Prepare for responsive CSS animations.

Source/core/animation/css/CSSAnimationUpdate.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSAnimationUpdate_h
 #define CSSAnimationUpdate_h
 
 #include "core/animation/Interpolation.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 class AnimationPlayer;
 class InertAnimation;
+class KeyframeEffectModelBase;
 
 // 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:
+    struct NewAnimation {
+        ALLOW_ONLY_INLINE_ALLOCATION();
+    public:
+        void trace(Visitor* visitor)
+        {
+            visitor->trace(animation);
+        }
+
+        AtomicString name;
+        RefPtrWillBeMember<InertAnimation> animation;
+    };
+
+    struct UpdatedAnimationTiming {
+        ALLOW_ONLY_INLINE_ALLOCATION();
+    public:
+        void trace(Visitor* visitor)
+        {
+            visitor->trace(player);
+            visitor->trace(animation);
+        }
+
+        RawPtrWillBeMember<AnimationPlayer> player;
+        RefPtrWillBeMember<InertAnimation> animation;
+        Timing newTiming;
+    };
+
+    struct UpdatedAnimationStyle {
+        ALLOW_ONLY_INLINE_ALLOCATION();
+    public:
+        void trace(Visitor* visitor)
+        {
+            visitor->trace(player);
+            visitor->trace(effect);
+        }
+
+        struct CompositableStyleSnapshot {
+            RefPtrWillBeMember<AnimatableValue> opacity;
+            RefPtrWillBeMember<AnimatableValue> transform;
+            RefPtrWillBeMember<AnimatableValue> webkitFilter;
+        };
+
+        RawPtrWillBeMember<AnimationPlayer> player;
+        RawPtrWillBeMember<KeyframeEffectModelBase> effect;
+        CompositableStyleSnapshot snapshot;
+    };
+
     void startAnimation(const AtomicString& animationName, PassRefPtrWillBeRawPtr<InertAnimation> animation)
     {
         animation->setName(animationName);
         NewAnimation newAnimation;
         newAnimation.name = animationName;
         newAnimation.animation = animation;
         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)
     {
         UpdatedAnimationTiming updatedAnimation;
         updatedAnimation.player = player;
         updatedAnimation.animation = animation;
         updatedAnimation.newTiming = timing;
         m_animationsWithTimingUpdates.append(updatedAnimation);
         m_suppressedAnimationPlayers.add(player);
     }
+    void updateAnimationStyle(AnimationPlayer* player, KeyframeEffectModelBase* effect, const UpdatedAnimationStyle::CompositableStyleSnapshot& snapshot)
+    {
+        UpdatedAnimationStyle updatedAnimation;
+        updatedAnimation.player = player;
+        updatedAnimation.effect = effect;
+        updatedAnimation.snapshot = snapshot;
+        m_animationsWithStyleUpdates.append(updatedAnimation);
+    }
 
     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;
-    };
-
-    struct UpdatedAnimationTiming {
-        ALLOW_ONLY_INLINE_ALLOCATION();
-    public:
-        void trace(Visitor* visitor)
-        {
-            visitor->trace(player);
-            visitor->trace(animation);
-        }
-
-        RawPtrWillBeMember<AnimationPlayer> player;
-        RefPtrWillBeMember<InertAnimation> animation;
-        Timing newTiming;
-    };
-
     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<UpdatedAnimationStyle>& animationsWithStyleUpdates() const { return m_animationsWithStyleUpdates; }
 
     struct NewTransition {
         ALLOW_ONLY_INLINE_ALLOCATION();
     public:
         void trace(Visitor* visitor)
         {
             visitor->trace(from);
             visitor->trace(to);
             visitor->trace(animation);
         }
@@ skipping 14 matching lines @@
     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_animationsWithStyleUpdates.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<UpdatedAnimationStyle> m_animationsWithStyleUpdates;
 
     NewTransitionMap m_newTransitions;
     HashSet<CSSPropertyID> m_cancelledTransitions;
 
     WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>> m_activeInterpolationsForAnimations;
     WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation>> m_activeInterpolationsForTransitions;
 };
 
 } // namespace blink
 
 WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::CSSAnimationUpdate::NewAnimation);
 WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::CSSAnimationUpdate::UpdatedAnimationTiming);
 
 #endif