|
Préférences
Moteurs de recherche
|
|||||||||||||||||||||||||||||||||||||
JavaTM 2 Platform Std. Ed. v1.6.0
java.awt.event
|
Field Summary | |
---|---|
static int |
FOCUS_FIRST
The first number in the range of ids used for focus events. |
static int |
FOCUS_GAINED
This event indicates that the Component is now the focus owner. |
static int |
FOCUS_LAST
The last number in the range of ids used for focus events. |
static int |
FOCUS_LOST
This event indicates that the Component is no longer the focus owner. |
Fields inherited from class java.awt.event.ComponentEvent |
---|
COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN |
Fields inherited from class java.util.EventObject |
---|
source |
Constructor Summary | |
---|---|
FocusEvent(Component source,
int id)
Constructs a FocusEvent object and identifies it
as a permanent change in focus. |
|
FocusEvent(Component source,
int id,
boolean temporary)
Constructs a FocusEvent object and identifies
whether or not the change is temporary. |
|
FocusEvent(Component source,
int id,
boolean temporary,
Component opposite)
Constructs a FocusEvent object with the
specified temporary state and opposite Component . |
Method Summary | |
---|---|
Component |
getOppositeComponent()
Returns the other Component involved in this focus change. |
boolean |
isTemporary()
Identifies the focus change event as temporary or permanent. |
String |
paramString()
Returns a parameter string identifying this event. |
Methods inherited from class java.awt.event.ComponentEvent |
---|
getComponent |
Methods inherited from class java.awt.AWTEvent |
---|
consume, getID, isConsumed, setSource, toString |
Methods inherited from class java.util.EventObject |
---|
getSource |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
---|
public static final int FOCUS_FIRST
public static final int FOCUS_LAST
public static final int FOCUS_GAINED
public static final int FOCUS_LOST
Constructor Detail |
---|
public FocusEvent(Component source, int id, boolean temporary, Component opposite)
FocusEvent
object with the
specified temporary state and opposite Component
.
The opposite Component
is the other
Component
involved in this focus change.
For a FOCUS_GAINED
event, this is the
Component
that lost focus. For a
FOCUS_LOST
event, this is the Component
that gained focus. If this focus change occurs with a native
application, with a Java application in a different VM,
or with no other Component
, then the opposite
Component
is null
.
Note that passing in an invalid id
results in
unspecified behavior. This method throws an
IllegalArgumentException
if source
is null
.
source
- the Component
that originated the eventid
- FOCUS_GAINED
or FOCUS_LOST
temporary
- true
if the focus change is temporary;
false
otherwiseopposite
- the other Component involved in the focus change,
or null
IllegalArgumentException
- if source
is nullpublic FocusEvent(Component source, int id, boolean temporary)
FocusEvent
object and identifies
whether or not the change is temporary.
Note that passing in an invalid id
results in
unspecified behavior. This method throws an
IllegalArgumentException
if source
is null
.
source
- the Component
that originated the eventid
- an integer indicating the type of eventtemporary
- true
if the focus change is temporary;
false
otherwise
IllegalArgumentException
- if source
is nullpublic FocusEvent(Component source, int id)
FocusEvent
object and identifies it
as a permanent change in focus.
Note that passing in an invalid id
results in
unspecified behavior. This method throws an
IllegalArgumentException
if source
is null
.
source
- the Component
that originated the eventid
- an integer indicating the type of event
IllegalArgumentException
- if source
is nullMethod Detail |
---|
public boolean isTemporary()
true
if the focus change is temporary;
false
otherwisepublic Component getOppositeComponent()
public String paramString()
paramString
in class ComponentEvent