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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/. */
#ifndef mozilla_dom_DispatcherTrait_h
#define mozilla_dom_DispatcherTrait_h
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/TaskCategory.h"
#include "ErrorList.h"
class nsIRunnable;
class nsISerialEventTarget;
namespace mozilla {
class AbstractThread;
namespace dom {
// This trait should be attached to classes like nsIGlobalObject and
// Document that have a DocGroup attached to them. The methods here
// should delegate to the DocGroup. We can't use the
// Dispatcher class directly because it inherits from nsISupports.
class DispatcherTrait {
public:
// This method may or may not be safe off of the main thread. For Document it
// is safe. For nsIGlobalWindow it is not safe.
virtual nsresult Dispatch(TaskCategory aCategory,
already_AddRefed<nsIRunnable>&& aRunnable);
// This method may or may not be safe off of the main thread. For Document it
// is safe. For nsIGlobalWindow it is not safe. The nsISerialEventTarget can
// always be used off the main thread.
virtual nsISerialEventTarget* EventTargetFor(TaskCategory aCategory) const;
// Must be called on the main thread. The AbstractThread can always be used
// off the main thread.
virtual AbstractThread* AbstractMainThreadFor(TaskCategory aCategory);
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_DispatcherTrait_h
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