1 files changed, 70 insertions, 0 deletions
diff --git a/dom/base/IdleDeadline.cpp b/dom/base/IdleDeadline.cpp
new file mode 100644
index 000000000..ef475e543
--- /dev/null
+++ b/dom/base/IdleDeadline.cpp
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 <algorithm>
+
+#include "mozilla/dom/IdleDeadline.h"
+#include "mozilla/dom/IdleDeadlineBinding.h"
+#include "mozilla/dom/Performance.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsDOMNavigationTiming.h"
+#include "nsPIDOMWindow.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(IdleDeadline, mWindow)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(IdleDeadline)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(IdleDeadline)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleDeadline)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+IdleDeadline::IdleDeadline(nsPIDOMWindowInner* aWindow, bool aDidTimeout,
+                           DOMHighResTimeStamp aDeadline)
+  : mWindow(aWindow)
+  , mDidTimeout(aDidTimeout)
+  , mDeadline(aDeadline)
+{
+}
+
+IdleDeadline::~IdleDeadline()
+{
+}
+
+JSObject*
+IdleDeadline::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return IdleDeadlineBinding::Wrap(aCx, this, aGivenProto);
+}
+
+DOMHighResTimeStamp
+IdleDeadline::TimeRemaining()
+{
+  if (mDidTimeout) {
+    return 0.0;
+  }
+
+  RefPtr<Performance> performance = mWindow->GetPerformance();
+  if (!performance) {
+    // If there is no performance object the window is partially torn
+    // down, so we can safely say that there is no time remaining.
+    return 0.0;
+  }
+
+  return std::max(mDeadline - performance->Now(), 0.0);
+}
+
+bool
+IdleDeadline::DidTimeout() const
+{
+  return mDidTimeout;
+}
+
+} // namespace dom
+} // namespace mozilla