(* Copyright (C) 2004, HELM Team.
 * 
 * This file is part of HELM, an Hypertextual, Electronic
 * Library of Mathematics, developed at the Computer Science
 * Department, University of Bologna, Italy.
 * 
 * HELM is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * HELM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HELM; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
 * 
 * For details, see the HELM World-Wide-Web page,
 * http://helm.cs.unibo.it/
 *)

exception Not_implemented of string
let not_implemented feature = raise (Not_implemented feature)

  (** exceptions whose content should be presented to the user *)
exception Failure of string
let error s = raise (Failure s)

let _ = Helm_registry.load_from "matita.conf.xml"
let _ = GMain.Main.init ()
let gui = new MatitaGui.gui (Helm_registry.get "matita.glade_file")

let interactive_user_uri_choice
  ~(selection_mode:[`MULTIPLE|`SINGLE]) ?(nonvars_button=false) ~title ~msg
  uris
=
  let only_constant_choices =
    lazy
      (List.filter
        (fun uri -> not (String.sub uri (String.length uri - 4) 4 = ".var"))
        uris)
  in
  if (selection_mode <> `SINGLE) &&
    (Helm_registry.get_bool "matita.auto_disambiguation")
  then
    Lazy.force only_constant_choices
  else begin
    let win = gui#uriChoice in
    let choices = ref [] in
    let chosen = ref false in
    let use_only_constants = ref false in
    win#uriChoiceDialog#set_title title;
    win#uriChoiceLabel#set_text msg;
    gui#uriChoices#list_store#clear ();
    List.iter gui#uriChoices#easy_append uris;
    win#uriChoiceConstantsButton#misc#set_sensitive nonvars_button;
    let bye = ref (fun () -> ()) in
    let id1 =
      win#uriChoiceConstantsButton#connect#clicked (fun _ ->
        use_only_constants := true;
        !bye ())
    in
    let id2 =
      win#uriChoiceAutoButton#connect#clicked (fun _ ->
       use_only_constants := true ;
       Helm_registry.set_bool "matita.auto_disambiguation" true;
       !bye ())
    in
    let id3 =
      win#uriChoiceSelectedButton#connect#clicked (fun _ ->
        choices := gui#uriChoices#easy_selection ();
        !bye ())
    in
    bye := (fun () ->
      win#uriChoiceDialog#misc#hide ();
      win#uriChoiceConstantsButton#misc#disconnect id1;
      win#uriChoiceAutoButton#misc#disconnect id2;
      win#uriChoiceSelectedButton#misc#disconnect id3;
      prerr_endline "quit";
      GMain.Main.quit ());
    win#uriChoiceDialog#show ();
    GtkThread.main ();
    if !use_only_constants then
      Lazy.force only_constant_choices
    else
      match !choices with
      | [] -> error "No choice"
      | choices -> choices
  end

(*
module DisambiguateCallbacks =
  struct
    let interactive_user_uri_choice =
      assert false  (* TODO *)
(*       interactive_user_uri_choice *)
    let interactive_interpretation_choice choices =
      assert false  (* TODO *)
    let input_or_locate_uri ~title =
      assert false  (* TODO *)
  end
*)

let debugDialog () =
  let dialog =
    new MatitaGeneratedGui.debug
      ~file:(Helm_registry.get "matita.glade_file") ()
  in
  let retval = ref None in
  let return v =
    retval := Some v;
    dialog#debug#destroy ();
    GMain.Main.quit ()
  in
  ignore (dialog#debug#event#connect#delete (fun _ -> true));
  ignore (dialog#okbutton2#connect#clicked (fun _ -> return 1));
  ignore (dialog#cancelbutton2#connect#clicked (fun _ -> return 2));
  dialog#debug#show ();
  GtkThread.main ();
  (match !retval with None -> assert false | Some v -> v)

let _ =
  gui#main#debugMenuItem2#connect#activate (fun _ ->
    prerr_endline (string_of_int (debugDialog ())))

  (** quit program, possibly asking for confirmation *)
let quit () = GMain.Main.quit ()
let _ = gui#setQuitCallback quit
let _ =
  gui#main#debugMenuItem0#connect#activate (fun _ ->
    let uris =
      interactive_user_uri_choice
        ~selection_mode:`MULTIPLE
        ~nonvars_button:false
        ~title:"titolo"
        ~msg:"messaggio"
        ["cic:/uno.con"; "cic:/due.var"; "cic:/tre.con"; "cic:/quattro.con";
        "cic:/cinque.var"]
    in
    List.iter prerr_endline uris; print_newline ())
let _ =
  gui#main#debugMenuItem1#connect#activate (fun _ ->
    Helm_registry.set_bool "matita.auto_disambiguation"
      (not (Helm_registry.get_bool "matita.auto_disambiguation")))

let _ =
(*   gui#uriChoices#easy_append "pippo"; *)
(*   gui#uriChoices#list_store#clear (); *)
  GtkThread.main ()