public class GenericDNDHandler extends Object implements DropTargetListener
Constructor and Description |
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GenericDNDHandler(DataFlavor[] acceptedFlavors) |
Modifier and Type | Method and Description |
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void |
cleanup() |
void |
dragEnter(DropTargetDragEvent dtde)
Called while a drag operation is ongoing, when the mouse pointer enters the operable part of the drop site for the
DropTarget registered with this listener. |
void |
dragExit(DropTargetEvent dte)
Called while a drag operation is ongoing, when the mouse pointer has exited the operable part of the drop site for
the
DropTarget registered with this listener. |
void |
dragOver(DropTargetDragEvent dtde)
Called when a drag operation is ongoing, while the mouse pointer is still over the operable part of the drop site
for the
DropTarget registered with this listener. |
void |
drop(DropTargetDropEvent dtde)
Called when the drag operation has terminated with a drop on the operable part of the drop site for the
DropTarget registered with this listener. |
void |
dropActionChanged(DropTargetDragEvent dtde)
Called if the user has modified the current drop gesture.
|
DataFlavor |
getFlavor() |
Point |
getPosition() |
Object |
getTransferData() |
protected int |
updateDragOver(DropTargetDragEvent event) |
public GenericDNDHandler(DataFlavor[] acceptedFlavors)
public void dragEnter(DropTargetDragEvent dtde)
DropTarget
registered with this listener.dragEnter
in interface DropTargetListener
dtde
- the DropTargetDragEvent
public void dragOver(DropTargetDragEvent dtde)
DropTarget
registered with this listener.dragOver
in interface DropTargetListener
dtde
- the DropTargetDragEvent
public Point getPosition()
public Object getTransferData()
public DataFlavor getFlavor()
protected int updateDragOver(DropTargetDragEvent event)
public void dropActionChanged(DropTargetDragEvent dtde)
dropActionChanged
in interface DropTargetListener
dtde
- the DropTargetDragEvent
public void dragExit(DropTargetEvent dte)
DropTarget
registered with this listener.dragExit
in interface DropTargetListener
dte
- the DropTargetEvent
public void drop(DropTargetDropEvent dtde)
DropTarget
registered with this listener.
This method is responsible for undertaking the transfer of the data associated with the gesture. The
DropTargetDropEvent
provides a means to obtain a Transferable
object that represents the
data object(s) to be transfered. From this method, the DropTargetListener
shall accept or reject
the drop via the acceptDrop(int dropAction) or rejectDrop() methods of the DropTargetDropEvent
parameter.
DropTargetDropEvent
's getTransferable() method may be
invoked, and data transfer may be performed via the returned Transferable
's getTransferData() method.
At the completion of a drop, an implementation of this method is required to signal the success/failure of the drop
by passing an appropriate boolean
to the DropTargetDropEvent
's dropComplete(boolean
success) method.
Note: The data transfer should be completed before the call to the DropTargetDropEvent
's
dropComplete(boolean success) method. After that, a call to the getTransferData() method of the
Transferable
returned by DropTargetDropEvent.getTransferable()
is guaranteed to succeed
only if the data transfer is local; that is, only if DropTargetDropEvent.isLocalTransfer()
returns
true
. Otherwise, the behavior of the call is implementation-dependent.
drop
in interface DropTargetListener
dtde
- the DropTargetDropEvent
public void cleanup()
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