javax.swing.plaf

Class PopupMenuUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.PopupMenuUI

Direct Known Subclasses:

BasicPopupMenuUI, MultiPopupMenuUI

public abstract class PopupMenuUI
extends ComponentUI

An abstract base class for delegates that implement the pluggable look and feel for a JPopupMenu.

See Also:

JPopupMenu

Constructor Summary

Constructors

Constructor and Description
PopupMenuUI() Constructs a new PopupMenuUI.

Method Summary

Methods

Modifier and Type	Method and Description
Popup	getPopup(JPopupMenu popup, int x, int y) Creates a Popup for displaying the popup menu.
boolean	isPopupTrigger(MouseEvent event) Tests whether or not a mouse event triggers a popup menu.

Methods inherited from class javax.swing.plaf.ComponentUI

contains, createUI, getAccessibleChild, getAccessibleChildrenCount, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PopupMenuUI

public PopupMenuUI()

Constructs a new PopupMenuUI.

Method Detail

isPopupTrigger

public boolean isPopupTrigger(MouseEvent event)

Tests whether or not a mouse event triggers a popup menu.

The default implementation calls event.isPopupTrigger(), which checks for the gesture that is common for the platform on which the application runs. If a look and feel wants to employ non-standard conventions for triggering a popup menu, it can override this method.

Parameters:

event - the event to check.

Returns:

true if the event triggers a popup menu; false otherwise.

Since:

1.3

getPopup

public Popup getPopup(JPopupMenu popup,
             int x,
             int y)

Creates a Popup for displaying the popup menu. The default implementation uses the PopupFactory for retrieving a suitable Popup, but subclasses might want to override this method if a LookAndFeel needs special Popups.

Parameters:

popup - the JPopupMenu for whose display a Popup is needed.

x - the horizontal position where the popup will be displayed.

y - the vertical position where the popup will be displayed.

Returns:

a Popup for showing and hiding the menu.

Since:

1.4