Module java.desktop
Package java.awt.dnd

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 Details Link icon

    • transferable Link icon

      protected Transferable transferable
      The encapsulated Transferable object.

    • isLocal Link icon

      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 Details Link icon

    • getTransferDataFlavors Link icon

      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 Link icon

      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 Link icon

      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
      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: