I'm having difficulty working with bindings and I'm not sure if it's a
MacRuby thing or my poor understanding of how they work.
I've tried binding to two types of things - an NSMatrix of radio
buttons (binding to "selectedTag") and a Checkbox value.
Using just an attr_accessor - the variable changes when the user
changes them, but changing the variable doesn't update in the UI.
So I added an explicit setter method and to change the variable, I use
self.setVideoSource(VID_USE_S2) to modify it.
This works to change it on-screen, but now UI changes aren't getting
through to the variables properly. The NSMatrix variable isn't
changing, and the other variables are changing but are no longer
Boolean. (If I do a "p x" I get either #<NSCFBoolean:0xa07f13f8> or
#<NSCFBoolean:0xa07f1400>.
I tried replacing 'attr_accessor' with 'attr_reader', and adding an
explicit getter. That results in the following when I run (even if I
add a 'return nil' to my setter method):
[4169:10b] KVO autonotifying only supports -set<Key>: methods that
return void. Autonotifying will not be done for invocations of -
[MainWinController setVideoSource:].
I haven't yet tried manual notification because I'm not likely to use
bindings for this case if that much work is required. Is this the
expected way to go, or am I missing something here?
Here's a bit of the code (these are set as keys in IB). When used
elsewhere, I just have them as the instance variable :
attr_accessor :audioIncludeS1 # whether to include audio
attr_accessor :audioIncludeS2 # for a particular channel
attr_accessor :videoSource # which source to use (if any)
for video
def setAudioIncludeS1(value)
@audioIncludeS1 = value
end
def setAudioIncludeS2(value)
@audioIncludeS2 = value
end
def setVideoSource(value)
case value
when VID_USE_S1
@videoSource = VID_USE_S1
when VID_USE_S2
@videoSource = VID_USE_S2
when VID_USE_NONE
@videoSource = VID_USE_NONE
else
@videoSource = VID_USE_NONE
end
end
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