/*
 * Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 *
 */
package java.awt;

import java.awt.peer.MenuItemPeer;
import java.awt.event.*;
import java.util.EventListener;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.IOException;
import javax.accessibility.*;
import sun.awt.AWTAccessor;

/**
 * All items in a menu must belong to the class
 * <code>MenuItem</code>, or one of its subclasses.
 * <p>
 * The default <code>MenuItem</code> object embodies
 * a simple labeled menu item.
 * <p>
 * This picture of a menu bar shows five menu items:
 * <IMG SRC="doc-files/MenuBar-1.gif" alt="The following text describes this graphic."
 * style="float:center; margin: 7px 10px;">
 * <br style="clear:left;">
 * The first two items are simple menu items, labeled
 * <code>"Basic"</code> and <code>"Simple"</code>.
 * Following these two items is a separator, which is itself
 * a menu item, created with the label <code>"-"</code>.
 * Next is an instance of <code>CheckboxMenuItem</code>
 * labeled <code>"Check"</code>. The final menu item is a
 * submenu labeled <code>"More&nbsp;Examples"</code>,
 * and this submenu is an instance of <code>Menu</code>.
 * <p>
 * When a menu item is selected, AWT sends an action event to
 * the menu item. Since the event is an
 * instance of <code>ActionEvent</code>, the <code>processEvent</code>
 * method examines the event and passes it along to
 * <code>processActionEvent</code>. The latter method redirects the
 * event to any <code>ActionListener</code> objects that have
 * registered an interest in action events generated by this
 * menu item.
 * <P>
 * Note that the subclass <code>Menu</code> overrides this behavior and
 * does not send any event to the frame until one of its subitems is
 * selected.
 *
 * @author Sami Shaio
 */
public class MenuItem extends MenuComponent implements Accessible {

 static {
 /* ensure that the necessary native libraries are loaded */
 Toolkit.loadLibraries();
 if (!GraphicsEnvironment.isHeadless()) {
 initIDs();
 }

 AWTAccessor.setMenuItemAccessor(
 new AWTAccessor.MenuItemAccessor() {
 public boolean isEnabled(MenuItem item) {
 return item.enabled;
 }

 public String getLabel(MenuItem item) {
 return item.label;
 }

 public MenuShortcut getShortcut(MenuItem item) {
 return item.shortcut;
 }

 public String getActionCommandImpl(MenuItem item) {
 return item.getActionCommandImpl();
 }

 public boolean isItemEnabled(MenuItem item) {
 return item.isItemEnabled();
 }
 });
 }

 /**
 * A value to indicate whether a menu item is enabled
 * or not. If it is enabled, <code>enabled</code> will
 * be set to true. Else <code>enabled</code> will
 * be set to false.
 *
 * @serial
 * @see #isEnabled()
 * @see #setEnabled(boolean)
 */
 boolean enabled = true;

 /**
 * <code>label</code> is the label of a menu item.
 * It can be any string.
 *
 * @serial
 * @see #getLabel()
 * @see #setLabel(String)
 */
 String label;

 /**
 * This field indicates the command tha has been issued
 * by a particular menu item.
 * By default the <code>actionCommand</code>
 * is the label of the menu item, unless it has been
 * set using setActionCommand.
 *
 * @serial
 * @see #setActionCommand(String)
 * @see #getActionCommand()
 */
 String actionCommand;

 /**
 * The eventMask is ONLY set by subclasses via enableEvents.
 * The mask should NOT be set when listeners are registered
 * so that we can distinguish the difference between when
 * listeners request events and subclasses request them.
 *
 * @serial
 */
 long eventMask;

 transient ActionListener actionListener;

 /**
 * A sequence of key stokes that ia associated with
 * a menu item.
 * Note :in 1.1.2 you must use setActionCommand()
 * on a menu item in order for its shortcut to
 * work.
 *
 * @serial
 * @see #getShortcut()
 * @see #setShortcut(MenuShortcut)
 * @see #deleteShortcut()
 */
 private MenuShortcut shortcut = null;

 private static final String base = "menuitem";
 private static int nameCounter = 0;

 /*
 * JDK 1.1 serialVersionUID
 */
 private static final long serialVersionUID = -21757335363267194L;

 /**
 * Constructs a new MenuItem with an empty label and no keyboard
 * shortcut.
 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 * returns true.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @since JDK1.1
 */
 public MenuItem() throws HeadlessException {
 this("", null);
 }

 /**
 * Constructs a new MenuItem with the specified label
 * and no keyboard shortcut. Note that use of "-" in
 * a label is reserved to indicate a separator between
 * menu items. By default, all menu items except for
 * separators are enabled.
 * @param label the label for this menu item.
 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 * returns true.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @since JDK1.0
 */
 public MenuItem(String label) throws HeadlessException {
 this(label, null);
 }

 /**
 * Create a menu item with an associated keyboard shortcut.
 * Note that use of "-" in a label is reserved to indicate
 * a separator between menu items. By default, all menu
 * items except for separators are enabled.
 * @param label the label for this menu item.
 * @param s the instance of <code>MenuShortcut</code>
 * associated with this menu item.
 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 * returns true.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @since JDK1.1
 */
 public MenuItem(String label, MenuShortcut s) throws HeadlessException {
 this.label = label;
 this.shortcut = s;
 }

 /**
 * Construct a name for this MenuComponent. Called by getName() when
 * the name is null.
 */
 String constructComponentName() {
 synchronized (MenuItem.class) {
 return base + nameCounter++;
 }
 }

 /**
 * Creates the menu item's peer. The peer allows us to modify the
 * appearance of the menu item without changing its functionality.
 */
 public void addNotify() {
 synchronized (getTreeLock()) {
 if (peer == null)
 peer = Toolkit.getDefaultToolkit().createMenuItem(this);
 }
 }

 /**
 * Gets the label for this menu item.
 * @return the label of this menu item, or <code>null</code>
 if this menu item has no label.
 * @see java.awt.MenuItem#setLabel
 * @since JDK1.0
 */
 public String getLabel() {
 return label;
 }

 /**
 * Sets the label for this menu item to the specified label.
 * @param label the new label, or <code>null</code> for no label.
 * @see java.awt.MenuItem#getLabel
 * @since JDK1.0
 */
 public synchronized void setLabel(String label) {
 this.label = label;
 MenuItemPeer peer = (MenuItemPeer)this.peer;
 if (peer != null) {
 peer.setLabel(label);
 }
 }

 /**
 * Checks whether this menu item is enabled.
 * @see java.awt.MenuItem#setEnabled
 * @since JDK1.0
 */
 public boolean isEnabled() {
 return enabled;
 }

 /**
 * Sets whether or not this menu item can be chosen.
 * @param b if <code>true</code>, enables this menu item;
 * if <code>false</code>, disables it.
 * @see java.awt.MenuItem#isEnabled
 * @since JDK1.1
 */
 public synchronized void setEnabled(boolean b) {
 enable(b);
 }

 /**
 * @deprecated As of JDK version 1.1,
 * replaced by <code>setEnabled(boolean)</code>.
 */
 @Deprecated
 public synchronized void enable() {
 enabled = true;
 MenuItemPeer peer = (MenuItemPeer)this.peer;
 if (peer != null) {
 peer.setEnabled(true);
 }
 }

 /**
 * @deprecated As of JDK version 1.1,
 * replaced by <code>setEnabled(boolean)</code>.
 */
 @Deprecated
 public void enable(boolean b) {
 if (b) {
 enable();
 } else {
 disable();
 }
 }

 /**
 * @deprecated As of JDK version 1.1,
 * replaced by <code>setEnabled(boolean)</code>.
 */
 @Deprecated
 public synchronized void disable() {
 enabled = false;
 MenuItemPeer peer = (MenuItemPeer)this.peer;
 if (peer != null) {
 peer.setEnabled(false);
 }
 }

 /**
 * Get the <code>MenuShortcut</code> object associated with this
 * menu item,
 * @return the menu shortcut associated with this menu item,
 * or <code>null</code> if none has been specified.
 * @see java.awt.MenuItem#setShortcut
 * @since JDK1.1
 */
 public MenuShortcut getShortcut() {
 return shortcut;
 }

 /**
 * Set the <code>MenuShortcut</code> object associated with this
 * menu item. If a menu shortcut is already associated with
 * this menu item, it is replaced.
 * @param s the menu shortcut to associate
 * with this menu item.
 * @see java.awt.MenuItem#getShortcut
 * @since JDK1.1
 */
 public void setShortcut(MenuShortcut s) {
 shortcut = s;
 MenuItemPeer peer = (MenuItemPeer)this.peer;
 if (peer != null) {
 peer.setLabel(label);
 }
 }

 /**
 * Delete any <code>MenuShortcut</code> object associated
 * with this menu item.
 * @since JDK1.1
 */
 public void deleteShortcut() {
 shortcut = null;
 MenuItemPeer peer = (MenuItemPeer)this.peer;
 if (peer != null) {
 peer.setLabel(label);
 }
 }

 /*
 * Delete a matching MenuShortcut associated with this MenuItem.
 * Used when iterating Menus.
 */
 void deleteShortcut(MenuShortcut s) {
 if (s.equals(shortcut)) {
 shortcut = null;
 MenuItemPeer peer = (MenuItemPeer)this.peer;
 if (peer != null) {
 peer.setLabel(label);
 }
 }
 }

 /*
 * The main goal of this method is to post an appropriate event
 * to the event queue when menu shortcut is pressed. However,
 * in subclasses this method may do more than just posting
 * an event.
 */
 void doMenuEvent(long when, int modifiers) {
 Toolkit.getEventQueue().postEvent(
 new ActionEvent(this, ActionEvent.ACTION_PERFORMED,
 getActionCommand(), when, modifiers));
 }

 /*
 * Returns true if the item and all its ancestors are
 * enabled, false otherwise
 */
 private final boolean isItemEnabled() {
 // Fix For 6185151: Menu shortcuts of all menuitems within a menu
 // should be disabled when the menu itself is disabled
 if (!isEnabled()) {
 return false;
 }
 MenuContainer container = getParent_NoClientCode();
 do {
 if (!(container instanceof Menu)) {
 return true;
 }
 Menu menu = (Menu)container;
 if (!menu.isEnabled()) {
 return false;
 }
 container = menu.getParent_NoClientCode();
 } while (container != null);
 return true;
 }

 /*
 * Post an ActionEvent to the target (on
 * keydown) and the item is enabled.
 * Returns true if there is an associated shortcut.
 */
 boolean handleShortcut(KeyEvent e) {
 MenuShortcut s = new MenuShortcut(e.getKeyCode(),
 (e.getModifiers() & InputEvent.SHIFT_MASK) > 0);
 MenuShortcut sE = new MenuShortcut(e.getExtendedKeyCode(),
 (e.getModifiers() & InputEvent.SHIFT_MASK) > 0);
 // Fix For 6185151: Menu shortcuts of all menuitems within a menu
 // should be disabled when the menu itself is disabled
 if ((s.equals(shortcut) || sE.equals(shortcut)) && isItemEnabled()) {
 // MenuShortcut match -- issue an event on keydown.
 if (e.getID() == KeyEvent.KEY_PRESSED) {
 doMenuEvent(e.getWhen(), e.getModifiers());
 } else {
 // silently eat key release.
 }
 return true;
 }
 return false;
 }

 MenuItem getShortcutMenuItem(MenuShortcut s) {
 return (s.equals(shortcut)) ? this : null;
 }

 /**
 * Enables event delivery to this menu item for events
 * to be defined by the specified event mask parameter
 * <p>
 * Since event types are automatically enabled when a listener for
 * that type is added to the menu item, this method only needs
 * to be invoked by subclasses of <code>MenuItem</code> which desire to
 * have the specified event types delivered to <code>processEvent</code>
 * regardless of whether a listener is registered.
 *
 * @param eventsToEnable the event mask defining the event types
 * @see java.awt.MenuItem#processEvent
 * @see java.awt.MenuItem#disableEvents
 * @see java.awt.Component#enableEvents
 * @since JDK1.1
 */
 protected final void enableEvents(long eventsToEnable) {
 eventMask |= eventsToEnable;
 newEventsOnly = true;
 }

 /**
 * Disables event delivery to this menu item for events
 * defined by the specified event mask parameter.
 *
 * @param eventsToDisable the event mask defining the event types
 * @see java.awt.MenuItem#processEvent
 * @see java.awt.MenuItem#enableEvents
 * @see java.awt.Component#disableEvents
 * @since JDK1.1
 */
 protected final void disableEvents(long eventsToDisable) {
 eventMask &= ~eventsToDisable;
 }

 /**
 * Sets the command name of the action event that is fired
 * by this menu item.
 * <p>
 * By default, the action command is set to the label of
 * the menu item.
 * @param command the action command to be set
 * for this menu item.
 * @see java.awt.MenuItem#getActionCommand
 * @since JDK1.1
 */
 public void setActionCommand(String command) {
 actionCommand = command;
 }

 /**
 * Gets the command name of the action event that is fired
 * by this menu item.
 * @see java.awt.MenuItem#setActionCommand
 * @since JDK1.1
 */
 public String getActionCommand() {
 return getActionCommandImpl();
 }

 // This is final so it can be called on the Toolkit thread.
 final String getActionCommandImpl() {
 return (actionCommand == null? label : actionCommand);
 }

 /**
 * Adds the specified action listener to receive action events
 * from this menu item.
 * If l is null, no exception is thrown and no action is performed.
 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
 * >AWT Threading Issues</a> for details on AWT's threading model.
 *
 * @param l the action listener.
 * @see #removeActionListener
 * @see #getActionListeners
 * @see java.awt.event.ActionEvent
 * @see java.awt.event.ActionListener
 * @since JDK1.1
 */
 public synchronized void addActionListener(ActionListener l) {
 if (l == null) {
 return;
 }
 actionListener = AWTEventMulticaster.add(actionListener, l);
 newEventsOnly = true;
 }

 /**
 * Removes the specified action listener so it no longer receives
 * action events from this menu item.
 * If l is null, no exception is thrown and no action is performed.
 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
 * >AWT Threading Issues</a> for details on AWT's threading model.
 *
 * @param l the action listener.
 * @see #addActionListener
 * @see #getActionListeners
 * @see java.awt.event.ActionEvent
 * @see java.awt.event.ActionListener
 * @since JDK1.1
 */
 public synchronized void removeActionListener(ActionListener l) {
 if (l == null) {
 return;
 }
 actionListener = AWTEventMulticaster.remove(actionListener, l);
 }

 /**
 * Returns an array of all the action listeners
 * registered on this menu item.
 *
 * @return all of this menu item's <code>ActionListener</code>s
 * or an empty array if no action
 * listeners are currently registered
 *
 * @see #addActionListener
 * @see #removeActionListener
 * @see java.awt.event.ActionEvent
 * @see java.awt.event.ActionListener
 * @since 1.4
 */
 public synchronized ActionListener[] getActionListeners() {
 return getListeners(ActionListener.class);
 }

 /**
 * Returns an array of all the objects currently registered
 * as <code><em>Foo</em>Listener</code>s
 * upon this <code>MenuItem</code>.
 * <code><em>Foo</em>Listener</code>s are registered using the
 * <code>add<em>Foo</em>Listener</code> method.
 *
 * <p>
 * You can specify the <code>listenerType</code> argument
 * with a class literal, such as
 * <code><em>Foo</em>Listener.class</code>.
 * For example, you can query a
 * <code>MenuItem</code> <code>m</code>
 * for its action listeners with the following code:
 *
 * <pre>ActionListener[] als = (ActionListener[])(m.getListeners(ActionListener.class));</pre>
 *
 * If no such listeners exist, this method returns an empty array.
 *
 * @param listenerType the type of listeners requested; this parameter
 * should specify an interface that descends from
 * <code>java.util.EventListener</code>
 * @return an array of all objects registered as
 * <code><em>Foo</em>Listener</code>s on this menu item,
 * or an empty array if no such
 * listeners have been added
 * @exception ClassCastException if <code>listenerType</code>
 * doesn't specify a class or interface that implements
 * <code>java.util.EventListener</code>
 *
 * @see #getActionListeners
 * @since 1.3
 */
 public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
 EventListener l = null;
 if (listenerType == ActionListener.class) {
 l = actionListener;
 }
 return AWTEventMulticaster.getListeners(l, listenerType);
 }

 /**
 * Processes events on this menu item. If the event is an
 * instance of <code>ActionEvent</code>, it invokes
 * <code>processActionEvent</code>, another method
 * defined by <code>MenuItem</code>.
 * <p>
 * Currently, menu items only support action events.
 * <p>Note that if the event parameter is <code>null</code>
 * the behavior is unspecified and may result in an
 * exception.
 *
 * @param e the event
 * @see java.awt.MenuItem#processActionEvent
 * @since JDK1.1
 */
 protected void processEvent(AWTEvent e) {
 if (e instanceof ActionEvent) {
 processActionEvent((ActionEvent)e);
 }
 }

 // REMIND: remove when filtering is done at lower level
 boolean eventEnabled(AWTEvent e) {
 if (e.id == ActionEvent.ACTION_PERFORMED) {
 if ((eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 ||
 actionListener != null) {
 return true;
 }
 return false;
 }
 return super.eventEnabled(e);
 }

 /**
 * Processes action events occurring on this menu item,
 * by dispatching them to any registered
 * <code>ActionListener</code> objects.
 * This method is not called unless action events are
 * enabled for this component. Action events are enabled
 * when one of the following occurs:
 * <ul>
 * <li>An <code>ActionListener</code> object is registered
 * via <code>addActionListener</code>.
 * <li>Action events are enabled via <code>enableEvents</code>.
 * </ul>
 * <p>Note that if the event parameter is <code>null</code>
 * the behavior is unspecified and may result in an
 * exception.
 *
 * @param e the action event
 * @see java.awt.event.ActionEvent
 * @see java.awt.event.ActionListener
 * @see java.awt.MenuItem#enableEvents
 * @since JDK1.1
 */
 protected void processActionEvent(ActionEvent e) {
 ActionListener listener = actionListener;
 if (listener != null) {
 listener.actionPerformed(e);
 }
 }

 /**
 * Returns a string representing the state of this <code>MenuItem</code>.
 * This method is intended to be used only for debugging purposes, and the
 * content and format of the returned string may vary between
 * implementations. The returned string may be empty but may not be
 * <code>null</code>.
 *
 * @return the parameter string of this menu item
 */
 public String paramString() {
 String str = ",label=" + label;
 if (shortcut != null) {
 str += ",shortcut=" + shortcut;
 }
 return super.paramString() + str;
 }


 /* Serialization support.
 */

 /**
 * Menu item serialized data version.
 *
 * @serial
 */
 private int menuItemSerializedDataVersion = 1;

 /**
 * Writes default serializable fields to stream. Writes
 * a list of serializable <code>ActionListeners</code>
 * as optional data. The non-serializable listeners are
 * detected and no attempt is made to serialize them.
 *
 * @param s the <code>ObjectOutputStream</code> to write
 * @serialData <code>null</code> terminated sequence of 0
 * or more pairs; the pair consists of a <code>String</code>
 * and an <code>Object</code>; the <code>String</code>
 * indicates the type of object and is one of the following:
 * <code>actionListenerK</code> indicating an
 * <code>ActionListener</code> object
 *
 * @see AWTEventMulticaster#save(ObjectOutputStream, String, EventListener)
 * @see #readObject(ObjectInputStream)
 */
 private void writeObject(ObjectOutputStream s)
 throws IOException
 {
 s.defaultWriteObject();

 AWTEventMulticaster.save(s, actionListenerK, actionListener);
 s.writeObject(null);
 }

 /**
 * Reads the <code>ObjectInputStream</code> and if it
 * isn't <code>null</code> adds a listener to receive
 * action events fired by the <code>Menu</code> Item.
 * Unrecognized keys or values will be ignored.
 *
 * @param s the <code>ObjectInputStream</code> to read
 * @exception HeadlessException if
 * <code>GraphicsEnvironment.isHeadless</code> returns
 * <code>true</code>
 * @see #removeActionListener(ActionListener)
 * @see #addActionListener(ActionListener)
 * @see #writeObject(ObjectOutputStream)
 */
 private void readObject(ObjectInputStream s)
 throws ClassNotFoundException, IOException, HeadlessException
 {
 // HeadlessException will be thrown from MenuComponent's readObject
 s.defaultReadObject();

 Object keyOrNull;
 while(null != (keyOrNull = s.readObject())) {
 String key = ((String)keyOrNull).intern();

 if (actionListenerK == key)
 addActionListener((ActionListener)(s.readObject()));

 else // skip value for unrecognized key
 s.readObject();
 }
 }

 /**
 * Initialize JNI field and method IDs
 */
 private static native void initIDs();


/////////////////
// Accessibility support
////////////////

 /**
 * Gets the AccessibleContext associated with this MenuItem.
 * For menu items, the AccessibleContext takes the form of an
 * AccessibleAWTMenuItem.
 * A new AccessibleAWTMenuItem instance is created if necessary.
 *
 * @return an AccessibleAWTMenuItem that serves as the
 * AccessibleContext of this MenuItem
 * @since 1.3
 */
 public AccessibleContext getAccessibleContext() {
 if (accessibleContext == null) {
 accessibleContext = new AccessibleAWTMenuItem();
 }
 return accessibleContext;
 }

 /**
 * Inner class of MenuItem used to provide default support for
 * accessibility. This class is not meant to be used directly by
 * application developers, but is instead meant only to be
 * subclassed by menu component developers.
 * <p>
 * This class implements accessibility support for the
 * <code>MenuItem</code> class. It provides an implementation of the
 * Java Accessibility API appropriate to menu item user-interface elements.
 * @since 1.3
 */
 protected class AccessibleAWTMenuItem extends AccessibleAWTMenuComponent
 implements AccessibleAction, AccessibleValue
 {
 /*
 * JDK 1.3 serialVersionUID
 */
 private static final long serialVersionUID = -217847831945965825L;

 /**
 * Get the accessible name of this object.
 *
 * @return the localized name of the object -- can be null if this
 * object does not have a name
 */
 public String getAccessibleName() {
 if (accessibleName != null) {
 return accessibleName;
 } else {
 if (getLabel() == null) {
 return super.getAccessibleName();
 } else {
 return getLabel();
 }
 }
 }

 /**
 * Get the role of this object.
 *
 * @return an instance of AccessibleRole describing the role of the
 * object
 */
 public AccessibleRole getAccessibleRole() {
 return AccessibleRole.MENU_ITEM;
 }

 /**
 * Get the AccessibleAction associated with this object. In the
 * implementation of the Java Accessibility API for this class,
 * return this object, which is responsible for implementing the
 * AccessibleAction interface on behalf of itself.
 *
 * @return this object
 */
 public AccessibleAction getAccessibleAction() {
 return this;
 }

 /**
 * Get the AccessibleValue associated with this object. In the
 * implementation of the Java Accessibility API for this class,
 * return this object, which is responsible for implementing the
 * AccessibleValue interface on behalf of itself.
 *
 * @return this object
 */
 public AccessibleValue getAccessibleValue() {
 return this;
 }

 /**
 * Returns the number of Actions available in this object. The
 * default behavior of a menu item is to have one action.
 *
 * @return 1, the number of Actions in this object
 */
 public int getAccessibleActionCount() {
 return 1;
 }

 /**
 * Return a description of the specified action of the object.
 *
 * @param i zero-based index of the actions
 */
 public String getAccessibleActionDescription(int i) {
 if (i == 0) {
 // [[[PENDING: WDW -- need to provide a localized string]]]
 return "click";
 } else {
 return null;
 }
 }

 /**
 * Perform the specified Action on the object
 *
 * @param i zero-based index of actions
 * @return true if the action was performed; otherwise false.
 */
 public boolean doAccessibleAction(int i) {
 if (i == 0) {
 // Simulate a button click
 Toolkit.getEventQueue().postEvent(
 new ActionEvent(MenuItem.this,
 ActionEvent.ACTION_PERFORMED,
 MenuItem.this.getActionCommand(),
 EventQueue.getMostRecentEventTime(),
 0));
 return true;
 } else {
 return false;
 }
 }

 /**
 * Get the value of this object as a Number.
 *
 * @return An Integer of 0 if this isn't selected or an Integer of 1 if
 * this is selected.
 * @see javax.swing.AbstractButton#isSelected()
 */
 public Number getCurrentAccessibleValue() {
 return Integer.valueOf(0);
 }

 /**
 * Set the value of this object as a Number.
 *
 * @return True if the value was set.
 */
 public boolean setCurrentAccessibleValue(Number n) {
 return false;
 }

 /**
 * Get the minimum value of this object as a Number.
 *
 * @return An Integer of 0.
 */
 public Number getMinimumAccessibleValue() {
 return Integer.valueOf(0);
 }

 /**
 * Get the maximum value of this object as a Number.
 *
 * @return An Integer of 0.
 */
 public Number getMaximumAccessibleValue() {
 return Integer.valueOf(0);
 }

 } // class AccessibleAWTMenuItem

}