Re: Binding NSArrayController to program
Re: Binding NSArrayController to program
- Subject: Re: Binding NSArrayController to program
- From: Hans van der Meer <email@hidden>
- Date: Tue, 12 Feb 2008 13:05:33 +0100
On 11 feb 2008, at 13:27, Hank Heijink wrote:
You did bind the array to the Model Key Path of the Content Array,
right?
That's it! I did bind to the "Editable" section and not to the
"Content Array" section.
Now it works, iff I also use the KVC methods for setting and changing
the bound variable.
One more question. I get quite confused by all the possibilities in
the bindings section in Interface Builder. The bindings guide gives
only a few examples. I could could not find a full description of the
meaning of all the subpanels. Possibly there is. Can someone point me
to it? Thanks.
That should work, and you shouldn't have to reach directly into the
controller to add/remove objects. Is there anything special about
how you add objects directly to your solutions array?
Hank
On Feb 11, 2008, at 6:21 AM, Hans van der Meer wrote:
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
Hank Heijink
email@hidden
Hans van der Meer
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