private CStationPerspective workingArea;
private LocationHistory history = new LocationHistory();
public CStationPerspective getParent(){
PerspectiveDockable dockable = intern().asDockable();
while( dockable != null ){
PerspectiveStation parent = dockable.getParent();
if( parent == null ){
return null;
}
if( parent instanceof CommonElementPerspective ){
CElementPerspective cparent = ((CommonElementPerspective)parent).getElement();