Re: NSButtonCell columns in NSOutlineView
Re: NSButtonCell columns in NSOutlineView
- Subject: Re: NSButtonCell columns in NSOutlineView
- From: Marcus Roberts <email@hidden>
- Date: Mon, 15 Aug 2005 21:12:47 +0100
On 8/15/05, Corbin Dunn <email@hidden> wrote:
> > The problem is I can't bind the same values here as I can in the
> > normal bindings - an error is returned that an NSControllerTreeProxy
> > object is not key value coding-compliant for the key selected.
>
> I gave this a try (in Tiger) and it seems to work correctly. However,
> it won't work the way you expect it to. One cell is shared for each
> table column. Therefore, binding anything to it will always display
> the same value in every column of that cell. Hopefully that makes
> sense -- if not, let me know and i can explain further.
That makes perfect sense - when I added another binding, I saw exactly
that happen.
>
> To do what you want, you will probably have to handle the
> willDisplayCell: delegate method for tableview and setup the cell
> each time before it is being displayed by accessing your array
> controller (in code).
Thanks for the pointer. I've implemented a delegate that works now,
which is great!
My only worry is that I'm using the observedObject method on the
_NSArrayControllerTreeNode item that's passed in. I gather that this
is a private method that could break in the future - is there a better
way of getting the current item when using an NSTreeController?
Thanks again for your help.
Marcus
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