focuslistener.java.svn-base

来自「j2me设计的界面包」· SVN-BASE 代码 · 共 49 行

/*
 * Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
package com.sun.lwuit.events;

import com.sun.lwuit.Component;

/**
 * Observes focus change events for a given form and invokes the callbacks to 
 * enable us to assign functionality based on current focused component.
 *
 * @author Chen Fishbein
 */
public interface FocusListener {
    
    /**
     * Invoked when component gains focus
     * @param cmp the component that gains focus
     */
    public void focusGained(Component cmp);
    
    /**
     * Invoked when component loses focus
     * @param cmp the component that lost focus
     */
    public void focusLost(Component cmp);
}