Re: File's Owner

FROM : Shawn Erickson
DATE : Fri May 23 23:07:13 2008

On Fri, May 23, 2008 at 1:27 PM, Shawn Erickson <<email_removed>> wrote:
> On Fri, May 23, 2008 at 11:49 AM, Johnny Lundy <<email_removed>> wrote:


>> I can follow making a generic NSObject set to my custom class, but why
>> File's Owner?

>
> You do this so Interface Builder knows what class the owner of the nib
> will be so it can expose the correct outlets and actions when you
> attempt to make connections to/from the file's owner proxy object with
> other objects in the nib.


To be a little clearer the above is only at play when you are editing
with your nib using Interface Builder. The class you specific in
Interface Builder for the file's owner isn't a factor at runtime.

>> That's all well and good, but what exactly is this thing?

>
> It is a proxy object that allows objects instantiated in the nib to be
> connected with an object outside of the nib, in this case the object
> that has been specified as the owner of the nib when it was loaded.


Again this aspect is only a factor at runtime. The file's owner that
you see when editing a nib file is simply a graphical representation
of the object that will own the nib when the nib is loaded by your
application. It provides a way to make connections to objects in the
nib using control dragging and like.

-Shawn