ui: add ModalOverlay system for unified modal dialog management (#35478)

add ModalOverlay

system/ui/setup.py

@@ -143,10 +143,6 @@ class Setup:
       self.network_check_thread.join()
 
   def render_network_setup(self, rect: rl.Rectangle):
-    if self.wifi_ui.require_full_screen:
-      self.wifi_ui.render(rect)
-      return
-
     title_rect = rl.Rectangle(rect.x + MARGIN, rect.y + MARGIN, rect.width - MARGIN * 2, TITLE_FONT_SIZE)
     gui_label(title_rect, "Connect to Wi-Fi", TITLE_FONT_SIZE, font_weight=FontWeight.MEDIUM)
 
@@ -255,18 +251,20 @@ class Setup:
       self.state = SetupState.GETTING_STARTED
 
   def render_custom_url(self):
-    result = self.keyboard.render("Enter URL", "for Custom Software")
+    def handle_keyboard_result(result):
+      # Enter pressed
+      if result == 1:
+        url = self.keyboard.text
+        self.keyboard.clear()
+        if url:
+          self.download(url)
 
-    # Enter pressed
-    if result == 1:
-      url = self.keyboard.text
-      self.keyboard.clear()
-      if url:
-        self.download(url)
+      # Cancel pressed
+      elif result == 0:
+        self.state = SetupState.SOFTWARE_SELECTION
 
-    # Cancel pressed
-    elif result == 0:
-      self.state = SetupState.SOFTWARE_SELECTION
+    self.keyboard.set_title("Enter URL", "for Custom Software")
+    gui_app.set_modal_overlay(self.keyboard, callback=handle_keyboard_result)
 
   def download(self, url: str):
     # autocomplete incomplete URLs