зеркало из https://github.com/mozilla/gecko-dev.git
107 строки
3.5 KiB
C++
107 строки
3.5 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_AnimationCollection_h
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#define mozilla_AnimationCollection_h
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#include "mozilla/Assertions.h"
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#include "mozilla/LinkedList.h"
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#include "mozilla/RefPtr.h"
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#include "nsCSSPseudoElements.h"
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#include "nsTArrayForwardDeclare.h"
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class nsAtom;
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class nsIFrame;
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class nsPresContext;
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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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// Traits class to define the specific atoms used when storing specializations
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// of AnimationCollection as a property on an Element (e.g. which atom
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// to use when storing an AnimationCollection<CSSAnimation> for a ::before
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// pseudo-element).
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template <class AnimationType>
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struct AnimationTypeTraits {};
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template <class AnimationType>
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class AnimationCollection
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: public LinkedListElement<AnimationCollection<AnimationType>> {
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typedef AnimationCollection<AnimationType> SelfType;
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typedef AnimationTypeTraits<AnimationType> TraitsType;
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AnimationCollection(dom::Element* aElement, nsAtom* aElementProperty)
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: mElement(aElement), mElementProperty(aElementProperty) {
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MOZ_COUNT_CTOR(AnimationCollection);
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}
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public:
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~AnimationCollection() {
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MOZ_ASSERT(mCalledPropertyDtor,
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"must call destructor through element property dtor");
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MOZ_COUNT_DTOR(AnimationCollection);
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LinkedListElement<SelfType>::remove();
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}
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void Destroy();
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static void PropertyDtor(void* aObject, nsAtom* aPropertyName,
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void* aPropertyValue, void* aData);
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// Get the collection of animations for the given |aElement| and
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// |aPseudoType|.
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static AnimationCollection<AnimationType>* GetAnimationCollection(
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const dom::Element* aElement, PseudoStyleType aPseudoType);
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// Given the frame |aFrame| with possibly animated content, finds its
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// associated collection of animations. If |aFrame| is a generated content
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// frame, this function may examine the parent frame to search for such
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// animations.
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static AnimationCollection<AnimationType>* GetAnimationCollection(
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const nsIFrame* aFrame);
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// Get the collection of animations for the given |aElement| and
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// |aPseudoType| or create it if it does not already exist.
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//
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// We'll set the outparam |aCreatedCollection| to true if we have
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// to create the collection and we successfully do so. Otherwise,
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// we'll set it to false.
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static AnimationCollection<AnimationType>* GetOrCreateAnimationCollection(
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dom::Element* aElement, PseudoStyleType aPseudoType,
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bool* aCreatedCollection);
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dom::Element* mElement;
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// the atom we use in mElement's prop table (must be a static atom,
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// i.e., in an atom list)
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nsAtom* mElementProperty;
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nsTArray<RefPtr<AnimationType>> mAnimations;
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private:
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static nsAtom* GetPropertyAtomForPseudoType(PseudoStyleType aPseudoType);
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// We distinguish between destroying this by calling Destroy() vs directly
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// calling RemoveProperty on an element.
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//
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// The former case represents regular updating due to style changes and should
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// trigger subsequent restyles.
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//
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// The latter case represents document tear-down or other DOM surgery in
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// which case we should not trigger restyles.
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bool mCalledDestroy = false;
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#ifdef DEBUG
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bool mCalledPropertyDtor = false;
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#endif
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};
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} // namespace mozilla
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#endif // mozilla_AnimationCollection_h
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