Eclipse GEF and Draw2d Plug-in Developer Guide (Galileo) - TransferDragSourceListener (Eclipse GEF API Specification)

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org.eclipse.gef.dnd
Interface TransferDragSourceListener

All Known Implementing Classes:: AbstractTransferDragSourceListener

Deprecated. use org.eclipse.jface.util.TransferDragSourceListener instead

public interface TransferDragSourceListener

A DragSourceListener that can handle one type of SWT Transfer. The purpose of a TransferDragSourceListener is to:

Determine enablement for a Drag operation. Enablement is often a function of the current Selection and/or other criteria.
Set data for a single type of Drag and Transfer.

DelegatingDragAdapter allows these functions to be implemented separately for unrelated types of Drags. DelegatingDragAdapter then combines the function of each TransferDragSourceListener, while allowing them to be implemented as if they were the only DragSourceListener.