Contains the functionality for dragging a {@link com.javadocking.dockable.Dockable} from one {@link com.javadocking.dock.Dock} and docking it into another dock.
Information on using dragging is in How to Use the Dragging in The Sanaware Developer Guide.
There are 2 main interfaces: {@link com.javadocking.drag.DragListener} and
{@link com.javadocking.drag.Dragger}.
A drag listener listens to mouse events and decides what should be done:
The dragger contains the real drag functionality.