From e85f2e25478b7bdd76fccf2e78c9502854a70ed6 Mon Sep 17 00:00:00 2001
From: Vincent Riemer <vincentriemer@fb.com>
Date: Thu, 7 Apr 2022 14:07:58 -0700
Subject: [PATCH] Add ObjC feature flag for dispatching w3c pointer events

Summary: Changelog: [Internal] Set up iOS feature flag for w3c pointer event dispatch

Reviewed By: lunaleaps

Differential Revision: D35233280

fbshipit-source-id: de439d9bbad4d5d2010a8ca3b99dd46c9a33946c
---
 React/Base/RCTConstants.h           |  6 ++++++
 React/Base/RCTConstants.m           | 15 +++++++++++++++
 React/Fabric/RCTSurfacePresenter.mm |  4 ++++
 3 files changed, 25 insertions(+)

diff --git a/React/Base/RCTConstants.h b/React/Base/RCTConstants.h
index 14a5263f83a..cc51b2e780f 100644
--- a/React/Base/RCTConstants.h
+++ b/React/Base/RCTConstants.h
@@ -15,3 +15,9 @@ RCT_EXTERN NSString *const RCTUserInterfaceStyleDidChangeNotificationTraitCollec
  */
 RCT_EXTERN BOOL RCTExperimentGetPreemptiveViewAllocationDisabled(void);
 RCT_EXTERN void RCTExperimentSetPreemptiveViewAllocationDisabled(BOOL value);
+
+/*
+ * W3C Pointer Events
+ */
+RCT_EXTERN BOOL RCTGetDispatchW3CPointerEvents(void);
+RCT_EXTERN void RCTSetDispatchW3CPointerEvents(BOOL value);
diff --git a/React/Base/RCTConstants.m b/React/Base/RCTConstants.m
index 8d1e308acd9..75b76d708f7 100644
--- a/React/Base/RCTConstants.m
+++ b/React/Base/RCTConstants.m
@@ -24,3 +24,18 @@ void RCTExperimentSetPreemptiveViewAllocationDisabled(BOOL value)
 {
   RCTExperimentPreemptiveViewAllocationDisabled = value;
 }
+
+/*
+ * W3C Pointer Events
+ */
+static BOOL RCTDispatchW3CPointerEvents = NO;
+
+BOOL RCTGetDispatchW3CPointerEvents()
+{
+  return RCTDispatchW3CPointerEvents;
+}
+
+void RCTSetDispatchW3CPointerEvents(BOOL value)
+{
+  RCTDispatchW3CPointerEvents = value;
+}
diff --git a/React/Fabric/RCTSurfacePresenter.mm b/React/Fabric/RCTSurfacePresenter.mm
index 59937990722..8ccc496c3de 100644
--- a/React/Fabric/RCTSurfacePresenter.mm
+++ b/React/Fabric/RCTSurfacePresenter.mm
@@ -269,6 +269,10 @@ static BackgroundExecutor RCTGetBackgroundExecutor()
     RCTExperimentSetPreemptiveViewAllocationDisabled(YES);
   }
 
+  if (reactNativeConfig && reactNativeConfig->getBool("rn_convergence:dispatch_pointer_events")) {
+    RCTSetDispatchW3CPointerEvents(YES);
+  }
+
   auto componentRegistryFactory =
       [factory = wrapManagedObject(_mountingManager.componentViewRegistry.componentViewFactory)](
           EventDispatcher::Weak const &eventDispatcher, ContextContainer::Shared const &contextContainer) {