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java.awt
Class Window
java.lang.Object
java.awt.Component
java.awt.Container
java.awt.Window
-
All Implemented Interfaces:
-
ImageObserver
,
MenuContainer
,
Serializable
,
Accessible
-
Direct Known Subclasses:
-
BasicToolBarUI.DragWindow
,
Dialog
,
Frame
,
JWindow
-
public class Window
- extends Container
- implements Accessible
A Window object is a top-level window with no borders and no menubar. The default layout for a window is BorderLayout.
A window must have either a frame, dialog, or another window defined as its owner when it's constructed.
In a multi-screen environment, you can create a Window on a different screen device by constructing the Window with
Window(Window, GraphicsConfiguration)
. The GraphicsConfiguration object is one of the GraphicsConfiguration objects of the target screen device.
In a virtual device multi-screen environment in which the desktop area could span multiple physical screen devices, the bounds of all configurations are relative to the virtual device coordinate system. The origin of the virtual-coordinate system is at the upper left-hand corner of the primary physical screen. Depending on the location of the primary screen in the virtual device, negative coordinates are possible, as shown in the following figure.
In such an environment, when calling setLocation, you must pass a virtual coordinate to this method. Similarly, calling getLocationOnScreen on a Window returns virtual device coordinates. Call the getBounds method of a GraphicsConfiguration to find its origin in the virtual coordinate system.
The following code sets the location of a Window at (10, 10) relative to the origin of the physical screen of the corresponding GraphicsConfiguration. If the bounds of the GraphicsConfiguration is not taken into account, the Window location would be set at (10, 10) relative to the virtual-coordinate system and would appear on the primary physical screen, which might be different from the physical screen of the specified GraphicsConfiguration.
Window w = new Window(Window owner, GraphicsConfiguration gc);
Rectangle bounds = gc.getBounds();
w.setLocation(10 + bounds.x, 10 + bounds.y);
Note: the location and size of top-level windows (including Windows, Frames, and Dialogs) are under the control of the desktop's window management system. Calls to setLocation, setSize, and setBounds are requests (not directives) which are forwarded to the window management system. Every effort will be made to honor such requests. However, in some cases the window management system may ignore such requests, or modify the requested geometry in order to place and size the Window in a way that more closely matches the desktop settings.
Due to the asynchronous nature of native event handling, the results returned by getBounds, getLocation, getLocationOnScreen, and getSize might not reflect the actual geometry of the Window on screen until the last request has been processed. During the processing of subsequent requests these values might change accordingly while the window management system fulfills the requests.
An application may set the size and location of an invisible Window arbitrarily, but the window management system may subsequently change its size and/or location when the Window is made visible. One or more {@code ComponentEvent)s will be generated to indicate the new geometry.
Windows are capable of generating the following WindowEvents: WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus.
-
Since:
-
JDK1.0
-
See Also:
-
WindowEvent
,
addWindowListener(java.awt.event.WindowListener)
,
BorderLayout
,
Serialized Form
Nested Class Summary
|
protected class
|
Window.AccessibleAWTWindow
This class implements accessibility support for the Window class.
|
Nested classes/interfaces inherited from class java.awt.
Container
|
Container.AccessibleAWTContainer
|
Field Summary
|
Fields inherited from interface java.awt.image.
ImageObserver
|
ABORT
,
ALLBITS
,
ERROR
,
FRAMEBITS
,
HEIGHT
,
PROPERTIES
,
SOMEBITS
,
WIDTH
|
Constructor Summary
|
Window
(
Frame
Constructs a new invisible window with the specified Frame as its owner.
|
Window
(
Window
Constructs a new invisible window with the specified Window as its owner.
|
Window
(
Window
owner,
GraphicsConfiguration
Constructs a new invisible window with the specified owner Window and a GraphicsConfiguration of a screen device.
|
Method Summary
|
void
|
addNotify
()
Makes this Window displayable by creating the connection to its native screen resource.
|
void
|
addPropertyChangeListener
(
PropertyChangeListener
Adds a PropertyChangeListener to the listener list.
|
void
|
addPropertyChangeListener
(
String
propertyName,
PropertyChangeListener
Adds a PropertyChangeListener to the listener list for a specific property.
|
void
|
addWindowFocusListener
(
WindowFocusListener
Adds the specified window focus listener to receive window events from this window.
|
void
|
addWindowListener
(
WindowListener
Adds the specified window listener to receive window events from this window.
|
void
|
addWindowStateListener
(
WindowStateListener
Adds the specified window state listener to receive window events from this window.
|
void
|
applyResourceBundle
(
ResourceBundle
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
|
void
|
applyResourceBundle
(
String
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
|
void
|
createBufferStrategy
(int numBuffers)
Creates a new strategy for multi-buffering on this component.
|
void
|
createBufferStrategy
(int numBuffers,
BufferCapabilities
Creates a new strategy for multi-buffering on this component with the required buffer capabilities.
|
void
|
dispose
()
Releases all of the native screen resources used by this Window, its subcomponents, and all of its owned children.
|
AccessibleContext
|
getAccessibleContext
()
Gets the AccessibleContext associated with this Window.
|
BufferStrategy
|
getBufferStrategy
()
Returns the BufferStrategy used by this component.
|
boolean
|
getFocusableWindowState
()
Returns whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow.
|
Container
|
getFocusCycleRootAncestor
()
Always returns null because Windows have no ancestors; they represent the top of the Component hierarchy.
|
Component
|
getFocusOwner
()
Returns the child Component of this Window that has focus if this Window is focused; returns null otherwise.
|
Set
<
AWTKeyStroke
|
getFocusTraversalKeys
(int id)
Gets a focus traversal key for this Window.
|
GraphicsConfiguration
|
getGraphicsConfiguration
()
This method returns the GraphicsConfiguration used by this Window.
|
InputContext
|
getInputContext
()
Gets the input context for this window.
|
|
getListeners
(
Class
<T> listenerType)
Returns an array of all the objects currently registered as FooListeners upon this Window.
|
Locale
|
getLocale
()
Gets the Locale object that is associated with this window, if the locale has been set.
|
Dialog.ModalExclusionType
|
getModalExclusionType
()
Returns the modal exclusion type of this window.
|
Component
|
getMostRecentFocusOwner
()
Returns the child Component of this Window that will receive the focus when this Window is focused.
|
Window
|
getOwnedWindows
()
Return an array containing all the windows this window currently owns.
|
Window
|
getOwner
()
Returns the owner of this window.
|
Toolkit
|
getToolkit
()
Returns the toolkit of this frame.
|
String
|
getWarningString
()
Gets the warning string that is displayed with this window.
|
WindowFocusListener
|
getWindowFocusListeners
()
Returns an array of all the window focus listeners registered on this window.
|
WindowListener
|
getWindowListeners
()
Returns an array of all the window listeners registered on this window.
|
WindowStateListener
|
getWindowStateListeners
()
Returns an array of all the window state listeners registered on this window.
|
void
|
hide
()
Deprecated.
As of JDK version 1.5, replaced by
setVisible(boolean)
|
boolean
|
isActive
()
Returns whether this Window is active.
|
boolean
|
isAlwaysOnTop
()
Returns whether this window is an always-on-top window.
|
boolean
|
isAlwaysOnTopSupported
()
Returns whether the always-on-top mode is supported for this window.
|
boolean
|
isFocusableWindow
()
Returns whether this Window can become the focused Window, that is, whether this Window or any of its subcomponents can become the focus owner.
|
boolean
|
isFocusCycleRoot
()
Always returns true because all Windows must be roots of a focus traversal cycle.
|
boolean
|
isFocused
()
Returns whether this Window is focused.
|
boolean
|
isLocationByPlatform
()
Returns true if this Window will appear at the default location for the native windowing system the next time this Window is made visible.
|
boolean
|
isShowing
()
Checks if this Window is showing on screen.
|
void
|
pack
()
Causes this Window to be sized to fit the preferred size and layouts of its subcomponents.
|
boolean
|
postEvent
(
Event
Deprecated.
As of JDK version 1.1 replaced by dispatchEvent(AWTEvent).
|
protected void
|
processEvent
(
AWTEvent
Processes events on this window.
|
protected void
|
processWindowEvent
(
WindowEvent
Processes window events occurring on this window by dispatching them to any registered WindowListener objects.
|
protected void
|
processWindowFocusEvent
(
WindowEvent
Processes window focus event occuring on this window by dispatching them to any registered WindowFocusListener objects.
|
protected void
|
processWindowStateEvent
(
WindowEvent
Processes window state event occuring on this window by dispatching them to any registered WindowStateListener objects.
|
void
|
removeNotify
()
Makes this Container undisplayable by removing its connection to its native screen resource.
|
void
|
removeWindowFocusListener
(
WindowFocusListener
Removes the specified window focus listener so that it no longer receives window events from this window.
|
void
|
removeWindowListener
(
WindowListener
Removes the specified window listener so that it no longer receives window events from this window.
|
void
|
removeWindowStateListener
(
WindowStateListener
Removes the specified window state listener so that it no longer receives window events from this window.
|
void
|
reshape
(int x, int y, int width, int height)
Deprecated.
As of JDK version 1.1, replaced by setBounds(int, int, int, int).
|
void
|
setAlwaysOnTop
(boolean alwaysOnTop)
Sets whether this window should always be above other windows.
|
void
|
setBounds
(int x, int y, int width, int height)
Moves and resizes this component.
|
void
|
setBounds
(
Rectangle
Moves and resizes this component to conform to the new bounding rectangle r.
|
void
|
setCursor
(
Cursor
Set the cursor image to a specified cursor.
|
void
|
setFocusableWindowState
(boolean focusableWindowState)
Sets whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow.
|
void
|
setFocusCycleRoot
(boolean focusCycleRoot)
Does nothing because Windows must always be roots of a focus traversal cycle.
|
void
|
setLocationByPlatform
(boolean locationByPlatform)
Sets whether this Window should appear at the default location for the native windowing system or at the current location (returned by getLocation) the next time the Window is made visible.
|
void
|
setLocationRelativeTo
(
Component
Sets the location of the window relative to the specified component.
|
void
|
setMinimumSize
(
Dimension
Sets the minimum size of this window to a constant value.
|
void
|
setModalExclusionType
(
Dialog.ModalExclusionType
Specifies the modal exclusion type for this window.
|
void
|
setSize
(
Dimension
Resizes this component so that it has width d.width and height d.height.
|
void
|
setSize
(int width, int height)
Resizes this component so that it has width width and height height.
|
void
|
setVisible
(boolean b)
Shows or hides this Window depending on the value of parameter b.
|
void
|
show
()
Deprecated.
As of JDK version 1.5, replaced by
setVisible(boolean)
|
void
|
toBack
()
If this Window is visible, sends this Window to the back and may cause it to lose focus or activation if it is the focused or active Window.
|
void
|
toFront
()
If this Window is visible, brings this Window to the front and may make it the focused Window.
|
Methods inherited from class java.awt.
Container
|
add
,
add
,
add
,
add
,
add
,
addContainerListener
,
addImpl
,
applyComponentOrientation
,
areFocusTraversalKeysSet
,
countComponents
,
deliverEvent
,
doLayout
,
findComponentAt
,
findComponentAt
,
getAlignmentX
,
getAlignmentY
,
getComponent
,
getComponentAt
,
getComponentAt
,
getComponentCount
,
getComponents
,
getComponentZOrder
,
getContainerListeners
,
getFocusTraversalPolicy
,
getInsets
,
getLayout
,
getMaximumSize
,
getMinimumSize
,
getMousePosition
,
getPreferredSize
,
insets
,
invalidate
,
isAncestorOf
,
isFocusCycleRoot
,
isFocusTraversalPolicyProvider
,
isFocusTraversalPolicySet
,
layout
,
list
,
list
,
locate
,
minimumSize
,
paint
,
paintComponents
,
paramString
,
preferredSize
,
print
,
printComponents
,
processContainerEvent
,
remove
,
remove
,
removeAll
,
removeContainerListener
,
setComponentZOrder
,
setFocusTraversalKeys
,
setFocusTraversalPolicy
,
setFocusTraversalPolicyProvider
,
setFont
,
setLayout
,
transferFocusBackward
,
transferFocusDownCycle
,
update
,
validate
,
validateTree
|
Methods inherited from class java.awt.
Component
|
action
,
add
,
addComponentListener
,
addFocusListener
,
addHierarchyBoundsListener
,
addHierarchyListener
,
addInputMethodListener
,
addKeyListener
,
addMouseListener
,
addMouseMotionListener
,
addMouseWheelListener
,
bounds
,
checkImage
,
checkImage
,
coalesceEvents
,
contains
,
contains
,
createImage
,
createImage
,
createVolatileImage
,
createVolatileImage
,
disable
,
disableEvents
,
dispatchEvent
,
enable
,
enable
,
enableEvents
,
enableInputMethods
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
getBackground
,
getBaseline
,
getBaselineResizeBehavior
,
getBounds
,
getBounds
,
getColorModel
,
getComponentListeners
,
getComponentOrientation
,
getCursor
,
getDropTarget
,
getFocusListeners
,
getFocusTraversalKeysEnabled
,
getFont
,
getFontMetrics
,
getForeground
,
getGraphics
,
getHeight
,
getHierarchyBoundsListeners
,
getHierarchyListeners
,
getIgnoreRepaint
,
getInputMethodListeners
,
getInputMethodRequests
,
getKeyListeners
,
getLocation
,
getLocation
,
getLocationOnScreen
,
getMouseListeners
,
getMouseMotionListeners
,
getMousePosition
,
getMouseWheelListeners
,
getName
,
getParent
,
getPeer
,
getPropertyChangeListeners
,
getPropertyChangeListeners
,
getSize
,
getSize
,
getTreeLock
,
getWidth
,
getX
,
getY
,
gotFocus
,
handleEvent
,
hasFocus
,
imageUpdate
,
inside
,
isBackgroundSet
,
isCursorSet
,
isDisplayable
,
isDoubleBuffered
,
isEnabled
,
isFocusable
,
isFocusOwner
,
isFocusTraversable
,
isFontSet
,
isForegroundSet
,
isLightweight
,
isMaximumSizeSet
,
isMinimumSizeSet
,
isOpaque
,
isPreferredSizeSet
,
isValid
,
isVisible
,
keyDown
,
keyUp
,
list
,
list
,
list
,
location
,
lostFocus
,
mouseDown
,
mouseDrag
,
mouseEnter
,
mouseExit
,
mouseMove
,
mouseUp
,
move
,
nextFocus
,
paintAll
,
prepareImage
,
prepareImage
,
printAll
,
processComponentEvent
,
processFocusEvent
,
processHierarchyBoundsEvent
,
processHierarchyEvent
,
processInputMethodEvent
,
processKeyEvent
,
processMouseEvent
,
processMouseMotionEvent
,
processMouseWheelEvent
,
remove
,
removeComponentListener
,
removeFocusListener
,
removeHierarchyBoundsListener
,
removeHierarchyListener
,
removeInputMethodListener
,
removeKeyListener
,
removeMouseListener
,
removeMouseMotionListener
,
removeMouseWheelListener
,
removePropertyChangeListener
,
removePropertyChangeListener
,
repaint
,
repaint
,
repaint
,
repaint
,
requestFocus
,
requestFocus
,
requestFocusInWindow
,
requestFocusInWindow
,
resize
,
resize
,
setBackground
,
setComponentOrientation
,
setDropTarget
,
setEnabled
,
setFocusable
,
setFocusTraversalKeysEnabled
,
setForeground
,
setIgnoreRepaint
,
setLocale
,
setLocation
,
setLocation
,
setMaximumSize
,
setName
,
setPreferredSize
,
show
,
size
,
toString
,
transferFocus
,
transferFocusUpCycle
|
Constructor Detail
|
Window
public Window ( Frame owner)
-
Constructs a new invisible window with the specified Frame as its owner. The window will not be focusable unless its owner is showing on the screen.
If there is a security manager, this method first calls the security manager's checkTopLevelWindow method with this as its argument to determine whether or not the window must be displayed with a warning banner.
-
Parameters:
-
owner - the Frame to act as owner or null if this window has no owner
-
Throws:
-
IllegalArgumentException
- if the owner's GraphicsConfiguration is not from a screen device
-
IllegalArgumentException
- when when GraphicsEnvironment.isHeadless returns true
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
SecurityManager.checkTopLevelWindow(java.lang.Object)
,
isShowing()
Window
public Window ( Window owner)
-
Constructs a new invisible window with the specified Window as its owner. This window will not be focusable unless its nearest owning Frame or Dialog is showing on the screen.
If there is a security manager, this method first calls the security manager's checkTopLevelWindow method with this as its argument to determine whether or not the window must be displayed with a warning banner.
-
Parameters:
-
owner - the Window to act as owner or null if this window has no owner
-
Throws:
-
IllegalArgumentException
- if the owner's GraphicsConfiguration is not from a screen device
-
IllegalArgumentException
- when GraphicsEnvironment.isHeadless() returns true
-
Since:
-
1.2
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
SecurityManager.checkTopLevelWindow(java.lang.Object)
,
isShowing()
Window
public Window ( Window owner,
GraphicsConfiguration gc)
-
Constructs a new invisible window with the specified owner Window and a GraphicsConfiguration of a screen device. The Window will not be focusable unless its nearest owning Frame or Dialog is showing on the screen.
If there is a security manager, this method first calls the security manager's checkTopLevelWindow method with this as its argument to determine whether or not the window must be displayed with a warning banner.
-
Parameters:
-
owner - the window to act as owner or null if this window has no owner
-
gc - the GraphicsConfiguration of the target screen device; if gc is null, the system default GraphicsConfiguration is assumed
-
Throws:
-
IllegalArgumentException
- if gc is not from a screen device; this exception is always thrown when GraphicsEnvironment.isHeadless() returns true
-
Since:
-
1.3
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
SecurityManager.checkTopLevelWindow(java.lang.Object)
,
GraphicsConfiguration.getBounds()
,
isShowing()
Method Detail
|
addNotify
public void addNotify ()
-
Makes this Window displayable by creating the connection to its native screen resource. This method is called internally by the toolkit and should not be called directly by programs.
-
-
Overrides:
-
addNotify
in class
Container
-
-
Since:
-
JDK1.0
-
See Also:
-
Component.isDisplayable()
,
Container.removeNotify()
removeNotify
public void removeNotify ()
-
Makes this Container undisplayable by removing its connection to its native screen resource. Making a container undisplayable will cause all of its children to be made undisplayable. This method is called by the toolkit internally and should not be called directly by programs.
-
-
Overrides:
-
removeNotify
in class
Container
-
-
See Also:
-
Component.isDisplayable()
,
Container.addNotify()
pack
public void pack ()
-
Causes this Window to be sized to fit the preferred size and layouts of its subcomponents. If the window and/or its owner are not yet displayable, both are made displayable before calculating the preferred size. The Window will be validated after the preferredSize is calculated.
-
-
-
See Also:
-
Component.isDisplayable()
setMinimumSize
public void setMinimumSize ( Dimension minimumSize)
-
Sets the minimum size of this window to a constant value. Subsequent calls to getMinimumSize will always return this value. If current window's size is less than minimumSize the size of the window is automatically enlarged to honor the minimum size.
If the setSize or setBounds methods are called afterwards with a width or height less than that specified by setMinimumSize the window is automatically enlarged to honor the minimumSize value. Setting the minimum size to null restores the default behavior.
Resizing operation may be restricted if the user tries to resize window below the minimumSize value. This behaviour is platform-dependent.
-
-
Overrides:
-
setMinimumSize
in class
Component
-
-
Parameters:
-
minimumSize - the new minimum size of this window
-
Since:
-
1.6
-
See Also:
-
Component.setMinimumSize(java.awt.Dimension)
,
Container.getMinimumSize()
,
Component.isMinimumSizeSet()
,
setSize(Dimension)
setSize
public void setSize ( Dimension d)
-
Resizes this component so that it has width d.width and height d.height.
The d.width and d.height values are automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize.
-
-
Overrides:
-
setSize
in class
Component
-
-
Parameters:
-
d - the dimension specifying the new size of this component
-
Since:
-
1.6
-
See Also:
-
Component.getSize()
,
setBounds(int, int, int, int)
,
setMinimumSize(java.awt.Dimension)
setSize
public void setSize (int width,
int height)
-
Resizes this component so that it has width width and height height.
The width and height values are automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize.
-
-
Overrides:
-
setSize
in class
Component
-
-
Parameters:
-
width - the new width of this component in pixels
-
height - the new height of this component in pixels
-
Since:
-
1.6
-
See Also:
-
Component.getSize()
,
setBounds(int, int, int, int)
,
setMinimumSize(java.awt.Dimension)
reshape
@Deprecated
public void reshape (int x,
int y,
int width,
int height)
-
Deprecated.
As of JDK version 1.1, replaced by setBounds(int, int, int, int).
-
-
Overrides:
-
reshape
in class
Component
-
setVisible
public void setVisible (boolean b)
-
Shows or hides this Window depending on the value of parameter b.
-
-
Overrides:
-
setVisible
in class
Component
-
-
Parameters:
-
b - if true, makes the Window visible, otherwise hides the Window. If the Window and/or its owner are not yet displayable, both are made displayable. The Window will be validated prior to being made visible. If the is already visible, this will bring the Window to the front.
If false, hides this Window, its subcomponents, and all of its owned children. The Window and its subcomponents can be made visible again with a call to setVisible(true).
-
See Also:
-
Component.isDisplayable()
,
Component.setVisible(boolean)
,
toFront()
,
dispose()
show
@Deprecated
public void show ()
-
Deprecated.
As of JDK version 1.5, replaced by
setVisible(boolean)
.
-
Makes the Window visible. If the Window and/or its owner are not yet displayable, both are made displayable. The Window will be validated prior to being made visible. If the Window is already visible, this will bring the Window to the front.
-
-
Overrides:
-
show
in class
Component
-
-
See Also:
-
Component.isDisplayable()
,
toFront()
hide
@Deprecated
public void hide ()
-
Deprecated.
As of JDK version 1.5, replaced by
setVisible(boolean)
.
-
Hide this Window, its subcomponents, and all of its owned children. The Window and its subcomponents can be made visible again with a call to show.
A Window object is a top-level window with no borders and no menubar. The default layout for a window is BorderLayout.
-
-
Overrides:
-
hide
in class
Component
-
-
See Also:
-
show()
,
dispose()
dispose
public void dispose ()
-
Releases all of the native screen resources used by this Window, its subcomponents, and all of its owned children. That is, the resources for these Components will be destroyed, any memory they consume will be returned to the OS, and they will be marked as undisplayable.
The Window and its subcomponents can be made displayable again by rebuilding the native resources with a subsequent call to pack or show. The states of the recreated Window and its subcomponents will be identical to the states of these objects at the point where the Window was disposed (not accounting for additional modifications between those actions).
Note
: When the last displayable window within the Java virtual machine (VM) is disposed of, the VM may terminate. See
AWT Threading Issues
for more information.
-
-
-
See Also:
-
Component.isDisplayable()
,
pack()
,
show()
toFront
public void toFront ()
-
If this Window is visible, brings this Window to the front and may make it the focused Window.
Places this Window at the top of the stacking order and shows it in front of any other Windows in this VM. No action will take place if this Window is not visible. Some platforms do not allow Windows which own other Windows to appear on top of those owned Windows. Some platforms may not permit this VM to place its Windows above windows of native applications, or Windows of other VMs. This permission may depend on whether a Window in this VM is already focused. Every attempt will be made to move this Window as high as possible in the stacking order; however, developers should not assume that this method will move this Window above all other windows in every situation.
Because of variations in native windowing systems, no guarantees about changes to the focused and active Windows can be made. Developers must never assume that this Window is the focused or active Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event. On platforms where the top-most window is the focused window, this method will
probably
focus this Window, if it is not already focused. On platforms where the stacking order does not typically affect the focused window, this method will
probably
leave the focused and active Windows unchanged.
If this method causes this Window to be focused, and this Window is a Frame or a Dialog, it will also become activated. If this Window is focused, but it is not a Frame or a Dialog, then the first Frame or Dialog that is an owner of this Window will be activated.
If this window is blocked by modal dialog, then the blocking dialog is brought to the front and remains above the blocked window.
-
-
-
See Also:
-
toBack()
toBack
public void toBack ()
-
If this Window is visible, sends this Window to the back and may cause it to lose focus or activation if it is the focused or active Window.
Places this Window at the bottom of the stacking order and shows it behind any other Windows in this VM. No action will take place is this Window is not visible. Some platforms do not allow Windows which are owned by other Windows to appear below their owners. Every attempt will be made to move this Window as low as possible in the stacking order; however, developers should not assume that this method will move this Window below all other windows in every situation.
Because of variations in native windowing systems, no guarantees about changes to the focused and active Windows can be made. Developers must never assume that this Window is no longer the focused or active Window until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED event. On platforms where the top-most window is the focused window, this method will
probably
cause this Window to lose focus. In that case, the next highest, focusable Window in this VM will receive focus. On platforms where the stacking order does not typically affect the focused window, this method will
probably
leave the focused and active Windows unchanged.
-
-
-
See Also:
-
toFront()
getToolkit
public ToolkitA window must have either a frame, dialog, or another window defined as its owner when it's constructed. getToolkit ()
-
Returns the toolkit of this frame.
-
-
Overrides:
-
getToolkit
In a multi-screen environment, you can create a Window on a different screen device by constructing the Window with
Window(Window, GraphicsConfiguration)
in class
Component
-
-
Returns:
-
the toolkit of this window.
-
See Also:
-
Toolkit
,
Toolkit.getDefaultToolkit()
,
Component.getToolkit()
getWarningString
public final StringgetWarningString ()
-
Gets the warning string that is displayed with this window. If this window is insecure, the warning string is displayed somewhere in the visible area of the window. A window is insecure if there is a security manager, and the security manager's checkTopLevelWindow method returns false when this window is passed to it as an argument.
If the window is secure, then getWarningString returns null. If the window is insecure, this method checks for the system property awt.appletWarning and returns the string value of that property.
-
-
-
Returns:
-
the warning string for this window.
-
See Also:
-
SecurityManager.checkTopLevelWindow(java.lang.Object)
getLocale
public LocalegetLocale ()
-
Gets the Locale object that is associated with this window, if the locale has been set. If no locale has been set, then the default locale is returned.
-
-
Overrides:
-
getLocale
in class
Component
-
-
Returns:
-
the locale that is set for this window.
-
Since:
-
JDK1.1
-
See Also:
-
Locale
getInputContext
public InputContextgetInputContext ()
-
Gets the input context for this window. A window always has an input context, which is shared by subcomponents unless they create and set their own.
-
-
Overrides:
-
getInputContext
in class
Component
-
-
Returns:
-
the input context used by this component; null if no context can be determined
-
Since:
-
1.2
-
See Also:
-
Component.getInputContext()
setCursor
public void setCursor ( Cursor cursor)
-
Set the cursor image to a specified cursor.
The method may have no visual effect if the Java platform implementation and/or the native system do not support changing the mouse cursor shape.
-
-
Overrides:
-
setCursor
in class
Component
-
-
Parameters:
-
cursor - One of the constants defined by the Cursor class. If this parameter is null then the cursor for this window will be set to the type Cursor.DEFAULT_CURSOR.
-
Since:
-
JDK1.1
-
See Also:
-
Component.getCursor()
,
Cursor
getOwner
public WindowgetOwner ()
-
Returns the owner of this window.
-
-
-
Since:
-
1.2
getOwnedWindows
public Window[] getOwnedWindows ()
-
Return an array containing all the windows this window currently owns.
-
-
-
Since:
-
1.2
setModalExclusionType
public void setModalExclusionType ( Dialog.ModalExclusionType exclusionType)
-
Specifies the modal exclusion type for this window. If a window is modal excluded, it is not blocked by some modal dialogs. See
Dialog.ModalExclusionType
for possible modal exclusion types.
If the given type is not supported, NO_EXCLUDE is used.
Note: changing the modal exclusion type for a visible window may have no effect until it is hidden and then shown again.
-
-
-
Parameters:
-
exclusionType - the modal exclusion type for this window; a null value is equivivalent to
NO_EXCLUDE
-
Throws:
-
SecurityException
- if the calling thread does not have permission to set the modal exclusion property to the window with the given exclusionType
-
Since:
-
1.6
-
See Also:
-
Dialog.ModalExclusionType
,
getModalExclusionType()
,
Toolkit.isModalExclusionTypeSupported(java.awt.Dialog.ModalExclusionType)
getModalExclusionType
public Dialog.ModalExclusionTypegetModalExclusionType ()
-
Returns the modal exclusion type of this window.
-
-
-
Returns:
-
the modal exclusion type of this window
-
Since:
-
1.6
-
See Also:
-
Dialog.ModalExclusionType
,
setModalExclusionType(java.awt.Dialog.ModalExclusionType)
addWindowListener
public void addWindowListener ( WindowListener l)
-
Adds the specified window listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window listener
-
See Also:
-
removeWindowListener(java.awt.event.WindowListener)
,
getWindowListeners()
addWindowStateListener
public void addWindowStateListener ( WindowStateListener l)
-
Adds the specified window state listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window state listener
-
Since:
-
1.4
-
See Also:
-
removeWindowStateListener(java.awt.event.WindowStateListener)
,
getWindowStateListeners()
addWindowFocusListener
public void addWindowFocusListener ( WindowFocusListener l)
-
Adds the specified window focus listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window focus listener
-
See Also:
-
removeWindowFocusListener(java.awt.event.WindowFocusListener)
,
getWindowFocusListeners()
removeWindowListener
public void removeWindowListener ( WindowListener l)
-
Removes the specified window listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window listener
-
See Also:
-
addWindowListener(java.awt.event.WindowListener)
,
getWindowListeners()
removeWindowStateListener
public void removeWindowStateListener ( WindowStateListener l)
-
Removes the specified window state listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window state listener
-
Since:
-
1.4
-
See Also:
-
addWindowStateListener(java.awt.event.WindowStateListener)
,
getWindowStateListeners()
removeWindowFocusListener
public void removeWindowFocusListener ( WindowFocusListener l)
-
Removes the specified window focus listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window focus listener
-
See Also:
-
addWindowFocusListener(java.awt.event.WindowFocusListener)
,
getWindowFocusListeners()
getWindowListeners
public WindowListener[] getWindowListeners ()
-
Returns an array of all the window listeners registered on this window.
-
-
-
Returns:
-
all of this window's WindowListeners or an empty array if no window listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addWindowListener(java.awt.event.WindowListener)
,
removeWindowListener(java.awt.event.WindowListener)
getWindowFocusListeners
public WindowFocusListener[] getWindowFocusListeners ()
-
Returns an array of all the window focus listeners registered on this window.
-
-
-
Returns:
-
all of this window's WindowFocusListeners or an empty array if no window focus listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addWindowFocusListener(java.awt.event.WindowFocusListener)
,
removeWindowFocusListener(java.awt.event.WindowFocusListener)
getWindowStateListeners
public WindowStateListener[] getWindowStateListeners ()
-
Returns an array of all the window state listeners registered on this window.
-
-
-
Returns:
-
all of this window's WindowStateListeners or an empty array if no window state listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addWindowStateListener(java.awt.event.WindowStateListener)
,
removeWindowStateListener(java.awt.event.WindowStateListener)
getListeners
public <T extends EventListener> T[] getListeners ( Class<T> listenerType)
-
Returns an array of all the objects currently registered as FooListeners upon this Window. FooListeners are registered using the addFooListener method.
You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a Window w for its window listeners with the following code:
WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));
If no such listeners exist, this method returns an empty array.
-
-
Overrides:
-
getListeners
in class
Container
-
-
Parameters:
-
listenerType - the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener
-
Returns:
-
an array of all objects registered as FooListeners on this window, or an empty array if no such listeners have been added
-
Throws:
-
ClassCastException
- if listenerType doesn't specify a class or interface that implements java.util.EventListener
-
Since:
-
1.3
-
See Also:
-
getWindowListeners()
processEvent
protected void processEvent ( AWTEvent e)
-
Processes events on this window. If the event is an WindowEvent, it invokes the processWindowEvent method, else it invokes its superclass's processEvent.
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
Overrides:
-
processEvent
in class
Container
-
-
Parameters:
-
e - the event
-
See Also:
-
Component.processComponentEvent(java.awt.event.ComponentEvent)
,
Component.processFocusEvent(java.awt.event.FocusEvent)
,
Component.processKeyEvent(java.awt.event.KeyEvent)
,
Component.processMouseEvent(java.awt.event.MouseEvent)
,
Component.processMouseMotionEvent(java.awt.event.MouseEvent)
,
Component.processInputMethodEvent(java.awt.event.InputMethodEvent)
,
Component.processHierarchyEvent(java.awt.event.HierarchyEvent)
,
Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent)
processWindowEvent
protected void processWindowEvent ( WindowEvent e)
-
Processes window events occurring on this window by dispatching them to any registered WindowListener objects. NOTE: This method will not be called unless window events are enabled for this component; this happens when one of the following occurs:
-
A WindowListener object is registered via addWindowListener
-
Window events are enabled via enableEvents
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
-
Parameters:
-
e - the window event
-
See Also:
-
Component.enableEvents(long)
processWindowFocusEvent
protected void processWindowFocusEvent ( WindowEvent e)
-
Processes window focus event occuring on this window by dispatching them to any registered WindowFocusListener objects. NOTE: this method will not be called unless window focus events are enabled for this window. This happens when one of the following occurs:
-
a WindowFocusListener is registered via addWindowFocusListener
-
Window focus events are enabled via enableEvents
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
-
Parameters:
-
e - the window focus event
-
See Also:
-
Component.enableEvents(long)
processWindowStateEvent
protected void processWindowStateEvent ( WindowEvent e)
-
Processes window state event occuring on this window by dispatching them to any registered WindowStateListener objects. NOTE: this method will not be called unless window state events are enabled for this window. This happens when one of the following occurs:
-
a WindowStateListener is registered via addWindowStateListener
-
window state events are enabled via enableEvents
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
-
Parameters:
-
e - the window state event
-
Since:
-
1.4
-
See Also:
-
Component.enableEvents(long)
setAlwaysOnTop
public final void setAlwaysOnTop (boolean alwaysOnTop)
throws SecurityException
-
Sets whether this window should always be above other windows. If there are multiple always-on-top windows, their relative order is unspecified and platform dependent.
If some other window is already always-on-top then the relative order between these windows is unspecified (depends on platform). No window can be brought to be over the always-on-top window except maybe another always-on-top window.
All windows owned by an always-on-top window inherit this state and automatically become always-on-top. If a window ceases to be always-on-top, the windows that it owns will no longer be always-on-top. When an always-on-top window is sent
toBack
, its always-on-top state is set to false.
When this method is called on a window with a value of true, and the window is visible and the platform supports always-on-top for this window, the window is immediately brought forward, "sticking" it in the top-most position. If the window isn`t currently visible, this method sets the always-on-top state to true but does not bring the window forward. When the window is later shown, it will be always-on-top.
When this method is called on a window with a value of false the always-on-top state is set to normal. The window remains in the top-most position but it`s z-order can be changed as for any other window. Calling this method with a value of false on a window that has a normal state has no effect. Setting the always-on-top state to false has no effect on the relative z-order of the windows if there are no other always-on-top windows.
Note
: some platforms might not support always-on-top windows. To detect if always-on-top windows are supported by the current platform, use
Toolkit.isAlwaysOnTopSupported()
and
isAlwaysOnTopSupported()
.
If always-on-top mode isn't supported by the toolkit or for this window, calling this method has no effect.
The GraphicsConfiguration object is one of the GraphicsConfiguration objects of the target screen device.
If a SecurityManager is installed, the calling thread must be granted the AWTPermission "setWindowAlwaysOnTop" in order to set the value of this property. If this permission is not granted, this method will throw a SecurityException, and the current value of the property will be left unchanged.
In a virtual device multi-screen environment in which the desktop area could span multiple physical screen devices, the bounds of all configurations are relative to the virtual device coordinate system. The origin of the virtual-coordinate system is at the upper left-hand corner of the primary physical screen. Depending on the location of the primary screen in the virtual device, negative coordinates are possible, as shown in the following figure.
-
-
-
Parameters:
-
alwaysOnTop - true if the window should always be above other windows
-
Throws:
-
SecurityException
- if the calling thread does not have permission to set the value of always-on-top property
-
Since:
-
1.5
-
See Also:
-
isAlwaysOnTop()
,
toFront()
,
toBack()
,
AWTPermission
,
isAlwaysOnTopSupported()
,
Toolkit.isAlwaysOnTopSupported()
isAlwaysOnTopSupported
public boolean isAlwaysOnTopSupported ()
-
Returns whether the always-on-top mode is supported for this window. Some platforms may not support always-on-top windows, some may support only some kinds of top-level windows; for example, a platform may not support always-on-top modal dialogs.
-
-
-
Returns:
-
true, if the always-on-top mode is supported by the toolkit and for this window, false, if always-on-top mode is not supported for this window or toolkit doesn't support always-on-top windows.
-
Since:
-
1.6
-
See Also:
-
setAlwaysOnTop(boolean)
,
Toolkit.isAlwaysOnTopSupported()
isAlwaysOnTop
public final boolean isAlwaysOnTop ()
-
Returns whether this window is an always-on-top window.
In such an environment, when calling setLocation, you must pass a virtual coordinate to this method. Similarly, calling getLocationOnScreen on a Window returns virtual device coordinates. Call the getBounds method of a GraphicsConfiguration to find its origin in the virtual coordinate system.
-
-
-
Returns:
-
true, if the window is in always-on-top state, false otherwise
-
Since:
-
1.5
-
See Also:
-
setAlwaysOnTop(boolean)
getFocusOwner
The following code sets the location of a Window at (10, 10) relative to the origin of the physical screen of the corresponding GraphicsConfiguration. If the bounds of the GraphicsConfiguration is not taken into account, the Window location would be set at (10, 10) relative to the virtual-coordinate system and would appear on the primary physical screen, which might be different from the physical screen of the specified GraphicsConfiguration.
public ComponentgetFocusOwner ()
Window w = new Window(Window owner, GraphicsConfiguration gc);
Rectangle bounds = gc.getBounds();
w.setLocation(10 + bounds.x, 10 + bounds.y);
-
Returns the child Component of this Window that has focus if this Window is focused; returns null otherwise.
-
-
-
Returns:
-
the child Component with focus, or null if this Window is not focused
-
See Also:
-
getMostRecentFocusOwner()
,
isFocused()
getMostRecentFocusOwner
public ComponentgetMostRecentFocusOwner ()
-
Returns the child Component of this Window that will receive the focus when this Window is focused. If this Window is currently focused, this method returns the same Component as getFocusOwner(). If this Window is not focused, then the child Component that most recently requested focus will be returned. If no child Component has ever requested focus, and this is a focusable Window, then this Window's initial focusable Component is returned. If no child Component has ever requested focus, and this is a non-focusable Window, null is returned.
Note: the location and size of top-level windows (including Windows, Frames, and Dialogs) are under the control of the desktop's window management system. Calls to setLocation, setSize, and setBounds are requests (not directives) which are forwarded to the window management system. Every effort will be made to honor such requests. However, in some cases the window management system may ignore such requests, or modify the requested geometry in order to place and size the Window in a way that more closely matches the desktop settings. Due to the asynchronous nature of native event handling, the results returned by getBounds, getLocation, getLocationOnScreen, and getSize might not reflect the actual geometry of the Window on screen until the last request has been processed. During the processing of subsequent requests these values might change accordingly while the window management system fulfills the requests.
-
-
-
Returns:
-
the child Component that will receive focus when this Window is focused
-
Since:
-
1.4
-
See Also:
-
getFocusOwner()
,
isFocused()
,
isFocusableWindow()
isActive
public boolean isActive ()
-
Returns whether this Window is active. Only a Frame or a Dialog may be active. The native windowing system may denote the active Window or its children with special decorations, such as a highlighted title bar. The active Window is always either the focused Window, or the first Frame or Dialog that is an owner of the focused Window.
Windows are capable of generating the following WindowEvents: WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus.
-
-
-
Returns:
-
whether this is the active Window.
-
Since:
-
1.4
-
See Also:
-
isFocused()
isFocused
public boolean isFocused ()
-
Returns whether this Window is focused. If there exists a focus owner, the focused Window is the Window that is, or contains, that focus owner. If there is no focus owner, then no Window is focused.
If the focused Window is a Frame or a Dialog it is also the active Window. Otherwise, the active Window is the first Frame or Dialog that is an owner of the focused Window.
-
-
-
Returns:
-
whether this is the focused Window.
-
Since:
-
1.4
JDK1.0
-
See Also:
-
isActive()
WindowEvent
,
addWindowListener(java.awt.event.WindowListener)
getFocusTraversalKeys
public Set, BorderLayout< AWTKeyStroke, Serialized Form> getFocusTraversalKeys (int id)
-
Gets a focus traversal key for this Window. (See setFocusTraversalKeys for a full description of each key.)
If the traversal key has not been explicitly set for this Window, then this Window's parent's traversal key is returned. If the traversal key has not been explicitly set for any of this Window's ancestors, then the current KeyboardFocusManager's default traversal key is returned.
-
-
Overrides:
-
getFocusTraversalKeys
in class
Container
-
-
Parameters:
-
id - one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
-
Returns:
-
the AWTKeyStroke for the specified key
-
Throws:
-
IllegalArgumentException
- if id is not one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
-
Since:
-
1.4
-
See Also:
-
Container.setFocusTraversalKeys(int, java.util.Set extends java.awt.AWTKeyStroke>
)
,
KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS
,
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS
,
KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
,
KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
setFocusCycleRoot
public final void setFocusCycleRoot (boolean focusCycleRoot)
-
Does nothing because Windows must always be roots of a focus traversal cycle. The passed-in value is ignored.
-
-
Overrides:
-
setFocusCycleRoot
in class
Container
-
-
Parameters:
-
focusCycleRoot - this value is ignored
-
Since:
-
1.4
-
See Also:
-
isFocusCycleRoot()
,
Container.setFocusTraversalPolicy(java.awt.FocusTraversalPolicy)
,
Container.getFocusTraversalPolicy()
isFocusCycleRoot
public final boolean isFocusCycleRoot ()
-
Always returns true because all Windows must be roots of a focus traversal cycle.
-
-
Overrides:
-
isFocusCycleRoot
in class
Container
-
-
Returns:
-
true
-
Since:
-
1.4
-
See Also:
-
setFocusCycleRoot(boolean)
,
Container.setFocusTraversalPolicy(java.awt.FocusTraversalPolicy)
,
Container.getFocusTraversalPolicy()
getFocusCycleRootAncestor
public final ContainergetFocusCycleRootAncestor ()
-
Always returns null because Windows have no ancestors; they represent the top of the Component hierarchy.
-
-
Overrides:
-
getFocusCycleRootAncestor
in class
Component
-
-
Returns:
-
null
-
Since:
-
1.4
-
See Also:
-
Container.isFocusCycleRoot()
isFocusableWindow
public final boolean isFocusableWindow ()
-
Returns whether this Window can become the focused Window, that is, whether this Window or any of its subcomponents can become the focus owner. For a Frame or Dialog to be focusable, its focusable Window state must be set to true. For a Window which is not a Frame or Dialog to be focusable, its focusable Window state must be set to true, its nearest owning Frame or Dialog must be showing on the screen, and it must contain at least one Component in its focus traversal cycle. If any of these conditions is not met, then neither this Window nor any of its subcomponents can become the focus owner.
-
-
-
Returns:
-
true if this Window can be the focused Window; false otherwise
-
Since:
-
1.4
-
See Also:
-
getFocusableWindowState()
,
setFocusableWindowState(boolean)
,
isShowing()
,
Component.isFocusable()
getFocusableWindowState
public boolean getFocusableWindowState ()
-
Returns whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow. If this method returns false, then isFocusableWindow will return false as well. If this method returns true, then isFocusableWindow may return true or false depending upon the other requirements which must be met in order for a Window to be focusable.
By default, all Windows have a focusable Window state of true.
-
-
-
Returns:
-
whether this Window can be the focused Window
-
Since:
-
1.4
-
See Also:
-
isFocusableWindow()
,
setFocusableWindowState(boolean)
,
isShowing()
,
Component.setFocusable(boolean)
setFocusableWindowState
public void setFocusableWindowState (boolean focusableWindowState)
-
Sets whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow. If this Window's focusable Window state is set to false, then isFocusableWindow will return false. If this Window's focusable Window state is set to true, then isFocusableWindow may return true or false depending upon the other requirements which must be met in order for a Window to be focusable.
Setting a Window's focusability state to false is the standard mechanism for an application to identify to the AWT a Window which will be used as a floating palette or toolbar, and thus should be a non-focusable Window. Setting the focusability state on a visible Window can have a delayed effect on some platforms the actual change may happen only when the Window becomes hidden and then visible again. To ensure consistent behavior across platforms, set the Window's focusable state when the WIndow is invisible and then show it.
-
-
-
Parameters:
-
focusableWindowState - whether this Window can be the focused Window
-
Since:
-
1.4
-
See Also:
-
isFocusableWindow()
,
getFocusableWindowState()
,
isShowing()
,
Component.setFocusable(boolean)
addPropertyChangeListener
public void addPropertyChangeListener ( PropertyChangeListener listener)
-
Adds a PropertyChangeListener to the listener list. The listener is registered for all bound properties of this class, including the following:
-
this Window's font ("font")
-
this Window's background color ("background")
-
this Window's foreground color ("foreground")
-
this Window's focusability ("focusable")
-
this Window's focus traversal keys enabled state ("focusTraversalKeysEnabled")
-
this Window's Set of FORWARD_TRAVERSAL_KEYS ("forwardFocusTraversalKeys")
-
this Window's Set of BACKWARD_TRAVERSAL_KEYS ("backwardFocusTraversalKeys")
-
this Window's Set of UP_CYCLE_TRAVERSAL_KEYS ("upCycleFocusTraversalKeys")
-
this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS ("downCycleFocusTraversalKeys")
-
this Window's focus traversal policy ("focusTraversalPolicy")
-
this Window's focusable Window state ("focusableWindowState")
-
this Window's always-on-top state("alwaysOnTop")
Note that if this Window is inheriting a bound property, then no event will be fired in response to a change in the inherited property.
If listener is null, no exception is thrown and no action is performed.
-
-
Overrides:
-
addPropertyChangeListener
in class
Container
-
-
Parameters:
-
listener - the PropertyChangeListener to be added
-
See Also:
-
Component.removePropertyChangeListener(java.beans.PropertyChangeListener)
,
addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
addPropertyChangeListener
public void addPropertyChangeListener ( String propertyName,
PropertyChangeListener listener)
-
Adds a PropertyChangeListener to the listener list for a specific property. The specified property may be user-defined, or one of the following:
-
this Window's font ("font")
-
this Window's background color ("background")
-
this Window's foreground color ("foreground")
-
this Window's focusability ("focusable")
-
this Window's focus traversal keys enabled state ("focusTraversalKeysEnabled")
-
this Window's Set of FORWARD_TRAVERSAL_KEYS ("forwardFocusTraversalKeys")
-
this Window's Set of BACKWARD_TRAVERSAL_KEYS ("backwardFocusTraversalKeys")
-
this Window's Set of UP_CYCLE_TRAVERSAL_KEYS ("upCycleFocusTraversalKeys")
-
this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS ("downCycleFocusTraversalKeys")
-
this Window's focus traversal policy ("focusTraversalPolicy")
-
this Window's focusable Window state ("focusableWindowState")
-
this Window's always-on-top state("alwaysOnTop")
Note that if this Window is inheriting a bound property, then no event will be fired in response to a change in the inherited property.
If listener is null, no exception is thrown and no action is performed.
-
-
Overrides:
-
addPropertyChangeListener
in class
Container
-
-
Parameters:
-
propertyName - one of the property names listed above
-
listener - the PropertyChangeListener to be added
-
See Also:
-
addPropertyChangeListener(java.beans.PropertyChangeListener)
,
Component.removePropertyChangeListener(java.beans.PropertyChangeListener)
postEvent
@Deprecated
public boolean postEvent ( Event e)
-
Deprecated.
As of JDK version 1.1 replaced by dispatchEvent(AWTEvent).
-
-
Specified by:
-
postEvent
in interface
MenuContainer
-
Overrides:
-
postEvent
in class
Component
-
isShowing
public boolean isShowing ()
-
Checks if this Window is showing on screen.
-
-
Overrides:
-
isShowing
in class
Component
-
-
Returns:
-
true if the component is showing, false otherwise
-
See Also:
-
Component.setVisible(boolean)
applyResourceBundle
@Deprecated
public void applyResourceBundle ( ResourceBundle rb)
-
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
.
-
-
applyResourceBundle
@Deprecated
public void applyResourceBundle ( String rbName)
-
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
.
-
-
getAccessibleContext
public AccessibleContextgetAccessibleContext ()
-
Gets the AccessibleContext associated with this Window. For windows, the AccessibleContext takes the form of an AccessibleAWTWindow. A new AccessibleAWTWindow instance is created if necessary.
-
-
Specified by:
-
getAccessibleContext
in interface
Accessible
-
Overrides:
-
getAccessibleContext
in class
Component
-
-
Returns:
-
an AccessibleAWTWindow that serves as the AccessibleContext of this Window
getGraphicsConfiguration
public GraphicsConfigurationgetGraphicsConfiguration ()
-
This method returns the GraphicsConfiguration used by this Window.
-
-
Overrides:
-
getGraphicsConfiguration
in class
Component
-
-
Returns:
-
the GraphicsConfiguration used by this Component or null
setLocationRelativeTo
public void setLocationRelativeTo ( Component c)
-
Sets the location of the window relative to the specified component.
If the component is not currently showing, or c is null, the window is placed at the center of the screen. The center point can be determined with
GraphicsEnvironment.getCenterPoint
If the bottom of the component is offscreen, the window is placed to the side of the Component that is closest to the center of the screen. So if the Component is on the right part of the screen, the Window is placed to its left, and visa versa.
-
-
-
Parameters:
-
c - the component in relation to which the window's location is determined
-
Since:
-
1.4
-
See Also:
-
GraphicsEnvironment.getCenterPoint()
createBufferStrategy
public void createBufferStrategy (int numBuffers)
-
Creates a new strategy for multi-buffering on this component. Multi-buffering is useful for rendering performance. This method attempts to create the best strategy available with the number of buffers supplied. It will always create a BufferStrategy with that number of buffers. A page-flipping strategy is attempted first, then a blitting strategy using accelerated buffers. Finally, an unaccelerated blitting strategy is used.
Each time this method is called, the existing buffer strategy for this component is discarded.
-
-
-
Parameters:
-
numBuffers - number of buffers to create
-
Throws:
-
IllegalArgumentException
- if numBuffers is less than 1.
-
IllegalStateException
- if the component is not displayable
-
Since:
-
1.4
-
See Also:
-
Component.isDisplayable()
,
getBufferStrategy()
createBufferStrategy
public void createBufferStrategy (int numBuffers,
BufferCapabilities caps)
throws AWTException
-
Creates a new strategy for multi-buffering on this component with the required buffer capabilities. This is useful, for example, if only accelerated memory or page flipping is desired (as specified by the buffer capabilities).
Each time this method is called, the existing buffer strategy for this component is discarded.
-
-
-
Parameters:
-
numBuffers - number of buffers to create, including the front buffer
-
caps - the required capabilities for creating the buffer strategy; cannot be null
-
Throws:
-
AWTException
- if the capabilities supplied could not be supported or met; this may happen, for example, if there is not enough accelerated memory currently available, or if page flipping is specified but not possible.
-
IllegalArgumentException
- if numBuffers is less than 1, or if caps is null
-
Since:
-
1.4
-
See Also:
-
getBufferStrategy()
getBufferStrategy
public BufferStrategygetBufferStrategy ()
-
Returns the BufferStrategy used by this component. This method will return null if a BufferStrategy has not yet been created or has been disposed.
-
-
-
Returns:
-
the buffer strategy used by this component
-
Since:
-
1.4
-
See Also:
-
createBufferStrategy(int)
setLocationByPlatform
public void setLocationByPlatform (boolean locationByPlatform)
-
Sets whether this Window should appear at the default location for the native windowing system or at the current location (returned by getLocation) the next time the Window is made visible. This behavior resembles a native window shown without programmatically setting its location. Most windowing systems cascade windows if their locations are not explicitly set. The actual location is determined once the window is shown on the screen.
This behavior can also be enabled by setting the System Property "java.awt.Window.locationByPlatform" to "true", though calls to this method take precedence.
Calls to setVisible, setLocation and setBounds after calling setLocationByPlatform clear this property of the Window.
For example, after the following code is executed:
setLocationByPlatform(true);
setVisible(true);
boolean flag = isLocationByPlatform();
The window will be shown at platform's default location and flag will be false.
In the following sample:
setLocationByPlatform(true);
setLocation(10, 10);
boolean flag = isLocationByPlatform();
setVisible(true);
The window will be shown at (10, 10) and flag will be false.
-
-
-
Parameters:
-
locationByPlatform - true if this Window should appear at the default location, false if at the current location
-
Throws:
-
IllegalComponentStateException - if the window is showing on screen and locationByPlatform is true.
-
Since:
-
1.5
-
See Also:
-
Component.setLocation(int, int)
,
isShowing()
,
setVisible(boolean)
,
isLocationByPlatform()
,
System.getProperty(String)
isLocationByPlatform
public boolean isLocationByPlatform ()
-
Returns true if this Window will appear at the default location for the native windowing system the next time this Window is made visible. This method always returns false if the Window is showing on the screen.
-
-
-
Returns:
-
whether this Window will appear at the default location
-
Since:
-
1.5
-
See Also:
-
setLocationByPlatform(boolean)
,
isShowing()
setBounds
public void setBounds (int x,
int y,
int width,
int height)
-
Moves and resizes this component. The new location of the top-left corner is specified by x and y, and the new size is specified by width and height.
The width or height values are automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize.
-
-
Overrides:
-
setBounds
in class
Component
-
-
Parameters:
-
x - the new
x
-coordinate of this component
-
y - the new
y
-coordinate of this component
-
width - the new width of this component
-
height - the new height of this component
-
Since:
-
1.6
-
See Also:
-
Component.getBounds()
,
Component.setLocation(int, int)
,
Component.setLocation(Point)
,
setSize(int, int)
,
setSize(Dimension)
,
setMinimumSize(java.awt.Dimension)
,
setLocationByPlatform(boolean)
,
isLocationByPlatform()
setBounds
public void setBounds ( Rectangle r)
-
Moves and resizes this component to conform to the new bounding rectangle r. This component's new position is specified by r.x and r.y, and its new size is specified by r.width and r.height
The r.width or r.height values will be automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize.
-
-
Overrides:
-
setBounds
in class
Component
-
-
Parameters:
-
r - the new bounding rectangle for this component
-
Since:
-
1.6
-
See Also:
-
Component.getBounds()
,
Component.setLocation(int, int)
,
Component.setLocation(Point)
,
setSize(int, int)
,
setSize(Dimension)
,
setMinimumSize(java.awt.Dimension)
,
setLocationByPlatform(boolean)
,
isLocationByPlatform()
Nested Class Summary
|
protected class
|
Window.AccessibleAWTWindow
This class implements accessibility support for the Window class.
|
Nested classes/interfaces inherited from class java.awt.
Container
|
Container.AccessibleAWTContainer
|
Field Summary
|
Fields inherited from interface java.awt.image.
ImageObserver
|
ABORT
,
ALLBITS
,
ERROR
,
FRAMEBITS
,
HEIGHT
,
PROPERTIES
,
SOMEBITS
,
WIDTH
|
Constructor Summary
|
Window
(
Frame
Constructs a new invisible window with the specified Frame as its owner.
|
Window
(
Window
Constructs a new invisible window with the specified Window as its owner.
|
Window
(
Window
owner,
GraphicsConfiguration
Constructs a new invisible window with the specified window as its owner and a GraphicsConfiguration of a screen device.
|
Method Summary
|
void
|
addNotify
()
Makes this Window displayable by creating the connection to its native screen resource.
|
void
|
addPropertyChangeListener
(
PropertyChangeListener
Adds a PropertyChangeListener to the listener list.
|
void
|
addPropertyChangeListener
(
String
propertyName,
PropertyChangeListener
Adds a PropertyChangeListener to the listener list for a specific property.
|
void
|
addWindowFocusListener
(
WindowFocusListener
Adds the specified window focus listener to receive window events from this window.
|
void
|
addWindowListener
(
WindowListener
Adds the specified window listener to receive window events from this window.
|
void
|
addWindowStateListener
(
WindowStateListener
Adds the specified window state listener to receive window events from this window.
|
void
|
applyResourceBundle
(
ResourceBundle
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
|
void
|
applyResourceBundle
(
String
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
|
void
|
createBufferStrategy
(int numBuffers)
Creates a new strategy for multi-buffering on this component.
|
void
|
createBufferStrategy
(int numBuffers,
BufferCapabilities
Creates a new strategy for multi-buffering on this component with the required buffer capabilities.
|
void
|
dispose
()
Releases all of the native screen resources used by this Window, its subcomponents, and all of its owned children.
|
protected void
|
finalize
()
Disposes of the input methods and context, and removes this Window from the GUI hierarchy.
|
AccessibleContext
|
getAccessibleContext
()
Gets the AccessibleContext associated with this Window.
|
BufferStrategy
|
getBufferStrategy
()
|
boolean
|
getFocusableWindowState
()
Returns whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow.
|
Container
|
getFocusCycleRootAncestor
()
Always returns null because Windows have no ancestors; they represent the top of the Component hierarchy.
|
Component
|
getFocusOwner
()
Returns the child Component of this Window that has focus if this Window is focused; returns null otherwise.
|
Set
<
AWTKeyStroke
|
getFocusTraversalKeys
(int id)
Gets a focus traversal key for this Window.
|
GraphicsConfiguration
|
getGraphicsConfiguration
()
This method returns the GraphicsConfiguration used by this Window.
|
InputContext
|
getInputContext
()
Gets the input context for this window.
|
|
getListeners
(
Class
<T> listenerType)
Returns an array of all the objects currently registered as FooListeners upon this Window.
|
Locale
|
getLocale
()
Gets the Locale object that is associated with this window, if the locale has been set.
|
Component
|
getMostRecentFocusOwner
()
Returns the child Component of this Window that will receive the focus when this Window is focused.
|
Window
|
getOwnedWindows
()
Return an array containing all the windows this window currently owns.
|
Window
|
getOwner
()
Returns the owner of this window.
|
Toolkit
|
getToolkit
()
Returns the toolkit of this frame.
|
String
|
getWarningString
()
Gets the warning string that is displayed with this window.
|
WindowFocusListener
|
getWindowFocusListeners
()
Returns an array of all the window focus listeners registered on this window.
|
WindowListener
|
getWindowListeners
()
Returns an array of all the window listeners registered on this window.
|
WindowStateListener
|
getWindowStateListeners
()
Returns an array of all the window state listeners registered on this window.
|
void
|
hide
()
Deprecated.
As of JDK 5, replaced by
Component.setVisible(boolean)
|
boolean
|
isActive
()
Returns whether this Window is active.
|
boolean
|
isAlwaysOnTop
()
Returns whether this window is an always-on-top window.
|
boolean
|
isFocusableWindow
()
Returns whether this Window can become the focused Window, that is, whether this Window or any of its subcomponents can become the focus owner.
|
boolean
|
isFocusCycleRoot
()
Always returns true because all Windows must be roots of a focus traversal cycle.
|
boolean
|
isFocused
()
Returns whether this Window is focused.
|
boolean
|
isLocationByPlatform
()
Returns true if this Window will appear at the default location for the native windowing system the next time this Window is made visible.
|
boolean
|
isShowing
()
Checks if this Window is showing on screen.
|
void
|
pack
()
Causes this Window to be sized to fit the preferred size and layouts of its subcomponents.
|
boolean
|
postEvent
(
Event
Deprecated.
As of JDK version 1.1 replaced by dispatchEvent(AWTEvent).
|
protected void
|
processEvent
(
AWTEvent
Processes events on this window.
|
protected void
|
processWindowEvent
(
WindowEvent
Processes window events occurring on this window by dispatching them to any registered WindowListener objects.
|
protected void
|
processWindowFocusEvent
(
WindowEvent
Processes window focus event occuring on this window by dispatching them to any registered WindowFocusListener objects.
|
protected void
|
processWindowStateEvent
(
WindowEvent
Processes window state event occuring on this window by dispatching them to any registered WindowStateListener objects.
|
void
|
removeWindowFocusListener
(
WindowFocusListener
Removes the specified window focus listener so that it no longer receives window events from this window.
|
void
|
removeWindowListener
(
WindowListener
Removes the specified window listener so that it no longer receives window events from this window.
|
void
|
removeWindowStateListener
(
WindowStateListener
Removes the specified window state listener so that it no longer receives window events from this window.
|
void
|
setAlwaysOnTop
(boolean alwaysOnTop)
Changes the always-on-top window state.
|
void
|
setBounds
(int x, int y, int width, int height)
Moves and resizes this component.
|
void
|
setCursor
(
Cursor
Set the cursor image to a specified cursor.
|
void
|
setFocusableWindowState
(boolean focusableWindowState)
Sets whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow.
|
void
|
setFocusCycleRoot
(boolean focusCycleRoot)
Does nothing because Windows must always be roots of a focus traversal cycle.
|
void
|
setLocationByPlatform
(boolean locationByPlatform)
Sets whether this Window should appear at the default location for the native windowing system or at the current location (returned by getLocation) the next time the Window is made visible.
|
void
|
setLocationRelativeTo
(
Component
Sets the location of the window relative to the specified component.
|
void
|
show
()
Deprecated.
As of JDK 5, replaced by
Component.setVisible(boolean)
|
void
|
toBack
()
If this Window is visible, sends this Window to the back and may cause it to lose focus or activation if it is the focused or active Window.
|
void
|
toFront
()
If this Window is visible, brings this Window to the front and may make it the focused Window.
|
Methods inherited from class java.awt.
Container
|
add
,
add
,
add
,
add
,
add
,
addContainerListener
,
addImpl
,
applyComponentOrientation
,
areFocusTraversalKeysSet
,
countComponents
,
deliverEvent
,
doLayout
,
findComponentAt
,
findComponentAt
,
getAlignmentX
,
getAlignmentY
,
getComponent
,
getComponentAt
,
getComponentAt
,
getComponentCount
,
getComponents
,
getComponentZOrder
,
getContainerListeners
,
getFocusTraversalPolicy
,
getInsets
,
getLayout
,
getMaximumSize
,
getMinimumSize
,
getMousePosition
,
getPreferredSize
,
insets
,
invalidate
,
isAncestorOf
,
isFocusCycleRoot
,
isFocusTraversalPolicyProvider
,
isFocusTraversalPolicySet
,
layout
,
list
,
list
,
locate
,
minimumSize
,
paint
,
paintComponents
,
paramString
,
preferredSize
,
print
,
printComponents
,
processContainerEvent
,
remove
,
remove
,
removeAll
,
removeContainerListener
,
removeNotify
,
setComponentZOrder
,
setFocusTraversalKeys
,
setFocusTraversalPolicy
,
setFocusTraversalPolicyProvider
,
setFont
,
setLayout
,
transferFocusBackward
,
transferFocusDownCycle
,
update
,
validate
,
validateTree
|
Methods inherited from class java.awt.
Component
|
action
,
add
,
addComponentListener
,
addFocusListener
,
addHierarchyBoundsListener
,
addHierarchyListener
,
addInputMethodListener
,
addKeyListener
,
addMouseListener
,
addMouseMotionListener
,
addMouseWheelListener
,
bounds
,
checkImage
,
checkImage
,
coalesceEvents
,
contains
,
contains
,
createImage
,
createImage
,
createVolatileImage
,
createVolatileImage
,
disable
,
disableEvents
,
dispatchEvent
,
enable
,
enable
,
enableEvents
,
enableInputMethods
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
getBackground
,
getBounds
,
getBounds
,
getColorModel
,
getComponentListeners
,
getComponentOrientation
,
getCursor
,
getDropTarget
,
getFocusListeners
,
getFocusTraversalKeysEnabled
,
getFont
,
getFontMetrics
,
getForeground
,
getGraphics
,
getHeight
,
getHierarchyBoundsListeners
,
getHierarchyListeners
,
getIgnoreRepaint
,
getInputMethodListeners
,
getInputMethodRequests
,
getKeyListeners
,
getLocation
,
getLocation
,
getLocationOnScreen
,
getMouseListeners
,
getMouseMotionListeners
,
getMousePosition
,
getMouseWheelListeners
,
getName
,
getParent
,
getPeer
,
getPropertyChangeListeners
,
getPropertyChangeListeners
,
getSize
,
getSize
,
getTreeLock
,
getWidth
,
getX
,
getY
,
gotFocus
,
handleEvent
,
hasFocus
,
imageUpdate
,
inside
,
isBackgroundSet
,
isCursorSet
,
isDisplayable
,
isDoubleBuffered
,
isEnabled
,
isFocusable
,
isFocusOwner
,
isFocusTraversable
,
isFontSet
,
isForegroundSet
,
isLightweight
,
isMaximumSizeSet
,
isMinimumSizeSet
,
isOpaque
,
isPreferredSizeSet
,
isValid
,
isVisible
,
keyDown
,
keyUp
,
list
,
list
,
list
,
location
,
lostFocus
,
mouseDown
,
mouseDrag
,
mouseEnter
,
mouseExit
,
mouseMove
,
mouseUp
,
move
,
nextFocus
,
paintAll
,
prepareImage
,
prepareImage
,
printAll
,
processComponentEvent
,
processFocusEvent
,
processHierarchyBoundsEvent
,
processHierarchyEvent
,
processInputMethodEvent
,
processKeyEvent
,
processMouseEvent
,
processMouseMotionEvent
,
processMouseWheelEvent
,
remove
,
removeComponentListener
,
removeFocusListener
,
removeHierarchyBoundsListener
,
removeHierarchyListener
,
removeInputMethodListener
,
removeKeyListener
,
removeMouseListener
,
removeMouseMotionListener
,
removeMouseWheelListener
,
removePropertyChangeListener
,
removePropertyChangeListener
,
repaint
,
repaint
,
repaint
,
repaint
,
requestFocus
,
requestFocus
,
requestFocusInWindow
,
requestFocusInWindow
,
reshape
,
resize
,
resize
,
setBackground
,
setBounds
,
setComponentOrientation
,
setDropTarget
,
setEnabled
,
setFocusable
,
setFocusTraversalKeysEnabled
,
setForeground
,
setIgnoreRepaint
,
setLocale
,
setLocation
,
setLocation
,
setMaximumSize
,
setMinimumSize
,
setName
,
setPreferredSize
,
setSize
,
setSize
,
setVisible
,
show
,
size
,
toString
,
transferFocus
,
transferFocusUpCycle
|
Constructor Detail
|
Window
public Window ( Frame owner)
-
Constructs a new invisible window with the specified Frame as its owner. The Window will not be focusable unless its owner is showing on the screen.
If there is a security manager, this method first calls the security manager's checkTopLevelWindow method with this as its argument to determine whether or not the window must be displayed with a warning banner.
-
Parameters:
-
owner - the Frame to act as owner
-
Throws:
-
IllegalArgumentException
- if the owner's GraphicsConfiguration is not from a screen device
-
IllegalArgumentException
- if owner is null; this exception is always thrown when GraphicsEnvironment.isHeadless returns true
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
SecurityManager.checkTopLevelWindow(java.lang.Object)
,
isShowing()
Window
public Window ( Window owner)
-
Constructs a new invisible window with the specified Window as its owner. The Window will not be focusable unless its nearest owning Frame or Dialog is showing on the screen.
If there is a security manager, this method first calls the security manager's checkTopLevelWindow method with this as its argument to determine whether or not the window must be displayed with a warning banner.
-
Parameters:
-
owner - the Window to act as owner
-
Throws:
-
IllegalArgumentException
- if the owner's GraphicsConfiguration is not from a screen device
-
IllegalArgumentException
- if owner is null. This exception is always thrown when GraphicsEnvironment.isHeadless() returns true.
-
Since:
-
1.2
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
SecurityManager.checkTopLevelWindow(java.lang.Object)
,
isShowing()
Window
public Window ( Window owner,
GraphicsConfiguration gc)
-
Constructs a new invisible window with the specified window as its owner and a GraphicsConfiguration of a screen device. The Window will not be focusable unless its nearest owning Frame or Dialog is showing on the screen.
If there is a security manager, this method first calls the security manager's checkTopLevelWindow method with this as its argument to determine whether or not the window must be displayed with a warning banner.
-
Parameters:
-
owner - the window to act as owner
-
gc - the GraphicsConfiguration of the target screen device; if gc is null, the system default GraphicsConfiguration is assumed
-
Throws:
-
IllegalArgumentException
- if owner is null
-
IllegalArgumentException
- if gc is not from a screen device; this exception is always thrown when GraphicsEnvironment.isHeadless returns true
-
Since:
-
1.3
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
SecurityManager.checkTopLevelWindow(java.lang.Object)
,
GraphicsConfiguration.getBounds()
,
isShowing()
Method Detail
|
finalize
protected void finalize ()
throws Throwable
-
Disposes of the input methods and context, and removes this Window from the GUI hierarchy. Subclasses that override this method should call super.finalize().
-
-
Overrides:
-
finalize
in class
Object
-
-
Throws:
-
Throwable
- the Exception raised by this method
addNotify
public void addNotify ()
-
Makes this Window displayable by creating the connection to its native screen resource. This method is called internally by the toolkit and should not be called directly by programs.
-
-
Overrides:
-
addNotify
in class
Container
-
-
Since:
-
JDK1.0
-
See Also:
-
Component.isDisplayable()
,
Container.removeNotify()
pack
public void pack ()
-
Causes this Window to be sized to fit the preferred size and layouts of its subcomponents. If the window and/or its owner are not yet displayable, both are made displayable before calculating the preferred size. The Window will be validated after the preferredSize is calculated.
-
-
-
See Also:
-
Component.isDisplayable()
show
@Deprecated
public void show ()
-
Deprecated.
As of JDK 5, replaced by
Component.setVisible(boolean)
.
-
-
Overrides:
-
show
in class
Component
-
hide
@Deprecated
public void hide ()
-
Deprecated.
As of JDK 5, replaced by
Component.setVisible(boolean)
.
-
-
Overrides:
-
hide
in class
Component
-
dispose
public void dispose ()
-
Releases all of the native screen resources used by this Window, its subcomponents, and all of its owned children. That is, the resources for these Components will be destroyed, any memory they consume will be returned to the OS, and they will be marked as undisplayable.
The Window and its subcomponents can be made displayable again by rebuilding the native resources with a subsequent call to pack or show. The states of the recreated Window and its subcomponents will be identical to the states of these objects at the point where the Window was disposed (not accounting for additional modifications between those actions).
Note
: When the last displayable window within the Java virtual machine (VM) is disposed of, the VM may terminate. See
AWT Threading Issues
for more information.
-
-
-
See Also:
-
Component.isDisplayable()
,
pack()
,
show()
toFront
public void toFront ()
-
If this Window is visible, brings this Window to the front and may make it the focused Window.
Places this Window at the top of the stacking order and shows it in front of any other Windows in this VM. No action will take place if this Window is not visible. Some platforms do not allow Windows which own other Windows to appear on top of those owned Windows. Some platforms may not permit this VM to place its Windows above windows of native applications, or Windows of other VMs. This permission may depend on whether a Window in this VM is already focused. Every attempt will be made to move this Window as high as possible in the stacking order; however, developers should not assume that this method will move this Window above all other windows in every situation.
Because of variations in native windowing systems, no guarantees about changes to the focused and active Windows can be made. Developers must never assume that this Window is the focused or active Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event. On platforms where the top-most window is the focused window, this method will
probably
focus this Window, if it is not already focused. On platforms where the stacking order does not typically affect the focused window, this method will
probably
leave the focused and active Windows unchanged.
If this method causes this Window to be focused, and this Window is a Frame or a Dialog, it will also become activated. If this Window is focused, but it is not a Frame or a Dialog, then the first Frame or Dialog that is an owner of this Window will be activated.
-
-
-
See Also:
-
toBack()
toBack
public void toBack ()
-
If this Window is visible, sends this Window to the back and may cause it to lose focus or activation if it is the focused or active Window.
Places this Window at the bottom of the stacking order and shows it behind any other Windows in this VM. No action will take place is this Window is not visible. Some platforms do not allow Windows which are owned by other Windows to appear below their owners. Every attempt will be made to move this Window as low as possible in the stacking order; however, developers should not assume that this method will move this Window below all other windows in every situation.
Because of variations in native windowing systems, no guarantees about changes to the focused and active Windows can be made. Developers must never assume that this Window is no longer the focused or active Window until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED event. On platforms where the top-most window is the focused window, this method will
probably
cause this Window to lose focus. In that case, the next highest, focusable Window in this VM will receive focus. On platforms where the stacking order does not typically affect the focused window, this method will
probably
leave the focused and active Windows unchanged.
-
-
-
See Also:
-
toFront()
getToolkit
public ToolkitgetToolkit ()
-
Returns the toolkit of this frame.
-
-
Overrides:
-
getToolkit
in class
Component
-
-
Returns:
-
the toolkit of this window.
-
See Also:
-
Toolkit
,
Toolkit.getDefaultToolkit()
,
Component.getToolkit()
getWarningString
public final StringgetWarningString ()
-
Gets the warning string that is displayed with this window. If this window is insecure, the warning string is displayed somewhere in the visible area of the window. A window is insecure if there is a security manager, and the security manager's checkTopLevelWindow method returns false when this window is passed to it as an argument.
If the window is secure, then getWarningString returns null. If the window is insecure, this method checks for the system property awt.appletWarning and returns the string value of that property.
-
-
-
Returns:
-
the warning string for this window.
-
See Also:
-
SecurityManager.checkTopLevelWindow(java.lang.Object)
getLocale
public LocalegetLocale ()
-
Gets the Locale object that is associated with this window, if the locale has been set. If no locale has been set, then the default locale is returned.
-
-
Overrides:
-
getLocale
in class
Component
-
-
Returns:
-
the locale that is set for this window.
-
Since:
-
JDK1.1
-
See Also:
-
Locale
getInputContext
public InputContextgetInputContext ()
-
Gets the input context for this window. A window always has an input context, which is shared by subcomponents unless they create and set their own.
-
-
Overrides:
-
getInputContext
in class
Component
-
-
Returns:
-
the input context used by this component; null if no context can be determined
-
Since:
-
1.2
-
See Also:
-
Component.getInputContext()
setCursor
public void setCursor ( Cursor cursor)
-
Set the cursor image to a specified cursor.
-
-
Overrides:
-
setCursor
in class
Component
-
-
Parameters:
-
cursor - One of the constants defined by the Cursor class. If this parameter is null then the cursor for this window will be set to the type Cursor.DEFAULT_CURSOR.
-
Since:
-
JDK1.1
-
See Also:
-
Component.getCursor()
,
Cursor
getOwner
public WindowgetOwner ()
-
Returns the owner of this window.
-
-
-
Since:
-
1.2
getOwnedWindows
public Window[] getOwnedWindows ()
-
Return an array containing all the windows this window currently owns.
-
-
-
Since:
-
1.2
addWindowListener
public void addWindowListener ( WindowListener l)
-
Adds the specified window listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window listener
-
See Also:
-
removeWindowListener(java.awt.event.WindowListener)
,
getWindowListeners()
addWindowStateListener
public void addWindowStateListener ( WindowStateListener l)
-
Adds the specified window state listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window state listener
-
Since:
-
1.4
-
See Also:
-
removeWindowStateListener(java.awt.event.WindowStateListener)
,
getWindowStateListeners()
addWindowFocusListener
public void addWindowFocusListener ( WindowFocusListener l)
-
Adds the specified window focus listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window focus listener
-
See Also:
-
removeWindowFocusListener(java.awt.event.WindowFocusListener)
,
getWindowFocusListeners()
removeWindowListener
public void removeWindowListener ( WindowListener l)
-
Removes the specified window listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window listener
-
See Also:
-
addWindowListener(java.awt.event.WindowListener)
,
getWindowListeners()
removeWindowStateListener
public void removeWindowStateListener ( WindowStateListener l)
-
Removes the specified window state listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window state listener
-
Since:
-
1.4
-
See Also:
-
addWindowStateListener(java.awt.event.WindowStateListener)
,
getWindowStateListeners()
removeWindowFocusListener
public void removeWindowFocusListener ( WindowFocusListener l)
-
Removes the specified window focus listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
-
-
-
Parameters:
-
l - the window focus listener
-
See Also:
-
addWindowFocusListener(java.awt.event.WindowFocusListener)
,
getWindowFocusListeners()
getWindowListeners
public WindowListener[] getWindowListeners ()
-
Returns an array of all the window listeners registered on this window.
-
-
-
Returns:
-
all of this window's WindowListeners or an empty array if no window listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addWindowListener(java.awt.event.WindowListener)
,
removeWindowListener(java.awt.event.WindowListener)
getWindowFocusListeners
public WindowFocusListener[] getWindowFocusListeners ()
-
Returns an array of all the window focus listeners registered on this window.
-
-
-
Returns:
-
all of this window's WindowFocusListeners or an empty array if no window focus listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addWindowFocusListener(java.awt.event.WindowFocusListener)
,
removeWindowFocusListener(java.awt.event.WindowFocusListener)
getWindowStateListeners
public WindowStateListener[] getWindowStateListeners ()
-
Returns an array of all the window state listeners registered on this window.
-
-
-
Returns:
-
all of this window's WindowStateListeners or an empty array if no window state listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addWindowStateListener(java.awt.event.WindowStateListener)
,
removeWindowStateListener(java.awt.event.WindowStateListener)
getListeners
public <T extends EventListener> T[] getListeners ( Class<T> listenerType)
-
Returns an array of all the objects currently registered as FooListeners upon this Window. FooListeners are registered using the addFooListener method.
You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a Window w for its window listeners with the following code:
WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));
If no such listeners exist, this method returns an empty array.
-
-
Overrides:
-
getListeners
in class
Container
-
-
Parameters:
-
listenerType - the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener
-
Returns:
-
an array of all objects registered as FooListeners on this window, or an empty array if no such listeners have been added
-
Throws:
-
ClassCastException
- if listenerType doesn't specify a class or interface that implements java.util.EventListener
-
Since:
-
1.3
-
See Also:
-
getWindowListeners()
processEvent
protected void processEvent ( AWTEvent e)
-
Processes events on this window. If the event is an WindowEvent, it invokes the processWindowEvent method, else it invokes its superclass's processEvent.
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
Overrides:
-
processEvent
in class
Container
-
-
Parameters:
-
e - the event
-
See Also:
-
Component.processComponentEvent(java.awt.event.ComponentEvent)
,
Component.processFocusEvent(java.awt.event.FocusEvent)
,
Component.processKeyEvent(java.awt.event.KeyEvent)
,
Component.processMouseEvent(java.awt.event.MouseEvent)
,
Component.processMouseMotionEvent(java.awt.event.MouseEvent)
,
Component.processInputMethodEvent(java.awt.event.InputMethodEvent)
,
Component.processHierarchyEvent(java.awt.event.HierarchyEvent)
,
Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent)
processWindowEvent
protected void processWindowEvent ( WindowEvent e)
-
Processes window events occurring on this window by dispatching them to any registered WindowListener objects. NOTE: This method will not be called unless window events are enabled for this component; this happens when one of the following occurs:
-
A WindowListener object is registered via addWindowListener
-
Window events are enabled via enableEvents
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
-
Parameters:
-
e - the window event
-
See Also:
-
Component.enableEvents(long)
processWindowFocusEvent
protected void processWindowFocusEvent ( WindowEvent e)
-
Processes window focus event occuring on this window by dispatching them to any registered WindowFocusListener objects. NOTE: this method will not be called unless window focus events are enabled for this window. This happens when one of the following occurs:
-
a WindowFocusListener is registered via addWindowFocusListener
-
Window focus events are enabled via enableEvents
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
-
Parameters:
-
e - the window focus event
-
See Also:
-
Component.enableEvents(long)
processWindowStateEvent
protected void processWindowStateEvent ( WindowEvent e)
-
Processes window state event occuring on this window by dispatching them to any registered WindowStateListener objects. NOTE: this method will not be called unless window state events are enabled for this window. This happens when one of the following occurs:
-
a WindowStateListener is registered via addWindowStateListener
-
window state events are enabled via enableEvents
Note that if the event parameter is null the behavior is unspecified and may result in an exception.
-
-
-
Parameters:
-
e - the window state event
-
Since:
-
1.4
-
See Also:
-
Component.enableEvents(long)
setAlwaysOnTop
public final void setAlwaysOnTop (boolean alwaysOnTop)
throws SecurityException
-
Changes the always-on-top window state. An always-on-top window is a window that stays above all other windows except maybe other always-on-top windows. If there are several always-on-top windows the order in which they stay relative to each other is not specified and is platform dependent.
If some other window already is always-on-top then the relative order between these windows is unspecified (depends on platform). No window can be brought to be over always-on-top window except maybe another always-on-top window.
All owned windows of an always-on-top window automatically become always-on-top windows. If a window ceases to be always-on-top its owned windows cease to be always-on-top.
When an always-on-top window is sent
toBack
its always-on-top state is set to false.
This method makes the window always-on-top if alwaysOnTop is true. If the window is visible, this includes bringing window toFront, then "sticking" it to the top-most position. If the window is not visible it does nothing other than setting the always-on-top property. If later the window is shown, it will be always-on-top. If the Window is already always-on-top, this call does nothing.
If alwaysOnTop is false this method changes the state from always-on-top to normal. The window remains top-most but its z-order can be changed in the normal way as for any other window. Does nothing if this Window is not always-on-top. Has no effect on relative z-order of windows if there are no other always-on-top windows.
Note
: some platforms might not support always-on-top windows. There is no public API to detect if the platform supports always-on-top at runtime.
If a SecurityManager is installed, the calling thread must be granted the AWTPermission "setWindowAlwaysOnTop" in order to set the value of this property. If this permission is not granted, this method will throw a SecurityException, and the current value of the property will be left unchanged.
-
-
-
Parameters:
-
alwaysOnTop - new value of always-on-top state of the window
-
Throws:
-
SecurityException
- if the calling thread does not have permission to set the value of always-on-top property
-
Since:
-
1.5
-
See Also:
-
isAlwaysOnTop()
,
toFront()
,
toBack()
,
AWTPermission
isAlwaysOnTop
public final boolean isAlwaysOnTop ()
-
Returns whether this window is an always-on-top window.
-
-
-
Returns:
-
true, if the window is in always-on-top state, false otherwise
-
Since:
-
1.5
-
See Also:
-
setAlwaysOnTop(boolean)
getFocusOwner
public ComponentgetFocusOwner ()
-
Returns the child Component of this Window that has focus if this Window is focused; returns null otherwise.
-
-
-
Returns:
-
the child Component with focus, or null if this Window is not focused
-
See Also:
-
getMostRecentFocusOwner()
,
isFocused()
getMostRecentFocusOwner
public ComponentgetMostRecentFocusOwner ()
-
Returns the child Component of this Window that will receive the focus when this Window is focused. If this Window is currently focused, this method returns the same Component as getFocusOwner(). If this Window is not focused, then the child Component that most recently requested focus will be returned. If no child Component has ever requested focus, and this is a focusable Window, then this Window's initial focusable Component is returned. If no child Component has ever requested focus, and this is a non-focusable Window, null is returned.
-
-
-
Returns:
-
the child Component that will receive focus when this Window is focused
-
Since:
-
1.4
-
See Also:
-
getFocusOwner()
,
isFocused()
,
isFocusableWindow()
isActive
public boolean isActive ()
-
Returns whether this Window is active. Only a Frame or a Dialog may be active. The native windowing system may denote the active Window or its children with special decorations, such as a highlighted title bar. The active Window is always either the focused Window, or the first Frame or Dialog that is an owner of the focused Window.
-
-
-
Returns:
-
whether this is the active Window.
-
Since:
-
1.4
-
See Also:
-
isFocused()
isFocused
public boolean isFocused ()
-
Returns whether this Window is focused. If there exists a focus owner, the focused Window is the Window that is, or contains, that focus owner. If there is no focus owner, then no Window is focused.
If the focused Window is a Frame or a Dialog it is also the active Window. Otherwise, the active Window is the first Frame or Dialog that is an owner of the focused Window.
-
-
-
Returns:
-
whether this is the focused Window.
-
Since:
-
1.4
-
See Also:
-
isActive()
getFocusTraversalKeys
public Set< AWTKeyStroke> getFocusTraversalKeys (int id)
-
Gets a focus traversal key for this Window. (See setFocusTraversalKeys for a full description of each key.)
If the traversal key has not been explicitly set for this Window, then this Window's parent's traversal key is returned. If the traversal key has not been explicitly set for any of this Window's ancestors, then the current KeyboardFocusManager's default traversal key is returned.
-
-
Overrides:
-
getFocusTraversalKeys
in class
Container
-
-
Parameters:
-
id - one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
-
Returns:
-
the AWTKeyStroke for the specified key
-
Throws:
-
IllegalArgumentException
- if id is not one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
-
Since:
-
1.4
-
See Also:
-
Container.setFocusTraversalKeys(int, java.util.Set extends java.awt.AWTKeyStroke>
)
,
KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS
,
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS
,
KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
,
KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
setFocusCycleRoot
public final void setFocusCycleRoot (boolean focusCycleRoot)
-
Does nothing because Windows must always be roots of a focus traversal cycle. The passed-in value is ignored.
-
-
Overrides:
-
setFocusCycleRoot
in class
Container
-
-
Parameters:
-
focusCycleRoot - this value is ignored
-
Since:
-
1.4
-
See Also:
-
isFocusCycleRoot()
,
Container.setFocusTraversalPolicy(java.awt.FocusTraversalPolicy)
,
Container.getFocusTraversalPolicy()
isFocusCycleRoot
public final boolean isFocusCycleRoot ()
-
Always returns true because all Windows must be roots of a focus traversal cycle.
-
-
Overrides:
-
isFocusCycleRoot
in class
Container
-
-
Returns:
-
true
-
Since:
-
1.4
-
See Also:
-
setFocusCycleRoot(boolean)
,
Container.setFocusTraversalPolicy(java.awt.FocusTraversalPolicy)
,
Container.getFocusTraversalPolicy()
getFocusCycleRootAncestor
public final ContainergetFocusCycleRootAncestor ()
-
Always returns null because Windows have no ancestors; they represent the top of the Component hierarchy.
-
-
Overrides:
-
getFocusCycleRootAncestor
in class
Component
-
-
Returns:
-
null
-
Since:
-
1.4
-
See Also:
-
Container.isFocusCycleRoot()
isFocusableWindow
public final boolean isFocusableWindow ()
-
Returns whether this Window can become the focused Window, that is, whether this Window or any of its subcomponents can become the focus owner. For a Frame or Dialog to be focusable, its focusable Window state must be set to true. For a Window which is not a Frame or Dialog to be focusable, its focusable Window state must be set to true, its nearest owning Frame or Dialog must be showing on the screen, and it must contain at least one Component in its focus traversal cycle. If any of these conditions is not met, then neither this Window nor any of its subcomponents can become the focus owner.
-
-
-
Returns:
-
true if this Window can be the focused Window; false otherwise
-
Since:
-
1.4
-
See Also:
-
getFocusableWindowState()
,
setFocusableWindowState(boolean)
,
isShowing()
,
Component.isFocusable()
getFocusableWindowState
public boolean getFocusableWindowState ()
-
Returns whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow. If this method returns false, then isFocusableWindow will return false as well. If this method returns true, then isFocusableWindow may return true or false depending upon the other requirements which must be met in order for a Window to be focusable.
By default, all Windows have a focusable Window state of true.
-
-
-
Returns:
-
whether this Window can be the focused Window
-
Since:
-
1.4
-
See Also:
-
isFocusableWindow()
,
setFocusableWindowState(boolean)
,
isShowing()
,
Component.setFocusable(boolean)
setFocusableWindowState
public void setFocusableWindowState (boolean focusableWindowState)
-
Sets whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow. If this Window's focusable Window state is set to false, then isFocusableWindow will return false. If this Window's focusable Window state is set to true, then isFocusableWindow may return true or false depending upon the other requirements which must be met in order for a Window to be focusable.
Setting a Window's focusability state to false is the standard mechanism for an application to identify to the AWT a Window which will be used as a floating palette or toolbar, and thus should be a non-focusable Window. Setting the focusability state on a visible Window can have a delayed effect on some platforms the actual change may happen only when the Window becomes hidden and then visible again. To ensure consistent behavior across platforms, set the Window's focusable state when the WIndow is invisible and then show it.
-
-
-
Parameters:
-
focusableWindowState - whether this Window can be the focused Window
-
Since:
-
1.4
-
See Also:
-
isFocusableWindow()
,
getFocusableWindowState()
,
isShowing()
,
Component.setFocusable(boolean)
addPropertyChangeListener
public void addPropertyChangeListener ( PropertyChangeListener listener)
-
Adds a PropertyChangeListener to the listener list. The listener is registered for all bound properties of this class, including the following:
-
this Window's font ("font")
-
this Window's background color ("background")
-
this Window's foreground color ("foreground")
-
this Window's focusability ("focusable")
-
this Window's focus traversal keys enabled state ("focusTraversalKeysEnabled")
-
this Window's Set of FORWARD_TRAVERSAL_KEYS ("forwardFocusTraversalKeys")
-
this Window's Set of BACKWARD_TRAVERSAL_KEYS ("backwardFocusTraversalKeys")
-
this Window's Set of UP_CYCLE_TRAVERSAL_KEYS ("upCycleFocusTraversalKeys")
-
this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS ("downCycleFocusTraversalKeys")
-
this Window's focus traversal policy ("focusTraversalPolicy")
-
this Window's focusable Window state ("focusableWindowState")
-
this Window's always-on-top state("alwaysOnTop")
Note that if this Window is inheriting a bound property, then no event will be fired in response to a change in the inherited property.
If listener is null, no exception is thrown and no action is performed.
-
-
Overrides:
-
addPropertyChangeListener
in class
Container
-
-
Parameters:
-
listener - the PropertyChangeListener to be added
-
See Also:
-
Component.removePropertyChangeListener(java.beans.PropertyChangeListener)
,
addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
addPropertyChangeListener
public void addPropertyChangeListener ( String propertyName,
PropertyChangeListener listener)
-
Adds a PropertyChangeListener to the listener list for a specific property. The specified property may be user-defined, or one of the following:
-
this Window's font ("font")
-
this Window's background color ("background")
-
this Window's foreground color ("foreground")
-
this Window's focusability ("focusable")
-
this Window's focus traversal keys enabled state ("focusTraversalKeysEnabled")
-
this Window's Set of FORWARD_TRAVERSAL_KEYS ("forwardFocusTraversalKeys")
-
this Window's Set of BACKWARD_TRAVERSAL_KEYS ("backwardFocusTraversalKeys")
-
this Window's Set of UP_CYCLE_TRAVERSAL_KEYS ("upCycleFocusTraversalKeys")
-
this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS ("downCycleFocusTraversalKeys")
-
this Window's focus traversal policy ("focusTraversalPolicy")
-
this Window's focusable Window state ("focusableWindowState")
-
this Window's always-on-top state("alwaysOnTop")
Note that if this Window is inheriting a bound property, then no event will be fired in response to a change in the inherited property.
If listener is null, no exception is thrown and no action is performed.
-
-
Overrides:
-
addPropertyChangeListener
in class
Container
-
-
Parameters:
-
propertyName - one of the property names listed above
-
listener - the PropertyChangeListener to be added
-
See Also:
-
addPropertyChangeListener(java.beans.PropertyChangeListener)
,
Component.removePropertyChangeListener(java.beans.PropertyChangeListener)
postEvent
@Deprecated
public boolean postEvent ( Event e)
-
Deprecated.
As of JDK version 1.1 replaced by dispatchEvent(AWTEvent).
-
-
Specified by:
-
postEvent
in interface
MenuContainer
-
Overrides:
-
postEvent
in class
Component
-
isShowing
public boolean isShowing ()
-
Checks if this Window is showing on screen.
-
-
Overrides:
-
isShowing
in class
Component
-
-
Returns:
-
true if the component is showing, false otherwise
-
See Also:
-
Component.setVisible(boolean)
applyResourceBundle
@Deprecated
public void applyResourceBundle ( ResourceBundle rb)
-
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
.
-
-
applyResourceBundle
@Deprecated
public void applyResourceBundle ( String rbName)
-
Deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation
.
-
-
getAccessibleContext
public AccessibleContextgetAccessibleContext ()
-
Gets the AccessibleContext associated with this Window. For windows, the AccessibleContext takes the form of an AccessibleAWTWindow. A new AccessibleAWTWindow instance is created if necessary.
-
-
Specified by:
-
getAccessibleContext
in interface
Accessible
-
Overrides:
-
getAccessibleContext
in class
Component
-
-
Returns:
-
an AccessibleAWTWindow that serves as the AccessibleContext of this Window
getGraphicsConfiguration
public GraphicsConfigurationgetGraphicsConfiguration ()
-
This method returns the GraphicsConfiguration used by this Window.
-
-
Overrides:
-
getGraphicsConfiguration
in class
Component
-
-
Returns:
-
the GraphicsConfiguration used by this Component or null
setLocationRelativeTo
public void setLocationRelativeTo ( Component c)
-
Sets the location of the window relative to the specified component. If the component is not currently showing, or c is null, the window is centered on the screen. If the bottom of the component is offscreen, the window is placed to the side of the Component that is closest to the center of the screen. So if the Component is on the right part of the screen, the Window is placed to its left, and visa versa.
-
-
-
Parameters:
-
c - the component in relation to which the window's location is determined
-
Since:
-
1.4
createBufferStrategy
public void createBufferStrategy (int numBuffers)
-
Creates a new strategy for multi-buffering on this component. Multi-buffering is useful for rendering performance. This method attempts to create the best strategy available with the number of buffers supplied. It will always create a BufferStrategy with that number of buffers. A page-flipping strategy is attempted first, then a blitting strategy using accelerated buffers. Finally, an unaccelerated blitting strategy is used.
Each time this method is called, the existing buffer strategy for this component is discarded.
-
-
-
Parameters:
-
numBuffers - number of buffers to create
-
Throws:
-
IllegalArgumentException
- if numBuffers is less than 1.
-
IllegalStateException
- if the component is not displayable
-
Since:
-
1.4
-
See Also:
-
Component.isDisplayable()
,
getBufferStrategy()
createBufferStrategy
public void createBufferStrategy (int numBuffers,
BufferCapabilities caps)
throws AWTException
-
Creates a new strategy for multi-buffering on this component with the required buffer capabilities. This is useful, for example, if only accelerated memory or page flipping is desired (as specified by the buffer capabilities).
Each time this method is called, the existing buffer strategy for this component is discarded.
-
-
-
Parameters:
-
numBuffers - number of buffers to create, including the front buffer
-
caps - the required capabilities for creating the buffer strategy; cannot be null
-
Throws:
-
AWTException
- if the capabilities supplied could not be supported or met; this may happen, for example, if there is not enough accelerated memory currently available, or if page flipping is specified but not possible.
-
IllegalArgumentException
- if numBuffers is less than 1, or if caps is null
-
Since:
-
1.4
-
See Also:
-
getBufferStrategy()
getBufferStrategy
public BufferStrategygetBufferStrategy ()
-
-
-
Returns:
-
the buffer strategy used by this component
-
Since:
-
1.4
-
See Also:
-
createBufferStrategy(int)
setLocationByPlatform
public void setLocationByPlatform (boolean locationByPlatform)
-
Sets whether this Window should appear at the default location for the native windowing system or at the current location (returned by getLocation) the next time the Window is made visible. This behavior resembles a native window shown without programmatically setting its location. Most windowing systems cascade windows if their locations are not explicitly set. The actual location is determined once the window is shown on the screen.
This behavior can also be enabled by setting the System Property "java.awt.Window.locationByPlatform" to "true", though calls to this method take precedence.
Calls to setVisible, setLocation and setBounds after calling setLocationByPlatform clear this property of the Window.
For example, after the following code is executed:
setLocationByPlatform(true);
setVisible(true);
boolean flag = isLocationByPlatform();
The window will be shown at platform's default location and flag will be false.
In the following sample:
setLocationByPlatform(true);
setLocation(10, 10);
boolean flag = isLocationByPlatform();
setVisible(true);
The window will be shown at (10, 10) and flag will be false.
-
-
-
Parameters:
-
locationByPlatform - true if this Window should appear at the default location, false if at the current location
-
Throws:
-
IllegalComponentStateException - if the window is showing on screen and locationByPlatform is true.
-
Since:
-
1.5
-
See Also:
-
Component.setLocation(int, int)
,
isShowing()
,
Component.setVisible(boolean)
,
isLocationByPlatform()
,
System.getProperty(String)
isLocationByPlatform
public boolean isLocationByPlatform ()
-
Returns true if this Window will appear at the default location for the native windowing system the next time this Window is made visible. This method always returns false if the Window is showing on the screen.
-
-
-
Returns:
-
whether this Window will appear at the default location
-
Since:
-
1.5
-
See Also:
-
setLocationByPlatform(boolean)
,
isShowing()
setBounds
public void setBounds (int x,
int y,
int width,
int height)
-
Description copied from class:
Component
-
Moves and resizes this component. The new location of the top-left corner is specified by x and y, and the new size is specified by width and height.
-
-
Overrides:
-
setBounds
in class
Component
-
-
Parameters:
-
x - the new
x
-coordinate of this component
-
y - the new
y
-coordinate of this component
-
width - the new width of this component
-
height - the new height of this component
-
Since:
-
1.5
-
See Also:
-
setLocationByPlatform(boolean)
,
isLocationByPlatform()