uk.ac.man.bioinf.sequence.event
Class SequenceListenerSupport

java.lang.Object
  |
  +--uk.ac.man.bioinf.sequence.event.SequenceListenerSupport

public class SequenceListenerSupport

extends Object

SequenceListenerSupport.java This class provides support and handles the listeners to a specific sequence. This ofcourse means there is one support object for one sequence object.

Version:

$Id: SequenceListenerSupport.java,v 1.5 2001/04/11 17:04:43 lord Exp $

Author:

J Selley

See Also:

Created: Wed Feb 16 19:28:44 2000

Constructor Summary

SequenceListenerSupport()

Method Summary

void	addSequenceListener(SequenceListener listener) Adds a sequence listener object to a Vector of listeners.
void	addVetoableSequenceListener(VetoableSequenceListener listener) Adds a vetoable sequence listener to the Vector of listeners.
void	fireSequenceEvent(SequenceEvent event) This function fires the sequence event to all the interested listeners.
void	fireVetoableSequenceEvent(VetoableSequenceEvent event) This function fires the vetoable event to the vetoable listeners.
boolean	hasListeners() There is really no point in making an event object if there are no listeners.
void	removeSequenceListener(SequenceListener listener) Removes a sequence listener.
void	removeVetoableSequenceListener(VetoableSequenceListener listener) Removes a vetoable sequence listener.

Methods inherited from class java.lang.Object

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

Constructor Detail

SequenceListenerSupport

public SequenceListenerSupport()

Method Detail

hasListeners

public boolean hasListeners()

There is really no point in making an event object if there are no listeners. This method allows other classes to be intelligent about the way it does things.

Returns:

a boolean value

fireSequenceEvent

public void fireSequenceEvent(SequenceEvent event)

This function fires the sequence event to all the interested listeners. It also fires to the vetoable listeners, which are stored separately, because the interface for VetoableSequenceListener extends the SequenceListener interface.

Parameters:

event - the event to be fired

See Also:

VetoableSequenceListener, SequenceListener

fireVetoableSequenceEvent

public void fireVetoableSequenceEvent(VetoableSequenceEvent event)
                               throws SequenceVetoException

This function fires the vetoable event to the vetoable listeners.

Parameters:

event - the event to be fired

SequenceVetoException

addSequenceListener

public void addSequenceListener(SequenceListener listener)

Adds a sequence listener object to a Vector of listeners.

Parameters:

listener - the sequence listener

removeSequenceListener

public void removeSequenceListener(SequenceListener listener)

Removes a sequence listener.

Parameters:

listener - the sequence listener

addVetoableSequenceListener

public void addVetoableSequenceListener(VetoableSequenceListener listener)

Adds a vetoable sequence listener to the Vector of listeners.

Parameters:

listener - the vetoable sequence listener

removeVetoableSequenceListener

public void removeVetoableSequenceListener(VetoableSequenceListener listener)

Removes a vetoable sequence listener.

Parameters:

listener - the vetoable sequence listener