edu.umd.cs.jazz.event
Class ZNodeEvent

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

All Implemented Interfaces:

java.io.Serializable, ZEvent

public class ZNodeEvent

extends java.awt.AWTEvent

implements ZEvent, java.io.Serializable

ZNodeEvent is an event which indicates that a node has changed.

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

This event is generated by a ZNode when a node's bounds are changed. The event is passed to every ZNodeListener or ZNodeAdapter object which registered to receive such events using the Node's addNodeListener method. (ZNodeAdapter objects implement the ZNodeListener interface.) Each such listener object gets this ZNodeEvent when the event occurs.

Warning: Serialized and ZSerialized objects of this class will not be compatible with future Jazz releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Jazz. A future release of Jazz will provide support for long term persistence.

Author:

Ben Bederson

See Also:

ZNodeAdapter, ZNodeListener, Serialized Form

NODE_FIRST

public static final int NODE_FIRST

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

See Also:

Constant Field Values

NODE_LAST

public static final int NODE_LAST

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

See Also:

Constant Field Values

BOUNDS_CHANGED

public static final int BOUNDS_CHANGED

This event indicates that a node's bounds changed.

See Also:

Constant Field Values

GLOBAL_BOUNDS_CHANGED

public static final int GLOBAL_BOUNDS_CHANGED

This event indicates that a node's global bounds changed.

See Also:

Constant Field Values

ZNodeEvent

public ZNodeEvent(ZNode source,
                  int id)

Deprecated. as of Jazz 1.1, use createBoundsChangedEvent() or createGlobalBoundsChanged() instead.

Constructs a ZNodeEvent object.

Parameters:

source - the ZNode object that originated the event, and whose bounds have changed.

id - an integer indicating the type of event

ZNodeEvent

protected ZNodeEvent(ZNode source,
                     int id,
                     java.lang.Object dummy)

createBoundsChangedEvent

public static ZNodeEvent createBoundsChangedEvent(ZNode aNode)

Factory method to create a ZNodeEvent with a BOUNDS_CHANGED ID.

createGlobalBoundsChangedEvent

public static ZNodeEvent createGlobalBoundsChangedEvent(ZNode aNode)

Factory method to create a ZNodeEvent with a GLOBAL_BOUNDS_CHANGED ID.

getNode

public ZNode getNode()

Returns the node whose bounds has changed.

Returns:

the ZNode whose bounds has changed.

isConsumed

public boolean isConsumed()

True if this event has been consumed.

Specified by:

isConsumed in interface ZEvent

Overrides:

isConsumed in class java.awt.AWTEvent

consume

public void consume()

Consume this event.

Overrides:

consume in class java.awt.AWTEvent

dispatchTo

public void dispatchTo(java.lang.Object listener)

Calls appropriate method on the listener based on this events ID.

Specified by:

dispatchTo in interface ZEvent

getListenerType

public java.lang.Class getListenerType()

Returns the ZNodeLister class.

Specified by:

getListenerType in interface ZEvent

setSource

public void setSource(java.lang.Object aSource)

Set the souce of this event. As the event is fired up the tree the source of the event will keep changing to reflect the scenegraph object that is firing the event.

Specified by:

setSource in interface ZEvent

Overrides:

setSource in class java.awt.AWTEvent