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/OpenJDK 21

Class AccessibilityListenerList

java.lang.Object
com.sun.java.accessibility.util.AccessibilityListenerList
public class AccessibilityListenerList extends Object

The AccessibilityListenerList is a copy of the Swing EventListerList class.

Field Summary

Modifier and Type Field Description
protected Object[] listenerList
The list of listener type, listener pairs

Constructor Summary

Constructor Description
AccessibilityListenerList()
Constructs an AccessibilityListenerList.

Method Summary

Modifier and Type Method Description
void add(Class<? extends EventListener> t, EventListener l)
Add the listener as a listener of the specified type.
int getListenerCount()
Returns the total number of listeners for this listener list.
int getListenerCount(Class<? extends EventListener> t)
Return the total number of listeners of the supplied type for this listener list.
Object[] getListenerList()
Passes back the event listener list as an array of listener type, listener pairs.
void remove(Class<? extends EventListener> t, EventListener l)
Remove the listener as a listener of the specified type.
String toString()
Return a string representation of the AccessibilityListenerList.

Methods declared in class java.lang.Object

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

Field Details

listenerList

protected transient Object[] listenerList
The list of listener type, listener pairs

Constructor Details

AccessibilityListenerList

public AccessibilityListenerList()
Constructs an AccessibilityListenerList.

Method Details

getListenerList

public Object[] getListenerList()
Passes back the event listener list as an array of listener type, listener pairs. Note that for performance reasons, this implementation passes back the actual data structure in which the listener data is stored internally. This method is guaranteed to pass back a non-null array, so that no null-checking is required in fire methods. A zero-length array of Object is returned if there are currently no listeners.

Absolutely no modification of the data contained in this array should be made. If any such manipulation is necessary, it should be done on a copy of the array returned rather than the array itself.

Returns:
an array of listener type, listener pairs.

getListenerCount

public int getListenerCount()
Returns the total number of listeners for this listener list.
Returns:
the total number of listeners for this listener list.

getListenerCount

public int getListenerCount(Class<? extends EventListener> t)
Return the total number of listeners of the supplied type for this listener list.
Parameters:
t - the type of the listener to be counted
Returns:
the number of listeners found

add

public void add(Class<? extends EventListener> t, EventListener l)
Add the listener as a listener of the specified type.
Parameters:
t - the type of the listener to be added
l - the listener to be added

remove

public void remove(Class<? extends EventListener> t, EventListener l)
Remove the listener as a listener of the specified type.
Parameters:
t - the type of the listener to be removed
l - the listener to be removed

toString

public String toString()
Return a string representation of the AccessibilityListenerList.
Overrides:
toString in class Object
Returns:
a string representation of the AccessibilityListenerList.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/21/docs/api/jdk.accessibility/com/sun/java/accessibility/util/AccessibilityListenerList.html