org.lsst.ccs

Interface StateChangeListener

public interface StateChangeListener

An internal listener to state changes. This interface is to be used by parties interested in being notified of a particular state change. StateChangeListeners are to be registered with an Agent by providing the list of states for which to be notified.

Author:

The LSST CCS Team

Method Summary

Modifier and Type	Method and Description
void	stateChanged(Object changedObj, Enum newState, Enum oldState) This method is called back when there is a state change

Method Detail

stateChanged

void stateChanged(Object changedObj,
                  Enum newState,
                  Enum oldState)

This method is called back when there is a state change

Parameters:

changedObj - the object for which the state change happened. If no component object exists then we return the name of the component.

newState - The new state.

oldState - The old state.