org.eclipse.swt.dnd

Class TableDropTargetEffect

java.lang.Object

org.eclipse.swt.dnd.DropTargetAdapter

org.eclipse.swt.dnd.DropTargetEffect

org.eclipse.swt.dnd.TableDropTargetEffect

All Implemented Interfaces:

java.util.EventListener, DropTargetListener, SWTEventListener

public class TableDropTargetEffect
extends DropTargetEffect

This class provides a default drag under effect (eg. select, insert and scroll) when a drag occurs over a Table.

Classes that wish to provide their own drag under effect for a Table can extend the TableDropTargetEffect and override any applicable methods in TableDropTargetEffect to display their own drag under effect.

Subclasses that override any methods of this class must call the corresponding super method to get the default drag under effect implementation.

The feedback value is either one of the FEEDBACK constants defined in class DND which is applicable to instances of this class, or it must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those DND effect constants.

Feedback:

FEEDBACK_SELECT, FEEDBACK_SCROLL

Since:

3.3

See Also:

DropTargetAdapter, DropTargetEvent, Sample code and further information

Structure Diagram

Field Summary

Fields

Modifier and Type	Field and Description
(package private) TableItem	dropHighlight
(package private) int	iItemInsert
(package private) static int	SCROLL_HYSTERESIS
(package private) long	scrollBeginTime
(package private) int	scrollIndex

Fields inherited from class org.eclipse.swt.dnd.DropTargetEffect

control

Constructor Summary

Constructors

Constructor and Description
TableDropTargetEffect(Table table) Creates a new TableDropTargetEffect to handle the drag under effect on the specified Table.

Method Summary

Methods

Modifier and Type	Method and Description
(package private) int	checkEffect(int effect)
void	dragEnter(DropTargetEvent event) This implementation of dragEnter provides a default drag under effect for the feedback specified in event.feedback.
void	dragLeave(DropTargetEvent event) This implementation of dragLeave provides a default drag under effect for the feedback specified in event.feedback.
void	dragOver(DropTargetEvent event) This implementation of dragOver provides a default drag under effect for the feedback specified in event.feedback.

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

getControl, getItem, getItem, getItem, nextItem, previousItem

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

dragOperationChanged, drop, dropAccept

Methods inherited from class java.lang.Object

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

Field Detail

SCROLL_HYSTERESIS

static final int SCROLL_HYSTERESIS

See Also:

Constant Field Values

scrollIndex

int scrollIndex

scrollBeginTime

long scrollBeginTime

dropHighlight

TableItem dropHighlight

iItemInsert

int iItemInsert

Constructor Detail

TableDropTargetEffect

public TableDropTargetEffect(Table table)

Creates a new TableDropTargetEffect to handle the drag under effect on the specified Table.

Parameters:

table - the Table over which the user positions the cursor to drop the data

Method Detail

checkEffect

int checkEffect(int effect)

dragEnter

public void dragEnter(DropTargetEvent event)

This implementation of dragEnter provides a default drag under effect for the feedback specified in event.feedback. For additional information see DropTargetAdapter.dragEnter. Subclasses that override this method should call super.dragEnter(event) to get the default drag under effect implementation.

Specified by:

dragEnter in interface DropTargetListener

Overrides:

dragEnter in class DropTargetAdapter

Parameters:

event - the information associated with the drag enter event

See Also:

DropTargetAdapter, DropTargetEvent

dragLeave

public void dragLeave(DropTargetEvent event)

This implementation of dragLeave provides a default drag under effect for the feedback specified in event.feedback. For additional information see DropTargetAdapter.dragLeave. Subclasses that override this method should call super.dragLeave(event) to get the default drag under effect implementation.

Specified by:

dragLeave in interface DropTargetListener

Overrides:

dragLeave in class DropTargetAdapter

Parameters:

event - the information associated with the drag leave event

See Also:

DropTargetAdapter, DropTargetEvent

dragOver

public void dragOver(DropTargetEvent event)

This implementation of dragOver provides a default drag under effect for the feedback specified in event.feedback. The class description lists the FEEDBACK constants that are applicable to the class. For additional information see DropTargetAdapter.dragOver. Subclasses that override this method should call super.dragOver(event) to get the default drag under effect implementation.

Specified by:

dragOver in interface DropTargetListener

Overrides:

dragOver in class DropTargetAdapter

Parameters:

event - the information associated with the drag over event

See Also:

DropTargetAdapter, DropTargetEvent, DND.FEEDBACK_SELECT, DND.FEEDBACK_SCROLL