Class EventListenerProxy<T extends EventListener>
- java.lang.Object
-
- java.util.EventListenerProxy<T>
- All Implemented Interfaces:
EventListener
- Direct Known Subclasses:
-
AWTEventListenerProxy
,PropertyChangeListenerProxy
,VetoableChangeListenerProxy
public abstract class EventListenerProxy<T extends EventListener> extends Object implements EventListener
An abstract wrapper class for an EventListener
class which associates a set of additional parameters with the listener. Subclasses must provide the storage and accessor methods for the additional arguments or parameters.
For example, a bean which supports named properties would have a two argument method signature for adding a PropertyChangeListener
for a property:
public void addPropertyChangeListener(String propertyName, PropertyChangeListener listener)If the bean also implemented the zero argument get listener method:
public PropertyChangeListener[] getPropertyChangeListeners()then the array may contain inner
PropertyChangeListeners
which are also PropertyChangeListenerProxy
objects. If the calling method is interested in retrieving the named property then it would have to test the element to see if it is a proxy class.
- Since:
- 1.4
Constructor Summary
Constructor | Description |
---|---|
EventListenerProxy(T listener) | Creates a proxy for the specified listener. |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
T | getListener() | Returns the listener associated with the proxy. |
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
EventListenerProxy
public EventListenerProxy(T listener)
Creates a proxy for the specified listener.
- Parameters:
-
listener
- the listener object
Method Detail
getListener
public T getListener()
Returns the listener associated with the proxy.
- Returns:
- the listener associated with the proxy