Scroller: preserve original touch valid callback (#37363)

preserve
2026-07-20 00:32:11 +08:00 · 2026-02-23 20:20:44 -08:00
parent 8543afc78a
commit bd3b7a1d87
1 changed files with 5 additions and 1 deletions
@@ -141,8 +141,12 @@ class Scroller(Widget):

  def add_widget(self, item: Widget) -> None:
    self._items.append(item)
+
+    # preserve original touch valid callback
+    original_touch_valid_callback = item._touch_valid_callback
    item.set_touch_valid_callback(lambda: self.scroll_panel.is_touch_valid() and self.enabled and self._scrolling_to is None
-                                          and not self.moving_items)
+                                          and not self.moving_items and (original_touch_valid_callback() if
+                                                                         original_touch_valid_callback else True))

  def set_scrolling_enabled(self, enabled: bool | Callable[[], bool]) -> None:
    """Set whether scrolling is enabled (does not affect widget enabled state)."""