1 /*
2 * Copyright (c) 1995, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package java.awt;
26
27 import java.io.IOException;
28 import java.io.ObjectInputStream;
29 import java.util.Vector;
30 import java.util.Enumeration;
31 import sun.awt.AWTAccessor;
32 import java.awt.peer.MenuBarPeer;
33 import java.awt.event.KeyEvent;
34 import javax.accessibility.*;
35
36 /**
37 * The {@code MenuBar} class encapsulates the platform's
38 * concept of a menu bar bound to a frame. In order to associate
39 * the menu bar with a {@code Frame} object, call the
40 * frame's {@code setMenuBar} method.
41 * <p>
42 * <A NAME="mbexample"></A><!-- target for cross references -->
43 * This is what a menu bar might look like:
44 * <p>
45 * <img src="doc-files/MenuBar-1.gif"
46 * alt="Diagram of MenuBar containing 2 menus: Examples and Options.
47 * Examples menu is expanded showing items: Basic, Simple, Check, and More Examples."
48 * style="float:center; margin: 7px 10px;">
49 * <p>
50 * A menu bar handles keyboard shortcuts for menu items, passing them
51 * along to its child menus.
52 * (Keyboard shortcuts, which are optional, provide the user with
53 * an alternative to the mouse for invoking a menu item and the
54 * action that is associated with it.)
77 }
78 AWTAccessor.setMenuBarAccessor(
79 new AWTAccessor.MenuBarAccessor() {
80 public Menu getHelpMenu(MenuBar menuBar) {
81 return menuBar.helpMenu;
82 }
83
84 public Vector<Menu> getMenus(MenuBar menuBar) {
85 return menuBar.menus;
86 }
87 });
88 }
89
90 /**
91 * This field represents a vector of the
92 * actual menus that will be part of the MenuBar.
93 *
94 * @serial
95 * @see #countMenus()
96 */
97 Vector<Menu> menus = new Vector<>();
98
99 /**
100 * This menu is a special menu dedicated to
101 * help. The one thing to note about this menu
102 * is that on some platforms it appears at the
103 * right edge of the menubar.
104 *
105 * @serial
106 * @see #getHelpMenu()
107 * @see #setHelpMenu(Menu)
108 */
109 Menu helpMenu;
110
111 private static final String base = "menubar";
112 private static int nameCounter = 0;
113
114 /*
115 * JDK 1.1 serialVersionUID
116 */
117 private static final long serialVersionUID = -4930327919388951260L;
118
119 /**
120 * Creates a new menu bar.
121 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
122 * returns true.
123 * @see java.awt.GraphicsEnvironment#isHeadless
124 */
125 public MenuBar() throws HeadlessException {
126 }
127
128 /**
129 * Construct a name for this MenuComponent. Called by getName() when
235 menus.addElement(m);
236 }
237 return m;
238 }
239 }
240
241 /**
242 * Removes the menu located at the specified
243 * index from this menu bar.
244 * @param index the position of the menu to be removed.
245 * @see java.awt.MenuBar#add(java.awt.Menu)
246 */
247 public void remove(final int index) {
248 synchronized (getTreeLock()) {
249 Menu m = getMenu(index);
250 menus.removeElementAt(index);
251 MenuBarPeer peer = (MenuBarPeer)this.peer;
252 if (peer != null) {
253 peer.delMenu(index);
254 m.removeNotify();
255 m.parent = null;
256 }
257 if (helpMenu == m) {
258 helpMenu = null;
259 m.isHelpMenu = false;
260 }
261 }
262 }
263
264 /**
265 * Removes the specified menu component from this menu bar.
266 * @param m the menu component to be removed.
267 * @see java.awt.MenuBar#add(java.awt.Menu)
268 */
269 public void remove(MenuComponent m) {
270 synchronized (getTreeLock()) {
271 int index = menus.indexOf(m);
272 if (index >= 0) {
273 remove(index);
274 }
275 }
276 }
|
1 /*
2 * Copyright (c) 1995, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.awt;
27
28 import java.awt.event.KeyEvent;
29 import java.awt.peer.MenuBarPeer;
30 import java.io.IOException;
31 import java.io.ObjectInputStream;
32 import java.util.Enumeration;
33 import java.util.Vector;
34
35 import javax.accessibility.Accessible;
36 import javax.accessibility.AccessibleContext;
37 import javax.accessibility.AccessibleRole;
38
39 import sun.awt.AWTAccessor;
40
41 /**
42 * The {@code MenuBar} class encapsulates the platform's
43 * concept of a menu bar bound to a frame. In order to associate
44 * the menu bar with a {@code Frame} object, call the
45 * frame's {@code setMenuBar} method.
46 * <p>
47 * <A NAME="mbexample"></A><!-- target for cross references -->
48 * This is what a menu bar might look like:
49 * <p>
50 * <img src="doc-files/MenuBar-1.gif"
51 * alt="Diagram of MenuBar containing 2 menus: Examples and Options.
52 * Examples menu is expanded showing items: Basic, Simple, Check, and More Examples."
53 * style="float:center; margin: 7px 10px;">
54 * <p>
55 * A menu bar handles keyboard shortcuts for menu items, passing them
56 * along to its child menus.
57 * (Keyboard shortcuts, which are optional, provide the user with
58 * an alternative to the mouse for invoking a menu item and the
59 * action that is associated with it.)
82 }
83 AWTAccessor.setMenuBarAccessor(
84 new AWTAccessor.MenuBarAccessor() {
85 public Menu getHelpMenu(MenuBar menuBar) {
86 return menuBar.helpMenu;
87 }
88
89 public Vector<Menu> getMenus(MenuBar menuBar) {
90 return menuBar.menus;
91 }
92 });
93 }
94
95 /**
96 * This field represents a vector of the
97 * actual menus that will be part of the MenuBar.
98 *
99 * @serial
100 * @see #countMenus()
101 */
102 private final Vector<Menu> menus = new Vector<>();
103
104 /**
105 * This menu is a special menu dedicated to
106 * help. The one thing to note about this menu
107 * is that on some platforms it appears at the
108 * right edge of the menubar.
109 *
110 * @serial
111 * @see #getHelpMenu()
112 * @see #setHelpMenu(Menu)
113 */
114 private volatile Menu helpMenu;
115
116 private static final String base = "menubar";
117 private static int nameCounter = 0;
118
119 /*
120 * JDK 1.1 serialVersionUID
121 */
122 private static final long serialVersionUID = -4930327919388951260L;
123
124 /**
125 * Creates a new menu bar.
126 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
127 * returns true.
128 * @see java.awt.GraphicsEnvironment#isHeadless
129 */
130 public MenuBar() throws HeadlessException {
131 }
132
133 /**
134 * Construct a name for this MenuComponent. Called by getName() when
240 menus.addElement(m);
241 }
242 return m;
243 }
244 }
245
246 /**
247 * Removes the menu located at the specified
248 * index from this menu bar.
249 * @param index the position of the menu to be removed.
250 * @see java.awt.MenuBar#add(java.awt.Menu)
251 */
252 public void remove(final int index) {
253 synchronized (getTreeLock()) {
254 Menu m = getMenu(index);
255 menus.removeElementAt(index);
256 MenuBarPeer peer = (MenuBarPeer)this.peer;
257 if (peer != null) {
258 peer.delMenu(index);
259 m.removeNotify();
260 }
261 m.parent = null;
262 if (helpMenu == m) {
263 helpMenu = null;
264 m.isHelpMenu = false;
265 }
266 }
267 }
268
269 /**
270 * Removes the specified menu component from this menu bar.
271 * @param m the menu component to be removed.
272 * @see java.awt.MenuBar#add(java.awt.Menu)
273 */
274 public void remove(MenuComponent m) {
275 synchronized (getTreeLock()) {
276 int index = menus.indexOf(m);
277 if (index >= 0) {
278 remove(index);
279 }
280 }
281 }
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