Function useStopwatch

web/pgadmin/static/js/custom_hooks.js:119–162

()

}

export function useStopwatch() {
  const prevTime = useRef(new Date());
  const [totalMsec, setTotalMsec] = useState(0);
  const [isRunning, setIsRunning] = useState(false);

  useInterval(() => {
    setTotalMsec(moment(new Date()).diff(prevTime.current));
  }, isRunning ? 100 : -1);

  function start(startTime) {
    prevTime.current = startTime || new Date();
    setIsRunning(true);
  }

  const pause = (endTime)=>{
    setIsRunning(false);
    setTotalMsec(moment(endTime || new Date()).diff(prevTime.current));
  };

  function reset() {
    setTotalMsec(0);
  }

  let msec = totalMsec;
  /* Extract seconds from millisecs */
  let seconds = parseInt(msec/1000);
  msec = msec%1000;

  /* Extract mins from seconds */
  let minutes = parseInt(seconds/60);
  seconds = seconds%60;

  /* Extract hrs from mins */
  let hours = parseInt(minutes/60);
  minutes = minutes%60;

  return {
    hours: hours,
    minutes: minutes,
    seconds: seconds,
    msec: msec,
    start, pause, reset, isRunning,
  };
}

/*
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