Module java.desktop

Package javax.swing.plaf.metal

Class MetalMenuBarUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.MenuBarUI

javax.swing.plaf.basic.BasicMenuBarUI

javax.swing.plaf.metal.MetalMenuBarUI

       public class MetalMenuBarUI extends BasicMenuBarUI
      

MenuBarUI的Metal实现。该类负责为JMenuBar提供Metal外观。

自版本:

1.5

参见:

• MenuBarUI

Field Summary

Fields declared in class javax.swing.plaf.basic.BasicMenuBarUI

changeListener, containerListener, menuBar

Constructor Summary

Constructors

Constructor	Description
MetalMenuBarUI()	构造一个MetalMenuBarUI。

Method Summary

Modifier and Type	Method	Description
static ComponentUI	createUI(JComponent x)	为传入的组件创建ComponentUI实现。
void	installUI(JComponent c)	配置指定组件以适应Metal外观。
void	uninstallUI(JComponent c)	撤消在installUI期间对指定组件执行的配置。
void	update(Graphics g, JComponent c)	如有必要，绘制组件的背景，然后调用paint。

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

createChangeListener, createContainerListener, installDefaults, installKeyboardActions, installListeners, uninstallDefaults, uninstallKeyboardActions, uninstallListeners

Methods declared in class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, paint

Methods declared in class java.lang.Object

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

Constructor Details

MetalMenuBarUI

             public MetalMenuBarUI()
            

构造一个MetalMenuBarUI。

Method Details

createUI

             public static ComponentUI createUI(JComponent x)
            

为传入的组件创建ComponentUI实现。

参数:

x - 要为其创建ComponentUI实现的JComponent

返回:

x的ComponentUI实现

抛出:

NullPointerException - 如果x为null

installUI

             public void installUI(JComponent c)
            

配置指定组件以适应Metal外观。

覆盖:

installUI 在类 ComponentUI中

参数:

c - 正在安装此UI委托的组件

抛出:

NullPointerException - 如果c为null

参见:

• ComponentUI.uninstallUI(javax.swing.JComponent)
• JComponent.setUI(javax.swing.plaf.ComponentUI)
• JComponent.updateUI()

uninstallUI

             public void uninstallUI(JComponent c)
            

撤消在installUI期间对指定组件执行的配置。

覆盖:

uninstallUI 在类 ComponentUI中

参数:

c - 正在安装此UI委托的组件

抛出:

NullPointerException - 如果c为null

参见:

• ComponentUI.installUI(javax.swing.JComponent)
• JComponent.updateUI()

update

             public void update(Graphics g, JComponent c)
            

如有必要，绘制组件的背景，然后调用paint。

覆盖:

update 在类 ComponentUI中

参数:

g - 要绘制的Graphics

c - 正在绘制的JComponent

抛出:

NullPointerException - 如果g或c为null

自版本:

1.5

参见:

• ComponentUI.update(java.awt.Graphics, javax.swing.JComponent)
• ComponentUI.paint(java.awt.Graphics, javax.swing.JComponent)