Re: IB keeps changing my constraints when I resize the cell
Re: IB keeps changing my constraints when I resize the cell
- Subject: Re: IB keeps changing my constraints when I resize the cell
- From: Quincey Morris <email@hidden>
- Date: Sat, 15 Jun 2013 20:00:08 -0700
On Jun 15, 2013, at 19:31 , Rick Mann <email@hidden> wrote:
> There's a setting for "Automatic"…where does it get it from then?
AFAIK, it means the row height is set automatically based on the control size (small/medium/large).
> Also, is there no way, using bindings, and no delegate, to choose among multiple NSTableViewCell implementations? I thought the 2011 WWDC video said it was possible, but I didn't quite understand what it was referring to. Unfortunately, there's no straightforward pure-bindings example to look at.
There's no way within the design-time table view itself. If the table uses bindings and there's no delegate, the column identifier is used to choose the cell view to instantiate, which can be the design-time cell view or a view in its own registered nib, but can't be varied by row.
If you want to choose between cell views by row, you need to put each cell view in its own nib, register each nib with the table view under a unique identifier, then implement the 'tableView/outlineView:viewFor…' delegate method to decide which identifier to use. It's very easy to do -- all it needs is to invoke 'makeViewWithIdentifier…' with a suitable identifier.
BTW, it can be much harder to vary the row height based on the cell view. You'd either need to cache all possible cell view heights in advance, or have a mechanism to calculate the cell view heights before view instantiation, or some combination of the two approaches.
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