зеркало из https://github.com/mozilla/gecko-dev.git
70 строки
2.1 KiB
C++
70 строки
2.1 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_TimelineCollection_h
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#define mozilla_TimelineCollection_h
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#include "mozilla/Assertions.h"
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#include "mozilla/LinkedList.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/RefPtr.h"
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#include "nsTHashMap.h"
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class nsAtom;
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namespace mozilla {
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namespace dom {
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class Element;
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}
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enum class PseudoStyleType : uint8_t;
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// The collection of ScrollTimeline or ViewTimeline. We use the template class
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// to share the implementation for these two timeline types.
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template <class TimelineType>
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class TimelineCollection final
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: public LinkedListElement<TimelineCollection<TimelineType>> {
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public:
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using SelfType = TimelineCollection<TimelineType>;
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using TimelineMap =
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nsTHashMap<nsRefPtrHashKey<const nsAtom>, RefPtr<TimelineType>>;
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TimelineCollection(dom::Element& aElement, PseudoStyleType aPseudoType)
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: mElement(aElement), mPseudo(aPseudoType) {
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MOZ_COUNT_CTOR(TimelineCollection);
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}
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~TimelineCollection();
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already_AddRefed<TimelineType> Lookup(const nsAtom* aName) const {
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return mTimelines.Get(aName).forget();
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}
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already_AddRefed<TimelineType> Extract(const nsAtom* aName) {
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Maybe<RefPtr<TimelineType>> timeline = mTimelines.Extract(aName);
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return timeline ? timeline->forget() : nullptr;
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}
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void Swap(TimelineMap& aValue) { mTimelines.SwapElements(aValue); }
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void Destroy();
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// Get the collection of timelines for the given |aElement| and or create it
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// if it does not already exist.
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static TimelineCollection* Get(const dom::Element* aElement,
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PseudoStyleType aPseudoType);
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private:
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// The element. Weak reference is fine since it owns us.
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dom::Element& mElement;
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const PseudoStyleType mPseudo;
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TimelineMap mTimelines;
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};
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} // namespace mozilla
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#endif // mozilla_TimelineCollection_h
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