1 files changed, 93 insertions, 0 deletions
diff --git a/dom/performance/PerformanceNavigationTiming.h b/dom/performance/PerformanceNavigationTiming.h
new file mode 100644
index 0000000000..2a10b34581
--- /dev/null
+++ b/dom/performance/PerformanceNavigationTiming.h
@@ -0,0 +1,93 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_dom_PerformanceNavigationTiming_h___
+#define mozilla_dom_PerformanceNavigationTiming_h___
+
+#include <stdint.h>
+#include <utility>
+#include "js/RootingAPI.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/dom/PerformanceNavigationTimingBinding.h"
+#include "mozilla/dom/PerformanceResourceTiming.h"
+#include "nsDOMNavigationTiming.h"
+#include "nsISupports.h"
+#include "nsLiteralString.h"
+#include "nsString.h"
+#include "nsTLiteralString.h"
+
+class JSObject;
+class nsIHttpChannel;
+class nsITimedChannel;
+struct JSContext;
+
+namespace mozilla::dom {
+
+class Performance;
+class PerformanceTimingData;
+
+// https://www.w3.org/TR/navigation-timing-2/#sec-PerformanceNavigationTiming
+class PerformanceNavigationTiming final : public PerformanceResourceTiming {
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // Note that aPerformanceTiming must be initalized with zeroTime = 0
+  // so that timestamps are relative to startTime, as opposed to the
+  // performance.timing object for which timestamps are absolute and has a
+  // zeroTime initialized to navigationStart
+  // aPerformanceTiming and aPerformance must be non-null.
+  PerformanceNavigationTiming(
+      UniquePtr<PerformanceTimingData>&& aPerformanceTiming,
+      Performance* aPerformance, const nsAString& aName)
+      : PerformanceResourceTiming(std::move(aPerformanceTiming), aPerformance,
+                                  aName) {
+    SetEntryType(u"navigation"_ns);
+    SetInitiatorType(u"navigation"_ns);
+  }
+
+  DOMHighResTimeStamp Duration() const override {
+    return LoadEventEnd() - StartTime();
+  }
+
+  DOMHighResTimeStamp StartTime() const override { return 0; }
+
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  DOMHighResTimeStamp UnloadEventStart() const;
+  DOMHighResTimeStamp UnloadEventEnd() const;
+
+  DOMHighResTimeStamp DomInteractive() const;
+  DOMHighResTimeStamp DomContentLoadedEventStart() const;
+  DOMHighResTimeStamp DomContentLoadedEventEnd() const;
+  DOMHighResTimeStamp DomComplete() const;
+  DOMHighResTimeStamp LoadEventStart() const;
+  DOMHighResTimeStamp LoadEventEnd() const;
+
+  DOMHighResTimeStamp RedirectStart(
+      nsIPrincipal& aSubjectPrincipal) const override;
+  DOMHighResTimeStamp RedirectEnd(
+      nsIPrincipal& aSubjectPrincipal) const override;
+
+  NavigationType Type() const;
+  uint16_t RedirectCount() const;
+
+  void UpdatePropertiesFromHttpChannel(nsIHttpChannel* aHttpChannel,
+                                       nsITimedChannel* aChannel);
+
+  /*
+   * For use with the WebIDL Func attribute to determine whether
+   * window.PerformanceNavigationTiming is exposed.
+   */
+  static bool Enabled(JSContext* aCx, JSObject* aGlobal);
+
+ private:
+  ~PerformanceNavigationTiming() = default;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_PerformanceNavigationTiming_h___