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 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

Fields

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

Constructors

Constructor	Description
`MetalComboBoxUI()`

Methods

Modifier and Type	Method	Description
`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.

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

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

Constructors

MetalComboBoxUI

public MetalComboBoxUI()

Methods

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)

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.

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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/plaf/metal/MetalComboBoxUI.html