Re: NSFormatter what table am I in ??

FROM : Clark S. Cox III
DATE : Tue Nov 19 14:16:13 2002

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On Monday, Nov 18, 2002, at 14:44 US/Eastern, Robert Miller wrote:

> Hello,
>
>     Does anyone know if it is possible to determine 'where' an
> NSFormatter is being used. That is, if I have one attached to an
> NSTableView -> NSTableColumn dataCell. Is it possible to get a
> backward reference to the NSTableView given the NSFormatter reference > ?

   No, there isn't, at least not to my knowledge. That being said, I
actually think that it's a good idea that we can't get any kind of
reference back to the cell being formatted. A formatters only job is to
blindly convert strings to object values, and object values to strings,
and returning any errors that come up in the process. IMHO, that
seperation of duties is a good idea, and prevents formatters from
becoming overly complex.
   That being said, you could probably achieve this by adding an instance
variable to your NSFormatter subclass that points to a particular cell,
and simply setting that variable when you attach the formatter. The
problem with this approach is that a single formatter can be attached
to multiple cells.

- --
http://homepage.mac.com/clarkcox3/
<email_removed>
Clark S. Cox, III
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