1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/base/MessagePort.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,113 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef mozilla_dom_MessagePort_h
1.10 +#define mozilla_dom_MessagePort_h
1.11 +
1.12 +#include "mozilla/Attributes.h"
1.13 +#include "mozilla/DOMEventTargetHelper.h"
1.14 +
1.15 +class nsPIDOMWindow;
1.16 +
1.17 +namespace mozilla {
1.18 +namespace dom {
1.19 +
1.20 +class DispatchEventRunnable;
1.21 +class PostMessageRunnable;
1.22 +
1.23 +class MessagePortBase : public DOMEventTargetHelper
1.24 +{
1.25 +protected:
1.26 + MessagePortBase(nsPIDOMWindow* aWindow);
1.27 + MessagePortBase();
1.28 +
1.29 +public:
1.30 +
1.31 + virtual void
1.32 + PostMessageMoz(JSContext* aCx, JS::Handle<JS::Value> aMessage,
1.33 + const Optional<Sequence<JS::Value>>& aTransferable,
1.34 + ErrorResult& aRv) = 0;
1.35 +
1.36 + virtual void
1.37 + Start() = 0;
1.38 +
1.39 + virtual void
1.40 + Close() = 0;
1.41 +
1.42 + // The 'message' event handler has to call |Start()| method, so we
1.43 + // cannot use IMPL_EVENT_HANDLER macro here.
1.44 + virtual EventHandlerNonNull*
1.45 + GetOnmessage() = 0;
1.46 +
1.47 + virtual void
1.48 + SetOnmessage(EventHandlerNonNull* aCallback) = 0;
1.49 +
1.50 + // Duplicate this message port. This method is used by the Structured Clone
1.51 + // Algorithm and makes the new MessagePort active with the entangled
1.52 + // MessagePort of this object.
1.53 + virtual already_AddRefed<MessagePortBase>
1.54 + Clone() = 0;
1.55 +};
1.56 +
1.57 +class MessagePort MOZ_FINAL : public MessagePortBase
1.58 +{
1.59 + friend class DispatchEventRunnable;
1.60 + friend class PostMessageRunnable;
1.61 +
1.62 +public:
1.63 + NS_DECL_ISUPPORTS_INHERITED
1.64 + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MessagePort,
1.65 + DOMEventTargetHelper)
1.66 +
1.67 + MessagePort(nsPIDOMWindow* aWindow);
1.68 + ~MessagePort();
1.69 +
1.70 + virtual JSObject*
1.71 + WrapObject(JSContext* aCx) MOZ_OVERRIDE;
1.72 +
1.73 + virtual void
1.74 + PostMessageMoz(JSContext* aCx, JS::Handle<JS::Value> aMessage,
1.75 + const Optional<Sequence<JS::Value>>& aTransferable,
1.76 + ErrorResult& aRv) MOZ_OVERRIDE;
1.77 +
1.78 + virtual void
1.79 + Start() MOZ_OVERRIDE;
1.80 +
1.81 + virtual void
1.82 + Close() MOZ_OVERRIDE;
1.83 +
1.84 + virtual EventHandlerNonNull*
1.85 + GetOnmessage() MOZ_OVERRIDE;
1.86 +
1.87 + virtual void
1.88 + SetOnmessage(EventHandlerNonNull* aCallback) MOZ_OVERRIDE;
1.89 +
1.90 + // Non WebIDL methods
1.91 +
1.92 + // This method entangles this MessagePort with another one.
1.93 + // If it is already entangled, it's disentangled first and enatangle to the
1.94 + // new one.
1.95 + void
1.96 + Entangle(MessagePort* aMessagePort);
1.97 +
1.98 + virtual already_AddRefed<MessagePortBase>
1.99 + Clone() MOZ_OVERRIDE;
1.100 +
1.101 +private:
1.102 + // Dispatch events from the Message Queue using a nsRunnable.
1.103 + void Dispatch();
1.104 +
1.105 + nsRefPtr<DispatchEventRunnable> mDispatchRunnable;
1.106 +
1.107 + nsRefPtr<MessagePort> mEntangledPort;
1.108 +
1.109 + nsTArray<nsRefPtr<PostMessageRunnable> > mMessageQueue;
1.110 + bool mMessageQueueEnabled;
1.111 +};
1.112 +
1.113 +} // namespace dom
1.114 +} // namespace mozilla
1.115 +
1.116 +#endif // mozilla_dom_MessagePort_h
