javax.swing.plaf

Class ComboBoxUI

public abstract class ComboBoxUI extends ComponentUI

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

Constructor Summary
	ComboBoxUI() Constructs a new `ComboBoxUI`.

Method Summary
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.

Constructor Detail

public ComboBoxUI()

Constructs a new ComboBoxUI.

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.

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.

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.