[chronojump] Encoder does not crash if no EMD

[Xavier de Blas <xaviblas src gnome org>]

commit 6a3c8188d22371a48623673f70051dc2e6bb0d24
Author: Xavier de Blas <xaviblas gmail com>
Date:   Mon Nov 4 16:27:44 2013 +0100

    Encoder does not crash if no EMD

 src/gui/encoder.cs |   29 +++++++++++++++++++++++------
 1 files changed, 23 insertions(+), 6 deletions(-)
---
diff --git a/src/gui/encoder.cs b/src/gui/encoder.cs
index 76ac018..0ad48fe 100644
--- a/src/gui/encoder.cs
+++ b/src/gui/encoder.cs
@@ -1742,9 +1742,9 @@ public partial class ChronoJumpWindow
        bool RInitialized = false;      
        REngine rengine;
 
-       private void runEncoderCaptureCsharpInitializeR() {
+       private bool runEncoderCaptureCsharpInitializeR() {
                if(RInitialized)
-                       return;
+                       return true;
 
                Log.WriteLine("initializing rdotnet");
                
@@ -1752,12 +1752,20 @@ public partial class ChronoJumpWindow
                // From v1.5, REngine requires explicit initialization.
                // You can set some parameters.
 
-               rengine.Initialize();
+               try {
+                       rengine.Initialize();
+               } catch {
+                       return false;
+               }
                //Previous command, unfortunatelly localizes all GUI to english
                //then call Catalog.Init again in order to see new windows localised            
                Catalog.Init("chronojump",System.IO.Path.Combine(Util.GetPrefixDir(),"share/locale"));
 
-               rengine.Evaluate("library(\"EMD\")");
+               try {
+                       rengine.Evaluate("library(\"EMD\")");
+               } catch {
+                       return false;
+               }
 
                // .NET Framework array to R vector.
                NumericVector group1 = rengine.CreateNumericVector(new double[] { 30.02, 29.99, 30.11, 29.97, 
30.01, 29.99 });
@@ -1776,6 +1784,8 @@ public partial class ChronoJumpWindow
                RInitialized = true;
 
                Log.WriteLine("initialized rdotnet");
+
+               return true;
        }
                
 
@@ -4017,7 +4027,14 @@ Log.WriteLine(str);
                        Log.WriteLine("CCCCCCCCCCCCCCC");
                        if( runEncoderCaptureCsharpCheckPort(chronopicWin.GetEncoderPort()) ) {
                                
-                               runEncoderCaptureCsharpInitializeR();
+                               bool ok = runEncoderCaptureCsharpInitializeR();
+                               if(! ok) {
+                                       new DialogMessage(Constants.MessageTypes.WARNING,
+                                                       Catalog.GetString("Sorry. Error doing graph.") +
+                                                       "\n" + Catalog.GetString("Maybe R or EMD are not 
installed.") +
+                                                       "\n\nhttp://www.r-project.org/";);
+                                       return;
+                               }
 
                                UtilGtk.ErasePaint(encoder_capture_drawingarea, encoder_capture_pixmap);
                                layout_encoder_capture = new Pango.Layout 
(encoder_capture_drawingarea.PangoContext);
@@ -4225,7 +4242,7 @@ Log.WriteLine(str);
                                if(encoderProcessProblems) {
                                        new DialogMessage(Constants.MessageTypes.WARNING, 
                                                        Catalog.GetString("Sorry. Error doing graph.") + 
-                                                       "\n" + Catalog.GetString("Maybe R is not installed.") 
+ 
+                                                       "\n" + Catalog.GetString("Maybe R or EMD are not 
installed.") + 
                                                        "\n\nhttp://www.r-project.org/";);
                                        encoderProcessProblems = false;
                                } else