javafx.collections

Class FXCollections.EmptyObservableMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

javafx.collections.FXCollections.EmptyObservableMap<K,V>

All Implemented Interfaces:

java.util.Map<K,V>, Observable, ObservableMap<K,V>

Enclosing class:

FXCollections

private static class FXCollections.EmptyObservableMap<K,V>
extends java.util.AbstractMap<K,V>
implements ObservableMap<K,V>

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
EmptyObservableMap()

Method Summary

Modifier and Type	Method and Description
void	addListener(InvalidationListener listener) Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
void	addListener(MapChangeListener<? super K,? super V> listener) Add a listener to this observable map.
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
java.util.Set<java.util.Map.Entry<K,V>>	entrySet()
boolean	equals(java.lang.Object o)
V	get(java.lang.Object key)
int	hashCode()
boolean	isEmpty()
java.util.Set<K>	keySet()
void	removeListener(InvalidationListener listener) Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
void	removeListener(MapChangeListener<? super K,? super V> listener) Tries to removed a listener from this observable map.
int	size()
java.util.Collection<V>	values()

Methods inherited from class java.util.AbstractMap

clear, clone, put, putAll, remove, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll

Constructor Detail

EmptyObservableMap

public EmptyObservableMap()

Method Detail

addListener

public void addListener(InvalidationListener listener)

Description copied from interface: Observable

Adds an InvalidationListener which will be notified whenever the Observable becomes invalid. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.

Note that the same actual InvalidationListener instance may be safely registered for different Observables.

The Observable stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakInvalidationListener avoid this situation.

Specified by:

addListener in interface Observable

Parameters:

listener - The listener to register

See Also:

Observable.removeListener(InvalidationListener)

removeListener

public void removeListener(InvalidationListener listener)

Description copied from interface: Observable

Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.

If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.

Specified by:

removeListener in interface Observable

Parameters:

listener - The listener to remove

See Also:

Observable.addListener(InvalidationListener)

addListener

public void addListener(MapChangeListener<? super K,? super V> listener)

Description copied from interface: ObservableMap

Add a listener to this observable map.

Specified by:

addListener in interface ObservableMap<K,V>

Parameters:

listener - the listener for listening to the list changes

removeListener

public void removeListener(MapChangeListener<? super K,? super V> listener)

Description copied from interface: ObservableMap

Tries to removed a listener from this observable map. If the listener is not attached to this map, nothing happens.

Specified by:

removeListener in interface ObservableMap<K,V>

Parameters:

listener - a listener to remove

size

public int size()

Specified by:

size in interface java.util.Map<K,V>

Overrides:

size in class java.util.AbstractMap<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<K,V>

Overrides:

isEmpty in class java.util.AbstractMap<K,V>

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map<K,V>

Overrides:

containsKey in class java.util.AbstractMap<K,V>

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map<K,V>

Overrides:

containsValue in class java.util.AbstractMap<K,V>

get

public V get(java.lang.Object key)

Specified by:

get in interface java.util.Map<K,V>

Overrides:

get in class java.util.AbstractMap<K,V>

keySet

public java.util.Set<K> keySet()

Specified by:

keySet in interface java.util.Map<K,V>

Overrides:

keySet in class java.util.AbstractMap<K,V>

values

public java.util.Collection<V> values()

Specified by:

values in interface java.util.Map<K,V>

Overrides:

values in class java.util.AbstractMap<K,V>

entrySet

public java.util.Set<java.util.Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface java.util.Map<K,V>

Specified by:

entrySet in class java.util.AbstractMap<K,V>

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map<K,V>

Overrides:

equals in class java.util.AbstractMap<K,V>

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map<K,V>

Overrides:

hashCode in class java.util.AbstractMap<K,V>