disable mp code view menu when corresponding view does not have focus

python/gui_manager.py

@@ -383,8 +383,12 @@ class GUIManager(QObject):
         # Note: we create all menu items fresh because we do not have
         # hooks for updating built-in items such as "Copy".
         self.edit_menu.clear()
-        self.edit_menu.addMenu(self.mp_code_view_1.mp_code_view_menu())
-        self.edit_menu.addMenu(self.mp_code_view_2.mp_code_view_menu())
+        menu1 = self.mp_code_view_1.mp_code_view_menu()
+        menu1.setEnabled(self.mp_code_view_1.hasFocus())
+        self.edit_menu.addMenu(menu1)
+        menu2 = self.mp_code_view_2.mp_code_view_menu()
+        menu2.setEnabled(self.mp_code_view_2.hasFocus())
+        self.edit_menu.addMenu(menu2)
 
     def _fill_examples_menu(self):
         if os.path.exists(examples_paths["models"]):