(*
 * clock.ml
 * --------
 * Copyright : (c) 2011, Jeremie Dimino <jeremie@dimino.org>
 * Licence   : BSD3
 *
 * This file is a part of Lambda-Term.
 *)

open Lwt_react
open Lwt
open LTerm_widget

let get_time () =
  let localtime = Unix.localtime (Unix.time ()) in
  Printf.sprintf "%02u:%02u:%02u"
    localtime.Unix.tm_hour
    localtime.Unix.tm_min
    localtime.Unix.tm_sec

lwt () =
  let waiter, wakener = wait () in

  let vbox = new vbox in
  let clock = new label (get_time ()) in
  let button = new button "exit" in
  vbox#add clock;
  vbox#add button;

  (* Update the time every second. *)
  ignore (Lwt_engine.on_timer 1.0 true (fun _ -> clock#set_text (get_time ())));

  (* Quit when the exit button is clicked. *)
  button#on_click (wakeup wakener);

  (* Run in the standard terminal. *)
  lwt term = Lazy.force LTerm.stdout in
  run term vbox waiter