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JavaTM 2 Platform Std. Ed. v1.5.0

javax.swing
Class PopupFactory

java.lang.Object
  extended by javax.swing.PopupFactory

public class PopupFactory
extends Object

PopupFactory, as the name implies, is used to obtain instances of Popups. Popups are used to display a Component above all other Components in a particular containment hierarchy. The general contract is that once you have obtained a Popup from a PopupFactory, you must invoke hide on the Popup. The typical usage is:

   PopupFactory factory = PopupFactory.getSharedInstance();
   Popup popup = factory.getPopup(owner, contents, x, y);
   popup.show();
   ...
   popup.hide();
 

Since:
1.4
See Also:
Popup

Constructor Summary
PopupFactory()
           
 
Method Summary
 Popup getPopup(Component owner, Component contents, int x, int y)
          Creates a Popup for the Component owner containing the Component contents.
static PopupFactory getSharedInstance()
          Returns the shared PopupFactory which can be used to obtain Popups.
static void setSharedInstance(PopupFactory factory)
          Sets the PopupFactory that will be used to obtain Popups.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PopupFactory

public PopupFactory()
Method Detail

setSharedInstance

public static void setSharedInstance(PopupFactory factory)
Sets the PopupFactory that will be used to obtain Popups. This will throw an IllegalArgumentException if factory is null.

Parameters:
factory - Shared PopupFactory
Throws:
IllegalArgumentException - if factory is null
See Also:
getPopup(java.awt.Component, java.awt.Component, int, int)

getSharedInstance

public static PopupFactory getSharedInstance()
Returns the shared PopupFactory which can be used to obtain Popups.

Returns:
Shared PopupFactory

getPopup

public Popup getPopup(Component owner,
                      Component contents,
                      int x,
                      int y)
               throws IllegalArgumentException
Creates a Popup for the Component owner containing the Component contents. owner is used to determine which Window the new Popup will parent the Component the Popup creates to. A null owner implies there is no valid parent. x and y specify the preferred initial location to place the Popup at. Based on screen size, or other paramaters, the Popup may not display at x and y.

Parameters:
owner - Component mouse coordinates are relative to, may be null
contents - Contents of the Popup
x - Initial x screen coordinate
y - Initial y screen coordinate
Returns:
Popup containing Contents
Throws:
IllegalArgumentException - if contents is null

Copyright 2003 Sun Microsystems, Inc. All rights reserved