/*

 * JavaScript file

 */

var SETUP_ID = 1;

var timervalue = 0;

var initialTimer = 0;

var timeoutId = null;

function init()

{

	showMainWindow();

	widget.setDisplayPortrait();

}

function startTimer() {

	var hr = parseInt(document.getElementById("hrs").value);

	var min = parseInt(document.getElementById("min").value);

	var sec = parseInt(document.getElementById("sec").value);

	timervalue = hr * 3600 + min * 60 + sec;

	initialTimer = timervalue;

	showMainWindow();

	startCountdown();

}

function startCountdown() {

	if (timeoutId) {

		clearInterval(timeoutId);

	}

	timeoutId = window.setInterval(tick, 1000);

	tick();

}

function tick() {

	if (timervalue > 0) {

		timervalue = timervalue - 1;

		var hrs = Math.floor(timervalue / 3600);

		var mins = Math.floor((timervalue % 3600) / 60);

		var sec = timervalue % 60;

		var sz = pad(hrs) + ":" + pad(mins) + ":" + pad(sec);

		document.getElementById("timervalue").innerHTML = sz;

		document.getElementById("sand").style.top=(50 * (initialTimer-timervalue)/initialTimer).toFixed(0) + "%";

		document.getElementById("sand-bottom").style.top=(50+(50 * timervalue/initialTimer)).toFixed(0) + "%";

		if (timervalue == 0) {

			cancelTimer();

		}

	}

}

function pad(num) {

	if (num < 10) {

		return '0' + num;

	} else {

		return num;

	}

}

function cancelTimer() {

	clearInterval(timeoutId);

	timeoutId = 0;

	timervalue = 0;

	document.getElementById("timervalue").innerHTML = "00:00:00";

	document.getElementById("sand").style.top="50%";

	document.getElementById("sand-bottom").style.top="50%";

}

function showMainWindow() {

	document.getElementById("main-window").style.display = "inherit";

	document.getElementById("time-setup").style.display = "none";

	var item = new MenuItem("Setup timer", SETUP_ID);

	item.onSelect = showTimerSetup;

	menu.append(item);

	menu.setRightSoftkeyLabel("Exit", null);

}

function showTimerSetup() {

	document.getElementById("main-window").style.display = "none";

	document.getElementById("time-setup").style.display = "inherit";

	var item = menu.getMenuItemById(SETUP_ID);

	menu.remove(item);

	menu.setRightSoftkeyLabel("Cancel", showMainWindow);

}

var paused = false;

function pauseStart() {

	if (paused) {

		startCountdown();

		document.getElementById("pausestart").style.backgroundPosition = "0px 0px";

		paused = false;

	} else {

		if (timeoutId) {

			window.clearInterval(timeoutId);

			timeoutId = null;

		}

		document.getElementById("pausestart").style.backgroundPosition = "0px 32px";

		paused = true;

	}

}