Module javafx.base

Package javafx.beans.property

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 javafx.beans.Observable

addListener, removeListener, subscribe

Methods declared in interface javafx.beans.value.ObservableValue

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

Methods declared in interface javafx.beans.property.ReadOnlyProperty

getBean, getName

Methods declared in interface javafx.beans.value.WritableValue

getValue, setValue

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