javax.swing.plaf

Class ComboBoxUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.ComboBoxUI

Direct Known Subclasses:

BasicComboBoxUI, MultiComboBoxUI

public abstract class ComboBoxUI
extends ComponentUI

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

Constructor Summary

Constructors

Constructor and Description
ComboBoxUI() Constructs a new ComboBoxUI.

Method Summary

Methods

Modifier and Type	Method and Description
abstract boolean	isFocusTraversable(JComboBox c) Determines whether the combo box can receive input focus.
abstract boolean	isPopupVisible(JComboBox c) Determines whether the popup button is currently visible.
abstract void	setPopupVisible(JComboBox c, boolean visible) Sets the visibility of the popup button.

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

ComboBoxUI

public ComboBoxUI()

Constructs a new ComboBoxUI.

Method Detail

setPopupVisible

public abstract void setPopupVisible(JComboBox c,
                   boolean visible)

Sets the visibility of the popup button.

Parameters:

c - the JComboBox whose popup is shown or hidden.

visible - true to show the popup, false to hide it.

isPopupVisible

public abstract boolean isPopupVisible(JComboBox c)

Determines whether the popup button is currently visible.

Parameters:

c - the JComboBox whose popup visibility is retrieved.

Returns:

true if the popup button is currently visible, false otherwise.

isFocusTraversable

public abstract boolean isFocusTraversable(JComboBox c)

Determines whether the combo box can receive input focus.

Parameters:

c - JComboBox whose focus traversability is to be retrieved.

Returns:

true if c can receive input focus, false otherwise.