Re: Binding questions
Re: Binding questions
- Subject: Re: Binding questions
- From: mmalcolm crawford <email@hidden>
- Date: Wed, 10 Nov 2004 14:31:06 -0800
On Nov 10, 2004, at 1:40 PM, Scott Stevenson wrote:
1) I have table with a check box column bound with a
NSArrayController. I
also have a "Check All" button. Is it possible to bind it. If so,
what is
the best way of doing it?
Such a checkbox doesn't represent a single piece of data, so a binding
doesn't really make sense.
Umm, actually you can bind the value of a single check box to
[Controller].arrangedObjects.<checkAttribute> and when you click it it
will do the Right Thing.
It looks like by default it (the solo check box) doesn't show mixed
state, though, so you might have to wrestle with your conscience over
the aesthetics -- and perhaps file a bug report.
Attach it to an action that loops through your array of objects and
sets the checked state on each.
You can do this in one line with KVC:
[theArray setValue:aNumber forKey:@"<checkAttribute>"];
mmalc
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