I want a button to be enabled when myTextField is not empty.
Can have an outlet in my controller called myTextField, and then set the
"Enabled" binding on the button to point to myTextField.stringValue.length,
then can I write a transformer called GreaterThanZero to return boolean if the
input is greater than zero?
Is that a valid way to go about this problem? It doesn't seem to be working for
me. I wrote a myTextField accessor to see what is happening and it doesn't even
seem to get called.
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