зеркало из https://github.com/mozilla/gecko-dev.git
113 строки
2.5 KiB
C++
113 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_workers_messageport_h_
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#define mozilla_dom_workers_messageport_h_
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#include "mozilla/dom/workers/Workers.h"
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/MessagePort.h"
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class nsIDOMEvent;
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class nsPIDOMWindow;
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namespace mozilla {
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class EventChainPreVisitor;
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} // namespace mozilla
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BEGIN_WORKERS_NAMESPACE
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class SharedWorker;
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class WorkerPrivate;
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class MessagePort final : public mozilla::dom::MessagePortBase
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{
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friend class SharedWorker;
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friend class WorkerPrivate;
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typedef mozilla::ErrorResult ErrorResult;
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nsRefPtr<SharedWorker> mSharedWorker;
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WorkerPrivate* mWorkerPrivate;
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nsTArray<nsCOMPtr<nsIDOMEvent>> mQueuedEvents;
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uint64_t mSerial;
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bool mStarted;
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public:
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static bool
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PrefEnabled();
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virtual void
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PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
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const Optional<Sequence<JS::Value>>& aTransferable,
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ErrorResult& aRv) override;
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virtual void
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Start() override;
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virtual void
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Close() override;
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uint64_t
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Serial() const
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{
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return mSerial;
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}
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void
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QueueEvent(nsIDOMEvent* aEvent);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MessagePort, DOMEventTargetHelper)
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virtual EventHandlerNonNull*
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GetOnmessage() override;
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virtual void
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SetOnmessage(EventHandlerNonNull* aCallback) override;
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virtual bool
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CloneAndDisentangle(MessagePortIdentifier& aIdentifier) override;
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bool
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IsClosed() const
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{
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return !mSharedWorker && !mWorkerPrivate;
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}
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virtual JSObject*
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WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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virtual nsresult
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PreHandleEvent(EventChainPreVisitor& aVisitor) override;
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#ifdef DEBUG
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void
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AssertCorrectThread() const;
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#else
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void
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AssertCorrectThread() const { }
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#endif
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private:
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// This class can only be created by SharedWorker or WorkerPrivate.
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MessagePort(nsPIDOMWindow* aWindow, SharedWorker* aSharedWorker,
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uint64_t aSerial);
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MessagePort(WorkerPrivate* aWorkerPrivate, uint64_t aSerial);
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// This class is reference-counted and will be destroyed from Release().
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~MessagePort();
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void
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CloseInternal();
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};
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END_WORKERS_NAMESPACE
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#endif // mozilla_dom_workers_messageport_h_
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