javax.swing.event
Class SwingPropertyChangeSupport
- Serializable
- Serialized Form
addPropertyChangeListener , addPropertyChangeListener , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , getPropertyChangeListeners , getPropertyChangeListeners , hasListeners , removePropertyChangeListener , removePropertyChangeListener |
clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait |
firePropertyChange
public void firePropertyChange(PropertyChangeEvent event)
Forwards
event
to registered listeners.
Note that if the event's
getOldValue()
and
getNewValue()
methods return non-null and equal values, no
listeners will be notified.
- firePropertyChange in interface PropertyChangeSupport
event
- the event.
getPropertyChangeListeners
public PropertyChangeListener[] getPropertyChangeListeners(String propertyName)
Returns an array of all listeners that are registered to receive
notification of changes to the named property. This includes the general
listeners as well as those registered specifically for the named
property.
- getPropertyChangeListeners in interface PropertyChangeSupport
propertyName
- the property name.
- An array of all listeners for the named property.
hasListeners
public boolean hasListeners(String propertyName)
Tell whether the specified property is being listened on or not. This
will only return true
if there are listeners on all
properties or if there is a listener specifically on this property.
- hasListeners in interface PropertyChangeSupport
propertyName
- the property that may be listened on
- whether the property is being listened on
NullPointerException
- if propertyName is null
removePropertyChangeListener
public void removePropertyChangeListener(String propertyName,
PropertyChangeListener listener)
Removes listener
from the list of registered listeners for
the named property, so that it will no longer receive notification of
property change events.
- removePropertyChangeListener in interface PropertyChangeSupport
propertyName
- the property name.listener
- the listener to remove.
SwingPropertyChangeSupport.java --
Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
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