1 /*
   2  * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.lwawt;
  27 
  28 import java.awt.*;
  29 import java.awt.event.*;
  30 import java.awt.peer.*;
  31 import java.util.List;
  32 
  33 import javax.swing.*;
  34 
  35 import sun.awt.*;
  36 import sun.awt.AWTAccessor.ComponentAccessor;
  37 import sun.java2d.*;
  38 import sun.java2d.loops.Blit;
  39 import sun.java2d.loops.CompositeType;
  40 import sun.java2d.pipe.Region;
  41 import sun.util.logging.PlatformLogger;
  42 
  43 public class LWWindowPeer
  44     extends LWContainerPeer<Window, JComponent>
  45     implements FramePeer, DialogPeer, FullScreenCapable, DisplayChangedListener, PlatformEventNotifier
  46 {
  47     public enum PeerType {
  48         SIMPLEWINDOW,
  49         FRAME,
  50         DIALOG,
  51         EMBEDDED_FRAME,
  52         VIEW_EMBEDDED_FRAME,
  53         LW_FRAME
  54     }
  55 
  56     private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.lwawt.focus.LWWindowPeer");
  57 
  58     private final PlatformWindow platformWindow;
  59 
  60     private static final int MINIMUM_WIDTH = 1;
  61     private static final int MINIMUM_HEIGHT = 1;
  62 
  63     private Insets insets = new Insets(0, 0, 0, 0);
  64 
  65     private GraphicsDevice graphicsDevice;
  66     private GraphicsConfiguration graphicsConfig;
  67 
  68     private SurfaceData surfaceData;
  69     private final Object surfaceDataLock = new Object();
  70 
  71     private volatile int windowState = Frame.NORMAL;
  72 
  73     // check that the mouse is over the window
  74     private volatile boolean isMouseOver = false;
  75 
  76     // A peer where the last mouse event came to. Used by cursor manager to
  77     // find the component under cursor
  78     private static volatile LWComponentPeer<?, ?> lastCommonMouseEventPeer;
  79 
  80     // A peer where the last mouse event came to. Used to generate
  81     // MOUSE_ENTERED/EXITED notifications
  82     private volatile LWComponentPeer<?, ?> lastMouseEventPeer;
  83 
  84     // Peers where all dragged/released events should come to,
  85     // depending on what mouse button is being dragged according to Cocoa
  86     private static final LWComponentPeer<?, ?>[] mouseDownTarget = new LWComponentPeer<?, ?>[3];
  87 
  88     // A bitmask that indicates what mouse buttons produce MOUSE_CLICKED events
  89     // on MOUSE_RELEASE. Click events are only generated if there were no drag
  90     // events between MOUSE_PRESSED and MOUSE_RELEASED for particular button
  91     private static int mouseClickButtons = 0;
  92 
  93     private volatile boolean isOpaque = true;
  94 
  95     private static final Font DEFAULT_FONT = new Font("Lucida Grande", Font.PLAIN, 13);
  96 
  97     private static LWWindowPeer grabbingWindow;
  98 
  99     private volatile boolean skipNextFocusChange;
 100 
 101     private static final Color nonOpaqueBackground = new Color(0, 0, 0, 0);
 102 
 103     private volatile boolean textured;
 104 
 105     private final PeerType peerType;
 106 
 107     private final SecurityWarningWindow warningWindow;
 108 
 109     private volatile boolean targetFocusable;
 110 
 111     /**
 112      * Current modal blocker or null.
 113      *
 114      * Synchronization: peerTreeLock.
 115      */
 116     private LWWindowPeer blocker;
 117 
 118     public LWWindowPeer(Window target, PlatformComponent platformComponent,
 119                         PlatformWindow platformWindow, PeerType peerType)
 120     {
 121         super(target, platformComponent);
 122         this.platformWindow = platformWindow;
 123         this.peerType = peerType;
 124 
 125         Window owner = target.getOwner();
 126         LWWindowPeer ownerPeer = owner == null ? null :
 127              (LWWindowPeer) AWTAccessor.getComponentAccessor().getPeer(owner);
 128         PlatformWindow ownerDelegate = (ownerPeer != null) ? ownerPeer.getPlatformWindow() : null;
 129 
 130         // The delegate.initialize() needs a non-null GC on X11.
 131         GraphicsConfiguration gc = getTarget().getGraphicsConfiguration();
 132         synchronized (getStateLock()) {
 133             // graphicsConfig should be updated according to the real window
 134             // bounds when the window is shown, see 4868278
 135             this.graphicsConfig = gc;
 136         }
 137 
 138         if (!target.isFontSet()) {
 139             target.setFont(DEFAULT_FONT);
 140         }
 141 
 142         if (!target.isBackgroundSet()) {
 143             target.setBackground(SystemColor.window);
 144         } else {
 145             // first we check if user provided alpha for background. This is
 146             // similar to what Apple's Java do.
 147             // Since JDK7 we should rely on setOpacity() only.
 148             // this.opacity = c.getAlpha();
 149         }
 150 
 151         if (!target.isForegroundSet()) {
 152             target.setForeground(SystemColor.windowText);
 153             // we should not call setForeground because it will call a repaint
 154             // which the peer may not be ready to do yet.
 155         }
 156 
 157         platformWindow.initialize(target, this, ownerDelegate);
 158 
 159         // Init warning window(for applets)
 160         SecurityWarningWindow warn = null;
 161         if (target.getWarningString() != null) {
 162             // accessSystemTray permission allows to display TrayIcon, TrayIcon tooltip
 163             // and TrayIcon balloon windows without a warning window.
 164             if (!AWTAccessor.getWindowAccessor().isTrayIconWindow(target)) {
 165                 LWToolkit toolkit = (LWToolkit)Toolkit.getDefaultToolkit();
 166                 warn = toolkit.createSecurityWarning(target, this);
 167             }
 168         }
 169 
 170         warningWindow = warn;
 171     }
 172 
 173     @Override
 174     void initializeImpl() {
 175         super.initializeImpl();
 176 
 177 
 178         if (getTarget() instanceof Frame) {
 179             setTitle(((Frame) getTarget()).getTitle());
 180             setState(((Frame) getTarget()).getExtendedState());
 181         } else if (getTarget() instanceof Dialog) {
 182             setTitle(((Dialog) getTarget()).getTitle());
 183         }
 184 
 185         updateAlwaysOnTopState();
 186         updateMinimumSize();
 187 
 188         final Shape shape = getTarget().getShape();
 189         if (shape != null) {
 190             applyShape(Region.getInstance(shape, null));
 191         }
 192 
 193         final float opacity = getTarget().getOpacity();
 194         if (opacity < 1.0f) {
 195             setOpacity(opacity);
 196         }
 197 
 198         setOpaque(getTarget().isOpaque());
 199 
 200         updateInsets(platformWindow.getInsets());
 201         if (getSurfaceData() == null) {
 202             replaceSurfaceData(false);
 203         }
 204         activateDisplayListener();
 205     }
 206 
 207     // Just a helper method
 208     @Override
 209     public PlatformWindow getPlatformWindow() {
 210         return platformWindow;
 211     }
 212 
 213     @Override
 214     protected LWWindowPeer getWindowPeerOrSelf() {
 215         return this;
 216     }
 217 
 218     // ---- PEER METHODS ---- //
 219 
 220     @Override
 221     protected void disposeImpl() {
 222         deactivateDisplayListener();
 223         SurfaceData oldData = getSurfaceData();
 224         synchronized (surfaceDataLock){
 225             surfaceData = null;
 226         }
 227         if (oldData != null) {
 228             oldData.invalidate();
 229         }
 230         if (isGrabbing()) {
 231             ungrab();
 232         }
 233         if (warningWindow != null) {
 234             warningWindow.dispose();
 235         }
 236 
 237         platformWindow.dispose();
 238         super.disposeImpl();
 239     }
 240 
 241     @Override
 242     protected void setVisibleImpl(final boolean visible) {
 243         if (!visible && warningWindow != null) {
 244             warningWindow.setVisible(false, false);
 245         }
 246         updateFocusableWindowState();
 247         super.setVisibleImpl(visible);
 248         // TODO: update graphicsConfig, see 4868278
 249         platformWindow.setVisible(visible);
 250         if (isSimpleWindow()) {
 251             KeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
 252             if (visible) {
 253                 if (!getTarget().isAutoRequestFocus()) {
 254                     return;
 255                 } else {
 256                     requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
 257                 }
 258             // Focus the owner in case this window is focused.
 259             } else if (kfmPeer.getCurrentFocusedWindow() == getTarget()) {
 260                 // Transfer focus to the owner.
 261                 LWWindowPeer owner = getOwnerFrameDialog(LWWindowPeer.this);
 262                 if (owner != null) {
 263                     owner.requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
 264                 }
 265             }
 266         }
 267     }
 268 
 269     @Override
 270     public final GraphicsConfiguration getGraphicsConfiguration() {
 271         synchronized (getStateLock()) {
 272             return graphicsConfig;
 273         }
 274     }
 275 
 276     @Override
 277     public boolean updateGraphicsData(GraphicsConfiguration gc) {
 278         setGraphicsConfig(gc);
 279         return false;
 280     }
 281 
 282     protected final Graphics getOnscreenGraphics(Color fg, Color bg, Font f) {
 283         if (getSurfaceData() == null) {
 284             return null;
 285         }
 286         if (fg == null) {
 287             fg = SystemColor.windowText;
 288         }
 289         if (bg == null) {
 290             bg = SystemColor.window;
 291         }
 292         if (f == null) {
 293             f = DEFAULT_FONT;
 294         }
 295         return platformWindow.transformGraphics(new SunGraphics2D(getSurfaceData(), fg, bg, f));
 296     }
 297 
 298     @Override
 299     public void setBounds(int x, int y, int w, int h, int op) {
 300 
 301         if((op & NO_EMBEDDED_CHECK) == 0 && getPeerType() == PeerType.VIEW_EMBEDDED_FRAME) {
 302             return;
 303         }
 304 
 305         if ((op & SET_CLIENT_SIZE) != 0) {
 306             // SET_CLIENT_SIZE is only applicable to window peers, so handle it here
 307             // instead of pulling 'insets' field up to LWComponentPeer
 308             // no need to add insets since Window's notion of width and height includes insets.
 309             op &= ~SET_CLIENT_SIZE;
 310             op |= SET_SIZE;
 311         }
 312 
 313         // Don't post ComponentMoved/Resized and Paint events
 314         // until we've got a notification from the delegate
 315         Rectangle cb = constrainBounds(x, y, w, h);
 316 
 317         Rectangle newBounds = new Rectangle(getBounds());
 318         if ((op & (SET_LOCATION | SET_BOUNDS)) != 0) {
 319             newBounds.x = cb.x;
 320             newBounds.y = cb.y;
 321         }
 322         if ((op & (SET_SIZE | SET_BOUNDS)) != 0) {
 323             newBounds.width = cb.width;
 324             newBounds.height = cb.height;
 325         }
 326         // Native system could constraint bounds, so the peer wold be updated in the callback
 327         platformWindow.setBounds(newBounds.x, newBounds.y, newBounds.width, newBounds.height);
 328     }
 329 
 330     public Rectangle constrainBounds(Rectangle bounds) {
 331         return constrainBounds(bounds.x, bounds.y, bounds.width, bounds.height);
 332     }
 333 
 334     public Rectangle constrainBounds(int x, int y, int w, int h) {
 335 
 336         if (w < MINIMUM_WIDTH) {
 337             w = MINIMUM_WIDTH;
 338         }
 339 
 340         if (h < MINIMUM_HEIGHT) {
 341             h = MINIMUM_HEIGHT;
 342         }
 343 
 344         final int maxW = getLWGC().getMaxTextureWidth();
 345         final int maxH = getLWGC().getMaxTextureHeight();
 346 
 347         if (w > maxW) {
 348             w = maxW;
 349         }
 350         if (h > maxH) {
 351             h = maxH;
 352         }
 353 
 354         return new Rectangle(x, y, w, h);
 355     }
 356 
 357     @Override
 358     public Point getLocationOnScreen() {
 359         return platformWindow.getLocationOnScreen();
 360     }
 361 
 362     /**
 363      * Overridden from LWContainerPeer to return the correct insets.
 364      * Insets are queried from the delegate and are kept up to date by
 365      * requiering when needed (i.e. when the window geometry is changed).
 366      */
 367     @Override
 368     public Insets getInsets() {
 369         synchronized (getStateLock()) {
 370             return insets;
 371         }
 372     }
 373 
 374     @Override
 375     public FontMetrics getFontMetrics(Font f) {
 376         // TODO: check for "use platform metrics" settings
 377         return platformWindow.getFontMetrics(f);
 378     }
 379 
 380     @Override
 381     public void toFront() {
 382         platformWindow.toFront();
 383     }
 384 
 385     @Override
 386     public void toBack() {
 387         platformWindow.toBack();
 388     }
 389 
 390     @Override
 391     public void setZOrder(ComponentPeer above) {
 392         throw new RuntimeException("not implemented");
 393     }
 394 
 395     @Override
 396     public void updateAlwaysOnTopState() {
 397         platformWindow.setAlwaysOnTop(getTarget().isAlwaysOnTop());
 398     }
 399 
 400     @Override
 401     public void updateFocusableWindowState() {
 402         targetFocusable = getTarget().isFocusableWindow();
 403         platformWindow.updateFocusableWindowState();
 404     }
 405 
 406     @Override
 407     public void setModalBlocked(Dialog blocker, boolean blocked) {
 408         synchronized (getPeerTreeLock()) {
 409             ComponentPeer peer =  AWTAccessor.getComponentAccessor().getPeer(blocker);
 410             if (blocked && (peer instanceof LWWindowPeer)) {
 411                 this.blocker = (LWWindowPeer) peer;
 412             } else {
 413                 this.blocker = null;
 414             }
 415         }
 416 
 417         platformWindow.setModalBlocked(blocked);
 418     }
 419 
 420     @Override
 421     public void updateMinimumSize() {
 422         final Dimension min;
 423         if (getTarget().isMinimumSizeSet()) {
 424             min = getTarget().getMinimumSize();
 425             min.width = Math.max(min.width, MINIMUM_WIDTH);
 426             min.height = Math.max(min.height, MINIMUM_HEIGHT);
 427         } else {
 428             min = new Dimension(MINIMUM_WIDTH, MINIMUM_HEIGHT);
 429         }
 430 
 431         final Dimension max;
 432         if (getTarget().isMaximumSizeSet()) {
 433             max = getTarget().getMaximumSize();
 434             max.width = Math.min(max.width, getLWGC().getMaxTextureWidth());
 435             max.height = Math.min(max.height, getLWGC().getMaxTextureHeight());
 436         } else {
 437             max = new Dimension(getLWGC().getMaxTextureWidth(),
 438                                 getLWGC().getMaxTextureHeight());
 439         }
 440 
 441         platformWindow.setSizeConstraints(min.width, min.height, max.width, max.height);
 442     }
 443 
 444     @Override
 445     public void updateIconImages() {
 446         getPlatformWindow().updateIconImages();
 447     }
 448 
 449     @Override
 450     public void setBackground(final Color c) {
 451         super.setBackground(c);
 452         updateOpaque();
 453     }
 454 
 455     @Override
 456     public void setOpacity(float opacity) {
 457         getPlatformWindow().setOpacity(opacity);
 458         repaintPeer();
 459     }
 460 
 461     @Override
 462     public final void setOpaque(final boolean isOpaque) {
 463         if (this.isOpaque != isOpaque) {
 464             this.isOpaque = isOpaque;
 465             updateOpaque();
 466         }
 467     }
 468 
 469     private void updateOpaque() {
 470         getPlatformWindow().setOpaque(!isTranslucent());
 471         replaceSurfaceData(false);
 472         repaintPeer();
 473     }
 474 
 475     @Override
 476     public void updateWindow() {
 477     }
 478 
 479     public final boolean isTextured() {
 480         return textured;
 481     }
 482 
 483     public final void setTextured(final boolean isTextured) {
 484         textured = isTextured;
 485     }
 486 
 487     @Override
 488     public final boolean isTranslucent() {
 489         synchronized (getStateLock()) {
 490             /*
 491              * Textured window is a special case of translucent window.
 492              * The difference is only in nswindow background. So when we set
 493              * texture property our peer became fully translucent. It doesn't
 494              * fill background, create non opaque backbuffers and layer etc.
 495              */
 496             return !isOpaque || isShaped() || isTextured();
 497         }
 498     }
 499 
 500     @Override
 501     final void applyShapeImpl(final Region shape) {
 502         super.applyShapeImpl(shape);
 503         updateOpaque();
 504     }
 505 
 506     @Override
 507     public void repositionSecurityWarning() {
 508         if (warningWindow != null) {
 509             ComponentAccessor compAccessor = AWTAccessor.getComponentAccessor();
 510             Window target = getTarget();
 511             int x = compAccessor.getX(target);
 512             int y = compAccessor.getY(target);
 513             int width = compAccessor.getWidth(target);
 514             int height = compAccessor.getHeight(target);
 515             warningWindow.reposition(x, y, width, height);
 516         }
 517     }
 518 
 519     // ---- FRAME PEER METHODS ---- //
 520 
 521     @Override // FramePeer and DialogPeer
 522     public void setTitle(String title) {
 523         platformWindow.setTitle(title == null ? "" : title);
 524     }
 525 
 526     @Override
 527     public void setMenuBar(MenuBar mb) {
 528          platformWindow.setMenuBar(mb);
 529     }
 530 
 531     @Override // FramePeer and DialogPeer
 532     public void setResizable(boolean resizable) {
 533         platformWindow.setResizable(resizable);
 534     }
 535 
 536     @Override
 537     public void setState(int state) {
 538         platformWindow.setWindowState(state);
 539     }
 540 
 541     @Override
 542     public int getState() {
 543         return windowState;
 544     }
 545 
 546     public Rectangle getMaximizedBounds() {
 547         Object target = getTarget();
 548         return (target instanceof Frame)
 549                 ? ((Frame) target).getMaximizedBounds() : null;
 550     }
 551 
 552     public Rectangle getDefaultMaximizedBounds() {
 553         GraphicsConfiguration config = getGraphicsConfiguration();
 554         Insets insets = ((CGraphicsDevice) config.getDevice()).getScreenInsets();
 555         Rectangle toBounds = config.getBounds();
 556         return new Rectangle(
 557                 toBounds.x + insets.left,
 558                 toBounds.y + insets.top,
 559                 toBounds.width - insets.left - insets.right,
 560                 toBounds.height - insets.top - insets.bottom);
 561     }
 562 
 563     @Override
 564     public void setMaximizedBounds(Rectangle bounds) {
 565 
 566         bounds = (bounds == null)
 567                 ? getDefaultMaximizedBounds()
 568                 : constrainBounds(bounds);
 569         platformWindow.setMaximizedBounds(
 570                 bounds.x, bounds.y, bounds.width, bounds.height);
 571     }
 572 
 573     private void updateMaximizedBounds() {
 574         Rectangle maximizedBounds = getMaximizedBounds();
 575         if (maximizedBounds == null) {
 576             setMaximizedBounds(getDefaultMaximizedBounds());
 577         }
 578     }
 579 
 580     @Override
 581     public void setBoundsPrivate(int x, int y, int width, int height) {
 582         setBounds(x, y, width, height, SET_BOUNDS | NO_EMBEDDED_CHECK);
 583     }
 584 
 585     @Override
 586     public Rectangle getBoundsPrivate() {
 587         throw new RuntimeException("not implemented");
 588     }
 589 
 590     // ---- DIALOG PEER METHODS ---- //
 591 
 592     @Override
 593     public void blockWindows(List<Window> windows) {
 594         //TODO: LWX will probably need some collectJavaToplevels to speed this up
 595         for (Window w : windows) {
 596             WindowPeer wp = AWTAccessor.getComponentAccessor().getPeer(w);
 597             if (wp != null) {
 598                 wp.setModalBlocked((Dialog)getTarget(), true);
 599             }
 600         }
 601     }
 602 
 603     // ---- PEER NOTIFICATIONS ---- //
 604 
 605     @Override
 606     public void notifyIconify(boolean iconify) {
 607         //The toplevel target is Frame and states are applicable to it.
 608         //Otherwise, the target is Window and it don't have state property.
 609         //Hopefully, no such events are posted in the queue so consider the
 610         //target as Frame in all cases.
 611 
 612         // REMIND: should we send it anyway if the state not changed since last
 613         // time?
 614         WindowEvent iconifyEvent = new WindowEvent(getTarget(),
 615                 iconify ? WindowEvent.WINDOW_ICONIFIED
 616                         : WindowEvent.WINDOW_DEICONIFIED);
 617         postEvent(iconifyEvent);
 618 
 619         int newWindowState = iconify ? Frame.ICONIFIED : Frame.NORMAL;
 620         postWindowStateChangedEvent(newWindowState);
 621 
 622         // REMIND: RepaintManager doesn't repaint iconified windows and
 623         // hence ignores any repaint request during deiconification.
 624         // So, we need to repaint window explicitly when it becomes normal.
 625         if (!iconify) {
 626             repaintPeer();
 627         }
 628     }
 629 
 630     @Override
 631     public void notifyZoom(boolean isZoomed) {
 632         int newWindowState = isZoomed ? Frame.MAXIMIZED_BOTH : Frame.NORMAL;
 633         postWindowStateChangedEvent(newWindowState);
 634     }
 635 
 636     /**
 637      * Called by the {@code PlatformWindow} when any part of the window should
 638      * be repainted.
 639      */
 640     @Override
 641     public void notifyExpose(final Rectangle r) {
 642         repaintPeer(r);
 643     }
 644 
 645     /**
 646      * Called by the {@code PlatformWindow} when this window is moved/resized by
 647      * user or window insets are changed. There's no notifyReshape() in
 648      * LWComponentPeer as the only components which could be resized by user are
 649      * top-level windows.
 650      */
 651     @Override
 652     public void notifyReshape(int x, int y, int w, int h) {
 653         Rectangle oldBounds = getBounds();
 654         final boolean invalid = updateInsets(platformWindow.getInsets());
 655         final boolean moved = (x != oldBounds.x) || (y != oldBounds.y);
 656         final boolean resized = (w != oldBounds.width) || (h != oldBounds.height);
 657 
 658         // Check if anything changed
 659         if (!moved && !resized && !invalid) {
 660             return;
 661         }
 662         // First, update peer's bounds
 663         setBounds(x, y, w, h, SET_BOUNDS, false, false);
 664 
 665         // Second, update the graphics config and surface data
 666         final boolean isNewDevice = updateGraphicsDevice();
 667         if (isNewDevice) {
 668             updateMaximizedBounds();
 669         }
 670 
 671         if (resized || isNewDevice) {
 672             replaceSurfaceData();
 673             updateMinimumSize();
 674         }
 675 
 676         // Third, COMPONENT_MOVED/COMPONENT_RESIZED/PAINT events
 677         if (moved || invalid) {
 678             handleMove(x, y, true);
 679         }
 680         if (resized || invalid || isNewDevice) {
 681             handleResize(w, h, true);
 682             repaintPeer();
 683         }
 684 
 685         repositionSecurityWarning();
 686     }
 687 
 688     private void clearBackground(final int w, final int h) {
 689         final Graphics g = getOnscreenGraphics(getForeground(), getBackground(),
 690                                                getFont());
 691         if (g != null) {
 692             try {
 693                 if (g instanceof Graphics2D) {
 694                     ((Graphics2D) g).setComposite(AlphaComposite.Src);
 695                 }
 696                 if (isTranslucent()) {
 697                     g.setColor(nonOpaqueBackground);
 698                     g.fillRect(0, 0, w, h);
 699                 }
 700                 if (!isTextured()) {
 701                     if (g instanceof SunGraphics2D) {
 702                         ((SunGraphics2D) g).constrain(0, 0, w, h, getRegion());
 703                     }
 704                     g.setColor(getBackground());
 705                     g.fillRect(0, 0, w, h);
 706                 }
 707             } finally {
 708                 g.dispose();
 709             }
 710         }
 711     }
 712 
 713     @Override
 714     public void notifyUpdateCursor() {
 715         getLWToolkit().getCursorManager().updateCursorLater(this);
 716     }
 717 
 718     @Override
 719     public void notifyActivation(boolean activation, LWWindowPeer opposite) {
 720         Window oppositeWindow = (opposite == null)? null : opposite.getTarget();
 721         changeFocusedWindow(activation, oppositeWindow);
 722     }
 723 
 724     // MouseDown in non-client area
 725     @Override
 726     public void notifyNCMouseDown() {
 727         // Ungrab except for a click on a Dialog with the grabbing owner
 728         if (grabbingWindow != null &&
 729             !grabbingWindow.isOneOfOwnersOf(this))
 730         {
 731             grabbingWindow.ungrab();
 732         }
 733     }
 734 
 735     // ---- EVENTS ---- //
 736 
 737     /*
 738      * Called by the delegate to dispatch the event to Java. Event
 739      * coordinates are relative to non-client window are, i.e. the top-left
 740      * point of the client area is (insets.top, insets.left).
 741      */
 742     @Override
 743     public void notifyMouseEvent(int id, long when, int button,
 744                                  int x, int y, int screenX, int screenY,
 745                                  int modifiers, int clickCount, boolean popupTrigger,
 746                                  byte[] bdata)
 747     {
 748         // TODO: fill "bdata" member of AWTEvent
 749         Rectangle r = getBounds();
 750         // findPeerAt() expects parent coordinates
 751         LWComponentPeer<?, ?> targetPeer = findPeerAt(r.x + x, r.y + y);
 752 
 753         if (id == MouseEvent.MOUSE_EXITED) {
 754             isMouseOver = false;
 755             if (lastMouseEventPeer != null) {
 756                 if (lastMouseEventPeer.isEnabled()) {
 757                     Point lp = lastMouseEventPeer.windowToLocal(x, y,
 758                             this);
 759                     Component target = lastMouseEventPeer.getTarget();
 760                     postMouseExitedEvent(target, when, modifiers, lp,
 761                             screenX, screenY, clickCount, popupTrigger, button);
 762                 }
 763 
 764                 // Sometimes we may get MOUSE_EXITED after lastCommonMouseEventPeer is switched
 765                 // to a peer from another window. So we must first check if this peer is
 766                 // the same as lastWindowPeer
 767                 if (lastCommonMouseEventPeer != null && lastCommonMouseEventPeer.getWindowPeerOrSelf() == this) {
 768                     lastCommonMouseEventPeer = null;
 769                 }
 770                 lastMouseEventPeer = null;
 771             }
 772         } else if(id == MouseEvent.MOUSE_ENTERED) {
 773             isMouseOver = true;
 774             if (targetPeer != null) {
 775                 if (targetPeer.isEnabled()) {
 776                     Point lp = targetPeer.windowToLocal(x, y, this);
 777                     Component target = targetPeer.getTarget();
 778                     postMouseEnteredEvent(target, when, modifiers, lp,
 779                             screenX, screenY, clickCount, popupTrigger, button);
 780                 }
 781                 lastCommonMouseEventPeer = targetPeer;
 782                 lastMouseEventPeer = targetPeer;
 783             }
 784         } else {
 785             PlatformWindow topmostPlatforWindow =
 786                     platformWindow.getTopmostPlatformWindowUnderMouse();
 787 
 788             LWWindowPeer topmostWindowPeer =
 789                     topmostPlatforWindow != null ? topmostPlatforWindow.getPeer() : null;
 790 
 791             // topmostWindowPeer == null condition is added for the backward
 792             // compatibility with applets. It can be removed when the
 793             // getTopmostPlatformWindowUnderMouse() method will be properly
 794             // implemented in CPlatformEmbeddedFrame class
 795             if (topmostWindowPeer == this || topmostWindowPeer == null) {
 796                 generateMouseEnterExitEventsForComponents(when, button, x, y,
 797                         screenX, screenY, modifiers, clickCount, popupTrigger,
 798                         targetPeer);
 799             } else {
 800                 LWComponentPeer<?, ?> topmostTargetPeer =
 801                         topmostWindowPeer != null ? topmostWindowPeer.findPeerAt(r.x + x, r.y + y) : null;
 802                 topmostWindowPeer.generateMouseEnterExitEventsForComponents(when, button, x, y,
 803                         screenX, screenY, modifiers, clickCount, popupTrigger,
 804                         topmostTargetPeer);
 805             }
 806 
 807             // TODO: fill "bdata" member of AWTEvent
 808 
 809             int eventButtonMask = (button > 0)? MouseEvent.getMaskForButton(button) : 0;
 810             int otherButtonsPressed = modifiers & ~eventButtonMask;
 811 
 812             // For pressed/dragged/released events OS X treats other
 813             // mouse buttons as if they were BUTTON2, so we do the same
 814             int targetIdx = (button > 3) ? MouseEvent.BUTTON2 - 1 : button - 1;
 815 
 816             // MOUSE_ENTERED/EXITED are generated for the components strictly under
 817             // mouse even when dragging. That's why we first update lastMouseEventPeer
 818             // based on initial targetPeer value and only then recalculate targetPeer
 819             // for MOUSE_DRAGGED/RELEASED events
 820             if (id == MouseEvent.MOUSE_PRESSED) {
 821 
 822                 // Ungrab only if this window is not an owned window of the grabbing one.
 823                 if (!isGrabbing() && grabbingWindow != null &&
 824                     !grabbingWindow.isOneOfOwnersOf(this))
 825                 {
 826                     grabbingWindow.ungrab();
 827                 }
 828                 if (otherButtonsPressed == 0) {
 829                     mouseClickButtons = eventButtonMask;
 830                 } else {
 831                     mouseClickButtons |= eventButtonMask;
 832                 }
 833 
 834                 // The window should be focused on mouse click. If it gets activated by the native platform,
 835                 // this request will be no op. It will take effect when:
 836                 // 1. A simple not focused window is clicked.
 837                 // 2. An active but not focused owner frame/dialog is clicked.
 838                 // The mouse event then will trigger a focus request "in window" to the component, so the window
 839                 // should gain focus before.
 840                 requestWindowFocus(CausedFocusEvent.Cause.MOUSE_EVENT);
 841 
 842                 mouseDownTarget[targetIdx] = targetPeer;
 843             } else if (id == MouseEvent.MOUSE_DRAGGED) {
 844                 // Cocoa dragged event has the information about which mouse
 845                 // button is being dragged. Use it to determine the peer that
 846                 // should receive the dragged event.
 847                 targetPeer = mouseDownTarget[targetIdx];
 848                 mouseClickButtons &= ~modifiers;
 849             } else if (id == MouseEvent.MOUSE_RELEASED) {
 850                 // TODO: currently, mouse released event goes to the same component
 851                 // that received corresponding mouse pressed event. For most cases,
 852                 // it's OK, however, we need to make sure that our behavior is consistent
 853                 // with 1.6 for cases where component in question have been
 854                 // hidden/removed in between of mouse pressed/released events.
 855                 targetPeer = mouseDownTarget[targetIdx];
 856 
 857                 if ((modifiers & eventButtonMask) == 0) {
 858                     mouseDownTarget[targetIdx] = null;
 859                 }
 860 
 861                 // mouseClickButtons is updated below, after MOUSE_CLICK is sent
 862             }
 863 
 864             if (targetPeer == null) {
 865                 //TODO This can happen if this window is invisible. this is correct behavior in this case?
 866                 targetPeer = this;
 867             }
 868 
 869 
 870             Point lp = targetPeer.windowToLocal(x, y, this);
 871             if (targetPeer.isEnabled()) {
 872                 MouseEvent event = new MouseEvent(targetPeer.getTarget(), id,
 873                                                   when, modifiers, lp.x, lp.y,
 874                                                   screenX, screenY, clickCount,
 875                                                   popupTrigger, button);
 876                 postEvent(event);
 877             }
 878 
 879             if (id == MouseEvent.MOUSE_RELEASED) {
 880                 if ((mouseClickButtons & eventButtonMask) != 0
 881                     && targetPeer.isEnabled()) {
 882                     postEvent(new MouseEvent(targetPeer.getTarget(),
 883                                              MouseEvent.MOUSE_CLICKED,
 884                                              when, modifiers,
 885                                              lp.x, lp.y, screenX, screenY,
 886                                              clickCount, popupTrigger, button));
 887                 }
 888                 mouseClickButtons &= ~eventButtonMask;
 889             }
 890         }
 891         notifyUpdateCursor();
 892     }
 893 
 894     private void generateMouseEnterExitEventsForComponents(long when,
 895             int button, int x, int y, int screenX, int screenY,
 896             int modifiers, int clickCount, boolean popupTrigger,
 897             final LWComponentPeer<?, ?> targetPeer) {
 898 
 899         if (!isMouseOver || targetPeer == lastMouseEventPeer) {
 900             return;
 901         }
 902 
 903         // Generate Mouse Exit for components
 904         if (lastMouseEventPeer != null && lastMouseEventPeer.isEnabled()) {
 905             Point oldp = lastMouseEventPeer.windowToLocal(x, y, this);
 906             Component target = lastMouseEventPeer.getTarget();
 907             postMouseExitedEvent(target, when, modifiers, oldp, screenX, screenY,
 908                     clickCount, popupTrigger, button);
 909         }
 910         lastCommonMouseEventPeer = targetPeer;
 911         lastMouseEventPeer = targetPeer;
 912 
 913         // Generate Mouse Enter for components
 914         if (targetPeer != null && targetPeer.isEnabled()) {
 915             Point newp = targetPeer.windowToLocal(x, y, this);
 916             Component target = targetPeer.getTarget();
 917             postMouseEnteredEvent(target, when, modifiers, newp, screenX, screenY, clickCount, popupTrigger, button);
 918         }
 919     }
 920 
 921     private void postMouseEnteredEvent(Component target, long when, int modifiers,
 922                                        Point loc, int xAbs, int yAbs,
 923                                        int clickCount, boolean popupTrigger, int button) {
 924 
 925         updateSecurityWarningVisibility();
 926 
 927         postEvent(new MouseEvent(target,
 928                 MouseEvent.MOUSE_ENTERED,
 929                 when, modifiers,
 930                 loc.x, loc.y, xAbs, yAbs,
 931                 clickCount, popupTrigger, button));
 932     }
 933 
 934     private void postMouseExitedEvent(Component target, long when, int modifiers,
 935                                       Point loc, int xAbs, int yAbs,
 936                                       int clickCount, boolean popupTrigger, int button) {
 937 
 938         updateSecurityWarningVisibility();
 939 
 940         postEvent(new MouseEvent(target,
 941                 MouseEvent.MOUSE_EXITED,
 942                 when, modifiers,
 943                 loc.x, loc.y, xAbs, yAbs,
 944                 clickCount, popupTrigger, button));
 945     }
 946 
 947     @Override
 948     public void notifyMouseWheelEvent(long when, int x, int y, int modifiers,
 949                                       int scrollType, int scrollAmount,
 950                                       int wheelRotation, double preciseWheelRotation,
 951                                       byte[] bdata)
 952     {
 953         // TODO: could we just use the last mouse event target here?
 954         Rectangle r = getBounds();
 955         // findPeerAt() expects parent coordinates
 956         final LWComponentPeer<?, ?> targetPeer = findPeerAt(r.x + x, r.y + y);
 957         if (targetPeer == null || !targetPeer.isEnabled()) {
 958             return;
 959         }
 960 
 961         Point lp = targetPeer.windowToLocal(x, y, this);
 962         // TODO: fill "bdata" member of AWTEvent
 963         // TODO: screenX/screenY
 964         postEvent(new MouseWheelEvent(targetPeer.getTarget(),
 965                                       MouseEvent.MOUSE_WHEEL,
 966                                       when, modifiers,
 967                                       lp.x, lp.y,
 968                                       0, 0, /* screenX, Y */
 969                                       0 /* clickCount */, false /* popupTrigger */,
 970                                       scrollType, scrollAmount,
 971                                       wheelRotation, preciseWheelRotation));
 972     }
 973 
 974     /*
 975      * Called by the delegate when a key is pressed.
 976      */
 977     @Override
 978     public void notifyKeyEvent(int id, long when, int modifiers,
 979                                int keyCode, char keyChar, int keyLocation)
 980     {
 981         LWKeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
 982         Component focusOwner = kfmPeer.getCurrentFocusOwner();
 983 
 984         if (focusOwner == null) {
 985             focusOwner = kfmPeer.getCurrentFocusedWindow();
 986             if (focusOwner == null) {
 987                 focusOwner = this.getTarget();
 988             }
 989         }
 990 
 991         KeyEvent keyEvent = new KeyEvent(focusOwner, id, when, modifiers,
 992             keyCode, keyChar, keyLocation);
 993         AWTAccessor.getKeyEventAccessor().setExtendedKeyCode(keyEvent,
 994                 (keyChar == KeyEvent.CHAR_UNDEFINED) ? keyCode
 995                 : ExtendedKeyCodes.getExtendedKeyCodeForChar(keyChar));
 996         postEvent(keyEvent);
 997     }
 998 
 999     // ---- UTILITY METHODS ---- //
1000 
1001     private void activateDisplayListener() {
1002         final GraphicsEnvironment ge =
1003                 GraphicsEnvironment.getLocalGraphicsEnvironment();
1004         ((SunGraphicsEnvironment) ge).addDisplayChangedListener(this);
1005     }
1006 
1007     private void deactivateDisplayListener() {
1008         final GraphicsEnvironment ge =
1009                 GraphicsEnvironment.getLocalGraphicsEnvironment();
1010         ((SunGraphicsEnvironment) ge).removeDisplayChangedListener(this);
1011     }
1012 
1013     private void postWindowStateChangedEvent(int newWindowState) {
1014         if (getTarget() instanceof Frame) {
1015             AWTAccessor.getFrameAccessor().setExtendedState(
1016                     (Frame)getTarget(), newWindowState);
1017         }
1018 
1019         WindowEvent stateChangedEvent = new WindowEvent(getTarget(),
1020                 WindowEvent.WINDOW_STATE_CHANGED,
1021                 windowState, newWindowState);
1022         postEvent(stateChangedEvent);
1023         windowState = newWindowState;
1024 
1025         updateSecurityWarningVisibility();
1026     }
1027 
1028     private static int getGraphicsConfigScreen(GraphicsConfiguration gc) {
1029         // TODO: this method can be implemented in a more
1030         // efficient way by forwarding to the delegate
1031         GraphicsDevice gd = gc.getDevice();
1032         GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
1033         GraphicsDevice[] gds = ge.getScreenDevices();
1034         for (int i = 0; i < gds.length; i++) {
1035             if (gds[i] == gd) {
1036                 return i;
1037             }
1038         }
1039         // Should never happen if gc is a screen device config
1040         return 0;
1041     }
1042 
1043     /*
1044      * This method is called when window's graphics config is changed from
1045      * the app code (e.g. when the window is made non-opaque) or when
1046      * the window is moved to another screen by user.
1047      *
1048      * Returns true if the graphics config has been changed, false otherwise.
1049      */
1050     private boolean setGraphicsConfig(GraphicsConfiguration gc) {
1051         synchronized (getStateLock()) {
1052             if (graphicsConfig == gc) {
1053                 return false;
1054             }
1055             // If window's graphics config is changed from the app code, the
1056             // config correspond to the same device as before; when the window
1057             // is moved by user, graphicsDevice is updated in notifyReshape().
1058             // In either case, there's nothing to do with screenOn here
1059             graphicsConfig = gc;
1060         }
1061         // SurfaceData is replaced later in updateGraphicsData()
1062         return true;
1063     }
1064 
1065     /**
1066      * Returns true if the GraphicsDevice has been changed, false otherwise.
1067      */
1068     public boolean updateGraphicsDevice() {
1069         GraphicsDevice newGraphicsDevice = platformWindow.getGraphicsDevice();
1070         synchronized (getStateLock()) {
1071             if (graphicsDevice == newGraphicsDevice) {
1072                 return false;
1073             }
1074             graphicsDevice = newGraphicsDevice;
1075         }
1076 
1077         final GraphicsConfiguration newGC = newGraphicsDevice.getDefaultConfiguration();
1078 
1079         if (!setGraphicsConfig(newGC)) return false;
1080 
1081         SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() {
1082             public void run() {
1083                 AWTAccessor.getComponentAccessor().setGraphicsConfiguration(getTarget(), newGC);
1084             }
1085         });
1086         return true;
1087     }
1088 
1089     @Override
1090     public final void displayChanged() {
1091         if (updateGraphicsDevice()) {
1092             updateMinimumSize();
1093         }
1094 
1095         updateMaximizedBounds();
1096 
1097         // Replace surface unconditionally, because internal state of the
1098         // GraphicsDevice could be changed.
1099         replaceSurfaceData();
1100         repaintPeer();
1101     }
1102 
1103     @Override
1104     public final void paletteChanged() {
1105         // components do not need to react to this event.
1106     }
1107 
1108     /*
1109      * May be called by delegate to provide SD to Java2D code.
1110      */
1111     public SurfaceData getSurfaceData() {
1112         synchronized (surfaceDataLock) {
1113             return surfaceData;
1114         }
1115     }
1116 
1117     private void replaceSurfaceData() {
1118         replaceSurfaceData(true);
1119     }
1120 
1121     private void replaceSurfaceData(final boolean blit) {
1122         synchronized (surfaceDataLock) {
1123             final SurfaceData oldData = getSurfaceData();
1124             surfaceData = platformWindow.replaceSurfaceData();
1125             final Rectangle size = getSize();
1126             if (getSurfaceData() != null && oldData != getSurfaceData()) {
1127                 clearBackground(size.width, size.height);
1128             }
1129 
1130             if (blit) {
1131                 blitSurfaceData(oldData, getSurfaceData());
1132             }
1133 
1134             if (oldData != null && oldData != getSurfaceData()) {
1135                 // TODO: drop oldData for D3D/WGL pipelines
1136                 // This can only happen when this peer is being created
1137                 oldData.flush();
1138             }
1139         }
1140         flushOnscreenGraphics();
1141     }
1142 
1143     private void blitSurfaceData(final SurfaceData src, final SurfaceData dst) {
1144         //TODO blit. proof-of-concept
1145         if (src != dst && src != null && dst != null
1146             && !(dst instanceof NullSurfaceData)
1147             && !(src instanceof NullSurfaceData)
1148             && src.getSurfaceType().equals(dst.getSurfaceType())
1149             && src.getDefaultScale() == dst.getDefaultScale()) {
1150             final Rectangle size = src.getBounds();
1151             final Blit blit = Blit.locate(src.getSurfaceType(),
1152                                           CompositeType.Src,
1153                                           dst.getSurfaceType());
1154             if (blit != null) {
1155                 blit.Blit(src, dst, AlphaComposite.Src, null, 0, 0, 0, 0,
1156                           size.width, size.height);
1157             }
1158         }
1159     }
1160 
1161     /**
1162      * Request the window insets from the delegate and compares it with the
1163      * current one. This method is mostly called by the delegate, e.g. when the
1164      * window state is changed and insets should be recalculated.
1165      * <p/>
1166      * This method may be called on the toolkit thread.
1167      */
1168     public final boolean updateInsets(final Insets newInsets) {
1169         synchronized (getStateLock()) {
1170             if (insets.equals(newInsets)) {
1171                 return false;
1172             }
1173             insets = newInsets;
1174         }
1175         return true;
1176     }
1177 
1178     public static LWWindowPeer getWindowUnderCursor() {
1179         return lastCommonMouseEventPeer != null ? lastCommonMouseEventPeer.getWindowPeerOrSelf() : null;
1180     }
1181 
1182     public static LWComponentPeer<?, ?> getPeerUnderCursor() {
1183         return lastCommonMouseEventPeer;
1184     }
1185 
1186     /*
1187      * Requests platform to set native focus on a frame/dialog.
1188      * In case of a simple window, triggers appropriate java focus change.
1189      */
1190     public boolean requestWindowFocus(CausedFocusEvent.Cause cause) {
1191         if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1192             focusLog.fine("requesting native focus to " + this);
1193         }
1194 
1195         if (!focusAllowedFor()) {
1196             focusLog.fine("focus is not allowed");
1197             return false;
1198         }
1199 
1200         if (platformWindow.rejectFocusRequest(cause)) {
1201             return false;
1202         }
1203 
1204         AppContext targetAppContext = AWTAccessor.getComponentAccessor().getAppContext(getTarget());
1205         KeyboardFocusManager kfm = AWTAccessor.getKeyboardFocusManagerAccessor()
1206                 .getCurrentKeyboardFocusManager(targetAppContext);
1207         Window currentActive = kfm.getActiveWindow();
1208 
1209 
1210         Window opposite = LWKeyboardFocusManagerPeer.getInstance().
1211             getCurrentFocusedWindow();
1212 
1213         // Make the owner active window.
1214         if (isSimpleWindow()) {
1215             LWWindowPeer owner = getOwnerFrameDialog(this);
1216 
1217             // If owner is not natively active, request native
1218             // activation on it w/o sending events up to java.
1219             if (owner != null && !owner.platformWindow.isActive()) {
1220                 if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1221                     focusLog.fine("requesting native focus to the owner " + owner);
1222                 }
1223                 LWWindowPeer currentActivePeer = currentActive == null ? null :
1224                 (LWWindowPeer) AWTAccessor.getComponentAccessor().getPeer(
1225                         currentActive);
1226 
1227                 // Ensure the opposite is natively active and suppress sending events.
1228                 if (currentActivePeer != null && currentActivePeer.platformWindow.isActive()) {
1229                     if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1230                         focusLog.fine("the opposite is " + currentActivePeer);
1231                     }
1232                     currentActivePeer.skipNextFocusChange = true;
1233                 }
1234                 owner.skipNextFocusChange = true;
1235 
1236                 owner.platformWindow.requestWindowFocus();
1237             }
1238 
1239             // DKFM will synthesize all the focus/activation events correctly.
1240             changeFocusedWindow(true, opposite);
1241             return true;
1242 
1243         // In case the toplevel is active but not focused, change focus directly,
1244         // as requesting native focus on it will not have effect.
1245         } else if (getTarget() == currentActive && !getTarget().hasFocus()) {
1246 
1247             changeFocusedWindow(true, opposite);
1248             return true;
1249         }
1250 
1251         return platformWindow.requestWindowFocus();
1252     }
1253 
1254     protected boolean focusAllowedFor() {
1255         Window window = getTarget();
1256         // TODO: check if modal blocked
1257         return window.isVisible() && window.isEnabled() && isFocusableWindow();
1258     }
1259 
1260     private boolean isFocusableWindow() {
1261         boolean focusable  = targetFocusable;
1262         if (isSimpleWindow()) {
1263             LWWindowPeer ownerPeer = getOwnerFrameDialog(this);
1264             if (ownerPeer == null) {
1265                 return false;
1266             }
1267             return focusable && ownerPeer.targetFocusable;
1268         }
1269         return focusable;
1270     }
1271 
1272     public boolean isSimpleWindow() {
1273         Window window = getTarget();
1274         return !(window instanceof Dialog || window instanceof Frame);
1275     }
1276 
1277     @Override
1278     public void emulateActivation(boolean activate) {
1279         changeFocusedWindow(activate, null);
1280     }
1281 
1282     @SuppressWarnings("deprecation")
1283     private boolean isOneOfOwnersOf(LWWindowPeer peer) {
1284         Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1285         while (owner != null) {
1286             final ComponentAccessor acc = AWTAccessor.getComponentAccessor();
1287             if (acc.getPeer(owner) == this) {
1288                 return true;
1289             }
1290             owner = owner.getOwner();
1291         }
1292         return false;
1293     }
1294 
1295     /*
1296      * Changes focused window on java level.
1297      */
1298     protected void changeFocusedWindow(boolean becomesFocused, Window opposite) {
1299         if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1300             focusLog.fine((becomesFocused?"gaining":"loosing") + " focus window: " + this);
1301         }
1302         if (skipNextFocusChange) {
1303             focusLog.fine("skipping focus change");
1304             skipNextFocusChange = false;
1305             return;
1306         }
1307         if (!isFocusableWindow() && becomesFocused) {
1308             focusLog.fine("the window is not focusable");
1309             return;
1310         }
1311         if (becomesFocused) {
1312             synchronized (getPeerTreeLock()) {
1313                 if (blocker != null) {
1314                     if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
1315                         focusLog.finest("the window is blocked by " + blocker);
1316                     }
1317                     return;
1318                 }
1319             }
1320         }
1321 
1322         // Note, the method is not called:
1323         // - when the opposite (gaining focus) window is an owned/owner window.
1324         // - for a simple window in any case.
1325         if (!becomesFocused &&
1326             (isGrabbing() || this.isOneOfOwnersOf(grabbingWindow)))
1327         {
1328             if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1329                 focusLog.fine("ungrabbing on " + grabbingWindow);
1330             }
1331             // ungrab a simple window if its owner looses activation.
1332             grabbingWindow.ungrab();
1333         }
1334 
1335         KeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
1336 
1337         if (!becomesFocused && kfmPeer.getCurrentFocusedWindow() != getTarget()) {
1338             // late window focus lost event - ingoring
1339             return;
1340         }
1341 
1342         kfmPeer.setCurrentFocusedWindow(becomesFocused ? getTarget() : null);
1343 
1344         int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS;
1345         WindowEvent windowEvent = new TimedWindowEvent(getTarget(), eventID, opposite, System.currentTimeMillis());
1346 
1347         // TODO: wrap in SequencedEvent
1348         postEvent(windowEvent);
1349     }
1350 
1351     /*
1352      * Retrieves the owner of the peer.
1353      * Note: this method returns the owner which can be activated, (i.e. the instance
1354      * of Frame or Dialog may be returned).
1355      */
1356     static LWWindowPeer getOwnerFrameDialog(LWWindowPeer peer) {
1357         Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1358         while (owner != null && !(owner instanceof Frame || owner instanceof Dialog)) {
1359             owner = owner.getOwner();
1360         }
1361         return owner == null ? null : AWTAccessor.getComponentAccessor()
1362                                                  .getPeer(owner);
1363     }
1364 
1365     /**
1366      * Returns the foremost modal blocker of this window, or null.
1367      */
1368     public LWWindowPeer getBlocker() {
1369         synchronized (getPeerTreeLock()) {
1370             LWWindowPeer blocker = this.blocker;
1371             if (blocker == null) {
1372                 return null;
1373             }
1374             while (blocker.blocker != null) {
1375                 blocker = blocker.blocker;
1376             }
1377             return blocker;
1378         }
1379     }
1380 
1381     @Override
1382     public void enterFullScreenMode() {
1383         platformWindow.enterFullScreenMode();
1384         updateSecurityWarningVisibility();
1385     }
1386 
1387     @Override
1388     public void exitFullScreenMode() {
1389         platformWindow.exitFullScreenMode();
1390         updateSecurityWarningVisibility();
1391     }
1392 
1393     public long getLayerPtr() {
1394         return getPlatformWindow().getLayerPtr();
1395     }
1396 
1397     void grab() {
1398         if (grabbingWindow != null && !isGrabbing()) {
1399             grabbingWindow.ungrab();
1400         }
1401         grabbingWindow = this;
1402     }
1403 
1404     final void ungrab(boolean doPost) {
1405         if (isGrabbing()) {
1406             grabbingWindow = null;
1407             if (doPost) {
1408                 postEvent(new UngrabEvent(getTarget()));
1409             }
1410         }
1411     }
1412 
1413     void ungrab() {
1414         ungrab(true);
1415     }
1416 
1417     private boolean isGrabbing() {
1418         return this == grabbingWindow;
1419     }
1420 
1421     public PeerType getPeerType() {
1422         return peerType;
1423     }
1424 
1425     public void updateSecurityWarningVisibility() {
1426         if (warningWindow == null) {
1427             return;
1428         }
1429 
1430         if (!isVisible()) {
1431             return; // The warning window should already be hidden.
1432         }
1433 
1434         boolean show = false;
1435 
1436         if (!platformWindow.isFullScreenMode()) {
1437             if (isVisible()) {
1438                 if (LWKeyboardFocusManagerPeer.getInstance().getCurrentFocusedWindow() ==
1439                         getTarget()) {
1440                     show = true;
1441                 }
1442 
1443                 if (platformWindow.isUnderMouse() || warningWindow.isUnderMouse()) {
1444                     show = true;
1445                 }
1446             }
1447         }
1448 
1449         warningWindow.setVisible(show, true);
1450     }
1451 
1452     @Override
1453     public String toString() {
1454         return super.toString() + " [target is " + getTarget() + "]";
1455     }
1456 }
--- EOF ---