/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.mobicents.protocols.ss7.m3ua.impl.fsm;

/**
 * 
 * @author amit bhayani
 * @author kulikov
 * 
 */
public class Transition {

	private String name;
	protected State destination;

	private TransitionHandler handler;

	protected Transition(String name, State destination) {
		this.name = name;
		this.destination = destination;
	}

	public String getName() {
		return name;
	}

	public void setHandler(TransitionHandler handler) {
		this.handler = handler;
	}

	protected State process(State state) {
		// leave current state
		state.leave();

		// new Thread(this).start();
		if (handler != null) {
			if (!handler.process(state)) {
				// If handler couldn't process this transition successfully,
				// return the old state. But this means the LeaveAction could
				// have been executed and we are ok with that. Also we call
				// cancelLeave on State so as to assign back the last timeout
				// value
				state.cancelLeave();
				return state;
			}
		}

		// enter to the destination
		this.destination.enter();
		return this.destination;
	}

	@Override
	public String toString() {
		return name;
	}
}