+ method private forward () =
+ try
+ self#_load (self#_historyNext ())
+ with MatitaMisc.History_failure -> ()
+
+ (* loads a uri which can be a cic uri or an about:* uri
+ * @param uri string *)
+ method private _load entry =
+ try
+ if entry <> current_entry || entry = `About `Current_proof then begin
+ (match entry with
+ | `About `Current_proof -> self#home ()
+ | `About `Blank -> self#blank ()
+ | `About `Us -> () (* TODO implement easter egg here :-] *)
+ | `Check term -> self#_loadCheck term
+ | `Cic (term, metasenv) -> self#_loadTermCic term metasenv
+ | `Dir dir -> self#_loadDir dir
+ | `Uri uri -> self#_loadUriManagerUri (UriManager.uri_of_string uri)
+ | `Whelp (query, results) ->
+ set_whelp_query query;
+ self#_loadList (List.map (fun r -> "obj", r) results));
+ self#setEntry entry
+ end
+ with
+ | UriManager.IllFormedUri uri -> fail (sprintf "invalid uri: %s" uri)
+ | CicEnvironment.Object_not_found uri ->
+ fail (sprintf "object not found: %s" (UriManager.string_of_uri uri))
+ | Browser_failure msg -> fail msg
+
+ method private blank () =
+ self#_showMath;
+ mathView#load_root (MatitaMisc.empty_mathml ())#get_documentElement
+
+ method private _loadCheck term =
+ failwith "not implemented _loadCheck";
+ self#_showMath
+
+ method private home () =
+ self#_showMath;
+ match self#script#status.proof_status with
+ | Proof (uri, metasenv, bo, ty) ->
+ let name = UriManager.name_of_uri (MatitaMisc.unopt uri) in
+ let obj = Cic.CurrentProof (name, metasenv, bo, ty, [], []) in
+ self#_loadObj obj
+ | Incomplete_proof ((uri, metasenv, bo, ty), _) ->
+ let name = UriManager.name_of_uri (MatitaMisc.unopt uri) in
+ let obj = Cic.CurrentProof (name, metasenv, bo, ty, [], []) in
+ self#_loadObj obj
+ | _ -> self#blank ()
+
+ (** loads a cic uri from the environment
+ * @param uri UriManager.uri *)
+ method private _loadUriManagerUri uri =
+ let uri = UriManager.strip_xpointer uri in
+ let (obj, _) = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
+ self#_loadObj obj
+
+ method private _loadDir dir =
+ let content = Http_getter.ls dir in
+ let l =
+ List.map
+ (function
+ | Http_getter_types.Ls_section s -> "dir", s
+ | Http_getter_types.Ls_object o -> "obj", o.Http_getter_types.uri)
+ content
+ in
+ if l = [] then raise (Browser_failure "no such directory");
+ self#_loadList l
+
+ method private setEntry entry =
+ win#browserUri#entry#set_text (string_of_entry entry);
+ current_entry <- entry
+
+ method private _loadObj obj =
+ self#_showMath;
+ (* this must be _before_ loading the document, since
+ * if the widget is not mapped (hidden by the notebook)
+ * the document is not rendered *)
+ let use_diff = false in (* ZACK TODO use XmlDiff when re-rendering? *)
+ let (mathml, (_,(ids_to_terms, ids_to_father_ids, ids_to_conjectures,
+ ids_to_hypotheses,_,_))) =
+ ApplyTransformation.mml_of_cic_object obj
+ in
+ current_infos <- Some (ids_to_terms, ids_to_father_ids,
+ ids_to_conjectures, ids_to_hypotheses);
+ (match current_mathml with
+ | Some current_mathml when use_diff ->
+ mathView#freeze;
+ XmlDiff.update_dom ~from:current_mathml mathml;
+ mathView#thaw
+ | _ ->
+ mathView#load_root ~root:mathml#get_documentElement;
+ current_mathml <- Some mathml);
+
+ method private _loadTermCic term metasenv =
+ let context = self#script#proofContext in
+ let dummyno = CicMkImplicit.new_meta metasenv [] in
+ let sequent = (dummyno, context, term) in
+ mathView#load_sequent (sequent :: metasenv) dummyno;
+ self#_showMath
+
+ method private _loadList l =
+ model#list_store#clear ();
+ List.iter (fun (tag, s) -> model#easy_append ~tag s) l;
+ self#_showList
+
+ (** { public methods, all must call _load!! } *)
+
+ method load entry =
+ handle_error (fun () -> self#_load entry; self#_historyAdd entry)
+
+ (** this is what the browser does when you enter a string an hit enter *)
+ method loadInput txt =
+ let txt = strip_blanks txt in
+ let fix_uri txt =
+ UriManager.string_of_uri
+ (UriManager.strip_xpointer (UriManager.uri_of_string txt))
+ in
+ if is_whelp txt then begin
+ set_whelp_query txt;
+ (MatitaScript.instance ())#advance ~statement:(txt ^ ".") ()
+ end else begin
+ let entry =
+ match txt with
+ | txt when is_uri txt -> `Uri (fix_uri txt)
+ | txt when is_dir txt -> `Dir (add_trailing_slash txt)
+ | txt ->
+ (try
+ entry_of_string txt
+ with Invalid_argument _ ->
+ raise (Browser_failure (sprintf "unsupported uri: %s" txt)))
+ in
+ self#_load entry;
+ self#_historyAdd entry
+ end
+
+ (** {2 methods used by constructor only} *)
+
+ method win = win
+ method history = history
+ method currentEntry = current_entry
+ method refresh () =
+ if current_entry = `About `Current_proof then
+ self#_load (`About `Current_proof)