monkey patch Localizer so that it gets a translate method callable from the outside

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5325 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/patches/Localizer.py

@@ -12,21 +12,19 @@
 #
 ##############################################################################
 
-from Products.CMFCore.utils import getToolByName
-
-
 # Template() is a new method of python 2.4, that's why we have the string.py
-#   file in ERP5Form.
+#   file in patches directory.
 try:
   from string import Template
 except ImportError:
   from Products.ERP5Type.patches.string import Template
 
-
+from Products.CMFCore.utils import getToolByName
+from Products.Localizer.MessageCatalog import _marker
 
 class LocalizerTranslationService:
   def translate( self, domain, msgid
-               , mapping=None, context=None, target_language=None, default=None
+               , mapping=None, context=None, target_language=None, default=_marker
                , *args, **kw):
     """
       This translate() method use Localizer and support catalog aliases.
@@ -38,20 +36,14 @@ class LocalizerTranslationService:
                               }
     
     # Get Localizer
-    localizer = getToolByName(context, 'Localizer')
+    localizer = getToolByName(self, 'Localizer')
     # Get the Localizer catalog id
-    catalog_id = None
-    if domain in message_catalog_aliases.keys():
-      catalog_id = message_catalog_aliases[domain]
-    else:
-      catalog_id = domain
+    catalog_id = message_catalog_aliases.get(domain, domain)
     if catalog_id not in localizer.objectIds():
       # No catalog found: return the untranslated string
       return msgid
+      
     catalog_obj = localizer[catalog_id]
-    # Adapt Translation Service default value to the Localizer one
-    if default == None:
-      default = msgid
     # Call the Message Catalog gettext method
     translated_str = catalog_obj.gettext( message = msgid
                                         , lang    = target_language
@@ -62,11 +54,10 @@ class LocalizerTranslationService:
     return translated_str
 
 
-
 # Use the patched translate() method
-from Products.PageTemplates import GlobalTranslationService
+from Products.Localizer import GlobalTranslationService, Localizer
 
-def setGlobalTranslationService(service):
-  GlobalTranslationService.translationService = LocalizerTranslationService()
+GlobalTranslationService.translate = LocalizerTranslationService.translate
+Localizer.Localizer.translate = LocalizerTranslationService.translate
+Localizer.Localizer.tranlate__roles__ = None # public
 
-GlobalTranslationService.setGlobalTranslationService = setGlobalTranslationService