1 files changed, 162 insertions, 0 deletions
diff --git a/dom/events/MessageEvent.cpp b/dom/events/MessageEvent.cpp
new file mode 100644
index 0000000000..92e59a6348
--- /dev/null
+++ b/dom/events/MessageEvent.cpp
@@ -0,0 +1,162 @@
+/* -*- 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/. */
+
+#include "mozilla/dom/MessageEvent.h"
+#include "mozilla/dom/BrowsingContext.h"
+#include "mozilla/dom/MessageEventBinding.h"
+#include "mozilla/dom/MessagePort.h"
+#include "mozilla/dom/MessagePortBinding.h"
+#include "mozilla/dom/ServiceWorker.h"
+
+#include "mozilla/HoldDropJSObjects.h"
+#include "jsapi.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(MessageEvent)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(MessageEvent, Event)
+  tmp->mData.setUndefined();
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindowSource)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mPortSource)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mServiceWorkerSource)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mPorts)
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(MessageEvent, Event)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindowSource)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPortSource)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mServiceWorkerSource)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPorts)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(MessageEvent, Event)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mData)
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MessageEvent)
+NS_INTERFACE_MAP_END_INHERITING(Event)
+
+NS_IMPL_ADDREF_INHERITED(MessageEvent, Event)
+NS_IMPL_RELEASE_INHERITED(MessageEvent, Event)
+
+MessageEvent::MessageEvent(EventTarget* aOwner, nsPresContext* aPresContext,
+                           WidgetEvent* aEvent)
+    : Event(aOwner, aPresContext, aEvent), mData(JS::UndefinedValue()) {}
+
+MessageEvent::~MessageEvent() { DropJSObjects(this); }
+
+JSObject* MessageEvent::WrapObjectInternal(JSContext* aCx,
+                                           JS::Handle<JSObject*> aGivenProto) {
+  return mozilla::dom::MessageEvent_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void MessageEvent::GetData(JSContext* aCx, JS::MutableHandle<JS::Value> aData,
+                           ErrorResult& aRv) {
+  aData.set(mData);
+  if (!JS_WrapValue(aCx, aData)) {
+    aRv.Throw(NS_ERROR_FAILURE);
+  }
+}
+
+void MessageEvent::GetOrigin(nsAString& aOrigin) const { aOrigin = mOrigin; }
+
+void MessageEvent::GetLastEventId(nsAString& aLastEventId) const {
+  aLastEventId = mLastEventId;
+}
+
+void MessageEvent::GetSource(
+    Nullable<OwningWindowProxyOrMessagePortOrServiceWorker>& aValue) const {
+  if (mWindowSource) {
+    aValue.SetValue().SetAsWindowProxy() = mWindowSource;
+  } else if (mPortSource) {
+    aValue.SetValue().SetAsMessagePort() = mPortSource;
+  } else if (mServiceWorkerSource) {
+    aValue.SetValue().SetAsServiceWorker() = mServiceWorkerSource;
+  }
+}
+
+/* static */
+already_AddRefed<MessageEvent> MessageEvent::Constructor(
+    const GlobalObject& aGlobal, const nsAString& aType,
+    const MessageEventInit& aParam) {
+  nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
+  return Constructor(t, aType, aParam);
+}
+
+/* static */
+already_AddRefed<MessageEvent> MessageEvent::Constructor(
+    EventTarget* aEventTarget, const nsAString& aType,
+    const MessageEventInit& aParam) {
+  RefPtr<MessageEvent> event = new MessageEvent(aEventTarget, nullptr, nullptr);
+
+  event->InitEvent(aType, aParam.mBubbles, aParam.mCancelable);
+  bool trusted = event->Init(aEventTarget);
+  event->SetTrusted(trusted);
+
+  event->mData = aParam.mData;
+
+  mozilla::HoldJSObjects(event.get());
+
+  event->mOrigin = aParam.mOrigin;
+  event->mLastEventId = aParam.mLastEventId;
+
+  if (!aParam.mSource.IsNull()) {
+    if (aParam.mSource.Value().IsWindowProxy()) {
+      event->mWindowSource = aParam.mSource.Value().GetAsWindowProxy().get();
+    } else if (aParam.mSource.Value().IsMessagePort()) {
+      event->mPortSource = aParam.mSource.Value().GetAsMessagePort();
+    } else {
+      event->mServiceWorkerSource = aParam.mSource.Value().GetAsServiceWorker();
+    }
+
+    MOZ_ASSERT(event->mWindowSource || event->mPortSource ||
+               event->mServiceWorkerSource);
+  }
+
+  event->mPorts.AppendElements(aParam.mPorts);
+
+  return event.forget();
+}
+
+void MessageEvent::InitMessageEvent(
+    JSContext* aCx, const nsAString& aType, mozilla::CanBubble aCanBubble,
+    mozilla::Cancelable aCancelable, JS::Handle<JS::Value> aData,
+    const nsAString& aOrigin, const nsAString& aLastEventId,
+    const Nullable<WindowProxyOrMessagePortOrServiceWorker>& aSource,
+    const Sequence<OwningNonNull<MessagePort>>& aPorts) {
+  NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
+
+  Event::InitEvent(aType, aCanBubble, aCancelable);
+  mData = aData;
+  mozilla::HoldJSObjects(this);
+  mOrigin = aOrigin;
+  mLastEventId = aLastEventId;
+
+  mWindowSource = nullptr;
+  mPortSource = nullptr;
+  mServiceWorkerSource = nullptr;
+
+  if (!aSource.IsNull()) {
+    if (aSource.Value().IsWindowProxy()) {
+      mWindowSource = aSource.Value().GetAsWindowProxy().get();
+    } else if (aSource.Value().IsMessagePort()) {
+      mPortSource = &aSource.Value().GetAsMessagePort();
+    } else {
+      mServiceWorkerSource = &aSource.Value().GetAsServiceWorker();
+    }
+  }
+
+  mPorts.Clear();
+  mPorts.AppendElements(aPorts);
+  MessageEvent_Binding::ClearCachedPortsValue(this);
+}
+
+void MessageEvent::GetPorts(nsTArray<RefPtr<MessagePort>>& aPorts) {
+  aPorts = mPorts.Clone();
+}
+
+}  // namespace mozilla::dom