Hi All,
If you are using Scala for your code then you are obliged to write
listeners in the following way:
printButton.getButtonPressListeners.add(new ButtonPressListener {
override def buttonPressed(b: Button) {
print
}
})
I've tried to simplify this by defining the following method:
def pressedDo (aB: PushButton, action: Unit) = {
aB.getButtonPressListeners.add(new ButtonPressListener {
override def buttonPressed(b: PushButton) { action }})
}
and than invoking the method in this way (example)
pressedDo(printButton, print)
however, this results in a compiler error:
error: object creation impossible, since method buttonPressed in trait
ButtonPressListener of type (x$1: org.apache.pivot.wtk.Button)Unit is not
defined
aB.getButtonPressListeners.add(new ButtonPressListener {
I'm not a programming language specialist, and in addition a Scala
novice, but I'm puzzled why putting boilerplate code in a separate
method is not working??
Best regards,
Bojan
*Dr. Bojan Vučinić *
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