Package java.util

Examples of java.util.EventListener

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     * @param oldl the listener to be removed
     */
    protected EventListener remove(EventListener oldl) {
        if (oldl == a)  return b;
        if (oldl == b)  return a;
        EventListener a2 = removeInternal(a, oldl);
        EventListener b2 = removeInternal(b, oldl);
        if (a2 == a && b2 == b) {
            return this;        // it's not here
        }
        return addInternal(a2, b2);
    }
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     * @see #getDragSourceListeners
     * @see #getDragSourceMotionListeners
     * @since 1.4
     */
    public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
        EventListener l = null;
        if (listenerType == DragSourceListener.class) {
            l = listener;
        } else if (listenerType == DragSourceMotionListener.class) {
            l = motionListener;
        }
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    Object[] lList = listenerList;
    s.defaultWriteObject();
 
    // Save the non-null event listeners:
    for (int i = 0; i < lList.length; i+=1) {
      EventListener l = (EventListener)lList[i];
      if ((l!=null) && (l instanceof Serializable)) {
        s.writeObject(l);
      }
    }
 
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  private void readObject(ObjectInputStream s)
    throws IOException, ClassNotFoundException {
    listenerList = NULL_ARRAY;
    s.defaultReadObject();
    EventListener listenerOrNull;
   
    while (null != (listenerOrNull = (EventListener)s.readObject())) {
      add(listenerOrNull);
    }     
  }
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     *
     * @see #getWindowListeners
     * @since 1.3
     */
    public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
        EventListener l = null;
        if (listenerType == WindowFocusListener.class) {
            l = windowFocusListener;
        } else if (listenerType == WindowStateListener.class) {
            l = windowStateListener;
        } else if (listenerType == WindowListener.class) {
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     *
     * @since 1.3
     */
    @SuppressWarnings("unchecked")
    public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
        EventListener l = null;
        if  (listenerType == ComponentListener.class) {
            l = componentListener;
        } else if (listenerType == FocusListener.class) {
            l = focusListener;
        } else if (listenerType == HierarchyListener.class) {
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     *
     * @see #getActionListeners
     * @since 1.3
     */
    public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
        EventListener l = null;
        if  (listenerType == ActionListener.class) {
            l = actionListener;
        } else {
            return super.getListeners(listenerType);
        }
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     * @see #getContainerListeners
     *
     * @since 1.3
     */
    public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
        EventListener l = null;
        if  (listenerType == ContainerListener.class) {
            l = containerListener;
        } else {
            return super.getListeners(listenerType);
        }
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     * @see #getPropertyChangeListeners
     *
     * @since 1.3
     */
    public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
        EventListener l = null;
        if  (listenerType == ComponentListener.class) {
            l = componentListener;
        } else if (listenerType == FocusListener.class) {
            l = focusListener;
        } else if (listenerType == HierarchyListener.class) {
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     *
     * @see #getActionListeners
     * @since 1.3
     */
    public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
  EventListener l = null;
  if  (listenerType == ActionListener.class) {
      l = actionListener;
  }
  return AWTEventMulticaster.getListeners(l, listenerType);
    }
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Related Classes of java.util.EventListener

  • ae.java.awt.AWTEventMulticaster
  • ae.java.awt.Button
  • ae.java.awt.Checkbox
  • ae.java.awt.CheckboxMenuItem
  • ae.java.awt.Component
  • ae.java.awt.Container
  • ae.java.awt.dnd.DnDEventMulticaster
  • ae.java.awt.dnd.DragSource
  • ae.java.awt.List
  • ae.java.awt.MenuItem
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