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Editorial Team
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Asked: 2026-05-22T18:50:50+00:00

I have a bit of code that I use to draw a border around

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I have a bit of code that I use to draw a border around a NSTextField when mousing over it, and while editing it, as well as to have it resize vertically when the user is typing. I want to use this code on an NSTokenFieldCell now. I’ve gotten it to work fine, and the implementation is identical for both NSTextField and NSTokenFieldCell. I was wondering if there was some way I could avoid the need to duplicate my code between the two class types. I believe NSTokenFieldCell is actually a subclass of NSTextField.

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1 Answer

  1. Editorial Team

    I ended up pulling all my custom functionality out into a separate NSObject class, and then gave both my NSTextField and NSTokenField classes an instance of it, then I just proxied all of the custom logic into my “logic” object using – (id)forwardingTargetForSelector:(SEL)aSelector

    It’s not perfect as I still need to manually proxy over the methods that I overrode such as drawRect in each class, but I’d say it falls into the “good enough” category now. I’m interested to see if anyone has a better solution I can try.

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