pub trait OverlayExt: IsA<Overlay> + Sealed + 'static {
// Provided methods
fn add_overlay(&self, widget: &impl IsA<Widget>) { ... }
fn is_overlay_pass_through(&self, widget: &impl IsA<Widget>) -> bool { ... }
fn reorder_overlay(&self, child: &impl IsA<Widget>, index_: i32) { ... }
fn set_overlay_pass_through(
&self,
widget: &impl IsA<Widget>,
pass_through: bool
) { ... }
fn child_index<T: IsA<Widget>>(&self, item: &T) -> i32 { ... }
fn set_child_index<T: IsA<Widget>>(&self, item: &T, index: i32) { ... }
}