Disable calculation of TransformedFrames in Layoutable ShadowNodex

Summary:
Calculation of TransformedFrames was a method introduced by D37994809 (facebook@64528e5) to fix rendering of inverted flat lists.

We found that this operation is crashing in fb4a causing the UBN T127619309

This diff creates a feature flag to disable the calculation of TransformedFrames in Layoutable ShadowNodes. **The goal of this diff is to revert the behavior introduced by D37994809 (facebook@64528e5faa445907b8287b412c344f30c20fca61)**

The featureFlag is disabled in fb4a and enabled in react AR (because ReactAr apps relies on the calculation of TransformedFrames and these apps are not affected)

The root cause of the bug will be fixed by D38280674 (which still requires more testing and investigation)

changelog: [internal] internal

Reviewed By: JoshuaGross

Differential Revision: D38286857

fbshipit-source-id: 721cd0554ae6a6b369b3f8dbb584160a270d0f18

ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java

@@ -83,6 +83,9 @@ public class ReactFeatureFlags {
   /** Enables or disables MapBuffer Serialization */
   public static boolean mapBufferSerializationEnabled = false;
 
+  /** Enables or disables calculation of Transformed Frames */
+  public static boolean calculateTransformedFramesEnabled = false;
+
   /** Feature Flag to use overflowInset values provided by Yoga */
   public static boolean useOverflowInset = false;
 

ReactAndroid/src/main/java/com/facebook/react/fabric/jni/Binding.cpp

@@ -434,6 +434,10 @@ void Binding::installFabricUIManager(
       "MapBufferSerializationEnabled",
       getFeatureFlagValue("mapBufferSerializationEnabled"));
 
+  contextContainer->insert(
+      "CalculateTransformedFramesEnabled",
+      getFeatureFlagValue("calculateTransformedFramesEnabled"));
+
   disablePreallocateViews_ = reactNativeConfig_->getBool(
       "react_fabric:disabled_view_preallocation_android");
 

ReactCommon/react/renderer/core/LayoutableShadowNode.cpp

@@ -151,8 +151,21 @@ LayoutMetrics LayoutableShadowNode::computeRelativeLayoutMetrics(
   }
 
   // ------------------------------
-
-  auto transformedFrames = calculateTransformedFrames(shadowNodeList, policy);
+  // TODO: T127619309 remove after validating that T127619309 is fixed
+  auto optionalCalculateTransformedFrames =
+      descendantNode->getContextContainer()
+      ? descendantNode->getContextContainer()->find<bool>(
+            "CalculateTransformedFramesEnabled")
+      : std::optional<bool>(false);
+
+  bool shouldCalculateTransformedFrames =
+      optionalCalculateTransformedFrames.has_value()
+      ? optionalCalculateTransformedFrames.value()
+      : false;
+
+  auto transformedFrames = shouldCalculateTransformedFrames
+      ? calculateTransformedFrames(shadowNodeList, policy)
+      : LayoutableSmallVector<Rect>();
   auto layoutMetrics = descendantLayoutableNode->getLayoutMetrics();
   auto &resultFrame = layoutMetrics.frame;
   resultFrame.origin = {0, 0};
@@ -168,7 +181,9 @@ LayoutMetrics LayoutableShadowNode::computeRelativeLayoutMetrics(
       return EmptyLayoutMetrics;
     }
 
-    auto currentFrame = transformedFrames[i];
+    auto currentFrame = shouldCalculateTransformedFrames
+        ? transformedFrames[i]
+        : currentShadowNode->getLayoutMetrics().frame;
     if (i == size - 1) {
       // If it's the last element, its origin is irrelevant.
       currentFrame.origin = {0, 0};
@@ -185,6 +200,10 @@ LayoutMetrics LayoutableShadowNode::computeRelativeLayoutMetrics(
     }
 
     resultFrame.origin += currentFrame.origin;
+    if (!shouldCalculateTransformedFrames && i != 0 &&
+        policy.includeTransform) {
+      resultFrame.origin += currentShadowNode->getContentOriginOffset();
+    }
   }
 
   // ------------------------------

ReactCommon/react/renderer/core/ShadowNode.cpp

@@ -121,6 +121,10 @@ ShadowNode::Unshared ShadowNode::clone(
   return family_->componentDescriptor_.cloneShadowNode(*this, fragment);
 }
 
+ContextContainer::Shared ShadowNode::getContextContainer() const {
+  return family_->componentDescriptor_.getContextContainer();
+}
+
 #pragma mark - Getters
 
 ComponentName ShadowNode::getComponentName() const {

ReactCommon/react/renderer/core/ShadowNode.h

@@ -129,6 +129,11 @@ class ShadowNode : public Sealable, public DebugStringConvertible {
    */
   const ComponentDescriptor &getComponentDescriptor() const;
 
+  /*
+   * Returns the `ContextContainer` used by this ShadowNode.
+   */
+  ContextContainer::Shared getContextContainer() const;
+
   /*
    * Returns a state associated with the particular node.
    */

ReactCommon/react/renderer/core/tests/LayoutableShadowNodeTest.cpp

@@ -13,6 +13,9 @@
 
 using namespace facebook::react;
 
+// TODO: T127619309 re-enable CalculateTransformedFrames
+bool enableCalculateTransformedFrames = false;
+
 /*
  * ┌────────┐
  * │<View>  │
@@ -450,6 +453,11 @@ TEST(LayoutableShadowNodeTest, invertedVerticalView) {
   auto builder = simpleComponentBuilder();
   auto childShadowNode1 = std::shared_ptr<ViewShadowNode>{};
   auto childShadowNode2 = std::shared_ptr<ViewShadowNode>{};
+
+  if (!enableCalculateTransformedFrames) {
+    return;
+  }
+
   // clang-format off
   auto element =
         Element<ViewShadowNode>()
@@ -525,6 +533,11 @@ TEST(LayoutableShadowNodeTest, nestedInvertedVerticalView) {
   auto builder = simpleComponentBuilder();
   auto childShadowNode1 = std::shared_ptr<ViewShadowNode>{};
   auto childShadowNode2 = std::shared_ptr<ViewShadowNode>{};
+
+  if (!enableCalculateTransformedFrames) {
+    return;
+  }
+
   // clang-format off
   auto element =
     Element<ViewShadowNode>()
@@ -601,6 +614,11 @@ TEST(LayoutableShadowNodeTest, invertedHorizontalView) {
   auto builder = simpleComponentBuilder();
   auto childShadowNode1 = std::shared_ptr<ViewShadowNode>{};
   auto childShadowNode2 = std::shared_ptr<ViewShadowNode>{};
+
+  if (!enableCalculateTransformedFrames) {
+    return;
+  }
+
   // clang-format off
   auto element =
         Element<ViewShadowNode>()
@@ -672,6 +690,11 @@ TEST(LayoutableShadowNodeTest, nestedInvertedHorizontalView) {
   auto builder = simpleComponentBuilder();
   auto childShadowNode1 = std::shared_ptr<ViewShadowNode>{};
   auto childShadowNode2 = std::shared_ptr<ViewShadowNode>{};
+
+  if (!enableCalculateTransformedFrames) {
+    return;
+  }
+
   // clang-format off
   auto element =
     Element<ViewShadowNode>()
@@ -738,6 +761,11 @@ TEST(LayoutableShadowNodeTest, inversedContentOriginOffset) {
   auto builder = simpleComponentBuilder();
 
   auto childShadowNode = std::shared_ptr<ViewShadowNode>{};
+
+  if (!enableCalculateTransformedFrames) {
+    return;
+  }
+
   // clang-format off
   auto element =
     Element<ScrollViewShadowNode>()