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.ui;
017    
018    /**
019     * An adapter to simplify focus event listeners that do not need all events
020     * defined on the FocusListener interface.
021     */
022    public abstract class FocusListenerAdapter implements FocusListener {
023    
024      public void onFocus(Widget sender) {
025      }
026    
027      public void onLostFocus(Widget sender) {
028      }
029    }