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Class java.awt.swing.JWindow

java.lang.Object
    |
    +----java.awt.Component
            |
            +----java.awt.Container
                    |
                    +----java.awt.Window
                            |
                            +----java.awt.swing.JWindow

public class JWindow
extends Window
implements Accessible, RootPaneContainer
The JWindow component contains a JRootPane as it's only child. The contentPane() should be the parent of any children of the JWindow. From the older java.awt.Window object you would normally do something:
       window.add(child);
 
Using JWindow the proper semantic is:
       window.getContentPane().add(child);
 
The same is true of setting LayoutManagers, removing components, listing children, etc. All these methods should normally be sent to the 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.

Please see the JRootPane documentation for a complete description of the contentPane(), glassPane(), and layeredPane() components.

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 Swing1.0 applications. It will not be possible to load serialized Swing1.0 objects with future releases of Swing. The JDK1.2 release of Swing will be the compatibility baseline for the serialized form of Swing objects.

See Also:
JRootPane

Inner Class Summary
 JWindow.AccessibleJWindow
 
 

Field Summary
AccessibleContext  accessibleContext
 
JRootPane  rootPane
 
boolean  rootPaneCheckingEnabled
 
 
Fields inherited from class java.awt.Component
 BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
 

Constructor Summary
 JWindow()
Creates a window with no specified owner.
 JWindow(Frame owner)
Creates a window with the specified owner frame.
 

Method Summary
void  addImpl(Component comp, Object constraints, int index)
By default, children may not be added directly to a this component, they must be added to its contentPane instead.
JRootPane  createRootPane()
Called by the constructor methods to create the default rootPane.
AccessibleContext  getAccessibleContext()
Get the AccessibleContext associated with this JWindow
Container  getContentPane()
Returns the contentPane object for this window.
Component  getGlassPane()
Returns the glassPane object for this window.
JLayeredPane  getLayeredPane()
Returns the layeredPane object for this window.
JRootPane  getRootPane()
Returns the rootPane object for this window.
boolean  isRootPaneCheckingEnabled()
 
void  setContentPane(Container contentPane)
Sets the contentPane property.
void  setGlassPane(Component glassPane)
Sets the glassPane property.
void  setLayeredPane(JLayeredPane layeredPane)
Sets the layeredPane property.
void  setLayout(LayoutManager manager)
By default the layout of this component may not be set, the layout of its contentPane should be set instead.
void  setRootPane(JRootPane root)
Sets the rootPane property.
void  setRootPaneCheckingEnabled(boolean enabled)
If true then calls to add() and setLayout() will cause an exception to be thrown.
void  windowInit()
Called by the constructors to init the JWindow properly.
 
Methods inherited from class java.awt.Window
 addNotify, addWindowListener, dispose, getFocusOwner, getInputContext, getLocale, getOwnedWindows, getOwner, getToolkit, getWarningString, isShowing, pack, postEvent, processEvent, processWindowEvent, removeWindowListener, show, toBack, toFront
 
Methods inherited from class java.awt.Container
 add, add, add, add, add, addContainerListener, addImpl, addNotify, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paint, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setLayout, update, validate, validateTree
 
Methods inherited from class java.awt.Component
 action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getColorModel, getComponentAt, getComponentAt, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getName, getParent, getPeer, getPreferredSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isDisplayable, isEnabled, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paint, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBackground, setBounds, setBounds, setCursor, setDropTarget, setEnabled, setFont, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, update, validate
 
Methods inherited from class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

rootPane

protected JRootPane rootPane
See Also:
getRootPane, setRootPane

rootPaneCheckingEnabled

protected boolean rootPaneCheckingEnabled
See Also:
isRootPaneCheckingEnabled, setRootPaneCheckingEnabled

accessibleContext

protected AccessibleContext accessibleContext
Constructor Detail

JWindow

public JWindow()
Creates a window with no specified owner.

JWindow

public JWindow(Frame owner)
Creates a window with the specified owner frame.
Parameters:
owner - the frame from which the window is displayed
Method Detail

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:
true if add and setLayout should be checked
See Also:
addImpl, setLayout, setRootPaneCheckingEnabled

setRootPaneCheckingEnabled

protected void setRootPaneCheckingEnabled(boolean enabled)
If true then calls to add() and setLayout() will cause an exception to be thrown.
See Also:
addImpl, setLayout, isRootPaneCheckingEnabled

addImpl

protected void addImpl(Component comp,
                       Object constraints,
                       int index)
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.
Throws:
Error - if called with rootPaneChecking true
Overrides:
addImpl in class Container
See Also:
setRootPaneCheckingEnabled

setLayout

public void setLayout(LayoutManager manager)
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 BorderLayout())
 
An attempt to set the layout of this component will cause an runtime exception to be thrown. Subclasses can disable this behavior.
Throws:
Error - if called with rootPaneChecking true
Overrides:
setLayout in class Container
See Also:
setRootPaneCheckingEnabled

getRootPane

public JRootPane getRootPane()
Returns the rootPane object for this window.
Implements:
getRootPane in interface RootPaneContainer
See Also:
setRootPane, getRootPane

setRootPane

protected void setRootPane(JRootPane root)
Sets the rootPane property. This method is called by the constructor.
Parameters:
root - the rootPane object for this window
See Also:
getRootPane, RootPaneContainer#setRootPane

getContentPane

public Container getContentPane()
Returns the contentPane object for this window.
Implements:
getContentPane in interface RootPaneContainer
See Also:
setContentPane, getContentPane

setContentPane

public void setContentPane(Container contentPane)
Sets the contentPane property. This method is called by the constructor.
Implements:
setContentPane in interface RootPaneContainer
Parameters:
contentPane - the contentPane object for this window
See Also:
getContentPane, setContentPane

getLayeredPane

public JLayeredPane getLayeredPane()
Returns the layeredPane object for this window.
Implements:
getLayeredPane in interface RootPaneContainer
See Also:
setLayeredPane, getLayeredPane

setLayeredPane

public void setLayeredPane(JLayeredPane layeredPane)
Sets the layeredPane property. This method is called by the constructor.
Implements:
setLayeredPane in interface RootPaneContainer
Parameters:
layeredPane - the layeredPane object for this window
See Also:
getLayeredPane, setLayeredPane

getGlassPane

public Component getGlassPane()
Returns the glassPane object for this window.
Implements:
getGlassPane in interface RootPaneContainer
See Also:
setGlassPane, getGlassPane

setGlassPane

public void setGlassPane(Component glassPane)
Sets the glassPane property. This method is called by the constructor.
Implements:
setGlassPane in interface RootPaneContainer
Parameters:
glassPane - the glassPane object for this window
See Also:
getGlassPane, setGlassPane

getAccessibleContext

public AccessibleContext getAccessibleContext()
Get the AccessibleContext associated with this JWindow
Implements:
getAccessibleContext in interface Accessible
Returns:
the AccessibleContext of this JWindow

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