[chronojump] chronopicRegister can be closed with Escape key

[Xavier de Blas <xaviblas src gnome org>]

commit 587ddc1e6b227e5540bef4b52034ff1034a3cdcf
Author: Xavier de Blas <xaviblas gmail com>
Date:   Tue Oct 11 00:54:33 2016 +0200

    chronopicRegister can be closed with Escape key

 src/gui/chronopicRegister.cs |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/src/gui/chronopicRegister.cs b/src/gui/chronopicRegister.cs
index 5335ab6..d75f0c1 100644
--- a/src/gui/chronopicRegister.cs
+++ b/src/gui/chronopicRegister.cs
@@ -280,6 +280,15 @@ public class ChronopicRegisterWindow
                Gtk.Button button = new Gtk.Button("Close");
                button.Clicked += new EventHandler(on_button_clicked);
 
+               //button can be called clicking Escape key
+               Gtk.AccelGroup ag = new Gtk.AccelGroup ();
+               chronopic_register_win.AddAccelGroup (ag);
+
+               button.AddAccelerator
+                       ("activate", ag, new Gtk.AccelKey
+                        (Gdk.Key.Escape, Gdk.ModifierType.None,
+                         Gtk.AccelFlags.Visible));
+
                Gtk.HButtonBox hbox = new Gtk.HButtonBox ();
                hbox.Add(button);
 
@@ -288,7 +297,6 @@ public class ChronopicRegisterWindow
 
        private void on_button_clicked(object o, EventArgs args)
        {
-               //TODO: be called with Escape (accelerator)
                chronopic_register_win.Hide();
                chronopic_register_win = null;
        }