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[iOS] RNTester enable concurrent root when using Fabric #41166

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[iOS] RNTester enable concurrent root when using Fabric #41166

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[iOS] RNTester enable concurrent root when using Fabric
zhongwuzw Oct 24, 2023
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Merge commit '833d589a683793aec4b54d05a4b2748ee9064581' into features…
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2 changes: 0 additions & 2 deletions packages/react-native/Libraries/AppDelegate/RCTAppDelegate.h
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Original file line number Diff line number Diff line change
Expand Up @@ -101,8 +101,6 @@
* By default, it assigns the rootView to the view property of the rootViewController
* If you are not using a simple UIViewController, then there could be other methods to use to setup the rootView.
* For example: UISplitViewController requires `setViewController(_:for:)`
*
* @return: void
*/
- (void)setRootView:(UIView *)rootView toRootViewController:(UIViewController *)rootViewController;

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28 changes: 17 additions & 11 deletions packages/react-native/Libraries/AppDelegate/RCTAppDelegate.mm
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Expand Up @@ -42,6 +42,19 @@

static NSString *const kRNConcurrentRoot = @"concurrentRoot";

static NSDictionary *updateInitialProps(NSDictionary *initialProps, BOOL isFabricEnabled)
{
#ifdef RCT_NEW_ARCH_ENABLED
NSMutableDictionary *mutableProps = [initialProps mutableCopy] ?: [NSMutableDictionary new];
// Hardcoding the Concurrent Root as it it not recommended to
// have the concurrentRoot turned off when Fabric is enabled.
mutableProps[kRNConcurrentRoot] = @(isFabricEnabled);
return mutableProps;
#else
return initialProps;
#endif
}

@interface RCTAppDelegate () <
RCTTurboModuleManagerDelegate,
RCTComponentViewFactoryComponentProvider,
Expand Down Expand Up @@ -100,7 +113,7 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
[self createReactHost];
[self unstable_registerLegacyComponents];
[RCTComponentViewFactory currentComponentViewFactory].thirdPartyFabricComponentsProvider = self;
NSDictionary *initProps = [self prepareInitialProps];
NSDictionary *initProps = updateInitialProps([self prepareInitialProps], [self fabricEnabled]);
RCTFabricSurface *surface = [_reactHost createSurfaceWithModuleName:self.moduleName initialProperties:initProps];

RCTSurfaceHostingProxyRootView *surfaceHostingProxyRootView = [[RCTSurfaceHostingProxyRootView alloc]
Expand All @@ -121,7 +134,8 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
[self unstable_registerLegacyComponents];
[RCTComponentViewFactory currentComponentViewFactory].thirdPartyFabricComponentsProvider = self;
#endif
NSDictionary *initProps = [self prepareInitialProps];
NSDictionary *initProps = updateInitialProps([self prepareInitialProps], [self fabricEnabled]);
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rootView = [self createRootViewWithBridge:self.bridge moduleName:self.moduleName initProps:initProps];
}
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
Expand All @@ -143,15 +157,7 @@ - (NSURL *)sourceURLForBridge:(RCTBridge *)bridge

- (NSDictionary *)prepareInitialProps
{
NSMutableDictionary *initProps = self.initialProps ? [self.initialProps mutableCopy] : [NSMutableDictionary new];

#ifdef RCT_NEW_ARCH_ENABLED
// Hardcoding the Concurrent Root as it it not recommended to
// have the concurrentRoot turned off when Fabric is enabled.
initProps[kRNConcurrentRoot] = @([self fabricEnabled]);
#endif

return initProps;
return self.initialProps;
}

- (RCTBridge *)createBridgeWithDelegate:(id<RCTBridgeDelegate>)delegate launchOptions:(NSDictionary *)launchOptions
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