adapter = new RepresentativeAnchorMouseAdapter();
c.addMouseListener(adapter);
c.addMouseMotionListener(adapter);
descriptor.getManager().addRemoveNotifyListener(removeNotifyDragListener = new RemoveNotifyDragListener(c, new RepresentativeAnchorDragListener(descriptor, c)));
dockable.addPropertyChangeListener(this);
descriptor.getCleaner().addCleaner(this);
}