| Methods Summary |
|---|
| public void | addAWTEventListener(java.awt.event.AWTEventListener listener, long eventMask)Adds an AWTEventListener to receive all AWTEvents dispatched
system-wide that conform to the given eventMask.
First, if there is a security manager, its checkPermission
method is called with an
AWTPermission("listenToAllAWTEvents") permission.
This may result in a SecurityException.
eventMask is a bitmask of event types to receive.
It is constructed by bitwise OR-ing together the event masks
defined in AWTEvent.
Note: event listener use is not recommended for normal
application use, but are intended solely to support special
purpose facilities including support for accessibility,
event record/playback, and diagnostic tracing.
If listener is null, no exception is thrown and no action is performed.
AWTEventListener localL = deProxyAWTEventListener(listener);
if (localL == null) {
return;
}
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
}
synchronized (this) {
SelectiveAWTEventListener selectiveListener =
(SelectiveAWTEventListener)listener2SelectiveListener.get(localL);
if (selectiveListener == null) {
// Create a new selectiveListener.
selectiveListener = new SelectiveAWTEventListener(localL,
eventMask);
listener2SelectiveListener.put(localL, selectiveListener);
eventListener = ToolkitEventMulticaster.add(eventListener,
selectiveListener);
}
// OR the eventMask into the selectiveListener's event mask.
selectiveListener.orEventMasks(eventMask);
enabledOnToolkitMask |= eventMask;
long mask = eventMask;
for (int i=0; i<LONG_BITS; i++) {
// If no bits are set, break out of loop.
if (mask == 0) {
break;
}
if ((mask & 1L) != 0) { // Always test bit 0.
calls[i]++;
}
mask >>>= 1; // Right shift, fill with zeros on left.
}
}
|
| public synchronized void | addPropertyChangeListener(java.lang.String name, java.beans.PropertyChangeListener pcl)Adds the specified property change listener for the named desktop
property.
If pcl is null, no exception is thrown and no action is performed.
if (pcl == null) {
return;
}
desktopPropsSupport.addPropertyChangeListener(name, pcl);
|
| public abstract void | beep()Emits an audio beep.
|
| public abstract int | checkImage(java.awt.Image image, int width, int height, java.awt.image.ImageObserver observer)Indicates the construction status of a specified image that is
being prepared for display.
If the values of the width and height arguments are both
-1, this method returns the construction status of
a screen representation of the specified image in this toolkit.
Otherwise, this method returns the construction status of a
scaled representation of the image at the specified width
and height.
This method does not cause the image to begin loading.
An application must call prepareImage to force
the loading of an image.
This method is called by the component's checkImage
methods.
Information on the flags returned by this method can be found
with the definition of the ImageObserver interface.
|
| synchronized int | countAWTEventListeners(long eventMask)
if (dbg.on) {
dbg.assertion(eventMask != 0);
}
int ci = 0;
for (; eventMask != 0; eventMask >>>= 1, ci++) {
}
ci--;
return calls[ci];
|
| protected abstract java.awt.peer.ButtonPeer | createButton(java.awt.Button target)Creates this toolkit's implementation of Button using
the specified peer interface.
|
| protected abstract java.awt.peer.CanvasPeer | createCanvas(java.awt.Canvas target)Creates this toolkit's implementation of Canvas using
the specified peer interface.
|
| protected abstract java.awt.peer.CheckboxPeer | createCheckbox(java.awt.Checkbox target)Creates this toolkit's implementation of Checkbox using
the specified peer interface.
|
| protected abstract java.awt.peer.CheckboxMenuItemPeer | createCheckboxMenuItem(java.awt.CheckboxMenuItem target)Creates this toolkit's implementation of CheckboxMenuItem using
the specified peer interface.
|
| protected abstract java.awt.peer.ChoicePeer | createChoice(java.awt.Choice target)Creates this toolkit's implementation of Choice using
the specified peer interface.
|
| protected java.awt.peer.LightweightPeer | createComponent(java.awt.Component target)Creates a peer for a component or container. This peer is windowless
and allows the Component and Container classes to be extended directly
to create windowless components that are defined entirely in java.
if (lightweightMarker == null) {
lightweightMarker = new NullComponentPeer();
}
return lightweightMarker;
|
| public java.awt.Cursor | createCustomCursor(java.awt.Image cursor, java.awt.Point hotSpot, java.lang.String name)Creates a new custom cursor object.
If the image to display is invalid, the cursor will be hidden (made
completely transparent), and the hotspot will be set to (0, 0).
Note that multi-frame images are invalid and may cause this
method to hang.
// Override to implement custom cursor support.
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().
createCustomCursor(cursor, hotSpot, name);
} else {
return new Cursor(Cursor.DEFAULT_CURSOR);
}
|
| protected abstract java.awt.peer.DialogPeer | createDialog(java.awt.Dialog target)Creates this toolkit's implementation of Dialog using
the specified peer interface.
|
| public T | createDragGestureRecognizer(java.lang.Class abstractRecognizerClass, java.awt.dnd.DragSource ds, java.awt.Component c, int srcActions, java.awt.dnd.DragGestureListener dgl)Creates a concrete, platform dependent, subclass of the abstract
DragGestureRecognizer class requested, and associates it with the
DragSource, Component and DragGestureListener specified.
subclasses should override this to provide their own implementation
return null;
|
| public abstract java.awt.dnd.peer.DragSourceContextPeer | createDragSourceContextPeer(java.awt.dnd.DragGestureEvent dge)Creates the peer for a DragSourceContext.
Always throws InvalidDndOperationException if
GraphicsEnvironment.isHeadless() returns true.
|
| protected abstract java.awt.peer.FileDialogPeer | createFileDialog(java.awt.FileDialog target)Creates this toolkit's implementation of FileDialog using
the specified peer interface.
|
| protected abstract java.awt.peer.FramePeer | createFrame(java.awt.Frame target)Creates this toolkit's implementation of Frame using
the specified peer interface.
|
| public abstract java.awt.Image | createImage(java.lang.String filename)Returns an image which gets pixel data from the specified file.
The returned Image is a new object which will not be shared
with any other caller of this method or its getImage variant.
|
| public abstract java.awt.Image | createImage(java.net.URL url)Returns an image which gets pixel data from the specified URL.
The returned Image is a new object which will not be shared
with any other caller of this method or its getImage variant.
|
| public abstract java.awt.Image | createImage(java.awt.image.ImageProducer producer)Creates an image with the specified image producer.
|
| public java.awt.Image | createImage(byte[] imagedata)Creates an image which decodes the image stored in the specified
byte array.
The data must be in some image format, such as GIF or JPEG,
that is supported by this toolkit.
return createImage(imagedata, 0, imagedata.length);
|
| public abstract java.awt.Image | createImage(byte[] imagedata, int imageoffset, int imagelength)Creates an image which decodes the image stored in the specified
byte array, and at the specified offset and length.
The data must be in some image format, such as GIF or JPEG,
that is supported by this toolkit.
|
| protected abstract java.awt.peer.LabelPeer | createLabel(java.awt.Label target)Creates this toolkit's implementation of Label using
the specified peer interface.
|
| protected abstract java.awt.peer.ListPeer | createList(java.awt.List target)Creates this toolkit's implementation of List using
the specified peer interface.
|
| protected abstract java.awt.peer.MenuPeer | createMenu(java.awt.Menu target)Creates this toolkit's implementation of Menu using
the specified peer interface.
|
| protected abstract java.awt.peer.MenuBarPeer | createMenuBar(java.awt.MenuBar target)Creates this toolkit's implementation of MenuBar using
the specified peer interface.
|
| protected abstract java.awt.peer.MenuItemPeer | createMenuItem(java.awt.MenuItem target)Creates this toolkit's implementation of MenuItem using
the specified peer interface.
|
| protected abstract java.awt.peer.PanelPeer | createPanel(java.awt.Panel target)Creates this toolkit's implementation of Panel using
the specified peer interface.
|
| protected abstract java.awt.peer.PopupMenuPeer | createPopupMenu(java.awt.PopupMenu target)Creates this toolkit's implementation of PopupMenu using
the specified peer interface.
|
| protected abstract java.awt.peer.ScrollPanePeer | createScrollPane(java.awt.ScrollPane target)Creates this toolkit's implementation of ScrollPane using
the specified peer interface.
|
| protected abstract java.awt.peer.ScrollbarPeer | createScrollbar(java.awt.Scrollbar target)Creates this toolkit's implementation of Scrollbar using
the specified peer interface.
|
| protected abstract java.awt.peer.TextAreaPeer | createTextArea(java.awt.TextArea target)Creates this toolkit's implementation of TextArea using
the specified peer interface.
|
| protected abstract java.awt.peer.TextFieldPeer | createTextField(java.awt.TextField target)Creates this toolkit's implementation of TextField using
the specified peer interface.
|
| protected abstract java.awt.peer.WindowPeer | createWindow(java.awt.Window target)Creates this toolkit's implementation of Window using
the specified peer interface.
|
| private static java.awt.event.AWTEventListener | deProxyAWTEventListener(java.awt.event.AWTEventListener l)
/*
* Extracts a "pure" AWTEventListener from a AWTEventListenerProxy,
* if the listener is proxied.
*/
AWTEventListener localL = l;
if (localL == null) {
return null;
}
// if user passed in a AWTEventListenerProxy object, extract
// the listener
if (l instanceof AWTEventListenerProxy) {
localL = (AWTEventListener)((AWTEventListenerProxy)l).getListener();
}
return localL;
|
| static boolean | enabledOnToolkit(long eventMask)
return (enabledOnToolkitMask & eventMask) != 0;
|
| public java.awt.event.AWTEventListener[] | getAWTEventListeners()Returns an array of all the AWTEventListeners
registered on this toolkit. Listeners can be returned
within AWTEventListenerProxy objects, which also contain
the event mask for the given listener.
Note that listener objects
added multiple times appear only once in the returned array.
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
}
synchronized (this) {
EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
AWTEventListener[] ret = new AWTEventListener[la.length];
for (int i = 0; i < la.length; i++) {
SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i];
AWTEventListener tempL = sael.getListener();
//assert tempL is not an AWTEventListenerProxy - we should
// have weeded them all out
// don't want to wrap a proxy inside a proxy
ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL);
}
return ret;
}
|
| public java.awt.event.AWTEventListener[] | getAWTEventListeners(long eventMask)Returns an array of all the AWTEventListeners
registered on this toolkit which listen to all of the event
types indicates in the eventMask argument.
Listeners can be returned
within AWTEventListenerProxy objects, which also contain
the event mask for the given listener.
Note that listener objects
added multiple times appear only once in the returned array.
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
}
synchronized (this) {
EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
java.util.List list = new ArrayList(la.length);
for (int i = 0; i < la.length; i++) {
SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i];
if ((sael.getEventMask() & eventMask) == eventMask) {
//AWTEventListener tempL = sael.getListener();
list.add(new AWTEventListenerProxy(sael.getEventMask(),
sael.getListener()));
}
}
return (AWTEventListener[])list.toArray(new AWTEventListener[0]);
}
|
| public java.awt.Dimension | getBestCursorSize(int preferredWidth, int preferredHeight)Returns the supported cursor dimension which is closest to the desired
sizes. Systems which only support a single cursor size will return that
size regardless of the desired sizes. Systems which don't support custom
cursors will return a dimension of 0, 0.
Note: if an image is used whose dimensions don't match a supported size
(as returned by this method), the Toolkit implementation will attempt to
resize the image to a supported size.
Since converting low-resolution images is difficult,
no guarantees are made as to the quality of a cursor image which isn't a
supported size. It is therefore recommended that this method
be called and an appropriate image used so no image conversion is made.
// Override to implement custom cursor support.
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().
getBestCursorSize(preferredWidth, preferredHeight);
} else {
return new Dimension(0, 0);
}
|
| public abstract java.awt.image.ColorModel | getColorModel()Determines the color model of this toolkit's screen.
ColorModel is an abstract class that
encapsulates the ability to translate between the
pixel values of an image and its red, green, blue,
and alpha components.
This toolkit method is called by the
getColorModel method
of the Component class.
|
| public static synchronized java.awt.Toolkit | getDefaultToolkit()Gets the default toolkit.
If there is a system property named "awt.toolkit",
that property is treated as the name of a class that is a subclass
of Toolkit.
If the system property does not exist, then the default toolkit
used is the class named "sun.awt.motif.MToolkit",
which is a motif implementation of the Abstract Window Toolkit.
Also loads additional classes into the VM, using the property
'assistive_technologies' specified in the Sun reference
implementation by a line in the 'accessibility.properties'
file. The form is "assistive_technologies=..." where
the "..." is a comma-separated list of assistive technology
classes to load. Each class is loaded in the order given
and a single instance of each is created using
Class.forName(class).newInstance(). This is done just after
the AWT toolkit is created. All errors are handled via an
AWTError exception.
if (toolkit == null) {
try {
// We disable the JIT during toolkit initialization. This
// tends to touch lots of classes that aren't needed again
// later and therefore JITing is counter-productiive.
java.lang.Compiler.disable();
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
String nm = null;
Class cls = null;
try {
String defaultToolkit;
if (System.getProperty("os.name").equals("Linux")) {
defaultToolkit = "sun.awt.X11.XToolkit";
}
else {
defaultToolkit = "sun.awt.motif.MToolkit";
}
nm = System.getProperty("awt.toolkit",
defaultToolkit);
try {
cls = Class.forName(nm);
} catch (ClassNotFoundException e) {
ClassLoader cl = ClassLoader.getSystemClassLoader();
if (cl != null) {
try {
cls = cl.loadClass(nm);
} catch (ClassNotFoundException ee) {
throw new AWTError("Toolkit not found: " + nm);
}
}
}
if (cls != null) {
toolkit = (Toolkit)cls.newInstance();
if (GraphicsEnvironment.isHeadless()) {
toolkit = new HeadlessToolkit(toolkit);
}
}
} catch (InstantiationException e) {
throw new AWTError("Could not instantiate Toolkit: " +
nm);
} catch (IllegalAccessException e) {
throw new AWTError("Could not access Toolkit: " + nm);
}
return null;
}
});
loadAssistiveTechnologies();
} finally {
// Make sure to always re-enable the JIT.
java.lang.Compiler.enable();
}
}
return toolkit;
|
| public final synchronized java.lang.Object | getDesktopProperty(java.lang.String propertyName)Obtains a value for the specified desktop property.
A desktop property is a uniquely named value for a resource that
is Toolkit global in nature. Usually it also is an abstract
representation for an underlying platform dependent desktop setting.
// This is a workaround for headless toolkits. It would be
// better to override this method but it is declared final.
// "this instanceof" syntax defeats polymorphism.
// --mm, 03/03/00
if (this instanceof HeadlessToolkit) {
return ((HeadlessToolkit)this).getUnderlyingToolkit()
.getDesktopProperty(propertyName);
}
if (desktopProperties.isEmpty()) {
initializeDesktopProperties();
}
Object value;
// This property should never be cached
if (propertyName.equals("awt.dynamicLayoutSupported")) {
value = lazilyLoadDesktopProperty(propertyName);
return value;
}
value = desktopProperties.get(propertyName);
if (value == null) {
value = lazilyLoadDesktopProperty(propertyName);
if (value != null) {
setDesktopProperty(propertyName, value);
}
}
return value;
|
| static java.awt.EventQueue | getEventQueue()
return getDefaultToolkit().getSystemEventQueueImpl();
|
| public abstract java.lang.String[] | getFontList()Returns the names of the available fonts in this toolkit.
For 1.1, the following font names are deprecated (the replacement
name follows):
- TimesRoman (use Serif)
- Helvetica (use SansSerif)
- Courier (use Monospaced)
The ZapfDingbats fontname is also deprecated in 1.1 but the characters
are defined in Unicode starting at 0x2700, and as of 1.1 Java supports
those characters.
|
| public abstract java.awt.FontMetrics | getFontMetrics(java.awt.Font font)Gets the screen device metrics for rendering of the font.
|
| protected abstract java.awt.peer.FontPeer | getFontPeer(java.lang.String name, int style)Creates this toolkit's implementation of Font using
the specified peer interface.
|
| public abstract java.awt.Image | getImage(java.lang.String filename)Returns an image which gets pixel data from the specified file,
whose format can be either GIF, JPEG or PNG.
The underlying toolkit attempts to resolve multiple requests
with the same filename to the same returned Image.
Since the mechanism required to facilitate this sharing of
Image objects may continue to hold onto images that are no
longer of use for an indefinite period of time, developers
are encouraged to implement their own caching of images by
using the createImage variant wherever available.
|
| public abstract java.awt.Image | getImage(java.net.URL url)Returns an image which gets pixel data from the specified URL.
The pixel data referenced by the specified URL must be in one
of the following formats: GIF, JPEG or PNG.
The underlying toolkit attempts to resolve multiple requests
with the same URL to the same returned Image.
Since the mechanism required to facilitate this sharing of
Image objects may continue to hold onto images that are no
longer of use for an indefinite period of time, developers
are encouraged to implement their own caching of images by
using the createImage variant wherever available.
|
| public boolean | getLockingKeyState(int keyCode)Returns whether the given locking key on the keyboard is currently in
its "on" state.
Valid key codes are
{@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
{@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
{@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
{@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK ||
keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
}
throw new UnsupportedOperationException("Toolkit.getLockingKeyState");
|
| public int | getMaximumCursorColors()Returns the maximum number of colors the Toolkit supports in a custom cursor
palette.
Note: if an image is used which has more colors in its palette than
the supported maximum, the Toolkit implementation will attempt to flatten the
palette to the maximum. Since converting low-resolution images is difficult,
no guarantees are made as to the quality of a cursor image which has more
colors than the system supports. It is therefore recommended that this method
be called and an appropriate image used so no image conversion is made.
// Override to implement custom cursor support.
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().getMaximumCursorColors();
} else {
return 0;
}
|
| public int | getMenuShortcutKeyMask()Determines which modifier key is the appropriate accelerator
key for menu shortcuts.
Menu shortcuts, which are embodied in the
MenuShortcut class, are handled by the
MenuBar class.
By default, this method returns Event.CTRL_MASK.
Toolkit implementations should override this method if the
Control key isn't the correct key for accelerators.
return Event.CTRL_MASK;
|
| protected java.awt.peer.MouseInfoPeer | getMouseInfoPeer()Obtains this toolkit's implementation of helper class for
MouseInfo operations.
throw new UnsupportedOperationException("Not implemented");
|
| protected static java.awt.Container | getNativeContainer(java.awt.Component c)Give native peers the ability to query the native container
given a native component (eg the direct parent may be lightweight).
return c.getNativeContainer();
|
| public abstract java.awt.PrintJob | getPrintJob(java.awt.Frame frame, java.lang.String jobtitle, java.util.Properties props)Gets a PrintJob object which is the result of initiating
a print operation on the toolkit's platform.
Each actual implementation of this method should first check if there
is a security manager installed. If there is, the method should call
the security manager's checkPrintJobAccess method to
ensure initiation of a print operation is allowed. If the default
implementation of checkPrintJobAccess is used (that is,
that method is not overriden), then this results in a call to the
security manager's checkPermission method with a
RuntimePermission("queuePrintJob") permission.
|
| public java.awt.PrintJob | getPrintJob(java.awt.Frame frame, java.lang.String jobtitle, java.awt.JobAttributes jobAttributes, java.awt.PageAttributes pageAttributes)Gets a PrintJob object which is the result of initiating
a print operation on the toolkit's platform.
Each actual implementation of this method should first check if there
is a security manager installed. If there is, the method should call
the security manager's checkPrintJobAccess method to
ensure initiation of a print operation is allowed. If the default
implementation of checkPrintJobAccess is used (that is,
that method is not overriden), then this results in a call to the
security manager's checkPermission method with a
RuntimePermission("queuePrintJob") permission.
// Override to add printing support with new job/page control classes
if (GraphicsEnvironment.isHeadless()) {
throw new IllegalArgumentException();
}
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle,
jobAttributes,
pageAttributes);
} else {
return getPrintJob(frame, jobtitle, null);
}
|
| public static java.lang.String | getProperty(java.lang.String key, java.lang.String defaultValue)Gets a property with the specified key and default.
This method returns defaultValue if the property is not found.
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
try {
resources =
ResourceBundle.getBundle("sun.awt.resources.awt");
} catch (MissingResourceException e) {
// No resource file; defaults will be used.
}
return null;
}
});
// ensure that the proper libraries are loaded
loadLibraries();
initAssistiveTechnologies();
if (!GraphicsEnvironment.isHeadless()) {
initIDs();
}
if (resources != null) {
try {
return resources.getString(key);
}
catch (MissingResourceException e) {}
}
return defaultValue;
|
| public java.beans.PropertyChangeListener[] | getPropertyChangeListeners()Returns an array of all the property change listeners
registered on this toolkit.
return desktopPropsSupport.getPropertyChangeListeners();
|
| public synchronized java.beans.PropertyChangeListener[] | getPropertyChangeListeners(java.lang.String propertyName)Returns an array of all the PropertyChangeListeners
associated with the named property.
return desktopPropsSupport.getPropertyChangeListeners(propertyName);
|
| public java.awt.Insets | getScreenInsets(java.awt.GraphicsConfiguration gc)Gets the insets of the screen.
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().getScreenInsets(gc);
} else {
return new Insets(0, 0, 0, 0);
}
|
| public abstract int | getScreenResolution()Returns the screen resolution in dots-per-inch.
|
| public abstract java.awt.Dimension | getScreenSize()Gets the size of the screen. On systems with multiple displays, the
primary display is used. Multi-screen aware display dimensions are
available from GraphicsConfiguration and
GraphicsDevice.
|
| public abstract java.awt.datatransfer.Clipboard | getSystemClipboard()Gets the singleton instance of the system Clipboard which interfaces
with clipboard facilities provided by the native platform. This
clipboard enables data transfer between Java programs and native
applications which use native clipboard facilities.
In addition to any and all formats specified in the flavormap.properties
file, or other file specified by the AWT.DnD.flavorMapFileURL
Toolkit property, text returned by the system Clipboard's
getTransferData() method is available in the following flavors:
- DataFlavor.stringFlavor
- DataFlavor.plainTextFlavor (deprecated)
As with java.awt.datatransfer.StringSelection, if the
requested flavor is DataFlavor.plainTextFlavor, or an
equivalent flavor, a Reader is returned. Note: The behavior of
the system Clipboard's getTransferData() method for
DataFlavor.plainTextFlavor, and equivalent DataFlavors, is
inconsistent with the definition of DataFlavor.plainTextFlavor
. Because of this, support for
DataFlavor.plainTextFlavor, and equivalent flavors, is
deprecated.
Each actual implementation of this method should first check if there
is a security manager installed. If there is, the method should call
the security manager's checkSystemClipboardAccess method
to ensure it's ok to to access the system clipboard. If the default
implementation of checkSystemClipboardAccess is used (that
is, that method is not overriden), then this results in a call to the
security manager's checkPermission method with an
AWTPermission("accessClipboard") permission.
|
| public final java.awt.EventQueue | getSystemEventQueue()Get the application's or applet's EventQueue instance.
Depending on the Toolkit implementation, different EventQueues
may be returned for different applets. Applets should
therefore not assume that the EventQueue instance returned
by this method will be shared by other applets or the system.
First, if there is a security manager, its
checkAwtEventQueueAccess
method is called.
If the default implementation of checkAwtEventQueueAccess
is used (that is, that method is not overriden), then this results in
a call to the security manager's checkPermission method
with an AWTPermission("accessEventQueue") permission.
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkAwtEventQueueAccess();
}
return getSystemEventQueueImpl();
|
| protected abstract java.awt.EventQueue | getSystemEventQueueImpl()Gets the application's or applet's EventQueue
instance, without checking access. For security reasons,
this can only be called from a Toolkit subclass.
|
| public java.awt.datatransfer.Clipboard | getSystemSelection()Gets the singleton instance of the system selection as a
Clipboard object. This allows an application to read and
modify the current, system-wide selection.
An application is responsible for updating the system selection whenever
the user selects text, using either the mouse or the keyboard.
Typically, this is implemented by installing a
FocusListener on all Components which support
text selection, and, between FOCUS_GAINED and
FOCUS_LOST events delivered to that Component,
updating the system selection Clipboard when the selection
changes inside the Component. Properly updating the system
selection ensures that a Java application will interact correctly with
native applications and other Java applications running simultaneously
on the system. Note that java.awt.TextComponent and
javax.swing.text.JTextComponent already adhere to this
policy. When using these classes, and their subclasses, developers need
not write any additional code.
Some platforms do not support a system selection Clipboard.
On those platforms, this method will return null. In such a
case, an application is absolved from its responsibility to update the
system selection Clipboard as described above.
Each actual implementation of this method should first check if there
is a SecurityManager installed. If there is, the method
should call the SecurityManager's
checkSystemClipboardAccess method to ensure that client
code has access the system selection. If the default implementation of
checkSystemClipboardAccess is used (that is, if the method
is not overridden), then this results in a call to the
SecurityManager's checkPermission method with
an AWTPermission("accessClipboard") permission.
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().getSystemSelection();
} else {
GraphicsEnvironment.checkHeadless();
return null;
}
|
| private static void | initAssistiveTechnologies()Initializes properties related to assistive technologies.
These properties are used both in the loadAssistiveProperties()
function below, as well as other classes in the jdk that depend
on the properties (such as the use of the screen_magnifier_present
property in Java2D hardware acceleration initialization). The
initialization of the properties must be done before the platform-
specific Toolkit class is instantiated so that all necessary
properties are set up properly before any classes dependent upon them
are initialized.
// Get accessibility properties
final String sep = File.separator;
final Properties properties = new Properties();
atNames = (String)java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
// Try loading the per-user accessibility properties file.
try {
File propsFile = new File(
System.getProperty("user.home") +
sep + ".accessibility.properties");
FileInputStream in =
new FileInputStream(propsFile);
// Inputstream has been buffered in Properties class
properties.load(in);
in.close();
} catch (Exception e) {
// Per-user accessibility properties file does not exist
}
// Try loading the system-wide accessibility properties
// file only if a per-user accessibility properties
// file does not exist or is empty.
if (properties.size() == 0) {
try {
File propsFile = new File(
System.getProperty("java.home") + sep + "lib" +
sep + "accessibility.properties");
FileInputStream in =
new FileInputStream(propsFile);
// Inputstream has been buffered in Properties class
properties.load(in);
in.close();
} catch (Exception e) {
// System-wide accessibility properties file does
// not exist;
}
}
// Get whether a screen magnifier is present. First check
// the system property and then check the properties file.
String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present");
if (magPresent == null) {
magPresent = properties.getProperty("screen_magnifier_present", null);
if (magPresent != null) {
System.setProperty("javax.accessibility.screen_magnifier_present", magPresent);
}
}
// Get the names of any assistive technolgies to load. First
// check the system property and then check the properties
// file.
String classNames = System.getProperty("javax.accessibility.assistive_technologies");
if (classNames == null) {
classNames = properties.getProperty("assistive_technologies", null);
if (classNames != null) {
System.setProperty("javax.accessibility.assistive_technologies", classNames);
}
}
return classNames;
}
});
|
| private static native void | initIDs()Initialize JNI field and method ids
|
| protected void | initializeDesktopProperties()initializeDesktopProperties
|
| public boolean | isDynamicLayoutActive()Returns whether dynamic layout of Containers on resize is
currently active (both set programmatically, and supported
by the underlying operating system and/or window manager).
The OS/WM support can be queried using
getDesktopProperty("awt.dynamicLayoutSupported").
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().isDynamicLayoutActive();
} else {
return false;
}
|
| protected boolean | isDynamicLayoutSet()Returns whether the layout of Containers is validated dynamically
during resizing, or statically, after resizing is complete.
Note: this method returns the value that was set programmatically;
it does not reflect support at the level of the operating system
or window manager for dynamic layout on resizing, or the current
operating system or window manager settings. The OS/WM support can
be queried using getDesktopProperty("awt.dynamicLayoutSupported").
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().isDynamicLayoutSet();
} else {
return false;
}
|
| public boolean | isFrameStateSupported(int state)Returns whether Toolkit supports this state for
Frames. This method tells whether the UI
concept of, say, maximization or iconification is
supported. It will always return false for "compound" states
like Frame.ICONIFIED|Frame.MAXIMIZED_VERT.
In other words, the rule of thumb is that only queries with a
single frame state constant as an argument are meaningful.
if (this != Toolkit.getDefaultToolkit()) {
return Toolkit.getDefaultToolkit().
isFrameStateSupported(state);
} else {
return (state == Frame.NORMAL); // others are not guaranteed
}
|
| protected java.lang.Object | lazilyLoadDesktopProperty(java.lang.String name)an opportunity to lazily evaluate desktop property values.
return null;
|
| private static void | loadAssistiveTechnologies()Loads additional classes into the VM, using the property
'assistive_technologies' specified in the Sun reference
implementation by a line in the 'accessibility.properties'
file. The form is "assistive_technologies=..." where
the "..." is a comma-separated list of assistive technology
classes to load. Each class is loaded in the order given
and a single instance of each is created using
Class.forName(class).newInstance(). All errors are handled
via an AWTError exception.
The assumption is made that assistive technology classes are supplied
as part of INSTALLED (as opposed to: BUNDLED) extensions or specified
on the class path
(and therefore can be loaded using the class loader returned by
a call to ClassLoader.getSystemClassLoader, whose
delegation parent is the extension class loader for installed
extensions).
// Load any assistive technologies
if (atNames != null) {
ClassLoader cl = ClassLoader.getSystemClassLoader();
StringTokenizer parser = new StringTokenizer(atNames," ,");
String atName;
while (parser.hasMoreTokens()) {
atName = parser.nextToken();
try {
Class clazz;
if (cl != null) {
clazz = cl.loadClass(atName);
} else {
clazz = Class.forName(atName);
}
clazz.newInstance();
} catch (ClassNotFoundException e) {
throw new AWTError("Assistive Technology not found: "
+ atName);
} catch (InstantiationException e) {
throw new AWTError("Could not instantiate Assistive"
+ " Technology: " + atName);
} catch (IllegalAccessException e) {
throw new AWTError("Could not access Assistive"
+ " Technology: " + atName);
} catch (Exception e) {
throw new AWTError("Error trying to install Assistive"
+ " Technology: " + atName + " " + e);
}
}
}
|
| static void | loadLibraries()
if (!loaded) {
java.security.AccessController.doPrivileged(
new sun.security.action.LoadLibraryAction("awt"));
loaded = true;
}
|
| protected void | loadSystemColors(int[] systemColors)Fills in the integer array that is supplied as an argument
with the current system color values.
|
| public abstract java.util.Map | mapInputMethodHighlight(java.awt.im.InputMethodHighlight highlight)Returns a map of visual attributes for the abstract level description
of the given input method highlight, or null if no mapping is found.
The style field of the input method highlight is ignored. The map
returned is unmodifiable.
|
| void | notifyAWTEventListeners(java.awt.AWTEvent theEvent)
// This is a workaround for headless toolkits. It would be
// better to override this method but it is declared package private.
// "this instanceof" syntax defeats polymorphism.
// --mm, 03/03/00
if (this instanceof HeadlessToolkit) {
((HeadlessToolkit)this).getUnderlyingToolkit()
.notifyAWTEventListeners(theEvent);
return;
}
AWTEventListener eventListener = this.eventListener;
if (eventListener != null) {
eventListener.eventDispatched(theEvent);
}
|
| public abstract boolean | prepareImage(java.awt.Image image, int width, int height, java.awt.image.ImageObserver observer)Prepares an image for rendering.
If the values of the width and height arguments are both
-1, this method prepares the image for rendering
on the default screen; otherwise, this method prepares an image
for rendering on the default screen at the specified width and height.
The image data is downloaded asynchronously in another thread,
and an appropriately scaled screen representation of the image is
generated.
This method is called by components prepareImage
methods.
Information on the flags returned by this method can be found
with the definition of the ImageObserver interface.
|
| public void | removeAWTEventListener(java.awt.event.AWTEventListener listener)Removes an AWTEventListener from receiving dispatched AWTEvents.
First, if there is a security manager, its checkPermission
method is called with an
AWTPermission("listenToAllAWTEvents") permission.
This may result in a SecurityException.
Note: event listener use is not recommended for normal
application use, but are intended solely to support special
purpose facilities including support for accessibility,
event record/playback, and diagnostic tracing.
If listener is null, no exception is thrown and no action is performed.
AWTEventListener localL = deProxyAWTEventListener(listener);
if (listener == null) {
return;
}
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
}
synchronized (this) {
SelectiveAWTEventListener selectiveListener =
(SelectiveAWTEventListener)listener2SelectiveListener.get(localL);
if (selectiveListener != null) {
listener2SelectiveListener.remove(localL);
int[] listenerCalls = selectiveListener.getCalls();
for (int i=0; i<LONG_BITS; i++) {
calls[i] -= listenerCalls[i];
assert calls[i] >= 0: "Negative Listeners count";
if (calls[i] == 0) {
enabledOnToolkitMask &= ~(1L<<i);
}
}
}
eventListener = ToolkitEventMulticaster.remove(eventListener,
(selectiveListener == null) ? localL : selectiveListener);
}
|
| public synchronized void | removePropertyChangeListener(java.lang.String name, java.beans.PropertyChangeListener pcl)Removes the specified property change listener for the named
desktop property.
If pcl is null, no exception is thrown and no action is performed.
if (pcl == null) {
return;
}
desktopPropsSupport.removePropertyChangeListener(name, pcl);
|
| protected final void | setDesktopProperty(java.lang.String name, java.lang.Object newValue)Sets the named desktop property to the specified value and fires a
property change event to notify any listeners that the value has changed.
// This is a workaround for headless toolkits. It would be
// better to override this method but it is declared final.
// "this instanceof" syntax defeats polymorphism.
// --mm, 03/03/00
if (this instanceof HeadlessToolkit) {
((HeadlessToolkit)this).getUnderlyingToolkit()
.setDesktopProperty(name, newValue);
return;
}
Object oldValue;
synchronized (this) {
oldValue = desktopProperties.get(name);
desktopProperties.put(name, newValue);
}
desktopPropsSupport.firePropertyChange(name, oldValue, newValue);
|
| public void | setDynamicLayout(boolean dynamic)Controls whether the layout of Containers is validated dynamically
during resizing, or statically, after resizing is complete.
Note that this feature is not supported on all platforms, and
conversely, that this feature cannot be turned off on some platforms.
On platforms where dynamic layout during resize is not supported
(or is always supported), setting this property has no effect.
Note that this feature can be set or unset as a property of the
operating system or window manager on some platforms. On such
platforms, the dynamic resize property must be set at the operating
system or window manager level before this method can take effect.
This method does not change the underlying operating system or
window manager support or settings. The OS/WM support can be
queried using getDesktopProperty("awt.dynamicLayoutSupported").
|
| public void | setLockingKeyState(int keyCode, boolean on)Sets the state of the given locking key on the keyboard.
Valid key codes are
{@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
{@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
{@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
{@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
Depending on the platform, setting the state of a locking key may
involve event processing and therefore may not be immediately
observable through getLockingKeyState.
if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK ||
keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState");
}
throw new UnsupportedOperationException("Toolkit.setLockingKeyState");
|
| public abstract void | sync()Synchronizes this toolkit's graphics state. Some window systems
may do buffering of graphics events.
This method ensures that the display is up-to-date. It is useful
for animation.
|
