/*
* Copyright (c) 1995, 2015, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.awt;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.Vector;
import java.util.Enumeration;
import sun.awt.AWTAccessor;
import java.awt.peer.MenuBarPeer;
import java.awt.event.KeyEvent;
import javax.accessibility.*;
/**
* The MenuBar
class encapsulates the platform's
* concept of a menu bar bound to a frame. In order to associate
* the menu bar with a Frame
object, call the
* frame's setMenuBar
method.
*
*
* This is what a menu bar might look like:
*
*
*
* A menu bar handles keyboard shortcuts for menu items, passing them
* along to its child menus.
* (Keyboard shortcuts, which are optional, provide the user with
* an alternative to the mouse for invoking a menu item and the
* action that is associated with it.)
* Each menu item can maintain an instance of MenuShortcut
.
* The MenuBar
class defines several methods,
* {@link MenuBar#shortcuts} and
* {@link MenuBar#getShortcutMenuItem}
* that retrieve information about the shortcuts a given
* menu bar is managing.
*
* @author Sami Shaio
* @see java.awt.Frame
* @see java.awt.Frame#setMenuBar(java.awt.MenuBar)
* @see java.awt.Menu
* @see java.awt.MenuItem
* @see java.awt.MenuShortcut
* @since 1.0
*/
public class MenuBar extends MenuComponent implements MenuContainer, Accessible {
static {
/* ensure that the necessary native libraries are loaded */
Toolkit.loadLibraries();
if (!GraphicsEnvironment.isHeadless()) {
initIDs();
}
AWTAccessor.setMenuBarAccessor(
new AWTAccessor.MenuBarAccessor() {
public Menu getHelpMenu(MenuBar menuBar) {
return menuBar.helpMenu;
}
public Vector