Scrollbar
and ScrollPane
.
When the user changes the value of the scrolling component,
it receives an instance of AdjustmentEvent
.
An unspecified behavior will be caused if the id
parameter
of any particular AdjustmentEvent
instance is not
in the range from ADJUSTMENT_FIRST
to ADJUSTMENT_LAST
.
The type
of any AdjustmentEvent
instance takes one of the following
values:
UNIT_INCREMENT
UNIT_DECREMENT
BLOCK_INCREMENT
BLOCK_DECREMENT
TRACK
Adjustable
,
AdjustmentListener
,
Serialized FormModifier and Type | Field and Description |
---|---|
static int |
ADJUSTMENT_FIRST
Marks the first integer id for the range of adjustment event ids.
|
static int |
ADJUSTMENT_LAST
Marks the last integer id for the range of adjustment event ids.
|
static int |
ADJUSTMENT_VALUE_CHANGED
The adjustment value changed event.
|
static int |
BLOCK_DECREMENT
The block decrement adjustment type.
|
static int |
BLOCK_INCREMENT
The block increment adjustment type.
|
static int |
TRACK
The absolute tracking adjustment type.
|
static int |
UNIT_DECREMENT
The unit decrement adjustment type.
|
static int |
UNIT_INCREMENT
The unit increment adjustment type.
|
ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASK
Constructor and Description |
---|
AdjustmentEvent(Adjustable source,
int id,
int type,
int value)
Constructs an
AdjustmentEvent object with the
specified Adjustable source, event type,
adjustment type, and value. |
AdjustmentEvent(Adjustable source,
int id,
int type,
int value,
boolean isAdjusting)
Constructs an
AdjustmentEvent object with the
specified Adjustable source, event type, adjustment type, and value. |
Modifier and Type | Method and Description |
---|---|
Adjustable |
getAdjustable()
Returns the
Adjustable object where this event originated. |
int |
getAdjustmentType()
Returns the type of adjustment which caused the value changed
event.
|
int |
getValue()
Returns the current value in the adjustment event.
|
boolean |
getValueIsAdjusting()
Returns
true if this is one of multiple
adjustment events. |
java.lang.String |
paramString()
Returns a string representing the state of this
Event . |
AdjustmentEvent
object with the
specified Adjustable
source, event type,
adjustment type, and value.
This method throws an
IllegalArgumentException
if source
is null
.
source
- The Adjustable
object where the
event originatedid
- An integer indicating the type of event.
For information on allowable values, see
the class description for AdjustmentEvent
type
- An integer indicating the adjustment type.
For information on allowable values, see
the class description for AdjustmentEvent
value
- The current value of the adjustmentjava.lang.IllegalArgumentException
- if source
is nullEventObject.getSource()
,
AWTEvent.getID()
,
getAdjustmentType()
,
getValue()
AdjustmentEvent
object with the
specified Adjustable source, event type, adjustment type, and value.
This method throws an
IllegalArgumentException
if source
is null
.
source
- The Adjustable
object where the
event originatedid
- An integer indicating the type of event.
For information on allowable values, see
the class description for AdjustmentEvent
type
- An integer indicating the adjustment type.
For information on allowable values, see
the class description for AdjustmentEvent
value
- The current value of the adjustmentisAdjusting
- A boolean that equals true
if the event is one
of a series of multiple adjusting events,
otherwise false
java.lang.IllegalArgumentException
- if source
is nullEventObject.getSource()
,
AWTEvent.getID()
,
getAdjustmentType()
,
getValue()
,
getValueIsAdjusting()
Adjustable
object where this event originated.Adjustable
object where this event originatedtrue
if this is one of multiple
adjustment events.true
if this is one of multiple
adjustment events, otherwise returns false
AWTEvent
Event
.
This method is intended to be used only for debugging purposes, and the
content and format of the returned string may vary between
implementations. The returned string may be empty but may not be
null
.paramString
in class AWTEvent