当前页面: 在线文档首页 > JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class DragGestureEvent - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

Overview  Package   Class  Use  Tree  Deprecated  Index  Help		JavaTM 2 Platform Standard Edition
PREV CLASS   NEXT CLASS	FRAMES    NO FRAMES
SUMMARY:  INNER | FIELD | CONSTR | METHOD	DETAIL:  FIELD | CONSTR | METHOD

---

java.awt.dnd
Class DragGestureEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--java.awt.dnd.DragGestureEvent

---

public class DragGestureEvent

extends EventObject

A DragGestureEvent is passed to DragGestureListener's dragGestureRecognized() method when a particular DragGestureRecognizer detects that a platform dependent drag initiating gesture has occurred on the Component that it is tracking.

See Also:

DragGestureRecognizer, DragGestureListener, DragSource, Serialized Form

---

Fields inherited from class java.util.EventObject

source

 

Constructor Summary

DragGestureEvent(DragGestureRecognizer dgr, int act, Point ori, List evs)           Construct a DragGestureEvent given the DragGestureRecognizer firing this event, an int representing the user's preferred action, a Point indicating the origin of the drag, and a List of events that comprise the gesture.

 

Method Summary
Component	getComponent()           This method returns the Component associated with this DragGestureEvent.
int	getDragAction()           This method returns an int representing the action selected by the user.
Point	getDragOrigin()           This method returns a Point in the coordinates of the Component over which the drag originated.
DragSource	getDragSource()           This method returns the DragSource.
DragGestureRecognizer	getSourceAsDragGestureRecognizer()           This method returns the source as a DragGestureRecognizer.
InputEvent	getTriggerEvent()           This method returns the initial event that triggered the gesture.
Iterator	iterator()           This method returns an Iterator for the events comprising the gesture.
void	startDrag(Cursor dragCursor, Image dragImage, Point imageOffset, Transferable transferable, DragSourceListener dsl)           Start the drag given the initial Cursor to display, a drag Image, the offset of the Image, the Transferable object, and the DragSourceListener to use.
void	startDrag(Cursor dragCursor, Transferable transferable, DragSourceListener dsl)           Start the drag given the initial Cursor to display, the Transferable object, and the DragSourceListener to use.
Object[]	toArray()           This method returns an Object array of the events comprising the drag gesture.
Object[]	toArray(Object[] array)           This method returns an array of the events comprising the drag gesture.

 

Methods inherited from class java.util.EventObject

getSource, toString

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Constructor Detail

DragGestureEvent

public DragGestureEvent(DragGestureRecognizer dgr,
                        int act,
                        Point ori,
                        List evs)

Construct a DragGestureEvent given the DragGestureRecognizer firing this event, an int representing the user's preferred action, a Point indicating the origin of the drag, and a List of events that comprise the gesture.

Parameters:

dgr - The DragGestureRecognizer firing this event

act - The the user's preferred action

ori - The origin of the drag

evs - The List of events that comprise the gesture

Throws:

IllegalArgumentException - if input parameters are null

Method Detail

getSourceAsDragGestureRecognizer

public DragGestureRecognizer getSourceAsDragGestureRecognizer()

This method returns the source as a DragGestureRecognizer.

Returns:

the source as a DragGestureRecognizer

---

getComponent

public Component getComponent()

This method returns the Component associated with this DragGestureEvent.

Returns:

the Component

---

getDragSource

public DragSource getDragSource()

This method returns the DragSource.

Returns:

the DragSource

---

getDragOrigin

public Point getDragOrigin()

This method returns a Point in the coordinates of the Component over which the drag originated.

Returns:

the Point where the drag originated in Component coords.

---

iterator

public Iterator iterator()

This method returns an Iterator for the events comprising the gesture.

Returns:

an Iterator for the events comprising the gesture

---

toArray

public Object[] toArray()

This method returns an Object array of the events comprising the drag gesture.

Returns:

an array of the events comprising the gesture

---

toArray

public Object[] toArray(Object[] array)

This method returns an array of the events comprising the drag gesture.

Parameters:

array - the array of EventObject sub(types)

Returns:

an array of the events comprising the gesture

---

getDragAction

public int getDragAction()

This method returns an int representing the action selected by the user.

Returns:

the action selected by the user

---

getTriggerEvent

public InputEvent getTriggerEvent()

This method returns the initial event that triggered the gesture.

---

startDrag

public void startDrag(Cursor dragCursor,
                      Transferable transferable,
                      DragSourceListener dsl)
               throws InvalidDnDOperationException

Start the drag given the initial Cursor to display, the Transferable object, and the DragSourceListener to use.

Parameters:

dragCursor - The initial drag Cursor

transferable - The source's Transferable

dsl - The source's DragSourceListener

Throws:

InvalidDnDOperationException - if the Drag and Drop system is unable to initiate a drag operation, or if the user attempts to start a drag while an existing drag operation is still executing.

---

startDrag

public void startDrag(Cursor dragCursor,
                      Image dragImage,
                      Point imageOffset,
                      Transferable transferable,
                      DragSourceListener dsl)
               throws InvalidDnDOperationException

Start the drag given the initial Cursor to display, a drag Image, the offset of the Image, the Transferable object, and the DragSourceListener to use.

Parameters:

dragCursor - The initial drag Cursor

dragImage - The source's dragImage

imageOffset - The dragImage's offset

transferable - The source's Transferable

dsl - The source's DragSourceListener

Throws:

InvalidDnDOperationException - if the Drag and Drop system is unable to initiate a drag operation, or if the user attempts to start a drag while an existing drag operation is still executing.

---

Overview  Package   Class  Use  Tree  Deprecated  Index  Help		JavaTM 2 Platform Standard Edition
PREV CLASS   NEXT CLASS	FRAMES    NO FRAMES
SUMMARY:  INNER | FIELD | CONSTR | METHOD	DETAIL:  FIELD | CONSTR | METHOD

---

Submit a bug or feature
Java, Java 2D, and JDBC are a trademarks or registered trademarks of Sun Microsystems, Inc. in the US and other countries.
Copyright 1993-1999 Sun Microsystems, Inc. 901 San Antonio Road,
Palo Alto, California, 94303, U.S.A. All Rights Reserved.