Transferable
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.
Modifier and Type | Field | Description |
---|---|---|
protected boolean |
isLocal |
A boolean indicating if the encapsulated Transferable object represents the result of local drag-n-drop operation (within the same JVM). |
protected Transferable |
transferable |
The encapsulated Transferable object. |
Modifier and Type | Method | Description |
---|---|---|
Object |
getTransferData |
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 |
Returns whether or not the specified data flavor is supported by the encapsulated transferable. |
protected Transferable transferable
Transferable
object.protected boolean isLocal
boolean
indicating if the encapsulated Transferable
object represents the result of local drag-n-drop operation (within the same JVM).public DataFlavor[] getTransferDataFlavors()
getTransferDataFlavors
in interface Transferable
public boolean isDataFlavorSupported(DataFlavor flavor)
isDataFlavorSupported
in interface Transferable
flavor
- the requested flavor for the datatrue
if the data flavor is supported, false
otherwisepublic Object getTransferData(DataFlavor df) throws UnsupportedFlavorException, IOException
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.
getTransferData
in interface Transferable
df
- the requested flavor for the dataIOException
- if the data is no longer available in the requested flavor.UnsupportedFlavorException
- if the requested data flavor is not supported.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/awt/dnd/DropTargetContext.TransferableProxy.html