Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * $Id: SwingXUtilities.java,v 1.11 2009/04/02 20:35:54 kschaefe Exp $
 *
 * Copyright 2008 Sun Microsystems, Inc., 4150 Network Circle,
 * Santa Clara, California 95054, U.S.A. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

import java.awt.Component;

import javax.swing.JPopupMenu;

public class Main {
    /**
     * Returns whether the component is part of the parent's
     * container hierarchy. If a parent in the chain is of type 
     * JPopupMenu, the parent chain of its invoker is walked.
     * 
     * @param focusOwner
     * @param parent
     * @return true if the component is contained under the parent's 
     *    hierarchy, coping with JPopupMenus.
     */
    public static boolean isDescendingFrom(Component focusOwner, Component parent) {
        while (focusOwner != null) {
            if (focusOwner instanceof JPopupMenu) {
                focusOwner = ((JPopupMenu) focusOwner).getInvoker();
                if (focusOwner == null) {
                    return false;
                }
            }
            if (focusOwner == parent) {
                return true;
            }
            focusOwner = focusOwner.getParent();
        }
        return false;
    }
}