[gnome-calculator] Close the popover after changing mode

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 0b9815a9241c87353940823dd7ee82761850a61a
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Apr 7 03:55:59 2014 +0200

    Close the popover after changing mode
    
    https://bugzilla.gnome.org/show_bug.cgi?id=724480

 src/math-window.vala |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/src/math-window.vala b/src/math-window.vala
index 8839bf3..9c15b41 100644
--- a/src/math-window.vala
+++ b/src/math-window.vala
@@ -21,6 +21,8 @@ public class MathWindow : Gtk.ApplicationWindow
     public MathButtons buttons { get { return _buttons; } }
     private bool right_aligned;
 
+    private Gtk.MenuButton menu_button;
+
     private Gtk.HeaderBar headerbar;
 
     private Gtk.Label mode_label;
@@ -67,7 +69,7 @@ public class MathWindow : Gtk.ApplicationWindow
         menu_box.pack_start (arrow);
         menu_box.show ();
 
-        var menu_button = new Gtk.MenuButton ();
+        menu_button = new Gtk.MenuButton ();
         menu_button.add (menu_box);
         menu_button.menu_model = (MenuModel) builder.get_object ("window-menu");
         menu_button.get_style_context ().add_class ("title");
@@ -221,6 +223,10 @@ public class MathWindow : Gtk.ApplicationWindow
         requires (parameter != null)
         requires (parameter.is_of_type (VariantType.STRING))
     {
+        var popover = menu_button.get_popover ();
+        popover.hide ();
+        menu_button.set_active (false);
+
         var mode = ButtonMode.BASIC;
         var mode_str = parameter.get_string (null);