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javax.swing
Class JWindow
java.lang.Object
java.awt.Component
java.awt.Container
java.awt.Window
javax.swing.JWindow
-
All Implemented Interfaces:
-
Accessible
,
ImageObserver
,
MenuContainer
,
RootPaneContainer
,
Serializable
-
public class
JWindow
-
extends
Window
-
implements
Accessible
,
RootPaneContainer
A JWindow is a container that can be displayed anywhere on the user's desktop. It does not have the title bar, window-management buttons, or other trimmings associated with a JFrame, but it is still a "first-class citizen" of the user's desktop, and can exist anywhere on it.
The JWindow component contains a JRootPane as its only child. The contentPane should be the parent of any children of the JWindow.
As a conveniance add and its variants, remove and setLayout have been overridden to forward to the contentPane as necessary. This means you can write:
From the older java.awt.Window object you would normally do something like this:
window.add(child);
And the child will
However, using JWindow you would code:
window.getContentPane().add(child);
The same is true of setting LayoutManagers, removing components, listing children, etc. All these methods should normally
be
added
sent
to the
contentPane.
contentPane instead of the JWindow itself.
The contentPane will always be non-null. Attempting to set it to null will cause the JWindow to throw an exception. The default contentPane will have a BorderLayout manager set on it.
Refer to
RootPaneContainer
for details on adding, removing and setting the LayoutManager of a JWindow.
Please see the
JRootPane
documentation for a complete description of the contentPane, glassPane, and layeredPane components.
In a multi-screen environment, you can create a JWindow on a different screen device. See
Window
for more information.
For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the
JWindow key assignments
.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans
TM
has been added to the java.beans package. Please see
XMLEncoder
.
-
See Also:
-
JRootPane
Nested Class Summary
|
protected class |
JWindow.AccessibleJWindow
This class implements accessibility support for the JWindow class. |
Nested classes inherited from class java.awt.
Component
|
Component.AccessibleAWTComponent
,
Component.BltBufferStrategy
,
Component.FlipBufferStrategy
|
Field Summary
|
protected
AccessibleContext
|
accessibleContext
The accessible context property. |
protected
JRootPane
|
rootPane
The JRootPane instance that manages the contentPane and optional menuBar for this frame, as well as the glassPane. |
protected boolean |
rootPaneCheckingEnabled
If true then calls to add and setLayout will
cause an exception to
be
forwarded to the contentPane.
thrown.
|
Fields inherited from interface java.awt.image.
ImageObserver
|
ABORT
,
ALLBITS
,
ERROR
,
FRAMEBITS
,
HEIGHT
,
PROPERTIES
,
SOMEBITS
,
WIDTH
|
Constructor Summary
|
JWindow
()
Creates a window with no specified owner. |
JWindow
(
Frame
owner)
Creates a window with the specified owner frame. |
JWindow
(
GraphicsConfiguration
gc)
Creates a window with the specified GraphicsConfiguration of a screen device. |
JWindow
(
Window
owner)
Creates a window with the specified owner window. |
JWindow
(
Window
owner,
GraphicsConfiguration
gc)
Creates a window with the specified owner window and GraphicsConfiguration of a screen device. |
Methods inherited from class java.awt.
Window
|
addNotify
,
addPropertyChangeListener
,
addPropertyChangeListener
,
addWindowFocusListener
,
addWindowListener
,
addWindowStateListener
,
applyResourceBundle
,
applyResourceBundle
,
createBufferStrategy
,
createBufferStrategy
,
dispose
,
finalize
,
getBufferStrategy
,
getFocusableWindowState
,
getFocusCycleRootAncestor
,
getFocusOwner
,
getFocusTraversalKeys
,
getGraphicsConfiguration
,
getInputContext
,
getListeners
,
getLocale
,
getMostRecentFocusOwner
,
getOwnedWindows
,
getOwner
,
getToolkit
,
getWarningString
,
getWindowFocusListeners
,
getWindowListeners
,
getWindowStateListeners
,
hide
,
isActive
,
isAlwaysOnTop
,
isFocusableWindow
,
isFocusCycleRoot
,
isFocused
,
isLocationByPlatform
,
isShowing
,
pack
,
postEvent
,
processEvent
,
processWindowEvent
,
processWindowFocusEvent
,
processWindowStateEvent
,
removeWindowFocusListener
,
removeWindowListener
,
removeWindowStateListener
,
setAlwaysOnTop
,
setBounds
,
setCursor
,
setFocusableWindowState
,
setFocusCycleRoot
,
setLocationByPlatform
,
setLocationRelativeTo
,
show
,
toBack
,
toFront
|
Methods inherited from class java.awt.
Container
|
add
,
add
,
add
,
add
,
add
,
addContainerListener
,
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
,
preferredSize
,
print
,
printComponents
,
processContainerEvent
,
remove
,
removeAll
,
removeContainerListener
,
removeNotify
,
setComponentZOrder
,
setFocusTraversalKeys
,
setFocusTraversalPolicy
,
setFocusTraversalPolicyProvider
,
setFont
,
transferFocusBackward
,
transferFocusDownCycle
,
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
,
setBounds
,
setComponentOrientation
,
setDropTarget
,
setEnabled
,
setFocusable
,
setFocusTraversalKeysEnabled
,
setForeground
,
setIgnoreRepaint
,
setLocale
,
setLocation
,
setLocation
,
setMaximumSize
,
setMinimumSize
,
setName
,
setPreferredSize
,
setSize
,
setSize
,
setVisible
,
show
,
size
,
toString
,
transferFocus
,
transferFocusUpCycle
|
rootPane
protected JRootPane rootPane
-
The JRootPane instance that manages the contentPane and optional menuBar for this frame, as well as the glassPane.
-
See Also:
-
getRootPane()
,
setRootPane(javax.swing.JRootPane)
rootPaneCheckingEnabled
protected boolean rootPaneCheckingEnabled
-
If true then calls to add and setLayout will be forwarded to the contentPane. This is initially false, but is set to true when the JWindow is constructed.
If true then calls to add and setLayout will cause an exception to be thrown.
-
See Also:
-
isRootPaneCheckingEnabled()
,
setRootPaneCheckingEnabled(boolean)
,
RootPaneContainer
accessibleContext
protected AccessibleContext accessibleContext
-
The accessible context property.
JWindow
public JWindow()
-
Creates a window with no specified owner. This window will not be focusable.
This constructor sets the component's locale property to the value returned by JComponent.getDefaultLocale.
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
Window.isFocusableWindow()
,
JComponent.getDefaultLocale()
JWindow
public JWindow(GraphicsConfiguration gc)
-
Creates a window with the specified GraphicsConfiguration of a screen device. This window will not be focusable.
This constructor sets the component's locale property to the value returned by JComponent.getDefaultLocale.
-
Parameters:
-
gc - the GraphicsConfiguration that is used to construct the new window with; if gc is null, the system default GraphicsConfiguration is assumed
-
Throws:
-
HeadlessException
- If GraphicsEnvironment.isHeadless() returns true.
-
IllegalArgumentException
- if gc is not from a screen device.
-
Since:
-
1.3
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
Window.isFocusableWindow()
,
JComponent.getDefaultLocale()
JWindow
public JWindow(Frame owner)
-
Creates a window with the specified owner frame. If owner is null, the shared owner will be used and this window will not be focusable. Also, this window will not be focusable unless its owner is showing on the screen.
This constructor sets the component's locale property to the value returned by JComponent.getDefaultLocale.
-
Parameters:
-
owner - the frame from which the window is displayed
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
Window.isFocusableWindow()
,
JComponent.getDefaultLocale()
JWindow
public JWindow(Window owner)
-
Creates a window with the specified owner window. This window will not be focusable unless its owner is showing on the screen. If owner is null, the shared owner will be used and this window will not be focusable.
This constructor sets the component's locale property to the value returned by JComponent.getDefaultLocale.
-
Parameters:
-
owner - the window from which the window is displayed
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
Window.isFocusableWindow()
,
JComponent.getDefaultLocale()
JWindow
public JWindow(Window owner,
GraphicsConfiguration gc)
-
Creates a window with the specified owner window and GraphicsConfiguration of a screen device. If owner is null, the shared owner will be used and this window will not be focusable.
This constructor sets the component's locale property to the value returned by JComponent.getDefaultLocale.
-
Parameters:
-
owner - the window from which the window is displayed
-
gc - the GraphicsConfiguration that is used to construct the new window with; if gc is null, the system default GraphicsConfiguration is assumed, unless owner is also null, in which case the GraphicsConfiguration from the shared owner frame will be used.
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
IllegalArgumentException
- if gc is not from a screen device.
-
Since:
-
1.3
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
Window.isFocusableWindow()
,
JComponent.getDefaultLocale()
windowInit
protected void windowInit()
-
Called by the constructors to init the JWindow properly.
-
-
createRootPane
protected JRootPane createRootPane()
-
Called by the constructor methods to create the default rootPane.
-
-
isRootPaneCheckingEnabled
protected boolean isRootPaneCheckingEnabled()
-
Returns whether calls to add and setLayout
are forwarded
will cause an exception
to
the contentPane.
be thrown.
-
-
-
Returns:
-
true if add and setLayout are
fowarded; false otherwise
checked
-
See Also:
-
addImpl(java.awt.Component, java.lang.Object, int)
,
setLayout(java.awt.LayoutManager)
,
setRootPaneCheckingEnabled(boolean)
,
RootPaneContainer
update
public void update(Graphics g)
-
Calls paint(g). This method was overridden to prevent an unnecessary call to clear the background.
-
-
Overrides:
-
update
in class
Container
-
-
Parameters:
-
g - the Graphics context in which to paint
-
See Also:
-
Component.update(Graphics)
setRootPaneCheckingEnabled
protected void setRootPaneCheckingEnabled(boolean enabled)
-
Sets
Determines
whether calls to add and setLayout
are forwarded
will cause an exception
to
the contentPane.
be thrown.
-
-
-
Parameters:
-
enabled - true if add and setLayout are forwarded, false if they should operate directly on the JWindow.
enabled - a boolean value, true if checking is to be enabled, which cause the exceptions to be thrown
-
See Also:
-
addImpl(java.awt.Component, java.lang.Object, int)
,
setLayout(java.awt.LayoutManager)
,
isRootPaneCheckingEnabled()
,
RootPaneContainer
addImpl
protected void addImpl(Component comp,
Object constraints,
int index)
-
Adds the specified child Component. This method is overridden to conditionally forwad calls to the contentPane. By default, children are added to the contentPane instead of the frame, refer to
RootPaneContainer
for details.
By default, children may not be added directly to a this component, they must be added to its contentPane instead. For example:
thisComponent.getContentPane().add(child)
An attempt to add to directly to this component will cause an runtime exception to be thrown. Subclasses can disable this behavior.
-
-
Overrides:
-
addImpl
in class
Container
-
-
Parameters:
-
comp - the component to be enhanced
-
constraints - the constraints to be
respected
enforced on the component
-
index - the index
of the component
-
Throws:
-
IllegalArgumentException
Error
- if index is invalid
-
IllegalArgumentException
- if adding the container's parent to itself
-
IllegalArgumentException
- if adding a window to a container
- if called with rootPaneChecking true
-
See Also:
-
setRootPaneCheckingEnabled(boolean)
,
RootPaneContainer
remove
public void remove(Component comp)
-
Removes the specified component from the container. If comp is not the rootPane, this will forward the call to the contentPane. This will do nothing if comp is not a child of the JWindow or contentPane.
Removes the specified component from this container.
-
-
Overrides:
-
remove
in class
Container
-
-
Parameters:
-
comp - the component to be removed
-
Throws:
-
NullPointerException
- if comp is null
-
See Also:
-
Container.add(java.awt.Component)
,
RootPaneContainer
setLayout
public void setLayout(LayoutManager manager)
-
Sets the LayoutManager. Overridden to conditionally forward the call to the contentPane. Refer to
RootPaneContainer
for more information.
By default the layout of this component may not be set, the layout of its contentPane should be set instead. For example:
thisComponent.getContentPane().setLayout(new GridLayout(1, 2))
An attempt to set the layout of this component will cause an runtime exception to be thrown. Subclasses can disable this behavior.
-
-
Overrides:
-
setLayout
in class
Container
-
-
Parameters:
-
manager - the
LayoutManager
layout manager for the window
-
Throws:
-
Error
- if called with rootPaneChecking true
-
See Also:
-
setRootPaneCheckingEnabled(boolean)
,
RootPaneContainer
getRootPane
public JRootPane getRootPane()
-
Returns the rootPane object for this window.
-
-
Specified by:
-
getRootPane
in interface
RootPaneContainer
-
-
Returns:
-
the rootPane property for this window
-
See Also:
-
setRootPane(javax.swing.JRootPane)
,
RootPaneContainer.getRootPane()
setRootPane
protected void setRootPane(JRootPane root)
-
Sets the new rootPane object for this window. This method is called by the constructor.
-
-
-
Parameters:
-
root - the new rootPane property
-
See Also:
-
getRootPane()
getContentPane
public Container getContentPane()
-
Returns the Container which is the contentPane for this window.
-
-
Specified by:
-
getContentPane
in interface
RootPaneContainer
-
-
Returns:
-
the contentPane property
-
See Also:
-
setContentPane(java.awt.Container)
,
RootPaneContainer.getContentPane()
setContentPane
public void setContentPane(Container contentPane)
-
Sets the contentPane property for this window. This method is called by the constructor.
-
-
Specified by:
-
setContentPane
in interface
RootPaneContainer
-
-
Parameters:
-
contentPane - the new contentPane
-
Throws:
-
IllegalComponentStateException
- (a runtime exception) if the content pane parameter is null
-
See Also:
-
getContentPane()
,
RootPaneContainer.setContentPane(java.awt.Container)
getLayeredPane
public JLayeredPane getLayeredPane()
-
Returns the layeredPane object for this window.
-
-
Specified by:
-
getLayeredPane
in interface
RootPaneContainer
-
-
Returns:
-
the layeredPane property
-
See Also:
-
setLayeredPane(javax.swing.JLayeredPane)
,
RootPaneContainer.getLayeredPane()
setLayeredPane
public void setLayeredPane(JLayeredPane layeredPane)
-
Sets the layeredPane property. This method is called by the constructor.
-
-
Specified by:
-
setLayeredPane
in interface
RootPaneContainer
-
-
Parameters:
-
layeredPane - the new layeredPane object
-
Throws:
-
IllegalComponentStateException
- (a runtime exception) if the content pane parameter is null
-
See Also:
-
getLayeredPane()
,
RootPaneContainer.setLayeredPane(javax.swing.JLayeredPane)
getGlassPane
public Component getGlassPane()
-
Returns the glassPane Component for this window.
-
-
Specified by:
-
getGlassPane
in interface
RootPaneContainer
-
-
Returns:
-
the glassPane property
-
See Also:
-
setGlassPane(java.awt.Component)
,
RootPaneContainer.getGlassPane()
setGlassPane
public void setGlassPane(Component glassPane)
-
Sets the glassPane property. This method is called by the constructor.
-
-
Specified by:
-
setGlassPane
in interface
RootPaneContainer
-
-
Parameters:
-
glassPane - the glassPane object for this window
-
See Also:
-
getGlassPane()
,
RootPaneContainer.setGlassPane(java.awt.Component)
paramString
protected String paramString()
-
Returns a string representation of this JWindow. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.
-
-
Overrides:
-
paramString
in class
Container
-
-
Returns:
-
a string representation of this JWindow
getAccessibleContext
public AccessibleContext getAccessibleContext()
-
Gets the AccessibleContext associated with this JWindow. For JWindows, the AccessibleContext takes the form of an AccessibleJWindow. A new AccessibleJWindow instance is created if necessary.
-
-
Specified by:
-
getAccessibleContext
in interface
Accessible
-
Overrides:
-
getAccessibleContext
in class
Window
-
-
Returns:
-
an AccessibleJWindow that serves as the AccessibleContext of this JWindow