Implement Document.createRange().

src/components/script/dom/document.rs

@@ -38,15 +38,16 @@ use dom::htmlelement::HTMLElement;
 use dom::htmlheadelement::HTMLHeadElement;
 use dom::htmlhtmlelement::HTMLHtmlElement;
 use dom::htmltitleelement::HTMLTitleElement;
+use dom::location::Location;
 use dom::mouseevent::MouseEvent;
 use dom::node::{Node, ElementNodeTypeId, DocumentNodeTypeId, NodeHelpers};
 use dom::node::{CloneChildren, DoNotCloneChildren};
 use dom::nodelist::NodeList;
 use dom::text::Text;
 use dom::processinginstruction::ProcessingInstruction;
+use dom::range::Range;
 use dom::uievent::UIEvent;
 use dom::window::{Window, WindowHelpers};
-use dom::location::Location;
 use html::hubbub_html_parser::build_element_from_tag;
 use hubbub::hubbub::{QuirksMode, NoQuirks, LimitedQuirks, FullQuirks};
 use layout_interface::{DocumentDamageLevel, ContentChangedDocumentDamage};
@@ -504,6 +505,11 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         }
     }
 
+    // http://dom.spec.whatwg.org/#dom-document-createrange
+    fn CreateRange(&self) -> Temporary<Range> {
+        Range::new(self)
+    }
+
     // http://www.whatwg.org/specs/web-apps/current-work/#document.title
     fn Title(&self) -> DOMString {
         let mut title = String::new();

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

@@ -43,6 +43,8 @@ interface Document : Node {
 
   [Throws]
   Event createEvent(DOMString interface_);
+
+  Range createRange();
 };
 
 /* http://www.whatwg.org/specs/web-apps/current-work/#the-document-object */