Implement HTMLFormElement::Elements

Fixes #8566

components/script/dom/htmlformcontrolscollection.rs

@@ -0,0 +1,62 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::codegen::Bindings::HTMLCollectionBinding::HTMLCollectionMethods;
+use dom::bindings::codegen::Bindings::HTMLFormControlsCollectionBinding;
+use dom::bindings::codegen::Bindings::HTMLFormControlsCollectionBinding::HTMLFormControlsCollectionMethods;
+use dom::bindings::global::GlobalRef;
+use dom::bindings::js::Root;
+use dom::bindings::reflector::reflect_dom_object;
+use dom::element::Element;
+use dom::htmlcollection::{CollectionFilter, HTMLCollection};
+use dom::node::Node;
+use dom::window::Window;
+use util::str::DOMString;
+
+#[dom_struct]
+pub struct HTMLFormControlsCollection {
+    collection: HTMLCollection,
+}
+
+impl HTMLFormControlsCollection {
+    fn new_inherited(root: &Node, filter: Box<CollectionFilter + 'static>) -> HTMLFormControlsCollection {
+        HTMLFormControlsCollection {
+            collection: HTMLCollection::new_inherited(root, filter)
+        }
+    }
+
+    pub fn new(window: &Window, root: &Node, filter: Box<CollectionFilter + 'static>)
+        -> Root<HTMLFormControlsCollection>
+    {
+        reflect_dom_object(box HTMLFormControlsCollection::new_inherited(root, filter),
+                           GlobalRef::Window(window),
+                           HTMLFormControlsCollectionBinding::Wrap)
+    }
+
+    // FIXME: This shouldn't need to be implemented here since HTMLCollection (the parent of
+    // HTMLFormControlsCollection) implements Length
+    pub fn Length(&self) -> u32 {
+        self.collection.Length()
+    }
+}
+
+impl HTMLFormControlsCollectionMethods for HTMLFormControlsCollection {
+    // https://html.spec.whatwg.org/multipage/#dom-htmlformcontrolscollection-nameditem
+    fn NamedGetter(&self, name: DOMString, found: &mut bool) -> Option<Root<Element>> {
+        self.collection.NamedGetter(name, found)
+    }
+
+    // https://html.spec.whatwg.org/multipage/#the-htmlformcontrolscollection-interface:supported-property-names
+    fn SupportedPropertyNames(&self) -> Vec<DOMString> {
+        self.collection.SupportedPropertyNames()
+    }
+
+    // FIXME: This shouldn't need to be implemented here since HTMLCollection (the parent of
+    // HTMLFormControlsCollection) implements IndexedGetter
+    //
+    // https://dom.spec.whatwg.org/#dom-htmlcollection-item
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Root<Element>> {
+        self.collection.IndexedGetter(index, found)
+    }
+}