* grub-core/gfxmenu/gui_list.c: Refresh first_shown_entry value when

cached view is reused.
	* grub-core/gfxmenu/view.c: Call the refresh procedure for all
	open boot menus.

ChangeLog

@@ -1,3 +1,10 @@
+2013-04-29 Vladimir Testov <vladimir.testov@rosalab.ru>
+
+	* grub-core/gfxmenu/gui_list.c: Refresh first_shown_entry value when
+	cached view is reused.
+	* grub-core/gfxmenu/view.c: Call the refresh procedure for all
+	open boot menus.
+
 2013-04-29  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	Unify more code in grub-install_header.

grub-core/gfxmenu/gui_list.c

@@ -541,6 +541,16 @@ list_set_view_info (void *vself,
   self->view = view;
 }
 
+/* Refresh list variables */
+static void
+list_refresh_info (void *vself,
+                   grub_gfxmenu_view_t view)
+{
+  list_impl_t self = vself;
+  if (view->nested)
+    self->first_shown_index = 0;
+}
+
 static struct grub_gui_component_ops list_comp_ops =
   {
     .destroy = list_destroy,
@@ -557,7 +567,8 @@ static struct grub_gui_component_ops list_comp_ops =
 
 static struct grub_gui_list_ops list_ops =
 {
-  .set_view_info = list_set_view_info
+  .set_view_info = list_set_view_info,
+  .refresh_list = list_refresh_info
 };
 
 grub_gui_component_t

grub-core/gfxmenu/view.c

@@ -236,6 +236,27 @@ update_menu_components (grub_gfxmenu_view_t view)
                                 update_menu_visit, view);
 }
 
+static void
+refresh_menu_visit (grub_gui_component_t component,
+              void *userdata)
+{
+  grub_gfxmenu_view_t view;
+  view = userdata;
+  if (component->ops->is_instance (component, "list"))
+    {
+      grub_gui_list_t list = (grub_gui_list_t) component;
+      list->ops->refresh_list (list, view);
+    }
+}
+
+/* Refresh list information (useful for submenus) */
+static void
+refresh_menu_components (grub_gfxmenu_view_t view)
+{
+  grub_gui_iterate_recursively ((grub_gui_component_t) view->canvas,
+                                refresh_menu_visit, view);
+}
+
 static void
 draw_message (grub_gfxmenu_view_t view)
 {
@@ -294,6 +315,7 @@ grub_gfxmenu_view_draw (grub_gfxmenu_view_t view)
 			  view->screen.x, view->screen.y,
 			  view->screen.width, view->screen.height);
 
+  refresh_menu_components (view);
   update_menu_components (view);
 
   grub_gfxmenu_view_redraw (view, &view->screen);

include/grub/gui.h

@@ -67,6 +67,8 @@ struct grub_gui_list_ops
 {
   void (*set_view_info) (void *self,
                          grub_gfxmenu_view_t view);
+  void (*refresh_list) (void *self,
+                        grub_gfxmenu_view_t view);
 };
 
 struct grub_gui_progress_ops