/*
* Copyright 2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.statemachine.state;
import java.util.List;
import org.springframework.statemachine.StateContext;
/**
* Base implementation of a {@link PseudoState}.
*
* @author Janne Valkealahti
*
* @param <S> the type of state
* @param <E> the type of event
*/
public abstract class AbstractPseudoState<S, E> implements PseudoState<S, E> {
private final PseudoStateKind kind;
private final CompositePseudoStateListener<S, E> pseudoStateListener = new CompositePseudoStateListener<S, E>();
/**
* Instantiates a new abstract pseudo state.
*
* @param kind the kind
*/
public AbstractPseudoState(PseudoStateKind kind) {
this.kind = kind;
}
@Override
public PseudoStateKind getKind() {
return kind;
}
@Override
public State<S, E> entry(StateContext<S, E> context) {
return null;
}
@Override
public void exit(StateContext<S, E> context) {
}
@Override
public void addPseudoStateListener(PseudoStateListener<S, E> listener) {
pseudoStateListener.register(listener);
}
@Override
public void setPseudoStateListeners(List<PseudoStateListener<S, E>> listeners) {
pseudoStateListener.setListeners(listeners);
}
/**
* Notify all {@link PseudoStateListener}s of a new context.
*
* @param context the new context
*/
protected void notifyContext(PseudoStateContext<S, E> context) {
pseudoStateListener.onContext(context);
}
}