Introducing YGPositionTypeStatic

Summary:
Changelog: [Internal] Fabric-specific internal change.
This diff introduces a new value for `YGPositionType`: `YGPositionTypeStatic`.
No part of Yoga, RN, Litho or CK uses this value yet. `relative` and `static` values behave the same way for now. We also do not change any defaults. So, it should be fine.

Reviewed By: SidharthGuglani

Differential Revision: D22386732

fbshipit-source-id: 39cd9e818458ac2a91efb175f24a74c8c303ff08

React/Base/RCTConvert.m

@@ -1119,7 +1119,11 @@ RCT_ENUM_CONVERTER(
 
 RCT_ENUM_CONVERTER(
     YGPositionType,
-    (@{@"absolute" : @(YGPositionTypeAbsolute), @"relative" : @(YGPositionTypeRelative)}),
+    (@{
+      @"static" : @(YGPositionTypeStatic),
+      @"absolute" : @(YGPositionTypeAbsolute),
+      @"relative" : @(YGPositionTypeRelative)
+    }),
     YGPositionTypeRelative,
     intValue)
 

ReactAndroid/src/main/java/com/facebook/react/uimanager/LayoutShadowNode.java

@@ -779,6 +779,11 @@ public class LayoutShadowNode extends ReactShadowNodeImpl {
     }
 
     switch (position) {
+      case "static":
+        {
+          setPositionType(YogaPositionType.STATIC);
+          break;
+        }
       case "relative":
         {
           setPositionType(YogaPositionType.RELATIVE);

ReactAndroid/src/main/java/com/facebook/yoga/YogaPositionType.java

@@ -8,8 +8,9 @@
 package com.facebook.yoga;
 
 public enum YogaPositionType {
-  RELATIVE(0),
-  ABSOLUTE(1);
+  STATIC(0),
+  RELATIVE(1),
+  ABSOLUTE(2);
 
   private final int mIntValue;
 
@@ -23,8 +24,9 @@ public enum YogaPositionType {
 
   public static YogaPositionType fromInt(int value) {
     switch (value) {
-      case 0: return RELATIVE;
-      case 1: return ABSOLUTE;
+      case 0: return STATIC;
+      case 1: return RELATIVE;
+      case 2: return ABSOLUTE;
       default: throw new IllegalArgumentException("Unknown enum value: " + value);
     }
   }

ReactCommon/fabric/components/view/conversions.h

@@ -276,6 +276,10 @@ inline void fromRawValue(const RawValue &value, YGAlign &result) {
 inline void fromRawValue(const RawValue &value, YGPositionType &result) {
   assert(value.hasType<std::string>());
   auto stringValue = (std::string)value;
+  if (stringValue == "static") {
+    result = YGPositionTypeStatic;
+    return;
+  }
   if (stringValue == "relative") {
     result = YGPositionTypeRelative;
     return;
@@ -615,6 +619,8 @@ inline std::string toString(const YGAlign &value) {
 
 inline std::string toString(const YGPositionType &value) {
   switch (value) {
+    case YGPositionTypeStatic:
+      return "static";
     case YGPositionTypeRelative:
       return "relative";
     case YGPositionTypeAbsolute:

ReactCommon/yoga/yoga/YGEnums.cpp

@@ -179,6 +179,8 @@ const char* YGOverflowToString(const YGOverflow value) {
 
 const char* YGPositionTypeToString(const YGPositionType value) {
   switch (value) {
+    case YGPositionTypeStatic:
+      return "static";
     case YGPositionTypeRelative:
       return "relative";
     case YGPositionTypeAbsolute:

ReactCommon/yoga/yoga/YGEnums.h

@@ -128,7 +128,11 @@ YG_ENUM_SEQ_DECL(
     YGOverflowHidden,
     YGOverflowScroll)
 
-YG_ENUM_SEQ_DECL(YGPositionType, YGPositionTypeRelative, YGPositionTypeAbsolute)
+YG_ENUM_SEQ_DECL(
+    YGPositionType,
+    YGPositionTypeStatic,
+    YGPositionTypeRelative,
+    YGPositionTypeAbsolute)
 
 YG_ENUM_DECL(
     YGPrintOptions,