How to apply a modifier conditionally in a SceneBuilder?

Question

maksym-fedoriaka-cz OP

Created Dec ’22

Replies 1

Boosts 0

Views 1.3k

Participants 2

So, basically I'm trying to apply a modifier that is only available for macOS 13, while my app targets macOS 11+

Here's a piece of code that defines the macOS app with a WindowGroup

   var body: some Scene {
    WindowGroup {
      MainView(viewModel: viewModel)
        .frame(minWidth: 420.0, maxWidth: 420.0, minHeight: 600.0, maxHeight: 600.0)
    }
    .windowStyle(HiddenTitleBarWindowStyle())
  }

I would like to add this to the WindowGroup:

.windowResizability(.contentSize)

Is there a way to do this? Any approach I try, even a straight-forward one below results in a "Closure containing control flow statement cannot be used with result builder 'SceneBuilder'" build error

   var body: some Scene {
    if #available(macOS 13.0, *) {
      WindowGroup {
        MainView(viewModel: viewModel)
          .frame(minWidth: 420.0, maxWidth: 420.0, minHeight: 600.0, maxHeight: 600.0)
      }
      .windowResizability(.contentSize)
      .windowStyle(HiddenTitleBarWindowStyle())
    } else {
      WindowGroup {
        MainView(viewModel: viewModel)
          .frame(minWidth: 420.0, maxWidth: 420.0, minHeight: 600.0, maxHeight: 600.0)
      }
      .windowStyle(HiddenTitleBarWindowStyle())
    }
  }

Thanks for any suggestions

Answered by DTS Engineer in 739769022

You can do something like this:

    var body: some Scene {
        WindowGroup {
            ContentView()
        }
        .windowStyle(HiddenTitleBarWindowStyle())
        .myWindowIsContentResizable()
    }

extension Scene {
    func myWindowIsContentResizable() -> some Scene {
        if #available(macOS 13.0, *) {
            return self.windowResizability(.contentSize)
        }
        else {
            return self
        }
    }
}

Boost

Answer 1

DTS Engineer OP

Apple

Dec ’22

Accepted Answer

You can do something like this:

    var body: some Scene {
        WindowGroup {
            ContentView()
        }
        .windowStyle(HiddenTitleBarWindowStyle())
        .myWindowIsContentResizable()
    }

extension Scene {
    func myWindowIsContentResizable() -> some Scene {
        if #available(macOS 13.0, *) {
            return self.windowResizability(.contentSize)
        }
        else {
            return self
        }
    }
}

5