--- On Mon, 10/6/08, I. Savant <[EMAIL PROTECTED]> wrote:

  What of the "Graphics Bindings" example mmalc has on his examples
page? Here:

http://homepage.mac.com/mmalc/CocoaExamples/controllers.html
I am not sure what Mmalc was attempting in his example.  I looked at it again 
just now.It seems to me to be a very old example.  He uses the deprecated 
method + (void)setKeys:(NSArray *)keys 
triggerChangeNotificationsForDependentKey:(NSString *)dependentKey.I think that 
NSArrayController can do everything his GraphicsArrayController is doing 
without requiring any application specific code.I think Mmacl's implementation 
of GraphicsView is sub-optimal unless I am just not understanding what he was 
trying to do.Chapter 29, Controllers, in the forthcoming "Cocoa Design 
Patterns" book coincidentally implements a simple drawing program.  I wish I 
had thought to review Mmalc's example while I was writing.Chapter 29 takes the 
reader on a journey to discover why NSArrayController and other NSController 
classes exist.  The chapter starts with a simple problem, solves it, and the 
evolves the solution to be general and reusable. 
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