salvo.jesus.graph.listener

Class SimplePathListener

java.lang.Object

salvo.jesus.graph.listener.NullGraphListener

salvo.jesus.graph.listener.SimplePathListener

All Implemented Interfaces:

Serializable, EventListener, GraphListener, AbstractPathListener

Direct Known Subclasses:

CyclePathListener

public class SimplePathListener
extends NullGraphListener
implements AbstractPathListener

SimplePathListener imposes a simple path structure on a Graph. It can be used as a delegate by any class which wants to implement the SimplePath interface.

Version:

$Id: SimplePathListener.java,v 1.1 2002/03/12 07:48:34 perfecthash Exp $

Author:

John V. Sichi

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SimplePathListener(SimplePath simplePath) Creates a new SimplePathListener for the given SimplePath.

Method Summary

Modifier and Type	Method and Description
void	afterEdgeAdded(GraphAddEdgeEvent event) Called when an edge is being added to a graph, just after the graph structure has actually been changed.
void	afterEdgeRemoved(GraphRemoveEdgeEvent event) Called when an edge is being removed from a graph, just after the graph structure has actually been changed.
void	afterVertexAdded(GraphAddVertexEvent event) Called when a vertex is being added to a graph, just after the graph structure has actually been changed.
void	afterVertexRemoved(GraphRemoveVertexEvent event) Called when a vertex is being removed from a graph, just after the graph structure has actually been changed.
void	beforeEdgeAdded(GraphAddEdgeEvent event) Called when an edge is being added to a graph, just before the graph structure is actually changed.
void	beforeEdgeRemoved(GraphRemoveEdgeEvent event) Called when an edge is being removed from a graph, just before the graph structure is actually changed.
void	beforeVertexAdded(GraphAddVertexEvent event) Called when a vertex is being added to a graph, just before the graph structure is actually changed.
Vertex	getFirstVertex()
Vertex	getLastVertex()
protected SimplePath	getPath()
protected boolean	isEndpoint(Vertex v)
void	remove()

Methods inherited from class salvo.jesus.graph.listener.NullGraphListener

beforeVertexRemoved

Methods inherited from class java.lang.Object

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

Methods inherited from interface salvo.jesus.graph.GraphListener

beforeVertexRemoved

Constructor Detail

SimplePathListener

public SimplePathListener(SimplePath simplePath)

Creates a new SimplePathListener for the given SimplePath.

Parameters:

simplePath - the graph to which this listener is to be attached; this constructor will automatically register the listener to receive all events

Method Detail

getFirstVertex

public Vertex getFirstVertex()

Specified by:

getFirstVertex in interface AbstractPathListener

See Also:

Path.getFirstVertex()

getLastVertex

public Vertex getLastVertex()

Specified by:

getLastVertex in interface AbstractPathListener

See Also:

Path.getLastVertex()

getPath

protected SimplePath getPath()

remove

public void remove()
            throws Exception

Throws:

Exception

See Also:

Path.remove()

beforeVertexAdded

public void beforeVertexAdded(GraphAddVertexEvent event)
                       throws Exception

Description copied from interface: GraphListener

Called when a vertex is being added to a graph, just before the graph structure is actually changed.

Specified by:

beforeVertexAdded in interface GraphListener

Overrides:

beforeVertexAdded in class NullGraphListener

Parameters:

event - the event describing the vertex addition

Throws:

Exception

afterVertexAdded

public void afterVertexAdded(GraphAddVertexEvent event)

Description copied from interface: GraphListener

Called when a vertex is being added to a graph, just after the graph structure has actually been changed.

Specified by:

afterVertexAdded in interface GraphListener

Overrides:

afterVertexAdded in class NullGraphListener

Parameters:

event - the event describing the vertex addition

afterVertexRemoved

public void afterVertexRemoved(GraphRemoveVertexEvent event)

Description copied from interface: GraphListener

Called when a vertex is being removed from a graph, just after the graph structure has actually been changed.

Specified by:

afterVertexRemoved in interface GraphListener

Overrides:

afterVertexRemoved in class NullGraphListener

Parameters:

event - the event describing the vertex removal

beforeEdgeAdded

public void beforeEdgeAdded(GraphAddEdgeEvent event)
                     throws Exception

Description copied from interface: GraphListener

Called when an edge is being added to a graph, just before the graph structure is actually changed.

Specified by:

beforeEdgeAdded in interface GraphListener

Overrides:

beforeEdgeAdded in class NullGraphListener

Parameters:

event - the event describing the edge addition

Throws:

Exception

afterEdgeAdded

public void afterEdgeAdded(GraphAddEdgeEvent event)

Description copied from interface: GraphListener

Called when an edge is being added to a graph, just after the graph structure has actually been changed.

Specified by:

afterEdgeAdded in interface GraphListener

Overrides:

afterEdgeAdded in class NullGraphListener

Parameters:

event - the event describing the edge addition

isEndpoint

protected boolean isEndpoint(Vertex v)

beforeEdgeRemoved

public void beforeEdgeRemoved(GraphRemoveEdgeEvent event)
                       throws Exception

Description copied from interface: GraphListener

Called when an edge is being removed from a graph, just before the graph structure is actually changed.

Specified by:

beforeEdgeRemoved in interface GraphListener

Overrides:

beforeEdgeRemoved in class NullGraphListener

Parameters:

event - the event describing the edge removal

Throws:

Exception

afterEdgeRemoved

public void afterEdgeRemoved(GraphRemoveEdgeEvent event)

Description copied from interface: GraphListener

Called when an edge is being removed from a graph, just after the graph structure has actually been changed.

Specified by:

afterEdgeRemoved in interface GraphListener

Overrides:

afterEdgeRemoved in class NullGraphListener

Parameters:

event - the event describing the edge removal