package cz.zah.util;

import java.io.Serializable;

/**
 * Informace o stavu v CVS archivu 
 * $Author: zah $ 
 * $Date: 2009/07/19 10:23:14 $ 
 * $ Revision:$ 
 * $State: Exp $
 * 
 * Log zm\u011bn $Log: StopWatch.java,v $
 * Log zm\u011bn Revision 1.1  2009/07/19 10:23:14  zah
 * Log zm\u011bn Vychozi verze
 * Log zm\u011bn
 */

/**
 * T\u0159ída definuje stopky
 * 
 * @author zah
 * @version 0.01
 * 
 *          Zalo\u017eeno 19.7.2009 Sou\u010dást projektu ZAH base project
 */
public class StopWatch implements Serializable {

    /**
     * Pole <code>serialVersionUID  long</code>
     */
    private static final long serialVersionUID = 1386037045174657498L;

    /**
     * Konstruktor  t\u0159ídy StopWatch
     * @param startTime
     * @param stopTime
     */
    protected StopWatch(long startTime, long stopTime) {
        super();
        this.startTime = startTime;
        this.stopTime = stopTime;
    }

    /**
     * Pole <code>startTime  Long</code>
     */
    private long startTime;

    /**
     * Pole <code>stopTime  Long</code>
     */
    private long stopTime;

    /**
     * Konstruktor t\u0159ídy StopWatch
     * 
     * @param startTime
     */
    public StopWatch(long startTime) {
        super();
        setStartTime(startTime);
    }

    /**
     * Konstruktor t\u0159ídy StopWatch
     */
    public StopWatch() {
        this(System.currentTimeMillis());
    }

    public Long getStartTime() {
        return startTime;
    }

    public Long getStopTime() {
        return stopTime;
    }

    public void setStartTime(long startTime) {
        this.startTime = startTime;
        this.stopTime = this.startTime;
    }

    public void setStopTime(long stopTime) {
        this.stopTime = stopTime;
    }

    /**
     * Metoda spusti stopky.
     */
    public void start() {
        setStartTime(System.currentTimeMillis());
    }

    /**
     * Metoda zastavuje stopky
     */
    public void stop() {
        setStopTime(System.currentTimeMillis());
    }

    /**
     * Metoda vraci uplynuly cas v milisekundach.
     * @return long uplynuly cas v milisekundach.
     */
    public long getInterval() {
        return stopTime - startTime;
    }
    
    /**
     * Metoda vraci instanci stopek s mezicasem
     * @return mezicas StopWatch
     */
    public StopWatch getMeantime(){
        return new StopWatch(this.startTime, System.currentTimeMillis());
    }  
}