/**  Copyright (c) 2001 Sun Microsystems, Inc.  All rights*  reserved.**  Redistribution and use in source and binary forms, with or without*  modification, are permitted provided that the following conditions*  are met:**  1. Redistributions of source code must retain the above copyright*  notice, this list of conditions and the following disclaimer.**  2. Redistributions in binary form must reproduce the above copyright*  notice, this list of conditions and the following disclaimer in*  the documentation and/or other materials provided with the*  distribution.**  3. The end-user documentation included with the redistribution,*  if any, must include the following acknowledgment:*  "This product includes software developed by the*  Sun Microsystems, Inc. for Project JXTA."*  Alternately, this acknowledgment may appear in the software itself,*  if and wherever such third-party acknowledgments normally appear.**  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"*  must not be used to endorse or promote products derived from this*  software without prior written permission. For written*  permission, please contact Project JXTA at http://www.jxta.org.**  5. Products derived from this software may not be called "JXTA",*  nor may "JXTA" appear in their name, without prior written*  permission of Sun.**  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE*  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR*  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF*  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT*  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF*  SUCH DAMAGE.*  ====================================================================**  This software consists of voluntary contributions made by many*  individuals on behalf of Project JXTA.  For more*  information on Project JXTA, please see*  <http://www.jxta.org/>.**  This license is based on the BSD license adopted by the Apache Foundation.**  $Id: GroupResignAction.java,v 1.8 2006/05/17 21:23:59 nano Exp $*/package net.jxta.myjxta.ui.action;import net.jxta.myjxta.View;import net.jxta.myjxta.util.Group;import net.jxta.myjxta.util.objectmodel.GroupNode;import javax.swing.*;import java.awt.event.ActionEvent;/** * * @version $Id: GroupResignAction.java,v 1.8 2006/05/17 21:23:59 nano Exp $ * * @author james todd [gonzo at jxta dot org] */public class GroupResignAction    extends AbstractAction {        private View view = null;    public GroupResignAction(String name, View view) {        super(name);        this.view = view;    }    public boolean isEnabled() {        if (this.view!=null && this.view.getJxtaNode(GroupNode.class)!=null){            GroupNode gn = (GroupNode)this.view.getJxtaNode(GroupNode.class);            Group g = gn != null ? gn.getGroup() : null;            Group parentGroup = g.getParentGroup();            return g.isJoined()&& g.isVisible() && (parentGroup!=null&&parentGroup.isVisible());        } else {            return false;        }    }    public void actionPerformed(ActionEvent ae) {        GroupNode gn = (GroupNode)this.view.getJxtaNode(GroupNode.class);        Group g = gn != null ? gn.getGroup() : null;        // xxx: get first parent node that is a group.        if (g != null &&            g.isJoined()) {            this.view.getControl().resignGroup(gn);        }    }}