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065446fdcd
By moving GetAnimationCollection to AnimationCollection itself, we can remove a bunch of virtual methods on the animation managers, simplify call sites, and provide better type safety by ensuring a correspondence between element property names and concrete animation types. One change in behavior, however, is that in doing this we can no longer add any newly-created AnimationCollection to the corresponding manager's linked list of collections inside GetAnimationCollection. Instead we take a bool outparam to indicate if a new collection was created and leave managing the linked list to the manager. This is just a temporary measure, however, since by the end of this patch series will will eliminate this linked list altogether along with this flag. MozReview-Commit-ID: 1jsc4QcmVDg
153 lines
4.9 KiB
C++
153 lines
4.9 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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#include "mozilla/AnimationCollection.h"
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#include "mozilla/RestyleManagerHandle.h"
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#include "mozilla/RestyleManagerHandleInlines.h"
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#include "nsAnimationManager.h" // For dom::CSSAnimation
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#include "nsPresContext.h"
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#include "nsTransitionManager.h" // For dom::CSSTransition
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namespace mozilla {
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template <class AnimationType>
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/* static */ void
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AnimationCollection<AnimationType>::PropertyDtor(void* aObject,
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nsIAtom* aPropertyName,
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void* aPropertyValue,
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void* aData)
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{
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AnimationCollection* collection =
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static_cast<AnimationCollection*>(aPropertyValue);
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#ifdef DEBUG
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MOZ_ASSERT(!collection->mCalledPropertyDtor, "can't call dtor twice");
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collection->mCalledPropertyDtor = true;
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#endif
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{
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nsAutoAnimationMutationBatch mb(collection->mElement->OwnerDoc());
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for (size_t animIdx = collection->mAnimations.Length(); animIdx-- != 0; ) {
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collection->mAnimations[animIdx]->CancelFromStyle();
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}
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}
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delete collection;
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}
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template <class AnimationType>
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/* static */ AnimationCollection<AnimationType>*
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AnimationCollection<AnimationType>::GetAnimationCollection(
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dom::Element *aElement,
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CSSPseudoElementType aPseudoType,
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bool aCreateIfNeeded,
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bool* aCreatedCollection)
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{
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if (aCreatedCollection) {
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*aCreatedCollection = false;
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}
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if (!aCreateIfNeeded && !aElement->MayHaveAnimations()) {
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// Early return for the most common case.
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return nullptr;
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}
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nsIAtom *propName;
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if (aPseudoType == CSSPseudoElementType::NotPseudo) {
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propName = TraitsType::ElementPropertyAtom();
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} else if (aPseudoType == CSSPseudoElementType::before) {
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propName = TraitsType::BeforePropertyAtom();
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} else if (aPseudoType == CSSPseudoElementType::after) {
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propName = TraitsType::AfterPropertyAtom();
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} else {
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NS_ASSERTION(!aCreateIfNeeded,
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"should never try to create transitions for pseudo "
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"other than :before or :after");
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return nullptr;
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}
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auto collection = static_cast<AnimationCollection<AnimationType>*>(
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aElement->GetProperty(propName));
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if (!collection && aCreateIfNeeded) {
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// FIXME: Consider arena-allocating?
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collection = new AnimationCollection<AnimationType>(aElement, propName);
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nsresult rv =
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aElement->SetProperty(propName, collection,
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&AnimationCollection<AnimationType>::PropertyDtor,
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false);
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if (NS_FAILED(rv)) {
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NS_WARNING("SetProperty failed");
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// The collection must be destroyed via PropertyDtor, otherwise
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// mCalledPropertyDtor assertion is triggered in destructor.
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AnimationCollection<AnimationType>::PropertyDtor(aElement, propName,
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collection, nullptr);
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return nullptr;
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}
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if (aCreatedCollection) {
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*aCreatedCollection = true;
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}
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aElement->SetMayHaveAnimations();
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}
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return collection;
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}
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template <class AnimationType>
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/* static */ AnimationCollection<AnimationType>*
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AnimationCollection<AnimationType>::GetAnimationCollection(
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const nsIFrame* aFrame)
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{
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Maybe<Pair<dom::Element*, CSSPseudoElementType>> pseudoElement =
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EffectCompositor::GetAnimationElementAndPseudoForFrame(aFrame);
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if (!pseudoElement) {
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return nullptr;
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}
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if (!pseudoElement->first()->MayHaveAnimations()) {
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return nullptr;
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}
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return GetAnimationCollection(pseudoElement->first(),
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pseudoElement->second(),
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false /* aCreateIfNeeded */);
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}
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template <class AnimationType>
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/* static */ nsString
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AnimationCollection<AnimationType>::PseudoTypeAsString(
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CSSPseudoElementType aPseudoType)
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{
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switch (aPseudoType) {
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case CSSPseudoElementType::before:
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return NS_LITERAL_STRING("::before");
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case CSSPseudoElementType::after:
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return NS_LITERAL_STRING("::after");
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default:
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MOZ_ASSERT(aPseudoType == CSSPseudoElementType::NotPseudo,
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"Unexpected pseudo type");
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return EmptyString();
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}
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}
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template <class AnimationType>
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void
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AnimationCollection<AnimationType>::UpdateCheckGeneration(
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nsPresContext* aPresContext)
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{
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if (aPresContext->RestyleManager()->IsServo()) {
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// stylo: ServoRestyleManager does not support animations yet.
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return;
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}
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mCheckGeneration =
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aPresContext->RestyleManager()->AsGecko()->GetAnimationGeneration();
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}
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// Explicit class instantiations
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template class AnimationCollection<dom::CSSAnimation>;
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template class AnimationCollection<dom::CSSTransition>;
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} // namespace mozilla
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