severe bug found in parallel zeta

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

diff --git a/matita/matita/matitaMathView.ml b/matita/matita/matitaMathView.ml
index 455d037b9b4b6e1a625ff141e9d1c117da395ff7..ea9683e188bd6232c3e2996806541fed68a2d56a 100644 (file)
--- a/matita/matita/matitaMathView.ml
+++ b/matita/matita/matitaMathView.ml
@@ -107,20 +107,19 @@ class sequentsViewer ~(notebook:GPack.notebook) ~(cicMathView:cicMathView) () =
       let win goal_switch =
         let w =
           GBin.scrolled_window ~hpolicy:`AUTOMATIC ~vpolicy:`ALWAYS
-            ~shadow_type:`IN ~show:true ()
-        in
+            ~shadow_type:`IN ~show:true () in
         let reparent () =
           scrolledWin <- Some w;
-          match cicMathView#misc#parent with
-          | None -> w#add cicMathView#coerce
-          | Some parent ->
-             let parent =
-              match cicMathView#misc#parent with
-                 None -> assert false
-               | Some p -> GContainer.cast_container p
-             in
-              parent#remove cicMathView#coerce;
-              w#add cicMathView#coerce
+          (match cicMathView#misc#parent with
+            | None -> ()
+            | Some parent ->
+               let parent =
+                match cicMathView#misc#parent with
+                   None -> assert false
+                 | Some p -> GContainer.cast_container p
+               in
+                parent#remove cicMathView#coerce);
+          w#add cicMathView#coerce
         in
         goal2win <- (goal_switch, reparent) :: goal2win;
         w#coerce
@@ -191,7 +190,24 @@ class sequentsViewer ~(notebook:GPack.notebook) ~(cicMathView:cicMathView) () =
           cicMathView#load_root ~root);
       (try
         cicMathView#set_selection None;
-        List.assoc goal_switch goal2win ()
+        List.assoc goal_switch goal2win ();
+        (match cicMathView#misc#parent with
+           None -> assert false
+         | Some p ->
+            (* The text widget dinamycally inserts the text in a separate
+               thread. We need to wait for it to terminate before we can
+               move the scrollbar to the end *)
+            while Glib.Main.pending()do ignore(Glib.Main.iteration false); done;
+            let w =
+             new GBin.scrolled_window
+              (Gobject.try_cast p#as_widget "GtkScrolledWindow") in
+            (* The double change upper/lower is to trigger the emission of
+               changed :-( *)
+            w#hadjustment#set_value w#hadjustment#upper;
+            w#hadjustment#set_value w#hadjustment#lower;
+            w#vadjustment#set_value w#vadjustment#lower;
+            w#vadjustment#set_value
+             (w#vadjustment#upper -. w#vadjustment#page_size));
       with Not_found -> assert false)
 
     method goto_sequent: 'status. #ApplyTransformation.status as 'status -> int -> unit
@@ -205,7 +221,6 @@ class sequentsViewer ~(notebook:GPack.notebook) ~(cicMathView:cicMathView) () =
       in
       notebook#goto_page page;
       self#render_page status ~page ~goal_switch
-
   end
 
 let blank_uri = BuildTimeConf.blank_uri
@@ -318,7 +333,9 @@ class cicBrowser_impl ~(history:MatitaTypes.mathViewer_entry MatitaMisc.history)
       HExtlib.safe_remove filename
   in
   object (self)
-    val mutable gviz_uri = NReference.reference_of_string "cic:/dummy.dec";
+    val mutable gviz_uri =
+      let uri = NUri.uri_of_string "cic:/dummy/dec.con" in
+      NReference.reference_of_spec uri NReference.Decl;
 
     val dep_contextual_menu = GMenu.menu ()