1 /*
   2  * Copyright (c) 2013, 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 javafx.embed.swing;
  27 
  28 import com.sun.javafx.geom.BaseBounds;
  29 import com.sun.javafx.geom.transform.BaseTransform;
  30 import com.sun.javafx.jmx.MXNodeAlgorithm;
  31 import com.sun.javafx.jmx.MXNodeAlgorithmContext;
  32 import com.sun.javafx.scene.DirtyBits;
  33 import com.sun.javafx.sg.prism.NGExternalNode;
  34 import com.sun.javafx.sg.prism.NGNode;
  35 import com.sun.javafx.stage.FocusUngrabEvent;
  36 import javafx.application.Platform;
  37 import javafx.beans.InvalidationListener;
  38 import javafx.beans.Observable;
  39 import javafx.beans.value.ChangeListener;
  40 import javafx.beans.value.ObservableValue;
  41 import javafx.event.EventHandler;
  42 import javafx.geometry.Point2D;
  43 import javafx.scene.*;

  44 import javafx.scene.input.KeyCode;
  45 import javafx.scene.input.KeyEvent;
  46 import javafx.scene.input.MouseButton;
  47 import javafx.scene.input.MouseEvent;
  48 import javafx.stage.Window;
  49 import sun.awt.UngrabEvent;
  50 import sun.swing.JLightweightFrame;
  51 import sun.swing.LightweightContent;
  52 
  53 import javax.swing.*;
  54 import java.awt.*;
  55 import java.awt.event.WindowEvent;
  56 import java.awt.event.WindowFocusListener;
  57 import java.nio.IntBuffer;
  58 import java.security.AccessController;
  59 import java.security.PrivilegedAction;
  60 import java.util.ArrayList;
  61 import java.util.List;
  62 import java.util.concurrent.locks.ReentrantLock;
  63 
  64 /**
  65  * This class is used to embed a Swing content into a JavaFX application.
  66  * The content to be displayed is specified with the {@link #setContent} method
  67  * that accepts an instance of Swing {@code JComponent}. The hierarchy of components
  68  * contained in the {@code JComponent} instance should not contain any heavyweight
  69  * components, otherwise {@code SwingNode} may fail to paint it. The content gets
  70  * repainted automatically. All the input and focus events are forwarded to the
  71  * {@code JComponent} instance transparently to the developer.
  72  * <p>
  73  * Here is a typical pattern which demonstrates how {@code SwingNode} can be used:
  74  * <pre>
  75  *     public class SwingFx extends Application {
  76  *
  77  *         private SwingNode swingNode;
  78  *
  79  *         &#064;Override
  80  *         public void start(Stage stage) {
  81  *             swingNode = new SwingNode();
  82  *
  83  *             createAndSetSwingContent();
  84  *
  85  *             StackPane pane = new StackPane();
  86  *             pane.getChildren().add(swingNode);
  87  *
  88  *             stage.setScene(new Scene(pane, 100, 50));
  89  *             stage.show();
  90  *         }
  91  *
  92  *         private void createAndSetSwingContent() {
  93  *             SwingUtilities.invokeLater(new Runnable() {
  94  *                 &#064;Override
  95  *                 public void run() {
  96  *                     swingNode.setContent(new JButton("Click me!"));
  97  *                 }
  98  *             });
  99  *         }
 100  *     }
 101  * </pre>
 102  * @since JavaFX 8.0
 103  */
 104 public class SwingNode extends Node {
 105 
 106     private double width;
 107     private double height;
 108     
 109     private double prefWidth;
 110     private double prefHeight;
 111     private double maxWidth;
 112     private double maxHeight;
 113     private double minWidth;
 114     private double minHeight;
 115 
 116     private volatile JComponent content;
 117     private volatile JLightweightFrame lwFrame;
 118 
 119     private volatile NGExternalNode peer;
 120 
 121     private final ReentrantLock paintLock = new ReentrantLock();
 122 
 123     private boolean skipBackwardUnrgabNotification;
 124     private boolean grabbed; // lwframe initiated grab
 125     
 126     /**
 127      * Constructs a new instance of {@code SwingNode}.
 128      */
 129     public SwingNode() {
 130         setFocusTraversable(true);
 131         setEventHandler(MouseEvent.ANY, new SwingMouseEventHandler());
 132         setEventHandler(KeyEvent.ANY, new SwingKeyEventHandler());
 133 
 134         focusedProperty().addListener(new ChangeListener<Boolean>() {
 135             @Override
 136             public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, final Boolean newValue) {
 137                 activateLwFrame(newValue);
 138             }
 139         });
 140     }
 141 
 142     /**
 143      * Attaches a {@code JComponent} instance to display in this {@code SwingNode}.
 144      * <p>
 145      * The method can be called either on the JavaFX Application thread or the Swing thread.
 146      * Note however, that access to a Swing component must occur from the Swing thread according
 147      * to the Swing threading restrictions.
 148      *
 149      * @param content a Swing component to display in this {@code SwingNode}
 150      *
 151      * @see java.awt.EventQueue#isDispatchThread()
 152      * @see javafx.application.Platform#isFxApplicationThread()
 153      */
 154     public void setContent(final JComponent content) {
 155         this.content = content;
 156 
 157         invokeOnEDT(new Runnable() {
 158             @Override
 159             public void run() {
 160                 setContentImpl(content);
 161             }
 162         });
 163     }
 164 
 165    /**
 166      * Returns the {@code JComponent} instance attached to this {@code SwingNode}.
 167      * <p>
 168      * The method can be called either on the JavaFX Application thread or the Swing thread.
 169      * Note however, that access to a Swing component must occur from the Swing thread according
 170      * to the Swing threading restrictions.
 171      *
 172      * @see java.awt.EventQueue#isDispatchThread()
 173      * @see javafx.application.Platform#isFxApplicationThread()
 174      *
 175      * @return the Swing component attached to this {@code SwingNode}
 176      */
 177     public JComponent getContent() {
 178         return content;
 179     }
 180 
 181     /*
 182      * Called on Swing thread
 183      */
 184     private void setContentImpl(JComponent content) {
 185         if (lwFrame != null) {
 186             lwFrame.dispose();
 187             lwFrame = null;
 188         }
 189         if (content != null) {
 190             lwFrame = new JLightweightFrame();
 191 
 192             lwFrame.addWindowFocusListener(new WindowFocusListener() {
 193                 @Override
 194                 public void windowGainedFocus(WindowEvent e) {
 195                 }
 196                 @Override
 197                 public void windowLostFocus(WindowEvent e) {
 198                     Platform.runLater(new Runnable() {
 199                         @Override
 200                         public void run() {
 201                             ungrabFocus(true);
 202                         }
 203                     });
 204                 }
 205             });
 206 
 207             lwFrame.setContent(new SwingNodeContent(content));
 208             lwFrame.setVisible(true);
 209 
 210             Platform.runLater(new Runnable() {
 211                 @Override
 212                 public void run() {
 213                     locateLwFrame(); // initialize location
 214 
 215                     if (focusedProperty().get()) {
 216                         activateLwFrame(true);
 217                     }
 218                 }
 219             });
 220         }
 221     }
 222 
 223     private List<Runnable> peerRequests = new ArrayList<>();
 224 
 225     /*
 226      * Called on Swing thread
 227      */
 228     void setImageBuffer(final int[] data,
 229                         final int x, final int y,
 230                         final int w, final int h,
 231                         final int linestride)
 232     {
 233         Runnable r = new Runnable() {
 234             @Override
 235             public void run() {
 236                 peer.setImageBuffer(IntBuffer.wrap(data), x, y, w, h, linestride);
 237             }
 238         };
 239         if (peer != null) {
 240             Platform.runLater(r);
 241         } else {
 242             peerRequests.clear();
 243             peerRequests.add(r);
 244         }
 245     }
 246 
 247     /*
 248      * Called on Swing thread
 249      */
 250     void setImageBounds(final int x, final int y, final int w, final int h) {
 251         Runnable r = new Runnable() {
 252             @Override
 253             public void run() {
 254                 peer.setImageBounds(x, y, w, h);
 255             }
 256         };
 257         if (peer != null) {
 258             Platform.runLater(r);
 259         } else {
 260             peerRequests.add(r);
 261         }
 262     }
 263 
 264     /*
 265      * Called on Swing thread
 266      */
 267     void repaintDirtyRegion(final int dirtyX, final int dirtyY, final int dirtyWidth, final int dirtyHeight) {
 268         Runnable r = new Runnable() {
 269             @Override
 270             public void run() {
 271                 peer.repaintDirtyRegion(dirtyX, dirtyY, dirtyWidth, dirtyHeight);
 272                 impl_markDirty(DirtyBits.NODE_CONTENTS);
 273             }
 274         };
 275         if (peer != null) {
 276             Platform.runLater(r);
 277         } else {
 278             peerRequests.add(r);
 279         }
 280     }
 281 
 282     @Override public boolean isResizable() {
 283         return true;
 284     }
 285 
 286     /**
 287      * Invoked by the {@code SwingNode}'s parent during layout to set the {@code SwingNode}'s
 288      * width and height. <b>Applications should not invoke this method directly</b>.
 289      * If an application needs to directly set the size of the {@code SwingNode}, it should
 290      * set the Swing component's minimum/preferred/maximum size constraints which will
 291      * be propagated correspondingly to the {@code SwingNode} and it's parent will honor those
 292      * settings during layout.
 293      *
 294      * @param width the target layout bounds width
 295      * @param height the target layout bounds height
 296      */    
 297     @Override public void resize(final double width, final double height) {
 298         super.resize(width, height);
 299         if (width != this.width || height != this.height) {
 300             this.width = width;
 301             this.height = height;
 302             impl_geomChanged();
 303             impl_markDirty(DirtyBits.NODE_GEOMETRY);
 304             SwingUtilities.invokeLater(new Runnable() {
 305                 @Override
 306                 public void run() {
 307                     if (lwFrame != null) {
 308                         lwFrame.setSize((int)width, (int)height);
 309                     }
 310                 }
 311             });
 312         }
 313     }
 314 
 315     /**
 316      * Returns the {@code SwingNode}'s preferred width for use in layout calculations.
 317      * This value corresponds to the preferred width of the Swing component.
 318      * 
 319      * @return the preferred width that the node should be resized to during layout
 320      */
 321     @Override
 322     public double prefWidth(double height) {
 323         return prefWidth;
 324     }
 325 
 326     /**
 327      * Returns the {@code SwingNode}'s preferred height for use in layout calculations.
 328      * This value corresponds to the preferred height of the Swing component.
 329      * 
 330      * @return the preferred height that the node should be resized to during layout
 331      */
 332     @Override
 333     public double prefHeight(double width) {
 334         return prefHeight;
 335     }
 336     
 337     /**
 338      * Returns the {@code SwingNode}'s maximum width for use in layout calculations.
 339      * This value corresponds to the maximum width of the Swing component.
 340      * 
 341      * @return the maximum width that the node should be resized to during layout
 342      */
 343     @Override public double maxWidth(double height) {
 344         return maxWidth;
 345     }
 346     
 347     /**
 348      * Returns the {@code SwingNode}'s maximum height for use in layout calculations.
 349      * This value corresponds to the maximum height of the Swing component.
 350      * 
 351      * @return the maximum height that the node should be resized to during layout
 352      */    
 353     @Override public double maxHeight(double width) {
 354         return maxHeight;
 355     }
 356     
 357     /**
 358      * Returns the {@code SwingNode}'s minimum width for use in layout calculations.
 359      * This value corresponds to the minimum width of the Swing component.
 360      * 
 361      * @return the minimum width that the node should be resized to during layout
 362      */    
 363     @Override public double minWidth(double height) {
 364         return minWidth;
 365     }
 366     
 367     /**
 368      * Returns the {@code SwingNode}'s minimum height for use in layout calculations.
 369      * This value corresponds to the minimum height of the Swing component.
 370      * 
 371      * @return the minimum height that the node should be resized to during layout
 372      */    
 373     @Override public double minHeight(double width) {
 374         return minHeight;
 375     }
 376 
 377     @Override
 378     protected boolean impl_computeContains(double localX, double localY) {
 379         return true;
 380     }
 381 
 382     private InvalidationListener locationListener = new InvalidationListener() {
 383         @Override
 384         public void invalidated(Observable observable) {
 385             locateLwFrame();
 386         }
 387     };
 388 
 389     private EventHandler<FocusUngrabEvent> ungrabHandler = new EventHandler<FocusUngrabEvent>() {
 390         @Override
 391         public void handle(FocusUngrabEvent event) {
 392             if (!skipBackwardUnrgabNotification) {
 393                 AccessController.doPrivileged(new PostEventAction(new UngrabEvent(lwFrame)));
 394             }
 395         }
 396     };
 397 
 398     private ChangeListener<Boolean> windowVisibleListener = new ChangeListener<Boolean>() {
 399         @Override
 400         public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
 401             if (!newValue) {
 402                 disposeLwFrame();
 403 
 404             } else {
 405                 setContent(content);
 406             }
 407         }
 408     };
 409 
 410     private void removeListeners(Scene scene) {
 411         Window window = scene.getWindow();
 412         if (window != null) {
 413             window.xProperty().removeListener(locationListener);
 414             window.yProperty().removeListener(locationListener);
 415             window.removeEventHandler(FocusUngrabEvent.FOCUS_UNGRAB, ungrabHandler);
 416             window.showingProperty().removeListener(windowVisibleListener);
 417         }
 418     }
 419 
 420     private void addListeners(Scene scene) {
 421         Window window = scene.getWindow();
 422         if (window != null) {
 423             window.xProperty().addListener(locationListener);
 424             window.yProperty().addListener(locationListener);
 425             window.addEventHandler(FocusUngrabEvent.FOCUS_UNGRAB, ungrabHandler);
 426             window.showingProperty().addListener(windowVisibleListener);
 427         }
 428     }
 429 
 430     @Override
 431     protected NGNode impl_createPeer() {
 432         peer = new NGExternalNode();
 433         peer.setLock(paintLock);
 434         for (Runnable request : peerRequests) {
 435             request.run();
 436         }
 437         peerRequests = null;
 438 
 439         if (content != null) {
 440             setContent(content); // in case the Node is re-added to Scene
 441         }
 442         addListeners(getScene());
 443 
 444         sceneProperty().addListener(new ChangeListener<Scene>() {
 445             @Override
 446             public void changed(ObservableValue<? extends Scene> observable, Scene oldValue, Scene newValue) {
 447                 // Removed from scene, or added to another scene.
 448                 // The lwFrame will be recreated from impl_createPGNode().
 449                 removeListeners(oldValue);
 450                 disposeLwFrame();
 451             }
 452         });
 453 
 454         impl_treeVisibleProperty().addListener(new ChangeListener<Boolean>() {
 455             @Override
 456             public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
 457                 setLwFrameVisible(newValue);
 458             }
 459         });
 460 
 461         return peer;
 462     }
 463 
 464     @Override
 465     public void impl_updatePeer() {
 466         super.impl_updatePeer();
 467 
 468         if (impl_isDirty(DirtyBits.NODE_VISIBLE)
 469                 || impl_isDirty(DirtyBits.NODE_BOUNDS)) {
 470             locateLwFrame(); // initialize location
 471         }
 472         if (impl_isDirty(DirtyBits.NODE_CONTENTS)) {
 473             peer.markContentDirty();
 474         }
 475     }
 476 
 477     private void locateLwFrame() {
 478         if (getScene() == null
 479                 || lwFrame == null
 480                 || getScene().getWindow() == null
 481                 || !getScene().getWindow().isShowing()) {
 482             // Not initialized yet. Skip the update to set the real values later
 483             return;
 484         }
 485         final Point2D loc = localToScene(0, 0);
 486         final int windowX = (int)getScene().getWindow().getX();
 487         final int windowY = (int)getScene().getWindow().getY();
 488         final int sceneX = (int)getScene().getX();
 489         final int sceneY = (int)getScene().getY();
 490 
 491         invokeOnEDT(new Runnable() {
 492             @Override
 493             public void run() {
 494                 if (lwFrame != null) {
 495                     lwFrame.setLocation(windowX + sceneX + (int)loc.getX(),
 496                                         windowY + sceneY + (int)loc.getY());
 497                 }
 498             }
 499         });
 500     }
 501 
 502     private void activateLwFrame(final boolean activate) {
 503         if (lwFrame == null) {
 504             return;
 505         }
 506         invokeOnEDT(new Runnable() {
 507             @Override
 508             public void run() {
 509                 if (lwFrame != null) {
 510                     lwFrame.emulateActivation(activate);
 511                 }
 512             }
 513         });
 514     }
 515 
 516     private void disposeLwFrame() {
 517         if (lwFrame == null) {
 518             return;
 519         }
 520         invokeOnEDT(new Runnable() {
 521             @Override
 522             public void run() {
 523                 if (lwFrame != null) {
 524                     lwFrame.dispose();
 525                     lwFrame = null;
 526                 }
 527             }
 528         });
 529     }
 530 
 531     private void setLwFrameVisible(final boolean visible) {
 532         if (lwFrame == null) {
 533             return;
 534         }
 535         invokeOnEDT(new Runnable() {
 536             @Override
 537             public void run() {
 538                 if (lwFrame != null) {
 539                     lwFrame.setVisible(visible);
 540                 }
 541             }
 542         });
 543     }
 544 
 545     @Override
 546     public BaseBounds impl_computeGeomBounds(BaseBounds bounds, BaseTransform tx) {
 547         bounds.deriveWithNewBounds(0, 0, 0, (float)width, (float)height, 0);
 548         tx.transform(bounds, bounds);
 549         return bounds;
 550     }
 551 
 552     @Override
 553     public Object impl_processMXNode(MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx) {
 554         return alg.processLeafNode(this, ctx);
 555     }
 556 
 557     private class SwingNodeContent implements LightweightContent {
 558         private JComponent comp;
 559         public SwingNodeContent(JComponent comp) {
 560             this.comp = comp;
 561         }
 562         @Override
 563         public JComponent getComponent() {
 564             return comp;
 565         }
 566         @Override
 567         public void paintLock() {
 568             paintLock.lock();
 569         }
 570         @Override
 571         public void paintUnlock() {
 572             paintLock.unlock();
 573         }
 574         @Override
 575         public void imageBufferReset(int[] data, int x, int y, int width, int height, int linestride) {
 576             SwingNode.this.setImageBuffer(data, x, y, width, height, linestride);
 577         }
 578         @Override
 579         public void imageReshaped(int x, int y, int width, int height) {
 580             SwingNode.this.setImageBounds(x, y, width, height);
 581         }
 582         @Override
 583         public void imageUpdated(int dirtyX, int dirtyY, int dirtyWidth, int dirtyHeight) {
 584             SwingNode.this.repaintDirtyRegion(dirtyX, dirtyY, dirtyWidth, dirtyHeight);
 585         }
 586         @Override
 587         public void focusGrabbed() {
 588             Platform.runLater(new Runnable() {
 589                 @Override
 590                 public void run() {
 591                     if (getScene() != null &&
 592                         getScene().getWindow() != null &&
 593                         getScene().getWindow().impl_getPeer() != null)
 594                     {
 595                         getScene().getWindow().impl_getPeer().grabFocus();
 596                         grabbed = true;
 597                     }
 598                 }
 599             });
 600         }
 601         @Override
 602         public void focusUngrabbed() {
 603             Platform.runLater(new Runnable() {
 604                 @Override
 605                 public void run() {
 606                     ungrabFocus(false);
 607                 }
 608             });
 609         }
 610         @Override
 611         public void preferredSizeChanged(final int width, final int height) {
 612             Platform.runLater(new Runnable() {
 613                 @Override
 614                 public void run() {
 615                     SwingNode.this.prefWidth = width;
 616                     SwingNode.this.prefHeight = height;
 617                     SwingNode.this.impl_notifyLayoutBoundsChanged();
 618                 }
 619             });            
 620         }
 621         @Override
 622         public void maximumSizeChanged(final int width, final int height) {
 623             Platform.runLater(new Runnable() {
 624                 @Override
 625                 public void run() {
 626                     SwingNode.this.maxWidth = width;
 627                     SwingNode.this.maxHeight = height;
 628                     SwingNode.this.impl_notifyLayoutBoundsChanged();
 629                 }
 630             });            
 631         }
 632         @Override
 633         public void minimumSizeChanged(final int width, final int height) {
 634             Platform.runLater(new Runnable() {
 635                 @Override
 636                 public void run() {
 637                     SwingNode.this.minWidth = width;
 638                     SwingNode.this.minHeight = height;
 639                     SwingNode.this.impl_notifyLayoutBoundsChanged();
 640                 }
 641             });            
 642         }
 643         @Override
 644         public void invokeOnContentsThread(Runnable runnable) {
 645             Platform.runLater(runnable);
 646         }
 647     }
 648 
 649     private void ungrabFocus(boolean postUngrabEvent) {
 650         if (grabbed &&
 651             getScene() != null &&
 652             getScene().getWindow() != null &&
 653             getScene().getWindow().impl_getPeer() != null)
 654         {
 655             skipBackwardUnrgabNotification = !postUngrabEvent;
 656             getScene().getWindow().impl_getPeer().ungrabFocus();
 657             skipBackwardUnrgabNotification = false;
 658             grabbed = false;
 659         }
 660     }
 661 
 662     private class PostEventAction implements PrivilegedAction<Void> {
 663         private AWTEvent event;
 664         public PostEventAction(AWTEvent event) {
 665             this.event = event;
 666         }
 667         @Override
 668         public Void run() {
 669             EventQueue eq = Toolkit.getDefaultToolkit().getSystemEventQueue();
 670             eq.postEvent(event);
 671             return null;
 672         }
 673     }
 674 
 675     private class SwingMouseEventHandler implements EventHandler<MouseEvent> {
 676         @Override
 677         public void handle(MouseEvent event) {
 678             // Disable the FX cursor updates when mouse enters SwingNode and enable bask when exits
 679             if (event.getEventType() == MouseEvent.MOUSE_ENTERED) {
 680                 getScene().getWindow().impl_getPeer().setUpdatesCursor(false);
 681             } else if (event.getEventType() == MouseEvent.MOUSE_EXITED) {
 682                 getScene().getWindow().impl_getPeer().setUpdatesCursor(true);
 683             } else if (event.getEventType() == MouseEvent.MOUSE_PRESSED &&
 684                 !SwingNode.this.isFocused() && SwingNode.this.isFocusTraversable())
 685             {
 686                 SwingNode.this.requestFocus();
 687             }
 688             JLightweightFrame frame = lwFrame;
 689             if (frame == null) {
 690                 return;
 691             }
 692             int swingID = SwingEvents.fxMouseEventTypeToMouseID(event);
 693             if (swingID < 0) {
 694                 return;
 695             }
 696             int swingModifiers = SwingEvents.fxMouseModsToMouseMods(event);
 697             // TODO: popupTrigger
 698             boolean swingPopupTrigger = event.getButton() == MouseButton.SECONDARY;
 699             int swingButton = SwingEvents.fxMouseButtonToMouseButton(event);
 700             long swingWhen = System.currentTimeMillis();
 701             java.awt.event.MouseEvent mouseEvent =
 702                     new java.awt.event.MouseEvent(
 703                         frame, swingID, swingWhen, swingModifiers,
 704                         (int)event.getX(), (int)event.getY(), (int)event.getScreenX(), (int)event.getSceneY(),
 705                         event.getClickCount(), swingPopupTrigger, swingButton);
 706             AccessController.doPrivileged(new PostEventAction(mouseEvent));
 707         }
 708     }
 709 
 710     private class SwingKeyEventHandler implements EventHandler<KeyEvent> {
 711         @Override
 712         public void handle(KeyEvent event) {
 713             JLightweightFrame frame = lwFrame;
 714             if (frame == null) {
 715                 return;
 716             }
 717             if (event.getCharacter().isEmpty()) {
 718                 // TODO: should we post an "empty" character?
 719                 return;
 720             }
 721             // Don't let Arrows, Tab, Shift+Tab traverse focus out.
 722             if (event.getCode() == KeyCode.LEFT  ||
 723                 event.getCode() == KeyCode.RIGHT ||
 724                 event.getCode() == KeyCode.TAB)
 725             {
 726                 event.consume();
 727             }
 728 
 729             int swingID = SwingEvents.fxKeyEventTypeToKeyID(event);
 730             if (swingID < 0) {
 731                 return;
 732             }
 733             int swingModifiers = SwingEvents.fxKeyModsToKeyMods(event);
 734             int swingKeyCode = event.getCode().impl_getCode();
 735             char swingChar = event.getCharacter().charAt(0);
 736 
 737             // A workaround. Some swing L&F's process mnemonics on KEY_PRESSED,
 738             // for which swing provides a keychar. Extracting it from the text.
 739             if (event.getEventType() == javafx.scene.input.KeyEvent.KEY_PRESSED) {
 740                 String text = event.getText();
 741                 if (text.length() == 1) {
 742                     swingChar = text.charAt(0);
 743                 }
 744             }
 745             long swingWhen = System.currentTimeMillis();
 746             java.awt.event.KeyEvent keyEvent = new java.awt.event.KeyEvent(
 747                     frame, swingID, swingWhen, swingModifiers,
 748                     swingKeyCode, swingChar);
 749             AccessController.doPrivileged(new PostEventAction(keyEvent));
 750         }
 751     }
 752 
 753     private static void invokeOnEDT(final Runnable r) {
 754         if (SwingUtilities.isEventDispatchThread()) {
 755             r.run();
 756         } else {
 757             SwingUtilities.invokeLater(new Runnable() {
 758                 @Override
 759                 public void run() {
 760                     r.run();
 761                 }
 762             });
 763         }
 764     }
 765 }
--- EOF ---