[MlMt] Mailing lists and Mailmate

[Seebs]

On 25 Jan 2012, at 17:23, Benny Kjær Nielsen wrote:

> I agree. I use Apples NSTokenField class for the address fields and so 
> far I have been unable to track drag'n'drop actions such that I could 
> remove an address from a source NSTokenField. If anyone has any code 
> which does something like that (for NSTokenFields) then please let me 
> know. I've forgotten the ugly details, but (to me) it was a 
> non-trivial problem. (The workaround is of course to use cut and copy 
> instead.)

Well, it must be possible, 'cuz I think Apple Mail does it.

Cheap workaround:  If a token is dragged into a field, and you notice 
that the token occurs only in one other field, of the same basic type, 
you can just remove it from that field and be right 99% of the time.  Do 
this only if option wasn't down for the drag and it'll look like you're 
moving-or-copying the way people expect that to work, I think?

More generally, you could have a preference with a name like "only allow 
a given address once in recipient fields".  At that point, adding an 
address to a field implicity removes it from all others.  In practice we 
probably want that anyway.

-s