Added navigation_local option - for setting local panel managers

  on INavigationRoot instead of ISiteRoot. Useful eg. with modules for
  multilingual content.

CHANGES.rst

@@ -5,6 +5,11 @@ In next release ...
 
 Features:
 
+- Added navigation_local option - for setting local panel managers
+  on INavigationRoot instead of ISiteRoot. Useful eg. with modules for
+  multilingual content.
+  [tmog]
+
 - Added function to duplicate an existing panel.
 
 - The "Manage panels" form now has a better default styling.

src/collective/panels/browser.py

@@ -36,6 +36,7 @@
 from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
 from Products.statusmessages.interfaces import IStatusMessage
 from Products.CMFCore.interfaces import ISiteRoot
+from plone.app.layout.navigation.interfaces import INavigationRoot
 from ZODB.POSException import ConflictError
 from zExceptions import NotFound
 
@@ -262,6 +263,18 @@ def __call__(self):
 
 class BaseViewlet(ViewletBase):
 
+    def __init__(self, context, request, view, manager=None):
+        super(BaseViewlet, self).__init__(context, request,  view, manager)
+
+        self.root_interface = ISiteRoot
+        try:
+            settings = getUtility(IRegistry).forInterface(IGlobalSettings)
+        except (ComponentLookupError, KeyError):
+            pass
+        else:
+            if settings.navigation_local:
+                self.root_interface = INavigationRoot
+
     @property
     def can_manage(self):
         try:
@@ -274,7 +287,7 @@ def can_manage(self):
         else:
             for interface in settings.site_local_managers or ():
                 if interface.providedBy(self.manager):
-                    if not ISiteRoot.providedBy(self.context):
+                    if not self.root_interface.providedBy(self.context):
                         return False
 
         if IManagePanels.providedBy(self.request):
@@ -382,7 +395,7 @@ def _iter_enabled_viewlet_managers(self):
         except (ComponentLookupError, KeyError):
             ignore_list = ()
         else:
-            if not ISiteRoot.providedBy(self.context):
+            if not self.root_interface.providedBy(self.context):
                 ignore_list = settings.site_local_managers or ()
             else:
                 ignore_list = ()
@@ -426,7 +439,7 @@ def panels(self):
         else:
             for interface in settings.site_local_managers or ():
                 if interface.providedBy(self.manager):
-                    while not ISiteRoot.providedBy(context):
+                    while not self.root_interface.providedBy(context):
                         context = context.aq_parent
                         if context is None:
                             raise RuntimeError("No site found.")

src/collective/panels/interfaces.py

@@ -74,6 +74,16 @@ class IGlobalSettings(Interface):
             )
         )
 
+    navigation_local = schema.Bool(
+        title=_(u"Use navigation root"),
+        description=_(u"Site-local panel managers will be assignable "
+                      u"on navigation roots instead of only site roots "
+                      u"if you select this option. Check this if you are "
+                      u"using LinguaPlone, collective.multilingual or "
+                      u"similar, and you want per-language Site-local "
+                      u"panel managers."),
+        )
+
     spacing = schema.Float(
         title=_(u"Column spacing"),
         description=_(u"This is the horizontal distance between "

src/collective/panels/locales/collective.panels.pot

@@ -135,4 +135,10 @@ msgid "Manage panel"
 msgstr ""
 
 msgid "Spacing changed"
+msgstr ""
+
+msgid "Use navigation root"
+msgstr ""
+
+msgid "Site-local panel managers will be assignable on navigation roots instead of only site roots if you select this option. Check this if you are using LinguaPlone, collective.multilingual or similar, and you want per-language Site-local panel managers.Spacing changed"
 msgstr ""

src/collective/panels/locales/da/LC_MESSAGES/collective.panels.po

@@ -162,3 +162,9 @@ msgid "Select this option to omit margins on the left- and right side of a panel
 msgstr "Vælg denne mulighed for at udelade venstre- og højre-margen omkring et panel."
 msgid "Manage panels"
 msgstr "Administrer paneler"
+
+msgid "Use navigation root"
+msgstr "Benyt navigationrod i stedet for siterod"
+
+msgid "Site-local panel managers will be assignable on navigation roots instead of only site roots if you select this option. Check this if you are using LinguaPlone, collective.multilingual or similar, and you want per-language Site-local panel managers."
+msgstr "Vælg dette hvis sitet bruger LinguaPlone, collective.multilingual el.lign. modul til indholdsoversættelse. Placeringer med oprettelse på site-basis vil derefter kunne konfigureres per sprog."