Class AdjustmentEvent
java.lang.Object
java.util.EventObject
java.awt.AWTEvent
java.awt.event.AdjustmentEvent
- All Implemented Interfaces:
Serializable
The adjustment event emitted by Adjustable objects like
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:
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UNIT_INCREMENT -
UNIT_DECREMENT -
BLOCK_INCREMENT -
BLOCK_DECREMENT -
TRACK
- Since:
- 1.1
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final intMarks the first integer id for the range of adjustment event ids.static final intMarks the last integer id for the range of adjustment event ids.static final intThe adjustment value changed event.static final intThe block decrement adjustment type.static final intThe block increment adjustment type.static final intThe absolute tracking adjustment type.static final intThe unit decrement adjustment type.static final intThe 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_MASKFields declared in class java.util.EventObject
source -
Constructor Summary
ConstructorsConstructorDescriptionAdjustmentEvent(Adjustable source, int id, int type, int value) Constructs anAdjustmentEventobject with the specifiedAdjustablesource, event type, adjustment type, and value.AdjustmentEvent(Adjustable source, int id, int type, int value, boolean isAdjusting) Constructs anAdjustmentEventobject with the specified Adjustable source, event type, adjustment type, and value. -
Method Summary
Modifier and TypeMethodDescriptionReturns theAdjustableobject where this event originated.intReturns the type of adjustment which caused the value changed event.intgetValue()Returns the current value in the adjustment event.booleanReturnstrueif this is one of multiple adjustment events.Methods declared in class java.awt.AWTEvent
consume, getID, isConsumed, paramString, setSource, toStringMethods declared in class java.util.EventObject
getSource
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Field Details
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ADJUSTMENT_FIRST
public static final int ADJUSTMENT_FIRSTMarks the first integer id for the range of adjustment event ids.- See Also:
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ADJUSTMENT_LAST
public static final int ADJUSTMENT_LASTMarks the last integer id for the range of adjustment event ids.- See Also:
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ADJUSTMENT_VALUE_CHANGED
public static final int ADJUSTMENT_VALUE_CHANGEDThe adjustment value changed event.- See Also:
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UNIT_INCREMENT
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UNIT_DECREMENT
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BLOCK_DECREMENT
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BLOCK_INCREMENT
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TRACK
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Constructor Details
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AdjustmentEvent
Constructs anAdjustmentEventobject with the specifiedAdjustablesource, event type, adjustment type, and value.This method throws an
IllegalArgumentExceptionifsourceisnull.- Parameters:
source- TheAdjustableobject where the event originatedid- An integer indicating the type of event. For information on allowable values, see the class description forAdjustmentEventtype- An integer indicating the adjustment type. For information on allowable values, see the class description forAdjustmentEventvalue- The current value of the adjustment- Throws:
IllegalArgumentException- ifsourceis null- See Also:
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AdjustmentEvent
Constructs anAdjustmentEventobject with the specified Adjustable source, event type, adjustment type, and value.This method throws an
IllegalArgumentExceptionifsourceisnull.- Parameters:
source- TheAdjustableobject where the event originatedid- An integer indicating the type of event. For information on allowable values, see the class description forAdjustmentEventtype- An integer indicating the adjustment type. For information on allowable values, see the class description forAdjustmentEventvalue- The current value of the adjustmentisAdjusting- A boolean that equalstrueif the event is one of a series of multiple adjusting events, otherwisefalse- Throws:
IllegalArgumentException- ifsourceis null- Since:
- 1.4
- See Also:
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Method Details
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getAdjustable
Returns theAdjustableobject where this event originated.- Returns:
- the
Adjustableobject 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()Returnstrueif this is one of multiple adjustment events.- Returns:
trueif this is one of multiple adjustment events, otherwise returnsfalse- Since:
- 1.4
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