1 files changed, 47 insertions, 0 deletions
diff --git a/dom/events/TransitionEvent.h b/dom/events/TransitionEvent.h
new file mode 100644
index 0000000000..74c9001b00
--- /dev/null
+++ b/dom/events/TransitionEvent.h
@@ -0,0 +1,47 @@
+/* -*- 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_TransitionEvent_h_
+#define mozilla_dom_TransitionEvent_h_
+
+#include "mozilla/EventForwards.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/TransitionEventBinding.h"
+#include "nsStringFwd.h"
+
+namespace mozilla::dom {
+
+class TransitionEvent : public Event {
+ public:
+  TransitionEvent(EventTarget* aOwner, nsPresContext* aPresContext,
+                  InternalTransitionEvent* aEvent);
+
+  NS_INLINE_DECL_REFCOUNTING_INHERITED(TransitionEvent, Event)
+
+  static already_AddRefed<TransitionEvent> Constructor(
+      const GlobalObject& aGlobal, const nsAString& aType,
+      const TransitionEventInit& aParam);
+
+  virtual JSObject* WrapObjectInternal(
+      JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override {
+    return TransitionEvent_Binding::Wrap(aCx, this, aGivenProto);
+  }
+
+  void GetPropertyName(nsAString& aPropertyName) const;
+  void GetPseudoElement(nsAString& aPreudoElement) const;
+
+  float ElapsedTime();
+
+ protected:
+  ~TransitionEvent() = default;
+};
+
+}  // namespace mozilla::dom
+
+already_AddRefed<mozilla::dom::TransitionEvent> NS_NewDOMTransitionEvent(
+    mozilla::dom::EventTarget* aOwner, nsPresContext* aPresContext,
+    mozilla::InternalTransitionEvent* aEvent);
+
+#endif  // mozilla_dom_TransitionEvent_h_