Add WindowReader SwiftUI view

README.md

@@ -78,6 +78,24 @@ struct SettingsView: View, DestinationView {
 }
 ```
 
+### Using with SwiftUI Lifecycle
+
+If using with a project that only has a SwiftUI lifecycle, you don't have a SceneDelegate to hook into. For this case we've created a helper `WindowReader` view that will expose the view so you can create your navigation object:
+
+```swift
+@main
+struct ExampleApp: App {
+    var body: some Scene {
+        WindowGroup {
+            WindowReader { window in
+                ExampleView()
+                    .environmentObject(Navigation(window: window!))
+            }
+        }
+    }
+}
+```
+
 ## FAQ
 
 #### Can I present a ViewController - i.e. a SFSafariViewController?

Sources/XNavigation/SwiftUI/WindowReader.swift

@@ -0,0 +1,30 @@
+//
+//  WindowReader.swift
+//  XNavigation
+//
+//  Created by David Chavez on 24.12.21.
+//  Copyright © 2021 Double Symmetry UG. All rights reserved.
+//
+
+import SwiftUI
+
+@frozen public struct WindowReader<Content>: View where Content: View {
+    private var content: (UIWindow?) -> Content
+
+    private var window: UIWindow? {
+        guard let scene = UIApplication.shared.connectedScenes.first,
+              let windowSceneDelegate = scene.delegate as? UIWindowSceneDelegate,
+              let window = windowSceneDelegate.window else {
+                  return nil
+              }
+        return window
+    }
+
+    public init(@ViewBuilder content: @escaping (UIWindow?) -> Content) {
+        self.content = content
+    }
+
+    public var body: some View {
+        content(window)
+    }
+}