A helper class for observing changes in bound bean properties
where the target bean changes.
Provides two access styles to the target bean that holds the observed
property: you can specify a bean directly,
or you can use a bean channel to access the bean indirectly.
In the latter case you specify a ValueModel
that holds the bean that in turn holds the observed properties.
If the target bean is null, it won't report any changes.
It is recommended to remove all listener by invoking #removeAll
if the observed bean lives much longer than this change support instance.
As an alternative you may use event listener lists that are based
on WeakReferences.
Constraints: All target bean classes must support
bound properties, i. e. must provide the following pair of methods
for registration of multicast property change event listeners:
public void addPropertyChangeListener(PropertyChangeListener x);
public void removePropertyChangeListener(PropertyChangeListener x);
and the following methods for listening on named properties:
public void addPropertyChangeListener(String, PropertyChangeListener x);
public void removePropertyChangeListener(String, PropertyChangeListener x);
author:
Karsten Lentzsch
version:
$Revision: 1.7 $
See Also: PropertyChangeEvent
See Also: PropertyChangeListener
See Also: PropertyChangeSupport
See Also: com.jgoodies.binding.beans.BeanAdapter | 