MapObservable

public class MapObservable<T, V> extends BaseObservable<T> implements Observer<T>(source)

An observable that wraps another observable and applies a mapper function to its content.

<T>

the type of the wrapped observable

<V>

the type of the mapped observable

Functions

public void addObserver(Observer<T> observer)

Add a new observer which is interested in updates about this value

public V get()

public boolean isValid()

A method to indicate whether an observer is still valid.

public Observable<V> map<V>(Function<T, V> mapper)

Create a new Observable which will always have the value of mapper.apply(get()) and reports on updates accordingly.

public void observeChange(T oldT, T newT)

Called when the state is changed.

public void whenChanged(Observer<T> observer)