Fabric: ContextContainer initialization was moved to RCTSurfacePresenter

Summary:
Several reasons:

* We are fulfilling a promise that RCTScheduler is just a very thin interop proxy between C++ and Objective-C;
* We have to pass all parameters down to Scheduler anyway, so instead of creating all of them separately and then passing one-by-one, we consolidate them into Context created where we have all those values.

In the future, we probably will move it to some dedicated place.

Reviewed By: mdvacca

Differential Revision: D9884892

fbshipit-source-id: f1d5744e4044bc4bdfe53ec9a97ee61dcf0c60c2

React/Fabric/RCTScheduler.h

@@ -37,6 +37,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 @property (atomic, weak, nullable) id<RCTSchedulerDelegate> delegate;
 
+- (instancetype)initWithContextContainer:(std::shared_ptr<void>)contextContatiner;
+
 - (void)registerRootTag:(ReactTag)tag;
 
 - (void)unregisterRootTag:(ReactTag)tag;

React/Fabric/RCTScheduler.mm

@@ -7,28 +7,18 @@
 
 #import "RCTScheduler.h"
 
-#import <fabric/imagemanager/ImageManager.h>
 #import <fabric/uimanager/ContextContainer.h>
 #import <fabric/uimanager/Scheduler.h>
 #import <fabric/uimanager/SchedulerDelegate.h>
-#import <React/RCTImageLoader.h>
-#import <React/RCTBridge+Private.h>
 
-#import "MainRunLoopEventBeat.h"
-#import "MessageQueueEventBeat.h"
 #import "RCTConversions.h"
 
-@interface RCTBridge ()
-
-- (std::shared_ptr<facebook::react::MessageQueueThread>)jsMessageThread;
-
-@end
-
 using namespace facebook::react;
 
 class SchedulerDelegateProxy: public SchedulerDelegate {
 public:
-  SchedulerDelegateProxy(void *scheduler): scheduler_(scheduler) {}
+  SchedulerDelegateProxy(void *scheduler):
+    scheduler_(scheduler) {}
 
   void schedulerDidFinishTransaction(Tag rootTag, const ShadowViewMutationList &mutations) override {
     RCTScheduler *scheduler = (__bridge RCTScheduler *)scheduler_;
@@ -49,30 +39,11 @@ private:
   std::shared_ptr<SchedulerDelegateProxy> _delegateProxy;
 }
 
-- (instancetype)init
+- (instancetype)initWithContextContainer:(std::shared_ptr<void>)contextContatiner
 {
   if (self = [super init]) {
     _delegateProxy = std::make_shared<SchedulerDelegateProxy>((__bridge void *)self);
-
-    RCTBridge *bridge = [RCTBridge currentBridge];
-
-    SharedContextContainer contextContainer = std::make_shared<ContextContainer>();
-
-    EventBeatFactory synchronousBeatFactory = [bridge]() {
-      return std::make_unique<MainRunLoopEventBeat>(bridge.jsMessageThread);
-    };
-
-    EventBeatFactory asynchronousBeatFactory = [bridge]() {
-      return std::make_unique<MessageQueueEventBeat>(bridge.jsMessageThread);
-    };
-
-    contextContainer->registerInstance<EventBeatFactory>(synchronousBeatFactory, "synchronous");
-    contextContainer->registerInstance<EventBeatFactory>(asynchronousBeatFactory, "asynchronous");
-
-    void *imageLoader = (__bridge void *)[[RCTBridge currentBridge] imageLoader];
-    contextContainer->registerInstance(std::make_shared<ImageManager>(imageLoader));
-
-    _scheduler = std::make_shared<Scheduler>(contextContainer);
+    _scheduler = std::make_shared<Scheduler>(std::static_pointer_cast<ContextContainer>(contextContatiner));
     _scheduler->setDelegate(_delegateProxy.get());
   }
 

React/Fabric/RCTSurfacePresenter.mm

@@ -11,6 +11,7 @@
 #import <React/RCTBridge+Private.h>
 #import <React/RCTComponentViewRegistry.h>
 #import <React/RCTFabricSurface.h>
+#import <React/RCTImageLoader.h>
 #import <React/RCTMountingManager.h>
 #import <React/RCTMountingManagerDelegate.h>
 #import <React/RCTScheduler.h>
@@ -20,11 +21,19 @@
 #import <React/RCTUtils.h>
 #import <fabric/core/LayoutContext.h>
 #import <fabric/core/LayoutConstraints.h>
+#import <fabric/imagemanager/ImageManager.h>
+#import <fabric/uimanager/ContextContainer.h>
 
+#import "MainRunLoopEventBeat.h"
+#import "MessageQueueEventBeat.h"
 #import "RCTConversions.h"
 
 using namespace facebook::react;
 
+@interface RCTBridge ()
+- (std::shared_ptr<facebook::react::MessageQueueThread>)jsMessageThread;
+@end
+
 @interface RCTSurfacePresenter () <RCTSchedulerDelegate, RCTMountingManagerDelegate>
 @end
 
@@ -42,7 +51,25 @@ using namespace facebook::react;
     _bridge = bridge;
     _batchedBridge = [_bridge batchedBridge] ?: _bridge;
 
-    _scheduler = [[RCTScheduler alloc] init];
+    auto contextContainer = std::make_shared<ContextContainer>();
+
+    auto messageQueueThread = _batchedBridge.jsMessageThread;
+
+    EventBeatFactory synchronousBeatFactory = [messageQueueThread]() {
+      return std::make_unique<MainRunLoopEventBeat>(messageQueueThread);
+    };
+
+    EventBeatFactory asynchronousBeatFactory = [messageQueueThread]() {
+      return std::make_unique<MessageQueueEventBeat>(messageQueueThread);
+    };
+
+    contextContainer->registerInstance<EventBeatFactory>(synchronousBeatFactory, "synchronous");
+    contextContainer->registerInstance<EventBeatFactory>(asynchronousBeatFactory, "asynchronous");
+
+    void *imageLoader = (__bridge void *)[[RCTBridge currentBridge] imageLoader];
+    contextContainer->registerInstance(std::make_shared<ImageManager>(imageLoader));
+
+    _scheduler = [[RCTScheduler alloc] initWithContextContainer:contextContainer];
     _scheduler.delegate = self;
 
     _surfaceRegistry = [[RCTSurfaceRegistry alloc] init];