/* -*- 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_ScrollTimelineAnimationTracker_h
#define mozilla_ScrollTimelineAnimationTracker_h
#include "mozilla/dom/Animation.h"
#include "nsCycleCollectionParticipant.h"
#include "nsTHashSet.h"
namespace mozilla {
namespace dom {
class Document;
}
/**
* Handle the pending animations which use scroll timeline while playing or
* pausing.
*/
class ScrollTimelineAnimationTracker final {
public:
explicit ScrollTimelineAnimationTracker(dom::Document* aDocument)
: mDocument(aDocument) {}
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(
ScrollTimelineAnimationTracker)
NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(ScrollTimelineAnimationTracker)
void AddPending(dom::Animation& aAnimation) {
mPendingSet.Insert(&aAnimation);
}
void RemovePending(dom::Animation& aAnimation) {
mPendingSet.Remove(&aAnimation);
}
bool HasPendingAnimations()
const {
return mPendingSet.Count() > 0; }
bool IsWaiting(
const dom::Animation& aAnimation)
const {
return mPendingSet.Contains(
const_cast<dom::Animation*>(&aAnimation));
}
void TriggerPendingAnimations();
private:
~ScrollTimelineAnimationTracker() =
default;
nsTHashSet<nsRefPtrHashKey<dom::Animation>> mPendingSet;
RefPtr<dom::Document> mDocument;
};
}
// namespace mozilla
#endif // mozilla_ScrollTimelineAnimationTracker_h
