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deep-c-rsc/JCGO/sunawt/fix/sun/awt/SunToolkit.java

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/*
* This file is modified by Ivan Maidanski <ivmai@ivmaisoft.com>
* Project name: JCGO-SUNAWT (http://www.ivmaisoft.com/jcgo/)
*/
/*
* @(#)SunToolkit.java 1.76 03/01/23
*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package sun.awt;
import java.awt.*;
import java.awt.dnd.*;
import java.awt.dnd.peer.DragSourceContextPeer;
import java.awt.peer.*;
import java.awt.event.WindowEvent;
import java.awt.im.spi.InputMethodDescriptor;
import java.awt.image.*;
import java.awt.geom.AffineTransform;
import java.io.*;
import java.net.URL;
import java.net.JarURLConnection;
import java.security.AccessController;
import java.util.*;
import sun.misc.SoftCache;
import sun.awt.font.FontDesignMetrics;
import sun.awt.im.InputContext;
import sun.awt.im.SimpleInputMethodWindow;
import sun.awt.image.*;
import sun.awt.font.NativeFontWrapper;
import sun.security.action.GetPropertyAction;
import java.lang.reflect.Constructor;
public abstract class SunToolkit extends Toolkit
implements WindowClosingSupport, WindowClosingListener,
ComponentFactory, InputMethodSupport {
/* Force the debug helper classes to initialize */
{
DebugHelper.init();
}
private static boolean hotjavaUrlCache = false; // REMIND: UGH!!!!!
/* The key to put()/get() the PostEventQueue into/from the AppContext.
*/
private static final String POST_EVENT_QUEUE_KEY = "PostEventQueue";
public SunToolkit() {
/* If awt.threadgroup is set to class name the instance of
* this class is created (should be subclass of ThreadGroup)
* and EventDispatchThread is created inside of it
*
* If loaded class overrides uncaughtException instance
* handles all uncaught exception on EventDispatchThread
*/
ThreadGroup threadGroup = null;
String tgName = System.getProperty("awt.threadgroup", "");
if (tgName.length() != 0) {
try {
Constructor ctor = Class.forName(tgName).
getConstructor(new Class[] {String.class});
threadGroup = (ThreadGroup)ctor.newInstance(new Object[] {"AWT-ThreadGroup"});
} catch (Exception e) {
System.err.println("Failed loading " + tgName + ": " + e);
}
}
Runnable initEQ = new Runnable() {
public void run () {
EventQueue eventQueue;
String eqName = Toolkit.getProperty("AWT.EventQueueClass",
"java.awt.EventQueue");
try {
eventQueue = (EventQueue)Class.forName(eqName).newInstance();
} catch (Exception e) {
System.err.println("Failed loading " + eqName + ": " + e);
eventQueue = new EventQueue();
}
AppContext appContext = AppContext.getAppContext();
appContext.put(AppContext.EVENT_QUEUE_KEY, eventQueue);
PostEventQueue postEventQueue = new PostEventQueue(eventQueue);
appContext.put(POST_EVENT_QUEUE_KEY, postEventQueue);
}
};
if (threadGroup != null) {
Thread eqInitThread = new Thread(threadGroup, initEQ, "EventQueue-Init");
eqInitThread.start();
try {
eqInitThread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
} else {
initEQ.run();
}
}
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 FontPeer getFontPeer(String name, int style);
public abstract RobotPeer createRobot(Robot target, GraphicsDevice screen)
throws AWTException;
/*
* 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();
EventQueue eventQueue;
String eqName = Toolkit.getProperty("AWT.EventQueueClass",
"java.awt.EventQueue");
try {
eventQueue = (EventQueue)Class.forName(eqName).newInstance();
} catch (Exception e) {
System.err.println("Failed loading " + eqName + ": " + e);
eventQueue = new EventQueue();
}
AppContext appContext = new AppContext(threadGroup);
appContext.put(AppContext.EVENT_QUEUE_KEY, eventQueue);
PostEventQueue postEventQueue = new PostEventQueue(eventQueue);
appContext.put(POST_EVENT_QUEUE_KEY, postEventQueue);
return appContext;
}
private static native Object getPrivateKey(Object o);
static native void wakeupEventQueue(EventQueue q, boolean isShutdown);
// mapping of components to peers, Hashtable<Component,Peer>
protected static final Hashtable peerMap =
AWTAutoShutdown.getInstance().getPeerMap();
/*
* 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 peerMap.get(getPrivateKey(target));
}
return null;
}
protected static void targetCreatedPeer(Object target, Object peer) {
if (target != null && peer != null &&
!GraphicsEnvironment.isHeadless()) {
peerMap.put(getPrivateKey(target), peer);
}
}
protected static void targetDisposedPeer(Object target, Object peer) {
if (target != null && peer != null &&
!GraphicsEnvironment.isHeadless()) {
Object key = getPrivateKey(target);
if (peerMap.get(key) == peer) {
peerMap.remove(key);
}
}
}
// mapping of Components to AppContexts, WeakHashMap<Component,AppContext>
private static final Map appContextMap =
Collections.synchronizedMap(new WeakHashMap());
/*
* 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 (AppContext)appContextMap.get(getPrivateKey(target));
}
return null;
}
/**
* 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 native void setLWRequestStatus(Window changed, boolean status);
/**
* Moves the specified component to the specified order index in the
* specified container.
* <p>
* If the component already exists in this container or a child of
* this container, it is removed from that container before being
* added to this container.
* <p>
* The important difference of this method from
* <p>
* <blockquote>
* <code>java.awt.Container.add(Component comp, int index)</code>
* </blockquote>
* <p>
* is that this method doesn't call <code>removeNotify</code> on
* comp while removing it from its previous container. This way,
* if the component is lightweight and has focus, it will be moved
* to the new position and keep the focus when the method returns.
* <p>
* This method should not be used to move the component from one
* heavyweight container to another, and it should not be used for
* heavyweight components. If such an attempt is made, the result
* is unspecified.
* <p>
* It is recommended to call this method on EventDispatchThread.
* <p>
* @param cont the container to which the component should be added
* @param comp the component that should be added
* @param order the position in the container's list at which to
* insert the component, where <code>-1</code> means
* append to the end.
* @exception IllegalArgumentException if <code>index</code> is invalid
* @exception IllegalArgumentException if adding the container's parent
* to itself
* @exception IllegalArgumentException if adding a window to a container
*/
public static native void setZOrder(Container cont, Component comp, int order);
/*
* Insert a mapping from target to AppContext, for later retrieval
* via targetToAppContext() above.
*/
public static void insertTargetMapping(Object target, AppContext appContext) {
if (!GraphicsEnvironment.isHeadless()) {
appContextMap.put(getPrivateKey(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();
}
PostEventQueue postEventQueue =
(PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY);
if(postEventQueue != null) {
postEventQueue.postEvent(event);
}
}
/*
* Flush any pending events which haven't been posted to the AWT
* EventQueue yet.
*/
public static void flushPendingEvents() {
AppContext appContext = AppContext.getAppContext();
PostEventQueue postEventQueue =
(PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY);
if(postEventQueue != null) {
postEventQueue.flush();
}
}
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));
}
/*
* 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);
}
public Dimension getScreenSize() {
return new Dimension(getScreenWidth(), getScreenHeight());
}
protected abstract int getScreenWidth();
protected abstract int getScreenHeight();
public static final FontMetrics[] lastMetrics = new FontMetrics[5];
public FontMetrics getFontMetrics(Font font) {
for (int i = 0; i < lastMetrics.length; i++) {
FontMetrics lm = lastMetrics[i];
if (lm == null) {
break;
}
if (lm.getFont() == font) {
return lm;
}
}
FontMetrics lm = new FontDesignMetrics(font);
System.arraycopy(lastMetrics, 0, lastMetrics, 1, lastMetrics.length-1);
lastMetrics[0] = lm;
return lm;
}
public String[] getFontList() {
String[] hardwiredFontList = {
"Dialog", "SansSerif", "Serif", "Monospaced", "DialogInput"
// -- 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);
}
static SoftCache imgCache = new SoftCache();
static synchronized java.awt.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());
}
}
java.awt.Image img = (java.awt.Image)imgCache.get(url);
if (img == null) {
img = tk.createImage(new URLImageSource(url));
imgCache.put(url, img);
}
return img;
}
static synchronized java.awt.Image getImageFromHash(Toolkit tk,
String filename) {
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkRead(filename);
}
java.awt.Image img = (java.awt.Image)imgCache.get(filename);
if (img == null) {
img = tk.createImage(new FileImageSource(filename));
imgCache.put(filename, img);
}
return img;
}
public java.awt.Image getImage(String filename) {
return getImageFromHash(this, filename);
}
public java.awt.Image getImage(URL url) {
return getImageFromHash(this, url);
}
public java.awt.Image createImage(String filename) {
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkRead(filename);
}
return createImage(new FileImageSource(filename));
}
public java.awt.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 java.awt.Image createImage(byte[] data, int offset, int length) {
return createImage(new ByteArrayImageSource(data, offset, length));
}
protected EventQueue getSystemEventQueueImpl() {
return getSystemEventQueueImplPP();
}
// Package private implementation
static EventQueue getSystemEventQueueImplPP() {
AppContext appContext = AppContext.getAppContext();
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);
}
/**
* 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 = (String) AccessController.doPrivileged(
new GetPropertyAction("user.language", "en"));
// for compatibility, check for old user.region property
region = (String) 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 = (String) AccessController.doPrivileged(
new GetPropertyAction("user.country", ""));
variant = (String) 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;
}
}
} // 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 boolean noEvents() {
return queueHead == null;
}
/*
* Continually post pending AWTEvents to the Java EventQueue.
*/
public void flush() {
if (queueHead != null) {
EventQueueItem tempQueue;
/*
* We have to execute the loop inside the synchronized block
* to ensure that the flush is completed before a new event
* can be posted to this queue.
*/
synchronized (this) {
tempQueue = queueHead;
queueHead = queueTail = null;
/*
* If this PostEventQueue is flushed in parallel on two
* different threads tempQueue will be null for one of them.
*/
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
class EventQueueItem {
AWTEvent event;
EventQueueItem next;
EventQueueItem(AWTEvent evt) {
event = evt;
}
} // class EventQueueItem
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