1. /*

  2.  * @(#)WindowsPopupMenuUI.java	1.21 04/04/16

  3.  *

  4.  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package com.sun.java.swing.plaf.windows;

  9. 

  10. import java.awt.Component;

  11. import java.awt.KeyEventPostProcessor;

  12. import java.awt.KeyboardFocusManager;

  13. import java.awt.Window;

  14. import java.awt.event.KeyEvent;

  15. import javax.swing.*;

  16. import javax.swing.event.*;

  17. import javax.swing.plaf.*;

  18. import javax.swing.plaf.basic.*;

  19. 

  20. 

  21. /**

  22.  * Windows rendition of the component.

  23.  * <p>

  24.  * <strong>Warning:</strong>

  25.  * Serialized objects of this class will not be compatible with

  26.  * future Swing releases.  The current serialization support is appropriate

  27.  * for short term storage or RMI between applications running the same

  28.  * version of Swing.  A future release of Swing will provide support for

  29.  * long term persistence.

  30.  */

  31. public class WindowsPopupMenuUI extends BasicPopupMenuUI {

  32. 

  33.     static MnemonicListener mnemonicListener = null;

  34. 

  35.     public static ComponentUI createUI(JComponent c) {

  36. 	return new WindowsPopupMenuUI();

  37.     }

  38. 

  39.     public void installListeners() {

  40.         super.installListeners();

  41. 	if (! UIManager.getBoolean("Button.showMnemonics") &&

  42.             mnemonicListener == null) {

  43. 

  44.             mnemonicListener = new MnemonicListener();

  45.             MenuSelectionManager.defaultManager().

  46.                 addChangeListener(mnemonicListener);

  47.         }

  48.     }

  49. 

  50.     /**

  51.      * Returns the <code>Popup</code> that will be responsible for

  52.      * displaying the <code>JPopupMenu</code>.

  53.      *

  54.      * @param popupMenu JPopupMenu requesting Popup

  55.      * @param x     Screen x location Popup is to be shown at

  56.      * @param y     Screen y location Popup is to be shown at.

  57.      * @return Popup that will show the JPopupMenu

  58.      * @since 1.4

  59.      */

  60.     public Popup getPopup(JPopupMenu popupMenu, int x, int y) {

  61.         PopupFactory popupFactory = PopupFactory.getSharedInstance();

  62.         return popupFactory.getPopup(popupMenu.getInvoker(), popupMenu, x, y);

  63.     }

  64. 

  65.     static class MnemonicListener implements ChangeListener {

  66.         JRootPane repaintRoot = null;

  67. 

  68.         public void stateChanged(ChangeEvent ev) {

  69. 	    MenuSelectionManager msm = (MenuSelectionManager)ev.getSource();

  70.             MenuElement[] path = msm.getSelectedPath();

  71.             if (path.length == 0) {

  72.                 if(!WindowsLookAndFeel.isMnemonicHidden()) {

  73.                     // menu was canceled -- hide mnemonics

  74.                     WindowsLookAndFeel.setMnemonicHidden(true);

  75.                     if (repaintRoot != null) {

  76.                         Window win =

  77.                             SwingUtilities.getWindowAncestor(repaintRoot);

  78.                         WindowsUtils.repaintMnemonicsInWindow(win);

  79.                     }

  80.                 }

  81.             } else {

  82.                 Component c = (Component)path[0];

  83.                 if (c instanceof JPopupMenu) c = ((JPopupMenu)c).getInvoker();

  84.                 repaintRoot = SwingUtilities.getRootPane(c);

  85.             }

  86.         }

  87.     }

  88. }