JavaTM 2 Platform
Standard Ed. 5.0

javax.swing
类 JToolTip

java.lang.Object
  继承者 java.awt.Component
      继承者 java.awt.Container
          继承者 javax.swing.JComponent
              继承者 javax.swing.JToolTip
所有已实现的接口:
ImageObserver, MenuContainer, Serializable, Accessible

public class JToolTip
extends JComponent
implements Accessible

用来显示 Component 的“提示”。通常,组件提供 api,从而将使用 ToolTip 的过程自动化。例如,任何 Swing 组件都可以使用 JComponent setToolTipText 方法来指定一个标准的工具提示文本。需要创建自定义 ToolTip 显示的组件可以重写 JComponentcreateToolTip 方法,并使用此类的一个子类。

有关进一步的文档,请参阅《The Java Tutorial》中的 How to Use Tool Tips 一节。

警告:此类的已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 JavaBeansTM 长期存储的功能。请参见 XMLEncoder

另请参见:
JComponent.setToolTipText(java.lang.String), JComponent.createToolTip()

嵌套类摘要
protected  class JToolTip.AccessibleJToolTip
          此类实现对 JToolTip 类的可访问性支持。
 
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
JToolTip()
          创建一个工具提示。
 
方法摘要
 AccessibleContext getAccessibleContext()
          获取与此 JToolTip 关联的 AccessibleContext。
 JComponent getComponent()
          返回工具提示所描述的组件。
 String getTipText()
          返回显示工具提示时所显示的文本。
 ToolTipUI getUI()
          返回呈现此组件的 L&F 对象。
 String getUIClassID()
          返回呈现此组件的 L&F 类的名称。
protected  String paramString()
          返回此 JToolTip 的字符串表示形式。
 void setComponent(JComponent c)
          指定工具提示所描述的组件。
 void setTipText(String tipText)
          设置显示工具提示时要显示的文本。
 void updateUI()
          从当前外观重置 UI 属性值。
 
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, 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
 
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, 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, 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, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, 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

JToolTip

public JToolTip()
创建一个工具提示。

方法详细信息

getUI

public ToolTipUI getUI()
返回呈现此组件的 L&F 对象。

返回:
呈现此组件的 ToolTipUI 对象

updateUI

public void updateUI()
从当前外观重置 UI 属性值。

覆盖:
JComponent 中的 updateUI
另请参见:
JComponent.updateUI()

getUIClassID

public String getUIClassID()
返回呈现此组件的 L&F 类的名称。

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

setTipText

public void setTipText(String tipText)
设置显示工具提示时要显示的文本。字符串 tipText 可以为 null

参数:
tipText - 要显示的 String

getTipText

public String getTipText()
返回显示工具提示时所显示的文本。返回值可以为 null

返回:
显示的 String

setComponent

public void setComponent(JComponent c)
指定工具提示所描述的组件。组件 c 可以为 null,这时它将是无效的。

这是一个 bound 属性。

参数:
c - 正在描述的 JComponent
另请参见:
JComponent.createToolTip()

getComponent

public JComponent getComponent()
返回工具提示所描述的组件。返回值可以为 null

返回:
工具提示所描述的组件
另请参见:
JComponent.createToolTip()

paramString

protected String paramString()
返回此 JToolTip 的字符串表示形式。此方法仅在进行调试的时候使用,对于各个实现,所返回字符串的内容和格式可能有所不同。返回的字符串可能为空,但不可能为 null

覆盖:
JComponent 中的 paramString
返回:
JToolTip 的字符串表示形式。

getAccessibleContext

public AccessibleContext getAccessibleContext()
获取与此 JToolTip 关联的 AccessibleContext。对于工具提示,AccessibleContext 采用 AccessibleJToolTip 的形式。如有必要,创建一个新的 AccessibleJToolTip 实例。

指定者:
接口 Accessible 中的 getAccessibleContext
覆盖:
JComponent 中的 getAccessibleContext
返回:
一个 AccessibleJToolTip,它充当此 JToolTip 的 AccessibleContext

JavaTM 2 Platform
Standard Ed. 5.0

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有关更多的 API 参考资料和开发人员文档,请参阅 Java 2 SDK SE 开发人员文档。该文档包含更详细的、面向开发人员的描述,以及总体概述、术语定义、使用技巧和工作代码示例。

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