reenable transport roll in arranger

crates/tek_core/src/focus.rs

@@ -54,6 +54,15 @@ impl<F: Focusable<E>, E: Engine> Focusable<E> for Option<F>
     }
 }
 
+impl<F: Focusable<E>, E: Engine> Focusable<E> for Arc<RwLock<F>> {
+    fn is_focused (&self) -> bool {
+        self.read().unwrap().is_focused()
+    }
+    fn set_focused (&mut self, focused: bool) {
+        self.write().unwrap().set_focused(focused)
+    }
+}
+
 /// Implement the [Focus] trait for a component.
 #[macro_export] macro_rules! focus {
     ($struct:ident ($focus:ident) : $count:expr => [