Hi Graham,
To try to isolate the issue, I created a "Refresh" button and
hooked it up to a refresh method in MyController. It just calls
"init" (as below). When the program runs and instantiates a
document that I open, debugging the init call shows the_document as
nil. But when I click "Refresh" to call init again, it shows
the_document as not nil and fileString is assigned correctly etc.
So perhaps it's a problem with the instantiation?
The ivar <the_document> won't be valid until at least -awakeFromNib
is called. That's the earliest point you can access it.
That did the trick. I moved the code (referring to the_document) to
run after/in awakeFromNib, rather than in the init method.
I think you're over-thinking this. Is MyController an object in the
nib?
Yes.
If so, connect <the_document> to File's Owner and you're done.
Already done.
By the time your document is ready to use, the controller will be
valid, exist, and be working.
It is working now.
Init time for any of these objects is too early - debugging in there
won't tell you much because at that time the nib hasn't been fully
loaded so none of the outlets will have been set.
That was the problem.
If on the other hand you're instantiating MyController in code
Nah, wasn't over-thinking ;-)
Thanks a lot Graham for your time and patience. I really appreciate
it. As I mentioned, this has been one repeating gap in my knowledge
(accessing one object's ivars or methods from another in the same
nib). I had seen the IBOutlet approach mentioned in forums, but
nothing really laid it out.
Tom
BareFeet
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