From e21bbee5862eaf08c8f198fa18a32350f5caabbc Mon Sep 17 00:00:00 2001
From: David Vacca <dvacca@fb.com>
Date: Fri, 6 Apr 2018 15:01:13 -0700
Subject: [PATCH] Mutate shared ReactShadowNode during Fabric.appendChild

Reviewed By: shergin

Differential Revision: D7495539

fbshipit-source-id: 2b2b06d3d4f02a00b01c7ed27d47b61787ea922f
---
 .../java/com/facebook/react/fabric/FabricUIManager.java     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
index 2cadd153c..52519e9d3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
@@ -216,6 +216,12 @@ public class FabricUIManager implements UIManager {
       Log.d(TAG, "appendChild \n\tparent: " + parent + "\n\tchild: " + child);
     }
     try {
+      // If the child to append is shared with another tree (child.getParent() != null),
+      // then we add a mutation of it. In the future this will be performed by FabricJS / Fiber.
+      //TODO: T27926878 avoid cloning shared child
+      if (child.getParent() != null) {
+        child = child.mutableCopy();
+      }
       parent.addChildAt(child, parent.getChildCount());
     } catch (Throwable t) {
       handleException(parent, t);