Well, according to the documentation, an NSButtonCell's object value
(and all interpretations thereof) correspond to the state of the
button (on, off, or mixed). You want to set this as well as set the
title of the button. Unlike NSBrowser, NSOutlineView's data source
methods don't provide direct access to the cell, it only asks you for
the object value.
It's a bit of a pain, but if you want the button state AND the title
of the button to be affected by object value, you could subclass
NSButtonCell and override -setObjectValue:. THEN, in the datasource
methods, you could pass a dictionary containing an int and a string.
Then do this:
- (void)setObjectValue:(id)object {
[super setObjectValue:[object valueForKey:@"buttonState"]];
[self setTitle:[object valueForKey:@"buttonTitle"]];
}
Getting controls to USE your custom cell can be icky (NSBrowser ack!),
but I don't have much experience with NSOutlineView. If you have
trouble with that, just reply and ask on the list. You should be able
to just call -setCellClass:[MyCustomCell class] on your outline view.
On Jul 27, 2009, at 4:17 PM, Korei Klein wrote:
I'm implementing an NSOutlineViewDataSource object which will be the
data source of an NSOutlineView.
The NSOutlineView displays its data in NSButtonCell s.
The value displayed in an NSButtonCell is both an integer, and a
string.
The delegate method which I am implementing
outlineView:objectValueForTableColumn:byItem, however, allows me to
return only one value to the NSOutlineView.
Is it possible for my implementation of
outlineView:objectValueForTableColumn:byItem to set both the string
value and the integer value of the NSButtonCell?
Also, how do I determine the index of the column which is the second
argument of outlineView:objectValueForTableColumn:byItem.
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