Swiftui Progress View Hidden

Hello I want to make undetermined Progress View on bar button item. when its done I want to make it hidden, but the hidden() method doesn't have parameter like disabled(Bool). how can I hide the progress view when the task getting done?

This is what I want

I don't know how to hide it programmatically on swiftui because it has no parameter.

this is the code

.navigationBarItems(leading:
   Button(action: {
      self.presentationMode.wrappedValue.dismiss()
   }, label: {
        Text("Cancel")
            .foregroundColor(.orange)
    })
 , trailing:
    //this should be hidden when the work done not always
    ProgressView()
        .hidden()
  )

You can create that ViewExtension

extension View {
    @ViewBuilder func isHidden(_ isHidden: Bool) -> some View {
        if isHidden {
            self.hidden()
        } else {
            self
        }
    }
}

And then dynamically hide the view:

struct ContentView : View {
    
    @State var isHidden = false
    
    var body : some View {
        
        NavigationView {
            VStack {
                Text("Hello World")
            
                Button(action: {
                    self.isHidden.toggle()
                })
                {
                    Text("Change loading")
                }
            }
            .navigationBarItems(leading:
               Button(action: {
               }, label: {
                    Text("Cancel")
                        .foregroundColor(.orange)
                })
             , trailing:
                ProgressView()
                .isHidden(isHidden) //<< isHidden takes a bool whether it should be hidden
            )
        }
    }
}