store / retrieve instanceHandle from View

Reviewed By: shergin, achen1

Differential Revision: D8074014

fbshipit-source-id: aee0d41e0e9da44e8748f47da04dcd76dbe96d8d

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

@@ -7,7 +7,9 @@
 
 package com.facebook.react.uimanager;
 
+import android.annotation.TargetApi;
 import android.content.res.Resources;
+import android.os.Build;
 import android.util.Log;
 import android.util.SparseArray;
 import android.util.SparseBooleanArray;
@@ -17,6 +19,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewParent;
 import android.widget.PopupMenu;
+import com.facebook.react.R;
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.animation.Animation;
 import com.facebook.react.animation.AnimationListener;
@@ -114,13 +117,26 @@ public class NativeViewHierarchyManager {
     mLayoutAnimationEnabled = enabled;
   }
 
+  public synchronized void updateInstanceHandle(int tag, long instanceHandle) {
+    UiThreadUtil.assertOnUiThread();
+
+    try {
+      updateInstanceHandle(resolveView(tag), instanceHandle);
+    } catch (IllegalViewOperationException e) {
+      Log.e(TAG, "Unable to update properties for view tag " + tag, e);
+    }
+  }
+
   public synchronized void updateProperties(int tag, ReactStylesDiffMap props) {
     UiThreadUtil.assertOnUiThread();
 
     try {
       ViewManager viewManager = resolveViewManager(tag);
       View viewToUpdate = resolveView(tag);
-      viewManager.updateProperties(viewToUpdate, props);
+
+      if (props != null) {
+        viewManager.updateProperties(viewToUpdate, props);
+      }
     } catch (IllegalViewOperationException e) {
       Log.e(TAG, "Unable to update properties for view tag " + tag, e);
     }
@@ -197,6 +213,28 @@ public class NativeViewHierarchyManager {
     }
   }
 
+  @TargetApi(Build.VERSION_CODES.DONUT)
+  private void updateInstanceHandle(View viewToUpdate, long instanceHandle) {
+    UiThreadUtil.assertOnUiThread();
+    viewToUpdate.setTag(R.id.view_tag_instance_handle, instanceHandle);
+  }
+
+  @Nullable
+  @TargetApi(Build.VERSION_CODES.DONUT)
+  public long getInstanceHandle(int targetTag) {
+    UiThreadUtil.assertOnUiThread();
+
+    View view = mTagsToViews.get(targetTag);
+    if (view == null) {
+      throw new IllegalArgumentException("Unable to find view for tag: " + targetTag);
+    }
+    Long tag = (Long) view.getTag(R.id.view_tag_instance_handle);
+    if (tag == null) {
+      throw new IllegalArgumentException("Unable to find instanceHandle for tag: " + targetTag);
+    }
+    return tag;
+  }
+
   private void updateLayout(View viewToUpdate, int x, int y, int width, int height) {
     if (mLayoutAnimationEnabled &&
         mLayoutAnimator.shouldAnimateLayout(viewToUpdate)) {