Package dev.webfx.kit.util.properties.conversion

Class ConvertedObservableValue<A,B>

java.lang.Object

dev.webfx.kit.util.properties.conversion.ConvertedObservableValue<A,B>

All Implemented Interfaces:

Observable, ObservableValue<A>

Direct Known Subclasses:

ConvertedProperty

public class ConvertedObservableValue<A,B>
extends Object
implements ObservableValue<A>

Author:

Bruno Salmon

Field Summary

Fields

Modifier and Type	Field	Description
protected final dev.webfx.platform.util.function.Converter<B,A>	bToAConverter
protected final ObservableValue<B>	observableValue

Constructor Summary

Constructors

Constructor	Description
ConvertedObservableValue(ObservableValue<B> observableValue, dev.webfx.platform.util.function.Converter<B,A> bToAConverter)

Method Summary

Modifier and Type	Method	Description
void	addListener(InvalidationListener listener)	Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
void	addListener(ChangeListener<? super A> listener)	Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes.
A	getValue()	Returns the current value of this ObservableValue
void	removeListener(InvalidationListener listener)	Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
void	removeListener(ChangeListener<? super A> listener)	Removes the given listener from the list of listeners, that are notified whenever the value of the ObservableValue changes.

Methods inherited from class java.lang.Object

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

Field Details

observableValue

protected final ObservableValue<B> observableValue

bToAConverter

protected final dev.webfx.platform.util.function.Converter<B,A> bToAConverter

Constructor Details

ConvertedObservableValue

public ConvertedObservableValue(ObservableValue<B> observableValue,
 dev.webfx.platform.util.function.Converter<B,A> bToAConverter)

Method Details

addListener

public void addListener(ChangeListener<? super A> listener)

Description copied from interface: ObservableValue

Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.

Note that the same actual ChangeListener instance may be safely registered for different ObservableValues.

The ObservableValue stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakChangeListener avoid this situation.

Specified by:

addListener in interface ObservableValue<A>

Parameters:

listener - The listener to register

See Also:

• ObservableValue.removeListener(ChangeListener)

removeListener

public void removeListener(ChangeListener<? super A> listener)

Description copied from interface: ObservableValue

Removes the given listener from the list of listeners, that are notified whenever the value of the ObservableValue changes.

If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.

Specified by:

removeListener in interface ObservableValue<A>

Parameters:

listener - The listener to remove

See Also:

• ObservableValue.addListener(ChangeListener)

getValue

public A getValue()

Description copied from interface: ObservableValue

Returns the current value of this ObservableValue

Specified by:

getValue in interface ObservableValue<A>

Returns:

The current value

addListener

public void addListener(InvalidationListener listener)

Description copied from interface: Observable

Adds an InvalidationListener which will be notified whenever the Observable becomes invalid. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.

Note that the same actual InvalidationListener instance may be safely registered for different Observables.

The Observable stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakInvalidationListener avoid this situation.

Specified by:

addListener in interface Observable

Parameters:

listener - The listener to register

See Also:

• Observable.removeListener(InvalidationListener)

removeListener

public void removeListener(InvalidationListener listener)

Description copied from interface: Observable

Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.

If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.

Specified by:

removeListener in interface Observable

Parameters:

listener - The listener to remove

See Also:

• Observable.addListener(InvalidationListener)