diff -r 1460273f40ed -r 5743cbdff669 dialogs/SFCStepNameDialog.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dialogs/SFCStepNameDialog.py	Fri Sep 07 16:45:55 2012 +0200
@@ -0,0 +1,73 @@
+# -*- coding: utf-8 -*-
+
+#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
+#based on the plcopen standard. 
+#
+#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
+#
+#See COPYING file for copyrights details.
+#
+#This library is free software; you can redistribute it and/or
+#modify it under the terms of the GNU General Public
+#License as published by the Free Software Foundation; either
+#version 2.1 of the License, or (at your option) any later version.
+#
+#This library is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#General Public License for more details.
+#
+#You should have received a copy of the GNU General Public
+#License along with this library; if not, write to the Free Software
+#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+import wx
+
+#-------------------------------------------------------------------------------
+#                          Edit Step Name Dialog
+#-------------------------------------------------------------------------------
+
+class SFCStepNameDialog(wx.TextEntryDialog):
+
+    def __init__(self, parent, message, caption = "Please enter text", defaultValue = "", 
+                       style = wx.OK|wx.CANCEL|wx.CENTRE, pos = wx.DefaultPosition):
+        wx.TextEntryDialog.__init__(self, parent, message, caption, defaultValue, style, pos)
+        
+        self.PouNames = []
+        self.Variables = []
+        self.StepNames = []
+        
+        self.Bind(wx.EVT_BUTTON, self.OnOK, 
+              self.GetSizer().GetItem(2).GetSizer().GetItem(1).GetSizer().GetAffirmativeButton())
+        
+    def OnOK(self, event):
+        message = None
+        step_name = self.GetSizer().GetItem(1).GetWindow().GetValue()
+        if step_name == "":
+            message = _("You must type a name!")
+        elif not TestIdentifier(step_name):
+            message = _("\"%s\" is not a valid identifier!") % step_name
+        elif step_name.upper() in IEC_KEYWORDS:
+            message = _("\"%s\" is a keyword. It can't be used!") % step_name
+        elif step_name.upper() in self.PouNames:
+            message = _("A POU named \"%s\" already exists!") % step_name
+        elif step_name.upper() in self.Variables:
+            message = _("A variable with \"%s\" as name already exists in this pou!") % step_name
+        elif step_name.upper() in self.StepNames:
+            message = _("\"%s\" step already exists!") % step_name
+        if message is not None:
+            dialog = wx.MessageDialog(self, message, _("Error"), wx.OK|wx.ICON_ERROR)
+            dialog.ShowModal()
+            dialog.Destroy()
+        else:
+            self.EndModal(wx.ID_OK)
+        event.Skip()
+
+    def SetPouNames(self, pou_names):
+        self.PouNames = [pou_name.upper() for pou_name in pou_names]
+
+    def SetVariables(self, variables):
+        self.Variables = [var["Name"].upper() for var in variables]
+
+    def SetStepNames(self, step_names):
+        self.StepNames = [step_name.upper() for step_name in step_names]