From 9646c5cb3c40ef29be4bdbf39775ccfaddd8e489 Mon Sep 17 00:00:00 2001
From: Valentin Shergin <shergin@fb.com>
Date: Tue, 8 May 2018 18:50:05 -0700
Subject: [PATCH] Fabric: RCTViewComponentView, storing just applied
 `layoutMetrics`

Summary:
This will be useful for this class and for subclasses soon.
For instance, when we draw something in `drawRect:`, we need to know exact content frame for rendering.

Reviewed By: mdvacca

Differential Revision: D7751855

fbshipit-source-id: 5d688368edd7b4f3c8c19d54ca701a9cc361270b
---
 React/Fabric/Mounting/RCTViewComponentView.h  | 6 +++++-
 React/Fabric/Mounting/RCTViewComponentView.mm | 8 ++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/React/Fabric/Mounting/RCTViewComponentView.h b/React/Fabric/Mounting/RCTViewComponentView.h
index 046030a8f..8dc5fc2e1 100644
--- a/React/Fabric/Mounting/RCTViewComponentView.h
+++ b/React/Fabric/Mounting/RCTViewComponentView.h
@@ -9,13 +9,17 @@
 
 #import <React/RCTComponentViewProtocol.h>
 #import <React/UIView+ComponentViewProtocol.h>
+#import <fabric/core/LayoutMetrics.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
 /**
  * UIView class for <View> component.
  */
-@interface RCTViewComponentView : UIView <RCTComponentViewProtocol>
+@interface RCTViewComponentView : UIView <RCTComponentViewProtocol> {
+@protected
+  facebook::react::LayoutMetrics _layoutMetrics;
+}
 
 @end
 
diff --git a/React/Fabric/Mounting/RCTViewComponentView.mm b/React/Fabric/Mounting/RCTViewComponentView.mm
index 24a985949..cc3c0772b 100644
--- a/React/Fabric/Mounting/RCTViewComponentView.mm
+++ b/React/Fabric/Mounting/RCTViewComponentView.mm
@@ -30,4 +30,12 @@ using namespace facebook::react;
   // TODO: Implement all sutable non-layout <View> props.
 }
 
+- (void)updateLayoutMetrics:(LayoutMetrics)layoutMetrics
+           oldLayoutMetrics:(LayoutMetrics)oldLayoutMetrics
+{
+  [super updateLayoutMetrics:layoutMetrics oldLayoutMetrics:oldLayoutMetrics];
+
+  _layoutMetrics = layoutMetrics;
+}
+
 @end