public interface

EventListener

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 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file and, per its terms, should not be removed:
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 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
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package org.w3c.dom.events;

/**
 *  The <code>EventListener</code> interface is the primary method for
 * handling events. Users implement the <code>EventListener</code> interface
 * and register their listener on an <code>EventTarget</code> using the
 * <code>AddEventListener</code> method. The users should also remove their
 * <code>EventListener</code> from its <code>EventTarget</code> after they
 * have completed using the listener.
 * <p> When a <code>Node</code> is copied using the <code>cloneNode</code>
 * method the <code>EventListener</code>s attached to the source
 * <code>Node</code> are not attached to the copied <code>Node</code>. If
 * the user wishes the same <code>EventListener</code>s to be added to the
 * newly created copy the user must add them manually.
 * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113'>Document Object Model (DOM) Level 2 Events Specification</a>.
 * @since DOM Level 2
 */
public interface EventListener {
    /**
     *  This method is called whenever an event occurs of the type for which
     * the <code> EventListener</code> interface was registered.
     * @param evt  The <code>Event</code> contains contextual information
     *   about the event. It also contains the <code>stopPropagation</code>
     *   and <code>preventDefault</code> methods which are used in
     *   determining the event's flow and default action.
     */
    public void handleEvent(Event evt);

}