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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_fetcheventopparent_h__
#define mozilla_dom_fetcheventopparent_h__
#include "nsISupports.h"
#include "mozilla/dom/FetchEventOpProxyParent.h"
#include "mozilla/dom/PFetchEventOpParent.h"
namespace mozilla::dom {
class FetchEventOpParent final : public PFetchEventOpParent {
friend class PFetchEventOpParent;
public:
NS_INLINE_DECL_REFCOUNTING(FetchEventOpParent)
FetchEventOpParent() = default;
// Transition from the Pending state to the Started state. Returns the preload
// response and response end args, if it has already arrived.
std::tuple<Maybe<ParentToParentInternalResponse>, Maybe<ResponseEndArgs>>
OnStart(
MovingNotNull<RefPtr<FetchEventOpProxyParent>> aFetchEventOpProxyParent);
// Transition from the Started state to the Finished state.
void OnFinish();
private:
~FetchEventOpParent() = default;
// IPDL methods
mozilla::ipc::IPCResult RecvPreloadResponse(
ParentToParentInternalResponse&& aResponse);
mozilla::ipc::IPCResult RecvPreloadResponseTiming(ResponseTiming&& aTiming);
mozilla::ipc::IPCResult RecvPreloadResponseEnd(ResponseEndArgs&& aArgs);
void ActorDestroy(ActorDestroyReason) override;
struct Pending {
Maybe<ParentToParentInternalResponse> mPreloadResponse;
Maybe<ResponseTiming> mTiming;
Maybe<ResponseEndArgs> mEndArgs;
};
struct Started {
NotNull<RefPtr<FetchEventOpProxyParent>> mFetchEventOpProxyParent;
};
struct Finished {};
using State = Variant<Pending, Started, Finished>;
// Tracks the state of the fetch event.
//
// Pending: the fetch event is waiting in RemoteWorkerController::mPendingOps
// and if the preload response arrives, we have to save it.
// Started: the FetchEventOpProxyParent has been created, and if the preload
// response arrives then we should forward it.
// Finished: the response has been propagated to the parent process, if the
// preload response arrives now then we simply drop it.
State mState = AsVariant(Pending());
};
} // namespace mozilla::dom
#endif // mozilla_dom_fetcheventopparent_h__
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