| /* |
| * Copyright (c) 1997, 2011, 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 static java.awt.RenderingHints.*; |
| import java.awt.dnd.*; |
| import java.awt.dnd.peer.DragSourceContextPeer; |
| import java.awt.peer.*; |
| import java.awt.event.WindowEvent; |
| import java.awt.event.KeyEvent; |
| import java.awt.image.*; |
| import java.awt.TrayIcon; |
| import java.awt.SystemTray; |
| import java.awt.event.InputEvent; |
| import java.net.URL; |
| import java.util.*; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.locks.Condition; |
| import java.util.concurrent.locks.Lock; |
| import java.util.concurrent.locks.ReentrantLock; |
| import sun.util.logging.PlatformLogger; |
| import sun.misc.SoftCache; |
| import sun.font.FontDesignMetrics; |
| import sun.awt.im.InputContext; |
| import sun.awt.image.*; |
| import sun.security.action.GetPropertyAction; |
| import sun.security.action.GetBooleanAction; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.security.PrivilegedActionException; |
| import java.security.PrivilegedExceptionAction; |
| |
| public abstract class SunToolkit extends Toolkit |
| implements WindowClosingSupport, WindowClosingListener, |
| ComponentFactory, InputMethodSupport, KeyboardFocusManagerPeerProvider { |
| |
| private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.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; |
| |
| private static Method wakeupMethod; |
| /* 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 final static int MAX_BUTTONS_SUPPORTED = 20; |
| |
| private static void initEQ(AppContext appContext) { |
| EventQueue eventQueue; |
| |
| String eqName = System.getProperty("AWT.EventQueueClass", |
| "java.awt.EventQueue"); |
| |
| try { |
| eventQueue = (EventQueue)Class.forName(eqName).newInstance(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| System.err.println("Failed loading " + eqName + ": " + e); |
| eventQueue = new EventQueue(); |
| } |
| appContext.put(AppContext.EVENT_QUEUE_KEY, eventQueue); |
| |
| PostEventQueue postEventQueue = new PostEventQueue(eventQueue); |
| appContext.put(POST_EVENT_QUEUE_KEY, postEventQueue); |
| } |
| |
| public SunToolkit() { |
| // 7122796: Always create an EQ for the main AppContext |
| initEQ(AppContext.getMainAppContext()); |
| } |
| |
| public boolean useBufferPerWindow() { |
| return false; |
| } |
| |
| public abstract WindowPeer createWindow(Window target) |
| throws HeadlessException; |
| |
| public abstract FramePeer createFrame(Frame target) |
| throws HeadlessException; |
| |
| public abstract DialogPeer createDialog(Dialog target) |
| throws HeadlessException; |
| |
| public abstract ButtonPeer createButton(Button target) |
| throws HeadlessException; |
| |
| public abstract TextFieldPeer createTextField(TextField target) |
| throws HeadlessException; |
| |
| public abstract ChoicePeer createChoice(Choice target) |
| throws HeadlessException; |
| |
| public abstract LabelPeer createLabel(Label target) |
| throws HeadlessException; |
| |
| public abstract ListPeer createList(java.awt.List target) |
| throws HeadlessException; |
| |
| public abstract CheckboxPeer createCheckbox(Checkbox target) |
| throws HeadlessException; |
| |
| public abstract ScrollbarPeer createScrollbar(Scrollbar target) |
| throws HeadlessException; |
| |
| public abstract ScrollPanePeer createScrollPane(ScrollPane target) |
| throws HeadlessException; |
| |
| public abstract TextAreaPeer createTextArea(TextArea target) |
| throws HeadlessException; |
| |
| public abstract FileDialogPeer createFileDialog(FileDialog target) |
| throws HeadlessException; |
| |
| public abstract MenuBarPeer createMenuBar(MenuBar target) |
| throws HeadlessException; |
| |
| public abstract MenuPeer createMenu(Menu target) |
| throws HeadlessException; |
| |
| public abstract PopupMenuPeer createPopupMenu(PopupMenu target) |
| throws HeadlessException; |
| |
| public abstract MenuItemPeer createMenuItem(MenuItem target) |
| throws HeadlessException; |
| |
| public abstract CheckboxMenuItemPeer createCheckboxMenuItem( |
| CheckboxMenuItem target) |
| throws HeadlessException; |
| |
| public abstract DragSourceContextPeer createDragSourceContextPeer( |
| DragGestureEvent dge) |
| throws InvalidDnDOperationException; |
| |
| public abstract TrayIconPeer createTrayIcon(TrayIcon target) |
| throws HeadlessException, AWTException; |
| |
| public abstract SystemTrayPeer createSystemTray(SystemTray target); |
| |
| public abstract boolean isTraySupported(); |
| |
| @SuppressWarnings("deprecation") |
| public abstract FontPeer getFontPeer(String name, int style); |
| |
| public abstract RobotPeer createRobot(Robot target, GraphicsDevice screen) |
| throws AWTException; |
| |
| public abstract KeyboardFocusManagerPeer createKeyboardFocusManagerPeer(KeyboardFocusManager manager) |
| 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(); |
| // 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; |
| } |
| |
| public static Field getField(final Class<?> klass, final String fieldName) { |
| return AccessController.doPrivileged(new PrivilegedAction<Field>() { |
| public Field run() { |
| try { |
| Field field = klass.getDeclaredField(fieldName); |
| assert (field != null); |
| field.setAccessible(true); |
| return field; |
| } catch (SecurityException e) { |
| assert false; |
| } catch (NoSuchFieldException e) { |
| assert false; |
| } |
| return null; |
| }//run |
| }); |
| } |
| |
| static void wakeupEventQueue(EventQueue q, boolean isShutdown){ |
| if (wakeupMethod == null){ |
| wakeupMethod = AccessController.doPrivileged(new PrivilegedAction<Method>() { |
| public Method run() { |
| try { |
| Method method = EventQueue.class.getDeclaredMethod("wakeup",new Class [] {Boolean.TYPE} ); |
| if (method != null) { |
| method.setAccessible(true); |
| } |
| return method; |
| } catch (NoSuchMethodException e) { |
| assert false; |
| } catch (SecurityException e) { |
| assert false; |
| } |
| return null; |
| }//run |
| }); |
| } |
| try{ |
| if (wakeupMethod != null){ |
| wakeupMethod.invoke(q, new Object[]{Boolean.valueOf(isShutdown)}); |
| } |
| } catch (InvocationTargetException e){ |
| assert false; |
| } catch (IllegalAccessException e) { |
| assert false; |
| } |
| } |
| |
| /* |
| * 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 WeakHashMap<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 || GraphicsEnvironment.isHeadless()) { |
| 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</code> then the focus |
| * requests on lightweight components will be performed |
| * synchronously, if it is <code>false</code>, 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 w 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, boolean isSwingCont) |
| { |
| FocusTraversalPolicy defaultPolicy = KeyboardFocusManager |
| .getCurrentKeyboardFocusManager().getDefaultFocusTraversalPolicy(); |
| |
| String toolkitName = Toolkit.getDefaultToolkit().getClass().getName(); |
| // if this is not XAWT then use default policy |
| // because Swing change it |
| if (!"sun.awt.X11.XToolkit".equals(toolkitName)) { |
| cont.setFocusTraversalPolicy(defaultPolicy); |
| return; |
| } |
| |
| String policyName = defaultPolicy.getClass().getName(); |
| |
| if (DefaultFocusTraversalPolicy.class != defaultPolicy.getClass()) { |
| // Policy was changed |
| // Check if it is awt policy or swing policy |
| // If it is Swing policy we shouldn't use it in AWT frames |
| // If it is AWT policy we shouldn't use it in Swing frames |
| // Otherwise we should use this policy |
| if (policyName.startsWith("java.awt.")) { |
| // AWT |
| if (isSwingCont) { |
| // Can't use AWT policy in Swing windows - should use Swing's one. |
| defaultPolicy = createLayoutPolicy(); |
| } else { |
| // New awt policy. |
| } |
| } else if (policyName.startsWith("javax.swing.")) { |
| if (isSwingCont) { |
| // New Swing's policy |
| } else { |
| defaultPolicy = new DefaultFocusTraversalPolicy(); |
| } |
| } |
| } else { |
| // Policy is default, use different default policy for swing |
| if (isSwingCont) { |
| defaultPolicy = createLayoutPolicy(); |
| } |
| } |
| cont.setFocusTraversalPolicy(defaultPolicy); |
| } |
| |
| private static FocusTraversalPolicy createLayoutPolicy() { |
| FocusTraversalPolicy policy = null; |
| try { |
| Class<?> layoutPolicyClass = |
| Class.forName("javax.swing.LayoutFocusTraversalPolicy"); |
| policy = (FocusTraversalPolicy)layoutPolicyClass.newInstance(); |
| } |
| catch (ClassNotFoundException e) { |
| assert false; |
| } |
| catch (InstantiationException e) { |
| assert false; |
| } |
| catch (IllegalAccessException e) { |
| assert false; |
| } |
| |
| return policy; |
| } |
| |
| /* |
| * Insert a mapping from target to AppContext, for later retrieval |
| * via targetToAppContext() above. |
| */ |
| public static void insertTargetMapping(Object target, AppContext appContext) { |
| if (!GraphicsEnvironment.isHeadless()) { |
| 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(); |
| } |
| // 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)) { |
| log.fine("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() { |
| public void run() { |
| AWTAccessor.getAWTEventAccessor().setPosted(e); |
| ((Component)e.getSource()).dispatchEvent(e); |
| } |
| }, PeerEvent.ULTIMATE_PRIORITY_EVENT); |
| postEvent(targetToAppContext(e.getSource()), pe); |
| } |
| |
| protected static final Lock flushLock = new ReentrantLock(); |
| private static boolean isFlushingPendingEvents = false; |
| |
| /* |
| * Flush any pending events which haven't been posted to the AWT |
| * EventQueue yet. |
| */ |
| public static void flushPendingEvents() { |
| flushLock.lock(); |
| try { |
| // Don't call flushPendingEvents() recursively |
| if (!isFlushingPendingEvents) { |
| isFlushingPendingEvents = true; |
| AppContext appContext = AppContext.getAppContext(); |
| PostEventQueue postEventQueue = |
| (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); |
| if (postEventQueue != null) { |
| postEventQueue.flush(); |
| } |
| } |
| } finally { |
| isFlushingPendingEvents = false; |
| flushLock.unlock(); |
| } |
| } |
| |
| public static boolean isPostEventQueueEmpty() { |
| AppContext appContext = AppContext.getAppContext(); |
| PostEventQueue postEventQueue = |
| (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); |
| if (postEventQueue != null) { |
| return postEventQueue.noEvents(); |
| } else { |
| return true; |
| } |
| } |
| |
| /* |
| * 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) { |
| 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()</code> 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); |
| } |
| |
| public Dimension getScreenSize() { |
| return new Dimension(getScreenWidth(), getScreenHeight()); |
| } |
| protected abstract int getScreenWidth(); |
| protected abstract int getScreenHeight(); |
| |
| @SuppressWarnings("deprecation") |
| public FontMetrics getFontMetrics(Font font) { |
| return FontDesignMetrics.getMetrics(font); |
| } |
| |
| @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; |
| } |
| |
| public PanelPeer createPanel(Panel target) { |
| return (PanelPeer)createComponent(target); |
| } |
| |
| public CanvasPeer createCanvas(Canvas target) { |
| return (CanvasPeer)createComponent(target); |
| } |
| |
| /** |
| * 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")); |
| } |
| |
| |
| static final SoftCache imgCache = new SoftCache(); |
| |
| static Image getImageFromHash(Toolkit tk, URL url) { |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) { |
| try { |
| java.security.Permission perm = |
| url.openConnection().getPermission(); |
| 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()); |
| } |
| } |
| synchronized (imgCache) { |
| Image img = (Image)imgCache.get(url); |
| if (img == null) { |
| try { |
| img = tk.createImage(new URLImageSource(url)); |
| imgCache.put(url, img); |
| } catch (Exception e) { |
| } |
| } |
| return img; |
| } |
| } |
| |
| static Image getImageFromHash(Toolkit tk, |
| String filename) { |
| SecurityManager security = System.getSecurityManager(); |
| if (security != null) { |
| security.checkRead(filename); |
| } |
| synchronized (imgCache) { |
| Image img = (Image)imgCache.get(filename); |
| if (img == null) { |
| try { |
| img = tk.createImage(new FileImageSource(filename)); |
| imgCache.put(filename, img); |
| } catch (Exception e) { |
| } |
| } |
| return img; |
| } |
| } |
| |
| public Image getImage(String filename) { |
| return getImageFromHash(this, filename); |
| } |
| |
| public Image getImage(URL url) { |
| return getImageFromHash(this, url); |
| } |
| |
| public Image createImage(String filename) { |
| SecurityManager security = System.getSecurityManager(); |
| if (security != null) { |
| security.checkRead(filename); |
| } |
| return createImage(new FileImageSource(filename)); |
| } |
| |
| public Image createImage(URL url) { |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) { |
| try { |
| java.security.Permission perm = |
| url.openConnection().getPermission(); |
| 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()); |
| } |
| } |
| return createImage(new URLImageSource(url)); |
| } |
| |
| public Image createImage(byte[] data, int offset, int length) { |
| return createImage(new ByteArrayImageSource(data, offset, length)); |
| } |
| |
| public Image createImage(ImageProducer producer) { |
| return new ToolkitImage(producer); |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |
| |
| /** |
| * 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; |
| } |
| Image bestImage = null; |
| int bestWidth = 0; |
| int bestHeight = 0; |
| double bestSimilarity = 3; //Impossibly high value |
| double bestScaleFactor = 0; |
| for (Iterator<Image> i = imageList.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) { |
| if (log.isLoggable(PlatformLogger.FINER)) { |
| log.finer("SunToolkit.getScaledIconImage: " + |
| "Skipping the image passed into Java because it's 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){ |
| if (log.isLoggable(PlatformLogger.FINER)) { |
| log.finer("SunToolkit.getScaledIconImage: " + |
| "Perhaps the image passed into Java is broken. Skipping this icon."); |
| } |
| 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; |
| if (log.isLoggable(PlatformLogger.FINER)) { |
| log.finer("WWindowPeer.getScaledIconData() result : " + |
| "w : " + width + " h : " + height + |
| " iW : " + bestImage.getWidth(null) + " iH : " + bestImage.getHeight(null) + |
| " sim : " + bestSimilarity + " sf : " + bestScaleFactor + |
| " adjW : " + bestWidth + " adjH : " + bestHeight + |
| " x : " + x + " y : " + y); |
| } |
| 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) { |
| if (log.isLoggable(PlatformLogger.FINER)) { |
| log.finer("SunToolkit.getScaledIconData: " + |
| "Perhaps the image passed into Java is broken. Skipping this icon."); |
| } |
| return null; |
| } |
| Raster raster = bimage.getRaster(); |
| DataBuffer buffer = raster.getDataBuffer(); |
| return (DataBufferInt)buffer; |
| } |
| |
| 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. |
| */ |
| public int getFocusAcceleratorKeyMask() { |
| return InputEvent.ALT_MASK; |
| } |
| |
| /** |
| * 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. |
| */ |
| 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. |
| */ |
| 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 |
| */ |
| public Locale getDefaultKeyboardLocale() { |
| return getStartupLocale(); |
| } |
| |
| private static String dataTransfererClassName = null; |
| |
| protected static void setDataTransfererClassName(String className) { |
| dataTransfererClassName = className; |
| } |
| |
| public static String getDataTransfererClassName() { |
| if (dataTransfererClassName == null) { |
| Toolkit.getDefaultToolkit(); // transferer set during toolkit init |
| } |
| return dataTransfererClassName; |
| } |
| |
| // Support for window closing event notifications |
| private transient WindowClosingListener windowClosingListener = null; |
| /** |
| * @see sun.awt.WindowClosingSupport#getWindowClosingListener |
| */ |
| public WindowClosingListener getWindowClosingListener() { |
| return windowClosingListener; |
| } |
| /** |
| * @see sun.awt.WindowClosingSupport#setWindowClosingListener |
| */ |
| public void setWindowClosingListener(WindowClosingListener wcl) { |
| windowClosingListener = wcl; |
| } |
| |
| /** |
| * @see sun.awt.WindowClosingListener#windowClosingNotify |
| */ |
| public RuntimeException windowClosingNotify(WindowEvent event) { |
| if (windowClosingListener != null) { |
| return windowClosingListener.windowClosingNotify(event); |
| } else { |
| return null; |
| } |
| } |
| /** |
| * @see sun.awt.WindowClosingListener#windowClosingDelivered |
| */ |
| public RuntimeException windowClosingDelivered(WindowEvent event) { |
| if (windowClosingListener != null) { |
| return windowClosingListener.windowClosingDelivered(event); |
| } else { |
| return null; |
| } |
| } |
| |
| private static DefaultMouseInfoPeer mPeer = null; |
| |
| protected synchronized MouseInfoPeer getMouseInfoPeer() { |
| if (mPeer == null) { |
| mPeer = new DefaultMouseInfoPeer(); |
| } |
| return mPeer; |
| } |
| |
| |
| /** |
| * Returns whether default toolkit needs the support of the xembed |
| * from embedding host(if any). |
| * @return <code>true</code>, if XEmbed is needed, <code>false</code> 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</code>, if XEmbed is needed, <code>false</code> 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</code> has no |
| * effect, and <code>isModalExcluded</code> 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</code>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 |
| */ |
| public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) { |
| return (modalityType == Dialog.ModalityType.MODELESS) || |
| (modalityType == Dialog.ModalityType.APPLICATION_MODAL); |
| } |
| |
| /** |
| * Overridden in XToolkit and WToolkit |
| */ |
| 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); |
| } |
| |
| public void modalityPushed(ModalityEvent ev) { |
| Iterator<ModalityListener> it = listeners.iterator(); |
| while (it.hasNext()) { |
| it.next().modalityPushed(ev); |
| } |
| } |
| |
| 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); |
| } |
| |
| public static Method getMethod(final Class<?> clz, final String methodName, final Class[] params) { |
| Method res = null; |
| try { |
| res = AccessController.doPrivileged(new PrivilegedExceptionAction<Method>() { |
| public Method run() throws Exception { |
| Method m = clz.getDeclaredMethod(methodName, params); |
| m.setAccessible(true); |
| return m; |
| } |
| }); |
| } catch (PrivilegedActionException ex) { |
| ex.printStackTrace(); |
| } |
| return res; |
| } |
| |
| @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: |
| * <code> |
| * Frame f = ...; |
| * f.setVisible(true); |
| * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); |
| * </code> |
| * |
| * <p> After realSync, <code>f</code> 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: |
| * <code> |
| * b.requestFocus(); |
| * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); |
| * </code> |
| * |
| * <p> After realSync, <code>b</code> 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</code> if some events were processed, |
| * <code>false</code> otherwise. |
| */ |
| protected abstract boolean syncNativeQueue(final long timeout); |
| |
| private boolean eventDispatched = false; |
| private boolean queueEmpty = false; |
| private final Object waitLock = "Wait Lock"; |
| |
| static Method eqNoEvents; |
| |
| private boolean isEQEmpty() { |
| EventQueue queue = getSystemEventQueueImpl(); |
| synchronized(SunToolkit.class) { |
| if (eqNoEvents == null) { |
| eqNoEvents = getMethod(java.awt.EventQueue.class, "noEvents", null); |
| } |
| } |
| try { |
| return (Boolean)eqNoEvents.invoke(queue); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| return false; |
| } |
| } |
| |
| /** |
| * 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</code> if more processing is |
| * necessary, <code>false</code> otherwise. |
| */ |
| @SuppressWarnings("serial") |
| protected final boolean waitForIdle(final long timeout) { |
| flushPendingEvents(); |
| boolean queueWasEmpty = isEQEmpty(); |
| queueEmpty = false; |
| eventDispatched = false; |
| synchronized(waitLock) { |
| postEvent(AppContext.getAppContext(), |
| new PeerEvent(getSystemEventQueueImpl(), null, PeerEvent.LOW_PRIORITY_EVENT) { |
| 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(); |
| |
| /* |
| * consumeNextKeyTyped() method is not currently used, |
| * however Swing could use it in the future. |
| */ |
| private static Method consumeNextKeyTypedMethod = null; |
| public static synchronized void consumeNextKeyTyped(KeyEvent keyEvent) { |
| if (consumeNextKeyTypedMethod == null) { |
| consumeNextKeyTypedMethod = getMethod(DefaultKeyboardFocusManager.class, |
| "consumeNextKeyTyped", |
| new Class<?>[] {KeyEvent.class}); |
| } |
| try { |
| consumeNextKeyTypedMethod.invoke(KeyboardFocusManager.getCurrentKeyboardFocusManager(), |
| keyEvent); |
| } catch (IllegalAccessException iae) { |
| iae.printStackTrace(); |
| } catch (InvocationTargetException ite) { |
| ite.printStackTrace(); |
| } |
| } |
| |
| protected static void dumpPeers(final PlatformLogger aLog) { |
| AWTAutoShutdown.getInstance().dumpPeers(aLog); |
| } |
| |
| /** |
| * Returns the <code>Window</code> ancestor of the component <code>comp</code>. |
| * @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; |
| } |
| |
| /** |
| * Returns the value of the system property indicated by the specified key. |
| */ |
| public static String getSystemProperty(final String key) { |
| return AccessController.doPrivileged(new PrivilegedAction<String>() { |
| public String run() { |
| return System.getProperty(key); |
| } |
| }); |
| } |
| |
| /** |
| * Returns the boolean value of the system property indicated by the specified key. |
| */ |
| protected static Boolean getBooleanSystemProperty(String key) { |
| return AccessController.doPrivileged(new GetBooleanAction(key)); |
| } |
| |
| private static Boolean sunAwtDisableMixing = null; |
| |
| /** |
| * Returns the value of "sun.awt.disableMixing" property. Default |
| * value is {@code false}. |
| */ |
| public synchronized static boolean getSunAwtDisableMixing() { |
| if (sunAwtDisableMixing == null) { |
| sunAwtDisableMixing = getBooleanSystemProperty("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; |
| } |
| |
| // 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 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); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // |
| // 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; |
| |
| PostEventQueue(EventQueue eq) { |
| eventQueue = eq; |
| } |
| |
| public synchronized boolean noEvents() { |
| return queueHead == null; |
| } |
| |
| /* |
| * 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. |
| */ |
| public synchronized void flush() { |
| EventQueueItem tempQueue = queueHead; |
| queueHead = queueTail = null; |
| while (tempQueue != null) { |
| eventQueue.postEvent(tempQueue.event); |
| tempQueue = tempQueue.next; |
| } |
| } |
| |
| /* |
| * 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 |