1 files changed, 57 insertions, 0 deletions
diff --git a/dom/vr/VREventObserver.h b/dom/vr/VREventObserver.h
new file mode 100644
index 0000000000..2f61644c79
--- /dev/null
+++ b/dom/vr/VREventObserver.h
@@ -0,0 +1,57 @@
+/* -*- 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_VREventObserver_h
+#define mozilla_dom_VREventObserver_h
+
+#include "mozilla/dom/VRDisplayEventBinding.h"
+#include "nsISupportsImpl.h"  // for NS_INLINE_DECL_REFCOUNTING
+#include "VRManagerChild.h"
+
+class nsGlobalWindowInner;
+
+namespace mozilla::dom {
+
+class VREventObserver final : public gfx::VRManagerEventObserver {
+ public:
+  NS_INLINE_DECL_REFCOUNTING(VREventObserver, override)
+  explicit VREventObserver(nsGlobalWindowInner* aGlobalWindow);
+
+  void NotifyAfterLoad();
+  void NotifyVRDisplayMounted(uint32_t aDisplayID) override;
+  void NotifyVRDisplayUnmounted(uint32_t aDisplayID) override;
+  void NotifyVRDisplayNavigation(uint32_t aDisplayID);
+  void NotifyVRDisplayRequested(uint32_t aDisplayID);
+  void NotifyVRDisplayConnect(uint32_t aDisplayID) override;
+  void NotifyVRDisplayDisconnect(uint32_t aDisplayID) override;
+  void NotifyVRDisplayPresentChange(uint32_t aDisplayID) override;
+  void NotifyPresentationGenerationChanged(uint32_t aDisplayID) override;
+  void NotifyEnumerationCompleted() override;
+  void NotifyDetectRuntimesCompleted() override;
+
+  void DisconnectFromOwner();
+  void UpdateSpentTimeIn2DTelemetry(bool aUpdate);
+  void StartActivity();
+  void StopActivity();
+  bool GetStopActivityStatus() const override;
+
+ private:
+  ~VREventObserver();
+
+  bool IsWebVR(uint32_t aDisplayID) const;
+
+  RefPtr<nsGlobalWindowInner> mWindow;
+  // For WebVR telemetry for tracking users who view content
+  // in the 2D view.
+  TimeStamp mSpendTimeIn2DView;
+  bool mIs2DView;
+  bool mHasReset;
+  bool mStopActivity;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_VREventObserver_h