diff -r d51af006fa6b -r 64d8f52bc8c8 dialogs/ConnectionDialog.py
--- a/dialogs/ConnectionDialog.py	Fri Aug 11 15:18:19 2017 +0300
+++ b/dialogs/ConnectionDialog.py	Mon Aug 14 19:13:01 2017 +0300
@@ -39,7 +39,7 @@
 """
 
 class ConnectionDialog(BlockPreviewDialog):
-    
+
     def __init__(self, parent, controller, tagname, apply_button=False):
         """
         Constructor
@@ -49,49 +49,49 @@
         @param apply_button: Enable button for applying connector modification
         to all connector having the same name in POU (default: False)
         """
-        BlockPreviewDialog.__init__(self, parent, controller, tagname, 
+        BlockPreviewDialog.__init__(self, parent, controller, tagname,
               title=_('Connection Properties'))
-        
+
         # Init common sizers
         self._init_sizers(2, 0, 7, 1, 0, None)
-        
+
         # Create label for connection type
         type_label = wx.StaticText(self, label=_('Type:'))
         self.LeftGridSizer.AddWindow(type_label, flag=wx.GROW)
-        
+
         # Create radio buttons for selecting connection type
         self.TypeRadioButtons = {}
         first = True
         for type, label in [(CONNECTOR, _('Connector')),
                             (CONTINUATION, _('Continuation'))]:
-            radio_button = wx.RadioButton(self, label=label, 
+            radio_button = wx.RadioButton(self, label=label,
                   style=(wx.RB_GROUP if first else 0))
             radio_button.SetValue(first)
             self.Bind(wx.EVT_RADIOBUTTON, self.OnTypeChanged, radio_button)
             self.LeftGridSizer.AddWindow(radio_button, flag=wx.GROW)
             self.TypeRadioButtons[type] = radio_button
             first = False
-        
+
         # Create label for connection name
         name_label = wx.StaticText(self, label=_('Name:'))
         self.LeftGridSizer.AddWindow(name_label, flag=wx.GROW)
-        
+
         # Create text control for defining connection name
         self.ConnectionName = wx.TextCtrl(self)
         self.ConnectionName.SetMinSize(wx.Size(200,-1))
         self.Bind(wx.EVT_TEXT, self.OnNameChanged, self.ConnectionName)
         self.LeftGridSizer.AddWindow(self.ConnectionName, flag=wx.GROW)
-        
+
         # Add preview panel and associated label to sizers
         self.Preview.SetMinSize(wx.Size(-1,100))
         self.LeftGridSizer.AddWindow(self.PreviewLabel, flag=wx.GROW)
         self.LeftGridSizer.AddWindow(self.Preview, flag=wx.GROW)
-        
+
         # Add buttons sizer to sizers
-        self.MainSizer.AddSizer(self.ButtonSizer, border=20, 
+        self.MainSizer.AddSizer(self.ButtonSizer, border=20,
               flag=wx.ALIGN_RIGHT|wx.BOTTOM|wx.LEFT|wx.RIGHT)
         self.ColumnSizer.RemoveSizer(self.RightGridSizer)
-        
+
         # Add button for applying connection name modification to all connection
         # of POU
         if apply_button:
@@ -105,10 +105,10 @@
                 controller.GenerateNewName(
                         tagname, None, "Connection%d", 0))
         self.Fit()
-        
+
         # Connector radio button is default control having keyboard focus
         self.TypeRadioButtons[CONNECTOR].SetFocus()
-    
+
     def GetConnectionType(self):
         """
         Return type selected for connection
@@ -117,7 +117,7 @@
         return (CONNECTOR
                 if self.TypeRadioButtons[CONNECTOR].GetValue()
                 else CONTINUATION)
-    
+
     def SetValues(self, values):
         """
         Set default connection parameters
@@ -125,18 +125,18 @@
         """
         # For each parameters defined, set corresponding control value
         for name, value in values.items():
-            
+
             # Parameter is connection type
             if name == "type":
                 self.TypeRadioButtons[value].SetValue(True)
-            
+
             # Parameter is connection name
             elif name == "name":
                 self.ConnectionName.SetValue(value)
-        
+
         # Refresh preview panel
         self.RefreshPreview()
-    
+
     def GetValues(self):
         """
         Return connection parameters defined in dialog
@@ -154,23 +154,23 @@
         @return: True if connection name is valid
         """
         message = None
-        
+
         # Get connection name typed by user
         connection_name = self.ConnectionName.GetValue()
-        
+
         # Test that a name have been defined
         if connection_name == "":
             message = _("Form isn't complete. Name must be filled!")
-        
+
         # If an error have been identify, show error message dialog
         if message is not None:
             self.ShowErrorMessage(message)
             # Test failed
             return False
-        
+
         # Return result of element name test
         return self.TestElementName(connection_name)
-        
+
     def OnOK(self, event):
         """
         Called when dialog OK button is pressed
@@ -206,17 +206,16 @@
         """
         self.RefreshPreview()
         event.Skip()
-        
+
     def RefreshPreview(self):
         """
         Refresh preview panel of graphic element
         Override BlockPreviewDialog function
         """
         # Set graphic element displayed, creating a FBD connection element
-        self.Element = FBD_Connector(self.Preview, 
+        self.Element = FBD_Connector(self.Preview,
                 self.GetConnectionType(),
                 self.ConnectionName.GetValue())
-        
+
         # Call BlockPreviewDialog function
         BlockPreviewDialog.RefreshPreview(self)
-