More plugin state cleanups

openlp/core/app.py

@@ -118,6 +118,7 @@ class OpenLP(QtWidgets.QApplication):
         loader()
         self.main_window = MainWindow()
         Registry().execute('bootstrap_initialise')
+        State().flush_preconditions()
         Registry().execute('bootstrap_post_set_up')
         State().flush_preconditions()
         Registry().initialise = False
@@ -136,7 +137,7 @@ class OpenLP(QtWidgets.QApplication):
         if Settings().value('core/update check'):
             check_for_update(self.main_window)
         self.main_window.is_display_blank()
-        self.main_window.app_startup()
+        Registry().execute('bootstrap_completion')
         return self.exec()
 
     @staticmethod

openlp/core/common/registry.py

@@ -204,6 +204,7 @@ class RegistryBase(object):
         Registry().register(de_hump(self.__class__.__name__), self)
         Registry().register_function('bootstrap_initialise', self.bootstrap_initialise)
         Registry().register_function('bootstrap_post_set_up', self.bootstrap_post_set_up)
+        Registry().register_function('bootstrap_completion', self.bootstrap_completion)
 
     def bootstrap_initialise(self):
         """
@@ -216,3 +217,9 @@ class RegistryBase(object):
         Dummy method to be overridden
         """
         pass
+
+    def bootstrap_completion(self):
+        """
+        Dummy method to be overridden
+        """
+        pass

openlp/core/lib/plugin.py

@@ -323,6 +323,9 @@ class Plugin(RegistryBase, RegistryProperties):
         """
         return self.text_strings[name]
 
+    def set_plugin_text_strings(self):
+        pass
+
     def set_plugin_ui_text_strings(self, tooltips):
         """
         Called to define all translatable texts of the plugin

openlp/core/lib/pluginmanager.py

@@ -55,6 +55,11 @@ class PluginManager(RegistryBase, LogMixin, RegistryProperties):
         # hook methods have to happen after find_plugins. Find plugins needs
         # the controllers hence the hooks have moved from setupUI() to here
         # Find and insert settings tabs
+
+    def bootstrap_post_set_up(self):
+        """
+        Bootstrap all the plugin manager functions
+        """
         self.hook_settings_tabs()
         # Find and insert media manager items
         self.hook_media_manager()
@@ -67,6 +72,16 @@ class PluginManager(RegistryBase, LogMixin, RegistryProperties):
         # Call the initialise method to setup plugins.
         self.initialise_plugins()
 
+    def bootstrap_completion(self):
+        """
+        Give all the plugins a chance to perform some tasks at startup
+        """
+        self.application.process_events()
+        for plugin in self.plugins:
+            if plugin.is_active():
+                plugin.app_startup()
+                self.application.process_events()
+
     def find_plugins(self):
         """
         Scan a directory for objects inheriting from the ``Plugin`` class.

openlp/core/ui/mainwindow.py

@@ -657,16 +657,6 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow, LogMixin, RegistryPropert
             self.set_view_mode(False, True, False, False, True, True)
             self.mode_live_item.setChecked(True)
 
-    def app_startup(self):
-        """
-        Give all the plugins a chance to perform some tasks at startup
-        """
-        self.application.process_events()
-        for plugin in self.plugin_manager.plugins:
-            if plugin.is_active():
-                plugin.app_startup()
-                self.application.process_events()
-
     def first_time(self):
         """
         Import themes if first time