/** @see prefuse.visual.VisualItem#getSourceTuple() */
public Tuple getSourceTuple() {
VisualTable vt = (VisualTable) m_table;
return vt.getVisualization().getSourceTuple(this);
}
/** @see prefuse.visual.VisualItem#getSourceData() */
public TupleSet getSourceData() {
VisualTable vt = (VisualTable) m_table;
return vt.getVisualization().getSourceData(vt.getGroup());
}