Toolkit (Java 2 Platform SE v1.4.1)

java.awt
Class Toolkit
java.lang.Object
  |
  +--java.awt.Toolkit
public abstract class Toolkit
extends Object

abstract superclass of all actual implementations of the Abstract Window Toolkit. Subclasses of Toolkit are used to bind the various components to particular native toolkit implementations.
Most applications should not call any of the methods in this class directly. The methods defined by Toolkit are the "glue" that joins the platform-independent classes in the java.awt package with their counterparts in java.awt.peer. Some methods defined by Toolkit query the native operating system directly.

Since:

JDK1.0

Field Summary
protected Map desktopProperties

protected PropertyChangeSupport desktopPropsSupport


Constructor Summary
Toolkit()


Method Summary
void addAWTEventListener(AWTEventListener listener, long eventMask)
    Adds an AWTEventListener to receive all AWTEvents dispatched system-wide that conform to the given eventMask.
void addPropertyChangeListener(String name, PropertyChangeListener pcl)
    Adds the specified property change listener for the named desktop property.
abstract void beep()
    Emits an audio beep.
abstract int checkImage(Image image, int width, int height, ImageObserver observer)
    Indicates the construction status of a specified image that is being prepared for display.
protected abstract java.awt.peer.ButtonPeer createButton(Button target)
    Creates this toolkit's implementation of Button using the specified peer interface.
protected abstract java.awt.peer.CanvasPeer createCanvas(Canvas target)
    Creates this toolkit's implementation of Canvas using the specified peer interface.
protected abstract java.awt.peer.CheckboxPeer createCheckbox(Checkbox target)
    Creates this toolkit's implementation of Checkbox using the specified peer interface.
protected abstract java.awt.peer.CheckboxMenuItemPeer createCheckboxMenuItem(CheckboxMenuItem target)
    Creates this toolkit's implementation of CheckboxMenuItem using the specified peer interface.
protected abstract java.awt.peer.ChoicePeer createChoice(Choice target)
    Creates this toolkit's implementation of Choice using the specified peer interface.
protected java.awt.peer.LightweightPeer createComponent(Component target)
    Creates a peer for a component or container.
Cursor createCustomCursor(Image cursor, Point hotSpot, String name)
    Creates a new custom cursor object.
protected abstract java.awt.peer.DialogPeer createDialog(Dialog target)
    Creates this toolkit's implementation of Dialog using the specified peer interface.
DragGestureRecognizer createDragGestureRecognizer(Class abstractRecognizerClass, DragSource ds, Component c, int srcActions, DragGestureListener dgl)
    Creates a concrete, platform dependent, subclass of the abstract DragGestureRecognizer class requested, and associates it with the DragSource, Component and DragGestureListener specified.
abstract java.awt.dnd.peer.DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge)
    Creates the peer for a DragSourceContext.
protected abstract java.awt.peer.FileDialogPeer createFileDialog(FileDialog target)
    Creates this toolkit's implementation of FileDialog using the specified peer interface.
protected abstract java.awt.peer.FramePeer createFrame(Frame target)
    Creates this toolkit's implementation of Frame using the specified peer interface.
Image createImage(byte[] imagedata)
    Creates an image which decodes the image stored in the specified byte array.
abstract 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.
abstract Image createImage(ImageProducer producer)
    Creates an image with the specified image producer.
abstract Image createImage(String filename)
    Returns an image which gets pixel data from the specified file.
abstract Image createImage(URL url)
    Returns an image which gets pixel data from the specified URL.
protected abstract java.awt.peer.LabelPeer createLabel(Label target)
    Creates this toolkit's implementation of Label using the specified peer interface.
protected abstract java.awt.peer.ListPeer createList(List target)
    Creates this toolkit's implementation of List using the specified peer interface.
protected abstract java.awt.peer.MenuPeer createMenu(Menu target)
    Creates this toolkit's implementation of Menu using the specified peer interface.
protected abstract java.awt.peer.MenuBarPeer createMenuBar(MenuBar target)
    Creates this toolkit's implementation of MenuBar using the specified peer interface.
protected abstract java.awt.peer.MenuItemPeer createMenuItem(MenuItem target)
    Creates this toolkit's implementation of MenuItem using the specified peer interface.
protected abstract java.awt.peer.PanelPeer createPanel(Panel target)
    Creates this toolkit's implementation of Panel using the specified peer interface.
protected abstract java.awt.peer.PopupMenuPeer createPopupMenu(PopupMenu target)
    Creates this toolkit's implementation of PopupMenu using the specified peer interface.
protected abstract java.awt.peer.ScrollbarPeer createScrollbar(Scrollbar target)
    Creates this toolkit's implementation of Scrollbar using the specified peer interface.
protected abstract java.awt.peer.ScrollPanePeer createScrollPane(ScrollPane target)
    Creates this toolkit's implementation of ScrollPane using the specified peer interface.
protected abstract java.awt.peer.TextAreaPeer createTextArea(TextArea target)
    Creates this toolkit's implementation of TextArea using the specified peer interface.
protected abstract java.awt.peer.TextFieldPeer createTextField(TextField target)
    Creates this toolkit's implementation of TextField using the specified peer interface.
protected abstract java.awt.peer.WindowPeer createWindow(Window target)
    Creates this toolkit's implementation of Window using the specified peer interface.
AWTEventListener[] getAWTEventListeners()
    Returns an array of all the AWTEventListeners registered on this toolkit.
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.
Dimension getBestCursorSize(int preferredWidth, int preferredHeight)
    Returns the supported cursor dimension which is closest to the desired sizes.
abstract ColorModel getColorModel()
    Determines the color model of this toolkit's screen.
static Toolkit getDefaultToolkit()
    Gets the default toolkit.
Object getDesktopProperty(String propertyName)
    Obtains a value for the specified desktop property.
abstract String[] getFontList()
    Deprecated. see GraphicsEnvironment.getAvailableFontFamilyNames()
abstract FontMetrics getFontMetrics(Font font)
    Deprecated. As of JDK version 1.2, replaced by the Font method getLineMetrics.
protected abstract java.awt.peer.FontPeer getFontPeer(String name, int style)
    Deprecated. see java.awt.GraphicsEnvironment#getAllFonts
abstract Image getImage(String filename)
    Returns an image which gets pixel data from the specified file, whose format can be either GIF, JPEG or PNG.
abstract Image getImage(URL url)
    Returns an image which gets pixel data from the specified URL.
boolean getLockingKeyState(int keyCode)
    Returns whether the given locking key on the keyboard is currently in its "on" state.
int getMaximumCursorColors()
    Returns the maximum number of colors the Toolkit supports in a custom cursor palette.
int getMenuShortcutKeyMask()
    Determines which modifier key is the appropriate accelerator key for menu shortcuts.
protected static Container getNativeContainer(Component c)
    Give native peers the ability to query the native container given a native component (eg the direct parent may be lightweight).
PrintJob getPrintJob(Frame frame, String jobtitle, JobAttributes jobAttributes, PageAttributes pageAttributes)
    Gets a PrintJob object which is the result of initiating a print operation on the toolkit's platform.
abstract PrintJob getPrintJob(Frame frame, String jobtitle, Properties props)
    Gets a PrintJob object which is the result of initiating a print operation on the toolkit's platform.
static String getProperty(String key, String defaultValue)
    Gets a property with the specified key and default.
PropertyChangeListener[] getPropertyChangeListeners()
    Returns an array of all the property change listeners registered on this toolkit.
PropertyChangeListener[] getPropertyChangeListeners(String propertyName)
    Returns an array of all the PropertyChangeListeners associated with the named property.
Insets getScreenInsets(GraphicsConfiguration gc)
    Gets the insets of the screen.
abstract int getScreenResolution()
    Returns the screen resolution in dots-per-inch.
abstract Dimension getScreenSize()
    Gets the size of the screen.
abstract Clipboard getSystemClipboard()
    Gets the singleton instance of the system Clipboard which interfaces with clipboard facilities provided by the native platform.
EventQueue getSystemEventQueue()
    Get the application's or applet's EventQueue instance.
protected abstract EventQueue getSystemEventQueueImpl()

Clipboard getSystemSelection()
    Gets the singleton instance of the system selection as a Clipboard object.
protected void initializeDesktopProperties()
    initializeDesktopProperties
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).
protected boolean isDynamicLayoutSet()
    Returns whether the layout of Containers is validated dynamically during resizing, or statically, after resizing is complete.
boolean isFrameStateSupported(int state)
    Returns whether Toolkit supports this state for Frames.
protected Object lazilyLoadDesktopProperty(String name)
    an opportunity to lazily evaluate desktop property values.
protected void loadSystemColors(int[] systemColors)
    Fills in the integer array that is supplied as an argument with the current system color values.
abstract Map mapInputMethodHighlight(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.
abstract boolean prepareImage(Image image, int width, int height, ImageObserver observer)
    Prepares an image for rendering.
void removeAWTEventListener(AWTEventListener listener)
    Removes an AWTEventListener from receiving dispatched AWTEvents.
void removePropertyChangeListener(String name, PropertyChangeListener pcl)
    Removes the specified property change listener for the named desktop property.
protected void setDesktopProperty(String name, 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.
void setDynamicLayout(boolean dynamic)
    Controls whether the layout of Containers is validated dynamically during resizing, or statically, after resizing is complete.
void setLockingKeyState(int keyCode, boolean on)
    Sets the state of the given locking key on the keyboard.
abstract void sync()
    Synchronizes this toolkit's graphics state.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

desktopProperties
protected final Map desktopProperties
desktopPropsSupport
protected final PropertyChangeSupport desktopPropsSupport
Constructor Detail

Toolkit
public Toolkit()
Method Detail

createButton
protected abstract java.awt.peer.ButtonPeer createButton(Button target)
                                                  throws HeadlessException
Creates this toolkit's implementation of Button using the specified peer interface.

Parameters:
target - the button to be implemented.
Returns:
this toolkit's implementation of Button.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Button, ButtonPeer

createTextField
protected abstract java.awt.peer.TextFieldPeer createTextField(TextField target)
                                                        throws HeadlessException
Creates this toolkit's implementation of TextField using the specified peer interface.

Parameters:
target - the text field to be implemented.
Returns:
this toolkit's implementation of TextField.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), TextField, TextFieldPeer

createLabel
protected abstract java.awt.peer.LabelPeer createLabel(Label target)
                                                throws HeadlessException
Creates this toolkit's implementation of Label using the specified peer interface.

Parameters:
target - the label to be implemented.
Returns:
this toolkit's implementation of Label.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Label, LabelPeer

createList
protected abstract java.awt.peer.ListPeer createList(List target)
                                              throws HeadlessException
Creates this toolkit's implementation of List using the specified peer interface.

Parameters:
target - the list to be implemented.
Returns:
this toolkit's implementation of List.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), List, ListPeer

createCheckbox
protected abstract java.awt.peer.CheckboxPeer createCheckbox(Checkbox target)
                                                      throws HeadlessException
Creates this toolkit's implementation of Checkbox using the specified peer interface.

Parameters:
target - the check box to be implemented.
Returns:
this toolkit's implementation of Checkbox.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Checkbox, CheckboxPeer

createScrollbar
protected abstract java.awt.peer.ScrollbarPeer createScrollbar(Scrollbar target)
                                                        throws HeadlessException
Creates this toolkit's implementation of Scrollbar using the specified peer interface.

Parameters:
target - the scroll bar to be implemented.
Returns:
this toolkit's implementation of Scrollbar.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Scrollbar, ScrollbarPeer

createScrollPane
protected abstract java.awt.peer.ScrollPanePeer createScrollPane(ScrollPane target)
                                                          throws HeadlessException
Creates this toolkit's implementation of ScrollPane using the specified peer interface.

Parameters:
target - the scroll pane to be implemented.
Returns:
this toolkit's implementation of ScrollPane.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

JDK1.1

See Also:
GraphicsEnvironment.isHeadless(), ScrollPane, ScrollPanePeer

createTextArea
protected abstract java.awt.peer.TextAreaPeer createTextArea(TextArea target)
                                                      throws HeadlessException
Creates this toolkit's implementation of TextArea using the specified peer interface.

Parameters:
target - the text area to be implemented.
Returns:
this toolkit's implementation of TextArea.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), TextArea, TextAreaPeer

createChoice
protected abstract java.awt.peer.ChoicePeer createChoice(Choice target)
                                                  throws HeadlessException
Creates this toolkit's implementation of Choice using the specified peer interface.

Parameters:
target - the choice to be implemented.
Returns:
this toolkit's implementation of Choice.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Choice, ChoicePeer

createFrame
protected abstract java.awt.peer.FramePeer createFrame(Frame target)
                                                throws HeadlessException
Creates this toolkit's implementation of Frame using the specified peer interface.

Parameters:
target - the frame to be implemented.
Returns:
this toolkit's implementation of Frame.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Frame, FramePeer

createCanvas
protected abstract java.awt.peer.CanvasPeer createCanvas(Canvas target)
Creates this toolkit's implementation of Canvas using the specified peer interface.

Parameters:
target - the canvas to be implemented.
Returns:
this toolkit's implementation of Canvas.
See Also:
Canvas, CanvasPeer

createPanel
protected abstract java.awt.peer.PanelPeer createPanel(Panel target)
Creates this toolkit's implementation of Panel using the specified peer interface.

Parameters:
target - the panel to be implemented.
Returns:
this toolkit's implementation of Panel.
See Also:
Panel, PanelPeer

createWindow
protected abstract java.awt.peer.WindowPeer createWindow(Window target)
                                                  throws HeadlessException
Creates this toolkit's implementation of Window using the specified peer interface.

Parameters:
target - the window to be implemented.
Returns:
this toolkit's implementation of Window.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Window, WindowPeer

createDialog
protected abstract java.awt.peer.DialogPeer createDialog(Dialog target)
                                                  throws HeadlessException
Creates this toolkit's implementation of Dialog using the specified peer interface.

Parameters:
target - the dialog to be implemented.
Returns:
this toolkit's implementation of Dialog.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Dialog, DialogPeer

createMenuBar
protected abstract java.awt.peer.MenuBarPeer createMenuBar(MenuBar target)
                                                    throws HeadlessException
Creates this toolkit's implementation of MenuBar using the specified peer interface.

Parameters:
target - the menu bar to be implemented.
Returns:
this toolkit's implementation of MenuBar.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), MenuBar, MenuBarPeer

createMenu
protected abstract java.awt.peer.MenuPeer createMenu(Menu target)
                                              throws HeadlessException
Creates this toolkit's implementation of Menu using the specified peer interface.

Parameters:
target - the menu to be implemented.
Returns:
this toolkit's implementation of Menu.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), Menu, MenuPeer

createPopupMenu
protected abstract java.awt.peer.PopupMenuPeer createPopupMenu(PopupMenu target)
                                                        throws HeadlessException
Creates this toolkit's implementation of PopupMenu using the specified peer interface.

Parameters:
target - the popup menu to be implemented.
Returns:
this toolkit's implementation of PopupMenu.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

JDK1.1

See Also:
GraphicsEnvironment.isHeadless(), PopupMenu, PopupMenuPeer

createMenuItem
protected abstract java.awt.peer.MenuItemPeer createMenuItem(MenuItem target)
                                                      throws HeadlessException
Creates this toolkit's implementation of MenuItem using the specified peer interface.

Parameters:
target - the menu item to be implemented.
Returns:
this toolkit's implementation of MenuItem.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), MenuItem, MenuItemPeer

createFileDialog
protected abstract java.awt.peer.FileDialogPeer createFileDialog(FileDialog target)
                                                          throws HeadlessException
Creates this toolkit's implementation of FileDialog using the specified peer interface.

Parameters:
target - the file dialog to be implemented.
Returns:
this toolkit's implementation of FileDialog.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), FileDialog, FileDialogPeer

createCheckboxMenuItem
protected abstract java.awt.peer.CheckboxMenuItemPeer createCheckboxMenuItem(CheckboxMenuItem target)
                                                                      throws HeadlessException
Creates this toolkit's implementation of CheckboxMenuItem using the specified peer interface.

Parameters:
target - the checkbox menu item to be implemented.
Returns:
this toolkit's implementation of CheckboxMenuItem.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), CheckboxMenuItem, CheckboxMenuItemPeer

createComponent
protected java.awt.peer.LightweightPeer createComponent(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.

Parameters:
target - The Component to be created.

getFontPeer
protected abstract java.awt.peer.FontPeer getFontPeer(String name,
                                                      int style)
Deprecated. see java.awt.GraphicsEnvironment#getAllFonts

Creates this toolkit's implementation of Font using the specified peer interface.

Parameters:
name - the font to be implemented
style - the style of the font, such as PLAIN, BOLD, ITALIC, or a combination
Returns:
this toolkit's implementation of Font
See Also:
Font, FontPeer, GraphicsEnvironment.getAllFonts()

loadSystemColors
protected void loadSystemColors(int[] systemColors)
                         throws HeadlessException
Fills in the integer array that is supplied as an argument with the current system color values.

Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

JDK1.1

See Also:
GraphicsEnvironment.isHeadless()

setDynamicLayout
public void setDynamicLayout(boolean dynamic)
                      throws HeadlessException
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").

Parameters:
dynamic - If true, Containers should re-layout their components as the Container is being resized. If false, the layout will be validated after resizing is finished.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.4

See Also:
isDynamicLayoutSet(), isDynamicLayoutActive(), getDesktopProperty(String propertyName), GraphicsEnvironment.isHeadless()

isDynamicLayoutSet
protected boolean isDynamicLayoutSet()
                              throws HeadlessException
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").

Returns:
true if validation of Containers is done dynamically, false if validation is done after resizing is finished.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.4

See Also:
setDynamicLayout(boolean dynamic), isDynamicLayoutActive(), getDesktopProperty(String propertyName), GraphicsEnvironment.isHeadless()

isDynamicLayoutActive
public boolean isDynamicLayoutActive()
                              throws HeadlessException
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").

Returns:
true if dynamic layout of Containers on resize is currently active, false otherwise.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.4

See Also:
setDynamicLayout(boolean dynamic), isDynamicLayoutSet(), getDesktopProperty(String propertyName), GraphicsEnvironment.isHeadless()

getScreenSize
public abstract Dimension getScreenSize()
                                 throws HeadlessException
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.

Returns:
the size of this toolkit's screen, in pixels.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsConfiguration.getBounds(), GraphicsDevice.getDisplayMode(), GraphicsEnvironment.isHeadless()

getScreenResolution
public abstract int getScreenResolution()
                                 throws HeadlessException
Returns the screen resolution in dots-per-inch.

Returns:
this toolkit's screen resolution, in dots-per-inch.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless()

getScreenInsets
public Insets getScreenInsets(GraphicsConfiguration gc)
                       throws HeadlessException
Gets the insets of the screen.

Returns:
the insets of this toolkit's screen, in pixels.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.4

See Also:
GraphicsEnvironment.isHeadless()

getColorModel
public abstract ColorModel getColorModel()
                                  throws HeadlessException
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.

Returns:
the color model of this toolkit's screen.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless(), ColorModel, Component.getColorModel()

getFontList
public abstract String[] getFontList()
Deprecated. see GraphicsEnvironment.getAvailableFontFamilyNames()

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.

Returns:
the names of the available fonts in this toolkit.
See Also:
GraphicsEnvironment.getAvailableFontFamilyNames()

getFontMetrics
public abstract FontMetrics getFontMetrics(Font font)
Deprecated. As of JDK version 1.2, replaced by the Font method getLineMetrics.

Gets the screen device metrics for rendering of the font.

Parameters:
font - a font
Returns:
the screen metrics of the specified font in this toolkit
See Also:
LineMetrics, Font.getLineMetrics(java.lang.String, java.awt.font.FontRenderContext), GraphicsEnvironment.getScreenDevices()

sync
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.

getDefaultToolkit
public static 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.

Returns:
the default toolkit.
Throws:
AWTError - if a toolkit could not be found, or if one could not be accessed or instantiated.

getImage
public abstract Image getImage(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.

Parameters:
filename - the name of a file containing pixel data in a recognized file format.
Returns:
an image which gets its pixel data from the specified file.
See Also:
createImage(java.lang.String)

getImage
public abstract Image getImage(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.

Parameters:
url - the URL to use in fetching the pixel data.
Returns:
an image which gets its pixel data from the specified URL.
See Also:
createImage(java.net.URL)

createImage
public abstract Image createImage(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.

Parameters:
filename - the name of a file containing pixel data in a recognized file format.
Returns:
an image which gets its pixel data from the specified file.
See Also:
getImage(java.lang.String)

createImage
public abstract Image createImage(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.

Parameters:
url - the URL to use in fetching the pixel data.
Returns:
an image which gets its pixel data from the specified URL.
See Also:
getImage(java.net.URL)

prepareImage
public abstract boolean prepareImage(Image image,
                                     int width,
                                     int height,
                                     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.

Parameters:
image - the image for which to prepare a screen representation.
width - the width of the desired screen representation, or -1.
height - the height of the desired screen representation, or -1.
observer - the ImageObserver object to be notified as the image is being prepared.
Returns:
true if the image has already been fully prepared; false otherwise.
See Also:
Component.prepareImage(java.awt.Image, java.awt.image.ImageObserver), Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver), ImageObserver

checkImage
public abstract int checkImage(Image image,
                               int width,
                               int height,
                               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.

Parameters:
image - the image whose status is being checked.
width - the width of the scaled version whose status is being checked, or -1.
height - the height of the scaled version whose status is being checked, or -1.
observer - the ImageObserver object to be notified as the image is being prepared.
Returns:
the bitwise inclusive OR of the ImageObserver flags for the image data that is currently available.
See Also:
prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver), Component.checkImage(java.awt.Image, java.awt.image.ImageObserver), Component.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver), ImageObserver

createImage
public abstract Image createImage(ImageProducer producer)
Creates an image with the specified image producer.

Parameters:
producer - the image producer to be used.
Returns:
an image with the specified image producer.
See Also:
Image, ImageProducer, Component.createImage(java.awt.image.ImageProducer)

createImage
public 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.

Parameters:
imagedata - an array of bytes, representing image data in a supported image format.
Returns:
an image.
Since:

JDK1.1

createImage
public abstract 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.

Parameters:
imagedata - an array of bytes, representing image data in a supported image format.
imageoffset - the offset of the beginning of the data in the array.
imagelength - the length of the data in the array.
Returns:
an image.
Since:

JDK1.1

getPrintJob
public abstract PrintJob getPrintJob(Frame frame,
                                     String jobtitle,
                                     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.

Parameters:
frame - the parent of the print dialog. May not be null.
jobtitle - the title of the PrintJob. A null title is equivalent to "".
props - a Properties object containing zero or more properties. Properties are not standardized and are not consistent across implementations. Because of this, PrintJobs which require job and page control should use the version of this function which takes JobAttributes and PageAttributes objects. This object may be updated to reflect the user's job choices on exit. May be null.
Returns:
a PrintJob object, or null if the user cancelled the print job.
Throws:
NullPointerException - if frame is null. This exception is always thrown when GraphicsEnvironment.isHeadless() returns true.
SecurityException - if this thread is not allowed to initiate a print job request
Since:

JDK1.1

See Also:
GraphicsEnvironment.isHeadless(), PrintJob, RuntimePermission

getPrintJob
public PrintJob getPrintJob(Frame frame,
                            String jobtitle,
                            JobAttributes jobAttributes,
                            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.

Parameters:
frame - the parent of the print dialog. May be null if and only if jobAttributes is not null and jobAttributes.getDialog() returns JobAttributes.DialogType.NONE or JobAttributes.DialogType.COMMON.
jobtitle - the title of the PrintJob. A null title is equivalent to "".
jobAttributes - a set of job attributes which will control the PrintJob. The attributes will be updated to reflect the user's choices as outlined in the JobAttributes documentation. May be null.
pageAttributes - a set of page attributes which will control the PrintJob. The attributes will be applied to every page in the job. The attributes will be updated to reflect the user's choices as outlined in the PageAttributes documentation. May be null.
Returns:
a PrintJob object, or null if the user cancelled the print job.
Throws:
NullPointerException - if frame is null and either jobAttributes is null or jobAttributes.getDialog() returns JobAttributes.DialogType.NATIVE.
IllegalArgumentException - if pageAttributes specifies differing cross feed and feed resolutions. This exception is always thrown when GraphicsEnvironment.isHeadless() returns true.
SecurityException - if this thread is not allowed to initiate a print job request, or if jobAttributes specifies print to file, and this thread is not allowed to access the file system
Since:

1.3

See Also:
PrintJob, GraphicsEnvironment.isHeadless(), RuntimePermission, JobAttributes, PageAttributes

beep
public abstract void beep()
Emits an audio beep.

Since:

JDK1.1

getSystemClipboard
public abstract Clipboard getSystemClipboard()
                                      throws HeadlessException
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.

Returns:
the system Clipboard
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

JDK1.1

See Also:
GraphicsEnvironment.isHeadless(), Clipboard, StringSelection, java.awt.datatransfer.DataFlavor.stringFlavor, java.awt.datatransfer.DataFlavor.plainTextFlavor, Reader, AWTPermission

getSystemSelection
public Clipboard getSystemSelection()
                             throws HeadlessException
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.

Returns:
the system selection as a Clipboard, or null if the native platform does not support a system selection Clipboard
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.4

See Also:
Clipboard, FocusListener, FocusEvent.FOCUS_GAINED, FocusEvent.FOCUS_LOST, TextComponent, JTextComponent, AWTPermission, GraphicsEnvironment.isHeadless()

getMenuShortcutKeyMask
public int getMenuShortcutKeyMask()
                           throws HeadlessException
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.

Returns:
the modifier mask on the Event class that is used for menu shortcuts on this toolkit.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

JDK1.1

See Also:
GraphicsEnvironment.isHeadless(), MenuBar, MenuShortcut

getLockingKeyState
public boolean getLockingKeyState(int keyCode)
                           throws UnsupportedOperationException
Returns whether the given locking key on the keyboard is currently in its "on" state. Valid key codes are VK_CAPS_LOCK, VK_NUM_LOCK, VK_SCROLL_LOCK, and VK_KANA_LOCK.

Throws:
IllegalArgumentException - if keyCode is not one of the valid key codes
UnsupportedOperationException - if the host system doesn't allow getting the state of this key programmatically, or if the keyboard doesn't have this key
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.3

See Also:
GraphicsEnvironment.isHeadless()

setLockingKeyState
public void setLockingKeyState(int keyCode,
                               boolean on)
                        throws UnsupportedOperationException
Sets the state of the given locking key on the keyboard. Valid key codes are VK_CAPS_LOCK, VK_NUM_LOCK, VK_SCROLL_LOCK, and 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.

Throws:
IllegalArgumentException - if keyCode is not one of the valid key codes
UnsupportedOperationException - if the host system doesn't allow setting the state of this key programmatically, or if the keyboard doesn't have this key
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.3

See Also:
GraphicsEnvironment.isHeadless()

getNativeContainer
protected static Container getNativeContainer(Component c)
Give native peers the ability to query the native container given a native component (eg the direct parent may be lightweight).

createCustomCursor
public Cursor createCustomCursor(Image cursor,
                                 Point hotSpot,
                                 String name)
                          throws IndexOutOfBoundsException,
                                 HeadlessException
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.

Parameters:
hotSpot - the X and Y of the large cursor's hot spot; the hotSpot values must be less than the Dimension returned by getBestCursorSize
name - a localized description of the cursor, for Java Accessibility use
Throws:
IndexOutOfBoundsException - if the hotSpot values are outside the bounds of the cursor
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.2

See Also:
GraphicsEnvironment.isHeadless()

getBestCursorSize
public Dimension getBestCursorSize(int preferredWidth,
                                   int preferredHeight)
                            throws HeadlessException
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.

Returns:
the closest matching supported cursor size, or a dimension of 0,0 if the Toolkit implementation doesn't support custom cursors.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.2

See Also:
GraphicsEnvironment.isHeadless()

getMaximumCursorColors
public int getMaximumCursorColors()
                           throws HeadlessException
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.

Returns:
the maximum number of colors, or zero if custom cursors are not supported by this Toolkit implementation.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:

1.2

See Also:
GraphicsEnvironment.isHeadless()

isFrameStateSupported
public boolean isFrameStateSupported(int state)
                              throws HeadlessException
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.

Parameters:
state - one of named frame state constants.
Returns:
true is this frame state is supported by this Toolkit implementation, false otherwise.
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless() returns true.
Since:

1.4

See Also:
Frame.setExtendedState(int)

getProperty
public static String getProperty(String key,
                                 String defaultValue)
Gets a property with the specified key and default. This method returns defaultValue if the property is not found.

getSystemEventQueue
public final 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.

Returns:
the EventQueue object.
Throws:
SecurityException - if a security manager exists and its SecurityManager.checkAwtEventQueueAccess() method denies access to the EventQueue.
See Also:
AWTPermission

getSystemEventQueueImpl
protected abstract EventQueue getSystemEventQueueImpl()
createDragSourceContextPeer
public abstract java.awt.dnd.peer.DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge)
                                                                             throws InvalidDnDOperationException
Creates the peer for a DragSourceContext. Always throws InvalidDndOperationException if GraphicsEnvironment.isHeadless() returns true.

InvalidDnDOperationException
See Also:
GraphicsEnvironment.isHeadless()

createDragGestureRecognizer
public DragGestureRecognizer createDragGestureRecognizer(Class abstractRecognizerClass,
                                                         DragSource ds,
                                                         Component c,
                                                         int srcActions,
                                                         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

Parameters:
abstractRecognizerClass - The abstract class of the required recognizer
ds - The DragSource
c - The Component target for the DragGestureRecognizer
srcActions - The actions permitted for the gesture
dgl - The DragGestureListener
See Also:
GraphicsEnvironment.isHeadless()

getDesktopProperty
public final Object getDesktopProperty(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.

setDesktopProperty
protected final void setDesktopProperty(String name,
                                        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.

lazilyLoadDesktopProperty
protected Object lazilyLoadDesktopProperty(String name)
an opportunity to lazily evaluate desktop property values.

initializeDesktopProperties
protected void initializeDesktopProperties()
initializeDesktopProperties

addPropertyChangeListener
public void addPropertyChangeListener(String name,
                                      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.

Parameters:
name - The name of the property to listen for
pcl - The property change listener
Since:

1.2

removePropertyChangeListener
public void removePropertyChangeListener(String name,
                                         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.

Parameters:
name - The name of the property to remove
pcl - The property change listener
Since:

1.2

getPropertyChangeListeners
public PropertyChangeListener[] getPropertyChangeListeners()
Returns an array of all the property change listeners registered on this toolkit.

Returns:
all of this toolkit's PropertyChangeListeners or an empty array if no property change listeners are currently registered
Since:

1.4

getPropertyChangeListeners
public PropertyChangeListener[] getPropertyChangeListeners(String propertyName)
Returns an array of all the PropertyChangeListeners associated with the named property.

Parameters:
propertyName - the named property
Returns:
all of the PropertyChangeListeners associated with the named property or an empty array if no such listeners have been added
Since:

1.4

addAWTEventListener
public void addAWTEventListener(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.

Parameters:
listener - the event listener.
eventMask - the bitmask of event types to receive
Throws:
SecurityException - if a security manager exists and its checkPermission method doesn't allow the operation.
Since:

1.2

See Also:
removeAWTEventListener(java.awt.event.AWTEventListener), getAWTEventListeners(), SecurityManager.checkPermission(java.security.Permission), AWTEvent, AWTPermission, AWTEventListener, AWTEventListenerProxy

removeAWTEventListener
public void removeAWTEventListener(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.

Parameters:
listener - the event listener.
Throws:
SecurityException - if a security manager exists and its checkPermission method doesn't allow the operation.
Since:

1.2

See Also:
addAWTEventListener(java.awt.event.AWTEventListener, long), getAWTEventListeners(), SecurityManager.checkPermission(java.security.Permission), AWTEvent, AWTPermission, AWTEventListener, AWTEventListenerProxy

getAWTEventListeners
public 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.

Returns:
all of the AWTEventListeners or an empty array if no listeners are currently registered
Throws:
SecurityException - if a security manager exists and its checkPermission method doesn't allow the operation.
Since:

1.4

See Also:
addAWTEventListener(java.awt.event.AWTEventListener, long), removeAWTEventListener(java.awt.event.AWTEventListener), SecurityManager.checkPermission(java.security.Permission), AWTEvent, AWTPermission, AWTEventListener, AWTEventListenerProxy

getAWTEventListeners
public 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.

Returns:
all of the AWTEventListeners registered on this toolkit for the specified event types, or an empty array if no such listeners are currently registered
Throws:
SecurityException - if a security manager exists and its checkPermission method doesn't allow the operation.
Since:

1.4

See Also:
addAWTEventListener(java.awt.event.AWTEventListener, long), removeAWTEventListener(java.awt.event.AWTEventListener), SecurityManager.checkPermission(java.security.Permission), AWTEvent, AWTPermission, AWTEventListener, AWTEventListenerProxy

mapInputMethodHighlight
public abstract Map mapInputMethodHighlight(InputMethodHighlight highlight)
                                     throws HeadlessException
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.

Parameters:
highlight - input method highlight
Returns:
style attribute map, or null
Throws:
HeadlessException - if GraphicsEnvironment.isHeadless returns true
Since:

1.3

See Also:
GraphicsEnvironment.isHeadless()

Method Summary
void	addAWTEventListener(AWTEventListener listener, long eventMask) Adds an AWTEventListener to receive all AWTEvents dispatched system-wide that conform to the given eventMask.
void	addPropertyChangeListener(String name, PropertyChangeListener pcl) Adds the specified property change listener for the named desktop property.
abstract void	beep() Emits an audio beep.
abstract int	checkImage(Image image, int width, int height, ImageObserver observer) Indicates the construction status of a specified image that is being prepared for display.
protected abstract java.awt.peer.ButtonPeer	createButton(Button target) Creates this toolkit's implementation of Button using the specified peer interface.
protected abstract java.awt.peer.CanvasPeer	createCanvas(Canvas target) Creates this toolkit's implementation of Canvas using the specified peer interface.
protected abstract java.awt.peer.CheckboxPeer	createCheckbox(Checkbox target) Creates this toolkit's implementation of Checkbox using the specified peer interface.
protected abstract java.awt.peer.CheckboxMenuItemPeer	createCheckboxMenuItem(CheckboxMenuItem target) Creates this toolkit's implementation of CheckboxMenuItem using the specified peer interface.
protected abstract java.awt.peer.ChoicePeer	createChoice(Choice target) Creates this toolkit's implementation of Choice using the specified peer interface.
protected java.awt.peer.LightweightPeer	createComponent(Component target) Creates a peer for a component or container.
Cursor	createCustomCursor(Image cursor, Point hotSpot, String name) Creates a new custom cursor object.
protected abstract java.awt.peer.DialogPeer	createDialog(Dialog target) Creates this toolkit's implementation of Dialog using the specified peer interface.
DragGestureRecognizer	createDragGestureRecognizer(Class abstractRecognizerClass, DragSource ds, Component c, int srcActions, DragGestureListener dgl) Creates a concrete, platform dependent, subclass of the abstract DragGestureRecognizer class requested, and associates it with the DragSource, Component and DragGestureListener specified.
abstract java.awt.dnd.peer.DragSourceContextPeer	createDragSourceContextPeer(DragGestureEvent dge) Creates the peer for a DragSourceContext.
protected abstract java.awt.peer.FileDialogPeer	createFileDialog(FileDialog target) Creates this toolkit's implementation of FileDialog using the specified peer interface.
protected abstract java.awt.peer.FramePeer	createFrame(Frame target) Creates this toolkit's implementation of Frame using the specified peer interface.
Image	createImage(byte[] imagedata) Creates an image which decodes the image stored in the specified byte array.
abstract 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.
abstract Image	createImage(ImageProducer producer) Creates an image with the specified image producer.
abstract Image	createImage(String filename) Returns an image which gets pixel data from the specified file.
abstract Image	createImage(URL url) Returns an image which gets pixel data from the specified URL.
protected abstract java.awt.peer.LabelPeer	createLabel(Label target) Creates this toolkit's implementation of Label using the specified peer interface.
protected abstract java.awt.peer.ListPeer	createList(List target) Creates this toolkit's implementation of List using the specified peer interface.
protected abstract java.awt.peer.MenuPeer	createMenu(Menu target) Creates this toolkit's implementation of Menu using the specified peer interface.
protected abstract java.awt.peer.MenuBarPeer	createMenuBar(MenuBar target) Creates this toolkit's implementation of MenuBar using the specified peer interface.
protected abstract java.awt.peer.MenuItemPeer	createMenuItem(MenuItem target) Creates this toolkit's implementation of MenuItem using the specified peer interface.
protected abstract java.awt.peer.PanelPeer	createPanel(Panel target) Creates this toolkit's implementation of Panel using the specified peer interface.
protected abstract java.awt.peer.PopupMenuPeer	createPopupMenu(PopupMenu target) Creates this toolkit's implementation of PopupMenu using the specified peer interface.
protected abstract java.awt.peer.ScrollbarPeer	createScrollbar(Scrollbar target) Creates this toolkit's implementation of Scrollbar using the specified peer interface.
protected abstract java.awt.peer.ScrollPanePeer	createScrollPane(ScrollPane target) Creates this toolkit's implementation of ScrollPane using the specified peer interface.
protected abstract java.awt.peer.TextAreaPeer	createTextArea(TextArea target) Creates this toolkit's implementation of TextArea using the specified peer interface.
protected abstract java.awt.peer.TextFieldPeer	createTextField(TextField target) Creates this toolkit's implementation of TextField using the specified peer interface.
protected abstract java.awt.peer.WindowPeer	createWindow(Window target) Creates this toolkit's implementation of Window using the specified peer interface.
AWTEventListener[]	getAWTEventListeners() Returns an array of all the AWTEventListeners registered on this toolkit.
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.
Dimension	getBestCursorSize(int preferredWidth, int preferredHeight) Returns the supported cursor dimension which is closest to the desired sizes.
abstract ColorModel	getColorModel() Determines the color model of this toolkit's screen.
static Toolkit	getDefaultToolkit() Gets the default toolkit.
Object	getDesktopProperty(String propertyName) Obtains a value for the specified desktop property.
abstract String[]	getFontList() Deprecated. see GraphicsEnvironment.getAvailableFontFamilyNames()
abstract FontMetrics	getFontMetrics(Font font) Deprecated. As of JDK version 1.2, replaced by the Font method getLineMetrics.
protected abstract java.awt.peer.FontPeer	getFontPeer(String name, int style) Deprecated. see java.awt.GraphicsEnvironment#getAllFonts
abstract Image	getImage(String filename) Returns an image which gets pixel data from the specified file, whose format can be either GIF, JPEG or PNG.
abstract Image	getImage(URL url) Returns an image which gets pixel data from the specified URL.
boolean	getLockingKeyState(int keyCode) Returns whether the given locking key on the keyboard is currently in its "on" state.
int	getMaximumCursorColors() Returns the maximum number of colors the Toolkit supports in a custom cursor palette.
int	getMenuShortcutKeyMask() Determines which modifier key is the appropriate accelerator key for menu shortcuts.
protected static Container	getNativeContainer(Component c) Give native peers the ability to query the native container given a native component (eg the direct parent may be lightweight).
PrintJob	getPrintJob(Frame frame, String jobtitle, JobAttributes jobAttributes, PageAttributes pageAttributes) Gets a PrintJob object which is the result of initiating a print operation on the toolkit's platform.
abstract PrintJob	getPrintJob(Frame frame, String jobtitle, Properties props) Gets a PrintJob object which is the result of initiating a print operation on the toolkit's platform.
static String	getProperty(String key, String defaultValue) Gets a property with the specified key and default.
PropertyChangeListener[]	getPropertyChangeListeners() Returns an array of all the property change listeners registered on this toolkit.
PropertyChangeListener[]	getPropertyChangeListeners(String propertyName) Returns an array of all the PropertyChangeListeners associated with the named property.
Insets	getScreenInsets(GraphicsConfiguration gc) Gets the insets of the screen.
abstract int	getScreenResolution() Returns the screen resolution in dots-per-inch.
abstract Dimension	getScreenSize() Gets the size of the screen.
abstract Clipboard	getSystemClipboard() Gets the singleton instance of the system Clipboard which interfaces with clipboard facilities provided by the native platform.
EventQueue	getSystemEventQueue() Get the application's or applet's EventQueue instance.
protected abstract EventQueue	getSystemEventQueueImpl()
Clipboard	getSystemSelection() Gets the singleton instance of the system selection as a Clipboard object.
protected void	initializeDesktopProperties() initializeDesktopProperties
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).
protected boolean	isDynamicLayoutSet() Returns whether the layout of Containers is validated dynamically during resizing, or statically, after resizing is complete.
boolean	isFrameStateSupported(int state) Returns whether Toolkit supports this state for Frames.
protected Object	lazilyLoadDesktopProperty(String name) an opportunity to lazily evaluate desktop property values.
protected void	loadSystemColors(int[] systemColors) Fills in the integer array that is supplied as an argument with the current system color values.
abstract Map	mapInputMethodHighlight(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.
abstract boolean	prepareImage(Image image, int width, int height, ImageObserver observer) Prepares an image for rendering.
void	removeAWTEventListener(AWTEventListener listener) Removes an AWTEventListener from receiving dispatched AWTEvents.
void	removePropertyChangeListener(String name, PropertyChangeListener pcl) Removes the specified property change listener for the named desktop property.
protected void	setDesktopProperty(String name, 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.
void	setDynamicLayout(boolean dynamic) Controls whether the layout of Containers is validated dynamically during resizing, or statically, after resizing is complete.
void	setLockingKeyState(int keyCode, boolean on) Sets the state of the given locking key on the keyboard.
abstract void	sync() Synchronizes this toolkit's graphics state.

java.awt Class Toolkit

Field Summary

Constructor Summary

Method Summary

Field Detail

desktopProperties

desktopPropsSupport

Constructor Detail

Toolkit

Method Detail

createButton

createTextField

createLabel

createList

createCheckbox

createScrollbar

createScrollPane

createTextArea

createChoice

createFrame

createCanvas

createPanel

createWindow

createDialog

createMenuBar

createMenu

createPopupMenu

createMenuItem

createFileDialog

createCheckboxMenuItem

createComponent

getFontPeer

loadSystemColors

setDynamicLayout

isDynamicLayoutSet

isDynamicLayoutActive

getScreenSize

getScreenResolution

getScreenInsets

getColorModel

getFontList

getFontMetrics

sync

getDefaultToolkit

getImage

getImage

createImage

createImage

prepareImage

checkImage

createImage

createImage

createImage

getPrintJob

getPrintJob

beep

getSystemClipboard

getSystemSelection

getMenuShortcutKeyMask

getLockingKeyState

setLockingKeyState

getNativeContainer

createCustomCursor

getBestCursorSize

getMaximumCursorColors

isFrameStateSupported

getProperty

getSystemEventQueue

getSystemEventQueueImpl

createDragSourceContextPeer

createDragGestureRecognizer

getDesktopProperty

setDesktopProperty

lazilyLoadDesktopProperty

initializeDesktopProperties

addPropertyChangeListener

removePropertyChangeListener

getPropertyChangeListeners

getPropertyChangeListeners

addAWTEventListener

java.awt
Class Toolkit