1 files changed, 46 insertions, 0 deletions
diff --git a/dom/ipc/SharedMapChangeEvent.h b/dom/ipc/SharedMapChangeEvent.h
new file mode 100644
index 0000000000..06bc53933b
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+++ b/dom/ipc/SharedMapChangeEvent.h
@@ -0,0 +1,46 @@
+/* -*- 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 dom_ipc_SharedMapChangeEvent_h
+#define dom_ipc_SharedMapChangeEvent_h
+
+#include "mozilla/dom/MozSharedMapBinding.h"
+
+#include "mozilla/dom/Event.h"
+#include "nsTArray.h"
+
+namespace mozilla::dom::ipc {
+
+class SharedMapChangeEvent final : public Event {
+ public:
+  NS_INLINE_DECL_REFCOUNTING_INHERITED(SharedMapChangeEvent, Event)
+
+  JSObject* WrapObjectInternal(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override {
+    return MozSharedMapChangeEvent_Binding::Wrap(aCx, this, aGivenProto);
+  }
+
+  static already_AddRefed<SharedMapChangeEvent> Constructor(
+      EventTarget* aEventTarget, const nsAString& aType,
+      const MozSharedMapChangeEventInit& aInit);
+
+  void GetChangedKeys(nsTArray<nsString>& aChangedKeys) const {
+    aChangedKeys.AppendElements(mChangedKeys);
+  }
+
+ protected:
+  ~SharedMapChangeEvent() override = default;
+
+ private:
+  explicit SharedMapChangeEvent(EventTarget* aEventTarget)
+      : Event(aEventTarget, nullptr, nullptr) {}
+
+  nsTArray<nsString> mChangedKeys;
+};
+
+}  // namespace mozilla::dom::ipc
+
+#endif  // dom_ipc_SharedMapChangeEvent_h