author Geoff Brown <>
Fri, 12 Apr 2019 00:17:45 +0000
changeset 469254 2e0165dcfdb1c104551d75c5ff4833cd064e6405
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1543323 - On Android, only build gtest tests archive on x86_64 builds; r=glandium We only plan to run Android gtest in continuous integration on x86_64. Given the impact on build times, I think it best to limit the gtest archive builds to the variants where we will use it. Differential Revision:

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 */

#ifndef mozilla_image_IProgressObserver_h
#define mozilla_image_IProgressObserver_h

#include "mozilla/WeakPtr.h"
#include "nsISupports.h"
#include "nsRect.h"

class nsIEventTarget;

namespace mozilla {
namespace image {

 * An interface for observing changes to image state, as reported by
 * ProgressTracker.
 * This is the ImageLib-internal version of imgINotificationObserver,
 * essentially, with implementation details that code outside of ImageLib
 * shouldn't see.
 * XXX(seth): It's preferable to avoid adding anything to this interface if
 * possible.  In the long term, it would be ideal to get to a place where we can
 * just use the imgINotificationObserver interface internally as well.
class IProgressObserver : public SupportsWeakPtr<IProgressObserver> {

  // Subclasses may or may not be XPCOM classes, so we just require that they
  // implement AddRef and Release.

  // imgINotificationObserver methods:
  virtual void Notify(int32_t aType, const nsIntRect* aRect = nullptr) = 0;
  virtual void OnLoadComplete(bool aLastPart) = 0;

  // Other, internal-only methods:
  virtual void SetHasImage() = 0;
  virtual bool NotificationsDeferred() const = 0;
  virtual void MarkPendingNotify() = 0;
  virtual void ClearPendingNotify() = 0;

  virtual already_AddRefed<nsIEventTarget> GetEventTarget() const {
    return nullptr;

  virtual ~IProgressObserver() {}

}  // namespace image
}  // namespace mozilla

#endif  // mozilla_image_IProgressObserver_h