dom/base/DispatcherTrait.h
author Simon Whitehead <chemnova@gmail.com>
Sat, 13 May 2017 15:12:15 -0500
changeset 358329 633151f5d481d49bd39900d43e6a75d77459a7bb
parent 342589 1021af9fea0035f26e71723905f115bbd64fd099
child 364232 8408c88a471ca55dc914098ded86e9ffaacff7a3
permissions -rw-r--r--
servo: Merge #16829 - Disallow negative duration for animation and transition (from hiikezoe:disallow-negative-duration); r=emilio <!-- Please describe your changes on the following line: --> --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #15343 <!-- Either: --> - [X] There are tests for these changes written by @simon-whitehead . Thank you! <!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.--> <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> Source-Repo: https://github.com/servo/servo Source-Revision: 4613c0382ab76263fb8202ccf52f4c0520e44809

/* -*- 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"

class nsIEventTarget;
class nsIRunnable;

namespace mozilla {
class AbstractThread;
namespace dom {
class TabGroup;

// This trait should be attached to classes like nsIGlobalObject and nsIDocument
// that have a DocGroup or TabGroup attached to them. The methods here should
// delegate to the DocGroup or TabGroup. 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 nsIDocument
  // it is safe. For nsIGlobalWindow it is not safe.
  virtual nsresult Dispatch(const char* aName,
                            TaskCategory aCategory,
                            already_AddRefed<nsIRunnable>&& aRunnable);

  // This method may or may not be safe off of the main thread. For nsIDocument
  // it is safe. For nsIGlobalWindow it is not safe. The nsIEventTarget can
  // always be used off the main thread.
  virtual nsIEventTarget* 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