Class SynthComboBoxUI

java.lang.Object
- javax.swing.plaf.ComponentUI
- - javax.swing.plaf.ComboBoxUI
  - - javax.swing.plaf.basic.BasicComboBoxUI
    - - javax.swing.plaf.synth.SynthComboBoxUI

All Implemented Interfaces:: PropertyChangeListener, EventListener, SynthConstants, SynthUI

public class SynthComboBoxUI
extends BasicComboBoxUI
implements PropertyChangeListener, SynthUI

Provides the Synth L&F UI delegate for JComboBox.

Since:: 1.7

Nested Classes

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

Fields declared in interface javax.swing.plaf.synth.SynthConstants

DEFAULT, DISABLED, ENABLED, FOCUSED, MOUSE_OVER, PRESSED, SELECTED

Constructors

Constructor	Description
`SynthComboBoxUI()`

Methods

Modifier and Type	Method	Description
`static ComponentUI`	`createUI(JComponent c)`	Creates a new UI object for the given component.
`protected Dimension`	`getDefaultSize()`	Returns the default size of an empty display area of the combo box using the current renderer and font.
`void`	`installUI(JComponent c)`	Configures the specified component appropriately for the look and feel.
`void`	`paint(Graphics g, JComponent c)`	Paints the specified component according to the Look and Feel.
`protected void`	`paint(SynthContext context, Graphics g)`	Paints the specified component.
`void`	`paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus)`	Paints the currently selected item.
`void`	`update(Graphics g, JComponent c)`	Notifies this UI delegate to repaint the specified component.

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

addEditor, configureArrowButton, configureEditor, createArrowButton, createEditor, createFocusListener, createItemListener, createKeyListener, createLayoutManager, createListDataListener, createPopup, createPropertyChangeListener, createRenderer, getBaseline, getBaselineResizeBehavior, getDisplaySize, getInsets, getMinimumSize, getSizeForComponent, installComponents, installDefaults, installKeyboardActions, installListeners, isFocusTraversable, isNavigationKey, isPopupVisible, paintCurrentValueBackground, 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, uninstallUI

Methods declared in class java.lang.Object

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

Methods declared in interface java.beans.PropertyChangeListener

propertyChange

Methods declared in interface javax.swing.plaf.synth.SynthUI

getContext, paintBorder

Constructors

SynthComboBoxUI

public SynthComboBoxUI()

Methods

createUI

public static ComponentUI createUI(JComponent c)

Creates a new UI object for the given component.

Parameters:: c - component to create UI object for
Returns:: the UI object

installUI

public void installUI(JComponent c)

Configures the specified component appropriately for the look and feel. This method is invoked when the ComponentUI instance is being installed as the UI delegate on the specified component. This method should completely configure the component for the look and feel, including the following:

Install default property values for color, fonts, borders, icons, opacity, etc. on the component. Whenever possible, property values initialized by the client program should not be overridden.
Install a LayoutManager on the component if necessary.
Create/add any required sub-components to the component.
Create/install event listeners on the component.
Create/install a PropertyChangeListener on the component in order to detect and respond to component property changes appropriately.
Install keyboard UI (mnemonics, traversal, etc.) on the component.
Initialize any appropriate instance data.

Overridden to ensure that ButtonHandler is created prior to any of the other installXXX methods, since several of them reference buttonHandler.

Overrides:: installUI in class ComponentUI
Parameters:: c - the component where this UI delegate is being installed
See Also:: ComponentUI.uninstallUI(javax.swing.JComponent), JComponent.setUI(javax.swing.plaf.ComponentUI), JComponent.updateUI()

update

public void update(Graphics g,
                   JComponent c)

Notifies this UI delegate to repaint the specified component. This method paints the component background, then calls the paint(SynthContext,Graphics) method.

In general, this method does not need to be overridden by subclasses. All Look and Feel rendering code should reside in the paint method.

Overrides:: update in class ComponentUI
Parameters:: g - the Graphics object used for painting; c - the component being painted
See Also:: paint(SynthContext,Graphics)

paint

public void paint(Graphics g,
                  JComponent c)

Paints the specified component according to the Look and Feel.

This method is not used by Synth Look and Feel. Painting is handled by the paint(SynthContext,Graphics) method.

Overrides:: paint in class ComponentUI
Parameters:: g - the Graphics object used for painting; c - the component being painted
See Also:: paint(SynthContext,Graphics)

paint

protected void paint(SynthContext context,
                     Graphics g)

Paints the specified component.

Parameters:: context - context for the component being painted; g - the Graphics object used for painting
See Also:: update(Graphics,JComponent)

paintCurrentValue

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

Paints the currently selected item.

Overrides:: paintCurrentValue in class BasicComboBoxUI
Parameters:: g - an instance of Graphics; bounds - a bounding rectangle to render to; hasFocus - is focused

getDefaultSize

protected Dimension getDefaultSize()

Returns the default size of an empty display area of the combo box using the current renderer and font. This method was overridden to use SynthComboBoxRenderer instead of DefaultListCellRenderer as the default renderer when calculating the size of the combo box. This is used in the case of the combo not having any data.

Overrides:: getDefaultSize in class BasicComboBoxUI
Returns:: the size of an empty display area
See Also:: BasicComboBoxUI.getDisplaySize()

© 1993, 2020, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/plaf/synth/SynthComboBoxUI.html