Re: When are bound variables initialized?

FROM : Kevin Ballard
DATE : Tue Apr 12 21:34:36 2005

I assume you're setting a value for selectedXAxisValue yourself, yes? 
There are two potential solutions:

1) Instead of setting it directly, use your setter method. This will 
notify the bound object to update itself

2) Use [self willChangeValueForKey:@"selectedXAxisValue"] right 
before setting it manually and [self 
didChangeValueForKey:@"selectedXAxisValue"] right after setting it. 
This has the same effect as solution #1.

On Apr 12, 2005, at 2:34 PM, Michael Lutz wrote:

> in one NIB I have two windows: One main and one Chart window. Those 
> two windows are controlled by one 'AppController' class. The Chart 
> window has two radio buttons on it, where the selectedValue is 
> bound to  NSMutableString    *selectedXAxisValue. When I show the 
> Chart window the first time selectedValue is nil and none of the 
> buttons is selected.
> So my question is: When is selectedValue initialized the first time 
> and how can I initialize it up-front (so one button is selected)?


--
Kevin Ballard
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