Module javafx.base

Package javafx.beans.property

Class ObjectProperty<T>

java.lang.Object

javafx.beans.binding.ObjectExpression<T>

javafx.beans.property.ReadOnlyObjectProperty<T>

javafx.beans.property.ObjectProperty<T>

Type Parameters:

T - the type of the wrapped Object

All Implemented Interfaces:

Observable, Property<T>, ReadOnlyProperty<T>, ObservableObjectValue<T>, ObservableValue<T>, WritableObjectValue<T>, WritableValue<T>

Direct Known Subclasses:

JavaBeanObjectProperty, ObjectPropertyBase

public abstract class ObjectProperty<T>
extends ReadOnlyObjectProperty<T>
implements Property<T>, WritableObjectValue<T>

This class provides a full implementation of a Property wrapping an arbitrary Object. The value of a ObjectProperty can be get and set with ObservableObjectValue.get(), ObjectExpression.getValue(), WritableObjectValue.set(Object), and setValue(Object). A property can be bound and unbound unidirectional with Property.bind(ObservableValue) and Property.unbind(). Bidirectional bindings can be created and removed with bindBidirectional(Property) and unbindBidirectional(Property). The context of a ObjectProperty can be read with ReadOnlyProperty.getBean() and ReadOnlyProperty.getName(). For specialized implementations for ObservableList, ObservableSet and ObservableMap that also report changes inside the collections, see ListProperty, SetProperty and MapProperty, respectively.

Since:

JavaFX 2.0

See Also:

• ObservableObjectValue
• WritableObjectValue
• ReadOnlyObjectProperty
• Property

Constructor Summary

Constructors

Constructor	Description
ObjectProperty()	Creates a default ObjectProperty.

Method Summary

Modifier and Type	Method	Description
void	bindBidirectional(Property<T> other)	Create a bidirectional binding between this Property and another one.
void	setValue(T v)	Set the wrapped value.
String	toString()	Returns a string representation of this ObjectProperty object.
void	unbindBidirectional(Property<T> other)	Removes a bidirectional binding between this Property and another one.

Methods declared in class javafx.beans.binding.ObjectExpression

asString, asString, asString, getValue, isEqualTo, isEqualTo, isNotEqualTo, isNotEqualTo, isNotNull, isNull, objectExpression

Methods declared in class java.lang.Object

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

Methods declared in interface javafx.beans.Observable

addListener, removeListener

Methods declared in interface javafx.beans.value.ObservableObjectValue

get

Methods declared in interface javafx.beans.value.ObservableValue

addListener, flatMap, getValue, map, orElse, removeListener

Methods declared in interface javafx.beans.property.Property

bind, isBound, unbind

Methods declared in interface javafx.beans.property.ReadOnlyProperty

getBean, getName

Methods declared in interface javafx.beans.value.WritableObjectValue

get, set

Methods declared in interface javafx.beans.value.WritableValue

getValue

Constructor Details

ObjectProperty

public ObjectProperty()

Creates a default ObjectProperty.

Method Details

setValue

public void setValue(T v)

Set the wrapped value.

Specified by:

setValue in interface WritableValue<T>

Parameters:

v - The new value

bindBidirectional

public 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.

Specified by:

bindBidirectional in interface Property<T>

Parameters:

other - the other Property

unbindBidirectional

public 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);
 

Specified by:

unbindBidirectional in interface Property<T>

Parameters:

other - the other Property

toString

public String toString()

Returns a string representation of this ObjectProperty object.

Overrides:

toString in class ReadOnlyObjectProperty<T>

Returns:

a string representation of this ObjectProperty object.