Module jdk.accessibility
Package com.sun.java.accessibility.util

Class AccessibilityListenerList


  • public class AccessibilityListenerList
extends Object

    The AccessibilityListenerList is a copy of the Swing EventListerList class.

    • Field Detail

      • listenerList

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

    • Constructor Detail

      • AccessibilityListenerList

        public AccessibilityListenerList​()

    • Method Detail

      • 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.