MetalComboBoxUI
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 and 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 inherited from class javax.swing.plaf.basic.BasicComboBoxUI
BasicComboBoxUI.ComboBoxLayoutManager, BasicComboBoxUI.FocusHandler, BasicComboBoxUI.ItemHandler, BasicComboBoxUI.KeyHandler, BasicComboBoxUI.ListDataHandler, BasicComboBoxUI.PropertyChangeHandler
Fields
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
Constructors
MetalComboBoxUI
public MetalComboBoxUI()
Methods
createUI
public static ComponentUI createUI(JComponent c)
paint
public void paint(Graphics g, JComponent c)
Description copied from class: ComponentUI
Paints the specified component appropriately for the look and feel. This method is invoked from the ComponentUI.update
method when the specified component is being painted. Subclasses should override this method and use the specified Graphics
object to render the content of the component.
- Overrides:
-
paint
in classBasicComboBoxUI
- Parameters:
-
g
- theGraphics
context in which to paint -
c
- the component being painted; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components - See Also:
ComponentUI.update(java.awt.Graphics, javax.swing.JComponent)
paintCurrentValue
public void paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus)
If necessary paints the currently selected item.
- Overrides:
-
paintCurrentValue
in classBasicComboBoxUI
- 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 classBasicComboBoxUI
- 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 classBasicComboBoxUI
- 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
- ifc
isnull
-
IllegalArgumentException
- if width or height is < 0 - Since:
- 1.6
- See Also:
JComponent.getBaseline(int, int)
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 with setEditor
.
- Overrides:
-
createEditor
in classBasicComboBoxUI
- Returns:
- a
ComboBoxEditor
used for the combo box - See Also:
JComboBox.setEditor(javax.swing.ComboBoxEditor)
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
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
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 classBasicComboBoxUI
- 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.
createLayoutManager
protected LayoutManager createLayoutManager()
Description copied from class: BasicComboBoxUI
Creates a layout manager for managing the components which make up the combo box.
- Overrides:
-
createLayoutManager
in classBasicComboBoxUI
- Returns:
- an instance of a layout manager
layoutComboBox
public void layoutComboBox(Container parent, MetalComboBoxUI.MetalComboBoxLayoutManager manager)
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 classBasicComboBoxUI
- 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 classBasicComboBoxUI
- See Also:
BasicComboBoxUI.addEditor()
getMinimumSize
public Dimension getMinimumSize(JComponent c)
Description copied from class: BasicComboBoxUI
The minimum size is the size of the display area plus insets plus the button.
- Overrides:
-
getMinimumSize
in classBasicComboBoxUI
- Parameters:
-
c
- the component whose minimum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components - Returns:
- a
Dimension
object ornull
- See Also:
-
JComponent.getMinimumSize()
,LayoutManager.minimumLayoutSize(java.awt.Container)
,ComponentUI.getPreferredSize(javax.swing.JComponent)
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