Avoid duplicates in the list.

[helm.git] / matita / matita / matitaMathView.ml

diff --git a/matita/matita/matitaMathView.ml b/matita/matita/matitaMathView.ml
index 4b5a9fc1dd0ab4be0e710ce119b3c9898f898dec..2a17d938b9d74d0017776db845430ec5e1f5f73f 100644 (file)
--- a/matita/matita/matitaMathView.ml
+++ b/matita/matita/matitaMathView.ml
@@ -37,7 +37,7 @@ module Stack = Continuationals.Stack
 (** inherit from this class if you want to access current script *)
 class scriptAccessor =
 object (self)
-  method private script = MatitaScript.current ()
+  method private script = get_matita_script_current ()
 end
 
 let cicBrowsers = ref []
@@ -105,8 +105,7 @@ class sequentsViewer ~(notebook:GPack.notebook) ~(cicMathView:cicMathView) () =
       page2goal <- [];
       goal2page <- [];
       goal2win <- [];
-      _metasenv <- `Old []; 
-      self#script#setGoal None
+      _metasenv <- `Old []
 
     method nload_sequents : 'status. #GrafiteTypes.status as 'status -> unit
     = fun (status : #GrafiteTypes.status) ->
@@ -185,7 +184,6 @@ class sequentsViewer ~(notebook:GPack.notebook) ~(cicMathView:cicMathView) () =
           let goal_switch =
             try List.assoc page page2goal with Not_found -> assert false
           in
-          self#script#setGoal (Some (goal_of_switch goal_switch));
           self#render_page status ~page ~goal_switch))
 
     method private render_page:
@@ -292,7 +290,7 @@ class cicBrowser_impl ~(history:MatitaTypes.mathViewer_entry MatitaMisc.history)
       let module Pp = GraphvizPp.Dot in
       let filename, oc = Filename.open_temp_file "matita" ".dot" in
       let fmt = Format.formatter_of_out_channel oc in
-      let status = (MatitaScript.current ())#grafite_status in
+      let status = (get_matita_script_current ())#grafite_status in
       Pp.header 
         ~name:"Hints"
         ~graph_type:"graph"
@@ -315,7 +313,7 @@ class cicBrowser_impl ~(history:MatitaTypes.mathViewer_entry MatitaMisc.history)
         ~name:"Coercions"
         ~node_attrs:["fontsize", "9"; "width", ".4"; "height", ".4"]
         ~edge_attrs:["fontsize", "10"] fmt;
-      let status = (MatitaScript.current ())#grafite_status in
+      let status = (get_matita_script_current ())#grafite_status in
       NCicCoercion.generate_dot_file status fmt;
       Pp.trailer fmt;
       Pp.raw "@." fmt;
@@ -594,7 +592,7 @@ class cicBrowser_impl ~(history:MatitaTypes.mathViewer_entry MatitaMisc.history)
     method private _loadTermNCic term m s c =
       let d = 0 in
       let m = (0,([],c,term))::m in
-      let status = (MatitaScript.current ())#grafite_status in
+      let status = (get_matita_script_current ())#grafite_status in
       mathView#nload_sequent status m s d;
       self#_showMath
 
@@ -632,10 +630,6 @@ class cicBrowser_impl ~(history:MatitaTypes.mathViewer_entry MatitaMisc.history)
         self#_load entry;
         self#_historyAdd entry
 
-      (** {2 methods accessing underlying GtkMathView} *)
-
-    method updateFontSize = mathView#set_font_size (MatitaMisc.get_current_font_size ())
-
       (** {2 methods used by constructor only} *)
 
     method win = win
@@ -684,33 +678,34 @@ let default_cicMathView () =
 let cicMathView_instance =
  MatitaMisc.singleton default_cicMathView
 
-let default_sequentsViewer () =
-  let gui = MatitaMisc.get_gui () in
+let default_sequentsViewer notebook =
   let cicMathView = cicMathView_instance () in
-  sequentsViewer ~notebook:gui#main#sequentsNotebook ~cicMathView ()
-let sequentsViewer_instance = MatitaMisc.singleton default_sequentsViewer
-
-let mathViewer () = 
-  object(self)
-    method private get_browser reuse = 
-      if reuse then
-        (match !cicBrowsers with
-        | [] -> cicBrowser ()
-        | b :: _ -> (b :> MatitaGuiTypes.cicBrowser))
-      else
-        (cicBrowser ())
+  sequentsViewer ~notebook ~cicMathView ()
+let sequentsViewer_instance =
+ let already_used = ref false in
+  fun notebook ->
+   if !already_used then assert false
+   else
+    (already_used := true;
+     default_sequentsViewer notebook)
           
-    method show_entry ?(reuse=false) t = (self#get_browser reuse)#load t
-      
-  end
+(** @param reuse if set reused last opened cic browser otherwise 
+*  opens a new one. default is false *)
+let show_entry ?(reuse=false) t =
+ let browser =
+  if reuse then
+   (match !cicBrowsers with
+       [] -> cicBrowser ()
+     | b :: _ -> (b :> MatitaGuiTypes.cicBrowser))
+  else
+   cicBrowser ()
+ in
+  browser#load t
+;;
 
 let refresh_all_browsers () =
   List.iter (fun b -> b#refresh ~force:false ()) !cicBrowsers
 
-let update_font_sizes () =
-  List.iter (fun b -> b#updateFontSize) !cicBrowsers;
-  (cicMathView_instance ())#update_font_size
-
 let get_math_views () =
   (cicMathView_instance ()) :: (List.map (fun b -> b#mathView) !cicBrowsers)