Example usage for javax.swing.event EventListenerList getListenerList

Introduction

In this page you can find the example usage for javax.swing.event EventListenerList getListenerList.

Prototype

public Object[] getListenerList() 

Source Link

Document

Passes back the event listener list as an array of ListenerType-listener pairs.

Usage

From source file:Main.java

public static EventListener[] getListeners(EventListenerList listenerList, Class t) {
    Object[] lList = listenerList.getListenerList();
    int n = getListenerCount(lList, t);
    EventListener[] result = (EventListener[]) java.lang.reflect.Array.newInstance(t, n);
    int j = 0;//w w w . j  a v a  2  s.  c  o m
    for (int i = lList.length - 2; i >= 0; i -= 2) {
        if (lList[i] == t) {
            result[j++] = (EventListener) lList[i + 1];
        }
    }
    return result;
}

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From source file:Main.java

/**
 * Checks if the listener is always registered to the EventListenerList to avoid duplicated registration of the same listener
 *
 * @param list the EventListenerList to register the listener.
 * @param t    the type of the EventListener.
 * @param l    the listener./*from  w w w  .  j  a v  a2 s.co  m*/
 * @return true if already registered. Otherwise false.
 */
public static boolean isListenerRegistered(EventListenerList list, Class t, EventListener l) {
    Object[] objects = list.getListenerList();

    return isListenerRegistered(objects, t, l);
}

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