// kribas Hannes
// 13-12-2005
// Vajab Timer klassi: http://www.codingforums.com/archive/index.php?t-10531.html

// N2ide 1 - slaidsh6u tyyp 1:
// <script type="text/javascript" src="timer.js"></script>
// <script type="text/javascript" src="random_img.js"></script>
// pilt1 = new ImageSlideshow("cool", 0);
// pilt1.set_timeout(1000);
// pilt1.set_height(100);
// pilt1.set_width(200);
// pilt1.add_image("1.jpg");
// pilt1.add_image("2.jpg");
// pilt1.init();
//
// N2ide 2 - slaidis6hu tyyp 2:
// pilt2 = new ImageSlideshow("cool", 0);
// pilt2.set_timeout(1000);
// pilt2.set_height(100);
// pilt2.set_width(200);
// pilt2.add_image("1.jpg");
// pilt2.add_image("2.jpg");
// pilt2.init();

// div_id - unikaalne div, mille sisse pilt l2heb
// images - piltide aadresside massiiv
// intSlideshowType - pildid
function ImageSlideshow(div_id, intSlideshowType)
{
	this.div_id = div_id;
	this.arrImages = new Array();
	this.intTimeoutDefault=1000;
	this.counter=0;
	this.intSlideshowType=intSlideshowType;
	this.intDivHeight=false;
	this.intDivWidth=false;

	this.timer = new Timer(this);

	// meetodid
	this.init = init;
	this.set_timeout = set_timeout;
	this.randomizearray = randomizearray;
	this.hell_or_heaven = hell_or_heaven; // brauserikontroll
	this.displaysplashes_as_img_notIE = displaysplashes_as_img_notIE;
	this.displaysplashes_as_img = displaysplashes_as_img;
	this.displaysplashes_as_div_background = displaysplashes_as_div_background;
	this.choose_slideshow_type = choose_slideshow_type;
	this.set_height = set_height;
	this.set_width = set_width;
	this.add_image = add_image;
} // ImageSlideshow

/**
 * Kui k6ik muutujad on paigas, pannakse init() abil script t88le.
 */
function init ()
{
	this.randomizearray(this.arrImages);
	this.choose_slideshow_type(this.intSlideshowType);
}

/**
 * Lisab pildid this.arrImages massiivi.
 */
function add_image(strSrc)
{
	var objImage = new Image();
	objImage.src = strSrc;
	this.arrImages[this.arrImages.length] = objImage;
}

/**
 * Siin valitakse slaidsh6u tyyp.
 *
 * Hetkel on v6imalik valida kahe slaidsh6u vahel. Yks t88tab div taustana, teine l2bi img tag'i.
 * Div taustana on siis hea kasutada, kui pildi suurused erinevad, kuid objekti suurus ei tohi
 * muutda. St kui pilt on suurem, kui n2htav osa, siis yleliigne osa kaob lihtsalt div'i alla.
 * L2bi pildi objekti n2eb ie's huvitavat fade effekti.
 */
function choose_slideshow_type(intSlideshowType)
{
	if (intSlideshowType==0)
	{
		var html = '<div id="'+this.div_id+'"><img src="'+this.arrImages[0]+'" alt="" id="splashimage_'+this.div_id+'"></div>';
		document.write(html);
		this.hell_or_heaven();
	}

	if (intSlideshowType==1)
	{
		var html = '<div id="'+this.div_id+'" style="width: '+this.intDivWidth+'; height: '+this.intDivHeight+';"></div>';
		document.write(html);
		this.timer.setTimeout("displaysplashes_as_div_background", 0, this.counter, this.arrImages, this.div_id);
	}
}

/**
 * Div'i v6i pildi k6rgus seadistamine.
 */
function set_height (intDivHeight)
{
	if (this.intDivHeight=intDivHeight)
		return true;
	else
		return false;
}

/**
 * Div'i v6i pildi pikkuse seadistamine.
 */
function set_width (intDivWidth)
{
	if (this.intDivWidth=intDivWidth)
		return true;
	else
		return false;
}

/**
 * Seadistab piltide vaheldumise intervalli millisekundites.
 */
function set_timeout (mytimeout)
{
	if (mytimeout)
		this.intTimeoutDefault = mytimeout;
	else
		alert ("Viga: Lisa konteineri kommentaari lahtrisse piltide vaheldumise aeg millisekundites. Kasutan vaikimisi 1000.");
}

/**
 * Keerab massiivi elemendid segamini.
 */
function randomizearray(arr)
{
	var i = arr.length;
	while(i--){
	        var j = Math.floor(Math.random() * ( i + 1 ));
	        var arr_tempi = arr[i];
	        var arr_tempj = arr[j];
	        arr[i] = arr_tempj;
	        arr[j] = arr_tempi;
	}
}

/**
 * IE kontroll.
 */
function hell_or_heaven ()
{
	var ieImages = new Array(); // ie effektide tarvis loome Image objektide massiivi
	
	if(navigator.appVersion.indexOf("Win")>=0 && parseFloat(navigator.appVersion.substring(navigator.appVersion.indexOf("MSIE ")+5), 10)>=4)
	{
		for(i=0;i<this.arrImages.length;i++)
		{
			ieImages[i] = new Image();
            ieImages[i].src = this.arrImages[i];
		}
	
		this.timer.setTimeout("displaysplashes_as_img", 0, this.counter, ieImages, this.div_id);
	}
	else
	{
		this.timer.setTimeout("displaysplashes_as_img_notIE", 0, this.counter, this.arrImages, this.div_id);
	}

}

/**
 * Muudab pilte pildi objekti kaudu k6ikidele brauseritele va IE
 */
function displaysplashes_as_img_notIE(local_count, local_images, local_div_id)
{
	var img_bigsplash = document.getElementById(local_div_id).getElementsByTagName('img');

	if (local_images.length==local_count)
		local_count = 0;

	if (this.intDivHeight==false)
		height = local_images[local_count].height;
	else
		height = this.intDivHeight;

	if (this.intDivWidth==false)
		width = local_images[local_count].width;
	else
		width = this.intDivWidth;

	img_bigsplash[0].src = local_images[local_count].src;
	img_bigsplash[0].height = height;
	img_bigsplash[0].width = width;

	local_count++;

	//window.setTimeout(this.displaysplashes_notIE, this.timeout);
	this.timer.setTimeout("displaysplashes_as_img_notIE", this.intTimeoutDefault, local_count, local_images, local_div_id);
}

/**
 * Muudab pilte pildi objekti kaudu IE jaoks.
 */
function displaysplashes_as_img(local_count, local_images, local_div_id)
{
	if (local_images.length==local_count)
	{
		local_count = 0;
	}
	
	if(navigator.userAgent.indexOf("MSIE 4.0") > 1)
		eval ("splashimage_"+local_div_id+".style.filter = 'revealTrans(transition=7,duration=2)';");
	else
		eval ("splashimage_"+local_div_id+".style.filter = 'progid:DXImageTransform.Microsoft.GradientWipe(GradientSize=1.00,wipestyle=0,motion=reverse)';")
		
	eval ("splashimage_"+local_div_id+".filters[0].Apply(); "+
	"splashimage_"+local_div_id+".style.display = 'block';"+
	"splashimage_"+local_div_id+".filters[0].Play();"+
	"splashimage_"+local_div_id+".src = local_images[local_count].src;");
    

	local_count++;
	this.timer.setTimeout("displaysplashes", this.intTimeoutDefault, local_count, local_images, local_div_id);	
}

/**
 * Muudab pilte div'i taustana.
 */
function displaysplashes_as_div_background (local_count, local_images, local_div_id)
{
	var objDiv = document.getElementById(local_div_id);

	if (local_images.length==local_count)
		local_count = 0;
	
	if (this.intDivHeight==false)
		height = local_images[local_count].height;
	else
		height = this.intDivHeight;

	if (this.intDivWidth==false)
		width = local_images[local_count].width;
	else
		width = this.intDivWidth;

	objDiv.style.background = "url("+local_images[local_count].src+")";
	objDiv.style.height = height+"px";
	objDiv.style.width = width+"px";

	local_count++;

	this.timer.setTimeout("displaysplashes_as_div_background", this.intTimeoutDefault, local_count, local_images, local_div_id);
}