1 files changed, 79 insertions, 0 deletions
diff --git a/layout/style/AnimationCollection.cpp b/layout/style/AnimationCollection.cpp
new file mode 100644
index 0000000000..69d555fd2d
--- /dev/null
+++ b/layout/style/AnimationCollection.cpp
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/AnimationCollection.h"
+#include <type_traits>
+
+#include "mozilla/ElementAnimationData.h"
+#include "mozilla/RestyleManager.h"
+#include "nsDOMMutationObserver.h"      // For nsAutoAnimationMutationBatch
+#include "mozilla/dom/CSSAnimation.h"   // For dom::CSSAnimation
+#include "mozilla/dom/CSSTransition.h"  // For dom::CSSTransition
+
+namespace mozilla {
+
+template <class AnimationType>
+AnimationCollection<AnimationType>::~AnimationCollection() {
+  MOZ_COUNT_DTOR(AnimationCollection);
+
+  const PostRestyleMode postRestyle =
+      mCalledDestroy ? PostRestyleMode::IfNeeded : PostRestyleMode::Never;
+  {
+    nsAutoAnimationMutationBatch mb(mElement.OwnerDoc());
+
+    for (size_t animIdx = mAnimations.Length(); animIdx-- != 0;) {
+      mAnimations[animIdx]->CancelFromStyle(postRestyle);
+    }
+  }
+  LinkedListElement<SelfType>::remove();
+}
+
+template <class AnimationType>
+void AnimationCollection<AnimationType>::Destroy() {
+  mCalledDestroy = true;
+  auto* data = mElement.GetAnimationData();
+  MOZ_ASSERT(data);
+  if constexpr (std::is_same_v<AnimationType, dom::CSSAnimation>) {
+    MOZ_ASSERT(data->GetAnimationCollection(mPseudo) == this);
+    data->ClearAnimationCollectionFor(mPseudo);
+  } else {
+    MOZ_ASSERT(data->GetTransitionCollection(mPseudo) == this);
+    data->ClearTransitionCollectionFor(mPseudo);
+  }
+}
+
+template <class AnimationType>
+AnimationCollection<AnimationType>* AnimationCollection<AnimationType>::Get(
+    const dom::Element* aElement, const PseudoStyleType aType) {
+  auto* data = aElement->GetAnimationData();
+  if (!data) {
+    return nullptr;
+  }
+  if constexpr (std::is_same_v<AnimationType, dom::CSSAnimation>) {
+    return data->GetAnimationCollection(aType);
+  } else {
+    return data->GetTransitionCollection(aType);
+  }
+}
+
+template <class AnimationType>
+/* static */ AnimationCollection<AnimationType>*
+AnimationCollection<AnimationType>::Get(const nsIFrame* aFrame) {
+  Maybe<NonOwningAnimationTarget> target =
+      EffectCompositor::GetAnimationElementAndPseudoForFrame(aFrame);
+  if (!target) {
+    return nullptr;
+  }
+
+  return Get(target->mElement, target->mPseudoType);
+}
+
+// Explicit class instantiations
+
+template class AnimationCollection<dom::CSSAnimation>;
+template class AnimationCollection<dom::CSSTransition>;
+
+}  // namespace mozilla