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/*
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* Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing;
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import java.awt.AWTEvent;
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import java.awt.Component;
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import java.awt.ComponentOrientation;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.GraphicsConfiguration;
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import java.awt.GraphicsDevice;
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import java.awt.GraphicsEnvironment;
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import java.awt.Insets;
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import java.awt.Point;
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import java.awt.Polygon;
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import java.awt.Rectangle;
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import java.awt.Toolkit;
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import java.awt.event.*;
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import java.beans.*;
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import java.util.*;
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import java.io.Serializable;
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import java.io.ObjectOutputStream;
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import java.io.ObjectInputStream;
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import java.io.IOException;
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import javax.swing.event.*;
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import javax.swing.plaf.*;
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import javax.swing.plaf.basic.*;
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import javax.accessibility.*;
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import java.lang.ref.WeakReference;
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/**
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* An implementation of a menu -- a popup window containing
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* <code>JMenuItem</code>s that
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* is displayed when the user selects an item on the <code>JMenuBar</code>.
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* In addition to <code>JMenuItem</code>s, a <code>JMenu</code> can
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* also contain <code>JSeparator</code>s.
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* <p>
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* In essence, a menu is a button with an associated <code>JPopupMenu</code>.
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* When the "button" is pressed, the <code>JPopupMenu</code> appears. If the
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* "button" is on the <code>JMenuBar</code>, the menu is a top-level window.
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* If the "button" is another menu item, then the <code>JPopupMenu</code> is
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* "pull-right" menu.
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* <p>
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* Menus can be configured, and to some degree controlled, by
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* <code><a href="Action.html">Action</a></code>s. Using an
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* <code>Action</code> with a menu has many benefits beyond directly
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* configuring a menu. Refer to <a href="Action.html#buttonActions">
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* Swing Components Supporting <code>Action</code></a> for more
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* details, and you can find more information in <a
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* href="http://java.sun.com/docs/books/tutorial/uiswing/misc/action.html">How
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* to Use Actions</a>, a section in <em>The Java Tutorial</em>.
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* <p>
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* For information and examples of using menus see
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* <a href="http://java.sun.com/doc/books/tutorial/uiswing/components/menu.html">How to Use Menus</a>,
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* a section in <em>The Java Tutorial.</em>
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* <p>
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* <strong>Warning:</strong> Swing is not thread safe. For more
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* information see <a
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* href="package-summary.html#threading">Swing's Threading
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* Policy</a>.
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is
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* appropriate for short term storage or RMI between applications running
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* the same version of Swing. As of 1.4, support for long term storage
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* of all JavaBeans<sup><font size="-2">TM</font></sup>
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* has been added to the <code>java.beans</code> package.
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* Please see {@link java.beans.XMLEncoder}.
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*
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* @beaninfo
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* attribute: isContainer true
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* description: A popup window containing menu items displayed in a menu bar.
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*
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* @author Georges Saab
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* @author David Karlton
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* @author Arnaud Weber
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* @see JMenuItem
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* @see JSeparator
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* @see JMenuBar
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* @see JPopupMenu
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*/
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public class JMenu extends JMenuItem implements Accessible,MenuElement
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{
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/**
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* @see #getUIClassID
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* @see #readObject
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*/
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private static final String uiClassID = "MenuUI";
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/*
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* The popup menu portion of the menu.
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*/
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private JPopupMenu popupMenu;
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/*
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* The button's model listeners. Default is <code>null</code>.
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*/
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private ChangeListener menuChangeListener = null;
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/*
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* Only one <code>MenuEvent</code> is needed for each menu since the
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* event's only state is the source property. The source of events
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* generated is always "this". Default is <code>null</code>.
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*/
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private MenuEvent menuEvent = null;
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/* Registry of listeners created for <code>Action-JMenuItem</code>
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* linkage. This is needed so that references can
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* be cleaned up at remove time to allow garbage collection
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* Default is <code>null</code>.
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*/
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private static Hashtable listenerRegistry = null;
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/*
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* Used by the look and feel (L&F) code to handle
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* implementation specific menu behaviors.
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*/
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private int delay;
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/*
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* Location of the popup component. Location is <code>null</code>
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* if it was not customized by <code>setMenuLocation</code>
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*/
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private Point customMenuLocation = null;
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/* Diagnostic aids -- should be false for production builds. */
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private static final boolean TRACE = false; // trace creates and disposes
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private static final boolean VERBOSE = false; // show reuse hits/misses
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private static final boolean DEBUG = false; // show bad params, misc.
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/**
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* Constructs a new <code>JMenu</code> with no text.
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*/
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public JMenu() {
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this("");
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}
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/**
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* Constructs a new <code>JMenu</code> with the supplied string
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* as its text.
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*
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* @param s the text for the menu label
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*/
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public JMenu(String s) {
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super(s);
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}
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/**
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* Constructs a menu whose properties are taken from the
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* <code>Action</code> supplied.
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* @param a an <code>Action</code>
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*
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* @since 1.3
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*/
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public JMenu(Action a) {
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this();
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setAction(a);
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}
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/**
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* Constructs a new <code>JMenu</code> with the supplied string as
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* its text and specified as a tear-off menu or not.
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*
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* @param s the text for the menu label
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* @param b can the menu be torn off (not yet implemented)
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*/
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public JMenu(String s, boolean b) {
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this(s);
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}
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/**
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* Overriden to do nothing. We want JMenu to be focusable, but
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* <code>JMenuItem</code> doesn't want to be, thus we override this
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* do nothing. We don't invoke <code>setFocusable(true)</code> after
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* super's constructor has completed as this has the side effect that
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* <code>JMenu</code> will be considered traversable via the
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* keyboard, which we don't want. Making a Component traversable by
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* the keyboard after invoking <code>setFocusable(true)</code> is OK,
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* as <code>setFocusable</code> is new API
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* and is speced as such, but internally we don't want to use it like
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* this else we change the keyboard traversability.
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*/
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void initFocusability() {
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}
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/**
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* Resets the UI property with a value from the current look and feel.
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*
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* @see JComponent#updateUI
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*/
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public void updateUI() {
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setUI((MenuItemUI)UIManager.getUI(this));
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if ( popupMenu != null )
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{
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popupMenu.setUI((PopupMenuUI)UIManager.getUI(popupMenu));
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}
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}
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/**
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* Returns the name of the L&F class that renders this component.
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*
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* @return the string "MenuUI"
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* @see JComponent#getUIClassID
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* @see UIDefaults#getUI
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*/
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public String getUIClassID() {
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return uiClassID;
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}
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// public void repaint(long tm, int x, int y, int width, int height) {
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// Thread.currentThread().dumpStack();
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// super.repaint(tm,x,y,width,height);
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// }
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/**
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* Sets the data model for the "menu button" -- the label
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* that the user clicks to open or close the menu.
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*
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* @param newModel the <code>ButtonModel</code>
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* @see #getModel
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* @beaninfo
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* description: The menu's model
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* bound: true
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* expert: true
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* hidden: true
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*/
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public void setModel(ButtonModel newModel) {
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ButtonModel oldModel = getModel();
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super.setModel(newModel);
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if (oldModel != null && menuChangeListener != null) {
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oldModel.removeChangeListener(menuChangeListener);
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menuChangeListener = null;
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}
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model = newModel;
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if (newModel != null) {
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menuChangeListener = createMenuChangeListener();
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newModel.addChangeListener(menuChangeListener);
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}
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}
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/**
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* Returns true if the menu is currently selected (highlighted).
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*
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* @return true if the menu is selected, else false
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*/
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public boolean isSelected() {
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return getModel().isSelected();
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}
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/**
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* Sets the selection status of the menu.
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*
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* @param b true to select (highlight) the menu; false to de-select
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* the menu
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* @beaninfo
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* description: When the menu is selected, its popup child is shown.
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* expert: true
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* hidden: true
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*/
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public void setSelected(boolean b) {
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ButtonModel model = getModel();
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boolean oldValue = model.isSelected();
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// TIGER - 4840653
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// Removed code which fired an AccessibleState.SELECTED
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// PropertyChangeEvent since this resulted in two
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// identical events being fired since
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// AbstractButton.fireItemStateChanged also fires the
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// same event. This caused screen readers to speak the
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// name of the item twice.
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if (b != model.isSelected()) {
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getModel().setSelected(b);
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}
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}
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/**
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* Returns true if the menu's popup window is visible.
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*
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* @return true if the menu is visible, else false
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*/
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public boolean isPopupMenuVisible() {
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ensurePopupMenuCreated();
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return popupMenu.isVisible();
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}
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/**
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* Sets the visibility of the menu's popup. If the menu is
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* not enabled, this method will have no effect.
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*
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* @param b a boolean value -- true to make the menu visible,
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* false to hide it
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* @beaninfo
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* description: The popup menu's visibility
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* expert: true
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* hidden: true
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*/
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public void setPopupMenuVisible(boolean b) {
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if (DEBUG) {
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System.out.println("in JMenu.setPopupMenuVisible " + b);
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// Thread.dumpStack();
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}
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boolean isVisible = isPopupMenuVisible();
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if (b != isVisible && (isEnabled() || !b)) {
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ensurePopupMenuCreated();
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if ((b==true) && isShowing()) {
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// Set location of popupMenu (pulldown or pullright)
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Point p = getCustomMenuLocation();
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if (p == null) {
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p = getPopupMenuOrigin();
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}
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getPopupMenu().show(this, p.x, p.y);
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} else {
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getPopupMenu().setVisible(false);
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}
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}
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}
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/**
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* Computes the origin for the <code>JMenu</code>'s popup menu.
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* This method uses Look and Feel properties named
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* <code>Menu.menuPopupOffsetX</code>,
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* <code>Menu.menuPopupOffsetY</code>,
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* <code>Menu.submenuPopupOffsetX</code>, and
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* <code>Menu.submenuPopupOffsetY</code>
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* to adjust the exact location of popup.
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*
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* @return a <code>Point</code> in the coordinate space of the
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* menu which should be used as the origin
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* of the <code>JMenu</code>'s popup menu
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*
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* @since 1.3
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*/
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protected Point getPopupMenuOrigin() {
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int x = 0;
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int y = 0;
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JPopupMenu pm = getPopupMenu();
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// Figure out the sizes needed to caclulate the menu position
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Dimension s = getSize();
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Dimension pmSize = pm.getSize();
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// For the first time the menu is popped up,
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// the size has not yet been initiated
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if (pmSize.width==0) {
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pmSize = pm.getPreferredSize();
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}
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Point position = getLocationOnScreen();
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Toolkit toolkit = Toolkit.getDefaultToolkit();
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GraphicsConfiguration gc = getGraphicsConfiguration();
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Rectangle screenBounds = new Rectangle(toolkit.getScreenSize());
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GraphicsEnvironment ge =
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GraphicsEnvironment.getLocalGraphicsEnvironment();
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GraphicsDevice[] gd = ge.getScreenDevices();
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for(int i = 0; i < gd.length; i++) {
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if(gd[i].getType() == GraphicsDevice.TYPE_RASTER_SCREEN) {
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GraphicsConfiguration dgc =
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gd[i].getDefaultConfiguration();
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if(dgc.getBounds().contains(position)) {
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gc = dgc;
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break;
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}
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}
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}
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if (gc != null) {
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screenBounds = gc.getBounds();
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// take screen insets (e.g. taskbar) into account
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Insets screenInsets = toolkit.getScreenInsets(gc);
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screenBounds.width -=
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Math.abs(screenInsets.left + screenInsets.right);
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screenBounds.height -=
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Math.abs(screenInsets.top + screenInsets.bottom);
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position.x -= Math.abs(screenInsets.left);
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position.y -= Math.abs(screenInsets.top);
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}
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Container parent = getParent();
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if (parent instanceof JPopupMenu) {
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// We are a submenu (pull-right)
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int xOffset = UIManager.getInt("Menu.submenuPopupOffsetX");
|
|
421 |
int yOffset = UIManager.getInt("Menu.submenuPopupOffsetY");
|
|
422 |
|
|
423 |
if( SwingUtilities.isLeftToRight(this) ) {
|
|
424 |
// First determine x:
|
|
425 |
x = s.width + xOffset; // Prefer placement to the right
|
|
426 |
if (position.x + x + pmSize.width >= screenBounds.width
|
|
427 |
+ screenBounds.x &&
|
|
428 |
// popup doesn't fit - place it wherever there's more room
|
|
429 |
screenBounds.width - s.width < 2*(position.x
|
|
430 |
- screenBounds.x)) {
|
|
431 |
|
|
432 |
x = 0 - xOffset - pmSize.width;
|
|
433 |
}
|
|
434 |
} else {
|
|
435 |
// First determine x:
|
|
436 |
x = 0 - xOffset - pmSize.width; // Prefer placement to the left
|
|
437 |
if (position.x + x < screenBounds.x &&
|
|
438 |
// popup doesn't fit - place it wherever there's more room
|
|
439 |
screenBounds.width - s.width > 2*(position.x -
|
|
440 |
screenBounds.x)) {
|
|
441 |
|
|
442 |
x = s.width + xOffset;
|
|
443 |
}
|
|
444 |
}
|
|
445 |
// Then the y:
|
|
446 |
y = yOffset; // Prefer dropping down
|
|
447 |
if (position.y + y + pmSize.height >= screenBounds.height
|
|
448 |
+ screenBounds.y &&
|
|
449 |
// popup doesn't fit - place it wherever there's more room
|
|
450 |
screenBounds.height - s.height < 2*(position.y
|
|
451 |
- screenBounds.y)) {
|
|
452 |
|
|
453 |
y = s.height - yOffset - pmSize.height;
|
|
454 |
}
|
|
455 |
} else {
|
|
456 |
// We are a toplevel menu (pull-down)
|
|
457 |
int xOffset = UIManager.getInt("Menu.menuPopupOffsetX");
|
|
458 |
int yOffset = UIManager.getInt("Menu.menuPopupOffsetY");
|
|
459 |
|
|
460 |
if( SwingUtilities.isLeftToRight(this) ) {
|
|
461 |
// First determine the x:
|
|
462 |
x = xOffset; // Extend to the right
|
|
463 |
if (position.x + x + pmSize.width >= screenBounds.width
|
|
464 |
+ screenBounds.x &&
|
|
465 |
// popup doesn't fit - place it wherever there's more room
|
|
466 |
screenBounds.width - s.width < 2*(position.x
|
|
467 |
- screenBounds.x)) {
|
|
468 |
|
|
469 |
x = s.width - xOffset - pmSize.width;
|
|
470 |
}
|
|
471 |
} else {
|
|
472 |
// First determine the x:
|
|
473 |
x = s.width - xOffset - pmSize.width; // Extend to the left
|
|
474 |
if (position.x + x < screenBounds.x &&
|
|
475 |
// popup doesn't fit - place it wherever there's more room
|
|
476 |
screenBounds.width - s.width > 2*(position.x
|
|
477 |
- screenBounds.x)) {
|
|
478 |
|
|
479 |
x = xOffset;
|
|
480 |
}
|
|
481 |
}
|
|
482 |
// Then the y:
|
|
483 |
y = s.height + yOffset; // Prefer dropping down
|
|
484 |
if (position.y + y + pmSize.height >= screenBounds.height &&
|
|
485 |
// popup doesn't fit - place it wherever there's more room
|
|
486 |
screenBounds.height - s.height < 2*(position.y
|
|
487 |
- screenBounds.y)) {
|
|
488 |
|
|
489 |
y = 0 - yOffset - pmSize.height; // Otherwise drop 'up'
|
|
490 |
}
|
|
491 |
}
|
|
492 |
return new Point(x,y);
|
|
493 |
}
|
|
494 |
|
|
495 |
|
|
496 |
/**
|
|
497 |
* Returns the suggested delay, in milliseconds, before submenus
|
|
498 |
* are popped up or down.
|
|
499 |
* Each look and feel (L&F) may determine its own policy for
|
|
500 |
* observing the <code>delay</code> property.
|
|
501 |
* In most cases, the delay is not observed for top level menus
|
|
502 |
* or while dragging. The default for <code>delay</code> is 0.
|
|
503 |
* This method is a property of the look and feel code and is used
|
|
504 |
* to manage the idiosyncracies of the various UI implementations.
|
|
505 |
*
|
|
506 |
*
|
|
507 |
* @return the <code>delay</code> property
|
|
508 |
*/
|
|
509 |
public int getDelay() {
|
|
510 |
return delay;
|
|
511 |
}
|
|
512 |
|
|
513 |
/**
|
|
514 |
* Sets the suggested delay before the menu's <code>PopupMenu</code>
|
|
515 |
* is popped up or down. Each look and feel (L&F) may determine
|
|
516 |
* it's own policy for observing the delay property. In most cases,
|
|
517 |
* the delay is not observed for top level menus or while dragging.
|
|
518 |
* This method is a property of the look and feel code and is used
|
|
519 |
* to manage the idiosyncracies of the various UI implementations.
|
|
520 |
*
|
|
521 |
* @param d the number of milliseconds to delay
|
|
522 |
* @exception IllegalArgumentException if <code>d</code>
|
|
523 |
* is less than 0
|
|
524 |
* @beaninfo
|
|
525 |
* description: The delay between menu selection and making the popup menu visible
|
|
526 |
* expert: true
|
|
527 |
*/
|
|
528 |
public void setDelay(int d) {
|
|
529 |
if (d < 0)
|
|
530 |
throw new IllegalArgumentException("Delay must be a positive integer");
|
|
531 |
|
|
532 |
delay = d;
|
|
533 |
}
|
|
534 |
|
|
535 |
/**
|
|
536 |
* The window-closing listener for the popup.
|
|
537 |
*
|
|
538 |
* @see WinListener
|
|
539 |
*/
|
|
540 |
protected WinListener popupListener;
|
|
541 |
|
|
542 |
private void ensurePopupMenuCreated() {
|
|
543 |
if (popupMenu == null) {
|
|
544 |
final JMenu thisMenu = this;
|
|
545 |
this.popupMenu = new JPopupMenu();
|
|
546 |
popupMenu.setInvoker(this);
|
|
547 |
popupListener = createWinListener(popupMenu);
|
|
548 |
}
|
|
549 |
}
|
|
550 |
|
|
551 |
/*
|
|
552 |
* Return the customized location of the popup component.
|
|
553 |
*/
|
|
554 |
private Point getCustomMenuLocation() {
|
|
555 |
return customMenuLocation;
|
|
556 |
}
|
|
557 |
|
|
558 |
/**
|
|
559 |
* Sets the location of the popup component.
|
|
560 |
*
|
|
561 |
* @param x the x coordinate of the popup's new position
|
|
562 |
* @param y the y coordinate of the popup's new position
|
|
563 |
*/
|
|
564 |
public void setMenuLocation(int x, int y) {
|
|
565 |
customMenuLocation = new Point(x, y);
|
|
566 |
if (popupMenu != null)
|
|
567 |
popupMenu.setLocation(x, y);
|
|
568 |
}
|
|
569 |
|
|
570 |
/**
|
|
571 |
* Appends a menu item to the end of this menu.
|
|
572 |
* Returns the menu item added.
|
|
573 |
*
|
|
574 |
* @param menuItem the <code>JMenuitem</code> to be added
|
|
575 |
* @return the <code>JMenuItem</code> added
|
|
576 |
*/
|
|
577 |
public JMenuItem add(JMenuItem menuItem) {
|
|
578 |
ensurePopupMenuCreated();
|
|
579 |
return popupMenu.add(menuItem);
|
|
580 |
}
|
|
581 |
|
|
582 |
/**
|
|
583 |
* Appends a component to the end of this menu.
|
|
584 |
* Returns the component added.
|
|
585 |
*
|
|
586 |
* @param c the <code>Component</code> to add
|
|
587 |
* @return the <code>Component</code> added
|
|
588 |
*/
|
|
589 |
public Component add(Component c) {
|
|
590 |
ensurePopupMenuCreated();
|
|
591 |
popupMenu.add(c);
|
|
592 |
return c;
|
|
593 |
}
|
|
594 |
|
|
595 |
/**
|
|
596 |
* Adds the specified component to this container at the given
|
|
597 |
* position. If <code>index</code> equals -1, the component will
|
|
598 |
* be appended to the end.
|
|
599 |
* @param c the <code>Component</code> to add
|
|
600 |
* @param index the position at which to insert the component
|
|
601 |
* @return the <code>Component</code> added
|
|
602 |
* @see #remove
|
|
603 |
* @see java.awt.Container#add(Component, int)
|
|
604 |
*/
|
|
605 |
public Component add(Component c, int index) {
|
|
606 |
ensurePopupMenuCreated();
|
|
607 |
popupMenu.add(c, index);
|
|
608 |
return c;
|
|
609 |
}
|
|
610 |
|
|
611 |
/**
|
|
612 |
* Creates a new menu item with the specified text and appends
|
|
613 |
* it to the end of this menu.
|
|
614 |
*
|
|
615 |
* @param s the string for the menu item to be added
|
|
616 |
*/
|
|
617 |
public JMenuItem add(String s) {
|
|
618 |
return add(new JMenuItem(s));
|
|
619 |
}
|
|
620 |
|
|
621 |
/**
|
|
622 |
* Creates a new menu item attached to the specified
|
|
623 |
* <code>Action</code> object and appends it to the end of this menu.
|
|
624 |
*
|
|
625 |
* @param a the <code>Action</code> for the menu item to be added
|
|
626 |
* @see Action
|
|
627 |
*/
|
|
628 |
public JMenuItem add(Action a) {
|
|
629 |
JMenuItem mi = createActionComponent(a);
|
|
630 |
mi.setAction(a);
|
|
631 |
add(mi);
|
|
632 |
return mi;
|
|
633 |
}
|
|
634 |
|
|
635 |
/**
|
|
636 |
* Factory method which creates the <code>JMenuItem</code> for
|
|
637 |
* <code>Action</code>s added to the <code>JMenu</code>.
|
|
638 |
*
|
|
639 |
* @param a the <code>Action</code> for the menu item to be added
|
|
640 |
* @return the new menu item
|
|
641 |
* @see Action
|
|
642 |
*
|
|
643 |
* @since 1.3
|
|
644 |
*/
|
|
645 |
protected JMenuItem createActionComponent(Action a) {
|
|
646 |
JMenuItem mi = new JMenuItem() {
|
|
647 |
protected PropertyChangeListener createActionPropertyChangeListener(Action a) {
|
|
648 |
PropertyChangeListener pcl = createActionChangeListener(this);
|
|
649 |
if (pcl == null) {
|
|
650 |
pcl = super.createActionPropertyChangeListener(a);
|
|
651 |
}
|
|
652 |
return pcl;
|
|
653 |
}
|
|
654 |
};
|
|
655 |
mi.setHorizontalTextPosition(JButton.TRAILING);
|
|
656 |
mi.setVerticalTextPosition(JButton.CENTER);
|
|
657 |
return mi;
|
|
658 |
}
|
|
659 |
|
|
660 |
/**
|
|
661 |
* Returns a properly configured <code>PropertyChangeListener</code>
|
|
662 |
* which updates the control as changes to the <code>Action</code> occur.
|
|
663 |
*/
|
|
664 |
protected PropertyChangeListener createActionChangeListener(JMenuItem b) {
|
|
665 |
return b.createActionPropertyChangeListener0(b.getAction());
|
|
666 |
}
|
|
667 |
|
|
668 |
/**
|
|
669 |
* Appends a new separator to the end of the menu.
|
|
670 |
*/
|
|
671 |
public void addSeparator()
|
|
672 |
{
|
|
673 |
ensurePopupMenuCreated();
|
|
674 |
popupMenu.addSeparator();
|
|
675 |
}
|
|
676 |
|
|
677 |
/**
|
|
678 |
* Inserts a new menu item with the specified text at a
|
|
679 |
* given position.
|
|
680 |
*
|
|
681 |
* @param s the text for the menu item to add
|
|
682 |
* @param pos an integer specifying the position at which to add the
|
|
683 |
* new menu item
|
|
684 |
* @exception IllegalArgumentException when the value of
|
|
685 |
* <code>pos</code> < 0
|
|
686 |
*/
|
|
687 |
public void insert(String s, int pos) {
|
|
688 |
if (pos < 0) {
|
|
689 |
throw new IllegalArgumentException("index less than zero.");
|
|
690 |
}
|
|
691 |
|
|
692 |
ensurePopupMenuCreated();
|
|
693 |
popupMenu.insert(new JMenuItem(s), pos);
|
|
694 |
}
|
|
695 |
|
|
696 |
/**
|
|
697 |
* Inserts the specified <code>JMenuitem</code> at a given position.
|
|
698 |
*
|
|
699 |
* @param mi the <code>JMenuitem</code> to add
|
|
700 |
* @param pos an integer specifying the position at which to add the
|
|
701 |
* new <code>JMenuitem</code>
|
|
702 |
* @return the new menu item
|
|
703 |
* @exception IllegalArgumentException if the value of
|
|
704 |
* <code>pos</code> < 0
|
|
705 |
*/
|
|
706 |
public JMenuItem insert(JMenuItem mi, int pos) {
|
|
707 |
if (pos < 0) {
|
|
708 |
throw new IllegalArgumentException("index less than zero.");
|
|
709 |
}
|
|
710 |
ensurePopupMenuCreated();
|
|
711 |
popupMenu.insert(mi, pos);
|
|
712 |
return mi;
|
|
713 |
}
|
|
714 |
|
|
715 |
/**
|
|
716 |
* Inserts a new menu item attached to the specified <code>Action</code>
|
|
717 |
* object at a given position.
|
|
718 |
*
|
|
719 |
* @param a the <code>Action</code> object for the menu item to add
|
|
720 |
* @param pos an integer specifying the position at which to add the
|
|
721 |
* new menu item
|
|
722 |
* @exception IllegalArgumentException if the value of
|
|
723 |
* <code>pos</code> < 0
|
|
724 |
*/
|
|
725 |
public JMenuItem insert(Action a, int pos) {
|
|
726 |
if (pos < 0) {
|
|
727 |
throw new IllegalArgumentException("index less than zero.");
|
|
728 |
}
|
|
729 |
|
|
730 |
ensurePopupMenuCreated();
|
|
731 |
JMenuItem mi = new JMenuItem(a);
|
|
732 |
mi.setHorizontalTextPosition(JButton.TRAILING);
|
|
733 |
mi.setVerticalTextPosition(JButton.CENTER);
|
|
734 |
popupMenu.insert(mi, pos);
|
|
735 |
return mi;
|
|
736 |
}
|
|
737 |
|
|
738 |
/**
|
|
739 |
* Inserts a separator at the specified position.
|
|
740 |
*
|
|
741 |
* @param index an integer specifying the position at which to
|
|
742 |
* insert the menu separator
|
|
743 |
* @exception IllegalArgumentException if the value of
|
|
744 |
* <code>index</code> < 0
|
|
745 |
*/
|
|
746 |
public void insertSeparator(int index) {
|
|
747 |
if (index < 0) {
|
|
748 |
throw new IllegalArgumentException("index less than zero.");
|
|
749 |
}
|
|
750 |
|
|
751 |
ensurePopupMenuCreated();
|
|
752 |
popupMenu.insert( new JPopupMenu.Separator(), index );
|
|
753 |
}
|
|
754 |
|
|
755 |
/**
|
|
756 |
* Returns the <code>JMenuItem</code> at the specified position.
|
|
757 |
* If the component at <code>pos</code> is not a menu item,
|
|
758 |
* <code>null</code> is returned.
|
|
759 |
* This method is included for AWT compatibility.
|
|
760 |
*
|
|
761 |
* @param pos an integer specifying the position
|
|
762 |
* @exception IllegalArgumentException if the value of
|
|
763 |
* <code>pos</code> < 0
|
|
764 |
* @return the menu item at the specified position; or <code>null</code>
|
|
765 |
* if the item as the specified position is not a menu item
|
|
766 |
*/
|
|
767 |
public JMenuItem getItem(int pos) {
|
|
768 |
if (pos < 0) {
|
|
769 |
throw new IllegalArgumentException("index less than zero.");
|
|
770 |
}
|
|
771 |
|
|
772 |
Component c = getMenuComponent(pos);
|
|
773 |
if (c instanceof JMenuItem) {
|
|
774 |
JMenuItem mi = (JMenuItem) c;
|
|
775 |
return mi;
|
|
776 |
}
|
|
777 |
|
|
778 |
// 4173633
|
|
779 |
return null;
|
|
780 |
}
|
|
781 |
|
|
782 |
/**
|
|
783 |
* Returns the number of items on the menu, including separators.
|
|
784 |
* This method is included for AWT compatibility.
|
|
785 |
*
|
|
786 |
* @return an integer equal to the number of items on the menu
|
|
787 |
* @see #getMenuComponentCount
|
|
788 |
*/
|
|
789 |
public int getItemCount() {
|
|
790 |
return getMenuComponentCount();
|
|
791 |
}
|
|
792 |
|
|
793 |
/**
|
|
794 |
* Returns true if the menu can be torn off. This method is not
|
|
795 |
* yet implemented.
|
|
796 |
*
|
|
797 |
* @return true if the menu can be torn off, else false
|
|
798 |
* @exception Error if invoked -- this method is not yet implemented
|
|
799 |
*/
|
|
800 |
public boolean isTearOff() {
|
|
801 |
throw new Error("boolean isTearOff() {} not yet implemented");
|
|
802 |
}
|
|
803 |
|
|
804 |
/**
|
|
805 |
* Removes the specified menu item from this menu. If there is no
|
|
806 |
* popup menu, this method will have no effect.
|
|
807 |
*
|
|
808 |
* @param item the <code>JMenuItem</code> to be removed from the menu
|
|
809 |
*/
|
|
810 |
public void remove(JMenuItem item) {
|
|
811 |
if (popupMenu != null)
|
|
812 |
popupMenu.remove(item);
|
|
813 |
}
|
|
814 |
|
|
815 |
/**
|
|
816 |
* Removes the menu item at the specified index from this menu.
|
|
817 |
*
|
|
818 |
* @param pos the position of the item to be removed
|
|
819 |
* @exception IllegalArgumentException if the value of
|
|
820 |
* <code>pos</code> < 0, or if <code>pos</code>
|
|
821 |
* is greater than the number of menu items
|
|
822 |
*/
|
|
823 |
public void remove(int pos) {
|
|
824 |
if (pos < 0) {
|
|
825 |
throw new IllegalArgumentException("index less than zero.");
|
|
826 |
}
|
|
827 |
if (pos > getItemCount()) {
|
|
828 |
throw new IllegalArgumentException("index greater than the number of items.");
|
|
829 |
}
|
|
830 |
if (popupMenu != null)
|
|
831 |
popupMenu.remove(pos);
|
|
832 |
}
|
|
833 |
|
|
834 |
/**
|
|
835 |
* Removes the component <code>c</code> from this menu.
|
|
836 |
*
|
|
837 |
* @param c the component to be removed
|
|
838 |
*/
|
|
839 |
public void remove(Component c) {
|
|
840 |
if (popupMenu != null)
|
|
841 |
popupMenu.remove(c);
|
|
842 |
}
|
|
843 |
|
|
844 |
/**
|
|
845 |
* Removes all menu items from this menu.
|
|
846 |
*/
|
|
847 |
public void removeAll() {
|
|
848 |
if (popupMenu != null)
|
|
849 |
popupMenu.removeAll();
|
|
850 |
}
|
|
851 |
|
|
852 |
/**
|
|
853 |
* Returns the number of components on the menu.
|
|
854 |
*
|
|
855 |
* @return an integer containing the number of components on the menu
|
|
856 |
*/
|
|
857 |
public int getMenuComponentCount() {
|
|
858 |
int componentCount = 0;
|
|
859 |
if (popupMenu != null)
|
|
860 |
componentCount = popupMenu.getComponentCount();
|
|
861 |
return componentCount;
|
|
862 |
}
|
|
863 |
|
|
864 |
/**
|
|
865 |
* Returns the component at position <code>n</code>.
|
|
866 |
*
|
|
867 |
* @param n the position of the component to be returned
|
|
868 |
* @return the component requested, or <code>null</code>
|
|
869 |
* if there is no popup menu
|
|
870 |
*
|
|
871 |
*/
|
|
872 |
public Component getMenuComponent(int n) {
|
|
873 |
if (popupMenu != null)
|
|
874 |
return popupMenu.getComponent(n);
|
|
875 |
|
|
876 |
return null;
|
|
877 |
}
|
|
878 |
|
|
879 |
/**
|
|
880 |
* Returns an array of <code>Component</code>s of the menu's
|
|
881 |
* subcomponents. Note that this returns all <code>Component</code>s
|
|
882 |
* in the popup menu, including separators.
|
|
883 |
*
|
|
884 |
* @return an array of <code>Component</code>s or an empty array
|
|
885 |
* if there is no popup menu
|
|
886 |
*/
|
|
887 |
public Component[] getMenuComponents() {
|
|
888 |
if (popupMenu != null)
|
|
889 |
return popupMenu.getComponents();
|
|
890 |
|
|
891 |
return new Component[0];
|
|
892 |
}
|
|
893 |
|
|
894 |
/**
|
|
895 |
* Returns true if the menu is a 'top-level menu', that is, if it is
|
|
896 |
* the direct child of a menubar.
|
|
897 |
*
|
|
898 |
* @return true if the menu is activated from the menu bar;
|
|
899 |
* false if the menu is activated from a menu item
|
|
900 |
* on another menu
|
|
901 |
*/
|
|
902 |
public boolean isTopLevelMenu() {
|
|
903 |
if (getParent() instanceof JMenuBar)
|
|
904 |
return true;
|
|
905 |
|
|
906 |
return false;
|
|
907 |
}
|
|
908 |
|
|
909 |
/**
|
|
910 |
* Returns true if the specified component exists in the
|
|
911 |
* submenu hierarchy.
|
|
912 |
*
|
|
913 |
* @param c the <code>Component</code> to be tested
|
|
914 |
* @return true if the <code>Component</code> exists, false otherwise
|
|
915 |
*/
|
|
916 |
public boolean isMenuComponent(Component c) {
|
|
917 |
// Are we in the MenuItem part of the menu
|
|
918 |
if (c == this)
|
|
919 |
return true;
|
|
920 |
// Are we in the PopupMenu?
|
|
921 |
if (c instanceof JPopupMenu) {
|
|
922 |
JPopupMenu comp = (JPopupMenu) c;
|
|
923 |
if (comp == this.getPopupMenu())
|
|
924 |
return true;
|
|
925 |
}
|
|
926 |
// Are we in a Component on the PopupMenu
|
|
927 |
int ncomponents = this.getMenuComponentCount();
|
|
928 |
Component[] component = this.getMenuComponents();
|
|
929 |
for (int i = 0 ; i < ncomponents ; i++) {
|
|
930 |
Component comp = component[i];
|
|
931 |
// Are we in the current component?
|
|
932 |
if (comp == c)
|
|
933 |
return true;
|
|
934 |
// Hmmm, what about Non-menu containers?
|
|
935 |
|
|
936 |
// Recursive call for the Menu case
|
|
937 |
if (comp instanceof JMenu) {
|
|
938 |
JMenu subMenu = (JMenu) comp;
|
|
939 |
if (subMenu.isMenuComponent(c))
|
|
940 |
return true;
|
|
941 |
}
|
|
942 |
}
|
|
943 |
return false;
|
|
944 |
}
|
|
945 |
|
|
946 |
|
|
947 |
/*
|
|
948 |
* Returns a point in the coordinate space of this menu's popupmenu
|
|
949 |
* which corresponds to the point <code>p</code> in the menu's
|
|
950 |
* coordinate space.
|
|
951 |
*
|
|
952 |
* @param p the point to be translated
|
|
953 |
* @return the point in the coordinate space of this menu's popupmenu
|
|
954 |
*/
|
|
955 |
private Point translateToPopupMenu(Point p) {
|
|
956 |
return translateToPopupMenu(p.x, p.y);
|
|
957 |
}
|
|
958 |
|
|
959 |
/*
|
|
960 |
* Returns a point in the coordinate space of this menu's popupmenu
|
|
961 |
* which corresponds to the point (x,y) in the menu's coordinate space.
|
|
962 |
*
|
|
963 |
* @param x the x coordinate of the point to be translated
|
|
964 |
* @param y the y coordinate of the point to be translated
|
|
965 |
* @return the point in the coordinate space of this menu's popupmenu
|
|
966 |
*/
|
|
967 |
private Point translateToPopupMenu(int x, int y) {
|
|
968 |
int newX;
|
|
969 |
int newY;
|
|
970 |
|
|
971 |
if (getParent() instanceof JPopupMenu) {
|
|
972 |
newX = x - getSize().width;
|
|
973 |
newY = y;
|
|
974 |
} else {
|
|
975 |
newX = x;
|
|
976 |
newY = y - getSize().height;
|
|
977 |
}
|
|
978 |
|
|
979 |
return new Point(newX, newY);
|
|
980 |
}
|
|
981 |
|
|
982 |
/**
|
|
983 |
* Returns the popupmenu associated with this menu. If there is
|
|
984 |
* no popupmenu, it will create one.
|
|
985 |
*/
|
|
986 |
public JPopupMenu getPopupMenu() {
|
|
987 |
ensurePopupMenuCreated();
|
|
988 |
return popupMenu;
|
|
989 |
}
|
|
990 |
|
|
991 |
/**
|
|
992 |
* Adds a listener for menu events.
|
|
993 |
*
|
|
994 |
* @param l the listener to be added
|
|
995 |
*/
|
|
996 |
public void addMenuListener(MenuListener l) {
|
|
997 |
listenerList.add(MenuListener.class, l);
|
|
998 |
}
|
|
999 |
|
|
1000 |
/**
|
|
1001 |
* Removes a listener for menu events.
|
|
1002 |
*
|
|
1003 |
* @param l the listener to be removed
|
|
1004 |
*/
|
|
1005 |
public void removeMenuListener(MenuListener l) {
|
|
1006 |
listenerList.remove(MenuListener.class, l);
|
|
1007 |
}
|
|
1008 |
|
|
1009 |
/**
|
|
1010 |
* Returns an array of all the <code>MenuListener</code>s added
|
|
1011 |
* to this JMenu with addMenuListener().
|
|
1012 |
*
|
|
1013 |
* @return all of the <code>MenuListener</code>s added or an empty
|
|
1014 |
* array if no listeners have been added
|
|
1015 |
* @since 1.4
|
|
1016 |
*/
|
|
1017 |
public MenuListener[] getMenuListeners() {
|
|
1018 |
return (MenuListener[])listenerList.getListeners(MenuListener.class);
|
|
1019 |
}
|
|
1020 |
|
|
1021 |
/**
|
|
1022 |
* Notifies all listeners that have registered interest for
|
|
1023 |
* notification on this event type. The event instance
|
|
1024 |
* is created lazily.
|
|
1025 |
*
|
|
1026 |
* @exception Error if there is a <code>null</code> listener
|
|
1027 |
* @see EventListenerList
|
|
1028 |
*/
|
|
1029 |
protected void fireMenuSelected() {
|
|
1030 |
if (DEBUG) {
|
|
1031 |
System.out.println("In JMenu.fireMenuSelected");
|
|
1032 |
}
|
|
1033 |
// Guaranteed to return a non-null array
|
|
1034 |
Object[] listeners = listenerList.getListenerList();
|
|
1035 |
// Process the listeners last to first, notifying
|
|
1036 |
// those that are interested in this event
|
|
1037 |
for (int i = listeners.length-2; i>=0; i-=2) {
|
|
1038 |
if (listeners[i]==MenuListener.class) {
|
|
1039 |
if (listeners[i+1]== null) {
|
|
1040 |
throw new Error(getText() +" has a NULL Listener!! " + i);
|
|
1041 |
} else {
|
|
1042 |
// Lazily create the event:
|
|
1043 |
if (menuEvent == null)
|
|
1044 |
menuEvent = new MenuEvent(this);
|
|
1045 |
((MenuListener)listeners[i+1]).menuSelected(menuEvent);
|
|
1046 |
}
|
|
1047 |
}
|
|
1048 |
}
|
|
1049 |
}
|
|
1050 |
|
|
1051 |
/**
|
|
1052 |
* Notifies all listeners that have registered interest for
|
|
1053 |
* notification on this event type. The event instance
|
|
1054 |
* is created lazily.
|
|
1055 |
*
|
|
1056 |
* @exception Error if there is a <code>null</code> listener
|
|
1057 |
* @see EventListenerList
|
|
1058 |
*/
|
|
1059 |
protected void fireMenuDeselected() {
|
|
1060 |
if (DEBUG) {
|
|
1061 |
System.out.println("In JMenu.fireMenuDeselected");
|
|
1062 |
}
|
|
1063 |
// Guaranteed to return a non-null array
|
|
1064 |
Object[] listeners = listenerList.getListenerList();
|
|
1065 |
// Process the listeners last to first, notifying
|
|
1066 |
// those that are interested in this event
|
|
1067 |
for (int i = listeners.length-2; i>=0; i-=2) {
|
|
1068 |
if (listeners[i]==MenuListener.class) {
|
|
1069 |
if (listeners[i+1]== null) {
|
|
1070 |
throw new Error(getText() +" has a NULL Listener!! " + i);
|
|
1071 |
} else {
|
|
1072 |
// Lazily create the event:
|
|
1073 |
if (menuEvent == null)
|
|
1074 |
menuEvent = new MenuEvent(this);
|
|
1075 |
((MenuListener)listeners[i+1]).menuDeselected(menuEvent);
|
|
1076 |
}
|
|
1077 |
}
|
|
1078 |
}
|
|
1079 |
}
|
|
1080 |
|
|
1081 |
/**
|
|
1082 |
* Notifies all listeners that have registered interest for
|
|
1083 |
* notification on this event type. The event instance
|
|
1084 |
* is created lazily.
|
|
1085 |
*
|
|
1086 |
* @exception Error if there is a <code>null</code> listener
|
|
1087 |
* @see EventListenerList
|
|
1088 |
*/
|
|
1089 |
protected void fireMenuCanceled() {
|
|
1090 |
if (DEBUG) {
|
|
1091 |
System.out.println("In JMenu.fireMenuCanceled");
|
|
1092 |
}
|
|
1093 |
// Guaranteed to return a non-null array
|
|
1094 |
Object[] listeners = listenerList.getListenerList();
|
|
1095 |
// Process the listeners last to first, notifying
|
|
1096 |
// those that are interested in this event
|
|
1097 |
for (int i = listeners.length-2; i>=0; i-=2) {
|
|
1098 |
if (listeners[i]==MenuListener.class) {
|
|
1099 |
if (listeners[i+1]== null) {
|
|
1100 |
throw new Error(getText() +" has a NULL Listener!! "
|
|
1101 |
+ i);
|
|
1102 |
} else {
|
|
1103 |
// Lazily create the event:
|
|
1104 |
if (menuEvent == null)
|
|
1105 |
menuEvent = new MenuEvent(this);
|
|
1106 |
((MenuListener)listeners[i+1]).menuCanceled(menuEvent);
|
|
1107 |
}
|
|
1108 |
}
|
|
1109 |
}
|
|
1110 |
}
|
|
1111 |
|
|
1112 |
// Overriden to do nothing, JMenu doesn't support an accelerator
|
|
1113 |
void configureAcceleratorFromAction(Action a) {
|
|
1114 |
}
|
|
1115 |
|
|
1116 |
class MenuChangeListener implements ChangeListener, Serializable {
|
|
1117 |
boolean isSelected = false;
|
|
1118 |
public void stateChanged(ChangeEvent e) {
|
|
1119 |
ButtonModel model = (ButtonModel) e.getSource();
|
|
1120 |
boolean modelSelected = model.isSelected();
|
|
1121 |
|
|
1122 |
if (modelSelected != isSelected) {
|
|
1123 |
if (modelSelected == true) {
|
|
1124 |
fireMenuSelected();
|
|
1125 |
} else {
|
|
1126 |
fireMenuDeselected();
|
|
1127 |
}
|
|
1128 |
isSelected = modelSelected;
|
|
1129 |
}
|
|
1130 |
}
|
|
1131 |
}
|
|
1132 |
|
|
1133 |
private ChangeListener createMenuChangeListener() {
|
|
1134 |
return new MenuChangeListener();
|
|
1135 |
}
|
|
1136 |
|
|
1137 |
|
|
1138 |
/**
|
|
1139 |
* Creates a window-closing listener for the popup.
|
|
1140 |
*
|
|
1141 |
* @param p the <code>JPopupMenu</code>
|
|
1142 |
* @return the new window-closing listener
|
|
1143 |
*
|
|
1144 |
* @see WinListener
|
|
1145 |
*/
|
|
1146 |
protected WinListener createWinListener(JPopupMenu p) {
|
|
1147 |
return new WinListener(p);
|
|
1148 |
}
|
|
1149 |
|
|
1150 |
/**
|
|
1151 |
* A listener class that watches for a popup window closing.
|
|
1152 |
* When the popup is closing, the listener deselects the menu.
|
|
1153 |
* <p>
|
|
1154 |
* <strong>Warning:</strong>
|
|
1155 |
* Serialized objects of this class will not be compatible with
|
|
1156 |
* future Swing releases. The current serialization support is
|
|
1157 |
* appropriate for short term storage or RMI between applications running
|
|
1158 |
* the same version of Swing. As of 1.4, support for long term storage
|
|
1159 |
* of all JavaBeans<sup><font size="-2">TM</font></sup>
|
|
1160 |
* has been added to the <code>java.beans</code> package.
|
|
1161 |
* Please see {@link java.beans.XMLEncoder}.
|
|
1162 |
*/
|
|
1163 |
protected class WinListener extends WindowAdapter implements Serializable {
|
|
1164 |
JPopupMenu popupMenu;
|
|
1165 |
/**
|
|
1166 |
* Create the window listener for the specified popup.
|
|
1167 |
* @since 1.4
|
|
1168 |
*/
|
|
1169 |
public WinListener(JPopupMenu p) {
|
|
1170 |
this.popupMenu = p;
|
|
1171 |
}
|
|
1172 |
/**
|
|
1173 |
* Deselect the menu when the popup is closed from outside.
|
|
1174 |
*/
|
|
1175 |
public void windowClosing(WindowEvent e) {
|
|
1176 |
setSelected(false);
|
|
1177 |
}
|
|
1178 |
}
|
|
1179 |
|
|
1180 |
/**
|
|
1181 |
* Messaged when the menubar selection changes to activate or
|
|
1182 |
* deactivate this menu.
|
|
1183 |
* Overrides <code>JMenuItem.menuSelectionChanged</code>.
|
|
1184 |
*
|
|
1185 |
* @param isIncluded true if this menu is active, false if
|
|
1186 |
* it is not
|
|
1187 |
*/
|
|
1188 |
public void menuSelectionChanged(boolean isIncluded) {
|
|
1189 |
if (DEBUG) {
|
|
1190 |
System.out.println("In JMenu.menuSelectionChanged to " + isIncluded);
|
|
1191 |
}
|
|
1192 |
setSelected(isIncluded);
|
|
1193 |
}
|
|
1194 |
|
|
1195 |
/**
|
|
1196 |
* Returns an array of <code>MenuElement</code>s containing the submenu
|
|
1197 |
* for this menu component. If popup menu is <code>null</code> returns
|
|
1198 |
* an empty array. This method is required to conform to the
|
|
1199 |
* <code>MenuElement</code> interface. Note that since
|
|
1200 |
* <code>JSeparator</code>s do not conform to the <code>MenuElement</code>
|
|
1201 |
* interface, this array will only contain <code>JMenuItem</code>s.
|
|
1202 |
*
|
|
1203 |
* @return an array of <code>MenuElement</code> objects
|
|
1204 |
*/
|
|
1205 |
public MenuElement[] getSubElements() {
|
|
1206 |
if(popupMenu == null)
|
|
1207 |
return new MenuElement[0];
|
|
1208 |
else {
|
|
1209 |
MenuElement result[] = new MenuElement[1];
|
|
1210 |
result[0] = popupMenu;
|
|
1211 |
return result;
|
|
1212 |
}
|
|
1213 |
}
|
|
1214 |
|
|
1215 |
|
|
1216 |
// implements javax.swing.MenuElement
|
|
1217 |
/**
|
|
1218 |
* Returns the <code>java.awt.Component</code> used to
|
|
1219 |
* paint this <code>MenuElement</code>.
|
|
1220 |
* The returned component is used to convert events and detect if
|
|
1221 |
* an event is inside a menu component.
|
|
1222 |
*/
|
|
1223 |
public Component getComponent() {
|
|
1224 |
return this;
|
|
1225 |
}
|
|
1226 |
|
|
1227 |
|
|
1228 |
/**
|
|
1229 |
* Sets the <code>ComponentOrientation</code> property of this menu
|
|
1230 |
* and all components contained within it. This includes all
|
|
1231 |
* components returned by {@link #getMenuComponents getMenuComponents}.
|
|
1232 |
*
|
|
1233 |
* @param o the new component orientation of this menu and
|
|
1234 |
* the components contained within it.
|
|
1235 |
* @exception NullPointerException if <code>orientation</code> is null.
|
|
1236 |
* @see java.awt.Component#setComponentOrientation
|
|
1237 |
* @see java.awt.Component#getComponentOrientation
|
|
1238 |
* @since 1.4
|
|
1239 |
*/
|
|
1240 |
public void applyComponentOrientation(ComponentOrientation o) {
|
|
1241 |
super.applyComponentOrientation(o);
|
|
1242 |
|
|
1243 |
if ( popupMenu != null ) {
|
|
1244 |
int ncomponents = getMenuComponentCount();
|
|
1245 |
for (int i = 0 ; i < ncomponents ; ++i) {
|
|
1246 |
getMenuComponent(i).applyComponentOrientation(o);
|
|
1247 |
}
|
|
1248 |
popupMenu.setComponentOrientation(o);
|
|
1249 |
}
|
|
1250 |
}
|
|
1251 |
|
|
1252 |
public void setComponentOrientation(ComponentOrientation o) {
|
|
1253 |
super.setComponentOrientation(o);
|
|
1254 |
if ( popupMenu != null ) {
|
|
1255 |
popupMenu.setComponentOrientation(o);
|
|
1256 |
}
|
|
1257 |
}
|
|
1258 |
|
|
1259 |
/**
|
|
1260 |
* <code>setAccelerator</code> is not defined for <code>JMenu</code>.
|
|
1261 |
* Use <code>setMnemonic</code> instead.
|
|
1262 |
* @param keyStroke the keystroke combination which will invoke
|
|
1263 |
* the <code>JMenuItem</code>'s actionlisteners
|
|
1264 |
* without navigating the menu hierarchy
|
|
1265 |
* @exception Error if invoked -- this method is not defined for JMenu.
|
|
1266 |
* Use <code>setMnemonic</code> instead
|
|
1267 |
*
|
|
1268 |
* @beaninfo
|
|
1269 |
* description: The keystroke combination which will invoke the JMenuItem's
|
|
1270 |
* actionlisteners without navigating the menu hierarchy
|
|
1271 |
* hidden: true
|
|
1272 |
*/
|
|
1273 |
public void setAccelerator(KeyStroke keyStroke) {
|
|
1274 |
throw new Error("setAccelerator() is not defined for JMenu. Use setMnemonic() instead.");
|
|
1275 |
}
|
|
1276 |
|
|
1277 |
/**
|
|
1278 |
* Processes key stroke events such as mnemonics and accelerators.
|
|
1279 |
*
|
|
1280 |
* @param evt the key event to be processed
|
|
1281 |
*/
|
|
1282 |
protected void processKeyEvent(KeyEvent evt) {
|
|
1283 |
MenuSelectionManager.defaultManager().processKeyEvent(evt);
|
|
1284 |
if (evt.isConsumed())
|
|
1285 |
return;
|
|
1286 |
|
|
1287 |
super.processKeyEvent(evt);
|
|
1288 |
}
|
|
1289 |
|
|
1290 |
/**
|
|
1291 |
* Programmatically performs a "click". This overrides the method
|
|
1292 |
* <code>AbstractButton.doClick</code> in order to make the menu pop up.
|
|
1293 |
* @param pressTime indicates the number of milliseconds the
|
|
1294 |
* button was pressed for
|
|
1295 |
*/
|
|
1296 |
public void doClick(int pressTime) {
|
|
1297 |
MenuElement me[] = buildMenuElementArray(this);
|
|
1298 |
MenuSelectionManager.defaultManager().setSelectedPath(me);
|
|
1299 |
}
|
|
1300 |
|
|
1301 |
/*
|
|
1302 |
* Build an array of menu elements - from <code>PopupMenu</code> to
|
|
1303 |
* the root <code>JMenuBar</code>.
|
|
1304 |
* @param leaf the leaf node from which to start building up the array
|
|
1305 |
* @return the array of menu items
|
|
1306 |
*/
|
|
1307 |
private MenuElement[] buildMenuElementArray(JMenu leaf) {
|
|
1308 |
Vector elements = new Vector();
|
|
1309 |
Component current = leaf.getPopupMenu();
|
|
1310 |
JPopupMenu pop;
|
|
1311 |
JMenu menu;
|
|
1312 |
JMenuBar bar;
|
|
1313 |
|
|
1314 |
while (true) {
|
|
1315 |
if (current instanceof JPopupMenu) {
|
|
1316 |
pop = (JPopupMenu) current;
|
|
1317 |
elements.insertElementAt(pop, 0);
|
|
1318 |
current = pop.getInvoker();
|
|
1319 |
} else if (current instanceof JMenu) {
|
|
1320 |
menu = (JMenu) current;
|
|
1321 |
elements.insertElementAt(menu, 0);
|
|
1322 |
current = menu.getParent();
|
|
1323 |
} else if (current instanceof JMenuBar) {
|
|
1324 |
bar = (JMenuBar) current;
|
|
1325 |
elements.insertElementAt(bar, 0);
|
|
1326 |
MenuElement me[] = new MenuElement[elements.size()];
|
|
1327 |
elements.copyInto(me);
|
|
1328 |
return me;
|
|
1329 |
}
|
|
1330 |
}
|
|
1331 |
}
|
|
1332 |
|
|
1333 |
|
|
1334 |
/**
|
|
1335 |
* See <code>readObject</code> and <code>writeObject</code> in
|
|
1336 |
* <code>JComponent</code> for more
|
|
1337 |
* information about serialization in Swing.
|
|
1338 |
*/
|
|
1339 |
private void writeObject(ObjectOutputStream s) throws IOException {
|
|
1340 |
s.defaultWriteObject();
|
|
1341 |
if (getUIClassID().equals(uiClassID)) {
|
|
1342 |
byte count = JComponent.getWriteObjCounter(this);
|
|
1343 |
JComponent.setWriteObjCounter(this, --count);
|
|
1344 |
if (count == 0 && ui != null) {
|
|
1345 |
ui.installUI(this);
|
|
1346 |
}
|
|
1347 |
}
|
|
1348 |
}
|
|
1349 |
|
|
1350 |
|
|
1351 |
/**
|
|
1352 |
* Returns a string representation of this <code>JMenu</code>. This
|
|
1353 |
* method is intended to be used only for debugging purposes, and the
|
|
1354 |
* content and format of the returned string may vary between
|
|
1355 |
* implementations. The returned string may be empty but may not
|
|
1356 |
* be <code>null</code>.
|
|
1357 |
*
|
|
1358 |
* @return a string representation of this JMenu.
|
|
1359 |
*/
|
|
1360 |
protected String paramString() {
|
|
1361 |
return super.paramString();
|
|
1362 |
}
|
|
1363 |
|
|
1364 |
|
|
1365 |
/////////////////
|
|
1366 |
// Accessibility support
|
|
1367 |
////////////////
|
|
1368 |
|
|
1369 |
/**
|
|
1370 |
* Gets the AccessibleContext associated with this JMenu.
|
|
1371 |
* For JMenus, the AccessibleContext takes the form of an
|
|
1372 |
* AccessibleJMenu.
|
|
1373 |
* A new AccessibleJMenu instance is created if necessary.
|
|
1374 |
*
|
|
1375 |
* @return an AccessibleJMenu that serves as the
|
|
1376 |
* AccessibleContext of this JMenu
|
|
1377 |
*/
|
|
1378 |
public AccessibleContext getAccessibleContext() {
|
|
1379 |
if (accessibleContext == null) {
|
|
1380 |
accessibleContext = new AccessibleJMenu();
|
|
1381 |
}
|
|
1382 |
return accessibleContext;
|
|
1383 |
}
|
|
1384 |
|
|
1385 |
/**
|
|
1386 |
* This class implements accessibility support for the
|
|
1387 |
* <code>JMenu</code> class. It provides an implementation of the
|
|
1388 |
* Java Accessibility API appropriate to menu user-interface elements.
|
|
1389 |
* <p>
|
|
1390 |
* <strong>Warning:</strong>
|
|
1391 |
* Serialized objects of this class will not be compatible with
|
|
1392 |
* future Swing releases. The current serialization support is
|
|
1393 |
* appropriate for short term storage or RMI between applications running
|
|
1394 |
* the same version of Swing. As of 1.4, support for long term storage
|
|
1395 |
* of all JavaBeans<sup><font size="-2">TM</font></sup>
|
|
1396 |
* has been added to the <code>java.beans</code> package.
|
|
1397 |
* Please see {@link java.beans.XMLEncoder}.
|
|
1398 |
*/
|
|
1399 |
protected class AccessibleJMenu extends AccessibleJMenuItem
|
|
1400 |
implements AccessibleSelection {
|
|
1401 |
|
|
1402 |
/**
|
|
1403 |
* Returns the number of accessible children in the object. If all
|
|
1404 |
* of the children of this object implement Accessible, than this
|
|
1405 |
* method should return the number of children of this object.
|
|
1406 |
*
|
|
1407 |
* @return the number of accessible children in the object.
|
|
1408 |
*/
|
|
1409 |
public int getAccessibleChildrenCount() {
|
|
1410 |
Component[] children = getMenuComponents();
|
|
1411 |
int count = 0;
|
|
1412 |
for (int j = 0; j < children.length; j++) {
|
|
1413 |
if (children[j] instanceof Accessible) {
|
|
1414 |
count++;
|
|
1415 |
}
|
|
1416 |
}
|
|
1417 |
return count;
|
|
1418 |
}
|
|
1419 |
|
|
1420 |
/**
|
|
1421 |
* Returns the nth Accessible child of the object.
|
|
1422 |
*
|
|
1423 |
* @param i zero-based index of child
|
|
1424 |
* @return the nth Accessible child of the object
|
|
1425 |
*/
|
|
1426 |
public Accessible getAccessibleChild(int i) {
|
|
1427 |
Component[] children = getMenuComponents();
|
|
1428 |
int count = 0;
|
|
1429 |
for (int j = 0; j < children.length; j++) {
|
|
1430 |
if (children[j] instanceof Accessible) {
|
|
1431 |
if (count == i) {
|
|
1432 |
if (children[j] instanceof JComponent) {
|
|
1433 |
// FIXME: [[[WDW - probably should set this when
|
|
1434 |
// the component is added to the menu. I tried
|
|
1435 |
// to do this in most cases, but the separators
|
|
1436 |
// added by addSeparator are hard to get to.]]]
|
|
1437 |
AccessibleContext ac = ((Accessible) children[j]).getAccessibleContext();
|
|
1438 |
ac.setAccessibleParent(JMenu.this);
|
|
1439 |
}
|
|
1440 |
return (Accessible) children[j];
|
|
1441 |
} else {
|
|
1442 |
count++;
|
|
1443 |
}
|
|
1444 |
}
|
|
1445 |
}
|
|
1446 |
return null;
|
|
1447 |
}
|
|
1448 |
|
|
1449 |
/**
|
|
1450 |
* Get the role of this object.
|
|
1451 |
*
|
|
1452 |
* @return an instance of AccessibleRole describing the role of the
|
|
1453 |
* object
|
|
1454 |
* @see AccessibleRole
|
|
1455 |
*/
|
|
1456 |
public AccessibleRole getAccessibleRole() {
|
|
1457 |
return AccessibleRole.MENU;
|
|
1458 |
}
|
|
1459 |
|
|
1460 |
/**
|
|
1461 |
* Get the AccessibleSelection associated with this object. In the
|
|
1462 |
* implementation of the Java Accessibility API for this class,
|
|
1463 |
* return this object, which is responsible for implementing the
|
|
1464 |
* AccessibleSelection interface on behalf of itself.
|
|
1465 |
*
|
|
1466 |
* @return this object
|
|
1467 |
*/
|
|
1468 |
public AccessibleSelection getAccessibleSelection() {
|
|
1469 |
return this;
|
|
1470 |
}
|
|
1471 |
|
|
1472 |
/**
|
|
1473 |
* Returns 1 if a sub-menu is currently selected in this menu.
|
|
1474 |
*
|
|
1475 |
* @return 1 if a menu is currently selected, else 0
|
|
1476 |
*/
|
|
1477 |
public int getAccessibleSelectionCount() {
|
|
1478 |
MenuElement me[] =
|
|
1479 |
MenuSelectionManager.defaultManager().getSelectedPath();
|
|
1480 |
if (me != null) {
|
|
1481 |
for (int i = 0; i < me.length; i++) {
|
|
1482 |
if (me[i] == JMenu.this) { // this menu is selected
|
|
1483 |
if (i+1 < me.length) {
|
|
1484 |
return 1;
|
|
1485 |
}
|
|
1486 |
}
|
|
1487 |
}
|
|
1488 |
}
|
|
1489 |
return 0;
|
|
1490 |
}
|
|
1491 |
|
|
1492 |
/**
|
|
1493 |
* Returns the currently selected sub-menu if one is selected,
|
|
1494 |
* otherwise null (there can only be one selection, and it can
|
|
1495 |
* only be a sub-menu, as otherwise menu items don't remain
|
|
1496 |
* selected).
|
|
1497 |
*/
|
|
1498 |
public Accessible getAccessibleSelection(int i) {
|
|
1499 |
// if i is a sub-menu & popped, return it
|
|
1500 |
if (i < 0 || i >= getItemCount()) {
|
|
1501 |
return null;
|
|
1502 |
}
|
|
1503 |
MenuElement me[] =
|
|
1504 |
MenuSelectionManager.defaultManager().getSelectedPath();
|
|
1505 |
if (me != null) {
|
|
1506 |
for (int j = 0; j < me.length; j++) {
|
|
1507 |
if (me[j] == JMenu.this) { // this menu is selected
|
|
1508 |
// so find the next JMenuItem in the MenuElement
|
|
1509 |
// array, and return it!
|
|
1510 |
while (++j < me.length) {
|
|
1511 |
if (me[j] instanceof JMenuItem) {
|
|
1512 |
return (Accessible) me[j];
|
|
1513 |
}
|
|
1514 |
}
|
|
1515 |
}
|
|
1516 |
}
|
|
1517 |
}
|
|
1518 |
return null;
|
|
1519 |
}
|
|
1520 |
|
|
1521 |
/**
|
|
1522 |
* Returns true if the current child of this object is selected
|
|
1523 |
* (that is, if this child is a popped-up submenu).
|
|
1524 |
*
|
|
1525 |
* @param i the zero-based index of the child in this Accessible
|
|
1526 |
* object.
|
|
1527 |
* @see AccessibleContext#getAccessibleChild
|
|
1528 |
*/
|
|
1529 |
public boolean isAccessibleChildSelected(int i) {
|
|
1530 |
// if i is a sub-menu and is pop-ed up, return true, else false
|
|
1531 |
MenuElement me[] =
|
|
1532 |
MenuSelectionManager.defaultManager().getSelectedPath();
|
|
1533 |
if (me != null) {
|
|
1534 |
JMenuItem mi = JMenu.this.getItem(i);
|
|
1535 |
for (int j = 0; j < me.length; j++) {
|
|
1536 |
if (me[j] == mi) {
|
|
1537 |
return true;
|
|
1538 |
}
|
|
1539 |
}
|
|
1540 |
}
|
|
1541 |
return false;
|
|
1542 |
}
|
|
1543 |
|
|
1544 |
|
|
1545 |
/**
|
|
1546 |
* Selects the <code>i</code>th menu in the menu.
|
|
1547 |
* If that item is a submenu,
|
|
1548 |
* it will pop up in response. If a different item is already
|
|
1549 |
* popped up, this will force it to close. If this is a sub-menu
|
|
1550 |
* that is already popped up (selected), this method has no
|
|
1551 |
* effect.
|
|
1552 |
*
|
|
1553 |
* @param i the index of the item to be selected
|
|
1554 |
* @see #getAccessibleStateSet
|
|
1555 |
*/
|
|
1556 |
public void addAccessibleSelection(int i) {
|
|
1557 |
if (i < 0 || i >= getItemCount()) {
|
|
1558 |
return;
|
|
1559 |
}
|
|
1560 |
JMenuItem mi = getItem(i);
|
|
1561 |
if (mi != null) {
|
|
1562 |
if (mi instanceof JMenu) {
|
|
1563 |
MenuElement me[] = buildMenuElementArray((JMenu) mi);
|
|
1564 |
MenuSelectionManager.defaultManager().setSelectedPath(me);
|
|
1565 |
} else {
|
|
1566 |
MenuSelectionManager.defaultManager().setSelectedPath(null);
|
|
1567 |
}
|
|
1568 |
}
|
|
1569 |
}
|
|
1570 |
|
|
1571 |
/**
|
|
1572 |
* Removes the nth item from the selection. In general, menus
|
|
1573 |
* can only have one item within them selected at a time
|
|
1574 |
* (e.g. one sub-menu popped open).
|
|
1575 |
*
|
|
1576 |
* @param i the zero-based index of the selected item
|
|
1577 |
*/
|
|
1578 |
public void removeAccessibleSelection(int i) {
|
|
1579 |
if (i < 0 || i >= getItemCount()) {
|
|
1580 |
return;
|
|
1581 |
}
|
|
1582 |
JMenuItem mi = getItem(i);
|
|
1583 |
if (mi != null && mi instanceof JMenu) {
|
|
1584 |
if (((JMenu) mi).isSelected()) {
|
|
1585 |
MenuElement old[] =
|
|
1586 |
MenuSelectionManager.defaultManager().getSelectedPath();
|
|
1587 |
MenuElement me[] = new MenuElement[old.length-2];
|
|
1588 |
for (int j = 0; j < old.length -2; j++) {
|
|
1589 |
me[j] = old[j];
|
|
1590 |
}
|
|
1591 |
MenuSelectionManager.defaultManager().setSelectedPath(me);
|
|
1592 |
}
|
|
1593 |
}
|
|
1594 |
}
|
|
1595 |
|
|
1596 |
/**
|
|
1597 |
* Clears the selection in the object, so that nothing in the
|
|
1598 |
* object is selected. This will close any open sub-menu.
|
|
1599 |
*/
|
|
1600 |
public void clearAccessibleSelection() {
|
|
1601 |
// if this menu is selected, reset selection to only go
|
|
1602 |
// to this menu; else do nothing
|
|
1603 |
MenuElement old[] =
|
|
1604 |
MenuSelectionManager.defaultManager().getSelectedPath();
|
|
1605 |
if (old != null) {
|
|
1606 |
for (int j = 0; j < old.length; j++) {
|
|
1607 |
if (old[j] == JMenu.this) { // menu is in the selection!
|
|
1608 |
MenuElement me[] = new MenuElement[j+1];
|
|
1609 |
System.arraycopy(old, 0, me, 0, j);
|
|
1610 |
me[j] = JMenu.this.getPopupMenu();
|
|
1611 |
MenuSelectionManager.defaultManager().setSelectedPath(me);
|
|
1612 |
}
|
|
1613 |
}
|
|
1614 |
}
|
|
1615 |
}
|
|
1616 |
|
|
1617 |
/**
|
|
1618 |
* Normally causes every selected item in the object to be selected
|
|
1619 |
* if the object supports multiple selections. This method
|
|
1620 |
* makes no sense in a menu bar, and so does nothing.
|
|
1621 |
*/
|
|
1622 |
public void selectAllAccessibleSelection() {
|
|
1623 |
}
|
|
1624 |
} // inner class AccessibleJMenu
|
|
1625 |
|
|
1626 |
}
|