Re: [Rubycocoa-talk] problems with NSOutlineView and DataSource mixed with Bindings

[Patrick G. <pge...@wa...>]

> For the longest time, I couldn't get the NSOutlineView to  
> acknowledge the @root object at all. Even though this same code  
> worked previously without bindings.
> I have no idea why the FaultTreeDisplayNode is being sent the  
> copyWithZone selector nor have I ever seen anything that requires  
> you to do so for either Bindings or DataSources.

When updating values, Bindings try to call setObjectValue on your  
cell. If that doesn't work, next step is trying to copy the object  
with copyWithZone.

In a ruby project I added this …

class ItemTableViewCell < NSTextFieldCell
	def setObjectValue(obj)
		@item = obj
	end

… then used @item's contents in drawInteriorWithFrame_inView to draw  
the cell. If you don't draw yourself, just define a new cell class and  
add that setObjectValue implementation.

-Patrick