1 /*
   2  * Copyright (c) 2015, 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 package sun.awt.X11;
  26 
  27 import java.awt.MenuItem;
  28 import java.awt.PopupMenu;
  29 import java.awt.Taskbar.Feature;
  30 import java.awt.peer.TaskbarPeer;
  31 import java.awt.event.ActionEvent;
  32 import sun.misc.ManagedLocalsThread;
  33 import java.security.AccessController;
  34 import sun.security.action.GetPropertyAction;
  35 
  36 final class XTaskbarPeer implements TaskbarPeer {
  37 
  38     private static boolean nativeLibraryLoaded = false;
  39     private static boolean initExecuted = false;
  40 
  41     private PopupMenu menu = null;
  42 
  43     private static void initWithLock() {
  44         XToolkit.awtLock();
  45         try {
  46             if (!initExecuted) {
  47                 String dname = AccessController.doPrivileged(
  48                                 new GetPropertyAction("java.desktop.appName", ""));
  49                 nativeLibraryLoaded = init(dname);
  50                 if (nativeLibraryLoaded) {
  51                     ManagedLocalsThread t
  52                             = new ManagedLocalsThread(() -> {
  53                                 runloop();
  54                             });
  55                     t.setDaemon(true);
  56                     t.start();
  57                 }
  58             }
  59         } finally {
  60             initExecuted = true;
  61             XToolkit.awtUnlock();
  62         }
  63     }
  64 
  65     XTaskbarPeer() {
  66         initWithLock();
  67     }
  68 
  69     static boolean isTaskbarSupported() {
  70         initWithLock();
  71         return nativeLibraryLoaded;
  72     }
  73 
  74     @Override
  75     public boolean isSupported(Feature feature) {
  76         switch (feature) {
  77             case ICON_BADGE_NUMBER:
  78             case MENU:
  79             case PROGRESS_VALUE:
  80             case USER_ATTENTION:
  81                 return true;
  82             default:
  83                 return false;
  84         }
  85     }
  86     
  87     @Override
  88     public void setProgressValue(int value) {
  89         boolean visible
  90                 = value >= 0
  91                 && value <= 100;
  92 
  93         double v = visible
  94                 ? (double) value / 100
  95                 : 0d;
  96 
  97         updateProgress(v, visible);
  98     }
  99 
 100     @Override
 101     public void setIconBadge(String badge) {
 102         boolean visible = false;
 103         long val = 0;
 104         if (badge != null) {
 105             try {
 106                 val = Long.parseLong(badge);
 107                 visible = true;
 108             } catch (NumberFormatException e) {
 109             }
 110         }
 111         setBadge(val, visible);
 112     }
 113 
 114     @Override
 115     public PopupMenu getMenu() {
 116         return menu;
 117     }
 118 
 119     @Override
 120     public synchronized void setMenu(PopupMenu m) {
 121         this.menu = m;
 122 
 123         if (menu != null && menu.getItemCount() > 0) {
 124             int msize = menu.getItemCount();
 125             MenuItem[] items = new MenuItem[msize];
 126             for (int i = 0; i < msize; i++) {
 127                 items[i] = menu.getItem(i);
 128             }
 129             setNativeMenu(items);
 130         } else {
 131             setNativeMenu(null);
 132         }
 133     }
 134 
 135     @Override
 136     public void requestUserAttention(boolean enabled, boolean critical) {
 137         setUrgent(enabled);
 138     }
 139 
 140     private static void menuItemCallback(MenuItem mi) {
 141         if (mi != null) {
 142             ActionEvent ae = new ActionEvent(mi, ActionEvent.ACTION_PERFORMED,
 143                     mi.getActionCommand());
 144             try {
 145                 XToolkit.awtLock();
 146                 XToolkit.postEvent(XToolkit.targetToAppContext(ae.getSource()), ae);
 147             } finally {
 148                 XToolkit.awtUnlock();
 149             }
 150         }
 151     }
 152 
 153     private static native boolean init(String name);
 154 
 155     private static native void runloop();
 156 
 157     private native void setBadge(long value, boolean visible);
 158 
 159     private native void updateProgress(double value, boolean visible);
 160 
 161     private native void setUrgent(boolean urgent);
 162 
 163     private native void setNativeMenu(MenuItem[] items);
 164 }