Module java.desktop

Package javax.swing

Class DefaultFocusManager

java.lang.Object

java.awt.KeyboardFocusManager

java.awt.DefaultKeyboardFocusManager

javax.swing.FocusManager

javax.swing.DefaultFocusManager

所有已实现的接口:

KeyEventDispatcher, KeyEventPostProcessor

       public class DefaultFocusManager extends FocusManager
      

该类已被1.4焦点API所淘汰。虽然客户端代码仍然可以使用这个类，但强烈建议开发人员改用java.awt.KeyboardFocusManager和java.awt.DefaultKeyboardFocusManager。

请参阅 如何使用焦点子系统，这是Java教程中的一个章节，以及焦点规范获取更多信息。

自版本:

1.2

Field Summary

Fields declared in class javax.swing.FocusManager

FOCUS_MANAGER_CLASS_PROPERTY

Fields declared in class java.awt.KeyboardFocusManager

BACKWARD_TRAVERSAL_KEYS, DOWN_CYCLE_TRAVERSAL_KEYS, FORWARD_TRAVERSAL_KEYS, UP_CYCLE_TRAVERSAL_KEYS

Constructor Summary

Constructors

Constructor	Description
DefaultFocusManager()	构造一个DefaultFocusManager。

Method Summary

Modifier and Type	Method	Description
boolean	compareTabOrder(Component a, Component b)	按照它们的焦点遍历顺序比较组件。
Component	getComponentAfter(Container aContainer, Component aComponent)	返回后面的组件。
Component	getComponentBefore(Container aContainer, Component aComponent)	返回前面的组件。
Component	getFirstComponent(Container aContainer)	返回第一个组件。
Component	getLastComponent(Container aContainer)	返回最后一个组件。

Methods declared in class javax.swing.FocusManager

disableSwingFocusManager, getCurrentManager, isFocusManagerEnabled, setCurrentManager

Methods declared in class java.awt.DefaultKeyboardFocusManager

dequeueKeyEvents, discardKeyEvents, dispatchEvent, dispatchKeyEvent, downFocusCycle, enqueueKeyEvents, focusNextComponent, focusPreviousComponent, postProcessKeyEvent, processKeyEvent, upFocusCycle

Methods declared in class java.awt.KeyboardFocusManager

addKeyEventDispatcher, addKeyEventPostProcessor, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, clearFocusOwner, clearGlobalFocusOwner, downFocusCycle, firePropertyChange, fireVetoableChange, focusNextComponent, focusPreviousComponent, getActiveWindow, getCurrentFocusCycleRoot, getCurrentKeyboardFocusManager, getDefaultFocusTraversalKeys, getDefaultFocusTraversalPolicy, getFocusedWindow, getFocusOwner, getGlobalActiveWindow, getGlobalCurrentFocusCycleRoot, getGlobalFocusedWindow, getGlobalFocusOwner, getGlobalPermanentFocusOwner, getKeyEventDispatchers, getKeyEventPostProcessors, getPermanentFocusOwner, getPropertyChangeListeners, getPropertyChangeListeners, getVetoableChangeListeners, getVetoableChangeListeners, redispatchEvent, removeKeyEventDispatcher, removeKeyEventPostProcessor, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener, setCurrentKeyboardFocusManager, setDefaultFocusTraversalKeys, setDefaultFocusTraversalPolicy, setGlobalActiveWindow, setGlobalCurrentFocusCycleRoot, setGlobalFocusedWindow, setGlobalFocusOwner, setGlobalPermanentFocusOwner, upFocusCycle

Methods declared in class java.lang.Object

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

Constructor Details

DefaultFocusManager

             public DefaultFocusManager()
            

构造一个DefaultFocusManager。

Method Details

getComponentAfter

             public Component getComponentAfter(Container aContainer, Component aComponent)
            

返回后面的组件。

参数:

aContainer - 一个容器

aComponent - 一个组件

返回:

后面的组件

getComponentBefore

             public Component getComponentBefore(Container aContainer, Component aComponent)
            

返回前面的组件。

参数:

aContainer - 一个容器

aComponent - 一个组件

返回:

前面的组件

getFirstComponent

             public Component getFirstComponent(Container aContainer)
            

返回第一个组件。

参数:

aContainer - 一个容器

返回:

第一个组件

getLastComponent

             public Component getLastComponent(Container aContainer)
            

返回最后一个组件。

参数:

aContainer - 一个容器

返回:

最后一个组件

compareTabOrder

             public boolean compareTabOrder(Component a, Component b)
            

按照它们的焦点遍历顺序比较组件。

参数:

a - 第一个组件

b - 第二个组件

返回:

按照它们的焦点遍历顺序比较的组件比较结果