Avoid warnings on adding/removing objects

Author: J. David Ibanez

Localizer.py

@@ -25,11 +25,13 @@
 from Acquisition import aq_parent
 from App.class_init import InitializeClass
 from OFS.Folder import Folder
+from zLOG import LOG, ERROR, INFO, PROBLEM
+from zope.interface import implements
 from ZPublisher.BeforeTraverse import registerBeforeTraverse, \
      unregisterBeforeTraverse, queryBeforeTraverse, NameCaller
-from zLOG import LOG, ERROR, INFO, PROBLEM
 
 # Import Localizer modules
+from interfaces import ILocalizer
 from LocalFiles import LocalDTMLFile
 from MessageCatalog import MessageCatalog
 from utils import lang_negotiator
@@ -56,6 +58,7 @@ class Localizer(LanguageManager, Folder):
     """
 
     meta_type = 'Localizer'
+    implements(ILocalizer)
 
     id = 'Localizer'
 
@@ -82,22 +85,6 @@ def __init__(self, title, languages):
     #######################################################################
     # API / Private
     #######################################################################
-
-    # Hook/unhook the traversal machinery
-    # Support for copy, cut and paste operations
-    def manage_beforeDelete(self, item, container):
-        if item is self:
-            unregisterBeforeTraverse(container, self.meta_type)
-
-
-    def manage_afterAdd(self, item, container):
-        if item is self:
-            id = self.id
-            container = container.this()
-            hook = NameCaller(id)
-            registerBeforeTraverse(container, hook, self.meta_type)
-
-
     def _getCopy(self, container):
         return Localizer.inheritedAttribute('_getCopy')(self, container)
 
@@ -249,3 +236,19 @@ def changeLanguage(self, lang, goto=None, expires=None):
 
 
 InitializeClass(Localizer)
+
+
+# Hook/unhook the traversal machinery
+# Support for copy, cut and paste operations
+
+def Localizer_moved(object, event):
+    container = event.oldParent
+    if container:
+        unregisterBeforeTraverse(container, object.meta_type)
+
+    container = event.newParent
+    if container:
+        id = object.id
+        container = container.this()
+        hook = NameCaller(id)
+        registerBeforeTraverse(container, hook, object.meta_type)

MessageCatalog.py

@@ -43,12 +43,13 @@
 from OFS.SimpleItem import SimpleItem
 from Persistence import PersistentMapping
 from ZPublisher import HTTPRequest
-from zope.i18n.interfaces import ITranslationDomain
-from zope.interface import implements
 from zope.component import getSiteManager
 from zope.i18n import interpolate
+from zope.i18n.interfaces import ITranslationDomain
+from zope.interface import implements
 
 # Import from Localizer
+from interfaces import IMessageCatalog
 from LanguageManager import LanguageManager
 from LocalFiles import LocalDTMLFile
 from utils import charsets, lang_negotiator, _
@@ -146,11 +147,14 @@ def manage_addMessageCatalog(self, id, title, languages, sourcelang=None,
         return self.manage_main(self, REQUEST)
 
 
+
 class MessageCatalog(LanguageManager, ObjectManager, SimpleItem):
     """Stores messages and their translations...
     """
 
     meta_type = 'MessageCatalog'
+    implements(IMessageCatalog)
+
 
     security = ClassSecurityInfo()
 
@@ -177,8 +181,6 @@ def __init__(self, id, title, sourcelang, languages):
     # ITranslationDomain interface
     # zope.i18n.interfaces.ITranslationDomain
     #######################################################################
-    implements(ITranslationDomain)
-
     @property
     def domain(self):
         """ """
@@ -192,18 +194,6 @@ def translate(self, msgid, mapping=None, context=None,
         return interpolate(msgstr, mapping)
 
 
-    def manage_afterAdd(self, item, container):
-        if item is self:
-            sm = getSiteManager(container)
-            sm.registerUtility(self, ITranslationDomain, self.domain)
-
-
-    def manage_beforeDelete(self, item, container):
-        if item is self:
-            sm = getSiteManager(container)
-            sm.unregisterUtility(self, ITranslationDomain, self.domain)
-
-
     #######################################################################
     # Private API
     #######################################################################
@@ -919,3 +909,19 @@ def PUT(self, REQUEST, RESPONSE):
 
 InitializeClass(MessageCatalog)
 InitializeClass(POFile)
+
+
+
+def MessageCatalog_moved(object, event):
+    # FIXME This does not work if what we move is the folder that contains
+    # the message catalog
+    container = event.oldParent
+    if container:
+        sm = getSiteManager(container)
+        sm.unregisterUtility(object, ITranslationDomain, event.oldName)
+
+    container = event.newParent
+    if container:
+        sm = getSiteManager(container)
+        sm.registerUtility(object, ITranslationDomain, event.newName)
+

configure.zcml

@@ -0,0 +1,13 @@
+<configure xmlns="http://namespaces.zope.org/zope">
+
+  <subscriber
+    for="Products.Localizer.Localizer.Localizer
+         zope.lifecycleevent.interfaces.IObjectMovedEvent"
+    handler="Products.Localizer.Localizer.Localizer_moved" />
+
+  <subscriber
+    for="Products.Localizer.MessageCatalog.MessageCatalog
+         zope.lifecycleevent.interfaces.IObjectMovedEvent"
+    handler="Products.Localizer.MessageCatalog.MessageCatalog_moved" />
+
+</configure>

interfaces.py

@@ -0,0 +1,28 @@
+# -*- coding: UTF-8 -*-
+# Copyright (C) 2010 Juan David Ibáñez Palomar <[email protected]>
+#
+# This program 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 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Import from Zope
+from zope.interface import Interface
+from zope.i18n.interfaces import ITranslationDomain
+
+
+class ILocalizer(Interface):
+    pass
+
+
+class IMessageCatalog(ITranslationDomain):
+    pass
+