implement deltas to improve performance

vanilla_installer/defaults/conn_check.py

@@ -42,6 +42,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__key = key
         self.__step = step
         self.__step_num = step["num"]
+        self.delta = False
 
         self.__ignore_callback = False
 

vanilla_installer/defaults/disk.py

@@ -671,6 +671,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = False
         self.__registry_disks = []
         self.__selected_disks = []
         self.__disks = DisksManager()

vanilla_installer/defaults/encryption.py

@@ -37,6 +37,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = False
 
         self.btn_next.connect("clicked", self.__window.next)
         self.use_encryption_switch.connect(

vanilla_installer/defaults/image.py

@@ -31,6 +31,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = False
 
         self.btn_next.connect("clicked", self.__window.next)
         self.image_url_entry.connect(

vanilla_installer/defaults/keyboard.py

@@ -78,11 +78,14 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = True
         self.__keymaps = KeyMaps()
-
         self.__keyboard_rows = self.__generate_keyboard_list_widgets(
             self.selected_keyboard
         )
+
+
+    def gen_deltas(self):
         for i, widget in enumerate(self.__keyboard_rows):
             self.all_keyboards_group.append(widget)
 
@@ -103,6 +106,11 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         if "VANILLA_NO_APPLY_XKB" not in os.environ:
             self.test_focus_controller.connect("enter", self.__apply_layout)
 
+
+    def del_deltas(self):
+        self.all_keyboards_group.remove_all()
+
+
     def __keyboard_verify(self, *args):
         if self.selected_keyboard != []:
             self.btn_next.set_sensitive(True)
@@ -192,7 +200,7 @@ def __set_keyboard_layout(self, selected_keyboard):
                 self.__create_keyboard_layout_array(selected_keyboard) 
             ),
         )
-    
+
     def __create_keyboard_layout_array(self, selected_keyboard):
         keyboard_layout_array = []
         for i in selected_keyboard:

vanilla_installer/defaults/language.py

@@ -60,10 +60,8 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__key = key
         self.__step = step
         self.__language_rows = []
-
+        self.delta = True
         self.__generate_language_list_widgets()
-        for widget in self.__language_rows:
-            self.all_languages_group.append(widget)
 
         # signals
         self.btn_next.connect("clicked", self.__window.next)
@@ -77,6 +75,15 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.search_controller.connect("key-released", self.__on_search_key_pressed)
         self.entry_search_language.add_controller(self.search_controller)
 
+
+    def gen_deltas(self):
+        for widget in self.__language_rows:
+            self.all_languages_group.append(widget)
+
+
+    def del_deltas(self):
+        self.all_languages_group.remove_all()
+
     def __language_verify(self, *args):
         if self.selected_language["language_subtitle"] is not None:
             self.btn_next.set_sensitive(True)

vanilla_installer/defaults/network.py

@@ -256,6 +256,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__step = step
         self.__nm_client = NM.Client.new()
         self.__step_num = step["num"]
+        self.delta = False
 
         self.__devices = []
         self.__wired_children = []

vanilla_installer/defaults/nvidia.py

@@ -34,6 +34,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = False
 
         self.btn_yes.connect("clicked", self.use_proprietary_drivers)
         self.btn_no.connect("clicked", self.use_open_drivers)

vanilla_installer/defaults/theme.py

@@ -31,6 +31,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = False
 
         self.__build_ui()
 

vanilla_installer/defaults/timezone.py

@@ -86,10 +86,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__key = key
         self.__step = step
         self.__step_num = step["num"]
-
-        self.__expanders = []
-        self.__tz_entries = []
-        self.__generate_timezone_list_widgets()
+        self.delta = True
 
         # signals
         self.btn_next.connect("clicked", self.__window.next)
@@ -98,6 +95,20 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.search_controller.connect("key-released", self.__on_search_key_pressed)
         self.entry_search_timezone.add_controller(self.search_controller)
 
+
+    def gen_deltas(self):
+        self.__expanders = []
+        self.__tz_entries = []
+        self.__generate_timezone_list_widgets()
+
+
+    def del_deltas(self):
+        self.__tz_entries = []
+        for i in self.__expanders:
+            self.all_timezones_group.remove(i)
+        self.__expanders = []
+
+
     def timezone_verify(self, carousel=None, idx=None):
         if idx is not None and idx != self.__step_num:
             return

vanilla_installer/defaults/vm.py

@@ -33,6 +33,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = False
 
         self.btn_yes.connect("clicked", self.use_vm_tools_fn)
         self.btn_no.connect("clicked", self.skip_vm_tools_fn)

vanilla_installer/defaults/welcome.py

@@ -36,6 +36,7 @@ def __init__(self, window, distro_info, key, step, **kwargs):
         self.__distro_info = distro_info
         self.__key = key
         self.__step = step
+        self.delta = False
 
         distro_name = self.__distro_info.get("name", "Vanilla OS")
         distro_logo = self.__distro_info.get("logo", "org.vanillaos.Installer-flower")

vanilla_installer/views/confirm.py

@@ -58,6 +58,7 @@ class VanillaConfirm(Adw.Bin):
 
     def __init__(self, window, **kwargs):
         super().__init__(**kwargs)
+        self.delta = False
 
     def update(self, finals):
         try:

vanilla_installer/views/done.py

@@ -35,6 +35,7 @@ def __init__(self, window, **kwargs):
         super().__init__(**kwargs)
         self.__window = window
         self.__log = None
+        self.delta = False
 
         self.status_page.set_description(
             _("Restart your device to enjoy your {} experience.").format(

vanilla_installer/views/progress.py

@@ -48,6 +48,7 @@ def __init__(self, window, tour: dict, **kwargs):
         self.__font.set_weight(Pango.Weight.NORMAL)
         self.__font.set_stretch(Pango.Stretch.NORMAL)
         self.style_manager = Adw.StyleManager().get_default()
+        self.delta = False
 
         self.__build_ui()
         self.__on_setup_terminal_colors()

vanilla_installer/windows/main_window.py

@@ -145,6 +145,10 @@ def next(self, widget=None, fn=None, *args):
         logger.info("Going to next page")
 
         cur_index = self.carousel.get_position()
+        page = self.carousel.get_nth_page(cur_index)
+        if page.delta:
+            logger.info(f"Removing deltas of page {int(cur_index)}")
+            page.del_deltas()
         logger.info(f"Next page is {int(cur_index + 1)}")
 
         if fn is not None:
@@ -154,15 +158,23 @@ def next(self, widget=None, fn=None, *args):
 
         page = self.carousel.get_nth_page(cur_index + 1)
         self.carousel.scroll_to(page, True)
+        if page.delta:
+            logger.info(f"Generating deltas of page {int(cur_index + 1)}")
+            page.gen_deltas()
 
     def back(self, *args):
         logger.info("Going to previous page")
 
         cur_index = self.carousel.get_position()
+        page = self.carousel.get_nth_page(cur_index)
+        if page.delta:
+            page.del_deltas()
         logger.info(f"Previous page is {int(cur_index - 1)}")
 
         page = self.carousel.get_nth_page(cur_index - 1)
         self.carousel.scroll_to(page, True)
+        if page.delta:
+            page.gen_deltas()
 
     def toast(self, message, timeout=3):
         toast = Adw.Toast.new(message)