com.sun.java.accessibility.util

Class AccessibilityEventMonitor

java.lang.Object

com.sun.java.accessibility.util.AccessibilityEventMonitor

@Exported
public class AccessibilityEventMonitor
extends Object

AccessibilityEventMonitor implements a PropertyChange listener on every UI object that implements interface Accessible in the Java Virtual Machine. The events captured by these listeners are made available through listeners supported by AccessibilityEventMonitor. With this, all the individual events on each of the UI object instances are funneled into one set of PropertyChange listeners.

This class depends upon EventQueueMonitor, which provides the base level support for capturing the top-level containers as they are created.

Field Summary

Fields

Modifier and Type	Field and Description
protected static com.sun.java.accessibility.util.AccessibilityEventMonitor.AccessibilityEventListener	accessibilityListener The actual listener that is installed on the component instances.
protected static AccessibilityListenerList	listenerList The current list of registered PropertyChangeListener classes.

Constructor Summary

Constructors

Constructor and Description
AccessibilityEventMonitor()

Method Summary

Modifier and Type	Method and Description
static void	addPropertyChangeListener(PropertyChangeListener l) Adds the specified listener to receive all PropertyChange events on each UI object instance in the Java Virtual Machine as they occur.
static void	removePropertyChangeListener(PropertyChangeListener l) Removes the specified listener so it no longer receives PropertyChange events when they occur.

Methods inherited from class java.lang.Object

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

Field Detail

listenerList

protected static final AccessibilityListenerList listenerList

The current list of registered PropertyChangeListener classes.

See Also:

addPropertyChangeListener(java.beans.PropertyChangeListener), removePropertyChangeListener(java.beans.PropertyChangeListener)

accessibilityListener

protected static final com.sun.java.accessibility.util.AccessibilityEventMonitor.AccessibilityEventListener accessibilityListener

The actual listener that is installed on the component instances. This listener calls the other registered listeners when an event occurs. By doing things this way, the actual number of listeners installed on a component instance is drastically reduced.

Constructor Detail

AccessibilityEventMonitor

public AccessibilityEventMonitor()

Method Detail

addPropertyChangeListener

public static void addPropertyChangeListener(PropertyChangeListener l)

Adds the specified listener to receive all PropertyChange events on each UI object instance in the Java Virtual Machine as they occur.

Note: This listener is automatically added to all component instances created after this method is called. In addition, it is only added to UI object instances that support this listener type.

Parameters:

l - the listener to add

See Also:

removePropertyChangeListener(java.beans.PropertyChangeListener)

removePropertyChangeListener

public static void removePropertyChangeListener(PropertyChangeListener l)

Removes the specified listener so it no longer receives PropertyChange events when they occur.

Parameters:

l - the listener to remove

See Also:

addPropertyChangeListener(java.beans.PropertyChangeListener)