001    /*
002     * Copyright 2006 Google Inc.
003     * 
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not
005     * use this file except in compliance with the License. You may obtain a copy of
006     * the License at
007     * 
008     * http://www.apache.org/licenses/LICENSE-2.0
009     * 
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
012     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
013     * License for the specific language governing permissions and limitations under
014     * the License.
015     */
016    package com.google.gwt.user.client;
017    
018    /**
019     * Receives low-level browser events. The implementer registers for DOM events
020     * using
021     * {@link com.google.gwt.user.client.DOM#setEventListener(Element, EventListener)}.
022     * 
023     * <p>
024     * Only subclasses of {@link com.google.gwt.user.client.ui.Widget} should
025     * attempt to listen to browser events.
026     * </p>
027     */
028    public interface EventListener {
029    
030      /**
031       * Fired whenever a browser event is received.
032       * 
033       * @param event the event received
034       */
035      void onBrowserEvent(Event event);
036    }