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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/. */
#ifndef mozilla_dom_SharedMessageBody_h
#define mozilla_dom_SharedMessageBody_h
#include "mozilla/Maybe.h"
#include "mozilla/dom/ipc/StructuredCloneData.h"
namespace mozilla {
namespace ipc {
class PBackgroundChild;
}
namespace dom {
class MessagePort;
class RefMessageBody;
class RefMessageBodyService;
class SharedMessageBody final {
public:
NS_INLINE_DECL_REFCOUNTING(SharedMessageBody)
SharedMessageBody(
StructuredCloneHolder::TransferringSupport aSupportsTransferring,
const Maybe<nsID>& aAgentClusterId);
enum ReadMethod {
StealRefMessageBody,
KeepRefMessageBody,
};
void Read(JSContext* aCx, JS::MutableHandle<JS::Value> aValue,
RefMessageBodyService* aRefMessageBodyService,
ReadMethod aReadMethod, ErrorResult& aRv);
void Write(JSContext* aCx, JS::Handle<JS::Value> aValue,
JS::Handle<JS::Value> aTransfers, nsID& aPortID,
RefMessageBodyService* aRefMessageBodyService, ErrorResult& aRv);
bool TakeTransferredPortsAsSequence(
Sequence<OwningNonNull<mozilla::dom::MessagePort>>& aPorts);
const Maybe<nsID>& GetRefDataId() const { return mRefDataId; }
private:
friend struct IPC::ParamTraits<mozilla::dom::SharedMessageBody*>;
~SharedMessageBody();
RefPtr<ipc::StructuredCloneData> mCloneData;
RefPtr<RefMessageBody> mRefData;
Maybe<nsID> mRefDataId;
const StructuredCloneHolder::TransferringSupport mSupportsTransferring;
const Maybe<nsID> mAgentClusterId;
};
} // namespace dom
} // namespace mozilla
namespace IPC {
template <>
struct ParamTraits<mozilla::dom::SharedMessageBody*> {
using paramType = mozilla::dom::SharedMessageBody;
static void Write(MessageWriter* aWriter, paramType* aParam);
static bool Read(MessageReader* aReader, RefPtr<paramType>* aResult);
};
} // namespace IPC
#endif // mozilla_dom_SharedMessageBody_h
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