wdt: wip new pos handling trait

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/wdriver.rs b/wdriver.rs
index c335c0cc02f302fb7b7b93413d04330ad1365c23..cf032a1834befd4adb8a646e377c76b14b0ab8b9 100644 (file)
--- a/wdriver.rs
+++ b/wdriver.rs
@@ -1107,6 +1107,11 @@ trait IntoInWindow<T> {
   fn w_into<'g>(self, w: &'g WindowGuard) -> Result<T, AE>;
 }
 
+impl<T> IntoInWindow<T> for T {
+  #[throws(AE)]
+  fn w_into<'g>(self, _w: &'g WindowGuard) -> T { self }
+}
+
 impl IntoInWindow<WebPos> for Pos {
   #[throws(AE)]
   fn w_into<'g>(self, w: &'g WindowGuard) -> WebPos {