/[classpath]/classpath/javax/swing/plaf/PopupMenuUI.java
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revision 1.1 by aselkirk, Tue May 28 05:18:35 2002 UTC revision 1.2 by brawer, Wed Jun 25 13:29:39 2003 UTC
# Line 1  Line 1 
1  /* PopupMenuUI.java --  /* PopupMenuUI.java --
2     Copyright (C) 2002 Free Software Foundation, Inc.     Copyright (C) 2002, 2003 Free Software Foundation, Inc.
3    
4  This file is part of GNU Classpath.  This file is part of GNU Classpath.
5    
# Line 37  exception statement from your version. * Line 37  exception statement from your version. *
37    
38  package javax.swing.plaf;  package javax.swing.plaf;
39    
40  // Imports  import java.awt.event.MouseEvent;
41  import java.awt.event.*;  import javax.swing.JPopupMenu;
42    import javax.swing.Popup;
43    import javax.swing.PopupFactory;
44    
45    
46  /**  /**
47   * PopupMenuUI   * An abstract base class for delegates that implement the pluggable
48   * @author      Andrew Selkirk   * look and feel for a <code>JPopupMenu</code>.
49   * @version     1.0   *
50     * @see javax.swing.JPopupMenu
51     *
52     * @author Andrew Selkirk (aselkirk@sympatico.ca)
53     * @author Sascha Brawer (brawer@dandelis.ch)
54   */   */
55  public abstract class PopupMenuUI extends ComponentUI {  public abstract class PopupMenuUI
56      extends ComponentUI
57          //-------------------------------------------------------------  {
58          // Initialization ---------------------------------------------    /**
59          //-------------------------------------------------------------     * Constructs a new <code>PopupMenuUI</code>.
60       */
61          /**    public PopupMenuUI()
62           * Constructor PopupMenuUI    {
63           */    }
64          public PopupMenuUI() {  
65                  // TODO  
66          } // PopupMenuUI()    /**
67       * Tests whether or not a mouse event triggers a popup menu.
68       *
69          //-------------------------------------------------------------     * <p>The default implementation calls
70          // Methods ----------------------------------------------------     * <code>event.isPopupTrigger()</code>, which checks for the gesture
71          //-------------------------------------------------------------     * that is common for the platform on which the application runs. If
72       * a look and feel wants to employ non-standard conventions for
73          /**     * triggering a popup menu, it can override this method.
74           * isPopupTrigger     *
75           * @param event TODO     * @param event the event to check.
76           * @returns boolean     *
77           */     * @return <code>true</code> if the event triggers a popup menu;
78          public boolean isPopupTrigger(MouseEvent event) {     *         <code>false</code> otherwise.
79                  return false; // TODO     *
80          } // isPopupTrigger()     * @since 1.3
81       */
82      public boolean isPopupTrigger(MouseEvent event)
83  } // PopupMenuUI    {
84        return event.isPopupTrigger();
85      }
86    
87    
88      /**
89       * Creates a <code>Popup</code> for displaying the popup menu.  The
90       * default implementation uses the {@link javax.swing.PopupFactory}
91       * for retrieving a suitable <code>Popup</code>, but subclasses
92       * might want to override this method if a LookAndFeel needs special
93       * Popups.
94       *
95       * @param popup the <code>JPopupMenu</code> for whose display
96       *        a <code>Popup</code> is needed.
97       *
98       * @param x the horizontal position where the popup will be
99       *        displayed.
100       *
101       * @param y the vertical position where the popup will be
102       *        displayed.
103       *
104       * @return a <code>Popup</code> for showing and hiding
105       *         the menu.
106       *
107       * @since 1.4
108       */
109      public Popup getPopup(JPopupMenu popup, int x, int y)
110      {
111        return PopupFactory.getSharedInstance().getPopup(
112          /* origin/owner of the popup */ popup.getInvoker(),
113          /* contents */                  popup,
114          x, y);
115      }
116    }

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