mirror of git://gcc.gnu.org/git/gcc.git
1291 lines
36 KiB
Java
1291 lines
36 KiB
Java
/* JMenu.java --
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Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing;
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import java.awt.Component;
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import java.awt.Dimension;
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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.Rectangle;
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import java.awt.Toolkit;
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import java.awt.event.KeyEvent;
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import java.awt.event.WindowAdapter;
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import java.awt.event.WindowEvent;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.EventListener;
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import javax.accessibility.Accessible;
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import javax.accessibility.AccessibleContext;
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import javax.accessibility.AccessibleRole;
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import javax.accessibility.AccessibleSelection;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import javax.swing.event.MenuEvent;
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import javax.swing.event.MenuListener;
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import javax.swing.plaf.MenuItemUI;
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/**
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* This class represents a menu that can be added to a menu bar or
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* can be a submenu in some other menu. When JMenu is selected it
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* displays JPopupMenu containing its menu items.
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*
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* <p>
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* JMenu's fires MenuEvents when this menu's selection changes. If this menu
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* is selected, then fireMenuSelectedEvent() is invoked. In case when menu is
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* deselected or cancelled, then fireMenuDeselectedEvent() or
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* fireMenuCancelledEvent() is invoked, respectivelly.
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* </p>
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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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* Receives notifications when the JMenu's ButtonModel is changed and
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* fires menuSelected or menuDeselected events when appropriate.
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*/
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private class MenuChangeListener
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implements ChangeListener
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{
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/**
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* Indicates the last selected state.
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*/
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private boolean selected;
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/**
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* Receives notification when the JMenu's ButtonModel changes.
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*/
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public void stateChanged(ChangeEvent ev)
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{
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ButtonModel m = (ButtonModel) ev.getSource();
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boolean s = m.isSelected();
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if (s != selected)
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{
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if (s)
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fireMenuSelected();
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else
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fireMenuDeselected();
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selected = s;
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}
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}
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}
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private static final long serialVersionUID = 4227225638931828014L;
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/** A Popup menu associated with this menu, which pops up when menu is selected */
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private JPopupMenu popupMenu = null;
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/** Whenever menu is selected or deselected the MenuEvent is fired to
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menu's registered listeners. */
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private MenuEvent menuEvent = new MenuEvent(this);
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/*Amount of time, in milliseconds, that should pass before popupMenu
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associated with this menu appears or disappers */
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private int delay;
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/* PopupListener */
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protected WinListener popupListener;
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/**
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* Location at which popup menu associated with this menu will be
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* displayed
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*/
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private Point menuLocation;
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/**
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* The ChangeListener for the ButtonModel.
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*
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* @see MenuChangeListener
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*/
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private ChangeListener menuChangeListener;
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/**
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* Creates a new JMenu object.
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*/
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public JMenu()
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{
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super();
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setOpaque(false);
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}
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/**
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* Creates a new <code>JMenu</code> with the specified label.
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*
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* @param text label for this menu
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*/
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public JMenu(String text)
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{
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super(text);
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popupMenu = new JPopupMenu();
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popupMenu.setInvoker(this);
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setOpaque(false);
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}
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/**
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* Creates a new <code>JMenu</code> object.
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*
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* @param action Action that is used to create menu item tha will be
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* added to the menu.
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*/
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public JMenu(Action action)
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{
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super(action);
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createActionChangeListener(this);
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popupMenu = new JPopupMenu();
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popupMenu.setInvoker(this);
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setOpaque(false);
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}
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/**
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* Creates a new <code>JMenu</code> with specified label and an option
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* for this menu to be tear-off menu.
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*
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* @param text label for this menu
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* @param tearoff true if this menu should be tear-off and false otherwise
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*/
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public JMenu(String text, boolean tearoff)
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{
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// FIXME: tearoff not implemented
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this(text);
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}
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/**
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* Adds specified menu item to this menu
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*
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* @param item Menu item to add to this menu
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*
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* @return Menu item that was added
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*/
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public JMenuItem add(JMenuItem item)
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{
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return getPopupMenu().add(item);
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}
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/**
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* Adds specified component to this menu.
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*
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* @param component Component to add to this menu
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*
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* @return Component that was added
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*/
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public Component add(Component component)
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{
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getPopupMenu().insert(component, -1);
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return component;
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}
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/**
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* Adds specified component to this menu at the given index
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*
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* @param component Component to add
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* @param index Position of this menu item in the menu
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*
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* @return Component that was added
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*/
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public Component add(Component component, int index)
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{
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return getPopupMenu().add(component, index);
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}
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/**
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* Adds JMenuItem constructed with the specified label to this menu
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*
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* @param text label for the menu item that will be added
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*
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* @return Menu Item that was added to this menu
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*/
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public JMenuItem add(String text)
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{
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return add(new JMenuItem(text));
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}
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/**
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* Adds JMenuItem constructed using properties from specified action.
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*
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* @param action action to construct the menu item with
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*
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* @return Menu Item that was added to this menu
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*/
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public JMenuItem add(Action action)
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{
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JMenuItem i = createActionComponent(action);
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i.setAction(action);
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add(i);
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return i;
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}
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/**
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* Removes given menu item from this menu. Nothing happens if
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* this menu doesn't contain specified menu item.
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*
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* @param item Menu Item which needs to be removed
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*/
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public void remove(JMenuItem item)
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{
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getPopupMenu().remove(item);
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}
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/**
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* Removes component at the specified index from this menu
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*
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* @param index Position of the component that needs to be removed in the menu
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*/
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public void remove(int index)
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{
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if (index < 0 || (index > 0 && getMenuComponentCount() == 0))
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throw new IllegalArgumentException();
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if (getMenuComponentCount() > 0)
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popupMenu.remove(index);
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}
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/**
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* Removes given component from this menu.
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*
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* @param component Component to remove
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*/
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public void remove(Component component)
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{
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int index = getPopupMenu().getComponentIndex(component);
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if (index >= 0)
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getPopupMenu().remove(index);
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}
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/**
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* Removes all menu items from the menu
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*/
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public void removeAll()
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{
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if (popupMenu != null)
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popupMenu.removeAll();
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}
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/**
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* Creates JMenuItem with the specified text and inserts it in the
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* at the specified index
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*
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* @param text label for the new menu item
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* @param index index at which to insert newly created menu item.
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*/
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public void insert(String text, int index)
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{
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this.insert(new JMenuItem(text), index);
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}
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/**
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* Creates JMenuItem with the specified text and inserts it in the
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* at the specified index. IllegalArgumentException is thrown
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* if index is less than 0
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*
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* @param item menu item to insert
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* @param index index at which to insert menu item.
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* @return Menu item that was added to the menu
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*/
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public JMenuItem insert(JMenuItem item, int index)
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{
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if (index < 0)
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throw new IllegalArgumentException("index less than zero");
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getPopupMenu().insert(item, index);
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return item;
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}
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/**
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* Creates JMenuItem with the associated action and inserts it to the menu
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* at the specified index. IllegalArgumentException is thrown
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* if index is less than 0
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*
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* @param action Action for the new menu item
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* @param index index at which to insert newly created menu item.
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* @return Menu item that was added to the menu
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*/
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public JMenuItem insert(Action action, int index)
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{
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JMenuItem item = new JMenuItem(action);
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this.insert(item, index);
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return item;
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}
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/**
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* This method sets this menuItem's UI to the UIManager's default for the
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* current look and feel.
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*/
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public void updateUI()
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{
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setUI((MenuItemUI) UIManager.getUI(this));
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}
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/**
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* This method returns a name to identify which look and feel class will be
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* the UI delegate for the menu.
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*
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* @return The Look and Feel classID. "MenuUI"
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*/
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public String getUIClassID()
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{
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return "MenuUI";
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}
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/**
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* Sets model for this menu.
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*
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* @param model model to set
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*/
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public void setModel(ButtonModel model)
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{
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ButtonModel oldModel = getModel();
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if (oldModel != null && menuChangeListener != null)
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oldModel.removeChangeListener(menuChangeListener);
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super.setModel(model);
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if (model != null)
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{
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if (menuChangeListener == null)
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menuChangeListener = new MenuChangeListener();
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model.addChangeListener(menuChangeListener);
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}
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}
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/**
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* Returns true if the menu is selected and false otherwise
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*
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* @return true if the menu is selected and false otherwise
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*/
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public boolean isSelected()
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{
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return super.isSelected();
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}
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/**
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* Changes this menu selected state if selected is true and false otherwise
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* This method fires menuEvents to menu's registered listeners.
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*
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* @param selected true if the menu should be selected and false otherwise
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*/
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public void setSelected(boolean selected)
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{
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ButtonModel m = getModel();
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if (selected != m.isSelected())
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m.setSelected(selected);
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}
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/**
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* Checks if PopupMenu associated with this menu is visible
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*
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* @return true if the popup associated with this menu is currently visible
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* on the screen and false otherwise.
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*/
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public boolean isPopupMenuVisible()
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{
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return getPopupMenu().isVisible();
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}
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/**
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* Sets popup menu visibility
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*
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* @param popup true if popup should be visible and false otherwise
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*/
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public void setPopupMenuVisible(boolean popup)
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{
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if (popup != isPopupMenuVisible() && (isEnabled() || ! popup))
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{
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if (popup && isShowing())
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{
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// Set location as determined by getPopupLocation().
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Point loc = menuLocation == null ? getPopupMenuOrigin()
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: menuLocation;
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getPopupMenu().show(this, loc.x, loc.y);
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}
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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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* Returns origin point of the popup menu. This takes the screen bounds
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* into account and places the popup where it fits best.
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*
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* @return the origin of the popup menu
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*/
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protected Point getPopupMenuOrigin()
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{
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// The menu's screen location and size.
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Point screenLoc = getLocationOnScreen();
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Dimension size = getSize();
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// Determine the popup's size.
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JPopupMenu popup = getPopupMenu();
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Dimension popupSize = popup.getSize();
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if (popupSize.width == 0 || popupSize.height == 0)
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popupSize = popup.getPreferredSize();
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// Determine screen bounds.
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Toolkit tk = Toolkit.getDefaultToolkit();
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Rectangle screenBounds = new Rectangle(tk.getScreenSize());
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GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
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GraphicsDevice gd = ge.getDefaultScreenDevice();
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GraphicsConfiguration gc = gd.getDefaultConfiguration();
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Insets screenInsets = tk.getScreenInsets(gc);
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screenBounds.x -= screenInsets.left;
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screenBounds.width -= screenInsets.left + screenInsets.right;
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screenBounds.y -= screenInsets.top;
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screenBounds.height -= screenInsets.top + screenInsets.bottom;
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screenLoc.x -= screenInsets.left;
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screenLoc.y -= screenInsets.top;
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Point point = new Point();
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if (isTopLevelMenu())
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{
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// If menu in the menu bar.
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int xOffset = UIManager.getInt("Menu.menuPopupOffsetX");
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int yOffset = UIManager.getInt("Menu.menuPopupOffsetY");
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// Determine X location.
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if (getComponentOrientation().isLeftToRight())
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{
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// Prefer popup to the right.
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point.x = xOffset;
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// Check if it fits, otherwise place popup wherever it fits.
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if (screenLoc.x + point.x + popupSize.width
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> screenBounds.width + screenBounds.width
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&& screenBounds.width - size.width
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< 2 * (screenLoc.x - screenBounds.x))
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// Popup to the right if there's not enough room.
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point.x = size.width - xOffset - popupSize.width;
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}
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else
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{
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// Prefer popup to the left.
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point.x = size.width - xOffset - popupSize.width;
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if (screenLoc.x + point.x < screenBounds.x
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&& screenBounds.width - size.width
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> 2 * (screenLoc.x - screenBounds.x))
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// Popup to the left if there's not enough room.
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point.x = xOffset;
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}
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// Determine Y location. Prefer popping down.
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point.y = size.height + yOffset;
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if (screenLoc.y + point.y + popupSize.height >= screenBounds.height
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&& screenBounds.height - size.height
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< 2 * (screenLoc.y - screenBounds.y))
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// Position above if there's not enough room below.
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point.y = - yOffset - popupSize.height;
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}
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else
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{
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// If submenu.
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int xOffset = UIManager.getInt("Menu.submenuPopupOffsetX");
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int yOffset = UIManager.getInt("Menu.submenuPopupOffsetY");
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// Determine X location.
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if (getComponentOrientation().isLeftToRight())
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{
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// Prefer popup to the right.
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point.x = size.width + xOffset;
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if (screenLoc.x + point.x + popupSize.width
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>= screenBounds.x + screenBounds.width
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&& screenBounds.width - size.width
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< 2 * (screenLoc.x - screenBounds.x))
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// Position to the left if there's not enough room on the right.
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point.x = - xOffset - popupSize.width;
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}
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else
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{
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// Prefer popup on the left side.
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point.x = - xOffset - popupSize.width;
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if (screenLoc.x + point.x < screenBounds.x
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&& screenBounds.width - size.width
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> 2 * (screenLoc.x - screenBounds.x))
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// Popup to the right if there's not enough room.
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point.x = size.width + xOffset;
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}
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// Determine Y location. Prefer popping down.
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point.y = yOffset;
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if (screenLoc.y + point.y + popupSize.height
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>= screenBounds.y + screenBounds.height
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&& screenBounds.height - size.height
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< 2 * (screenLoc.y - screenBounds.y))
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// Pop up if there's not enough room below.
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point.y = size.height - yOffset - popupSize.height;
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}
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return point;
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}
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/**
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* Returns delay property.
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*
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* @return delay property, indicating number of milliseconds before
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* popup menu associated with the menu appears or disappears after
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* menu was selected or deselected respectively
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*/
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public int getDelay()
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{
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return delay;
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}
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/**
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* Sets delay property for this menu. If given time for the delay
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* property is negative, then IllegalArgumentException is thrown
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*
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* @param delay number of milliseconds before
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* popup menu associated with the menu appears or disappears after
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* menu was selected or deselected respectively
|
|
*/
|
|
public void setDelay(int delay)
|
|
{
|
|
if (delay < 0)
|
|
throw new IllegalArgumentException("delay less than 0");
|
|
this.delay = delay;
|
|
}
|
|
|
|
/**
|
|
* Sets location at which popup menu should be displayed
|
|
* The location given is relative to this menu item
|
|
*
|
|
* @param x x-coordinate of the menu location
|
|
* @param y y-coordinate of the menu location
|
|
*/
|
|
public void setMenuLocation(int x, int y)
|
|
{
|
|
menuLocation = new Point(x, y);
|
|
if (popupMenu != null)
|
|
popupMenu.setLocation(x, y);
|
|
}
|
|
|
|
/**
|
|
* Creates and returns JMenuItem associated with the given action
|
|
*
|
|
* @param action Action to use for creation of JMenuItem
|
|
*
|
|
* @return JMenuItem that was creted with given action
|
|
*/
|
|
protected JMenuItem createActionComponent(Action action)
|
|
{
|
|
return new JMenuItem(action);
|
|
}
|
|
|
|
/**
|
|
* Creates ActionChangeListener to listen for PropertyChangeEvents occuring
|
|
* in the action that is associated with this menu
|
|
*
|
|
* @param item menu that contains action to listen to
|
|
*
|
|
* @return The PropertyChangeListener
|
|
*/
|
|
protected PropertyChangeListener createActionChangeListener(JMenuItem item)
|
|
{
|
|
return new ActionChangedListener(item);
|
|
}
|
|
|
|
/**
|
|
* Adds separator to the end of the menu items in the menu.
|
|
*/
|
|
public void addSeparator()
|
|
{
|
|
getPopupMenu().addSeparator();
|
|
}
|
|
|
|
/**
|
|
* Inserts separator in the menu at the specified index.
|
|
*
|
|
* @param index Index at which separator should be inserted
|
|
*/
|
|
public void insertSeparator(int index)
|
|
{
|
|
if (index < 0)
|
|
throw new IllegalArgumentException("index less than 0");
|
|
|
|
getPopupMenu().insert(new JPopupMenu.Separator(), index);
|
|
}
|
|
|
|
/**
|
|
* Returns menu item located at the specified index in the menu
|
|
*
|
|
* @param index Index at which to look for the menu item
|
|
*
|
|
* @return menu item located at the specified index in the menu
|
|
*/
|
|
public JMenuItem getItem(int index)
|
|
{
|
|
if (index < 0)
|
|
throw new IllegalArgumentException("index less than 0");
|
|
|
|
if (getItemCount() == 0)
|
|
return null;
|
|
|
|
Component c = popupMenu.getComponentAtIndex(index);
|
|
|
|
if (c instanceof JMenuItem)
|
|
return (JMenuItem) c;
|
|
else
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns number of items in the menu including separators.
|
|
*
|
|
* @return number of items in the menu
|
|
*
|
|
* @see #getMenuComponentCount()
|
|
*/
|
|
public int getItemCount()
|
|
{
|
|
return getMenuComponentCount();
|
|
}
|
|
|
|
/**
|
|
* Checks if this menu is a tear-off menu.
|
|
*
|
|
* @return true if this menu is a tear-off menu and false otherwise
|
|
*/
|
|
public boolean isTearOff()
|
|
{
|
|
// NOT YET IMPLEMENTED
|
|
throw new Error("The method isTearOff() has not yet been implemented.");
|
|
}
|
|
|
|
/**
|
|
* Returns number of menu components in this menu
|
|
*
|
|
* @return number of menu components in this menu
|
|
*/
|
|
public int getMenuComponentCount()
|
|
{
|
|
return getPopupMenu().getComponentCount();
|
|
}
|
|
|
|
/**
|
|
* Returns menu component located at the givent index
|
|
* in the menu
|
|
*
|
|
* @param index index at which to get the menu component in the menu
|
|
*
|
|
* @return Menu Component located in the menu at the specified index
|
|
*/
|
|
public Component getMenuComponent(int index)
|
|
{
|
|
if (getPopupMenu() == null || getMenuComponentCount() == 0)
|
|
return null;
|
|
|
|
return popupMenu.getComponentAtIndex(index);
|
|
}
|
|
|
|
/**
|
|
* Return components belonging to this menu
|
|
*
|
|
* @return components belonging to this menu
|
|
*/
|
|
public Component[] getMenuComponents()
|
|
{
|
|
return getPopupMenu().getComponents();
|
|
}
|
|
|
|
/**
|
|
* Checks if this menu is a top level menu. The menu is top
|
|
* level menu if it is inside the menu bar. While if the menu
|
|
* inside some other menu, it is considered to be a pull-right menu.
|
|
*
|
|
* @return true if this menu is top level menu, and false otherwise
|
|
*/
|
|
public boolean isTopLevelMenu()
|
|
{
|
|
return getParent() instanceof JMenuBar;
|
|
}
|
|
|
|
/**
|
|
* Checks if given component exists in this menu. The submenus of
|
|
* this menu are checked as well
|
|
*
|
|
* @param component Component to look for
|
|
*
|
|
* @return true if the given component exists in this menu, and false otherwise
|
|
*/
|
|
public boolean isMenuComponent(Component component)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns popup menu associated with the menu.
|
|
*
|
|
* @return popup menu associated with the menu.
|
|
*/
|
|
public JPopupMenu getPopupMenu()
|
|
{
|
|
if (popupMenu == null)
|
|
{
|
|
popupMenu = new JPopupMenu();
|
|
popupMenu.setInvoker(this);
|
|
}
|
|
return popupMenu;
|
|
}
|
|
|
|
/**
|
|
* Adds MenuListener to the menu
|
|
*
|
|
* @param listener MenuListener to add
|
|
*/
|
|
public void addMenuListener(MenuListener listener)
|
|
{
|
|
listenerList.add(MenuListener.class, listener);
|
|
}
|
|
|
|
/**
|
|
* Removes MenuListener from the menu
|
|
*
|
|
* @param listener MenuListener to remove
|
|
*/
|
|
public void removeMenuListener(MenuListener listener)
|
|
{
|
|
listenerList.remove(MenuListener.class, listener);
|
|
}
|
|
|
|
/**
|
|
* Returns all registered <code>MenuListener</code> objects.
|
|
*
|
|
* @return an array of listeners
|
|
*
|
|
* @since 1.4
|
|
*/
|
|
public MenuListener[] getMenuListeners()
|
|
{
|
|
return (MenuListener[]) listenerList.getListeners(MenuListener.class);
|
|
}
|
|
|
|
/**
|
|
* This method fires MenuEvents to all menu's MenuListeners. In this case
|
|
* menuSelected() method of MenuListeners is called to indicated that the menu
|
|
* was selected.
|
|
*/
|
|
protected void fireMenuSelected()
|
|
{
|
|
MenuListener[] listeners = getMenuListeners();
|
|
|
|
for (int index = 0; index < listeners.length; ++index)
|
|
listeners[index].menuSelected(menuEvent);
|
|
}
|
|
|
|
/**
|
|
* This method fires MenuEvents to all menu's MenuListeners. In this case
|
|
* menuDeselected() method of MenuListeners is called to indicated that the menu
|
|
* was deselected.
|
|
*/
|
|
protected void fireMenuDeselected()
|
|
{
|
|
EventListener[] ll = listenerList.getListeners(MenuListener.class);
|
|
|
|
for (int i = 0; i < ll.length; i++)
|
|
((MenuListener) ll[i]).menuDeselected(menuEvent);
|
|
}
|
|
|
|
/**
|
|
* This method fires MenuEvents to all menu's MenuListeners. In this case
|
|
* menuSelected() method of MenuListeners is called to indicated that the menu
|
|
* was cancelled. The menu is cancelled when it's popup menu is close without selection.
|
|
*/
|
|
protected void fireMenuCanceled()
|
|
{
|
|
EventListener[] ll = listenerList.getListeners(MenuListener.class);
|
|
|
|
for (int i = 0; i < ll.length; i++)
|
|
((MenuListener) ll[i]).menuCanceled(menuEvent);
|
|
}
|
|
|
|
/**
|
|
* Creates WinListener that listens to the menu;s popup menu.
|
|
*
|
|
* @param popup JPopupMenu to listen to
|
|
*
|
|
* @return The WinListener
|
|
*/
|
|
protected WinListener createWinListener(JPopupMenu popup)
|
|
{
|
|
return new WinListener(popup);
|
|
}
|
|
|
|
/**
|
|
* Method of the MenuElementInterface. It reacts to the selection
|
|
* changes in the menu. If this menu was selected, then it
|
|
* displayes popup menu associated with it and if this menu was
|
|
* deselected it hides the popup menu.
|
|
*
|
|
* @param changed true if the menu was selected and false otherwise
|
|
*/
|
|
public void menuSelectionChanged(boolean changed)
|
|
{
|
|
// if this menu selection is true, then activate this menu and
|
|
// display popup associated with this menu
|
|
setSelected(changed);
|
|
}
|
|
|
|
/**
|
|
* Method of MenuElement interface. Returns sub components of
|
|
* this menu.
|
|
*
|
|
* @return array containing popupMenu that is associated with this menu
|
|
*/
|
|
public MenuElement[] getSubElements()
|
|
{
|
|
return new MenuElement[] { popupMenu };
|
|
}
|
|
|
|
/**
|
|
* @return Returns reference to itself
|
|
*/
|
|
public Component getComponent()
|
|
{
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* This method is overriden with empty implementation, s.t the
|
|
* accelerator couldn't be set for the menu. The mnemonic should
|
|
* be used for the menu instead.
|
|
*
|
|
* @param keystroke accelerator for this menu
|
|
*/
|
|
public void setAccelerator(KeyStroke keystroke)
|
|
{
|
|
throw new Error("setAccelerator() is not defined for JMenu. Use setMnemonic() instead.");
|
|
}
|
|
|
|
/**
|
|
* This method process KeyEvent occuring when the menu is visible
|
|
*
|
|
* @param event The KeyEvent
|
|
*/
|
|
protected void processKeyEvent(KeyEvent event)
|
|
{
|
|
MenuSelectionManager.defaultManager().processKeyEvent(event);
|
|
}
|
|
|
|
/**
|
|
* Programatically performs click
|
|
*
|
|
* @param time Number of milliseconds for which this menu stays pressed
|
|
*/
|
|
public void doClick(int time)
|
|
{
|
|
getModel().setArmed(true);
|
|
getModel().setPressed(true);
|
|
try
|
|
{
|
|
java.lang.Thread.sleep(time);
|
|
}
|
|
catch (java.lang.InterruptedException e)
|
|
{
|
|
// probably harmless
|
|
}
|
|
|
|
getModel().setPressed(false);
|
|
getModel().setArmed(false);
|
|
popupMenu.show(this, this.getWidth(), 0);
|
|
}
|
|
|
|
/**
|
|
* A string that describes this JMenu. Normally only used
|
|
* for debugging.
|
|
*
|
|
* @return A string describing this JMenu
|
|
*/
|
|
protected String paramString()
|
|
{
|
|
return super.paramString();
|
|
}
|
|
|
|
public AccessibleContext getAccessibleContext()
|
|
{
|
|
if (accessibleContext == null)
|
|
accessibleContext = new AccessibleJMenu();
|
|
|
|
return accessibleContext;
|
|
}
|
|
|
|
/**
|
|
* Implements support for assisitive technologies for <code>JMenu</code>.
|
|
*/
|
|
protected class AccessibleJMenu extends AccessibleJMenuItem
|
|
implements AccessibleSelection
|
|
{
|
|
private static final long serialVersionUID = -8131864021059524309L;
|
|
|
|
protected AccessibleJMenu()
|
|
{
|
|
// Nothing to do here.
|
|
}
|
|
|
|
/**
|
|
* Returns the number of accessible children of this object.
|
|
*
|
|
* @return the number of accessible children of this object
|
|
*/
|
|
public int getAccessibleChildrenCount()
|
|
{
|
|
Component[] children = getMenuComponents();
|
|
int count = 0;
|
|
for (int i = 0; i < children.length; i++)
|
|
{
|
|
if (children[i] instanceof Accessible)
|
|
count++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* Returns the accessible child with the specified <code>index</code>.
|
|
*
|
|
* @param index the index of the child to fetch
|
|
*
|
|
* @return the accessible child with the specified <code>index</code>
|
|
*/
|
|
public Accessible getAccessibleChild(int index)
|
|
{
|
|
Component[] children = getMenuComponents();
|
|
int count = 0;
|
|
Accessible found = null;
|
|
for (int i = 0; i < children.length; i++)
|
|
{
|
|
if (children[i] instanceof Accessible)
|
|
{
|
|
if (count == index)
|
|
{
|
|
found = (Accessible) children[i];
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
}
|
|
return found;
|
|
}
|
|
|
|
/**
|
|
* Returns the accessible selection of this object. AccessibleJMenus handle
|
|
* their selection themselves, so we always return <code>this</code> here.
|
|
*
|
|
* @return the accessible selection of this object
|
|
*/
|
|
public AccessibleSelection getAccessibleSelection()
|
|
{
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Returns the selected accessible child with the specified
|
|
* <code>index</code>.
|
|
*
|
|
* @param index the index of the accessible selected child to return
|
|
*
|
|
* @return the selected accessible child with the specified
|
|
* <code>index</code>
|
|
*/
|
|
public Accessible getAccessibleSelection(int index)
|
|
{
|
|
Accessible selected = null;
|
|
// Only one item can be selected, which must therefore have index == 0.
|
|
if (index == 0)
|
|
{
|
|
MenuSelectionManager msm = MenuSelectionManager.defaultManager();
|
|
MenuElement[] me = msm.getSelectedPath();
|
|
if (me != null)
|
|
{
|
|
for (int i = 0; i < me.length; i++)
|
|
{
|
|
if (me[i] == JMenu.this)
|
|
{
|
|
// This JMenu is selected, find and return the next
|
|
// JMenuItem in the path.
|
|
do
|
|
{
|
|
if (me[i] instanceof Accessible)
|
|
{
|
|
selected = (Accessible) me[i];
|
|
break;
|
|
}
|
|
i++;
|
|
} while (i < me.length);
|
|
}
|
|
if (selected != null)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return selected;
|
|
}
|
|
|
|
/**
|
|
* Returns <code>true</code> if the accessible child with the specified
|
|
* index is selected, <code>false</code> otherwise.
|
|
*
|
|
* @param index the index of the accessible child to check
|
|
*
|
|
* @return <code>true</code> if the accessible child with the specified
|
|
* index is selected, <code>false</code> otherwise
|
|
*/
|
|
public boolean isAccessibleChildSelected(int index)
|
|
{
|
|
boolean selected = false;
|
|
MenuSelectionManager msm = MenuSelectionManager.defaultManager();
|
|
MenuElement[] me = msm.getSelectedPath();
|
|
if (me != null)
|
|
{
|
|
Accessible toBeFound = getAccessibleChild(index);
|
|
for (int i = 0; i < me.length; i++)
|
|
{
|
|
if (me[i] == toBeFound)
|
|
{
|
|
selected = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return selected;
|
|
}
|
|
|
|
/**
|
|
* Returns the accessible role of this object, which is
|
|
* {@link AccessibleRole#MENU} for the AccessibleJMenu.
|
|
*
|
|
* @return the accessible role of this object
|
|
*/
|
|
public AccessibleRole getAccessibleRole()
|
|
{
|
|
return AccessibleRole.MENU;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of selected accessible children. This will be
|
|
* <code>0</code> if no item is selected, or <code>1</code> if an item
|
|
* is selected. AccessibleJMenu can have maximum 1 selected item.
|
|
*
|
|
* @return the number of selected accessible children
|
|
*/
|
|
public int getAccessibleSelectionCount()
|
|
{
|
|
int count = 0;
|
|
MenuSelectionManager msm = MenuSelectionManager.defaultManager();
|
|
MenuElement[] me = msm.getSelectedPath();
|
|
if (me != null)
|
|
{
|
|
for (int i = 0; i < me.length; i++)
|
|
{
|
|
if (me[i] == JMenu.this)
|
|
{
|
|
if (i + 1 < me.length)
|
|
{
|
|
count = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* Selects the accessible child with the specified index.
|
|
*
|
|
* @param index the index of the accessible child to select
|
|
*/
|
|
public void addAccessibleSelection(int index)
|
|
{
|
|
Accessible child = getAccessibleChild(index);
|
|
if (child != null && child instanceof JMenuItem)
|
|
{
|
|
JMenuItem mi = (JMenuItem) child;
|
|
MenuSelectionManager msm = MenuSelectionManager.defaultManager();
|
|
msm.setSelectedPath(createPath(JMenu.this));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the item with the specified index from the selection.
|
|
*
|
|
* @param index the index of the selected item to remove from the selection
|
|
*/
|
|
public void removeAccessibleSelection(int index)
|
|
{
|
|
Accessible child = getAccessibleChild(index);
|
|
if (child != null)
|
|
{
|
|
MenuSelectionManager msm = MenuSelectionManager.defaultManager();
|
|
MenuElement[] oldSelection = msm.getSelectedPath();
|
|
for (int i = 0; i < oldSelection.length; i++)
|
|
{
|
|
if (oldSelection[i] == child)
|
|
{
|
|
// Found the specified child in the selection. Remove it
|
|
// from the selection.
|
|
MenuElement[] newSel = new MenuElement[i - 1];
|
|
System.arraycopy(oldSelection, 0, newSel, 0, i - 1);
|
|
msm.setSelectedPath(newSel);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes all possibly selected accessible children of this object from
|
|
* the selection.
|
|
*/
|
|
public void clearAccessibleSelection()
|
|
{
|
|
MenuSelectionManager msm = MenuSelectionManager.defaultManager();
|
|
MenuElement[] oldSelection = msm.getSelectedPath();
|
|
for (int i = 0; i < oldSelection.length; i++)
|
|
{
|
|
if (oldSelection[i] == JMenu.this)
|
|
{
|
|
// Found this menu in the selection. Remove all children from
|
|
// the selection.
|
|
MenuElement[] newSel = new MenuElement[i];
|
|
System.arraycopy(oldSelection, 0, newSel, 0, i);
|
|
msm.setSelectedPath(newSel);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* AccessibleJMenu don't support multiple selection, so this method
|
|
* does nothing.
|
|
*/
|
|
public void selectAllAccessibleSelection()
|
|
{
|
|
// Nothing to do here.
|
|
}
|
|
}
|
|
|
|
protected class WinListener extends WindowAdapter implements Serializable
|
|
{
|
|
private static final long serialVersionUID = -6415815570638474823L;
|
|
|
|
/**
|
|
* Creates a new <code>WinListener</code>.
|
|
*
|
|
* @param popup the popup menu which is observed
|
|
*/
|
|
public WinListener(JPopupMenu popup)
|
|
{
|
|
// TODO: What should we do with the popup argument?
|
|
}
|
|
|
|
/**
|
|
* Receives notification when the popup menu is closing and deselects
|
|
* the menu.
|
|
*
|
|
* @param event the window event
|
|
*/
|
|
public void windowClosing(WindowEvent event)
|
|
{
|
|
setSelected(false);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This class listens to PropertyChangeEvents occuring in menu's action
|
|
*/
|
|
private class ActionChangedListener implements PropertyChangeListener
|
|
{
|
|
/** menu item associated with the action */
|
|
private JMenuItem menuItem;
|
|
|
|
/** Creates new ActionChangedListener and adds it to menuItem's action */
|
|
public ActionChangedListener(JMenuItem menuItem)
|
|
{
|
|
this.menuItem = menuItem;
|
|
|
|
Action a = menuItem.getAction();
|
|
if (a != null)
|
|
a.addPropertyChangeListener(this);
|
|
}
|
|
|
|
/**This method is invoked when some change occures in menuItem's action*/
|
|
public void propertyChange(PropertyChangeEvent evt)
|
|
{
|
|
// FIXME: Need to implement
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates an array to be feeded as argument to
|
|
* {@link MenuSelectionManager#setSelectedPath(MenuElement[])} for the
|
|
* specified element. This has the effect of selecting the specified element
|
|
* and all its parents.
|
|
*
|
|
* @param leaf the leaf element for which to create the selected path
|
|
*
|
|
* @return the selected path array
|
|
*/
|
|
MenuElement[] createPath(JMenu leaf)
|
|
{
|
|
ArrayList path = new ArrayList();
|
|
MenuElement[] array = null;
|
|
Component current = leaf.getPopupMenu();
|
|
while (true)
|
|
{
|
|
if (current instanceof JPopupMenu)
|
|
{
|
|
JPopupMenu popupMenu = (JPopupMenu) current;
|
|
path.add(0, popupMenu);
|
|
current = popupMenu.getInvoker();
|
|
}
|
|
else if (current instanceof JMenu)
|
|
{
|
|
JMenu menu = (JMenu) current;
|
|
path.add(0, menu);
|
|
current = menu.getParent();
|
|
}
|
|
else if (current instanceof JMenuBar)
|
|
{
|
|
JMenuBar menuBar = (JMenuBar) current;
|
|
path.add(0, menuBar);
|
|
array = new MenuElement[path.size()];
|
|
array = (MenuElement[]) path.toArray(array);
|
|
break;
|
|
}
|
|
}
|
|
return array;
|
|
}
|
|
}
|