NSArrayController

[Christiaan Hofman]

On 19 Oct 2007, at 8:19 PM, Anthony B Arthur wrote:

> I sent this yesterday but did not see it come through.....
>
> My apologies if this has already been answered.  I am trying to  
> properly bind an NSTableView to a NSArrayController.  The tableView  
> has 3 columns, 2 of which use popup button cells as its data  
> cells.  It is these 2 columns that I am having trouble properly  
> binding.  The controller has an array of objects set as its  
> content.  I have entered keys to this content on the controller in  
> its inspector.  Each object in the content array has a list of  
> strings that should display in the popup buttons.  I am not using a  
> model, didn't really feel I needed to go through all that.  So in  
> IB there are bindings for the column and bindings for the popup  
> cell.  It is unclear which of the two I should bind, one or the  
> other or both, and exactly which binding aspects and controller  
> keys I should bind to.  Attempts to bind to the popup cell bindings  
> causes errors while binding to the column alone looks better, but  
> the popups are empty.  Is there anyone who can offer some explanation.
>
> Many Thanks,
>
> --Brian
>

You should bind the column, not the cell. You bind either  
contentValues, or the triple content + contentObjects + contentValues  
(in case the displayed values are not the same as the represented  
objects). You should bind to an array, which could be through the  
arrangedObjects of some arrayController, or directly to an array key  
of the controller object (in particular if it is a fixed array).  
Alternatively, you can bind to an array key of the objects you're  
displaying. In this case you bind to the same arrayController as the  
displayed/selected objects (but then these objects of course need to  
contain this array). This allows you to use varying sets of values in  
the different popups. But I guess you don't need this complexity.

Christiaan