Panel.java 文件源码

/**
 * Removes an event listener from the Panel.
 *
 * @param eventListener
 *        The event listener.
 *
 * @throws IllegalArgumentException
 *        If the event listener isn't supported by this function.
 */
public void removeListener(final EventListener eventListener) {
    if (eventListener instanceof KeyListener) {
        this.removeKeyListener((KeyListener) eventListener);
        return;
    }

    if (eventListener instanceof MouseListener) {
        this.removeMouseListener((MouseListener) eventListener);
        return;
    }

    if (eventListener instanceof MouseMotionListener) {
        this.removeMouseMotionListener((MouseMotionListener) eventListener);
        return;
    }

    throw new IllegalArgumentException("The " + eventListener.getClass().getSimpleName() + " is not supported.");
}