java.beans.beancontext

Class BeanContextMembershipEvent

java.lang.Object

java.util.EventObject

java.beans.beancontext.BeanContextEvent

java.beans.beancontext.BeanContextMembershipEvent

All Implemented Interfaces:

Serializable

public class BeanContextMembershipEvent
extends BeanContextEvent

Event fired when children are added to or removed from a BeanContext. Whether they were added or removed depends entirely on which method of the listener interface was called.

Since:

1.2

See Also:

BeanContextMembershipListener, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Collection	children The children that were added or removed.

Fields inherited from class java.beans.beancontext.BeanContextEvent

propagatedFrom

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor and Description
BeanContextMembershipEvent(BeanContext context, Collection children) Create a new membership event.
BeanContextMembershipEvent(BeanContext context, Object[] children) Create a new membership event.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(Object child) Tell whether the Object is one of the children added or removed.
Iterator	iterator() An iterator that will step through all the children.
int	size() The number of children removed or added.
Object[]	toArray() An array of the children.

Methods inherited from class java.beans.beancontext.BeanContextEvent

getBeanContext, getPropagatedFrom, isPropagated, setPropagatedFrom

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Field Detail

children

protected Collection children

The children that were added or removed.

Constructor Detail

BeanContextMembershipEvent

public BeanContextMembershipEvent(BeanContext context,
                          Collection children)

Create a new membership event.

Parameters:

context - the event source.

children - the children added to or removed from the source.

BeanContextMembershipEvent

public BeanContextMembershipEvent(BeanContext context,
                          Object[] children)

Create a new membership event.

Parameters:

context - the event source.

children - the children added to or removed from the source.

Method Detail

size

public int size()

The number of children removed or added.

Returns:

the number of children removed or added.

iterator

public Iterator iterator()

An iterator that will step through all the children.

Returns:

an iterator over all the children.

toArray

public Object[] toArray()

An array of the children.

Returns:

an array of the children.

contains

public boolean contains(Object child)

Tell whether the Object is one of the children added or removed.

Parameters:

child - the child to check.

Returns:

whether the Object is added or removed.