EventListenerList

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org.apache.batik.dom.events
Class EventListenerList

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

public class EventListenerList
extends java.lang.Object

A simple list of EventListener. Listeners are always added at the head of the list.

Nested Class Summary

protected static class EventListenerList.Entry


Field Summary

protected EventListenerList.Entry first
          Simple Linked list of listeners.

protected org.w3c.dom.events.EventListener[] listeners
          Array of listeners retained between calls to getEventListeners if the list of listeners doesn't change.

protected int n
          Current number of entries in list.

Constructor Summary

EventListenerList()


Method Summary

void add(org.w3c.dom.events.EventListener listener)
          Adds the specified event listener.

boolean contains(org.w3c.dom.events.EventListener listener)
          Returns true of the specified event listener has already been added to this list, false otherwise.

org.w3c.dom.events.EventListener[] getEventListeners()
          Returns an array of the event listeners of this list, or null if any.

void remove(org.w3c.dom.events.EventListener listener)
          Removes the specified event listener.

int size()
          Returns the number of listeners in the list.

Methods inherited from class java.lang.Object

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

Field Detail

n

protected int n

Current number of entries in list.

first

protected EventListenerList.Entry first

Simple Linked list of listeners.

listeners

protected org.w3c.dom.events.EventListener[] listeners

Array of listeners retained between calls to getEventListeners if the list of listeners doesn't change. This needs to be a copy so if the list of listeners changes during event dispatch it doesn't effect the inprogress dispatch.

Constructor Detail