create UIManagerAnimationBackend to replace forward declare class AnimationBackend

packages/react-native/ReactCommon/react/renderer/animated/NativeAnimatedNodesManager.cpp

@@ -33,6 +33,8 @@
 #include <react/renderer/animated/nodes/TrackingAnimatedNode.h>
 #include <react/renderer/animated/nodes/TransformAnimatedNode.h>
 #include <react/renderer/animated/nodes/ValueAnimatedNode.h>
+#include <react/renderer/animationbackend/AnimatedPropsBuilder.h>
+#include <react/renderer/animationbackend/AnimationBackend.h>
 #include <react/renderer/core/EventEmitter.h>
 
 namespace facebook::react {

packages/react-native/ReactCommon/react/renderer/animationbackend/AnimationBackend.h

@@ -10,6 +10,7 @@
 #include <folly/dynamic.h>
 #include <react/renderer/core/ReactPrimitives.h>
 #include <react/renderer/uimanager/UIManager.h>
+#include <react/renderer/uimanager/UIManagerAnimationBackend.h>
 #include <functional>
 #include <vector>
 #include "AnimatedProps.h"
@@ -24,16 +25,17 @@ struct AnimationMutation {
 };
 
 using AnimationMutations = std::vector<AnimationMutation>;
-using Callback = std::function<AnimationMutations(float)>;
-using StartOnRenderCallback = std::function<void(std::function<void()>&&)>;
-using StopOnRenderCallback = std::function<void()>;
-using DirectManipulationCallback =
-    std::function<void(Tag, const folly::dynamic&)>;
-using FabricCommitCallback =
-    std::function<void(std::unordered_map<Tag, folly::dynamic>&)>;
-
-class AnimationBackend {
+
+class AnimationBackend : public UIManagerAnimationBackend {
  public:
+  using Callback = std::function<AnimationMutations(float)>;
+  using StartOnRenderCallback = std::function<void(std::function<void()>&&)>;
+  using StopOnRenderCallback = std::function<void()>;
+  using DirectManipulationCallback =
+      std::function<void(Tag, const folly::dynamic&)>;
+  using FabricCommitCallback =
+      std::function<void(std::unordered_map<Tag, folly::dynamic>&)>;
+
   std::vector<Callback> callbacks;
   const StartOnRenderCallback startOnRenderCallback_;
   const StopOnRenderCallback stopOnRenderCallback_;
@@ -53,8 +55,8 @@ class AnimationBackend {
   void synchronouslyUpdateProps(
       const std::unordered_map<Tag, AnimatedProps>& updates);
 
-  void onAnimationFrame(double timestamp);
+  void onAnimationFrame(double timestamp) override;
   void start(const Callback& callback);
-  void stop();
+  void stop() override;
 };
 } // namespace facebook::react

packages/react-native/ReactCommon/react/renderer/uimanager/UIManager.cpp

@@ -679,11 +679,12 @@ void UIManager::setNativeAnimatedDelegate(
 }
 
 void UIManager::unstable_setAnimationBackend(
-    std::weak_ptr<AnimationBackend> animationBackend) {
+    std::weak_ptr<UIManagerAnimationBackend> animationBackend) {
   animationBackend_ = animationBackend;
 }
 
-std::weak_ptr<AnimationBackend> UIManager::unstable_getAnimationBackend() {
+std::weak_ptr<UIManagerAnimationBackend>
+UIManager::unstable_getAnimationBackend() {
   return animationBackend_;
 }
 

packages/react-native/ReactCommon/react/renderer/uimanager/UIManager.h

@@ -23,6 +23,7 @@
 #include <react/renderer/mounting/ShadowTree.h>
 #include <react/renderer/mounting/ShadowTreeDelegate.h>
 #include <react/renderer/mounting/ShadowTreeRegistry.h>
+#include <react/renderer/uimanager/UIManagerAnimationBackend.h>
 #include <react/renderer/uimanager/UIManagerAnimationDelegate.h>
 #include <react/renderer/uimanager/UIManagerDelegate.h>
 #include <react/renderer/uimanager/UIManagerNativeAnimatedDelegate.h>
@@ -36,7 +37,6 @@ namespace facebook::react {
 class UIManagerBinding;
 class UIManagerCommitHook;
 class UIManagerMountHook;
-class AnimationBackend;
 
 class UIManager final : public ShadowTreeDelegate {
  public:
@@ -63,9 +63,13 @@ class UIManager final : public ShadowTreeDelegate {
    * the pointer before being destroyed.
    */
   void setAnimationDelegate(UIManagerAnimationDelegate* delegate);
+
+  /**
+   * Sets and gets UIManager's AnimationBackend reference.
+   */
   void unstable_setAnimationBackend(
-      std::weak_ptr<AnimationBackend> animationBackend);
-  std::weak_ptr<AnimationBackend> unstable_getAnimationBackend();
+      std::weak_ptr<UIManagerAnimationBackend> animationBackend);
+  std::weak_ptr<UIManagerAnimationBackend> unstable_getAnimationBackend();
 
   /**
    * Execute stopSurface on any UIMAnagerAnimationDelegate.
@@ -263,7 +267,7 @@ class UIManager final : public ShadowTreeDelegate {
   std::unique_ptr<LazyShadowTreeRevisionConsistencyManager>
       lazyShadowTreeRevisionConsistencyManager_;
 
-  std::weak_ptr<AnimationBackend> animationBackend_;
+  std::weak_ptr<UIManagerAnimationBackend> animationBackend_;
 };
 
 } // namespace facebook::react

packages/react-native/ReactCommon/react/renderer/uimanager/UIManagerAnimationBackend.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <react/renderer/components/view/BaseViewProps.h>
+#include <react/renderer/core/ShadowNodeFamily.h>
+
+namespace facebook::react {
+
+class UIManagerAnimationBackend {
+ public:
+  virtual ~UIManagerAnimationBackend() = default;
+
+  virtual void onAnimationFrame(double timestamp) = 0;
+  // TODO: T240293839 Move over start() function and mutation types
+  virtual void stop() = 0;
+};
+
+} // namespace facebook::react