Module java.desktop

Package java.awt

Class DefaultKeyboardFocusManager

java.lang.Object

java.awt.KeyboardFocusManager

java.awt.DefaultKeyboardFocusManager

All Implemented Interfaces:

KeyEventDispatcher, KeyEventPostProcessor

Direct Known Subclasses:

FocusManager

public class DefaultKeyboardFocusManager
extends KeyboardFocusManager

The default KeyboardFocusManager for AWT applications. Focus traversal is done in response to a Component's focus traversal keys, and using a Container's FocusTraversalPolicy.

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

Since:

1.4

See Also:

FocusTraversalPolicy, Component.setFocusTraversalKeys(int, java.util.Set<? extends java.awt.AWTKeyStroke>), Component.getFocusTraversalKeys(int)

Field Summary

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
DefaultKeyboardFocusManager()	Constructs a DefaultKeyboardFocusManager.

Method Summary

Modifier and Type	Method	Description
protected void	dequeueKeyEvents(long after, Component untilFocused)	Releases for normal dispatching to the current focus owner all KeyEvents which were enqueued because of a call to enqueueKeyEvents with the same timestamp and Component.
protected void	discardKeyEvents(Component comp)	Discards all KeyEvents which were enqueued because of one or more calls to enqueueKeyEvents with the specified Component, or one of its descendants.
boolean	dispatchEvent(AWTEvent e)	This method is called by the AWT event dispatcher requesting that the current KeyboardFocusManager dispatch the specified event on its behalf.
boolean	dispatchKeyEvent(KeyEvent e)	Called by dispatchEvent if no other KeyEventDispatcher in the dispatcher chain dispatched the KeyEvent, or if no other KeyEventDispatchers are registered.
void	downFocusCycle(Container aContainer)	Moves the focus down one focus traversal cycle.
protected void	enqueueKeyEvents(long after, Component untilFocused)	Delays dispatching of KeyEvents until the specified Component becomes the focus owner.
void	focusNextComponent(Component aComponent)	Focuses the Component after aComponent, typically based on a FocusTraversalPolicy.
void	focusPreviousComponent(Component aComponent)	Focuses the Component before aComponent, typically based on a FocusTraversalPolicy.
boolean	postProcessKeyEvent(KeyEvent e)	This method will be called by dispatchKeyEvent.
void	processKeyEvent(Component focusedComponent, KeyEvent e)	This method initiates a focus traversal operation if and only if the KeyEvent represents a focus traversal key for the specified focusedComponent.
void	upFocusCycle(Component aComponent)	Moves the focus up one focus traversal cycle.

Methods declared in class java.awt.KeyboardFocusManager

addKeyEventDispatcher, addKeyEventPostProcessor, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, clearFocusOwner, clearGlobalFocusOwner, downFocusCycle, firePropertyChange,