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java.lang.Objectorg.eclipse.swt.dnd.Transfer
org.eclipse.swt.dnd.ByteArrayTransfer
org.eclipse.emf.edit.ui.dnd.LocalTransfer
This derived implementation of a byte array transfer short circuits the transfer process
so that a local transfer does not serialize the object
and hence can and will return the original object, not just a clone.
You only really need ever know about LocalTransfer.getInstance()
,
so that you can include it in when adding drag support to a viewer.
See EditingDomainViewerDropAdapter
and ViewerDragAdapter
for more details.
As an addded guard, the time is recorded and serialized in javaToNative to that navive to java can ensure that it's returns the value that was really to have been transferred.
Field Summary | |
protected static LocalTransfer |
instance
This is initialized and returned by getInstance() . |
protected Object |
object
This records the data being transferred. |
protected long |
startTime
This records the time at which the transfer data was recorded. |
protected static int |
TYPE_ID
This is the ID that is registered to the name. |
protected static String |
TYPE_NAME
This is the register transfer type name. |
Constructor Summary | |
protected |
LocalTransfer()
This creates an instance; typically you get one from getInstance() . |
Method Summary | |
static LocalTransfer |
getInstance()
This returns the one instance of this transfer agent. |
protected int[] |
getTypeIds()
This returns the transfer ids that this agent supports. |
String[] |
getTypeNames()
This returns the transfer names that this agent supports. |
void |
javaToNative(Object object,
TransferData transferData)
This records the object and current time and encodes only the current time into the transfer data. |
Object |
nativeToJava(TransferData transferData)
This decodes the time of the transfer and returns the recorded the object if the recorded time and the decoded time match. |
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 |
Field Detail |
protected static final String TYPE_NAME
protected static final int TYPE_ID
protected static LocalTransfer instance
getInstance()
.
protected long startTime
protected Object object
Constructor Detail |
protected LocalTransfer()
getInstance()
.
Method Detail |
public static LocalTransfer getInstance()
protected int[] getTypeIds()
public String[] getTypeNames()
public void javaToNative(Object object, TransferData transferData)
public Object nativeToJava(TransferData transferData)
|
Copyright 2001-2006 IBM Corporation and others. All Rights Reserved. |
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