Binding NSArrayController to program
Binding NSArrayController to program
- Subject: Binding NSArrayController to program
- From: Hans van der Meer <email@hidden>
- Date: Mon, 11 Feb 2008 12:21:03 +0100
There is something I must misunderstand. The goal is to have an object
in the program reacting on some action from the gui by calculating new
rows for a tableview.
The calculating object has a property:
@property(copy) NSMutableArray *solutions;
which is given in IB to the NSArrayController as Model Key Path.
However, adding objects to this solutions variable does nothing in the
tableview coupled to the arraycontroller.
Things change when I give the added objects not to solutions but add
them with:
[solutionsController addObject:...]
The solutionsController being an IBOutlet coupled to the
arraycontroller. Now the objects added are becoming visible in the
table and can be found with [solutionsController arrangedObjects]. But
the solutions variable itself stays unaffected by the additions in
spite of the apparent binding to solutions.
I must conclude that the arraycontroller manages its own version of
the array, but what then is the solutions variable doing? I cannot
remove it or the program stops functioning. And what if I would like
to do the change on the solutions variable and propagate it to the
table instead of directly reaching into the arraycontroller?
I must admit being quite confused here.
Hans van der Meer
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