- 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 forJComboBox
.- Since:
- 1.7
-
-
Nested Class Summary
-
Nested classes/interfaces inherited from class javax.swing.plaf.basic.BasicComboBoxUI
BasicComboBoxUI.ComboBoxLayoutManager, BasicComboBoxUI.FocusHandler, BasicComboBoxUI.ItemHandler, BasicComboBoxUI.KeyHandler, BasicComboBoxUI.ListDataHandler, BasicComboBoxUI.PropertyChangeHandler
-
-
Field Summary
-
Fields inherited from 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 and Description SynthComboBoxUI()
-
Method Summary
Methods Modifier and Type Method and Description protected JButton
createArrowButton()
Creates a button which will be used as the control to show or hide the popup portion of the combo box.protected ComboBoxEditor
createEditor()
Creates the default editor that will be used in editable combo boxes.protected ComboPopup
createPopup()
Creates the popup portion of the combo box.protected ListCellRenderer
createRenderer()
Creates the default renderer that will be used in a non-editiable combo box.static ComponentUI
createUI(JComponent c)
Creates a new UI object for the given component.SynthContext
getContext(JComponent c)
Returns the Context for the specified component.protected Dimension
getDefaultSize()
Returns the default size of an empty display area of the combo box using the current renderer and font.protected void
installDefaults()
Installs the default colors, default font, default renderer, and default editor into the JComboBox.protected void
installListeners()
Creates and installs listeners for the combo box and its model.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
paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
Paints the border.void
paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus)
Paints the currently selected item.void
propertyChange(PropertyChangeEvent e)
This method gets called when a bound property is changed.protected void
uninstallDefaults()
Uninstalls the default colors, default font, default renderer, and default editor from the combo box.protected void
uninstallListeners()
Removes the installed listeners from the combo box and its model.void
uninstallUI(JComponent c)
Reverses configuration which was done on the specified component duringinstallUI
.void
update(Graphics g, JComponent c)
Notifies this UI delegate to repaint the specified component.-
Methods inherited from class javax.swing.plaf.basic.BasicComboBoxUI
addEditor, configureArrowButton, configureEditor, createFocusListener, createItemListener, createKeyListener, createLayoutManager, createListDataListener, createPropertyChangeListener, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getDisplaySize, getInsets, getMaximumSize, getMinimumSize, getPreferredSize, getSizeForComponent, installComponents, installKeyboardActions, isFocusTraversable, isNavigationKey, isPopupVisible, paintCurrentValueBackground, rectangleForCurrentValue, removeEditor, selectNextPossibleValue, selectPreviousPossibleValue, setPopupVisible, toggleOpenClose, unconfigureArrowButton, unconfigureEditor, uninstallComponents, uninstallKeyboardActions
-
Methods inherited from class javax.swing.plaf.ComponentUI
contains
-
-
-
-
Method Detail
-
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)
Description copied from class:ComponentUI
Configures the specified component appropriately for the look and feel. This method is invoked when theComponentUI
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.
- Overrides:
installUI
in classBasicComboBoxUI
- 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()
-
installDefaults
protected void installDefaults()
Description copied from class:BasicComboBoxUI
Installs the default colors, default font, default renderer, and default editor into the JComboBox.- Overrides:
installDefaults
in classBasicComboBoxUI
-
installListeners
protected void installListeners()
Description copied from class:BasicComboBoxUI
Creates and installs listeners for the combo box and its model. This method is called when the UI is installed.- Overrides:
installListeners
in classBasicComboBoxUI
-
uninstallUI
public void uninstallUI(JComponent c)
Description copied from class:ComponentUI
Reverses configuration which was done on the specified component duringinstallUI
. This method is invoked when thisUIComponent
instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed ininstallUI
, being careful to leave theJComponent
instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:- Remove any UI-set borders from the component.
- Remove any UI-set layout managers on the component.
- Remove any UI-added sub-components from the component.
- Remove any UI-added event/property listeners from the component.
- Remove any UI-installed keyboard UI from the component.
- Nullify any allocated instance data objects to allow for GC.
- Overrides:
uninstallUI
in classBasicComboBoxUI
- Parameters:
c
- the component from which this UI delegate is being removed; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components- See Also:
ComponentUI.installUI(javax.swing.JComponent)
,JComponent.updateUI()
-
uninstallDefaults
protected void uninstallDefaults()
Description copied from class:BasicComboBoxUI
Uninstalls the default colors, default font, default renderer, and default editor from the combo box.- Overrides:
uninstallDefaults
in classBasicComboBoxUI
-
uninstallListeners
protected void uninstallListeners()
Description copied from class:BasicComboBoxUI
Removes the installed listeners from the combo box and its model. The number and types of listeners removed and in this method should be the same that was added ininstallListeners
- Overrides:
uninstallListeners
in classBasicComboBoxUI
-
getContext
public SynthContext getContext(JComponent c)
Description copied from interface:SynthUI
Returns the Context for the specified component.- Specified by:
getContext
in interfaceSynthUI
- Parameters:
c
- Component requesting SynthContext.- Returns:
- SynthContext describing component.
-
createPopup
protected ComboPopup createPopup()
Description copied from class:BasicComboBoxUI
Creates the popup portion of the combo box.- Overrides:
createPopup
in classBasicComboBoxUI
- Returns:
- an instance of
ComboPopup
- See Also:
ComboPopup
-
createRenderer
protected ListCellRenderer createRenderer()
Description copied from class:BasicComboBoxUI
Creates the default renderer that will be used in a non-editiable combo box. A default renderer will used only if a renderer has not been explicitly set withsetRenderer
.- Overrides:
createRenderer
in classBasicComboBoxUI
- Returns:
- a
ListCellRender
used for the combo box - See Also:
JComboBox.setRenderer(javax.swing.ListCellRenderer<? super E>)
-
createEditor
protected ComboBoxEditor createEditor()
Description copied from class:BasicComboBoxUI
Creates the default editor that will be used in editable combo boxes. A default editor will be used only if an editor has not been explicitly set withsetEditor
.- Overrides:
createEditor
in classBasicComboBoxUI
- Returns:
- a
ComboBoxEditor
used for the combo box - See Also:
JComboBox.setEditor(javax.swing.ComboBoxEditor)
-
propertyChange
public void propertyChange(PropertyChangeEvent e)
Description copied from interface:PropertyChangeListener
This method gets called when a bound property is changed.- Specified by:
propertyChange
in interfacePropertyChangeListener
- Parameters:
e
- A PropertyChangeEvent object describing the event source and the property that has changed.
-
createArrowButton
protected JButton createArrowButton()
Description copied from class:BasicComboBoxUI
Creates a button which will be used as the control to show or hide the popup portion of the combo box.- Overrides:
createArrowButton
in classBasicComboBoxUI
- Returns:
- a button which represents the popup control
-
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 thepaint(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 classComponentUI
- Parameters:
g
- theGraphics
object used for paintingc
- 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 classBasicComboBoxUI
- Parameters:
g
- theGraphics
object used for paintingc
- 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 paintedg
- theGraphics
object used for painting- See Also:
update(Graphics,JComponent)
-
paintBorder
public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
Description copied from interface:SynthUI
Paints the border.- Specified by:
paintBorder
in interfaceSynthUI
- Parameters:
context
- a component contextg
-Graphics
to paint onx
- the X coordinatey
- the Y coordinatew
- width of the borderh
- height of the border
-
paintCurrentValue
public void paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus)
Paints the currently selected item.- Overrides:
paintCurrentValue
in classBasicComboBoxUI
-
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 classBasicComboBoxUI
- Returns:
- the size of an empty display area
- See Also:
BasicComboBoxUI.getDisplaySize()
-
-
Document created the 11/06/2005, last modified the 04/03/2020
Source of the printed document:https://www.gaudry.be/en/java-api-rf-javax/swing/plaf/synth/synthcomboboxui.html/.html/
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.