Re: subclassing NSTabViewItem

FROM : Mike Ferris
DATE : Fri Jan 03 18:21:52 2003

FYI, You can pose at any time.  The catch is that posing affects only
new instances created after the pose.

But Matt is right that this is probably not a good situation for
posing.  Posing should usually be considered only as a last resort.

Mike


Begin forwarded message:

> From: matt neuburg <<email_removed>>
> Date: Thu Jan 2, 2003  9:29:22 AM US/Pacific
> To: Jeffrey Drake <<email_removed>>
> Cc: <email_removed>
> Subject: Re: subclassing NSTabViewItem
>
> On Thu, 2 Jan 2003 01:02:02 -0500, Jeffrey Drake <<email_removed>>
> said:
>

>> @interface JDTabViewItem : NSTabViewItem
>> - (void)drawLabel:(BOOL)shouldTruncateLabel inRect:(NSRect)tabRect;
>> - (NSSize)sizeOfLabel:(BOOL)shouldTruncateLabel;
>> @end
>>
>> To set it all up:
>> + (void)initialize
>> {
>>  [JDTabViewItem poseAsClass:  [NSTabViewItem class]];
>> }
>>
>> According to all the information I have this should work. Debugging
>> indicates that initialize is being called fine, but the two functions
>> above are not.
>>
>> Is there something I am missing?

>
> On my understanding of the docs, if you're going to pose you must do
> it *before* initialize is ever called. By the time initialize is
> called it's too late. I could be wrong about this, but I've always
> made this assumption and I've never had any trouble posing.
>
> I don't understand, though, in any case why you've confused yourself
> by posing in the first place. If you want to subclass, subclass, and
> declare particular nib instances to be instances of the subclass, and
> test it that way; you can always change tactics and pose if you decide
> that's more efficient later on (i.e. because you want *every* instance
> of this class to be an instance of the subclass).
>
> Incidentally, it is unnecessary to declare inherited superclass
> functions in the @interface as you do above. The compiler knows about
> them already (because they are inherited). m.
>
> matt neuburg, phd = <email_removed>, http://www.tidbits.com/matt
> pantes anthropoi tou eidenai oregontai phusei
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