Class DropTargetContext.TransferableProxy
- java.lang.Object
-
- java.awt.dnd.DropTargetContext.TransferableProxy
- All Implemented Interfaces:
Transferable
- Enclosing class:
- DropTargetContext
protected class DropTargetContext.TransferableProxy extends Object implements Transferable
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.
The proxy forwards all requests to the encapsulated transferable and automatically performs additional conversion on the data returned by the encapsulated transferable in case of local transfer.
Field Summary
Modifier and Type | Field | Description |
---|---|---|
protected boolean | isLocal | A |
protected Transferable | transferable | The encapsulated |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
Object | getTransferData(DataFlavor df) | Returns an object which represents the data provided by the encapsulated transferable for the requested data flavor. |
DataFlavor[] | getTransferDataFlavors() | Returns an array of DataFlavor objects indicating the flavors the data can be provided in by the encapsulated transferable. |
boolean | isDataFlavorSupported(DataFlavor flavor) | Returns whether or not the specified data flavor is supported by the encapsulated transferable. |
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Field Detail
transferable
protected Transferable transferable
The encapsulated Transferable
object.
isLocal
protected boolean isLocal
A boolean
indicating if the encapsulated Transferable
object represents the result of local drag-n-drop operation (within the same JVM).
Method Detail
getTransferDataFlavors
public DataFlavor[] getTransferDataFlavors()
Returns an array of DataFlavor objects indicating the flavors the data can be provided in by the encapsulated transferable.
- Specified by:
-
getTransferDataFlavors
in interfaceTransferable
- Returns:
- an array of data flavors in which the data can be provided by the encapsulated transferable
isDataFlavorSupported
public boolean isDataFlavorSupported(DataFlavor flavor)
Returns whether or not the specified data flavor is supported by the encapsulated transferable.
- Specified by:
-
isDataFlavorSupported
in interfaceTransferable
- Parameters:
-
flavor
- the requested flavor for the data - Returns:
-
true
if the data flavor is supported,false
otherwise
getTransferData
public Object getTransferData(DataFlavor df) throws UnsupportedFlavorException, IOException
Returns an object which represents the data provided by the encapsulated transferable for the requested data flavor.
In case of local transfer a serialized copy of the object returned by the encapsulated transferable is provided when the data is requested in application/x-java-serialized-object data flavor.
- Specified by:
-
getTransferData
in interfaceTransferable
- Parameters:
-
df
- the requested flavor for the data - Returns:
- an object which represents the data to be transferred
- Throws:
-
IOException
- if the data is no longer available in the requested flavor. -
UnsupportedFlavorException
- if the requested data flavor is not supported. - See Also:
DataFlavor.getRepresentationClass()