net.sourceforge.spark.framework
Class Atom

java.lang.Object
  net.sourceforge.spark.framework.Widget
      net.sourceforge.spark.framework.Atom

All Implemented Interfaces:

CommandHolder, org.w3c.dom.events.EventListener, Subject

public abstract class Atom

extends Widget

implements Subject

The Atom class is a widget type that may contain no other widgets. It is the most basic and primitive widget type. It is generally contained within a Container widget class.

An example of an Atom widget is a Radiobutton.

The Atom widget implements the Subject interface.

$Source: /cvsroot/spark/spark/source/java/net/sourceforge/spark/framework/Atom.java,v $

 $Log: Atom.java,v $
 Revision 1.2  2005/07/24 04:03:28  afettes
 no message

 Revision 1.1  2005/07/24 03:55:32  afettes
 Initial commit to CVS.
 

Version:

$Revision: 1.2 $ - $Date: 2005/07/24 04:03:28 $

Author:

$Author: afettes $, Alastair Fettes

See Also:

Widget, Subject, Observer

Field Summary

private java.util.Vector

m_vpObservers List of this atoms Observers.

Fields inherited from class net.sourceforge.spark.framework.Widget

ID, TYPE

Constructor Summary

Atom(java.lang.String id, java.lang.String type)
Create a new Atom object with the given id.

Method Summary

void	attach(Observer in_observer) The observer to be attached.
void	detach(Observer in_observer) The observer to be detached.
protected void	notifyObservers() Notify all observers of the state change.

Methods inherited from class net.sourceforge.spark.framework.Widget

addCommand, getState, handleEvent, removeCommand, runCommands, setState

Methods inherited from class java.lang.Object

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

Field Detail

m_vpObservers

private java.util.Vector m_vpObservers

List of this atoms Observers.

Constructor Detail

Atom

public Atom(java.lang.String id,
            java.lang.String type)

Create a new Atom object with the given id.

Parameters:

id - The id for the widget.

Method Detail

attach

public void attach(Observer in_observer)

The observer to be attached. It will now be observering this subject.

Specified by:

attach in interface Subject

Parameters:

in_observer - The observer to add.

detach

public void detach(Observer in_observer)

The observer to be detached. It will no longer be observering this subject.

Specified by:

detach in interface Subject

Parameters:

in_observer - The observer to remove.

notifyObservers

protected void notifyObservers()

Notify all observers of the state change.