BasicComboBoxRenderer
Class BasicComboBoxRenderer
- java.lang.Object
-
- java.awt.Component
-
- java.awt.Container
-
- javax.swing.JComponent
-
- javax.swing.JLabel
-
- javax.swing.plaf.basic.BasicComboBoxRenderer
- All Implemented Interfaces:
- ImageObserver, MenuContainer, Serializable, Accessible, ListCellRenderer, SwingConstants
- Direct Known Subclasses:
- BasicComboBoxRenderer.UIResource
public class BasicComboBoxRenderer extends JLabel implements ListCellRenderer, Serializable
ComboBox renderer
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
.
Nested Classes
Modifier and Type | Class and Description |
---|---|
static class |
BasicComboBoxRenderer.UIResource A subclass of BasicComboBoxRenderer that implements UIResource. |
Nested classes/interfaces inherited from class javax.swing.JLabel
JLabel.AccessibleJLabel
Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer
Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
Fields
noFocusBorder
protected static Border noFocusBorder
An empty Border
. This field might not be used. To change the Border
used by this renderer directly set it using the setBorder
method.
Constructors
BasicComboBoxRenderer
public BasicComboBoxRenderer()
Methods
getPreferredSize
public Dimension getPreferredSize()
Description copied from class: JComponent
If the preferredSize
has been set to a non-null
value just returns it. If the UI delegate's getPreferredSize
method returns a non null
value then return that; otherwise defer to the component's layout manager.
- Overrides:
-
getPreferredSize
in classJComponent
- Returns:
- the value of the
preferredSize
property - See Also:
-
JComponent.setPreferredSize(java.awt.Dimension)
,ComponentUI
getListCellRendererComponent
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus)
Description copied from interface: ListCellRenderer
Return a component that has been configured to display the specified value. That component's paint
method is then called to "render" the cell. If it is necessary to compute the dimensions of a list because the list cells do not have a fixed size, this method is called to generate a component on which getPreferredSize
can be invoked.
- Specified by:
-
getListCellRendererComponent
in interfaceListCellRenderer
- Parameters:
-
list
- The JList we're painting. -
value
- The value returned by list.getModel().getElementAt(index). -
index
- The cells index. -
isSelected
- True if the specified cell was selected. -
cellHasFocus
- True if the specified cell has the focus. - Returns:
- A component whose paint() method will render the specified value.
- See Also:
-
JList
,ListSelectionModel
,ListModel
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