/**
* @param source
* @param oldScalarMap The previous ScalarMap of the ScalarMapAdapter. May be <code>null</code>.
* @return The controlling ScalarMapAdapter of the display.
* @throws RemoteException
* @throws VisADException
*/
protected final synchronized ScalarMapAdapter accept(
ScalarMapAdapter source, ScalarMap oldScalarMap) throws VisADException, RemoteException {
ScalarMapAdapter adapter;
if (oldScalarMap != null) {
adapter = (ScalarMapAdapter) map.get(oldScalarMap);
if ((adapter != null) && (adapter == source)) {
map.remove(oldScalarMap);
changed = true;
}
}
ScalarMap newScalarMap = source.getScalarMap();
adapter = (ScalarMapAdapter) map.get(newScalarMap);
if (adapter != null) {
source.duplicate(adapter);
} else {
adapter = source;
map.put(newScalarMap, source);
changed = true;
}
if (changed) {
updater.update();
}
return adapter;
}
/**
* Remove an adapter
*
* @param adapter adapter to remove
*/
public final synchronized void remove(ScalarMapAdapter adapter) {
adapter.removePropertyChangeListener(adapter.SCALAR_MAP, listener);
ScalarMap scalarMap = adapter.getScalarMap();
ScalarMapAdapter source = (ScalarMapAdapter) map.get(scalarMap);
if ((source != null) && (source == adapter)) {
map.remove(scalarMap);
changed = true;
updater.update();
}
}
/**
* Accept the adapter
*
* @param adapter adapter in question
* @return the adapter
* @throws RemoteException Java RMI error
* @throws VisADException problem creating VisAD object
*/
public final ScalarMapAdapter accept(ScalarMapAdapter adapter)
throws VisADException, RemoteException {
adapter.addPropertyChangeListener(adapter.SCALAR_MAP, listener);
return accept(adapter, null);
}