FocusManager (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Ed. 5.0

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javax.swing
Class FocusManager

java.lang.Object
  java.awt.KeyboardFocusManager
      java.awt.DefaultKeyboardFocusManager
          javax.swing.FocusManager

All Implemented Interfaces:: KeyEventDispatcher, KeyEventPostProcessor

Direct Known Subclasses:: DefaultFocusManager

public abstract class FocusManager
extends DefaultKeyboardFocusManager
extends DefaultKeyboardFocusManager

This class has been obsoleted by the 1.4 focus APIs. While client code may still use this class, developers are strongly encouraged to use java.awt.KeyboardFocusManager and java.awt.DefaultKeyboardFocusManager instead.

Please see How to Use the Focus Subsystem, a section in The Java Tutorial, and the Focus Specification for more information.

See Also:: Focus Specification

Field Summary

static String FOCUS_MANAGER_CLASS_PROPERTY
          This field is obsolete, and its use is discouraged since its specification is incompatible with the 1.4 focus APIs.

Fields inherited from class java.awt.KeyboardFocusManager

BACKWARD_TRAVERSAL_KEYS, DOWN_CYCLE_TRAVERSAL_KEYS, FORWARD_TRAVERSAL_KEYS, UP_CYCLE_TRAVERSAL_KEYS

Constructor Summary

FocusManager()


Method Summary

static void disableSwingFocusManager()
          Deprecated. as of 1.4, replaced by KeyboardFocusManager.setDefaultFocusTraversalPolicy(FocusTraversalPolicy)

static FocusManager getCurrentManager()
          Returns the current KeyboardFocusManager instance for the calling thread's context.

static boolean isFocusManagerEnabled()
          Deprecated. As of 1.4, replaced by KeyboardFocusManager.getDefaultFocusTraversalPolicy()

static void setCurrentManager(FocusManager aFocusManager)
          Sets the current KeyboardFocusManager instance for the calling thread's context.

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, 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 Summary
`static String`	`FOCUS_MANAGER_CLASS_PROPERTY` This field is obsolete, and its use is discouraged since its specification is incompatible with the 1.4 focus APIs.

Fields inherited from class java.awt.KeyboardFocusManager
`BACKWARD_TRAVERSAL_KEYS, DOWN_CYCLE_TRAVERSAL_KEYS, FORWARD_TRAVERSAL_KEYS, UP_CYCLE_TRAVERSAL_KEYS`

Constructor Summary
`FocusManager()`

Method Summary
`static void`	`disableSwingFocusManager()` Deprecated. as of 1.4, replaced by `KeyboardFocusManager.setDefaultFocusTraversalPolicy(FocusTraversalPolicy)`
`static FocusManager`	`getCurrentManager()` Returns the current `KeyboardFocusManager` instance for the calling thread's context.
`static boolean`	`isFocusManagerEnabled()` Deprecated. As of 1.4, replaced by `KeyboardFocusManager.getDefaultFocusTraversalPolicy()`
`static void`	`setCurrentManager(FocusManager aFocusManager)` Sets the current `KeyboardFocusManager` instance for the calling thread's context.

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, 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

This field is obsolete, and its use is discouraged since its specification is incompatible with the 1.4 focus APIs. The current FocusManager is no longer a property of the UI. Client code must query for the current FocusManager using KeyboardFocusManager.getCurrentKeyboardFocusManager(). See the Focus Specification for more information.

See Also:: KeyboardFocusManager.getCurrentKeyboardFocusManager(), Focus Specification, Constant Field Values

Constructor Detail

FocusManager

public FocusManager()

Method Detail

getCurrentManager

public static FocusManager getCurrentManager()

Returns the current KeyboardFocusManager instance for the calling thread's context.

Returns:: this thread's context's KeyboardFocusManager
See Also:: setCurrentManager(javax.swing.FocusManager)

setCurrentManager

public static void setCurrentManager(FocusManager aFocusManager)
                              throws SecurityException

Sets the current KeyboardFocusManager instance for the calling thread's context. If null is specified, then the current KeyboardFocusManager is replaced with a new instance of DefaultKeyboardFocusManager.

If a SecurityManager is installed, the calling thread must be granted the AWTPermission "replaceKeyboardFocusManager" in order to replace the the current KeyboardFocusManager. If this permission is not granted, this method will throw a SecurityException, and the current KeyboardFocusManager will be unchanged.

Parameters:: aFocusManager - the new KeyboardFocusManager for this thread's context
Throws:: SecurityException - if the calling thread does not have permission to replace the current KeyboardFocusManager
See Also:: getCurrentManager(), DefaultKeyboardFocusManager

disableSwingFocusManager

@Deprecated
public static void disableSwingFocusManager()

Deprecated. as of 1.4, replaced by KeyboardFocusManager.setDefaultFocusTraversalPolicy(FocusTraversalPolicy)

Changes the current KeyboardFocusManager's default FocusTraversalPolicy to DefaultFocusTraversalPolicy.

See Also:: DefaultFocusTraversalPolicy, KeyboardFocusManager.setDefaultFocusTraversalPolicy(java.awt.FocusTraversalPolicy)

isFocusManagerEnabled

@Deprecated
public static boolean isFocusManagerEnabled()

Deprecated. As of 1.4, replaced by KeyboardFocusManager.getDefaultFocusTraversalPolicy()

Returns whether the application has invoked disableSwingFocusManager().

See Also:: disableSwingFocusManager()