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 * Copyright (c) 2012, tickcode.org
 * All rights reserved.
 * 
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 * modification, are permitted provided that the following conditions are met:
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 *       documentation and/or other materials provided with the distribution.
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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package org.tickcode.trace;

import java.util.ArrayList;

public class BreadCrumbTrail {

	private static ThreadLocal activeTrail = new ThreadLocal(){
		@Override
		protected BreadCrumbTrail initialValue() {
			return new BreadCrumbTrail();
		}
	};
	
	public static BreadCrumbTrail get(){
		return activeTrail.get();
	}
	
	ArrayList trail = new ArrayList();
	public void add(BreadCrumb crumb){
		trail.add(crumb);
	}
	
	private BreadCrumbTrail(){
		
	}

	
	@Override
	public String toString() {
		StringBuffer buffer = new StringBuffer();
		for(int i=0; i < trail.size(); i++){
			if(i > 0)
				buffer.append("\n");
			buffer.append(trail.get(i));
		}
		return buffer.toString();
	}
	
	public BreadCrumbTrail reset(){
		trail.clear();
		return this;
	}
	
	public int size(){
		return trail.size();
	}
}