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

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java.awt.dnd
Class DropTargetDropEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--java.awt.dnd.DropTargetEvent
              |
              +--java.awt.dnd.DropTargetDropEvent
public class DropTargetDropEvent
extends DropTargetEvent

The DropTargetDropEvent is delivered via the DropTargetListener drop() method.

Since:
JDK1.2
See Also:
Serialized Form

Fields inherited from class java.awt.dnd.DropTargetEvent
context
 
Fields inherited from class java.util.EventObject
source
 
Constructor Summary
DropTargetDropEvent(DropTargetContext dtc, Point cursorLocn, int dropAction, int srcActions)
          Construct a DropTargetDropEvent given the DropTargetContext for this operation, the location of the drag Cursor's hotspot in the Component's coordinates, the currently selected user drop action, and the current set of actions supported by the source.
DropTargetDropEvent(DropTargetContext dtc, Point cursorLocn, int dropAction, int srcActions, boolean isLocal)
          Construct a DropTargetEvent given the DropTargetContext for this operation, the location of the drag Cursor's hotspot in the Component's coordinates, the currently selected user drop action, the current set of actions supported by the source, and a boolean indicating if the source is in the same JVM as the target.
 
Method Summary
 void acceptDrop(int dropAction)
          accept the drop, using the specified action.
 void dropComplete(boolean success)
          This method notifies the DragSource that the drop transfer(s) are completed.
 DataFlavor[] getCurrentDataFlavors()
          This method returns the current DataFlavors.
 List getCurrentDataFlavorsAsList()
          This method returns the currently available DataFlavors as a java.util.List.
 int getDropAction()
          This method returns an int representing the action(s) supported by the source at the time of the drop.
 Point getLocation()
          This method returns a Point indicating the Cursor's current location in the Component's coordinates.
 int getSourceActions()
          This method returns an int representing the action(s) supported by the source.
 Transferable getTransferable()
          This method returns the Transferable object associated with the drop.
 boolean isDataFlavorSupported(DataFlavor df)
          This method returns a boolean indicating if the specified DataFlavor is available from the source.
 boolean isLocalTransfer()
          This method returns an int indicating if the source is in the same JVM as the target.
 void rejectDrop()
          reject the Drop.
 
Methods inherited from class java.awt.dnd.DropTargetEvent
getDropTargetContext
 
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

DropTargetDropEvent

public DropTargetDropEvent(DropTargetContext dtc,
                           Point cursorLocn,
                           int dropAction,
                           int srcActions)
Construct a DropTargetDropEvent given the DropTargetContext for this operation, the location of the drag Cursor's hotspot in the Component's coordinates, the currently selected user drop action, and the current set of actions supported by the source. By default, this constructor assumes that the target is not in the same virtual machine as the source; that is, isLocalTransfer() will return false.

Parameters:
dtc - The DropTargetContext for this operation
cursorLocn - The location of the "Drag" Cursor's hotspot in Component coordinates
dropAction - The currently selected user drop action: COPY, MOVE, or LINK constants found in DnDConstants.
srcActions - The current set of actions supported by the source: some combination of COPY, MOVE, or LINK as exposed by the DragSource.

Throws:
NullPointerException - if cursorLocn is null
IllegalArgumentException - if the dropAction or srcActions are illegal values, or if dtc is null.

DropTargetDropEvent

public DropTargetDropEvent(DropTargetContext dtc,
                           Point cursorLocn,
                           int dropAction,
                           int srcActions,
                           boolean isLocal)
Construct a DropTargetEvent given the DropTargetContext for this operation, the location of the drag Cursor's hotspot in the Component's coordinates, the currently selected user drop action, the current set of actions supported by the source, and a boolean indicating if the source is in the same JVM as the target.

Parameters:
dtc - The DropTargetContext for this operation
cursorLocn - The location of the "Drag" Cursor's hotspot in Component's coordinates
dropAction - The currently selected user drop action: COPY, MOVE, or LINK constants found in DnDConstants.
srcActions - The current set of actions supported by the source: some combination of COPY, MOVE, or LINK as exposed by the DragSource.
isLocalTx - True if the source is in the same JVM as the target
Method Detail

getLocation

public Point getLocation()
This method returns a Point indicating the Cursor's current location in the Component's coordinates.

Returns:
the current Cursor location in Component's coords.

getCurrentDataFlavors

public DataFlavor[] getCurrentDataFlavors()
This method returns the current DataFlavors.

Returns:
current DataFlavors

getCurrentDataFlavorsAsList

public List getCurrentDataFlavorsAsList()
This method returns the currently available DataFlavors as a java.util.List.

Returns:
the currently available DataFlavors as a java.util.List

isDataFlavorSupported

public boolean isDataFlavorSupported(DataFlavor df)
This method returns a boolean indicating if the specified DataFlavor is available from the source.

Parameters:
df - the DataFlavor to test

Returns:
if the DataFlavor specified is available from the source

getSourceActions

public int getSourceActions()
This method returns an int representing the action(s) supported by the source.

Returns:
source actions

getDropAction

public int getDropAction()
This method returns an int representing the action(s) supported by the source at the time of the drop.

Returns:
source actions

getTransferable

public Transferable getTransferable()
This method returns the Transferable object associated with the drop.

Returns:
the Transferable associated with the drop

acceptDrop

public void acceptDrop(int dropAction)
accept the drop, using the specified action.

Parameters:
dropAction - the specified action

rejectDrop

public void rejectDrop()
reject the Drop.

dropComplete

public void dropComplete(boolean success)
This method notifies the DragSource that the drop transfer(s) are completed.

Parameters:
success - a boolean indicating that the drop transfer(s) are completed.

isLocalTransfer

public boolean isLocalTransfer()
This method returns an int indicating if the source is in the same JVM as the target.

Returns:
if the Source is in the same JVM
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