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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_serviceworkerop_h__
#define mozilla_dom_serviceworkerop_h__
#include <functional>
#include "nsISupportsImpl.h"
#include "ServiceWorkerEvents.h"
#include "ServiceWorkerOpPromise.h"
#include "mozilla/Attributes.h"
#include "mozilla/Maybe.h"
#include "mozilla/RefPtr.h"
#include "mozilla/dom/PromiseNativeHandler.h"
#include "mozilla/dom/RemoteWorkerChild.h"
#include "mozilla/dom/ServiceWorkerOpArgs.h"
#include "mozilla/dom/WorkerRunnable.h"
namespace mozilla {
namespace dom {
class FetchEventOpProxyChild;
class ServiceWorkerOp : public RemoteWorkerChild::Op {
public:
// `aCallback` will be called when the operation completes or is canceled.
static already_AddRefed<ServiceWorkerOp> Create(
ServiceWorkerOpArgs&& aArgs,
std::function<void(const ServiceWorkerOpResult&)>&& aCallback);
ServiceWorkerOp(
ServiceWorkerOpArgs&& aArgs,
std::function<void(const ServiceWorkerOpResult&)>&& aCallback);
ServiceWorkerOp(const ServiceWorkerOp&) = delete;
ServiceWorkerOp& operator=(const ServiceWorkerOp&) = delete;
ServiceWorkerOp(ServiceWorkerOp&&) = default;
ServiceWorkerOp& operator=(ServiceWorkerOp&&) = default;
// Returns `true` if the operation has started and `false` otherwise.
bool MaybeStart(RemoteWorkerChild* aOwner,
RemoteWorkerChild::State& aState) final;
void Cancel() final;
protected:
~ServiceWorkerOp();
bool Started() const;
bool IsTerminationOp() const;
// Override to provide a runnable that's not a `ServiceWorkerOpRunnable.`
virtual RefPtr<WorkerRunnable> GetRunnable(WorkerPrivate* aWorkerPrivate);
virtual bool Exec(JSContext* aCx, WorkerPrivate* aWorkerPrivate) = 0;
// Override to reject any additional MozPromises that subclasses may contain.
virtual void RejectAll(nsresult aStatus);
ServiceWorkerOpArgs mArgs;
// Subclasses must settle this promise when appropriate.
MozPromiseHolder<ServiceWorkerOpPromise> mPromiseHolder;
private:
class ServiceWorkerOpRunnable;
bool mStarted = false;
};
class ExtendableEventOp : public ServiceWorkerOp,
public ExtendableEventCallback {
using ServiceWorkerOp::ServiceWorkerOp;
protected:
~ExtendableEventOp() = default;
void FinishedWithResult(ExtendableEventResult aResult) override;
};
class FetchEventOp final : public ExtendableEventOp,
public PromiseNativeHandler {
using ExtendableEventOp::ExtendableEventOp;
public:
NS_DECL_THREADSAFE_ISUPPORTS
/**
* This must be called once and only once before the first call to
* `MaybeStart()`; `aActor` will be used for `AsyncLog()` and
* `ReportCanceled().`
*/
void SetActor(RefPtr<FetchEventOpProxyChild> aActor);
void RevokeActor(FetchEventOpProxyChild* aActor);
// This must be called at most once before the first call to `MaybeStart().`
RefPtr<FetchEventRespondWithPromise> GetRespondWithPromise();
// This must be called when `FetchEvent::RespondWith()` is called.
void RespondWithCalledAt(const nsCString& aRespondWithScriptSpec,
uint32_t aRespondWithLineNumber,
uint32_t aRespondWithColumnNumber);
void ReportCanceled(const nsCString& aPreventDefaultScriptSpec,
uint32_t aPreventDefaultLineNumber,
uint32_t aPreventDefaultColumnNumber);
private:
class AutoCancel;
~FetchEventOp();
bool Exec(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override;
void RejectAll(nsresult aStatus) override;
void FinishedWithResult(ExtendableEventResult aResult) override;
/**
* `{Resolved,Reject}Callback()` are use to handle the
* `FetchEvent::RespondWith()` promise.
*/
void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;
void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;
void MaybeFinished();
// Requires mRespondWithClosure to be non-empty.
void AsyncLog(const nsCString& aMessageName, nsTArray<nsString> aParams);
void AsyncLog(const nsCString& aScriptSpec, uint32_t aLineNumber,
uint32_t aColumnNumber, const nsCString& aMessageName,
nsTArray<nsString> aParams);
void GetRequestURL(nsAString& aOutRequestURL);
// A failure code means that the dispatch failed.
nsresult DispatchFetchEvent(JSContext* aCx, WorkerPrivate* aWorkerPrivate);
// Worker Launcher thread only. Used for `AsyncLog().`
RefPtr<FetchEventOpProxyChild> mActor;
/**
* Created on the Worker Launcher thread and settled on the worker thread.
* If this isn't settled before `mPromiseHolder` (which it should be),
* `FetchEventOpChild` will cancel the intercepted network request.
*/
MozPromiseHolder<FetchEventRespondWithPromise> mRespondWithPromiseHolder;
// Worker thread only.
Maybe<ExtendableEventResult> mResult;
bool mPostDispatchChecksDone = false;
// Worker thread only; set when `FetchEvent::RespondWith()` is called.
Maybe<FetchEventRespondWithClosure> mRespondWithClosure;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_serviceworkerop_h__