RevDoc FocusedView

RevDoc FocusedView.swift

struct ContentView: View {
  var body: some View {
    VStack {
      TextFieldView()
      DisplayTextView()
    }
    .padding(20)
  }
}

struct TextFieldView: View {
  @State var text = ""
  var body: some View {
    TextField("", text: $text)
      .focusedValue(\.text, $text)
  }
}

struct DisplayTextView: View {
  @FocusedBinding(\.text) var text: String?
  var body: some View {
    Text(text ?? "Blank")
  }
}

struct FocusedTextKey : FocusedValueKey {
  typealias Value = Binding<String>
}
extension FocusedValues {
  var text: FocusedTextKey.Value? {
    get { self[FocusedTextKey.self] }
    set { self[FocusedTextKey.self] = newValue }
  }
}