Merge pull request #1017 from jf2048/watch-borrowedobject

glib: implement WatchedObject for BorrowedObject

Author: sdroege

glib-macros/tests/test.rs

@@ -685,6 +685,7 @@ fn closure() {
 
         let inc_by = {
             let obj = glib::Object::new::<SendObject>();
+            let obj = obj.imp().obj();
             let inc_by = glib::closure!(@watch obj => move |x: i32| {
                 let old = obj.value();
                 obj.set_value(x + old);

glib/src/object.rs

@@ -3117,6 +3117,16 @@ impl<T: ObjectType> Watchable<T> for T {
     }
 }
 
+#[doc(hidden)]
+impl<'a, T: ObjectType> Watchable<T> for BorrowedObject<'a, T> {
+    fn watched_object(&self) -> WatchedObject<T> {
+        WatchedObject::new(self)
+    }
+    fn watch_closure(&self, closure: &impl AsRef<Closure>) {
+        ObjectExt::watch_closure(&**self, closure)
+    }
+}
+
 #[doc(hidden)]
 impl<T: ObjectType> Watchable<T> for &T {
     fn watched_object(&self) -> WatchedObject<T> {