ContentView.swift

struct ContentView: View {
    @StateObject var viewModel = ViewModel()
    
    enum FormEntry: Hashable {
        case lastName, firstName, email
    }
    
    @FocusState var focused: FormEntry?
    
    var body: some View {
        VStack {
            Text("Application")
            TextField("Last Name", text: $viewModel.lastName, prompt: nil)
                .focused($focused, equals: .lastName)
            TextField("First Name", text: $viewModel.firstName, prompt: nil)
                .focused($focused, equals: .firstName)
            TextField("Email", text: $viewModel.email, prompt: nil)
                .focused($focused, equals: .email)
            Button("Reset") {
                viewModel.reset()
                focused = .lastName
            }
        }
        .frame(idealWidth: 600)
        .padding()
    }
}