Class java.awt.event.FocusEvent





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Class java.awt.event.FocusEvent


java.lang.Object
|
+----java.util.EventObject
|
+----java.awt.AWTEvent
|
+----java.awt.event.ComponentEvent
|
+----java.awt.event.FocusEvent



public class FocusEvent
extends ComponentEvent

The component-level focus event.
There are two levels of focus change events: permanent and temporary.
Permanent focus change events occur when focus is directly moved
from one component to another, such as through calls to requestFocus()
or as the user uses the Tab key to traverse components.
Temporary focus change events occur when focus is temporarily
gained or lost for a component as the indirect result of another
operation, such as window deactivation or a scrollbar drag. In this
case, the original focus state will automatically be restored once
that operation is finished, or, for the case of window deactivation,
when the window is reactivated. Both permanent and temporary focus
events are delivered using the FOCUS_GAINED and FOCUS_LOST event ids;
the levels may be distinguished in the event using the isTemporary()
method.








FOCUS_FIRST
Marks the first integer id for the range of focus event ids.

FOCUS_GAINED
The focus gained event type.

FOCUS_LAST
Marks the last integer id for the range of focus event ids.

FOCUS_LOST
The focus lost event type.






FocusEvent(Component, int)
Constructs a permanent-level FocusEvent object with the
specified source component and type.

FocusEvent(Component, int, boolean)
Constructs a FocusEvent object with the specified source component,
type, and whether or not the focus event is a temporary level event.






isTemporary()
Returns whether or not this focus change event is a temporary
change.

paramString()







FOCUS_FIRST

public static final int FOCUS_FIRST


Marks the first integer id for the range of focus event ids.


FOCUS_LAST

public static final int FOCUS_LAST


Marks the last integer id for the range of focus event ids.


FOCUS_GAINED

public static final int FOCUS_GAINED


The focus gained event type.


FOCUS_LOST

public static final int FOCUS_LOST


The focus lost event type.







FocusEvent

public FocusEvent(Component source,
int id,
boolean temporary)


Constructs a FocusEvent object with the specified source component,
type, and whether or not the focus event is a temporary level event.


Parameters:
source - the object where the event originated



FocusEvent

public FocusEvent(Component source,
int id)


Constructs a permanent-level FocusEvent object with the
specified source component and type.


Parameters:
source - the object where the event originated







isTemporary

public boolean isTemporary()


Returns whether or not this focus change event is a temporary
change.



paramString

public String paramString()



Overrides:
paramString in class ComponentEvent




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