javafx.beans.binding

Class BooleanExpression

java.lang.Object

javafx.beans.binding.BooleanExpression

All Implemented Interfaces:

Observable, ObservableBooleanValue, ObservableValue<java.lang.Boolean>

Direct Known Subclasses:

BooleanBinding, ReadOnlyBooleanProperty

public abstract class BooleanExpression
extends java.lang.Object
implements ObservableBooleanValue

A BooleanExpression is a ObservableBooleanValue plus additional convenience methods to generate bindings in a fluent style.

A concrete sub-class of BooleanExpression has to implement the method ObservableBooleanValue.get(), which provides the actual value of this expression.

Constructor Summary

Constructors

Constructor and Description
BooleanExpression()

Method Summary

Methods

Modifier and Type	Method and Description
BooleanBinding	and(ObservableBooleanValue other) Creates a new BooleanExpression that performs the conditional AND-operation on this BooleanExpression and a ObservableBooleanValue.
StringBinding	asString() Creates a StringBinding that holds the value of the BooleanExpression turned into a String.
static BooleanExpression	booleanExpression(ObservableBooleanValue value) Returns a BooleanExpression that wraps a ObservableBooleanValue.
java.lang.Boolean	getValue() Returns the current value of this ObservableValue
BooleanBinding	isEqualTo(ObservableBooleanValue other) Creates a new BooleanExpression that holds true if this and another ObservableBooleanValue are equal.
BooleanBinding	isNotEqualTo(ObservableBooleanValue other) Creates a new BooleanExpression that holds true if this and another ObservableBooleanValue are equal.
BooleanBinding	not() Creates a new BooleanExpression that calculates the negation of this BooleanExpression.
BooleanBinding	or(ObservableBooleanValue other) Creates a new BooleanExpression that performs the conditional OR-operation on this BooleanExpression and a ObservableBooleanValue.

Methods inherited from class java.lang.Object

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

Methods inherited from interface javafx.beans.value.ObservableBooleanValue

get

Methods inherited from interface javafx.beans.value.ObservableValue

addListener, removeListener

Methods inherited from interface javafx.beans.Observable

addListener, removeListener

Constructor Detail

BooleanExpression

public BooleanExpression()

Method Detail

getValue

public java.lang.Boolean getValue()

Description copied from interface: ObservableValue

Returns the current value of this ObservableValue

Specified by:

getValue in interface ObservableValue<java.lang.Boolean>

Returns:

The current value

booleanExpression

public static BooleanExpression booleanExpression(ObservableBooleanValue value)

Returns a BooleanExpression that wraps a ObservableBooleanValue. If the ObservableBooleanValue is already a BooleanExpression, it will be returned. Otherwise a new BooleanBinding is created that is bound to the ObservableBooleanValue.

Parameters:

value - The source ObservableBooleanValue

Returns:

A BooleanExpression that wraps the ObservableBooleanValue if necessary

Throws:

java.lang.NullPointerException - if value is null

and

public BooleanBinding and(ObservableBooleanValue other)

Creates a new BooleanExpression that performs the conditional AND-operation on this BooleanExpression and a ObservableBooleanValue.

Parameters:

other - the other ObservableBooleanValue

Returns:

the new BooleanExpression

Throws:

java.lang.NullPointerException - if other is null

or

public BooleanBinding or(ObservableBooleanValue other)

Creates a new BooleanExpression that performs the conditional OR-operation on this BooleanExpression and a ObservableBooleanValue.

Parameters:

other - the other ObservableBooleanValue

Returns:

the new BooleanExpression

Throws:

java.lang.NullPointerException - if other is null

not

public BooleanBinding not()

Creates a new BooleanExpression that calculates the negation of this BooleanExpression.

Returns:

the new BooleanExpression

isEqualTo

public BooleanBinding isEqualTo(ObservableBooleanValue other)

Creates a new BooleanExpression that holds true if this and another ObservableBooleanValue are equal.

Parameters:

other - the other ObservableBooleanValue

Returns:

the new BooleanExpression

Throws:

java.lang.NullPointerException - if other is null

isNotEqualTo

public BooleanBinding isNotEqualTo(ObservableBooleanValue other)

Creates a new BooleanExpression that holds true if this and another ObservableBooleanValue are equal.

Parameters:

other - the other ObservableBooleanValue

Returns:

the new BooleanExpression

Throws:

java.lang.NullPointerException - if other is null

asString

public StringBinding asString()

Creates a StringBinding that holds the value of the BooleanExpression turned into a String. If the value of this BooleanExpression changes, the value of the StringBinding will be updated automatically.

Returns:

the new StringBinding