- java.lang.Object
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- javafx.beans.binding.NumberExpressionBase
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- javafx.beans.binding.FloatExpression
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- All Implemented Interfaces:
NumberExpression,Observable,ObservableFloatValue,ObservableNumberValue,ObservableValue<Number>
- Direct Known Subclasses:
FloatBinding,ReadOnlyFloatProperty
public abstract class FloatExpression extends NumberExpressionBase implements ObservableFloatValue
FloatExpressionis anObservableFloatValueplus additional convenience methods to generate bindings in a fluent style.A concrete sub-class of
FloatExpressionhas to implement the methodObservableFloatValue.get(), which provides the actual value of this expression.- Since:
- JavaFX 2.0
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Constructor Summary
Constructors Constructor Description FloatExpression()Creates a defaultFloatExpression.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description ObjectExpression<Float>asObject()Creates anObjectExpressionthat holds the value of thisFloatExpression.static FloatExpressionfloatExpression(ObservableFloatValue value)Returns aFloatExpressionthat wraps aObservableFloatValue.static <T extends Number>
FloatExpressionfloatExpression(ObservableValue<T> value)Returns aFloatExpressionthat wraps anObservableValue.-
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, toString, wait, wait, wait
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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 interface javafx.beans.Observable
addListener, removeListener
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Methods declared in interface javafx.beans.value.ObservableFloatValue
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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Method Detail
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floatExpression
public static FloatExpression floatExpression(ObservableFloatValue value)
Returns aFloatExpressionthat wraps aObservableFloatValue. If theObservableFloatValueis already aFloatExpression, it will be returned. Otherwise a newFloatBindingis created that is bound to theObservableFloatValue.- Parameters:
value- The sourceObservableFloatValue- Returns:
- A
FloatExpressionthat wraps theObservableFloatValueif necessary - Throws:
NullPointerException- ifvalueisnull
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floatExpression
public static <T extends Number> FloatExpression floatExpression(ObservableValue<T> value)
Returns aFloatExpressionthat wraps anObservableValue. If theObservableValueis already aFloatExpression, it will be returned. Otherwise a newFloatBindingis created that is bound to theObservableValue.Note: this method can be used to convert an
ObjectExpressionorObjectPropertyof specific number type to FloatExpression, which is essentially anObservableValue<Number>. See sample below.
Note: null values will be interpreted as 0fFloatProperty floatProperty = new SimpleFloatProperty(1.0f); ObjectProperty<Float> objectProperty = new SimpleObjectProperty<>(2.0f); BooleanBinding binding = floatProperty.greaterThan(FloatExpression.floatExpression(objectProperty));
- Type Parameters:
T- The type of Number to be wrapped- Parameters:
value- The sourceObservableValue- Returns:
- A
FloatExpressionthat wraps theObservableValueif necessary - Throws:
NullPointerException- ifvalueisnull- Since:
- JavaFX 8.0
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asObject
public ObjectExpression<Float> asObject()
Creates anObjectExpressionthat holds the value of thisFloatExpression. If the value of thisFloatExpressionchanges, the value of theObjectExpressionwill be updated automatically.- Returns:
- the new
ObjectExpression - Since:
- JavaFX 8.0
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