Consider introspecting UIWindowScene

[gongzhang]

UIWindowScene contains a lot of contextual information about the current window, and SwiftUI currently has no corresponding API to get this environment information. Therefore, I propose to support getting the parent UIWindowScene from a View.

Code snippets that may be useful:

struct SomeIntrospectionHelperView: UIViewRepresentable {
    
    func makeUIView(context: Context) -> UnderlyingView {
        UnderlyingView()
    }
    
    func updateUIView(_ view: UnderlyingView, context: Context) {
        
    }
    
    class UnderlyingView: UIView {
        
        init() {
            super.init(frame: .zero)
        }
        
        required init?(coder: NSCoder) {
            super.init(frame: .zero)
        }
        
        override func willMove(toWindow newWindow: UIWindow?) {
            super.willMove(toWindow: newWindow)
            if let scene = newWindow?.windowScene {
                // we got window scene here, 👀 callback introspect delegate...
            }
        }
    }
    
}

[davdroman]

I'll be looking into this soon.

[davdroman]

Hi @gongzhang, this is now implemented in master and will be available in the next version (0.7.0) of the new SwiftUIIntrospect module. Here's a sample:

import SwiftUI
import SwiftUIIntrospect

struct ContentView: View {
    var body: some View {
        Text("Content")
            .introspect(.window, on: .iOS(.v13, .v14, .v15, .v16, .v17)) { window in
                // do something with window or window.windowScene
            }
    }
}

I'll close this discussion for now. Let me know if you have any questions.

[gongzhang]

Wow, this API is really cool. Thank you!