javax.swing

Class FocusManager

java.lang.Object

java.awt.KeyboardFocusManager

java.awt.DefaultKeyboardFocusManager

javax.swing.FocusManager

All Implemented Interfaces:

KeyEventDispatcher， KeyEventPostProcessor

已知直接子类：

DefaultFocusManager

public abstract class FocusManager
extends DefaultKeyboardFocusManager

这类被淘汰的1.4个焦点的API。而客户端的代码仍然可以使用这个类，开发商强烈鼓励使用 java.awt.KeyboardFocusManager和 java.awt.DefaultKeyboardFocusManager相反。

请看 How to Use the Focus Subsystem，java教程中的一部分，和更多的信息Focus Specification。

另请参见：

Focus Specification

Field Summary

Fields

Modifier and Type	Field and Description
static String	FOCUS_MANAGER_CLASS_PROPERTY 这个字段是过时的，它的使用是气馁，因为它的规范是不兼容的1.4个焦点的。

Fields inherited from class java.awt.KeyboardFocusManager

BACKWARD_TRAVERSAL_KEYS, DOWN_CYCLE_TRAVERSAL_KEYS, FORWARD_TRAVERSAL_KEYS, UP_CYCLE_TRAVERSAL_KEYS

构造方法摘要

构造方法

Constructor and Description
FocusManager()

方法摘要

Modifier and Type	Method and Description
static void	disableSwingFocusManager() 过时的。 截至1.4日，由KeyboardFocusManager.setDefaultFocusTraversalPolicy(FocusTraversalPolicy)
static FocusManager	getCurrentManager() 返回调用线程的上下文的当前 KeyboardFocusManager实例。
static boolean	isFocusManagerEnabled() 过时的。 截至1.4日，由KeyboardFocusManager.getDefaultFocusTraversalPolicy()
static void	setCurrentManager(FocusManager aFocusManager) 设置为调用线程的上下文的当前 KeyboardFocusManager实例。

Methods inherited from class java.awt.DefaultKeyboardFocusManager

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

Methods inherited from 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 inherited from class java.lang.Object

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

Field Detail

FOCUS_MANAGER_CLASS_PROPERTY

public static final String FOCUS_MANAGER_CLASS_PROPERTY

这个字段是过时的，它的使用是气馁，因为它的规范是不兼容的1.4个焦点的。目前focusmanager不再是UI属性。客户端代码必须使用 KeyboardFocusManager.getCurrentKeyboardFocusManager()查询当前focusmanager。看到集中规范的更多信息。

另请参见：

KeyboardFocusManager.getCurrentKeyboardFocusManager()， Focus Specification， Constant Field Values

Constructor Detail

FocusManager

public FocusManager()

方法详细信息

getCurrentManager

public static FocusManager getCurrentManager()

返回调用线程的上下文的当前 KeyboardFocusManager实例。

结果

这个线程的上下文的 KeyboardFocusManager

另请参见：

setCurrentManager(javax.swing.FocusManager)

setCurrentManager

public static void setCurrentManager(FocusManager aFocusManager)
                              throws SecurityException

设置为调用线程的上下文的当前 KeyboardFocusManager实例。如果 null指定，则当前 KeyboardFocusManager与 DefaultKeyboardFocusManager新实例替换。

如果安装了SecurityManager，调用线程必须被授予AWTPermission”replacekeyboardfocusmanager”以取代目前的KeyboardFocusManager。如果没有得到许可，该方法将抛出一个SecurityException，和目前的KeyboardFocusManager将保持不变。

参数

aFocusManager -新的 KeyboardFocusManager这个线程的上下文

异常

SecurityException如果调用线程不允许替换当前的 KeyboardFocusManager

另请参见：

getCurrentManager()， DefaultKeyboardFocusManager

disableSwingFocusManager

@Deprecated
public static void disableSwingFocusManager()

过时的。 截至1.4日，由KeyboardFocusManager.setDefaultFocusTraversalPolicy(FocusTraversalPolicy)

改变当前 KeyboardFocusManager的默认 FocusTraversalPolicy到 DefaultFocusTraversalPolicy。

另请参见：

DefaultFocusTraversalPolicy， KeyboardFocusManager.setDefaultFocusTraversalPolicy(java.awt.FocusTraversalPolicy)

isFocusManagerEnabled

@Deprecated
public static boolean isFocusManagerEnabled()

过时的。 截至1.4日，由KeyboardFocusManager.getDefaultFocusTraversalPolicy()

返回应用程序是否被 disableSwingFocusManager()。

另请参见：

disableSwingFocusManager()