1 files changed, 96 insertions, 0 deletions
diff --git a/dom/midi/MIDIMessageEvent.cpp b/dom/midi/MIDIMessageEvent.cpp
new file mode 100644
index 0000000000..f539bf7c89
--- /dev/null
+++ b/dom/midi/MIDIMessageEvent.cpp
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#include "mozilla/dom/EventBinding.h"
+#include "mozilla/dom/MIDIMessageEvent.h"
+#include "mozilla/dom/MIDIMessageEventBinding.h"
+#include "js/GCAPI.h"
+#include "jsfriendapi.h"
+#include "mozilla/FloatingPoint.h"
+#include "mozilla/HoldDropJSObjects.h"
+#include "mozilla/dom/Nullable.h"
+#include "mozilla/dom/PrimitiveConversions.h"
+#include "mozilla/dom/TypedArray.h"
+#include "mozilla/dom/Performance.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED_WITH_JS_MEMBERS(MIDIMessageEvent, Event, (),
+                                                   (mData))
+
+NS_IMPL_ADDREF_INHERITED(MIDIMessageEvent, Event)
+NS_IMPL_RELEASE_INHERITED(MIDIMessageEvent, Event)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MIDIMessageEvent)
+NS_INTERFACE_MAP_END_INHERITING(Event)
+
+MIDIMessageEvent::MIDIMessageEvent(mozilla::dom::EventTarget* aOwner)
+    : Event(aOwner, nullptr, nullptr) {
+  mozilla::HoldJSObjects(this);
+}
+
+MIDIMessageEvent::~MIDIMessageEvent() { mozilla::DropJSObjects(this); }
+
+JSObject* MIDIMessageEvent::WrapObjectInternal(
+    JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
+  return MIDIMessageEvent_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+MIDIMessageEvent* MIDIMessageEvent::AsMIDIMessageEvent() { return this; }
+
+already_AddRefed<MIDIMessageEvent> MIDIMessageEvent::Constructor(
+    EventTarget* aOwner, const class TimeStamp& aReceivedTime,
+    const nsTArray<uint8_t>& aData) {
+  MOZ_ASSERT(aOwner);
+  RefPtr<MIDIMessageEvent> e = new MIDIMessageEvent(aOwner);
+  e->InitEvent(u"midimessage"_ns, false, false);
+  e->mEvent->mTimeStamp = aReceivedTime;
+  e->mRawData = aData.Clone();
+  e->SetTrusted(true);
+  return e.forget();
+}
+
+already_AddRefed<MIDIMessageEvent> MIDIMessageEvent::Constructor(
+    const GlobalObject& aGlobal, const nsAString& aType,
+    const MIDIMessageEventInit& aEventInitDict, ErrorResult& aRv) {
+  nsCOMPtr<EventTarget> owner = do_QueryInterface(aGlobal.GetAsSupports());
+  RefPtr<MIDIMessageEvent> e = new MIDIMessageEvent(owner);
+  bool trusted = e->Init(owner);
+  e->InitEvent(aType, aEventInitDict.mBubbles, aEventInitDict.mCancelable);
+  // Set data for event. Timestamp will always be set to Now() (default for
+  // event) using this constructor.
+  if (aEventInitDict.mData.WasPassed()) {
+    const auto& a = aEventInitDict.mData.Value();
+    a.ComputeState();
+    e->mData =
+        Uint8Array::Create(aGlobal.Context(), owner, a.Length(), a.Data());
+    if (NS_WARN_IF(!e->mData)) {
+      aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
+      return nullptr;
+    }
+  }
+
+  e->SetTrusted(trusted);
+  mozilla::HoldJSObjects(e.get());
+  return e.forget();
+}
+
+void MIDIMessageEvent::GetData(JSContext* cx,
+                               JS::MutableHandle<JSObject*> aData,
+                               ErrorResult& aRv) {
+  if (!mData) {
+    mData =
+        Uint8Array::Create(cx, this, mRawData.Length(), mRawData.Elements());
+    if (!mData) {
+      aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
+      return;
+    }
+    mRawData.Clear();
+  }
+  aData.set(mData);
+}
+
+}  // namespace mozilla::dom