Listener

interface Listener<T> : ValueChangeListener<Optional<T>, T>

Implemented by listeners to DeferredObservableProperty value changes.

Functions

valueDidChange
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open fun valueDidChange(oldValue: Optional<T>, newValue: T)
Listener method called after ObservableProperty or DeferredObservableProperty value changes.
valueWillChange
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open fun valueWillChange(oldValue: Optional<T>, newValue: T)
Listener method called before ObservableProperty or DeferredObservableProperty value changes.