Class java.awt.event.ItemEvent - JDK 5 Documentation v1.1.8, Java 2 SDK 英文文档

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Class java.awt.event.ItemEvent

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

public class ItemEvent
extends AWTEvent

The item event emitted by ItemSelectable objects. This event is generated when an item is selected or de-selected.

See Also:: ItemSelectable, ItemListener

DESELECTED: The item de-selected state change type.
ITEM_FIRST: Marks the first integer id for the range of item event ids.
ITEM_LAST: Marks the last integer id for the range of item event ids.
ITEM_STATE_CHANGED: The item state changed event type.
SELECTED: The item selected state change type.

ItemEvent(ItemSelectable, int, Object, int): Constructs a ItemSelectEvent object with the specified ItemSelectable source, type, item, and item select state.

getItem(): Returns the item where the event occurred.
getItemSelectable(): Returns the ItemSelectable object where this event originated.
getStateChange(): Returns the state change type which generated the event.
paramString()

ITEM_FIRST

 public static final int ITEM_FIRST

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

ITEM_LAST

 public static final int ITEM_LAST

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

ITEM_STATE_CHANGED

 public static final int ITEM_STATE_CHANGED

The item state changed event type.

SELECTED

 public static final int SELECTED

The item selected state change type.

DESELECTED

 public static final int DESELECTED

The item de-selected state change type.

ItemEvent

 public ItemEvent(ItemSelectable source,
                  int id,
                  Object item,
                  int stateChange)

Constructs a ItemSelectEvent object with the specified ItemSelectable source, type, item, and item select state.

Parameters:: source - the ItemSelectable object where the event originated

getItemSelectable

 public ItemSelectable getItemSelectable()

Returns the ItemSelectable object where this event originated.

getItem

 public Object getItem()

Returns the item where the event occurred.

getStateChange

 public int getStateChange()

Returns the state change type which generated the event.

See Also:: SELECTED, DESELECTED

paramString

 public String paramString()

Overrides:: paramString in class AWTEvent

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