diva.graphx.event

Class GraphViewEvent

java.lang.Object

java.util.EventObject

diva.graphx.event.GraphViewEvent

All Implemented Interfaces:

Serializable

public class GraphViewEvent
extends EventObject

A graph view event that is emitted when anything interesting happens inside a graph view. The source of a event is the GraphController that issued the event.

Each graph event contains an ID and a previous value for all changes and deletions, the specifics of which are described on a case-by-case basis below.

Version:

$Revision: 1.2 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu), Steve Neuendorffer (neuendor@eecs.berkeley.edu)

See Also:

GraphController, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	EDGE_DRAWN The given edge was just drawn, redrawn, or removed.
static int	EDGE_ROUTED The connector representing an edge was just routed.
static int	NODE_DRAWN The given node was just drawn, redrawn, or removed.
static int	NODE_MOVED The figure representing a node was moved.

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor and Description
GraphViewEvent(Object source, int id, Object target) Construct a GraphViewEvent with the given source and target and a null previous value.
GraphViewEvent(Object source, int id, Object target, Object oldValue) Construct a GraphViewEvent with the given source, target, and previous value.

Method Summary

Modifier and Type	Method and Description
int	getID() Return the type id for this event.
Object	getOldValue() Return the old value, which is event-specific.
Object	getTarget() Return the target value, which is event-specific.
String	toString() Return a string representation of this event.

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

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

Field Detail

NODE_MOVED

public static final int NODE_MOVED

The figure representing a node was moved. The target parameter will be set to the moved figure.

See Also:

Constant Field Values

EDGE_ROUTED

public static final int EDGE_ROUTED

The connector representing an edge was just routed. The target parameter will be set to the rerouted edge.

See Also:

Constant Field Values

NODE_DRAWN

public static final int NODE_DRAWN

The given node was just drawn, redrawn, or removed. The target and oldValue parameters will be set to the drawn figure and null; the redrawn figure and the redrawn figure; or null and the removed figure respectively.

See Also:

Constant Field Values

EDGE_DRAWN

public static final int EDGE_DRAWN

The given edge was just drawn, redrawn, or removed. The target and oldValue parameters will be set to the drawn figure and null; the redrawn figure and the redrawn figure; or null and the removed figure respectively.

See Also:

Constant Field Values

Constructor Detail

GraphViewEvent

public GraphViewEvent(Object source,
                      int id,
                      Object target)

Construct a GraphViewEvent with the given source and target and a null previous value.

GraphViewEvent

public GraphViewEvent(Object source,
                      int id,
                      Object target,
                      Object oldValue)

Construct a GraphViewEvent with the given source, target, and previous value.

Method Detail

getID

public int getID()

Return the type id for this event.

getTarget

public Object getTarget()

Return the target value, which is event-specific.

getOldValue

public Object getOldValue()

Return the old value, which is event-specific.

toString

public String toString()

Return a string representation of this event.

Overrides:

toString in class EventObject