SwiftUI 2: the way to open view in new window

Question

Lets imagine that I have an App

var storeVM = BookStoreViewModel(bla1: bla1, bla2: bla2, bla3: bla3)

@SceneBuilder var body: some Scene {
    WindowGroup {
              


        

Answer 1

Try something like the following (just idea - cannot test)

class BookViewModel: ObservableObject {} 

class AppState: ObservableObject {
    @Published var selectedBook: BookViewModel?
}

@main
struct SwiftUI2_MacApp: App {
    @StateObject var appState = AppState()

    @SceneBuilder 
    var body: some Scene {
        WindowGroup {         // main scene
            ContentView()
              .environmentObject(appState)   // inject to update
                                             // selected book
        }

        WindowGroup("Book Viewer") { // other scene
            if appState.selectedBook != nil {
                Book(model: appState.selectedBook)
            }
        }
    }
}