org.eclipse.ui.views.navigator
Class LocalSelectionTransfer

java.lang.Object
  |
  +--org.eclipse.swt.dnd.Transfer
        |
        +--org.eclipse.swt.dnd.ByteArrayTransfer
              |
              +--org.eclipse.ui.views.navigator.LocalSelectionTransfer

public class LocalSelectionTransfer

extends ByteArrayTransfer

A LocalSelectionTransfer may be used for drag and drop operations within the same instance of Eclipse. The selection is made available directly for use in the DropTargetListener. dropAccept method. The DropTargetEvent passed to dropAccept does not contain the drop data. The selection may be used for validation purposes so that the drop can be aborted if appropriate. This class is not intended to be subclassed.

Since:

2.1

Method Summary

static LocalSelectionTransfer	getInstance() Returns the singleton.
ISelection	getSelection() Returns the local transfer data.
protected int[]	getTypeIds() Returns the type id used to identify this transfer.
protected String[]	getTypeNames() Returns the type name used to identify this transfer.
void	javaToNative(Object object, TransferData transferData) Overrides org.eclipse.swt.dnd.ByteArrayTransfer#javaToNative(Object, TransferData).
Object	nativeToJava(TransferData transferData) Overrides org.eclipse.swt.dnd.ByteArrayTransfer#nativeToJava(TransferData).
void	setSelection(ISelection s) Sets the transfer data for local use.

Methods inherited from class org.eclipse.swt.dnd.ByteArrayTransfer

getSupportedTypes, isSupportedType

Methods inherited from class org.eclipse.swt.dnd.Transfer

registerType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static LocalSelectionTransfer getInstance()

Returns the singleton.

getSelection

public ISelection getSelection()

Returns the local transfer data.

Returns:

the local transfer data

getTypeIds

protected int[] getTypeIds()

Returns the type id used to identify this transfer.

Specified by:

getTypeIds in class Transfer

Returns:

the type id used to identify this transfer.

getTypeNames

protected String[] getTypeNames()

Returns the type name used to identify this transfer.

Specified by:

getTypeNames in class Transfer

Returns:

the type name used to identify this transfer.

javaToNative

public void javaToNative(Object object,
                         TransferData transferData)

Overrides org.eclipse.swt.dnd.ByteArrayTransfer#javaToNative(Object, TransferData). Only encode the transfer type name since the selection is read and written in the same process.

Overrides:

javaToNative in class ByteArrayTransfer

Parameters:

object - a java byte[] containing the data to be converted

transferData - an empty TransferData object; this object will be filled in on return with the platform specific format of the data

See Also:

ByteArrayTransfer.javaToNative(java.lang.Object, org.eclipse.swt.dnd.TransferData)

nativeToJava

public Object nativeToJava(TransferData transferData)

Overrides org.eclipse.swt.dnd.ByteArrayTransfer#nativeToJava(TransferData). Test if the native drop data matches this transfer type.

Overrides:

nativeToJava in class ByteArrayTransfer

Parameters:

transferData - the platform specific representation of the data to be been converted

Returns:

a java byte[] containing the converted data if the conversion was successful; otherwise null

See Also:

ByteArrayTransfer.nativeToJava(TransferData)

setSelection

public void setSelection(ISelection s)

Sets the transfer data for local use.

Parameters:

s - the transfer data