Allow installing JS binding via the RN Android bridge

Reviewed By: fkgozali

Differential Revision: D6979072

fbshipit-source-id: 8b4ac3769496a6a6fe3dd9ee2aac64b66604c413

ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java

@@ -45,13 +45,13 @@ import com.facebook.debug.tags.ReactDebugOverlayTags;
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.infer.annotation.ThreadConfined;
 import com.facebook.infer.annotation.ThreadSafe;
+import com.facebook.react.bridge.BridgeListener;
 import com.facebook.react.bridge.CatalystInstance;
 import com.facebook.react.bridge.CatalystInstanceImpl;
 import com.facebook.react.bridge.JSBundleLoader;
 import com.facebook.react.bridge.JavaJSExecutor;
 import com.facebook.react.bridge.JavaScriptExecutor;
 import com.facebook.react.bridge.JavaScriptExecutorFactory;
-import com.facebook.react.bridge.NativeArray;
 import com.facebook.react.bridge.NativeModuleCallExceptionHandler;
 import com.facebook.react.bridge.NativeModuleRegistry;
 import com.facebook.react.bridge.NotThreadSafeBridgeIdleDebugListener;
@@ -124,6 +124,7 @@ public class ReactInstanceManager {
      */
     void onReactContextInitialized(ReactContext context);
   }
+
   private final List<ReactRootView> mAttachedRootViews = Collections.synchronizedList(
     new ArrayList<ReactRootView>());
 
@@ -156,6 +157,7 @@ public class ReactInstanceManager {
   private final @Nullable NativeModuleCallExceptionHandler mNativeModuleCallExceptionHandler;
   private final boolean mLazyNativeModulesEnabled;
   private final boolean mDelayViewManagerClassLoadsEnabled;
+  private final @Nullable BridgeListener mBridgeListener;
 
   private class ReactContextInitParams {
     private final JavaScriptExecutorFactory mJsExecutorFactory;
@@ -203,7 +205,8 @@ public class ReactInstanceManager {
     boolean delayViewManagerClassLoadsEnabled,
     @Nullable DevBundleDownloadListener devBundleDownloadListener,
     int minNumShakes,
-      int minTimeLeftInFrameForNonBatchedOperationMs) {
+    int minTimeLeftInFrameForNonBatchedOperationMs,
+    @Nullable BridgeListener bridgeListener) {
     Log.d(ReactConstants.TAG, "ReactInstanceManager.ctor()");
     initializeSoLoaderIfNecessary(applicationContext);
 
@@ -252,6 +255,7 @@ public class ReactInstanceManager {
       }
       mPackages.addAll(packages);
     }
+    mBridgeListener = bridgeListener;
 
     // Instantiate ReactChoreographer in UI thread.
     ReactChoreographer.initialize();
@@ -1100,7 +1104,8 @@ public class ReactInstanceManager {
       .setJSExecutor(jsExecutor)
       .setRegistry(nativeModuleRegistry)
       .setJSBundleLoader(jsBundleLoader)
-      .setNativeModuleCallExceptionHandler(exceptionHandler);
+      .setNativeModuleCallExceptionHandler(exceptionHandler)
+      .setBridgeListener(mBridgeListener);
 
     ReactMarker.logMarker(CREATE_CATALYST_INSTANCE_START);
     // CREATE_CATALYST_INSTANCE_END is in JSCExecutor.cpp

ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManagerBuilder.java

@@ -7,6 +7,8 @@ import static com.facebook.react.modules.systeminfo.AndroidInfoHelpers.getFriend
 import android.app.Activity;
 import android.app.Application;
 import com.facebook.infer.annotation.Assertions;
+import com.facebook.react.bridge.BridgeListener;
+import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.JSBundleLoader;
 import com.facebook.react.bridge.JSCJavaScriptExecutorFactory;
 import com.facebook.react.bridge.JavaScriptExecutorFactory;
@@ -48,6 +50,7 @@ public class ReactInstanceManagerBuilder {
   private @Nullable JavaScriptExecutorFactory mJavaScriptExecutorFactory;
   private int mMinNumShakes = 1;
   private int mMinTimeLeftInFrameForNonBatchedOperationMs = -1;
+  private @Nullable BridgeListener mBridgeListener;
 
   /* package protected */ ReactInstanceManagerBuilder() {
   }
@@ -62,6 +65,12 @@ public class ReactInstanceManagerBuilder {
     return this;
   }
 
+  public ReactInstanceManagerBuilder setBridgeListener(
+    @Nullable BridgeListener listener) {
+    mBridgeListener = listener;
+    return this;
+  }
+
   /**
    * Factory for desired implementation of JavaScriptExecutor.
    */
@@ -280,6 +289,7 @@ public class ReactInstanceManagerBuilder {
         mDelayViewManagerClassLoadsEnabled,
         mDevBundleDownloadListener,
         mMinNumShakes,
-        mMinTimeLeftInFrameForNonBatchedOperationMs);
+        mMinTimeLeftInFrameForNonBatchedOperationMs,
+        mBridgeListener);
   }
 }

ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java

@@ -16,6 +16,7 @@ import java.util.List;
 import android.app.Application;
 
 import com.facebook.infer.annotation.Assertions;
+import com.facebook.react.bridge.BridgeListener;
 import com.facebook.react.bridge.JavaScriptExecutorFactory;
 import com.facebook.react.bridge.ReactMarker;
 import com.facebook.react.bridge.ReactMarkerConstants;
@@ -76,6 +77,7 @@ public abstract class ReactNativeHost {
       .setRedBoxHandler(getRedBoxHandler())
       .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
       .setUIImplementationProvider(getUIImplementationProvider())
+      .setBridgeListener(getBridgeListener())
       .setInitialLifecycleState(LifecycleState.BEFORE_CREATE);
 
     for (ReactPackage reactPackage : getPackages()) {
@@ -122,6 +124,10 @@ public abstract class ReactNativeHost {
     return new UIImplementationProvider();
   }
 
+  protected @Nullable BridgeListener getBridgeListener() {
+    return null;
+  }
+
   /**
    * Returns the name of the main module. Determines the URL used to fetch the JS bundle
    * from the packager server. It is only used when dev support is enabled.

ReactAndroid/src/main/java/com/facebook/react/bridge/BridgeListener.java

@@ -0,0 +1,14 @@
+package com.facebook.react.bridge;
+
+/**
+ * Interface to listen to bridge events.
+ */
+public interface BridgeListener {
+
+  /**
+   * Called right after the RN Bridge is initialized
+   * @param catalystInstance {@link CatalystInstance} bridge
+   */
+  void onBridgeStarted(CatalystInstance catalystInstance);
+
+}

ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstanceImpl.java

@@ -100,7 +100,8 @@ public class CatalystInstanceImpl implements CatalystInstance {
       final JavaScriptExecutor jsExecutor,
       final NativeModuleRegistry nativeModuleRegistry,
       final JSBundleLoader jsBundleLoader,
-      NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler) {
+      NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler,
+      final BridgeListener bridgeListener) {
     Log.d(ReactConstants.TAG, "Initializing React Xplat Bridge.");
     mHybridData = initHybrid();
 
@@ -126,6 +127,9 @@ public class CatalystInstanceImpl implements CatalystInstance {
     Log.d(ReactConstants.TAG, "Initializing React Xplat Bridge after initializeBridge");
 
     mJavaScriptContextHolder = new JavaScriptContextHolder(getJavaScriptContext());
+    if (bridgeListener != null) {
+      bridgeListener.onBridgeStarted(this);
+    }
   }
 
   private static class BridgeCallback implements ReactCallback {
@@ -134,8 +138,8 @@ public class CatalystInstanceImpl implements CatalystInstance {
     // and determine there's an inaccessible cycle.
     private final WeakReference<CatalystInstanceImpl> mOuter;
 
-    public BridgeCallback(CatalystInstanceImpl outer) {
-      mOuter = new WeakReference<CatalystInstanceImpl>(outer);
+    BridgeCallback(CatalystInstanceImpl outer) {
+      mOuter = new WeakReference<>(outer);
     }
 
     @Override
@@ -553,6 +557,8 @@ public class CatalystInstanceImpl implements CatalystInstance {
     private @Nullable NativeModuleRegistry mRegistry;
     private @Nullable JavaScriptExecutor mJSExecutor;
     private @Nullable NativeModuleCallExceptionHandler mNativeModuleCallExceptionHandler;
+    private @Nullable BridgeListener mBridgeListener;
+
 
     public Builder setReactQueueConfigurationSpec(
         ReactQueueConfigurationSpec ReactQueueConfigurationSpec) {
@@ -581,13 +587,20 @@ public class CatalystInstanceImpl implements CatalystInstance {
       return this;
     }
 
+    public Builder setBridgeListener(
+      BridgeListener listener) {
+      mBridgeListener = listener;
+      return this;
+    }
+
     public CatalystInstanceImpl build() {
       return new CatalystInstanceImpl(
           Assertions.assertNotNull(mReactQueueConfigurationSpec),
           Assertions.assertNotNull(mJSExecutor),
           Assertions.assertNotNull(mRegistry),
           Assertions.assertNotNull(mJSBundleLoader),
-          Assertions.assertNotNull(mNativeModuleCallExceptionHandler));
+          Assertions.assertNotNull(mNativeModuleCallExceptionHandler),
+          mBridgeListener);
     }
   }
 }