Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 2011 OpenConcerto, by ILM Informatique. All rights reserved.
 * 
 * The contents of this file are subject to the terms of the GNU General Public License Version 3
 * only ("GPL"). You may not use this file except in compliance with the License. You can obtain a
 * copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each file.
 */

import java.awt.Component;

import javax.swing.JPopupMenu;

public class Main {
    /**
     * Return the first ancestor of <code>component</code> (beginning with itself) that is an
     * {@link Class#isInstance(Object) instance of} <code>c</code>. If <code>component</code> is in
     * a popup, {@link JPopupMenu#getInvoker()} is used instead of {@link Component#getParent()}.
     * 
     * @param <C> type of class.
     * @param c the searched for class.
     * @param component the component.
     * @return the first ancestor or <code>null</code> if none match.
     */
    public static final <C> C getAncestorOrSelf(final Class<C> c, Component component) {
        while (component != null && !c.isInstance(component)) {
            if (component instanceof JPopupMenu) {
                // popups are in a JLayeredPane in the root pane
                component = ((JPopupMenu) component).getInvoker();
            } else {
                component = component.getParent();
            }
        }
        return c.cast(component);
    }
}