Make RN Events registered disregarding ViewManager use pattern.

Reviewed By: fromcelticpark

Differential Revision: D6260009

fbshipit-source-id: f3d00162f8473976264ebef040d01163950f2170

Libraries/ReactNative/requireNativeComponent.js

@@ -12,6 +12,7 @@
  */
 'use strict';
 
+const Platform = require('Platform');
 const ReactNativeBridgeEventPlugin = require('ReactNativeBridgeEventPlugin');
 const ReactNativeStyleAttributes = require('ReactNativeStyleAttributes');
 const UIManager = require('UIManager');
@@ -47,35 +48,30 @@ const warning = require('fbjs/lib/warning');
  */
 import type {ComponentInterface} from 'verifyPropTypes';
 
+let hasAttachedDefaultEventTypes: boolean = false;
+
 function requireNativeComponent(
   viewName: string,
   componentInterface?: ?ComponentInterface,
   extraConfig?: ?{nativeOnly?: Object},
 ): React$ComponentType<any> | string {
-  function attachBubblingEventTypes(viewConfig) {
-    if (UIManager.genericBubblingEventTypes) {
-      viewConfig.bubblingEventTypes = merge(
-        viewConfig.bubblingEventTypes,
-        UIManager.genericBubblingEventTypes,
-      );
-      // As genericBubblingEventTypes do not change over time, and there's
-      // merge of all the events happening in Fiber, we need to pass
-      // genericBubblingEventTypes to Fiber only once. Therefore, we can delete
-      // it and forget about it.
-      delete UIManager.genericBubblingEventTypes;
-    }
-  }
-
-  function attachDirectEventTypes(viewConfig) {
-    if (UIManager.genericDirectEventTypes) {
-      viewConfig.directEventTypes = merge(
-        viewConfig.directEventTypes,
-        UIManager.genericDirectEventTypes,
-      );
-      // As genericDirectEventTypes do not change over time, and there's merge
-      // of all the events happening in Fiber, we need to pass genericDirectEventTypes
-      // to Fiber only once. Therefore, we can delete it and forget about it.
-      delete UIManager.genericDirectEventTypes;
+  function attachDefaultEventTypes(viewConfig: any) {
+    if (Platform.OS === 'android') {
+      // This is supported on Android platform only,
+      // as lazy view managers discovery is Android-specific.
+      if (UIManager.ViewManagerNames) {
+        // Lazy view managers enabled.
+        viewConfig = merge(viewConfig, UIManager.getDefaultEventTypes());
+      } else {
+        viewConfig.bubblingEventTypes = merge(
+          viewConfig.bubblingEventTypes,
+          UIManager.genericBubblingEventTypes,
+        );
+        viewConfig.directEventTypes = merge(
+          viewConfig.directEventTypes,
+          UIManager.genericDirectEventTypes,
+        );
+      }
     }
   }
 
@@ -184,8 +180,10 @@ function requireNativeComponent(
         );
     }
 
-    attachBubblingEventTypes(viewConfig);
-    attachDirectEventTypes(viewConfig);
+    if (!hasAttachedDefaultEventTypes) {
+      attachDefaultEventTypes(viewConfig);
+      hasAttachedDefaultEventTypes = true;
+    }
 
     // Register this view's event types with the ReactNative renderer.
     // This enables view managers to be initialized lazily, improving perf,

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

@@ -17,7 +17,6 @@ import android.content.res.Configuration;
 import com.facebook.common.logging.FLog;
 import com.facebook.debug.holder.PrinterHolder;
 import com.facebook.debug.tags.ReactDebugOverlayTags;
-import com.facebook.proguard.annotations.DoNotStrip;
 import com.facebook.react.animation.Animation;
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.Callback;
@@ -43,7 +42,7 @@ import java.util.List;
 import java.util.Map;
 import javax.annotation.Nullable;
 
-  /**
+/**
  * <p>Native module to allow JS to create and update native Views.</p>
  *
  * <p>
@@ -115,11 +114,6 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
 
   private int mBatchId = 0;
 
-  // Defines if events were already exported to JS. We do not send them more
-  // than once as they are stored and mixed in with Fiber for every ViewManager
-  // on JS side.
-  private boolean mEventsWereSentToJS = false;
-
   public UIManagerModule(
       ReactApplicationContext reactContext,
       ViewManagerResolver viewManagerResolver,
@@ -233,7 +227,6 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
     }
   }
 
-  @DoNotStrip
   @ReactMethod(isBlockingSynchronousMethod = true)
   public @Nullable WritableMap getConstantsForViewManager(final String viewManagerName) {
     ViewManager targetView =
@@ -249,13 +242,8 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
     try {
       Map<String, Object> viewManagerConstants =
           UIManagerModuleConstantsHelper.createConstantsForViewManager(
-              targetView,
-              mEventsWereSentToJS ? null : UIManagerModuleConstants.getBubblingEventTypeConstants(),
-              mEventsWereSentToJS ? null : UIManagerModuleConstants.getDirectEventTypeConstants(),
-              null,
-              mCustomDirectEvents);
+              targetView, null, null, null, mCustomDirectEvents);
       if (viewManagerConstants != null) {
-        mEventsWereSentToJS = true;
         return Arguments.makeNativeMap(viewManagerConstants);
       }
       return null;
@@ -264,9 +252,12 @@ public class UIManagerModule extends ReactContextBaseJavaModule implements
     }
   }
 
-  /**
-   * Resolves Direct Event name exposed to JS from the one known to the Native side.
-   */
+  @ReactMethod(isBlockingSynchronousMethod = true)
+  public WritableMap getDefaultEventTypes() {
+    return Arguments.makeNativeMap(UIManagerModuleConstantsHelper.getDefaultExportableEventTypes());
+  }
+
+  /** Resolves Direct Event name exposed to JS from the one known to the Native side. */
   public CustomEventNamesResolver getDirectEventNamesResolver() {
     return new CustomEventNamesResolver() {
       @Override

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

@@ -24,6 +24,9 @@ import javax.annotation.Nullable;
  */
 /* package */ class UIManagerModuleConstantsHelper {
 
+  private static final String BUBBLING_EVENTS_KEY = "bubblingEventTypes";
+  private static final String DIRECT_EVENTS_KEY = "directEventTypes";
+
   /**
    * Generates a lazy discovery enabled version of {@link UIManagerModule} constants. It only
    * contains a list of view manager names, so that JS side is aware of the managers there are.
@@ -38,6 +41,12 @@ import javax.annotation.Nullable;
     return constants;
   }
 
+  /* package */ static Map<String, Object> getDefaultExportableEventTypes() {
+    return MapBuilder.<String, Object>of(
+        BUBBLING_EVENTS_KEY, UIManagerModuleConstants.getBubblingEventTypeConstants(),
+        DIRECT_EVENTS_KEY, UIManagerModuleConstants.getDirectEventTypeConstants());
+  }
+
   /**
    * Generates map of constants that is then exposed by {@link UIManagerModule}.
    * Provided list of {@param viewManagers} is then used to populate content of
@@ -106,9 +115,6 @@ import javax.annotation.Nullable;
       @Nullable Map defaultDirectEvents,
       @Nullable Map cumulativeBubblingEventTypes,
       @Nullable Map cumulativeDirectEventTypes) {
-    final String BUBBLING_EVENTS_KEY = "bubblingEventTypes";
-    final String DIRECT_EVENTS_KEY = "directEventTypes";
-
     Map<String, Object> viewManagerConstants = MapBuilder.newHashMap();
 
     Map viewManagerBubblingEvents = viewManager.getExportedCustomBubblingEventTypeConstants();