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 1831635 2018-05-15 13:33:47Z ssteiner $

Author:

Thierry Kormann, Cameron McCormack

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EventListenerList.Entry EventListenerTable entry class.

Field Summary

Fields

Modifier and Type	Field and Description
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 HashMap	listenersNS Caches of listeners with a given namespace URI.
protected int	n Total number of event listners.

Constructor Summary

Constructors

Constructor and Description
EventListenerList()

Method Summary

Methods

Modifier and Type	Method and Description
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 HashMap 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.