[chronojump] Don't allow to change to 'show data' while encoder exercise config

[Xavier de Blas <xaviblas src gnome org>]

commit 2428745c4079ace62176ae21a5ad6018bfc3808f
Author: Xavier de Blas <xaviblas gmail com>
Date:   Thu Nov 9 12:44:56 2017 +0100

    Don't allow to change to 'show data' while encoder exercise config

 src/gui/encoder.cs |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/src/gui/encoder.cs b/src/gui/encoder.cs
index 85c6a10..0085146 100644
--- a/src/gui/encoder.cs
+++ b/src/gui/encoder.cs
@@ -3991,10 +3991,19 @@ public partial class ChronoJumpWindow
                        //if seeing "show table" move to "show graph" (encoder exercise stuff is there)
                        if(notebook_encoder_capture_main.CurrentPage == 1)
                                notebook_encoder_capture_main.CurrentPage = 0;
+
+                       //don't show the page 'show table', while exercise or instructions is shown
+                       if(notebook_encoder_capture_main.NPages > 0)
+                               notebook_encoder_capture_main.GetNthPage(1).Hide();
                }
-               else
+               else {
                        notebook_encoder_capture_or_exercise_or_instructions.Page = 0;
 
+                       //show againthe page 'show table', while exercise or instructions is shown
+                       if(notebook_encoder_capture_main.NPages > 0)
+                               notebook_encoder_capture_main.GetNthPage(1).Show();
+               }
+
                main_menu.Sensitive = ! show;
                hbox_encoder_sup_capture_analyze.Sensitive = ! show;
                notebook_session_person.Sensitive = ! show;