1 /*
2 * Copyright (c) 2005, 2018, 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 sun.awt.X11;
27
28 import java.awt.*;
29 import java.awt.peer.SystemTrayPeer;
30 import sun.awt.SunToolkit;
31 import sun.awt.AppContext;
32 import sun.awt.AWTAccessor;
33 import sun.util.logging.PlatformLogger;
34
35 public class XSystemTrayPeer implements SystemTrayPeer, XMSelectionListener {
36 private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.X11.XSystemTrayPeer");
37
38 SystemTray target;
39 static XSystemTrayPeer peerInstance; // there is only one SystemTray peer per application
40
41 private volatile boolean available;
42 private final XMSelection selection = new XMSelection("_NET_SYSTEM_TRAY");
43
44 private static final int SCREEN = 0;
45 private static final String SYSTEM_TRAY_PROPERTY_NAME = "systemTray";
46 private static final XAtom _NET_SYSTEM_TRAY = XAtom.get("_NET_SYSTEM_TRAY_S" + SCREEN);
47 private static final XAtom _XEMBED_INFO = XAtom.get("_XEMBED_INFO");
48 private static final XAtom _NET_SYSTEM_TRAY_OPCODE = XAtom.get("_NET_SYSTEM_TRAY_OPCODE");
49 private static final XAtom _NET_WM_ICON = XAtom.get("_NET_WM_ICON");
50 private static final long SYSTEM_TRAY_REQUEST_DOCK = 0;
51
52 XSystemTrayPeer(SystemTray target) {
53 this.target = target;
54 peerInstance = this;
55
56 selection.addSelectionListener(this);
57
58 long selection_owner = selection.getOwner(SCREEN);
59 available = (selection_owner != XConstants.None);
60
61 if (log.isLoggable(PlatformLogger.Level.FINE)) {
62 log.fine(" check if system tray is available. selection owner: " + selection_owner);
63 }
64 }
65
66 public void ownerChanged(int screen, XMSelection sel, long newOwner, long data, long timestamp) {
67 if (screen != SCREEN) {
68 return;
69 }
70 if (!available) {
71 available = true;
72 firePropertyChange(SYSTEM_TRAY_PROPERTY_NAME, null, target);
73 } else {
74 removeTrayPeers();
75 }
76 createTrayPeers();
77 }
78
79 public void ownerDeath(int screen, XMSelection sel, long deadOwner) {
80 if (screen != SCREEN) {
81 return;
82 }
83 if (available) {
84 available = false;
85 firePropertyChange(SYSTEM_TRAY_PROPERTY_NAME, target, null);
86 removeTrayPeers();
87 }
88 }
89
90 public void selectionChanged(int screen, XMSelection sel, long owner, XPropertyEvent event) {
91 }
92
93 public Dimension getTrayIconSize() {
94 return new Dimension(XTrayIconPeer.TRAY_ICON_HEIGHT, XTrayIconPeer.TRAY_ICON_WIDTH);
95 }
96
97 boolean isAvailable() {
98 return available;
99 }
100
101 void dispose() {
102 selection.removeSelectionListener(this);
103 }
104
105 // ***********************************************************************
106 // ***********************************************************************
107
108 void addTrayIcon(XTrayIconPeer tiPeer) throws AWTException {
109 long selection_owner = selection.getOwner(SCREEN);
110
111 if (log.isLoggable(PlatformLogger.Level.FINE)) {
112 log.fine(" send SYSTEM_TRAY_REQUEST_DOCK message to owner: " + selection_owner);
113 }
114
115 if (selection_owner == XConstants.None) {
116 throw new AWTException("TrayIcon couldn't be displayed.");
117 }
118
119 long tray_window = tiPeer.getWindow();
120 long[] data = new long[] {XEmbedHelper.XEMBED_VERSION, XEmbedHelper.XEMBED_MAPPED};
121 long data_ptr = Native.card32ToData(data);
122
123 _XEMBED_INFO.setAtomData(tray_window, data_ptr, data.length);
124
125 sendMessage(selection_owner, SYSTEM_TRAY_REQUEST_DOCK, tray_window, 0, 0);
126 }
127
128 void sendMessage(long win, long msg, long data1, long data2, long data3) {
129 XClientMessageEvent xev = new XClientMessageEvent();
130
131 try {
132 xev.set_type(XConstants.ClientMessage);
133 xev.set_window(win);
134 xev.set_format(32);
135 xev.set_message_type(_NET_SYSTEM_TRAY_OPCODE.getAtom());
136 xev.set_data(0, 0);
137 xev.set_data(1, msg);
138 xev.set_data(2, data1);
139 xev.set_data(3, data2);
140 xev.set_data(4, data3);
141
142 XToolkit.awtLock();
143 try {
144 XlibWrapper.XSendEvent(XToolkit.getDisplay(), win, false,
145 XConstants.NoEventMask, xev.pData);
146 } finally {
147 XToolkit.awtUnlock();
148 }
149 } finally {
150 xev.dispose();
151 }
152 }
153
154 static XSystemTrayPeer getPeerInstance() {
155 return peerInstance;
156 }
157
158 private void firePropertyChange(final String propertyName,
159 final Object oldValue,
160 final Object newValue) {
161 Runnable runnable = new Runnable() {
162 public void run() {
163 AWTAccessor.getSystemTrayAccessor()
164 .firePropertyChange(target, propertyName, oldValue, newValue);
165 }
166 };
167 invokeOnEachAppContext(runnable);
168 }
169
170 private void createTrayPeers() {
171 Runnable runnable = new Runnable() {
172 public void run() {
173 TrayIcon[] icons = target.getTrayIcons();
174 try {
175 for (TrayIcon ti : icons) {
176 AWTAccessor.getTrayIconAccessor().addNotify(ti);
177 }
178 } catch (AWTException e) {
179 }
180 }
181 };
182 invokeOnEachAppContext(runnable);
183 }
184
185 private void removeTrayPeers() {
186 Runnable runnable = new Runnable() {
187 public void run() {
188 TrayIcon[] icons = target.getTrayIcons();
189 for (TrayIcon ti : icons) {
190 AWTAccessor.getTrayIconAccessor().removeNotify(ti);
191 }
192 }
193 };
194 invokeOnEachAppContext(runnable);
195 }
196
197 private void invokeOnEachAppContext(Runnable runnable) {
198 for (AppContext appContext : AppContext.getAppContexts()) {
199 SunToolkit.invokeLaterOnAppContext(appContext, runnable);
200 }
201 }
202
203 }