- java.lang.Object
-
- java.util.EventObject
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- java.awt.AWTEvent
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- java.awt.event.AdjustmentEvent
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- All Implemented Interfaces:
Serializable
public class AdjustmentEvent extends AWTEvent
The adjustment event emitted by Adjustable objects likeScrollbar
andScrollPane
. When the user changes the value of the scrolling component, it receives an instance ofAdjustmentEvent
.An unspecified behavior will be caused if the
id
parameter of any particularAdjustmentEvent
instance is not in the range fromADJUSTMENT_FIRST
toADJUSTMENT_LAST
.The
type
of anyAdjustmentEvent
instance takes one of the following values:-
UNIT_INCREMENT
-
UNIT_DECREMENT
-
BLOCK_INCREMENT
-
BLOCK_DECREMENT
-
TRACK
- Since:
- 1.1
- See Also:
Adjustable
,AdjustmentListener
, Serialized Form
-
-
Field Summary
Fields Modifier and Type Field 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.-
Fields declared in class java.awt.AWTEvent
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
-
Fields declared in class java.util.EventObject
source
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-
Constructor Summary
Constructors Constructor Description AdjustmentEvent(Adjustable source, int id, int type, int value)
Constructs anAdjustmentEvent
object with the specifiedAdjustable
source, event type, adjustment type, and value.AdjustmentEvent(Adjustable source, int id, int type, int value, boolean isAdjusting)
Constructs anAdjustmentEvent
object with the specified Adjustable source, event type, adjustment type, and value.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Adjustable
getAdjustable()
Returns theAdjustable
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()
Returnstrue
if this is one of multiple adjustment events.-
Methods declared in class java.awt.AWTEvent
consume, getID, isConsumed, paramString, setSource, toString
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Methods declared in class java.util.EventObject
getSource
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-
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Field Detail
-
ADJUSTMENT_FIRST
public static final int ADJUSTMENT_FIRST
Marks the first integer id for the range of adjustment event ids.- See Also:
- Constant Field Values
-
ADJUSTMENT_LAST
public static final int ADJUSTMENT_LAST
Marks the last integer id for the range of adjustment event ids.- See Also:
- Constant Field Values
-
ADJUSTMENT_VALUE_CHANGED
public static final int ADJUSTMENT_VALUE_CHANGED
The adjustment value changed event.- See Also:
- Constant Field Values
-
UNIT_INCREMENT
@Native public static final int UNIT_INCREMENT
The unit increment adjustment type.- See Also:
- Constant Field Values
-
UNIT_DECREMENT
@Native public static final int UNIT_DECREMENT
The unit decrement adjustment type.- See Also:
- Constant Field Values
-
BLOCK_DECREMENT
@Native public static final int BLOCK_DECREMENT
The block decrement adjustment type.- See Also:
- Constant Field Values
-
BLOCK_INCREMENT
@Native public static final int BLOCK_INCREMENT
The block increment adjustment type.- See Also:
- Constant Field Values
-
TRACK
@Native public static final int TRACK
The absolute tracking adjustment type.- See Also:
- Constant Field Values
-
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Constructor Detail
-
AdjustmentEvent
public AdjustmentEvent(Adjustable source, int id, int type, int value)
Constructs anAdjustmentEvent
object with the specifiedAdjustable
source, event type, adjustment type, and value.This method throws an
IllegalArgumentException
ifsource
isnull
.- Parameters:
source
- TheAdjustable
object where the event originatedid
- An integer indicating the type of event. For information on allowable values, see the class description forAdjustmentEvent
type
- An integer indicating the adjustment type. For information on allowable values, see the class description forAdjustmentEvent
value
- The current value of the adjustment- Throws:
IllegalArgumentException
- ifsource
is null- See Also:
EventObject.getSource()
,AWTEvent.getID()
,getAdjustmentType()
,getValue()
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AdjustmentEvent
public AdjustmentEvent(Adjustable source, int id, int type, int value, boolean isAdjusting)
Constructs anAdjustmentEvent
object with the specified Adjustable source, event type, adjustment type, and value.This method throws an
IllegalArgumentException
ifsource
isnull
.- Parameters:
source
- TheAdjustable
object where the event originatedid
- An integer indicating the type of event. For information on allowable values, see the class description forAdjustmentEvent
type
- An integer indicating the adjustment type. For information on allowable values, see the class description forAdjustmentEvent
value
- The current value of the adjustmentisAdjusting
- A boolean that equalstrue
if the event is one of a series of multiple adjusting events, otherwisefalse
- Throws:
IllegalArgumentException
- ifsource
is null- Since:
- 1.4
- See Also:
EventObject.getSource()
,AWTEvent.getID()
,getAdjustmentType()
,getValue()
,getValueIsAdjusting()
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-
Method Detail
-
getAdjustable
public Adjustable getAdjustable()
Returns theAdjustable
object where this event originated.- Returns:
- the
Adjustable
object where this event originated
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getValue
public int getValue()
Returns the current value in the adjustment event.- Returns:
- the current value in the adjustment event
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getAdjustmentType
public int getAdjustmentType()
Returns the type of adjustment which caused the value changed event. It will have one of the following values:- Returns:
- one of the adjustment values listed above
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getValueIsAdjusting
public boolean getValueIsAdjusting()
Returnstrue
if this is one of multiple adjustment events.- Returns:
true
if this is one of multiple adjustment events, otherwise returnsfalse
- Since:
- 1.4
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-