Sending message to parent object
Sending message to parent object
- Subject: Sending message to parent object
- From: Ashley Perrien <email@hidden>
- Date: Fri, 26 Dec 2008 10:11:20 -0600
I'm still relatively new to Cocoa (and programming in general) and
very new to iPhone but this is more of a general question I've been
struggling with.
What is the best / most accepted way to get a message out of an object?
Scenario 1:
I have a document application with an NSView that is basically a graph
of a subset of the data in the document. I'd like to bo able to drag
within the graph and have it change what data it's showing. How would
I send a message from the view to the document either telling it to
update the selection or to request new data? Delegate? Notification?
Singleton? Other?
Scenario 2:
iPhone app (extremely simple, one view) again with data and a graph of
that data. when interacting with the UIView, how do I tell the parent
view that something needs changing?
Basically, what's the most acceptable way for an ivar object to
communicate with it's parent?
Ashley Perrien
Random Quote of the day:
"If you understand what you're doing, you're not learning anything."
-Abraham Lincoln
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