Update animation when changes in animation keyframes are detected.

Source/core/animation/css/CSSAnimations.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 37 matching lines @@
 class CSSTransitionData;
 class Element;
 class StylePropertyShorthand;
 class StyleResolver;
 class StyleRuleKeyframes;
 
 // This class stores the CSS Animations/Transitions information we use during a style recalc.
 // This includes updates to animations/transitions as well as the Interpolations to be applied.
 class CSSAnimationUpdate final : public NoBaseWillBeGarbageCollectedFinalized<CSSAnimationUpdate> {
 public:
-    void startAnimation(const AtomicString& animationName, PassRefPtrWillBeRawPtr<InertAnimation> animation)
+    void startAnimation(const AtomicString& animationName, PassRefPtrWillBeRawPtr<InertAnimation> animation, const Timing& newTiming)
     {
         animation->setName(animationName);
         NewAnimation newAnimation;
         newAnimation.name = animationName;
         newAnimation.animation = animation;
+        newAnimation.newTiming = newTiming;
         m_newAnimations.append(newAnimation);
     }
     // Returns whether player has been suppressed and should be filtered during style application.
     bool isSuppressedAnimation(const AnimationPlayer* player) const { return m_suppressedAnimationPlayers.contains(player); }
     void cancelAnimation(const AtomicString& name, AnimationPlayer& player)
     {
         m_cancelledAnimationNames.append(name);
         m_suppressedAnimationPlayers.add(&player);
     }
     void toggleAnimationPaused(const AtomicString& name)
     {
         m_animationsWithPauseToggled.append(name);
     }
-    void updateAnimationTiming(AnimationPlayer* player, PassRefPtrWillBeRawPtr<InertAnimation> animation, const Timing& timing)
+    void updateAnimation(const AtomicString& name, AnimationPlayer* player, PassRefPtrWillBeRawPtr<InertAnimation> animation, const Timing& newTiming, unsigned styleChangeCounter)
     {
-        UpdatedAnimationTiming updatedAnimation;
+        UpdatedAnimation updatedAnimation;
+        updatedAnimation.name = name;
         updatedAnimation.player = player;
         updatedAnimation.animation = animation;
-        updatedAnimation.newTiming = timing;
-        m_animationsWithTimingUpdates.append(updatedAnimation);
+        updatedAnimation.newTiming = newTiming;
+        updatedAnimation.styleChangeCounter = styleChangeCounter;
+        m_animationsWithUpdates.append(updatedAnimation);
         m_suppressedAnimationPlayers.add(player);
     }
 
     void startTransition(CSSPropertyID id, CSSPropertyID eventId, const AnimatableValue* from, const AnimatableValue* to, PassRefPtrWillBeRawPtr<InertAnimation> animation)
     {
         animation->setName(getPropertyName(id));
         NewTransition newTransition;
         newTransition.id = id;
         newTransition.eventId = eventId;
         newTransition.from = from;
         newTransition.to = to;
         newTransition.animation = animation;
         m_newTransitions.set(id, newTransition);
     }
     bool isCancelledTransition(CSSPropertyID id) const { return m_cancelledTransitions.contains(id); }
     void cancelTransition(CSSPropertyID id) { m_cancelledTransitions.add(id); }
 
     struct NewAnimation {
         ALLOW_ONLY_INLINE_ALLOCATION();
     public:
         void trace(Visitor* visitor)
         {
             visitor->trace(animation);
         }
 
         AtomicString name;
         RefPtrWillBeMember<InertAnimation> animation;
+        Timing newTiming;

[dstockwell, 2014/12/29 23:16:33]

Why newTiming rather than just timing?

[shend, 2014/12/30 00:03:40]

Changed to just 'timing'. It was meant to differentiate between the actual
specified timing ('newTiming') and the specified timing fed into web animations
('timing') which always has a timing function of 'linear'.

     };
 
-    struct UpdatedAnimationTiming {
+    struct UpdatedAnimation {
         ALLOW_ONLY_INLINE_ALLOCATION();
     public:
         void trace(Visitor* visitor)
         {
             visitor->trace(player);
             visitor->trace(animation);
         }
 
+        AtomicString name;
         RawPtrWillBeMember<AnimationPlayer> player;
         RefPtrWillBeMember<InertAnimation> animation;
         Timing newTiming;
+        unsigned styleChangeCounter;
     };
 
     const WillBeHeapVector<NewAnimation>& newAnimations() const { return m_newAnimations; }
     const Vector<AtomicString>& cancelledAnimationNames() const { return m_cancelledAnimationNames; }
     const WillBeHeapHashSet<RawPtrWillBeMember<const AnimationPlayer>>& suppressedAnimationAnimationPlayers() const { return m_suppressedAnimationPlayers; }
     const Vector<AtomicString>& animationsWithPauseToggled() const { return m_animationsWithPauseToggled; }
-    const WillBeHeapVector<UpdatedAnimationTiming>& animationsWithTimingUpdates() const { return m_animationsWithTimingUpdates; }
+    const WillBeHeapVector<UpdatedAnimation>& animationsWithUpdates() const { return m_animationsWithUpdates; }
 
     struct NewTransition {
         ALLOW_ONLY_INLINE_ALLOCATION();
     public:
         void trace(Visitor* visitor)
         {
             visitor->trace(from);
             visitor->trace(to);
             visitor->trace(animation);
         }
@@ skipping 13 matching lines @@
     const WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>>& activeInterpolationsForAnimations() const { return m_activeInterpolationsForAnimations; }
     const WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>>& activeInterpolationsForTransitions() const { return m_activeInterpolationsForTransitions; }
     WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>>& activeInterpolationsForAnimations() { return m_activeInterpolationsForAnimations; }
 
     bool isEmpty() const
     {
         return m_newAnimations.isEmpty()
             && m_cancelledAnimationNames.isEmpty()
             && m_suppressedAnimationPlayers.isEmpty()
             && m_animationsWithPauseToggled.isEmpty()
-            && m_animationsWithTimingUpdates.isEmpty()
+            && m_animationsWithUpdates.isEmpty()
             && m_newTransitions.isEmpty()
             && m_cancelledTransitions.isEmpty()
             && m_activeInterpolationsForAnimations.isEmpty()
             && m_activeInterpolationsForTransitions.isEmpty();
     }
 
     void trace(Visitor*);
 
 private:
     // Order is significant since it defines the order in which new animations
     // will be started. Note that there may be multiple animations present
     // with the same name, due to the way in which we split up animations with
     // incomplete keyframes.
     WillBeHeapVector<NewAnimation> m_newAnimations;
     Vector<AtomicString> m_cancelledAnimationNames;
     WillBeHeapHashSet<RawPtrWillBeMember<const AnimationPlayer>> m_suppressedAnimationPlayers;
     Vector<AtomicString> m_animationsWithPauseToggled;
-    WillBeHeapVector<UpdatedAnimationTiming> m_animationsWithTimingUpdates;
+    WillBeHeapVector<UpdatedAnimation> m_animationsWithUpdates;
 
     NewTransitionMap m_newTransitions;
     HashSet<CSSPropertyID> m_cancelledTransitions;
 
     WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>> m_activeInterpolationsForAnimations;
     WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>> m_activeInterpolationsForTransitions;
 };
 
 class CSSAnimations final {
     WTF_MAKE_NONCOPYABLE(CSSAnimations);
@@ skipping 14 matching lines @@
     static PassOwnPtrWillBeRawPtr<CSSAnimationUpdate> calculateUpdate(const Element* animatingElement, Element&, const RenderStyle&, RenderStyle* parentStyle, StyleResolver*);
 
     void setPendingUpdate(PassOwnPtrWillBeRawPtr<CSSAnimationUpdate> update) { m_pendingUpdate = update; }
     void maybeApplyPendingUpdate(Element*);
     bool isEmpty() const { return m_animations.isEmpty() && m_transitions.isEmpty() && !m_pendingUpdate; }
     void cancel();
 
     void trace(Visitor*);
 
 private:
+    struct RunningAnimation {
+        ALLOW_ONLY_INLINE_ALLOCATION();
+    public:
+        void trace(Visitor* visitor)
+        {
+            visitor->trace(player);
+        }
+
+        RefPtrWillBeMember<AnimationPlayer> player;
+        Timing specifiedTiming;
+        unsigned styleChangeCounter;
+    };
+
     struct RunningTransition {
         ALLOW_ONLY_INLINE_ALLOCATION();
     public:
         void trace(Visitor* visitor)
         {
             visitor->trace(player);
             visitor->trace(from);
             visitor->trace(to);
         }
 
         RefPtrWillBeMember<AnimationPlayer> player;
         RawPtrWillBeMember<const AnimatableValue> from;
         RawPtrWillBeMember<const AnimatableValue> to;
     };
 
-    using AnimationMap = WillBeHeapHashMap<AtomicString, RefPtrWillBeMember<AnimationPlayer>>;
+    using AnimationMap = WillBeHeapHashMap<AtomicString, RunningAnimation>;
     AnimationMap m_animations;
 
     using TransitionMap = WillBeHeapHashMap<CSSPropertyID, RunningTransition>;
     TransitionMap m_transitions;
 
     OwnPtrWillBeMember<CSSAnimationUpdate> m_pendingUpdate;
 
     WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>> m_previousActiveInterpolationsForAnimations;
 
     static void calculateAnimationUpdate(CSSAnimationUpdate*, const Element* animatingElement, Element&, const RenderStyle&, RenderStyle* parentStyle, StyleResolver*);
@@ skipping 39 matching lines @@
     private:
         RawPtrWillBeMember<Element> m_target;
         const CSSPropertyID m_property;
         AnimationNode::Phase m_previousPhase;
     };
 };
 
 } // namespace blink
 
 WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::CSSAnimationUpdate::NewAnimation);
-WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::CSSAnimationUpdate::UpdatedAnimationTiming);
+WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::CSSAnimationUpdate::UpdatedAnimation);
 
 #endif