app: Sent notifications via config subscriptions

src/global_state.py

@@ -17,8 +17,5 @@ class GlobalState:
     def navigate_to_page(self, *args):
         self._uninitialized()
 
-    def send_notification(self, *args):
-        self._uninitialized()
-
 
 global_state = GlobalState()

src/main.py

@@ -40,7 +40,8 @@ class Application(Adw.Application):
                              GLib.OptionArg.NONE, "Run in testing mode. Does not alter the system, but runs scripts.", None)
 
         config.set('version', version)
-        global_state.send_notification = self._send_notification
+        config.set('send_notification', None)
+        config.subscribe('send_notification', self._send_notification)
 
     def _setup_icons(self):
         icon_theme = Gtk.IconTheme.get_for_display(self.window.get_display())
@@ -85,10 +86,11 @@ class Application(Adw.Application):
         self.window.close()
         return True
 
-    def _send_notification(self, title, text):
+    def _send_notification(self, title):
+        if not title:
+            return
         n = Gio.Notification()
         n.set_title(title)
-        n.set_body(text)
         self.send_notification(APP_ID, n)
 
 

src/util/installation_scripting.py

@@ -42,7 +42,7 @@ class InstallationScripting():
         config.set('installation_running', False)
         global_state.navigate_to_page("failed")
         # Translators: Notification text
-        global_state.send_notification(_("Installation Failed"), '')
+        config.set('send_notification', _("Finished Installation"))
 
     def _try_start_next_script(self):
         if self.running_step != InstallationStep.none:
@@ -92,7 +92,7 @@ class InstallationScripting():
             if self.finished_step is InstallationStep.configure:
                 config.set('installation_running', False)
                 # Translators: Notification text
-                global_state.send_notification(_("Finished Installation"), '')
+                config.set('send_notification', _("Finished Installation"))
                 global_state.advance(None)
             else:
                 self._try_start_next_script()