style: Match :lang() using snapshots correctly.

2025-08-06 22:15:33 +01:00 · 2017-06-07 12:30:10 +08:00 · 2017-06-07 12:30:10 +08:00 · f492c8fe6e
commit f492c8fe6e
parent c7e2500311
6 changed files with 134 additions and 11 deletions
--- a/components/style/gecko/snapshot.rs
+++ b/components/style/gecko/snapshot.rs
@ -181,4 +181,14 @@ impl ElementSnapshot for GeckoElementSnapshot {
                                     callback,
                                     bindings::Gecko_SnapshotClassOrClassList)
    }
+
+    #[inline]
+    fn lang_attr(&self) -> Option<Atom> {
+        let ptr = unsafe { bindings::Gecko_SnapshotLangValue(self) };
+        if ptr.is_null() {
+            None
+        } else {
+            Some(unsafe { Atom::from_addrefed(ptr) })
+        }
+    }
 }