X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2FgTopLevel%2FgTopLevel.ml;fp=helm%2FgTopLevel%2FgTopLevel.ml;h=0000000000000000000000000000000000000000;hb=c7514aaa249a96c5fdd39b1123fbdb38d92f20b6;hp=ec19107dde4e030dc56bb6311e324a7ad61b0227;hpb=1c7fb836e2af4f2f3d18afd0396701f2094265ff;p=helm.git diff --git a/helm/gTopLevel/gTopLevel.ml b/helm/gTopLevel/gTopLevel.ml deleted file mode 100644 index ec19107dd..000000000 --- a/helm/gTopLevel/gTopLevel.ml +++ /dev/null @@ -1,2880 +0,0 @@ -(* 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 *) -(* 06/01/2002 *) -(* *) -(* *) -(******************************************************************************) - -open Printf;; - -(* DEBUGGING *) - -module MQI = MQueryInterpreter -module MQIC = MQIConn -module MQGT = MQGTypes -module MQGU = MQGUtil -module MQG = MQueryGenerator - -(* GLOBAL CONSTANTS *) - -let mqi_flags = [MQIC.Postgres ; MQIC.Stat ; MQIC.Warn ; MQIC.Log] (* default MathQL interpreter options *) -(* -let mqi_flags = [] (* default MathQL interpreter options *) -*) -let mqi_handle = MQIC.init mqi_flags prerr_string - -let xlinkns = Gdome.domString "http://www.w3.org/1999/xlink";; - -let htmlheader = - "" ^ - " " -;; - -let htmlfooter = - " " ^ - "" -;; - -let prooffile = - try - Sys.getenv "GTOPLEVEL_PROOFFILE" - with - Not_found -> "/public/currentproof" -;; - -let prooffiletype = - try - Sys.getenv "GTOPLEVEL_PROOFFILETYPE" - with - Not_found -> "/public/currentprooftype" -;; - -(* GLOBAL REFERENCES (USED BY CALLBACKS) *) - -let htmlheader_and_content = ref htmlheader;; - -let check_term = ref (fun _ _ _ -> assert false);; - -exception RenderingWindowsNotInitialized;; - -let set_rendering_window,rendering_window = - let rendering_window_ref = ref None in - (function rw -> rendering_window_ref := Some rw), - (function () -> - match !rendering_window_ref with - None -> raise RenderingWindowsNotInitialized - | Some rw -> rw - ) -;; - -exception SettingsWindowsNotInitialized;; - -let set_settings_window,settings_window = - let settings_window_ref = ref None in - (function rw -> settings_window_ref := Some rw), - (function () -> - match !settings_window_ref with - None -> raise SettingsWindowsNotInitialized - | Some rw -> rw - ) -;; - -exception OutputHtmlNotInitialized;; - -let set_outputhtml,outputhtml = - let outputhtml_ref = ref None in - (function rw -> outputhtml_ref := Some rw), - (function () -> - match !outputhtml_ref with - None -> raise OutputHtmlNotInitialized - | Some outputhtml -> outputhtml - ) -;; - -exception QedSetSensitiveNotInitialized;; -let qed_set_sensitive = - ref (function _ -> raise QedSetSensitiveNotInitialized) -;; - -exception SaveSetSensitiveNotInitialized;; -let save_set_sensitive = - ref (function _ -> raise SaveSetSensitiveNotInitialized) -;; - -(* COMMAND LINE OPTIONS *) - -let usedb = ref true - -let argspec = - [ - "-nodb", Arg.Clear usedb, "disable use of MathQL DB" - ] -in -Arg.parse argspec ignore "" - -(* MISC FUNCTIONS *) - -let term_of_cic_textual_parser_uri uri = - let module C = Cic in - let module CTP = CicTextualParser0 in - match uri with - CTP.ConUri uri -> C.Const (uri,[]) - | CTP.VarUri uri -> C.Var (uri,[]) - | CTP.IndTyUri (uri,tyno) -> C.MutInd (uri,tyno,[]) - | CTP.IndConUri (uri,tyno,consno) -> C.MutConstruct (uri,tyno,consno,[]) -;; - -let string_of_cic_textual_parser_uri uri = - let module C = Cic in - let module CTP = CicTextualParser0 in - let uri' = - match uri with - CTP.ConUri uri -> UriManager.string_of_uri uri - | CTP.VarUri uri -> UriManager.string_of_uri uri - | CTP.IndTyUri (uri,tyno) -> - UriManager.string_of_uri uri ^ "#1/" ^ string_of_int (tyno + 1) - | CTP.IndConUri (uri,tyno,consno) -> - UriManager.string_of_uri uri ^ "#1/" ^ string_of_int (tyno + 1) ^ "/" ^ - string_of_int consno - in - (* 4 = String.length "cic:" *) - String.sub uri' 4 (String.length uri' - 4) -;; - -let output_html outputhtml msg = - htmlheader_and_content := !htmlheader_and_content ^ msg ; - outputhtml#source (!htmlheader_and_content ^ htmlfooter) ; - outputhtml#set_topline (-1) -;; - -(* UTILITY FUNCTIONS TO DISAMBIGUATE AN URI *) - -(* Check window *) - -let check_window outputhtml uris = - let window = - GWindow.window - ~width:800 ~modal:true ~title:"Check" ~border_width:2 () in - let notebook = - GPack.notebook ~scrollable:true ~packing:window#add () in - window#show () ; - let render_terms = - List.map - (function uri -> - let scrolled_window = - GBin.scrolled_window ~border_width:10 - ~packing: - (notebook#append_page ~tab_label:((GMisc.label ~text:uri ())#coerce)) - () - in - lazy - (let mmlwidget = - TermViewer.sequent_viewer - ~packing:scrolled_window#add ~width:400 ~height:280 () in - let expr = - let term = - term_of_cic_textual_parser_uri - (MQueryMisc.cic_textual_parser_uri_of_string uri) - in - (Cic.Cast (term, CicTypeChecker.type_of_aux' [] [] term)) - in - try - mmlwidget#load_sequent [] (111,[],expr) - with - e -> - output_html outputhtml - ("

" ^ Printexc.to_string e ^ "

") - ) - ) uris - in - ignore - (notebook#connect#switch_page - (function i -> Lazy.force (List.nth render_terms i))) -;; - -exception NoChoice;; - -let - interactive_user_uri_choice ~(selection_mode:[`SINGLE|`EXTENDED]) ?(ok="Ok") - ?(enable_button_for_non_vars=false) ~title ~msg uris -= - let choices = ref [] in - let chosen = ref false in - let use_only_constants = ref false in - let window = - GWindow.dialog ~modal:true ~title ~width:600 () in - let lMessage = - GMisc.label ~text:msg - ~packing:(window#vbox#pack ~expand:false ~fill:false ~padding:5) () in - let scrolled_window = - GBin.scrolled_window ~border_width:10 - ~packing:(window#vbox#pack ~expand:true ~fill:true ~padding:5) () in - let clist = - let expected_height = 18 * List.length uris in - let height = if expected_height > 400 then 400 else expected_height in - GList.clist ~columns:1 ~packing:scrolled_window#add - ~height ~selection_mode:(selection_mode :> Gtk.Tags.selection_mode) () in - let _ = List.map (function x -> clist#append [x]) uris in - let hbox2 = - GPack.hbox ~border_width:0 - ~packing:(window#vbox#pack ~expand:false ~fill:false ~padding:5) () in - let explain_label = - GMisc.label ~text:"None of the above. Try this one:" - ~packing:(hbox2#pack ~expand:false ~fill:false ~padding:5) () in - let manual_input = - GEdit.entry ~editable:true - ~packing:(hbox2#pack ~expand:true ~fill:true ~padding:5) () in - let hbox = - GPack.hbox ~border_width:0 ~packing:window#action_area#add () in - let okb = - GButton.button ~label:ok - ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in - let _ = okb#misc#set_sensitive false in - let nonvarsb = - GButton.button - ~packing: - (function w -> - if enable_button_for_non_vars then - hbox#pack ~expand:false ~fill:false ~padding:5 w) - ~label:"Try constants only" () in - let checkb = - GButton.button ~label:"Check" - ~packing:(hbox#pack ~padding:5) () in - let _ = checkb#misc#set_sensitive false in - let cancelb = - GButton.button ~label:"Abort" - ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in - (* actions *) - let check_callback () = - assert (List.length !choices > 0) ; - check_window (outputhtml ()) !choices - in - ignore (window#connect#destroy GMain.Main.quit) ; - ignore (cancelb#connect#clicked window#destroy) ; - ignore - (okb#connect#clicked (function () -> chosen := true ; window#destroy ())) ; - ignore - (nonvarsb#connect#clicked - (function () -> - use_only_constants := true ; - chosen := true ; - window#destroy () - )) ; - ignore (checkb#connect#clicked check_callback) ; - ignore - (clist#connect#select_row - (fun ~row ~column ~event -> - checkb#misc#set_sensitive true ; - okb#misc#set_sensitive true ; - choices := (List.nth uris row)::!choices)) ; - ignore - (clist#connect#unselect_row - (fun ~row ~column ~event -> - choices := - List.filter (function uri -> uri != (List.nth uris row)) !choices)) ; - ignore - (manual_input#connect#changed - (fun _ -> - if manual_input#text = "" then - begin - choices := [] ; - checkb#misc#set_sensitive false ; - okb#misc#set_sensitive false ; - clist#misc#set_sensitive true - end - else - begin - choices := [manual_input#text] ; - clist#unselect_all () ; - checkb#misc#set_sensitive true ; - okb#misc#set_sensitive true ; - clist#misc#set_sensitive false - end)); - window#set_position `CENTER ; - window#show () ; - GtkThread.main (); - if !chosen then - if !use_only_constants then - List.filter - (function uri -> not (String.sub uri (String.length uri - 4) 4 = ".var")) - uris - else - if List.length !choices > 0 then !choices else raise NoChoice - else - raise NoChoice -;; - -let interactive_interpretation_choice interpretations = - let chosen = ref None in - let window = - GWindow.window - ~modal:true ~title:"Ambiguous well-typed input." ~border_width:2 () in - let vbox = GPack.vbox ~packing:window#add () in - let lMessage = - GMisc.label - ~text: - ("Ambiguous input since there are many well-typed interpretations." ^ - " Please, choose one of them.") - ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in - let notebook = - GPack.notebook ~scrollable:true - ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in - let _ = - List.map - (function interpretation -> - let clist = - let expected_height = 18 * List.length interpretation in - let height = if expected_height > 400 then 400 else expected_height in - GList.clist ~columns:2 ~packing:notebook#append_page ~height - ~titles:["id" ; "URI"] () - in - ignore - (List.map - (function (id,uri) -> - let n = clist#append [id;uri] in - clist#set_row ~selectable:false n - ) interpretation - ) ; - clist#columns_autosize () - ) interpretations in - let hbox = - GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in - let okb = - GButton.button ~label:"Ok" - ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in - let cancelb = - GButton.button ~label:"Abort" - ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in - (* actions *) - ignore (window#connect#destroy GMain.Main.quit) ; - ignore (cancelb#connect#clicked window#destroy) ; - ignore - (okb#connect#clicked - (function () -> chosen := Some notebook#current_page ; window#destroy ())) ; - window#set_position `CENTER ; - window#show () ; - GtkThread.main (); - match !chosen with - None -> raise NoChoice - | Some n -> n -;; - - -(* MISC FUNCTIONS *) - -let - save_object_to_disk uri annobj ids_to_inner_sorts ids_to_inner_types pathname -= - let name = - let struri = UriManager.string_of_uri uri in - let idx = (String.rindex struri '/') + 1 in - String.sub struri idx (String.length struri - idx) - in - let path = pathname ^ "/" ^ name in - let xml, bodyxml = - Cic2Xml.print_object uri ~ids_to_inner_sorts ~ask_dtd_to_the_getter:false - annobj - in - let xmlinnertypes = - Cic2Xml.print_inner_types uri ~ids_to_inner_sorts ~ids_to_inner_types - ~ask_dtd_to_the_getter:false - in - (* innertypes *) - let innertypesuri = UriManager.innertypesuri_of_uri uri in - Xml.pp ~quiet:true xmlinnertypes (Some (path ^ ".types.xml")) ; - Getter.register innertypesuri - (Configuration.annotations_url ^ - Str.replace_first (Str.regexp "^cic:") "" - (UriManager.string_of_uri innertypesuri) ^ ".xml" - ) ; - (* constant type / variable / mutual inductive types definition *) - Xml.pp ~quiet:true xml (Some (path ^ ".xml")) ; - Getter.register uri - (Configuration.annotations_url ^ - Str.replace_first (Str.regexp "^cic:") "" - (UriManager.string_of_uri uri) ^ ".xml" - ) ; - match bodyxml with - None -> () - | Some bodyxml' -> - (* constant body *) - let bodyuri = - match UriManager.bodyuri_of_uri uri with - None -> assert false - | Some bodyuri -> bodyuri - in - Xml.pp ~quiet:true bodyxml' (Some (path ^ ".body.xml")) ; - Getter.register bodyuri - (Configuration.annotations_url ^ - Str.replace_first (Str.regexp "^cic:") "" - (UriManager.string_of_uri bodyuri) ^ ".xml" - ) -;; - - -(* CALLBACKS *) - -exception OpenConjecturesStillThere;; -exception WrongProof;; - -let pathname_of_annuri uristring = - Configuration.annotations_dir ^ - Str.replace_first (Str.regexp "^cic:") "" uristring -;; - -let make_dirs dirpath = - ignore (Unix.system ("mkdir -p " ^ dirpath)) -;; - -let save_obj uri obj = - let - (acic,ids_to_terms,ids_to_father_ids,ids_to_inner_sorts, - ids_to_inner_types,ids_to_conjectures,ids_to_hypotheses) - = - Cic2acic.acic_object_of_cic_object obj - in - (* let's save the theorem and register it to the getter *) - let pathname = pathname_of_annuri (UriManager.buri_of_uri uri) in - make_dirs pathname ; - save_object_to_disk uri acic ids_to_inner_sorts ids_to_inner_types - pathname -;; - -let qed () = - match !ProofEngine.proof with - None -> assert false - | Some (uri,[],bo,ty) -> - if - CicReduction.are_convertible [] - (CicTypeChecker.type_of_aux' [] [] bo) ty - then - begin - (*CSC: Wrong: [] is just plainly wrong *) - let proof = Cic.Constant (UriManager.name_of_uri uri,Some bo,ty,[]) in - let (acic,ids_to_inner_types,ids_to_inner_sorts) = - (rendering_window ())#output#load_proof uri proof - in - !qed_set_sensitive false ; - (* let's save the theorem and register it to the getter *) - let pathname = pathname_of_annuri (UriManager.buri_of_uri uri) in - make_dirs pathname ; - save_object_to_disk uri acic ids_to_inner_sorts ids_to_inner_types - pathname - end - else - raise WrongProof - | _ -> raise OpenConjecturesStillThere -;; - - (** save an unfinished proof on the filesystem *) -let save_unfinished_proof () = - let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in - let (xml, bodyxml) = ProofEngine.get_current_status_as_xml () in - Xml.pp ~quiet:true xml (Some prooffiletype) ; - output_html outputhtml - ("

Current proof type saved to " ^ - prooffiletype ^ "

") ; - Xml.pp ~quiet:true bodyxml (Some prooffile) ; - output_html outputhtml - ("

Current proof body saved to " ^ - prooffile ^ "

") -;; - -(* Used to typecheck the loaded proofs *) -let typecheck_loaded_proof metasenv bo ty = - let module T = CicTypeChecker in - ignore ( - List.fold_left - (fun metasenv ((_,context,ty) as conj) -> - ignore (T.type_of_aux' metasenv context ty) ; - metasenv @ [conj] - ) [] metasenv) ; - ignore (T.type_of_aux' metasenv [] ty) ; - ignore (T.type_of_aux' metasenv [] bo) -;; - -let decompose_uris_choice_callback uris = -(* N.B.: in questo passaggio perdo l'informazione su exp_named_subst !!!! *) - let module U = UriManager in - List.map - (function uri -> - match MQueryMisc.cic_textual_parser_uri_of_string uri with - CicTextualParser0.IndTyUri (uri,typeno) -> (uri,typeno,[]) - | _ -> assert false) - (interactive_user_uri_choice - ~selection_mode:`EXTENDED ~ok:"Ok" ~enable_button_for_non_vars:false - ~title:"Decompose" ~msg:"Please, select the Inductive Types to decompose" - (List.map - (function (uri,typeno,_) -> - U.string_of_uri uri ^ "#1/" ^ string_of_int (typeno+1) - ) uris) - ) -;; - -let mk_fresh_name_callback context name ~typ = - let fresh_name = - match ProofEngineHelpers.mk_fresh_name context name ~typ with - Cic.Name fresh_name -> fresh_name - | Cic.Anonymous -> assert false - in - match - GToolbox.input_string ~title:"Enter a fresh hypothesis name" ~text:fresh_name - ("Enter a fresh name for the hypothesis " ^ - CicPp.pp typ - (List.map (function None -> None | Some (n,_) -> Some n) context)) - with - Some fresh_name' -> Cic.Name fresh_name' - | None -> raise NoChoice -;; - -let refresh_proof (output : TermViewer.proof_viewer) = - try - let uri,currentproof = - match !ProofEngine.proof with - None -> assert false - | Some (uri,metasenv,bo,ty) -> - ProofEngine.proof := Some(uri,metasenv,bo,ty); - if List.length metasenv = 0 then - begin - !qed_set_sensitive true ; -prerr_endline "CSC: ###### REFRESH_PROOF, Hbugs.clear ()" ; - Hbugs.clear () - end - else -begin -prerr_endline "CSC: ###### REFRESH_PROOF, Hbugs.notify ()" ; - Hbugs.notify () ; -end ; - (*CSC: Wrong: [] is just plainly wrong *) - uri, - (Cic.CurrentProof (UriManager.name_of_uri uri, metasenv, bo, ty, [])) - in - ignore (output#load_proof uri currentproof) - with - e -> - match !ProofEngine.proof with - None -> assert false - | Some (uri,metasenv,bo,ty) -> -prerr_endline ("Offending proof: " ^ CicPp.ppobj (Cic.CurrentProof ("questa",metasenv,bo,ty,[]))) ; flush stderr ; - raise (InvokeTactics.RefreshProofException e) - -let refresh_goals ?(empty_notebook=true) notebook = - try - match !ProofEngine.goal with - None -> - if empty_notebook then - begin - notebook#remove_all_pages ~skip_switch_page_event:false ; - notebook#set_empty_page - end - else - notebook#proofw#unload - | Some metano -> - let metasenv = - match !ProofEngine.proof with - None -> assert false - | Some (_,metasenv,_,_) -> metasenv - in - let currentsequent = - List.find (function (m,_,_) -> m=metano) metasenv - in - let regenerate_notebook () = - let skip_switch_page_event = - match metasenv with - (m,_,_)::_ when m = metano -> false - | _ -> true - in - notebook#remove_all_pages ~skip_switch_page_event ; - List.iter (function (m,_,_) -> notebook#add_page m) metasenv ; - in - if empty_notebook then - begin - regenerate_notebook () ; - notebook#set_current_page - ~may_skip_switch_page_event:false metano - end - else - begin - notebook#set_current_page - ~may_skip_switch_page_event:true metano ; - notebook#proofw#load_sequent metasenv currentsequent - end - with - e -> -let metano = - match !ProofEngine.goal with - None -> assert false - | Some m -> m -in -let metasenv = - match !ProofEngine.proof with - None -> assert false - | Some (_,metasenv,_,_) -> metasenv -in -try -let currentsequent = List.find (function (m,_,_) -> m=metano) metasenv in - prerr_endline ("Offending sequent: " ^ SequentPp.TextualPp.print_sequent currentsequent) ; flush stderr ; - raise (InvokeTactics.RefreshSequentException e) -with Not_found -> prerr_endline ("Offending sequent " ^ string_of_int metano ^ " unknown."); raise (InvokeTactics.RefreshSequentException e) - -module InvokeTacticsCallbacks = - struct - let sequent_viewer () = (rendering_window ())#notebook#proofw - let term_editor () = (rendering_window ())#inputt - let scratch_window () = (rendering_window ())#scratch_window - - let refresh_proof () = - let output = ((rendering_window ())#output : TermViewer.proof_viewer) in - refresh_proof output - - let refresh_goals () = - let notebook = (rendering_window ())#notebook in - refresh_goals notebook - - let decompose_uris_choice_callback = decompose_uris_choice_callback - let mk_fresh_name_callback = mk_fresh_name_callback - let output_html msg = output_html (outputhtml ()) msg - end -;; -module InvokeTactics' = InvokeTactics.Make (InvokeTacticsCallbacks);; -(* Just to initialize the Hbugs module *) -module Ignore = Hbugs.Initialize (InvokeTactics');; - - (** load an unfinished proof from filesystem *) -let load_unfinished_proof () = - let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in - let output = ((rendering_window ())#output : TermViewer.proof_viewer) in - let notebook = (rendering_window ())#notebook in - try - match - GToolbox.input_string ~title:"Load Unfinished Proof" ~text:"/dummy.con" - "Choose an URI:" - with - None -> raise NoChoice - | Some uri0 -> - let uri = UriManager.uri_of_string ("cic:" ^ uri0) in - match CicParser.obj_of_xml prooffiletype (Some prooffile) with - Cic.CurrentProof (_,metasenv,bo,ty,_) -> - typecheck_loaded_proof metasenv bo ty ; - ProofEngine.proof := - Some (uri, metasenv, bo, ty) ; - ProofEngine.goal := - (match metasenv with - [] -> None - | (metano,_,_)::_ -> Some metano - ) ; - refresh_proof output ; - refresh_goals notebook ; - output_html outputhtml - ("

Current proof type loaded from " ^ - prooffiletype ^ "

") ; - output_html outputhtml - ("

Current proof body loaded from " ^ - prooffile ^ "

") ; - !save_set_sensitive true; - | _ -> assert false - with - InvokeTactics.RefreshSequentException e -> - output_html outputhtml - ("

Exception raised during the refresh of the " ^ - "sequent: " ^ Printexc.to_string e ^ "

") - | InvokeTactics.RefreshProofException e -> - output_html outputhtml - ("

Exception raised during the refresh of the " ^ - "proof: " ^ Printexc.to_string e ^ "

") - | e -> - output_html outputhtml - ("

" ^ Printexc.to_string e ^ "

") ; -;; - -let edit_aliases () = - let inputt = ((rendering_window ())#inputt : TermEditor.term_editor) in - let id_to_uris = inputt#id_to_uris in - let chosen = ref false in - let window = - GWindow.window - ~width:400 ~modal:true ~title:"Edit Aliases..." ~border_width:2 () in - let vbox = - GPack.vbox ~border_width:0 ~packing:window#add () in - let scrolled_window = - GBin.scrolled_window ~border_width:10 - ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in - let input = GEdit.text ~editable:true ~width:400 ~height:100 - ~packing:scrolled_window#add () in - let hbox = - GPack.hbox ~border_width:0 - ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in - let okb = - GButton.button ~label:"Ok" - ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in - let cancelb = - GButton.button ~label:"Cancel" - ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in - ignore (window#connect#destroy GMain.Main.quit) ; - ignore (cancelb#connect#clicked window#destroy) ; - ignore - (okb#connect#clicked (function () -> chosen := true ; window#destroy ())) ; - let dom,resolve_id = !id_to_uris in - ignore - (input#insert_text ~pos:0 - (String.concat "\n" - (List.map - (function v -> - let uri = - match resolve_id v with - None -> assert false - | Some (CicTextualParser0.Uri uri) -> uri - | Some (CicTextualParser0.Term _) - | Some CicTextualParser0.Implicit -> assert false - in - "alias " ^ - (match v with - CicTextualParser0.Id id -> id - | CicTextualParser0.Symbol (descr,_) -> - (* CSC: To be implemented *) - assert false - )^ " " ^ (string_of_cic_textual_parser_uri uri) - ) dom))) ; - window#show () ; - GtkThread.main (); - if !chosen then - let dom,resolve_id = - let inputtext = input#get_chars 0 input#length in - let regexpr = - let alfa = "[a-zA-Z_-]" in - let digit = "[0-9]" in - let ident = alfa ^ "\(" ^ alfa ^ "\|" ^ digit ^ "\)*" in - let blanks = "\( \|\t\|\n\)+" in - let nonblanks = "[^ \t\n]+" in - let uri = "/\(" ^ ident ^ "/\)*" ^ nonblanks in (* not very strict check *) - Str.regexp - ("alias" ^ blanks ^ "\(" ^ ident ^ "\)" ^ blanks ^ "\(" ^ uri ^ "\)") - in - let rec aux n = - try - let n' = Str.search_forward regexpr inputtext n in - let id = CicTextualParser0.Id (Str.matched_group 2 inputtext) in - let uri = - MQueryMisc.cic_textual_parser_uri_of_string - ("cic:" ^ (Str.matched_group 5 inputtext)) - in - let dom,resolve_id = aux (n' + 1) in - if List.mem id dom then - dom,resolve_id - else - id::dom, - (function id' -> - if id = id' then - Some (CicTextualParser0.Uri uri) - else resolve_id id') - with - Not_found -> TermEditor.empty_id_to_uris - in - aux 0 - in - id_to_uris := (dom,resolve_id) -;; - -let proveit () = - let module L = LogicalOperations in - let module G = Gdome in - let notebook = (rendering_window ())#notebook in - let output = (rendering_window ())#output in - let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in - try - output#make_sequent_of_selected_term ; - refresh_proof output ; - refresh_goals notebook - with - InvokeTactics.RefreshSequentException e -> - output_html outputhtml - ("

Exception raised during the refresh of the " ^ - "sequent: " ^ Printexc.to_string e ^ "

") - | InvokeTactics.RefreshProofException e -> - output_html outputhtml - ("

Exception raised during the refresh of the " ^ - "proof: " ^ Printexc.to_string e ^ "

") - | e -> - output_html outputhtml - ("

" ^ Printexc.to_string e ^ "

") -;; - -let focus () = - let module L = LogicalOperations in - let module G = Gdome in - let notebook = (rendering_window ())#notebook in - let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in - let output = (rendering_window ())#output in - try - output#focus_sequent_of_selected_term ; - refresh_goals notebook - with - InvokeTactics.RefreshSequentException e -> - output_html outputhtml - ("

Exception raised during the refresh of the " ^ - "sequent: " ^ Printexc.to_string e ^ "

") - | InvokeTactics.RefreshProofException e -> - output_html outputhtml - ("

Exception raised during the refresh of the " ^ - "proof: " ^ Printexc.to_string e ^ "

") - | e -> - output_html outputhtml - ("

" ^ Printexc.to_string e ^ "

") -;; - -exception NoPrevGoal;; -exception NoNextGoal;; - -let setgoal metano = - let module L = LogicalOperations in - let module G = Gdome in - let notebook = (rendering_window ())#notebook in - let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in - let metasenv = - match !ProofEngine.proof with - None -> assert false - | Some (_,metasenv,_,_) -> metasenv - in - try - refresh_goals ~empty_notebook:false notebook - with - InvokeTactics.RefreshSequentException e -> - output_html outputhtml - ("

Exception raised during the refresh of the " ^ - "sequent: " ^ Printexc.to_string e ^ "

") - | e -> - output_html outputhtml - ("

" ^ Printexc.to_string e ^ "

") -;; - -let - show_in_show_window_obj, show_in_show_window_uri, show_in_show_window_callback -= - let window = - GWindow.window ~width:800 ~border_width:2 () in - let scrolled_window = - GBin.scrolled_window ~border_width:10 ~packing:window#add () in - let mmlwidget = - GMathViewAux.single_selection_math_view - ~packing:scrolled_window#add ~width:600 ~height:400 () - in - let _ = window#event#connect#delete (fun _ -> window#misc#hide () ; true ) in - let href = Gdome.domString "href" in - let show_in_show_window_obj uri obj = - let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in - try - let - (acic,ids_to_terms,ids_to_father_ids,ids_to_inner_sorts, - ids_to_inner_types,ids_to_conjectures,ids_to_hypotheses) - = - Cic2acic.acic_object_of_cic_object obj - in - let mml = - ApplyStylesheets.mml_of_cic_object - ~explode_all:false uri acic ids_to_inner_sorts ids_to_inner_types - in - window#set_title (UriManager.string_of_uri uri) ; - window#misc#hide () ; window#show () ; - mmlwidget#load_doc mml ; - with - e -> - output_html outputhtml - ("

" ^ Printexc.to_string e ^ "

") ; - in - let show_in_show_window_uri uri = - let obj = CicEnvironment.get_obj uri in - show_in_show_window_obj uri obj - in - let show_in_show_window_callback mmlwidget (n : Gdome.element option) _ = - match n with - None -> () - | Some n' -> - if n'#hasAttributeNS ~namespaceURI:xlinkns ~localName:href then - let uri = - (n'#getAttributeNS ~namespaceURI:xlinkns ~localName:href)#to_string - in - show_in_show_window_uri (UriManager.uri_of_string uri) - else - ignore (mmlwidget#action_toggle n') - in - let _ = - mmlwidget#connect#click (show_in_show_window_callback mmlwidget) - in - show_in_show_window_obj, show_in_show_window_uri, - show_in_show_window_callback -;; - -exception NoObjectsLocated;; - -let user_uri_choice ~title ~msg uris = - let uri = - match uris with - [] -> raise NoObjectsLocated - | [uri] -> uri - | uris -> - match - interactive_user_uri_choice ~selection_mode:`SINGLE ~title ~msg uris - with - [uri] -> uri - | _ -> assert false - in - String.sub uri 4 (String.length uri - 4) -;; - -let locate_callback id = - let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in - let out = output_html outputhtml in - let query = MQG.locate id in - let result = MQI.execute mqi_handle query in - let uris = - List.map - (function uri,_ -> - MQueryMisc.wrong_xpointer_format_from_wrong_xpointer_format' uri) - result in - out "

Locate Query: 

";
-  MQueryUtil.text_of_query out query ""; 
-  out "
Result:
";
-  MQueryUtil.text_of_result out result "
";
-  user_uri_choice ~title:"Ambiguous input."
-   ~msg:
-     ("Ambiguous input \"" ^ id ^
-      "\". Please, choose one interpetation:")
-   uris
-;;
-
-
-let input_or_locate_uri ~title =
- let uri = ref None in
- let window =
-  GWindow.window
-   ~width:400 ~modal:true ~title ~border_width:2 () in
- let vbox = GPack.vbox ~packing:window#add () in
- let hbox1 =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label ~text:"Enter a valid URI:" ~packing:(hbox1#pack ~padding:5) () in
- let manual_input =
-  GEdit.entry ~editable:true
-   ~packing:(hbox1#pack ~expand:true ~fill:true ~padding:5) () in
- let checkb =
-  GButton.button ~label:"Check"
-   ~packing:(hbox1#pack ~expand:false ~fill:false ~padding:5) () in
- let _ = checkb#misc#set_sensitive false in
- let hbox2 =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label ~text:"You can also enter an indentifier to locate:"
-   ~packing:(hbox2#pack ~padding:5) () in
- let locate_input =
-  GEdit.entry ~editable:true
-   ~packing:(hbox2#pack ~expand:true ~fill:true ~padding:5) () in
- let locateb =
-  GButton.button ~label:"Locate"
-   ~packing:(hbox2#pack ~expand:false ~fill:false ~padding:5) () in
- let _ = locateb#misc#set_sensitive false in
- let hbox3 =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let okb =
-  GButton.button ~label:"Ok"
-   ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
- let _ = okb#misc#set_sensitive false in
- let cancelb =
-  GButton.button ~label:"Cancel"
-   ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) ()
- in
-  ignore (window#connect#destroy GMain.Main.quit) ;
-  ignore
-   (cancelb#connect#clicked (function () -> uri := None ; window#destroy ())) ;
-  let check_callback () =
-   let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
-   let uri = "cic:" ^ manual_input#text in
-    try
-      ignore (Getter.resolve (UriManager.uri_of_string uri)) ;
-      output_html outputhtml "
OK
" ;
-      true
-    with
-       Getter.Unresolved ->
-        output_html outputhtml
-         ("
URI " ^ uri ^
-          " does not correspond to any object.
") ;
-        false
-     | UriManager.IllFormedUri _ ->
-        output_html outputhtml
-         ("
URI " ^ uri ^ " is not well-formed.
") ;
-        false
-     | e ->
-        output_html outputhtml
-         ("
" ^ Printexc.to_string e ^ "
") ;
-        false
-  in
-  ignore
-   (okb#connect#clicked
-     (function () ->
-       if check_callback () then
-        begin
-         uri := Some manual_input#text ;
-         window#destroy ()
-        end
-   )) ;
-  ignore (checkb#connect#clicked (function () -> ignore (check_callback ()))) ;
-  ignore
-   (manual_input#connect#changed
-     (fun _ ->
-       if manual_input#text = "" then
-        begin
-         checkb#misc#set_sensitive false ;
-         okb#misc#set_sensitive false
-        end
-       else
-        begin
-         checkb#misc#set_sensitive true ;
-         okb#misc#set_sensitive true
-        end));
-  ignore
-   (locate_input#connect#changed
-     (fun _ -> locateb#misc#set_sensitive (locate_input#text <> ""))) ;
-  ignore
-   (locateb#connect#clicked
-     (function () ->
-       let id = locate_input#text in
-        manual_input#set_text (locate_callback id) ;
-        locate_input#delete_text 0 (String.length id)
-   )) ;
-  window#show () ;
-  GtkThread.main ();
-  match !uri with
-     None -> raise NoChoice
-   | Some uri -> UriManager.uri_of_string ("cic:" ^ uri)
-;;
-
-exception AmbiguousInput;;
-
-(* A WIDGET TO ENTER CIC TERMS *)
-
-module ChosenTermEditor  = TexTermEditor;;
-module ChosenTextualParser0 = TexCicTextualParser0;;
-(*
-module ChosenTermEditor = TermEditor;;
-module ChosenTextualParser0 = CicTextualParser0;;
-*)
-
-module Callbacks =
- struct
-  let get_metasenv () = !ChosenTextualParser0.metasenv
-  let set_metasenv metasenv = ChosenTextualParser0.metasenv := metasenv
-
-  let output_html msg = output_html (outputhtml ()) msg;;
-  let interactive_user_uri_choice =
-   fun ~selection_mode ?ok ?enable_button_for_non_vars ~title ~msg ~id ->
-    interactive_user_uri_choice ~selection_mode ?ok
-     ?enable_button_for_non_vars ~title ~msg;;
-  let interactive_interpretation_choice = interactive_interpretation_choice;;
-  let input_or_locate_uri = input_or_locate_uri;;
- end
-;;
-
-module TexTermEditor' = ChosenTermEditor.Make(Callbacks);;
-
-(* OTHER FUNCTIONS *)
-
-let locate () =
- let inputt = ((rendering_window ())#inputt : TermEditor.term_editor) in
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
-   try
-    match
-     GToolbox.input_string ~title:"Locate" "Enter an identifier to locate:"
-    with
-       None -> raise NoChoice
-     | Some input ->
-        let uri = locate_callback input in
-         inputt#set_term uri
-   with
-    e ->
-     output_html outputhtml
-      ("
" ^ Printexc.to_string e ^ "
")
-;;
-
-
-exception UriAlreadyInUse;;
-exception NotAUriToAConstant;;
-
-let new_inductive () =
- let inputt = ((rendering_window ())#inputt : TermEditor.term_editor) in
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
- let output = ((rendering_window ())#output : TermViewer.proof_viewer) in
- let notebook = (rendering_window ())#notebook in
-
- let chosen = ref false in
- let inductive = ref true in
- let paramsno = ref 0 in
- let get_uri = ref (function _ -> assert false) in
- let get_base_uri = ref (function _ -> assert false) in
- let get_names = ref (function _ -> assert false) in
- let get_types_and_cons = ref (function _ -> assert false) in
- let get_context_and_subst = ref (function _ -> assert false) in 
- let window =
-  GWindow.window
-   ~width:600 ~modal:true ~position:`CENTER
-   ~title:"New Block of Mutual (Co)Inductive Definitions"
-   ~border_width:2 () in
- let vbox = GPack.vbox ~packing:window#add () in
- let hbox =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label ~text:"Enter the URI for the new block:"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let uri_entry =
-  GEdit.entry ~editable:true
-   ~packing:(hbox#pack ~expand:true ~fill:true ~padding:5) () in
- let hbox0 =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label
-   ~text:
-     "Enter the number of left parameters in every arity and constructor type:"
-   ~packing:(hbox0#pack ~expand:false ~fill:false ~padding:5) () in
- let paramsno_entry =
-  GEdit.entry ~editable:true ~text:"0"
-   ~packing:(hbox0#pack ~expand:true ~fill:true ~padding:5) () in
- let hbox1 =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label ~text:"Are the definitions inductive or coinductive?"
-   ~packing:(hbox1#pack ~expand:false ~fill:false ~padding:5) () in
- let inductiveb =
-  GButton.radio_button ~label:"Inductive"
-   ~packing:(hbox1#pack ~expand:false ~fill:false ~padding:5) () in
- let coinductiveb =
-  GButton.radio_button ~label:"Coinductive"
-   ~group:inductiveb#group
-   ~packing:(hbox1#pack ~expand:false ~fill:false ~padding:5) () in
- let hbox2 =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label ~text:"Enter the list of the names of the types:"
-   ~packing:(hbox2#pack ~expand:false ~fill:false ~padding:5) () in
- let names_entry =
-  GEdit.entry ~editable:true
-   ~packing:(hbox2#pack ~expand:true ~fill:true ~padding:5) () in
- let hboxn =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let okb =
-  GButton.button ~label:"> Next"
-   ~packing:(hboxn#pack ~expand:false ~fill:false ~padding:5) () in
- let _ = okb#misc#set_sensitive true in
- let cancelb =
-  GButton.button ~label:"Abort"
-   ~packing:(hboxn#pack ~expand:false ~fill:false ~padding:5) () in
- ignore (window#connect#destroy GMain.Main.quit) ;
- ignore (cancelb#connect#clicked window#destroy) ;
- (* First phase *)
- let rec phase1 () =
-  ignore
-   (okb#connect#clicked
-     (function () ->
-       try
-        let uristr = "cic:" ^ uri_entry#text in
-        let namesstr = names_entry#text in
-        let paramsno' = int_of_string (paramsno_entry#text) in
-         match Str.split (Str.regexp " +") namesstr with
-            [] -> assert false
-          | (he::tl) as names ->
-             let uri = UriManager.uri_of_string (uristr ^ "/" ^ he ^ ".ind") in
-              begin
-               try
-                ignore (Getter.resolve uri) ;
-                raise UriAlreadyInUse
-               with
-                Getter.Unresolved ->
-                 get_uri := (function () -> uri) ; 
-                 get_names := (function () -> names) ;
-                 inductive := inductiveb#active ;
-                 paramsno := paramsno' ;
-                 phase2 ()
-              end
-       with
-        e ->
-         output_html outputhtml
-          ("
" ^ Printexc.to_string e ^ "
") ;
-     ))
- (* Second phase *)
- and phase2 () =
-  let type_widgets =
-   List.map
-    (function name ->
-      let frame =
-       GBin.frame ~label:name
-        ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in
-      let vbox = GPack.vbox ~packing:frame#add () in
-      let hbox = GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false) () in
-      let _ =
-       GMisc.label ~text:("Enter its type:")
-        ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-      let scrolled_window =
-       GBin.scrolled_window ~border_width:5
-        ~packing:(vbox#pack ~expand:true ~padding:0) () in
-      let newinputt =
-       TexTermEditor'.term_editor
-        mqi_handle
-        ~width:400 ~height:20 ~packing:scrolled_window#add 
-        ~share_id_to_uris_with:inputt ()
-        ~isnotempty_callback:
-         (function b ->
-           (*non_empty_type := b ;*)
-           okb#misc#set_sensitive true) (*(b && uri_entry#text <> ""))*)
-      in
-      let hbox =
-       GPack.hbox ~border_width:0
-        ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
-      let _ =
-       GMisc.label ~text:("Enter the list of its constructors:")
-        ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-      let cons_names_entry =
-       GEdit.entry ~editable:true
-        ~packing:(hbox#pack ~expand:true ~fill:true ~padding:5) () in
-      (newinputt,cons_names_entry)
-    ) (!get_names ())
-  in
-   vbox#remove hboxn#coerce ;
-   let hboxn =
-    GPack.hbox ~border_width:0
-     ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
-   let okb =
-    GButton.button ~label:"> Next"
-     ~packing:(hboxn#pack ~expand:false ~fill:false ~padding:5) () in
-   let cancelb =
-    GButton.button ~label:"Abort"
-     ~packing:(hboxn#pack ~expand:false ~fill:false ~padding:5) () in
-   ignore (cancelb#connect#clicked window#destroy) ;
-   ignore
-    (okb#connect#clicked
-      (function () ->
-        try
-         let names = !get_names () in
-         let types_and_cons =
-          List.map2
-           (fun name (newinputt,cons_names_entry) ->
-             let consnamesstr = cons_names_entry#text in
-             let cons_names = Str.split (Str.regexp " +") consnamesstr in
-             let metasenv,expr =
-              newinputt#get_metasenv_and_term ~context:[] ~metasenv:[]
-             in
-              match metasenv with
-                 [] -> expr,cons_names
-               | _ -> raise AmbiguousInput
-           ) names type_widgets
-         in
-          let uri = !get_uri () in
-          let _ =
-           (* Let's see if so far the definition is well-typed *)
-           let params = [] in
-           let paramsno = 0 in
-           (* To test if the arities of the inductive types are well *)
-           (* typed, we check the inductive block definition where   *)
-           (* no constructor is given to each type.                  *)
-           let tys =
-            List.map2
-             (fun name (ty,cons) -> (name, !inductive, ty, []))
-             names types_and_cons
-           in
-            CicTypeChecker.typecheck_mutual_inductive_defs uri
-             (tys,params,paramsno)
-          in
-           get_context_and_subst :=
-            (function () ->
-              let i = ref 0 in
-               List.fold_left2
-                (fun (context,subst) name (ty,_) ->
-                  let res =
-                   (Some (Cic.Name name, Cic.Decl ty))::context,
-                    (Cic.MutInd (uri,!i,[]))::subst
-                  in
-                   incr i ; res
-                ) ([],[]) names types_and_cons) ;
-           let types_and_cons' =
-            List.map2
-             (fun name (ty,cons) -> (name, !inductive, ty, phase3 name cons))
-             names types_and_cons
-           in
-            get_types_and_cons := (function () -> types_and_cons') ;
-            chosen := true ;
-            window#destroy ()
-        with
-         e ->
-          output_html outputhtml
-           ("
" ^ Printexc.to_string e ^ "
") ;
-      ))
- (* Third phase *)
- and phase3 name cons =
-  let get_cons_types = ref (function () -> assert false) in
-  let window2 =
-   GWindow.window
-    ~width:600 ~modal:true ~position:`CENTER
-    ~title:(name ^ " Constructors")
-    ~border_width:2 () in
-  let vbox = GPack.vbox ~packing:window2#add () in
-  let cons_type_widgets =
-   List.map
-    (function consname ->
-      let hbox =
-       GPack.hbox ~border_width:0
-        ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
-      let _ =
-       GMisc.label ~text:("Enter the type of " ^ consname ^ ":")
-        ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-      let scrolled_window =
-       GBin.scrolled_window ~border_width:5
-        ~packing:(vbox#pack ~expand:true ~padding:0) () in
-      let newinputt =
-       TexTermEditor'.term_editor
-        mqi_handle
-        ~width:400 ~height:20 ~packing:scrolled_window#add
-        ~share_id_to_uris_with:inputt ()
-        ~isnotempty_callback:
-         (function b ->
-           (* (*non_empty_type := b ;*)
-           okb#misc#set_sensitive true) (*(b && uri_entry#text <> ""))*) *)())
-      in
-       newinputt
-    ) cons in
-  let hboxn =
-   GPack.hbox ~border_width:0
-    ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
-  let okb =
-   GButton.button ~label:"> Next"
-    ~packing:(hboxn#pack ~expand:false ~fill:false ~padding:5) () in
-  let _ = okb#misc#set_sensitive true in
-  let cancelb =
-   GButton.button ~label:"Abort"
-    ~packing:(hboxn#pack ~expand:false ~fill:false ~padding:5) () in
-  ignore (window2#connect#destroy GMain.Main.quit) ;
-  ignore (cancelb#connect#clicked window2#destroy) ;
-  ignore
-   (okb#connect#clicked
-     (function () ->
-       try
-        chosen := true ;
-        let context,subst= !get_context_and_subst () in
-        let cons_types =
-         List.map2
-          (fun name inputt ->
-            let metasenv,expr =
-             inputt#get_metasenv_and_term ~context ~metasenv:[]
-            in
-             match metasenv with
-                [] ->
-                 let undebrujined_expr =
-                  List.fold_left
-                   (fun expr t -> CicSubstitution.subst t expr) expr subst
-                 in
-                  name, undebrujined_expr
-              | _ -> raise AmbiguousInput
-          ) cons cons_type_widgets
-        in
-         get_cons_types := (function () -> cons_types) ;
-         window2#destroy ()
-       with
-        e ->
-         output_html outputhtml
-          ("
" ^ Printexc.to_string e ^ "
") ;
-     )) ;
-  window2#show () ;
-  GtkThread.main ();
-  let okb_pressed = !chosen in
-   chosen := false ;
-   if (not okb_pressed) then
-    begin
-     window#destroy () ;
-     assert false (* The control never reaches this point *)
-    end
-   else
-    (!get_cons_types ())
- in
-  phase1 () ;
-  (* No more phases left or Abort pressed *) 
-  window#show () ;
-  GtkThread.main ();
-  window#destroy () ;
-  if !chosen then
-   try
-    let uri = !get_uri () in
-(*CSC: Da finire *)
-    let params = [] in
-    let tys = !get_types_and_cons () in
-     let obj = Cic.InductiveDefinition tys params !paramsno in
-      begin
-       try
-        prerr_endline (CicPp.ppobj obj) ;
-        CicTypeChecker.typecheck_mutual_inductive_defs uri
-         (tys,params,!paramsno) ;
-        with
-         e ->
-          prerr_endline "Offending mutual (co)inductive type declaration:" ;
-          prerr_endline (CicPp.ppobj obj) ;
-      end ;
-      (* We already know that obj is well-typed. We need to add it to the  *)
-      (* environment in order to compute the inner-types without having to *)
-      (* debrujin it or having to modify lots of other functions to avoid  *)
-      (* asking the environment for the MUTINDs we are defining now.       *)
-      CicEnvironment.put_inductive_definition uri obj ;
-      save_obj uri obj ;
-      show_in_show_window_obj uri obj
-   with
-    e ->
-     output_html outputhtml
-      ("
" ^ Printexc.to_string e ^ "
") ;
-;;
-
-let new_proof () =
- let inputt = ((rendering_window ())#inputt : TermEditor.term_editor) in
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
- let output = ((rendering_window ())#output : TermViewer.proof_viewer) in
- let notebook = (rendering_window ())#notebook in
-
- let chosen = ref false in
- let get_metasenv_and_term = ref (function _ -> assert false) in
- let get_uri = ref (function _ -> assert false) in
- let non_empty_type = ref false in
- let window =
-  GWindow.window
-   ~width:600 ~modal:true ~title:"New Proof or Definition"
-   ~border_width:2 () in
- let vbox = GPack.vbox ~packing:window#add () in
- let hbox =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label ~text:"Enter the URI for the new theorem or definition:"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let uri_entry =
-  GEdit.entry ~editable:true
-   ~packing:(hbox#pack ~expand:true ~fill:true ~padding:5) () in
- let hbox1 =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ =
-  GMisc.label ~text:"Enter the theorem or definition type:"
-   ~packing:(hbox1#pack ~expand:false ~fill:false ~padding:5) () in
- let scrolled_window =
-  GBin.scrolled_window ~border_width:5
-   ~packing:(vbox#pack ~expand:true ~padding:0) () in
- (* the content of the scrolled_window is moved below (see comment) *)
- let hbox =
-  GPack.hbox ~border_width:0
-   ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let okb =
-  GButton.button ~label:"Ok"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let _ = okb#misc#set_sensitive false in
- let cancelb =
-  GButton.button ~label:"Cancel"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- (* moved here to have visibility of the ok button *)
- let newinputt =
-  TexTermEditor'.term_editor
-   mqi_handle
-   ~width:400 ~height:100 ~packing:scrolled_window#add
-   ~share_id_to_uris_with:inputt ()
-   ~isnotempty_callback:
-    (function b ->
-      non_empty_type := b ;
-      okb#misc#set_sensitive (b && uri_entry#text <> ""))
- in
- let _ =
-let xxx = inputt#get_as_string in
-prerr_endline ("######################## " ^ xxx) ;
-  newinputt#set_term xxx ;
-(*
-  newinputt#set_term inputt#get_as_string ;
-*)
-  inputt#reset in
- let _ =
-  uri_entry#connect#changed
-   (function () ->
-     okb#misc#set_sensitive (!non_empty_type && uri_entry#text <> ""))
- in
- ignore (window#connect#destroy GMain.Main.quit) ;
- ignore (cancelb#connect#clicked window#destroy) ;
- ignore
-  (okb#connect#clicked
-    (function () ->
-      chosen := true ;
-      try
-       let metasenv,parsed = newinputt#get_metasenv_and_term [] [] in
-       let uristr = "cic:" ^ uri_entry#text in
-       let uri = UriManager.uri_of_string uristr in
-        if String.sub uristr (String.length uristr - 4) 4 <> ".con" then
-         raise NotAUriToAConstant
-        else
-         begin
-          try
-           ignore (Getter.resolve uri) ;
-           raise UriAlreadyInUse
-          with
-           Getter.Unresolved ->
-            get_metasenv_and_term := (function () -> metasenv,parsed) ;
-            get_uri := (function () -> uri) ; 
-            window#destroy ()
-         end
-      with
-       e ->
-        output_html outputhtml
-         ("
" ^ Printexc.to_string e ^ "
") ;
-  )) ;
- window#show () ;
- GtkThread.main ();
- if !chosen then
-  try
-   let metasenv,expr = !get_metasenv_and_term () in
-    let _  = CicTypeChecker.type_of_aux' metasenv [] expr in
-     ProofEngine.proof :=
-      Some (!get_uri (), (1,[],expr)::metasenv, Cic.Meta (1,[]), expr) ;
-     ProofEngine.goal := Some 1 ;
-     refresh_goals notebook ;
-     refresh_proof output ;
-     !save_set_sensitive true ;
-     inputt#reset ;
-     ProofEngine.intros ~mk_fresh_name_callback () ;
-     refresh_goals notebook ;
-     refresh_proof output
-  with
-     InvokeTactics.RefreshSequentException e ->
-      output_html outputhtml
-       ("
Exception raised during the refresh of the " ^
-        "sequent: " ^ Printexc.to_string e ^ "
")
-   | InvokeTactics.RefreshProofException e ->
-      output_html outputhtml
-       ("
Exception raised during the refresh of the " ^
-        "proof: " ^ Printexc.to_string e ^ "
")
-   | e ->
-      output_html outputhtml
-       ("
" ^ Printexc.to_string e ^ "
") ;
-;;
-
-let check_term_in_scratch scratch_window metasenv context expr = 
- try
-  let ty = CicTypeChecker.type_of_aux' metasenv context expr in
-  let expr = Cic.Cast (expr,ty) in
-   scratch_window#show () ;
-   scratch_window#set_term expr ;
-   scratch_window#set_context context ;
-   scratch_window#set_metasenv metasenv ;
-   scratch_window#sequent_viewer#load_sequent metasenv (111,context,expr)
- with
-  e ->
-   print_endline ("? " ^ CicPp.ppterm expr) ;
-   raise e
-;;
-
-let check scratch_window () =
- let inputt = ((rendering_window ())#inputt : TermEditor.term_editor) in
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
-  let metasenv =
-   match !ProofEngine.proof with
-      None -> []
-    | Some (_,metasenv,_,_) -> metasenv
-  in
-  let context =
-   match !ProofEngine.goal with
-      None -> []
-    | Some metano ->
-       let (_,canonical_context,_) =
-        List.find (function (m,_,_) -> m=metano) metasenv
-       in
-        canonical_context
-  in
-   try
-    let metasenv',expr = inputt#get_metasenv_and_term context metasenv in
-     check_term_in_scratch scratch_window metasenv' context expr
-   with
-    e ->
-     output_html outputhtml
-      ("
" ^ Printexc.to_string e ^ "
") ;
-;;
-
-let show () =
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
-  try
-   show_in_show_window_uri (input_or_locate_uri ~title:"Show")
-  with
-   e ->
-    output_html outputhtml
-     ("
" ^ Printexc.to_string e ^ "
") ;
-;;
-
-exception NotADefinition;;
-
-let open_ () =
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
- let output = ((rendering_window ())#output : TermViewer.proof_viewer) in
- let notebook = (rendering_window ())#notebook in
-   try
-    let uri = input_or_locate_uri ~title:"Open" in
-     CicTypeChecker.typecheck uri ;
-     let metasenv,bo,ty =
-      match CicEnvironment.get_cooked_obj uri with
-         Cic.Constant (_,Some bo,ty,_) -> [],bo,ty
-       | Cic.CurrentProof (_,metasenv,bo,ty,_) -> metasenv,bo,ty
-       | Cic.Constant _
-       | Cic.Variable _
-       | Cic.InductiveDefinition _ -> raise NotADefinition
-     in
-      ProofEngine.proof :=
-       Some (uri, metasenv, bo, ty) ;
-      ProofEngine.goal := None ;
-      refresh_goals notebook ;
-      refresh_proof output ;
-      !save_set_sensitive true
-   with
-      InvokeTactics.RefreshSequentException e ->
-       output_html outputhtml
-        ("
Exception raised during the refresh of the " ^
-         "sequent: " ^ Printexc.to_string e ^ "
")
-    | InvokeTactics.RefreshProofException e ->
-       output_html outputhtml
-        ("
Exception raised during the refresh of the " ^
-         "proof: " ^ Printexc.to_string e ^ "
")
-    | e ->
-       output_html outputhtml
-        ("
" ^ Printexc.to_string e ^ "
") ;
-;;
-
-let show_query_results results =
- let window =
-  GWindow.window
-   ~modal:false ~title:"Query results." ~border_width:2 () in
- let vbox = GPack.vbox ~packing:window#add () in
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let lMessage =
-  GMisc.label
-   ~text:"Click on a URI to show that object"
-   ~packing:hbox#add () in
- let scrolled_window =
-  GBin.scrolled_window ~border_width:10 ~height:400 ~width:600
-   ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in
- let clist = GList.clist ~columns:1 ~packing:scrolled_window#add () in
-  ignore
-   (List.map
-     (function (uri,_) ->
-       let n =
-        clist#append [uri]
-       in
-        clist#set_row ~selectable:false n
-     ) results
-   ) ;
-  clist#columns_autosize () ;
-  ignore
-   (clist#connect#select_row
-     (fun ~row ~column ~event ->
-       let (uristr,_) = List.nth results row in
-        match
-         MQueryMisc.cic_textual_parser_uri_of_string
-          (MQueryMisc.wrong_xpointer_format_from_wrong_xpointer_format'
-            uristr)
-        with
-           CicTextualParser0.ConUri uri
-         | CicTextualParser0.VarUri uri
-         | CicTextualParser0.IndTyUri (uri,_)
-         | CicTextualParser0.IndConUri (uri,_,_) ->
-            show_in_show_window_uri uri
-     )
-   ) ;
-  window#show ()
-;;
-
-let refine_constraints (must_obj,must_rel,must_sort) =
- let chosen = ref false in
- let use_only = ref false in
- let window =
-  GWindow.window
-   ~modal:true ~title:"Constraints refinement."
-   ~width:800 ~border_width:2 () in
- let vbox = GPack.vbox ~packing:window#add () in
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let lMessage =
-  GMisc.label
-   ~text: "\"Only\" constraints can be enforced or not."
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let onlyb =
-  GButton.toggle_button ~label:"Enforce \"only\" constraints"
-   ~active:false ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) ()
- in
-  ignore
-   (onlyb#connect#toggled (function () -> use_only := onlyb#active)) ;
- (* Notebook for the constraints choice *)
- let notebook =
-  GPack.notebook ~scrollable:true
-   ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in
- (* Rel constraints *)
- let label =
-  GMisc.label
-   ~text: "Constraints on Rels" () in
- let vbox' =
-  GPack.vbox ~packing:(notebook#append_page ~tab_label:label#coerce)
-   () in
- let hbox =
-  GPack.hbox ~packing:(vbox'#pack ~expand:false ~fill:false ~padding:5) () in
- let lMessage =
-  GMisc.label
-   ~text: "You can now specify the constraints on Rels."
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let expected_height = 25 * (List.length must_rel + 2) in
- let height = if expected_height > 400 then 400 else expected_height in
- let scrolled_window =
-  GBin.scrolled_window ~border_width:10 ~height ~width:600
-   ~packing:(vbox'#pack ~expand:true ~fill:true ~padding:5) () in
- let scrolled_vbox = GPack.vbox ~packing:scrolled_window#add_with_viewport () in
- let mk_depth_button (hbox:GPack.box) d =
-    let mutable_ref = ref (Some d) in
-    let depthb =
-     GButton.toggle_button
-      ~label:("depth = " ^ string_of_int d) 
-      ~active:true
-      ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) ()
-    in
-     ignore
-      (depthb#connect#toggled
-       (function () ->
-        let sel_depth = if depthb#active then Some d else None in
-         mutable_ref := sel_depth
-       )) ; mutable_ref
- in
- let rel_constraints =
-  List.map
-   (function p ->
-     let hbox =
-      GPack.hbox
-       ~packing:(scrolled_vbox#pack ~expand:false ~fill:false ~padding:5) () in
-     let lMessage =
-      GMisc.label
-       ~text:(MQGU.text_of_position (p:>MQGT.full_position))
-       ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-     match p with
-      | `MainHypothesis None 
-      | `MainConclusion None -> p, ref None
-      | `MainHypothesis (Some depth') 
-      | `MainConclusion (Some depth') -> p, mk_depth_button hbox depth'
-   ) must_rel in
- (* Sort constraints *)
- let label =
-  GMisc.label
-   ~text: "Constraints on Sorts" () in
- let vbox' =
-  GPack.vbox ~packing:(notebook#append_page ~tab_label:label#coerce)
-   () in
- let hbox =
-  GPack.hbox ~packing:(vbox'#pack ~expand:false ~fill:false ~padding:5) () in
- let lMessage =
-  GMisc.label
-   ~text: "You can now specify the constraints on Sorts."
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let expected_height = 25 * (List.length must_sort + 2) in
- let height = if expected_height > 400 then 400 else expected_height in
- let scrolled_window =
-  GBin.scrolled_window ~border_width:10 ~height ~width:600
-   ~packing:(vbox'#pack ~expand:true ~fill:true ~padding:5) () in
- let scrolled_vbox = GPack.vbox ~packing:scrolled_window#add_with_viewport () in
- let sort_constraints =
-  List.map
-   (function (p, sort) ->
-     let hbox =
-      GPack.hbox
-       ~packing:(scrolled_vbox#pack ~expand:false ~fill:false ~padding:5) () in
-     let lMessage =
-      GMisc.label
-       ~text:(MQGU.text_of_sort sort ^ " " ^ MQGU.text_of_position (p:>MQGT.full_position))
-       ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-     match p with
-      | `MainHypothesis None 
-      | `MainConclusion None -> p, ref None, sort
-      | `MainHypothesis (Some depth') 
-      | `MainConclusion (Some depth') -> p, mk_depth_button hbox depth', sort
-   ) must_sort in
- (* Obj constraints *)
- let label =
-  GMisc.label
-   ~text: "Constraints on constants" () in
- let vbox' =
-  GPack.vbox ~packing:(notebook#append_page ~tab_label:label#coerce)
-   () in
- let hbox =
-  GPack.hbox ~packing:(vbox'#pack ~expand:false ~fill:false ~padding:5) () in
- let lMessage =
-  GMisc.label
-   ~text: "You can now specify the constraints on constants."
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let expected_height = 25 * (List.length must_obj + 2) in
- let height = if expected_height > 400 then 400 else expected_height in
- let scrolled_window =
-  GBin.scrolled_window ~border_width:10 ~height ~width:600
-   ~packing:(vbox'#pack ~expand:true ~fill:true ~padding:5) () in
- let scrolled_vbox = GPack.vbox ~packing:scrolled_window#add_with_viewport () in
- let obj_constraints =
-  List.map
-   (function (p, uri) ->
-     let hbox =
-      GPack.hbox
-       ~packing:(scrolled_vbox#pack ~expand:false ~fill:false ~padding:5) () in
-     let lMessage =
-      GMisc.label
-       ~text:(uri ^ " " ^ (MQGU.text_of_position p))
-       ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-     match p with
-      | `InBody
-      | `InHypothesis 
-      | `InConclusion 
-      | `MainHypothesis None 
-      | `MainConclusion None -> p, ref None, uri
-      | `MainHypothesis (Some depth') 
-      | `MainConclusion (Some depth') -> p, mk_depth_button hbox depth', uri
-   ) must_obj in
- (* Confirm/abort buttons *)
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let okb =
-  GButton.button ~label:"Ok"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let cancelb =
-  GButton.button ~label:"Abort"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) ()
- in
-  ignore (window#connect#destroy GMain.Main.quit) ;
-  ignore (cancelb#connect#clicked window#destroy) ;
-  ignore
-   (okb#connect#clicked (function () -> chosen := true ; window#destroy ()));
-  window#set_position `CENTER ;
-  window#show () ;
-  GtkThread.main ();
-  if !chosen then
-   let chosen_must_rel =
-    List.map
-     (function (position, ref_depth) -> MQGU.set_main_position position !ref_depth)
-     rel_constraints
-   in
-   let chosen_must_sort =
-    List.map
-     (function (position, ref_depth, sort) -> 
-      MQGU.set_main_position position !ref_depth,sort)
-     sort_constraints
-   in
-   let chosen_must_obj =
-    List.map
-     (function (position, ref_depth, uri) -> MQGU.set_full_position position !ref_depth, uri)
-     obj_constraints
-   in
-    (chosen_must_obj,chosen_must_rel,chosen_must_sort),
-     (if !use_only then
-(*CSC: ???????????????????????? I assume that must and only are the same... *)
-       Some chosen_must_obj,Some chosen_must_rel,Some chosen_must_sort
-      else
-       None,None,None
-     )
-  else
-   raise NoChoice
-;;
-
-let completeSearchPattern () =
- let inputt = ((rendering_window ())#inputt : TermEditor.term_editor) in
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
-  try
-   let metasenv,expr = inputt#get_metasenv_and_term ~context:[] ~metasenv:[] in
-   let must = CGSearchPattern.get_constraints expr in
-   let must',only = refine_constraints must in
-   let query =
-    MQG.query_of_constraints (Some MQGU.universe_for_search_pattern) must' only
-   in
-   let results = MQI.execute mqi_handle query in 
-    show_query_results results
-  with
-   e ->
-    output_html outputhtml
-     ("
" ^ Printexc.to_string e ^ "
") ;
-;;
-
-let insertQuery () =
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
-  try
-   let chosen = ref None in
-   let window =
-    GWindow.window
-     ~modal:true ~title:"Insert Query (Experts Only)" ~border_width:2 () in
-   let vbox = GPack.vbox ~packing:window#add () in
-   let label =
-    GMisc.label ~text:"Insert Query. For Experts Only."
-     ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
-   let scrolled_window =
-    GBin.scrolled_window ~border_width:10 ~height:400 ~width:600
-     ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in
-   let input = GEdit.text ~editable:true
-    ~packing:scrolled_window#add () in
-   let hbox =
-    GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
-   let okb =
-    GButton.button ~label:"Ok"
-     ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-   let loadb =
-    GButton.button ~label:"Load from file..."
-     ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-   let cancelb =
-    GButton.button ~label:"Abort"
-     ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-   ignore (window#connect#destroy GMain.Main.quit) ;
-   ignore (cancelb#connect#clicked window#destroy) ;
-   ignore
-    (okb#connect#clicked
-      (function () ->
-        chosen := Some (input#get_chars 0 input#length) ; window#destroy ())) ;
-   ignore
-    (loadb#connect#clicked
-      (function () ->
-        match
-         GToolbox.select_file ~title:"Select Query File" ()
-        with
-           None -> ()
-         | Some filename ->
-            let inch = open_in filename in
-             let rec read_file () =
-              try
-               let line = input_line inch in
-                line ^ "\n" ^ read_file ()
-              with
-               End_of_file -> ""
-             in
-              let text = read_file () in
-               input#delete_text 0 input#length ;
-               ignore (input#insert_text text ~pos:0))) ;
-   window#set_position `CENTER ;
-   window#show () ;
-   GtkThread.main ();
-   match !chosen with
-      None -> ()
-    | Some q ->
-       let results =
-        MQI.execute mqi_handle (MQueryUtil.query_of_text (Lexing.from_string q))
-       in
-        show_query_results results
-  with
-   e ->
-    output_html outputhtml
-     ("
" ^ Printexc.to_string e ^ "
") ;
-;;
-
-let choose_must list_of_must only =
- let chosen = ref None in
- let user_constraints = ref [] in
- let window =
-  GWindow.window
-   ~modal:true ~title:"Query refinement." ~border_width:2 () in
- let vbox = GPack.vbox ~packing:window#add () in
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let lMessage =
-  GMisc.label
-   ~text:
-    ("You can now specify the genericity of the query. " ^
-     "The more generic the slower.")
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let lMessage =
-  GMisc.label
-   ~text:
-    "Suggestion: start with faster queries before moving to more generic ones."
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let notebook =
-  GPack.notebook ~scrollable:true
-   ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in
- let _ =
-  let page = ref 0 in
-  let last = List.length list_of_must in
-  List.map
-   (function must ->
-     incr page ;
-     let label =
-      GMisc.label ~text:
-       (if !page = 1 then "More generic" else
-         if !page = last then "More precise" else "          ") () in
-     let expected_height = 25 * (List.length must + 2) in
-     let height = if expected_height > 400 then 400 else expected_height in
-     let scrolled_window =
-      GBin.scrolled_window ~border_width:10 ~height ~width:600
-       ~packing:(notebook#append_page ~tab_label:label#coerce) () in
-     let clist =
-        GList.clist ~columns:2 ~packing:scrolled_window#add
-         ~titles:["URI" ; "Position"] ()
-     in
-      ignore
-       (List.map
-         (function (position, uri) ->
-           let n =
-            clist#append 
-             [uri; MQGUtil.text_of_position position]
-           in
-            clist#set_row ~selectable:false n
-         ) must
-       ) ;
-      clist#columns_autosize ()
-   ) list_of_must in
- let _ =
-  let label = GMisc.label ~text:"User provided" () in
-  let vbox =
-   GPack.vbox ~packing:(notebook#append_page ~tab_label:label#coerce) () in
-  let hbox =
-   GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
-  let lMessage =
-   GMisc.label
-   ~text:"Select the constraints that must be satisfied and press OK."
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-  let expected_height = 25 * (List.length only + 2) in
-  let height = if expected_height > 400 then 400 else expected_height in
-  let scrolled_window =
-   GBin.scrolled_window ~border_width:10 ~height ~width:600
-    ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in
-  let clist =
-   GList.clist ~columns:2 ~packing:scrolled_window#add
-    ~selection_mode:`EXTENDED
-    ~titles:["URI" ; "Position"] ()
-  in
-   ignore
-    (List.map
-      (function (position, uri) ->
-        let n =
-         clist#append 
-          [uri; MQGUtil.text_of_position position]
-        in
-         clist#set_row ~selectable:true n
-      ) only
-    ) ;
-   clist#columns_autosize () ;
-   ignore
-    (clist#connect#select_row
-      (fun ~row ~column ~event ->
-        user_constraints := (List.nth only row)::!user_constraints)) ;
-   ignore
-    (clist#connect#unselect_row
-      (fun ~row ~column ~event ->
-        user_constraints :=
-         List.filter
-          (function uri -> uri != (List.nth only row)) !user_constraints)) ;
- in
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let okb =
-  GButton.button ~label:"Ok"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let cancelb =
-  GButton.button ~label:"Abort"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- (* actions *)
- ignore (window#connect#destroy GMain.Main.quit) ;
- ignore (cancelb#connect#clicked window#destroy) ;
- ignore
-  (okb#connect#clicked
-    (function () -> chosen := Some notebook#current_page ; window#destroy ())) ;
- window#set_position `CENTER ;
- window#show () ;
- GtkThread.main ();
- match !chosen with
-    None -> raise NoChoice
-  | Some n ->
-     if n = List.length list_of_must then
-      (* user provided constraints *)
-      !user_constraints
-     else
-      List.nth list_of_must n
-;;
-
-let searchPattern () =
- let inputt = ((rendering_window ())#inputt : TermEditor.term_editor) in
- let outputhtml = ((rendering_window ())#outputhtml : GHtml.xmhtml) in
-  try
-    let proof =
-     match !ProofEngine.proof with
-        None -> assert false
-      | Some proof -> proof
-    in
-     match !ProofEngine.goal with
-      | None -> ()
-      | Some metano ->
-         let uris' =
-           TacticChaser.matchConclusion
-	    mqi_handle
-            ~output_html:(output_html outputhtml) ~choose_must ()
-            ~status:(proof, metano)
-         in
-         let uri' =
-          user_uri_choice ~title:"Ambiguous input."
-          ~msg: "Many lemmas can be successfully applied. Please, choose one:"
-           uris'
-         in
-          inputt#set_term uri' ;
-          InvokeTactics'.apply ()
-  with
-   e -> 
-    output_html outputhtml 
-     ("
" ^ Printexc.to_string e ^ "
")
-;;
-      
-let choose_selection mmlwidget (element : Gdome.element option) =
- let module G = Gdome in
-  let rec aux element =
-   if element#hasAttributeNS
-       ~namespaceURI:Misc.helmns
-       ~localName:(G.domString "xref")
-   then
-     mmlwidget#set_selection (Some element)
-   else
-    try
-      match element#get_parentNode with
-         None -> assert false
-       (*CSC: OCAML DIVERGES!
-       | Some p -> aux (new G.element_of_node p)
-       *)
-       | Some p -> aux (new Gdome.element_of_node p)
-    with
-       GdomeInit.DOMCastException _ ->
-        prerr_endline
-         "******* trying to select above the document root ********"
-  in
-   match element with
-     Some x -> aux x
-   | None   -> mmlwidget#set_selection None
-;;
-
-(* STUFF TO BUILD THE GTK INTERFACE *)
-
-(* Stuff for the widget settings *)
-
-let export_to_postscript output =
- let lastdir = ref (Unix.getcwd ()) in
-  function () ->
-   match
-    GToolbox.select_file ~title:"Export to PostScript"
-     ~dir:lastdir ~filename:"screenshot.ps" ()
-   with
-      None -> ()
-    | Some filename ->
-       (output :> GMathView.math_view)#export_to_postscript
-         ~filename:filename ();
-;;
-
-let activate_t1 output button_set_anti_aliasing
- button_set_transparency export_to_postscript_menu_item
- button_t1 ()
-=
- let is_set = button_t1#active in
-  output#set_font_manager_type
-   ~fm_type:(if is_set then `font_manager_t1 else `font_manager_gtk) ;
-  if is_set then
-   begin
-    button_set_anti_aliasing#misc#set_sensitive true ;
-    button_set_transparency#misc#set_sensitive true ;
-    export_to_postscript_menu_item#misc#set_sensitive true ;
-   end
-  else
-   begin
-    button_set_anti_aliasing#misc#set_sensitive false ;
-    button_set_transparency#misc#set_sensitive false ;
-    export_to_postscript_menu_item#misc#set_sensitive false ;
-   end
-;;
-
-let set_anti_aliasing output button_set_anti_aliasing () =
- output#set_anti_aliasing button_set_anti_aliasing#active
-;;
-
-let set_transparency output button_set_transparency () =
- output#set_transparency button_set_transparency#active
-;;
-
-let changefont output font_size_spinb () =
- output#set_font_size font_size_spinb#value_as_int
-;;
-
-let set_log_verbosity output log_verbosity_spinb () =
- output#set_log_verbosity log_verbosity_spinb#value_as_int
-;;
-
-class settings_window output sw
- export_to_postscript_menu_item selection_changed_callback
-=
- let settings_window = GWindow.window ~title:"GtkMathView settings" () in
- let vbox =
-  GPack.vbox ~packing:settings_window#add () in
- let table =
-  GPack.table
-   ~rows:1 ~columns:3 ~homogeneous:false ~row_spacings:5 ~col_spacings:5
-   ~border_width:5 ~packing:vbox#add () in
- let button_t1 =
-  GButton.toggle_button ~label:"activate t1 fonts"
-   ~packing:(table#attach ~left:0 ~top:0) () in
- let button_set_anti_aliasing =
-  GButton.toggle_button ~label:"set_anti_aliasing"
-   ~packing:(table#attach ~left:0 ~top:1) () in
- let button_set_transparency =
-  GButton.toggle_button ~label:"set_transparency"
-   ~packing:(table#attach ~left:2 ~top:1) () in
- let table =
-  GPack.table
-   ~rows:2 ~columns:2 ~homogeneous:false ~row_spacings:5 ~col_spacings:5
-   ~border_width:5 ~packing:vbox#add () in
- let font_size_label =
-  GMisc.label ~text:"font size:"
-   ~packing:(table#attach ~left:0 ~top:0 ~expand:`NONE) () in
- let font_size_spinb =
-  let sadj =
-   GData.adjustment ~value:(float_of_int output#get_font_size)
-    ~lower:5.0 ~upper:50.0 ~step_incr:1.0 ()
-  in
-   GEdit.spin_button 
-    ~adjustment:sadj ~packing:(table#attach ~left:1 ~top:0 ~fill:`NONE) () in
- let log_verbosity_label =
-  GMisc.label ~text:"log verbosity:"
-   ~packing:(table#attach ~left:0 ~top:1) () in
- let log_verbosity_spinb =
-  let sadj =
-   GData.adjustment ~value:0.0 ~lower:0.0 ~upper:3.0 ~step_incr:1.0 ()
-  in
-   GEdit.spin_button 
-    ~adjustment:sadj ~packing:(table#attach ~left:1 ~top:1) () in
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let closeb =
-  GButton.button ~label:"Close"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
-object(self)
- method show = settings_window#show
- initializer
-  button_set_anti_aliasing#misc#set_sensitive false ;
-  button_set_transparency#misc#set_sensitive false ;
-  (* Signals connection *)
-  ignore(button_t1#connect#clicked
-   (activate_t1 output button_set_anti_aliasing
-    button_set_transparency export_to_postscript_menu_item button_t1)) ;
-  ignore(font_size_spinb#connect#changed (changefont output font_size_spinb)) ;
-  ignore(button_set_anti_aliasing#connect#toggled
-   (set_anti_aliasing output button_set_anti_aliasing));
-  ignore(button_set_transparency#connect#toggled
-   (set_transparency output button_set_transparency)) ;
-  ignore(log_verbosity_spinb#connect#changed
-   (set_log_verbosity output log_verbosity_spinb)) ;
-  ignore(closeb#connect#clicked settings_window#misc#hide)
-end;;
-
-(* Scratch window *)
-
-class scratch_window =
- let window =
-  GWindow.window
-    ~title:"MathML viewer"
-    ~border_width:2 () in
- let vbox =
-  GPack.vbox ~packing:window#add () in
- let hbox =
-  GPack.hbox ~packing:(vbox#pack ~expand:false ~fill:false ~padding:5) () in
- let whdb =
-  GButton.button ~label:"Whd"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let reduceb =
-  GButton.button ~label:"Reduce"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let simplb =
-  GButton.button ~label:"Simpl"
-   ~packing:(hbox#pack ~expand:false ~fill:false ~padding:5) () in
- let scrolled_window =
-  GBin.scrolled_window ~border_width:10
-   ~packing:(vbox#pack ~expand:true ~padding:5) () in
- let sequent_viewer =
-  TermViewer.sequent_viewer
-   ~packing:(scrolled_window#add) ~width:400 ~height:280 () in
-object(self)
- val mutable term = Cic.Rel 1                 (* dummy value *)
- val mutable context = ([] : Cic.context)     (* dummy value *)
- val mutable metasenv = ([] : Cic.metasenv)   (* dummy value *)
- method sequent_viewer = sequent_viewer
- method show () = window#misc#hide () ; window#show ()
- method term = term
- method set_term t = term <- t
- method context = context
- method set_context t = context <- t
- method metasenv = metasenv
- method set_metasenv t = metasenv <- t
- initializer
-  ignore
-   (sequent_viewer#connect#selection_changed (choose_selection sequent_viewer));
-  ignore(window#event#connect#delete (fun _ -> window#misc#hide () ; true )) ;
-  ignore(whdb#connect#clicked InvokeTactics'.whd_in_scratch) ;
-  ignore(reduceb#connect#clicked InvokeTactics'.reduce_in_scratch) ;
-  ignore(simplb#connect#clicked InvokeTactics'.simpl_in_scratch)
-end;;
-
-let open_contextual_menu_for_selected_terms mmlwidget infos =
- let button = GdkEvent.Button.button infos in 
- let terms_selected = List.length mmlwidget#get_selections > 0 in
-  if button = 3 then
-   begin
-    let time = GdkEvent.Button.time infos in
-    let menu = GMenu.menu () in
-    let f = new GMenu.factory menu in
-    let whd_menu_item =
-     f#add_item "Whd" ~key:GdkKeysyms._W ~callback:InvokeTactics'.whd in
-    let reduce_menu_item =
-     f#add_item "Reduce" ~key:GdkKeysyms._R ~callback:InvokeTactics'.reduce in
-    let simpl_menu_item =
-     f#add_item "Simpl" ~key:GdkKeysyms._S ~callback:InvokeTactics'.simpl in
-    let _ = f#add_separator () in
-    let generalize_menu_item =
-     f#add_item "Generalize"
-      ~key:GdkKeysyms._G ~callback:InvokeTactics'.generalize in
-    let _ = f#add_separator () in
-    let clear_menu_item =
-     f#add_item "Clear" ~key:GdkKeysyms._C ~callback:InvokeTactics'.clear in
-    let clearbody_menu_item =
-     f#add_item "ClearBody"
-      ~key:GdkKeysyms._B ~callback:InvokeTactics'.clearbody
-    in
-     whd_menu_item#misc#set_sensitive terms_selected ; 
-     reduce_menu_item#misc#set_sensitive terms_selected ; 
-     simpl_menu_item#misc#set_sensitive terms_selected ;
-     generalize_menu_item#misc#set_sensitive terms_selected ;
-     clear_menu_item#misc#set_sensitive terms_selected ;
-     clearbody_menu_item#misc#set_sensitive terms_selected ;
-     menu#popup ~button ~time
-   end ;
-  true
-;;
-
-class page () =
- let vbox1 = GPack.vbox () in
-object(self)
- val mutable proofw_ref = None
- val mutable compute_ref = None
- method proofw =
-  Lazy.force self#compute ;
-  match proofw_ref with
-     None -> assert false
-   | Some proofw -> proofw
- method content = vbox1
- method compute =
-  match compute_ref with
-     None -> assert false
-   | Some compute -> compute
- initializer
-  compute_ref <-
-   Some (lazy (
-   let scrolled_window1 =
-    GBin.scrolled_window ~border_width:10
-     ~packing:(vbox1#pack ~expand:true ~padding:5) () in
-   let proofw =
-    TermViewer.sequent_viewer ~width:400 ~height:275
-     ~packing:(scrolled_window1#add) () in
-   let _ = proofw_ref <- Some proofw in
-   let hbox3 =
-    GPack.hbox ~packing:(vbox1#pack ~expand:false ~fill:false ~padding:5) () in
-   let ringb =
-    GButton.button ~label:"Ring"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let fourierb =
-    GButton.button ~label:"Fourier"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let reflexivityb =
-    GButton.button ~label:"Reflexivity"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let symmetryb =
-    GButton.button ~label:"Symmetry"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let assumptionb =
-    GButton.button ~label:"Assumption"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let contradictionb =
-    GButton.button ~label:"Contradiction"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let hbox4 =
-    GPack.hbox ~packing:(vbox1#pack ~expand:false ~fill:false ~padding:5) () in
-   let existsb =
-    GButton.button ~label:"Exists"
-     ~packing:(hbox4#pack ~expand:false ~fill:false ~padding:5) () in
-   let splitb =
-    GButton.button ~label:"Split"
-     ~packing:(hbox4#pack ~expand:false ~fill:false ~padding:5) () in
-   let leftb =
-    GButton.button ~label:"Left"
-     ~packing:(hbox4#pack ~expand:false ~fill:false ~padding:5) () in
-   let rightb =
-    GButton.button ~label:"Right"
-     ~packing:(hbox4#pack ~expand:false ~fill:false ~padding:5) () in
-   let searchpatternb =
-    GButton.button ~label:"SearchPattern_Apply"
-     ~packing:(hbox4#pack ~expand:false ~fill:false ~padding:5) () in
-   let hbox5 =
-    GPack.hbox ~packing:(vbox1#pack ~expand:false ~fill:false ~padding:5) () in
-   let exactb =
-    GButton.button ~label:"Exact"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let introsb =
-    GButton.button ~label:"Intros"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let applyb =
-    GButton.button ~label:"Apply"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let elimintrossimplb =
-    GButton.button ~label:"ElimIntrosSimpl"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let elimtypeb =
-    GButton.button ~label:"ElimType"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let foldwhdb =
-    GButton.button ~label:"Fold_whd"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let foldreduceb =
-    GButton.button ~label:"Fold_reduce"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let hbox6 =
-    GPack.hbox ~packing:(vbox1#pack ~expand:false ~fill:false ~padding:5) () in
-   let foldsimplb =
-    GButton.button ~label:"Fold_simpl"
-     ~packing:(hbox6#pack ~expand:false ~fill:false ~padding:5) () in
-   let cutb =
-    GButton.button ~label:"Cut"
-     ~packing:(hbox6#pack ~expand:false ~fill:false ~padding:5) () in
-   let changeb =
-    GButton.button ~label:"Change"
-     ~packing:(hbox6#pack ~expand:false ~fill:false ~padding:5) () in
-   let letinb =
-    GButton.button ~label:"Let ... In"
-     ~packing:(hbox6#pack ~expand:false ~fill:false ~padding:5) () in
-   let rewritesimplb =
-    GButton.button ~label:"RewriteSimpl ->"
-     ~packing:(hbox6#pack ~expand:false ~fill:false ~padding:5) () in
-   let rewritebacksimplb =
-    GButton.button ~label:"RewriteSimpl <-"
-     ~packing:(hbox6#pack ~expand:false ~fill:false ~padding:5) () in
-   let hbox7 =
-    GPack.hbox ~packing:(vbox1#pack ~expand:false ~fill:false ~padding:5) () in
-   let absurdb =
-    GButton.button ~label:"Absurd"
-     ~packing:(hbox7#pack ~expand:false ~fill:false ~padding:5) () in
-   let decomposeb =
-    GButton.button ~label:"Decompose"
-     ~packing:(hbox7#pack ~expand:false ~fill:false ~padding:5) () in
-   let transitivityb =
-    GButton.button ~label:"Transitivity"
-     ~packing:(hbox7#pack ~expand:false ~fill:false ~padding:5) () in
-   let replaceb =
-    GButton.button ~label:"Replace"
-     ~packing:(hbox7#pack ~expand:false ~fill:false ~padding:5) () in
-   let injectionb =
-    GButton.button ~label:"Injection"
-     ~packing:(hbox7#pack ~expand:false ~fill:false ~padding:5) () in
-   let discriminateb =
-    GButton.button ~label:"Discriminate"
-     ~packing:(hbox7#pack ~expand:false ~fill:false ~padding:5) () in
-(* Zack: spostare in una toolbar
-   let generalizeb =
-    GButton.button ~label:"Generalize"
-     ~packing:(hbox7#pack ~expand:false ~fill:false ~padding:5) () in
-   let clearbodyb =
-    GButton.button ~label:"ClearBody"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let clearb =
-    GButton.button ~label:"Clear"
-     ~packing:(hbox5#pack ~expand:false ~fill:false ~padding:5) () in
-   let whdb =
-    GButton.button ~label:"Whd"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let reduceb =
-    GButton.button ~label:"Reduce"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-   let simplb =
-    GButton.button ~label:"Simpl"
-     ~packing:(hbox3#pack ~expand:false ~fill:false ~padding:5) () in
-*)
-
-   ignore(exactb#connect#clicked InvokeTactics'.exact) ;
-   ignore(applyb#connect#clicked InvokeTactics'.apply) ;
-   ignore(elimintrossimplb#connect#clicked InvokeTactics'.elimintrossimpl) ;
-   ignore(elimtypeb#connect#clicked InvokeTactics'.elimtype) ;
-   ignore(foldwhdb#connect#clicked InvokeTactics'.fold_whd) ;
-   ignore(foldreduceb#connect#clicked InvokeTactics'.fold_reduce) ;
-   ignore(foldsimplb#connect#clicked InvokeTactics'.fold_simpl) ;
-   ignore(cutb#connect#clicked InvokeTactics'.cut) ;
-   ignore(changeb#connect#clicked InvokeTactics'.change) ;
-   ignore(letinb#connect#clicked InvokeTactics'.letin) ;
-   ignore(ringb#connect#clicked InvokeTactics'.ring) ;
-   ignore(fourierb#connect#clicked InvokeTactics'.fourier) ;
-   ignore(rewritesimplb#connect#clicked InvokeTactics'.rewritesimpl) ;
-   ignore(rewritebacksimplb#connect#clicked InvokeTactics'.rewritebacksimpl) ;
-   ignore(replaceb#connect#clicked InvokeTactics'.replace) ;
-   ignore(reflexivityb#connect#clicked InvokeTactics'.reflexivity) ;
-   ignore(symmetryb#connect#clicked InvokeTactics'.symmetry) ;
-   ignore(transitivityb#connect#clicked InvokeTactics'.transitivity) ;
-   ignore(existsb#connect#clicked InvokeTactics'.exists) ;
-   ignore(splitb#connect#clicked InvokeTactics'.split) ;
-   ignore(leftb#connect#clicked InvokeTactics'.left) ;
-   ignore(rightb#connect#clicked InvokeTactics'.right) ;
-   ignore(assumptionb#connect#clicked InvokeTactics'.assumption) ;
-   ignore(absurdb#connect#clicked InvokeTactics'.absurd) ;
-   ignore(contradictionb#connect#clicked InvokeTactics'.contradiction) ;
-   ignore(introsb#connect#clicked InvokeTactics'.intros) ;
-   ignore(decomposeb#connect#clicked InvokeTactics'.decompose) ;
-   ignore(searchpatternb#connect#clicked searchPattern) ;
-   ignore(injectionb#connect#clicked InvokeTactics'.injection) ;
-   ignore(discriminateb#connect#clicked InvokeTactics'.discriminate) ;
-(* Zack: spostare in una toolbar
-   ignore(whdb#connect#clicked whd) ;
-   ignore(reduceb#connect#clicked reduce) ;
-   ignore(simplb#connect#clicked simpl) ;
-   ignore(clearbodyb#connect#clicked clearbody) ;
-   ignore(clearb#connect#clicked clear) ;
-   ignore(generalizeb#connect#clicked generalize) ;
-*)
-   ignore(proofw#connect#selection_changed (choose_selection proofw)) ;
-   ignore
-     ((new GObj.event_ops proofw#as_widget)#connect#button_press
-        (open_contextual_menu_for_selected_terms proofw)) ;
-  ))
-end
-;;
-
-class empty_page =
- let vbox1 = GPack.vbox () in
- let scrolled_window1 =
-  GBin.scrolled_window ~border_width:10
-   ~packing:(vbox1#pack ~expand:true ~padding:5) () in
- let proofw =
-  TermViewer.sequent_viewer ~width:400 ~height:275
-   ~packing:(scrolled_window1#add) () in
-object(self)
- method proofw = (assert false : TermViewer.sequent_viewer)
- method content = vbox1
- method compute = (assert false : unit)
-end
-;;
-
-let empty_page = new empty_page;;
-
-class notebook =
-object(self)
- val notebook = GPack.notebook ()
- val pages = ref []
- val mutable skip_switch_page_event = false 
- val mutable empty = true
- method notebook = notebook
- method add_page n =
-  let new_page = new page () in
-   empty <- false ;
-   pages := !pages @ [n,lazy (setgoal n),new_page] ;
-   notebook#append_page
-    ~tab_label:((GMisc.label ~text:("?" ^ string_of_int n) ())#coerce)
-    new_page#content#coerce
- method remove_all_pages ~skip_switch_page_event:skip =
-  if empty then
-   notebook#remove_page 0 (* let's remove the empty page *)
-  else
-   List.iter (function _ -> notebook#remove_page 0) !pages ;
-  pages := [] ;
-  skip_switch_page_event <- skip
- method set_current_page ~may_skip_switch_page_event n =
-  let (_,_,page) = List.find (function (m,_,_) -> m=n) !pages in
-   let new_page = notebook#page_num page#content#coerce in
-    if may_skip_switch_page_event && new_page <> notebook#current_page then
-     skip_switch_page_event <- true ;
-    notebook#goto_page new_page
- method set_empty_page =
-  empty <- true ;
-  pages := [] ;
-  notebook#append_page
-   ~tab_label:((GMisc.label ~text:"No proof in progress" ())#coerce)
-   empty_page#content#coerce
- method proofw =
-  let (_,_,page) = List.nth !pages notebook#current_page in
-   page#proofw
- initializer
-  ignore
-   (notebook#connect#switch_page
-    (function i ->
-      let skip = skip_switch_page_event in
-       skip_switch_page_event <- false ;
-       if not skip then
-        try
-         let (metano,setgoal,page) = List.nth !pages i in
-          ProofEngine.goal := Some metano ;
-          Lazy.force (page#compute) ;
-          Lazy.force setgoal
-        with _ -> ()
-    ))
-end
-;;
-
-(* Main window *)
-
-class rendering_window output (notebook : notebook) =
- let scratch_window = new scratch_window in
- let window =
-  GWindow.window
-   ~title:"gTopLevel - Helm's Proof Assistant"
-   ~border_width:0 ~allow_shrink:false () in
- let vbox_for_menu = GPack.vbox ~packing:window#add () in
- (* menus *)
- let handle_box = GBin.handle_box ~border_width:2
-  ~packing:(vbox_for_menu#pack ~padding:0) () in
- let menubar = GMenu.menu_bar ~packing:handle_box#add () in
- let factory0 = new GMenu.factory menubar in
- let accel_group = factory0#accel_group in
- (* file menu *)
- let file_menu = factory0#add_submenu "File" in
- let factory1 = new GMenu.factory file_menu ~accel_group in
- let export_to_postscript_menu_item =
-  begin
-   let _ =
-    factory1#add_item "New Block of (Co)Inductive Definitions..."
-     ~key:GdkKeysyms._B ~callback:new_inductive
-   in
-   let _ =
-    factory1#add_item "New Proof or Definition..." ~key:GdkKeysyms._N
-     ~callback:new_proof
-   in
-   let reopen_menu_item =
-    factory1#add_item "Reopen a Finished Proof..." ~key:GdkKeysyms._R
-     ~callback:open_
-   in
-   let qed_menu_item =
-    factory1#add_item "Qed" ~key:GdkKeysyms._E ~callback:qed in
-   ignore (factory1#add_separator ()) ;
-   ignore
-    (factory1#add_item "Load Unfinished Proof..." ~key:GdkKeysyms._L
-      ~callback:load_unfinished_proof) ;
-   let save_menu_item =
-    factory1#add_item "Save Unfinished Proof" ~key:GdkKeysyms._S
-      ~callback:save_unfinished_proof
-   in
-   ignore
-    (save_set_sensitive := function b -> save_menu_item#misc#set_sensitive b);
-   ignore (!save_set_sensitive false);
-   ignore (qed_set_sensitive:=function b -> qed_menu_item#misc#set_sensitive b);
-   ignore (!qed_set_sensitive false);
-   ignore (factory1#add_separator ()) ;
-   let export_to_postscript_menu_item =
-    factory1#add_item "Export to PostScript..."
-     ~callback:(export_to_postscript output) in
-   ignore (factory1#add_separator ()) ;
-   ignore
-    (factory1#add_item "Exit" ~key:GdkKeysyms._Q ~callback:GMain.Main.quit) ;
-   export_to_postscript_menu_item
-  end in
- (* edit menu *)
- let edit_menu = factory0#add_submenu "Edit Current Proof" in
- let factory2 = new GMenu.factory edit_menu ~accel_group in
- let focus_and_proveit_set_sensitive = ref (function _ -> assert false) in
- let proveit_menu_item =
-  factory2#add_item "Prove It" ~key:GdkKeysyms._I
-   ~callback:(function () -> proveit ();!focus_and_proveit_set_sensitive false)
- in
- let focus_menu_item =
-  factory2#add_item "Focus" ~key:GdkKeysyms._F
-   ~callback:(function () -> focus () ; !focus_and_proveit_set_sensitive false)
- in
- let _ =
-  focus_and_proveit_set_sensitive :=
-   function b ->
-    proveit_menu_item#misc#set_sensitive b ;
-    focus_menu_item#misc#set_sensitive b
- in
- let _ = !focus_and_proveit_set_sensitive false in
- (* edit term menu *)
- let edit_term_menu = factory0#add_submenu "Edit Term" in
- let factory5 = new GMenu.factory edit_term_menu ~accel_group in
- let check_menu_item =
-  factory5#add_item "Check Term" ~key:GdkKeysyms._C
-   ~callback:(check scratch_window) in
- let _ = check_menu_item#misc#set_sensitive false in
- (* search menu *)
- let search_menu = factory0#add_submenu "Search" in
- let factory4 = new GMenu.factory search_menu ~accel_group in
- let _ =
-  factory4#add_item "Locate..." ~key:GdkKeysyms._T
-   ~callback:locate in
- let searchPattern_menu_item =
-  factory4#add_item "SearchPattern..." ~key:GdkKeysyms._D
-   ~callback:completeSearchPattern in
- let _ = searchPattern_menu_item#misc#set_sensitive false in
- let show_menu_item =
-  factory4#add_item "Show..." ~key:GdkKeysyms._H ~callback:show
- in
- let insert_query_item =
-  factory4#add_item "Insert Query (Experts Only)..." ~key:GdkKeysyms._Y
-   ~callback:insertQuery in
- (* hbugs menu *)
- let hbugs_menu = factory0#add_submenu "HBugs" in
- let factory6 = new GMenu.factory hbugs_menu ~accel_group in
- let toggle_hbugs_menu_item =
-  factory6#add_check_item
-    ~active:false ~key:GdkKeysyms._F5 ~callback:Hbugs.toggle "HBugs enabled"
- in
- (* settings menu *)
- let settings_menu = factory0#add_submenu "Settings" in
- let factory3 = new GMenu.factory settings_menu ~accel_group in
- let _ =
-  factory3#add_item "Edit Aliases..." ~key:GdkKeysyms._A
-   ~callback:edit_aliases in
- let _ = factory3#add_separator () in
- let _ =
-  factory3#add_item "MathML Widget Preferences..." ~key:GdkKeysyms._P
-   ~callback:(function _ -> (settings_window ())#show ()) in
- let _ = factory3#add_separator () in
- let _ =
-  factory3#add_item "Reload Stylesheets"
-   ~callback:
-     (function _ ->
-       ApplyStylesheets.reload_stylesheets () ;
-       if !ProofEngine.proof <> None then
-        try
-         refresh_goals notebook ;
-         refresh_proof output
-        with
-           InvokeTactics.RefreshSequentException e ->
-            output_html (outputhtml ())
-             ("
An error occurred while refreshing the " ^
-               "sequent: " ^ Printexc.to_string e ^ "
") ;
-           (*notebook#remove_all_pages ~skip_switch_page_event:false ;*)
-           notebook#set_empty_page
-         | InvokeTactics.RefreshProofException e ->
-            output_html (outputhtml ())
-             ("
An error occurred while refreshing the proof: "               ^ Printexc.to_string e ^ "
") ;
-            output#unload
-     ) in
- (* accel group *)
- let _ = window#add_accel_group accel_group in
- (* end of menus *)
- let hbox0 =
-  GPack.hbox
-   ~packing:(vbox_for_menu#pack ~expand:true ~fill:true ~padding:5) () in
- let vbox =
-  GPack.vbox ~packing:(hbox0#pack ~expand:true ~fill:true ~padding:5) () in
- let scrolled_window0 =
-  GBin.scrolled_window ~border_width:10
-   ~packing:(vbox#pack ~expand:true ~padding:5) () in
- let _ = scrolled_window0#add output#coerce in
- let frame =
-  GBin.frame ~label:"Insert Term"
-   ~packing:(vbox#pack ~expand:true ~fill:true ~padding:5) () in
- let scrolled_window1 =
-  GBin.scrolled_window ~border_width:5
-   ~packing:frame#add () in
- let inputt =
-  TexTermEditor'.term_editor
-   mqi_handle
-   ~width:400 ~height:100 ~packing:scrolled_window1#add ()
-   ~isnotempty_callback:
-    (function b ->
-      check_menu_item#misc#set_sensitive b ;
-      searchPattern_menu_item#misc#set_sensitive b) in
- let vboxl =
-  GPack.vbox ~packing:(hbox0#pack ~expand:true ~fill:true ~padding:5) () in
- let _ =
-  vboxl#pack ~expand:true ~fill:true ~padding:5 notebook#notebook#coerce in
- let frame =
-  GBin.frame ~shadow_type:`IN ~packing:(vboxl#pack ~expand:true ~padding:5) ()
- in
- let outputhtml =
-  GHtml.xmhtml
-   ~source:""
-   ~width:400 ~height: 100
-   ~border_width:20
-   ~packing:frame#add
-   ~show:true () in
-object
- method outputhtml = outputhtml
- method inputt = inputt
- method output = (output : TermViewer.proof_viewer)
- method scratch_window = scratch_window
- method notebook = notebook
- method show = window#show
- initializer
-  notebook#set_empty_page ;
-  export_to_postscript_menu_item#misc#set_sensitive false ;
-  check_term := (check_term_in_scratch scratch_window) ;
-
-  (* signal handlers here *)
-  ignore(output#connect#selection_changed
-   (function elem ->
-     choose_selection output elem ;
-     !focus_and_proveit_set_sensitive true
-   )) ;
-  ignore (output#connect#click (show_in_show_window_callback output)) ;
-  let settings_window = new settings_window output scrolled_window0
-   export_to_postscript_menu_item (choose_selection output) in
-  set_settings_window settings_window ;
-  set_outputhtml outputhtml ;
-  ignore(window#event#connect#delete (fun _ -> GMain.Main.quit () ; true )) ;
-  Logger.log_callback :=
-   (Logger.log_to_html ~print_and_flush:(output_html outputhtml))
-end;;
-
-(* MAIN *)
-
-let initialize_everything () =
- let module U = Unix in
-  let output = TermViewer.proof_viewer ~width:350 ~height:280 () in
-  let notebook = new notebook in
-   let rendering_window' = new rendering_window output notebook in
-    set_rendering_window rendering_window' ;
-    let print_error_as_html prefix msg =
-     output_html (outputhtml ())
-      ("
" ^ prefix ^ msg ^ "
")
-    in
-     Gdome_xslt.setErrorCallback (Some (print_error_as_html "XSLT Error: "));
-     Gdome_xslt.setDebugCallback
-      (Some (print_error_as_html "XSLT Debug Message: "));
-     rendering_window'#show () ;
-(*      Hbugs.toggle true; *)
-     GtkThread.main ()
-;;
-
-let main () =
- ignore (GtkMain.Main.init ()) ;
- initialize_everything () ;
- MQIC.close mqi_handle;
- Hbugs.quit ()
-;;
-
-try
-  Sys.catch_break true;
-  main ();
-with Sys.Break -> ()  (* exit nicely, invoking at_exit functions *)
-