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Class com.sun.java.swing.JWindow

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Window
                           |
                           +----com.sun.java.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

Variable Index

 o accessibleContext
 o rootPane
 o rootPaneCheckingEnabled

Constructor Index

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

Method Index

 o addImpl(Component, Object, int)
By default, children may not be added directly to a this component, they must be added to its contentPane instead.
 o createRootPane()
Called by the constructor methods to create the default rootPane.
 o getAccessibleContext()
Get the AccessibleContext associated with this JWindow
 o getContentPane()
Returns the contentPane object for this window.
 o getGlassPane()
Returns the glassPane object for this window.
 o getLayeredPane()
Returns the layeredPane object for this window.
 o getRootPane()
Returns the rootPane object for this window.
 o isRootPaneCheckingEnabled()
 o setContentPane(Container)
Sets the contentPane property.
 o setGlassPane(Component)
Sets the glassPane property.
 o setLayeredPane(JLayeredPane)
Sets the layeredPane property.
 o setLayout(LayoutManager)
By default the layout of this component may not be set, the layout of its contentPane should be set instead.
 o setRootPane(JRootPane)
Sets the rootPane property.
 o setRootPaneCheckingEnabled(boolean)
If true then calls to add() and setLayout() will cause an exception to be thrown.
 o windowInit()
Called by the constructors to init the JWindow properly.

Variables

 o rootPane
 protected JRootPane rootPane
See Also:
getRootPane, setRootPane
 o rootPaneCheckingEnabled
 protected boolean rootPaneCheckingEnabled
See Also:
isRootPaneCheckingEnabled, setRootPaneCheckingEnabled
 o accessibleContext
 protected AccessibleContext accessibleContext

Constructors

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

 o JWindow
 public JWindow(Frame owner)
Creates a window with the specified owner frame.

Parameters:
owner - the frame from which the window is displayed

Methods

 o windowInit
 protected void windowInit()
Called by the constructors to init the JWindow properly.

 o createRootPane
 protected JRootPane createRootPane()
Called by the constructor methods to create the default rootPane.

 o isRootPaneCheckingEnabled
 protected boolean isRootPaneCheckingEnabled()
Returns:
true if add and setLayout should be checked
See Also:
addImpl, setLayout, setRootPaneCheckingEnabled
 o 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
 o 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
 o 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
 o getRootPane
 public JRootPane getRootPane()
Returns the rootPane object for this window.

See Also:
setRootPane, getRootPane
 o 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, setRootPane
 o getContentPane
 public Container getContentPane()
Returns the contentPane object for this window.

See Also:
setContentPane, getContentPane
 o setContentPane
 public void setContentPane(Container contentPane)
Sets the contentPane property. This method is called by the constructor.

Parameters:
contentPane - the contentPane object for this window
See Also:
getContentPane, setContentPane
 o getLayeredPane
 public JLayeredPane getLayeredPane()
Returns the layeredPane object for this window.

See Also:
setLayeredPane, getLayeredPane
 o setLayeredPane
 public void setLayeredPane(JLayeredPane layeredPane)
Sets the layeredPane property. This method is called by the constructor.

Parameters:
layeredPane - the layeredPane object for this window
See Also:
getLayeredPane, setLayeredPane
 o getGlassPane
 public Component getGlassPane()
Returns the glassPane object for this window.

See Also:
setGlassPane, getGlassPane
 o setGlassPane
 public void setGlassPane(Component glassPane)
Sets the glassPane property. This method is called by the constructor.

Parameters:
glassPane - the glassPane object for this window
See Also:
getGlassPane, setGlassPane
 o getAccessibleContext
 public AccessibleContext getAccessibleContext()
Get the AccessibleContext associated with this JWindow

Returns:
the AccessibleContext of this JWindow

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