41 import javax.swing.plaf.ComponentUI;
  42 import javax.swing.plaf.basic.BasicComboPopup;
  43 import javax.swing.event.*;
  44 
  45 import sun.awt.SunToolkit;
  46 import sun.security.util.SecurityConstants;
  47 
  48 import java.applet.Applet;
  49 
  50 /**
  51  * An implementation of a popup menu -- a small window that pops up
  52  * and displays a series of choices. A <code>JPopupMenu</code> is used for the
  53  * menu that appears when the user selects an item on the menu bar.
  54  * It is also used for "pull-right" menu that appears when the
  55  * selects a menu item that activates it. Finally, a <code>JPopupMenu</code>
  56  * can also be used anywhere else you want a menu to appear.  For
  57  * example, when the user right-clicks in a specified area.
  58  * <p>
  59  * For information and examples of using popup menus, see
  60  * <a
  61  href="http://java.sun.com/docs/books/tutorial/uiswing/components/menu.html">How to Use Menus</a>
  62  * in <em>The Java Tutorial.</em>
  63  * <p>
  64  * <strong>Warning:</strong> Swing is not thread safe. For more
  65  * information see <a
  66  * href="package-summary.html#threading">Swing's Threading
  67  * Policy</a>.
  68  * <p>
  69  * <strong>Warning:</strong>
  70  * Serialized objects of this class will not be compatible with
  71  * future Swing releases. The current serialization support is
  72  * appropriate for short term storage or RMI between applications running
  73  * the same version of Swing.  As of 1.4, support for long term storage
  74  * of all JavaBeans<sup><font size="-2">TM</font></sup>
  75  * has been added to the <code>java.beans</code> package.
  76  * Please see {@link java.beans.XMLEncoder}.
  77  *
  78  * @beaninfo
  79  *   attribute: isContainer false
  80  * description: A small window that pops up and displays a series of choices.
  81  *

  41 import javax.swing.plaf.ComponentUI;
  42 import javax.swing.plaf.basic.BasicComboPopup;
  43 import javax.swing.event.*;
  44 
  45 import sun.awt.SunToolkit;
  46 import sun.security.util.SecurityConstants;
  47 
  48 import java.applet.Applet;
  49 
  50 /**
  51  * An implementation of a popup menu -- a small window that pops up
  52  * and displays a series of choices. A <code>JPopupMenu</code> is used for the
  53  * menu that appears when the user selects an item on the menu bar.
  54  * It is also used for "pull-right" menu that appears when the
  55  * selects a menu item that activates it. Finally, a <code>JPopupMenu</code>
  56  * can also be used anywhere else you want a menu to appear.  For
  57  * example, when the user right-clicks in a specified area.
  58  * <p>
  59  * For information and examples of using popup menus, see
  60  * <a
  61  href="http://docs.oracle.com/javase/tutorial/uiswing/components/menu.html">How to Use Menus</a>
  62  * in <em>The Java Tutorial.</em>
  63  * <p>
  64  * <strong>Warning:</strong> Swing is not thread safe. For more
  65  * information see <a
  66  * href="package-summary.html#threading">Swing's Threading
  67  * Policy</a>.
  68  * <p>
  69  * <strong>Warning:</strong>
  70  * Serialized objects of this class will not be compatible with
  71  * future Swing releases. The current serialization support is
  72  * appropriate for short term storage or RMI between applications running
  73  * the same version of Swing.  As of 1.4, support for long term storage
  74  * of all JavaBeans<sup><font size="-2">TM</font></sup>
  75  * has been added to the <code>java.beans</code> package.
  76  * Please see {@link java.beans.XMLEncoder}.
  77  *
  78  * @beaninfo
  79  *   attribute: isContainer false
  80  * description: A small window that pops up and displays a series of choices.
  81  *