Class 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

Constructors

Constructor and Description
PopupFactory()

Methods

Modifier and Type Method and Description
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

Constructors

PopupFactory

public PopupFactory()

Methods

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

© 1993, 2020, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/javase/8/docs/api/javax/swing/PopupFactory.html