org.eclipse.swt.dnd
Class DragSourceEvent

java.lang.Object
  Event
      org.eclipse.swt.events.TypedEvent
          org.eclipse.swt.dnd.DragSourceEvent

public class DragSourceEvent
extends TypedEvent

The DragSourceEvent contains the event information passed in the methods of the DragSourceListener.

Since:

1.3

See Also:

DragSourceListener

Field Summary

TransferData	dataType The type of data requested.
int	detail The operation that was performed.
boolean	doit In dragStart, the doit field determines if the drag and drop operation should proceed; in dragFinished, the doit field indicates whether the operation was performed successfully.
static int	DRAG_END
static int	DRAG_SET_DATA
static int	DRAG_START
Image	image The drag source image to be displayed during the drag.
int	offsetX In dragStart, the x offset (relative to the image) where the drag source image will be displayed.
int	offsetY In dragStart, the y offset (relative to the image) where the drag source image will be displayed.
int	time the time that the event occurred.
int	x In dragStart, the x coordinate (relative to the control) of the position the mouse went down to start the drag.
int	y In dragStart, the y coordinate (relative to the control) of the position the mouse went down to start the drag.

Fields inherited from class org.eclipse.swt.events.TypedEvent

data, display, widget

Constructor Summary

DragSourceEvent(Widget widget, int id)

Method Summary

static void	addListener(Adaptable adaptable, DragSourceListener listener)
protected boolean	allowProcessing()
protected void	dispatchToObserver(java.lang.Object listener)
static java.lang.Object[]	getListeners(Adaptable adaptable)
protected java.lang.Class	getListenerType()
static boolean	hasListener(Adaptable adaptable)
static void	removeListener(Adaptable adaptable, DragSourceListener listener)
java.lang.String	toString()

Methods inherited from class org.eclipse.swt.events.TypedEvent

executeNext, getSource, processEvent

Methods inherited from class java.lang.Object

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

Field Detail

DRAG_START

public static final int DRAG_START

See Also:

Constant Field Values

DRAG_END

public static final int DRAG_END

See Also:

Constant Field Values

DRAG_SET_DATA

public static final int DRAG_SET_DATA

See Also:

Constant Field Values

detail

public int detail

The operation that was performed.

See Also:

DND.DROP_NONE, DND.DROP_MOVE, DND.DROP_COPY, DND.DROP_LINK, DND.DROP_TARGET_MOVE

doit

public boolean doit

In dragStart, the doit field determines if the drag and drop operation should proceed; in dragFinished, the doit field indicates whether the operation was performed successfully.

In dragStart:

Flag to determine if the drag and drop operation should proceed. The application can set this value to false to prevent the drag from starting. Set to true by default.

In dragSetData:

This will be set to true when the call to dragSetData is made. Set it to false to cancel the drag.

In dragFinished:

Flag to indicate if the operation was performed successfully. True if the operation was performed successfully.

x

public int x

In dragStart, the x coordinate (relative to the control) of the position the mouse went down to start the drag.

y

public int y

In dragStart, the y coordinate (relative to the control) of the position the mouse went down to start the drag.

dataType

public TransferData dataType

The type of data requested. Data provided in the data field must be of the same type.

image

public Image image

The drag source image to be displayed during the drag.

A value of null indicates that no drag image will be displayed.

The default value is null.

offsetX

public int offsetX

In dragStart, the x offset (relative to the image) where the drag source image will be displayed.

offsetY

public int offsetY

In dragStart, the y offset (relative to the image) where the drag source image will be displayed.

time

public int time

the time that the event occurred. NOTE: This field is an unsigned integer and should be AND'ed with 0xFFFFFFFFL so that it can be treated as a signed long.

Constructor Detail

DragSourceEvent

public DragSourceEvent(Widget widget,
                       int id)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class TypedEvent

dispatchToObserver

protected void dispatchToObserver(java.lang.Object listener)

Overrides:

dispatchToObserver in class TypedEvent

allowProcessing

protected boolean allowProcessing()

Overrides:

allowProcessing in class TypedEvent

getListenerType

protected java.lang.Class getListenerType()

Overrides:

getListenerType in class TypedEvent

hasListener

public static boolean hasListener(Adaptable adaptable)

addListener

public static void addListener(Adaptable adaptable,
                               DragSourceListener listener)

removeListener

public static void removeListener(Adaptable adaptable,
                                  DragSourceListener listener)

getListeners

public static java.lang.Object[] getListeners(Adaptable adaptable)