author | ant |
Fri, 31 Jan 2014 18:49:58 +0400 | |
changeset 23280 | df31f522531f |
parent 21592 | da6abe91602a |
child 23010 | 6dadb192ad81 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 1997, 2008, Oracle and/or its affiliates. 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* 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://docs.oracle.com/javase/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://docs.oracle.com/javase/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™ |
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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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@SuppressWarnings("serial") |
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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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/* |
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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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335 |
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336 |
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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350 |
} |
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351 |
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352 |
/** |
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353 |
* Computes the origin for the <code>JMenu</code>'s popup menu. |
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354 |
* 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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359 |
* to adjust the exact location of popup. |
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* |
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361 |
* @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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364 |
* |
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* @since 1.3 |
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366 |
*/ |
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367 |
protected Point getPopupMenuOrigin() { |
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int x; |
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int y; |
2 | 370 |
JPopupMenu pm = getPopupMenu(); |
371 |
// Figure out the sizes needed to caclulate the menu position |
|
372 |
Dimension s = getSize(); |
|
373 |
Dimension pmSize = pm.getSize(); |
|
374 |
// For the first time the menu is popped up, |
|
375 |
// the size has not yet been initiated |
|
376 |
if (pmSize.width==0) { |
|
377 |
pmSize = pm.getPreferredSize(); |
|
378 |
} |
|
379 |
Point position = getLocationOnScreen(); |
|
380 |
Toolkit toolkit = Toolkit.getDefaultToolkit(); |
|
381 |
GraphicsConfiguration gc = getGraphicsConfiguration(); |
|
382 |
Rectangle screenBounds = new Rectangle(toolkit.getScreenSize()); |
|
383 |
GraphicsEnvironment ge = |
|
384 |
GraphicsEnvironment.getLocalGraphicsEnvironment(); |
|
385 |
GraphicsDevice[] gd = ge.getScreenDevices(); |
|
386 |
for(int i = 0; i < gd.length; i++) { |
|
387 |
if(gd[i].getType() == GraphicsDevice.TYPE_RASTER_SCREEN) { |
|
388 |
GraphicsConfiguration dgc = |
|
389 |
gd[i].getDefaultConfiguration(); |
|
390 |
if(dgc.getBounds().contains(position)) { |
|
391 |
gc = dgc; |
|
392 |
break; |
|
393 |
} |
|
394 |
} |
|
395 |
} |
|
396 |
||
397 |
||
398 |
if (gc != null) { |
|
399 |
screenBounds = gc.getBounds(); |
|
400 |
// take screen insets (e.g. taskbar) into account |
|
401 |
Insets screenInsets = toolkit.getScreenInsets(gc); |
|
402 |
||
403 |
screenBounds.width -= |
|
404 |
Math.abs(screenInsets.left + screenInsets.right); |
|
405 |
screenBounds.height -= |
|
406 |
Math.abs(screenInsets.top + screenInsets.bottom); |
|
407 |
position.x -= Math.abs(screenInsets.left); |
|
408 |
position.y -= Math.abs(screenInsets.top); |
|
409 |
} |
|
410 |
||
411 |
Container parent = getParent(); |
|
412 |
if (parent instanceof JPopupMenu) { |
|
413 |
// We are a submenu (pull-right) |
|
414 |
int xOffset = UIManager.getInt("Menu.submenuPopupOffsetX"); |
|
415 |
int yOffset = UIManager.getInt("Menu.submenuPopupOffsetY"); |
|
416 |
||
417 |
if( SwingUtilities.isLeftToRight(this) ) { |
|
418 |
// First determine x: |
|
419 |
x = s.width + xOffset; // Prefer placement to the right |
|
420 |
if (position.x + x + pmSize.width >= screenBounds.width |
|
421 |
+ screenBounds.x && |
|
422 |
// popup doesn't fit - place it wherever there's more room |
|
423 |
screenBounds.width - s.width < 2*(position.x |
|
424 |
- screenBounds.x)) { |
|
425 |
||
426 |
x = 0 - xOffset - pmSize.width; |
|
427 |
} |
|
428 |
} else { |
|
429 |
// First determine x: |
|
430 |
x = 0 - xOffset - pmSize.width; // Prefer placement to the left |
|
431 |
if (position.x + x < screenBounds.x && |
|
432 |
// popup doesn't fit - place it wherever there's more room |
|
433 |
screenBounds.width - s.width > 2*(position.x - |
|
434 |
screenBounds.x)) { |
|
435 |
||
436 |
x = s.width + xOffset; |
|
437 |
} |
|
438 |
} |
|
439 |
// Then the y: |
|
440 |
y = yOffset; // Prefer dropping down |
|
441 |
if (position.y + y + pmSize.height >= screenBounds.height |
|
442 |
+ screenBounds.y && |
|
443 |
// popup doesn't fit - place it wherever there's more room |
|
444 |
screenBounds.height - s.height < 2*(position.y |
|
445 |
- screenBounds.y)) { |
|
446 |
||
447 |
y = s.height - yOffset - pmSize.height; |
|
448 |
} |
|
449 |
} else { |
|
450 |
// We are a toplevel menu (pull-down) |
|
451 |
int xOffset = UIManager.getInt("Menu.menuPopupOffsetX"); |
|
452 |
int yOffset = UIManager.getInt("Menu.menuPopupOffsetY"); |
|
453 |
||
454 |
if( SwingUtilities.isLeftToRight(this) ) { |
|
455 |
// First determine the x: |
|
456 |
x = xOffset; // Extend to the right |
|
457 |
if (position.x + x + pmSize.width >= screenBounds.width |
|
458 |
+ screenBounds.x && |
|
459 |
// popup doesn't fit - place it wherever there's more room |
|
460 |
screenBounds.width - s.width < 2*(position.x |
|
461 |
- screenBounds.x)) { |
|
462 |
||
463 |
x = s.width - xOffset - pmSize.width; |
|
464 |
} |
|
465 |
} else { |
|
466 |
// First determine the x: |
|
467 |
x = s.width - xOffset - pmSize.width; // Extend to the left |
|
468 |
if (position.x + x < screenBounds.x && |
|
469 |
// popup doesn't fit - place it wherever there's more room |
|
470 |
screenBounds.width - s.width > 2*(position.x |
|
471 |
- screenBounds.x)) { |
|
472 |
||
473 |
x = xOffset; |
|
474 |
} |
|
475 |
} |
|
476 |
// Then the y: |
|
477 |
y = s.height + yOffset; // Prefer dropping down |
|
478 |
if (position.y + y + pmSize.height >= screenBounds.height && |
|
479 |
// popup doesn't fit - place it wherever there's more room |
|
480 |
screenBounds.height - s.height < 2*(position.y |
|
481 |
- screenBounds.y)) { |
|
482 |
||
483 |
y = 0 - yOffset - pmSize.height; // Otherwise drop 'up' |
|
484 |
} |
|
485 |
} |
|
486 |
return new Point(x,y); |
|
487 |
} |
|
488 |
||
489 |
||
490 |
/** |
|
491 |
* Returns the suggested delay, in milliseconds, before submenus |
|
492 |
* are popped up or down. |
|
21592 | 493 |
* Each look and feel (L&F) may determine its own policy for |
2 | 494 |
* observing the <code>delay</code> property. |
495 |
* In most cases, the delay is not observed for top level menus |
|
496 |
* or while dragging. The default for <code>delay</code> is 0. |
|
497 |
* This method is a property of the look and feel code and is used |
|
21278 | 498 |
* to manage the idiosyncrasies of the various UI implementations. |
2 | 499 |
* |
500 |
* |
|
501 |
* @return the <code>delay</code> property |
|
502 |
*/ |
|
503 |
public int getDelay() { |
|
504 |
return delay; |
|
505 |
} |
|
506 |
||
507 |
/** |
|
508 |
* Sets the suggested delay before the menu's <code>PopupMenu</code> |
|
21592 | 509 |
* is popped up or down. Each look and feel (L&F) may determine |
2 | 510 |
* it's own policy for observing the delay property. In most cases, |
511 |
* the delay is not observed for top level menus or while dragging. |
|
512 |
* This method is a property of the look and feel code and is used |
|
21278 | 513 |
* to manage the idiosyncrasies of the various UI implementations. |
2 | 514 |
* |
515 |
* @param d the number of milliseconds to delay |
|
516 |
* @exception IllegalArgumentException if <code>d</code> |
|
517 |
* is less than 0 |
|
518 |
* @beaninfo |
|
519 |
* description: The delay between menu selection and making the popup menu visible |
|
520 |
* expert: true |
|
521 |
*/ |
|
522 |
public void setDelay(int d) { |
|
523 |
if (d < 0) |
|
524 |
throw new IllegalArgumentException("Delay must be a positive integer"); |
|
525 |
||
526 |
delay = d; |
|
527 |
} |
|
528 |
||
529 |
/** |
|
530 |
* The window-closing listener for the popup. |
|
531 |
* |
|
532 |
* @see WinListener |
|
533 |
*/ |
|
534 |
protected WinListener popupListener; |
|
535 |
||
536 |
private void ensurePopupMenuCreated() { |
|
537 |
if (popupMenu == null) { |
|
538 |
final JMenu thisMenu = this; |
|
539 |
this.popupMenu = new JPopupMenu(); |
|
540 |
popupMenu.setInvoker(this); |
|
541 |
popupListener = createWinListener(popupMenu); |
|
542 |
} |
|
543 |
} |
|
544 |
||
545 |
/* |
|
546 |
* Return the customized location of the popup component. |
|
547 |
*/ |
|
548 |
private Point getCustomMenuLocation() { |
|
549 |
return customMenuLocation; |
|
550 |
} |
|
551 |
||
552 |
/** |
|
553 |
* Sets the location of the popup component. |
|
554 |
* |
|
555 |
* @param x the x coordinate of the popup's new position |
|
556 |
* @param y the y coordinate of the popup's new position |
|
557 |
*/ |
|
558 |
public void setMenuLocation(int x, int y) { |
|
559 |
customMenuLocation = new Point(x, y); |
|
560 |
if (popupMenu != null) |
|
561 |
popupMenu.setLocation(x, y); |
|
562 |
} |
|
563 |
||
564 |
/** |
|
565 |
* Appends a menu item to the end of this menu. |
|
566 |
* Returns the menu item added. |
|
567 |
* |
|
568 |
* @param menuItem the <code>JMenuitem</code> to be added |
|
569 |
* @return the <code>JMenuItem</code> added |
|
570 |
*/ |
|
571 |
public JMenuItem add(JMenuItem menuItem) { |
|
572 |
ensurePopupMenuCreated(); |
|
573 |
return popupMenu.add(menuItem); |
|
574 |
} |
|
575 |
||
576 |
/** |
|
577 |
* Appends a component to the end of this menu. |
|
578 |
* Returns the component added. |
|
579 |
* |
|
580 |
* @param c the <code>Component</code> to add |
|
581 |
* @return the <code>Component</code> added |
|
582 |
*/ |
|
583 |
public Component add(Component c) { |
|
584 |
ensurePopupMenuCreated(); |
|
585 |
popupMenu.add(c); |
|
586 |
return c; |
|
587 |
} |
|
588 |
||
589 |
/** |
|
590 |
* Adds the specified component to this container at the given |
|
591 |
* position. If <code>index</code> equals -1, the component will |
|
592 |
* be appended to the end. |
|
593 |
* @param c the <code>Component</code> to add |
|
594 |
* @param index the position at which to insert the component |
|
595 |
* @return the <code>Component</code> added |
|
596 |
* @see #remove |
|
597 |
* @see java.awt.Container#add(Component, int) |
|
598 |
*/ |
|
599 |
public Component add(Component c, int index) { |
|
600 |
ensurePopupMenuCreated(); |
|
601 |
popupMenu.add(c, index); |
|
602 |
return c; |
|
603 |
} |
|
604 |
||
605 |
/** |
|
606 |
* Creates a new menu item with the specified text and appends |
|
607 |
* it to the end of this menu. |
|
608 |
* |
|
609 |
* @param s the string for the menu item to be added |
|
610 |
*/ |
|
611 |
public JMenuItem add(String s) { |
|
612 |
return add(new JMenuItem(s)); |
|
613 |
} |
|
614 |
||
615 |
/** |
|
616 |
* Creates a new menu item attached to the specified |
|
617 |
* <code>Action</code> object and appends it to the end of this menu. |
|
618 |
* |
|
619 |
* @param a the <code>Action</code> for the menu item to be added |
|
620 |
* @see Action |
|
621 |
*/ |
|
622 |
public JMenuItem add(Action a) { |
|
623 |
JMenuItem mi = createActionComponent(a); |
|
624 |
mi.setAction(a); |
|
625 |
add(mi); |
|
626 |
return mi; |
|
627 |
} |
|
628 |
||
629 |
/** |
|
630 |
* Factory method which creates the <code>JMenuItem</code> for |
|
631 |
* <code>Action</code>s added to the <code>JMenu</code>. |
|
632 |
* |
|
633 |
* @param a the <code>Action</code> for the menu item to be added |
|
634 |
* @return the new menu item |
|
635 |
* @see Action |
|
636 |
* |
|
637 |
* @since 1.3 |
|
638 |
*/ |
|
639 |
protected JMenuItem createActionComponent(Action a) { |
|
640 |
JMenuItem mi = new JMenuItem() { |
|
641 |
protected PropertyChangeListener createActionPropertyChangeListener(Action a) { |
|
642 |
PropertyChangeListener pcl = createActionChangeListener(this); |
|
643 |
if (pcl == null) { |
|
644 |
pcl = super.createActionPropertyChangeListener(a); |
|
645 |
} |
|
646 |
return pcl; |
|
647 |
} |
|
648 |
}; |
|
649 |
mi.setHorizontalTextPosition(JButton.TRAILING); |
|
650 |
mi.setVerticalTextPosition(JButton.CENTER); |
|
651 |
return mi; |
|
652 |
} |
|
653 |
||
654 |
/** |
|
655 |
* Returns a properly configured <code>PropertyChangeListener</code> |
|
656 |
* which updates the control as changes to the <code>Action</code> occur. |
|
657 |
*/ |
|
658 |
protected PropertyChangeListener createActionChangeListener(JMenuItem b) { |
|
659 |
return b.createActionPropertyChangeListener0(b.getAction()); |
|
660 |
} |
|
661 |
||
662 |
/** |
|
663 |
* Appends a new separator to the end of the menu. |
|
664 |
*/ |
|
665 |
public void addSeparator() |
|
666 |
{ |
|
667 |
ensurePopupMenuCreated(); |
|
668 |
popupMenu.addSeparator(); |
|
669 |
} |
|
670 |
||
671 |
/** |
|
672 |
* Inserts a new menu item with the specified text at a |
|
673 |
* given position. |
|
674 |
* |
|
675 |
* @param s the text for the menu item to add |
|
676 |
* @param pos an integer specifying the position at which to add the |
|
677 |
* new menu item |
|
678 |
* @exception IllegalArgumentException when the value of |
|
21592 | 679 |
* <code>pos</code> < 0 |
2 | 680 |
*/ |
681 |
public void insert(String s, int pos) { |
|
682 |
if (pos < 0) { |
|
683 |
throw new IllegalArgumentException("index less than zero."); |
|
684 |
} |
|
685 |
||
686 |
ensurePopupMenuCreated(); |
|
687 |
popupMenu.insert(new JMenuItem(s), pos); |
|
688 |
} |
|
689 |
||
690 |
/** |
|
691 |
* Inserts the specified <code>JMenuitem</code> at a given position. |
|
692 |
* |
|
693 |
* @param mi the <code>JMenuitem</code> to add |
|
694 |
* @param pos an integer specifying the position at which to add the |
|
695 |
* new <code>JMenuitem</code> |
|
696 |
* @return the new menu item |
|
697 |
* @exception IllegalArgumentException if the value of |
|
21592 | 698 |
* <code>pos</code> < 0 |
2 | 699 |
*/ |
700 |
public JMenuItem insert(JMenuItem mi, int pos) { |
|
701 |
if (pos < 0) { |
|
702 |
throw new IllegalArgumentException("index less than zero."); |
|
703 |
} |
|
704 |
ensurePopupMenuCreated(); |
|
705 |
popupMenu.insert(mi, pos); |
|
706 |
return mi; |
|
707 |
} |
|
708 |
||
709 |
/** |
|
710 |
* Inserts a new menu item attached to the specified <code>Action</code> |
|
711 |
* object at a given position. |
|
712 |
* |
|
713 |
* @param a the <code>Action</code> object for the menu item to add |
|
714 |
* @param pos an integer specifying the position at which to add the |
|
715 |
* new menu item |
|
716 |
* @exception IllegalArgumentException if the value of |
|
21592 | 717 |
* <code>pos</code> < 0 |
2 | 718 |
*/ |
719 |
public JMenuItem insert(Action a, int pos) { |
|
720 |
if (pos < 0) { |
|
721 |
throw new IllegalArgumentException("index less than zero."); |
|
722 |
} |
|
723 |
||
724 |
ensurePopupMenuCreated(); |
|
725 |
JMenuItem mi = new JMenuItem(a); |
|
726 |
mi.setHorizontalTextPosition(JButton.TRAILING); |
|
727 |
mi.setVerticalTextPosition(JButton.CENTER); |
|
728 |
popupMenu.insert(mi, pos); |
|
729 |
return mi; |
|
730 |
} |
|
731 |
||
732 |
/** |
|
733 |
* Inserts a separator at the specified position. |
|
734 |
* |
|
735 |
* @param index an integer specifying the position at which to |
|
736 |
* insert the menu separator |
|
737 |
* @exception IllegalArgumentException if the value of |
|
21592 | 738 |
* <code>index</code> < 0 |
2 | 739 |
*/ |
740 |
public void insertSeparator(int index) { |
|
741 |
if (index < 0) { |
|
742 |
throw new IllegalArgumentException("index less than zero."); |
|
743 |
} |
|
744 |
||
745 |
ensurePopupMenuCreated(); |
|
746 |
popupMenu.insert( new JPopupMenu.Separator(), index ); |
|
747 |
} |
|
748 |
||
749 |
/** |
|
750 |
* Returns the <code>JMenuItem</code> at the specified position. |
|
751 |
* If the component at <code>pos</code> is not a menu item, |
|
752 |
* <code>null</code> is returned. |
|
753 |
* This method is included for AWT compatibility. |
|
754 |
* |
|
755 |
* @param pos an integer specifying the position |
|
756 |
* @exception IllegalArgumentException if the value of |
|
21592 | 757 |
* <code>pos</code> < 0 |
2 | 758 |
* @return the menu item at the specified position; or <code>null</code> |
759 |
* if the item as the specified position is not a menu item |
|
760 |
*/ |
|
761 |
public JMenuItem getItem(int pos) { |
|
762 |
if (pos < 0) { |
|
763 |
throw new IllegalArgumentException("index less than zero."); |
|
764 |
} |
|
765 |
||
766 |
Component c = getMenuComponent(pos); |
|
767 |
if (c instanceof JMenuItem) { |
|
768 |
JMenuItem mi = (JMenuItem) c; |
|
769 |
return mi; |
|
770 |
} |
|
771 |
||
772 |
// 4173633 |
|
773 |
return null; |
|
774 |
} |
|
775 |
||
776 |
/** |
|
777 |
* Returns the number of items on the menu, including separators. |
|
778 |
* This method is included for AWT compatibility. |
|
779 |
* |
|
780 |
* @return an integer equal to the number of items on the menu |
|
781 |
* @see #getMenuComponentCount |
|
782 |
*/ |
|
783 |
public int getItemCount() { |
|
784 |
return getMenuComponentCount(); |
|
785 |
} |
|
786 |
||
787 |
/** |
|
788 |
* Returns true if the menu can be torn off. This method is not |
|
789 |
* yet implemented. |
|
790 |
* |
|
791 |
* @return true if the menu can be torn off, else false |
|
792 |
* @exception Error if invoked -- this method is not yet implemented |
|
793 |
*/ |
|
794 |
public boolean isTearOff() { |
|
795 |
throw new Error("boolean isTearOff() {} not yet implemented"); |
|
796 |
} |
|
797 |
||
798 |
/** |
|
799 |
* Removes the specified menu item from this menu. If there is no |
|
800 |
* popup menu, this method will have no effect. |
|
801 |
* |
|
802 |
* @param item the <code>JMenuItem</code> to be removed from the menu |
|
803 |
*/ |
|
804 |
public void remove(JMenuItem item) { |
|
805 |
if (popupMenu != null) |
|
806 |
popupMenu.remove(item); |
|
807 |
} |
|
808 |
||
809 |
/** |
|
810 |
* Removes the menu item at the specified index from this menu. |
|
811 |
* |
|
812 |
* @param pos the position of the item to be removed |
|
813 |
* @exception IllegalArgumentException if the value of |
|
21592 | 814 |
* <code>pos</code> < 0, or if <code>pos</code> |
2 | 815 |
* is greater than the number of menu items |
816 |
*/ |
|
817 |
public void remove(int pos) { |
|
818 |
if (pos < 0) { |
|
819 |
throw new IllegalArgumentException("index less than zero."); |
|
820 |
} |
|
821 |
if (pos > getItemCount()) { |
|
822 |
throw new IllegalArgumentException("index greater than the number of items."); |
|
823 |
} |
|
824 |
if (popupMenu != null) |
|
825 |
popupMenu.remove(pos); |
|
826 |
} |
|
827 |
||
828 |
/** |
|
829 |
* Removes the component <code>c</code> from this menu. |
|
830 |
* |
|
831 |
* @param c the component to be removed |
|
832 |
*/ |
|
833 |
public void remove(Component c) { |
|
834 |
if (popupMenu != null) |
|
835 |
popupMenu.remove(c); |
|
836 |
} |
|
837 |
||
838 |
/** |
|
839 |
* Removes all menu items from this menu. |
|
840 |
*/ |
|
841 |
public void removeAll() { |
|
842 |
if (popupMenu != null) |
|
843 |
popupMenu.removeAll(); |
|
844 |
} |
|
845 |
||
846 |
/** |
|
847 |
* Returns the number of components on the menu. |
|
848 |
* |
|
849 |
* @return an integer containing the number of components on the menu |
|
850 |
*/ |
|
851 |
public int getMenuComponentCount() { |
|
852 |
int componentCount = 0; |
|
853 |
if (popupMenu != null) |
|
854 |
componentCount = popupMenu.getComponentCount(); |
|
855 |
return componentCount; |
|
856 |
} |
|
857 |
||
858 |
/** |
|
859 |
* Returns the component at position <code>n</code>. |
|
860 |
* |
|
861 |
* @param n the position of the component to be returned |
|
862 |
* @return the component requested, or <code>null</code> |
|
863 |
* if there is no popup menu |
|
864 |
* |
|
865 |
*/ |
|
866 |
public Component getMenuComponent(int n) { |
|
867 |
if (popupMenu != null) |
|
868 |
return popupMenu.getComponent(n); |
|
869 |
||
870 |
return null; |
|
871 |
} |
|
872 |
||
873 |
/** |
|
874 |
* Returns an array of <code>Component</code>s of the menu's |
|
875 |
* subcomponents. Note that this returns all <code>Component</code>s |
|
876 |
* in the popup menu, including separators. |
|
877 |
* |
|
878 |
* @return an array of <code>Component</code>s or an empty array |
|
879 |
* if there is no popup menu |
|
880 |
*/ |
|
881 |
public Component[] getMenuComponents() { |
|
882 |
if (popupMenu != null) |
|
883 |
return popupMenu.getComponents(); |
|
884 |
||
885 |
return new Component[0]; |
|
886 |
} |
|
887 |
||
888 |
/** |
|
889 |
* Returns true if the menu is a 'top-level menu', that is, if it is |
|
890 |
* the direct child of a menubar. |
|
891 |
* |
|
892 |
* @return true if the menu is activated from the menu bar; |
|
893 |
* false if the menu is activated from a menu item |
|
894 |
* on another menu |
|
895 |
*/ |
|
896 |
public boolean isTopLevelMenu() { |
|
1301
15e81207e1f2
6727662: Code improvement and warnings removing from swing packages
rupashka
parents:
2
diff
changeset
|
897 |
return getParent() instanceof JMenuBar; |
2 | 898 |
|
899 |
} |
|
900 |
||
901 |
/** |
|
902 |
* Returns true if the specified component exists in the |
|
903 |
* submenu hierarchy. |
|
904 |
* |
|
905 |
* @param c the <code>Component</code> to be tested |
|
906 |
* @return true if the <code>Component</code> exists, false otherwise |
|
907 |
*/ |
|
908 |
public boolean isMenuComponent(Component c) { |
|
909 |
// Are we in the MenuItem part of the menu |
|
910 |
if (c == this) |
|
911 |
return true; |
|
912 |
// Are we in the PopupMenu? |
|
913 |
if (c instanceof JPopupMenu) { |
|
914 |
JPopupMenu comp = (JPopupMenu) c; |
|
915 |
if (comp == this.getPopupMenu()) |
|
916 |
return true; |
|
917 |
} |
|
918 |
// Are we in a Component on the PopupMenu |
|
919 |
int ncomponents = this.getMenuComponentCount(); |
|
920 |
Component[] component = this.getMenuComponents(); |
|
921 |
for (int i = 0 ; i < ncomponents ; i++) { |
|
922 |
Component comp = component[i]; |
|
923 |
// Are we in the current component? |
|
924 |
if (comp == c) |
|
925 |
return true; |
|
926 |
// Hmmm, what about Non-menu containers? |
|
927 |
||
928 |
// Recursive call for the Menu case |
|
929 |
if (comp instanceof JMenu) { |
|
930 |
JMenu subMenu = (JMenu) comp; |
|
931 |
if (subMenu.isMenuComponent(c)) |
|
932 |
return true; |
|
933 |
} |
|
934 |
} |
|
935 |
return false; |
|
936 |
} |
|
937 |
||
938 |
||
939 |
/* |
|
940 |
* Returns a point in the coordinate space of this menu's popupmenu |
|
941 |
* which corresponds to the point <code>p</code> in the menu's |
|
942 |
* coordinate space. |
|
943 |
* |
|
944 |
* @param p the point to be translated |
|
945 |
* @return the point in the coordinate space of this menu's popupmenu |
|
946 |
*/ |
|
947 |
private Point translateToPopupMenu(Point p) { |
|
948 |
return translateToPopupMenu(p.x, p.y); |
|
949 |
} |
|
950 |
||
951 |
/* |
|
952 |
* Returns a point in the coordinate space of this menu's popupmenu |
|
953 |
* which corresponds to the point (x,y) in the menu's coordinate space. |
|
954 |
* |
|
955 |
* @param x the x coordinate of the point to be translated |
|
956 |
* @param y the y coordinate of the point to be translated |
|
957 |
* @return the point in the coordinate space of this menu's popupmenu |
|
958 |
*/ |
|
959 |
private Point translateToPopupMenu(int x, int y) { |
|
960 |
int newX; |
|
961 |
int newY; |
|
962 |
||
963 |
if (getParent() instanceof JPopupMenu) { |
|
964 |
newX = x - getSize().width; |
|
965 |
newY = y; |
|
966 |
} else { |
|
967 |
newX = x; |
|
968 |
newY = y - getSize().height; |
|
969 |
} |
|
970 |
||
971 |
return new Point(newX, newY); |
|
972 |
} |
|
973 |
||
974 |
/** |
|
975 |
* Returns the popupmenu associated with this menu. If there is |
|
976 |
* no popupmenu, it will create one. |
|
977 |
*/ |
|
978 |
public JPopupMenu getPopupMenu() { |
|
979 |
ensurePopupMenuCreated(); |
|
980 |
return popupMenu; |
|
981 |
} |
|
982 |
||
983 |
/** |
|
984 |
* Adds a listener for menu events. |
|
985 |
* |
|
986 |
* @param l the listener to be added |
|
987 |
*/ |
|
988 |
public void addMenuListener(MenuListener l) { |
|
989 |
listenerList.add(MenuListener.class, l); |
|
990 |
} |
|
991 |
||
992 |
/** |
|
993 |
* Removes a listener for menu events. |
|
994 |
* |
|
995 |
* @param l the listener to be removed |
|
996 |
*/ |
|
997 |
public void removeMenuListener(MenuListener l) { |
|
998 |
listenerList.remove(MenuListener.class, l); |
|
999 |
} |
|
1000 |
||
1001 |
/** |
|
1002 |
* Returns an array of all the <code>MenuListener</code>s added |
|
1003 |
* to this JMenu with addMenuListener(). |
|
1004 |
* |
|
1005 |
* @return all of the <code>MenuListener</code>s added or an empty |
|
1006 |
* array if no listeners have been added |
|
1007 |
* @since 1.4 |
|
1008 |
*/ |
|
1009 |
public MenuListener[] getMenuListeners() { |
|
1301
15e81207e1f2
6727662: Code improvement and warnings removing from swing packages
rupashka
parents:
2
diff
changeset
|
1010 |
return listenerList.getListeners(MenuListener.class); |
2 | 1011 |
} |
1012 |
||
1013 |
/** |
|
1014 |
* Notifies all listeners that have registered interest for |
|
1015 |
* notification on this event type. The event instance |
|
1016 |
* is created lazily. |
|
1017 |
* |
|
1018 |
* @exception Error if there is a <code>null</code> listener |
|
1019 |
* @see EventListenerList |
|
1020 |
*/ |
|
1021 |
protected void fireMenuSelected() { |
|
1022 |
if (DEBUG) { |
|
1023 |
System.out.println("In JMenu.fireMenuSelected"); |
|
1024 |
} |
|
1025 |
// Guaranteed to return a non-null array |
|
1026 |
Object[] listeners = listenerList.getListenerList(); |
|
1027 |
// Process the listeners last to first, notifying |
|
1028 |
// those that are interested in this event |
|
1029 |
for (int i = listeners.length-2; i>=0; i-=2) { |
|
1030 |
if (listeners[i]==MenuListener.class) { |
|
1031 |
if (listeners[i+1]== null) { |
|
1032 |
throw new Error(getText() +" has a NULL Listener!! " + i); |
|
1033 |
} else { |
|
1034 |
// Lazily create the event: |
|
1035 |
if (menuEvent == null) |
|
1036 |
menuEvent = new MenuEvent(this); |
|
1037 |
((MenuListener)listeners[i+1]).menuSelected(menuEvent); |
|
1038 |
} |
|
1039 |
} |
|
1040 |
} |
|
1041 |
} |
|
1042 |
||
1043 |
/** |
|
1044 |
* Notifies all listeners that have registered interest for |
|
1045 |
* notification on this event type. The event instance |
|
1046 |
* is created lazily. |
|
1047 |
* |
|
1048 |
* @exception Error if there is a <code>null</code> listener |
|
1049 |
* @see EventListenerList |
|
1050 |
*/ |
|
1051 |
protected void fireMenuDeselected() { |
|
1052 |
if (DEBUG) { |
|
1053 |
System.out.println("In JMenu.fireMenuDeselected"); |
|
1054 |
} |
|
1055 |
// Guaranteed to return a non-null array |
|
1056 |
Object[] listeners = listenerList.getListenerList(); |
|
1057 |
// Process the listeners last to first, notifying |
|
1058 |
// those that are interested in this event |
|
1059 |
for (int i = listeners.length-2; i>=0; i-=2) { |
|
1060 |
if (listeners[i]==MenuListener.class) { |
|
1061 |
if (listeners[i+1]== null) { |
|
1062 |
throw new Error(getText() +" has a NULL Listener!! " + i); |
|
1063 |
} else { |
|
1064 |
// Lazily create the event: |
|
1065 |
if (menuEvent == null) |
|
1066 |
menuEvent = new MenuEvent(this); |
|
1067 |
((MenuListener)listeners[i+1]).menuDeselected(menuEvent); |
|
1068 |
} |
|
1069 |
} |
|
1070 |
} |
|
1071 |
} |
|
1072 |
||
1073 |
/** |
|
1074 |
* Notifies all listeners that have registered interest for |
|
1075 |
* notification on this event type. The event instance |
|
1076 |
* is created lazily. |
|
1077 |
* |
|
1078 |
* @exception Error if there is a <code>null</code> listener |
|
1079 |
* @see EventListenerList |
|
1080 |
*/ |
|
1081 |
protected void fireMenuCanceled() { |
|
1082 |
if (DEBUG) { |
|
1083 |
System.out.println("In JMenu.fireMenuCanceled"); |
|
1084 |
} |
|
1085 |
// Guaranteed to return a non-null array |
|
1086 |
Object[] listeners = listenerList.getListenerList(); |
|
1087 |
// Process the listeners last to first, notifying |
|
1088 |
// those that are interested in this event |
|
1089 |
for (int i = listeners.length-2; i>=0; i-=2) { |
|
1090 |
if (listeners[i]==MenuListener.class) { |
|
1091 |
if (listeners[i+1]== null) { |
|
1092 |
throw new Error(getText() +" has a NULL Listener!! " |
|
1093 |
+ i); |
|
1094 |
} else { |
|
1095 |
// Lazily create the event: |
|
1096 |
if (menuEvent == null) |
|
1097 |
menuEvent = new MenuEvent(this); |
|
1098 |
((MenuListener)listeners[i+1]).menuCanceled(menuEvent); |
|
1099 |
} |
|
1100 |
} |
|
1101 |
} |
|
1102 |
} |
|
1103 |
||
1104 |
// Overriden to do nothing, JMenu doesn't support an accelerator |
|
1105 |
void configureAcceleratorFromAction(Action a) { |
|
1106 |
} |
|
1107 |
||
11268 | 1108 |
@SuppressWarnings("serial") |
2 | 1109 |
class MenuChangeListener implements ChangeListener, Serializable { |
1110 |
boolean isSelected = false; |
|
1111 |
public void stateChanged(ChangeEvent e) { |
|
1112 |
ButtonModel model = (ButtonModel) e.getSource(); |
|
1113 |
boolean modelSelected = model.isSelected(); |
|
1114 |
||
1115 |
if (modelSelected != isSelected) { |
|
1116 |
if (modelSelected == true) { |
|
1117 |
fireMenuSelected(); |
|
1118 |
} else { |
|
1119 |
fireMenuDeselected(); |
|
1120 |
} |
|
1121 |
isSelected = modelSelected; |
|
1122 |
} |
|
1123 |
} |
|
1124 |
} |
|
1125 |
||
1126 |
private ChangeListener createMenuChangeListener() { |
|
1127 |
return new MenuChangeListener(); |
|
1128 |
} |
|
1129 |
||
1130 |
||
1131 |
/** |
|
1132 |
* Creates a window-closing listener for the popup. |
|
1133 |
* |
|
1134 |
* @param p the <code>JPopupMenu</code> |
|
1135 |
* @return the new window-closing listener |
|
1136 |
* |
|
1137 |
* @see WinListener |
|
1138 |
*/ |
|
1139 |
protected WinListener createWinListener(JPopupMenu p) { |
|
1140 |
return new WinListener(p); |
|
1141 |
} |
|
1142 |
||
1143 |
/** |
|
1144 |
* A listener class that watches for a popup window closing. |
|
1145 |
* When the popup is closing, the listener deselects the menu. |
|
1146 |
* <p> |
|
1147 |
* <strong>Warning:</strong> |
|
1148 |
* Serialized objects of this class will not be compatible with |
|
1149 |
* future Swing releases. The current serialization support is |
|
1150 |
* appropriate for short term storage or RMI between applications running |
|
1151 |
* the same version of Swing. As of 1.4, support for long term storage |
|
20458 | 1152 |
* of all JavaBeans™ |
2 | 1153 |
* has been added to the <code>java.beans</code> package. |
1154 |
* Please see {@link java.beans.XMLEncoder}. |
|
1155 |
*/ |
|
11268 | 1156 |
@SuppressWarnings("serial") |
2 | 1157 |
protected class WinListener extends WindowAdapter implements Serializable { |
1158 |
JPopupMenu popupMenu; |
|
1159 |
/** |
|
1160 |
* Create the window listener for the specified popup. |
|
1161 |
* @since 1.4 |
|
1162 |
*/ |
|
1163 |
public WinListener(JPopupMenu p) { |
|
1164 |
this.popupMenu = p; |
|
1165 |
} |
|
1166 |
/** |
|
1167 |
* Deselect the menu when the popup is closed from outside. |
|
1168 |
*/ |
|
1169 |
public void windowClosing(WindowEvent e) { |
|
1170 |
setSelected(false); |
|
1171 |
} |
|
1172 |
} |
|
1173 |
||
1174 |
/** |
|
1175 |
* Messaged when the menubar selection changes to activate or |
|
1176 |
* deactivate this menu. |
|
1177 |
* Overrides <code>JMenuItem.menuSelectionChanged</code>. |
|
1178 |
* |
|
1179 |
* @param isIncluded true if this menu is active, false if |
|
1180 |
* it is not |
|
1181 |
*/ |
|
1182 |
public void menuSelectionChanged(boolean isIncluded) { |
|
1183 |
if (DEBUG) { |
|
1184 |
System.out.println("In JMenu.menuSelectionChanged to " + isIncluded); |
|
1185 |
} |
|
1186 |
setSelected(isIncluded); |
|
1187 |
} |
|
1188 |
||
1189 |
/** |
|
1190 |
* Returns an array of <code>MenuElement</code>s containing the submenu |
|
1191 |
* for this menu component. If popup menu is <code>null</code> returns |
|
1192 |
* an empty array. This method is required to conform to the |
|
1193 |
* <code>MenuElement</code> interface. Note that since |
|
1194 |
* <code>JSeparator</code>s do not conform to the <code>MenuElement</code> |
|
1195 |
* interface, this array will only contain <code>JMenuItem</code>s. |
|
1196 |
* |
|
1197 |
* @return an array of <code>MenuElement</code> objects |
|
1198 |
*/ |
|
1199 |
public MenuElement[] getSubElements() { |
|
1200 |
if(popupMenu == null) |
|
1201 |
return new MenuElement[0]; |
|
1202 |
else { |
|
1203 |
MenuElement result[] = new MenuElement[1]; |
|
1204 |
result[0] = popupMenu; |
|
1205 |
return result; |
|
1206 |
} |
|
1207 |
} |
|
1208 |
||
1209 |
||
1210 |
// implements javax.swing.MenuElement |
|
1211 |
/** |
|
1212 |
* Returns the <code>java.awt.Component</code> used to |
|
1213 |
* paint this <code>MenuElement</code>. |
|
1214 |
* The returned component is used to convert events and detect if |
|
1215 |
* an event is inside a menu component. |
|
1216 |
*/ |
|
1217 |
public Component getComponent() { |
|
1218 |
return this; |
|
1219 |
} |
|
1220 |
||
1221 |
||
1222 |
/** |
|
1223 |
* Sets the <code>ComponentOrientation</code> property of this menu |
|
1224 |
* and all components contained within it. This includes all |
|
1225 |
* components returned by {@link #getMenuComponents getMenuComponents}. |
|
1226 |
* |
|
1227 |
* @param o the new component orientation of this menu and |
|
1228 |
* the components contained within it. |
|
1229 |
* @exception NullPointerException if <code>orientation</code> is null. |
|
1230 |
* @see java.awt.Component#setComponentOrientation |
|
1231 |
* @see java.awt.Component#getComponentOrientation |
|
1232 |
* @since 1.4 |
|
1233 |
*/ |
|
1234 |
public void applyComponentOrientation(ComponentOrientation o) { |
|
1235 |
super.applyComponentOrientation(o); |
|
1236 |
||
1237 |
if ( popupMenu != null ) { |
|
1238 |
int ncomponents = getMenuComponentCount(); |
|
1239 |
for (int i = 0 ; i < ncomponents ; ++i) { |
|
1240 |
getMenuComponent(i).applyComponentOrientation(o); |
|
1241 |
} |
|
1242 |
popupMenu.setComponentOrientation(o); |
|
1243 |
} |
|
1244 |
} |
|
1245 |
||
1246 |
public void setComponentOrientation(ComponentOrientation o) { |
|
1247 |
super.setComponentOrientation(o); |
|
1248 |
if ( popupMenu != null ) { |
|
1249 |
popupMenu.setComponentOrientation(o); |
|
1250 |
} |
|
1251 |
} |
|
1252 |
||
1253 |
/** |
|
1254 |
* <code>setAccelerator</code> is not defined for <code>JMenu</code>. |
|
1255 |
* Use <code>setMnemonic</code> instead. |
|
1256 |
* @param keyStroke the keystroke combination which will invoke |
|
1257 |
* the <code>JMenuItem</code>'s actionlisteners |
|
1258 |
* without navigating the menu hierarchy |
|
1259 |
* @exception Error if invoked -- this method is not defined for JMenu. |
|
1260 |
* Use <code>setMnemonic</code> instead |
|
1261 |
* |
|
1262 |
* @beaninfo |
|
1263 |
* description: The keystroke combination which will invoke the JMenuItem's |
|
1264 |
* actionlisteners without navigating the menu hierarchy |
|
1265 |
* hidden: true |
|
1266 |
*/ |
|
1267 |
public void setAccelerator(KeyStroke keyStroke) { |
|
1268 |
throw new Error("setAccelerator() is not defined for JMenu. Use setMnemonic() instead."); |
|
1269 |
} |
|
1270 |
||
1271 |
/** |
|
1272 |
* Processes key stroke events such as mnemonics and accelerators. |
|
1273 |
* |
|
1274 |
* @param evt the key event to be processed |
|
1275 |
*/ |
|
1276 |
protected void processKeyEvent(KeyEvent evt) { |
|
1277 |
MenuSelectionManager.defaultManager().processKeyEvent(evt); |
|
1278 |
if (evt.isConsumed()) |
|
1279 |
return; |
|
1280 |
||
1281 |
super.processKeyEvent(evt); |
|
1282 |
} |
|
1283 |
||
1284 |
/** |
|
1285 |
* Programmatically performs a "click". This overrides the method |
|
1286 |
* <code>AbstractButton.doClick</code> in order to make the menu pop up. |
|
1287 |
* @param pressTime indicates the number of milliseconds the |
|
1288 |
* button was pressed for |
|
1289 |
*/ |
|
1290 |
public void doClick(int pressTime) { |
|
1291 |
MenuElement me[] = buildMenuElementArray(this); |
|
1292 |
MenuSelectionManager.defaultManager().setSelectedPath(me); |
|
1293 |
} |
|
1294 |
||
1295 |
/* |
|
1296 |
* Build an array of menu elements - from <code>PopupMenu</code> to |
|
1297 |
* the root <code>JMenuBar</code>. |
|
1298 |
* @param leaf the leaf node from which to start building up the array |
|
1299 |
* @return the array of menu items |
|
1300 |
*/ |
|
1301 |
private MenuElement[] buildMenuElementArray(JMenu leaf) { |
|
1301
15e81207e1f2
6727662: Code improvement and warnings removing from swing packages
rupashka
parents:
2
diff
changeset
|
1302 |
Vector<MenuElement> elements = new Vector<MenuElement>(); |
2 | 1303 |
Component current = leaf.getPopupMenu(); |
1304 |
JPopupMenu pop; |
|
1305 |
JMenu menu; |
|
1306 |
JMenuBar bar; |
|
1307 |
||
1308 |
while (true) { |
|
1309 |
if (current instanceof JPopupMenu) { |
|
1310 |
pop = (JPopupMenu) current; |
|
1311 |
elements.insertElementAt(pop, 0); |
|
1312 |
current = pop.getInvoker(); |
|
1313 |
} else if (current instanceof JMenu) { |
|
1314 |
menu = (JMenu) current; |
|
1315 |
elements.insertElementAt(menu, 0); |
|
1316 |
current = menu.getParent(); |
|
1317 |
} else if (current instanceof JMenuBar) { |
|
1318 |
bar = (JMenuBar) current; |
|
1319 |
elements.insertElementAt(bar, 0); |
|
1320 |
MenuElement me[] = new MenuElement[elements.size()]; |
|
1321 |
elements.copyInto(me); |
|
1322 |
return me; |
|
1323 |
} |
|
1324 |
} |
|
1325 |
} |
|
1326 |
||
1327 |
||
1328 |
/** |
|
1329 |
* See <code>readObject</code> and <code>writeObject</code> in |
|
1330 |
* <code>JComponent</code> for more |
|
1331 |
* information about serialization in Swing. |
|
1332 |
*/ |
|
1333 |
private void writeObject(ObjectOutputStream s) throws IOException { |
|
1334 |
s.defaultWriteObject(); |
|
1335 |
if (getUIClassID().equals(uiClassID)) { |
|
1336 |
byte count = JComponent.getWriteObjCounter(this); |
|
1337 |
JComponent.setWriteObjCounter(this, --count); |
|
1338 |
if (count == 0 && ui != null) { |
|
1339 |
ui.installUI(this); |
|
1340 |
} |
|
1341 |
} |
|
1342 |
} |
|
1343 |
||
1344 |
||
1345 |
/** |
|
1346 |
* Returns a string representation of this <code>JMenu</code>. This |
|
1347 |
* method is intended to be used only for debugging purposes, and the |
|
1348 |
* content and format of the returned string may vary between |
|
1349 |
* implementations. The returned string may be empty but may not |
|
1350 |
* be <code>null</code>. |
|
1351 |
* |
|
1352 |
* @return a string representation of this JMenu. |
|
1353 |
*/ |
|
1354 |
protected String paramString() { |
|
1355 |
return super.paramString(); |
|
1356 |
} |
|
1357 |
||
1358 |
||
1359 |
///////////////// |
|
1360 |
// Accessibility support |
|
1361 |
//////////////// |
|
1362 |
||
1363 |
/** |
|
1364 |
* Gets the AccessibleContext associated with this JMenu. |
|
1365 |
* For JMenus, the AccessibleContext takes the form of an |
|
1366 |
* AccessibleJMenu. |
|
1367 |
* A new AccessibleJMenu instance is created if necessary. |
|
1368 |
* |
|
1369 |
* @return an AccessibleJMenu that serves as the |
|
1370 |
* AccessibleContext of this JMenu |
|
1371 |
*/ |
|
1372 |
public AccessibleContext getAccessibleContext() { |
|
1373 |
if (accessibleContext == null) { |
|
1374 |
accessibleContext = new AccessibleJMenu(); |
|
1375 |
} |
|
1376 |
return accessibleContext; |
|
1377 |
} |
|
1378 |
||
1379 |
/** |
|
1380 |
* This class implements accessibility support for the |
|
1381 |
* <code>JMenu</code> class. It provides an implementation of the |
|
1382 |
* Java Accessibility API appropriate to menu user-interface elements. |
|
1383 |
* <p> |
|
1384 |
* <strong>Warning:</strong> |
|
1385 |
* Serialized objects of this class will not be compatible with |
|
1386 |
* future Swing releases. The current serialization support is |
|
1387 |
* appropriate for short term storage or RMI between applications running |
|
1388 |
* the same version of Swing. As of 1.4, support for long term storage |
|
20458 | 1389 |
* of all JavaBeans™ |
2 | 1390 |
* has been added to the <code>java.beans</code> package. |
1391 |
* Please see {@link java.beans.XMLEncoder}. |
|
1392 |
*/ |
|
11268 | 1393 |
@SuppressWarnings("serial") |
2 | 1394 |
protected class AccessibleJMenu extends AccessibleJMenuItem |
1395 |
implements AccessibleSelection { |
|
1396 |
||
1397 |
/** |
|
1398 |
* Returns the number of accessible children in the object. If all |
|
1399 |
* of the children of this object implement Accessible, than this |
|
1400 |
* method should return the number of children of this object. |
|
1401 |
* |
|
1402 |
* @return the number of accessible children in the object. |
|
1403 |
*/ |
|
1404 |
public int getAccessibleChildrenCount() { |
|
1405 |
Component[] children = getMenuComponents(); |
|
1406 |
int count = 0; |
|
1301
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|
1407 |
for (Component child : children) { |
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|
1408 |
if (child instanceof Accessible) { |
2 | 1409 |
count++; |
1410 |
} |
|
1411 |
} |
|
1412 |
return count; |
|
1413 |
} |
|
1414 |
||
1415 |
/** |
|
1416 |
* Returns the nth Accessible child of the object. |
|
1417 |
* |
|
1418 |
* @param i zero-based index of child |
|
1419 |
* @return the nth Accessible child of the object |
|
1420 |
*/ |
|
1421 |
public Accessible getAccessibleChild(int i) { |
|
1422 |
Component[] children = getMenuComponents(); |
|
1423 |
int count = 0; |
|
1301
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|
1424 |
for (Component child : children) { |
15e81207e1f2
6727662: Code improvement and warnings removing from swing packages
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diff
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|
1425 |
if (child instanceof Accessible) { |
2 | 1426 |
if (count == i) { |
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|
1427 |
if (child instanceof JComponent) { |
2 | 1428 |
// FIXME: [[[WDW - probably should set this when |
1429 |
// the component is added to the menu. I tried |
|
1430 |
// to do this in most cases, but the separators |
|
1431 |
// added by addSeparator are hard to get to.]]] |
|
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|
1432 |
AccessibleContext ac = child.getAccessibleContext(); |
2 | 1433 |
ac.setAccessibleParent(JMenu.this); |
1434 |
} |
|
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|
1435 |
return (Accessible) child; |
2 | 1436 |
} else { |
1437 |
count++; |
|
1438 |
} |
|
1439 |
} |
|
1440 |
} |
|
1441 |
return null; |
|
1442 |
} |
|
1443 |
||
1444 |
/** |
|
1445 |
* Get the role of this object. |
|
1446 |
* |
|
1447 |
* @return an instance of AccessibleRole describing the role of the |
|
1448 |
* object |
|
1449 |
* @see AccessibleRole |
|
1450 |
*/ |
|
1451 |
public AccessibleRole getAccessibleRole() { |
|
1452 |
return AccessibleRole.MENU; |
|
1453 |
} |
|
1454 |
||
1455 |
/** |
|
1456 |
* Get the AccessibleSelection associated with this object. In the |
|
1457 |
* implementation of the Java Accessibility API for this class, |
|
1458 |
* return this object, which is responsible for implementing the |
|
1459 |
* AccessibleSelection interface on behalf of itself. |
|
1460 |
* |
|
1461 |
* @return this object |
|
1462 |
*/ |
|
1463 |
public AccessibleSelection getAccessibleSelection() { |
|
1464 |
return this; |
|
1465 |
} |
|
1466 |
||
1467 |
/** |
|
1468 |
* Returns 1 if a sub-menu is currently selected in this menu. |
|
1469 |
* |
|
1470 |
* @return 1 if a menu is currently selected, else 0 |
|
1471 |
*/ |
|
1472 |
public int getAccessibleSelectionCount() { |
|
1473 |
MenuElement me[] = |
|
1474 |
MenuSelectionManager.defaultManager().getSelectedPath(); |
|
1475 |
if (me != null) { |
|
1476 |
for (int i = 0; i < me.length; i++) { |
|
1477 |
if (me[i] == JMenu.this) { // this menu is selected |
|
1478 |
if (i+1 < me.length) { |
|
1479 |
return 1; |
|
1480 |
} |
|
1481 |
} |
|
1482 |
} |
|
1483 |
} |
|
1484 |
return 0; |
|
1485 |
} |
|
1486 |
||
1487 |
/** |
|
1488 |
* Returns the currently selected sub-menu if one is selected, |
|
1489 |
* otherwise null (there can only be one selection, and it can |
|
1490 |
* only be a sub-menu, as otherwise menu items don't remain |
|
1491 |
* selected). |
|
1492 |
*/ |
|
1493 |
public Accessible getAccessibleSelection(int i) { |
|
1494 |
// if i is a sub-menu & popped, return it |
|
1495 |
if (i < 0 || i >= getItemCount()) { |
|
1496 |
return null; |
|
1497 |
} |
|
1498 |
MenuElement me[] = |
|
1499 |
MenuSelectionManager.defaultManager().getSelectedPath(); |
|
1500 |
if (me != null) { |
|
1501 |
for (int j = 0; j < me.length; j++) { |
|
1502 |
if (me[j] == JMenu.this) { // this menu is selected |
|
1503 |
// so find the next JMenuItem in the MenuElement |
|
1504 |
// array, and return it! |
|
1505 |
while (++j < me.length) { |
|
1506 |
if (me[j] instanceof JMenuItem) { |
|
1507 |
return (Accessible) me[j]; |
|
1508 |
} |
|
1509 |
} |
|
1510 |
} |
|
1511 |
} |
|
1512 |
} |
|
1513 |
return null; |
|
1514 |
} |
|
1515 |
||
1516 |
/** |
|
1517 |
* Returns true if the current child of this object is selected |
|
1518 |
* (that is, if this child is a popped-up submenu). |
|
1519 |
* |
|
1520 |
* @param i the zero-based index of the child in this Accessible |
|
1521 |
* object. |
|
1522 |
* @see AccessibleContext#getAccessibleChild |
|
1523 |
*/ |
|
1524 |
public boolean isAccessibleChildSelected(int i) { |
|
1525 |
// if i is a sub-menu and is pop-ed up, return true, else false |
|
1526 |
MenuElement me[] = |
|
1527 |
MenuSelectionManager.defaultManager().getSelectedPath(); |
|
1528 |
if (me != null) { |
|
1529 |
JMenuItem mi = JMenu.this.getItem(i); |
|
1530 |
for (int j = 0; j < me.length; j++) { |
|
1531 |
if (me[j] == mi) { |
|
1532 |
return true; |
|
1533 |
} |
|
1534 |
} |
|
1535 |
} |
|
1536 |
return false; |
|
1537 |
} |
|
1538 |
||
1539 |
||
1540 |
/** |
|
1541 |
* Selects the <code>i</code>th menu in the menu. |
|
1542 |
* If that item is a submenu, |
|
1543 |
* it will pop up in response. If a different item is already |
|
1544 |
* popped up, this will force it to close. If this is a sub-menu |
|
1545 |
* that is already popped up (selected), this method has no |
|
1546 |
* effect. |
|
1547 |
* |
|
1548 |
* @param i the index of the item to be selected |
|
1549 |
* @see #getAccessibleStateSet |
|
1550 |
*/ |
|
1551 |
public void addAccessibleSelection(int i) { |
|
1552 |
if (i < 0 || i >= getItemCount()) { |
|
1553 |
return; |
|
1554 |
} |
|
1555 |
JMenuItem mi = getItem(i); |
|
1556 |
if (mi != null) { |
|
1557 |
if (mi instanceof JMenu) { |
|
1558 |
MenuElement me[] = buildMenuElementArray((JMenu) mi); |
|
1559 |
MenuSelectionManager.defaultManager().setSelectedPath(me); |
|
1560 |
} else { |
|
1561 |
MenuSelectionManager.defaultManager().setSelectedPath(null); |
|
1562 |
} |
|
1563 |
} |
|
1564 |
} |
|
1565 |
||
1566 |
/** |
|
1567 |
* Removes the nth item from the selection. In general, menus |
|
1568 |
* can only have one item within them selected at a time |
|
1569 |
* (e.g. one sub-menu popped open). |
|
1570 |
* |
|
1571 |
* @param i the zero-based index of the selected item |
|
1572 |
*/ |
|
1573 |
public void removeAccessibleSelection(int i) { |
|
1574 |
if (i < 0 || i >= getItemCount()) { |
|
1575 |
return; |
|
1576 |
} |
|
1577 |
JMenuItem mi = getItem(i); |
|
1578 |
if (mi != null && mi instanceof JMenu) { |
|
1301
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parents:
2
diff
changeset
|
1579 |
if (mi.isSelected()) { |
2 | 1580 |
MenuElement old[] = |
1581 |
MenuSelectionManager.defaultManager().getSelectedPath(); |
|
1582 |
MenuElement me[] = new MenuElement[old.length-2]; |
|
1583 |
for (int j = 0; j < old.length -2; j++) { |
|
1584 |
me[j] = old[j]; |
|
1585 |
} |
|
1586 |
MenuSelectionManager.defaultManager().setSelectedPath(me); |
|
1587 |
} |
|
1588 |
} |
|
1589 |
} |
|
1590 |
||
1591 |
/** |
|
1592 |
* Clears the selection in the object, so that nothing in the |
|
1593 |
* object is selected. This will close any open sub-menu. |
|
1594 |
*/ |
|
1595 |
public void clearAccessibleSelection() { |
|
1596 |
// if this menu is selected, reset selection to only go |
|
1597 |
// to this menu; else do nothing |
|
1598 |
MenuElement old[] = |
|
1599 |
MenuSelectionManager.defaultManager().getSelectedPath(); |
|
1600 |
if (old != null) { |
|
1601 |
for (int j = 0; j < old.length; j++) { |
|
1602 |
if (old[j] == JMenu.this) { // menu is in the selection! |
|
1603 |
MenuElement me[] = new MenuElement[j+1]; |
|
1604 |
System.arraycopy(old, 0, me, 0, j); |
|
1605 |
me[j] = JMenu.this.getPopupMenu(); |
|
1606 |
MenuSelectionManager.defaultManager().setSelectedPath(me); |
|
1607 |
} |
|
1608 |
} |
|
1609 |
} |
|
1610 |
} |
|
1611 |
||
1612 |
/** |
|
1613 |
* Normally causes every selected item in the object to be selected |
|
1614 |
* if the object supports multiple selections. This method |
|
1615 |
* makes no sense in a menu bar, and so does nothing. |
|
1616 |
*/ |
|
1617 |
public void selectAllAccessibleSelection() { |
|
1618 |
} |
|
1619 |
} // inner class AccessibleJMenu |
|
1620 |
||
1621 |
} |