From 6ccdf85cefeaac6872398d605685cd9ac2a26211 Mon Sep 17 00:00:00 2001
From: David Aurelio <davidaurelio@fb.com>
Date: Thu, 9 May 2019 04:14:08 -0700
Subject: [PATCH] Publish event when visiting nodes during layout

Summary:
@public

Publish an event when visiting nodes during layouts.

Reviewed By: SidharthGuglani

Differential Revision: D15206965

fbshipit-source-id: c201f084b1d4186bc64560b8033be965f2549236
---
 ReactCommon/yoga/yoga/Yoga.cpp | 3 +++
 ReactCommon/yoga/yoga/events.h | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/ReactCommon/yoga/yoga/Yoga.cpp b/ReactCommon/yoga/yoga/Yoga.cpp
index 05fb10d278f..5f6fa875e0b 100644
--- a/ReactCommon/yoga/yoga/Yoga.cpp
+++ b/ReactCommon/yoga/yoga/Yoga.cpp
@@ -3667,6 +3667,9 @@ bool YGLayoutNodeInternal(
     const YGConfigRef config,
     YGMarkerLayoutData& layoutMarkerData,
     void* const layoutContext) {
+#ifdef YG_ENABLE_EVENTS
+  Event::publish<Event::NodeLayout>(node);
+#endif
   YGLayout* layout = &node->getLayout();
 
   gDepth++;
diff --git a/ReactCommon/yoga/yoga/events.h b/ReactCommon/yoga/yoga/events.h
index 7b04060a89a..e667d2d2bde 100644
--- a/ReactCommon/yoga/yoga/events.h
+++ b/ReactCommon/yoga/yoga/events.h
@@ -15,7 +15,7 @@ namespace facebook {
 namespace yoga {
 
 struct Event {
-  enum Type { NodeAllocation, NodeDeallocation };
+  enum Type { NodeAllocation, NodeDeallocation, NodeLayout };
   class Data;
   using Subscriber = void(const YGNode&, Type, Data);