keep old workflow chain at upgrade

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5422 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -106,6 +106,7 @@ def removeAll(entry):
   except OSError:
     pass
 
+
 def getChainByType(context):
   """
   This is used in order to construct the full list
@@ -135,7 +136,6 @@ def getChainByType(context):
   default_chain=', '.join(pw._default_chain)
   return (default_chain, new_dict)
 
-
 class BusinessTemplateArchive:
   """
     This is the base class for all Business Template archives
@@ -1173,6 +1173,14 @@ class PortalTypeWorkflowChainTemplateItem(BaseTemplateItem):
           if action == 'nothing':
             continue          
         portal_type = path.split('/', 1)[1]
+        if chain_dict.has_key('chain_%s' % portal_type):          
+          old_chain_dict = chain_dict['chain_%s' % portal_type]
+          # XXX we don't use the chain (Default) in erp5 so don't keep it
+          if old_chain_dict != '(Default)' and old_chain_dict != '':
+            chain_dict['chain_%s' % portal_type] = old_chain_dict +', '+self._objects[path]
+          else:
+            chain_dict['chain_%s' % portal_type] = self._objects[path]            
+        else:
           chain_dict['chain_%s' % portal_type] = self._objects[path]
     context.portal_workflow.manage_changeWorkflows(default_chain,
                                                    props=chain_dict)
@@ -2057,6 +2065,8 @@ class ModuleTemplateItem(BaseTemplateItem):
 
   def uninstall(self, context, **kw):
     trash = kw.get('trash', 0)
+    if trash:
+      return
     object_path = kw.get('object_path', None)
     trashbin = kw.get('trashbin', None)
     if object_path is None: