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Java Source Code / Java Documentation » 6.0 JDK Core » AWT » java.awt.dnd 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   java.awt.dnd.DropTargetContext

DropTargetContext
public class DropTargetContext implements Serializable(Code)
A DropTargetContext is created whenever the logical cursor associated with a Drag and Drop operation coincides with the visible geometry of a Component associated with a DropTarget. The DropTargetContext provides the mechanism for a potential receiver of a drop operation to both provide the end user with the appropriate drag under feedback, but also to effect the subsequent data transfer if appropriate.
version:
   1.44, 05/05/07
since:
   1.2

Inner Class :protected class TransferableProxy implements Transferable


Constructor Summary
 DropTargetContext(DropTarget dt)
     Construct a DropTargetContext given a specified DropTarget.

Method Summary
protected  voidacceptDrag(int dragOperation)
     accept the Drag.
protected  voidacceptDrop(int dropOperation)
     called to signal that the drop is acceptable using the specified operation.
public  voidaddNotify(DropTargetContextPeer dtcp)
     Called when associated with the DropTargetContextPeer.
protected  TransferablecreateTransferableProxy(Transferable t, boolean local)
     Creates a TransferableProxy to proxy for the specified Transferable.
Parameters:
  t - the Transferable to be proxied
Parameters:
  local - true if t representsthe result of a local drag-n-drop operation.
public  voiddropComplete(boolean success)
     This method signals that the drop is completed and if it was successful or not.
public  ComponentgetComponent()
     This method returns the Component associated with this DropTargetContext.
protected  DataFlavor[]getCurrentDataFlavors()
     get the available DataFlavors of the Transferable operand of this operation.
protected  List<DataFlavor>getCurrentDataFlavorsAsList()
     This method returns a the currently available DataFlavors of the Transferable operand as a java.util.List.
public  DropTargetgetDropTarget()
     This method returns the DropTarget associated with this DropTargetContext.
 DropTargetContextPeergetDropTargetContextPeer()
    
protected  intgetTargetActions()
     This method returns an int representing the current actions this DropTarget will accept.
protected  TransferablegetTransferable()
    
protected  booleanisDataFlavorSupported(DataFlavor df)
     This method returns a boolean indicating if the given DataFlavor is supported by this DropTargetContext.
protected  voidrejectDrag()
     reject the Drag.
protected  voidrejectDrop()
     called to signal that the drop is unacceptable.
public  voidremoveNotify()
     Called when disassociated with the DropTargetContextPeer.
protected  voidsetTargetActions(int actions)
     This method sets the current actions acceptable to this DropTarget.


Constructor Detail
DropTargetContext
DropTargetContext(DropTarget dt)(Code)
Construct a DropTargetContext given a specified DropTarget.


Parameters:
  dt - the DropTarget to associate with




Method Detail
acceptDrag
protected void acceptDrag(int dragOperation)(Code)
accept the Drag.


Parameters:
  dragOperation - the supported action(s)



acceptDrop
protected void acceptDrop(int dropOperation)(Code)
called to signal that the drop is acceptable using the specified operation. must be called during DropTargetListener.drop method invocation.


Parameters:
  dropOperation - the supported action(s)



addNotify
public void addNotify(DropTargetContextPeer dtcp)(Code)
Called when associated with the DropTargetContextPeer.


Parameters:
  dtcp - the DropTargetContextPeer



createTransferableProxy
protected Transferable createTransferableProxy(Transferable t, boolean local)(Code)
Creates a TransferableProxy to proxy for the specified Transferable.
Parameters:
  t - the Transferable to be proxied
Parameters:
  local - true if t representsthe result of a local drag-n-drop operation. the new TransferableProxy instance.


dropComplete
public void dropComplete(boolean success) throws InvalidDnDOperationException(Code)
This method signals that the drop is completed and if it was successful or not.


Parameters:
  success - true for success, false if not


throws:
  InvalidDnDOperationException - if a drop is not outstanding/extant



getComponent
public Component getComponent()(Code)
This method returns the Component associated with this DropTargetContext.

the Component associated with this Context



getCurrentDataFlavors
protected DataFlavor[] getCurrentDataFlavors()(Code)
get the available DataFlavors of the Transferable operand of this operation.

a DataFlavor[] containing thesupported DataFlavors of the Transferable operand.



getCurrentDataFlavorsAsList
protected List<DataFlavor> getCurrentDataFlavorsAsList()(Code)
This method returns a the currently available DataFlavors of the Transferable operand as a java.util.List.

the currently available DataFlavors as a java.util.List



getDropTarget
public DropTarget getDropTarget()(Code)
This method returns the DropTarget associated with this DropTargetContext.

the DropTarget associated with this DropTargetContext



getDropTargetContextPeer
DropTargetContextPeer getDropTargetContextPeer()(Code)
Get the DropTargetContextPeer

the platform peer



getTargetActions
protected int getTargetActions()(Code)
This method returns an int representing the current actions this DropTarget will accept.

the current actions acceptable to this DropTarget



getTransferable
protected Transferable getTransferable() throws InvalidDnDOperationException(Code)
get the Transferable (proxy) operand of this operation


throws:
  InvalidDnDOperationException - if a drag is not outstanding/extant

the Transferable



isDataFlavorSupported
protected boolean isDataFlavorSupported(DataFlavor df)(Code)
This method returns a boolean indicating if the given DataFlavor is supported by this DropTargetContext.


Parameters:
  df - the DataFlavor

if the DataFlavor specified is supported



rejectDrag
protected void rejectDrag()(Code)
reject the Drag.


rejectDrop
protected void rejectDrop()(Code)
called to signal that the drop is unacceptable. must be called during DropTargetListener.drop method invocation.


removeNotify
public void removeNotify()(Code)
Called when disassociated with the DropTargetContextPeer.


setTargetActions
protected void setTargetActions(int actions)(Code)
This method sets the current actions acceptable to this DropTarget.


Parameters:
  actions - an int representing the supported action(s)



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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