On 2009 May 20, at 05:56, Graham Cox wrote:
Ah, I should have made it clearer that all of A, B C and D are in the framework, and the additional functionality belongs to an app which includes the framework. The class relationships between A and B, C, D are already established in the framework and can't be changed. Adding the app functionality to the framework doesn't make sense, as the additional code is very esoteric while the framework is general purpose.
I still say, use a delegate. Think of a delegate as a general-purpose ivar. Lots of Cocoa classes have delegates that I don't always use. A delegate is not ugly. Just hold your nose if necessary, add a delegate and move on.
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