[Zope-CMF] Re: [CMF 2.1] FSPageTemplate & Unicode

[Martin Aspeli]

Dieter Maurer wrote:
> Martin Aspeli wrote at 2007-1-7 23:40 +0000:
>> ...
>> Why not do it a more Zope3 ish way:
>>
>> class ICMFTool(Interface):
>>    """Marker for any CMF tool"""
>>
>> and then in the subclass of the local component registry:
>>
>> local_utility = ....
>> if ICMFTool.providedBy(local_utility):
>>     local_utility = local_utility.__of__(context)
>>
>> or so.
> 
> No need to invent a new marker interface for this.
> 
>   Objects ready to participate in context wrapping indicate this
>   by the "__of__" method...

No, no need, but I'd argue good reasons.

  - It's an explicit declaration of support
  - It's a lot less magic
  - It's prettier than getattr/hasattr
  - If something else has an __of__() for whatever reason, we don't 
catch it by accident.
  - It may not be desirable to wrap everything that *could* be wrapped.

Martin