Bindings Trap?
Bindings Trap?
- Subject: Bindings Trap?
- From: August Trometer <email@hidden>
- Date: Thu, 18 Nov 2004 06:46:06 -0500
Because I'm still new to Cocoa, I'm still very much in learning mode,
and right now I'm grappling with bindings. I have successfully set up
my array controllers and their dependencies, and everything works just
fine. In fact, I love a lot of the power that bindings give me.
The problem, however, is making custom changes to my tables.
For example, I have a table that most items will have an NSButtonCell
which is a checkbox. Several items, however, should _not_ have a
button, but rather an NSImageCell. In former experiments, I've gotten
this to work by using table delegate methods, specifically
tableView:objectValueForTableColumn:row:. With bindings, it seems that
this is not possible. I can't get this method to respond, either in
it's own custom NSTableView class or in the my main contoller.m. And I
have double-checked to make sure the delegate for the table is
specified properly.
I've also tried to set up a method in my datasource object class which
returns either a NSButtonCell or an NSImageCell depending on the
object, but I can't seem to get the bindings to read it properly. For
example, I'll set the value of the cell to the custom method, but it
ignores the return.
Is there a way around this that I'm missing, or is this sort of a
bindings trap?
Thanks!
August
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