On Aug 22, 2008, at 20:45, Sam Krishna wrote:
OK, I've read all the email from the past month about Aaron's
challenge in Ch. 18 of Cocoa Programming. I've got a custom view
(OvalView) where the magic happens. I've got Undo working, but I
can't get the app to load a saved document b/c it keeps loading the
wrong instance of OvalView on unarchiving.
[snip]
Here's my Q: What do I need to do to fix it? Is there some simple
IB3 gestalt that I'm missing? Some NSCoding voodoo that's completely
obvious? what gives?
Well, if it was completely obvious, you wouldn't have missed it. ;)
What you're doing wrong is archiving your view (something that *draws*
an oval). What you really need to do is archive your data model
(something that *describes* an oval). That means you should keep the
oval description separate from the view, and let the view refer to the
separate description for the parameters it needs to draw the oval.
Write on the blackboard 100 times:
MVC
MVC
MVC
...
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