Class MapProperty<K,V>

java.lang.Object

javafx.beans.binding.MapExpression<K,V>

javafx.beans.property.ReadOnlyMapProperty<K,V>

javafx.beans.property.MapProperty<K,V>

Type Parameters:

K - the type of the key elements of the Map

V - the type of the value elements of the Map

All Implemented Interfaces:

Map<K,V>, Observable, Property<ObservableMap<K,V>>, ReadOnlyProperty<ObservableMap<K,V>>, ObservableMapValue<K,V>, ObservableObjectValue<ObservableMap<K,V>>, ObservableValue<ObservableMap<K,V>>, WritableMapValue<K,V>, WritableObjectValue<ObservableMap<K,V>>, WritableValue<ObservableMap<K,V>>, ObservableMap<K,V>

Direct Known Subclasses:

MapPropertyBase

public abstract class MapProperty<K,V>
extends ReadOnlyMapProperty<K,V>
implements Property<ObservableMap<K,V>>, WritableMapValue<K,V>

This class provides a full implementation of a Property wrapping an ObservableMap. The value of a MapProperty can be get and set with ObservableObjectValue.get(), MapExpression.getValue(), WritableObjectValue.set(Object), and setValue(javafx.collections.ObservableMap). A property can be bound and unbound unidirectional with Property.bind(javafx.beans.value.ObservableValue) and Property.unbind(). Bidirectional bindings can be created and removed with bindBidirectional(Property) and unbindBidirectional(Property). The context of a MapProperty can be read with ReadOnlyProperty.getBean() and ReadOnlyProperty.getName().

Since:

JavaFX 2.1

See Also:

• ObservableMap
• ObservableMapValue
• WritableMapValue
• ReadOnlyMapProperty
• Property

Nested Class Summary

Nested classes/interfaces declared in interface Map

Map.Entry<K,V>

Property Summary

Properties declared in class MapExpression

empty, size

Type	Property	Description
abstract ReadOnlyBooleanProperty	empty	A boolean property that is true, if the map is empty.
abstract ReadOnlyIntegerProperty	size	An integer property that represents the size of the map.

Constructor Summary

Constructors

Constructor	Description
MapProperty()	Creates a default MapProperty.

Method Summary

Modifier and Type	Method	Description
void	bindBidirectional(Property<ObservableMap<K,V>> other)	Create a bidirectional binding between this Property and another one.
void	setValue(ObservableMap<K,V> v)	Set the wrapped value.
String	toString()	Returns a string representation of this MapProperty object.
void	unbindBidirectional(Property<ObservableMap<K,V>> other)	Removes a bidirectional binding between this Property and another one.

Methods declared in class ReadOnlyMapProperty

bindContent, bindContentBidirectional, equals, hashCode, unbindContent, unbindContentBidirectional

Modifier and Type	Method	Description
void	bindContent(ObservableMap<K,V> map)	Creates a content binding between the ObservableMap, that is wrapped in this ReadOnlyMapProperty, and another ObservableMap.
void	bindContentBidirectional(ObservableMap<K,V> map)	Creates a bidirectional content binding of the ObservableMap, that is wrapped in this ReadOnlyMapProperty, and another ObservableMap.
boolean	equals(Object obj)
int	hashCode()	Returns a hash code for this ReadOnlyMapProperty object.
void	unbindContent(Object object)	Deletes a content binding between the ObservableMap, that is wrapped in this ReadOnlyMapProperty, and another Object.
void	unbindContentBidirectional(Object object)	Deletes a bidirectional content binding between the ObservableMap, that is wrapped in this ReadOnlyMapProperty, and another Object.

Methods declared in class MapExpression

asString, clear, containsKey, containsValue, emptyProperty, entrySet, get, getSize, getValue, isEmpty, isEqualTo, isNotEqualTo, isNotNull, isNull, keySet, mapExpression, put, putAll, remove, size, sizeProperty, valueAt, valueAt, values

Modifier and Type	Method	Description
StringBinding	asString()	Creates a StringBinding that holds the value of the MapExpression turned into a String.
void	clear()
boolean	containsKey(Object obj)
boolean	containsValue(Object obj)
abstract ReadOnlyBooleanProperty	emptyProperty()	A boolean property that is true, if the map is empty.
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
int	getSize()	The size of the map
ObservableMap<K,V>	getValue()	Returns the current value of this ObservableValue
boolean	isEmpty()	Gets the value of the empty property.
BooleanBinding	isEqualTo(ObservableMap<?,?> other)	Creates a new BooleanBinding that holds true if this map is equal to another ObservableMap.
BooleanBinding	isNotEqualTo(ObservableMap<?,?> other)	Creates a new BooleanBinding that holds true if this map is not equal to another ObservableMap.
BooleanBinding	isNotNull()	Creates a new BooleanBinding that holds true if the wrapped map is not null.
BooleanBinding	isNull()	Creates a new BooleanBinding that holds true if the wrapped map is null.
Set<K>	keySet()
static <K,V> MapExpression<K,V>	mapExpression(ObservableMapValue<K,V> value)	Returns a MapExpression that wraps a ObservableMapValue.
V	put(K key, V value)
void	putAll(Map<? extends K, ? extends V> elements)
V	remove(Object obj)
int	size()
abstract ReadOnlyIntegerProperty	sizeProperty()	An integer property that represents the size of the map.
ObjectBinding<V>	valueAt(ObservableValue<K> key)	Creates a new ObjectBinding that contains the mapping of the specified key.
ObjectBinding<V>	valueAt(K key)	Creates a new ObjectBinding that contains the mapping of the specified key.
Collection<V>	values()

Methods declared in class Object

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

Methods declared in interface Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Methods declared in interface Observable

addListener, removeListener, subscribe

Modifier and Type	Method	Description
void	addListener(InvalidationListener listener)	Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
void	removeListener(InvalidationListener listener)	Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
default Subscription	subscribe(Runnable invalidationSubscriber)	Creates a Subscription on this Observable which calls invalidationSubscriber whenever it becomes invalid.

Methods declared in interface ObservableMap

addListener, removeListener

Modifier and Type	Method	Description
void	addListener(MapChangeListener<? super K, ? super V> listener)	Add a listener to this observable map.
void	removeListener(MapChangeListener<? super K, ? super V> listener)	Tries to removed a listener from this observable map.

Methods declared in interface ObservableObjectValue

get

Modifier and Type	Method	Description
ObservableMap<K,V>	get()	Returns the current value of this ObservableObjectValue<T>.

Methods declared in interface ObservableValue

addListener, flatMap, map, orElse, removeListener, subscribe, subscribe, when

Modifier and Type	Method	Description
void	addListener(ChangeListener<? super ObservableMap<K,V>> listener)	Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes.
default <U> ObservableValue<U>	flatMap(Function<? super ObservableMap<K,V>, ? extends ObservableValue<? extends U>> mapper)	Returns an ObservableValue that holds the value of an ObservableValue produced by applying the given mapping function on this value.
default <U> ObservableValue<U>	map(Function<? super ObservableMap<K,V>, ? extends U> mapper)	Returns an ObservableValue that holds the result of applying the given mapping function on this value.
default ObservableValue<ObservableMap<K,V>>	orElse(ObservableMap<K,V> constant)	Returns an ObservableValue that holds this value, or the given constant if it is null.
void	removeListener(ChangeListener<? super ObservableMap<K,V>> listener)	Removes the given listener from the list of listeners that are notified whenever the value of the ObservableValue changes.
default Subscription	subscribe(BiConsumer<? super ObservableMap<K,V>, ? super ObservableMap<K,V>> changeSubscriber)	Creates a Subscription on this ObservableValue which calls the given changeSubscriber with the old and new value whenever its value changes.
default Subscription	subscribe(Consumer<? super ObservableMap<K,V>> valueSubscriber)	Creates a Subscription on this ObservableValue which immediately provides the current value to the given valueSubscriber, followed by any subsequent values whenever its value changes.
default ObservableValue<ObservableMap<K,V>>	when(ObservableValue<Boolean> condition)	Returns an ObservableValue that holds this value and is updated only when condition holds true.

Methods declared in interface Property

bind, isBound, unbind

Modifier and Type	Method	Description
void	bind(ObservableValue<? extends ObservableMap<K,V>> observable)	Create a unidirection binding for this Property.
boolean	isBound()	Can be used to check, if a Property is bound.
void	unbind()	Remove the unidirectional binding for this Property.

Methods declared in interface ReadOnlyProperty

getBean, getName

Modifier and Type	Method	Description
Object	getBean()	Returns the Object that contains this property.
String	getName()	Returns the name of this property.

Methods declared in interface WritableObjectValue

get, set

Modifier and Type	Method	Description
ObservableMap<K,V>	get()	Get the wrapped value.
void	set(ObservableMap<K,V> value)	Set the wrapped value.

Methods declared in interface WritableValue

getValue

Modifier and Type	Method	Description
ObservableMap<K,V>	getValue()	Get the wrapped value.

Constructor Details

MapProperty

public MapProperty()

Creates a default MapProperty.

Method Details

setValue

public void setValue(ObservableMap<K,V> v)

Set the wrapped value.

Specified by:

setValue in interface WritableValue<K>

Parameters:

v - The new value

bindBidirectional

public void bindBidirectional(Property<ObservableMap<K,V>> 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<K>

Parameters:

other - the other Property

unbindBidirectional

public void unbindBidirectional(Property<ObservableMap<K,V>> other)

Removes 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.bindBidirectional(property2);
    property2.unbindBidirectional(property1);

Specified by:

unbindBidirectional in interface Property<K>

Parameters:

other - the other Property

toString

public String toString()

Returns a string representation of this MapProperty object.

Overrides:

toString in class ReadOnlyMapProperty<K,V>

Returns:

a string representation of this MapProperty object.