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/* -*- 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
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