/**
VOD 플레이어
나보균 / 2008-10-07
*/

var firstMouse = 0;     //클릭시 마우스좌표
var firstSlide = 0;     //클릭시 슬라이더 좌표
var dragChk = false;    //움직임
var playChk = false;    //플레이중
var barStart =0;        //플레이바 시작위치
var barSize = 144;      //플레이바 크기
var adPlayChk = false;
// 미디어 플레이어 컨트롤
function control(n)
{
	if(adPlayChk == false) return; // 초기화 되어야만 컨트롤 가능

    switch (n)
    {
        case 1:    // play
            $("ytnPlayer").Play();
            break;
        case 2:    // pause
            $("ytnPlayer").Pause();
            break;
        case 3:    // stop
            $("ytnPlayer").Stop();
            break;
        default:
    }
}

function barPosition()
{

    $("nowTime").innerHTML = TimeChk(ytnPlayer.CurrentPosition);
    $("totalTime").innerHTML = TimeChk(ytnPlayer.duration);

    if(dragChk == false)
    {
        $("progress_bar").style.pixelLeft = barStart + parseInt(ytnPlayer.CurrentPosition * barSize / ytnPlayer.duration);
    }

	if(ytnPlayer.duration)
	{
	    $("progress_state").style.width =parseInt(ytnPlayer.CurrentPosition * barSize / ytnPlayer.duration);
	}
}

function TimeChk(t)
{
    var s = parseInt(t) % 60;
    var m = parseInt(t / 60);
    return ((m < 10)?"0":"") + m + ":" + ((s < 10) ? "0" : "") + s;
}


function positionMove()
{
    if(!playChk) return;
    if(ytnPlayer.CurrentPosition == -1 ) return false;

    firstMouse = event.clientX;
    dragChk  = true;
    TrackBar = event.srcElement.parentElement;
    firstSlide = $("progress_bar").style.pixelLeft;
    document.onmousemove = moveSlider;
    document.onmouseup = stopSlider;
}

function moveSlider()
{
    if(dragChk)
    {
        var x = firstSlide + (event.clientX - firstMouse);  //마우스다운일때의 좌표
        if((barStart <= x ) && (x <= barStart + (barSize))) $("progress_bar").style.pixelLeft = x;
        return false;
    }
}


function stopSlider()
{
    dragChk = false;

    ytnPlayer.currentPosition  = positionChk($("progress_bar").style.pixelLeft - barStart)

    //일시 중지 일때, 즉 스라이더 움직임에 의해 중단되었을 때만, 다시 실행
    if(ytnPlayer.PlayState == 1) ytnPlayer.Play();

    document.onmousemove = null;
    document.onmouseup = null;
}

function positionChk(c)
{
    return parseInt((c) * ytnPlayer.Duration / barSize);
}


// 볼륨
var soundMin = -1500;
var soundMax = 0;
var soundValue = 0;
var oldSound = 0;
var soundStart = 0;
var soundSize = 55;    //볼륨바 크기

// 사운드 초기화
function soundInit()
{
    $("sound_progress").style.pixelLeft = soundStart + soundSize / 2  ;
    $("sound_state").style.width = $("sound_progress").style.pixelLeft - soundStart;
    ytnPlayer.Volume =  soundMin / 2;
	adPlayChk = true;
}

function soundOut()
{
    $("sound_progress").style.pixelLeft = 0;
    $("sound_state").style.width = 0;
    ytnPlayer.Volume = 0;

	adPlayChk = false;
//	$("bufferingStr").innerHTML = playChk;
}


function soundbarPosition()
{
    if(!playChk) return;

    firstMouse = event.clientX;                            //최초 마우스다운일때 좌표
    firstSlide = $("sound_progress").style.pixelLeft;      //최초 마우스다운 일때 슬라이더좌표
    oldSound = ytnPlayer.Volume;
    dragChk = true;
    document.onmousemove = soundbarMove;                   //onmousemove캡쳐
    document.onmouseup = soundbarStop;                     //onmousemove 해제
}

function soundbarMove()
{
    if(dragChk)
    {
        var x = firstSlide + event.clientX - firstMouse;    //최초 마우스다운일때 좌표에서 mousemove한 좌표값

        if((soundStart <= x  ) && (x <= soundStart + soundSize))
        {
            $("sound_progress").style.pixelLeft = x;        //마우스 이동한 만큼 슬라이더 이동
            $("sound_state").style.width = $("sound_progress").style.pixelLeft - soundStart;
            var m = x - firstSlide;    //마우스이동값
            var soundValue = oldSound - parseInt(m * soundMin / soundSize );

            if(soundValue <= -1500)
            {
                ytnPlayer.Volume = soundMin;
            }
            else if (soundValue >= soundMax)
            {
                ytnPlayer.Volume = soundMax;
            }
            else
            {
                ytnPlayer.Volume = soundValue;
            }
        }
        return false;
    }
}

function soundbarStop()
{
    dragChk = false;
}

function muteChk()
{
    if(!playChk) return;

    if(ytnPlayer.mute == false)
    {
        $("muteButton").src = "/img/vod/mute_on.gif";
        ytnPlayer.mute = true;
    }
    else
    {
        $("muteButton").src = "/img/vod/mute_off.gif";
        ytnPlayer.mute = false;
    }
}

function playerOperation(n)
{
	if(n == 0) // stop
	{
//		$("bufferingStr").style.display = "none";
		$("pauseButton").style.display = "none";
		$("playButton").style.display = "block";
		try{clearTimeout(playing);    }catch(e){return;}
	}
	else if(n == 1)  // pause
	{
//		$("bufferingStr").style.display = "none";
		$("pauseButton").style.display = "none";
		$("playButton").style.display = "block";
		try{clearTimeout(playing);    }catch(e){return;}
	}
	else if(n == 2)  // play
	{
//		$("bufferingStr").style.display = "none";
		playing = setInterval(barPosition,500);
		$("playButton").style.display = "none";
		$("pauseButton").style.display = "block";
		playChk = true;
	}
	else if(n == 3)  // buffering
	{
//        $("bufferingStr").style.display = "block";
	}
}

document.writeln("<script type=\"text/javascript\" event=\"PlayStateChange(OldState,NewState)\" for=\"ytnPlayer\">");
document.writeln("switch (NewState){");
document.writeln("case 0:");
document.writeln("playerOperation(0);");
document.writeln("break;");
document.writeln("case 1:");
document.writeln("playerOperation(1);");
document.writeln("break;");
document.writeln("case 2:");
document.writeln("playerOperation(2);");
document.writeln("break;");
document.writeln("case 3:");
document.writeln("playerOperation(2);");
document.writeln("break;");
document.writeln("default:");
document.writeln("}");
document.writeln("</script>");

window.onload = soundInit;