add global method for setting title image

src/global_state.py

@@ -29,6 +29,9 @@ class GlobalState:
     def advance_without_return(self, page):
         print('Advance called before window initalization compeleted!')
 
+    def set_title_image(self, image_name):
+        print('Setting of title image called before window initalization compeleted!')
+
     def installation_failed(self):
         print('Installation failed before window initalization compeleted!')
 

src/ui/pages/internet.py

@@ -24,6 +24,7 @@ class InternetPage(Gtk.Box, Page):
 
     def _set_connected(self):
         self.image_name = 'network-wireless-symbolic'
+        global_state.set_title_image(self.image_name)
         start_system_timesync()
 
     ### callbacks ###

src/ui/window.py

@@ -60,6 +60,7 @@ class OsInstallerWindow(Adw.ApplicationWindow):
         # set advancing functions in global state
         global_state.advance = self.advance
         global_state.advance_without_return = self.advance_without_return
+        global_state.set_title_image = self._set_title_image
         global_state.installation_failed = self.show_failed_page
 
         # determine available pages
@@ -136,17 +137,17 @@ class OsInstallerWindow(Adw.ApplicationWindow):
         self.current_page = wrapper.get_page()
         if not self.current_page.load():
             self.main_stack.set_visible_child(wrapper)
-
-            # set icon
-            name = '1' if self.image_stack.get_visible_child_name() == '2' else '2'
-            new_image = self.image_stack.get_child_by_name(name)
-            new_image.set_from_icon_name(self.current_page.image_name)
-            self.image_stack.set_visible_child_name(name)
-
+            self._set_title_image(self.current_page.image_name)
             self._update_navigation_buttons()
         else:  # load next if load() returned True
             self._load_page(self.navigation_state.current + 1)
 
+    def _set_title_image(self, image_name):
+        name = '1' if self.image_stack.get_visible_child_name() == '2' else '2'
+        new_image = self.image_stack.get_child_by_name(name)
+        new_image.set_from_icon_name(image_name)
+        self.image_stack.set_visible_child_name(name)
+
     def _show_dialog(self, dialog):
         dialog.set_transient_for(self)
         dialog.set_modal(True)