Refactor ReactShadowNode to add emoji support for TextInput and Fabric

Summary:
This diff refactors support of emojis in RN classic in order to make it easy to extend support for text input and fabric (as part of this stack)

changelog:[internal]

Reviewed By: JoshuaGross

Differential Revision: D19679394

fbshipit-source-id: 45eff49800b3db281721088f107494005d390fff

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

@@ -66,6 +66,8 @@ public abstract class ReactBaseTextShadowNode extends LayoutShadowNode {
 
   public static final int DEFAULT_TEXT_SHADOW_COLOR = 0x55000000;
 
+  protected @Nullable ReactTextViewManagerCallback mReactTextViewManagerCallback;
+
   private static class SetSpanOperation {
     protected int start, end;
     protected ReactSpan what;
@@ -313,6 +315,10 @@ protected Spannable spannedFromShadowNode(
     textShadowNode.mTextAttributes.setHeightOfTallestInlineViewOrImage(
         heightOfTallestInlineViewOrImage);
 
+    if (mReactTextViewManagerCallback != null) {
+      mReactTextViewManagerCallback.onPostProcessSpannable(sb);
+    }
+
     return sb;
   }
 
@@ -379,7 +385,13 @@ protected Spannable spannedFromShadowNode(
   protected Map<Integer, ReactShadowNode> mInlineViews;
 
   public ReactBaseTextShadowNode() {
+    this(null);
+  }
+
+  public ReactBaseTextShadowNode(
+      @Nullable ReactTextViewManagerCallback reactTextViewManagerCallback) {
     mTextAttributes = new TextAttributes();
+    mReactTextViewManagerCallback = reactTextViewManagerCallback;
   }
 
   // Return text alignment according to LTR or RTL style

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

@@ -57,8 +57,6 @@ public class ReactTextShadowNode extends ReactBaseTextShadowNode {
 
   private boolean mShouldNotifyOnTextLayout;
 
-  private @Nullable ReactTextViewManagerCallback mReactTextViewManagerCallback = null;
-
   private final YogaMeasureFunction mTextMeasureFunction =
       new YogaMeasureFunction() {
         @Override
@@ -189,6 +187,11 @@ public long measure(
       };
 
   public ReactTextShadowNode() {
+    this(null);
+  }
+
+  public ReactTextShadowNode(@Nullable ReactTextViewManagerCallback reactTextViewManagerCallback) {
+    super(reactTextViewManagerCallback);
     initMeasureFunction();
   }
 
@@ -198,10 +201,6 @@ private void initMeasureFunction() {
     }
   }
 
-  public void setReactTextViewManagerCallback(ReactTextViewManagerCallback callback) {
-    mReactTextViewManagerCallback = callback;
-  }
-
   // Return text alignment according to LTR or RTL style
   private int getTextAlign() {
     int textAlign = mTextAlign;
@@ -223,9 +222,6 @@ public void onBeforeLayout(NativeViewHierarchyOptimizer nativeViewHierarchyOptim
             /* text (e.g. from `value` prop): */ null,
             /* supportsInlineViews: */ true,
             nativeViewHierarchyOptimizer);
-    if (mReactTextViewManagerCallback != null) {
-      mReactTextViewManagerCallback.onPostProcessSpannable(mPreparedSpannableText);
-    }
     markUpdated();
   }
 

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

@@ -34,6 +34,8 @@ public class ReactTextViewManager
 
   @VisibleForTesting public static final String REACT_CLASS = "RCTText";
 
+  protected @Nullable ReactTextViewManagerCallback mReactTextViewManagerCallback;
+
   @Override
   public String getName() {
     return REACT_CLASS;
@@ -59,6 +61,11 @@ public ReactTextShadowNode createShadowNodeInstance() {
     return new ReactTextShadowNode();
   }
 
+  public ReactTextShadowNode createShadowNodeInstance(
+      @Nullable ReactTextViewManagerCallback reactTextViewManagerCallback) {
+    return new ReactTextShadowNode(reactTextViewManagerCallback);
+  }
+
   @Override
   public Class<ReactTextShadowNode> getShadowNodeClass() {
     return ReactTextShadowNode.class;