[chronojump] Open logs directory creates it if doesn't exist

[Xavier de Blas <xaviblas src gnome org>]

commit 9cc2b95aa33a60b870b56d740ff20c003caf8de1
Author: Xavier de Blas <xaviblas gmail com>
Date:   Sun Jun 29 11:52:31 2014 +0200

    Open logs directory creates it if doesn't exist

 src/constants.cs       |    2 +-
 src/gui/preferences.cs |   20 ++++++++++++++++----
 2 files changed, 17 insertions(+), 5 deletions(-)
---
diff --git a/src/constants.cs b/src/constants.cs
index a13c87c..ea7e715 100644
--- a/src/constants.cs
+++ b/src/constants.cs
@@ -569,7 +569,7 @@ public class Constants
        };
        
        public static string DatabaseNotFound = Catalog.GetString("Error. Cannot find database.");
-       public static string LogNotFound = Catalog.GetString("Error. Cannot find logs directory.");
+       public static string DirectoryCannotOpen = Catalog.GetString("Error. Cannot open directory.");
 
        public static string ChronopicDefaultPortWindows = "COM?";
        public static string ChronopicDefaultPortLinux = "/dev/ttyUSB?";
diff --git a/src/gui/preferences.cs b/src/gui/preferences.cs
index 2ba2ec8..4529d4e 100644
--- a/src/gui/preferences.cs
+++ b/src/gui/preferences.cs
@@ -368,12 +368,24 @@ public class PreferencesWindow {
        {
                string dir = Util.GetLogsDir();
                Log.WriteLine(dir);
-
-               if(new System.IO.DirectoryInfo(dir).Exists)
+               
+               if( ! new System.IO.DirectoryInfo(dir).Exists) {
+                       try {
+                               Directory.CreateDirectory (dir);
+                       } catch {
+                               new DialogMessage(Constants.MessageTypes.WARNING, 
+                                               Catalog.GetString("Cannot create directory.") + "\n\n" + dir);
+                               return;
+                       }
+               }
+               
+               try {
                        System.Diagnostics.Process.Start(dir); 
-               else
+               }
+               catch {
                        new DialogMessage(Constants.MessageTypes.WARNING, 
-                                       Constants.LogNotFound + "\n\n" + dir);
+                                       Constants.DirectoryCannotOpen + "\n\n" + dir);
+               }
        }