Java javax.swing 类 JPopupMenu（JDK5）

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摘要：嵌套 | 字段 | 构造方法 | 方法

详细信息：字段 | 构造方法 | 方法

javax.swing
类 JPopupMenu

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPopupMenu

所有已实现的接口：: ImageObserver, MenuContainer, Serializable, Accessible, MenuElement

直接已知子类：: BasicComboPopup

public class JPopupMenu
extends JComponent

implements Accessible, MenuElement
extends JComponent
implements Accessible, MenuElement

弹出菜单的实现，弹出菜单是一个可弹出并显示一系列选项的小窗口。JPopupMenu 用于用户在菜单栏上选择项时显示的菜单。它还用于当用户选择菜单项并激活它时显示的“右拉式 (pull-right)”菜单。最后，JPopupMenu 还可以在想让菜单显示的任何其他位置使用。例如，当用户在指定区域中右击时。

有关使用弹出菜单的示例的信息，请参阅《The Java Tutorial》中的 How to Use Menus。

警告：此类的序列化对象与以后的 Swing 版本不兼容。当前序列化支持适用于短期存储，或适用于在运行相同 Swing 版本的应用程序之间进行 RMI（Remote Method Invocation，远程方法调用）。从 1.4 版本开始，已在 java.beans 包中添加了支持所有 JavaBeans^TM 长期存储的功能。请参见 XMLEncoder。

嵌套类摘要
`protected class`	`JPopupMenu.AccessibleJPopupMenu` 此类实现 `JPopupMenu` 类的可访问性支持。
`static class`	`JPopupMenu.Separator` 弹出与菜单有关的分隔符。

从类 javax.swing.JComponent 继承的嵌套类/接口
`JComponent.AccessibleJComponent`

从类 java.awt.Container 继承的嵌套类/接口
`Container.AccessibleAWTContainer`

从类 java.awt.Component 继承的嵌套类/接口
`Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy`

字段摘要

从类 javax.swing.JComponent 继承的字段
`accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

从类 java.awt.Component 继承的字段
`BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT`

从接口 java.awt.image.ImageObserver 继承的字段
`ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH`

构造方法摘要
`JPopupMenu()` 构造一个不带“调用者”的 `JPopupMenu`。
`JPopupMenu(String label)` 构造一个具有指定标题的 `JPopupMenu`。

方法摘要
`JMenuItem`	`add(Action a)` 将指派指定 `Action` 对象的新菜单项追加到菜单的末尾。
`JMenuItem`	`add(JMenuItem menuItem)` 将指定菜单项追加到此菜单的末尾。
`JMenuItem`	`add(String s)` 创建具有指定文本的菜单项，并将其追加到此菜单的末尾。
`void`	`addMenuKeyListener(MenuKeyListener l)` 将 `MenuKeyListener` 添加到弹出菜单。
`void`	`addPopupMenuListener(PopupMenuListener l)` 添加 `PopupMenu` 侦听器。
`void`	`addSeparator()` 将新分隔符追加到菜单的末尾。
`protected PropertyChangeListener`	`createActionChangeListener(JMenuItem b)` 返回一个正确配置的 `PropertyChangeListener`，它在 `Action` 发生更改时更新控件。
`protected JMenuItem`	`createActionComponent(Action a)` 该工厂方法为添加到 `JPopupMenu` 的 `Action` 创建对应的 `JMenuItem`。
`protected void`	`firePopupMenuCanceled()` 通知 `PopupMenuListener` 此弹出菜单将被取消。
`protected void`	`firePopupMenuWillBecomeInvisible()` 通知 `PopupMenuListener` 此弹出菜单将变得不可见。
`protected void`	`firePopupMenuWillBecomeVisible()` 通知 `PopupMenuListener` 此弹出菜单将变得可见。
`AccessibleContext`	`getAccessibleContext()` 获取与此 JPopupMenu 关联的 AccessibleContext。
`Component`	`getComponent()` 返回此 `JPopupMenu` 组件。
`Component`	`getComponentAtIndex(int i)` 已过时。由 `getComponent(int i)` 取代
`int`	`getComponentIndex(Component c)` 返回指定组件的索引。
`static boolean`	`getDefaultLightWeightPopupEnabled()` 获取 `defaultLightWeightPopupEnabled` 属性，默认情况下，该属性为 `true`。
`Component`	`getInvoker()` 返回作为此弹出菜单的“调用者”的组件。
`String`	`getLabel()` 返回弹出菜单的标签
`Insets`	`getMargin()` 返回弹出菜单的边框与其包含内容之间的空白（以像素表示）。
`MenuKeyListener[]`	`getMenuKeyListeners()` 返回利用 addMenuKeyListener() 添加到此 JPopupMenu 的所有 `MenuKeyListener` 组成的数组。
`PopupMenuListener[]`	`getPopupMenuListeners()` 返回利用 addPopupMenuListener() 添加到此 JMenuItem 的所有 `PopupMenuListener` 组成的数组。
`SingleSelectionModel`	`getSelectionModel()` 返回处理单个选择的模型对象。
`MenuElement[]`	`getSubElements()` 返回 `MenuElement` 组成的数组，包含此菜单组件的子菜单。
`PopupMenuUI`	`getUI()` 返回用于呈现此组件的外观 (L&F) 对象。
`String`	`getUIClassID()` 返回用于呈现此组件的 L&F 类名。
`void`	`insert(Action a, int index)` 在给定位置插入对应于指定 `Action` 对象的菜单项。
`void`	`insert(Component component, int index)` 将指定组件插入到菜单的给定位置。
`boolean`	`isBorderPainted()` 检查是否应该绘制边框。
`boolean`	`isLightWeightPopupEnabled()` 获取 `lightWeightPopupEnabled` 属性。
`boolean`	`isPopupTrigger(MouseEvent e)` 如果 `JPopupMenu` 的当前安装 UI 将 `MouseEvent` 视为弹出菜单触发器，则返回 true。
`boolean`	`isVisible()` 如果弹出菜单可见（当前显示的），则返回 true。
`void`	`menuSelectionChanged(boolean isIncluded)` 当菜单栏选择发生更改以激活或取消激活此菜单时传递消息。
`void`	`pack()` 布置容器，让它使用显示其内容所需的最小空间。
`protected void`	`paintBorder(Graphics g)` 如果 `borderPainted` 属性为 `true`，则绘制弹出菜单的边框。
`protected String`	`paramString()` 返回此 `JPopupMenu` 的字符串表示形式。
`protected void`	`processFocusEvent(FocusEvent evt)` 处理组件上发生的焦点事件，方法是将其指派到任意已注册的 `FocusListener` 对象。
`protected void`	`processKeyEvent(KeyEvent evt)` 处理快捷键事件，如助记符和加速器。
`void`	`processKeyEvent(KeyEvent e, MenuElement[] path, MenuSelectionManager manager)` 通过使用 `MenuSelectionManager` 的 API 处理从 `MenuSelectionManager` 转发的键事件，并在需要时更改菜单选择。
`void`	`processMouseEvent(MouseEvent event, MenuElement[] path, MenuSelectionManager manager)` 要求此方法遵守 `MenuElement` 接口，但它没有被实现。
`void`	`remove(int pos)` 从此弹出菜单移除指定索引处的组件。
`void`	`removeMenuKeyListener(MenuKeyListener l)` 从弹出菜单移除 `MenuKeyListener`。
`void`	`removePopupMenuListener(PopupMenuListener l)` 移除 `PopupMenu` 侦听器。
`void`	`setBorderPainted(boolean b)` 设置是否应该绘制边框。
`static void`	`setDefaultLightWeightPopupEnabled(boolean aFlag)` 设置 `lightWeightPopupEnabled` 属性的默认值。
`void`	`setInvoker(Component invoker)` 设置弹出菜单的调用者，即弹出菜单在其中显示的组件。
`void`	`setLabel(String label)` 设置弹出菜单的标签。
`void`	`setLightWeightPopupEnabled(boolean aFlag)` 设置 `lightWeightPopupEnabled` 属性的值，默认情况下该值为 `true`。
`void`	`setLocation(int x, int y)` 使用 X、Y 坐标设置弹出菜单的左上角的位置。
`void`	`setPopupSize(Dimension d)` 使用 `Dimension` 对象设置弹出窗口的大小。
`void`	`setPopupSize(int width, int height)` 将弹出窗口的大小设置为指定的宽度和高度。
`void`	`setSelected(Component sel)` 设置当前选择的组件，此方法将更改选择模型。
`void`	`setSelectionModel(SingleSelectionModel model)` 设置处理单个选择的模型对象。
`void`	`setUI(PopupMenuUI ui)` 设置呈现此组件的 L&F 对象。
`void`	`setVisible(boolean b)` 设置弹出菜单的可见性。
`void`	`show(Component invoker, int x, int y)` 在组件调用者的坐标空间中的位置 X、Y 显示弹出菜单。
`void`	`updateUI()` 将 UI 属性重置为一个当前外观对应的值。

从类 javax.swing.JComponent 继承的方法
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, 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, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, 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, unregisterKeyboardAction, update

从类 javax.swing.JComponent 继承的方法

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, 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, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, 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, unregisterKeyboardAction, update

从类 java.awt.Container 继承的方法
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, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

从类 java.awt.Container 继承的方法

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, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

从类 java.awt.Component 继承的方法
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, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

从类 java.awt.Component 继承的方法

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, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

从类 java.lang.Object 继承的方法
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

构造方法详细信息

JPopupMenu

public JPopupMenu()

构造一个不带“调用者”的 JPopupMenu。

JPopupMenu

public JPopupMenu(String label)

构造一个具有指定标题的 JPopupMenu。

参数：: label - 可以被 UI 用作弹出菜单的标题显示的字符串。

方法详细信息

setDefaultLightWeightPopupEnabled

public static void setDefaultLightWeightPopupEnabled(boolean aFlag)

设置 lightWeightPopupEnabled 属性的默认值。

参数：: aFlag - 如果弹出菜单为轻量级，则为 true；否则为 false
另请参见：: getDefaultLightWeightPopupEnabled(), setLightWeightPopupEnabled(boolean)

getDefaultLightWeightPopupEnabled

public static boolean getDefaultLightWeightPopupEnabled()

获取 defaultLightWeightPopupEnabled 属性，默认情况下，该属性为 true。

返回：: defaultLightWeightPopupEnabled 属性的值
另请参见：: setDefaultLightWeightPopupEnabled(boolean)

getUI

public PopupMenuUI getUI()

返回用于呈现此组件的外观 (L&F) 对象。

返回：: 呈现此组件的 PopupMenuUI 对象

setUI

public void setUI(PopupMenuUI ui)

设置呈现此组件的 L&F 对象。

参数：: ui - 新 PopupMenuUI L&F 对象
另请参见：: UIDefaults.getUI(javax.swing.JComponent)

updateUI

public void updateUI()

将 UI 属性重置为一个当前外观对应的值。

覆盖：: 类 JComponent 中的 updateUI

另请参见：: JComponent.updateUI()

getUIClassID

public String getUIClassID()

返回用于呈现此组件的 L&F 类名。

覆盖：: 类 JComponent 中的 getUIClassID

返回：: 字符串 "PopupMenuUI"
另请参见：: JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)

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