Module java.desktop

Package javax.swing.plaf.metal

Class MetalComboBoxUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.ComboBoxUI

javax.swing.plaf.basic.BasicComboBoxUI

javax.swing.plaf.metal.MetalComboBoxUI

public class MetalComboBoxUI
extends BasicComboBoxUI

Metal UI for JComboBox

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see XMLEncoder.

See Also:

• MetalComboBoxEditor
• MetalComboBoxButton

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	MetalComboBoxUI.MetalComboBoxLayoutManager	This class should be treated as a "protected" inner class.
class	MetalComboBoxUI.MetalComboPopup	Deprecated. As of Java 2 platform v1.4.
class	MetalComboBoxUI.MetalPropertyChangeListener	This class should be treated as a "protected" inner class.

Nested classes/interfaces declared in class javax.swing.plaf.basic.BasicComboBoxUI

BasicComboBoxUI.ComboBoxLayoutManager, BasicComboBoxUI.FocusHandler, BasicComboBoxUI.ItemHandler, BasicComboBoxUI.KeyHandler, BasicComboBoxUI.ListDataHandler, BasicComboBoxUI.PropertyChangeHandler

Field Summary

Fields declared in class javax.swing.plaf.basic.BasicComboBoxUI

arrowButton, cachedMinimumSize, comboBox, currentValuePane, editor, focusListener, hasFocus, isMinimumSizeDirty, itemListener, keyListener, listBox, listDataListener, padding, popup, popupKeyListener, popupMouseListener, popupMouseMotionListener, propertyChangeListener, squareButton

Constructor Summary

Constructors

Constructor	Description
MetalComboBoxUI()	Constructs a MetalComboBoxUI.

Method Summary

Modifier and Type	Method	Description
void	configureEditor()	This protected method is implementation specific and should be private.
PropertyChangeListener	createPropertyChangeListener()	Creates a PropertyChangeListener which will be added to the combo box.
static ComponentUI	createUI(JComponent c)	Constructs an instance of MetalComboBoxUI.
protected void	editablePropertyChanged(PropertyChangeEvent e)	Deprecated. As of Java 2 platform v1.4.
int	getBaseline(JComponent c, int width, int height)	Returns the baseline.
void	layoutComboBox(Container parent, MetalComboBoxUI.MetalComboBoxLayoutManager manager)	Lays out the JComboBox in the parent container.
void	paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus)	If necessary paints the currently selected item.
void	paintCurrentValueBackground(Graphics g, Rectangle bounds, boolean hasFocus)	If necessary paints the background of the currently selected item.
protected void	removeListeners()	Deprecated. As of Java 2 platform v1.4.
void	unconfigureEditor()	This protected method is implementation specific and should be private.

Methods declared in class javax.swing.plaf.basic.BasicComboBoxUI

addEditor, configureArrowButton, createArrowButton, createEditor, createFocusListener, createItemListener, createKeyListener, createLayoutManager, createListDataListener, createPopup, createRenderer, getBaselineResizeBehavior, getDefaultSize, getDisplaySize, getInsets, getMinimumSize, getSizeForComponent, installComponents, installDefaults, installKeyboardActions, installListeners, isFocusTraversable, isNavigationKey, isPopupVisible, rectangleForCurrentValue, removeEditor, selectNextPossibleValue, selectPreviousPossibleValue, setPopupVisible, toggleOpenClose, unconfigureArrowButton, uninstallComponents, uninstallDefaults, uninstallKeyboardActions, uninstallListeners

Methods declared in class javax.swing.plaf.ComponentUI

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

Methods declared in class java.lang.Object

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

Constructor Details

MetalComboBoxUI

public MetalComboBoxUI()

Constructs a MetalComboBoxUI.

Method Details

createUI

public static ComponentUI createUI(JComponent c)

Constructs an instance of MetalComboBoxUI.

Parameters:

c - a component

Returns:

an instance of MetalComboBoxUI

paintCurrentValue

public void paintCurrentValue(Graphics g,
 Rectangle bounds,
 boolean hasFocus)

If necessary paints the currently selected item.

Overrides:

paintCurrentValue in class BasicComboBoxUI

Parameters:

g - Graphics to paint to

bounds - Region to paint current value to

hasFocus - whether or not the JComboBox has focus

Throws:

NullPointerException - if any of the arguments are null.

Since:

1.5

paintCurrentValueBackground

public void paintCurrentValueBackground(Graphics g,
 Rectangle bounds,
 boolean hasFocus)

If necessary paints the background of the currently selected item.

Overrides:

paintCurrentValueBackground in class BasicComboBoxUI

Parameters:

g - Graphics to paint to

bounds - Region to paint background to

hasFocus - whether or not the JComboBox has focus

Throws:

NullPointerException - if any of the arguments are null.

Since:

1.5

getBaseline

public int getBaseline(JComponent c,
 int width,
 int height)

Returns the baseline.

Overrides:

getBaseline in class BasicComboBoxUI

Parameters:

c - JComponent baseline is being requested for

width - the width to get the baseline for

height - the height to get the baseline for

Returns:

baseline or a value < 0 indicating there is no reasonable baseline

Throws:

NullPointerException - if c is null

IllegalArgumentException - if width or height is < 0

Since:

1.6

See Also:

• JComponent.getBaseline(int, int)

createPropertyChangeListener

public PropertyChangeListener createPropertyChangeListener()

Description copied from class: BasicComboBoxUI

Creates a PropertyChangeListener which will be added to the combo box. If this method returns null then it will not be added to the combo box.

Overrides:

createPropertyChangeListener in class BasicComboBoxUI

Returns:

an instance of a PropertyChangeListener or null

editablePropertyChanged

@Deprecated
protected void editablePropertyChanged(PropertyChangeEvent e)

Deprecated.

As of Java 2 platform v1.4.

As of Java 2 platform v1.4 this method is no longer used. Do not call or override. All the functionality of this method is in the MetalPropertyChangeListener.

Parameters:

e - an instance of PropertyChangeEvent

layoutComboBox

public void layoutComboBox(Container parent,
 MetalComboBoxUI.MetalComboBoxLayoutManager manager)

Lays out the JComboBox in the parent container.

Parameters:

parent - a container

manager - an instance of MetalComboBoxLayoutManager

removeListeners

@Deprecated
protected void removeListeners()

Deprecated.

As of Java 2 platform v1.4.

As of Java 2 platform v1.4 this method is no longer used.

configureEditor

public void configureEditor()

Description copied from class: BasicComboBoxUI

This protected method is implementation specific and should be private. do not call or override.

Overrides:

configureEditor in class BasicComboBoxUI

See Also:

• BasicComboBoxUI.addEditor()

unconfigureEditor

public void unconfigureEditor()

Description copied from class: BasicComboBoxUI

This protected method is implementation specific and should be private. Do not call or override.

Overrides:

unconfigureEditor in class BasicComboBoxUI

See Also:

• BasicComboBoxUI.addEditor()