We’ve drawn and configured our views and are ready to work on the Controller layer of our application. Surprisingly, we’ll still be working with Interface Builder for much of this phase of development. Interface Builder is a powerful tool for storing Cocoa objects and specifying links between them. You have seen that IB keeps a placeholder for File’s Owner in the Nib window. We’re going to tell Interface Builder that the owner of this particular kind of Nib will be an object of class
MyDocument and what the structure of a
MyDocument is. We’ll also create additional objects to do most of the work in managing the data in our application.
Arrange the windows of Xcode and Interface ...