gecko-dev/dom/workers/ServiceWorker.cpp

131 строка
3.8 KiB
C++

/* -*- 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 "ServiceWorker.h"
#include "nsPIDOMWindow.h"
#include "ServiceWorkerClient.h"
#include "ServiceWorkerManager.h"
#include "SharedWorker.h"
#include "WorkerPrivate.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/ServiceWorkerGlobalScopeBinding.h"
#ifdef XP_WIN
#undef PostMessage
#endif
using mozilla::ErrorResult;
using namespace mozilla::dom;
namespace mozilla {
namespace dom {
namespace workers {
bool
ServiceWorkerVisible(JSContext* aCx, JSObject* aObj)
{
if (NS_IsMainThread()) {
return Preferences::GetBool("dom.serviceWorkers.enabled", false);
}
ServiceWorkerGlobalScope* scope = nullptr;
nsresult rv = UnwrapObject<prototypes::id::ServiceWorkerGlobalScope_workers,
mozilla::dom::ServiceWorkerGlobalScopeBinding_workers::NativeType>(aObj, scope);
return NS_SUCCEEDED(rv);
}
ServiceWorker::ServiceWorker(nsPIDOMWindow* aWindow,
ServiceWorkerInfo* aInfo,
SharedWorker* aSharedWorker)
: DOMEventTargetHelper(aWindow),
mInfo(aInfo),
mSharedWorker(aSharedWorker)
{
AssertIsOnMainThread();
MOZ_ASSERT(aInfo);
MOZ_ASSERT(mSharedWorker);
// This will update our state too.
mInfo->AppendWorker(this);
}
ServiceWorker::~ServiceWorker()
{
AssertIsOnMainThread();
mInfo->RemoveWorker(this);
}
NS_IMPL_ADDREF_INHERITED(ServiceWorker, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(ServiceWorker, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(ServiceWorker)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_INHERITED(ServiceWorker, DOMEventTargetHelper,
mSharedWorker)
JSObject*
ServiceWorker::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
AssertIsOnMainThread();
return ServiceWorkerBinding::Wrap(aCx, this, aGivenProto);
}
void
ServiceWorker::GetScriptURL(nsString& aURL) const
{
CopyUTF8toUTF16(mInfo->ScriptSpec(), aURL);
}
void
ServiceWorker::PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
const Optional<Sequence<JS::Value>>& aTransferable,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivate();
MOZ_ASSERT(workerPrivate);
if (State() == ServiceWorkerState::Redundant) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(GetParentObject());
nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
nsAutoPtr<ServiceWorkerClientInfo> clientInfo(new ServiceWorkerClientInfo(doc));
workerPrivate->PostMessageToServiceWorker(aCx, aMessage, aTransferable,
clientInfo, aRv);
}
WorkerPrivate*
ServiceWorker::GetWorkerPrivate() const
{
// At some point in the future, this may be optimized to terminate a worker
// that hasn't been used in a certain amount of time or when there is memory
// pressure or similar.
MOZ_ASSERT(mSharedWorker);
return mSharedWorker->GetWorkerPrivate();
}
void
ServiceWorker::QueueStateChangeEvent(ServiceWorkerState aState)
{
nsCOMPtr<nsIRunnable> r =
NS_NewRunnableMethodWithArg<ServiceWorkerState>(this,
&ServiceWorker::DispatchStateChange,
aState);
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(NS_DispatchToMainThread(r)));
}
} // namespace workers
} // namespace dom
} // namespace mozilla