org.apache.batik.dom.events
Class EventListenerList

java.lang.Object
  org.apache.batik.dom.events.EventListenerList

public class EventListenerList
extends Object

Class to manager event listeners for one event type.

Version:

$Id: EventListenerList.java 1733416 2016-03-03 07:07:13Z gadams $

Author:

Thierry Kormann, Cameron McCormack

Nested Class Summary

class

EventListenerList.Entry EventListenerTable entry class.

Field Summary

protected IntTable	counts Counts of listener entries with a given namespace URI.
protected EventListenerList.Entry	head Linked list of entries.
protected EventListenerList.Entry[]	listeners Cache of listeners with any namespace URI.
protected HashTable	listenersNS Caches of listeners with a given namespace URI.
protected int	n Total number of event listners.

Constructor Summary

EventListenerList()

Method Summary

void	addListener(String namespaceURI, Object group, EventListener listener) Adds a listener.
EventListenerList.Entry[]	getEventListeners() Returns an array containing all event listener entries.
EventListenerList.Entry[]	getEventListeners(String namespaceURI) Returns an array of EventListeners that match the given namespace URI.
boolean	hasEventListener(String namespaceURI) Returns whether there is an event listener for the given namespace URI.
void	removeListener(String namespaceURI, EventListener listener) Removes a listener.
int	size() Returns the number of event listeners stored in this object.

Methods inherited from class java.lang.Object

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

Field Detail

n

protected int n

Total number of event listners.

head

protected EventListenerList.Entry head

Linked list of entries.

counts

protected IntTable counts

Counts of listener entries with a given namespace URI.

listeners

protected EventListenerList.Entry[] listeners

Cache of listeners with any namespace URI.

listenersNS

protected HashTable listenersNS

Caches of listeners with a given namespace URI.

Constructor Detail

EventListenerList

public EventListenerList()

Method Detail

addListener

public void addListener(String namespaceURI,
                        Object group,
                        EventListener listener)

Adds a listener.

removeListener

public void removeListener(String namespaceURI,
                           EventListener listener)

Removes a listener.

getEventListeners

public EventListenerList.Entry[] getEventListeners()

Returns an array containing all event listener entries.

getEventListeners

public EventListenerList.Entry[] getEventListeners(String namespaceURI)

Returns an array of EventListeners that match the given namespace URI.

hasEventListener

public boolean hasEventListener(String namespaceURI)

Returns whether there is an event listener for the given namespace URI.

size

public int size()

Returns the number of event listeners stored in this object.