feat: add support for ornaments

Author: okwasniewski

packages/react-native/Libraries/SwiftExtensions/RCTMainWindow.swift

@@ -1,4 +1,5 @@
 import SwiftUI
+import React
 
 /**
  This SwiftUI struct returns main React Native scene. It should be used only once as it conains setup code.
@@ -7,11 +8,11 @@ import SwiftUI
  ```swift
  @main
  struct YourApp: App {
-   @UIApplicationDelegateAdaptor var delegate: AppDelegate
-   
-   var body: some Scene {
-     RCTMainWindow(moduleName: "YourApp")
-   }
+ @UIApplicationDelegateAdaptor var delegate: AppDelegate
+ 
+ var body: some Scene {
+ RCTMainWindow(moduleName: "YourApp")
+ }
  }
  ```
 
@@ -21,25 +22,47 @@ public struct RCTMainWindow: Scene {
   var moduleName: String
   var initialProps: RCTRootViewRepresentable.InitialPropsType
   var onOpenURLCallback: ((URL) -> ())?
+  var contentView: AnyView?
 
+  var rootView: RCTRootViewRepresentable {
+    RCTRootViewRepresentable(moduleName: moduleName, initialProps: initialProps)
+  }
+
   public init(moduleName: String, initialProps: RCTRootViewRepresentable.InitialPropsType = nil) {
     self.moduleName = moduleName
     self.initialProps = initialProps
+    self.contentView = AnyView(rootView)
+  }
+  
+  public init<Content: View>(
+    moduleName: String,
+    initialProps: RCTRootViewRepresentable.InitialPropsType = nil,
+    devMenuPlacement: ToolbarPlacement = .bottomBar,
+    @ViewBuilder contentView: @escaping (_ view: RCTRootViewRepresentable) -> Content
+  ) {
+    self.moduleName = moduleName
+    self.initialProps = initialProps
+    self.contentView = AnyView(contentView(rootView))
   }
 
   public var body: some Scene {
     WindowGroup {
-      RCTRootViewRepresentable(moduleName: moduleName, initialProps: initialProps)
+      contentView
         .modifier(WindowHandlingModifier())
         .onOpenURL(perform: { url in
           onOpenURLCallback?(url)
         })
+#if DEBUG
+        .toolbar {
+          DevMenuView(placement: .bottomOrnament)
+        }
+#endif
     }
   }
 }
 
 extension RCTMainWindow {
-  public func onOpenURL(perform action: @escaping (URL) -> ()) -> some Scene {
+  public func onOpenURL(perform action: @escaping (URL) -> ()) -> Self {
     var scene = self
     scene.onOpenURLCallback = action
     return scene
@@ -95,3 +118,27 @@ public struct WindowHandlingModifier: ViewModifier {
     }
   }
 }
+
+struct DevMenuView: ToolbarContent {
+  let placement: ToolbarItemPlacement
+  
+  var body: some ToolbarContent {
+    ToolbarItem(placement: placement) {
+      Button(action: {
+        RCTTriggerReloadCommandListeners("User Reload")
+      }, label: {
+        Image(systemName: "arrow.clockwise")
+      })
+    }
+    ToolbarItem(placement: placement) {
+      Button(action: {
+        NotificationCenter.default.post(
+          Notification(name: Notification.Name("RCTShowDevMenuNotification"), object: nil)
+        )
+      },
+             label: {
+        Image(systemName: "filemenu.and.selection")
+      })
+    }
+  }
+}

packages/react-native/React/Base/RCTUtils.m

@@ -592,6 +592,7 @@ BOOL RCTRunningInAppExtension(void)
     if (scene.session.role == UISceneSessionRoleImmersiveSpaceApplication) {
       continue;
     }
+    
 #endif
 
     if (scene.activationState == UISceneActivationStateForegroundActive) {
@@ -608,6 +609,24 @@ BOOL RCTRunningInAppExtension(void)
   UIScene *sceneToUse = foregroundActiveScene ? foregroundActiveScene : foregroundInactiveScene;
   UIWindowScene *windowScene = (UIWindowScene *)sceneToUse;
 
+#if TARGET_OS_VISION
+    // Ornaments are supported only on visionOS.
+    // When clicking on an ornament it becomes the keyWindow.
+    // Presenting a RN modal from ornament leads to a crash.
+    UIWindow* keyWindow = windowScene.keyWindow;
+    BOOL isOrnament = [keyWindow.debugDescription containsString:@"Ornament"];
+    if (isOrnament) {
+      for (UIWindow *window in windowScene.windows) {
+        BOOL isOrnament = [window.debugDescription containsString:@"Ornament"];
+        if (window != keyWindow && !isOrnament) {
+          return window;
+        }
+      }
+    }
+    
+    return keyWindow;
+#endif
+  
   if (@available(iOS 15.0, *)) {
     return windowScene.keyWindow;
   }