Introduce AttrValue::atom().

2 files changed, 9 insertions, 2 deletions

diff --git a/components/script/dom/attr.rs b/components/script/dom/attr.rs
index 55ad525bba3..1820a854cd8 100644
--- a/components/script/dom/attr.rs
+++ b/components/script/dom/attr.rs
@@ -70,6 +70,13 @@ impl AttrValue {
             _ => None
         }
     }
+
+    pub fn atom<'a>(&'a self) -> Option<&'a Atom> {
+        match *self {
+            AttrValue::Atom(ref value) => Some(value),
+            _ => None
+        }
+    }
 }
 
 impl Str for AttrValue {
diff --git a/components/script/dom/element.rs b/components/script/dom/element.rs
index f47651629e6..a9282d829b8 100644
--- a/components/script/dom/element.rs
+++ b/components/script/dom/element.rs
@@ -1385,7 +1385,7 @@ impl<'a> VirtualMethods for JSRef<'a, Element> {
                 if node.is_in_doc() {
                     let doc = document_from_node(*self).root();
                     if !value.as_slice().is_empty() {
-                        let value = Atom::from_slice(value.as_slice());
+                        let value = value.atom().unwrap().clone();
                         doc.r().register_named_element(*self, value);
                     }
                     doc.r().content_changed(node, NodeDamage::NodeStyleDamaged);
@@ -1423,7 +1423,7 @@ impl<'a> VirtualMethods for JSRef<'a, Element> {
                 if node.is_in_doc() {
                     let doc = document_from_node(*self).root();
                     if !value.as_slice().is_empty() {
-                        let value = Atom::from_slice(value.as_slice());
+                        let value = value.atom().unwrap().clone();
                         doc.r().unregister_named_element(*self, value);
                     }
                     doc.r().content_changed(node, NodeDamage::NodeStyleDamaged);