Interface Property<T>

Type Parameters:

T - the type of the wrapped value

All Superinterfaces:

Observable, ObservableValue<T>, ReadOnlyProperty<T>, WritableValue<T>

All Known Subinterfaces:

JavaBeanProperty<T>

All Known Implementing Classes:

BooleanProperty, BooleanPropertyBase, DoubleProperty, DoublePropertyBase, FloatProperty, FloatPropertyBase, IntegerProperty, IntegerPropertyBase, JavaBeanBooleanProperty, JavaBeanDoubleProperty, JavaBeanFloatProperty, JavaBeanIntegerProperty, JavaBeanLongProperty, JavaBeanObjectProperty, JavaBeanStringProperty, ListProperty, ListPropertyBase, LongProperty, LongPropertyBase, MapProperty, MapPropertyBase, ObjectProperty, ObjectPropertyBase, ReadOnlyBooleanWrapper, ReadOnlyDoubleWrapper, ReadOnlyFloatWrapper, ReadOnlyIntegerWrapper, ReadOnlyListWrapper, ReadOnlyLongWrapper, ReadOnlyMapWrapper, ReadOnlyObjectWrapper, ReadOnlySetWrapper, ReadOnlyStringWrapper, SetProperty, SetPropertyBase, SimpleBooleanProperty, SimpleDoubleProperty, SimpleFloatProperty, SimpleIntegerProperty, SimpleListProperty, SimpleLongProperty, SimpleMapProperty, SimpleObjectProperty, SimpleSetProperty, SimpleStringProperty, SimpleStyleableBooleanProperty, SimpleStyleableDoubleProperty, SimpleStyleableFloatProperty, SimpleStyleableIntegerProperty, SimpleStyleableLongProperty, SimpleStyleableObjectProperty, SimpleStyleableStringProperty, StringProperty, StringPropertyBase, StyleableBooleanProperty, StyleableDoubleProperty, StyleableFloatProperty, StyleableIntegerProperty, StyleableLongProperty, StyleableObjectProperty, StyleableStringProperty

public interface Property<T>
extends ReadOnlyProperty<T>, WritableValue<T>

Generic interface that defines the methods common to all (writable) properties, independent of their type.

Since:

JavaFX 2.0

Method Summary

Modifier and Type	Method	Description
void	bind(ObservableValue<? extends T> observable)	Create a unidirection binding for this Property.
void	bindBidirectional(Property<T> other)	Create a bidirectional binding between this Property and another one.
boolean	isBound()	Can be used to check, if a Property is bound.
void	unbind()	Remove the unidirectional binding for this Property.
void	unbindBidirectional(Property<T> other)	Removes a bidirectional binding between this Property and another one.

Methods declared in interface Observable

addListener, removeListener, subscribe

Modifier and Type	Method	Description
void	addListener(InvalidationListener listener)	Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
void	removeListener(InvalidationListener listener)	Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
default Subscription	subscribe(Runnable invalidationSubscriber)	Creates a Subscription on this Observable which calls invalidationSubscriber whenever it becomes invalid.

Methods declared in interface ObservableValue

addListener, flatMap, getValue, map, orElse, removeListener, subscribe, subscribe, when

Modifier and Type	Method	Description
void	addListener(ChangeListener<? super T> listener)	Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes.
default <U> ObservableValue<U>	flatMap(Function<? super T, ? extends ObservableValue<? extends U>> mapper)	Returns an ObservableValue that holds the value of an ObservableValue produced by applying the given mapping function on this value.
T	getValue()	Returns the current value of this ObservableValue
default <U> ObservableValue<U>	map(Function<? super T, ? extends U> mapper)	Returns an ObservableValue that holds the result of applying the given mapping function on this value.
default ObservableValue<T>	orElse(T constant)	Returns an ObservableValue that holds this value, or the given constant if it is null.
void	removeListener(ChangeListener<? super T> listener)	Removes the given listener from the list of listeners that are notified whenever the value of the ObservableValue changes.
default Subscription	subscribe(BiConsumer<? super T, ? super T> changeSubscriber)	Creates a Subscription on this ObservableValue which calls the given changeSubscriber with the old and new value whenever its value changes.
default Subscription	subscribe(Consumer<? super T> valueSubscriber)	Creates a Subscription on this ObservableValue which immediately provides the current value to the given valueSubscriber, followed by any subsequent values whenever its value changes.
default ObservableValue<T>	when(ObservableValue<Boolean> condition)	Returns an ObservableValue that holds this value and is updated only when condition holds true.

Methods declared in interface ReadOnlyProperty

getBean, getName

Modifier and Type	Method	Description
Object	getBean()	Returns the Object that contains this property.
String	getName()	Returns the name of this property.

Methods declared in interface WritableValue

getValue, setValue

Modifier and Type	Method	Description
T	getValue()	Get the wrapped value.
void	setValue(T value)	Set the wrapped value.

Method Details

bind

void bind(ObservableValue<? extends T> observable)

Create a unidirection binding for this Property.

Note that JavaFX has all the bind calls implemented through weak listeners. This means the bound property can be garbage collected and stopped from being updated.

Parameters:

observable - The observable this Property should be bound to.

Throws:

NullPointerException - if observable is null

unbind

void unbind()

Remove the unidirectional binding for this Property. If the Property is not bound, calling this method has no effect.

See Also:

• bind(javafx.beans.value.ObservableValue)

isBound

boolean isBound()

Can be used to check, if a Property is bound.

Returns:

true if the Property is bound, false otherwise

See Also:

• bind(javafx.beans.value.ObservableValue)

bindBidirectional

void bindBidirectional(Property<T> other)

Create a bidirectional binding between this Property and another one. Bidirectional bindings exists independently of unidirectional bindings. So it is possible to add unidirectional binding to a property with bidirectional binding and vice-versa. However, this practice is discouraged.

It is possible to have multiple bidirectional bindings of one Property.

JavaFX bidirectional binding implementation use weak listeners. This means bidirectional binding does not prevent properties from being garbage collected.

Parameters:

other - the other Property

Throws:

NullPointerException - if other is null

IllegalArgumentException - if other is this

unbindBidirectional

void unbindBidirectional(Property<T> other)

Removes a bidirectional binding between this Property and another one. If no bidirectional binding between the properties exists, calling this method has no effect. It is possible to unbind by a call on the second property. This code will work:

    property1.bindBidirectional(property2);
    property2.unbindBidirectional(property1);

Parameters:

other - the other Property

Throws:

NullPointerException - if other is null

IllegalArgumentException - if other is this