Re: Checking facts on NSCell (e.g. in NSTableView)
Re: Checking facts on NSCell (e.g. in NSTableView)
- Subject: Re: Checking facts on NSCell (e.g. in NSTableView)
- From: "Kyle Sluder" <email@hidden>
- Date: Thu, 8 Jan 2009 04:20:05 -0500
On Thu, Jan 8, 2009 at 3:31 AM, Luke Evans <email@hidden> wrote:
> Am I wrong about this interpretation of what I'm reading?
Yes, take a look at -setObjectValue:. This point confused me for
ages. You can bind the cell's value to whatever object you like, and
in -setObjectValue: extract the relevant information into ivars for
later use.
> By way of further example, if you had a data model containing some objects
> that have, say, an NSColor property, and you want to paint a simple colour
> swatch in a custom cell, is there no simple way of binding the NSColor value
> to the cell and picking this up in the cell? Perhaps one has to resort to
> subclassing the control somehow to get richer forms of cell instantiation if
> this is needed???
There's no NSColorWellCell, unfortunately, or else this would be
already done for you. Instead, just subclass NSCell, override
-setObjectValue:, and implement -drawRect: appropriately. Make sure
to call -[NSTableColumn setDataCell:].
More info can be had at this old page (Google cache because it's no
longer on kupuk.com):
http://74.125.45.132/search?q=cache:QhibCjcx2f0J:kupuk.com/2007/10/08/custom-nscells-with-nsmanagedobjects/+nscell+bindings
--Kyle Sluder
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