Validate cell, or request a cell update

[Werner Lehmann]

Ok - this means that in Cell.updateItem I would have to add a (weak?) 
listener to the item's state property. If the cell is reused for another 
item I would have to remove the old listener first. My only concern is 
that this will be done a lot when scrolling through the list. Thanks...

> If the data item isn't observable, then you need a way to manually poke it.

Basically I can only talk from the Cell to the item, not vice versa. 
Unless I would store the cell reference in the item, not a good idea. 
So if item state changes, it must be observable from the cell, in some way.

Werner

On 09.07.2013 19:28, Richard Bair wrote:
> I think this is different. The idea was that you would bind state on
> the cell to the item it is representing, so that it is automatically
> updated when needed and then there is no need to manually poke it. If
> the data item isn't observable, then you need a way to manually poke
> it.