edu.umd.cs.jazz.event
Class ZNodeContainerEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--java.awt.AWTEvent
              |
              +--edu.umd.cs.jazz.event.ZNodeContainerEvent

public class ZNodeContainerEvent

extends java.awt.AWTEvent

A low-level event which indicates that a node has changed.

Node events are provided for notification purposes ONLY; Jazz will automatically handle changes to the containers contents internally so that the program works properly regardless of whether the program is receiving these events or not.

This low-level event is generated by a node object when a node transformed, made visible or invisible, and when another node is added to it or removed from it. The event is passed to every ZNodeContainerListener or ZNodeContainerAdapter object which registered to receive such events using the node's addContainerListener method. (ZNodeContainerAdapter objects implement the ZNodeContainerListener interface.) Each such listener object gets this ZNodeContainerEvent when the event occurs.

See Also:

ZNodeContainerAdapter, ZNodeContainerListener, Serialized Form

Field Summary

static int	NODE_ADDED This event indicates that a node was added to the container.
static int	NODE_CONTAINER_FIRST The first number in the range of ids used for container events.
static int	NODE_CONTAINER_LAST The last number in the range of ids used for container events.
static int	NODE_REMOVED This event indicates that a node was removed from the container.

Fields inherited from class java.awt.AWTEvent

ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK

Fields inherited from class java.util.EventObject

source

Constructor Summary

ZNodeContainerEvent(ZNode source, int id, ZNode child)
Constructs a ZNodeContainerEvent object.

Method Summary

ZNode	getChild() Returns the ZNode that was affected by the event.
ZNode	getNode() Returns the originator of the event.

Methods inherited from class java.awt.AWTEvent

consume, finalize, getID, isConsumed, paramString, toString

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

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

Field Detail

NODE_CONTAINER_FIRST

public static final int NODE_CONTAINER_FIRST

The first number in the range of ids used for container events.

NODE_CONTAINER_LAST

public static final int NODE_CONTAINER_LAST

The last number in the range of ids used for container events.

NODE_ADDED

public static final int NODE_ADDED

This event indicates that a node was added to the container.

NODE_REMOVED

public static final int NODE_REMOVED

This event indicates that a node was removed from the container.

Constructor Detail

ZNodeContainerEvent

public ZNodeContainerEvent(ZNode source,
                           int id,
                           ZNode child)

Constructs a ZNodeContainerEvent object.

Parameters:

source - the ZNode object (container) that originated the event

id - an integer indicating the type of event

child - the node that was added or removed

Method Detail

getNode

public ZNode getNode()

Returns the originator of the event.

Returns:

the ZNode object that originated the event

getChild

public ZNode getChild()

Returns the ZNode that was affected by the event.

Returns:

the ZNode object that was added or removed