- java.lang.Object
-
- javafx.beans.binding.NumberExpressionBase
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- javafx.beans.binding.DoubleExpression
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- javafx.beans.property.ReadOnlyDoubleProperty
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- javafx.beans.property.DoubleProperty
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- All Implemented Interfaces:
NumberExpression
,Observable
,Property<Number>
,ReadOnlyProperty<Number>
,ObservableDoubleValue
,ObservableNumberValue
,ObservableValue<Number>
,WritableDoubleValue
,WritableNumberValue
,WritableValue<Number>
- Direct Known Subclasses:
DoublePropertyBase
,JavaBeanDoubleProperty
public abstract class DoubleProperty extends ReadOnlyDoubleProperty implements Property<Number>, WritableDoubleValue
This class defines aProperty
wrapping adouble
value.The value of a
DoubleProperty
can be get and set withObservableDoubleValue.get()
,ObservableValue.getValue()
,WritableDoubleValue.set(double)
, andWritableDoubleValue.setValue(Number)
.A property can be bound and unbound unidirectional with
Property.bind(ObservableValue)
andProperty.unbind()
. Bidirectional bindings can be created and removed withProperty.bindBidirectional(Property)
andProperty.unbindBidirectional(Property)
.The context of a
DoubleProperty
can be read withReadOnlyProperty.getBean()
andReadOnlyProperty.getName()
.Note: setting or binding this property to a null value will set the property to "0.0". See
WritableDoubleValue.setValue(java.lang.Number)
.- Since:
- JavaFX 2.0
- See Also:
ObservableDoubleValue
,WritableDoubleValue
,ReadOnlyDoubleProperty
,Property
-
-
Constructor Summary
Constructors Constructor Description DoubleProperty()
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description ObjectProperty<Double>
asObject()
Creates anObjectProperty
that bidirectionally bound to thisDoubleProperty
.static DoubleProperty
doubleProperty(Property<Double> property)
Returns aDoubleProperty
that wraps aProperty
and is bidirectionally bound to it.String
toString()
Returns a string representation of thisDoubleProperty
object.-
Methods declared in class javafx.beans.binding.DoubleExpression
doubleExpression, doubleExpression
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Methods declared in interface javafx.beans.binding.NumberExpression
add, add, add, add, add, asString, asString, asString, divide, divide, divide, divide, divide, 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, multiply, multiply, multiply, multiply, multiply, negate, subtract, subtract, subtract, subtract, subtract
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Methods declared in class javafx.beans.binding.NumberExpressionBase
numberExpression
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Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods declared in interface javafx.beans.Observable
addListener, removeListener
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Methods declared in interface javafx.beans.value.ObservableDoubleValue
get
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Methods declared in interface javafx.beans.value.ObservableNumberValue
doubleValue, floatValue, intValue, longValue
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Methods declared in interface javafx.beans.value.ObservableValue
addListener, getValue, removeListener
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Methods declared in interface javafx.beans.property.Property
bind, bindBidirectional, isBound, unbind, unbindBidirectional
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Methods declared in class javafx.beans.property.ReadOnlyDoubleProperty
readOnlyDoubleProperty
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Methods declared in interface javafx.beans.property.ReadOnlyProperty
getBean, getName
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Methods declared in interface javafx.beans.value.WritableDoubleValue
get, set, setValue
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Methods declared in interface javafx.beans.value.WritableValue
getValue
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-
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Method Detail
-
toString
public String toString()
Returns a string representation of thisDoubleProperty
object.- Overrides:
toString
in classReadOnlyDoubleProperty
- Returns:
- a string representation of this
DoubleProperty
object.
-
doubleProperty
public static DoubleProperty doubleProperty(Property<Double> property)
Returns aDoubleProperty
that wraps aProperty
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<Double> and a DoubleProperty.
Another approach is to convert the DoubleProperty to ObjectProperty usingDoubleProperty 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);
asObject()
method.Note: null values in the source property will be interpreted as 0.0
- Parameters:
property
- The sourceProperty
- Returns:
- A
DoubleProperty
that wraps theProperty
- Throws:
NullPointerException
- ifproperty
isnull
- Since:
- JavaFX 8.0
- See Also:
asObject()
-
asObject
public ObjectProperty<Double> asObject()
Creates anObjectProperty
that bidirectionally bound to thisDoubleProperty
. If the value of thisDoubleProperty
changes, the value of theObjectProperty
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 classReadOnlyDoubleProperty
- Returns:
- the new
ObjectProperty
- Since:
- JavaFX 8.0
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