cytoscape.visual
Class SubjectBase

java.lang.Object
  cytoscape.visual.SubjectBase

Direct Known Subclasses:

AbstractMapping, CustomGraphicsManager, GlobalAppearanceCalculator, VisualMappingManager

public abstract class SubjectBase
extends Object

Abstract Base Class for Subject in the Subject / Observer Pattern. Also Known as Publisher / Subscriber Pattern. A Subject class notifies all its subscribers whenever its state changes. Note that this code duplicates some code in the AbstractCalculator class. May be a good place to refactor in the future.

Field Summary

protected List<ChangeListener>

observers An Array List of All Observers who want to be notified of changes.

Constructor Summary

SubjectBase()

Method Summary

void	addChangeListener(ChangeListener listener) Add a ChangeListener.
void	fireStateChanged() Notifies all listeners that have registered interest for notification on this event type.
void	removeChangeListener(ChangeListener listener) Remove a ChangeListener from the calcaultor.

Methods inherited from class java.lang.Object

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

Field Detail

observers

protected final List<ChangeListener> observers

An Array List of All Observers who want to be notified of changes.

Constructor Detail

SubjectBase

public SubjectBase()

Method Detail

addChangeListener

public void addChangeListener(ChangeListener listener)

Add a ChangeListener. When the state underlying the calculator changes, all ChangeListeners will be notified.

Parameters:

listener - ChangeListener to add

removeChangeListener

public void removeChangeListener(ChangeListener listener)

Remove a ChangeListener from the calcaultor. When the state underlying the calculator changes, all ChangeListeners will be notified.

Parameters:

listener - ChangeListener to add

fireStateChanged

public void fireStateChanged()

Notifies all listeners that have registered interest for notification on this event type.