The Tor Browser: dom/workers/MessagePort.h@925c144e1f1f

     1 /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     4  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef mozilla_dom_workers_messageport_h_

     7 #define mozilla_dom_workers_messageport_h_

     9 #include "Workers.h"

    11 #include "mozilla/DOMEventTargetHelper.h"

    12 #include "mozilla/dom/BindingDeclarations.h"

    13 #include "mozilla/dom/MessagePort.h"

    15 class nsIDOMEvent;

    16 class nsPIDOMWindow;

    18 namespace mozilla {

    19 class EventChainPreVisitor;

    20 } // namespace mozilla

    22 BEGIN_WORKERS_NAMESPACE

    24 class SharedWorker;

    25 class WorkerPrivate;

    27 class MessagePort MOZ_FINAL : public mozilla::dom::MessagePortBase

    28 {

    29   friend class SharedWorker;

    30   friend class WorkerPrivate;

    32   typedef mozilla::ErrorResult ErrorResult;

    34   nsRefPtr<SharedWorker> mSharedWorker;

    35   WorkerPrivate* mWorkerPrivate;

    36   nsTArray<nsCOMPtr<nsIDOMEvent>> mQueuedEvents;

    37   uint64_t mSerial;

    38   bool mStarted;

    40 public:

    41   static bool

    42   PrefEnabled();

    44   virtual void

    45   PostMessageMoz(JSContext* aCx, JS::Handle<JS::Value> aMessage,

    46                  const Optional<Sequence<JS::Value>>& aTransferable,

    47                  ErrorResult& aRv) MOZ_OVERRIDE;

    49   virtual void

    50   Start() MOZ_OVERRIDE;

    52   virtual void

    53   Close() MOZ_OVERRIDE;

    55   uint64_t

    56   Serial() const

    57   {

    58     return mSerial;

    59   }

    61   void

    62   QueueEvent(nsIDOMEvent* aEvent);

    64   NS_DECL_ISUPPORTS_INHERITED

    65   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MessagePort, DOMEventTargetHelper)

    67   virtual EventHandlerNonNull*

    68   GetOnmessage() MOZ_OVERRIDE;

    70   virtual void

    71   SetOnmessage(EventHandlerNonNull* aCallback) MOZ_OVERRIDE;

    73   virtual already_AddRefed<MessagePortBase>

    74   Clone() MOZ_OVERRIDE;

    76   bool

    77   IsClosed() const

    78   {

    79     return !mSharedWorker && !mWorkerPrivate;

    80   }

    82   virtual JSObject*

    83   WrapObject(JSContext* aCx) MOZ_OVERRIDE;

    85   virtual nsresult

    86   PreHandleEvent(EventChainPreVisitor& aVisitor) MOZ_OVERRIDE;

    88 #ifdef DEBUG

    89   void

    90   AssertCorrectThread() const;

    91 #else

    92   void

    93   AssertCorrectThread() const { }

    94 #endif

    96 private:

    97   // This class can only be created by SharedWorker or WorkerPrivate.

    98   MessagePort(nsPIDOMWindow* aWindow, SharedWorker* aSharedWorker,

    99               uint64_t aSerial);

   100   MessagePort(WorkerPrivate* aWorkerPrivate, uint64_t aSerial);

   102   // This class is reference-counted and will be destroyed from Release().

   103   ~MessagePort();

   105   void

   106   CloseInternal();

   107 };

   109 END_WORKERS_NAMESPACE

   111 #endif // mozilla_dom_workers_messageport_h_

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