java.lang.Object
javafx.beans.binding.SetExpression<E>
- Type Parameters:
E- the type of theSetelements
- All Implemented Interfaces:
Iterable<E>,Collection<E>,Set<E>,Observable,ObservableObjectValue<ObservableSet<E>>,ObservableSetValue<E>,ObservableValue<ObservableSet<E>>,ObservableSet<E>
- Direct Known Subclasses:
ReadOnlySetProperty,SetBinding
public abstract class SetExpression<E> extends Object implements ObservableSetValue<E>
SetExpression is an
ObservableSetValue plus additional convenience
methods to generate bindings in a fluent style.
A concrete sub-class of SetExpression has to implement the method
ObservableObjectValue.get(), which provides the
actual value of this expression.
If the wrapped list of a SetExpression is null, all methods implementing the Set
interface will behave as if they were applied to an immutable empty set.
- Since:
- JavaFX 2.1
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Property Summary
Properties Type Property Description abstract ReadOnlyBooleanPropertyemptyA boolean property that istrue, if the set is empty.abstract ReadOnlyIntegerPropertysizeAn integer property that represents the size of the set. -
Constructor Summary
Constructors Constructor Description SetExpression()Creates a defaultSetExpression. -
Method Summary
Modifier and Type Method Description booleanadd(E element)booleanaddAll(Collection<? extends E> elements)StringBindingasString()voidclear()booleancontains(Object obj)booleancontainsAll(Collection<?> objects)abstract ReadOnlyBooleanPropertyemptyProperty()A boolean property that istrue, if the set is empty.intgetSize()The size of the setObservableSet<E>getValue()Returns the current value of thisObservableValuebooleanisEmpty()Gets the value of the property empty.BooleanBindingisEqualTo(ObservableSet<?> other)BooleanBindingisNotEqualTo(ObservableSet<?> other)BooleanBindingisNotNull()BooleanBindingisNull()Iterator<E>iterator()booleanremove(Object obj)booleanremoveAll(Collection<?> objects)booleanretainAll(Collection<?> objects)static <E> SetExpression<E>setExpression(ObservableSetValue<E> value)Returns aSetExpressionthat wraps aObservableSetValue.intsize()abstract ReadOnlyIntegerPropertysizeProperty()An integer property that represents the size of the set.Object[]toArray()<T> T[]toArray(T[] array)
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Property Details
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Constructor Details
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SetExpression
public SetExpression()Creates a defaultSetExpression.
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Method Details
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getValue
Description copied from interface:ObservableValueReturns the current value of thisObservableValue- Specified by:
getValuein interfaceObservableValue<E>- Returns:
- The current value
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setExpression
Returns aSetExpressionthat wraps aObservableSetValue. If theObservableSetValueis already aSetExpression, it will be returned. Otherwise a newSetBindingis created that is bound to theObservableSetValue.- Type Parameters:
E- the type of theSetelements- Parameters:
value- The sourceObservableSetValue- Returns:
- A
SetExpressionthat wraps theObservableSetValueif necessary - Throws:
NullPointerException- ifvalueisnull
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getSize
public int getSize()The size of the set- Returns:
- the size
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sizeProperty
An integer property that represents the size of the set.- See Also:
getSize()
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emptyProperty
A boolean property that istrue, if the set is empty.- See Also:
isEmpty()
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isEqualTo
- Parameters:
other- the otherObservableSet- Returns:
- the new
BooleanBinding - Throws:
NullPointerException- ifotherisnull
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isNotEqualTo
- Parameters:
other- the otherObservableSet- Returns:
- the new
BooleanBinding - Throws:
NullPointerException- ifotherisnull
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isNull
- Returns:
- the new
BooleanBinding
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isNotNull
- Returns:
- the new
BooleanBinding
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asString
Creates aStringBindingthat holds the value of theSetExpressionturned into aString. If the value of thisSetExpressionchanges, the value of theStringBindingwill be updated automatically.- Returns:
- the new
StringBinding
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size
public int size() -
isEmpty
public boolean isEmpty()Gets the value of the property empty. -
contains
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iterator
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toArray
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toArray
public <T> T[] toArray(T[] array) -
add
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remove
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containsAll
- Specified by:
containsAllin interfaceCollection<E>- Specified by:
containsAllin interfaceSet<E>
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addAll
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removeAll
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retainAll
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clear
public void clear()
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