DropTargetContext (Java Platform SE 7 )

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

All Implemented Interfaces:

Serializable
```
public class DropTargetContext
extends Object
implements Serializable
```
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.

Since:

1.2

See Also:
Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`protected class`	`DropTargetContext.TransferableProxy` `TransferableProxy` is a helper inner class that implements `Transferable` interface and serves as a proxy for another `Transferable` object which represents data transfer for a particular drag-n-drop operation.

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`acceptDrag(int dragOperation)` accept the Drag.
`protected void`	`acceptDrop(int dropOperation)` called to signal that the drop is acceptable using the specified operation.
`void`	`addNotify(java.awt.dnd.peer.DropTargetContextPeer dtcp)` Called when associated with the `DropTargetContextPeer`.
`protected Transferable`	`createTransferableProxy(Transferable t, boolean local)` Creates a TransferableProxy to proxy for the specified Transferable.
`void`	`dropComplete(boolean success)` This method signals that the drop is completed and if it was successful or not.
`Component`	`getComponent()` 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`.
`DropTarget`	`getDropTarget()` This method returns the `DropTarget` associated with this `DropTargetContext`.
`protected int`	`getTargetActions()` This method returns an `int` representing the current actions this `DropTarget` will accept.
`protected Transferable`	`getTransferable()` get the Transferable (proxy) operand of this operation
`protected boolean`	`isDataFlavorSupported(DataFlavor df)` This method returns a `boolean` indicating if the given `DataFlavor` is supported by this `DropTargetContext`.
`protected void`	`rejectDrag()` reject the Drag.
`protected void`	`rejectDrop()` called to signal that the drop is unacceptable.
`void`	`removeNotify()` Called when disassociated with the `DropTargetContextPeer`.
`protected void`	`setTargetActions(int actions)` This method sets the current actions acceptable to this `DropTarget`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getDropTarget
```
public DropTarget getDropTarget()
```
    This method returns the DropTarget associated with this DropTargetContext.
    
    Returns:
    the DropTarget associated with this DropTargetContext
  - getComponent
```
public Component getComponent()
```
    This method returns the Component associated with this DropTargetContext.
    
    Returns:
    the Component associated with this Context
  - addNotify
```
public void addNotify(java.awt.dnd.peer.DropTargetContextPeer dtcp)
```
    Called when associated with the DropTargetContextPeer.
    
    Parameters:
    dtcp - the DropTargetContextPeer
  - removeNotify
```
public void removeNotify()
```
    Called when disassociated with the DropTargetContextPeer.
  - setTargetActions
```
protected void setTargetActions(int actions)
```
    This method sets the current actions acceptable to this DropTarget.
    
    Parameters:
    actions - an int representing the supported action(s)
  - getTargetActions
```
protected int getTargetActions()
```
    This method returns an int representing the current actions this DropTarget will accept.
    
    Returns:
    the current actions acceptable to this DropTarget
  - dropComplete
```
public void dropComplete(boolean success)
                  throws InvalidDnDOperationException
```
    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
  - acceptDrag
```
protected void acceptDrag(int dragOperation)
```
    accept the Drag.
    
    Parameters:
    dragOperation - the supported action(s)
  - rejectDrag
```
protected void rejectDrag()
```
    reject the Drag.
  - acceptDrop
```
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.
    
    Parameters:
    dropOperation - the supported action(s)
  - rejectDrop
```
protected void rejectDrop()
```
    called to signal that the drop is unacceptable. must be called during DropTargetListener.drop method invocation.
  - getCurrentDataFlavors
```
protected DataFlavor[] getCurrentDataFlavors()
```
    get the available DataFlavors of the Transferable operand of this operation.
    
    Returns:
    a DataFlavor[] containing the supported DataFlavors of the Transferable operand.
  - getCurrentDataFlavorsAsList
```
protected List<DataFlavor> getCurrentDataFlavorsAsList()
```
    This method returns a the currently available DataFlavors of the Transferable operand as a java.util.List.
    
    Returns:
    the currently available DataFlavors as a java.util.List
  - isDataFlavorSupported
```
protected boolean isDataFlavorSupported(DataFlavor df)
```
    This method returns a boolean indicating if the given DataFlavor is supported by this DropTargetContext.
    
    Parameters:
    df - the DataFlavor
    
    Returns:
    if the DataFlavor specified is supported
  - getTransferable
```
protected Transferable getTransferable()
                                throws InvalidDnDOperationException
```
    get the Transferable (proxy) operand of this operation
    
    Returns:
    the Transferable
    
    Throws:
    
    InvalidDnDOperationException - if a drag is not outstanding/extant
  - createTransferableProxy
```
protected Transferable createTransferableProxy(Transferable t,
                                   boolean local)
```
    Creates a TransferableProxy to proxy for the specified Transferable.
    
    Parameters:
    t - the Transferable to be proxied
    local - true if t represents the result of a local drag-n-drop operation.
    
    Returns:
    the new TransferableProxy instance.

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Class DropTargetContext

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

getDropTarget

getComponent

addNotify

removeNotify

setTargetActions

getTargetActions

dropComplete

acceptDrag

rejectDrag

acceptDrop

rejectDrop

getCurrentDataFlavors

getCurrentDataFlavorsAsList

isDataFlavorSupported

getTransferable

createTransferableProxy