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-rw-r--r--dom/animation/AnimationTimeline.cpp121
1 files changed, 121 insertions, 0 deletions
diff --git a/dom/animation/AnimationTimeline.cpp b/dom/animation/AnimationTimeline.cpp
new file mode 100644
index 0000000000..a684cd60cf
--- /dev/null
+++ b/dom/animation/AnimationTimeline.cpp
@@ -0,0 +1,121 @@
+/* -*- 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 "AnimationTimeline.h"
+#include "mozilla/dom/Animation.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(AnimationTimeline)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(AnimationTimeline)
+ tmp->mAnimationOrder.clear();
+ NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow, mAnimations)
+ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AnimationTimeline)
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow, mAnimations)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(AnimationTimeline)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(AnimationTimeline)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AnimationTimeline)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+AnimationTimeline::AnimationTimeline(nsIGlobalObject* aWindow,
+ RTPCallerType aRTPCallerType)
+ : mWindow(aWindow), mRTPCallerType(aRTPCallerType) {
+ MOZ_ASSERT(mWindow);
+}
+
+AnimationTimeline::~AnimationTimeline() { mAnimationOrder.clear(); }
+
+bool AnimationTimeline::Tick(TickState& aState) {
+ bool needsTicks = false;
+
+ nsTArray<Animation*> animationsToRemove;
+
+ for (Animation* animation = mAnimationOrder.getFirst(); animation;
+ animation =
+ static_cast<LinkedListElement<Animation>*>(animation)->getNext()) {
+ MOZ_ASSERT(mAnimations.Contains(animation),
+ "The sampling order list should be a subset of the hashset");
+ MOZ_ASSERT(!animation->IsHiddenByContentVisibility(),
+ "The sampling order list should not contain any animations "
+ "that are hidden by content-visibility");
+
+ // Skip any animations that are longer need associated with this timeline.
+ if (animation->GetTimeline() != this) {
+ // If animation has some other timeline, it better not be also in the
+ // animation list of this timeline object!
+ MOZ_ASSERT(!animation->GetTimeline());
+ animationsToRemove.AppendElement(animation);
+ continue;
+ }
+
+ needsTicks |= animation->NeedsTicks();
+ // Even if |animation| doesn't need future ticks, we should still
+ // Tick it this time around since it might just need a one-off tick in
+ // order to dispatch events.
+ animation->Tick(aState);
+
+ if (!animation->NeedsTicks()) {
+ animationsToRemove.AppendElement(animation);
+ }
+ }
+
+ for (Animation* animation : animationsToRemove) {
+ RemoveAnimation(animation);
+ }
+
+ return needsTicks;
+}
+
+void AnimationTimeline::NotifyAnimationUpdated(Animation& aAnimation) {
+ if (mAnimations.EnsureInserted(&aAnimation)) {
+ if (aAnimation.GetTimeline() && aAnimation.GetTimeline() != this) {
+ aAnimation.GetTimeline()->RemoveAnimation(&aAnimation);
+ }
+ if (!aAnimation.IsHiddenByContentVisibility()) {
+ mAnimationOrder.insertBack(&aAnimation);
+ }
+ }
+}
+
+void AnimationTimeline::RemoveAnimation(Animation* aAnimation) {
+ MOZ_ASSERT(!aAnimation->GetTimeline() || aAnimation->GetTimeline() == this);
+ if (static_cast<LinkedListElement<Animation>*>(aAnimation)->isInList()) {
+ MOZ_ASSERT(mAnimations.Contains(aAnimation),
+ "The sampling order list should be a subset of the hashset");
+ static_cast<LinkedListElement<Animation>*>(aAnimation)->remove();
+ }
+ mAnimations.Remove(aAnimation);
+}
+
+void AnimationTimeline::NotifyAnimationContentVisibilityChanged(
+ Animation* aAnimation, bool aIsVisible) {
+ bool inList =
+ static_cast<LinkedListElement<Animation>*>(aAnimation)->isInList();
+ MOZ_ASSERT(!inList || mAnimations.Contains(aAnimation),
+ "The sampling order list should be a subset of the hashset");
+ if (aIsVisible && !inList && mAnimations.Contains(aAnimation)) {
+ mAnimationOrder.insertBack(aAnimation);
+ } else if (!aIsVisible && inList) {
+ static_cast<LinkedListElement<Animation>*>(aAnimation)->remove();
+ }
+}
+
+void AnimationTimeline::UpdateHiddenByContentVisibility() {
+ for (Animation* animation : mAnimations) {
+ animation->UpdateHiddenByContentVisibility();
+ }
+}
+
+} // namespace mozilla::dom