+(** inherit from this class if you want to access current script *)
+class scriptAccessor =
+object (self)
+ method private script = MatitaScript.current ()
+end
+
+let cicBrowsers = ref []
+let gui_instance = ref None
+let set_gui gui = gui_instance := Some gui
+let get_gui () =
+ match !gui_instance with
+ | None -> assert false
+ | Some gui -> gui
+
+let default_font_size () =
+ Helm_registry.get_opt_default Helm_registry.int
+ ~default:BuildTimeConf.default_font_size "matita.font_size"
+let current_font_size = ref ~-1
+let increase_font_size () = incr current_font_size
+let decrease_font_size () = decr current_font_size
+let reset_font_size () = current_font_size := default_font_size ()
+
+ (* is there any lablgtk2 constant corresponding to the various mouse
+ * buttons??? *)
+let left_button = 1
+let middle_button = 2
+let right_button = 3
+
+let near (x1, y1) (x2, y2) =
+ let distance = sqrt (((x2 -. x1) ** 2.) +. ((y2 -. y1) ** 2.)) in
+ (distance < 4.)
+
+let xlink_ns = Gdome.domString "http://www.w3.org/1999/xlink"
+let helm_ns = Gdome.domString "http://www.cs.unibo.it/helm"
+let href_ds = Gdome.domString "href"
+let xref_ds = Gdome.domString "xref"
+
+let domImpl = Gdome.domImplementation ()
+
+ (** Gdome.element of a MathML document whose rendering should be blank. Used
+ * by cicBrowser to render "about:blank" document *)
+let empty_mathml = lazy (
+ domImpl#createDocument ~namespaceURI:(Some DomMisc.mathml_ns)
+ ~qualifiedName:(Gdome.domString "math") ~doctype:None)
+
+let empty_boxml = lazy (
+ domImpl#createDocument ~namespaceURI:(Some DomMisc.boxml_ns)
+ ~qualifiedName:(Gdome.domString "box") ~doctype:None)
+
+ (** shown for goals closed by side effects *)
+let closed_goal_mathml = lazy (
+ domImpl#createDocumentFromURI ~uri:BuildTimeConf.closed_xml ())
+
+(* ids_to_terms should not be passed here, is just for debugging *)
+let find_root_id annobj id ids_to_father_ids ids_to_terms ids_to_inner_types =
+ let find_parent id ids =
+ let rec aux id =
+(* (prerr_endline (sprintf "id %s = %s" id
+ (try
+ CicPp.ppterm (Hashtbl.find ids_to_terms id)
+ with Not_found -> "NONE"))); *)
+ if List.mem id ids then Some id
+ else
+ (match
+ (try Hashtbl.find ids_to_father_ids id with Not_found -> None)
+ with
+ | None -> None
+ | Some id' -> aux id')
+ in
+ aux id
+ in
+ let return_father id ids =
+ match find_parent id ids with
+ | None -> assert false
+ | Some parent_id -> parent_id
+ in
+ let mk_ids terms = List.map CicUtil.id_of_annterm terms in
+ let inner_types =
+ Hashtbl.fold
+ (fun _ types acc ->
+ match types.Cic2acic.annexpected with
+ None -> types.Cic2acic.annsynthesized :: acc
+ | Some ty -> ty :: types.Cic2acic.annsynthesized :: acc
+ ) ids_to_inner_types [] in
+ match annobj with
+ | Cic.AConstant (_, _, _, Some bo, ty, _, _)
+ | Cic.AVariable (_, _, Some bo, ty, _, _)
+ | Cic.ACurrentProof (_, _, _, _, bo, ty, _, _) ->
+ return_father id (mk_ids (ty :: bo :: inner_types))
+ | Cic.AConstant (_, _, _, None, ty, _, _)
+ | Cic.AVariable (_, _, None, ty, _, _) ->
+ return_father id (mk_ids (ty::inner_types))
+ | Cic.AInductiveDefinition _ ->
+ assert false (* TODO *)
+
+ (** @return string content of a dom node having a single text child node, e.g.
+ * <m:mi xlink:href="...">bool</m:mi> *)
+let string_of_dom_node node =
+ match node#get_firstChild with
+ | None -> ""
+ | Some node ->
+ (try
+ let text = new Gdome.text_of_node node in
+ text#get_data#to_string
+ with GdomeInit.DOMCastException _ -> "")
+
+let name_of_hypothesis = function
+ | Some (Cic.Name s, _) -> s
+ | _ -> assert false
+
+let id_of_node (node: Gdome.element) =
+ let xref_attr =
+ node#getAttributeNS ~namespaceURI:helm_ns ~localName:xref_ds in
+ try
+ List.hd (HExtlib.split ~sep:' ' xref_attr#to_string)
+ with Failure _ -> assert false
+
+type selected_term =
+ | SelTerm of Cic.term * string option (* term, parent hypothesis (if any) *)
+ | SelHyp of string * Cic.context (* hypothesis, context *)
+
+class clickableMathView obj =
+let text_width = 80 in
+let dummy_loc = DisambiguateTypes.dummy_floc in
+object (self)
+ inherit GMathViewAux.multi_selection_math_view obj
+
+ val mutable href_callback: (string -> unit) option = None
+ method set_href_callback f = href_callback <- f
+
+ val mutable _cic_info = None
+ method private set_cic_info info = _cic_info <- info
+ method private cic_info = _cic_info
+
+ initializer
+ self#set_font_size !current_font_size;
+ ignore (self#connect#selection_changed self#choose_selection_cb);
+ ignore (self#event#connect#button_press self#button_press_cb);
+ ignore (self#event#connect#button_release self#button_release_cb);
+ ignore (self#event#connect#selection_clear self#selection_clear_cb);
+ ignore (self#coerce#misc#connect#selection_get self#selection_get_cb)
+
+ val mutable button_press_x = -1.
+ val mutable button_press_y = -1.
+ val mutable selection_changed = false
+
+ method private selection_get_cb ctxt ~info ~time =
+ let text =
+ match ctxt#target with
+ | "PATTERN" -> self#text_of_selection `Pattern
+ | "TERM" | _ -> self#text_of_selection `Term
+ in
+ match text with
+ | None -> ()
+ | Some s -> ctxt#return s
+
+ method private text_of_selection fmt =
+ match self#get_selections with
+ | [] -> None
+ | node :: _ -> Some (self#string_of_node ~paste_kind:fmt node)
+
+ method private selection_clear_cb sel_event =
+ self#remove_selections;
+ (GData.clipboard Gdk.Atom.clipboard)#clear ();
+ false
+
+ method private button_press_cb gdk_button =
+ let button = GdkEvent.Button.button gdk_button in
+ if button = left_button then begin
+ button_press_x <- GdkEvent.Button.x gdk_button;
+ button_press_y <- GdkEvent.Button.y gdk_button;
+ selection_changed <- false
+ end else if button = right_button then
+ self#popup_contextual_menu (GdkEvent.Button.time gdk_button);
+ false
+
+ (** @return a pattern structure which contains pretty printed terms *)
+ method private tactic_text_pattern_of_selection =
+ match self#get_selections with
+ | [] -> assert false (* this method is invoked only if there's a sel. *)
+ | node :: _ ->
+ let id = id_of_node node in
+ let cic_info, unsh_sequent = self#get_cic_info id in
+ match self#get_term_by_id cic_info id with
+ | SelTerm (t, father_hyp) ->
+ let sequent = self#sequent_of_id ~paste_kind:`Pattern id in
+ let text = self#string_of_cic_sequent sequent in
+ (match father_hyp with
+ | None -> None, [], Some text
+ | Some hyp_name -> None, [ hyp_name, text ], None)
+ | SelHyp (hyp_name, _ctxt) -> None, [ hyp_name, "%" ], None
+
+ method private popup_contextual_menu time =
+ let menu = GMenu.menu () in
+ let add_menu_item ?(menu = menu) ?stock ?label () =
+ GMenu.image_menu_item ?stock ?label ~packing:menu#append () in
+ let check = add_menu_item ~label:"Check" () in
+ let reductions_menu_item = GMenu.menu_item ~label:"βδιζ-reduce" () in
+ menu#append reductions_menu_item;
+ let reductions = GMenu.menu () in
+ reductions_menu_item#set_submenu reductions;
+ let normalize = add_menu_item ~menu:reductions ~label:"Normalize" () in
+ let reduce = add_menu_item ~menu:reductions ~label:"Reduce" () in
+ let simplify = add_menu_item ~menu:reductions ~label:"Simplify" () in
+ let whd = add_menu_item ~menu:reductions ~label:"Weak head" () in
+ menu#append (GMenu.separator_item ());
+ let copy = add_menu_item ~stock:`COPY () in
+ let gui = get_gui () in
+ List.iter (fun item -> item#misc#set_sensitive gui#canCopy)
+ [ copy; check; normalize; reduce; simplify; whd ];
+ let reduction_action kind () =
+ let pat = self#tactic_text_pattern_of_selection in
+ let statement =
+ let loc = DisambiguateTypes.dummy_floc in
+ "\n" ^
+ GrafiteAstPp.pp_executable ~term_pp:(fun s -> s)
+ ~lazy_term_pp:(fun _ -> assert false) ~obj_pp:(fun _ -> assert false)
+ (GrafiteAst.Tactical (loc,
+ GrafiteAst.Tactic (loc, GrafiteAst.Reduce (loc, kind, pat)),
+ Some (GrafiteAst.Semicolon loc))) in
+ (MatitaScript.current ())#advance ~statement () in
+ connect_menu_item copy gui#copy;
+ connect_menu_item normalize (reduction_action `Normalize);
+ connect_menu_item reduce (reduction_action `Reduce);
+ connect_menu_item simplify (reduction_action `Simpl);
+ connect_menu_item whd (reduction_action `Whd);
+ menu#popup ~button:right_button ~time
+
+ method private button_release_cb gdk_button =
+ if GdkEvent.Button.button gdk_button = left_button then begin
+ let button_release_x = GdkEvent.Button.x gdk_button in
+ let button_release_y = GdkEvent.Button.y gdk_button in
+ if selection_changed then
+ ()
+ else (* selection _not_ changed *)
+ if near (button_press_x, button_press_y)
+ (button_release_x, button_release_y)
+ then
+ let x = int_of_float button_press_x in
+ let y = int_of_float button_press_y in
+ (match self#get_element_at x y with
+ | None -> ()
+ | Some elt ->
+ let localName = href_ds in
+ if elt#hasAttributeNS ~namespaceURI:xlink_ns ~localName then
+ self#invoke_href_callback
+ (elt#getAttributeNS ~namespaceURI:xlink_ns
+ ~localName)#to_string
+ gdk_button
+ else
+ ignore (self#action_toggle elt));
+ end;
+ false
+
+ method private invoke_href_callback href_value gdk_button =
+ let button = GdkEvent.Button.button gdk_button in
+ if button = left_button then
+ let time = GdkEvent.Button.time gdk_button in
+ match href_callback with
+ | None -> ()
+ | Some f ->
+ (match HExtlib.split href_value with
+ | [ uri ] -> f uri
+ | uris ->
+ let menu = GMenu.menu () in
+ List.iter
+ (fun uri ->
+ let menu_item =
+ GMenu.menu_item ~label:uri ~packing:menu#append () in
+ connect_menu_item menu_item (fun () -> f uri))
+ uris;
+ menu#popup ~button ~time)
+
+ method private choose_selection_cb gdome_elt =
+ let set_selection elt =
+ let misc = self#coerce#misc in
+ self#set_selection (Some elt);
+ misc#add_selection_target ~target:"STRING" Gdk.Atom.primary;
+ ignore (misc#grab_selection Gdk.Atom.primary);
+ in
+ let rec aux elt =
+ if (elt#getAttributeNS ~namespaceURI:helm_ns
+ ~localName:xref_ds)#to_string <> ""
+ then
+ set_selection elt
+ else
+ try
+ (match elt#get_parentNode with
+ | None -> assert false
+ | Some p -> aux (new Gdome.element_of_node p))
+ with GdomeInit.DOMCastException _ -> ()
+ in
+ (match gdome_elt with
+ | Some elt when (elt#getAttributeNS ~namespaceURI:xlink_ns
+ ~localName:href_ds)#to_string <> "" ->
+ set_selection elt
+ | Some elt -> aux elt
+ | None -> self#set_selection None);
+ selection_changed <- true
+
+ method update_font_size = self#set_font_size !current_font_size
+
+ (** find a term by id from stored CIC infos @return either `Hyp if the id
+ * correspond to an hypothesis or `Term (cic, hyp) if the id correspond to a
+ * term. In the latter case hyp is either None (if the term is a subterm of
+ * the sequent conclusion) or Some hyp_name if the term belongs to an
+ * hypothesis *)
+ method private get_term_by_id cic_info id =
+ let unsh_item, ids_to_terms, ids_to_hypotheses, ids_to_father_ids, _, _ =
+ cic_info in
+ let rec find_father_hyp id =
+ if Hashtbl.mem ids_to_hypotheses id
+ then Some (name_of_hypothesis (Hashtbl.find ids_to_hypotheses id))
+ else
+ let father_id =
+ try Hashtbl.find ids_to_father_ids id
+ with Not_found -> assert false in
+ match father_id with
+ | Some id -> find_father_hyp id
+ | None -> None
+ in
+ try
+ let term = Hashtbl.find ids_to_terms id in
+ let father_hyp = find_father_hyp id in
+ SelTerm (term, father_hyp)
+ with Not_found ->