[chronojump] forceSensor improvements on gui delete_last_test

[Xavier de Blas <xaviblas src gnome org>]

commit a74925c3df0216c635d259438f47f73b62e49a52
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Sep 13 10:24:22 2019 +0200

    forceSensor improvements on gui delete_last_test

 src/gui/forceSensor.cs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/src/gui/forceSensor.cs b/src/gui/forceSensor.cs
index 858e777d..e04368c6 100644
--- a/src/gui/forceSensor.cs
+++ b/src/gui/forceSensor.cs
@@ -423,6 +423,9 @@ public partial class ChronoJumpWindow
        {
                currentForceSensor = new ForceSensor();
                button_force_sensor_capture_recalculate.Sensitive = false;
+               notebook_force_sensor_analyze.Sensitive = false;
+               button_force_sensor_analyze_analyze.Sensitive = false;
+               button_delete_last_test.Sensitive = false;
        }
 
        private bool pulseGTKForceSensorOther ()
@@ -990,6 +993,7 @@ LogB.Information(" re C ");
                                        }
                                        button_force_sensor_capture_recalculate.Sensitive = true;
                                        button_delete_last_test.Sensitive = true;
+                                       notebook_force_sensor_analyze.Sensitive = true;
 
                                        if( configChronojump.Exhibition &&
                                                        ( configChronojump.ExhibitionStationType == 
ExhibitionTest.testTypes.FORCE_ROPE ||
@@ -1493,6 +1497,13 @@ LogB.Information(" re R ");
 
        private void forceSensorDeleteTest()
        {
+               //solve possible gui problems
+               if(currentForceSensor == null || currentForceSensor.UniqueID == -1)
+               {
+                       new DialogMessage(Constants.MessageTypes.WARNING, "Test does not exists. Cannot be 
deleted");
+                       return;
+               }
+
                if(preferences.askDeletion) {
                        ConfirmWindow confirmWin = ConfirmWindow.Show(Catalog.GetString(
                                                "Are you sure you want to delete this set?"), "", "");
@@ -1509,8 +1520,7 @@ LogB.Information(" re R ");
                currentForceSensor = new ForceSensor();
 
                //empty forceSensor GUI
-               button_delete_last_test.Sensitive = false;
-               button_force_sensor_capture_recalculate.Sensitive = false;
+               blankForceSensorInterface();
        }
 
        void forceSensorDoRFDGraph()