Module java.desktop
Package 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
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:

  • Field Details

    • children

      protected Collection children
      The list of children affected by this event notification.

  • Constructor Details

    • BeanContextMembershipEvent

      public BeanContextMembershipEvent(BeanContext bc, Collection changes)
      Construct a BeanContextMembershipEvent
      Parameters:
      bc - The BeanContext source
      changes - The Children affected
      Throws:
      NullPointerException - if changes is null

    • BeanContextMembershipEvent

      public BeanContextMembershipEvent(BeanContext bc, Object[] changes)
      Construct a BeanContextMembershipEvent
      Parameters:
      bc - The BeanContext source
      changes - 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

      public boolean contains(Object child)
      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

      public Object[] toArray()
      Gets the array of children affected by this event.
      Returns:
      the array of children affected

    • iterator

      public Iterator iterator()
      Gets the array of children affected by this event.
      Returns:
      the array of children effected