CC Animation: Let MutatorHostClient deals with elements instead of layers.

cc/animation/element_animations.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 CC_ANIMATION_ELEMENT_ANIMATIONS_H_
 #define CC_ANIMATION_ELEMENT_ANIMATIONS_H_
 
 #include <bitset>
 #include <memory>
 #include <vector>
@@ skipping 15 matching lines @@
 }
 
 namespace cc {
 
 class AnimationDelegate;
 class AnimationEvents;
 class AnimationHost;
 class AnimationPlayer;
 class FilterOperations;
 class KeyframeValueList;
-enum class LayerTreeType;
+enum class ElementListType;
 
 // An ElementAnimations owns a list of all AnimationPlayers, attached to
-// the layer.
+// the element.
 // This is a CC counterpart for blink::ElementAnimations (in 1:1 relationship).
 // No pointer to/from respective blink::ElementAnimations object for now.
 class CC_EXPORT ElementAnimations : public base::RefCounted<ElementAnimations> {
  public:
   static scoped_refptr<ElementAnimations> Create();
 
   ElementId element_id() const { return element_id_; }
   void SetElementId(ElementId element_id);
 
   // Parent AnimationHost.
   AnimationHost* animation_host() { return animation_host_; }
   const AnimationHost* animation_host() const { return animation_host_; }
   void SetAnimationHost(AnimationHost* host);
 
   void InitAffectedElementTypes();
   void ClearAffectedElementTypes();
 
-  void LayerRegistered(ElementId element_id, LayerTreeType tree_type);
-  void LayerUnregistered(ElementId element_id, LayerTreeType tree_type);
+  void ElementRegistered(ElementId element_id, ElementListType list_type);
+  void ElementUnregistered(ElementId element_id, ElementListType list_type);
 
   void AddPlayer(AnimationPlayer* player);
   void RemovePlayer(AnimationPlayer* player);
   bool IsEmpty() const;
 
   typedef base::LinkedList<AnimationPlayer> PlayersList;
   typedef base::LinkNode<AnimationPlayer> PlayersListNode;
   const PlayersList& players_list() const { return *players_list_.get(); }
 
   // Ensures that the list of active animations on the main thread and the impl
@@ skipping 31 matching lines @@
   // aborted.
   bool HasActiveAnimation() const;
 
   // Returns true if there are any animations at all to process.
   bool has_any_animation() const { return !animations_.empty(); }
 
   // Returns true if there is an animation that is either currently animating
   // the given property or scheduled to animate this property in the future, and
   // that affects the given tree type.
   bool IsPotentiallyAnimatingProperty(TargetProperty::Type target_property,
-                                      LayerTreeType tree_type) const;
+                                      ElementListType list_type) const;
 
   // Returns true if there is an animation that is currently animating the given
   // property and that affects the given tree type.
   bool IsCurrentlyAnimatingProperty(TargetProperty::Type target_property,
-                                    LayerTreeType tree_type) const;
+                                    ElementListType list_type) const;
 
   void NotifyAnimationStarted(const AnimationEvent& event);
   void NotifyAnimationFinished(const AnimationEvent& event);
   void NotifyAnimationAborted(const AnimationEvent& event);
   void NotifyAnimationPropertyUpdate(const AnimationEvent& event);
   void NotifyAnimationTakeover(const AnimationEvent& event);
 
   bool has_element_in_active_list() const {
     return has_element_in_active_list_;
   }
@@ skipping 15 matching lines @@
            HasFilterAnimationThatInflatesBounds();
   }
 
   bool FilterAnimationBoundsForBox(const gfx::BoxF& box,
                                    gfx::BoxF* bounds) const;
   bool TransformAnimationBoundsForBox(const gfx::BoxF& box,
                                       gfx::BoxF* bounds) const;
 
   bool HasAnimationThatAffectsScale() const;
 
-  bool HasOnlyTranslationTransforms(LayerTreeType tree_type) const;
+  bool HasOnlyTranslationTransforms(ElementListType list_type) const;
 
   bool AnimationsPreserveAxisAlignment() const;
 
   // Sets |start_scale| to the maximum of starting animation scale along any
   // dimension at any destination in active animations. Returns false if the
   // starting scale cannot be computed.
-  bool AnimationStartScale(LayerTreeType tree_type, float* start_scale) const;
+  bool AnimationStartScale(ElementListType list_type, float* start_scale) const;
 
   // Sets |max_scale| to the maximum scale along any dimension at any
   // destination in active animations. Returns false if the maximum scale cannot
   // be computed.
-  bool MaximumTargetScale(LayerTreeType tree_type, float* max_scale) const;
+  bool MaximumTargetScale(ElementListType list_type, float* max_scale) const;
 
   // When a scroll animation is removed on the main thread, its compositor
   // thread counterpart continues producing scroll deltas until activation.
   // These scroll deltas need to be cleared at activation, so that the active
-  // layer's scroll offset matches the offset provided by the main thread
+  // element's scroll offset matches the offset provided by the main thread
   // rather than a combination of this offset and scroll deltas produced by
   // the removed animation. This is to provide the illusion of synchronicity to
   // JS that simultaneously removes an animation and sets the scroll offset.
   bool scroll_offset_animation_was_interrupted() const {
     return scroll_offset_animation_was_interrupted_;
   }
 
   bool needs_to_start_animations_for_testing() {
     return needs_to_start_animations_;
   }
@@ skipping 43 matching lines @@
                                         bool notify_pending_elements);
 
   void NotifyClientAnimationWaitingForDeletion();
 
   void NotifyClientTransformIsPotentiallyAnimatingChanged(
       bool notify_active_elements,
       bool notify_pending_elements);
 
   void UpdatePotentiallyAnimatingTransform();
 
-  void OnFilterAnimated(LayerTreeType tree_type,
+  void OnFilterAnimated(ElementListType list_type,
                         const FilterOperations& filters);
-  void OnOpacityAnimated(LayerTreeType tree_type, float opacity);
-  void OnTransformAnimated(LayerTreeType tree_type,
+  void OnOpacityAnimated(ElementListType list_type, float opacity);
+  void OnTransformAnimated(ElementListType list_type,
                            const gfx::Transform& transform);
-  void OnScrollOffsetAnimated(LayerTreeType tree_type,
+  void OnScrollOffsetAnimated(ElementListType list_type,
                               const gfx::ScrollOffset& scroll_offset);
   void OnAnimationWaitingForDeletion();
-  void OnTransformIsPotentiallyAnimatingChanged(LayerTreeType tree_type,
+  void OnTransformIsPotentiallyAnimatingChanged(ElementListType list_type,
                                                 bool is_animating);
   gfx::ScrollOffset ScrollOffsetForAnimation() const;
 
   void NotifyPlayersAnimationStarted(base::TimeTicks monotonic_time,
                                      TargetProperty::Type target_property,
                                      int group);
   void NotifyPlayersAnimationFinished(base::TimeTicks monotonic_time,
                                       TargetProperty::Type target_property,
                                       int group);
   void NotifyPlayersAnimationAborted(base::TimeTicks monotonic_time,
@@ skipping 26 matching lines @@
 
   bool potentially_animating_transform_for_active_elements_;
   bool potentially_animating_transform_for_pending_elements_;
 
   DISALLOW_COPY_AND_ASSIGN(ElementAnimations);
 };
 
 }  // namespace cc
 
 #endif  // CC_ANIMATION_ELEMENT_ANIMATIONS_H_