edu.rice.cs.drjava.ui.avail
Class AndGUIAvailabilityListener

java.lang.Object
  edu.rice.cs.drjava.ui.avail.AndGUIAvailabilityListener

All Implemented Interfaces:

GUIAvailabilityListener

Direct Known Subclasses:

AndGUIAvailabilityActionAdapter, AndGUIAvailabilityComponentAdapter

public abstract class AndGUIAvailabilityListener
extends Object
implements GUIAvailabilityListener

Listener responding to the availability of several GUI components.

Version:

$Id: AndGUIAvailabilityListener.java 5355 2010-08-11 21:20:32Z mgricken $

Nested Class Summary

Nested classes/interfaces inherited from interface edu.rice.cs.drjava.ui.avail.GUIAvailabilityListener

GUIAvailabilityListener.ComponentType

Field Summary

protected HashSet<GUIAvailabilityListener.ComponentType>	_components
protected boolean	_lastValue
protected GUIAvailabilityNotifier	_notifier

Constructor Summary

AndGUIAvailabilityListener(GUIAvailabilityNotifier notifier, GUIAvailabilityListener.ComponentType... components)
Create a listener that responds to changes in availability of several GUI components.

Method Summary

abstract void	availabilityChanged(boolean available) Called when the combined availability of all components changes.
void	availabilityChanged(GUIAvailabilityListener.ComponentType component, boolean available) Called when a component's availability changes.
boolean	isAvailable()

Methods inherited from class java.lang.Object

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

Field Detail

_components

protected final HashSet<GUIAvailabilityListener.ComponentType> _components

_notifier

protected final GUIAvailabilityNotifier _notifier

_lastValue

protected volatile boolean _lastValue

Constructor Detail

AndGUIAvailabilityListener

public AndGUIAvailabilityListener(GUIAvailabilityNotifier notifier,
                                  GUIAvailabilityListener.ComponentType... components)

Create a listener that responds to changes in availability of several GUI components.

Parameters:

components - components that must be available

Method Detail

isAvailable

public boolean isAvailable()

Returns:

true if all required components are available

availabilityChanged

public void availabilityChanged(GUIAvailabilityListener.ComponentType component,
                                boolean available)

Called when a component's availability changes.

Specified by:

availabilityChanged in interface GUIAvailabilityListener

Parameters:

component - the component whose availability changed

available - true if component is available

availabilityChanged

public abstract void availabilityChanged(boolean available)

Called when the combined availability of all components changes.

Parameters:

available - true if all components are available