Focus Extension

[edgarfgp]

This PR adds a convenient SetFocus extension to Focus(0 in a VisualElement that is not in the Screen and we want to trigger it .

BEFORE:

• We have to use the Element ViewRef to be able to the use . and then use a Cmd to perform this interaction

  match loanAmountPickerRef.TryValue with
  | Some target -> target.Focus() |> ignore
  | None -> failwith "LoanAmountPickerRef not found"

Using this extenion

• Just use .setFocus(model.X) and this will internally handle that for you . You can manage this model as you need

  Picker(["1"; "2"], PickerMsg)
  .isVisible(false)
  .setFocus(model.X)

https://user-images.githubusercontent.com/31915729/158196819-9546524b-edd9-4227-bf64-1fd49eaee8a9.mp4