Web Async Rework (#3082)

src/platform_impl/web/web_sys/canvas.rs

@@ -1,6 +1,5 @@
 use std::cell::Cell;
 use std::rc::{Rc, Weak};
-use std::sync::atomic::AtomicBool;
 use std::sync::{Arc, Mutex};
 
 use smol_str::SmolStr;
@@ -29,7 +28,7 @@ use super::{event, ButtonsState, ResizeScaleHandle};
 pub struct Canvas {
     common: Common,
     id: WindowId,
-    pub has_focus: Arc<AtomicBool>,
+    pub has_focus: Rc<Cell<bool>>,
     pub is_intersecting: Option<bool>,
     on_touch_start: Option<EventListenerHandle<dyn FnMut(Event)>>,
     on_focus: Option<EventListenerHandle<dyn FnMut(FocusEvent)>>,
@@ -139,7 +138,7 @@ impl Canvas {
         Ok(Canvas {
             common,
             id,
-            has_focus: Arc::new(AtomicBool::new(false)),
+            has_focus: Rc::new(Cell::new(false)),
             is_intersecting: None,
             on_touch_start: None,
             on_blur: None,