1 files changed, 52 insertions, 0 deletions
diff --git a/dom/events/CustomEvent.h b/dom/events/CustomEvent.h
new file mode 100644
index 0000000000..f046ea323e
--- /dev/null
+++ b/dom/events/CustomEvent.h
@@ -0,0 +1,52 @@
+/* -*- 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 CustomEvent_h__
+#define CustomEvent_h__
+
+#include "js/Value.h"
+#include "mozilla/dom/Event.h"
+
+namespace mozilla::dom {
+
+struct CustomEventInit;
+
+class CustomEvent final : public Event {
+ private:
+  virtual ~CustomEvent();
+
+  JS::Heap<JS::Value> mDetail;
+
+ public:
+  explicit CustomEvent(mozilla::dom::EventTarget* aOwner,
+                       nsPresContext* aPresContext = nullptr,
+                       mozilla::WidgetEvent* aEvent = nullptr);
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(CustomEvent, Event)
+
+  static already_AddRefed<CustomEvent> Constructor(
+      const GlobalObject& aGlobal, const nsAString& aType,
+      const CustomEventInit& aParam);
+
+  virtual JSObject* WrapObjectInternal(
+      JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+  CustomEvent* AsCustomEvent() override { return this; }
+
+  void GetDetail(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval);
+
+  void InitCustomEvent(JSContext* aCx, const nsAString& aType, bool aCanBubble,
+                       bool aCancelable, JS::Handle<JS::Value> aDetail);
+};
+
+}  // namespace mozilla::dom
+
+already_AddRefed<mozilla::dom::CustomEvent> NS_NewDOMCustomEvent(
+    mozilla::dom::EventTarget* aOwner, nsPresContext* aPresContext,
+    mozilla::WidgetEvent* aEvent);
+
+#endif  // CustomEvent_h__