X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2FmatitaGui.ml;h=94e3e751db0f046b2f27cf01f36ca761b8fb202e;hb=d9a1ff8259a7882caa0ffd27282838c00a34cab5;hp=d009a63f6f43646846a782265bb276743325e708;hpb=ddc80515997a3f56085c6234d4db326141e189aa;p=helm.git

diff --git a/matita/matita/matitaGui.ml b/matita/matita/matitaGui.ml
index d009a63f6..94e3e751d 100644
--- a/matita/matita/matitaGui.ml
+++ b/matita/matita/matitaGui.ml
@@ -419,7 +419,7 @@ class gui () =
     val mutable chosen_file = None
     val mutable _ok_not_exists = false
     val mutable _only_directory = false
-    val mutable current_page = 0
+    val mutable current_page = -1
       
     initializer
       let s () = MatitaScript.current () in
@@ -774,7 +774,7 @@ class gui () =
       main#unicodeAsTexMenuItem#set_active
         (Helm_registry.get_bool "matita.paste_unicode_as_tex");
         (* log *)
-      HLog.set_log_callback self#console#log_callback;
+      HLog.set_log_callback (fun tag msg -> GtkThread.async (self#console#log_callback tag) msg);
       GtkSignal.user_handler :=
         (function 
         | MatitaScript.ActionCancelled s -> HLog.error s
@@ -870,14 +870,12 @@ class gui () =
         MatitaMisc.decrease_font_size;
       connect_menu_item main#normalFontSizeMenuItem
         MatitaMisc.reset_font_size;
-      ignore (main#scriptNotebook#connect#switch_page
-       (fun page ->
-         let old_script = MatitaScript.at_page current_page in
-         save_moo0 ~do_clean:false old_script old_script#status;
-         current_page <- page;
-         let script = MatitaScript.at_page page in
-          script#activate;
-          main#saveMenuItem#misc#set_sensitive script#has_name))
+      ignore (main#scriptNotebook#connect#switch_page (fun page ->
+        self#save_page ();
+        current_page <- page;
+        let script = MatitaScript.at_page page in
+        script#activate;
+        main#saveMenuItem#misc#set_sensitive script#has_name))
 
     method private externalEditor () =
      let script = MatitaScript.current () in
@@ -979,7 +977,13 @@ class gui () =
      let script = MatitaScript.at_page page in 
       self#closeScript page script
 
+    method private save_page () =
+      if current_page >= 0 then
+        let old_script = MatitaScript.at_page current_page in
+        save_moo0 ~do_clean:false old_script old_script#status
+
     method newScript () = 
+       self#save_page ();
        let scrolledWindow = GBin.scrolled_window () in
        let hbox = GPack.hbox () in
        let tab_label = GMisc.label ~text:"foo" ~packing:hbox#pack () in