The Tor Browser / file comparison
comparison: dom/base/MessagePort.h
dom/base/MessagePort.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 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 | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef mozilla_dom_MessagePort_h | |
| 7 #define mozilla_dom_MessagePort_h | |
| 8 | |
| 9 #include "mozilla/Attributes.h" | |
| 10 #include "mozilla/DOMEventTargetHelper.h" | |
| 11 | |
| 12 class nsPIDOMWindow; | |
| 13 | |
| 14 namespace mozilla { | |
| 15 namespace dom { | |
| 16 | |
| 17 class DispatchEventRunnable; | |
| 18 class PostMessageRunnable; | |
| 19 | |
| 20 class MessagePortBase : public DOMEventTargetHelper | |
| 21 { | |
| 22 protected: | |
| 23 MessagePortBase(nsPIDOMWindow* aWindow); | |
| 24 MessagePortBase(); | |
| 25 | |
| 26 public: | |
| 27 | |
| 28 virtual void | |
| 29 PostMessageMoz(JSContext* aCx, JS::Handle<JS::Value> aMessage, | |
| 30 const Optional<Sequence<JS::Value>>& aTransferable, | |
| 31 ErrorResult& aRv) = 0; | |
| 32 | |
| 33 virtual void | |
| 34 Start() = 0; | |
| 35 | |
| 36 virtual void | |
| 37 Close() = 0; | |
| 38 | |
| 39 // The 'message' event handler has to call |Start()| method, so we | |
| 40 // cannot use IMPL_EVENT_HANDLER macro here. | |
| 41 virtual EventHandlerNonNull* | |
| 42 GetOnmessage() = 0; | |
| 43 | |
| 44 virtual void | |
| 45 SetOnmessage(EventHandlerNonNull* aCallback) = 0; | |
| 46 | |
| 47 // Duplicate this message port. This method is used by the Structured Clone | |
| 48 // Algorithm and makes the new MessagePort active with the entangled | |
| 49 // MessagePort of this object. | |
| 50 virtual already_AddRefed<MessagePortBase> | |
| 51 Clone() = 0; | |
| 52 }; | |
| 53 | |
| 54 class MessagePort MOZ_FINAL : public MessagePortBase | |
| 55 { | |
| 56 friend class DispatchEventRunnable; | |
| 57 friend class PostMessageRunnable; | |
| 58 | |
| 59 public: | |
| 60 NS_DECL_ISUPPORTS_INHERITED | |
| 61 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MessagePort, | |
| 62 DOMEventTargetHelper) | |
| 63 | |
| 64 MessagePort(nsPIDOMWindow* aWindow); | |
| 65 ~MessagePort(); | |
| 66 | |
| 67 virtual JSObject* | |
| 68 WrapObject(JSContext* aCx) MOZ_OVERRIDE; | |
| 69 | |
| 70 virtual void | |
| 71 PostMessageMoz(JSContext* aCx, JS::Handle<JS::Value> aMessage, | |
| 72 const Optional<Sequence<JS::Value>>& aTransferable, | |
| 73 ErrorResult& aRv) MOZ_OVERRIDE; | |
| 74 | |
| 75 virtual void | |
| 76 Start() MOZ_OVERRIDE; | |
| 77 | |
| 78 virtual void | |
| 79 Close() MOZ_OVERRIDE; | |
| 80 | |
| 81 virtual EventHandlerNonNull* | |
| 82 GetOnmessage() MOZ_OVERRIDE; | |
| 83 | |
| 84 virtual void | |
| 85 SetOnmessage(EventHandlerNonNull* aCallback) MOZ_OVERRIDE; | |
| 86 | |
| 87 // Non WebIDL methods | |
| 88 | |
| 89 // This method entangles this MessagePort with another one. | |
| 90 // If it is already entangled, it's disentangled first and enatangle to the | |
| 91 // new one. | |
| 92 void | |
| 93 Entangle(MessagePort* aMessagePort); | |
| 94 | |
| 95 virtual already_AddRefed<MessagePortBase> | |
| 96 Clone() MOZ_OVERRIDE; | |
| 97 | |
| 98 private: | |
| 99 // Dispatch events from the Message Queue using a nsRunnable. | |
| 100 void Dispatch(); | |
| 101 | |
| 102 nsRefPtr<DispatchEventRunnable> mDispatchRunnable; | |
| 103 | |
| 104 nsRefPtr<MessagePort> mEntangledPort; | |
| 105 | |
| 106 nsTArray<nsRefPtr<PostMessageRunnable> > mMessageQueue; | |
| 107 bool mMessageQueueEnabled; | |
| 108 }; | |
| 109 | |
| 110 } // namespace dom | |
| 111 } // namespace mozilla | |
| 112 | |
| 113 #endif // mozilla_dom_MessagePort_h |
