diff -r 000000000000 -r 6474c204b198 dom/events/FocusEvent.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/events/FocusEvent.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,90 @@
+/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
+/* 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/. */
+
+#include "mozilla/dom/FocusEvent.h"
+#include "mozilla/ContentEvents.h"
+#include "prtime.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_ISUPPORTS_INHERITED(FocusEvent, UIEvent, nsIDOMFocusEvent)
+
+FocusEvent::FocusEvent(EventTarget* aOwner,
+                       nsPresContext* aPresContext,
+                       InternalFocusEvent* aEvent)
+  : UIEvent(aOwner, aPresContext,
+            aEvent ? aEvent : new InternalFocusEvent(false, NS_FOCUS_CONTENT))
+{
+  if (aEvent) {
+    mEventIsInternal = false;
+  } else {
+    mEventIsInternal = true;
+    mEvent->time = PR_Now();
+  }
+}
+
+/* readonly attribute nsIDOMEventTarget relatedTarget; */
+NS_IMETHODIMP
+FocusEvent::GetRelatedTarget(nsIDOMEventTarget** aRelatedTarget)
+{
+  NS_ENSURE_ARG_POINTER(aRelatedTarget);
+  NS_IF_ADDREF(*aRelatedTarget = GetRelatedTarget());
+  return NS_OK;
+}
+
+EventTarget*
+FocusEvent::GetRelatedTarget()
+{
+  return mEvent->AsFocusEvent()->relatedTarget;
+}
+
+nsresult
+FocusEvent::InitFocusEvent(const nsAString& aType,
+                           bool aCanBubble,
+                           bool aCancelable,
+                           nsIDOMWindow* aView,
+                           int32_t aDetail,
+                           EventTarget* aRelatedTarget)
+{
+  nsresult rv =
+    UIEvent::InitUIEvent(aType, aCanBubble, aCancelable, aView, aDetail);
+  NS_ENSURE_SUCCESS(rv, rv);
+  mEvent->AsFocusEvent()->relatedTarget = aRelatedTarget;
+  return NS_OK;
+}
+
+already_AddRefed<FocusEvent>
+FocusEvent::Constructor(const GlobalObject& aGlobal,
+                        const nsAString& aType,
+                        const FocusEventInit& aParam,
+                        ErrorResult& aRv)
+{
+  nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
+  nsRefPtr<FocusEvent> e = new FocusEvent(t, nullptr, nullptr);
+  bool trusted = e->Init(t);
+  aRv = e->InitFocusEvent(aType, aParam.mBubbles, aParam.mCancelable, aParam.mView,
+                          aParam.mDetail, aParam.mRelatedTarget);
+  e->SetTrusted(trusted);
+  return e.forget();
+}
+
+} // namespace dom
+} // namespace mozilla
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+nsresult
+NS_NewDOMFocusEvent(nsIDOMEvent** aInstancePtrResult,
+                    EventTarget* aOwner,
+                    nsPresContext* aPresContext,
+                    InternalFocusEvent* aEvent)
+{
+  FocusEvent* it = new FocusEvent(aOwner, aPresContext, aEvent);
+  NS_ADDREF(it);
+  *aInstancePtrResult = static_cast<Event*>(it);
+  return NS_OK;
+}