Class DoubleProperty

public abstract class DoubleProperty
extends ReadOnlyDoubleProperty
implements Property<Number>, WritableDoubleValue

• Constructor Summary

  Constructors

  Constructor and Description
  DoubleProperty()

• Method Summary

  All MethodsStatic MethodsInstance MethodsConcrete Methods

  Modifier and Type	Method and Description
  ObjectProperty<Double>	asObject() Creates an ObjectProperty that bidirectionally bound to this DoubleProperty.
  void	bindBidirectional(Property<Number> other) Create a bidirectional binding between this Property and another one.
  static DoubleProperty	doubleProperty(Property<Double> property) Returns a DoubleProperty that wraps a Property and is bidirectionally bound to it.
  void	setValue(Number v) Set the wrapped value.
  String	toString() Returns a string representation of this DoubleProperty object.
  void	unbindBidirectional(Property<Number> other) Remove a bidirectional binding between this Property and another one.

  • Methods inherited from class javafx.beans.property.ReadOnlyDoubleProperty

    readOnlyDoubleProperty

  • Methods inherited from class javafx.beans.binding.DoubleExpression

    add, add, add, add, add, divide, divide, divide, divide, divide, doubleExpression, doubleExpression, doubleValue, floatValue, getValue, intValue, longValue, multiply, multiply, multiply, multiply, multiply, negate, subtract, subtract, subtract, subtract, subtract

  • Methods inherited from class javafx.beans.binding.NumberExpressionBase

    asString, asString, asString, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThanOrEqualTo, greaterThanOrEqualTo, greaterThanOrEqualTo, greaterThanOrEqualTo, greaterThanOrEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, lessThan, lessThan, lessThan, lessThan, lessThan, lessThanOrEqualTo, lessThanOrEqualTo, lessThanOrEqualTo, lessThanOrEqualTo, lessThanOrEqualTo, numberExpression

  • Methods inherited from class java.lang.Object

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

  • 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.ObservableValue

    addListener, getValue, removeListener

  • Methods inherited from interface javafx.beans.Observable

    addListener, removeListener

  • Methods inherited from interface javafx.beans.value.WritableDoubleValue

    get, set

  • Methods inherited from interface javafx.beans.value.WritableValue

    getValue

  • Methods inherited from interface javafx.beans.value.ObservableDoubleValue

    get

• Constructor Detail

  • DoubleProperty

    public DoubleProperty()

• Method Detail

  • setValue

    public void setValue(Number v)

    Set the wrapped value.

    Specified by:

    setValue in interface WritableDoubleValue

    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 DoubleProperty object.

    Overrides:

    toString in class ReadOnlyDoubleProperty

    Returns:

    a string representation of this DoubleProperty object.

  • doubleProperty

    public static DoubleProperty doubleProperty(Property<Double> property)

    Returns a DoubleProperty that wraps a Property and is bidirectionally bound to it. Changing this property will result in a change of the original property.

    This is very useful when bidirectionally binding an ObjectProperty and a DoubleProperty.

    DoubleProperty doubleProperty = new SimpleDoubleProperty(1.0);
       ObjectProperty<Double> objectProperty = new SimpleObjectProperty<>(2.0);
    
       // Need to keep the reference as bidirectional binding uses weak references
       DoubleProperty objectAsDouble = DoubleProperty.doubleProperty(objectProperty);
    
       doubleProperty.bindBidirectional(objectAsDouble);

    Another approach is to convert the DoubleProperty to ObjectProperty using asObject() method.

    Note: null values in the source property will be interpreted as 0.0

    Parameters:

    property - The source Property

    Returns:

    A DoubleProperty that wraps the Property

    Throws:

    NullPointerException - if property is null

    Since:

    JavaFX 8.0

    See Also:

    asObject()

  • asObject

    public ObjectProperty<Double> asObject()

    Creates an ObjectProperty that bidirectionally bound to this DoubleProperty. If the value of this DoubleProperty changes, the value of the ObjectProperty will be updated automatically and vice-versa.

    Can be used for binding an ObjectProperty to DoubleProperty.

    DoubleProperty doubleProperty = new SimpleDoubleProperty(1.0);
       ObjectProperty<Double> objectProperty = new SimpleObjectProperty<>(2.0);
    
       objectProperty.bind(doubleProperty.asObject());

    Overrides:

    asObject in class ReadOnlyDoubleProperty

    Returns:

    the new ObjectProperty

    Since:

    JavaFX 8.0