Hi all,
I have a very common UI layout: a Master/Detail view. The Master is a
NSTableView bound via a NSArrayController to a NSMutableArray, with buttons for
Add and Remove whose Target/Action is the NSArrayController's add and remove
actions. The Detail box displays attributes of the NSArrayController's current
selection. Like I said, a pretty common setup.
I want to intercept the "add" action to fill in default information for the
newly added item. I can't do this in the model's initializer because each
item's default information will be computed based on all the prior information
in the NSMutableArray. It belongs in the controller and not in the model. Is
this an appropriate time to subclass NSArrayController? Is there a more elegant
way to do it? Most of what I have read about subclassing says that you
shouldn't do it. :)
Thanks,
Soong
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