Hi Brian,
This is currently a well-known limitation of MacRuby, we will address
it in the future. In the meantime, you might have to work-around it by
doing this extra check.
Laurent
On Feb 12, 2009, at 7:03 AM, Brian Marick wrote:
Is this a bug? I don't see anything quite like it in Trac.
I have a binding to a button's state property. Here's the binding:
@comboBox.bind 'enabled',
toObject: @button,
withKeyPath: 'state',
options: {
NSValueTransformerBindingOption =>
OffStateMeansTrueTransformer.alloc.init
}
At the point the binding is made, the state of the button is a
fixnum 0.
The value transformer is immediately called to set the starting
value. Here's the transformedValue code:
def transformedValue(state)
puts "state -> bool transforming #{state.inspect}"
# prints #<NSCFNumber:0x1022180>
# state.intValue is 0
Because of this, I have to cast the state before making comparisons:
case state.intValue
when NSOffState then true
when NSOnState then false
else
raise "The value to transform should be either NSOffState or
NSOnState."
end
If this is a bug, I'll write a testcase.
-----
Brian Marick, independent consultant
Mostly on agile methods with a testing slant
www.exampler.com, www.exampler.com/blog, www.twitter.com/marick
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