Implement NonDocumentTypeChildNode::*ElementSibling()

1 files changed, 16 insertions, 2 deletions

diff --git a/components/script/dom/characterdata.rs b/components/script/dom/characterdata.rs
index 1f2b18f1b99..2b730469582 100644
--- a/components/script/dom/characterdata.rs
+++ b/components/script/dom/characterdata.rs
@@ -6,11 +6,13 @@
 
 use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::CharacterDataBinding::CharacterDataMethods;
-use dom::bindings::codegen::InheritTypes::{CharacterDataDerived, NodeCast};
+use dom::bindings::codegen::InheritTypes::{CharacterDataDerived, ElementCast};
+use dom::bindings::codegen::InheritTypes::NodeCast;
 use dom::bindings::error::{Fallible, ErrorResult};
 use dom::bindings::error::Error::IndexSize;
-use dom::bindings::js::JSRef;
+use dom::bindings::js::{JSRef, Temporary};
 use dom::document::Document;
+use dom::element::Element;
 use dom::eventtarget::{EventTarget, EventTargetTypeId};
 use dom::node::{Node, NodeHelpers, NodeTypeId};
 
@@ -127,5 +129,17 @@ impl<'a> CharacterDataMethods for JSRef<'a, CharacterData> {
         let node: JSRef<Node> = NodeCast::from_ref(self);
         node.remove_self();
     }
+
+    // https://dom.spec.whatwg.org/#dom-nondocumenttypechildnode-previouselementsibling
+    fn GetPreviousElementSibling(self) -> Option<Temporary<Element>> {
+        NodeCast::from_ref(self).preceding_siblings()
+                                .filter_map(ElementCast::to_temporary).next()
+    }
+
+    // https://dom.spec.whatwg.org/#dom-nondocumenttypechildnode-nextelementsibling
+    fn GetNextElementSibling(self) -> Option<Temporary<Element>> {
+        NodeCast::from_ref(self).following_siblings()
+                                .filter_map(ElementCast::to_temporary).next()
+    }
 }