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Eclipse Platform
Release 3.5

org.eclipse.ui.part
Class ResourceTransfer

java.lang.Object
  extended by 

org.eclipse.swt.dnd.Transfer
      extended by 

org.eclipse.swt.dnd.ByteArrayTransfer
          extended by 
org.eclipse.ui.part.ResourceTransfer

public class ResourceTransfer
extends ByteArrayTransfer

The ResourceTransfer class is used to transfer an array of IResourcess from one part to another in a drag and drop operation or a cut, copy, paste action.

In every drag and drop operation there is a DragSource and a DropTarget. When a drag occurs a Transfer is used to marshall the drag data from the source into a byte array. If a drop occurs another Transfer is used to marshall the byte array into drop data for the target.

When a CutAction or a CopyAction is performed, this transfer is used to place references to the selected resources on the Clipboard. When a PasteAction is performed, the references on the clipboard are used to move or copy the resources to the selected destination.

This class can be used for a Viewer or an SWT component directly. A singleton is provided which may be serially reused (see getInstance). It is not intended to be subclassed.

See Also:
StructuredViewer, DropTarget, DragSource
Restriction:
This class is not intended to be subclassed by clients.

Method Summary
static  ResourceTransfer getInstance ()
          Returns the singleton instance.
protected  int[] getTypeIds ()
          Returns the platform specific ids of the data types that can be converted using this transfer agent.
protected   String[] getTypeNames ()
          Returns the platform specific names of the data types that can be converted using this transfer agent.
protected  void javaToNative ( Object data, TransferData transferData)
          This implementation of javaToNative converts a java byte[] to a platform specific representation.
protected   Object nativeToJava ( TransferData transferData)
          This implementation of nativeToJava converts a platform specific representation of a byte array to a java byte[].
 
Methods inherited from class org.eclipse.swt.dnd. ByteArrayTransfer
getSupportedTypes, isSupportedType
 
Methods inherited from class org.eclipse.swt.dnd. Transfer
registerType, validate
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

getInstance

public static 
ResourceTransfer getInstance()
Returns the singleton instance.

Returns:
the singleton instance

getTypeIds

protected int[] getTypeIds()
Description copied from class: Transfer
Returns the platform specific ids of the data types that can be converted using this transfer agent.

Specified by:
getTypeIds in class Transfer
Returns:
the platform specific ids of the data types that can be converted using this transfer agent

getTypeNames

protected 
String[] getTypeNames()
Description copied from class: Transfer
Returns the platform specific names of the data types that can be converted using this transfer agent.

Specified by:
getTypeNames in class Transfer
Returns:
the platform specific names of the data types that can be converted using this transfer agent.

javaToNative

protected void javaToNative(
Object data,
                            
TransferData transferData)
Description copied from class: ByteArrayTransfer
This implementation of javaToNative converts a java byte[] to a platform specific representation.

Overrides:
javaToNative in class ByteArrayTransfer
Parameters:
data - a java byte[] containing the data to be converted
transferData - an empty TransferData object that will be filled in on return with the platform specific format of the data
See Also:
Transfer.nativeToJava(org.eclipse.swt.dnd.TransferData)

nativeToJava

protected 
Object nativeToJava(
TransferData transferData)
Description copied from class: ByteArrayTransfer
This implementation of nativeToJava converts a platform specific representation of a byte array to a java byte[].

Overrides:
nativeToJava in class ByteArrayTransfer
Parameters:
transferData - the platform specific representation of the data to be converted
Returns:
a java byte[] containing the converted data if the conversion was successful; otherwise null
See Also:
Transfer.javaToNative(java.lang.Object, org.eclipse.swt.dnd.TransferData)

Eclipse Platform
Release 3.5

Guidelines for using Eclipse APIs.

Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire