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.

Since:
1.2

  • Field Summary

    Fields
    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.

  • 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 Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Field Details

    • 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 Details

    • 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
      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: