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<Object> ， SwingConstants

已知直接子类：

BasicComboBoxRenderer.UIResource
```
public class BasicComboBoxRenderer
extends JLabel
implements ListCellRenderer<Object>, Serializable
```
ComboBox渲染器
警告：此类的序列化对象与将来的Swing版本不兼容。当前的序列化支持适用于运行相同版本的Swing的应用程序之间的短期存储或RMI。从1.4开始，支持所有JavaBeans的长期存储已被添加到java.beans包中。请参阅XMLEncoder 。

另请参见：

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	描述
`static class`	`BasicComboBoxRenderer.UIResource`	BasicComboBoxRenderer的子类实现UIResource。

Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class javax.swing.JLabel
JLabel.AccessibleJLabel

Field Summary

Fields
Modifier and Type	Field	描述
`protected static Border`	`noFocusBorder`	一个空的 `Border` 。

Fields inherited from class java.awt.Component
accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Fields inherited from class javax.swing.JComponent
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class javax.swing.JLabel
labelFor

Fields inherited from interface javax.swing.SwingConstants
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

构造方法摘要

构造方法
Constructor	描述
`BasicComboBoxRenderer()`	构造一个新的实例 `BasicComboBoxRenderer` 。

方法摘要

所有方法接口方法具体的方法
Modifier and Type	方法	描述
`Component`	`getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected, boolean cellHasFocus)`	返回已配置为显示指定值的组件。
`Dimension`	`getPreferredSize()`	如果 `preferredSize`已经设置为非 `null`返回值。

Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细信息
  - noFocusBorder
```
protected static Border noFocusBorder
```
    一个空的Border 。此字段可能不会被使用。要改变Border通过此渲染器用于使用所述直接设置它setBorder方法。
- 构造方法详细信息
  - BasicComboBoxRenderer
```
public BasicComboBoxRenderer()
```
    构造新的实例 BasicComboBoxRenderer 。
- 方法详细信息
  - getPreferredSize
```
public Dimension getPreferredSize()
```
    描述从类复制： JComponent
    
    如果preferredSize已经被设置为非null值只是返回它。如果UI getPreferredSize的getPreferredSize方法返回一个非null值，那么返回那个; 否则推迟到组件的布局管理器。
    
    重写：
    
    getPreferredSize在 JComponent
    
    结果
    
    该值为 preferredSize属性
    
    另请参见：
    
    JComponent.setPreferredSize(java.awt.Dimension) ， ComponentUI
  - getListCellRendererComponent
```
public Component getListCellRendererComponent(JList<?> list,
                                              Object value,
                                              int index,
                                              boolean isSelected,
                                              boolean cellHasFocus)
```
    描述从接口ListCellRenderer复制
    
    返回已配置为显示指定值的组件。然后调用该组件的paint方法“渲染”单元。如果需要计算列表的维度，因为列表单元格不具有固定的大小，则会调用此方法来生成可以调用其的组件，其中可以调用getPreferredSize 。
    
    Specified by:
    
    getListCellRendererComponent在接口 ListCellRenderer<Object>
    
    参数
    
    list - 我们正在画的JList。
    
    value - 由list.getModel（）返回的值getElementAt（index）。
    
    index - 细胞指数。
    
    isSelected - 如果指定的单元格被选中， isSelected真。
    
    cellHasFocus - 如果指定的单元格具有焦点， cellHasFocus真。
    
    结果
    
    其paint（）方法将呈现指定值的组件。
    
    另请参见：
    
    JList ， ListSelectionModel ， ListModel

Class BasicComboBoxRenderer

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Component

Nested classes/interfaces inherited from class java.awt.Container

Nested classes/interfaces inherited from class javax.swing.JComponent

Nested classes/interfaces inherited from class javax.swing.JLabel

Field Summary

Fields inherited from class java.awt.Component

Fields inherited from interface java.awt.image.ImageObserver

Fields inherited from class javax.swing.JComponent

Fields inherited from class javax.swing.JLabel

Fields inherited from interface javax.swing.SwingConstants

构造方法摘要

方法摘要

Methods inherited from class java.awt.Component

Methods inherited from class java.awt.Container

Methods inherited from class javax.swing.JComponent

Methods inherited from class javax.swing.JLabel

Methods inherited from class java.lang.Object

字段详细信息

noFocusBorder

构造方法详细信息

BasicComboBoxRenderer

方法详细信息

getPreferredSize

getListCellRendererComponent