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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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91
dom/messagechannel/MessageChannel.cpp Normal file
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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 "MessageChannel.h"
#include "mozilla/dom/MessageChannelBinding.h"
#include "mozilla/dom/MessagePort.h"
#include "mozilla/dom/Navigator.h"
#include "mozilla/dom/WorkerPrivate.h"
#include "mozilla/dom/WorkerRunnable.h"
#include "nsContentUtils.h"
#include "nsIDocument.h"
#include "nsIGlobalObject.h"
#include "nsIPrincipal.h"
#include "nsServiceManagerUtils.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(MessageChannel, mGlobal, mPort1, mPort2)
NS_IMPL_CYCLE_COLLECTING_ADDREF(MessageChannel)
NS_IMPL_CYCLE_COLLECTING_RELEASE(MessageChannel)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MessageChannel)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
MessageChannel::MessageChannel(nsIGlobalObject* aGlobal)
: mGlobal(aGlobal)
{
MOZ_ASSERT(aGlobal);
}
MessageChannel::~MessageChannel()
{
}
JSObject*
MessageChannel::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return MessageChannelBinding::Wrap(aCx, this, aGivenProto);
}
/* static */ already_AddRefed<MessageChannel>
MessageChannel::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
return Constructor(global, aRv);
}
/* static */ already_AddRefed<MessageChannel>
MessageChannel::Constructor(nsIGlobalObject* aGlobal, ErrorResult& aRv)
{
MOZ_ASSERT(aGlobal);
nsID portUUID1;
aRv = nsContentUtils::GenerateUUIDInPlace(portUUID1);
if (aRv.Failed()) {
return nullptr;
}
nsID portUUID2;
aRv = nsContentUtils::GenerateUUIDInPlace(portUUID2);
if (aRv.Failed()) {
return nullptr;
}
RefPtr<MessageChannel> channel = new MessageChannel(aGlobal);
channel->mPort1 = MessagePort::Create(aGlobal, portUUID1, portUUID2, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
channel->mPort2 = MessagePort::Create(aGlobal, portUUID2, portUUID1, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
channel->mPort1->UnshippedEntangle(channel->mPort2);
channel->mPort2->UnshippedEntangle(channel->mPort1);
return channel.forget();
}
} // namespace dom
} // namespace mozilla