1 /* 2 * Copyright (c) 1995, 2020, 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 java.awt; 27 28 import java.awt.event.ComponentEvent; 29 import java.awt.event.FocusEvent; 30 import java.awt.event.KeyEvent; 31 import java.awt.event.MouseWheelEvent; 32 import java.awt.event.WindowEvent; 33 import java.awt.event.WindowFocusListener; 34 import java.awt.event.WindowListener; 35 import java.awt.event.WindowStateListener; 36 import java.awt.geom.Path2D; 37 import java.awt.geom.Point2D; 38 import java.awt.im.InputContext; 39 import java.awt.image.BufferStrategy; 40 import java.awt.peer.ComponentPeer; 41 import java.awt.peer.WindowPeer; 42 import java.beans.PropertyChangeListener; 43 import java.io.IOException; 44 import java.io.ObjectInputStream; 45 import java.io.ObjectOutputStream; 46 import java.io.OptionalDataException; 47 import java.io.Serializable; 48 import java.lang.ref.WeakReference; 49 import java.lang.reflect.InvocationTargetException; 50 import java.security.AccessController; 51 import java.util.ArrayList; 52 import java.util.Arrays; 53 import java.util.EventListener; 54 import java.util.Locale; 55 import java.util.ResourceBundle; 56 import java.util.Set; 57 import java.util.Vector; 58 import java.util.concurrent.atomic.AtomicBoolean; 59 60 import javax.accessibility.Accessible; 61 import javax.accessibility.AccessibleContext; 62 import javax.accessibility.AccessibleRole; 63 import javax.accessibility.AccessibleState; 64 import javax.accessibility.AccessibleStateSet; 65 66 import sun.awt.AWTAccessor; 67 import sun.awt.AWTPermissions; 68 import sun.awt.AppContext; 69 import sun.awt.DebugSettings; 70 import sun.awt.SunToolkit; 71 import sun.awt.util.IdentityArrayList; 72 import sun.java2d.pipe.Region; 73 import sun.security.action.GetPropertyAction; 74 import sun.util.logging.PlatformLogger; 75 76 /** 77 * A {@code Window} object is a top-level window with no borders and no 78 * menubar. 79 * The default layout for a window is {@code BorderLayout}. 80 * <p> 81 * A window must have either a frame, dialog, or another window defined as its 82 * owner when it's constructed. 83 * <p> 84 * In a multi-screen environment, you can create a {@code Window} 85 * on a different screen device by constructing the {@code Window} 86 * with {@link #Window(Window, GraphicsConfiguration)}. The 87 * {@code GraphicsConfiguration} object is one of the 88 * {@code GraphicsConfiguration} objects of the target screen device. 89 * <p> 90 * In a virtual device multi-screen environment in which the desktop 91 * area could span multiple physical screen devices, the bounds of all 92 * configurations are relative to the virtual device coordinate system. 93 * The origin of the virtual-coordinate system is at the upper left-hand 94 * corner of the primary physical screen. Depending on the location of 95 * the primary screen in the virtual device, negative coordinates are 96 * possible, as shown in the following figure. 97 * <p> 98 * <img src="doc-files/MultiScreen.gif" 99 * alt="Diagram shows virtual device containing 4 physical screens. Primary 100 * physical screen shows coords (0,0), other screen shows (-80,-100)." 101 * style="margin: 7px 10px;"> 102 * <p> 103 * In such an environment, when calling {@code setLocation}, 104 * you must pass a virtual coordinate to this method. Similarly, 105 * calling {@code getLocationOnScreen} on a {@code Window} returns 106 * virtual device coordinates. Call the {@code getBounds} method 107 * of a {@code GraphicsConfiguration} to find its origin in the virtual 108 * coordinate system. 109 * <p> 110 * The following code sets the location of a {@code Window} 111 * at (10, 10) relative to the origin of the physical screen 112 * of the corresponding {@code GraphicsConfiguration}. If the 113 * bounds of the {@code GraphicsConfiguration} is not taken 114 * into account, the {@code Window} location would be set 115 * at (10, 10) relative to the virtual-coordinate system and would appear 116 * on the primary physical screen, which might be different from the 117 * physical screen of the specified {@code GraphicsConfiguration}. 118 * 119 * <pre> 120 * Window w = new Window(Window owner, GraphicsConfiguration gc); 121 * Rectangle bounds = gc.getBounds(); 122 * w.setLocation(10 + bounds.x, 10 + bounds.y); 123 * </pre> 124 * 125 * <p> 126 * Note: the location and size of top-level windows (including 127 * {@code Window}s, {@code Frame}s, and {@code Dialog}s) 128 * are under the control of the desktop's window management system. 129 * Calls to {@code setLocation}, {@code setSize}, and 130 * {@code setBounds} are requests (not directives) which are 131 * forwarded to the window management system. Every effort will be 132 * made to honor such requests. However, in some cases the window 133 * management system may ignore such requests, or modify the requested 134 * geometry in order to place and size the {@code Window} in a way 135 * that more closely matches the desktop settings. 136 * <p> 137 * Visual effects such as halos, shadows, motion effects and animations may be 138 * applied to the window by the desktop window management system. These are 139 * outside the knowledge and control of the AWT and so for the purposes of this 140 * specification are not considered part of the top-level window. 141 * <p> 142 * Due to the asynchronous nature of native event handling, the results 143 * returned by {@code getBounds}, {@code getLocation}, 144 * {@code getLocationOnScreen}, and {@code getSize} might not 145 * reflect the actual geometry of the Window on screen until the last 146 * request has been processed. During the processing of subsequent 147 * requests these values might change accordingly while the window 148 * management system fulfills the requests. 149 * <p> 150 * An application may set the size and location of an invisible 151 * {@code Window} arbitrarily, but the window management system may 152 * subsequently change its size and/or location when the 153 * {@code Window} is made visible. One or more {@code ComponentEvent}s 154 * will be generated to indicate the new geometry. 155 * <p> 156 * Windows are capable of generating the following WindowEvents: 157 * WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus. 158 * 159 * @author Sami Shaio 160 * @author Arthur van Hoff 161 * @see WindowEvent 162 * @see #addWindowListener 163 * @see java.awt.BorderLayout 164 * @since 1.0 165 */ 166 public class Window extends Container implements Accessible { 167 168 /** 169 * Enumeration of available <i>window types</i>. 170 * 171 * A window type defines the generic visual appearance and behavior of a 172 * top-level window. For example, the type may affect the kind of 173 * decorations of a decorated {@code Frame} or {@code Dialog} instance. 174 * <p> 175 * Some platforms may not fully support a certain window type. Depending on 176 * the level of support, some properties of the window type may be 177 * disobeyed. 178 * 179 * @see #getType 180 * @see #setType 181 * @since 1.7 182 */ 183 public static enum Type { 184 /** 185 * Represents a <i>normal</i> window. 186 * 187 * This is the default type for objects of the {@code Window} class or 188 * its descendants. Use this type for regular top-level windows. 189 */ 190 NORMAL, 191 192 /** 193 * Represents a <i>utility</i> window. 194 * 195 * A utility window is usually a small window such as a toolbar or a 196 * palette. The native system may render the window with smaller 197 * title-bar if the window is either a {@code Frame} or a {@code 198 * Dialog} object, and if it has its decorations enabled. 199 */ 200 UTILITY, 201 202 /** 203 * Represents a <i>popup</i> window. 204 * 205 * A popup window is a temporary window such as a drop-down menu or a 206 * tooltip. On some platforms, windows of that type may be forcibly 207 * made undecorated even if they are instances of the {@code Frame} or 208 * {@code Dialog} class, and have decorations enabled. 209 */ 210 POPUP 211 } 212 213 /** 214 * This represents the warning message that is 215 * to be displayed in a non secure window. ie : 216 * a window that has a security manager installed that denies 217 * {@code AWTPermission("showWindowWithoutWarningBanner")}. 218 * This message can be displayed anywhere in the window. 219 * 220 * @serial 221 * @see #getWarningString 222 */ 223 String warningString; 224 225 /** 226 * {@code icons} is the graphical way we can 227 * represent the frames and dialogs. 228 * {@code Window} can't display icon but it's 229 * being inherited by owned {@code Dialog}s. 230 * 231 * @serial 232 * @see #getIconImages 233 * @see #setIconImages 234 */ 235 transient java.util.List<Image> icons; 236 237 /** 238 * Holds the reference to the component which last had focus in this window 239 * before it lost focus. 240 */ 241 private transient Component temporaryLostComponent; 242 243 static boolean systemSyncLWRequests = false; 244 245 /** 246 * Focus transfers should be synchronous for lightweight component requests. 247 */ 248 boolean syncLWRequests = false; 249 transient boolean beforeFirstShow = true; 250 private transient boolean disposing = false; 251 transient WindowDisposerRecord disposerRecord = null; 252 253 static final int OPENED = 0x01; 254 255 /** 256 * An Integer value representing the Window State. 257 * 258 * @serial 259 * @since 1.2 260 * @see #show 261 */ 262 int state; 263 264 /** 265 * A boolean value representing Window always-on-top state 266 * @since 1.5 267 * @serial 268 * @see #setAlwaysOnTop 269 * @see #isAlwaysOnTop 270 */ 271 private boolean alwaysOnTop; 272 273 /** 274 * Contains all the windows that have a peer object associated, 275 * i. e. between addNotify() and removeNotify() calls. The list 276 * of all Window instances can be obtained from AppContext object. 277 * 278 * @since 1.6 279 */ 280 private static final IdentityArrayList<Window> allWindows = new IdentityArrayList<Window>(); 281 282 /** 283 * A vector containing all the windows this 284 * window currently owns. 285 * @since 1.2 286 * @see #getOwnedWindows 287 */ 288 transient Vector<WeakReference<Window>> ownedWindowList = 289 new Vector<WeakReference<Window>>(); 290 291 /* 292 * We insert a weak reference into the Vector of all Windows in AppContext 293 * instead of 'this' so that garbage collection can still take place 294 * correctly. 295 */ 296 private transient WeakReference<Window> weakThis; 297 298 transient boolean showWithParent; 299 300 /** 301 * Contains the modal dialog that blocks this window, or null 302 * if the window is unblocked. 303 * 304 * @since 1.6 305 */ 306 transient Dialog modalBlocker; 307 308 /** 309 * @serial 310 * 311 * @see java.awt.Dialog.ModalExclusionType 312 * @see #getModalExclusionType 313 * @see #setModalExclusionType 314 * 315 * @since 1.6 316 */ 317 Dialog.ModalExclusionType modalExclusionType; 318 319 transient WindowListener windowListener; 320 transient WindowStateListener windowStateListener; 321 transient WindowFocusListener windowFocusListener; 322 323 transient InputContext inputContext; 324 private transient Object inputContextLock = new Object(); 325 326 /** 327 * Unused. Maintained for serialization backward-compatibility. 328 * 329 * @serial 330 * @since 1.2 331 */ 332 private FocusManager focusMgr; 333 334 /** 335 * Indicates whether this Window can become the focused Window. 336 * 337 * @serial 338 * @see #getFocusableWindowState 339 * @see #setFocusableWindowState 340 * @since 1.4 341 */ 342 private boolean focusableWindowState = true; 343 344 /** 345 * Indicates whether this window should receive focus on 346 * subsequently being shown (with a call to {@code setVisible(true)}), or 347 * being moved to the front (with a call to {@code toFront()}). 348 * 349 * @serial 350 * @see #setAutoRequestFocus 351 * @see #isAutoRequestFocus 352 * @since 1.7 353 */ 354 private volatile boolean autoRequestFocus = true; 355 356 /* 357 * Indicates that this window is being shown. This flag is set to true at 358 * the beginning of show() and to false at the end of show(). 359 * 360 * @see #show() 361 * @see Dialog#shouldBlock 362 */ 363 transient boolean isInShow = false; 364 365 /** 366 * The opacity level of the window 367 * 368 * @serial 369 * @see #setOpacity(float) 370 * @see #getOpacity() 371 * @since 1.7 372 */ 373 private volatile float opacity = 1.0f; 374 375 /** 376 * The shape assigned to this window. This field is set to {@code null} if 377 * no shape is set (rectangular window). 378 * 379 * @serial 380 * @see #getShape() 381 * @see #setShape(Shape) 382 * @since 1.7 383 */ 384 @SuppressWarnings("serial") // Not statically typed as Serializable 385 private Shape shape = null; 386 387 private static final String base = "win"; 388 private static int nameCounter = 0; 389 390 /* 391 * JDK 1.1 serialVersionUID 392 */ 393 private static final long serialVersionUID = 4497834738069338734L; 394 395 private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Window"); 396 397 private static final boolean locationByPlatformProp; 398 399 transient boolean isTrayIconWindow = false; 400 401 /** 402 * These fields are initialized in the native peer code 403 * or via AWTAccessor's WindowAccessor. 404 */ 405 private transient volatile int securityWarningWidth = 0; 406 private transient volatile int securityWarningHeight = 0; 407 408 static { 409 /* ensure that the necessary native libraries are loaded */ Toolkit.loadLibraries()410 Toolkit.loadLibraries(); 411 if (!GraphicsEnvironment.isHeadless()) { initIDs()412 initIDs(); 413 } 414 415 String s = java.security.AccessController.doPrivileged( 416 new GetPropertyAction("java.awt.syncLWRequests")); 417 systemSyncLWRequests = (s != null && s.equals("true")); 418 s = java.security.AccessController.doPrivileged( 419 new GetPropertyAction("java.awt.Window.locationByPlatform")); 420 locationByPlatformProp = (s != null && s.equals("true")); 421 } 422 423 /** 424 * Initialize JNI field and method IDs for fields that may be 425 accessed from C. 426 */ initIDs()427 private static native void initIDs(); 428 429 /** 430 * Constructs a new, initially invisible window in default size with the 431 * specified {@code GraphicsConfiguration}. 432 * <p> 433 * If there is a security manager, then it is invoked to check 434 * {@code AWTPermission("showWindowWithoutWarningBanner")} 435 * to determine whether or not the window must be displayed with 436 * a warning banner. 437 * 438 * @param gc the {@code GraphicsConfiguration} of the target screen 439 * device. If {@code gc} is {@code null}, the system default 440 * {@code GraphicsConfiguration} is assumed 441 * @exception IllegalArgumentException if {@code gc} 442 * is not from a screen device 443 * @exception HeadlessException when 444 * {@code GraphicsEnvironment.isHeadless()} returns {@code true} 445 * 446 * @see java.awt.GraphicsEnvironment#isHeadless 447 */ Window(GraphicsConfiguration gc)448 Window(GraphicsConfiguration gc) { 449 init(gc); 450 } 451 452 transient Object anchor = new Object(); 453 static class WindowDisposerRecord implements sun.java2d.DisposerRecord { 454 WeakReference<Window> owner; 455 final WeakReference<Window> weakThis; 456 final WeakReference<AppContext> context; 457 WindowDisposerRecord(AppContext context, Window victim)458 WindowDisposerRecord(AppContext context, Window victim) { 459 weakThis = victim.weakThis; 460 this.context = new WeakReference<AppContext>(context); 461 } 462 updateOwner()463 public void updateOwner() { 464 Window victim = weakThis.get(); 465 owner = (victim == null) 466 ? null 467 : new WeakReference<Window>(victim.getOwner()); 468 } 469 dispose()470 public void dispose() { 471 if (owner != null) { 472 Window parent = owner.get(); 473 if (parent != null) { 474 parent.removeOwnedWindow(weakThis); 475 } 476 } 477 AppContext ac = context.get(); 478 if (null != ac) { 479 Window.removeFromWindowList(ac, weakThis); 480 } 481 } 482 } 483 initGC(GraphicsConfiguration gc)484 private GraphicsConfiguration initGC(GraphicsConfiguration gc) { 485 GraphicsEnvironment.checkHeadless(); 486 487 if (gc == null) { 488 gc = GraphicsEnvironment.getLocalGraphicsEnvironment(). 489 getDefaultScreenDevice().getDefaultConfiguration(); 490 } 491 setGraphicsConfiguration(gc); 492 493 return gc; 494 } 495 init(GraphicsConfiguration gc)496 private void init(GraphicsConfiguration gc) { 497 GraphicsEnvironment.checkHeadless(); 498 499 syncLWRequests = systemSyncLWRequests; 500 501 weakThis = new WeakReference<Window>(this); 502 addToWindowList(); 503 504 setWarningString(); 505 this.cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR); 506 this.visible = false; 507 508 gc = initGC(gc); 509 510 if (gc.getDevice().getType() != 511 GraphicsDevice.TYPE_RASTER_SCREEN) { 512 throw new IllegalArgumentException("not a screen device"); 513 } 514 setLayout(new BorderLayout()); 515 516 /* offset the initial location with the original of the screen */ 517 /* and any insets */ 518 Rectangle screenBounds = gc.getBounds(); 519 Insets screenInsets = getToolkit().getScreenInsets(gc); 520 int x = getX() + screenBounds.x + screenInsets.left; 521 int y = getY() + screenBounds.y + screenInsets.top; 522 if (x != this.x || y != this.y) { 523 setLocation(x, y); 524 /* reset after setLocation */ 525 setLocationByPlatform(locationByPlatformProp); 526 } 527 528 modalExclusionType = Dialog.ModalExclusionType.NO_EXCLUDE; 529 disposerRecord = new WindowDisposerRecord(appContext, this); 530 sun.java2d.Disposer.addRecord(anchor, disposerRecord); 531 532 SunToolkit.checkAndSetPolicy(this); 533 } 534 535 /** 536 * Constructs a new, initially invisible window in the default size. 537 * <p> 538 * If there is a security manager set, it is invoked to check 539 * {@code AWTPermission("showWindowWithoutWarningBanner")}. 540 * If that check fails with a {@code SecurityException} then a warning 541 * banner is created. 542 * 543 * @exception HeadlessException when 544 * {@code GraphicsEnvironment.isHeadless()} returns {@code true} 545 * 546 * @see java.awt.GraphicsEnvironment#isHeadless 547 */ Window()548 Window() throws HeadlessException { 549 GraphicsEnvironment.checkHeadless(); 550 init((GraphicsConfiguration)null); 551 } 552 553 /** 554 * Constructs a new, initially invisible window with the specified 555 * {@code Frame} as its owner. The window will not be focusable 556 * unless its owner is showing on the screen. 557 * <p> 558 * If there is a security manager set, it is invoked to check 559 * {@code AWTPermission("showWindowWithoutWarningBanner")}. 560 * If that check fails with a {@code SecurityException} then a warning 561 * banner is created. 562 * 563 * @param owner the {@code Frame} to act as owner or {@code null} 564 * if this window has no owner 565 * @exception IllegalArgumentException if the {@code owner}'s 566 * {@code GraphicsConfiguration} is not from a screen device 567 * @exception HeadlessException when 568 * {@code GraphicsEnvironment.isHeadless} returns {@code true} 569 * 570 * @see java.awt.GraphicsEnvironment#isHeadless 571 * @see #isShowing 572 */ Window(Frame owner)573 public Window(Frame owner) { 574 this(owner == null ? (GraphicsConfiguration)null : 575 owner.getGraphicsConfiguration()); 576 ownedInit(owner); 577 } 578 579 /** 580 * Constructs a new, initially invisible window with the specified 581 * {@code Window} as its owner. This window will not be focusable 582 * unless its nearest owning {@code Frame} or {@code Dialog} 583 * is showing on the screen. 584 * <p> 585 * If there is a security manager set, it is invoked to check 586 * {@code AWTPermission("showWindowWithoutWarningBanner")}. 587 * If that check fails with a {@code SecurityException} then a 588 * warning banner is created. 589 * 590 * @param owner the {@code Window} to act as owner or 591 * {@code null} if this window has no owner 592 * @exception IllegalArgumentException if the {@code owner}'s 593 * {@code GraphicsConfiguration} is not from a screen device 594 * @exception HeadlessException when 595 * {@code GraphicsEnvironment.isHeadless()} returns 596 * {@code true} 597 * 598 * @see java.awt.GraphicsEnvironment#isHeadless 599 * @see #isShowing 600 * 601 * @since 1.2 602 */ Window(Window owner)603 public Window(Window owner) { 604 this(owner == null ? (GraphicsConfiguration)null : 605 owner.getGraphicsConfiguration()); 606 ownedInit(owner); 607 } 608 609 /** 610 * Constructs a new, initially invisible window with the specified owner 611 * {@code Window} and a {@code GraphicsConfiguration} 612 * of a screen device. The Window will not be focusable unless 613 * its nearest owning {@code Frame} or {@code Dialog} 614 * is showing on the screen. 615 * <p> 616 * If there is a security manager set, it is invoked to check 617 * {@code AWTPermission("showWindowWithoutWarningBanner")}. If that 618 * check fails with a {@code SecurityException} then a warning banner 619 * is created. 620 * 621 * @param owner the window to act as owner or {@code null} 622 * if this window has no owner 623 * @param gc the {@code GraphicsConfiguration} of the target 624 * screen device; if {@code gc} is {@code null}, 625 * the system default {@code GraphicsConfiguration} is assumed 626 * @exception IllegalArgumentException if {@code gc} 627 * is not from a screen device 628 * @exception HeadlessException when 629 * {@code GraphicsEnvironment.isHeadless()} returns 630 * {@code true} 631 * 632 * @see java.awt.GraphicsEnvironment#isHeadless 633 * @see GraphicsConfiguration#getBounds 634 * @see #isShowing 635 * @since 1.3 636 */ Window(Window owner, GraphicsConfiguration gc)637 public Window(Window owner, GraphicsConfiguration gc) { 638 this(gc); 639 ownedInit(owner); 640 } 641 ownedInit(Window owner)642 private void ownedInit(Window owner) { 643 this.parent = owner; 644 if (owner != null) { 645 owner.addOwnedWindow(weakThis); 646 if (owner.isAlwaysOnTop()) { 647 try { 648 setAlwaysOnTop(true); 649 } catch (SecurityException ignore) { 650 } 651 } 652 } 653 654 // WindowDisposerRecord requires a proper value of parent field. 655 disposerRecord.updateOwner(); 656 } 657 658 /** 659 * Construct a name for this component. Called by getName() when the 660 * name is null. 661 */ constructComponentName()662 String constructComponentName() { 663 synchronized (Window.class) { 664 return base + nameCounter++; 665 } 666 } 667 668 /** 669 * Returns the sequence of images to be displayed as the icon for this window. 670 * <p> 671 * This method returns a copy of the internally stored list, so all operations 672 * on the returned object will not affect the window's behavior. 673 * 674 * @return the copy of icon images' list for this window, or 675 * empty list if this window doesn't have icon images. 676 * @see #setIconImages 677 * @see #setIconImage(Image) 678 * @since 1.6 679 */ getIconImages()680 public java.util.List<Image> getIconImages() { 681 java.util.List<Image> icons = this.icons; 682 if (icons == null || icons.size() == 0) { 683 return new ArrayList<Image>(); 684 } 685 return new ArrayList<Image>(icons); 686 } 687 688 /** 689 * Sets the sequence of images to be displayed as the icon 690 * for this window. Subsequent calls to {@code getIconImages} will 691 * always return a copy of the {@code icons} list. 692 * <p> 693 * Depending on the platform capabilities one or several images 694 * of different dimensions will be used as the window's icon. 695 * <p> 696 * The {@code icons} list can contain {@code MultiResolutionImage} images also. 697 * Suitable image depending on screen resolution is extracted from 698 * base {@code MultiResolutionImage} image and added to the icons list 699 * while base resolution image is removed from list. 700 * The {@code icons} list is scanned for the images of most 701 * appropriate dimensions from the beginning. If the list contains 702 * several images of the same size, the first will be used. 703 * <p> 704 * Ownerless windows with no icon specified use platform-default icon. 705 * The icon of an owned window may be inherited from the owner 706 * unless explicitly overridden. 707 * Setting the icon to {@code null} or empty list restores 708 * the default behavior. 709 * <p> 710 * Note : Native windowing systems may use different images of differing 711 * dimensions to represent a window, depending on the context (e.g. 712 * window decoration, window list, taskbar, etc.). They could also use 713 * just a single image for all contexts or no image at all. 714 * 715 * @param icons the list of icon images to be displayed. 716 * @see #getIconImages() 717 * @see #setIconImage(Image) 718 * @since 1.6 719 */ setIconImages(java.util.List<? extends Image> icons)720 public synchronized void setIconImages(java.util.List<? extends Image> icons) { 721 this.icons = (icons == null) ? new ArrayList<Image>() : 722 new ArrayList<Image>(icons); 723 WindowPeer peer = (WindowPeer)this.peer; 724 if (peer != null) { 725 peer.updateIconImages(); 726 } 727 // Always send a property change event 728 firePropertyChange("iconImage", null, null); 729 } 730 731 /** 732 * Sets the image to be displayed as the icon for this window. 733 * <p> 734 * This method can be used instead of {@link #setIconImages setIconImages()} 735 * to specify a single image as a window's icon. 736 * <p> 737 * The following statement: 738 * <pre> 739 * setIconImage(image); 740 * </pre> 741 * is equivalent to: 742 * <pre> 743 * ArrayList<Image> imageList = new ArrayList<Image>(); 744 * imageList.add(image); 745 * setIconImages(imageList); 746 * </pre> 747 * <p> 748 * Note : Native windowing systems may use different images of differing 749 * dimensions to represent a window, depending on the context (e.g. 750 * window decoration, window list, taskbar, etc.). They could also use 751 * just a single image for all contexts or no image at all. 752 * 753 * @param image the icon image to be displayed. 754 * @see #setIconImages 755 * @see #getIconImages() 756 * @since 1.6 757 */ setIconImage(Image image)758 public void setIconImage(Image image) { 759 ArrayList<Image> imageList = new ArrayList<Image>(); 760 if (image != null) { 761 imageList.add(image); 762 } 763 setIconImages(imageList); 764 } 765 766 /** 767 * Makes this Window displayable by creating the connection to its 768 * native screen resource. 769 * This method is called internally by the toolkit and should 770 * not be called directly by programs. 771 * @see Component#isDisplayable 772 * @see Container#removeNotify 773 * @since 1.0 774 */ addNotify()775 public void addNotify() { 776 synchronized (getTreeLock()) { 777 Container parent = this.parent; 778 if (parent != null && parent.peer == null) { 779 parent.addNotify(); 780 } 781 if (peer == null) { 782 peer = getComponentFactory().createWindow(this); 783 } 784 synchronized (allWindows) { 785 allWindows.add(this); 786 } 787 super.addNotify(); 788 } 789 } 790 791 /** 792 * {@inheritDoc} 793 */ removeNotify()794 public void removeNotify() { 795 synchronized (getTreeLock()) { 796 synchronized (allWindows) { 797 allWindows.remove(this); 798 } 799 super.removeNotify(); 800 } 801 } 802 803 /** 804 * Causes this Window to be sized to fit the preferred size 805 * and layouts of its subcomponents. The resulting width and 806 * height of the window are automatically enlarged if either 807 * of dimensions is less than the minimum size as specified 808 * by the previous call to the {@code setMinimumSize} method. 809 * <p> 810 * If the window and/or its owner are not displayable yet, 811 * both of them are made displayable before calculating 812 * the preferred size. The Window is validated after its 813 * size is being calculated. 814 * 815 * @see Component#isDisplayable 816 * @see #setMinimumSize 817 */ 818 @SuppressWarnings("deprecation") pack()819 public void pack() { 820 Container parent = this.parent; 821 if (parent != null && parent.peer == null) { 822 parent.addNotify(); 823 } 824 if (peer == null) { 825 addNotify(); 826 } 827 Dimension newSize = getPreferredSize(); 828 if (peer != null) { 829 setClientSize(newSize.width, newSize.height); 830 } 831 832 if(beforeFirstShow) { 833 isPacked = true; 834 } 835 836 validateUnconditionally(); 837 } 838 839 /** 840 * Sets the minimum size of this window to a constant 841 * value. Subsequent calls to {@code getMinimumSize} 842 * will always return this value. If current window's 843 * size is less than {@code minimumSize} the size of the 844 * window is automatically enlarged to honor the minimum size. 845 * <p> 846 * If the {@code setSize} or {@code setBounds} methods 847 * are called afterwards with a width or height less than 848 * that was specified by the {@code setMinimumSize} method 849 * the window is automatically enlarged to meet 850 * the {@code minimumSize} value. The {@code minimumSize} 851 * value also affects the behaviour of the {@code pack} method. 852 * <p> 853 * The default behavior is restored by setting the minimum size 854 * parameter to the {@code null} value. 855 * <p> 856 * Resizing operation may be restricted if the user tries 857 * to resize window below the {@code minimumSize} value. 858 * This behaviour is platform-dependent. 859 * 860 * @param minimumSize the new minimum size of this window 861 * @see Component#setMinimumSize 862 * @see #getMinimumSize 863 * @see #isMinimumSizeSet 864 * @see #setSize(Dimension) 865 * @see #pack 866 * @since 1.6 867 */ setMinimumSize(Dimension minimumSize)868 public void setMinimumSize(Dimension minimumSize) { 869 synchronized (getTreeLock()) { 870 super.setMinimumSize(minimumSize); 871 Dimension size = getSize(); 872 if (isMinimumSizeSet()) { 873 if (size.width < minimumSize.width || size.height < minimumSize.height) { 874 int nw = Math.max(width, minimumSize.width); 875 int nh = Math.max(height, minimumSize.height); 876 setSize(nw, nh); 877 } 878 } 879 if (peer != null) { 880 ((WindowPeer)peer).updateMinimumSize(); 881 } 882 } 883 } 884 885 /** 886 * {@inheritDoc} 887 * <p> 888 * The {@code d.width} and {@code d.height} values 889 * are automatically enlarged if either is less than 890 * the minimum size as specified by previous call to 891 * {@code setMinimumSize}. 892 * <p> 893 * The method changes the geometry-related data. Therefore, 894 * the native windowing system may ignore such requests, or it may modify 895 * the requested data, so that the {@code Window} object is placed and sized 896 * in a way that corresponds closely to the desktop settings. 897 * 898 * @see #getSize 899 * @see #setBounds 900 * @see #setMinimumSize 901 * @since 1.6 902 */ setSize(Dimension d)903 public void setSize(Dimension d) { 904 super.setSize(d); 905 } 906 907 /** 908 * {@inheritDoc} 909 * <p> 910 * The {@code width} and {@code height} values 911 * are automatically enlarged if either is less than 912 * the minimum size as specified by previous call to 913 * {@code setMinimumSize}. 914 * <p> 915 * The method changes the geometry-related data. Therefore, 916 * the native windowing system may ignore such requests, or it may modify 917 * the requested data, so that the {@code Window} object is placed and sized 918 * in a way that corresponds closely to the desktop settings. 919 * 920 * @see #getSize 921 * @see #setBounds 922 * @see #setMinimumSize 923 * @since 1.6 924 */ setSize(int width, int height)925 public void setSize(int width, int height) { 926 super.setSize(width, height); 927 } 928 929 /** 930 * {@inheritDoc} 931 * <p> 932 * The method changes the geometry-related data. Therefore, 933 * the native windowing system may ignore such requests, or it may modify 934 * the requested data, so that the {@code Window} object is placed and sized 935 * in a way that corresponds closely to the desktop settings. 936 */ 937 @Override setLocation(int x, int y)938 public void setLocation(int x, int y) { 939 super.setLocation(x, y); 940 } 941 942 /** 943 * {@inheritDoc} 944 * <p> 945 * The method changes the geometry-related data. Therefore, 946 * the native windowing system may ignore such requests, or it may modify 947 * the requested data, so that the {@code Window} object is placed and sized 948 * in a way that corresponds closely to the desktop settings. 949 */ 950 @Override setLocation(Point p)951 public void setLocation(Point p) { 952 super.setLocation(p); 953 } 954 955 /** 956 * @deprecated As of JDK version 1.1, 957 * replaced by {@code setBounds(int, int, int, int)}. 958 */ 959 @Deprecated reshape(int x, int y, int width, int height)960 public void reshape(int x, int y, int width, int height) { 961 if (isMinimumSizeSet()) { 962 Dimension minSize = getMinimumSize(); 963 if (width < minSize.width) { 964 width = minSize.width; 965 } 966 if (height < minSize.height) { 967 height = minSize.height; 968 } 969 } 970 super.reshape(x, y, width, height); 971 } 972 setClientSize(int w, int h)973 void setClientSize(int w, int h) { 974 synchronized (getTreeLock()) { 975 setBoundsOp(ComponentPeer.SET_CLIENT_SIZE); 976 setBounds(x, y, w, h); 977 } 978 } 979 980 private static final AtomicBoolean 981 beforeFirstWindowShown = new AtomicBoolean(true); 982 closeSplashScreen()983 final void closeSplashScreen() { 984 if (isTrayIconWindow) { 985 return; 986 } 987 if (beforeFirstWindowShown.getAndSet(false)) { 988 // We don't use SplashScreen.getSplashScreen() to avoid instantiating 989 // the object if it hasn't been requested by user code explicitly 990 SunToolkit.closeSplashScreen(); 991 SplashScreen.markClosed(); 992 } 993 } 994 995 /** 996 * Shows or hides this {@code Window} depending on the value of parameter 997 * {@code b}. 998 * <p> 999 * If the method shows the window then the window is also made 1000 * focused under the following conditions: 1001 * <ul> 1002 * <li> The {@code Window} meets the requirements outlined in the 1003 * {@link #isFocusableWindow} method. 1004 * <li> The {@code Window}'s {@code autoRequestFocus} property is of the {@code true} value. 1005 * <li> Native windowing system allows the {@code Window} to get focused. 1006 * </ul> 1007 * There is an exception for the second condition (the value of the 1008 * {@code autoRequestFocus} property). The property is not taken into account if the 1009 * window is a modal dialog, which blocks the currently focused window. 1010 * <p> 1011 * Developers must never assume that the window is the focused or active window 1012 * until it receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event. 1013 * @param b if {@code true}, makes the {@code Window} visible, 1014 * otherwise hides the {@code Window}. 1015 * If the {@code Window} and/or its owner 1016 * are not yet displayable, both are made displayable. The 1017 * {@code Window} will be validated prior to being made visible. 1018 * If the {@code Window} is already visible, this will bring the 1019 * {@code Window} to the front.<p> 1020 * If {@code false}, hides this {@code Window}, its subcomponents, and all 1021 * of its owned children. 1022 * The {@code Window} and its subcomponents can be made visible again 1023 * with a call to {@code #setVisible(true)}. 1024 * @see java.awt.Component#isDisplayable 1025 * @see java.awt.Component#setVisible 1026 * @see java.awt.Window#toFront 1027 * @see java.awt.Window#dispose 1028 * @see java.awt.Window#setAutoRequestFocus 1029 * @see java.awt.Window#isFocusableWindow 1030 */ setVisible(boolean b)1031 public void setVisible(boolean b) { 1032 super.setVisible(b); 1033 } 1034 1035 /** 1036 * Makes the Window visible. If the Window and/or its owner 1037 * are not yet displayable, both are made displayable. The 1038 * Window will be validated prior to being made visible. 1039 * If the Window is already visible, this will bring the Window 1040 * to the front. 1041 * @see Component#isDisplayable 1042 * @see #toFront 1043 * @deprecated As of JDK version 1.5, replaced by 1044 * {@link #setVisible(boolean)}. 1045 */ 1046 @Deprecated show()1047 public void show() { 1048 if (peer == null) { 1049 addNotify(); 1050 } 1051 validateUnconditionally(); 1052 1053 isInShow = true; 1054 if (visible) { 1055 toFront(); 1056 } else { 1057 beforeFirstShow = false; 1058 closeSplashScreen(); 1059 Dialog.checkShouldBeBlocked(this); 1060 super.show(); 1061 locationByPlatform = false; 1062 for (int i = 0; i < ownedWindowList.size(); i++) { 1063 Window child = ownedWindowList.elementAt(i).get(); 1064 if ((child != null) && child.showWithParent) { 1065 child.show(); 1066 child.showWithParent = false; 1067 } // endif 1068 } // endfor 1069 if (!isModalBlocked()) { 1070 updateChildrenBlocking(); 1071 } else { 1072 // fix for 6532736: after this window is shown, its blocker 1073 // should be raised to front 1074 modalBlocker.toFront_NoClientCode(); 1075 } 1076 if (this instanceof Frame || this instanceof Dialog) { 1077 updateChildFocusableWindowState(this); 1078 } 1079 } 1080 isInShow = false; 1081 1082 // If first time shown, generate WindowOpened event 1083 if ((state & OPENED) == 0) { 1084 postWindowEvent(WindowEvent.WINDOW_OPENED); 1085 state |= OPENED; 1086 } 1087 } 1088 updateChildFocusableWindowState(Window w)1089 static void updateChildFocusableWindowState(Window w) { 1090 if (w.peer != null && w.isShowing()) { 1091 ((WindowPeer)w.peer).updateFocusableWindowState(); 1092 } 1093 for (int i = 0; i < w.ownedWindowList.size(); i++) { 1094 Window child = w.ownedWindowList.elementAt(i).get(); 1095 if (child != null) { 1096 updateChildFocusableWindowState(child); 1097 } 1098 } 1099 } 1100 postWindowEvent(int id)1101 synchronized void postWindowEvent(int id) { 1102 if (windowListener != null 1103 || (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 1104 || Toolkit.enabledOnToolkit(AWTEvent.WINDOW_EVENT_MASK)) { 1105 WindowEvent e = new WindowEvent(this, id); 1106 Toolkit.getEventQueue().postEvent(e); 1107 } 1108 } 1109 1110 /** 1111 * Hide this Window, its subcomponents, and all of its owned children. 1112 * The Window and its subcomponents can be made visible again 1113 * with a call to {@code show}. 1114 * @see #show 1115 * @see #dispose 1116 * @deprecated As of JDK version 1.5, replaced by 1117 * {@link #setVisible(boolean)}. 1118 */ 1119 @Deprecated hide()1120 public void hide() { 1121 synchronized(ownedWindowList) { 1122 for (int i = 0; i < ownedWindowList.size(); i++) { 1123 Window child = ownedWindowList.elementAt(i).get(); 1124 if ((child != null) && child.visible) { 1125 child.hide(); 1126 child.showWithParent = true; 1127 } 1128 } 1129 } 1130 if (isModalBlocked()) { 1131 modalBlocker.unblockWindow(this); 1132 } 1133 super.hide(); 1134 locationByPlatform = false; 1135 } 1136 clearMostRecentFocusOwnerOnHide()1137 final void clearMostRecentFocusOwnerOnHide() { 1138 /* do nothing */ 1139 } 1140 1141 /** 1142 * Releases all of the native screen resources used by this 1143 * {@code Window}, its subcomponents, and all of its owned 1144 * children. That is, the resources for these {@code Component}s 1145 * will be destroyed, any memory they consume will be returned to the 1146 * OS, and they will be marked as undisplayable. 1147 * <p> 1148 * The {@code Window} and its subcomponents can be made displayable 1149 * again by rebuilding the native resources with a subsequent call to 1150 * {@code pack} or {@code show}. The states of the recreated 1151 * {@code Window} and its subcomponents will be identical to the 1152 * states of these objects at the point where the {@code Window} 1153 * was disposed (not accounting for additional modifications between 1154 * those actions). 1155 * <p> 1156 * <b>Note</b>: When the last displayable window 1157 * within the Java virtual machine (VM) is disposed of, the VM may 1158 * terminate. See <a href="doc-files/AWTThreadIssues.html#Autoshutdown"> 1159 * AWT Threading Issues</a> for more information. 1160 * @see Component#isDisplayable 1161 * @see #pack 1162 * @see #show 1163 */ dispose()1164 public void dispose() { 1165 doDispose(); 1166 } 1167 1168 /* 1169 * Fix for 4872170. 1170 * If dispose() is called on parent then its children have to be disposed as well 1171 * as reported in javadoc. So we need to implement this functionality even if a 1172 * child overrides dispose() in a wrong way without calling super.dispose(). 1173 */ disposeImpl()1174 void disposeImpl() { 1175 dispose(); 1176 if (peer != null) { 1177 doDispose(); 1178 } 1179 } 1180 doDispose()1181 void doDispose() { 1182 class DisposeAction implements Runnable { 1183 public void run() { 1184 disposing = true; 1185 try { 1186 // Check if this window is the fullscreen window for the 1187 // device. Exit the fullscreen mode prior to disposing 1188 // of the window if that's the case. 1189 GraphicsDevice gd = getGraphicsConfiguration().getDevice(); 1190 if (gd.getFullScreenWindow() == Window.this) { 1191 gd.setFullScreenWindow(null); 1192 } 1193 1194 Object[] ownedWindowArray; 1195 synchronized(ownedWindowList) { 1196 ownedWindowArray = new Object[ownedWindowList.size()]; 1197 ownedWindowList.copyInto(ownedWindowArray); 1198 } 1199 for (int i = 0; i < ownedWindowArray.length; i++) { 1200 Window child = (Window) (((WeakReference) 1201 (ownedWindowArray[i])).get()); 1202 if (child != null) { 1203 child.disposeImpl(); 1204 } 1205 } 1206 hide(); 1207 beforeFirstShow = true; 1208 removeNotify(); 1209 synchronized (inputContextLock) { 1210 if (inputContext != null) { 1211 inputContext.dispose(); 1212 inputContext = null; 1213 } 1214 } 1215 clearCurrentFocusCycleRootOnHide(); 1216 } finally { 1217 disposing = false; 1218 } 1219 } 1220 } 1221 boolean fireWindowClosedEvent = isDisplayable(); 1222 DisposeAction action = new DisposeAction(); 1223 if (EventQueue.isDispatchThread()) { 1224 action.run(); 1225 } 1226 else { 1227 try { 1228 EventQueue.invokeAndWait(this, action); 1229 } 1230 catch (InterruptedException e) { 1231 System.err.println("Disposal was interrupted:"); 1232 e.printStackTrace(); 1233 } 1234 catch (InvocationTargetException e) { 1235 System.err.println("Exception during disposal:"); 1236 e.printStackTrace(); 1237 } 1238 } 1239 // Execute outside the Runnable because postWindowEvent is 1240 // synchronized on (this). We don't need to synchronize the call 1241 // on the EventQueue anyways. 1242 if (fireWindowClosedEvent) { 1243 postWindowEvent(WindowEvent.WINDOW_CLOSED); 1244 } 1245 } 1246 1247 /* 1248 * Should only be called while holding the tree lock. 1249 * It's overridden here because parent == owner in Window, 1250 * and we shouldn't adjust counter on owner 1251 */ adjustListeningChildrenOnParent(long mask, int num)1252 void adjustListeningChildrenOnParent(long mask, int num) { 1253 } 1254 1255 // Should only be called while holding tree lock adjustDescendantsOnParent(int num)1256 void adjustDescendantsOnParent(int num) { 1257 // do nothing since parent == owner and we shouldn't 1258 // adjust counter on owner 1259 } 1260 1261 /** 1262 * If this Window is visible, brings this Window to the front and may make 1263 * it the focused Window. 1264 * <p> 1265 * Places this Window at the top of the stacking order and shows it in 1266 * front of any other Windows in this VM. No action will take place if this 1267 * Window is not visible. Some platforms do not allow Windows which own 1268 * other Windows to appear on top of those owned Windows. Some platforms 1269 * may not permit this VM to place its Windows above windows of native 1270 * applications, or Windows of other VMs. This permission may depend on 1271 * whether a Window in this VM is already focused. Every attempt will be 1272 * made to move this Window as high as possible in the stacking order; 1273 * however, developers should not assume that this method will move this 1274 * Window above all other windows in every situation. 1275 * <p> 1276 * Developers must never assume that this Window is the focused or active 1277 * Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED 1278 * event. On platforms where the top-most window is the focused window, this 1279 * method will <b>probably</b> focus this Window (if it is not already focused) 1280 * under the following conditions: 1281 * <ul> 1282 * <li> The window meets the requirements outlined in the 1283 * {@link #isFocusableWindow} method. 1284 * <li> The window's property {@code autoRequestFocus} is of the 1285 * {@code true} value. 1286 * <li> Native windowing system allows the window to get focused. 1287 * </ul> 1288 * On platforms where the stacking order does not typically affect the focused 1289 * window, this method will <b>probably</b> leave the focused and active 1290 * Windows unchanged. 1291 * <p> 1292 * If this method causes this Window to be focused, and this Window is a 1293 * Frame or a Dialog, it will also become activated. If this Window is 1294 * focused, but it is not a Frame or a Dialog, then the first Frame or 1295 * Dialog that is an owner of this Window will be activated. 1296 * <p> 1297 * If this window is blocked by modal dialog, then the blocking dialog 1298 * is brought to the front and remains above the blocked window. 1299 * 1300 * @see #toBack 1301 * @see #setAutoRequestFocus 1302 * @see #isFocusableWindow 1303 */ toFront()1304 public void toFront() { 1305 toFront_NoClientCode(); 1306 } 1307 1308 // This functionality is implemented in a final package-private method 1309 // to insure that it cannot be overridden by client subclasses. toFront_NoClientCode()1310 final void toFront_NoClientCode() { 1311 if (visible) { 1312 WindowPeer peer = (WindowPeer)this.peer; 1313 if (peer != null) { 1314 peer.toFront(); 1315 } 1316 if (isModalBlocked()) { 1317 modalBlocker.toFront_NoClientCode(); 1318 } 1319 } 1320 } 1321 1322 /** 1323 * If this Window is visible, sends this Window to the back and may cause 1324 * it to lose focus or activation if it is the focused or active Window. 1325 * <p> 1326 * Places this Window at the bottom of the stacking order and shows it 1327 * behind any other Windows in this VM. No action will take place is this 1328 * Window is not visible. Some platforms do not allow Windows which are 1329 * owned by other Windows to appear below their owners. Every attempt will 1330 * be made to move this Window as low as possible in the stacking order; 1331 * however, developers should not assume that this method will move this 1332 * Window below all other windows in every situation. 1333 * <p> 1334 * Because of variations in native windowing systems, no guarantees about 1335 * changes to the focused and active Windows can be made. Developers must 1336 * never assume that this Window is no longer the focused or active Window 1337 * until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED 1338 * event. On platforms where the top-most window is the focused window, 1339 * this method will <b>probably</b> cause this Window to lose focus. In 1340 * that case, the next highest, focusable Window in this VM will receive 1341 * focus. On platforms where the stacking order does not typically affect 1342 * the focused window, this method will <b>probably</b> leave the focused 1343 * and active Windows unchanged. 1344 * 1345 * @see #toFront 1346 */ toBack()1347 public void toBack() { 1348 toBack_NoClientCode(); 1349 } 1350 1351 // This functionality is implemented in a final package-private method 1352 // to insure that it cannot be overridden by client subclasses. toBack_NoClientCode()1353 final void toBack_NoClientCode() { 1354 if(isAlwaysOnTop()) { 1355 try { 1356 setAlwaysOnTop(false); 1357 }catch(SecurityException e) { 1358 } 1359 } 1360 if (visible) { 1361 WindowPeer peer = (WindowPeer)this.peer; 1362 if (peer != null) { 1363 peer.toBack(); 1364 } 1365 } 1366 } 1367 1368 /** 1369 * Returns the toolkit of this frame. 1370 * @return the toolkit of this window. 1371 * @see Toolkit 1372 * @see Toolkit#getDefaultToolkit 1373 * @see Component#getToolkit 1374 */ getToolkit()1375 public Toolkit getToolkit() { 1376 return Toolkit.getDefaultToolkit(); 1377 } 1378 1379 /** 1380 * Gets the warning string that is displayed with this window. 1381 * If this window is insecure, the warning string is displayed 1382 * somewhere in the visible area of the window. A window is 1383 * insecure if there is a security manager and the security 1384 * manager denies 1385 * {@code AWTPermission("showWindowWithoutWarningBanner")}. 1386 * <p> 1387 * If the window is secure, then {@code getWarningString} 1388 * returns {@code null}. If the window is insecure, this 1389 * method checks for the system property 1390 * {@code awt.appletWarning} 1391 * and returns the string value of that property. 1392 * @return the warning string for this window. 1393 */ getWarningString()1394 public final String getWarningString() { 1395 return warningString; 1396 } 1397 setWarningString()1398 private void setWarningString() { 1399 warningString = null; 1400 SecurityManager sm = System.getSecurityManager(); 1401 if (sm != null) { 1402 try { 1403 sm.checkPermission(AWTPermissions.TOPLEVEL_WINDOW_PERMISSION); 1404 } catch (SecurityException se) { 1405 // make sure the privileged action is only 1406 // for getting the property! We don't want the 1407 // above checkPermission call to always succeed! 1408 warningString = AccessController.doPrivileged( 1409 new GetPropertyAction("awt.appletWarning", 1410 "Java Applet Window")); 1411 } 1412 } 1413 } 1414 1415 /** 1416 * Gets the {@code Locale} object that is associated 1417 * with this window, if the locale has been set. 1418 * If no locale has been set, then the default locale 1419 * is returned. 1420 * @return the locale that is set for this window. 1421 * @see java.util.Locale 1422 * @since 1.1 1423 */ getLocale()1424 public Locale getLocale() { 1425 if (this.locale == null) { 1426 return Locale.getDefault(); 1427 } 1428 return this.locale; 1429 } 1430 1431 /** 1432 * Gets the input context for this window. A window always has an input context, 1433 * which is shared by subcomponents unless they create and set their own. 1434 * @see Component#getInputContext 1435 * @since 1.2 1436 */ getInputContext()1437 public InputContext getInputContext() { 1438 synchronized (inputContextLock) { 1439 if (inputContext == null) { 1440 inputContext = InputContext.getInstance(); 1441 } 1442 } 1443 return inputContext; 1444 } 1445 1446 /** 1447 * Set the cursor image to a specified cursor. 1448 * <p> 1449 * The method may have no visual effect if the Java platform 1450 * implementation and/or the native system do not support 1451 * changing the mouse cursor shape. 1452 * @param cursor One of the constants defined 1453 * by the {@code Cursor} class. If this parameter is null 1454 * then the cursor for this window will be set to the type 1455 * Cursor.DEFAULT_CURSOR. 1456 * @see Component#getCursor 1457 * @see Cursor 1458 * @since 1.1 1459 */ setCursor(Cursor cursor)1460 public void setCursor(Cursor cursor) { 1461 if (cursor == null) { 1462 cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR); 1463 } 1464 super.setCursor(cursor); 1465 } 1466 1467 /** 1468 * Returns the owner of this window. 1469 * 1470 * @return the owner of this window 1471 * @since 1.2 1472 */ getOwner()1473 public Window getOwner() { 1474 return getOwner_NoClientCode(); 1475 } getOwner_NoClientCode()1476 final Window getOwner_NoClientCode() { 1477 return (Window)parent; 1478 } 1479 1480 /** 1481 * Return an array containing all the windows this 1482 * window currently owns. 1483 * 1484 * @return the array of all the owned windows 1485 * @since 1.2 1486 */ getOwnedWindows()1487 public Window[] getOwnedWindows() { 1488 return getOwnedWindows_NoClientCode(); 1489 } getOwnedWindows_NoClientCode()1490 final Window[] getOwnedWindows_NoClientCode() { 1491 Window[] realCopy; 1492 1493 synchronized(ownedWindowList) { 1494 // Recall that ownedWindowList is actually a Vector of 1495 // WeakReferences and calling get() on one of these references 1496 // may return null. Make two arrays-- one the size of the 1497 // Vector (fullCopy with size fullSize), and one the size of 1498 // all non-null get()s (realCopy with size realSize). 1499 int fullSize = ownedWindowList.size(); 1500 int realSize = 0; 1501 Window[] fullCopy = new Window[fullSize]; 1502 1503 for (int i = 0; i < fullSize; i++) { 1504 fullCopy[realSize] = ownedWindowList.elementAt(i).get(); 1505 1506 if (fullCopy[realSize] != null) { 1507 realSize++; 1508 } 1509 } 1510 1511 if (fullSize != realSize) { 1512 realCopy = Arrays.copyOf(fullCopy, realSize); 1513 } else { 1514 realCopy = fullCopy; 1515 } 1516 } 1517 1518 return realCopy; 1519 } 1520 isModalBlocked()1521 boolean isModalBlocked() { 1522 return modalBlocker != null; 1523 } 1524 setModalBlocked(Dialog blocker, boolean blocked, boolean peerCall)1525 void setModalBlocked(Dialog blocker, boolean blocked, boolean peerCall) { 1526 this.modalBlocker = blocked ? blocker : null; 1527 if (peerCall) { 1528 WindowPeer peer = (WindowPeer)this.peer; 1529 if (peer != null) { 1530 peer.setModalBlocked(blocker, blocked); 1531 } 1532 } 1533 } 1534 getModalBlocker()1535 Dialog getModalBlocker() { 1536 return modalBlocker; 1537 } 1538 1539 /* 1540 * Returns a list of all displayable Windows, i. e. all the 1541 * Windows which peer is not null. 1542 * 1543 * @see #addNotify 1544 * @see #removeNotify 1545 */ getAllWindows()1546 static IdentityArrayList<Window> getAllWindows() { 1547 synchronized (allWindows) { 1548 IdentityArrayList<Window> v = new IdentityArrayList<Window>(); 1549 v.addAll(allWindows); 1550 return v; 1551 } 1552 } 1553 getAllUnblockedWindows()1554 static IdentityArrayList<Window> getAllUnblockedWindows() { 1555 synchronized (allWindows) { 1556 IdentityArrayList<Window> unblocked = new IdentityArrayList<Window>(); 1557 for (int i = 0; i < allWindows.size(); i++) { 1558 Window w = allWindows.get(i); 1559 if (!w.isModalBlocked()) { 1560 unblocked.add(w); 1561 } 1562 } 1563 return unblocked; 1564 } 1565 } 1566 getWindows(AppContext appContext)1567 private static Window[] getWindows(AppContext appContext) { 1568 synchronized (Window.class) { 1569 Window[] realCopy; 1570 @SuppressWarnings("unchecked") 1571 Vector<WeakReference<Window>> windowList = 1572 (Vector<WeakReference<Window>>)appContext.get(Window.class); 1573 if (windowList != null) { 1574 int fullSize = windowList.size(); 1575 int realSize = 0; 1576 Window[] fullCopy = new Window[fullSize]; 1577 for (int i = 0; i < fullSize; i++) { 1578 Window w = windowList.get(i).get(); 1579 if (w != null) { 1580 fullCopy[realSize++] = w; 1581 } 1582 } 1583 if (fullSize != realSize) { 1584 realCopy = Arrays.copyOf(fullCopy, realSize); 1585 } else { 1586 realCopy = fullCopy; 1587 } 1588 } else { 1589 realCopy = new Window[0]; 1590 } 1591 return realCopy; 1592 } 1593 } 1594 1595 /** 1596 * Returns an array of all {@code Window}s, both owned and ownerless, 1597 * created by this application. 1598 * If called from an applet, the array includes only the {@code Window}s 1599 * accessible by that applet. 1600 * <p> 1601 * <b>Warning:</b> this method may return system created windows, such 1602 * as a print dialog. Applications should not assume the existence of 1603 * these dialogs, nor should an application assume anything about these 1604 * dialogs such as component positions, {@code LayoutManager}s 1605 * or serialization. 1606 * 1607 * @return the array of all the {@code Window}s created by the application 1608 * @see Frame#getFrames 1609 * @see Window#getOwnerlessWindows 1610 * 1611 * @since 1.6 1612 */ getWindows()1613 public static Window[] getWindows() { 1614 return getWindows(AppContext.getAppContext()); 1615 } 1616 1617 /** 1618 * Returns an array of all {@code Window}s created by this application 1619 * that have no owner. They include {@code Frame}s and ownerless 1620 * {@code Dialog}s and {@code Window}s. 1621 * If called from an applet, the array includes only the {@code Window}s 1622 * accessible by that applet. 1623 * <p> 1624 * <b>Warning:</b> this method may return system created windows, such 1625 * as a print dialog. Applications should not assume the existence of 1626 * these dialogs, nor should an application assume anything about these 1627 * dialogs such as component positions, {@code LayoutManager}s 1628 * or serialization. 1629 * 1630 * @return the array of all the ownerless {@code Window}s 1631 * created by this application 1632 * @see Frame#getFrames 1633 * @see Window#getWindows() 1634 * 1635 * @since 1.6 1636 */ getOwnerlessWindows()1637 public static Window[] getOwnerlessWindows() { 1638 Window[] allWindows = Window.getWindows(); 1639 1640 int ownerlessCount = 0; 1641 for (Window w : allWindows) { 1642 if (w.getOwner() == null) { 1643 ownerlessCount++; 1644 } 1645 } 1646 1647 Window[] ownerless = new Window[ownerlessCount]; 1648 int c = 0; 1649 for (Window w : allWindows) { 1650 if (w.getOwner() == null) { 1651 ownerless[c++] = w; 1652 } 1653 } 1654 1655 return ownerless; 1656 } 1657 getDocumentRoot()1658 Window getDocumentRoot() { 1659 synchronized (getTreeLock()) { 1660 Window w = this; 1661 while (w.getOwner() != null) { 1662 w = w.getOwner(); 1663 } 1664 return w; 1665 } 1666 } 1667 1668 /** 1669 * Specifies the modal exclusion type for this window. If a window is modal 1670 * excluded, it is not blocked by some modal dialogs. See {@link 1671 * java.awt.Dialog.ModalExclusionType Dialog.ModalExclusionType} for 1672 * possible modal exclusion types. 1673 * <p> 1674 * If the given type is not supported, {@code NO_EXCLUDE} is used. 1675 * <p> 1676 * Note: changing the modal exclusion type for a visible window may have no 1677 * effect until it is hidden and then shown again. 1678 * 1679 * @param exclusionType the modal exclusion type for this window; a {@code null} 1680 * value is equivalent to {@link Dialog.ModalExclusionType#NO_EXCLUDE 1681 * NO_EXCLUDE} 1682 * @throws SecurityException if the calling thread does not have permission 1683 * to set the modal exclusion property to the window with the given 1684 * {@code exclusionType} 1685 * @see java.awt.Dialog.ModalExclusionType 1686 * @see java.awt.Window#getModalExclusionType 1687 * @see java.awt.Toolkit#isModalExclusionTypeSupported 1688 * 1689 * @since 1.6 1690 */ setModalExclusionType(Dialog.ModalExclusionType exclusionType)1691 public void setModalExclusionType(Dialog.ModalExclusionType exclusionType) { 1692 if (exclusionType == null) { 1693 exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE; 1694 } 1695 if (!Toolkit.getDefaultToolkit().isModalExclusionTypeSupported(exclusionType)) { 1696 exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE; 1697 } 1698 if (modalExclusionType == exclusionType) { 1699 return; 1700 } 1701 if (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE) { 1702 SecurityManager sm = System.getSecurityManager(); 1703 if (sm != null) { 1704 sm.checkPermission(AWTPermissions.TOOLKIT_MODALITY_PERMISSION); 1705 } 1706 } 1707 modalExclusionType = exclusionType; 1708 1709 // if we want on-fly changes, we need to uncomment the lines below 1710 // and override the method in Dialog to use modalShow() instead 1711 // of updateChildrenBlocking() 1712 /* 1713 if (isModalBlocked()) { 1714 modalBlocker.unblockWindow(this); 1715 } 1716 Dialog.checkShouldBeBlocked(this); 1717 updateChildrenBlocking(); 1718 */ 1719 } 1720 1721 /** 1722 * Returns the modal exclusion type of this window. 1723 * 1724 * @return the modal exclusion type of this window 1725 * 1726 * @see java.awt.Dialog.ModalExclusionType 1727 * @see java.awt.Window#setModalExclusionType 1728 * 1729 * @since 1.6 1730 */ getModalExclusionType()1731 public Dialog.ModalExclusionType getModalExclusionType() { 1732 return modalExclusionType; 1733 } 1734 isModalExcluded(Dialog.ModalExclusionType exclusionType)1735 boolean isModalExcluded(Dialog.ModalExclusionType exclusionType) { 1736 if ((modalExclusionType != null) && 1737 modalExclusionType.compareTo(exclusionType) >= 0) 1738 { 1739 return true; 1740 } 1741 Window owner = getOwner_NoClientCode(); 1742 return (owner != null) && owner.isModalExcluded(exclusionType); 1743 } 1744 updateChildrenBlocking()1745 void updateChildrenBlocking() { 1746 Vector<Window> childHierarchy = new Vector<Window>(); 1747 Window[] ownedWindows = getOwnedWindows(); 1748 for (int i = 0; i < ownedWindows.length; i++) { 1749 childHierarchy.add(ownedWindows[i]); 1750 } 1751 int k = 0; 1752 while (k < childHierarchy.size()) { 1753 Window w = childHierarchy.get(k); 1754 if (w.isVisible()) { 1755 if (w.isModalBlocked()) { 1756 Dialog blocker = w.getModalBlocker(); 1757 blocker.unblockWindow(w); 1758 } 1759 Dialog.checkShouldBeBlocked(w); 1760 Window[] wOwned = w.getOwnedWindows(); 1761 for (int j = 0; j < wOwned.length; j++) { 1762 childHierarchy.add(wOwned[j]); 1763 } 1764 } 1765 k++; 1766 } 1767 } 1768 1769 /** 1770 * Adds the specified window listener to receive window events from 1771 * this window. 1772 * If l is null, no exception is thrown and no action is performed. 1773 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads" 1774 * >AWT Threading Issues</a> for details on AWT's threading model. 1775 * 1776 * @param l the window listener 1777 * @see #removeWindowListener 1778 * @see #getWindowListeners 1779 */ addWindowListener(WindowListener l)1780 public synchronized void addWindowListener(WindowListener l) { 1781 if (l == null) { 1782 return; 1783 } 1784 newEventsOnly = true; 1785 windowListener = AWTEventMulticaster.add(windowListener, l); 1786 } 1787 1788 /** 1789 * Adds the specified window state listener to receive window 1790 * events from this window. If {@code l} is {@code null}, 1791 * no exception is thrown and no action is performed. 1792 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads" 1793 * >AWT Threading Issues</a> for details on AWT's threading model. 1794 * 1795 * @param l the window state listener 1796 * @see #removeWindowStateListener 1797 * @see #getWindowStateListeners 1798 * @since 1.4 1799 */ addWindowStateListener(WindowStateListener l)1800 public synchronized void addWindowStateListener(WindowStateListener l) { 1801 if (l == null) { 1802 return; 1803 } 1804 windowStateListener = AWTEventMulticaster.add(windowStateListener, l); 1805 newEventsOnly = true; 1806 } 1807 1808 /** 1809 * Adds the specified window focus listener to receive window events 1810 * from this window. 1811 * If l is null, no exception is thrown and no action is performed. 1812 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads" 1813 * >AWT Threading Issues</a> for details on AWT's threading model. 1814 * 1815 * @param l the window focus listener 1816 * @see #removeWindowFocusListener 1817 * @see #getWindowFocusListeners 1818 * @since 1.4 1819 */ addWindowFocusListener(WindowFocusListener l)1820 public synchronized void addWindowFocusListener(WindowFocusListener l) { 1821 if (l == null) { 1822 return; 1823 } 1824 windowFocusListener = AWTEventMulticaster.add(windowFocusListener, l); 1825 newEventsOnly = true; 1826 } 1827 1828 /** 1829 * Removes the specified window listener so that it no longer 1830 * receives window events from this window. 1831 * If l is null, no exception is thrown and no action is performed. 1832 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads" 1833 * >AWT Threading Issues</a> for details on AWT's threading model. 1834 * 1835 * @param l the window listener 1836 * @see #addWindowListener 1837 * @see #getWindowListeners 1838 */ removeWindowListener(WindowListener l)1839 public synchronized void removeWindowListener(WindowListener l) { 1840 if (l == null) { 1841 return; 1842 } 1843 windowListener = AWTEventMulticaster.remove(windowListener, l); 1844 } 1845 1846 /** 1847 * Removes the specified window state listener so that it no 1848 * longer receives window events from this window. If 1849 * {@code l} is {@code null}, no exception is thrown and 1850 * no action is performed. 1851 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads" 1852 * >AWT Threading Issues</a> for details on AWT's threading model. 1853 * 1854 * @param l the window state listener 1855 * @see #addWindowStateListener 1856 * @see #getWindowStateListeners 1857 * @since 1.4 1858 */ removeWindowStateListener(WindowStateListener l)1859 public synchronized void removeWindowStateListener(WindowStateListener l) { 1860 if (l == null) { 1861 return; 1862 } 1863 windowStateListener = AWTEventMulticaster.remove(windowStateListener, l); 1864 } 1865 1866 /** 1867 * Removes the specified window focus listener so that it no longer 1868 * receives window events from this window. 1869 * If l is null, no exception is thrown and no action is performed. 1870 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads" 1871 * >AWT Threading Issues</a> for details on AWT's threading model. 1872 * 1873 * @param l the window focus listener 1874 * @see #addWindowFocusListener 1875 * @see #getWindowFocusListeners 1876 * @since 1.4 1877 */ removeWindowFocusListener(WindowFocusListener l)1878 public synchronized void removeWindowFocusListener(WindowFocusListener l) { 1879 if (l == null) { 1880 return; 1881 } 1882 windowFocusListener = AWTEventMulticaster.remove(windowFocusListener, l); 1883 } 1884 1885 /** 1886 * Returns an array of all the window listeners 1887 * registered on this window. 1888 * 1889 * @return all of this window's {@code WindowListener}s 1890 * or an empty array if no window 1891 * listeners are currently registered 1892 * 1893 * @see #addWindowListener 1894 * @see #removeWindowListener 1895 * @since 1.4 1896 */ getWindowListeners()1897 public synchronized WindowListener[] getWindowListeners() { 1898 return getListeners(WindowListener.class); 1899 } 1900 1901 /** 1902 * Returns an array of all the window focus listeners 1903 * registered on this window. 1904 * 1905 * @return all of this window's {@code WindowFocusListener}s 1906 * or an empty array if no window focus 1907 * listeners are currently registered 1908 * 1909 * @see #addWindowFocusListener 1910 * @see #removeWindowFocusListener 1911 * @since 1.4 1912 */ getWindowFocusListeners()1913 public synchronized WindowFocusListener[] getWindowFocusListeners() { 1914 return getListeners(WindowFocusListener.class); 1915 } 1916 1917 /** 1918 * Returns an array of all the window state listeners 1919 * registered on this window. 1920 * 1921 * @return all of this window's {@code WindowStateListener}s 1922 * or an empty array if no window state 1923 * listeners are currently registered 1924 * 1925 * @see #addWindowStateListener 1926 * @see #removeWindowStateListener 1927 * @since 1.4 1928 */ getWindowStateListeners()1929 public synchronized WindowStateListener[] getWindowStateListeners() { 1930 return getListeners(WindowStateListener.class); 1931 } 1932 1933 1934 /** 1935 * Returns an array of all the objects currently registered 1936 * as <code><em>Foo</em>Listener</code>s 1937 * upon this {@code Window}. 1938 * <code><em>Foo</em>Listener</code>s are registered using the 1939 * <code>add<em>Foo</em>Listener</code> method. 1940 * 1941 * <p> 1942 * 1943 * You can specify the {@code listenerType} argument 1944 * with a class literal, such as 1945 * <code><em>Foo</em>Listener.class</code>. 1946 * For example, you can query a 1947 * {@code Window w} 1948 * for its window listeners with the following code: 1949 * 1950 * <pre>WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));</pre> 1951 * 1952 * If no such listeners exist, this method returns an empty array. 1953 * 1954 * @param listenerType the type of listeners requested; this parameter 1955 * should specify an interface that descends from 1956 * {@code java.util.EventListener} 1957 * @return an array of all objects registered as 1958 * <code><em>Foo</em>Listener</code>s on this window, 1959 * or an empty array if no such 1960 * listeners have been added 1961 * @exception ClassCastException if {@code listenerType} 1962 * doesn't specify a class or interface that implements 1963 * {@code java.util.EventListener} 1964 * @exception NullPointerException if {@code listenerType} is {@code null} 1965 * 1966 * @see #getWindowListeners 1967 * @since 1.3 1968 */ getListeners(Class<T> listenerType)1969 public <T extends EventListener> T[] getListeners(Class<T> listenerType) { 1970 EventListener l = null; 1971 if (listenerType == WindowFocusListener.class) { 1972 l = windowFocusListener; 1973 } else if (listenerType == WindowStateListener.class) { 1974 l = windowStateListener; 1975 } else if (listenerType == WindowListener.class) { 1976 l = windowListener; 1977 } else { 1978 return super.getListeners(listenerType); 1979 } 1980 return AWTEventMulticaster.getListeners(l, listenerType); 1981 } 1982 1983 // REMIND: remove when filtering is handled at lower level eventEnabled(AWTEvent e)1984 boolean eventEnabled(AWTEvent e) { 1985 switch(e.id) { 1986 case WindowEvent.WINDOW_OPENED: 1987 case WindowEvent.WINDOW_CLOSING: 1988 case WindowEvent.WINDOW_CLOSED: 1989 case WindowEvent.WINDOW_ICONIFIED: 1990 case WindowEvent.WINDOW_DEICONIFIED: 1991 case WindowEvent.WINDOW_ACTIVATED: 1992 case WindowEvent.WINDOW_DEACTIVATED: 1993 if ((eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 || 1994 windowListener != null) { 1995 return true; 1996 } 1997 return false; 1998 case WindowEvent.WINDOW_GAINED_FOCUS: 1999 case WindowEvent.WINDOW_LOST_FOCUS: 2000 if ((eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 || 2001 windowFocusListener != null) { 2002 return true; 2003 } 2004 return false; 2005 case WindowEvent.WINDOW_STATE_CHANGED: 2006 if ((eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 || 2007 windowStateListener != null) { 2008 return true; 2009 } 2010 return false; 2011 default: 2012 break; 2013 } 2014 return super.eventEnabled(e); 2015 } 2016 2017 /** 2018 * Processes events on this window. If the event is an 2019 * {@code WindowEvent}, it invokes the 2020 * {@code processWindowEvent} method, else it invokes its 2021 * superclass's {@code processEvent}. 2022 * <p>Note that if the event parameter is {@code null} 2023 * the behavior is unspecified and may result in an 2024 * exception. 2025 * 2026 * @param e the event 2027 */ processEvent(AWTEvent e)2028 protected void processEvent(AWTEvent e) { 2029 if (e instanceof WindowEvent) { 2030 switch (e.getID()) { 2031 case WindowEvent.WINDOW_OPENED: 2032 case WindowEvent.WINDOW_CLOSING: 2033 case WindowEvent.WINDOW_CLOSED: 2034 case WindowEvent.WINDOW_ICONIFIED: 2035 case WindowEvent.WINDOW_DEICONIFIED: 2036 case WindowEvent.WINDOW_ACTIVATED: 2037 case WindowEvent.WINDOW_DEACTIVATED: 2038 processWindowEvent((WindowEvent)e); 2039 break; 2040 case WindowEvent.WINDOW_GAINED_FOCUS: 2041 case WindowEvent.WINDOW_LOST_FOCUS: 2042 processWindowFocusEvent((WindowEvent)e); 2043 break; 2044 case WindowEvent.WINDOW_STATE_CHANGED: 2045 processWindowStateEvent((WindowEvent)e); 2046 break; 2047 } 2048 return; 2049 } 2050 super.processEvent(e); 2051 } 2052 2053 /** 2054 * Processes window events occurring on this window by 2055 * dispatching them to any registered WindowListener objects. 2056 * NOTE: This method will not be called unless window events 2057 * are enabled for this component; this happens when one of the 2058 * following occurs: 2059 * <ul> 2060 * <li>A WindowListener object is registered via 2061 * {@code addWindowListener} 2062 * <li>Window events are enabled via {@code enableEvents} 2063 * </ul> 2064 * <p>Note that if the event parameter is {@code null} 2065 * the behavior is unspecified and may result in an 2066 * exception. 2067 * 2068 * @param e the window event 2069 * @see Component#enableEvents 2070 */ processWindowEvent(WindowEvent e)2071 protected void processWindowEvent(WindowEvent e) { 2072 WindowListener listener = windowListener; 2073 if (listener != null) { 2074 switch(e.getID()) { 2075 case WindowEvent.WINDOW_OPENED: 2076 listener.windowOpened(e); 2077 break; 2078 case WindowEvent.WINDOW_CLOSING: 2079 listener.windowClosing(e); 2080 break; 2081 case WindowEvent.WINDOW_CLOSED: 2082 listener.windowClosed(e); 2083 break; 2084 case WindowEvent.WINDOW_ICONIFIED: 2085 listener.windowIconified(e); 2086 break; 2087 case WindowEvent.WINDOW_DEICONIFIED: 2088 listener.windowDeiconified(e); 2089 break; 2090 case WindowEvent.WINDOW_ACTIVATED: 2091 listener.windowActivated(e); 2092 break; 2093 case WindowEvent.WINDOW_DEACTIVATED: 2094 listener.windowDeactivated(e); 2095 break; 2096 default: 2097 break; 2098 } 2099 } 2100 } 2101 2102 /** 2103 * Processes window focus event occurring on this window by 2104 * dispatching them to any registered WindowFocusListener objects. 2105 * NOTE: this method will not be called unless window focus events 2106 * are enabled for this window. This happens when one of the 2107 * following occurs: 2108 * <ul> 2109 * <li>a WindowFocusListener is registered via 2110 * {@code addWindowFocusListener} 2111 * <li>Window focus events are enabled via {@code enableEvents} 2112 * </ul> 2113 * <p>Note that if the event parameter is {@code null} 2114 * the behavior is unspecified and may result in an 2115 * exception. 2116 * 2117 * @param e the window focus event 2118 * @see Component#enableEvents 2119 * @since 1.4 2120 */ processWindowFocusEvent(WindowEvent e)2121 protected void processWindowFocusEvent(WindowEvent e) { 2122 WindowFocusListener listener = windowFocusListener; 2123 if (listener != null) { 2124 switch (e.getID()) { 2125 case WindowEvent.WINDOW_GAINED_FOCUS: 2126 listener.windowGainedFocus(e); 2127 break; 2128 case WindowEvent.WINDOW_LOST_FOCUS: 2129 listener.windowLostFocus(e); 2130 break; 2131 default: 2132 break; 2133 } 2134 } 2135 } 2136 2137 /** 2138 * Processes window state event occurring on this window by 2139 * dispatching them to any registered {@code WindowStateListener} 2140 * objects. 2141 * NOTE: this method will not be called unless window state events 2142 * are enabled for this window. This happens when one of the 2143 * following occurs: 2144 * <ul> 2145 * <li>a {@code WindowStateListener} is registered via 2146 * {@code addWindowStateListener} 2147 * <li>window state events are enabled via {@code enableEvents} 2148 * </ul> 2149 * <p>Note that if the event parameter is {@code null} 2150 * the behavior is unspecified and may result in an 2151 * exception. 2152 * 2153 * @param e the window state event 2154 * @see java.awt.Component#enableEvents 2155 * @since 1.4 2156 */ processWindowStateEvent(WindowEvent e)2157 protected void processWindowStateEvent(WindowEvent e) { 2158 WindowStateListener listener = windowStateListener; 2159 if (listener != null) { 2160 switch (e.getID()) { 2161 case WindowEvent.WINDOW_STATE_CHANGED: 2162 listener.windowStateChanged(e); 2163 break; 2164 default: 2165 break; 2166 } 2167 } 2168 } 2169 2170 /** 2171 * Implements a debugging hook -- checks to see if 2172 * the user has typed <i>control-shift-F1</i>. If so, 2173 * the list of child windows is dumped to {@code System.out}. 2174 * @param e the keyboard event 2175 */ preProcessKeyEvent(KeyEvent e)2176 void preProcessKeyEvent(KeyEvent e) { 2177 // Dump the list of child windows to System.out if debug is enabled. 2178 if (DebugSettings.getInstance().getBoolean("on", false)) { 2179 if (e.isActionKey() && e.getKeyCode() == KeyEvent.VK_F1 && 2180 e.isControlDown() && e.isShiftDown() && 2181 e.getID() == KeyEvent.KEY_PRESSED) { 2182 list(System.out, 0); 2183 } 2184 } 2185 } 2186 postProcessKeyEvent(KeyEvent e)2187 void postProcessKeyEvent(KeyEvent e) { 2188 // Do nothing 2189 } 2190 2191 2192 /** 2193 * Sets whether this window should always be above other windows. If 2194 * there are multiple always-on-top windows, their relative order is 2195 * unspecified and platform dependent. 2196 * <p> 2197 * If some other window is already always-on-top then the 2198 * relative order between these windows is unspecified (depends on 2199 * platform). No window can be brought to be over the always-on-top 2200 * window except maybe another always-on-top window. 2201 * <p> 2202 * All windows owned by an always-on-top window inherit this state and 2203 * automatically become always-on-top. If a window ceases to be 2204 * always-on-top, the windows that it owns will no longer be 2205 * always-on-top. When an always-on-top window is sent {@link #toBack 2206 * toBack}, its always-on-top state is set to {@code false}. 2207 * 2208 * <p> When this method is called on a window with a value of 2209 * {@code true}, and the window is visible and the platform 2210 * supports always-on-top for this window, the window is immediately 2211 * brought forward, "sticking" it in the top-most position. If the 2212 * window isn`t currently visible, this method sets the always-on-top 2213 * state to {@code true} but does not bring the window forward. 2214 * When the window is later shown, it will be always-on-top. 2215 * 2216 * <p> When this method is called on a window with a value of 2217 * {@code false} the always-on-top state is set to normal. It may also 2218 * cause an unspecified, platform-dependent change in the z-order of 2219 * top-level windows, but other always-on-top windows will remain in 2220 * top-most position. Calling this method with a value of {@code false} 2221 * on a window that has a normal state has no effect. 2222 * 2223 * <p><b>Note</b>: some platforms might not support always-on-top 2224 * windows. To detect if always-on-top windows are supported by the 2225 * current platform, use {@link Toolkit#isAlwaysOnTopSupported()} and 2226 * {@link Window#isAlwaysOnTopSupported()}. If always-on-top mode 2227 * isn't supported for this window or this window's toolkit does not 2228 * support always-on-top windows, calling this method has no effect. 2229 * <p> 2230 * If a SecurityManager is installed, the calling thread must be 2231 * granted the AWTPermission "setWindowAlwaysOnTop" in 2232 * order to set the value of this property. If this 2233 * permission is not granted, this method will throw a 2234 * SecurityException, and the current value of the property will 2235 * be left unchanged. 2236 * 2237 * @param alwaysOnTop true if the window should always be above other 2238 * windows 2239 * @throws SecurityException if the calling thread does not have 2240 * permission to set the value of always-on-top property 2241 * 2242 * @see #isAlwaysOnTop 2243 * @see #toFront 2244 * @see #toBack 2245 * @see AWTPermission 2246 * @see #isAlwaysOnTopSupported 2247 * @see #getToolkit 2248 * @see Toolkit#isAlwaysOnTopSupported 2249 * @since 1.5 2250 */ setAlwaysOnTop(boolean alwaysOnTop)2251 public final void setAlwaysOnTop(boolean alwaysOnTop) throws SecurityException { 2252 SecurityManager security = System.getSecurityManager(); 2253 if (security != null) { 2254 security.checkPermission(AWTPermissions.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION); 2255 } 2256 2257 boolean oldAlwaysOnTop; 2258 synchronized(this) { 2259 oldAlwaysOnTop = this.alwaysOnTop; 2260 this.alwaysOnTop = alwaysOnTop; 2261 } 2262 if (oldAlwaysOnTop != alwaysOnTop ) { 2263 if (isAlwaysOnTopSupported()) { 2264 WindowPeer peer = (WindowPeer)this.peer; 2265 synchronized(getTreeLock()) { 2266 if (peer != null) { 2267 peer.updateAlwaysOnTopState(); 2268 } 2269 } 2270 } 2271 firePropertyChange("alwaysOnTop", oldAlwaysOnTop, alwaysOnTop); 2272 } 2273 setOwnedWindowsAlwaysOnTop(alwaysOnTop); 2274 } 2275 2276 @SuppressWarnings({"rawtypes", "unchecked"}) setOwnedWindowsAlwaysOnTop(boolean alwaysOnTop)2277 private void setOwnedWindowsAlwaysOnTop(boolean alwaysOnTop) { 2278 WeakReference<Window>[] ownedWindowArray; 2279 synchronized (ownedWindowList) { 2280 ownedWindowArray = new WeakReference[ownedWindowList.size()]; 2281 ownedWindowList.copyInto(ownedWindowArray); 2282 } 2283 2284 for (WeakReference<Window> ref : ownedWindowArray) { 2285 Window window = ref.get(); 2286 if (window != null) { 2287 try { 2288 window.setAlwaysOnTop(alwaysOnTop); 2289 } catch (SecurityException ignore) { 2290 } 2291 } 2292 } 2293 } 2294 2295 /** 2296 * Returns whether the always-on-top mode is supported for this 2297 * window. Some platforms may not support always-on-top windows, some 2298 * may support only some kinds of top-level windows; for example, 2299 * a platform may not support always-on-top modal dialogs. 2300 * 2301 * @return {@code true}, if the always-on-top mode is supported for 2302 * this window and this window's toolkit supports always-on-top windows, 2303 * {@code false} otherwise 2304 * 2305 * @see #setAlwaysOnTop(boolean) 2306 * @see #getToolkit 2307 * @see Toolkit#isAlwaysOnTopSupported 2308 * @since 1.6 2309 */ isAlwaysOnTopSupported()2310 public boolean isAlwaysOnTopSupported() { 2311 return Toolkit.getDefaultToolkit().isAlwaysOnTopSupported(); 2312 } 2313 2314 2315 /** 2316 * Returns whether this window is an always-on-top window. 2317 * @return {@code true}, if the window is in always-on-top state, 2318 * {@code false} otherwise 2319 * @see #setAlwaysOnTop 2320 * @since 1.5 2321 */ isAlwaysOnTop()2322 public final boolean isAlwaysOnTop() { 2323 return alwaysOnTop; 2324 } 2325 2326 2327 /** 2328 * Returns the child Component of this Window that has focus if this Window 2329 * is focused; returns null otherwise. 2330 * 2331 * @return the child Component with focus, or null if this Window is not 2332 * focused 2333 * @see #getMostRecentFocusOwner 2334 * @see #isFocused 2335 */ getFocusOwner()2336 public Component getFocusOwner() { 2337 return (isFocused()) 2338 ? KeyboardFocusManager.getCurrentKeyboardFocusManager(). 2339 getFocusOwner() 2340 : null; 2341 } 2342 2343 /** 2344 * Returns the child Component of this Window that will receive the focus 2345 * when this Window is focused. If this Window is currently focused, this 2346 * method returns the same Component as {@code getFocusOwner()}. If 2347 * this Window is not focused, then the child Component that most recently 2348 * requested focus will be returned. If no child Component has ever 2349 * requested focus, and this is a focusable Window, then this Window's 2350 * initial focusable Component is returned. If no child Component has ever 2351 * requested focus, and this is a non-focusable Window, null is returned. 2352 * 2353 * @return the child Component that will receive focus when this Window is 2354 * focused 2355 * @see #getFocusOwner 2356 * @see #isFocused 2357 * @see #isFocusableWindow 2358 * @since 1.4 2359 */ getMostRecentFocusOwner()2360 public Component getMostRecentFocusOwner() { 2361 if (isFocused()) { 2362 return getFocusOwner(); 2363 } else { 2364 Component mostRecent = 2365 KeyboardFocusManager.getMostRecentFocusOwner(this); 2366 if (mostRecent != null) { 2367 return mostRecent; 2368 } else { 2369 return (isFocusableWindow()) 2370 ? getFocusTraversalPolicy().getInitialComponent(this) 2371 : null; 2372 } 2373 } 2374 } 2375 2376 /** 2377 * Returns whether this Window is active. Only a Frame or a Dialog may be 2378 * active. The native windowing system may denote the active Window or its 2379 * children with special decorations, such as a highlighted title bar. The 2380 * active Window is always either the focused Window, or the first Frame or 2381 * Dialog that is an owner of the focused Window. 2382 * 2383 * @return whether this is the active Window. 2384 * @see #isFocused 2385 * @since 1.4 2386 */ isActive()2387 public boolean isActive() { 2388 return (KeyboardFocusManager.getCurrentKeyboardFocusManager(). 2389 getActiveWindow() == this); 2390 } 2391 2392 /** 2393 * Returns whether this Window is focused. If there exists a focus owner, 2394 * the focused Window is the Window that is, or contains, that focus owner. 2395 * If there is no focus owner, then no Window is focused. 2396 * <p> 2397 * If the focused Window is a Frame or a Dialog it is also the active 2398 * Window. Otherwise, the active Window is the first Frame or Dialog that 2399 * is an owner of the focused Window. 2400 * 2401 * @return whether this is the focused Window. 2402 * @see #isActive 2403 * @since 1.4 2404 */ isFocused()2405 public boolean isFocused() { 2406 return (KeyboardFocusManager.getCurrentKeyboardFocusManager(). 2407 getGlobalFocusedWindow() == this); 2408 } 2409 2410 /** 2411 * Gets a focus traversal key for this Window. (See {@code 2412 * setFocusTraversalKeys} for a full description of each key.) 2413 * <p> 2414 * If the traversal key has not been explicitly set for this Window, 2415 * then this Window's parent's traversal key is returned. If the 2416 * traversal key has not been explicitly set for any of this Window's 2417 * ancestors, then the current KeyboardFocusManager's default traversal key 2418 * is returned. 2419 * 2420 * @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, 2421 * KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, 2422 * KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or 2423 * KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS 2424 * @return the AWTKeyStroke for the specified key 2425 * @see Container#setFocusTraversalKeys 2426 * @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS 2427 * @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS 2428 * @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS 2429 * @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS 2430 * @throws IllegalArgumentException if id is not one of 2431 * KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, 2432 * KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, 2433 * KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or 2434 * KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS 2435 * @since 1.4 2436 */ 2437 @SuppressWarnings("unchecked") getFocusTraversalKeys(int id)2438 public Set<AWTKeyStroke> getFocusTraversalKeys(int id) { 2439 if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH) { 2440 throw new IllegalArgumentException("invalid focus traversal key identifier"); 2441 } 2442 2443 // Okay to return Set directly because it is an unmodifiable view 2444 @SuppressWarnings("rawtypes") 2445 Set keystrokes = (focusTraversalKeys != null) 2446 ? focusTraversalKeys[id] 2447 : null; 2448 2449 if (keystrokes != null) { 2450 return keystrokes; 2451 } else { 2452 return KeyboardFocusManager.getCurrentKeyboardFocusManager(). 2453 getDefaultFocusTraversalKeys(id); 2454 } 2455 } 2456 2457 /** 2458 * Does nothing because Windows must always be roots of a focus traversal 2459 * cycle. The passed-in value is ignored. 2460 * 2461 * @param focusCycleRoot this value is ignored 2462 * @see #isFocusCycleRoot 2463 * @see Container#setFocusTraversalPolicy 2464 * @see Container#getFocusTraversalPolicy 2465 * @since 1.4 2466 */ setFocusCycleRoot(boolean focusCycleRoot)2467 public final void setFocusCycleRoot(boolean focusCycleRoot) { 2468 } 2469 2470 /** 2471 * Always returns {@code true} because all Windows must be roots of a 2472 * focus traversal cycle. 2473 * 2474 * @return {@code true} 2475 * @see #setFocusCycleRoot 2476 * @see Container#setFocusTraversalPolicy 2477 * @see Container#getFocusTraversalPolicy 2478 * @since 1.4 2479 */ isFocusCycleRoot()2480 public final boolean isFocusCycleRoot() { 2481 return true; 2482 } 2483 2484 /** 2485 * Always returns {@code null} because Windows have no ancestors; they 2486 * represent the top of the Component hierarchy. 2487 * 2488 * @return {@code null} 2489 * @see Container#isFocusCycleRoot() 2490 * @since 1.4 2491 */ getFocusCycleRootAncestor()2492 public final Container getFocusCycleRootAncestor() { 2493 return null; 2494 } 2495 2496 /** 2497 * Returns whether this Window can become the focused Window, that is, 2498 * whether this Window or any of its subcomponents can become the focus 2499 * owner. For a Frame or Dialog to be focusable, its focusable Window state 2500 * must be set to {@code true}. For a Window which is not a Frame or 2501 * Dialog to be focusable, its focusable Window state must be set to 2502 * {@code true}, its nearest owning Frame or Dialog must be 2503 * showing on the screen, and it must contain at least one Component in 2504 * its focus traversal cycle. If any of these conditions is not met, then 2505 * neither this Window nor any of its subcomponents can become the focus 2506 * owner. 2507 * 2508 * @return {@code true} if this Window can be the focused Window; 2509 * {@code false} otherwise 2510 * @see #getFocusableWindowState 2511 * @see #setFocusableWindowState 2512 * @see #isShowing 2513 * @see Component#isFocusable 2514 * @since 1.4 2515 */ isFocusableWindow()2516 public final boolean isFocusableWindow() { 2517 // If a Window/Frame/Dialog was made non-focusable, then it is always 2518 // non-focusable. 2519 if (!getFocusableWindowState()) { 2520 return false; 2521 } 2522 2523 // All other tests apply only to Windows. 2524 if (this instanceof Frame || this instanceof Dialog) { 2525 return true; 2526 } 2527 2528 // A Window must have at least one Component in its root focus 2529 // traversal cycle to be focusable. 2530 if (getFocusTraversalPolicy().getDefaultComponent(this) == null) { 2531 return false; 2532 } 2533 2534 // A Window's nearest owning Frame or Dialog must be showing on the 2535 // screen. 2536 for (Window owner = getOwner(); owner != null; 2537 owner = owner.getOwner()) 2538 { 2539 if (owner instanceof Frame || owner instanceof Dialog) { 2540 return owner.isShowing(); 2541 } 2542 } 2543 2544 return false; 2545 } 2546 2547 /** 2548 * Returns whether this Window can become the focused Window if it meets 2549 * the other requirements outlined in {@code isFocusableWindow}. If 2550 * this method returns {@code false}, then 2551 * {@code isFocusableWindow} will return {@code false} as well. 2552 * If this method returns {@code true}, then 2553 * {@code isFocusableWindow} may return {@code true} or 2554 * {@code false} depending upon the other requirements which must be 2555 * met in order for a Window to be focusable. 2556 * <p> 2557 * By default, all Windows have a focusable Window state of 2558 * {@code true}. 2559 * 2560 * @return whether this Window can be the focused Window 2561 * @see #isFocusableWindow 2562 * @see #setFocusableWindowState 2563 * @see #isShowing 2564 * @see Component#setFocusable 2565 * @since 1.4 2566 */ getFocusableWindowState()2567 public boolean getFocusableWindowState() { 2568 return focusableWindowState; 2569 } 2570 2571 /** 2572 * Sets whether this Window can become the focused Window if it meets 2573 * the other requirements outlined in {@code isFocusableWindow}. If 2574 * this Window's focusable Window state is set to {@code false}, then 2575 * {@code isFocusableWindow} will return {@code false}. If this 2576 * Window's focusable Window state is set to {@code true}, then 2577 * {@code isFocusableWindow} may return {@code true} or 2578 * {@code false} depending upon the other requirements which must be 2579 * met in order for a Window to be focusable. 2580 * <p> 2581 * Setting a Window's focusability state to {@code false} is the 2582 * standard mechanism for an application to identify to the AWT a Window 2583 * which will be used as a floating palette or toolbar, and thus should be 2584 * a non-focusable Window. 2585 * 2586 * Setting the focusability state on a visible {@code Window} 2587 * can have a delayed effect on some platforms — the actual 2588 * change may happen only when the {@code Window} becomes 2589 * hidden and then visible again. To ensure consistent behavior 2590 * across platforms, set the {@code Window}'s focusable state 2591 * when the {@code Window} is invisible and then show it. 2592 * 2593 * @param focusableWindowState whether this Window can be the focused 2594 * Window 2595 * @see #isFocusableWindow 2596 * @see #getFocusableWindowState 2597 * @see #isShowing 2598 * @see Component#setFocusable 2599 * @since 1.4 2600 */ setFocusableWindowState(boolean focusableWindowState)2601 public void setFocusableWindowState(boolean focusableWindowState) { 2602 boolean oldFocusableWindowState; 2603 synchronized (this) { 2604 oldFocusableWindowState = this.focusableWindowState; 2605 this.focusableWindowState = focusableWindowState; 2606 } 2607 WindowPeer peer = (WindowPeer)this.peer; 2608 if (peer != null) { 2609 peer.updateFocusableWindowState(); 2610 } 2611 firePropertyChange("focusableWindowState", oldFocusableWindowState, 2612 focusableWindowState); 2613 if (oldFocusableWindowState && !focusableWindowState && isFocused()) { 2614 for (Window owner = getOwner(); 2615 owner != null; 2616 owner = owner.getOwner()) 2617 { 2618 Component toFocus = 2619 KeyboardFocusManager.getMostRecentFocusOwner(owner); 2620 if (toFocus != null && toFocus.requestFocus(false, FocusEvent.Cause.ACTIVATION)) { 2621 return; 2622 } 2623 } 2624 KeyboardFocusManager.getCurrentKeyboardFocusManager(). 2625 clearGlobalFocusOwnerPriv(); 2626 } 2627 } 2628 2629 /** 2630 * Sets whether this window should receive focus on 2631 * subsequently being shown (with a call to {@link #setVisible setVisible(true)}), 2632 * or being moved to the front (with a call to {@link #toFront}). 2633 * <p> 2634 * Note that {@link #setVisible setVisible(true)} may be called indirectly 2635 * (e.g. when showing an owner of the window makes the window to be shown). 2636 * {@link #toFront} may also be called indirectly (e.g. when 2637 * {@link #setVisible setVisible(true)} is called on already visible window). 2638 * In all such cases this property takes effect as well. 2639 * <p> 2640 * The value of the property is not inherited by owned windows. 2641 * 2642 * @param autoRequestFocus whether this window should be focused on 2643 * subsequently being shown or being moved to the front 2644 * @see #isAutoRequestFocus 2645 * @see #isFocusableWindow 2646 * @see #setVisible 2647 * @see #toFront 2648 * @since 1.7 2649 */ setAutoRequestFocus(boolean autoRequestFocus)2650 public void setAutoRequestFocus(boolean autoRequestFocus) { 2651 this.autoRequestFocus = autoRequestFocus; 2652 } 2653 2654 /** 2655 * Returns whether this window should receive focus on subsequently being shown 2656 * (with a call to {@link #setVisible setVisible(true)}), or being moved to the front 2657 * (with a call to {@link #toFront}). 2658 * <p> 2659 * By default, the window has {@code autoRequestFocus} value of {@code true}. 2660 * 2661 * @return {@code autoRequestFocus} value 2662 * @see #setAutoRequestFocus 2663 * @since 1.7 2664 */ isAutoRequestFocus()2665 public boolean isAutoRequestFocus() { 2666 return autoRequestFocus; 2667 } 2668 2669 /** 2670 * Adds a PropertyChangeListener to the listener list. The listener is 2671 * registered for all bound properties of this class, including the 2672 * following: 2673 * <ul> 2674 * <li>this Window's font ("font")</li> 2675 * <li>this Window's background color ("background")</li> 2676 * <li>this Window's foreground color ("foreground")</li> 2677 * <li>this Window's focusability ("focusable")</li> 2678 * <li>this Window's focus traversal keys enabled state 2679 * ("focusTraversalKeysEnabled")</li> 2680 * <li>this Window's Set of FORWARD_TRAVERSAL_KEYS 2681 * ("forwardFocusTraversalKeys")</li> 2682 * <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS 2683 * ("backwardFocusTraversalKeys")</li> 2684 * <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS 2685 * ("upCycleFocusTraversalKeys")</li> 2686 * <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS 2687 * ("downCycleFocusTraversalKeys")</li> 2688 * <li>this Window's focus traversal policy ("focusTraversalPolicy") 2689 * </li> 2690 * <li>this Window's focusable Window state ("focusableWindowState") 2691 * </li> 2692 * <li>this Window's always-on-top state("alwaysOnTop")</li> 2693 * </ul> 2694 * Note that if this Window is inheriting a bound property, then no 2695 * event will be fired in response to a change in the inherited property. 2696 * <p> 2697 * If listener is null, no exception is thrown and no action is performed. 2698 * 2699 * @param listener the PropertyChangeListener to be added 2700 * 2701 * @see Component#removePropertyChangeListener 2702 * @see #addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener) 2703 */ addPropertyChangeListener(PropertyChangeListener listener)2704 public void addPropertyChangeListener(PropertyChangeListener listener) { 2705 super.addPropertyChangeListener(listener); 2706 } 2707 2708 /** 2709 * Adds a PropertyChangeListener to the listener list for a specific 2710 * property. The specified property may be user-defined, or one of the 2711 * following: 2712 * <ul> 2713 * <li>this Window's font ("font")</li> 2714 * <li>this Window's background color ("background")</li> 2715 * <li>this Window's foreground color ("foreground")</li> 2716 * <li>this Window's focusability ("focusable")</li> 2717 * <li>this Window's focus traversal keys enabled state 2718 * ("focusTraversalKeysEnabled")</li> 2719 * <li>this Window's Set of FORWARD_TRAVERSAL_KEYS 2720 * ("forwardFocusTraversalKeys")</li> 2721 * <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS 2722 * ("backwardFocusTraversalKeys")</li> 2723 * <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS 2724 * ("upCycleFocusTraversalKeys")</li> 2725 * <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS 2726 * ("downCycleFocusTraversalKeys")</li> 2727 * <li>this Window's focus traversal policy ("focusTraversalPolicy") 2728 * </li> 2729 * <li>this Window's focusable Window state ("focusableWindowState") 2730 * </li> 2731 * <li>this Window's always-on-top state("alwaysOnTop")</li> 2732 * </ul> 2733 * Note that if this Window is inheriting a bound property, then no 2734 * event will be fired in response to a change in the inherited property. 2735 * <p> 2736 * If listener is null, no exception is thrown and no action is performed. 2737 * 2738 * @param propertyName one of the property names listed above 2739 * @param listener the PropertyChangeListener to be added 2740 * 2741 * @see #addPropertyChangeListener(java.beans.PropertyChangeListener) 2742 * @see Component#removePropertyChangeListener 2743 */ addPropertyChangeListener(String propertyName, PropertyChangeListener listener)2744 public void addPropertyChangeListener(String propertyName, 2745 PropertyChangeListener listener) { 2746 super.addPropertyChangeListener(propertyName, listener); 2747 } 2748 2749 /** 2750 * Indicates if this container is a validate root. 2751 * <p> 2752 * {@code Window} objects are the validate roots, and, therefore, they 2753 * override this method to return {@code true}. 2754 * 2755 * @return {@code true} 2756 * @since 1.7 2757 * @see java.awt.Container#isValidateRoot 2758 */ 2759 @Override isValidateRoot()2760 public boolean isValidateRoot() { 2761 return true; 2762 } 2763 2764 /** 2765 * Dispatches an event to this window or one of its sub components. 2766 * @param e the event 2767 */ dispatchEventImpl(AWTEvent e)2768 void dispatchEventImpl(AWTEvent e) { 2769 if (e.getID() == ComponentEvent.COMPONENT_RESIZED) { 2770 invalidate(); 2771 validate(); 2772 } 2773 super.dispatchEventImpl(e); 2774 } 2775 2776 /** 2777 * @deprecated As of JDK version 1.1 2778 * replaced by {@code dispatchEvent(AWTEvent)}. 2779 */ 2780 @Deprecated postEvent(Event e)2781 public boolean postEvent(Event e) { 2782 if (handleEvent(e)) { 2783 e.consume(); 2784 return true; 2785 } 2786 return false; 2787 } 2788 2789 /** 2790 * Checks if this Window is showing on screen. 2791 * @see Component#setVisible 2792 */ isShowing()2793 public boolean isShowing() { 2794 return visible; 2795 } 2796 isDisposing()2797 boolean isDisposing() { 2798 return disposing; 2799 } 2800 2801 /** 2802 * @deprecated As of J2SE 1.4, replaced by 2803 * {@link Component#applyComponentOrientation Component.applyComponentOrientation}. 2804 * @param rb the resource bundle 2805 */ 2806 @Deprecated applyResourceBundle(ResourceBundle rb)2807 public void applyResourceBundle(ResourceBundle rb) { 2808 applyComponentOrientation(ComponentOrientation.getOrientation(rb)); 2809 } 2810 2811 /** 2812 * @deprecated As of J2SE 1.4, replaced by 2813 * {@link Component#applyComponentOrientation Component.applyComponentOrientation}. 2814 * @param rbName the resource name 2815 */ 2816 @Deprecated applyResourceBundle(String rbName)2817 public void applyResourceBundle(String rbName) { 2818 // Use the unnamed module from the TCCL or system class loader. 2819 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 2820 if (cl == null) { 2821 cl = ClassLoader.getSystemClassLoader(); 2822 } 2823 applyResourceBundle(ResourceBundle.getBundle(rbName, cl.getUnnamedModule())); 2824 } 2825 2826 /* 2827 * Support for tracking all windows owned by this window 2828 */ addOwnedWindow(WeakReference<Window> weakWindow)2829 void addOwnedWindow(WeakReference<Window> weakWindow) { 2830 if (weakWindow != null) { 2831 synchronized(ownedWindowList) { 2832 // this if statement should really be an assert, but we don't 2833 // have asserts... 2834 if (!ownedWindowList.contains(weakWindow)) { 2835 ownedWindowList.addElement(weakWindow); 2836 } 2837 } 2838 } 2839 } 2840 removeOwnedWindow(WeakReference<Window> weakWindow)2841 void removeOwnedWindow(WeakReference<Window> weakWindow) { 2842 if (weakWindow != null) { 2843 // synchronized block not required since removeElement is 2844 // already synchronized 2845 ownedWindowList.removeElement(weakWindow); 2846 } 2847 } 2848 connectOwnedWindow(Window child)2849 void connectOwnedWindow(Window child) { 2850 child.parent = this; 2851 addOwnedWindow(child.weakThis); 2852 child.disposerRecord.updateOwner(); 2853 } 2854 addToWindowList()2855 private void addToWindowList() { 2856 synchronized (Window.class) { 2857 @SuppressWarnings("unchecked") 2858 Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)appContext.get(Window.class); 2859 if (windowList == null) { 2860 windowList = new Vector<WeakReference<Window>>(); 2861 appContext.put(Window.class, windowList); 2862 } 2863 windowList.add(weakThis); 2864 } 2865 } 2866 removeFromWindowList(AppContext context, WeakReference<Window> weakThis)2867 private static void removeFromWindowList(AppContext context, WeakReference<Window> weakThis) { 2868 synchronized (Window.class) { 2869 @SuppressWarnings("unchecked") 2870 Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)context.get(Window.class); 2871 if (windowList != null) { 2872 windowList.remove(weakThis); 2873 } 2874 } 2875 } 2876 removeFromWindowList()2877 private void removeFromWindowList() { 2878 removeFromWindowList(appContext, weakThis); 2879 } 2880 2881 /** 2882 * Window type. 2883 * 2884 * Synchronization: ObjectLock 2885 */ 2886 private Type type = Type.NORMAL; 2887 2888 /** 2889 * Sets the type of the window. 2890 * 2891 * This method can only be called while the window is not displayable. 2892 * 2893 * @param type the window type 2894 * @throws IllegalComponentStateException if the window 2895 * is displayable. 2896 * @throws IllegalArgumentException if the type is {@code null} 2897 * @see Component#isDisplayable 2898 * @see #getType 2899 * @since 1.7 2900 */ setType(Type type)2901 public void setType(Type type) { 2902 if (type == null) { 2903 throw new IllegalArgumentException("type should not be null."); 2904 } 2905 synchronized (getTreeLock()) { 2906 if (isDisplayable()) { 2907 throw new IllegalComponentStateException( 2908 "The window is displayable."); 2909 } 2910 synchronized (getObjectLock()) { 2911 this.type = type; 2912 } 2913 } 2914 } 2915 2916 /** 2917 * Returns the type of the window. 2918 * 2919 * @return the type of the window 2920 * @see #setType 2921 * @since 1.7 2922 */ getType()2923 public Type getType() { 2924 synchronized (getObjectLock()) { 2925 return type; 2926 } 2927 } 2928 2929 /** 2930 * The window serialized data version. 2931 * 2932 * @serial 2933 */ 2934 private int windowSerializedDataVersion = 2; 2935 2936 /** 2937 * Writes default serializable fields to stream. Writes 2938 * a list of serializable {@code WindowListener}s and 2939 * {@code WindowFocusListener}s as optional data. 2940 * Writes a list of child windows as optional data. 2941 * Writes a list of icon images as optional data 2942 * 2943 * @param s the {@code ObjectOutputStream} to write 2944 * @throws IOException if an I/O error occurs 2945 * @serialData {@code null} terminated sequence of 2946 * 0 or more pairs; the pair consists of a {@code String} 2947 * and {@code Object}; the {@code String} 2948 * indicates the type of object and is one of the following: 2949 * {@code windowListenerK} indicating a 2950 * {@code WindowListener} object; 2951 * {@code windowFocusWindowK} indicating a 2952 * {@code WindowFocusListener} object; 2953 * {@code ownedWindowK} indicating a child 2954 * {@code Window} object 2955 * 2956 * @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener) 2957 * @see Component#windowListenerK 2958 * @see Component#windowFocusListenerK 2959 * @see Component#ownedWindowK 2960 * @see #readObject(ObjectInputStream) 2961 */ writeObject(ObjectOutputStream s)2962 private void writeObject(ObjectOutputStream s) throws IOException { 2963 synchronized (this) { 2964 // Update old focusMgr fields so that our object stream can be read 2965 // by previous releases 2966 focusMgr = new FocusManager(); 2967 focusMgr.focusRoot = this; 2968 focusMgr.focusOwner = getMostRecentFocusOwner(); 2969 2970 s.defaultWriteObject(); 2971 2972 // Clear fields so that we don't keep extra references around 2973 focusMgr = null; 2974 2975 AWTEventMulticaster.save(s, windowListenerK, windowListener); 2976 AWTEventMulticaster.save(s, windowFocusListenerK, windowFocusListener); 2977 AWTEventMulticaster.save(s, windowStateListenerK, windowStateListener); 2978 } 2979 2980 s.writeObject(null); 2981 2982 synchronized (ownedWindowList) { 2983 for (int i = 0; i < ownedWindowList.size(); i++) { 2984 Window child = ownedWindowList.elementAt(i).get(); 2985 if (child != null) { 2986 s.writeObject(ownedWindowK); 2987 s.writeObject(child); 2988 } 2989 } 2990 } 2991 s.writeObject(null); 2992 2993 //write icon array 2994 if (icons != null) { 2995 for (Image i : icons) { 2996 if (i instanceof Serializable) { 2997 s.writeObject(i); 2998 } 2999 } 3000 } 3001 s.writeObject(null); 3002 } 3003 3004 // 3005 // Part of deserialization procedure to be called before 3006 // user's code. 3007 // initDeserializedWindow()3008 private void initDeserializedWindow() { 3009 setWarningString(); 3010 inputContextLock = new Object(); 3011 3012 // Deserialized Windows are not yet visible. 3013 visible = false; 3014 3015 weakThis = new WeakReference<>(this); 3016 3017 anchor = new Object(); 3018 disposerRecord = new WindowDisposerRecord(appContext, this); 3019 sun.java2d.Disposer.addRecord(anchor, disposerRecord); 3020 3021 addToWindowList(); 3022 initGC(null); 3023 ownedWindowList = new Vector<>(); 3024 } 3025 deserializeResources(ObjectInputStream s)3026 private void deserializeResources(ObjectInputStream s) 3027 throws ClassNotFoundException, IOException, HeadlessException { 3028 3029 if (windowSerializedDataVersion < 2) { 3030 // Translate old-style focus tracking to new model. For 1.4 and 3031 // later releases, we'll rely on the Window's initial focusable 3032 // Component. 3033 if (focusMgr != null) { 3034 if (focusMgr.focusOwner != null) { 3035 KeyboardFocusManager. 3036 setMostRecentFocusOwner(this, focusMgr.focusOwner); 3037 } 3038 } 3039 3040 // This field is non-transient and relies on default serialization. 3041 // However, the default value is insufficient, so we need to set 3042 // it explicitly for object data streams prior to 1.4. 3043 focusableWindowState = true; 3044 3045 3046 } 3047 3048 Object keyOrNull; 3049 while(null != (keyOrNull = s.readObject())) { 3050 String key = ((String)keyOrNull).intern(); 3051 3052 if (windowListenerK == key) { 3053 addWindowListener((WindowListener)(s.readObject())); 3054 } else if (windowFocusListenerK == key) { 3055 addWindowFocusListener((WindowFocusListener)(s.readObject())); 3056 } else if (windowStateListenerK == key) { 3057 addWindowStateListener((WindowStateListener)(s.readObject())); 3058 } else // skip value for unrecognized key 3059 s.readObject(); 3060 } 3061 3062 try { 3063 while (null != (keyOrNull = s.readObject())) { 3064 String key = ((String)keyOrNull).intern(); 3065 3066 if (ownedWindowK == key) 3067 connectOwnedWindow((Window) s.readObject()); 3068 3069 else // skip value for unrecognized key 3070 s.readObject(); 3071 } 3072 3073 //read icons 3074 Object obj = s.readObject(); //Throws OptionalDataException 3075 //for pre1.6 objects. 3076 icons = new ArrayList<Image>(); //Frame.readObject() assumes 3077 //pre1.6 version if icons is null. 3078 while (obj != null) { 3079 if (obj instanceof Image) { 3080 icons.add((Image)obj); 3081 } 3082 obj = s.readObject(); 3083 } 3084 } 3085 catch (OptionalDataException e) { 3086 // 1.1 serialized form 3087 // ownedWindowList will be updated by Frame.readObject 3088 } 3089 3090 } 3091 3092 /** 3093 * Reads the {@code ObjectInputStream} and an optional 3094 * list of listeners to receive various events fired by 3095 * the component; also reads a list of 3096 * (possibly {@code null}) child windows. 3097 * Unrecognized keys or values will be ignored. 3098 * 3099 * @param s the {@code ObjectInputStream} to read 3100 * @throws ClassNotFoundException if the class of a serialized object could 3101 * not be found 3102 * @throws IOException if an I/O error occurs 3103 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()} 3104 * returns {@code true} 3105 * @see java.awt.GraphicsEnvironment#isHeadless 3106 * @see #writeObject 3107 */ readObject(ObjectInputStream s)3108 private void readObject(ObjectInputStream s) 3109 throws ClassNotFoundException, IOException, HeadlessException 3110 { 3111 GraphicsEnvironment.checkHeadless(); 3112 initDeserializedWindow(); 3113 ObjectInputStream.GetField f = s.readFields(); 3114 3115 syncLWRequests = f.get("syncLWRequests", systemSyncLWRequests); 3116 state = f.get("state", 0); 3117 focusableWindowState = f.get("focusableWindowState", true); 3118 windowSerializedDataVersion = f.get("windowSerializedDataVersion", 1); 3119 locationByPlatform = f.get("locationByPlatform", locationByPlatformProp); 3120 // Note: 1.4 (or later) doesn't use focusMgr 3121 focusMgr = (FocusManager)f.get("focusMgr", null); 3122 Dialog.ModalExclusionType et = (Dialog.ModalExclusionType) 3123 f.get("modalExclusionType", Dialog.ModalExclusionType.NO_EXCLUDE); 3124 setModalExclusionType(et); // since 6.0 3125 boolean aot = f.get("alwaysOnTop", false); 3126 if(aot) { 3127 setAlwaysOnTop(aot); // since 1.5; subject to permission check 3128 } 3129 shape = (Shape)f.get("shape", null); 3130 opacity = (Float)f.get("opacity", 1.0f); 3131 3132 this.securityWarningWidth = 0; 3133 this.securityWarningHeight = 0; 3134 3135 deserializeResources(s); 3136 } 3137 3138 /* 3139 * --- Accessibility Support --- 3140 * 3141 */ 3142 3143 /** 3144 * Gets the AccessibleContext associated with this Window. 3145 * For windows, the AccessibleContext takes the form of an 3146 * AccessibleAWTWindow. 3147 * A new AccessibleAWTWindow instance is created if necessary. 3148 * 3149 * @return an AccessibleAWTWindow that serves as the 3150 * AccessibleContext of this Window 3151 * @since 1.3 3152 */ getAccessibleContext()3153 public AccessibleContext getAccessibleContext() { 3154 if (accessibleContext == null) { 3155 accessibleContext = new AccessibleAWTWindow(); 3156 } 3157 return accessibleContext; 3158 } 3159 3160 /** 3161 * This class implements accessibility support for the 3162 * {@code Window} class. It provides an implementation of the 3163 * Java Accessibility API appropriate to window user-interface elements. 3164 * @since 1.3 3165 */ 3166 protected class AccessibleAWTWindow extends AccessibleAWTContainer 3167 { 3168 /* 3169 * JDK 1.3 serialVersionUID 3170 */ 3171 private static final long serialVersionUID = 4215068635060671780L; 3172 3173 /** 3174 * Constructs an {@code AccessibleAWTWindow}. 3175 */ AccessibleAWTWindow()3176 protected AccessibleAWTWindow() {} 3177 3178 /** 3179 * Get the role of this object. 3180 * 3181 * @return an instance of AccessibleRole describing the role of the 3182 * object 3183 * @see javax.accessibility.AccessibleRole 3184 */ getAccessibleRole()3185 public AccessibleRole getAccessibleRole() { 3186 return AccessibleRole.WINDOW; 3187 } 3188 3189 /** 3190 * Get the state of this object. 3191 * 3192 * @return an instance of AccessibleStateSet containing the current 3193 * state set of the object 3194 * @see javax.accessibility.AccessibleState 3195 */ getAccessibleStateSet()3196 public AccessibleStateSet getAccessibleStateSet() { 3197 AccessibleStateSet states = super.getAccessibleStateSet(); 3198 if (getFocusOwner() != null) { 3199 states.add(AccessibleState.ACTIVE); 3200 } 3201 return states; 3202 } 3203 3204 } // inner class AccessibleAWTWindow 3205 3206 @Override setGraphicsConfiguration(GraphicsConfiguration gc)3207 void setGraphicsConfiguration(GraphicsConfiguration gc) { 3208 if (gc == null) { 3209 gc = GraphicsEnvironment. 3210 getLocalGraphicsEnvironment(). 3211 getDefaultScreenDevice(). 3212 getDefaultConfiguration(); 3213 } 3214 synchronized (getTreeLock()) { 3215 super.setGraphicsConfiguration(gc); 3216 if (log.isLoggable(PlatformLogger.Level.FINER)) { 3217 log.finer("+ Window.setGraphicsConfiguration(): new GC is \n+ " + getGraphicsConfiguration_NoClientCode() + "\n+ this is " + this); 3218 } 3219 } 3220 } 3221 3222 /** 3223 * Sets the location of the window relative to the specified 3224 * component according to the following scenarios. 3225 * <p> 3226 * The target screen mentioned below is a screen to which 3227 * the window should be placed after the setLocationRelativeTo 3228 * method is called. 3229 * <ul> 3230 * <li>If the component is {@code null}, or the {@code 3231 * GraphicsConfiguration} associated with this component is 3232 * {@code null}, the window is placed in the center of the 3233 * screen. The center point can be obtained with the {@link 3234 * GraphicsEnvironment#getCenterPoint 3235 * GraphicsEnvironment.getCenterPoint} method. 3236 * <li>If the component is not {@code null}, but it is not 3237 * currently showing, the window is placed in the center of 3238 * the target screen defined by the {@code 3239 * GraphicsConfiguration} associated with this component. 3240 * <li>If the component is not {@code null} and is shown on 3241 * the screen, then the window is located in such a way that 3242 * the center of the window coincides with the center of the 3243 * component. 3244 * </ul> 3245 * <p> 3246 * If the screens configuration does not allow the window to 3247 * be moved from one screen to another, then the window is 3248 * only placed at the location determined according to the 3249 * above conditions and its {@code GraphicsConfiguration} is 3250 * not changed. 3251 * <p> 3252 * <b>Note</b>: If the lower edge of the window is out of the screen, 3253 * then the window is placed to the side of the {@code Component} 3254 * that is closest to the center of the screen. So if the 3255 * component is on the right part of the screen, the window 3256 * is placed to its left, and vice versa. 3257 * <p> 3258 * If after the window location has been calculated, the upper, 3259 * left, or right edge of the window is out of the screen, 3260 * then the window is located in such a way that the upper, 3261 * left, or right edge of the window coincides with the 3262 * corresponding edge of the screen. If both left and right 3263 * edges of the window are out of the screen, the window is 3264 * placed at the left side of the screen. The similar placement 3265 * will occur if both top and bottom edges are out of the screen. 3266 * In that case, the window is placed at the top side of the screen. 3267 * <p> 3268 * The method changes the geometry-related data. Therefore, 3269 * the native windowing system may ignore such requests, or it may modify 3270 * the requested data, so that the {@code Window} object is placed and sized 3271 * in a way that corresponds closely to the desktop settings. 3272 * 3273 * @param c the component in relation to which the window's location 3274 * is determined 3275 * @see java.awt.GraphicsEnvironment#getCenterPoint 3276 * @since 1.4 3277 */ setLocationRelativeTo(Component c)3278 public void setLocationRelativeTo(Component c) { 3279 // target location 3280 int dx = 0, dy = 0; 3281 // target GC 3282 GraphicsConfiguration gc = getGraphicsConfiguration_NoClientCode(); 3283 Rectangle gcBounds = gc.getBounds(); 3284 3285 Dimension windowSize = getSize(); 3286 3287 // search a top-level of c 3288 Window componentWindow = SunToolkit.getContainingWindow(c); 3289 if ((c == null) || (componentWindow == null)) { 3290 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); 3291 gc = ge.getDefaultScreenDevice().getDefaultConfiguration(); 3292 gcBounds = gc.getBounds(); 3293 Point centerPoint = ge.getCenterPoint(); 3294 dx = centerPoint.x - windowSize.width / 2; 3295 dy = centerPoint.y - windowSize.height / 2; 3296 } else if (!c.isShowing()) { 3297 gc = componentWindow.getGraphicsConfiguration(); 3298 gcBounds = gc.getBounds(); 3299 dx = gcBounds.x + (gcBounds.width - windowSize.width) / 2; 3300 dy = gcBounds.y + (gcBounds.height - windowSize.height) / 2; 3301 } else { 3302 gc = componentWindow.getGraphicsConfiguration(); 3303 gcBounds = gc.getBounds(); 3304 Dimension compSize = c.getSize(); 3305 Point compLocation = c.getLocationOnScreen(); 3306 dx = compLocation.x + ((compSize.width - windowSize.width) / 2); 3307 dy = compLocation.y + ((compSize.height - windowSize.height) / 2); 3308 3309 // Adjust for bottom edge being offscreen 3310 if (dy + windowSize.height > gcBounds.y + gcBounds.height) { 3311 dy = gcBounds.y + gcBounds.height - windowSize.height; 3312 if (compLocation.x - gcBounds.x + compSize.width / 2 < gcBounds.width / 2) { 3313 dx = compLocation.x + compSize.width; 3314 } else { 3315 dx = compLocation.x - windowSize.width; 3316 } 3317 } 3318 } 3319 3320 // Avoid being placed off the edge of the screen: 3321 // bottom 3322 if (dy + windowSize.height > gcBounds.y + gcBounds.height) { 3323 dy = gcBounds.y + gcBounds.height - windowSize.height; 3324 } 3325 // top 3326 if (dy < gcBounds.y) { 3327 dy = gcBounds.y; 3328 } 3329 // right 3330 if (dx + windowSize.width > gcBounds.x + gcBounds.width) { 3331 dx = gcBounds.x + gcBounds.width - windowSize.width; 3332 } 3333 // left 3334 if (dx < gcBounds.x) { 3335 dx = gcBounds.x; 3336 } 3337 3338 setLocation(dx, dy); 3339 } 3340 3341 /** 3342 * Overridden from Component. Top-level Windows should not propagate a 3343 * MouseWheelEvent beyond themselves into their owning Windows. 3344 */ deliverMouseWheelToAncestor(MouseWheelEvent e)3345 void deliverMouseWheelToAncestor(MouseWheelEvent e) {} 3346 3347 /** 3348 * Overridden from Component. Top-level Windows don't dispatch to ancestors 3349 */ dispatchMouseWheelToAncestor(MouseWheelEvent e)3350 boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) {return false;} 3351 3352 /** 3353 * Creates a new strategy for multi-buffering on this component. 3354 * Multi-buffering is useful for rendering performance. This method 3355 * attempts to create the best strategy available with the number of 3356 * buffers supplied. It will always create a {@code BufferStrategy} 3357 * with that number of buffers. 3358 * A page-flipping strategy is attempted first, then a blitting strategy 3359 * using accelerated buffers. Finally, an unaccelerated blitting 3360 * strategy is used. 3361 * <p> 3362 * Each time this method is called, 3363 * the existing buffer strategy for this component is discarded. 3364 * @param numBuffers number of buffers to create 3365 * @exception IllegalArgumentException if numBuffers is less than 1. 3366 * @exception IllegalStateException if the component is not displayable 3367 * @see #isDisplayable 3368 * @see #getBufferStrategy 3369 * @since 1.4 3370 */ createBufferStrategy(int numBuffers)3371 public void createBufferStrategy(int numBuffers) { 3372 super.createBufferStrategy(numBuffers); 3373 } 3374 3375 /** 3376 * Creates a new strategy for multi-buffering on this component with the 3377 * required buffer capabilities. This is useful, for example, if only 3378 * accelerated memory or page flipping is desired (as specified by the 3379 * buffer capabilities). 3380 * <p> 3381 * Each time this method 3382 * is called, the existing buffer strategy for this component is discarded. 3383 * @param numBuffers number of buffers to create, including the front buffer 3384 * @param caps the required capabilities for creating the buffer strategy; 3385 * cannot be {@code null} 3386 * @exception AWTException if the capabilities supplied could not be 3387 * supported or met; this may happen, for example, if there is not enough 3388 * accelerated memory currently available, or if page flipping is specified 3389 * but not possible. 3390 * @exception IllegalArgumentException if numBuffers is less than 1, or if 3391 * caps is {@code null} 3392 * @see #getBufferStrategy 3393 * @since 1.4 3394 */ createBufferStrategy(int numBuffers, BufferCapabilities caps)3395 public void createBufferStrategy(int numBuffers, 3396 BufferCapabilities caps) throws AWTException { 3397 super.createBufferStrategy(numBuffers, caps); 3398 } 3399 3400 /** 3401 * Returns the {@code BufferStrategy} used by this component. This 3402 * method will return null if a {@code BufferStrategy} has not yet 3403 * been created or has been disposed. 3404 * 3405 * @return the buffer strategy used by this component 3406 * @see #createBufferStrategy 3407 * @since 1.4 3408 */ getBufferStrategy()3409 public BufferStrategy getBufferStrategy() { 3410 return super.getBufferStrategy(); 3411 } 3412 getTemporaryLostComponent()3413 Component getTemporaryLostComponent() { 3414 return temporaryLostComponent; 3415 } setTemporaryLostComponent(Component component)3416 Component setTemporaryLostComponent(Component component) { 3417 Component previousComp = temporaryLostComponent; 3418 // Check that "component" is an acceptable focus owner and don't store it otherwise 3419 // - or later we will have problems with opposite while handling WINDOW_GAINED_FOCUS 3420 if (component == null || component.canBeFocusOwner()) { 3421 temporaryLostComponent = component; 3422 } else { 3423 temporaryLostComponent = null; 3424 } 3425 return previousComp; 3426 } 3427 3428 /** 3429 * Checks whether this window can contain focus owner. 3430 * Verifies that it is focusable and as container it can container focus owner. 3431 * @since 1.5 3432 */ canContainFocusOwner(Component focusOwnerCandidate)3433 boolean canContainFocusOwner(Component focusOwnerCandidate) { 3434 return super.canContainFocusOwner(focusOwnerCandidate) && isFocusableWindow(); 3435 } 3436 3437 /** 3438 * {@code true} if this Window should appear at the default location, 3439 * {@code false} if at the current location. 3440 */ 3441 private volatile boolean locationByPlatform = locationByPlatformProp; 3442 3443 3444 /** 3445 * Sets whether this Window should appear at the default location for the 3446 * native windowing system or at the current location (returned by 3447 * {@code getLocation}) the next time the Window is made visible. 3448 * This behavior resembles a native window shown without programmatically 3449 * setting its location. Most windowing systems cascade windows if their 3450 * locations are not explicitly set. The actual location is determined once the 3451 * window is shown on the screen. 3452 * <p> 3453 * This behavior can also be enabled by setting the System Property 3454 * "java.awt.Window.locationByPlatform" to "true", though calls to this method 3455 * take precedence. 3456 * <p> 3457 * Calls to {@code setVisible}, {@code setLocation} and 3458 * {@code setBounds} after calling {@code setLocationByPlatform} clear 3459 * this property of the Window. 3460 * <p> 3461 * For example, after the following code is executed: 3462 * <pre> 3463 * setLocationByPlatform(true); 3464 * setVisible(true); 3465 * boolean flag = isLocationByPlatform(); 3466 * </pre> 3467 * The window will be shown at platform's default location and 3468 * {@code flag} will be {@code false}. 3469 * <p> 3470 * In the following sample: 3471 * <pre> 3472 * setLocationByPlatform(true); 3473 * setLocation(10, 10); 3474 * boolean flag = isLocationByPlatform(); 3475 * setVisible(true); 3476 * </pre> 3477 * The window will be shown at (10, 10) and {@code flag} will be 3478 * {@code false}. 3479 * 3480 * @param locationByPlatform {@code true} if this Window should appear 3481 * at the default location, {@code false} if at the current location 3482 * @throws IllegalComponentStateException if the window 3483 * is showing on screen and locationByPlatform is {@code true}. 3484 * @see #setLocation 3485 * @see #isShowing 3486 * @see #setVisible 3487 * @see #isLocationByPlatform 3488 * @see java.lang.System#getProperty(String) 3489 * @since 1.5 3490 */ setLocationByPlatform(boolean locationByPlatform)3491 public void setLocationByPlatform(boolean locationByPlatform) { 3492 synchronized (getTreeLock()) { 3493 if (locationByPlatform && isShowing()) { 3494 throw new IllegalComponentStateException("The window is showing on screen."); 3495 } 3496 this.locationByPlatform = locationByPlatform; 3497 } 3498 } 3499 3500 /** 3501 * Returns {@code true} if this Window will appear at the default location 3502 * for the native windowing system the next time this Window is made visible. 3503 * This method always returns {@code false} if the Window is showing on the 3504 * screen. 3505 * 3506 * @return whether this Window will appear at the default location 3507 * @see #setLocationByPlatform 3508 * @see #isShowing 3509 * @since 1.5 3510 */ isLocationByPlatform()3511 public boolean isLocationByPlatform() { 3512 return locationByPlatform; 3513 } 3514 3515 /** 3516 * {@inheritDoc} 3517 * <p> 3518 * The {@code width} or {@code height} values 3519 * are automatically enlarged if either is less than 3520 * the minimum size as specified by previous call to 3521 * {@code setMinimumSize}. 3522 * <p> 3523 * The method changes the geometry-related data. Therefore, 3524 * the native windowing system may ignore such requests, or it may modify 3525 * the requested data, so that the {@code Window} object is placed and sized 3526 * in a way that corresponds closely to the desktop settings. 3527 * 3528 * @see #getBounds 3529 * @see #setLocation(int, int) 3530 * @see #setLocation(Point) 3531 * @see #setSize(int, int) 3532 * @see #setSize(Dimension) 3533 * @see #setMinimumSize 3534 * @see #setLocationByPlatform 3535 * @see #isLocationByPlatform 3536 * @since 1.6 3537 */ setBounds(int x, int y, int width, int height)3538 public void setBounds(int x, int y, int width, int height) { 3539 synchronized (getTreeLock()) { 3540 if (getBoundsOp() == ComponentPeer.SET_LOCATION || 3541 getBoundsOp() == ComponentPeer.SET_BOUNDS) 3542 { 3543 locationByPlatform = false; 3544 } 3545 super.setBounds(x, y, width, height); 3546 } 3547 } 3548 3549 /** 3550 * {@inheritDoc} 3551 * <p> 3552 * The {@code r.width} or {@code r.height} values 3553 * will be automatically enlarged if either is less than 3554 * the minimum size as specified by previous call to 3555 * {@code setMinimumSize}. 3556 * <p> 3557 * The method changes the geometry-related data. Therefore, 3558 * the native windowing system may ignore such requests, or it may modify 3559 * the requested data, so that the {@code Window} object is placed and sized 3560 * in a way that corresponds closely to the desktop settings. 3561 * 3562 * @see #getBounds 3563 * @see #setLocation(int, int) 3564 * @see #setLocation(Point) 3565 * @see #setSize(int, int) 3566 * @see #setSize(Dimension) 3567 * @see #setMinimumSize 3568 * @see #setLocationByPlatform 3569 * @see #isLocationByPlatform 3570 * @since 1.6 3571 */ setBounds(Rectangle r)3572 public void setBounds(Rectangle r) { 3573 setBounds(r.x, r.y, r.width, r.height); 3574 } 3575 3576 /** 3577 * Determines whether this component will be displayed on the screen. 3578 * @return {@code true} if the component and all of its ancestors 3579 * until a toplevel window are visible, {@code false} otherwise 3580 */ isRecursivelyVisible()3581 boolean isRecursivelyVisible() { 3582 // 5079694 fix: for a toplevel to be displayed, its parent doesn't have to be visible. 3583 // We're overriding isRecursivelyVisible to implement this policy. 3584 return visible; 3585 } 3586 3587 3588 // ******************** SHAPES & TRANSPARENCY CODE ******************** 3589 3590 /** 3591 * Returns the opacity of the window. 3592 * 3593 * @return the opacity of the window 3594 * 3595 * @see Window#setOpacity(float) 3596 * @see GraphicsDevice.WindowTranslucency 3597 * 3598 * @since 1.7 3599 */ getOpacity()3600 public float getOpacity() { 3601 return opacity; 3602 } 3603 3604 /** 3605 * Sets the opacity of the window. 3606 * <p> 3607 * The opacity value is in the range [0..1]. Note that setting the opacity 3608 * level of 0 may or may not disable the mouse event handling on this 3609 * window. This is a platform-dependent behavior. 3610 * <p> 3611 * The following conditions must be met in order to set the opacity value 3612 * less than {@code 1.0f}: 3613 * <ul> 3614 * <li>The {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT} 3615 * translucency must be supported by the underlying system 3616 * <li>The window must be undecorated (see {@link Frame#setUndecorated} 3617 * and {@link Dialog#setUndecorated}) 3618 * <li>The window must not be in full-screen mode (see {@link 3619 * GraphicsDevice#setFullScreenWindow(Window)}) 3620 * </ul> 3621 * <p> 3622 * If the requested opacity value is less than {@code 1.0f}, and any of the 3623 * above conditions are not met, the window opacity will not change, 3624 * and the {@code IllegalComponentStateException} will be thrown. 3625 * <p> 3626 * The translucency levels of individual pixels may also be effected by the 3627 * alpha component of their color (see {@link Window#setBackground(Color)}) and the 3628 * current shape of this window (see {@link #setShape(Shape)}). 3629 * 3630 * @param opacity the opacity level to set to the window 3631 * 3632 * @throws IllegalArgumentException if the opacity is out of the range 3633 * [0..1] 3634 * @throws IllegalComponentStateException if the window is decorated and 3635 * the opacity is less than {@code 1.0f} 3636 * @throws IllegalComponentStateException if the window is in full screen 3637 * mode, and the opacity is less than {@code 1.0f} 3638 * @throws UnsupportedOperationException if the {@code 3639 * GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT} 3640 * translucency is not supported and the opacity is less than 3641 * {@code 1.0f} 3642 * 3643 * @see Window#getOpacity 3644 * @see Window#setBackground(Color) 3645 * @see Window#setShape(Shape) 3646 * @see Frame#isUndecorated 3647 * @see Dialog#isUndecorated 3648 * @see GraphicsDevice.WindowTranslucency 3649 * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency) 3650 * 3651 * @since 1.7 3652 */ 3653 @SuppressWarnings("deprecation") setOpacity(float opacity)3654 public void setOpacity(float opacity) { 3655 synchronized (getTreeLock()) { 3656 if (opacity < 0.0f || opacity > 1.0f) { 3657 throw new IllegalArgumentException( 3658 "The value of opacity should be in the range [0.0f .. 1.0f]."); 3659 } 3660 if (opacity < 1.0f) { 3661 GraphicsConfiguration gc = getGraphicsConfiguration(); 3662 GraphicsDevice gd = gc.getDevice(); 3663 if (gc.getDevice().getFullScreenWindow() == this) { 3664 throw new IllegalComponentStateException( 3665 "Setting opacity for full-screen window is not supported."); 3666 } 3667 if (!gd.isWindowTranslucencySupported( 3668 GraphicsDevice.WindowTranslucency.TRANSLUCENT)) 3669 { 3670 throw new UnsupportedOperationException( 3671 "TRANSLUCENT translucency is not supported."); 3672 } 3673 } 3674 this.opacity = opacity; 3675 WindowPeer peer = (WindowPeer) this.peer; 3676 if (peer != null) { 3677 peer.setOpacity(opacity); 3678 } 3679 } 3680 } 3681 3682 /** 3683 * Returns the shape of the window. 3684 * 3685 * The value returned by this method may not be the same as 3686 * previously set with {@code setShape(shape)}, but it is guaranteed 3687 * to represent the same shape. 3688 * 3689 * @return the shape of the window or {@code null} if no 3690 * shape is specified for the window 3691 * 3692 * @see Window#setShape(Shape) 3693 * @see GraphicsDevice.WindowTranslucency 3694 * 3695 * @since 1.7 3696 */ getShape()3697 public Shape getShape() { 3698 synchronized (getTreeLock()) { 3699 return shape == null ? null : new Path2D.Float(shape); 3700 } 3701 } 3702 3703 /** 3704 * Sets the shape of the window. 3705 * <p> 3706 * Setting a shape cuts off some parts of the window. Only the parts that 3707 * belong to the given {@link Shape} remain visible and clickable. If 3708 * the shape argument is {@code null}, this method restores the default 3709 * shape, making the window rectangular on most platforms. 3710 * <p> 3711 * The following conditions must be met to set a non-null shape: 3712 * <ul> 3713 * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT 3714 * PERPIXEL_TRANSPARENT} translucency must be supported by the 3715 * underlying system 3716 * <li>The window must be undecorated (see {@link Frame#setUndecorated} 3717 * and {@link Dialog#setUndecorated}) 3718 * <li>The window must not be in full-screen mode (see {@link 3719 * GraphicsDevice#setFullScreenWindow(Window)}) 3720 * </ul> 3721 * <p> 3722 * If the requested shape is not {@code null}, and any of the above 3723 * conditions are not met, the shape of this window will not change, 3724 * and either the {@code UnsupportedOperationException} or {@code 3725 * IllegalComponentStateException} will be thrown. 3726 * <p> 3727 * The translucency levels of individual pixels may also be effected by the 3728 * alpha component of their color (see {@link Window#setBackground(Color)}) and the 3729 * opacity value (see {@link #setOpacity(float)}). See {@link 3730 * GraphicsDevice.WindowTranslucency} for more details. 3731 * 3732 * @param shape the shape to set to the window 3733 * 3734 * @throws IllegalComponentStateException if the shape is not {@code 3735 * null} and the window is decorated 3736 * @throws IllegalComponentStateException if the shape is not {@code 3737 * null} and the window is in full-screen mode 3738 * @throws UnsupportedOperationException if the shape is not {@code 3739 * null} and {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT 3740 * PERPIXEL_TRANSPARENT} translucency is not supported 3741 * 3742 * @see Window#getShape() 3743 * @see Window#setBackground(Color) 3744 * @see Window#setOpacity(float) 3745 * @see Frame#isUndecorated 3746 * @see Dialog#isUndecorated 3747 * @see GraphicsDevice.WindowTranslucency 3748 * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency) 3749 * 3750 * @since 1.7 3751 */ setShape(Shape shape)3752 public void setShape(Shape shape) { 3753 synchronized (getTreeLock()) { 3754 if (shape != null) { 3755 GraphicsConfiguration gc = getGraphicsConfiguration(); 3756 GraphicsDevice gd = gc.getDevice(); 3757 if (gc.getDevice().getFullScreenWindow() == this) { 3758 throw new IllegalComponentStateException( 3759 "Setting shape for full-screen window is not supported."); 3760 } 3761 if (!gd.isWindowTranslucencySupported( 3762 GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSPARENT)) 3763 { 3764 throw new UnsupportedOperationException( 3765 "PERPIXEL_TRANSPARENT translucency is not supported."); 3766 } 3767 } 3768 this.shape = (shape == null) ? null : new Path2D.Float(shape); 3769 WindowPeer peer = (WindowPeer) this.peer; 3770 if (peer != null) { 3771 peer.applyShape(shape == null ? null : Region.getInstance(shape, null)); 3772 } 3773 } 3774 } 3775 3776 /** 3777 * Gets the background color of this window. 3778 * <p> 3779 * Note that the alpha component of the returned color indicates whether 3780 * the window is in the non-opaque (per-pixel translucent) mode. 3781 * 3782 * @return this component's background color 3783 * 3784 * @see Window#setBackground(Color) 3785 * @see Window#isOpaque 3786 * @see GraphicsDevice.WindowTranslucency 3787 */ 3788 @Override getBackground()3789 public Color getBackground() { 3790 return super.getBackground(); 3791 } 3792 3793 /** 3794 * Sets the background color of this window. 3795 * <p> 3796 * If the windowing system supports the {@link 3797 * GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT} 3798 * translucency, the alpha component of the given background color 3799 * may effect the mode of operation for this window: it indicates whether 3800 * this window must be opaque (alpha equals {@code 1.0f}) or per-pixel translucent 3801 * (alpha is less than {@code 1.0f}). If the given background color is 3802 * {@code null}, the window is considered completely opaque. 3803 * <p> 3804 * All the following conditions must be met to enable the per-pixel 3805 * transparency mode for this window: 3806 * <ul> 3807 * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT 3808 * PERPIXEL_TRANSLUCENT} translucency must be supported by the graphics 3809 * device where this window is located 3810 * <li>The window must be undecorated (see {@link Frame#setUndecorated} 3811 * and {@link Dialog#setUndecorated}) 3812 * <li>The window must not be in full-screen mode (see {@link 3813 * GraphicsDevice#setFullScreenWindow(Window)}) 3814 * </ul> 3815 * <p> 3816 * If the alpha component of the requested background color is less than 3817 * {@code 1.0f}, and any of the above conditions are not met, the background 3818 * color of this window will not change, the alpha component of the given 3819 * background color will not affect the mode of operation for this window, 3820 * and either the {@code UnsupportedOperationException} or {@code 3821 * IllegalComponentStateException} will be thrown. 3822 * <p> 3823 * When the window is per-pixel translucent, the drawing sub-system 3824 * respects the alpha value of each individual pixel. If a pixel gets 3825 * painted with the alpha color component equal to zero, it becomes 3826 * visually transparent. If the alpha of the pixel is equal to 1.0f, the 3827 * pixel is fully opaque. Interim values of the alpha color component make 3828 * the pixel semi-transparent. In this mode, the background of the window 3829 * gets painted with the alpha value of the given background color. If the 3830 * alpha value of the argument of this method is equal to {@code 0}, the 3831 * background is not painted at all. 3832 * <p> 3833 * The actual level of translucency of a given pixel also depends on window 3834 * opacity (see {@link #setOpacity(float)}), as well as the current shape of 3835 * this window (see {@link #setShape(Shape)}). 3836 * <p> 3837 * Note that painting a pixel with the alpha value of {@code 0} may or may 3838 * not disable the mouse event handling on this pixel. This is a 3839 * platform-dependent behavior. To make sure the mouse events do not get 3840 * dispatched to a particular pixel, the pixel must be excluded from the 3841 * shape of the window. 3842 * <p> 3843 * Enabling the per-pixel translucency mode may change the graphics 3844 * configuration of this window due to the native platform requirements. 3845 * 3846 * @param bgColor the color to become this window's background color. 3847 * 3848 * @throws IllegalComponentStateException if the alpha value of the given 3849 * background color is less than {@code 1.0f} and the window is decorated 3850 * @throws IllegalComponentStateException if the alpha value of the given 3851 * background color is less than {@code 1.0f} and the window is in 3852 * full-screen mode 3853 * @throws UnsupportedOperationException if the alpha value of the given 3854 * background color is less than {@code 1.0f} and {@link 3855 * GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT 3856 * PERPIXEL_TRANSLUCENT} translucency is not supported 3857 * 3858 * @see Window#getBackground 3859 * @see Window#isOpaque 3860 * @see Window#setOpacity(float) 3861 * @see Window#setShape(Shape) 3862 * @see Frame#isUndecorated 3863 * @see Dialog#isUndecorated 3864 * @see GraphicsDevice.WindowTranslucency 3865 * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency) 3866 * @see GraphicsConfiguration#isTranslucencyCapable() 3867 */ 3868 @Override setBackground(Color bgColor)3869 public void setBackground(Color bgColor) { 3870 Color oldBg = getBackground(); 3871 super.setBackground(bgColor); 3872 if (oldBg != null && oldBg.equals(bgColor)) { 3873 return; 3874 } 3875 int oldAlpha = oldBg != null ? oldBg.getAlpha() : 255; 3876 int alpha = bgColor != null ? bgColor.getAlpha() : 255; 3877 if ((oldAlpha == 255) && (alpha < 255)) { // non-opaque window 3878 GraphicsConfiguration gc = getGraphicsConfiguration(); 3879 GraphicsDevice gd = gc.getDevice(); 3880 if (gc.getDevice().getFullScreenWindow() == this) { 3881 throw new IllegalComponentStateException( 3882 "Making full-screen window non opaque is not supported."); 3883 } 3884 if (!gc.isTranslucencyCapable()) { 3885 GraphicsConfiguration capableGC = gd.getTranslucencyCapableGC(); 3886 if (capableGC == null) { 3887 throw new UnsupportedOperationException( 3888 "PERPIXEL_TRANSLUCENT translucency is not supported"); 3889 } 3890 setGraphicsConfiguration(capableGC); 3891 } 3892 setLayersOpaque(this, false); 3893 } else if ((oldAlpha < 255) && (alpha == 255)) { 3894 setLayersOpaque(this, true); 3895 } 3896 WindowPeer peer = (WindowPeer) this.peer; 3897 if (peer != null) { 3898 peer.setOpaque(alpha == 255); 3899 } 3900 } 3901 3902 /** 3903 * Indicates if the window is currently opaque. 3904 * <p> 3905 * The method returns {@code false} if the background color of the window 3906 * is not {@code null} and the alpha component of the color is less than 3907 * {@code 1.0f}. The method returns {@code true} otherwise. 3908 * 3909 * @return {@code true} if the window is opaque, {@code false} otherwise 3910 * 3911 * @see Window#getBackground 3912 * @see Window#setBackground(Color) 3913 * @since 1.7 3914 */ 3915 @Override isOpaque()3916 public boolean isOpaque() { 3917 Color bg = getBackground(); 3918 return bg != null ? bg.getAlpha() == 255 : true; 3919 } 3920 updateWindow()3921 private void updateWindow() { 3922 synchronized (getTreeLock()) { 3923 WindowPeer peer = (WindowPeer) this.peer; 3924 if (peer != null) { 3925 peer.updateWindow(); 3926 } 3927 } 3928 } 3929 3930 /** 3931 * {@inheritDoc} 3932 * 3933 * @since 1.7 3934 */ 3935 @Override paint(Graphics g)3936 public void paint(Graphics g) { 3937 if (!isOpaque()) { 3938 Graphics gg = g.create(); 3939 try { 3940 if (gg instanceof Graphics2D) { 3941 gg.setColor(getBackground()); 3942 ((Graphics2D)gg).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC)); 3943 gg.fillRect(0, 0, getWidth(), getHeight()); 3944 } 3945 } finally { 3946 gg.dispose(); 3947 } 3948 } 3949 super.paint(g); 3950 } 3951 setLayersOpaque(Component component, boolean isOpaque)3952 private static void setLayersOpaque(Component component, boolean isOpaque) { 3953 // Shouldn't use instanceof to avoid loading Swing classes 3954 // if it's a pure AWT application. 3955 if (SunToolkit.isInstanceOf(component, "javax.swing.RootPaneContainer")) { 3956 javax.swing.RootPaneContainer rpc = (javax.swing.RootPaneContainer)component; 3957 javax.swing.JRootPane root = rpc.getRootPane(); 3958 javax.swing.JLayeredPane lp = root.getLayeredPane(); 3959 Container c = root.getContentPane(); 3960 javax.swing.JComponent content = 3961 (c instanceof javax.swing.JComponent) ? (javax.swing.JComponent)c : null; 3962 lp.setOpaque(isOpaque); 3963 root.setOpaque(isOpaque); 3964 if (content != null) { 3965 content.setOpaque(isOpaque); 3966 3967 // Iterate down one level to see whether we have a JApplet 3968 // (which is also a RootPaneContainer) which requires processing 3969 int numChildren = content.getComponentCount(); 3970 if (numChildren > 0) { 3971 Component child = content.getComponent(0); 3972 // It's OK to use instanceof here because we've 3973 // already loaded the RootPaneContainer class by now 3974 if (child instanceof javax.swing.RootPaneContainer) { 3975 setLayersOpaque(child, isOpaque); 3976 } 3977 } 3978 } 3979 } 3980 } 3981 3982 3983 // ************************** MIXING CODE ******************************* 3984 3985 // A window has an owner, but it does NOT have a container 3986 @Override getContainer()3987 final Container getContainer() { 3988 return null; 3989 } 3990 3991 /** 3992 * Applies the shape to the component 3993 * @param shape Shape to be applied to the component 3994 */ 3995 @Override applyCompoundShape(Region shape)3996 final void applyCompoundShape(Region shape) { 3997 // The shape calculated by mixing code is not intended to be applied 3998 // to windows or frames 3999 } 4000 4001 @Override applyCurrentShape()4002 final void applyCurrentShape() { 4003 // The shape calculated by mixing code is not intended to be applied 4004 // to windows or frames 4005 } 4006 4007 @Override mixOnReshaping()4008 final void mixOnReshaping() { 4009 // The shape calculated by mixing code is not intended to be applied 4010 // to windows or frames 4011 } 4012 4013 @Override getLocationOnWindow()4014 final Point getLocationOnWindow() { 4015 return new Point(0, 0); 4016 } 4017 4018 // ****************** END OF MIXING CODE ******************************** 4019 4020 /** 4021 * Limit the given double value with the given range. 4022 */ limit(double value, double min, double max)4023 private static double limit(double value, double min, double max) { 4024 value = Math.max(value, min); 4025 value = Math.min(value, max); 4026 return value; 4027 } 4028 4029 /** 4030 * Calculate the position of the security warning. 4031 * 4032 * This method gets the window location/size as reported by the native 4033 * system since the locally cached values may represent outdated data. 4034 * 4035 * The method is used from the native code, or via AWTAccessor. 4036 * 4037 * NOTE: this method is invoked on the toolkit thread, and therefore is not 4038 * supposed to become public/user-overridable. 4039 */ calculateSecurityWarningPosition(double x, double y, double w, double h)4040 private Point2D calculateSecurityWarningPosition(double x, double y, 4041 double w, double h) 4042 { 4043 // The desired location for the security warning 4044 double wx = x + w * RIGHT_ALIGNMENT + 2.0; 4045 double wy = y + h * TOP_ALIGNMENT + 0.0; 4046 4047 // First, make sure the warning is not too far from the window bounds 4048 wx = Window.limit(wx, 4049 x - securityWarningWidth - 2, 4050 x + w + 2); 4051 wy = Window.limit(wy, 4052 y - securityWarningHeight - 2, 4053 y + h + 2); 4054 4055 // Now make sure the warning window is visible on the screen 4056 GraphicsConfiguration graphicsConfig = 4057 getGraphicsConfiguration_NoClientCode(); 4058 Rectangle screenBounds = graphicsConfig.getBounds(); 4059 Insets screenInsets = 4060 Toolkit.getDefaultToolkit().getScreenInsets(graphicsConfig); 4061 4062 wx = Window.limit(wx, 4063 screenBounds.x + screenInsets.left, 4064 screenBounds.x + screenBounds.width - screenInsets.right 4065 - securityWarningWidth); 4066 wy = Window.limit(wy, 4067 screenBounds.y + screenInsets.top, 4068 screenBounds.y + screenBounds.height - screenInsets.bottom 4069 - securityWarningHeight); 4070 4071 return new Point2D.Double(wx, wy); 4072 } 4073 4074 static { AWTAccessor.setWindowAccessor(new AWTAccessor.WindowAccessor() { public void updateWindow(Window window) { window.updateWindow(); } public void setSecurityWarningSize(Window window, int width, int height) { window.securityWarningWidth = width; window.securityWarningHeight = height; } public Point2D calculateSecurityWarningPosition(Window window, double x, double y, double w, double h) { return window.calculateSecurityWarningPosition(x, y, w, h); } public void setLWRequestStatus(Window changed, boolean status) { changed.syncLWRequests = status; } public boolean isAutoRequestFocus(Window w) { return w.autoRequestFocus; } public boolean isTrayIconWindow(Window w) { return w.isTrayIconWindow; } public void setTrayIconWindow(Window w, boolean isTrayIconWindow) { w.isTrayIconWindow = isTrayIconWindow; } public Window[] getOwnedWindows(Window w) { return w.getOwnedWindows_NoClientCode(); } })4075 AWTAccessor.setWindowAccessor(new AWTAccessor.WindowAccessor() { 4076 public void updateWindow(Window window) { 4077 window.updateWindow(); 4078 } 4079 4080 public void setSecurityWarningSize(Window window, int width, int height) 4081 { 4082 window.securityWarningWidth = width; 4083 window.securityWarningHeight = height; 4084 } 4085 4086 public Point2D calculateSecurityWarningPosition(Window window, 4087 double x, double y, double w, double h) 4088 { 4089 return window.calculateSecurityWarningPosition(x, y, w, h); 4090 } 4091 4092 public void setLWRequestStatus(Window changed, boolean status) { 4093 changed.syncLWRequests = status; 4094 } 4095 4096 public boolean isAutoRequestFocus(Window w) { 4097 return w.autoRequestFocus; 4098 } 4099 4100 public boolean isTrayIconWindow(Window w) { 4101 return w.isTrayIconWindow; 4102 } 4103 4104 public void setTrayIconWindow(Window w, boolean isTrayIconWindow) { 4105 w.isTrayIconWindow = isTrayIconWindow; 4106 } 4107 4108 public Window[] getOwnedWindows(Window w) { 4109 return w.getOwnedWindows_NoClientCode(); 4110 } 4111 }); // WindowAccessor 4112 } // static 4113 4114 // a window doesn't need to be updated in the Z-order. 4115 @Override updateZOrder()4116 void updateZOrder() {} 4117 4118 } // class Window 4119 4120 4121 /** 4122 * This class is no longer used, but is maintained for Serialization 4123 * backward-compatibility. 4124 */ 4125 class FocusManager implements java.io.Serializable { 4126 Container focusRoot; 4127 Component focusOwner; 4128 4129 /* 4130 * JDK 1.1 serialVersionUID 4131 */ 4132 static final long serialVersionUID = 2491878825643557906L; 4133 } 4134