Package org.eclipse.jface.util
Class LocalSelectionTransfer
- java.lang.Object
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- org.eclipse.swt.dnd.Transfer
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- org.eclipse.swt.dnd.ByteArrayTransfer
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- org.eclipse.jface.util.LocalSelectionTransfer
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- Direct Known Subclasses:
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:
- 3.2
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Constructor Summary
Constructors Modifier Constructor Description protected
LocalSelectionTransfer()
Only the singleton instance of this class may be used.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description ISelection
getSelection()
Returns the local transfer data.long
getSelectionSetTime()
Returns the time when the selection operation this transfer is associated with was started.static LocalSelectionTransfer
getTransfer()
Returns the singleton.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.void
setSelectionSetTime(long time)
Sets the time when the selection operation this transfer is associated with was started.-
Methods inherited from class org.eclipse.swt.dnd.ByteArrayTransfer
getSupportedTypes, isSupportedType
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Methods inherited from class org.eclipse.swt.dnd.Transfer
registerType, validate
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Method Detail
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getTransfer
public static LocalSelectionTransfer getTransfer()
Returns the singleton.- Returns:
- the singleton
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getSelection
public ISelection getSelection()
Returns the local transfer data.- Returns:
- the local transfer data
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getTypeIds
protected int[] getTypeIds()
Returns the type id used to identify this transfer.- Specified by:
getTypeIds
in classTransfer
- Returns:
- the type id used to identify this transfer.
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getTypeNames
protected String[] getTypeNames()
Returns the type name used to identify this transfer.- Specified by:
getTypeNames
in classTransfer
- Returns:
- the type name used to identify this transfer.
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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 classByteArrayTransfer
- Parameters:
object
- a javabyte[]
containing the data to be convertedtransferData
- an emptyTransferData
object that 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)
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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 classByteArrayTransfer
- 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:
ByteArrayTransfer.nativeToJava(TransferData)
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setSelection
public void setSelection(ISelection s)
Sets the transfer data for local use.- Parameters:
s
- the transfer data
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getSelectionSetTime
public long getSelectionSetTime()
Returns the time when the selection operation this transfer is associated with was started.- Returns:
- the time when the selection operation has started
- See Also:
TypedEvent.time
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setSelectionSetTime
public void setSelectionSetTime(long time)
Sets the time when the selection operation this transfer is associated with was started. If assigning this from an SWT event, be sure to usesetSelectionTime(event.time & 0xFFFF)
- Parameters:
time
- the time when the selection operation was started- See Also:
TypedEvent.time
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