Re: figuring out which TableView I am?
Re: figuring out which TableView I am?
- Subject: Re: figuring out which TableView I am?
- From: David Scheidt <email@hidden>
- Date: Sat, 25 Apr 2009 14:54:12 -0400
On Apr 25, 2009, at 1:34 PM, WT wrote:
On Apr 25, 2009, at 7:26 PM, David Scheidt wrote:
On Apr 25, 2009, at 1:13 PM, WT wrote:
NSTableView inherits from NSControl, which has methods -tag and -
setTag. I would suggest assigning a different tag value to each
instance of your NSTableView subclass (you'd do that in your
subclass' initializer or -awakeFromNib method) and use the -tag
method to identify the instance when you need to do so.
That's perfect. Thanks!
You're welcome. It's my impression that tags are generally under-
utilized, though very useful.
Yes, certainly very useful: makes this problem a switch statement.
(And not fogetting to set them in IB, but I made tag == 0 and the
default: case different ugly colors, so I'll know that someone forgot
to set the right tag (default is zero), or set it to an invalid value
when I see them.) I've got a couple other places in this project
where they'll likely make sense to use, for much the same reasons.
It's also possible to set the tag in IB (it's on the Attributes
Inspector palette, in the "control" tab). Since I'm not creating
any dynamically, I can do that.
It's funny... I fired up IB and created a fake app to check if it
was possible to set the tag through IB before I replied to your
first message but, in my haste, missed it so I thought you'd have to
do it in code.
Well, I'd never used them before. So I looked them up in the
NSControl class docs, which say " Tag values are not used internally;
they are only changed by external invocations of setTag:. You
typically set tag values in Interface Builder and use them at runtime
in your application", so I figured there had to be a way to set them,
and just looked until i found it.
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