How to use

size

method

in

org.apache.batik.dom.events.EventListenerList

/**
 * Unregisters an implementation event listener.
 */
public void removeImplementationEventListenerNS(String namespaceURI,
                        String type,
                        EventListener listener,
                        boolean useCapture) {
  HashMap<String, EventListenerList> listeners = useCapture
    ? capturingImplementationListeners : bubblingImplementationListeners;
  if (listeners == null) {
    return;
  }
  EventListenerList list = listeners.get(type);
  if (list == null) {
    return;
  }
  list.removeListener(namespaceURI, listener);
  if (list.size() == 0) {
    listeners.remove(type);
  }
}

/**
 * Unregisters an implementation event listener.
 */
public void removeImplementationEventListenerNS(String namespaceURI,
                        String type,
                        EventListener listener,
                        boolean useCapture) {
  HashMap<String, EventListenerList> listeners = useCapture
    ? capturingImplementationListeners : bubblingImplementationListeners;
  if (listeners == null) {
    return;
  }
  EventListenerList list = listeners.get(type);
  if (list == null) {
    return;
  }
  list.removeListener(namespaceURI, listener);
  if (list.size() == 0) {
    listeners.remove(type);
  }
}

/**
 * Deregisters an event listener.
 */
public void removeEventListenerNS(String namespaceURI,
                 String type,
                 EventListener listener,
                 boolean useCapture) {
  HashMap<String, EventListenerList> listeners;
  if (useCapture) {
    listeners = capturingListeners;
  } else {
    listeners = bubblingListeners;
  }
  if (listeners == null) {
    return;
  }
  EventListenerList list = listeners.get(type);
  if (list != null) {
    list.removeListener(namespaceURI, listener);
    if (list.size() == 0) {
      listeners.remove(type);
    }
  }
}

/**
 * Deregisters an event listener.
 */
public void removeEventListenerNS(String namespaceURI,
                 String type,
                 EventListener listener,
                 boolean useCapture) {
  HashMap<String, EventListenerList> listeners;
  if (useCapture) {
    listeners = capturingListeners;
  } else {
    listeners = bubblingListeners;
  }
  if (listeners == null) {
    return;
  }
  EventListenerList list = listeners.get(type);
  if (list != null) {
    list.removeListener(namespaceURI, listener);
    if (list.size() == 0) {
      listeners.remove(type);
    }
  }
}

/**
 * Unregisters an implementation event listener.
 */
public void removeImplementationEventListenerNS(String namespaceURI,
                        String type,
                        EventListener listener,
                        boolean useCapture) {
  HashTable listeners = useCapture ? capturingImplementationListeners
                   : bubblingImplementationListeners;
  if (listeners == null) {
    return;
  }
  EventListenerList list = (EventListenerList) listeners.get(type);
  if (list == null) {
    return;
  }
  list.removeListener(namespaceURI, listener);
  if (list.size() == 0) {
    listeners.remove(type);
  }
}

/**
 * Deregisters an event listener.
 */
public void removeEventListenerNS(String namespaceURI,
                 String type,
                 EventListener listener,
                 boolean useCapture) {
  HashTable listeners;
  if (useCapture) {
    listeners = capturingListeners;
  } else {
    listeners = bubblingListeners;
  }
  if (listeners == null) {
    return;
  }
  EventListenerList list = (EventListenerList) listeners.get(type);
  if (list != null) {
    list.removeListener(namespaceURI, listener);
    if (list.size() == 0) {
      listeners.remove(type);
    }
  }
}