Implemented Document.importNode

Spec:
http://dom.spec.whatwg.org/#dom-document-importnode

src/components/script/dom/bindings/codegen/Bindings.conf

@@ -40,6 +40,7 @@ DOMInterfaces = {
         'getElementsByTagName',
         'getElementsByTagNameNS',
         'images',
+        'importNode',
         'links',
         'plugins',
         'scripts',

src/components/script/dom/document.rs

@@ -28,6 +28,7 @@ use dom::htmlhtmlelement::HTMLHtmlElement;
 use dom::htmltitleelement::HTMLTitleElement;
 use dom::mouseevent::MouseEvent;
 use dom::node::{Node, ElementNodeTypeId, DocumentNodeTypeId, NodeHelpers, INode};
+use dom::node::{CloneChildren, DoNotCloneChildren};
 use dom::text::Text;
 use dom::processinginstruction::ProcessingInstruction;
 use dom::uievent::UIEvent;
@@ -294,6 +295,22 @@ impl Document {
         Ok(ProcessingInstruction::new(target, data, abstract_self))
     }
 
+    // http://dom.spec.whatwg.org/#dom-document-importnode
+    pub fn ImportNode(&self, abstract_self: &JS<Document>, node: &JS<Node>, deep: bool) -> Fallible<JS<Node>> {
+        // Step 1.
+        if node.is_document() {
+            return Err(NotSupported);
+        }
+
+        // Step 2.
+        let clone_children = match deep {
+            true => CloneChildren,
+            false => DoNotCloneChildren
+        };
+
+        Ok(Node::clone(node, Some(abstract_self), clone_children))
+    }
+
     // http://dom.spec.whatwg.org/#dom-document-createevent
     pub fn CreateEvent(&self, interface: DOMString) -> Fallible<JS<Event>> {
         match interface.as_slice() {

src/components/script/dom/node.rs

@@ -728,7 +728,7 @@ fn gather_abstract_nodes(cur: &JS<Node>, refs: &mut ~[JS<Node>], postorder: bool
 }
 
 /// Specifies whether children must be recursively cloned or not.
-enum CloneChildrenFlag {
+pub enum CloneChildrenFlag {
     CloneChildren,
     DoNotCloneChildren
 }
@@ -1287,8 +1287,8 @@ impl Node {
     }
 
     // http://dom.spec.whatwg.org/#concept-node-clone
-    fn clone(node: &JS<Node>, maybe_doc: Option<&JS<Document>>, clone_children: CloneChildrenFlag)
-             -> JS<Node> {
+    pub fn clone(node: &JS<Node>, maybe_doc: Option<&JS<Document>>,
+                 clone_children: CloneChildrenFlag) -> JS<Node> {
         fn clone_recursively(node: &JS<Node>, copy: &mut JS<Node>, doc: &JS<Document>) {
             for ref child in node.get().children() {
                 let mut cloned = Node::clone(child, Some(doc), DoNotCloneChildren);

src/components/script/dom/webidls/Document.webidl

@@ -36,6 +36,9 @@ interface Document : Node {
   [Creator, Throws]
   ProcessingInstruction createProcessingInstruction(DOMString target, DOMString data);
 
+  [Throws]
+  Node importNode(Node node, optional boolean deep = false);
+
   [Creator, Throws]
   Event createEvent(DOMString interface_);
 };