java.awt.dnd
Class DropTargetContext.TransferableProxyjava.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
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.
Method Summary
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 inherited from 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 interface Transferable
- 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 interface Transferable
- 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 interface Transferable
- Parameters:
- df - the requested flavor for the data
- 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()