David Shin
8b4c08cb8f
Timelines must do loosely scoped name matching. We store the full context for doing the matching in Animation, which doesn't change unless the animation target updates. Differential Revision: https://phabricator.services.mozilla.com/D312590
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/* 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/LinkedList.h"
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#include "mozilla/PseudoStyleRequest.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/dom/TimelineName.h"
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#include "nsAtomHashKeys.h"
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#include "nsStyleConsts.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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template <class TimelineType>
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struct TimelineEntry {
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RefPtr<TimelineType> mTimeline = {};
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StyleCascadeLevel mCascadeLevel = {};
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};
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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<RefPtr<const nsAtom>, TimelineEntry<TimelineType>>;
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TimelineCollection(dom::Element& aElement,
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const PseudoStyleRequest& aPseudoRequest)
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: mElement(aElement), mPseudo(aPseudoRequest) {
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MOZ_COUNT_CTOR(TimelineCollection);
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}
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~TimelineCollection();
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TimelineEntry<TimelineType> Lookup(const nsAtom* aName) const {
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auto entry = mTimelines.MaybeGet(aName);
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if (!entry) {
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return {};
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}
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return *entry;
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}
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already_AddRefed<TimelineType> Extract(const nsAtom* aName) {
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auto entry = mTimelines.Extract(aName);
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if (!entry) {
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return nullptr;
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}
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// We're about to replace this entry, don't care about cascade level.
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return entry->mTimeline.forget();
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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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const PseudoStyleRequest& aPseudoRequest);
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const TimelineMap& Timelines() const { return mTimelines; }
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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 PseudoStyleRequest 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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