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diva.graph
Class GraphViewEvent

java.lang.Object
 extended byjava.util.EventObject
 extended bydiva.graph.GraphViewEvent

All Implemented Interfaces:

java.io.Serializable

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public class GraphViewEvent

extends java.util.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:

$Id: GraphViewEvent.java,v 1.14 2005年07月08日 19:55:02 cxh Exp $

Author:

Michael Shilman, Steve Neuendorffer

See Also:

GraphController, Serialized Form

Accepted Rating:

Red

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Field Summary
static int	EDGE_DRAWN The given edge was just drawn.
static int	EDGE_ROUTED The connector representing an edge was just routed.
static int	NODE_DRAWN The given node was just drawn.
static int	NODE_MOVED The figure representing a node was moved.

Fields inherited from class java.util.EventObject

source

Constructor Summary

GraphViewEvent(java.lang.Object source, int id, java.lang.Object target) Construct a GraphViewEvent with the given source and target and a null previous value.

GraphViewEvent(java.lang.Object source, int id, java.lang.Object target, java.lang.Object oldValue) Construct a GraphViewEvent with the given source, target, and previous value.

Method Summary
int	getID() Return the type id for this event.
java.lang.Object	getOldValue() Return the old value, which is event-specific.
java.lang.Object	getTarget() Return the target value, which is event-specific.
java.lang.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.

See Also:

Constant Field Values

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EDGE_ROUTED

public static final int EDGE_ROUTED

The connector representing an edge was just routed.

See Also:

Constant Field Values

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NODE_DRAWN

public static final int NODE_DRAWN

The given node was just drawn.

See Also:

Constant Field Values

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EDGE_DRAWN

public static final int EDGE_DRAWN

The given edge was just drawn.

See Also:

Constant Field Values

Constructor Detail

GraphViewEvent

public GraphViewEvent(java.lang.Object source,
 int id,
 java.lang.Object target)

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

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GraphViewEvent

public GraphViewEvent(java.lang.Object source,
 int id,
 java.lang.Object target,
 java.lang.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.

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getTarget

public java.lang.Object getTarget()

Return the target value, which is event-specific.

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getOldValue

public java.lang.Object getOldValue()

Return the old value, which is event-specific.

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toString

public java.lang.String toString()

Return a string representation of this event.

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