net.infonode.properties.propertymap
Class PropertyMapWeakListenerManager

java.lang.Object
  net.infonode.properties.propertymap.PropertyMapWeakListenerManager

public class PropertyMapWeakListenerManager
extends java.lang.Object

Handles weak PropertyMap listeners which are garbage collected and removed from the PropertyMap object on which it listens when there are no strong or soft references to the listeners.

Since:

IDW 1.2.0

Version:

$Revision: 1.8 $

Author:

$Author: jesper $

Nested Class Summary

private static class	PropertyMapWeakListenerManager.ListenerRef
private static class	PropertyMapWeakListenerManager.MapListenerRef
private static class	PropertyMapWeakListenerManager.PropertyChangeListenerRef
private static class	PropertyMapWeakListenerManager.TreeListenerRef

Field Summary

private static java.util.WeakHashMap	listenerMap
private static java.util.WeakHashMap	propertyChangeListenerMap
private static PropertyMapWeakListenerManager.ListenerRef	ref
private static java.lang.ref.ReferenceQueue	refQueue
private static java.lang.Runnable	refRemover
private static java.util.WeakHashMap	treeListenerMap

Constructor Summary

private

PropertyMapWeakListenerManager()

Method Summary

private static void	addToMap(java.util.WeakHashMap map, java.lang.Object key, java.lang.Object value)
static void	addWeakListener(PropertyMap map, PropertyMapListener listener) Adds a weak listener to a PropertyMap.
static void	addWeakPropertyChangeListener(PropertyMap map, Property property, PropertyChangeListener listener) Adds a weak property change listener to a PropertyMap.
static void	addWeakTreeListener(PropertyMap map, PropertyMapTreeListener listener) Adds a weak tree listener to a PropertyMap.
private static void	removeFromMap(java.util.WeakHashMap map, java.lang.Object key, PropertyMap propertyMap)
private static void	removeFromMap(java.util.WeakHashMap map, java.lang.Object key, PropertyMap propertyMap, Property property)
static void	removeWeakListener(PropertyMap map, PropertyMapListener listener) Removes a listener previously added with addWeakListener(PropertyMap, PropertyMapListener).
static void	removeWeakPropertyChangeListener(PropertyMap map, Property property, PropertyChangeListener listener) Removes a listener previously added with addWeakPropertyChangeListener(PropertyMap, net.infonode.properties.base.Property, net.infonode.properties.util.PropertyChangeListener).
static void	removeWeakTreeListener(PropertyMap map, PropertyMapTreeListener listener) Removes a listener previously added with addWeakTreeListener(PropertyMap, PropertyMapTreeListener).

Methods inherited from class java.lang.Object

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

Field Detail

listenerMap

private static java.util.WeakHashMap listenerMap

propertyChangeListenerMap

private static java.util.WeakHashMap propertyChangeListenerMap

treeListenerMap

private static java.util.WeakHashMap treeListenerMap

refQueue

private static java.lang.ref.ReferenceQueue refQueue

ref

private static PropertyMapWeakListenerManager.ListenerRef ref

refRemover

private static java.lang.Runnable refRemover

Constructor Detail

PropertyMapWeakListenerManager

private PropertyMapWeakListenerManager()

Method Detail

addToMap

private static void addToMap(java.util.WeakHashMap map,
                             java.lang.Object key,
                             java.lang.Object value)

removeFromMap

private static void removeFromMap(java.util.WeakHashMap map,
                                  java.lang.Object key,
                                  PropertyMap propertyMap)

removeFromMap

private static void removeFromMap(java.util.WeakHashMap map,
                                  java.lang.Object key,
                                  PropertyMap propertyMap,
                                  Property property)

addWeakListener

public static void addWeakListener(PropertyMap map,
                                   PropertyMapListener listener)

Adds a weak listener to a PropertyMap.

Parameters:

map - the PropertyMap

listener - the listener

addWeakPropertyChangeListener

public static void addWeakPropertyChangeListener(PropertyMap map,
                                                 Property property,
                                                 PropertyChangeListener listener)

Adds a weak property change listener to a PropertyMap.

Parameters:

map - the PropertyMap

property - the property to listen to changes on

listener - the listener

addWeakTreeListener

public static void addWeakTreeListener(PropertyMap map,
                                       PropertyMapTreeListener listener)

Adds a weak tree listener to a PropertyMap.

Parameters:

map - the PropertyMap

listener - the listener

removeWeakListener

public static void removeWeakListener(PropertyMap map,
                                      PropertyMapListener listener)

Removes a listener previously added with addWeakListener(PropertyMap, PropertyMapListener).

Parameters:

map - the map on which the listener was added

listener - the listener

removeWeakPropertyChangeListener

public static void removeWeakPropertyChangeListener(PropertyMap map,
                                                    Property property,
                                                    PropertyChangeListener listener)

Removes a listener previously added with addWeakPropertyChangeListener(PropertyMap, net.infonode.properties.base.Property, net.infonode.properties.util.PropertyChangeListener).

Parameters:

map - the map on which the listener was added

property - the property on which the listener listens to changes

listener - the listener

removeWeakTreeListener

public static void removeWeakTreeListener(PropertyMap map,
                                          PropertyMapTreeListener listener)

Removes a listener previously added with addWeakTreeListener(PropertyMap, PropertyMapTreeListener).

Parameters:

map - the map on which the listener was added

listener - the listener