store / retrieve instanceHandle from View

Reviewed By: shergin, achen1

Differential Revision: D8074014

fbshipit-source-id: aee0d41e0e9da44e8748f47da04dcd76dbe96d8d

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

@@ -8,7 +8,6 @@
 package com.facebook.react.fabric;
 
 import android.util.Log;
-import android.util.SparseArray;
 import com.facebook.react.common.ArrayUtils;
 import com.facebook.react.uimanager.ReactShadowNode;
 import com.facebook.react.uimanager.UIViewOperationQueue;
@@ -118,19 +117,20 @@ public class FabricReconciler {
   }
 
   private void enqueueUpdateProperties(ReactShadowNode node) {
-    if (node.getNewProps() == null) {
-      return;
-    }
+    int reactTag = node.getReactTag();
     if (DEBUG) {
       Log.d(
           TAG,
           "manageChildren.enqueueUpdateProperties " +
-              "\n\ttag: " + node.getReactTag() +
+              "\n\ttag: " + reactTag +
               "\n\tviewClass: " + node.getViewClass() +
               "\n\tnewProps: " + node.getNewProps());
     }
-    uiViewOperationQueue.enqueueUpdateProperties(
-        node.getReactTag(), node.getViewClass(), node.getNewProps());
+
+    if (node.getNewProps() != null) {
+      uiViewOperationQueue.enqueueUpdateProperties(
+        reactTag, node.getViewClass(), node.getNewProps());
+    }
   }
 
 }

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

@@ -15,6 +15,7 @@ import android.util.Log;
 import android.view.View;
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.bridge.GuardedRunnable;
+import com.facebook.react.bridge.JavaScriptContextHolder;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
@@ -58,17 +59,22 @@ public class FabricUIManager implements UIManager, JSHandler {
   private final ReactApplicationContext mReactApplicationContext;
   private final ViewManagerRegistry mViewManagerRegistry;
   private final UIViewOperationQueue mUIViewOperationQueue;
+  private final NativeViewHierarchyManager mNativeViewHierarchyManager;
   private volatile int mCurrentBatch = 0;
-  private FabricReconciler mFabricReconciler;
+  private final FabricReconciler mFabricReconciler;
+  // TODO: Initialize new Binding (waiting for C++ implemenation to be landed)
+  private FabricBinding mBinding;
+  private JavaScriptContextHolder mContext;
 
   public FabricUIManager(
       ReactApplicationContext reactContext, ViewManagerRegistry viewManagerRegistry) {
     DisplayMetricsHolder.initDisplayMetricsIfNotInitialized(reactContext);
     mReactApplicationContext = reactContext;
     mViewManagerRegistry = viewManagerRegistry;
+    mNativeViewHierarchyManager = new NativeViewHierarchyManager(viewManagerRegistry);
     mUIViewOperationQueue =
         new UIViewOperationQueue(
-            reactContext, new NativeViewHierarchyManager(viewManagerRegistry), 0);
+            reactContext, mNativeViewHierarchyManager, 0);
     mFabricReconciler = new FabricReconciler(mUIViewOperationQueue);
   }
 
@@ -483,4 +489,14 @@ public class FabricUIManager implements UIManager, JSHandler {
     // -> call to C++
   }
 
+  public long createEventTarget(int targetTag) throws IllegalStateException {
+    long instanceHandle = mNativeViewHierarchyManager.getInstanceHandle(targetTag);
+    if (instanceHandle == 0) {
+      throw new IllegalStateException("View with targetTag " + targetTag + " does not exist.");
+    }
+
+    // TODO: uncomment after diff including Binding is landed
+    // return mBinding.createEventTarget(mContext.get(), instanceHandle);
+    return 0;
+  }
 }

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)) {

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

@@ -96,6 +96,22 @@ public class UIViewOperationQueue {
     }
   }
 
+
+  private final class UpdateInstanceHandleOperation extends ViewOperation {
+
+    private final long mInstanceHandle;
+
+    private UpdateInstanceHandleOperation(int tag, long instanceHandle) {
+      super(tag);
+      mInstanceHandle = instanceHandle;
+    }
+
+    @Override
+    public void execute() {
+      mNativeViewHierarchyManager.updateInstanceHandle(mTag, mInstanceHandle);
+    }
+  }
+
   /**
    * Operation for updating native view's position and size. The operation is not created directly
    * by a {@link UIManagerModule} call from JS. Instead it gets inflated using computed position
@@ -682,6 +698,10 @@ public class UIViewOperationQueue {
     }
   }
 
+  public void enqueueUpdateInstanceHandle(int reactTag, long instanceHandle) {
+    mOperations.add(new UpdateInstanceHandleOperation(reactTag, instanceHandle));
+  }
+
   public void enqueueUpdateProperties(int reactTag, String className, ReactStylesDiffMap props) {
     mOperations.add(new UpdatePropertiesOperation(reactTag, props));
   }

ReactAndroid/src/main/res/views/uimanager/values/ids.xml

@@ -5,4 +5,7 @@
 
   <!-- tag is used to store the nativeID tag -->
   <item type="id" name="view_tag_native_id"/>
+
+  <!-- tag is used to store the nativeID tag -->
+  <item type="id" name="view_tag_instance_handle"/>
 </resources>

ReactAndroid/src/test/java/com/facebook/react/fabric/FabricReconcilerTest.java

@@ -109,6 +109,7 @@ public class FabricReconcilerTest {
       node = new ReactShadowNodeImpl();
     }
     node.setReactTag(tag);
+    node.setViewClassName("View");
     node.setThemedContext(mock(ThemedReactContext.class));
     return node;
   }