01: /*
02: * Beryl - A web platform based on XML, XSLT and Java
03: * This file is part of the Beryl XML GUI
04: *
05: * Copyright (C) 2004 Wenzel Jakob <wazlaf@tigris.org>
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11:
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-3107 USA
20: */
21:
22: package org.beryl.gui.widgets;
23:
24: import java.awt.Component;
25: import java.awt.event.MouseEvent;
26:
27: import javax.swing.JMenuItem;
28: import javax.swing.JPopupMenu;
29:
30: import org.beryl.gui.GUIEvent;
31: import org.beryl.gui.GUIException;
32: import org.beryl.gui.Widget;
33: import org.beryl.gui.WidgetInfo;
34:
35: public class PopupMenu extends Widget {
36: private static WidgetInfo popupMenuInfo = null;
37: private JPopupMenu popupMenu = null;
38:
39: static {
40: popupMenuInfo = new WidgetInfo(PopupMenu.class, widgetInfo);
41: popupMenuInfo.setSupportsAnchor(false);
42: };
43:
44: public PopupMenu(Widget parent, String name) throws GUIException {
45: super (parent, name);
46: popupMenu = new JPopupMenu();
47: }
48:
49: public void addChild(Widget widget, Object constraint)
50: throws GUIException {
51: if (widget instanceof MenuItem || widget instanceof CheckBox) {
52: popupMenu.add((JMenuItem) widget.getWidget());
53: addChild(widget);
54: } else if (widget instanceof Separator) {
55: Separator separator = (Separator) widget;
56: separator.menuSeparator = new JPopupMenu.Separator();
57: popupMenu.add(separator.menuSeparator);
58: addChild(widget);
59: } else {
60: throw new GUIException(
61: "Only MenuItem,CheckBox and Separator children allowed");
62: }
63: }
64:
65: public void removeChildWidget(Widget widget) throws GUIException {
66: if (widget instanceof MenuItem)
67: popupMenu.remove((JMenuItem) widget.getWidget());
68: else if (widget instanceof Separator)
69: popupMenu.remove(((Separator) widget).menuSeparator);
70: super .removeChildWidget(widget);
71: }
72:
73: /**
74: * Show the popup menu
75: * @param event The GUIEvent which documents the mouse right-click action
76: */
77: public void popup(GUIEvent event) {
78: MouseEvent mouseEvent = (MouseEvent) event.getSwingEvent();
79: popupMenu.show(((Widget) event.getSource()).getRealWidget(),
80: mouseEvent.getX(), mouseEvent.getY());
81: }
82:
83: public Component getWidget() {
84: return popupMenu;
85: }
86:
87: public WidgetInfo getWidgetInfo() {
88: return popupMenuInfo;
89: }
90: }
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