| /* PopupMenuUI.java -- |
| Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing.plaf; |
| |
| import java.awt.event.MouseEvent; |
| |
| import javax.swing.JPopupMenu; |
| import javax.swing.Popup; |
| import javax.swing.PopupFactory; |
| |
| /** |
| * An abstract base class for delegates that implement the pluggable |
| * look and feel for a <code>JPopupMenu</code>. |
| * |
| * @see javax.swing.JPopupMenu |
| * |
| * @author Andrew Selkirk (aselkirk@sympatico.ca) |
| * @author Sascha Brawer (brawer@dandelis.ch) |
| */ |
| public abstract class PopupMenuUI |
| extends ComponentUI |
| { |
| /** |
| * Constructs a new <code>PopupMenuUI</code>. |
| */ |
| public PopupMenuUI() |
| { |
| } |
| |
| |
| /** |
| * Tests whether or not a mouse event triggers a popup menu. |
| * |
| * <p>The default implementation calls |
| * <code>event.isPopupTrigger()</code>, which checks for the gesture |
| * that is common for the platform on which the application runs. If |
| * a look and feel wants to employ non-standard conventions for |
| * triggering a popup menu, it can override this method. |
| * |
| * @param event the event to check. |
| * |
| * @return <code>true</code> if the event triggers a popup menu; |
| * <code>false</code> otherwise. |
| * |
| * @since 1.3 |
| */ |
| public boolean isPopupTrigger(MouseEvent event) |
| { |
| return event.isPopupTrigger(); |
| } |
| |
| |
| /** |
| * Creates a <code>Popup</code> for displaying the popup menu. The |
| * default implementation uses the {@link javax.swing.PopupFactory} |
| * for retrieving a suitable <code>Popup</code>, but subclasses |
| * might want to override this method if a LookAndFeel needs special |
| * Popups. |
| * |
| * @param popup the <code>JPopupMenu</code> for whose display |
| * a <code>Popup</code> is needed. |
| * |
| * @param x the horizontal position where the popup will be |
| * displayed. |
| * |
| * @param y the vertical position where the popup will be |
| * displayed. |
| * |
| * @return a <code>Popup</code> for showing and hiding |
| * the menu. |
| * |
| * @since 1.4 |
| */ |
| public Popup getPopup(JPopupMenu popup, int x, int y) |
| { |
| return PopupFactory.getSharedInstance().getPopup( |
| /* origin/owner of the popup */ popup.getInvoker(), |
| /* contents */ popup, |
| x, y); |
| } |
| } |