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51

answers:

1
+1  Q: 

data reloading in NSOutlineView

Hi, simple existentialist question that google can't answer me:

When and NSOutlineView send the message outlineView:setObjectValue:forTableColumn:byItem: to its data source, will it always reload its data?

I have [sourceList reloadData]; as the last line of that method's implementation, but it doesn't seem to be necessary.

Cheers

+1  A: 

It shouldn't be necessary because it already has the new (user-entered) data for that row—if it didn't, it wouldn't be able to give it to you by sending you that message.

Peter Hosey  2010-02-21 13:34:33
but it still waits for confirmation before displaying it, right? If you don't write the method, the text the user entered wont show
lordsandwich  2010-02-21 17:06:49
The method doesn't return a confirmation; it returns `void`. The outline view may ask for the same column of the same row afterward (in case you substituted a different object instead of using the one it gave you), but it does not need to reload the full data.
Peter Hosey  2010-02-21 17:24:34

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