org.argouml.model.uml
Class EventListenerHashMap

java.lang.Object
  |
  +--org.argouml.model.uml.EventListenerHashMap

class EventListenerHashMap

extends java.lang.Object

A map containing instances of meta-classes (modelelements) as keys and EventListenerLists as values. The class is a wrapper around an underlying java.util.HashMap and provides some custom methods for easy access to the underlying data structure.

Field Summary

private java.util.Map	_listenerMap The list of ListenerType - Listener pairs
private static MElementListener[]	NULL_ARRAY A null array to be shared by all empty listener lists

Constructor Summary

(package private)

EventListenerHashMap()

Method Summary

MElementListener[]	getListeners(MBase element, EventKey key) Returns all listeners that are registered for the given modelElement and the given EventKey.
boolean	isEmpty() Tests wether there are any listeners registred for any modelelements and eventkeys.
void	put(MBase element, EventKey key, MElementListener listener) Puts the given listener as listener to the given modelelement and given eventKey in the map.
void	remove(MBase element) Removes the complete EventListenerList for the given element.
void	remove(MBase element, EventKey key, MElementListener listener) Removes a listener for a given eventkey and a given modelelement.

Methods inherited from class java.lang.Object

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

Field Detail

NULL_ARRAY

private static final MElementListener[] NULL_ARRAY

A null array to be shared by all empty listener lists

_listenerMap

private transient java.util.Map _listenerMap

The list of ListenerType - Listener pairs

Constructor Detail

EventListenerHashMap

EventListenerHashMap()

Method Detail

put

public void put(MBase element,
                EventKey key,
                MElementListener listener)

Puts the given listener as listener to the given modelelement and given eventKey in the map.

Parameters:

element -

key -

listener -

remove

public void remove(MBase element,
                   EventKey key,
                   MElementListener listener)

Removes a listener for a given eventkey and a given modelelement.

Parameters:

element -

key -

listener -

remove

public void remove(MBase element)

Removes the complete EventListenerList for the given element.

Parameters:

element -

getListeners

public MElementListener[] getListeners(MBase element,
                                       EventKey key)

Returns all listeners that are registered for the given modelElement and the given EventKey.

Parameters:

element -

key -

Returns:

isEmpty

public boolean isEmpty()

Tests wether there are any listeners registred for any modelelements and eventkeys.

Returns:

true if empty.