Package javafx.beans.property

Class LongProperty

java.lang.Object

javafx.beans.binding.NumberExpressionBase

javafx.beans.binding.LongExpression

javafx.beans.property.ReadOnlyLongProperty

javafx.beans.property.LongProperty

All Implemented Interfaces:

NumberExpression, Observable, Property<Number>, ReadOnlyProperty<Number>, ObservableLongValue, ObservableNumberValue, ObservableValue<Number>, WritableLongValue, WritableNumberValue, WritableValue<Number>

Direct Known Subclasses:

LongPropertyBase

public abstract class LongProperty
extends ReadOnlyLongProperty
implements Property<Number>, WritableLongValue

This class defines a Property wrapping a long value.

The value of a LongProperty can be get and set with ObservableLongValue.get(), LongExpression.getValue(), WritableLongValue.set(long), and setValue(Number).

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 LongProperty can be read with ReadOnlyProperty.getBean() and ReadOnlyProperty.getName().

Note: setting or binding this property to a null value will set the property to "0.0". See setValue(java.lang.Number).

Since:

JavaFX 2.0

See Also:

• ObservableLongValue
• WritableLongValue
• ReadOnlyLongProperty
• Property

Constructor Summary

Constructors

Constructor	Description
LongProperty()

Method Summary

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

Methods inherited from class javafx.beans.binding.LongExpression

doubleValue, floatValue, getValue, intValue, longExpression, longExpression, longValue

Methods inherited from class javafx.beans.binding.NumberExpressionBase

asString

Methods inherited from class java.lang.Object

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

Methods inherited from interface javafx.beans.Observable

addListener, removeListener

Methods inherited from interface javafx.beans.value.ObservableLongValue

get

Methods inherited from interface javafx.beans.value.ObservableValue

addListener, getValue, removeListener

Methods inherited from interface javafx.beans.property.Property

bind, isBound, unbind

Methods inherited from interface javafx.beans.property.ReadOnlyProperty

getBean, getName

Methods inherited from interface javafx.beans.value.WritableLongValue

get, set

Methods inherited from interface javafx.beans.value.WritableValue

getValue

Constructor Details

LongProperty

public LongProperty()

Method Details

setValue

public void setValue(Number v)

Set the wrapped value.

Specified by:

setValue in interface WritableLongValue

Specified by:

setValue in interface WritableValue<Number>

Parameters:

v - The new value

bindBidirectional

public void bindBidirectional(Property<Number> 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<Number>

Parameters:

other - the other Property

unbindBidirectional

public void unbindBidirectional(Property<Number> other)

Remove 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.bindBirectional(property2);
     property2.unbindBidirectional(property1);
 

Specified by:

unbindBidirectional in interface Property<Number>

Parameters:

other - the other Property

toString

public String toString()

Returns a string representation of this LongProperty object.

Overrides:

toString in class ReadOnlyLongProperty

Returns:

a string representation of this LongProperty object.