use by plugins)
         self.uiSettingsSection = u'user interface'
@@ -830,7 +831,7 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
                     translate('OpenLP.MainWindow',
                         'OpenLP Main Display Blanked'),
                     translate('OpenLP.MainWindow',
-                         'The Main Display has been blanked out'))
+                        'The Main Display has been blanked out'))
 
     def onErrorMessage(self, data):
         Receiver.send_message(u'close_splash')
@@ -1132,6 +1133,11 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
         """
         Hook to close the main window and display windows on exit
         """
+        # The MainApplication did not even enter the event loop (this happens
+        # when OpenLP is not fully loaded). Just ignore the event.
+        if not hasattr(self.parent(), u'eventLoopIsActive'):
+            event.ignore()
+            return
         # If we just did a settings import, close without saving changes.
         if self.settingsImported:
             event.accept()
@@ -1184,7 +1190,9 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
         # Save settings
         self.saveSettings()
         # Close down the display
-        self.liveController.display.close()
+        if self.liveController.display:
+            self.liveController.display.close()
+            self.liveController.display = None
 
     def serviceChanged(self, reset=False, serviceName=None):
         """

openlp/core/ui/slidecontroller.py

@@ -73,6 +73,7 @@ class Controller(QtGui.QWidget):
         controller = self
         Receiver.send_message('%s' % sender, [controller, args])
 
+
 class SlideController(Controller):
     """
     SlideController is the slide controller widget. This widget is what the
@@ -577,8 +578,7 @@ class SlideController(Controller):
         # rebuild display as screen size changed
         if self.display:
             self.display.close()
-        self.display = MainDisplay(self, self.imageManager, self.isLive,
-            self)
+        self.display = MainDisplay(self, self.imageManager, self.isLive, self)
         self.display.setup()
         if self.isLive:
             self.__addActionsToWidget(self.display)

openlp/core/utils/__init__.py

@@ -34,7 +34,6 @@ import os
 import re
 from subprocess import Popen, PIPE
 import sys
-import time
 import urllib2
 
 from PyQt4 import QtGui, QtCore
@@ -69,7 +68,7 @@ class VersionThread(QtCore.QThread):
         """
         Run the thread.
         """
-        time.sleep(1)
+        self.sleep(1)
         app_version = get_application_version()
         version = check_latest_version(app_version)
         if LooseVersion(str(version)) > LooseVersion(str(app_version[u'full'])):