(* Copyright (C) 2000-2002, 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://cs.unibo.it/helm/.
 *)

(******************************************************************************)
(*                                                                            *)
(*                               PROJECT HELM                                 *)
(*                                                                            *)
(*                Claudio Sacerdoti Coen <sacerdot@cs.unibo.it>               *)
(*                                 29/01/2003                                 *)
(*                                                                            *)
(*                                                                            *)
(******************************************************************************)

type mml_of_cic_sequent =
 Cic.metasenv ->
 int * Cic.context * Cic.term ->
 Gdome.document * 
 (Cic.annconjecture *
  ((Cic.id, Cic.term) Hashtbl.t *
   (Cic.id, Cic.id option) Hashtbl.t *
   (string, Cic.hypothesis) Hashtbl.t *
   (Cic.id, string) Hashtbl.t))
   

type mml_of_cic_object =
  Cic.obj ->
  Gdome.document * 
  (Cic.annobj * 
   ((Cic.id, Cic.term) Hashtbl.t * 
    (Cic.id, Cic.id option) Hashtbl.t *
    (Cic.id, Cic.conjecture) Hashtbl.t * 
    (Cic.id, Cic.hypothesis) Hashtbl.t *
    (Cic.id, string) Hashtbl.t *   
    (Cic.id, Cic2acic.anntypes) Hashtbl.t))

(** A widget to render sequents **)

class sequent_viewer :
  mml_of_cic_sequent:mml_of_cic_sequent ->
  Gtk_mathview.math_view Gtk.obj ->
  object
    inherit GMathViewAux.multi_selection_math_view

    (* returns the list of selected terms         *)
    (* selections which are not terms are ignored *)
    method get_selected_terms : Cic.term list

    (* returns the list of selected hypotheses         *)
    (* selections which are not hypotheses are ignored *)
    method get_selected_hypotheses : Cic.hypothesis list

    method load_sequent : Cic.metasenv -> Cic.conjecture -> unit
  end

val sequent_viewer :
  mml_of_cic_sequent:mml_of_cic_sequent ->
  ?hadjustment:GData.adjustment ->
  ?vadjustment:GData.adjustment ->
  ?font_size:int ->
  ?log_verbosity:int ->
  ?width:int ->
  ?height:int ->
  ?packing:(GObj.widget -> unit) ->
  ?show:bool ->
  unit -> sequent_viewer

(** A widget to render proofs **)

class proof_viewer :
  mml_of_cic_object:mml_of_cic_object ->
  Gtk_mathview.math_view Gtk.obj ->
  object
    inherit GMathViewAux.single_selection_math_view

    (* the new current sequent becomes the one obtained *)
    (* perforating the proof where the selection is     *)
    method make_sequent_of_selected_term : unit

    (* the new current sequent becomes the one obtained *)
    (* focusing the proof on the selected metavariable  *)
    method focus_sequent_of_selected_term : unit

    (* load_proof also returns the annotated cic term and the *)
    (* ids_to_inner_types and ids_to_inner_sorts maps.        *)
    method load_proof :
     Cic.obj ->
      Cic.annobj * (Cic.id, Cic2acic.anntypes) Hashtbl.t *
       (Cic.id, string) Hashtbl.t

  end

val proof_viewer :
  mml_of_cic_object:mml_of_cic_object ->
  ?hadjustment:GData.adjustment ->
  ?vadjustment:GData.adjustment ->
  ?font_size:int ->
  ?log_verbosity:int ->
  ?width:int ->
  ?height:int ->
  ?packing:(GObj.widget -> unit) ->
  ?show:bool ->
  unit -> proof_viewer