Package org.biojava.utils

Class ChangeListener.ChangeEventRecorder

java.lang.Object

org.biojava.utils.ChangeAdapter

org.biojava.utils.ChangeListener.ChangeEventRecorder

All Implemented Interfaces:

EventListener, ChangeListener

Enclosing interface:

ChangeListener

public static class ChangeListener.ChangeEventRecorder
extends ChangeAdapter

A listener that remembers the ChangeEvent of the last change. Mostly for debugging.

Since:

1.5

Author:

Mark Schreiber

Nested Class Summary

Nested classes/interfaces inherited from interface org.biojava.utils.ChangeListener

ChangeListener.AlwaysVetoListener, ChangeListener.ChangeEventRecorder, ChangeListener.LoggingListener

Field Summary

Fields inherited from interface org.biojava.utils.ChangeListener

ALWAYS_VETO, LOG_TO_OUT

Constructor Summary

Constructors

Constructor	Description
ChangeEventRecorder()

Method Summary

Modifier and Type	Method	Description
ChangeEvent	getEvent()
void	preChange(ChangeEvent cev)	Called before a change takes place.

Methods inherited from class org.biojava.utils.ChangeAdapter

postChange

Methods inherited from class java.lang.Object

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

Constructor Detail

ChangeEventRecorder

public ChangeEventRecorder()

Method Detail

getEvent

public ChangeEvent getEvent()

preChange

public void preChange(ChangeEvent cev)
               throws ChangeVetoException

Description copied from interface: ChangeListener

Called before a change takes place.

This is your chance to stop the change by throwing a ChangeVetoException. This method does not indicate that the change will definitely take place, so it is not recomended that you take any positive action within this handler.

Specified by:

preChange in interface ChangeListener

Overrides:

preChange in class ChangeAdapter

Parameters:

cev - An event encapsulating the change which is about to take place.

Throws:

ChangeVetoException - Description of Exception