[chronojump] Photocells/sprint on mac check on sprint/export if R is installed. If not, show message.

[Xavier de Blas <xaviblas src gnome org>]

commit f48eac82bc3040b19b567a2cdd32dcc79b19eec6
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Feb 18 13:46:29 2022 +0100

    Photocells/sprint on mac check on sprint/export if R is installed. If not, show message.

 src/gui/sprint.cs | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)
---
diff --git a/src/gui/sprint.cs b/src/gui/sprint.cs
index cbca6800b..3ca8e487c 100644
--- a/src/gui/sprint.cs
+++ b/src/gui/sprint.cs
@@ -206,6 +206,13 @@ public partial class ChronoJumpWindow
 
        private void on_button_sprint_clicked (object o, EventArgs args)
        {
+               if(operatingSystem == UtilAll.OperatingSystems.MACOSX &&
+                               ! Util.FileExists(Constants.ROSX) )
+               {
+                       showMacRInstallMessage ();
+                       return;
+               }
+
                if(! GetSelectedSprint(treeview_runs_interval_sprint))
                {
                        new DialogMessage(Constants.MessageTypes.WARNING, Catalog.GetString("Error"));
@@ -334,7 +341,15 @@ public partial class ChronoJumpWindow
 
        private void on_button_sprint_export_not_set_clicked (object o, EventArgs args)
        {
-               // 1) check if all sessions
+               // 1) avoid exporting to R on mac if R is not installed
+               if(operatingSystem == UtilAll.OperatingSystems.MACOSX &&
+                               ! Util.FileExists(Constants.ROSX) )
+               {
+                       showMacRInstallMessage ();
+                       return;
+               }
+
+               // 2) check if all sessions
                if(radio_sprint_analyze_individual_all_sessions.Active)
                {
                        if(currentPerson == null)
@@ -344,7 +359,7 @@ public partial class ChronoJumpWindow
                        return;
                }
 
-               // 2) current session (individual or groupal)
+               // 3) current session (individual or groupal)
                if(currentSession == null)
                        return;