Added ``@named(name)`` declaration.

The decorator specifies the component name, so it does not have to be
passed in during registration. This in turn allows developers to define
component names once globally and use it everywhere, especially when
using ZCML where the name had to be specified a second time.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/zope/interface/declarations.py b/src/zope/interface/declarations.py
index 0992adc..06b1688 100644
--- a/src/zope/interface/declarations.py
+++ b/src/zope/interface/declarations.py
@@ -49,6 +49,15 @@ _ADVICE_ERROR = ('Class advice impossible in Python3.  '
 _ADVICE_WARNING = ('The %s API is deprecated, and will not work in Python3  '
                    'Use the @%s class decorator instead.')
 
+class named(object):
+
+    def __init__(self, name):
+        self.name = name
+
+    def __call__(self, ob):
+        ob.__component_name__ = self.name
+        return ob
+
 class Declaration(Specification):
     """Interface declarations"""