Class ComboBoxUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.ComboBoxUI

Direct Known Subclasses:

BasicComboBoxUI, MultiComboBoxUI

public abstract class ComboBoxUI
extends ComponentUI

Pluggable look and feel interface for JComboBox.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ComboBoxUI()	Constructor for subclasses to call.

Method Summary

Modifier and Type	Method	Description
abstract boolean	isFocusTraversable(JComboBox<?> c)	Determine whether or not the combo box itself is traversable
abstract boolean	isPopupVisible(JComboBox<?> c)	Determine the visibility of the popup
abstract void	setPopupVisible(JComboBox<?> c, boolean v)	Set the visibility of the popup

Methods declared in class ComponentUI

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

Modifier and Type	Method	Description
boolean	contains(JComponent c, int x, int y)	Returns true if the specified x,y location is contained within the look and feel's defined shape of the specified component.
static ComponentUI	createUI(JComponent c)	Returns an instance of the UI delegate for the specified component.
Accessible	getAccessibleChild(JComponent c, int i)	Returns the ith Accessible child of the object.
int	getAccessibleChildrenCount(JComponent c)	Returns the number of accessible children in the object.
int	getBaseline(JComponent c, int width, int height)	Returns the baseline.
Component.BaselineResizeBehavior	getBaselineResizeBehavior(JComponent c)	Returns an enum indicating how the baseline of the component changes as the size changes.
Dimension	getMaximumSize(JComponent c)	Returns the specified component's maximum size appropriate for the look and feel.
Dimension	getMinimumSize(JComponent c)	Returns the specified component's minimum size appropriate for the look and feel.
Dimension	getPreferredSize(JComponent c)	Returns the specified component's preferred size appropriate for the look and feel.
void	installUI(JComponent c)	Configures the specified component appropriately for the look and feel.
void	paint(Graphics g, JComponent c)	Paints the specified component appropriately for the look and feel.
void	uninstallUI(JComponent c)	Reverses configuration which was done on the specified component during installUI.
void	update(Graphics g, JComponent c)	Notifies this UI delegate that it is time to paint the specified component.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Creates and returns a copy of this object.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
final Class<?>	getClass()	Returns the runtime class of this Object.
int	hashCode()	Returns a hash code value for this object.
final void	notify()	Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll()	Wakes up all threads that are waiting on this object's monitor.
String	toString()	Returns a string representation of the object.
final void	wait()	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
final void	wait(long timeoutMillis)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
final void	wait(long timeoutMillis, int nanos)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Constructor Details

ComboBoxUI

protected ComboBoxUI()

Constructor for subclasses to call.

Method Details

setPopupVisible

public abstract void setPopupVisible(JComboBox<?> c,
 boolean v)

Set the visibility of the popup

Parameters:

c - a JComboBox

v - a boolean determining the visibility of the popup

isPopupVisible

public abstract boolean isPopupVisible(JComboBox<?> c)

Determine the visibility of the popup

Parameters:

c - a JComboBox

Returns:

true if popup of the JComboBox is visible

isFocusTraversable

public abstract boolean isFocusTraversable(JComboBox<?> c)

Determine whether or not the combo box itself is traversable

Parameters:

c - a JComboBox

Returns:

true if the given JComboBox is traversable