Module javafx.base

Package javafx.beans.property

Class ReadOnlyMapPropertyBase<K,V>

java.lang.Object

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

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

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

All Implemented Interfaces:

Map<K,V>, Observable, ReadOnlyProperty<ObservableMap<K,V>>, ObservableMapValue<K,V>, ObservableObjectValue<ObservableMap<K,V>>, ObservableValue<ObservableMap<K,V>>, ObservableMap<K,V>

public abstract class ReadOnlyMapPropertyBase<K,V>
extends ReadOnlyMapProperty<K,V>

Base class for all readonly properties wrapping an ObservableMap. This class provides a default implementation to attach listener.

Since:

JavaFX 2.1

See Also:

• ReadOnlyMapProperty

Property Summary

Properties declared in class javafx.beans.binding.MapExpression

empty, size

Nested Class Summary

Nested classes/interfaces declared in interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
ReadOnlyMapPropertyBase()	Creates a default ReadOnlyMapPropertyBase.

Method Summary

Modifier and Type	Method	Description
void	addListener(InvalidationListener listener)	Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
void	addListener(ChangeListener<? super ObservableMap<K,V>> listener)	Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes.
void	addListener(MapChangeListener<? super K,? super V> listener)	Add a listener to this observable map.
protected void	fireValueChangedEvent()	This method needs to be called if the reference to the ObservableList changes.
protected void	fireValueChangedEvent(MapChangeListener.Change<? extends K,? extends V> change)	This method needs to be called if the content of the referenced ObservableList changes.
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(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.
void	removeListener(MapChangeListener<? super K,? super V> listener)	Tries to removed a listener from this observable map.

Methods declared in class javafx.beans.property.ReadOnlyMapProperty

bindContent, bindContentBidirectional, equals, hashCode, toString, unbindContent, unbindContentBidirectional

Methods declared in class javafx.beans.binding.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

Methods declared in class java.lang.Object

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

Methods declared in interface java.util.Map

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

Methods declared in interface javafx.beans.value.ObservableObjectValue

get

Methods declared in interface javafx.beans.value.ObservableValue

flatMap, getValue, map, orElse

Methods declared in interface javafx.beans.property.ReadOnlyProperty

getBean, getName

Constructor Details

ReadOnlyMapPropertyBase

public ReadOnlyMapPropertyBase()

Creates a default ReadOnlyMapPropertyBase.

Method Details

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.

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.

Parameters:

listener - The listener to remove

See Also:

• Observable.addListener(InvalidationListener)

addListener

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

Description copied from interface: ObservableValue

Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes. 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 ChangeListener instance may be safely registered for different ObservableValues.

The ObservableValue 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 WeakChangeListener avoid this situation.

Parameters:

listener - The listener to register

See Also:

• ObservableValue.removeListener(ChangeListener)

removeListener

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

Description copied from interface: ObservableValue

Removes the given listener from the list of listeners that are notified whenever the value of the ObservableValue changes.

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.

Parameters:

listener - The listener to remove

See Also:

• ObservableValue.addListener(ChangeListener)

addListener

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

Description copied from interface: ObservableMap

Add a listener to this observable map.

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.

Parameters:

listener - a listener to remove

fireValueChangedEvent

protected void fireValueChangedEvent()

This method needs to be called if the reference to the ObservableList changes. It sends notifications to all attached InvalidationListeners, ChangeListeners, and ListChangeListener. This method needs to be called, if the value of this property changes.

fireValueChangedEvent

protected void fireValueChangedEvent(MapChangeListener.Change<? extends K,? extends V> change)

This method needs to be called if the content of the referenced ObservableList changes. Sends notifications to all attached InvalidationListeners, ChangeListeners, and ListChangeListener. This method is called when the content of the list changes.

Parameters:

change - the change that needs to be propagated