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module Grep = Grep
module Common = Common
open Notty
type state =
{ user_input : string
; on_enter : string -> unit
; on_cancel : unit -> unit
; prompt : string
; screen : I.t
}
let rec render t ({ user_input; on_enter; on_cancel; prompt; screen } as state) =
let size_x, size_y = Common.Term.size t in
Common.Term.cursor
t
(Some (String.length user_input + String.length prompt + 3, size_y));
let img =
let open I in
I.strf " %s " ~attr:(A.st A.reverse) prompt
<|> I.strf " %s%s" user_input (String.make size_x ' ')
|> I.pad ~l:0 ~t:(size_y - 1)
</> screen
in
Common.Term.image t img;
match Common.Term.event t with
| `End | `Key (`Escape, []) | `Key (`ASCII 'G', [ `Ctrl ]) | `Key (`ASCII 'C', [ `Ctrl ])
-> on_cancel ()
| `Key (`Enter, []) -> on_enter user_input
| `Key (`Backspace, []) ->
if String.equal "" user_input
then on_cancel ()
else (
let state =
{ state with
user_input = String.sub user_input 0 (max (String.length user_input - 1) 0)
}
in
render t state)
| `Resize _ -> render t state
| `Key (`ASCII c, []) ->
let state = { state with user_input = user_input ^ String.make 1 c } in
render t state
| _ -> render t state
|