1 /*
   2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package javax.swing.plaf;
  27 
  28 import java.awt.event.MouseEvent;
  29 import javax.swing.Popup;
  30 import javax.swing.PopupFactory;
  31 import javax.swing.JPopupMenu;
  32 
  33 /**
  34  * Pluggable look and feel interface for JPopupMenu.
  35  *
  36  * @author Georges Saab
  37  * @author David Karlton
  38  */
  39 
  40 public abstract class PopupMenuUI extends ComponentUI {
  41     /**
  42      * Returns whether or not the given {@code MouseEvent} is the popup menu
  43      * trigger event for the platform
  44      *
  45      * @param e a {@code MouseEvent}
  46      * @return true if the {@code MouseEvent e} is the popup menu trigger
  47      * @since 1.3
  48      */
  49     public boolean isPopupTrigger(MouseEvent e) {
  50         return e.isPopupTrigger();
  51     }
  52 
  53     /**
  54      * Returns the {@code Popup} that will be responsible for
  55      * displaying the {@code JPopupMenu}.
  56      *
  57      * @param popup JPopupMenu requesting Popup
  58      * @param x     Screen x location Popup is to be shown at
  59      * @param y     Screen y location Popup is to be shown at.
  60      * @return Popup that will show the JPopupMenu
  61      * @since 1.4
  62      */
  63     public Popup getPopup(JPopupMenu popup, int x, int y) {
  64         PopupFactory popupFactory = PopupFactory.getSharedInstance();
  65 
  66         return popupFactory.getPopup(popup.getInvoker(), popup, x, y);
  67     }
  68 }