com.phoenixst.plexus.util
Class ObservableGraphDelegate

java.lang.Object
  com.phoenixst.plexus.util.ObservableGraphDelegate

public class ObservableGraphDelegate
extends Object

A helper class providing functionality to help implement ObservableGraph.

Since:

1.0

Version:

$Revision: 1.20 $

Author:

Ray A. Conner

Constructor Summary

ObservableGraphDelegate(Graph graph)
Creates a new ObservableGraphDelegate, which logs to a category corresponding to this class at the DEBUG level.

ObservableGraphDelegate(Graph graph, org.apache.log4j.Logger logger)
Creates a new ObservableGraphDelegate, which uses the specified logger at the DEBUG level.

ObservableGraphDelegate(Graph graph, org.apache.log4j.Logger logger, org.apache.log4j.Level level)
Creates a new ObservableGraphDelegate.

Method Summary

void	addGraphListener(GraphListener listener) Adds the specified GraphListener.
void	fireEdgeAdded(Graph.Edge edge) Sends edge added event to registered listeners.
void	fireEdgeRemoved(Graph.Edge edge) Sends edge removed event to registered listeners.
void	fireNodeAdded(Object node) Sends node added event to registered listeners.
void	fireNodeRemoved(Object node) Sends node removed event to registered listeners.
GraphListener[]	getGraphListeners() Returns an array containing the currently registered GraphListeners.
boolean	hasListeners() Returns whether or not this delegate has any listeners.
void	removeAllGraphListeners() Removes all currently registered GraphListeners.
void	removeGraphListener(GraphListener listener) Removes a previously added GraphListener.

Methods inherited from class java.lang.Object

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

Constructor Detail

ObservableGraphDelegate

public ObservableGraphDelegate(Graph graph)

Creates a new ObservableGraphDelegate, which logs to a category corresponding to this class at the DEBUG level.

ObservableGraphDelegate

public ObservableGraphDelegate(Graph graph,
                               org.apache.log4j.Logger logger)

Creates a new ObservableGraphDelegate, which uses the specified logger at the DEBUG level.

ObservableGraphDelegate

public ObservableGraphDelegate(Graph graph,
                               org.apache.log4j.Logger logger,
                               org.apache.log4j.Level level)

Creates a new ObservableGraphDelegate.

Method Detail

addGraphListener

public void addGraphListener(GraphListener listener)

Adds the specified GraphListener.

removeGraphListener

public void removeGraphListener(GraphListener listener)

Removes a previously added GraphListener.

hasListeners

public boolean hasListeners()

Returns whether or not this delegate has any listeners.

getGraphListeners

public GraphListener[] getGraphListeners()

Returns an array containing the currently registered GraphListeners.

removeAllGraphListeners

public void removeAllGraphListeners()

Removes all currently registered GraphListeners.

fireNodeAdded

public void fireNodeAdded(Object node)

Sends node added event to registered listeners.

fireNodeRemoved

public void fireNodeRemoved(Object node)

Sends node removed event to registered listeners.

fireEdgeAdded

public void fireEdgeAdded(Graph.Edge edge)

Sends edge added event to registered listeners.

fireEdgeRemoved

public void fireEdgeRemoved(Graph.Edge edge)

Sends edge removed event to registered listeners.