diff -r 9bf197698af0 -r 39cd981ff242 PLCControler.py
--- a/PLCControler.py	Fri Jul 27 10:03:24 2007 +0200
+++ b/PLCControler.py	Thu Aug 02 16:51:58 2007 +0200
@@ -4,7 +4,7 @@
 #This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
 #based on the plcopen standard. 
 #
-#Copyright (C): Edouard TISSERANT and Laurent BESSARD
+#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
 #
 #See COPYING file for copyrights details.
 #
@@ -16,7 +16,7 @@
 #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
-#Lesser General Public License for more details.
+#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
@@ -476,6 +476,7 @@
         if old_name in self.ElementsOpened:
             idx = self.ElementsOpened.index(old_name)
             self.ElementsOpened[idx] = new_name
+        self.Project.updateElementName(old_name, new_name)
         self.RefreshPouUsingTree()
         self.RefreshBlockTypes()
         self.BufferProject()
@@ -649,7 +650,6 @@
             for vartype, varlist in self.ExtractVarLists(vars):
                 configuration.globalVars.append(varlist)
         self.RefreshBlockTypes()
-        self.BufferProject()
     
     # Return the configuration globalvars
     def GetConfigurationGlobalVars(self, name):
@@ -692,7 +692,6 @@
             for vartype, varlist in self.ExtractVarLists(vars):
                 resource.globalVars.append(varlist)
         self.RefreshBlockTypes()
-        self.BufferProject()
     
     # Return the resource globalvars
     def GetConfigurationResourceGlobalVars(self, config_name, name):
@@ -769,7 +768,6 @@
         # Set Pou interface
         pou.setVars(self.ExtractVarLists(vars))
         self.RefreshBlockTypes()
-        self.BufferProject()
     
     # Replace the return type of the pou given by its name (only for functions)
     def SetPouInterfaceReturnType(self, name, type):
@@ -784,7 +782,15 @@
         # Change return type
         return_type.setValue(type)
         self.RefreshBlockTypes()
-        self.BufferProject()
+    
+    def UpdateProjectUsedPous(self, old_name, new_name):
+        if self.Project:
+            self.Project.updateElementName(old_name, new_name)
+    
+    def UpdateCurrentPouEditingUsedVariable(self, old_name, new_name):
+        pou = self.GetCurrentElementEditing()
+        if pou:
+            pou.updateElementName(old_name, new_name)
     
     # Return the return type of the pou given by its name
     def GetPouInterfaceReturnTypeByName(self, name):
@@ -2038,7 +2044,10 @@
             self.Buffering = False
 
     def ProjectIsSaved(self):
-        return self.ProjectBuffer.IsCurrentSaved()
+        if self.ProjectBuffer:
+            return self.ProjectBuffer.IsCurrentSaved()
+        else:
+            return False
 
     def LoadPrevious(self):
         self.Project = self.Copy(self.ProjectBuffer.Previous())