com.sun.javafx.binding

Class ExpressionHelper<T>

java.lang.Object

com.sun.javafx.binding.ExpressionHelperBase

com.sun.javafx.binding.ExpressionHelper<T>

public abstract class ExpressionHelper<T>
extends ExpressionHelperBase

A convenience class for creating implementations of ObservableValue. It contains all of the infrastructure support for value invalidation- and change event notification. This implementation can handle adding and removing listeners while the observers are being notified, but it is not thread-safe.

Field Summary

Fields

Modifier and Type	Field and Description
protected ObservableValue<T>	observable

Method Summary

Modifier and Type	Method and Description
protected abstract ExpressionHelper<T>	addListener(ChangeListener<? super T> listener)
static <T> ExpressionHelper<T>	addListener(ExpressionHelper<T> helper, ObservableValue<T> observable, ChangeListener<? super T> listener)
static <T> ExpressionHelper<T>	addListener(ExpressionHelper<T> helper, ObservableValue<T> observable, InvalidationListener listener)
protected abstract ExpressionHelper<T>	addListener(InvalidationListener listener)
protected abstract void	fireValueChangedEvent()
static <T> void	fireValueChangedEvent(ExpressionHelper<T> helper)
protected abstract ExpressionHelper<T>	removeListener(ChangeListener<? super T> listener)
static <T> ExpressionHelper<T>	removeListener(ExpressionHelper<T> helper, ChangeListener<? super T> listener)
static <T> ExpressionHelper<T>	removeListener(ExpressionHelper<T> helper, InvalidationListener listener)
protected abstract ExpressionHelper<T>	removeListener(InvalidationListener listener)

Methods inherited from class com.sun.javafx.binding.ExpressionHelperBase

trim

Methods inherited from class java.lang.Object

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

Field Detail

observable

protected final ObservableValue<T> observable

Method Detail

addListener

public static <T> ExpressionHelper<T> addListener(ExpressionHelper<T> helper,
                                                  ObservableValue<T> observable,
                                                  InvalidationListener listener)

removeListener

public static <T> ExpressionHelper<T> removeListener(ExpressionHelper<T> helper,
                                                     InvalidationListener listener)

addListener

public static <T> ExpressionHelper<T> addListener(ExpressionHelper<T> helper,
                                                  ObservableValue<T> observable,
                                                  ChangeListener<? super T> listener)

removeListener

public static <T> ExpressionHelper<T> removeListener(ExpressionHelper<T> helper,
                                                     ChangeListener<? super T> listener)

fireValueChangedEvent

public static <T> void fireValueChangedEvent(ExpressionHelper<T> helper)

addListener

protected abstract ExpressionHelper<T> addListener(InvalidationListener listener)

removeListener

protected abstract ExpressionHelper<T> removeListener(InvalidationListener listener)

addListener

protected abstract ExpressionHelper<T> addListener(ChangeListener<? super T> listener)

removeListener

protected abstract ExpressionHelper<T> removeListener(ChangeListener<? super T> listener)

fireValueChangedEvent

protected abstract void fireValueChangedEvent()