[Zope-Checkins] SVN: Products.Five/branches/1.5/site/metaconfigure.py * don't barf if we try to load the localsite hook for the same class more

[Rob Miller]

Log message for revision 71342:
  * don't barf if we try to load the localsite hook for the same class more
    than once
  

Changed:
  U   Products.Five/branches/1.5/site/metaconfigure.py

-=-
Modified: Products.Five/branches/1.5/site/metaconfigure.py
===================================================================
--- Products.Five/branches/1.5/site/metaconfigure.py	2006-11-30 21:48:16 UTC (rev 71341)
+++ Products.Five/branches/1.5/site/metaconfigure.py	2006-11-30 22:18:48 UTC (rev 71342)
@@ -40,7 +40,12 @@
                            "See Five/doc/localsite.txt .",
                            DeprecationWarning, 
                            _context.info.file, _context.info.line)
-    if site_class is not None:
+
+    # only install the hook once
+    already = getattr(class_, '_localsite_marker', False)
+
+    if site_class is not None and not already:
+        class_._localsite_marker = True
         _context.action(
             discriminator = (class_,),
             callable = classSiteHook,
@@ -61,6 +66,8 @@
         delattr(class_, 'getSiteManager')
         delattr(class_, 'setSiteManager')
         classImplementsOnly(class_, implementedBy(class_)-IPossibleSite)
+        if getattr(class_, '_localsite_marker', False):
+            delattr(class_, '_localsite_marker')
 
 from zope.testing.cleanup import addCleanUp
 addCleanUp(uninstallSiteHooks)