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Class java.awt.dnd.DropTargetContext

java.lang.Object
    |
    +----java.awt.dnd.DropTargetContext

public class DropTargetContext

extends Object

A DropTargetContext is created whenever the logical cursor associated with a Drag and Drop operation coincides with the visibel geometry of a Component, with an associated DropTarget. The DropTargetContext provides the mechanism for a potential receiver of a Drop operation to both provide the end userr with the appropriate drag under feedback, but also to effect the subsequent data transfer if appropriate.

Since:

JDK1.2

DropTargetContext.TransferableProxy

dropTarget

dropTargetContextPeer

transferable

acceptDrag(int)

accept the Drag

acceptDrop(int)

called to signal that the drop is acceptable using the specified operation.

addNotify(DropTargetContextPeer)

called when associated with the DropTargetContextPeer

createTransferableProxy(Transferable, boolean)

subclasses may override this to supply their own Proxy

dropComplete(boolean)

signal that the drop is completed and if it was successful or not

getComponent()

getCurrentDataFlavors()

get the available DataFlavors of the Transferable operand of this operation

getDropTarget()

getTargetActions()

getTransferable()

get the Transferable (proxy) operand of this operation

rejectDrag()

reject the Drag

rejectDrop()

called to signal that the drop is unacceptable.

removeNotify()

called when disassociated with the DropTargetContextPeer

setTargetActions(int)

set the current actions acceptable to this DropTarget

protected DropTarget dropTarget

protected DropTargetContextPeer dropTargetContextPeer

protected Transferable transferable

public DropTarget getDropTarget()

Returns:

the DropTarget associated with this Context

public Component getComponent()

Returns:

the Component associated with this Context

public void addNotify(DropTargetContextPeer dtcp)

called when associated with the DropTargetContextPeer

public void removeNotify()

called when disassociated with the DropTargetContextPeer

protected void setTargetActions(int actions)

set the current actions acceptable to this DropTarget

protected int getTargetActions()

Returns:

the current actions acceptable to this DropTarget

public void dropComplete(boolean success) throws InvalidDnDOperationException

signal that the drop is completed and if it was successful or not

protected void acceptDrag(int dragOperation)

accept the Drag

protected void rejectDrag()

reject the Drag

protected void acceptDrop(int dropOperation)

called to signal that the drop is acceptable using the specified operation. must be called during DropTargetListener.drop method invocation.

protected void rejectDrop()

called to signal that the drop is unacceptable. must be called during DropTargetListener.drop method invocation.

protected DataFlavor[] getCurrentDataFlavors()

get the available DataFlavors of the Transferable operand of this operation

protected Transferable getTransferable() throws InvalidDnDOperationException

get the Transferable (proxy) operand of this operation

protected DropTargetContext.TransferableProxy createTransferableProxy(Transferable t,
                                                                      boolean local)

subclasses may override this to supply their own Proxy

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