Expose LayoutDirection to Fabric android

Summary: This diff exposes LayoutDirection as part of UpdateLayoutMountItem

Reviewed By: JoshuaGross

Differential Revision: D16060521

fbshipit-source-id: 163bf2a0bdca62dcecb03a8aaa2f4bf595b18c8f

ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java

@@ -265,8 +265,9 @@ public class FabricUIManager implements UIManager, LifecycleEventListener {
 
   @DoNotStrip
   @SuppressWarnings("unused")
-  private MountItem updateLayoutMountItem(int reactTag, int x, int y, int width, int height) {
-    return new UpdateLayoutMountItem(reactTag, x, y, width, height);
+  private MountItem updateLayoutMountItem(
+      int reactTag, int x, int y, int width, int height, int layoutDirection) {
+    return new UpdateLayoutMountItem(reactTag, x, y, width, height, layoutDirection);
   }
 
   @DoNotStrip

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

@@ -12,6 +12,7 @@
 #include <jsi/JSIDynamic.h>
 #include <jsi/jsi.h>
 #include <react/components/scrollview/ScrollViewProps.h>
+#include <react/core/conversions.h>
 #include <react/core/EventBeat.h>
 #include <react/core/EventEmitter.h>
 #include <react/debug/SystraceSection.h>
@@ -315,7 +316,7 @@ local_ref<JMountItem::javaobject> createUpdateLayoutMountItem(
       oldChildShadowView.layoutMetrics != newChildShadowView.layoutMetrics) {
     static auto updateLayoutInstruction =
         jni::findClassStatic(UIManagerJavaDescriptor)
-            ->getMethod<alias_ref<JMountItem>(jint, jint, jint, jint, jint)>(
+            ->getMethod<alias_ref<JMountItem>(jint, jint, jint, jint, jint, jint)>(
                 "updateLayoutMountItem");
     auto layoutMetrics = newChildShadowView.layoutMetrics;
     auto pointScaleFactor = layoutMetrics.pointScaleFactor;
@@ -325,8 +326,9 @@ local_ref<JMountItem::javaobject> createUpdateLayoutMountItem(
     int y = round(frame.origin.y * pointScaleFactor);
     int w = round(frame.size.width * pointScaleFactor);
     int h = round(frame.size.height * pointScaleFactor);
+    auto layoutDirection = toInt(newChildShadowView.layoutMetrics.layoutDirection);
     return updateLayoutInstruction(
-        javaUIManager, newChildShadowView.tag, x, y, w, h);
+        javaUIManager, newChildShadowView.tag, x, y, w, h, layoutDirection);
   }
 
   return nullptr;

ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/mountitems/UpdateLayoutMountItem.java

@@ -6,6 +6,9 @@
  */
 package com.facebook.react.fabric.mounting.mountitems;
 
+import android.annotation.TargetApi;
+import android.os.Build;
+import android.util.LayoutDirection;
 import com.facebook.react.fabric.mounting.MountingManager;
 
 public class UpdateLayoutMountItem implements MountItem {
@@ -15,13 +18,30 @@ public class UpdateLayoutMountItem implements MountItem {
   private final int mY;
   private final int mWidth;
   private final int mHeight;
+  private final int mLayoutDirection;
 
-  public UpdateLayoutMountItem(int reactTag, int x, int y, int width, int height) {
+  public UpdateLayoutMountItem(
+      int reactTag, int x, int y, int width, int height, int layoutDirection) {
     mReactTag = reactTag;
     mX = x;
     mY = y;
     mWidth = width;
     mHeight = height;
+    mLayoutDirection = convertLayoutDirection(layoutDirection);
+  }
+
+  @TargetApi(Build.VERSION_CODES.KITKAT)
+  private int convertLayoutDirection(int layoutDirection) {
+    switch (layoutDirection) {
+      case 0:
+        return LayoutDirection.INHERIT;
+      case 1:
+        return LayoutDirection.LTR;
+      case 2:
+        return LayoutDirection.RTL;
+      default:
+        throw new IllegalArgumentException("Unsupported layout direction: " + layoutDirection);
+    }
   }
 
   @Override
@@ -45,6 +65,10 @@ public class UpdateLayoutMountItem implements MountItem {
     return mWidth;
   }
 
+  public int getLayoutDirection() {
+    return mLayoutDirection;
+  }
+
   @Override
   public String toString() {
     return "UpdateLayoutMountItem ["
@@ -56,6 +80,8 @@ public class UpdateLayoutMountItem implements MountItem {
         + " - height: "
         + mHeight
         + " - width: "
-        + mWidth;
+        + mWidth
+        + " - layoutDirection: "
+        + +mLayoutDirection;
   }
 }

ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java

@@ -96,7 +96,7 @@ public class ReactTextViewManager
         textViewProps.getTopPadding(),
         textViewProps.getEndPadding(),
         textViewProps.getBottomPadding(),
-        textViewProps.getTextAlign(),
+        0,
         textBreakStrategy,
         justificationMode);
   }