- java.lang.Object
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- java.util.EventObject
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- java.beans.beancontext.BeanContextEvent
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- java.beans.beancontext.BeanContextMembershipEvent
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- All Implemented Interfaces:
Serializable
public class BeanContextMembershipEvent extends BeanContextEvent
ABeanContextMembershipEventencapsulates the list of children added to, or removed from, the membership of a particularBeanContext. An instance of this event is fired whenever a successful add(), remove(), retainAll(), removeAll(), or clear() is invoked on a givenBeanContextinstance. Objects interested in receiving events of this type must implement theBeanContextMembershipListenerinterface, and must register their intent via theBeanContext'saddBeanContextMembershipListener(BeanContextMembershipListener bcml)method.- Since:
- 1.2
- See Also:
BeanContext,BeanContextEvent,BeanContextMembershipListener, Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected CollectionchildrenThe list of children affected by this event notification.-
Fields declared in class java.beans.beancontext.BeanContextEvent
propagatedFrom
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Fields declared in class java.util.EventObject
source
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Constructor Summary
Constructors Constructor Description BeanContextMembershipEvent(BeanContext bc, Object[] changes)Contruct a BeanContextMembershipEventBeanContextMembershipEvent(BeanContext bc, Collection changes)Contruct a BeanContextMembershipEvent
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleancontains(Object child)Is the child specified affected by the event?Iteratoriterator()Gets the array of children affected by this event.intsize()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
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Methods declared in class java.util.EventObject
getSource, toString
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Field Detail
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children
protected Collection children
The list of children affected by this event notification.
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Constructor Detail
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BeanContextMembershipEvent
public BeanContextMembershipEvent(BeanContext bc, Collection changes)
Contruct a BeanContextMembershipEvent- Parameters:
bc- The BeanContext sourcechanges- The Children affected- Throws:
NullPointerException- ifchangesisnull
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BeanContextMembershipEvent
public BeanContextMembershipEvent(BeanContext bc, Object[] changes)
Contruct a BeanContextMembershipEvent- Parameters:
bc- The BeanContext sourcechanges- The Children effected- Throws:
NullPointerException- if changes associated with this event are null.
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Method Detail
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size
public int size()
Gets the number of children affected by the notification.- Returns:
- the number of children affected by the notification
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contains
public boolean contains(Object child)
Is the child specified affected by the event?- Parameters:
child- the object to check for being affected- Returns:
trueif affected,falseif not
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toArray
public Object[] toArray()
Gets the array of children affected by this event.- Returns:
- the array of children affected
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iterator
public Iterator iterator()
Gets the array of children affected by this event.- Returns:
- the array of children effected
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