Re: NSMutableAttributedString binding

FROM : Jonathan Dann
DATE : Thu Jan 10 19:23:03 2008

> I have binded the a NSTextView to an NSAttributedString. This works
> fine when I set the binded variable, the NSTextView is showing the
> text fine.
> But if I make a change in the variable, this is not reflected in the
> NSTextView.
> I am doing this:
>
> [[self attributedText] replaceCharactersInRange:elementRange
> withString:[te c]];
>
>
> and the NSTextView which is binded to attributedText does never show
> the change.
> If I do an NSLog of this variable immediately following the above
> line, I can see the change.
>
> What should I do to get the NSTextView to show the change?



Even though your text view is bound to the NSMutableAttributedString, 
I'm not sure that the method you give is KVO-compliant.

You may need [self setAttributedText:[[self attributedText] 
replaceCharactersInRange:elementRangeWithString:[te c]]];

This is what the binding mechanism is looking for so it knows to 
update your field, you have to update our model programmatically with 
a setter or another KVO-compliant method.

As always, tell me if I'm wrong!

Jonathan