Module java.desktop

软件包 javax.swing.plaf.basic

Class BasicInternalFrameTitlePane.SystemMenuBar

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JMenuBar

javax.swing.plaf.basic.BasicInternalFrameTitlePane.SystemMenuBar

All Implemented Interfaces:

ImageObserver ， MenuContainer ， Serializable ， Accessible ， MenuElement

Enclosing class:

BasicInternalFrameTitlePane

public class BasicInternalFrameTitlePane.SystemMenuBar
extends JMenuBar

这个类应该被视为一个“受保护”的内部类。 仅在Foo子类中实例化。

另请参见：

Serialized Form

Nested Class Summary

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.JMenuBar

JMenuBar.AccessibleJMenuBar

Field Summary

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

构造方法摘要

构造方法

Constructor	描述
SystemMenuBar()

方法摘要

Modifier and Type	方法	描述
boolean	isFocusTraversable()	返回这个 Component是否可以成为焦点所有者。
boolean	isOpaque()	如果此组件完全不透明，则返回true。
void	paint(Graphics g)	由Swing调用来绘制组件。
void	requestFocus()	请求 Component获取输入焦点。

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, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, 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, 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, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, 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 javax.swing.JMenuBar

add, addNotify, getAccessibleContext, getComponent, getComponentAtIndex, getComponentIndex, getHelpMenu, getMargin, getMenu, getMenuCount, getSelectionModel, getSubElements, getUI, getUIClassID, isBorderPainted, isSelected, menuSelectionChanged, paintBorder, paramString, processKeyBinding, processKeyEvent, processMouseEvent, removeNotify, setBorderPainted, setHelpMenu, setMargin, setSelected, setSelectionModel, setUI, updateUI

Methods inherited from class java.lang.Object

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

构造方法详细信息

SystemMenuBar

public SystemMenuBar()

方法详细信息

isFocusTraversable

public boolean isFocusTraversable()

描述从类复制： Component

返回这个 Component是否可以成为焦点所有者。

重写：

isFocusTraversable在 Component

结果

true如果这个Component是可Component的; 否则为false

另请参见：

Component.setFocusable(boolean)

requestFocus

public void requestFocus()

描述从类复制： JComponent

要求这个Component得到输入焦点。 有关此方法的完整说明，请参阅Component.requestFocus() 。

请注意，不鼓励使用此方法，因为它的行为是平台依赖的。 相反，我们推荐使用requestFocusInWindow() 。 如果您想了解更多关于焦点的信息，请参阅“Java教程”中的“ How to Use the Focus Subsystem ”一节。

重写：

requestFocus在 JComponent

另请参见：

Component.requestFocusInWindow() ， Component.requestFocusInWindow(boolean)

paint

public void paint(Graphics g)

描述从类复制： JComponent

由Swing调用来绘制组件。 应用程序不应直接调用paint ，而应使用repaint方法来调度组件进行重绘。

这种方法实际上委托绘画的工作，三个受保护的方法： paintComponent ， paintBorder ，并paintChildren 。 它们按列出的顺序调用，以确保孩子出现在组件本身的顶部。 一般来说，组件及其孩子不应在分配给边界的插页区域中绘制。 子类可以像以前一样覆盖此方法。 一个只想要专门化UI（外观和感觉）的子类，委托人的paint方法应该只是覆盖paintComponent 。

重写：

paint在 JComponent

参数

g - 要绘画的 Graphics上下文

另请参见：

JComponent.paintComponent(java.awt.Graphics) ， JComponent.paintBorder(java.awt.Graphics) ， JComponent.paintChildren(java.awt.Graphics) ， JComponent.getComponentGraphics(java.awt.Graphics) ， JComponent.repaint(long, int, int, int, int)

isOpaque

public boolean isOpaque()

描述从类复制： JComponent

如果此组件完全不透明，则返回true。

不透明组件描绘其矩形界限内的每个像素。 非不透明组件仅绘制其像素的子集，或者根本不绘制其子像素，允许其下方的像素“显示”。 因此，不完全绘制其像素的组件提供了一定程度的透明度。

保证总是完全绘制内容的子类应该覆盖此方法并返回true。

重写：

isOpaque在 JComponent

结果

如果此组件完全不透明，则为true

另请参见：

JComponent.setOpaque(boolean)