StateMachine.java

package org.zstack.core.statemachine;

public interface StateMachine<T extends Enum<T>, K extends Enum<K>> {
    void addTranscation(T old, K evt, T next);
    
    T getNextState(T old, K evt);
    
    void addListener(StateMachineListener<T, K> l);
    
    void removeListener(StateMachineListener<T, K> l);
    
    void fireBeforeListener(T old, K evt, T next, Object...args);
    
    void fireAfterListener(T prev, K evt, T curr, Object...args);
}