com.droplets.api.event
Class EventListenerList

java.lang.Object
  |
  +--com.droplets.api.event.EventListenerList

All Implemented Interfaces:

java.io.Serializable

public class EventListenerList

extends java.lang.Object

implements java.io.Serializable

This class mimics javax.swing.event.EventListenerList. See the Javadoc for that class. It also provides a removeAll method to deregister all listeners at once.

See Also:

Serialized Form

Field Summary

protected java.lang.Object[]

listenerList

Constructor Summary

EventListenerList()

Method Summary

void	add(java.lang.Class cls, java.util.EventListener l) Adds the listener specified by the second arg to the list.
int	getListenerCount() Returns the number of listeners in this list.
int	getListenerCount(java.lang.Class t) Returns the number of listeners of the supplied type in this list.
java.lang.Object[]	getListenerList() Gets an array of all listeners.
void	remove(java.lang.Class cls, java.util.EventListener l) Removes a listener.
void	removeAll() Removes all listeners.
java.lang.String	toString() Gets a string representation of this object.

Methods inherited from class java.lang.Object

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

Field Detail

listenerList

protected transient java.lang.Object[] listenerList

Constructor Detail

EventListenerList

public EventListenerList()

Method Detail

getListenerList

public java.lang.Object[] getListenerList()

Gets an array of all listeners.

Returns:

an array of all listeners

getListenerCount

public int getListenerCount()

Returns the number of listeners in this list.

getListenerCount

public int getListenerCount(java.lang.Class t)

Returns the number of listeners of the supplied type in this list.

add

public void add(java.lang.Class cls,
                java.util.EventListener l)

Adds the listener specified by the second arg to the list. The first arg should describe the listener's type.

Parameters:

cls - the type of the listener to be added

l - the listener to be added

Throws:

java.lang.IllegalArgumentException - if the second argument's type is not the first argument

remove

public void remove(java.lang.Class cls,
                   java.util.EventListener l)

Removes a listener.

Parameters:

cls - the type of the listener to be removed

l - the listener to be removed

Throws:

java.lang.IllegalArgumentException - if the second argument's type is not the first argument

removeAll

public void removeAll()

Removes all listeners.

toString

public java.lang.String toString()

Gets a string representation of this object. Useful for debugging.

Overrides:

toString in class java.lang.Object