| /* |
| * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt; |
| |
| import java.awt.*; |
| import java.awt.event.InputEvent; |
| import java.awt.event.KeyEvent; |
| import java.awt.event.WindowEvent; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.ColorModel; |
| import java.awt.image.DataBuffer; |
| import java.awt.image.DataBufferInt; |
| import java.awt.image.ImageObserver; |
| import java.awt.image.ImageProducer; |
| import java.awt.image.Raster; |
| import java.awt.peer.FramePeer; |
| import java.awt.peer.KeyboardFocusManagerPeer; |
| import java.awt.peer.MouseInfoPeer; |
| import java.awt.peer.SystemTrayPeer; |
| import java.awt.peer.TrayIconPeer; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.reflect.InvocationTargetException; |
| import java.net.URL; |
| import java.security.AccessController; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.Vector; |
| import java.util.WeakHashMap; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.locks.Condition; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| import sun.awt.im.InputContext; |
| import sun.awt.image.ByteArrayImageSource; |
| import sun.awt.image.FileImageSource; |
| import sun.awt.image.ImageRepresentation; |
| import java.awt.image.MultiResolutionImage; |
| import sun.awt.image.MultiResolutionToolkitImage; |
| import sun.awt.image.ToolkitImage; |
| import sun.awt.image.URLImageSource; |
| import sun.font.FontDesignMetrics; |
| import sun.net.util.URLUtil; |
| import sun.security.action.GetBooleanAction; |
| import sun.security.action.GetPropertyAction; |
| import sun.util.logging.PlatformLogger; |
| |
| import static java.awt.RenderingHints.*; |
| |
| public abstract class SunToolkit extends Toolkit |
| implements ComponentFactory, InputMethodSupport, KeyboardFocusManagerPeerProvider { |
| |
| // 8014718: logging has been removed from SunToolkit |
| |
| /* Load debug settings for native code */ |
| static { |
| if (AccessController.doPrivileged(new GetBooleanAction("sun.awt.nativedebug"))) { |
| DebugSettings.init(); |
| } |
| }; |
| |
| /** |
| * Special mask for the UngrabEvent events, in addition to the |
| * public masks defined in AWTEvent. Should be used as the mask |
| * value for Toolkit.addAWTEventListener. |
| */ |
| public static final int GRAB_EVENT_MASK = 0x80000000; |
| |
| /* The key to put()/get() the PostEventQueue into/from the AppContext. |
| */ |
| private static final String POST_EVENT_QUEUE_KEY = "PostEventQueue"; |
| |
| /** |
| * Number of buttons. |
| * By default it's taken from the system. If system value does not |
| * fit into int type range, use our own MAX_BUTTONS_SUPPORT value. |
| */ |
| protected static int numberOfButtons = 0; |
| |
| |
| /* XFree standard mention 24 buttons as maximum: |
| * http://www.xfree86.org/current/mouse.4.html |
| * We workaround systems supporting more than 24 buttons. |
| * Otherwise, we have to use long type values as masks |
| * which leads to API change. |
| * InputEvent.BUTTON_DOWN_MASK may contain only 21 masks due to |
| * the 4-bytes limit for the int type. (CR 6799099) |
| * One more bit is reserved for FIRST_HIGH_BIT. |
| */ |
| public static final int MAX_BUTTONS_SUPPORTED = 20; |
| |
| /** |
| * Creates and initializes EventQueue instance for the specified |
| * AppContext. |
| * Note that event queue must be created from createNewAppContext() |
| * only in order to ensure that EventQueue constructor obtains |
| * the correct AppContext. |
| * @param appContext AppContext to associate with the event queue |
| */ |
| private static void initEQ(AppContext appContext) { |
| EventQueue eventQueue = new EventQueue(); |
| appContext.put(AppContext.EVENT_QUEUE_KEY, eventQueue); |
| |
| PostEventQueue postEventQueue = new PostEventQueue(eventQueue); |
| appContext.put(POST_EVENT_QUEUE_KEY, postEventQueue); |
| } |
| |
| public SunToolkit() { |
| } |
| |
| public boolean useBufferPerWindow() { |
| return false; |
| } |
| |
| public abstract FramePeer createLightweightFrame(LightweightFrame target) |
| throws HeadlessException; |
| |
| public abstract TrayIconPeer createTrayIcon(TrayIcon target) |
| throws HeadlessException, AWTException; |
| |
| public abstract SystemTrayPeer createSystemTray(SystemTray target); |
| |
| public abstract boolean isTraySupported(); |
| |
| @Override |
| public abstract KeyboardFocusManagerPeer getKeyboardFocusManagerPeer() |
| throws HeadlessException; |
| |
| /** |
| * The AWT lock is typically only used on Unix platforms to synchronize |
| * access to Xlib, OpenGL, etc. However, these methods are implemented |
| * in SunToolkit so that they can be called from shared code (e.g. |
| * from the OGL pipeline) or from the X11 pipeline regardless of whether |
| * XToolkit or MToolkit is currently in use. There are native macros |
| * (such as AWT_LOCK) defined in awt.h, so if the implementation of these |
| * methods is changed, make sure it is compatible with the native macros. |
| * |
| * Note: The following methods (awtLock(), awtUnlock(), etc) should be |
| * used in place of: |
| * synchronized (getAWTLock()) { |
| * ... |
| * } |
| * |
| * By factoring these methods out specially, we are able to change the |
| * implementation of these methods (e.g. use more advanced locking |
| * mechanisms) without impacting calling code. |
| * |
| * Sample usage: |
| * private void doStuffWithXlib() { |
| * assert !SunToolkit.isAWTLockHeldByCurrentThread(); |
| * SunToolkit.awtLock(); |
| * try { |
| * ... |
| * XlibWrapper.XDoStuff(); |
| * } finally { |
| * SunToolkit.awtUnlock(); |
| * } |
| * } |
| */ |
| |
| private static final ReentrantLock AWT_LOCK = new ReentrantLock(); |
| private static final Condition AWT_LOCK_COND = AWT_LOCK.newCondition(); |
| |
| public static final void awtLock() { |
| AWT_LOCK.lock(); |
| } |
| |
| public static final boolean awtTryLock() { |
| return AWT_LOCK.tryLock(); |
| } |
| |
| public static final void awtUnlock() { |
| AWT_LOCK.unlock(); |
| } |
| |
| public static final void awtLockWait() |
| throws InterruptedException |
| { |
| AWT_LOCK_COND.await(); |
| } |
| |
| public static final void awtLockWait(long timeout) |
| throws InterruptedException |
| { |
| AWT_LOCK_COND.await(timeout, TimeUnit.MILLISECONDS); |
| } |
| |
| public static final void awtLockNotify() { |
| AWT_LOCK_COND.signal(); |
| } |
| |
| public static final void awtLockNotifyAll() { |
| AWT_LOCK_COND.signalAll(); |
| } |
| |
| public static final boolean isAWTLockHeldByCurrentThread() { |
| return AWT_LOCK.isHeldByCurrentThread(); |
| } |
| |
| /* |
| * Create a new AppContext, along with its EventQueue, for a |
| * new ThreadGroup. Browser code, for example, would use this |
| * method to create an AppContext & EventQueue for an Applet. |
| */ |
| public static AppContext createNewAppContext() { |
| ThreadGroup threadGroup = Thread.currentThread().getThreadGroup(); |
| return createNewAppContext(threadGroup); |
| } |
| |
| static final AppContext createNewAppContext(ThreadGroup threadGroup) { |
| // Create appContext before initialization of EventQueue, so all |
| // the calls to AppContext.getAppContext() from EventQueue ctor |
| // return correct values |
| AppContext appContext = new AppContext(threadGroup); |
| initEQ(appContext); |
| |
| return appContext; |
| } |
| |
| static void wakeupEventQueue(EventQueue q, boolean isShutdown){ |
| AWTAccessor.getEventQueueAccessor().wakeup(q, isShutdown); |
| } |
| |
| /* |
| * Fetch the peer associated with the given target (as specified |
| * in the peer creation method). This can be used to determine |
| * things like what the parent peer is. If the target is null |
| * or the target can't be found (either because the a peer was |
| * never created for it or the peer was disposed), a null will |
| * be returned. |
| */ |
| protected static Object targetToPeer(Object target) { |
| if (target != null && !GraphicsEnvironment.isHeadless()) { |
| return AWTAutoShutdown.getInstance().getPeer(target); |
| } |
| return null; |
| } |
| |
| protected static void targetCreatedPeer(Object target, Object peer) { |
| if (target != null && peer != null && |
| !GraphicsEnvironment.isHeadless()) |
| { |
| AWTAutoShutdown.getInstance().registerPeer(target, peer); |
| } |
| } |
| |
| protected static void targetDisposedPeer(Object target, Object peer) { |
| if (target != null && peer != null && |
| !GraphicsEnvironment.isHeadless()) |
| { |
| AWTAutoShutdown.getInstance().unregisterPeer(target, peer); |
| } |
| } |
| |
| // Maps from non-Component/MenuComponent to AppContext. |
| // WeakHashMap<Component,AppContext> |
| private static final Map<Object, AppContext> appContextMap = |
| Collections.synchronizedMap(new WeakIdentityHashMap<Object, AppContext>()); |
| |
| /** |
| * Sets the appContext field of target. If target is not a Component or |
| * MenuComponent, this returns false. |
| */ |
| private static boolean setAppContext(Object target, |
| AppContext context) { |
| if (target instanceof Component) { |
| AWTAccessor.getComponentAccessor(). |
| setAppContext((Component)target, context); |
| } else if (target instanceof MenuComponent) { |
| AWTAccessor.getMenuComponentAccessor(). |
| setAppContext((MenuComponent)target, context); |
| } else { |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Returns the appContext field for target. If target is not a |
| * Component or MenuComponent this returns null. |
| */ |
| private static AppContext getAppContext(Object target) { |
| if (target instanceof Component) { |
| return AWTAccessor.getComponentAccessor(). |
| getAppContext((Component)target); |
| } else if (target instanceof MenuComponent) { |
| return AWTAccessor.getMenuComponentAccessor(). |
| getAppContext((MenuComponent)target); |
| } else { |
| return null; |
| } |
| } |
| |
| /* |
| * Fetch the AppContext associated with the given target. |
| * This can be used to determine things like which EventQueue |
| * to use for posting events to a Component. If the target is |
| * null or the target can't be found, a null with be returned. |
| */ |
| public static AppContext targetToAppContext(Object target) { |
| if (target == null) { |
| return null; |
| } |
| AppContext context = getAppContext(target); |
| if (context == null) { |
| // target is not a Component/MenuComponent, try the |
| // appContextMap. |
| context = appContextMap.get(target); |
| } |
| return context; |
| } |
| |
| /** |
| * Sets the synchronous status of focus requests on lightweight |
| * components in the specified window to the specified value. |
| * If the boolean parameter is {@code true} then the focus |
| * requests on lightweight components will be performed |
| * synchronously, if it is {@code false}, then asynchronously. |
| * By default, all windows have their lightweight request status |
| * set to asynchronous. |
| * <p> |
| * The application can only set the status of lightweight focus |
| * requests to synchronous for any of its windows if it doesn't |
| * perform focus transfers between different heavyweight containers. |
| * In this case the observable focus behaviour is the same as with |
| * asynchronous status. |
| * <p> |
| * If the application performs focus transfer between different |
| * heavyweight containers and sets the lightweight focus request |
| * status to synchronous for any of its windows, then further focus |
| * behaviour is unspecified. |
| * <p> |
| * @param changed the window for which the lightweight focus request |
| * status should be set |
| * @param status the value of lightweight focus request status |
| */ |
| |
| public static void setLWRequestStatus(Window changed,boolean status){ |
| AWTAccessor.getWindowAccessor().setLWRequestStatus(changed, status); |
| }; |
| |
| public static void checkAndSetPolicy(Container cont) { |
| FocusTraversalPolicy defaultPolicy = KeyboardFocusManager. |
| getCurrentKeyboardFocusManager(). |
| getDefaultFocusTraversalPolicy(); |
| |
| cont.setFocusTraversalPolicy(defaultPolicy); |
| } |
| |
| /* |
| * Insert a mapping from target to AppContext, for later retrieval |
| * via targetToAppContext() above. |
| */ |
| public static void insertTargetMapping(Object target, AppContext appContext) { |
| if (!setAppContext(target, appContext)) { |
| // Target is not a Component/MenuComponent, use the private Map |
| // instead. |
| appContextMap.put(target, appContext); |
| } |
| } |
| |
| /* |
| * Post an AWTEvent to the Java EventQueue, using the PostEventQueue |
| * to avoid possibly calling client code (EventQueueSubclass.postEvent()) |
| * on the toolkit (AWT-Windows/AWT-Motif) thread. This function should |
| * not be called under another lock since it locks the EventQueue. |
| * See bugids 4632918, 4526597. |
| */ |
| public static void postEvent(AppContext appContext, AWTEvent event) { |
| if (event == null) { |
| throw new NullPointerException(); |
| } |
| |
| AWTAccessor.SequencedEventAccessor sea = AWTAccessor.getSequencedEventAccessor(); |
| if (sea != null && sea.isSequencedEvent(event)) { |
| AWTEvent nested = sea.getNested(event); |
| if (nested.getID() == WindowEvent.WINDOW_LOST_FOCUS && |
| nested instanceof TimedWindowEvent) |
| { |
| TimedWindowEvent twe = (TimedWindowEvent)nested; |
| ((SunToolkit)Toolkit.getDefaultToolkit()). |
| setWindowDeactivationTime((Window)twe.getSource(), twe.getWhen()); |
| } |
| } |
| |
| // All events posted via this method are system-generated. |
| // Placing the following call here reduces considerably the |
| // number of places throughout the toolkit that would |
| // otherwise have to be modified to precisely identify |
| // system-generated events. |
| setSystemGenerated(event); |
| AppContext eventContext = targetToAppContext(event.getSource()); |
| if (eventContext != null && !eventContext.equals(appContext)) { |
| throw new RuntimeException("Event posted on wrong app context : " + event); |
| } |
| PostEventQueue postEventQueue = |
| (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); |
| if (postEventQueue != null) { |
| postEventQueue.postEvent(event); |
| } |
| } |
| |
| /* |
| * Post AWTEvent of high priority. |
| */ |
| public static void postPriorityEvent(final AWTEvent e) { |
| PeerEvent pe = new PeerEvent(Toolkit.getDefaultToolkit(), new Runnable() { |
| @Override |
| public void run() { |
| AWTAccessor.getAWTEventAccessor().setPosted(e); |
| ((Component)e.getSource()).dispatchEvent(e); |
| } |
| }, PeerEvent.ULTIMATE_PRIORITY_EVENT); |
| postEvent(targetToAppContext(e.getSource()), pe); |
| } |
| |
| /* |
| * Flush any pending events which haven't been posted to the AWT |
| * EventQueue yet. |
| */ |
| public static void flushPendingEvents() { |
| AppContext appContext = AppContext.getAppContext(); |
| flushPendingEvents(appContext); |
| } |
| |
| /* |
| * Flush the PostEventQueue for the right AppContext. |
| * The default flushPendingEvents only flushes the thread-local context, |
| * which is not always correct, c.f. 3746956 |
| */ |
| public static void flushPendingEvents(AppContext appContext) { |
| PostEventQueue postEventQueue = |
| (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); |
| if (postEventQueue != null) { |
| postEventQueue.flush(); |
| } |
| } |
| |
| /* |
| * Execute a chunk of code on the Java event handler thread for the |
| * given target. Does not wait for the execution to occur before |
| * returning to the caller. |
| */ |
| public static void executeOnEventHandlerThread(Object target, |
| Runnable runnable) { |
| executeOnEventHandlerThread(new PeerEvent(target, runnable, PeerEvent.PRIORITY_EVENT)); |
| } |
| |
| /* |
| * Fixed 5064013: the InvocationEvent time should be equals |
| * the time of the ActionEvent |
| */ |
| @SuppressWarnings("serial") |
| public static void executeOnEventHandlerThread(Object target, |
| Runnable runnable, |
| final long when) { |
| executeOnEventHandlerThread( |
| new PeerEvent(target, runnable, PeerEvent.PRIORITY_EVENT) { |
| @Override |
| public long getWhen() { |
| return when; |
| } |
| }); |
| } |
| |
| /* |
| * Execute a chunk of code on the Java event handler thread for the |
| * given target. Does not wait for the execution to occur before |
| * returning to the caller. |
| */ |
| public static void executeOnEventHandlerThread(PeerEvent peerEvent) { |
| postEvent(targetToAppContext(peerEvent.getSource()), peerEvent); |
| } |
| |
| /* |
| * Execute a chunk of code on the Java event handler thread. The |
| * method takes into account provided AppContext and sets |
| * {@code SunToolkit.getDefaultToolkit()} as a target of the |
| * event. See 6451487 for detailes. |
| * Does not wait for the execution to occur before returning to |
| * the caller. |
| */ |
| public static void invokeLaterOnAppContext( |
| AppContext appContext, Runnable dispatcher) |
| { |
| postEvent(appContext, |
| new PeerEvent(Toolkit.getDefaultToolkit(), dispatcher, |
| PeerEvent.PRIORITY_EVENT)); |
| } |
| |
| /* |
| * Execute a chunk of code on the Java event handler thread for the |
| * given target. Waits for the execution to occur before returning |
| * to the caller. |
| */ |
| public static void executeOnEDTAndWait(Object target, Runnable runnable) |
| throws InterruptedException, InvocationTargetException |
| { |
| if (EventQueue.isDispatchThread()) { |
| throw new Error("Cannot call executeOnEDTAndWait from any event dispatcher thread"); |
| } |
| |
| class AWTInvocationLock {} |
| Object lock = new AWTInvocationLock(); |
| |
| PeerEvent event = new PeerEvent(target, runnable, lock, true, PeerEvent.PRIORITY_EVENT); |
| |
| synchronized (lock) { |
| executeOnEventHandlerThread(event); |
| while(!event.isDispatched()) { |
| lock.wait(); |
| } |
| } |
| |
| Throwable eventThrowable = event.getThrowable(); |
| if (eventThrowable != null) { |
| throw new InvocationTargetException(eventThrowable); |
| } |
| } |
| |
| /* |
| * Returns true if the calling thread is the event dispatch thread |
| * contained within AppContext which associated with the given target. |
| * Use this call to ensure that a given task is being executed |
| * (or not being) on the event dispatch thread for the given target. |
| */ |
| public static boolean isDispatchThreadForAppContext(Object target) { |
| AppContext appContext = targetToAppContext(target); |
| EventQueue eq = (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY); |
| |
| AWTAccessor.EventQueueAccessor accessor = AWTAccessor.getEventQueueAccessor(); |
| return accessor.isDispatchThreadImpl(eq); |
| } |
| |
| @Override |
| public Dimension getScreenSize() { |
| return GraphicsEnvironment.getLocalGraphicsEnvironment() |
| .getDefaultScreenDevice().getDefaultConfiguration() |
| .getBounds().getSize(); |
| } |
| |
| @Override |
| public ColorModel getColorModel() throws HeadlessException { |
| return GraphicsEnvironment.getLocalGraphicsEnvironment() |
| .getDefaultScreenDevice().getDefaultConfiguration() |
| .getColorModel(); |
| } |
| |
| @Override |
| @SuppressWarnings("deprecation") |
| public FontMetrics getFontMetrics(Font font) { |
| return FontDesignMetrics.getMetrics(font); |
| } |
| |
| @Override |
| @SuppressWarnings("deprecation") |
| public String[] getFontList() { |
| String[] hardwiredFontList = { |
| Font.DIALOG, Font.SANS_SERIF, Font.SERIF, Font.MONOSPACED, |
| Font.DIALOG_INPUT |
| |
| // -- Obsolete font names from 1.0.2. It was decided that |
| // -- getFontList should not return these old names: |
| // "Helvetica", "TimesRoman", "Courier", "ZapfDingbats" |
| }; |
| return hardwiredFontList; |
| } |
| |
| /** |
| * Disables erasing of background on the canvas before painting if |
| * this is supported by the current toolkit. It is recommended to |
| * call this method early, before the Canvas becomes displayable, |
| * because some Toolkit implementations do not support changing |
| * this property once the Canvas becomes displayable. |
| */ |
| public void disableBackgroundErase(Canvas canvas) { |
| disableBackgroundEraseImpl(canvas); |
| } |
| |
| /** |
| * Disables the native erasing of the background on the given |
| * component before painting if this is supported by the current |
| * toolkit. This only has an effect for certain components such as |
| * Canvas, Panel and Window. It is recommended to call this method |
| * early, before the Component becomes displayable, because some |
| * Toolkit implementations do not support changing this property |
| * once the Component becomes displayable. |
| */ |
| public void disableBackgroundErase(Component component) { |
| disableBackgroundEraseImpl(component); |
| } |
| |
| private void disableBackgroundEraseImpl(Component component) { |
| AWTAccessor.getComponentAccessor().setBackgroundEraseDisabled(component, true); |
| } |
| |
| /** |
| * Returns the value of "sun.awt.noerasebackground" property. Default |
| * value is {@code false}. |
| */ |
| public static boolean getSunAwtNoerasebackground() { |
| return AccessController.doPrivileged(new GetBooleanAction("sun.awt.noerasebackground")); |
| } |
| |
| /** |
| * Returns the value of "sun.awt.erasebackgroundonresize" property. Default |
| * value is {@code false}. |
| */ |
| public static boolean getSunAwtErasebackgroundonresize() { |
| return AccessController.doPrivileged(new GetBooleanAction("sun.awt.erasebackgroundonresize")); |
| } |
| |
| |
| @SuppressWarnings("deprecation") |
| static final SoftCache fileImgCache = new SoftCache(); |
| |
| @SuppressWarnings("deprecation") |
| static final SoftCache urlImgCache = new SoftCache(); |
| |
| static Image getImageFromHash(Toolkit tk, URL url) { |
| checkPermissions(url); |
| synchronized (urlImgCache) { |
| String key = url.toString(); |
| Image img = (Image)urlImgCache.get(key); |
| if (img == null) { |
| try { |
| img = tk.createImage(new URLImageSource(url)); |
| urlImgCache.put(key, img); |
| } catch (Exception e) { |
| } |
| } |
| return img; |
| } |
| } |
| |
| static Image getImageFromHash(Toolkit tk, |
| String filename) { |
| checkPermissions(filename); |
| synchronized (fileImgCache) { |
| Image img = (Image)fileImgCache.get(filename); |
| if (img == null) { |
| try { |
| img = tk.createImage(new FileImageSource(filename)); |
| fileImgCache.put(filename, img); |
| } catch (Exception e) { |
| } |
| } |
| return img; |
| } |
| } |
| |
| @Override |
| public Image getImage(String filename) { |
| return getImageFromHash(this, filename); |
| } |
| |
| @Override |
| public Image getImage(URL url) { |
| return getImageFromHash(this, url); |
| } |
| |
| protected Image getImageWithResolutionVariant(String fileName, |
| String resolutionVariantName) { |
| synchronized (fileImgCache) { |
| Image image = getImageFromHash(this, fileName); |
| if (image instanceof MultiResolutionImage) { |
| return image; |
| } |
| Image resolutionVariant = getImageFromHash(this, resolutionVariantName); |
| image = createImageWithResolutionVariant(image, resolutionVariant); |
| fileImgCache.put(fileName, image); |
| return image; |
| } |
| } |
| |
| protected Image getImageWithResolutionVariant(URL url, |
| URL resolutionVariantURL) { |
| synchronized (urlImgCache) { |
| Image image = getImageFromHash(this, url); |
| if (image instanceof MultiResolutionImage) { |
| return image; |
| } |
| Image resolutionVariant = getImageFromHash(this, resolutionVariantURL); |
| image = createImageWithResolutionVariant(image, resolutionVariant); |
| String key = url.toString(); |
| urlImgCache.put(key, image); |
| return image; |
| } |
| } |
| |
| |
| @Override |
| public Image createImage(String filename) { |
| checkPermissions(filename); |
| return createImage(new FileImageSource(filename)); |
| } |
| |
| @Override |
| public Image createImage(URL url) { |
| checkPermissions(url); |
| return createImage(new URLImageSource(url)); |
| } |
| |
| @Override |
| public Image createImage(byte[] data, int offset, int length) { |
| return createImage(new ByteArrayImageSource(data, offset, length)); |
| } |
| |
| @Override |
| public Image createImage(ImageProducer producer) { |
| return new ToolkitImage(producer); |
| } |
| |
| public static Image createImageWithResolutionVariant(Image image, |
| Image resolutionVariant) { |
| return new MultiResolutionToolkitImage(image, resolutionVariant); |
| } |
| |
| @Override |
| public int checkImage(Image img, int w, int h, ImageObserver o) { |
| if (!(img instanceof ToolkitImage)) { |
| return ImageObserver.ALLBITS; |
| } |
| |
| ToolkitImage tkimg = (ToolkitImage)img; |
| int repbits; |
| if (w == 0 || h == 0) { |
| repbits = ImageObserver.ALLBITS; |
| } else { |
| repbits = tkimg.getImageRep().check(o); |
| } |
| return (tkimg.check(o) | repbits) & checkResolutionVariant(img, w, h, o); |
| } |
| |
| @Override |
| public boolean prepareImage(Image img, int w, int h, ImageObserver o) { |
| if (w == 0 || h == 0) { |
| return true; |
| } |
| |
| // Must be a ToolkitImage |
| if (!(img instanceof ToolkitImage)) { |
| return true; |
| } |
| |
| ToolkitImage tkimg = (ToolkitImage)img; |
| if (tkimg.hasError()) { |
| if (o != null) { |
| o.imageUpdate(img, ImageObserver.ERROR|ImageObserver.ABORT, |
| -1, -1, -1, -1); |
| } |
| return false; |
| } |
| ImageRepresentation ir = tkimg.getImageRep(); |
| return ir.prepare(o) & prepareResolutionVariant(img, w, h, o); |
| } |
| |
| private int checkResolutionVariant(Image img, int w, int h, ImageObserver o) { |
| ToolkitImage rvImage = getResolutionVariant(img); |
| int rvw = getRVSize(w); |
| int rvh = getRVSize(h); |
| // Ignore the resolution variant in case of error |
| return (rvImage == null || rvImage.hasError()) ? 0xFFFF : |
| checkImage(rvImage, rvw, rvh, MultiResolutionToolkitImage. |
| getResolutionVariantObserver( |
| img, o, w, h, rvw, rvh, true)); |
| } |
| |
| private boolean prepareResolutionVariant(Image img, int w, int h, |
| ImageObserver o) { |
| |
| ToolkitImage rvImage = getResolutionVariant(img); |
| int rvw = getRVSize(w); |
| int rvh = getRVSize(h); |
| // Ignore the resolution variant in case of error |
| return rvImage == null || rvImage.hasError() || prepareImage( |
| rvImage, rvw, rvh, |
| MultiResolutionToolkitImage.getResolutionVariantObserver( |
| img, o, w, h, rvw, rvh, true)); |
| } |
| |
| private static int getRVSize(int size){ |
| return size == -1 ? -1 : 2 * size; |
| } |
| |
| private static ToolkitImage getResolutionVariant(Image image) { |
| if (image instanceof MultiResolutionToolkitImage) { |
| Image resolutionVariant = ((MultiResolutionToolkitImage) image). |
| getResolutionVariant(); |
| if (resolutionVariant instanceof ToolkitImage) { |
| return (ToolkitImage) resolutionVariant; |
| } |
| } |
| return null; |
| } |
| |
| protected static boolean imageCached(String fileName) { |
| return fileImgCache.containsKey(fileName); |
| } |
| |
| protected static boolean imageCached(URL url) { |
| String key = url.toString(); |
| return urlImgCache.containsKey(key); |
| } |
| |
| protected static boolean imageExists(String filename) { |
| if (filename != null) { |
| checkPermissions(filename); |
| return new File(filename).exists(); |
| } |
| return false; |
| } |
| |
| @SuppressWarnings("try") |
| protected static boolean imageExists(URL url) { |
| if (url != null) { |
| checkPermissions(url); |
| try (InputStream is = url.openStream()) { |
| return true; |
| }catch(IOException e){ |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| private static void checkPermissions(String filename) { |
| SecurityManager security = System.getSecurityManager(); |
| if (security != null) { |
| security.checkRead(filename); |
| } |
| } |
| |
| private static void checkPermissions(URL url) { |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) { |
| try { |
| java.security.Permission perm = |
| URLUtil.getConnectPermission(url); |
| if (perm != null) { |
| try { |
| sm.checkPermission(perm); |
| } catch (SecurityException se) { |
| // fallback to checkRead/checkConnect for pre 1.2 |
| // security managers |
| if ((perm instanceof java.io.FilePermission) && |
| perm.getActions().indexOf("read") != -1) { |
| sm.checkRead(perm.getName()); |
| } else if ((perm instanceof |
| java.net.SocketPermission) && |
| perm.getActions().indexOf("connect") != -1) { |
| sm.checkConnect(url.getHost(), url.getPort()); |
| } else { |
| throw se; |
| } |
| } |
| } |
| } catch (java.io.IOException ioe) { |
| sm.checkConnect(url.getHost(), url.getPort()); |
| } |
| } |
| } |
| |
| /** |
| * Scans {@code imageList} for best-looking image of specified dimensions. |
| * Image can be scaled and/or padded with transparency. |
| */ |
| public static BufferedImage getScaledIconImage(java.util.List<Image> imageList, int width, int height) { |
| if (width == 0 || height == 0) { |
| return null; |
| } |
| java.util.List<Image> multiResAndnormalImages = new ArrayList<>(imageList.size()); |
| for (Image image : imageList) { |
| if ((image instanceof MultiResolutionImage)) { |
| Image im = ((MultiResolutionImage) image).getResolutionVariant(width, height); |
| multiResAndnormalImages.add(im); |
| } else { |
| multiResAndnormalImages.add(image); |
| } |
| } |
| Image bestImage = null; |
| int bestWidth = 0; |
| int bestHeight = 0; |
| double bestSimilarity = 3; //Impossibly high value |
| double bestScaleFactor = 0; |
| for (Iterator<Image> i = multiResAndnormalImages.iterator();i.hasNext();) { |
| //Iterate imageList looking for best matching image. |
| //'Similarity' measure is defined as good scale factor and small insets. |
| //best possible similarity is 0 (no scale, no insets). |
| //It's found while the experiments that good-looking result is achieved |
| //with scale factors x1, x3/4, x2/3, xN, x1/N. |
| Image im = i.next(); |
| if (im == null) { |
| continue; |
| } |
| if (im instanceof ToolkitImage) { |
| ImageRepresentation ir = ((ToolkitImage)im).getImageRep(); |
| ir.reconstruct(ImageObserver.ALLBITS); |
| } |
| int iw; |
| int ih; |
| try { |
| iw = im.getWidth(null); |
| ih = im.getHeight(null); |
| } catch (Exception e){ |
| continue; |
| } |
| if (iw > 0 && ih > 0) { |
| //Calc scale factor |
| double scaleFactor = Math.min((double)width / (double)iw, |
| (double)height / (double)ih); |
| //Calculate scaled image dimensions |
| //adjusting scale factor to nearest "good" value |
| int adjw = 0; |
| int adjh = 0; |
| double scaleMeasure = 1; //0 - best (no) scale, 1 - impossibly bad |
| if (scaleFactor >= 2) { |
| //Need to enlarge image more than twice |
| //Round down scale factor to multiply by integer value |
| scaleFactor = Math.floor(scaleFactor); |
| adjw = iw * (int)scaleFactor; |
| adjh = ih * (int)scaleFactor; |
| scaleMeasure = 1.0 - 0.5 / scaleFactor; |
| } else if (scaleFactor >= 1) { |
| //Don't scale |
| scaleFactor = 1.0; |
| adjw = iw; |
| adjh = ih; |
| scaleMeasure = 0; |
| } else if (scaleFactor >= 0.75) { |
| //Multiply by 3/4 |
| scaleFactor = 0.75; |
| adjw = iw * 3 / 4; |
| adjh = ih * 3 / 4; |
| scaleMeasure = 0.3; |
| } else if (scaleFactor >= 0.6666) { |
| //Multiply by 2/3 |
| scaleFactor = 0.6666; |
| adjw = iw * 2 / 3; |
| adjh = ih * 2 / 3; |
| scaleMeasure = 0.33; |
| } else { |
| //Multiply size by 1/scaleDivider |
| //where scaleDivider is minimum possible integer |
| //larger than 1/scaleFactor |
| double scaleDivider = Math.ceil(1.0 / scaleFactor); |
| scaleFactor = 1.0 / scaleDivider; |
| adjw = (int)Math.round((double)iw / scaleDivider); |
| adjh = (int)Math.round((double)ih / scaleDivider); |
| scaleMeasure = 1.0 - 1.0 / scaleDivider; |
| } |
| double similarity = ((double)width - (double)adjw) / (double)width + |
| ((double)height - (double)adjh) / (double)height + //Large padding is bad |
| scaleMeasure; //Large rescale is bad |
| if (similarity < bestSimilarity) { |
| bestSimilarity = similarity; |
| bestScaleFactor = scaleFactor; |
| bestImage = im; |
| bestWidth = adjw; |
| bestHeight = adjh; |
| } |
| if (similarity == 0) break; |
| } |
| } |
| if (bestImage == null) { |
| //No images were found, possibly all are broken |
| return null; |
| } |
| BufferedImage bimage = |
| new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
| Graphics2D g = bimage.createGraphics(); |
| g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, |
| RenderingHints.VALUE_INTERPOLATION_BILINEAR); |
| try { |
| int x = (width - bestWidth) / 2; |
| int y = (height - bestHeight) / 2; |
| g.drawImage(bestImage, x, y, bestWidth, bestHeight, null); |
| } finally { |
| g.dispose(); |
| } |
| return bimage; |
| } |
| |
| public static DataBufferInt getScaledIconData(java.util.List<Image> imageList, int width, int height) { |
| BufferedImage bimage = getScaledIconImage(imageList, width, height); |
| if (bimage == null) { |
| return null; |
| } |
| Raster raster = bimage.getRaster(); |
| DataBuffer buffer = raster.getDataBuffer(); |
| return (DataBufferInt)buffer; |
| } |
| |
| @Override |
| protected EventQueue getSystemEventQueueImpl() { |
| return getSystemEventQueueImplPP(); |
| } |
| |
| // Package private implementation |
| static EventQueue getSystemEventQueueImplPP() { |
| return getSystemEventQueueImplPP(AppContext.getAppContext()); |
| } |
| |
| public static EventQueue getSystemEventQueueImplPP(AppContext appContext) { |
| EventQueue theEventQueue = |
| (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY); |
| return theEventQueue; |
| } |
| |
| /** |
| * Give native peers the ability to query the native container |
| * given a native component (eg the direct parent may be lightweight). |
| */ |
| public static Container getNativeContainer(Component c) { |
| return Toolkit.getNativeContainer(c); |
| } |
| |
| /** |
| * Gives native peers the ability to query the closest HW component. |
| * If the given component is heavyweight, then it returns this. Otherwise, |
| * it goes one level up in the hierarchy and tests next component. |
| */ |
| public static Component getHeavyweightComponent(Component c) { |
| while (c != null && AWTAccessor.getComponentAccessor().isLightweight(c)) { |
| c = AWTAccessor.getComponentAccessor().getParent(c); |
| } |
| return c; |
| } |
| |
| /** |
| * Returns key modifiers used by Swing to set up a focus accelerator key stroke. |
| */ |
| @SuppressWarnings("deprecation") |
| public int getFocusAcceleratorKeyMask() { |
| return InputEvent.ALT_MASK; |
| } |
| |
| /** |
| * Tests whether specified key modifiers mask can be used to enter a printable |
| * character. This is a default implementation of this method, which reflects |
| * the way things work on Windows: here, pressing ctrl + alt allows user to enter |
| * characters from the extended character set (like euro sign or math symbols) |
| */ |
| @SuppressWarnings("deprecation") |
| public boolean isPrintableCharacterModifiersMask(int mods) { |
| return ((mods & InputEvent.ALT_MASK) == (mods & InputEvent.CTRL_MASK)); |
| } |
| |
| /** |
| * Returns whether popup is allowed to be shown above the task bar. |
| * This is a default implementation of this method, which checks |
| * corresponding security permission. |
| */ |
| public boolean canPopupOverlapTaskBar() { |
| boolean result = true; |
| try { |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) { |
| sm.checkPermission(AWTPermissions.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION); |
| } |
| } catch (SecurityException se) { |
| // There is no permission to show popups over the task bar |
| result = false; |
| } |
| return result; |
| } |
| |
| /** |
| * Returns a new input method window, with behavior as specified in |
| * {@link java.awt.im.spi.InputMethodContext#createInputMethodWindow}. |
| * If the inputContext is not null, the window should return it from its |
| * getInputContext() method. The window needs to implement |
| * sun.awt.im.InputMethodWindow. |
| * <p> |
| * SunToolkit subclasses can override this method to return better input |
| * method windows. |
| */ |
| @Override |
| public Window createInputMethodWindow(String title, InputContext context) { |
| return new sun.awt.im.SimpleInputMethodWindow(title, context); |
| } |
| |
| /** |
| * Returns whether enableInputMethods should be set to true for peered |
| * TextComponent instances on this platform. False by default. |
| */ |
| @Override |
| public boolean enableInputMethodsForTextComponent() { |
| return false; |
| } |
| |
| private static Locale startupLocale = null; |
| |
| /** |
| * Returns the locale in which the runtime was started. |
| */ |
| public static Locale getStartupLocale() { |
| if (startupLocale == null) { |
| String language, region, country, variant; |
| language = AccessController.doPrivileged( |
| new GetPropertyAction("user.language", "en")); |
| // for compatibility, check for old user.region property |
| region = AccessController.doPrivileged( |
| new GetPropertyAction("user.region")); |
| if (region != null) { |
| // region can be of form country, country_variant, or _variant |
| int i = region.indexOf('_'); |
| if (i >= 0) { |
| country = region.substring(0, i); |
| variant = region.substring(i + 1); |
| } else { |
| country = region; |
| variant = ""; |
| } |
| } else { |
| country = AccessController.doPrivileged( |
| new GetPropertyAction("user.country", "")); |
| variant = AccessController.doPrivileged( |
| new GetPropertyAction("user.variant", "")); |
| } |
| startupLocale = new Locale(language, country, variant); |
| } |
| return startupLocale; |
| } |
| |
| /** |
| * Returns the default keyboard locale of the underlying operating system |
| */ |
| @Override |
| public Locale getDefaultKeyboardLocale() { |
| return getStartupLocale(); |
| } |
| |
| /** |
| * Returns whether default toolkit needs the support of the xembed |
| * from embedding host(if any). |
| * @return {@code true}, if XEmbed is needed, {@code false} otherwise |
| */ |
| public static boolean needsXEmbed() { |
| String noxembed = AccessController. |
| doPrivileged(new GetPropertyAction("sun.awt.noxembed", "false")); |
| if ("true".equals(noxembed)) { |
| return false; |
| } |
| |
| Toolkit tk = Toolkit.getDefaultToolkit(); |
| if (tk instanceof SunToolkit) { |
| // SunToolkit descendants should override this method to specify |
| // concrete behavior |
| return ((SunToolkit)tk).needsXEmbedImpl(); |
| } else { |
| // Non-SunToolkit doubtly might support XEmbed |
| return false; |
| } |
| } |
| |
| /** |
| * Returns whether this toolkit needs the support of the xembed |
| * from embedding host(if any). |
| * @return {@code true}, if XEmbed is needed, {@code false} otherwise |
| */ |
| protected boolean needsXEmbedImpl() { |
| return false; |
| } |
| |
| private static Dialog.ModalExclusionType DEFAULT_MODAL_EXCLUSION_TYPE = null; |
| |
| /** |
| * Returns whether the XEmbed server feature is requested by |
| * developer. If true, Toolkit should return an |
| * XEmbed-server-enabled CanvasPeer instead of the ordinary CanvasPeer. |
| */ |
| protected final boolean isXEmbedServerRequested() { |
| return AccessController.doPrivileged(new GetBooleanAction("sun.awt.xembedserver")); |
| } |
| |
| /** |
| * Returns whether the modal exclusion API is supported by the current toolkit. |
| * When it isn't supported, calling {@code setModalExcluded} has no |
| * effect, and {@code isModalExcluded} returns false for all windows. |
| * |
| * @return true if modal exclusion is supported by the toolkit, false otherwise |
| * |
| * @see sun.awt.SunToolkit#setModalExcluded(java.awt.Window) |
| * @see sun.awt.SunToolkit#isModalExcluded(java.awt.Window) |
| * |
| * @since 1.5 |
| */ |
| public static boolean isModalExcludedSupported() |
| { |
| Toolkit tk = Toolkit.getDefaultToolkit(); |
| return tk.isModalExclusionTypeSupported(DEFAULT_MODAL_EXCLUSION_TYPE); |
| } |
| /* |
| * Default implementation for isModalExcludedSupportedImpl(), returns false. |
| * |
| * @see sun.awt.windows.WToolkit#isModalExcludeSupportedImpl |
| * @see sun.awt.X11.XToolkit#isModalExcludeSupportedImpl |
| * |
| * @since 1.5 |
| */ |
| protected boolean isModalExcludedSupportedImpl() |
| { |
| return false; |
| } |
| |
| /* |
| * Sets this window to be excluded from being modally blocked. When the |
| * toolkit supports modal exclusion and this method is called, input |
| * events, focus transfer and z-order will continue to work for the |
| * window, it's owned windows and child components, even in the |
| * presence of a modal dialog. |
| * For details on which {@code Window}s are normally blocked |
| * by modal dialog, see {@link java.awt.Dialog}. |
| * Invoking this method when the modal exclusion API is not supported by |
| * the current toolkit has no effect. |
| * @param window Window to be marked as not modally blocked |
| * @see java.awt.Dialog |
| * @see java.awt.Dialog#setModal(boolean) |
| * @see sun.awt.SunToolkit#isModalExcludedSupported |
| * @see sun.awt.SunToolkit#isModalExcluded(java.awt.Window) |
| */ |
| public static void setModalExcluded(Window window) |
| { |
| if (DEFAULT_MODAL_EXCLUSION_TYPE == null) { |
| DEFAULT_MODAL_EXCLUSION_TYPE = Dialog.ModalExclusionType.APPLICATION_EXCLUDE; |
| } |
| window.setModalExclusionType(DEFAULT_MODAL_EXCLUSION_TYPE); |
| } |
| |
| /* |
| * Returns whether the specified window is blocked by modal dialogs. |
| * If the modal exclusion API isn't supported by the current toolkit, |
| * it returns false for all windows. |
| * |
| * @param window Window to test for modal exclusion |
| * |
| * @return true if the window is modal excluded, false otherwise. If |
| * the modal exclusion isn't supported by the current Toolkit, false |
| * is returned |
| * |
| * @see sun.awt.SunToolkit#isModalExcludedSupported |
| * @see sun.awt.SunToolkit#setModalExcluded(java.awt.Window) |
| * |
| * @since 1.5 |
| */ |
| public static boolean isModalExcluded(Window window) |
| { |
| if (DEFAULT_MODAL_EXCLUSION_TYPE == null) { |
| DEFAULT_MODAL_EXCLUSION_TYPE = Dialog.ModalExclusionType.APPLICATION_EXCLUDE; |
| } |
| return window.getModalExclusionType().compareTo(DEFAULT_MODAL_EXCLUSION_TYPE) >= 0; |
| } |
| |
| /** |
| * Overridden in XToolkit and WToolkit |
| */ |
| @Override |
| public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) { |
| return (modalityType == Dialog.ModalityType.MODELESS) || |
| (modalityType == Dialog.ModalityType.APPLICATION_MODAL); |
| } |
| |
| /** |
| * Overridden in XToolkit and WToolkit |
| */ |
| @Override |
| public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType) { |
| return (exclusionType == Dialog.ModalExclusionType.NO_EXCLUDE); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // |
| // The following is used by the Java Plug-in to coordinate dialog modality |
| // between containing applications (browsers, ActiveX containers etc) and |
| // the AWT. |
| // |
| /////////////////////////////////////////////////////////////////////////// |
| |
| private ModalityListenerList modalityListeners = new ModalityListenerList(); |
| |
| public void addModalityListener(ModalityListener listener) { |
| modalityListeners.add(listener); |
| } |
| |
| public void removeModalityListener(ModalityListener listener) { |
| modalityListeners.remove(listener); |
| } |
| |
| public void notifyModalityPushed(Dialog dialog) { |
| notifyModalityChange(ModalityEvent.MODALITY_PUSHED, dialog); |
| } |
| |
| public void notifyModalityPopped(Dialog dialog) { |
| notifyModalityChange(ModalityEvent.MODALITY_POPPED, dialog); |
| } |
| |
| final void notifyModalityChange(int id, Dialog source) { |
| ModalityEvent ev = new ModalityEvent(source, modalityListeners, id); |
| ev.dispatch(); |
| } |
| |
| static class ModalityListenerList implements ModalityListener { |
| |
| Vector<ModalityListener> listeners = new Vector<ModalityListener>(); |
| |
| void add(ModalityListener listener) { |
| listeners.addElement(listener); |
| } |
| |
| void remove(ModalityListener listener) { |
| listeners.removeElement(listener); |
| } |
| |
| @Override |
| public void modalityPushed(ModalityEvent ev) { |
| Iterator<ModalityListener> it = listeners.iterator(); |
| while (it.hasNext()) { |
| it.next().modalityPushed(ev); |
| } |
| } |
| |
| @Override |
| public void modalityPopped(ModalityEvent ev) { |
| Iterator<ModalityListener> it = listeners.iterator(); |
| while (it.hasNext()) { |
| it.next().modalityPopped(ev); |
| } |
| } |
| } // end of class ModalityListenerList |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // End Plug-in code |
| /////////////////////////////////////////////////////////////////////////// |
| |
| public static boolean isLightweightOrUnknown(Component comp) { |
| if (comp.isLightweight() |
| || !(getDefaultToolkit() instanceof SunToolkit)) |
| { |
| return true; |
| } |
| return !(comp instanceof Button |
| || comp instanceof Canvas |
| || comp instanceof Checkbox |
| || comp instanceof Choice |
| || comp instanceof Label |
| || comp instanceof java.awt.List |
| || comp instanceof Panel |
| || comp instanceof Scrollbar |
| || comp instanceof ScrollPane |
| || comp instanceof TextArea |
| || comp instanceof TextField |
| || comp instanceof Window); |
| } |
| |
| @SuppressWarnings("serial") |
| public static class OperationTimedOut extends RuntimeException { |
| public OperationTimedOut(String msg) { |
| super(msg); |
| } |
| public OperationTimedOut() { |
| } |
| } |
| |
| @SuppressWarnings("serial") |
| public static class InfiniteLoop extends RuntimeException { |
| } |
| |
| @SuppressWarnings("serial") |
| public static class IllegalThreadException extends RuntimeException { |
| public IllegalThreadException(String msg) { |
| super(msg); |
| } |
| public IllegalThreadException() { |
| } |
| } |
| |
| public static final int DEFAULT_WAIT_TIME = 10000; |
| private static final int MAX_ITERS = 20; |
| private static final int MIN_ITERS = 0; |
| private static final int MINIMAL_EDELAY = 0; |
| |
| /** |
| * Parameterless version of realsync which uses default timout (see DEFAUL_WAIT_TIME). |
| */ |
| public void realSync() throws OperationTimedOut, InfiniteLoop { |
| realSync(DEFAULT_WAIT_TIME); |
| } |
| |
| /** |
| * Forces toolkit to synchronize with the native windowing |
| * sub-system, flushing all pending work and waiting for all the |
| * events to be processed. This method guarantees that after |
| * return no additional Java events will be generated, unless |
| * cause by user. Obviously, the method cannot be used on the |
| * event dispatch thread (EDT). In case it nevertheless gets |
| * invoked on this thread, the method throws the |
| * IllegalThreadException runtime exception. |
| * |
| * <p> This method allows to write tests without explicit timeouts |
| * or wait for some event. Example: |
| * <pre>{@code |
| * Frame f = ...; |
| * f.setVisible(true); |
| * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); |
| * }</pre> |
| * |
| * <p> After realSync, {@code f} will be completely visible |
| * on the screen, its getLocationOnScreen will be returning the |
| * right result and it will be the focus owner. |
| * |
| * <p> Another example: |
| * <pre>{@code |
| * b.requestFocus(); |
| * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); |
| * }</pre> |
| * |
| * <p> After realSync, {@code b} will be focus owner. |
| * |
| * <p> Notice that realSync isn't guaranteed to work if recurring |
| * actions occur, such as if during processing of some event |
| * another request which may generate some events occurs. By |
| * default, sync tries to perform as much as {@value #MAX_ITERS} |
| * cycles of event processing, allowing for roughly {@value |
| * #MAX_ITERS} additional requests. |
| * |
| * <p> For example, requestFocus() generates native request, which |
| * generates one or two Java focus events, which then generate a |
| * serie of paint events, a serie of Java focus events, which then |
| * generate a serie of paint events which then are processed - |
| * three cycles, minimum. |
| * |
| * @param timeout the maximum time to wait in milliseconds, negative means "forever". |
| */ |
| public void realSync(final long timeout) throws OperationTimedOut, InfiniteLoop |
| { |
| if (EventQueue.isDispatchThread()) { |
| throw new IllegalThreadException("The SunToolkit.realSync() method cannot be used on the event dispatch thread (EDT)."); |
| } |
| int bigLoop = 0; |
| do { |
| // Let's do sync first |
| sync(); |
| |
| // During the wait process, when we were processing incoming |
| // events, we could have made some new request, which can |
| // generate new events. Example: MapNotify/XSetInputFocus. |
| // Therefore, we dispatch them as long as there is something |
| // to dispatch. |
| int iters = 0; |
| while (iters < MIN_ITERS) { |
| syncNativeQueue(timeout); |
| iters++; |
| } |
| while (syncNativeQueue(timeout) && iters < MAX_ITERS) { |
| iters++; |
| } |
| if (iters >= MAX_ITERS) { |
| throw new InfiniteLoop(); |
| } |
| |
| // native requests were dispatched by X/Window Manager or Windows |
| // Moreover, we processed them all on Toolkit thread |
| // Now wait while EDT processes them. |
| // |
| // During processing of some events (focus, for example), |
| // some other events could have been generated. So, after |
| // waitForIdle, we may end up with full EventQueue |
| iters = 0; |
| while (iters < MIN_ITERS) { |
| waitForIdle(timeout); |
| iters++; |
| } |
| while (waitForIdle(timeout) && iters < MAX_ITERS) { |
| iters++; |
| } |
| if (iters >= MAX_ITERS) { |
| throw new InfiniteLoop(); |
| } |
| |
| bigLoop++; |
| // Again, for Java events, it was simple to check for new Java |
| // events by checking event queue, but what if Java events |
| // resulted in native requests? Therefor, check native events again. |
| } while ((syncNativeQueue(timeout) || waitForIdle(timeout)) && bigLoop < MAX_ITERS); |
| } |
| |
| /** |
| * Platform toolkits need to implement this method to perform the |
| * sync of the native queue. The method should wait until native |
| * requests are processed, all native events are processed and |
| * corresponding Java events are generated. Should return |
| * {@code true} if some events were processed, |
| * {@code false} otherwise. |
| */ |
| protected abstract boolean syncNativeQueue(final long timeout); |
| |
| private boolean eventDispatched; |
| private boolean queueEmpty; |
| private final Object waitLock = new Object(); |
| |
| private boolean isEQEmpty() { |
| EventQueue queue = getSystemEventQueueImpl(); |
| return AWTAccessor.getEventQueueAccessor().noEvents(queue); |
| } |
| |
| /** |
| * Waits for the Java event queue to empty. Ensures that all |
| * events are processed (including paint events), and that if |
| * recursive events were generated, they are also processed. |
| * Should return {@code true} if more processing is |
| * necessary, {@code false} otherwise. |
| */ |
| @SuppressWarnings("serial") |
| protected final boolean waitForIdle(final long timeout) { |
| flushPendingEvents(); |
| final boolean queueWasEmpty; |
| synchronized (waitLock) { |
| queueWasEmpty = isEQEmpty(); |
| queueEmpty = false; |
| eventDispatched = false; |
| postEvent(AppContext.getAppContext(), |
| new PeerEvent(getSystemEventQueueImpl(), null, PeerEvent.LOW_PRIORITY_EVENT) { |
| @Override |
| public void dispatch() { |
| // Here we block EDT. It could have some |
| // events, it should have dispatched them by |
| // now. So native requests could have been |
| // generated. First, dispatch them. Then, |
| // flush Java events again. |
| int iters = 0; |
| while (iters < MIN_ITERS) { |
| syncNativeQueue(timeout); |
| iters++; |
| } |
| while (syncNativeQueue(timeout) && iters < MAX_ITERS) { |
| iters++; |
| } |
| flushPendingEvents(); |
| |
| synchronized(waitLock) { |
| queueEmpty = isEQEmpty(); |
| eventDispatched = true; |
| waitLock.notifyAll(); |
| } |
| } |
| }); |
| try { |
| while (!eventDispatched) { |
| waitLock.wait(); |
| } |
| } catch (InterruptedException ie) { |
| return false; |
| } |
| } |
| |
| try { |
| Thread.sleep(MINIMAL_EDELAY); |
| } catch (InterruptedException ie) { |
| throw new RuntimeException("Interrupted"); |
| } |
| |
| flushPendingEvents(); |
| |
| // Lock to force write-cache flush for queueEmpty. |
| synchronized (waitLock) { |
| return !(queueEmpty && isEQEmpty() && queueWasEmpty); |
| } |
| } |
| |
| /** |
| * Grabs the mouse input for the given window. The window must be |
| * visible. The window or its children do not receive any |
| * additional mouse events besides those targeted to them. All |
| * other events will be dispatched as before - to the respective |
| * targets. This Window will receive UngrabEvent when automatic |
| * ungrab is about to happen. The event can be listened to by |
| * installing AWTEventListener with WINDOW_EVENT_MASK. See |
| * UngrabEvent class for the list of conditions when ungrab is |
| * about to happen. |
| * @see UngrabEvent |
| */ |
| public abstract void grab(Window w); |
| |
| /** |
| * Forces ungrab. No event will be sent. |
| */ |
| public abstract void ungrab(Window w); |
| |
| |
| /** |
| * Locates the splash screen library in a platform dependent way and closes |
| * the splash screen. Should be invoked on first top-level frame display. |
| * @see java.awt.SplashScreen |
| * @since 1.6 |
| */ |
| public static native void closeSplashScreen(); |
| |
| /* The following methods and variables are to support retrieving |
| * desktop text anti-aliasing settings |
| */ |
| |
| /* Need an instance method because setDesktopProperty(..) is protected. */ |
| private void fireDesktopFontPropertyChanges() { |
| setDesktopProperty(SunToolkit.DESKTOPFONTHINTS, |
| SunToolkit.getDesktopFontHints()); |
| } |
| |
| private static boolean checkedSystemAAFontSettings; |
| private static boolean useSystemAAFontSettings; |
| private static boolean lastExtraCondition = true; |
| private static RenderingHints desktopFontHints; |
| |
| /* Since Swing is the reason for this "extra condition" logic its |
| * worth documenting it in some detail. |
| * First, a goal is for Swing and applications to both retrieve and |
| * use the same desktop property value so that there is complete |
| * consistency between the settings used by JDK's Swing implementation |
| * and 3rd party custom Swing components, custom L&Fs and any general |
| * text rendering that wants to be consistent with these. |
| * But by default on Solaris & Linux Swing will not use AA text over |
| * remote X11 display (unless Xrender can be used which is TBD and may not |
| * always be available anyway) as that is a noticeable performance hit. |
| * So there needs to be a way to express that extra condition so that |
| * it is seen by all clients of the desktop property API. |
| * If this were the only condition it could be handled here as it would |
| * be the same for any L&F and could reasonably be considered to be |
| * a static behaviour of those systems. |
| * But GTK currently has an additional test based on locale which is |
| * not applied by Metal. So mixing GTK in a few locales with Metal |
| * would mean the last one wins. |
| * This could be stored per-app context which would work |
| * for different applets, but wouldn't help for a single application |
| * using GTK and some other L&F concurrently. |
| * But it is expected this will be addressed within GTK and the font |
| * system so is a temporary and somewhat unlikely harmless corner case. |
| */ |
| public static void setAAFontSettingsCondition(boolean extraCondition) { |
| if (extraCondition != lastExtraCondition) { |
| lastExtraCondition = extraCondition; |
| if (checkedSystemAAFontSettings) { |
| /* Someone already asked for this info, under a different |
| * condition. |
| * We'll force re-evaluation instead of replicating the |
| * logic, then notify any listeners of any change. |
| */ |
| checkedSystemAAFontSettings = false; |
| Toolkit tk = Toolkit.getDefaultToolkit(); |
| if (tk instanceof SunToolkit) { |
| ((SunToolkit)tk).fireDesktopFontPropertyChanges(); |
| } |
| } |
| } |
| } |
| |
| /* "false", "off", ""default" aren't explicitly tested, they |
| * just fall through to produce a null return which all are equated to |
| * "false". |
| */ |
| private static RenderingHints getDesktopAAHintsByName(String hintname) { |
| Object aaHint = null; |
| hintname = hintname.toLowerCase(Locale.ENGLISH); |
| if (hintname.equals("on")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_ON; |
| } else if (hintname.equals("gasp")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_GASP; |
| } else if (hintname.equals("lcd") || hintname.equals("lcd_hrgb")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_HRGB; |
| } else if (hintname.equals("lcd_hbgr")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_HBGR; |
| } else if (hintname.equals("lcd_vrgb")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_VRGB; |
| } else if (hintname.equals("lcd_vbgr")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_VBGR; |
| } |
| if (aaHint != null) { |
| RenderingHints map = new RenderingHints(null); |
| map.put(KEY_TEXT_ANTIALIASING, aaHint); |
| return map; |
| } else { |
| return null; |
| } |
| } |
| |
| /* This method determines whether to use the system font settings, |
| * or ignore them if a L&F has specified they should be ignored, or |
| * to override both of these with a system property specified value. |
| * If the toolkit isn't a SunToolkit, (eg may be headless) then that |
| * system property isn't applied as desktop properties are considered |
| * to be inapplicable in that case. In that headless case although |
| * this method will return "true" the toolkit will return a null map. |
| */ |
| private static boolean useSystemAAFontSettings() { |
| if (!checkedSystemAAFontSettings) { |
| useSystemAAFontSettings = true; /* initially set this true */ |
| String systemAAFonts = null; |
| Toolkit tk = Toolkit.getDefaultToolkit(); |
| if (tk instanceof SunToolkit) { |
| systemAAFonts = |
| AccessController.doPrivileged( |
| new GetPropertyAction("awt.useSystemAAFontSettings")); |
| } |
| if (systemAAFonts != null) { |
| useSystemAAFontSettings = |
| Boolean.valueOf(systemAAFonts).booleanValue(); |
| /* If it is anything other than "true", then it may be |
| * a hint name , or it may be "off, "default", etc. |
| */ |
| if (!useSystemAAFontSettings) { |
| desktopFontHints = getDesktopAAHintsByName(systemAAFonts); |
| } |
| } |
| /* If its still true, apply the extra condition */ |
| if (useSystemAAFontSettings) { |
| useSystemAAFontSettings = lastExtraCondition; |
| } |
| checkedSystemAAFontSettings = true; |
| } |
| return useSystemAAFontSettings; |
| } |
| |
| /* A variable defined for the convenience of JDK code */ |
| public static final String DESKTOPFONTHINTS = "awt.font.desktophints"; |
| |
| /* Overridden by subclasses to return platform/desktop specific values */ |
| protected RenderingHints getDesktopAAHints() { |
| return null; |
| } |
| |
| /* Subclass desktop property loading methods call this which |
| * in turn calls the appropriate subclass implementation of |
| * getDesktopAAHints() when system settings are being used. |
| * Its public rather than protected because subclasses may delegate |
| * to a helper class. |
| */ |
| public static RenderingHints getDesktopFontHints() { |
| if (useSystemAAFontSettings()) { |
| Toolkit tk = Toolkit.getDefaultToolkit(); |
| if (tk instanceof SunToolkit) { |
| Object map = ((SunToolkit)tk).getDesktopAAHints(); |
| return (RenderingHints)map; |
| } else { /* Headless Toolkit */ |
| return null; |
| } |
| } else if (desktopFontHints != null) { |
| /* cloning not necessary as the return value is cloned later, but |
| * its harmless. |
| */ |
| return (RenderingHints)(desktopFontHints.clone()); |
| } else { |
| return null; |
| } |
| } |
| |
| |
| public abstract boolean isDesktopSupported(); |
| public abstract boolean isTaskbarSupported(); |
| |
| /* |
| * consumeNextKeyTyped() method is not currently used, |
| * however Swing could use it in the future. |
| */ |
| public static synchronized void consumeNextKeyTyped(KeyEvent keyEvent) { |
| try { |
| AWTAccessor.getDefaultKeyboardFocusManagerAccessor().consumeNextKeyTyped( |
| (DefaultKeyboardFocusManager)KeyboardFocusManager. |
| getCurrentKeyboardFocusManager(), |
| keyEvent); |
| } catch (ClassCastException cce) { |
| cce.printStackTrace(); |
| } |
| } |
| |
| protected static void dumpPeers(final PlatformLogger aLog) { |
| AWTAutoShutdown.getInstance().dumpPeers(aLog); |
| } |
| |
| /** |
| * Returns the {@code Window} ancestor of the component {@code comp}. |
| * @return Window ancestor of the component or component by itself if it is Window; |
| * null, if component is not a part of window hierarchy |
| */ |
| public static Window getContainingWindow(Component comp) { |
| while (comp != null && !(comp instanceof Window)) { |
| comp = comp.getParent(); |
| } |
| return (Window)comp; |
| } |
| |
| private static Boolean sunAwtDisableMixing = null; |
| |
| /** |
| * Returns the value of "sun.awt.disableMixing" property. Default |
| * value is {@code false}. |
| */ |
| public static synchronized boolean getSunAwtDisableMixing() { |
| if (sunAwtDisableMixing == null) { |
| sunAwtDisableMixing = AccessController.doPrivileged( |
| new GetBooleanAction("sun.awt.disableMixing")); |
| } |
| return sunAwtDisableMixing.booleanValue(); |
| } |
| |
| /** |
| * Returns true if the native GTK libraries are available. The |
| * default implementation returns false, but UNIXToolkit overrides this |
| * method to provide a more specific answer. |
| */ |
| public boolean isNativeGTKAvailable() { |
| return false; |
| } |
| |
| private static final Object DEACTIVATION_TIMES_MAP_KEY = new Object(); |
| |
| public synchronized void setWindowDeactivationTime(Window w, long time) { |
| AppContext ctx = getAppContext(w); |
| if (ctx == null) { |
| return; |
| } |
| @SuppressWarnings("unchecked") |
| WeakHashMap<Window, Long> map = (WeakHashMap<Window, Long>)ctx.get(DEACTIVATION_TIMES_MAP_KEY); |
| if (map == null) { |
| map = new WeakHashMap<Window, Long>(); |
| ctx.put(DEACTIVATION_TIMES_MAP_KEY, map); |
| } |
| map.put(w, time); |
| } |
| |
| public synchronized long getWindowDeactivationTime(Window w) { |
| AppContext ctx = getAppContext(w); |
| if (ctx == null) { |
| return -1; |
| } |
| @SuppressWarnings("unchecked") |
| WeakHashMap<Window, Long> map = (WeakHashMap<Window, Long>)ctx.get(DEACTIVATION_TIMES_MAP_KEY); |
| if (map == null) { |
| return -1; |
| } |
| Long time = map.get(w); |
| return time == null ? -1 : time; |
| } |
| |
| public void updateScreenMenuBarUI() { |
| } |
| |
| // Cosntant alpha |
| public boolean isWindowOpacitySupported() { |
| return false; |
| } |
| |
| // Shaping |
| public boolean isWindowShapingSupported() { |
| return false; |
| } |
| |
| // Per-pixel alpha |
| public boolean isWindowTranslucencySupported() { |
| return false; |
| } |
| |
| public boolean isTranslucencyCapable(GraphicsConfiguration gc) { |
| return false; |
| } |
| |
| /** |
| * Returns true if swing backbuffer should be translucent. |
| */ |
| public boolean isSwingBackbufferTranslucencySupported() { |
| return false; |
| } |
| |
| /** |
| * Returns whether or not a containing top level window for the passed |
| * component is |
| * {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}. |
| * |
| * @param c a Component which toplevel's to check |
| * @return {@code true} if the passed component is not null and has a |
| * containing toplevel window which is opaque (so per-pixel translucency |
| * is not enabled), {@code false} otherwise |
| * @see GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT |
| */ |
| public static boolean isContainingTopLevelOpaque(Component c) { |
| Window w = getContainingWindow(c); |
| return w != null && w.isOpaque(); |
| } |
| |
| /** |
| * Returns whether or not a containing top level window for the passed |
| * component is |
| * {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}. |
| * |
| * @param c a Component which toplevel's to check |
| * @return {@code true} if the passed component is not null and has a |
| * containing toplevel window which has opacity less than |
| * 1.0f (which means that it is translucent), {@code false} otherwise |
| * @see GraphicsDevice.WindowTranslucency#TRANSLUCENT |
| */ |
| public static boolean isContainingTopLevelTranslucent(Component c) { |
| Window w = getContainingWindow(c); |
| return w != null && w.getOpacity() < 1.0f; |
| } |
| |
| /** |
| * Returns whether the native system requires using the peer.updateWindow() |
| * method to update the contents of a non-opaque window, or if usual |
| * painting procedures are sufficient. The default return value covers |
| * the X11 systems. On MS Windows this method is overriden in WToolkit |
| * to return true. |
| */ |
| public boolean needUpdateWindow() { |
| return false; |
| } |
| |
| /** |
| * Descendants of the SunToolkit should override and put their own logic here. |
| */ |
| public int getNumberOfButtons(){ |
| return 3; |
| } |
| |
| /** |
| * Checks that the given object implements/extends the given |
| * interface/class. |
| * |
| * Note that using the instanceof operator causes a class to be loaded. |
| * Using this method doesn't load a class and it can be used instead of |
| * the instanceof operator for performance reasons. |
| * |
| * @param obj Object to be checked |
| * @param type The name of the interface/class. Must be |
| * fully-qualified interface/class name. |
| * @return true, if this object implements/extends the given |
| * interface/class, false, otherwise, or if obj or type is null |
| */ |
| public static boolean isInstanceOf(Object obj, String type) { |
| if (obj == null) return false; |
| if (type == null) return false; |
| |
| return isInstanceOf(obj.getClass(), type); |
| } |
| |
| private static boolean isInstanceOf(Class<?> cls, String type) { |
| if (cls == null) return false; |
| |
| if (cls.getName().equals(type)) { |
| return true; |
| } |
| |
| for (Class<?> c : cls.getInterfaces()) { |
| if (c.getName().equals(type)) { |
| return true; |
| } |
| } |
| return isInstanceOf(cls.getSuperclass(), type); |
| } |
| |
| protected static LightweightFrame getLightweightFrame(Component c) { |
| for (; c != null; c = c.getParent()) { |
| if (c instanceof LightweightFrame) { |
| return (LightweightFrame)c; |
| } |
| if (c instanceof Window) { |
| // Don't traverse owner windows |
| return null; |
| } |
| } |
| return null; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // |
| // The following methods help set and identify whether a particular |
| // AWTEvent object was produced by the system or by user code. As of this |
| // writing the only consumer is the Java Plug-In, although this information |
| // could be useful to more clients and probably should be formalized in |
| // the public API. |
| // |
| /////////////////////////////////////////////////////////////////////////// |
| |
| public static void setSystemGenerated(AWTEvent e) { |
| AWTAccessor.getAWTEventAccessor().setSystemGenerated(e); |
| } |
| |
| public static boolean isSystemGenerated(AWTEvent e) { |
| return AWTAccessor.getAWTEventAccessor().isSystemGenerated(e); |
| } |
| |
| } // class SunToolkit |
| |
| |
| /* |
| * PostEventQueue is a Thread that runs in the same AppContext as the |
| * Java EventQueue. It is a queue of AWTEvents to be posted to the |
| * Java EventQueue. The toolkit Thread (AWT-Windows/AWT-Motif) posts |
| * events to this queue, which then calls EventQueue.postEvent(). |
| * |
| * We do this because EventQueue.postEvent() may be overridden by client |
| * code, and we mustn't ever call client code from the toolkit thread. |
| */ |
| class PostEventQueue { |
| private EventQueueItem queueHead = null; |
| private EventQueueItem queueTail = null; |
| private final EventQueue eventQueue; |
| |
| private Thread flushThread = null; |
| |
| PostEventQueue(EventQueue eq) { |
| eventQueue = eq; |
| } |
| |
| /* |
| * Continually post pending AWTEvents to the Java EventQueue. The method |
| * is synchronized to ensure the flush is completed before a new event |
| * can be posted to this queue. |
| * |
| * 7177040: The method couldn't be wholly synchronized because of calls |
| * of EventQueue.postEvent() that uses pushPopLock, otherwise it could |
| * potentially lead to deadlock |
| */ |
| public void flush() { |
| |
| Thread newThread = Thread.currentThread(); |
| |
| try { |
| EventQueueItem tempQueue; |
| synchronized (this) { |
| // Avoid method recursion |
| if (newThread == flushThread) { |
| return; |
| } |
| // Wait for other threads' flushing |
| while (flushThread != null) { |
| wait(); |
| } |
| // Skip everything if queue is empty |
| if (queueHead == null) { |
| return; |
| } |
| // Remember flushing thread |
| flushThread = newThread; |
| |
| tempQueue = queueHead; |
| queueHead = queueTail = null; |
| } |
| try { |
| while (tempQueue != null) { |
| eventQueue.postEvent(tempQueue.event); |
| tempQueue = tempQueue.next; |
| } |
| } |
| finally { |
| // Only the flushing thread can get here |
| synchronized (this) { |
| // Forget flushing thread, inform other pending threads |
| flushThread = null; |
| notifyAll(); |
| } |
| } |
| } |
| catch (InterruptedException e) { |
| // Couldn't allow exception go up, so at least recover the flag |
| newThread.interrupt(); |
| } |
| } |
| |
| /* |
| * Enqueue an AWTEvent to be posted to the Java EventQueue. |
| */ |
| void postEvent(AWTEvent event) { |
| EventQueueItem item = new EventQueueItem(event); |
| |
| synchronized (this) { |
| if (queueHead == null) { |
| queueHead = queueTail = item; |
| } else { |
| queueTail.next = item; |
| queueTail = item; |
| } |
| } |
| SunToolkit.wakeupEventQueue(eventQueue, event.getSource() == AWTAutoShutdown.getInstance()); |
| } |
| } // class PostEventQueue |