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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/MessageEventBinding.h"
#include "mozilla/dom/MessagePort.h"
#include "mozilla/dom/MessagePortBinding.h"
#include "mozilla/HoldDropJSObjects.h"
#include "jsapi.h"
#include "nsGlobalWindow.h" // So we can assign an nsGlobalWindow* to mWindowSource
namespace mozilla {
namespace 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(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(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_INHERITED(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()
{
mData.setUndefined();
DropJSObjects(this);
}
JSObject*
MessageEvent::WrapObjectInternal(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return mozilla::dom::MessageEventBinding::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<OwningWindowProxyOrMessagePort>& aValue) const
{
if (mWindowSource) {
aValue.SetValue().SetAsWindowProxy() = mWindowSource->GetOuterWindow();
} else if (mPortSource) {
aValue.SetValue().SetAsMessagePort() = mPortSource;
}
}
/* static */ already_AddRefed<MessageEvent>
MessageEvent::Constructor(const GlobalObject& aGlobal,
const nsAString& aType,
const MessageEventInit& aParam,
ErrorResult& aRv)
{
nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
return Constructor(t, aType, aParam, aRv);
}
/* static */ already_AddRefed<MessageEvent>
MessageEvent::Constructor(EventTarget* aEventTarget,
const nsAString& aType,
const MessageEventInit& aParam,
ErrorResult& aRv)
{
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().IsWindow()) {
event->mWindowSource = aParam.mSource.Value().GetAsWindow()->AsInner();
} else {
event->mPortSource = aParam.mSource.Value().GetAsMessagePort();
}
MOZ_ASSERT(event->mWindowSource || event->mPortSource);
}
event->mPorts.AppendElements(aParam.mPorts);
return event.forget();
}
void
MessageEvent::InitMessageEvent(JSContext* aCx, const nsAString& aType,
bool aCanBubble, bool aCancelable,
JS::Handle<JS::Value> aData,
const nsAString& aOrigin,
const nsAString& aLastEventId,
const Nullable<WindowProxyOrMessagePort>& 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;
if (!aSource.IsNull()) {
if (aSource.Value().IsWindowProxy()) {
auto* windowProxy = aSource.Value().GetAsWindowProxy();
mWindowSource = windowProxy ? windowProxy->GetCurrentInnerWindow() : nullptr;
} else {
mPortSource = &aSource.Value().GetAsMessagePort();
}
}
mPorts.Clear();
mPorts.AppendElements(aPorts);
MessageEventBinding::ClearCachedPortsValue(this);
}
void
MessageEvent::GetPorts(nsTArray<RefPtr<MessagePort>>& aPorts)
{
aPorts = mPorts;
}
} // namespace dom
} // namespace mozilla
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