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/**
* Returns an array of all the objects currently registered
* as <code><em>Foo</em>Listener</code>s
* upon this <code>Component</code>.
* <code><em>Foo</em>Listener</code>s are registered using the
* <code>add<em>Foo</em>Listener</code> method.
*
* <p>
* You can specify the <code>listenerType</code> argument
* with a class literal, such as
* <code><em>Foo</em>Listener.class</code>.
* For example, you can query a
* <code>Component</code> <code>c</code>
* for its mouse listeners with the following code:
*
* <pre>MouseListener[] mls = (MouseListener[])(c.getListeners(MouseListener.class));</pre>
*
* If no such listeners exist, this method returns an empty array.
*
* @param listenerType the type of listeners requested; this parameter
* should specify an interface that descends from
* <code>java.util.EventListener</code>
* @return an array of all objects registered as
* <code><em>Foo</em>Listener</code>s on this component,
* or an empty array if no such listeners have been added
* @exception ClassCastException if <code>listenerType</code>
* doesn't specify a class or interface that implements
* <code>java.util.EventListener</code>
*
* @see #getComponentListeners
* @see #getFocusListeners
* @see #getHierarchyListeners
* @see #getHierarchyBoundsListeners
* @see #getKeyListeners
* @see #getMouseListeners
* @see #getMouseMotionListeners
* @see #getMouseWheelListeners
* @see #getInputMethodListeners
* @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) {
l = hierarchyListener;
} else if (listenerType == HierarchyBoundsListener.class) {
l = hierarchyBoundsListener;
} else if (listenerType == KeyListener.class) {
l = keyListener;
} else if (listenerType == MouseListener.class) {
l = mouseListener;
} else if (listenerType == MouseMotionListener.class) {
l = mouseMotionListener;
} else if (listenerType == MouseWheelListener.class) {
l = mouseWheelListener;
} else if (listenerType == InputMethodListener.class) {
l = inputMethodListener;
} else if (listenerType == PropertyChangeListener.class) {
return (T[])getPropertyChangeListeners();
}
return AWTEventMulticaster.getListeners(l, listenerType);
}
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