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