Package net.apartium.cocoabeans.state

Class LazyWatcher<T>

java.lang.Object

net.apartium.cocoabeans.state.LazyWatcher<T>

Type Parameters:

T - T as type

All Implemented Interfaces:

Observer

@AvailableSince("0.0.41")
public class LazyWatcher<T>
extends Object
implements Observer

Watcher implementation that contains the last manually updated value. Updating the value occurs through the getOrUpdate() method

Method Summary

Modifier and Type	Method	Description
static <T> LazyWatcher<T>	create(Observable<T> observable)
void	delete()
void	flagAsDirty(Observable<?> observable)	Flag listener as dirty
T	getLastValue()	Get the value applied from last getOrUpdate() call.
net.apartium.cocoabeans.structs.Entry<T,Boolean>	getOrUpdate()	If the current watcher is dirty, update it if necessary, then return the new value.
Observable<T>	getWatchedObservable()
boolean	isDirty()
void	setDependsOn(Observable<T> dependsOn)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

create

public static <T> LazyWatcher<T> create(Observable<T> observable)

flagAsDirty

public void flagAsDirty(Observable<?> observable)

Description copied from interface: Observer

Flag listener as dirty

Specified by:

flagAsDirty in interface Observer

Parameters:

observable - marking observable

setDependsOn

public void setDependsOn(Observable<T> dependsOn)

isDirty

public boolean isDirty()

getLastValue

public T getLastValue()

Get the value applied from last getOrUpdate() call.

Returns:

last applied value

getOrUpdate

public net.apartium.cocoabeans.structs.Entry<T,Boolean> getOrUpdate()

If the current watcher is dirty, update it if necessary, then return the new value.

Returns:

entry containing the up-to-date value (key) and if it was changed since previous call (value).

delete

public void delete()

getWatchedObservable

public Observable<T> getWatchedObservable()