java.lang.Object
java.util.EventObject
java.beans.beancontext.BeanContextEvent
java.beans.beancontext.BeanContextMembershipEvent
- All Implemented Interfaces:
Serializable
public class BeanContextMembershipEvent extends BeanContextEvent
A
BeanContextMembershipEvent
encapsulates
the list of children added to, or removed from,
the membership of a particular BeanContext
.
An instance of this event is fired whenever a successful
add(), remove(), retainAll(), removeAll(), or clear() is
invoked on a given BeanContext
instance.
Objects interested in receiving events of this type must
implement the BeanContextMembershipListener
interface, and must register their intent via the
BeanContext
's
addBeanContextMembershipListener(BeanContextMembershipListener bcml)
method.- Since:
- 1.2
- See Also:
BeanContext
,BeanContextEvent
,BeanContextMembershipListener
, Serialized Form
-
Field Summary
Fields Modifier and Type Field Description protected Collection
children
The list of children affected by this event notification. -
Constructor Summary
Constructors Constructor Description BeanContextMembershipEvent(BeanContext bc, Object[] changes)
Contruct a BeanContextMembershipEventBeanContextMembershipEvent(BeanContext bc, Collection changes)
Contruct a BeanContextMembershipEvent -
Method Summary
Modifier and Type Method Description boolean
contains(Object child)
Is the child specified affected by the event?Iterator
iterator()
Gets the array of children affected by this event.int
size()
Gets the number of children affected by the notification.Object[]
toArray()
Gets the array of children affected by this event.Methods declared in class java.beans.beancontext.BeanContextEvent
getBeanContext, getPropagatedFrom, isPropagated, setPropagatedFrom
-
Field Details
-
children
The list of children affected by this event notification.
-
-
Constructor Details
-
BeanContextMembershipEvent
Contruct a BeanContextMembershipEvent- Parameters:
bc
- The BeanContext sourcechanges
- The Children affected- Throws:
NullPointerException
- ifchanges
isnull
-
BeanContextMembershipEvent
Contruct a BeanContextMembershipEvent- Parameters:
bc
- The BeanContext sourcechanges
- The Children effected- Throws:
NullPointerException
- if changes associated with this event are null.
-
-
Method Details
-
size
public int size()Gets the number of children affected by the notification.- Returns:
- the number of children affected by the notification
-
contains
Is the child specified affected by the event?- Parameters:
child
- the object to check for being affected- Returns:
true
if affected,false
if not
-
toArray
Gets the array of children affected by this event.- Returns:
- the array of children affected
-
iterator
Gets the array of children affected by this event.- Returns:
- the array of children effected
-