File: ServiceWorkerRegistration.cpp

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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 "ServiceWorkerRegistration.h"

#include "mozilla/dom/Promise.h"
#include "mozilla/dom/PushManager.h"
#include "mozilla/dom/ServiceWorker.h"
#include "mozilla/dom/ServiceWorkerRegistrationBinding.h"
#include "mozilla/dom/WorkerPrivate.h"
#include "nsCycleCollectionParticipant.h"
#include "nsISupportsPrimitives.h"
#include "nsPIDOMWindow.h"
#include "ServiceWorkerRegistrationImpl.h"

namespace mozilla {
namespace dom {

NS_IMPL_CYCLE_COLLECTION_INHERITED(ServiceWorkerRegistration,
                                   DOMEventTargetHelper, mInstallingWorker,
                                   mWaitingWorker, mActiveWorker, mPushManager);

NS_IMPL_ADDREF_INHERITED(ServiceWorkerRegistration, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(ServiceWorkerRegistration, DOMEventTargetHelper)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ServiceWorkerRegistration)
  NS_INTERFACE_MAP_ENTRY(ServiceWorkerRegistration)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)

ServiceWorkerRegistration::ServiceWorkerRegistration(
    nsIGlobalObject* aGlobal,
    const ServiceWorkerRegistrationDescriptor& aDescriptor,
    ServiceWorkerRegistration::Inner* aInner)
    : DOMEventTargetHelper(aGlobal), mDescriptor(aDescriptor), mInner(aInner) {
  MOZ_DIAGNOSTIC_ASSERT(mInner);
  UpdateState(mDescriptor);
  mInner->SetServiceWorkerRegistration(this);
}

ServiceWorkerRegistration::~ServiceWorkerRegistration() {
  if (mInner) {
    mInner->ClearServiceWorkerRegistration(this);
  }
}

JSObject* ServiceWorkerRegistration::WrapObject(
    JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  return ServiceWorkerRegistrationBinding::Wrap(aCx, this, aGivenProto);
}

/* static */ already_AddRefed<ServiceWorkerRegistration>
ServiceWorkerRegistration::CreateForMainThread(
    nsPIDOMWindowInner* aWindow,
    const ServiceWorkerRegistrationDescriptor& aDescriptor) {
  MOZ_ASSERT(aWindow);
  MOZ_ASSERT(NS_IsMainThread());

  RefPtr<Inner> inner = new ServiceWorkerRegistrationMainThread(aDescriptor);

  RefPtr<ServiceWorkerRegistration> registration =
      new ServiceWorkerRegistration(aWindow->AsGlobal(), aDescriptor, inner);

  return registration.forget();
}

/* static */ already_AddRefed<ServiceWorkerRegistration>
ServiceWorkerRegistration::CreateForWorker(
    WorkerPrivate* aWorkerPrivate, nsIGlobalObject* aGlobal,
    const ServiceWorkerRegistrationDescriptor& aDescriptor) {
  MOZ_DIAGNOSTIC_ASSERT(aWorkerPrivate);
  MOZ_DIAGNOSTIC_ASSERT(aGlobal);
  aWorkerPrivate->AssertIsOnWorkerThread();

  RefPtr<Inner> inner =
      new ServiceWorkerRegistrationWorkerThread(aWorkerPrivate, aDescriptor);

  RefPtr<ServiceWorkerRegistration> registration =
      new ServiceWorkerRegistration(aGlobal, aDescriptor, inner);

  return registration.forget();
}

void ServiceWorkerRegistration::DisconnectFromOwner() {
  mInner->ClearServiceWorkerRegistration(this);
  mInner = nullptr;
  DOMEventTargetHelper::DisconnectFromOwner();
}

already_AddRefed<ServiceWorker> ServiceWorkerRegistration::GetInstalling()
    const {
  RefPtr<ServiceWorker> ref = mInstallingWorker;
  return ref.forget();
}

already_AddRefed<ServiceWorker> ServiceWorkerRegistration::GetWaiting() const {
  RefPtr<ServiceWorker> ref = mWaitingWorker;
  return ref.forget();
}

already_AddRefed<ServiceWorker> ServiceWorkerRegistration::GetActive() const {
  RefPtr<ServiceWorker> ref = mActiveWorker;
  return ref.forget();
}

void ServiceWorkerRegistration::UpdateState(
    const ServiceWorkerRegistrationDescriptor& aDescriptor) {
  MOZ_DIAGNOSTIC_ASSERT(MatchesDescriptor(aDescriptor));

  mDescriptor = aDescriptor;

  nsCOMPtr<nsIGlobalObject> global = GetParentObject();

  // Clear all workers if the registration has been detached from the global.
  // Also, we cannot expose ServiceWorker objects on worker threads yet, so
  // do the same on when off-main-thread.  This main thread check should be
  // removed as part of bug 1113522.
  if (!global || !NS_IsMainThread()) {
    mInstallingWorker = nullptr;
    mWaitingWorker = nullptr;
    mActiveWorker = nullptr;
    return;
  }

  Maybe<ServiceWorkerDescriptor> active = aDescriptor.GetActive();
  if (active.isSome()) {
    mActiveWorker = global->GetOrCreateServiceWorker(active.ref());
  } else {
    mActiveWorker = nullptr;
  }

  Maybe<ServiceWorkerDescriptor> waiting = aDescriptor.GetWaiting();
  if (waiting.isSome()) {
    mWaitingWorker = global->GetOrCreateServiceWorker(waiting.ref());
  } else {
    mWaitingWorker = nullptr;
  }

  Maybe<ServiceWorkerDescriptor> installing = aDescriptor.GetInstalling();
  if (installing.isSome()) {
    mInstallingWorker = global->GetOrCreateServiceWorker(installing.ref());
  } else {
    mInstallingWorker = nullptr;
  }
}

bool ServiceWorkerRegistration::MatchesDescriptor(
    const ServiceWorkerRegistrationDescriptor& aDescriptor) const {
  return aDescriptor.Id() == mDescriptor.Id() &&
         aDescriptor.PrincipalInfo() == mDescriptor.PrincipalInfo() &&
         aDescriptor.Scope() == mDescriptor.Scope();
}

void ServiceWorkerRegistration::GetScope(nsAString& aScope) const {
  CopyUTF8toUTF16(mDescriptor.Scope(), aScope);
}

ServiceWorkerUpdateViaCache ServiceWorkerRegistration::GetUpdateViaCache(
    ErrorResult& aRv) const {
  return mDescriptor.UpdateViaCache();
}

already_AddRefed<Promise> ServiceWorkerRegistration::Update(ErrorResult& aRv) {
  if (!mInner) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }
  return mInner->Update(aRv);
}

already_AddRefed<Promise> ServiceWorkerRegistration::Unregister(
    ErrorResult& aRv) {
  if (!mInner) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }
  return mInner->Unregister(aRv);
}

already_AddRefed<PushManager> ServiceWorkerRegistration::GetPushManager(
    JSContext* aCx, ErrorResult& aRv) {
  if (!mInner) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }
  if (!mPushManager) {
    mPushManager = mInner->GetPushManager(aCx, aRv);
    if (aRv.Failed()) {
      return nullptr;
    }
  }
  RefPtr<PushManager> ret = mPushManager;
  return ret.forget();
}

already_AddRefed<Promise> ServiceWorkerRegistration::ShowNotification(
    JSContext* aCx, const nsAString& aTitle,
    const NotificationOptions& aOptions, ErrorResult& aRv) {
  if (!mInner) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }
  return mInner->ShowNotification(aCx, aTitle, aOptions, aRv);
}

already_AddRefed<Promise> ServiceWorkerRegistration::GetNotifications(
    const GetNotificationOptions& aOptions, ErrorResult& aRv) {
  if (!mInner) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }
  return mInner->GetNotifications(aOptions, aRv);
}

}  // namespace dom
}  // namespace mozilla