1 /*
   2  * Copyright (c) 2002, 2011, 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.*;
  28 import java.awt.event.InputEvent;
  29 import java.awt.event.MouseEvent;
  30 import java.awt.event.KeyEvent;
  31 import java.awt.datatransfer.Clipboard;
  32 import java.awt.dnd.DragSource;
  33 import java.awt.dnd.DragGestureListener;
  34 import java.awt.dnd.DragGestureEvent;
  35 import java.awt.dnd.DragGestureRecognizer;
  36 import java.awt.dnd.MouseDragGestureRecognizer;
  37 import java.awt.dnd.InvalidDnDOperationException;
  38 import java.awt.dnd.peer.DragSourceContextPeer;
  39 import java.awt.im.InputMethodHighlight;
  40 import java.awt.im.spi.InputMethodDescriptor;
  41 import java.awt.image.ColorModel;
  42 import java.awt.peer.*;
  43 import java.beans.PropertyChangeListener;
  44 import java.security.AccessController;
  45 import java.security.PrivilegedAction;
  46 import java.util.*;
  47 import javax.swing.LookAndFeel;
  48 import javax.swing.UIDefaults;
  49 import sun.awt.*;
  50 import sun.font.FontConfigManager;
  51 import sun.java2d.SunGraphicsEnvironment;
  52 import sun.misc.PerformanceLogger;
  53 import sun.print.PrintJob2D;
  54 import sun.security.action.GetPropertyAction;
  55 import sun.security.action.GetBooleanAction;
  56 import sun.util.logging.PlatformLogger;
  57 
  58 public final class XToolkit extends UNIXToolkit implements Runnable {
  59     private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.X11.XToolkit");
  60     private static final PlatformLogger eventLog = PlatformLogger.getLogger("sun.awt.X11.event.XToolkit");
  61     private static final PlatformLogger timeoutTaskLog = PlatformLogger.getLogger("sun.awt.X11.timeoutTask.XToolkit");
  62     private static final PlatformLogger keyEventLog = PlatformLogger.getLogger("sun.awt.X11.kye.XToolkit");
  63     private static final PlatformLogger backingStoreLog = PlatformLogger.getLogger("sun.awt.X11.backingStore.XToolkit");
  64 
  65     //There is 400 ms is set by default on Windows and 500 by default on KDE and GNOME.
  66     //We use the same hardcoded constant.
  67     private final static int AWT_MULTICLICK_DEFAULT_TIME = 500;
  68 
  69     static final boolean PRIMARY_LOOP = false;
  70     static final boolean SECONDARY_LOOP = true;
  71 
  72     private static String awtAppClassName = null;
  73 
  74     // the system clipboard - CLIPBOARD selection
  75     XClipboard clipboard;
  76     // the system selection - PRIMARY selection
  77     XClipboard selection;
  78 
  79     // Dynamic Layout Resize client code setting
  80     protected static boolean dynamicLayoutSetting = false;
  81 
  82     //Is it allowed to generate events assigned to extra mouse buttons.
  83     //Set to true by default.
  84     private static boolean areExtraMouseButtonsEnabled = true;
  85 
  86     /**
  87      * True when the x settings have been loaded.
  88      */
  89     private boolean loadedXSettings;
  90 
  91     /**
  92     * XSETTINGS for the default screen.
  93      * <p>
  94      */
  95     private XSettings xs;
  96 
  97     private FontConfigManager fcManager = new FontConfigManager();
  98 
  99     static int arrowCursor;
 100     static TreeMap winMap = new TreeMap();
 101     static HashMap specialPeerMap = new HashMap();
 102     static HashMap winToDispatcher = new HashMap();
 103     private static long _display;
 104     static UIDefaults uidefaults;
 105     static X11GraphicsEnvironment localEnv;
 106     static X11GraphicsDevice device;
 107     static final X11GraphicsConfig config;
 108     static int awt_multiclick_time;
 109     static boolean securityWarningEnabled;
 110 
 111     private static volatile int screenWidth = -1, screenHeight = -1; // Dimensions of default screen
 112     static long awt_defaultFg; // Pixel
 113     private static XMouseInfoPeer xPeer;
 114 
 115     static {
 116         initSecurityWarning();
 117         if (GraphicsEnvironment.isHeadless()) {
 118             config = null;
 119         } else {
 120             localEnv = (X11GraphicsEnvironment) GraphicsEnvironment
 121                 .getLocalGraphicsEnvironment();
 122             device = (X11GraphicsDevice) localEnv.getDefaultScreenDevice();
 123             config = (X11GraphicsConfig) (device.getDefaultConfiguration());
 124             if (device != null) {
 125                 _display = device.getDisplay();
 126             }
 127             setupModifierMap();
 128             initIDs();
 129             setBackingStoreType();
 130         }
 131         noisyAwtHandler = AccessController.doPrivileged(new GetBooleanAction("sun.awt.noisyerrorhandler"));
 132     }
 133 
 134     /*
 135      * Return (potentially) platform specific display timeout for the
 136      * tray icon
 137      */
 138     static native long getTrayIconDisplayTimeout();
 139 
 140     //---- ERROR HANDLER CODE ----//
 141 
 142     /*
 143      * Error handler at the moment of XToolkit initialization
 144      */
 145     private static long saved_error_handler;
 146 
 147     /*
 148      * XErrorEvent being handled
 149      */
 150     static volatile XErrorEvent saved_error;
 151 
 152     /*
 153      * Current error handler or null if no error handler is set
 154      */
 155     private static XErrorHandler current_error_handler;
 156 
 157     /*
 158      * Value of sun.awt.noisyerrorhandler system property
 159      */
 160     private static boolean noisyAwtHandler;
 161 
 162     public static void WITH_XERROR_HANDLER(XErrorHandler handler) {
 163         saved_error = null;
 164         current_error_handler = handler;
 165     }
 166 
 167     public static void RESTORE_XERROR_HANDLER() {
 168         // wait until all requests are processed by the X server
 169         // and only then uninstall the error handler
 170         XSync();
 171         current_error_handler = null;
 172     }
 173 
 174     // Should be called under LOCK
 175     public static int SAVED_ERROR_HANDLER(long display, XErrorEvent error) {
 176         if (saved_error_handler != 0) {
 177             // Default XErrorHandler may just terminate the process. Don't call it.
 178             // return XlibWrapper.CallErrorHandler(saved_error_handler, display, error.pData);
 179         }
 180         if (log.isLoggable(PlatformLogger.FINE)) {
 181             log.fine("Unhandled XErrorEvent: " +
 182                      "id=" + error.get_resourceid() + ", " +
 183                      "serial=" + error.get_serial() + ", " +
 184                      "ec=" + error.get_error_code() + ", " +
 185                      "rc=" + error.get_request_code() + ", " +
 186                      "mc=" + error.get_minor_code());
 187         }
 188         return 0;
 189     }
 190 
 191     // Called from the native code when an error occurs
 192     private static int globalErrorHandler(long display, long event_ptr) {
 193         if (noisyAwtHandler) {
 194             XlibWrapper.PrintXErrorEvent(display, event_ptr);
 195         }
 196         XErrorEvent event = new XErrorEvent(event_ptr);
 197         saved_error = event;
 198         try {
 199             if (current_error_handler != null) {
 200                 return current_error_handler.handleError(display, event);
 201             } else {
 202                 return SAVED_ERROR_HANDLER(display, event);
 203             }
 204         } catch (Throwable z) {
 205             log.fine("Error in GlobalErrorHandler", z);
 206         }
 207         return 0;
 208     }
 209 
 210     //---- END OF ERROR HANDLER CODE ----//
 211 
 212     private native static void initIDs();
 213     native static void waitForEvents(long nextTaskTime);
 214     static Thread toolkitThread;
 215     static boolean isToolkitThread() {
 216         return Thread.currentThread() == toolkitThread;
 217     }
 218 
 219     static void initSecurityWarning() {
 220         // Enable warning only for internal builds
 221         String runtime = AccessController.doPrivileged(
 222                              new GetPropertyAction("java.runtime.version"));
 223         securityWarningEnabled = (runtime != null && runtime.contains("internal"));
 224     }
 225 
 226     static boolean isSecurityWarningEnabled() {
 227         return securityWarningEnabled;
 228     }
 229 
 230     static native void awt_output_flush();
 231 
 232     static final void  awtFUnlock() {
 233         awtUnlock();
 234         awt_output_flush();
 235     }
 236 
 237 
 238     public native void nativeLoadSystemColors(int[] systemColors);
 239 
 240     static UIDefaults getUIDefaults() {
 241         if (uidefaults == null) {
 242             initUIDefaults();
 243         }
 244         return uidefaults;
 245     }
 246 
 247     public void loadSystemColors(int[] systemColors) {
 248         nativeLoadSystemColors(systemColors);
 249         MotifColorUtilities.loadSystemColors(systemColors);
 250     }
 251 
 252 
 253 
 254     static void initUIDefaults() {
 255         try {
 256             // Load Defaults from MotifLookAndFeel
 257 
 258             // This dummy load is necessary to get SystemColor initialized. !!!!!!
 259             Color c = SystemColor.text;
 260 
 261             LookAndFeel lnf = new XAWTLookAndFeel();
 262             uidefaults = lnf.getDefaults();
 263         }
 264         catch (Exception e)
 265         {
 266             e.printStackTrace();
 267         }
 268     }
 269 
 270     static Object displayLock = new Object();
 271 
 272     public static long getDisplay() {
 273         return _display;
 274     }
 275 
 276     public static long getDefaultRootWindow() {
 277         awtLock();
 278         try {
 279             long res = XlibWrapper.RootWindow(XToolkit.getDisplay(),
 280                 XlibWrapper.DefaultScreen(XToolkit.getDisplay()));
 281 
 282             if (res == 0) {
 283                throw new IllegalStateException("Root window must not be null");
 284             }
 285             return res;
 286         } finally {
 287             awtUnlock();
 288         }
 289     }
 290 
 291     void init() {
 292         awtLock();
 293         try {
 294             XlibWrapper.XSupportsLocale();
 295             if (XlibWrapper.XSetLocaleModifiers("") == null) {
 296                 log.finer("X locale modifiers are not supported, using default");
 297             }
 298             tryXKB();
 299 
 300             AwtScreenData defaultScreen = new AwtScreenData(XToolkit.getDefaultScreenData());
 301             awt_defaultFg = defaultScreen.get_blackpixel();
 302 
 303             arrowCursor = XlibWrapper.XCreateFontCursor(XToolkit.getDisplay(),
 304                 XCursorFontConstants.XC_arrow);
 305             areExtraMouseButtonsEnabled = Boolean.parseBoolean(System.getProperty("sun.awt.enableExtraMouseButtons", "true"));
 306             //set system property if not yet assigned
 307             System.setProperty("sun.awt.enableExtraMouseButtons", ""+areExtraMouseButtonsEnabled);
 308 
 309             saved_error_handler = XlibWrapper.SetToolkitErrorHandler();
 310 
 311             // Detect display mode changes
 312             XlibWrapper.XSelectInput(XToolkit.getDisplay(), XToolkit.getDefaultRootWindow(), XConstants.StructureNotifyMask);
 313             XToolkit.addEventDispatcher(XToolkit.getDefaultRootWindow(), new XEventDispatcher() {
 314                 @Override
 315                 public void dispatchEvent(XEvent ev) {
 316                     if (ev.get_type() == XConstants.ConfigureNotify) {
 317                         ((X11GraphicsEnvironment)GraphicsEnvironment.
 318                          getLocalGraphicsEnvironment()).
 319                             displayChanged();
 320                     }
 321                 }
 322             });
 323         } finally {
 324             awtUnlock();
 325         }
 326         PrivilegedAction<Void> a = new PrivilegedAction<Void>() {
 327             public Void run() {
 328                 ThreadGroup mainTG = Thread.currentThread().getThreadGroup();
 329                 ThreadGroup parentTG = mainTG.getParent();
 330                 while (parentTG != null) {
 331                     mainTG = parentTG;
 332                     parentTG = mainTG.getParent();
 333                 }
 334                 Thread shutdownThread = new Thread(mainTG, "XToolkt-Shutdown-Thread") {
 335                         public void run() {
 336                             XSystemTrayPeer peer = XSystemTrayPeer.getPeerInstance();
 337                             if (peer != null) {
 338                                 peer.dispose();
 339                             }
 340                             if (xs != null) {
 341                                 ((XAWTXSettings)xs).dispose();
 342                             }
 343                             freeXKB();
 344                             if (log.isLoggable(PlatformLogger.FINE)) {
 345                                 dumpPeers();
 346                             }
 347                         }
 348                     };
 349                 shutdownThread.setContextClassLoader(null);
 350                 Runtime.getRuntime().addShutdownHook(shutdownThread);
 351                 return null;
 352             }
 353         };
 354         AccessController.doPrivileged(a);
 355     }
 356 
 357     static String getCorrectXIDString(String val) {
 358         if (val != null) {
 359             return val.replace('.', '-');
 360         } else {
 361             return val;
 362         }
 363     }
 364 
 365     static native String getEnv(String key);
 366 
 367 
 368     static String getAWTAppClassName() {
 369         return awtAppClassName;
 370     }
 371 
 372     static final String DATA_TRANSFERER_CLASS_NAME = "sun.awt.X11.XDataTransferer";
 373 
 374     public XToolkit() {
 375         super();
 376         if (PerformanceLogger.loggingEnabled()) {
 377             PerformanceLogger.setTime("XToolkit construction");
 378         }
 379 
 380         if (!GraphicsEnvironment.isHeadless()) {
 381             String mainClassName = null;
 382 
 383             StackTraceElement trace[] = (new Throwable()).getStackTrace();
 384             int bottom = trace.length - 1;
 385             if (bottom >= 0) {
 386                 mainClassName = trace[bottom].getClassName();
 387             }
 388             if (mainClassName == null || mainClassName.equals("")) {
 389                 mainClassName = "AWT";
 390             }
 391             awtAppClassName = getCorrectXIDString(mainClassName);
 392 
 393             init();
 394             XWM.init();
 395             SunToolkit.setDataTransfererClassName(DATA_TRANSFERER_CLASS_NAME);
 396 
 397             PrivilegedAction<Thread> action = new PrivilegedAction() {
 398                 public Thread run() {
 399                     ThreadGroup currentTG = Thread.currentThread().getThreadGroup();
 400                     ThreadGroup parentTG = currentTG.getParent();
 401                     while (parentTG != null) {
 402                         currentTG = parentTG;
 403                         parentTG = currentTG.getParent();
 404                     }
 405                     Thread thread = new Thread(currentTG, XToolkit.this, "AWT-XAWT");
 406                     thread.setPriority(Thread.NORM_PRIORITY + 1);
 407                     thread.setDaemon(true);
 408                     return thread;
 409                 }
 410             };
 411             toolkitThread = AccessController.doPrivileged(action);
 412             toolkitThread.start();
 413         }
 414     }
 415 
 416     public ButtonPeer createButton(Button target) {
 417         ButtonPeer peer = new XButtonPeer(target);
 418         targetCreatedPeer(target, peer);
 419         return peer;
 420     }
 421 
 422     public FramePeer createFrame(Frame target) {
 423         FramePeer peer = new XFramePeer(target);
 424         targetCreatedPeer(target, peer);
 425         return peer;
 426     }
 427 
 428     static void addToWinMap(long window, XBaseWindow xwin)
 429     {
 430         synchronized(winMap) {
 431             winMap.put(Long.valueOf(window),xwin);
 432         }
 433     }
 434 
 435     static void removeFromWinMap(long window, XBaseWindow xwin) {
 436         synchronized(winMap) {
 437             winMap.remove(Long.valueOf(window));
 438         }
 439     }
 440     static XBaseWindow windowToXWindow(long window) {
 441         synchronized(winMap) {
 442             return (XBaseWindow) winMap.get(Long.valueOf(window));
 443         }
 444     }
 445 
 446     static void addEventDispatcher(long window, XEventDispatcher dispatcher) {
 447         synchronized(winToDispatcher) {
 448             Long key = Long.valueOf(window);
 449             Collection dispatchers = (Collection)winToDispatcher.get(key);
 450             if (dispatchers == null) {
 451                 dispatchers = new Vector();
 452                 winToDispatcher.put(key, dispatchers);
 453             }
 454             dispatchers.add(dispatcher);
 455         }
 456     }
 457     static void removeEventDispatcher(long window, XEventDispatcher dispatcher) {
 458         synchronized(winToDispatcher) {
 459             Long key = Long.valueOf(window);
 460             Collection dispatchers = (Collection)winToDispatcher.get(key);
 461             if (dispatchers != null) {
 462                 dispatchers.remove(dispatcher);
 463             }
 464         }
 465     }
 466 
 467     private Point lastCursorPos;
 468 
 469     /**
 470      * Returns whether there is last remembered cursor position.  The
 471      * position is remembered from X mouse events on our peers.  The
 472      * position is stored in <code>p</code>.
 473      * @return true, if there is remembered last cursor position,
 474      * false otherwise
 475      */
 476     boolean getLastCursorPos(Point p) {
 477         awtLock();
 478         try {
 479             if (lastCursorPos == null) {
 480                 return false;
 481             }
 482             p.setLocation(lastCursorPos);
 483             return true;
 484         } finally {
 485             awtUnlock();
 486         }
 487     }
 488 
 489     private void processGlobalMotionEvent(XEvent e) {
 490         // Only our windows guaranteely generate MotionNotify, so we
 491         // should track enter/leave, to catch the moment when to
 492         // switch to XQueryPointer
 493         if (e.get_type() == XConstants.MotionNotify) {
 494             XMotionEvent ev = e.get_xmotion();
 495             awtLock();
 496             try {
 497                 if (lastCursorPos == null) {
 498                     lastCursorPos = new Point(ev.get_x_root(), ev.get_y_root());
 499                 } else {
 500                     lastCursorPos.setLocation(ev.get_x_root(), ev.get_y_root());
 501                 }
 502             } finally {
 503                 awtUnlock();
 504             }
 505         } else if (e.get_type() == XConstants.LeaveNotify) {
 506             // Leave from our window
 507             awtLock();
 508             try {
 509                 lastCursorPos = null;
 510             } finally {
 511                 awtUnlock();
 512             }
 513         } else if (e.get_type() == XConstants.EnterNotify) {
 514             // Entrance into our window
 515             XCrossingEvent ev = e.get_xcrossing();
 516             awtLock();
 517             try {
 518                 if (lastCursorPos == null) {
 519                     lastCursorPos = new Point(ev.get_x_root(), ev.get_y_root());
 520                 } else {
 521                     lastCursorPos.setLocation(ev.get_x_root(), ev.get_y_root());
 522                 }
 523             } finally {
 524                 awtUnlock();
 525             }
 526         }
 527     }
 528 
 529     public interface XEventListener {
 530         public void eventProcessed(XEvent e);
 531     }
 532 
 533     private Collection<XEventListener> listeners = new LinkedList<XEventListener>();
 534 
 535     public void addXEventListener(XEventListener listener) {
 536         synchronized (listeners) {
 537             listeners.add(listener);
 538         }
 539     }
 540 
 541     private void notifyListeners(XEvent xev) {
 542         synchronized (listeners) {
 543             if (listeners.size() == 0) return;
 544 
 545             XEvent copy = xev.clone();
 546             try {
 547                 for (XEventListener listener : listeners) {
 548                     listener.eventProcessed(copy);
 549                 }
 550             } finally {
 551                 copy.dispose();
 552             }
 553         }
 554     }
 555 
 556     private void dispatchEvent(XEvent ev) {
 557         final XAnyEvent xany = ev.get_xany();
 558 
 559         if (windowToXWindow(xany.get_window()) != null &&
 560              (ev.get_type() == XConstants.MotionNotify || ev.get_type() == XConstants.EnterNotify || ev.get_type() == XConstants.LeaveNotify))
 561         {
 562             processGlobalMotionEvent(ev);
 563         }
 564 
 565         if( ev.get_type() == XConstants.MappingNotify ) {
 566             // The 'window' field in this event is unused.
 567             // This application itself does nothing to initiate such an event
 568             // (no calls of XChangeKeyboardMapping etc.).
 569             // SunRay server sends this event to the application once on every
 570             // keyboard (not just layout) change which means, quite seldom.
 571             XlibWrapper.XRefreshKeyboardMapping(ev.pData);
 572             resetKeyboardSniffer();
 573             setupModifierMap();
 574         }
 575         XBaseWindow.dispatchToWindow(ev);
 576 
 577         Collection dispatchers = null;
 578         synchronized(winToDispatcher) {
 579             Long key = Long.valueOf(xany.get_window());
 580             dispatchers = (Collection)winToDispatcher.get(key);
 581             if (dispatchers != null) { // Clone it to avoid synchronization during dispatching
 582                 dispatchers = new Vector(dispatchers);
 583             }
 584         }
 585         if (dispatchers != null) {
 586             Iterator iter = dispatchers.iterator();
 587             while (iter.hasNext()) {
 588                 XEventDispatcher disp = (XEventDispatcher)iter.next();
 589                 disp.dispatchEvent(ev);
 590             }
 591         }
 592         notifyListeners(ev);
 593     }
 594 
 595     static void processException(Throwable thr) {
 596         if (log.isLoggable(PlatformLogger.WARNING)) {
 597             log.warning("Exception on Toolkit thread", thr);
 598         }
 599     }
 600 
 601     static native void awt_toolkit_init();
 602 
 603     public void run() {
 604         awt_toolkit_init();
 605         run(PRIMARY_LOOP);
 606     }
 607 
 608     public void run(boolean loop)
 609     {
 610         XEvent ev = new XEvent();
 611         while(true) {
 612             // Fix for 6829923: we should gracefully handle toolkit thread interruption
 613             if (Thread.currentThread().isInterrupted()) {
 614                 // We expect interruption from the AppContext.dispose() method only.
 615                 // If the thread is interrupted from another place, let's skip it
 616                 // for compatibility reasons. Probably some time later we'll remove
 617                 // the check for AppContext.isDisposed() and will unconditionally
 618                 // break the loop here.
 619                 if (AppContext.getAppContext().isDisposed()) {
 620                     break;
 621                 }
 622             }
 623             awtLock();
 624             try {
 625                 if (loop == SECONDARY_LOOP) {
 626                     // In the secondary loop we may have already aquired awt_lock
 627                     // several times, so waitForEvents() might be unable to release
 628                     // the awt_lock and this causes lock up.
 629                     // For now, we just avoid waitForEvents in the secondary loop.
 630                     if (!XlibWrapper.XNextSecondaryLoopEvent(getDisplay(),ev.pData)) {
 631                         break;
 632                     }
 633                 } else {
 634                     callTimeoutTasks();
 635                     // If no events are queued, waitForEvents() causes calls to
 636                     // awtUnlock(), awtJNI_ThreadYield, poll, awtLock(),
 637                     // so it spends most of its time in poll, without holding the lock.
 638                     while ((XlibWrapper.XEventsQueued(getDisplay(), XConstants.QueuedAfterReading) == 0) &&
 639                            (XlibWrapper.XEventsQueued(getDisplay(), XConstants.QueuedAfterFlush) == 0)) {
 640                         callTimeoutTasks();
 641                         waitForEvents(getNextTaskTime());
 642                     }
 643                     XlibWrapper.XNextEvent(getDisplay(),ev.pData);
 644                 }
 645 
 646                 if (ev.get_type() != XConstants.NoExpose) {
 647                     eventNumber++;
 648                 }
 649                 if (awt_UseXKB_Calls && ev.get_type() ==  awt_XKBBaseEventCode) {
 650                     processXkbChanges(ev);
 651                 }
 652 
 653                 if (XDropTargetEventProcessor.processEvent(ev) ||
 654                     XDragSourceContextPeer.processEvent(ev)) {
 655                     continue;
 656                 }
 657 
 658                 if (eventLog.isLoggable(PlatformLogger.FINER)) {
 659                     eventLog.finer("{0}", ev);
 660                 }
 661 
 662                 // Check if input method consumes the event
 663                 long w = 0;
 664                 if (windowToXWindow(ev.get_xany().get_window()) != null) {
 665                     Component owner =
 666                         XKeyboardFocusManagerPeer.getInstance().getCurrentFocusOwner();
 667                     if (owner != null) {
 668                         XWindow ownerWindow = (XWindow) AWTAccessor.getComponentAccessor().getPeer(owner);
 669                         if (ownerWindow != null) {
 670                             w = ownerWindow.getContentWindow();
 671                         }
 672                     }
 673                 }
 674                 if( keyEventLog.isLoggable(PlatformLogger.FINE) && (ev.get_type() == XConstants.KeyPress || ev.get_type() == XConstants.KeyRelease) ) {
 675                     keyEventLog.fine("before XFilterEvent:"+ev);
 676                 }
 677                 if (XlibWrapper.XFilterEvent(ev.getPData(), w)) {
 678                     continue;
 679                 }
 680                 if( keyEventLog.isLoggable(PlatformLogger.FINE) && (ev.get_type() == XConstants.KeyPress || ev.get_type() == XConstants.KeyRelease) ) {
 681                     keyEventLog.fine("after XFilterEvent:"+ev); // IS THIS CORRECT?
 682                 }
 683 
 684                 dispatchEvent(ev);
 685             } catch (ThreadDeath td) {
 686                 XBaseWindow.ungrabInput();
 687                 return;
 688             } catch (Throwable thr) {
 689                 XBaseWindow.ungrabInput();
 690                 processException(thr);
 691             } finally {
 692                 awtUnlock();
 693             }
 694         }
 695     }
 696 
 697     static {
 698         GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
 699         if (ge instanceof SunGraphicsEnvironment) {
 700             ((SunGraphicsEnvironment)ge).addDisplayChangedListener(
 701                 new DisplayChangedListener() {
 702                     @Override
 703                     public void displayChanged() {
 704                         // 7045370: Reset the cached values
 705                         XToolkit.screenWidth = -1;
 706                         XToolkit.screenHeight = -1;
 707                     }
 708 
 709                     @Override
 710                     public void paletteChanged() {}
 711             });
 712         }
 713     }
 714 
 715     private static void initScreenSize() {
 716         if (screenWidth == -1 || screenHeight == -1) {
 717             awtLock();
 718             try {
 719                 XWindowAttributes pattr = new XWindowAttributes();
 720                 try {
 721                     XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(), XToolkit.getDefaultRootWindow(), pattr.pData);
 722                     screenWidth  = (int) pattr.get_width();
 723                     screenHeight = (int) pattr.get_height();
 724                 } finally {
 725                     pattr.dispose();
 726                 }
 727             } finally {
 728                 awtUnlock();
 729             }
 730         }
 731     }
 732 
 733     static int getDefaultScreenWidth() {
 734         initScreenSize();
 735         return screenWidth;
 736     }
 737 
 738     static int getDefaultScreenHeight() {
 739         initScreenSize();
 740         return screenHeight;
 741     }
 742 
 743     protected int getScreenWidth() {
 744         return getDefaultScreenWidth();
 745     }
 746 
 747     protected int getScreenHeight() {
 748         return getDefaultScreenHeight();
 749     }
 750 
 751     private static Rectangle getWorkArea(long root)
 752     {
 753         XAtom XA_NET_WORKAREA = XAtom.get("_NET_WORKAREA");
 754 
 755         long native_ptr = Native.allocateLongArray(4);
 756         try
 757         {
 758             boolean workareaPresent = XA_NET_WORKAREA.getAtomData(root,
 759                 XAtom.XA_CARDINAL, native_ptr, 4);
 760             if (workareaPresent)
 761             {
 762                 int rootX = (int)Native.getLong(native_ptr, 0);
 763                 int rootY = (int)Native.getLong(native_ptr, 1);
 764                 int rootWidth = (int)Native.getLong(native_ptr, 2);
 765                 int rootHeight = (int)Native.getLong(native_ptr, 3);
 766 
 767                 return new Rectangle(rootX, rootY, rootWidth, rootHeight);
 768             }
 769         }
 770         finally
 771         {
 772             XlibWrapper.unsafe.freeMemory(native_ptr);
 773         }
 774 
 775         return null;
 776     }
 777 
 778     /*
 779      * If we're running in non-Xinerama environment and the current
 780      * window manager supports _NET protocol then the screen insets
 781      * are calculated using _NET_WM_WORKAREA property of the root
 782      * window.
 783      * Otherwise, i. e. if Xinerama is on or _NET_WM_WORKAREA is
 784      * not set, we try to calculate the insets ourselves using
 785      * getScreenInsetsManually method.
 786      */
 787     public Insets getScreenInsets(GraphicsConfiguration gc)
 788     {
 789         XNETProtocol netProto = XWM.getWM().getNETProtocol();
 790         if ((netProto == null) || !netProto.active())
 791         {
 792             return super.getScreenInsets(gc);
 793         }
 794 
 795         XToolkit.awtLock();
 796         try
 797         {
 798             X11GraphicsConfig x11gc = (X11GraphicsConfig)gc;
 799             X11GraphicsDevice x11gd = (X11GraphicsDevice)x11gc.getDevice();
 800             long root = XlibUtil.getRootWindow(x11gd.getScreen());
 801             Rectangle rootBounds = XlibUtil.getWindowGeometry(root);
 802 
 803             X11GraphicsEnvironment x11ge = (X11GraphicsEnvironment)
 804                 GraphicsEnvironment.getLocalGraphicsEnvironment();
 805             if (!x11ge.runningXinerama())
 806             {
 807                 Rectangle workArea = XToolkit.getWorkArea(root);
 808                 if (workArea != null)
 809                 {
 810                     return new Insets(workArea.y,
 811                                       workArea.x,
 812                                       rootBounds.height - workArea.height - workArea.y,
 813                                       rootBounds.width - workArea.width - workArea.x);
 814                 }
 815             }
 816 
 817             return getScreenInsetsManually(root, rootBounds, gc.getBounds());
 818         }
 819         finally
 820         {
 821             XToolkit.awtUnlock();
 822         }
 823     }
 824 
 825     /*
 826      * Manual calculation of screen insets: get all the windows with
 827      * _NET_WM_STRUT/_NET_WM_STRUT_PARTIAL hints and add these
 828      * hints' values to screen insets.
 829      *
 830      * This method should be called under XToolkit.awtLock()
 831      */
 832     private Insets getScreenInsetsManually(long root, Rectangle rootBounds, Rectangle screenBounds)
 833     {
 834         /*
 835          * During the manual calculation of screen insets we iterate
 836          * all the X windows hierarchy starting from root window. This
 837          * constant is the max level inspected in this hierarchy.
 838          * 3 is a heuristic value: I suppose any the toolbar-like
 839          * window is a child of either root or desktop window.
 840          */
 841         final int MAX_NESTED_LEVEL = 3;
 842 
 843         XAtom XA_NET_WM_STRUT = XAtom.get("_NET_WM_STRUT");
 844         XAtom XA_NET_WM_STRUT_PARTIAL = XAtom.get("_NET_WM_STRUT_PARTIAL");
 845 
 846         Insets insets = new Insets(0, 0, 0, 0);
 847 
 848         java.util.List search = new LinkedList();
 849         search.add(root);
 850         search.add(0);
 851         while (!search.isEmpty())
 852         {
 853             long window = (Long)search.remove(0);
 854             int windowLevel = (Integer)search.remove(0);
 855 
 856             /*
 857              * Note that most of the modern window managers unmap
 858              * application window if it is iconified. Thus, any
 859              * _NET_WM_STRUT[_PARTIAL] hints for iconified windows
 860              * are not included to the screen insets.
 861              */
 862             if (XlibUtil.getWindowMapState(window) == XConstants.IsUnmapped)
 863             {
 864                 continue;
 865             }
 866 
 867             long native_ptr = Native.allocateLongArray(4);
 868             try
 869             {
 870                 // first, check if _NET_WM_STRUT or _NET_WM_STRUT_PARTIAL are present
 871                 // if both are set on the window, _NET_WM_STRUT_PARTIAL is used (see _NET spec)
 872                 boolean strutPresent = XA_NET_WM_STRUT_PARTIAL.getAtomData(window, XAtom.XA_CARDINAL, native_ptr, 4);
 873                 if (!strutPresent)
 874                 {
 875                     strutPresent = XA_NET_WM_STRUT.getAtomData(window, XAtom.XA_CARDINAL, native_ptr, 4);
 876                 }
 877                 if (strutPresent)
 878                 {
 879                     // second, verify that window is located on the proper screen
 880                     Rectangle windowBounds = XlibUtil.getWindowGeometry(window);
 881                     if (windowLevel > 1)
 882                     {
 883                         windowBounds = XlibUtil.translateCoordinates(window, root, windowBounds);
 884                     }
 885                     // if _NET_WM_STRUT_PARTIAL is present, we should use its values to detect
 886                     // if the struts area intersects with screenBounds, however some window
 887                     // managers don't set this hint correctly, so we just get intersection with windowBounds
 888                     if (windowBounds != null && windowBounds.intersects(screenBounds))
 889                     {
 890                         insets.left = Math.max((int)Native.getLong(native_ptr, 0), insets.left);
 891                         insets.right = Math.max((int)Native.getLong(native_ptr, 1), insets.right);
 892                         insets.top = Math.max((int)Native.getLong(native_ptr, 2), insets.top);
 893                         insets.bottom = Math.max((int)Native.getLong(native_ptr, 3), insets.bottom);
 894                     }
 895                 }
 896             }
 897             finally
 898             {
 899                 XlibWrapper.unsafe.freeMemory(native_ptr);
 900             }
 901 
 902             if (windowLevel < MAX_NESTED_LEVEL)
 903             {
 904                 Set<Long> children = XlibUtil.getChildWindows(window);
 905                 for (long child : children)
 906                 {
 907                     search.add(child);
 908                     search.add(windowLevel + 1);
 909                 }
 910             }
 911         }
 912 
 913         return insets;
 914     }
 915 
 916     /*
 917      * The current implementation of disabling background erasing for
 918      * canvases is that we don't set any native background color
 919      * (with XSetWindowBackground) for the canvas window. However,
 920      * this color is set in the peer constructor - see
 921      * XWindow.postInit() for details. That's why this method from
 922      * SunToolkit is not overridden in XToolkit: it's too late to
 923      * disable background erasing :(
 924      */
 925     /*
 926     @Override
 927     public void disableBackgroundErase(Canvas canvas) {
 928         XCanvasPeer peer = (XCanvasPeer)canvas.getPeer();
 929         if (peer == null) {
 930             throw new IllegalStateException("Canvas must have a valid peer");
 931         }
 932         peer.disableBackgroundErase();
 933     }
 934     */
 935 
 936     // Need this for XMenuItemPeer.
 937     protected static final Object targetToPeer(Object target) {
 938         Object p=null;
 939         if (target != null && !GraphicsEnvironment.isHeadless()) {
 940             p = specialPeerMap.get(target);
 941         }
 942         if (p != null) return p;
 943         else
 944             return SunToolkit.targetToPeer(target);
 945     }
 946 
 947     // Need this for XMenuItemPeer.
 948     protected static final void targetDisposedPeer(Object target, Object peer) {
 949         SunToolkit.targetDisposedPeer(target, peer);
 950     }
 951 
 952     public RobotPeer createRobot(Robot target, GraphicsDevice screen) {
 953         return new XRobotPeer(screen.getDefaultConfiguration());
 954     }
 955 
 956 
 957   /*
 958      * On X, support for dynamic layout on resizing is governed by the
 959      * window manager.  If the window manager supports it, it happens
 960      * automatically.  The setter method for this property is
 961      * irrelevant on X.
 962      */
 963     public void setDynamicLayout(boolean b) {
 964         dynamicLayoutSetting = b;
 965     }
 966 
 967     protected boolean isDynamicLayoutSet() {
 968         return dynamicLayoutSetting;
 969     }
 970 
 971     /* Called from isDynamicLayoutActive() and from
 972      * lazilyLoadDynamicLayoutSupportedProperty()
 973      */
 974     protected boolean isDynamicLayoutSupported() {
 975         return XWM.getWM().supportsDynamicLayout();
 976     }
 977 
 978     public boolean isDynamicLayoutActive() {
 979         return isDynamicLayoutSupported();
 980     }
 981 
 982 
 983     public FontPeer getFontPeer(String name, int style){
 984         return new XFontPeer(name, style);
 985     }
 986 
 987     public DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException {
 988         return XDragSourceContextPeer.createDragSourceContextPeer(dge);
 989     }
 990 
 991     public <T extends DragGestureRecognizer> T
 992     createDragGestureRecognizer(Class<T> recognizerClass,
 993                     DragSource ds,
 994                     Component c,
 995                     int srcActions,
 996                     DragGestureListener dgl)
 997     {
 998         if (MouseDragGestureRecognizer.class.equals(recognizerClass))
 999             return (T)new XMouseDragGestureRecognizer(ds, c, srcActions, dgl);
1000         else
1001             return null;
1002     }
1003 
1004     public CheckboxMenuItemPeer createCheckboxMenuItem(CheckboxMenuItem target) {
1005         XCheckboxMenuItemPeer peer = new XCheckboxMenuItemPeer(target);
1006         //vb157120: looks like we don't need to map menu items
1007         //in new menus implementation
1008         //targetCreatedPeer(target, peer);
1009         return peer;
1010     }
1011 
1012     public MenuItemPeer createMenuItem(MenuItem target) {
1013         XMenuItemPeer peer = new XMenuItemPeer(target);
1014         //vb157120: looks like we don't need to map menu items
1015         //in new menus implementation
1016         //targetCreatedPeer(target, peer);
1017         return peer;
1018     }
1019 
1020     public TextFieldPeer createTextField(TextField target) {
1021         TextFieldPeer  peer = new XTextFieldPeer(target);
1022         targetCreatedPeer(target, peer);
1023         return peer;
1024     }
1025 
1026     public LabelPeer createLabel(Label target) {
1027         LabelPeer  peer = new XLabelPeer(target);
1028         targetCreatedPeer(target, peer);
1029         return peer;
1030     }
1031 
1032     public ListPeer createList(java.awt.List target) {
1033         ListPeer peer = new XListPeer(target);
1034         targetCreatedPeer(target, peer);
1035         return peer;
1036     }
1037 
1038     public CheckboxPeer createCheckbox(Checkbox target) {
1039         CheckboxPeer peer = new XCheckboxPeer(target);
1040         targetCreatedPeer(target, peer);
1041         return peer;
1042     }
1043 
1044     public ScrollbarPeer createScrollbar(Scrollbar target) {
1045         XScrollbarPeer peer = new XScrollbarPeer(target);
1046         targetCreatedPeer(target, peer);
1047         return peer;
1048     }
1049 
1050     public ScrollPanePeer createScrollPane(ScrollPane target) {
1051         XScrollPanePeer peer = new XScrollPanePeer(target);
1052         targetCreatedPeer(target, peer);
1053         return peer;
1054     }
1055 
1056     public TextAreaPeer createTextArea(TextArea target) {
1057         TextAreaPeer peer = new XTextAreaPeer(target);
1058         targetCreatedPeer(target, peer);
1059         return peer;
1060     }
1061 
1062     public ChoicePeer createChoice(Choice target) {
1063         XChoicePeer peer = new XChoicePeer(target);
1064         targetCreatedPeer(target, peer);
1065         return peer;
1066     }
1067 
1068     public CanvasPeer createCanvas(Canvas target) {
1069         XCanvasPeer peer = (isXEmbedServerRequested() ? new XEmbedCanvasPeer(target) : new XCanvasPeer(target));
1070         targetCreatedPeer(target, peer);
1071         return peer;
1072     }
1073 
1074     public PanelPeer createPanel(Panel target) {
1075         PanelPeer peer = new XPanelPeer(target);
1076         targetCreatedPeer(target, peer);
1077         return peer;
1078     }
1079 
1080     public WindowPeer createWindow(Window target) {
1081         WindowPeer peer = new XWindowPeer(target);
1082         targetCreatedPeer(target, peer);
1083         return peer;
1084     }
1085 
1086     public DialogPeer createDialog(Dialog target) {
1087         DialogPeer peer = new XDialogPeer(target);
1088         targetCreatedPeer(target, peer);
1089         return peer;
1090     }
1091 
1092     private static Boolean sunAwtDisableGtkFileDialogs = null;
1093 
1094     /**
1095      * Returns the value of "sun.awt.disableGtkFileDialogs" property. Default
1096      * value is {@code false}.
1097      */
1098     public synchronized static boolean getSunAwtDisableGtkFileDialogs() {
1099         if (sunAwtDisableGtkFileDialogs == null) {
1100             sunAwtDisableGtkFileDialogs = AccessController.doPrivileged(
1101                                               new GetBooleanAction("sun.awt.disableGtkFileDialogs"));
1102         }
1103         return sunAwtDisableGtkFileDialogs.booleanValue();
1104     }
1105 
1106     public FileDialogPeer createFileDialog(FileDialog target) {
1107         FileDialogPeer peer = null;
1108         // The current GtkFileChooser is available from GTK+ 2.4
1109         if (!getSunAwtDisableGtkFileDialogs() && checkGtkVersion(2, 4, 0)) {
1110             peer = new GtkFileDialogPeer(target);
1111         } else {
1112             peer = new XFileDialogPeer(target);
1113         }
1114         targetCreatedPeer(target, peer);
1115         return peer;
1116     }
1117 
1118     public MenuBarPeer createMenuBar(MenuBar target) {
1119         XMenuBarPeer peer = new XMenuBarPeer(target);
1120         targetCreatedPeer(target, peer);
1121         return peer;
1122     }
1123 
1124     public MenuPeer createMenu(Menu target) {
1125         XMenuPeer peer = new XMenuPeer(target);
1126         //vb157120: looks like we don't need to map menu items
1127         //in new menus implementation
1128         //targetCreatedPeer(target, peer);
1129         return peer;
1130     }
1131 
1132     public PopupMenuPeer createPopupMenu(PopupMenu target) {
1133         XPopupMenuPeer peer = new XPopupMenuPeer(target);
1134         targetCreatedPeer(target, peer);
1135         return peer;
1136     }
1137 
1138     public synchronized MouseInfoPeer getMouseInfoPeer() {
1139         if (xPeer == null) {
1140             xPeer = new XMouseInfoPeer();
1141         }
1142         return xPeer;
1143     }
1144 
1145     public XEmbeddedFramePeer createEmbeddedFrame(XEmbeddedFrame target)
1146     {
1147         XEmbeddedFramePeer peer = new XEmbeddedFramePeer(target);
1148         targetCreatedPeer(target, peer);
1149         return peer;
1150     }
1151 
1152     XEmbedChildProxyPeer createEmbedProxy(XEmbedChildProxy target) {
1153         XEmbedChildProxyPeer peer = new XEmbedChildProxyPeer(target);
1154         targetCreatedPeer(target, peer);
1155         return peer;
1156     }
1157 
1158     public KeyboardFocusManagerPeer getKeyboardFocusManagerPeer() throws HeadlessException {
1159         return XKeyboardFocusManagerPeer.getInstance();
1160     }
1161 
1162     /**
1163      * Returns a new custom cursor.
1164      */
1165     public Cursor createCustomCursor(Image cursor, Point hotSpot, String name)
1166       throws IndexOutOfBoundsException {
1167         return new XCustomCursor(cursor, hotSpot, name);
1168     }
1169 
1170     public TrayIconPeer createTrayIcon(TrayIcon target)
1171       throws HeadlessException, AWTException
1172     {
1173         TrayIconPeer peer = new XTrayIconPeer(target);
1174         targetCreatedPeer(target, peer);
1175         return peer;
1176     }
1177 
1178     public SystemTrayPeer createSystemTray(SystemTray target) throws HeadlessException {
1179         SystemTrayPeer peer = new XSystemTrayPeer(target);
1180         return peer;
1181     }
1182 
1183     public boolean isTraySupported() {
1184         XSystemTrayPeer peer = XSystemTrayPeer.getPeerInstance();
1185         if (peer != null) {
1186             return peer.isAvailable();
1187         }
1188         return false;
1189     }
1190 
1191     /**
1192      * Returns the supported cursor size
1193      */
1194     public Dimension getBestCursorSize(int preferredWidth, int preferredHeight) {
1195         return XCustomCursor.getBestCursorSize(
1196                                                java.lang.Math.max(1,preferredWidth), java.lang.Math.max(1,preferredHeight));
1197     }
1198 
1199 
1200     public int getMaximumCursorColors() {
1201         return 2;  // Black and white.
1202     }
1203 
1204     public Map mapInputMethodHighlight(InputMethodHighlight highlight)     {
1205         return XInputMethod.mapInputMethodHighlight(highlight);
1206     }
1207     @Override
1208     public boolean getLockingKeyState(int key) {
1209         if (! (key == KeyEvent.VK_CAPS_LOCK || key == KeyEvent.VK_NUM_LOCK ||
1210                key == KeyEvent.VK_SCROLL_LOCK || key == KeyEvent.VK_KANA_LOCK)) {
1211             throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
1212         }
1213         awtLock();
1214         try {
1215             return getModifierState( key );
1216         } finally {
1217             awtUnlock();
1218         }
1219     }
1220 
1221     public  Clipboard getSystemClipboard() {
1222         SecurityManager security = System.getSecurityManager();
1223         if (security != null) {
1224             security.checkSystemClipboardAccess();
1225         }
1226         synchronized (this) {
1227             if (clipboard == null) {
1228                 clipboard = new XClipboard("System", "CLIPBOARD");
1229             }
1230         }
1231         return clipboard;
1232     }
1233 
1234     public Clipboard getSystemSelection() {
1235         SecurityManager security = System.getSecurityManager();
1236         if (security != null) {
1237             security.checkSystemClipboardAccess();
1238         }
1239         synchronized (this) {
1240             if (selection == null) {
1241                 selection = new XClipboard("Selection", "PRIMARY");
1242             }
1243         }
1244         return selection;
1245     }
1246 
1247     public void beep() {
1248         awtLock();
1249         try {
1250             XlibWrapper.XBell(getDisplay(), 0);
1251             XlibWrapper.XFlush(getDisplay());
1252         } finally {
1253             awtUnlock();
1254         }
1255     }
1256 
1257     public PrintJob getPrintJob(final Frame frame, final String doctitle,
1258                                 final Properties props) {
1259 
1260         if (frame == null) {
1261             throw new NullPointerException("frame must not be null");
1262         }
1263 
1264         PrintJob2D printJob = new PrintJob2D(frame, doctitle, props);
1265 
1266         if (printJob.printDialog() == false) {
1267             printJob = null;
1268         }
1269         return printJob;
1270     }
1271 
1272     public PrintJob getPrintJob(final Frame frame, final String doctitle,
1273                 final JobAttributes jobAttributes,
1274                 final PageAttributes pageAttributes)
1275     {
1276         if (frame == null) {
1277             throw new NullPointerException("frame must not be null");
1278         }
1279 
1280         PrintJob2D printJob = new PrintJob2D(frame, doctitle,
1281                                              jobAttributes, pageAttributes);
1282 
1283         if (printJob.printDialog() == false) {
1284             printJob = null;
1285         }
1286 
1287         return printJob;
1288     }
1289 
1290     static void XSync() {
1291         awtLock();
1292         try {
1293             XlibWrapper.XSync(getDisplay(),0);
1294         } finally {
1295             awtUnlock();
1296         }
1297     }
1298 
1299     public int getScreenResolution() {
1300         long display = getDisplay();
1301         awtLock();
1302         try {
1303             return (int) ((XlibWrapper.DisplayWidth(display,
1304                 XlibWrapper.DefaultScreen(display)) * 25.4) /
1305                     XlibWrapper.DisplayWidthMM(display,
1306                 XlibWrapper.DefaultScreen(display)));
1307         } finally {
1308             awtUnlock();
1309         }
1310     }
1311 
1312     static native long getDefaultXColormap();
1313     static native long getDefaultScreenData();
1314 
1315     static ColorModel screenmodel;
1316 
1317     static ColorModel getStaticColorModel() {
1318         if (screenmodel == null) {
1319             screenmodel = config.getColorModel ();
1320         }
1321         return screenmodel;
1322     }
1323 
1324     public ColorModel getColorModel() {
1325         return getStaticColorModel();
1326     }
1327 
1328     /**
1329      * Returns a new input method adapter descriptor for native input methods.
1330      */
1331     public InputMethodDescriptor getInputMethodAdapterDescriptor() throws AWTException {
1332         return new XInputMethodDescriptor();
1333     }
1334 
1335     /**
1336      * Returns whether enableInputMethods should be set to true for peered
1337      * TextComponent instances on this platform. True by default.
1338      */
1339     @Override
1340     public boolean enableInputMethodsForTextComponent() {
1341         return true;
1342     }
1343 
1344     static int getMultiClickTime() {
1345         if (awt_multiclick_time == 0) {
1346             initializeMultiClickTime();
1347         }
1348         return awt_multiclick_time;
1349     }
1350     static void initializeMultiClickTime() {
1351         awtLock();
1352         try {
1353             try {
1354                 String multiclick_time_query = XlibWrapper.XGetDefault(XToolkit.getDisplay(), "*", "multiClickTime");
1355                 if (multiclick_time_query != null) {
1356                     awt_multiclick_time = (int)Long.parseLong(multiclick_time_query);
1357                 } else {
1358                     multiclick_time_query = XlibWrapper.XGetDefault(XToolkit.getDisplay(),
1359                                                                     "OpenWindows", "MultiClickTimeout");
1360                     if (multiclick_time_query != null) {
1361                         /* Note: OpenWindows.MultiClickTimeout is in tenths of
1362                            a second, so we need to multiply by 100 to convert to
1363                            milliseconds */
1364                         awt_multiclick_time = (int)Long.parseLong(multiclick_time_query) * 100;
1365                     } else {
1366                         awt_multiclick_time = AWT_MULTICLICK_DEFAULT_TIME;
1367                     }
1368                 }
1369             } catch (NumberFormatException nf) {
1370                 awt_multiclick_time = AWT_MULTICLICK_DEFAULT_TIME;
1371             } catch (NullPointerException npe) {
1372                 awt_multiclick_time = AWT_MULTICLICK_DEFAULT_TIME;
1373             }
1374         } finally {
1375             awtUnlock();
1376         }
1377         if (awt_multiclick_time == 0) {
1378             awt_multiclick_time = AWT_MULTICLICK_DEFAULT_TIME;
1379         }
1380     }
1381 
1382     public boolean isFrameStateSupported(int state)
1383       throws HeadlessException
1384     {
1385         if (state == Frame.NORMAL || state == Frame.ICONIFIED) {
1386             return true;
1387         } else {
1388             return XWM.getWM().supportsExtendedState(state);
1389         }
1390     }
1391 
1392     static void dumpPeers() {
1393         if (log.isLoggable(PlatformLogger.FINE)) {
1394             log.fine("Mapped windows:");
1395             Iterator iter = winMap.entrySet().iterator();
1396             while (iter.hasNext()) {
1397                 Map.Entry entry = (Map.Entry)iter.next();
1398                 log.fine(entry.getKey() + "->" + entry.getValue());
1399                 if (entry.getValue() instanceof XComponentPeer) {
1400                     Component target = (Component)((XComponentPeer)entry.getValue()).getTarget();
1401                     log.fine("\ttarget: " + target);
1402                 }
1403             }
1404 
1405             SunToolkit.dumpPeers(log);
1406 
1407             log.fine("Mapped special peers:");
1408             iter = specialPeerMap.entrySet().iterator();
1409             while (iter.hasNext()) {
1410                 Map.Entry entry = (Map.Entry)iter.next();
1411                 log.fine(entry.getKey() + "->" + entry.getValue());
1412             }
1413 
1414             log.fine("Mapped dispatchers:");
1415             iter = winToDispatcher.entrySet().iterator();
1416             while (iter.hasNext()) {
1417                 Map.Entry entry = (Map.Entry)iter.next();
1418                 log.fine(entry.getKey() + "->" + entry.getValue());
1419             }
1420         }
1421     }
1422 
1423     /* Protected with awt_lock. */
1424     private static boolean initialized;
1425     private static boolean timeStampUpdated;
1426     private static long timeStamp;
1427 
1428     private static final XEventDispatcher timeFetcher =
1429     new XEventDispatcher() {
1430             public void dispatchEvent(XEvent ev) {
1431                 switch (ev.get_type()) {
1432                   case XConstants.PropertyNotify:
1433                       XPropertyEvent xpe = ev.get_xproperty();
1434 
1435                       awtLock();
1436                       try {
1437                           timeStamp = xpe.get_time();
1438                           timeStampUpdated = true;
1439                           awtLockNotifyAll();
1440                       } finally {
1441                           awtUnlock();
1442                       }
1443 
1444                       break;
1445                 }
1446             }
1447         };
1448 
1449     private static XAtom _XA_JAVA_TIME_PROPERTY_ATOM;
1450 
1451     static long getCurrentServerTime() {
1452         awtLock();
1453         try {
1454             try {
1455                 if (!initialized) {
1456                     XToolkit.addEventDispatcher(XBaseWindow.getXAWTRootWindow().getWindow(),
1457                                                 timeFetcher);
1458                     _XA_JAVA_TIME_PROPERTY_ATOM = XAtom.get("_SUNW_JAVA_AWT_TIME");
1459                     initialized = true;
1460                 }
1461                 timeStampUpdated = false;
1462                 XlibWrapper.XChangeProperty(XToolkit.getDisplay(),
1463                                             XBaseWindow.getXAWTRootWindow().getWindow(),
1464                                             _XA_JAVA_TIME_PROPERTY_ATOM.getAtom(), XAtom.XA_ATOM, 32,
1465                                             XConstants.PropModeAppend,
1466                                             0, 0);
1467                 XlibWrapper.XFlush(XToolkit.getDisplay());
1468 
1469                 if (isToolkitThread()) {
1470                     XEvent event = new XEvent();
1471                     try {
1472                         XlibWrapper.XWindowEvent(XToolkit.getDisplay(),
1473                                                  XBaseWindow.getXAWTRootWindow().getWindow(),
1474                                                  XConstants.PropertyChangeMask,
1475                                                  event.pData);
1476                         timeFetcher.dispatchEvent(event);
1477                     }
1478                     finally {
1479                         event.dispose();
1480                     }
1481                 }
1482                 else {
1483                     while (!timeStampUpdated) {
1484                         awtLockWait();
1485                     }
1486                 }
1487             } catch (InterruptedException ie) {
1488             // Note: the returned timeStamp can be incorrect in this case.
1489                 if (log.isLoggable(PlatformLogger.FINE)) log.fine("Catched exception, timeStamp may not be correct (ie = " + ie + ")");
1490             }
1491         } finally {
1492             awtUnlock();
1493         }
1494         return timeStamp;
1495     }
1496     protected void initializeDesktopProperties() {
1497         desktopProperties.put("DnD.Autoscroll.initialDelay",
1498                               Integer.valueOf(50));
1499         desktopProperties.put("DnD.Autoscroll.interval",
1500                               Integer.valueOf(50));
1501         desktopProperties.put("DnD.Autoscroll.cursorHysteresis",
1502                               Integer.valueOf(5));
1503         desktopProperties.put("Shell.shellFolderManager",
1504                               "sun.awt.shell.ShellFolderManager");
1505         // Don't want to call getMultiClickTime() if we are headless
1506         if (!GraphicsEnvironment.isHeadless()) {
1507             desktopProperties.put("awt.multiClickInterval",
1508                                   Integer.valueOf(getMultiClickTime()));
1509             desktopProperties.put("awt.mouse.numButtons",
1510                                   Integer.valueOf(getNumberOfButtons()));
1511         }
1512     }
1513 
1514     /**
1515      * This method runs through the XPointer and XExtendedPointer array.
1516      * XExtendedPointer has priority because on some systems XPointer
1517      * (which is assigned to the virtual pointer) reports the maximum
1518      * capabilities of the mouse pointer (i.e. 32 physical buttons).
1519      */
1520     private native int getNumberOfButtonsImpl();
1521 
1522     @Override
1523     public int getNumberOfButtons(){
1524         awtLock();
1525         try {
1526             if (numberOfButtons == 0) {
1527                 numberOfButtons = getNumberOfButtonsImpl();
1528                 numberOfButtons = (numberOfButtons > MAX_BUTTONS_SUPPORTED)? MAX_BUTTONS_SUPPORTED : numberOfButtons;
1529                 //4th and 5th buttons are for wheel and shouldn't be reported as buttons.
1530                 //If we have more than 3 physical buttons and a wheel, we report N-2 buttons.
1531                 //If we have 3 physical buttons and a wheel, we report 3 buttons.
1532                 //If we have 1,2,3 physical buttons, we report it as is i.e. 1,2 or 3 respectively.
1533                 if (numberOfButtons >=5) {
1534                     numberOfButtons -= 2;
1535                 } else if (numberOfButtons == 4 || numberOfButtons ==5){
1536                     numberOfButtons = 3;
1537                 }
1538             }
1539             //Assume don't have to re-query the number again and again.
1540             return numberOfButtons;
1541         } finally {
1542             awtUnlock();
1543         }
1544     }
1545 
1546     static int getNumberOfButtonsForMask() {
1547         return Math.min(XConstants.MAX_BUTTONS, ((SunToolkit) (Toolkit.getDefaultToolkit())).getNumberOfButtons());
1548     }
1549 
1550     private final static String prefix  = "DnD.Cursor.";
1551     private final static String postfix = ".32x32";
1552     private static final String dndPrefix  = "DnD.";
1553 
1554     protected Object lazilyLoadDesktopProperty(String name) {
1555         if (name.startsWith(prefix)) {
1556             String cursorName = name.substring(prefix.length(), name.length()) + postfix;
1557 
1558             try {
1559                 return Cursor.getSystemCustomCursor(cursorName);
1560             } catch (AWTException awte) {
1561                 throw new RuntimeException("cannot load system cursor: " + cursorName, awte);
1562             }
1563         }
1564 
1565         if (name.equals("awt.dynamicLayoutSupported")) {
1566             return  Boolean.valueOf(isDynamicLayoutSupported());
1567         }
1568 
1569         if (initXSettingsIfNeeded(name)) {
1570             return desktopProperties.get(name);
1571         }
1572 
1573         return super.lazilyLoadDesktopProperty(name);
1574     }
1575 
1576     public synchronized void addPropertyChangeListener(String name, PropertyChangeListener pcl) {
1577         if (name == null) {
1578             // See JavaDoc for the Toolkit.addPropertyChangeListener() method
1579             return;
1580         }
1581         initXSettingsIfNeeded(name);
1582         super.addPropertyChangeListener(name, pcl);
1583     }
1584 
1585     /**
1586      * Initializes XAWTXSettings if a property for a given property name is provided by
1587      * XSettings and they are not initialized yet.
1588      *
1589      * @return true if the method has initialized XAWTXSettings.
1590      */
1591     private boolean initXSettingsIfNeeded(final String propName) {
1592         if (!loadedXSettings &&
1593             (propName.startsWith("gnome.") ||
1594              propName.equals(SunToolkit.DESKTOPFONTHINTS) ||
1595              propName.startsWith(dndPrefix)))
1596         {
1597             loadedXSettings = true;
1598             if (!GraphicsEnvironment.isHeadless()) {
1599                 loadXSettings();
1600                 /* If no desktop font hint could be retrieved, check for
1601                  * KDE running KWin and retrieve settings from fontconfig.
1602                  * If that isn't found let SunToolkit will see if there's a
1603                  * system property set by a user.
1604                  */
1605                 if (desktopProperties.get(SunToolkit.DESKTOPFONTHINTS) == null) {
1606                     if (XWM.isKDE2()) {
1607                         Object hint = fcManager.getFontConfigAAHint();
1608                         if (hint != null) {
1609                             /* set the fontconfig/KDE property so that
1610                              * getDesktopHints() below will see it
1611                              * and set the public property.
1612                              */
1613                             desktopProperties.put(UNIXToolkit.FONTCONFIGAAHINT,
1614                                                   hint);
1615                         }
1616                     }
1617                     desktopProperties.put(SunToolkit.DESKTOPFONTHINTS,
1618                                           SunToolkit.getDesktopFontHints());
1619                 }
1620 
1621                 return true;
1622             }
1623         }
1624         return false;
1625     }
1626 
1627     private void loadXSettings() {
1628        xs = new XAWTXSettings();
1629     }
1630 
1631     /**
1632      * Callback from the native side indicating some, or all, of the
1633      * desktop properties have changed and need to be reloaded.
1634      * <code>data</code> is the byte array directly from the x server and
1635      * may be in little endian format.
1636      * <p>
1637      * NB: This could be called from any thread if triggered by
1638      * <code>loadXSettings</code>.  It is called from the System EDT
1639      * if triggered by an XSETTINGS change.
1640      */
1641     void parseXSettings(int screen_XXX_ignored,Map updatedSettings) {
1642 
1643         if (updatedSettings == null || updatedSettings.isEmpty()) {
1644             return;
1645         }
1646 
1647         Iterator i = updatedSettings.entrySet().iterator();
1648         while (i.hasNext()) {
1649             Map.Entry e = (Map.Entry)i.next();
1650             String name = (String)e.getKey();
1651 
1652             name = "gnome." + name;
1653             setDesktopProperty(name, e.getValue());
1654             log.fine("name = " + name + " value = " + e.getValue());
1655 
1656             // XXX: we probably want to do something smarter.  In
1657             // particular, "Net" properties are of interest to the
1658             // "core" AWT itself.  E.g.
1659             //
1660             // Net/DndDragThreshold -> ???
1661             // Net/DoubleClickTime  -> awt.multiClickInterval
1662         }
1663 
1664         setDesktopProperty(SunToolkit.DESKTOPFONTHINTS,
1665                            SunToolkit.getDesktopFontHints());
1666 
1667         Integer dragThreshold = null;
1668         synchronized (this) {
1669             dragThreshold = (Integer)desktopProperties.get("gnome.Net/DndDragThreshold");
1670         }
1671         if (dragThreshold != null) {
1672             setDesktopProperty("DnD.gestureMotionThreshold", dragThreshold);
1673         }
1674 
1675     }
1676 
1677 
1678 
1679     static int altMask;
1680     static int metaMask;
1681     static int numLockMask;
1682     static int modeSwitchMask;
1683     static int modLockIsShiftLock;
1684 
1685     /* Like XKeysymToKeycode, but ensures that keysym is the primary
1686     * symbol on the keycode returned.  Returns zero otherwise.
1687     */
1688     static int keysymToPrimaryKeycode(long sym) {
1689         awtLock();
1690         try {
1691             int code = XlibWrapper.XKeysymToKeycode(getDisplay(), sym);
1692             if (code == 0) {
1693                 return 0;
1694             }
1695             long primary = XlibWrapper.XKeycodeToKeysym(getDisplay(), code, 0);
1696             if (sym != primary) {
1697                 return 0;
1698             }
1699             return code;
1700         } finally {
1701             awtUnlock();
1702         }
1703     }
1704     static boolean getModifierState( int jkc ) {
1705         int iKeyMask = 0;
1706         long ks = XKeysym.javaKeycode2Keysym( jkc );
1707         int  kc = XlibWrapper.XKeysymToKeycode(getDisplay(), ks);
1708         if (kc == 0) {
1709             return false;
1710         }
1711         awtLock();
1712         try {
1713             XModifierKeymap modmap = new XModifierKeymap(
1714                  XlibWrapper.XGetModifierMapping(getDisplay()));
1715 
1716             int nkeys = modmap.get_max_keypermod();
1717 
1718             long map_ptr = modmap.get_modifiermap();
1719             for( int k = 0; k < 8; k++ ) {
1720                 for (int i = 0; i < nkeys; ++i) {
1721                     int keycode = Native.getUByte(map_ptr, k * nkeys + i);
1722                     if (keycode == 0) {
1723                         continue; // ignore zero keycode
1724                     }
1725                     if (kc == keycode) {
1726                         iKeyMask = 1 << k;
1727                         break;
1728                     }
1729                 }
1730                 if( iKeyMask != 0 ) {
1731                     break;
1732                 }
1733             }
1734             XlibWrapper.XFreeModifiermap(modmap.pData);
1735             if (iKeyMask == 0 ) {
1736                 return false;
1737             }
1738             // Now we know to which modifier is assigned the keycode
1739             // correspondent to the keysym correspondent to the java
1740             // keycode. We are going to check a state of this modifier.
1741             // If a modifier is a weird one, we cannot help it.
1742             long window = 0;
1743             try{
1744                 // get any application window
1745                 window = ((Long)(winMap.firstKey())).longValue();
1746             }catch(NoSuchElementException nex) {
1747                 // get root window
1748                 window = getDefaultRootWindow();
1749             }
1750             boolean res = XlibWrapper.XQueryPointer(getDisplay(), window,
1751                                             XlibWrapper.larg1, //root
1752                                             XlibWrapper.larg2, //child
1753                                             XlibWrapper.larg3, //root_x
1754                                             XlibWrapper.larg4, //root_y
1755                                             XlibWrapper.larg5, //child_x
1756                                             XlibWrapper.larg6, //child_y
1757                                             XlibWrapper.larg7);//mask
1758             int mask = Native.getInt(XlibWrapper.larg7);
1759             return ((mask & iKeyMask) != 0);
1760         } finally {
1761             awtUnlock();
1762         }
1763     }
1764 
1765     /* Assign meaning - alt, meta, etc. - to X modifiers mod1 ... mod5.
1766      * Only consider primary symbols on keycodes attached to modifiers.
1767      */
1768     static void setupModifierMap() {
1769         final int metaL = keysymToPrimaryKeycode(XKeySymConstants.XK_Meta_L);
1770         final int metaR = keysymToPrimaryKeycode(XKeySymConstants.XK_Meta_R);
1771         final int altL = keysymToPrimaryKeycode(XKeySymConstants.XK_Alt_L);
1772         final int altR = keysymToPrimaryKeycode(XKeySymConstants.XK_Alt_R);
1773         final int numLock = keysymToPrimaryKeycode(XKeySymConstants.XK_Num_Lock);
1774         final int modeSwitch = keysymToPrimaryKeycode(XKeySymConstants.XK_Mode_switch);
1775         final int shiftLock = keysymToPrimaryKeycode(XKeySymConstants.XK_Shift_Lock);
1776         final int capsLock  = keysymToPrimaryKeycode(XKeySymConstants.XK_Caps_Lock);
1777 
1778         final int modmask[] = { XConstants.ShiftMask, XConstants.LockMask, XConstants.ControlMask, XConstants.Mod1Mask,
1779             XConstants.Mod2Mask, XConstants.Mod3Mask, XConstants.Mod4Mask, XConstants.Mod5Mask };
1780 
1781         log.fine("In setupModifierMap");
1782         awtLock();
1783         try {
1784             XModifierKeymap modmap = new XModifierKeymap(
1785                  XlibWrapper.XGetModifierMapping(getDisplay()));
1786 
1787             int nkeys = modmap.get_max_keypermod();
1788 
1789             long map_ptr = modmap.get_modifiermap();
1790 
1791             for (int modn = XConstants.Mod1MapIndex;
1792                  modn <= XConstants.Mod5MapIndex;
1793                  ++modn)
1794             {
1795                 for (int i = 0; i < nkeys; ++i) {
1796                     /* for each keycode attached to this modifier */
1797                     int keycode = Native.getUByte(map_ptr, modn * nkeys + i);
1798 
1799                     if (keycode == 0) {
1800                         break;
1801                     }
1802                     if (metaMask == 0 &&
1803                         (keycode == metaL || keycode == metaR))
1804                     {
1805                         metaMask = modmask[modn];
1806                         break;
1807                     }
1808                     if (altMask == 0 && (keycode == altL || keycode == altR)) {
1809                         altMask = modmask[modn];
1810                         break;
1811                     }
1812                     if (numLockMask == 0 && keycode == numLock) {
1813                         numLockMask = modmask[modn];
1814                         break;
1815                     }
1816                     if (modeSwitchMask == 0 && keycode == modeSwitch) {
1817                         modeSwitchMask = modmask[modn];
1818                         break;
1819                     }
1820                     continue;
1821                 }
1822             }
1823             modLockIsShiftLock = 0;
1824             for (int j = 0; j < nkeys; ++j) {
1825                 int keycode = Native.getUByte(map_ptr, XConstants.LockMapIndex * nkeys + j);
1826                 if (keycode == 0) {
1827                     break;
1828                 }
1829                 if (keycode == shiftLock) {
1830                     modLockIsShiftLock = 1;
1831                     break;
1832                 }
1833                 if (keycode == capsLock) {
1834                     break;
1835                 }
1836             }
1837             XlibWrapper.XFreeModifiermap(modmap.pData);
1838         } finally {
1839             awtUnlock();
1840         }
1841         if (log.isLoggable(PlatformLogger.FINE)) {
1842             log.fine("metaMask = " + metaMask);
1843             log.fine("altMask = " + altMask);
1844             log.fine("numLockMask = " + numLockMask);
1845             log.fine("modeSwitchMask = " + modeSwitchMask);
1846             log.fine("modLockIsShiftLock = " + modLockIsShiftLock);
1847         }
1848     }
1849 
1850 
1851     private static SortedMap timeoutTasks;
1852 
1853     /**
1854      * Removed the task from the list of waiting-to-be called tasks.
1855      * If the task has been scheduled several times removes only first one.
1856      */
1857     static void remove(Runnable task) {
1858         if (task == null) {
1859             throw new NullPointerException("task is null");
1860         }
1861         awtLock();
1862         try {
1863             if (timeoutTaskLog.isLoggable(PlatformLogger.FINER)) {
1864                 timeoutTaskLog.finer("Removing task " + task);
1865             }
1866             if (timeoutTasks == null) {
1867                 if (timeoutTaskLog.isLoggable(PlatformLogger.FINER)) {
1868                     timeoutTaskLog.finer("Task is not scheduled");
1869                 }
1870                 return;
1871             }
1872             Collection values = timeoutTasks.values();
1873             Iterator iter = values.iterator();
1874             while (iter.hasNext()) {
1875                 java.util.List list = (java.util.List)iter.next();
1876                 boolean removed = false;
1877                 if (list.contains(task)) {
1878                     list.remove(task);
1879                     if (list.isEmpty()) {
1880                         iter.remove();
1881                     }
1882                     break;
1883                 }
1884             }
1885         } finally {
1886             awtUnlock();
1887         }
1888     }
1889 
1890     static native void wakeup_poll();
1891 
1892     /**
1893      * Registers a Runnable which <code>run()</code> method will be called
1894      * once on the toolkit thread when a specified interval of time elapses.
1895      *
1896      * @param task a Runnable which <code>run</code> method will be called
1897      *        on the toolkit thread when <code>interval</code> milliseconds
1898      *        elapse
1899      * @param interval an interal in milliseconds
1900      *
1901      * @throws NullPointerException if <code>task</code> is <code>null</code>
1902      * @throws IllegalArgumentException if <code>interval</code> is not positive
1903      */
1904     static void schedule(Runnable task, long interval) {
1905         if (task == null) {
1906             throw new NullPointerException("task is null");
1907         }
1908         if (interval <= 0) {
1909             throw new IllegalArgumentException("interval " + interval + " is not positive");
1910         }
1911 
1912         awtLock();
1913         try {
1914             if (timeoutTaskLog.isLoggable(PlatformLogger.FINER)) {
1915                 timeoutTaskLog.finer("XToolkit.schedule(): current time={0}" +
1916                                      ";  interval={1}" +
1917                                      ";  task being added={2}" + ";  tasks before addition={3}",
1918                                      Long.valueOf(System.currentTimeMillis()), Long.valueOf(interval), task, timeoutTasks);
1919             }
1920 
1921             if (timeoutTasks == null) {
1922                 timeoutTasks = new TreeMap();
1923             }
1924 
1925             Long time = Long.valueOf(System.currentTimeMillis() + interval);
1926             java.util.List tasks = (java.util.List)timeoutTasks.get(time);
1927             if (tasks == null) {
1928                 tasks = new ArrayList(1);
1929                 timeoutTasks.put(time, tasks);
1930             }
1931             tasks.add(task);
1932 
1933 
1934             if (timeoutTasks.get(timeoutTasks.firstKey()) == tasks && tasks.size() == 1) {
1935                 // Added task became first task - poll won't know
1936                 // about it so we need to wake it up
1937                 wakeup_poll();
1938             }
1939         }  finally {
1940             awtUnlock();
1941         }
1942     }
1943 
1944     private long getNextTaskTime() {
1945         awtLock();
1946         try {
1947             if (timeoutTasks == null || timeoutTasks.isEmpty()) {
1948                 return -1L;
1949             }
1950             return (Long)timeoutTasks.firstKey();
1951         } finally {
1952             awtUnlock();
1953         }
1954     }
1955 
1956     /**
1957      * Executes mature timeout tasks registered with schedule().
1958      * Called from run() under awtLock.
1959      */
1960     private static void callTimeoutTasks() {
1961         if (timeoutTaskLog.isLoggable(PlatformLogger.FINER)) {
1962             timeoutTaskLog.finer("XToolkit.callTimeoutTasks(): current time={0}" +
1963                                  ";  tasks={1}", Long.valueOf(System.currentTimeMillis()), timeoutTasks);
1964         }
1965 
1966         if (timeoutTasks == null || timeoutTasks.isEmpty()) {
1967             return;
1968         }
1969 
1970         Long currentTime = Long.valueOf(System.currentTimeMillis());
1971         Long time = (Long)timeoutTasks.firstKey();
1972 
1973         while (time.compareTo(currentTime) <= 0) {
1974             java.util.List tasks = (java.util.List)timeoutTasks.remove(time);
1975 
1976             for (Iterator iter = tasks.iterator(); iter.hasNext();) {
1977                 Runnable task = (Runnable)iter.next();
1978 
1979                 if (timeoutTaskLog.isLoggable(PlatformLogger.FINER)) {
1980                     timeoutTaskLog.finer("XToolkit.callTimeoutTasks(): current time={0}" +
1981                                          ";  about to run task={1}", Long.valueOf(currentTime), task);
1982                 }
1983 
1984                 try {
1985                     task.run();
1986                 } catch (ThreadDeath td) {
1987                     throw td;
1988                 } catch (Throwable thr) {
1989                     processException(thr);
1990                 }
1991             }
1992 
1993             if (timeoutTasks.isEmpty()) {
1994                 break;
1995             }
1996             time = (Long)timeoutTasks.firstKey();
1997         }
1998     }
1999 
2000     static long getAwtDefaultFg() {
2001         return awt_defaultFg;
2002     }
2003 
2004     static boolean isLeftMouseButton(MouseEvent me) {
2005         switch (me.getID()) {
2006           case MouseEvent.MOUSE_PRESSED:
2007           case MouseEvent.MOUSE_RELEASED:
2008               return (me.getButton() == MouseEvent.BUTTON1);
2009           case MouseEvent.MOUSE_ENTERED:
2010           case MouseEvent.MOUSE_EXITED:
2011           case MouseEvent.MOUSE_CLICKED:
2012           case MouseEvent.MOUSE_DRAGGED:
2013               return ((me.getModifiersEx() & InputEvent.BUTTON1_DOWN_MASK) != 0);
2014         }
2015         return false;
2016     }
2017 
2018     static boolean isRightMouseButton(MouseEvent me) {
2019         int numButtons = ((Integer)getDefaultToolkit().getDesktopProperty("awt.mouse.numButtons")).intValue();
2020         switch (me.getID()) {
2021           case MouseEvent.MOUSE_PRESSED:
2022           case MouseEvent.MOUSE_RELEASED:
2023               return ((numButtons == 2 && me.getButton() == MouseEvent.BUTTON2) ||
2024                        (numButtons > 2 && me.getButton() == MouseEvent.BUTTON3));
2025           case MouseEvent.MOUSE_ENTERED:
2026           case MouseEvent.MOUSE_EXITED:
2027           case MouseEvent.MOUSE_CLICKED:
2028           case MouseEvent.MOUSE_DRAGGED:
2029               return ((numButtons == 2 && (me.getModifiersEx() & InputEvent.BUTTON2_DOWN_MASK) != 0) ||
2030                       (numButtons > 2 && (me.getModifiersEx() & InputEvent.BUTTON3_DOWN_MASK) != 0));
2031         }
2032         return false;
2033     }
2034 
2035     static long reset_time_utc;
2036     static final long WRAP_TIME_MILLIS = 0x00000000FFFFFFFFL;
2037 
2038     /*
2039      * This function converts between the X server time (number of milliseconds
2040      * since the last server reset) and the UTC time for the 'when' field of an
2041      * InputEvent (or another event type with a timestamp).
2042      */
2043     static long nowMillisUTC_offset(long server_offset) {
2044         // ported from awt_util.c
2045         /*
2046          * Because Time is of type 'unsigned long', it is possible that Time will
2047          * never wrap when using 64-bit Xlib. However, if a 64-bit client
2048          * connects to a 32-bit server, I suspect the values will still wrap. So
2049          * we should not attempt to remove the wrap checking even if _LP64 is
2050          * true.
2051          */
2052 
2053         long current_time_utc = System.currentTimeMillis();
2054         if (log.isLoggable(PlatformLogger.FINER)) {
2055             log.finer("reset_time=" + reset_time_utc + ", current_time=" + current_time_utc
2056                       + ", server_offset=" + server_offset + ", wrap_time=" + WRAP_TIME_MILLIS);
2057         }
2058 
2059         if ((current_time_utc - reset_time_utc) > WRAP_TIME_MILLIS) {
2060             reset_time_utc = System.currentTimeMillis() - getCurrentServerTime();
2061         }
2062 
2063         if (log.isLoggable(PlatformLogger.FINER)) {
2064             log.finer("result = " + (reset_time_utc + server_offset));
2065         }
2066         return reset_time_utc + server_offset;
2067     }
2068 
2069     /**
2070      * @see sun.awt.SunToolkit#needsXEmbedImpl
2071      */
2072     protected boolean needsXEmbedImpl() {
2073         // XToolkit implements supports for XEmbed-client protocol and
2074         // requires the supports from the embedding host for it to work.
2075         return true;
2076     }
2077 
2078     public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) {
2079         return (modalityType == null) ||
2080                (modalityType == Dialog.ModalityType.MODELESS) ||
2081                (modalityType == Dialog.ModalityType.DOCUMENT_MODAL) ||
2082                (modalityType == Dialog.ModalityType.APPLICATION_MODAL) ||
2083                (modalityType == Dialog.ModalityType.TOOLKIT_MODAL);
2084     }
2085 
2086     public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType) {
2087         return (exclusionType == null) ||
2088                (exclusionType == Dialog.ModalExclusionType.NO_EXCLUDE) ||
2089                (exclusionType == Dialog.ModalExclusionType.APPLICATION_EXCLUDE) ||
2090                (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE);
2091     }
2092 
2093     static EventQueue getEventQueue(Object target) {
2094         AppContext appContext = targetToAppContext(target);
2095         if (appContext != null) {
2096             return (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY);
2097         }
2098         return null;
2099     }
2100 
2101     static void removeSourceEvents(EventQueue queue,
2102                                    Object source,
2103                                    boolean removeAllEvents) {
2104         AWTAccessor.getEventQueueAccessor()
2105             .removeSourceEvents(queue, source, removeAllEvents);
2106     }
2107 
2108     public boolean isAlwaysOnTopSupported() {
2109         for (XLayerProtocol proto : XWM.getWM().getProtocols(XLayerProtocol.class)) {
2110             if (proto.supportsLayer(XLayerProtocol.LAYER_ALWAYS_ON_TOP)) {
2111                 return true;
2112             }
2113         }
2114         return false;
2115     }
2116 
2117     public boolean useBufferPerWindow() {
2118         return XToolkit.getBackingStoreType() == XConstants.NotUseful;
2119     }
2120 
2121     /**
2122      * Returns one of XConstants: NotUseful, WhenMapped or Always.
2123      * If backing store is not available on at least one screen, or
2124      * java2d uses DGA(which conflicts with backing store) on at least one screen,
2125      * or the string system property "sun.awt.backingStore" is neither "Always"
2126      * nor "WhenMapped", then the method returns XConstants.NotUseful.
2127      * Otherwise, if the system property "sun.awt.backingStore" is "WhenMapped",
2128      * then the method returns XConstants.WhenMapped.
2129      * Otherwise (i.e., if the system property "sun.awt.backingStore" is "Always"),
2130      * the method returns XConstants.Always.
2131      */
2132     static int getBackingStoreType() {
2133         return backingStoreType;
2134     }
2135 
2136     private static void setBackingStoreType() {
2137         String prop = (String)AccessController.doPrivileged(
2138                 new sun.security.action.GetPropertyAction("sun.awt.backingStore"));
2139 
2140         if (prop == null) {
2141             backingStoreType = XConstants.NotUseful;
2142             if (backingStoreLog.isLoggable(PlatformLogger.CONFIG)) {
2143                 backingStoreLog.config("The system property sun.awt.backingStore is not set" +
2144                                        ", by default backingStore=NotUseful");
2145             }
2146             return;
2147         }
2148 
2149         if (backingStoreLog.isLoggable(PlatformLogger.CONFIG)) {
2150             backingStoreLog.config("The system property sun.awt.backingStore is " + prop);
2151         }
2152         prop = prop.toLowerCase();
2153         if (prop.equals("always")) {
2154             backingStoreType = XConstants.Always;
2155         } else if (prop.equals("whenmapped")) {
2156             backingStoreType = XConstants.WhenMapped;
2157         } else {
2158             backingStoreType = XConstants.NotUseful;
2159         }
2160 
2161         if (backingStoreLog.isLoggable(PlatformLogger.CONFIG)) {
2162             backingStoreLog.config("backingStore(as provided by the system property)=" +
2163                                    ( backingStoreType == XConstants.NotUseful ? "NotUseful"
2164                                      : backingStoreType == XConstants.WhenMapped ?
2165                                      "WhenMapped" : "Always") );
2166         }
2167 
2168         if (sun.java2d.x11.X11SurfaceData.isDgaAvailable()) {
2169             backingStoreType = XConstants.NotUseful;
2170 
2171             if (backingStoreLog.isLoggable(PlatformLogger.CONFIG)) {
2172                 backingStoreLog.config("DGA is available, backingStore=NotUseful");
2173             }
2174 
2175             return;
2176         }
2177 
2178         awtLock();
2179         try {
2180             int screenCount = XlibWrapper.ScreenCount(getDisplay());
2181             for (int i = 0; i < screenCount; i++) {
2182                 if (XlibWrapper.DoesBackingStore(XlibWrapper.ScreenOfDisplay(getDisplay(), i))
2183                         == XConstants.NotUseful) {
2184                     backingStoreType = XConstants.NotUseful;
2185 
2186                     if (backingStoreLog.isLoggable(PlatformLogger.CONFIG)) {
2187                         backingStoreLog.config("Backing store is not available on the screen " +
2188                                                i + ", backingStore=NotUseful");
2189                     }
2190 
2191                     return;
2192                 }
2193             }
2194         } finally {
2195             awtUnlock();
2196         }
2197     }
2198 
2199     /**
2200      * One of XConstants: NotUseful, WhenMapped or Always.
2201      */
2202     private static int backingStoreType;
2203 
2204     static final int XSUN_KP_BEHAVIOR = 1;
2205     static final int XORG_KP_BEHAVIOR = 2;
2206     static final int    IS_SUN_KEYBOARD = 1;
2207     static final int IS_NONSUN_KEYBOARD = 2;
2208     static final int    IS_KANA_KEYBOARD = 1;
2209     static final int IS_NONKANA_KEYBOARD = 2;
2210 
2211 
2212     static int     awt_IsXsunKPBehavior = 0;
2213     static boolean awt_UseXKB         = false;
2214     static boolean awt_UseXKB_Calls   = false;
2215     static int     awt_XKBBaseEventCode = 0;
2216     static int     awt_XKBEffectiveGroup = 0; // so far, I don't use it leaving all calculations
2217                                               // to XkbTranslateKeyCode
2218     static long    awt_XKBDescPtr     = 0;
2219 
2220     /**
2221      * Check for Xsun convention regarding numpad keys.
2222      * Xsun and some other servers (i.e. derived from Xsun)
2223      * under certain conditions process numpad keys unlike Xorg.
2224      */
2225     static boolean isXsunKPBehavior() {
2226         awtLock();
2227         try {
2228             if( awt_IsXsunKPBehavior == 0 ) {
2229                 if( XlibWrapper.IsXsunKPBehavior(getDisplay()) ) {
2230                     awt_IsXsunKPBehavior = XSUN_KP_BEHAVIOR;
2231                 }else{
2232                     awt_IsXsunKPBehavior = XORG_KP_BEHAVIOR;
2233                 }
2234             }
2235             return awt_IsXsunKPBehavior == XSUN_KP_BEHAVIOR ? true : false;
2236         } finally {
2237             awtUnlock();
2238         }
2239     }
2240 
2241     static int  sunOrNotKeyboard = 0;
2242     static int kanaOrNotKeyboard = 0;
2243     static void resetKeyboardSniffer() {
2244         sunOrNotKeyboard  = 0;
2245         kanaOrNotKeyboard = 0;
2246     }
2247     static boolean isSunKeyboard() {
2248         if( sunOrNotKeyboard == 0 ) {
2249             if( XlibWrapper.IsSunKeyboard( getDisplay() )) {
2250                 sunOrNotKeyboard = IS_SUN_KEYBOARD;
2251             }else{
2252                 sunOrNotKeyboard = IS_NONSUN_KEYBOARD;
2253             }
2254         }
2255         return (sunOrNotKeyboard == IS_SUN_KEYBOARD);
2256     }
2257     static boolean isKanaKeyboard() {
2258         if( kanaOrNotKeyboard == 0 ) {
2259             if( XlibWrapper.IsKanaKeyboard( getDisplay() )) {
2260                 kanaOrNotKeyboard = IS_KANA_KEYBOARD;
2261             }else{
2262                 kanaOrNotKeyboard = IS_NONKANA_KEYBOARD;
2263             }
2264         }
2265         return (kanaOrNotKeyboard == IS_KANA_KEYBOARD);
2266     }
2267     static boolean isXKBenabled() {
2268         awtLock();
2269         try {
2270             return awt_UseXKB;
2271         } finally {
2272             awtUnlock();
2273         }
2274     }
2275 
2276     /**
2277       Query XKEYBOARD extension.
2278       If possible, initialize xkb library.
2279     */
2280     static boolean tryXKB() {
2281         awtLock();
2282         try {
2283             String name = "XKEYBOARD";
2284             // First, if there is extension at all.
2285             awt_UseXKB = XlibWrapper.XQueryExtension( getDisplay(), name, XlibWrapper.larg1, XlibWrapper.larg2, XlibWrapper.larg3);
2286             if( awt_UseXKB ) {
2287                 // There is a keyboard extension. Check if a client library is compatible.
2288                 // If not, don't use xkb calls.
2289                 // In this case we still may be Xkb-capable application.
2290                 awt_UseXKB_Calls = XlibWrapper.XkbLibraryVersion( XlibWrapper.larg1, XlibWrapper.larg2);
2291                 if( awt_UseXKB_Calls ) {
2292                     awt_UseXKB_Calls = XlibWrapper.XkbQueryExtension( getDisplay(),  XlibWrapper.larg1, XlibWrapper.larg2,
2293                                      XlibWrapper.larg3, XlibWrapper.larg4, XlibWrapper.larg5);
2294                     if( awt_UseXKB_Calls ) {
2295                         awt_XKBBaseEventCode = Native.getInt(XlibWrapper.larg2);
2296                         XlibWrapper.XkbSelectEvents (getDisplay(),
2297                                          XConstants.XkbUseCoreKbd,
2298                                          XConstants.XkbNewKeyboardNotifyMask |
2299                                                  XConstants.XkbMapNotifyMask ,//|
2300                                                  //XConstants.XkbStateNotifyMask,
2301                                          XConstants.XkbNewKeyboardNotifyMask |
2302                                                  XConstants.XkbMapNotifyMask );//|
2303                                                  //XConstants.XkbStateNotifyMask);
2304 
2305                         XlibWrapper.XkbSelectEventDetails(getDisplay(), XConstants.XkbUseCoreKbd,
2306                                                      XConstants.XkbStateNotify,
2307                                                      XConstants.XkbGroupStateMask,
2308                                                      XConstants.XkbGroupStateMask);
2309                                                      //XXX ? XkbGroupLockMask last, XkbAllStateComponentsMask before last?
2310                         awt_XKBDescPtr = XlibWrapper.XkbGetMap(getDisplay(),
2311                                                      XConstants.XkbKeyTypesMask    |
2312                                                      XConstants.XkbKeySymsMask     |
2313                                                      XConstants.XkbModifierMapMask |
2314                                                      XConstants.XkbVirtualModsMask,
2315                                                      XConstants.XkbUseCoreKbd);
2316                     }
2317                 }
2318             }
2319             return awt_UseXKB;
2320         } finally {
2321             awtUnlock();
2322         }
2323     }
2324     static boolean canUseXKBCalls() {
2325         awtLock();
2326         try {
2327             return awt_UseXKB_Calls;
2328         } finally {
2329             awtUnlock();
2330         }
2331     }
2332     static int getXKBEffectiveGroup() {
2333         awtLock();
2334         try {
2335             return awt_XKBEffectiveGroup;
2336         } finally {
2337             awtUnlock();
2338         }
2339     }
2340     static int getXKBBaseEventCode() {
2341         awtLock();
2342         try {
2343             return awt_XKBBaseEventCode;
2344         } finally {
2345             awtUnlock();
2346         }
2347     }
2348     static long getXKBKbdDesc() {
2349         awtLock();
2350         try {
2351             return awt_XKBDescPtr;
2352         } finally {
2353             awtUnlock();
2354         }
2355     }
2356     void freeXKB() {
2357         awtLock();
2358         try {
2359             if (awt_UseXKB_Calls && awt_XKBDescPtr != 0) {
2360                 XlibWrapper.XkbFreeKeyboard(awt_XKBDescPtr, 0xFF, true);
2361                 awt_XKBDescPtr = 0;
2362             }
2363         } finally {
2364             awtUnlock();
2365         }
2366     }
2367     private void processXkbChanges(XEvent ev) {
2368         // mapping change --> refresh kbd map
2369         // state change --> get a new effective group; do I really need it
2370         //  or that should be left for XkbTranslateKeyCode?
2371         XkbEvent xke = new XkbEvent( ev.getPData() );
2372         int xkb_type = xke.get_any().get_xkb_type();
2373         switch( xkb_type ) {
2374             case XConstants.XkbNewKeyboardNotify :
2375                  if( awt_XKBDescPtr != 0 ) {
2376                      freeXKB();
2377                  }
2378                  awt_XKBDescPtr = XlibWrapper.XkbGetMap(getDisplay(),
2379                                               XConstants.XkbKeyTypesMask    |
2380                                               XConstants.XkbKeySymsMask     |
2381                                               XConstants.XkbModifierMapMask |
2382                                               XConstants.XkbVirtualModsMask,
2383                                               XConstants.XkbUseCoreKbd);
2384                  //System.out.println("XkbNewKeyboard:"+(xke.get_new_kbd()));
2385                  break;
2386             case XConstants.XkbMapNotify :
2387                  //TODO: provide a simple unit test.
2388                  XlibWrapper.XkbGetUpdatedMap(getDisplay(),
2389                                               XConstants.XkbKeyTypesMask    |
2390                                               XConstants.XkbKeySymsMask     |
2391                                               XConstants.XkbModifierMapMask |
2392                                               XConstants.XkbVirtualModsMask,
2393                                               awt_XKBDescPtr);
2394                  //System.out.println("XkbMap:"+(xke.get_map()));
2395                  break;
2396             case XConstants.XkbStateNotify :
2397                  // May use it later e.g. to obtain an effective group etc.
2398                  //System.out.println("XkbState:"+(xke.get_state()));
2399                  break;
2400             default:
2401                  //System.out.println("XkbEvent of xkb_type "+xkb_type);
2402                  break;
2403         }
2404     }
2405 
2406     private static long eventNumber;
2407     public static long getEventNumber() {
2408         awtLock();
2409         try {
2410             return eventNumber;
2411         } finally {
2412             awtUnlock();
2413         }
2414     }
2415 
2416     private static XEventDispatcher oops_waiter;
2417     private static boolean oops_updated;
2418     private static boolean oops_failed;
2419     private XAtom oops;
2420     private static final long WORKAROUND_SLEEP = 100;
2421 
2422     /**
2423      * @inheritDoc
2424      */
2425     protected boolean syncNativeQueue(final long timeout) {
2426         XBaseWindow win = XBaseWindow.getXAWTRootWindow();
2427 
2428         if (oops_waiter == null) {
2429             oops_waiter = new XEventDispatcher() {
2430                     public void dispatchEvent(XEvent e) {
2431                         if (e.get_type() == XConstants.SelectionNotify) {
2432                             XSelectionEvent pe = e.get_xselection();
2433                             if (pe.get_property() == oops.getAtom()) {
2434                                 oops_updated = true;
2435                                 awtLockNotifyAll();
2436                             } else if (pe.get_selection() == XAtom.get("WM_S0").getAtom() &&
2437                                        pe.get_target() == XAtom.get("VERSION").getAtom() &&
2438                                        pe.get_property() == 0 &&
2439                                        XlibWrapper.XGetSelectionOwner(getDisplay(), XAtom.get("WM_S0").getAtom()) == 0)
2440                             {
2441                                 // WM forgot to acquire selection  or there is no WM
2442                                 oops_failed = true;
2443                                 awtLockNotifyAll();
2444                             }
2445 
2446                         }
2447                     }
2448                 };
2449         }
2450 
2451         if (oops == null) {
2452             oops = XAtom.get("OOPS");
2453         }
2454 
2455         awtLock();
2456         try {
2457             addEventDispatcher(win.getWindow(), oops_waiter);
2458 
2459             oops_updated = false;
2460             oops_failed = false;
2461             // Wait for selection notify for oops on win
2462             long event_number = getEventNumber();
2463             XAtom atom = XAtom.get("WM_S0");
2464             eventLog.finer("WM_S0 selection owner {0}", XlibWrapper.XGetSelectionOwner(getDisplay(), atom.getAtom()));
2465             XlibWrapper.XConvertSelection(getDisplay(), atom.getAtom(),
2466                                           XAtom.get("VERSION").getAtom(), oops.getAtom(),
2467                                           win.getWindow(), XConstants.CurrentTime);
2468             XSync();
2469 
2470 
2471             eventLog.finer("Requested OOPS");
2472 
2473             long start = System.currentTimeMillis();
2474             while (!oops_updated && !oops_failed) {
2475                 try {
2476                     awtLockWait(timeout);
2477                 } catch (InterruptedException e) {
2478                     throw new RuntimeException(e);
2479                 }
2480                 // This "while" is a protection from spurious
2481                 // wake-ups.  However, we shouldn't wait for too long
2482                 if ((System.currentTimeMillis() - start > timeout) && timeout >= 0) {
2483                     throw new OperationTimedOut(Long.toString(System.currentTimeMillis() - start));
2484                 }
2485             }
2486             if (oops_failed && getEventNumber() - event_number == 1) {
2487                 // If selection update failed we can simply wait some time
2488                 // hoping some events will arrive
2489                 awtUnlock();
2490                 eventLog.finest("Emergency sleep");
2491                 try {
2492                     Thread.sleep(WORKAROUND_SLEEP);
2493                 } catch (InterruptedException ie) {
2494                     throw new RuntimeException(ie);
2495                 } finally {
2496                     awtLock();
2497                 }
2498             }
2499             return getEventNumber() - event_number > 2;
2500         } finally {
2501             removeEventDispatcher(win.getWindow(), oops_waiter);
2502             eventLog.finer("Exiting syncNativeQueue");
2503             awtUnlock();
2504         }
2505     }
2506     public void grab(Window w) {
2507         if (w.getPeer() != null) {
2508             ((XWindowPeer)w.getPeer()).setGrab(true);
2509         }
2510     }
2511 
2512     public void ungrab(Window w) {
2513         if (w.getPeer() != null) {
2514            ((XWindowPeer)w.getPeer()).setGrab(false);
2515         }
2516     }
2517     /**
2518      * Returns if the java.awt.Desktop class is supported on the current
2519      * desktop.
2520      * <p>
2521      * The methods of java.awt.Desktop class are supported on the Gnome desktop.
2522      * Check if the running desktop is Gnome by checking the window manager.
2523      */
2524     public boolean isDesktopSupported(){
2525         return XDesktopPeer.isDesktopSupported();
2526     }
2527 
2528     public DesktopPeer createDesktopPeer(Desktop target){
2529         return new XDesktopPeer();
2530     }
2531 
2532     public boolean areExtraMouseButtonsEnabled() throws HeadlessException {
2533         return areExtraMouseButtonsEnabled;
2534     }
2535 
2536     @Override
2537     public boolean isWindowOpacitySupported() {
2538         XNETProtocol net_protocol = XWM.getWM().getNETProtocol();
2539 
2540         if (net_protocol == null) {
2541             return false;
2542         }
2543 
2544         return net_protocol.doOpacityProtocol();
2545     }
2546 
2547     @Override
2548     public boolean isWindowShapingSupported() {
2549         return XlibUtil.isShapingSupported();
2550     }
2551 
2552     @Override
2553     public boolean isWindowTranslucencySupported() {
2554         //NOTE: it may not be supported. The actual check is being performed
2555         //      at com.sun.awt.AWTUtilities(). In X11 we need to check
2556         //      whether there's any translucency-capable GC available.
2557         return true;
2558     }
2559 
2560     @Override
2561     public boolean isTranslucencyCapable(GraphicsConfiguration gc) {
2562         if (!(gc instanceof X11GraphicsConfig)) {
2563             return false;
2564         }
2565         return ((X11GraphicsConfig)gc).isTranslucencyCapable();
2566     }
2567 
2568     /**
2569      * Returns the value of "sun.awt.disablegrab" property. Default
2570      * value is {@code false}.
2571      */
2572     public static boolean getSunAwtDisableGrab() {
2573         return AccessController.doPrivileged(new GetBooleanAction("sun.awt.disablegrab"));
2574     }
2575 }