//
// Configuration
//

// If you would like to use a custom loading image or close button reference them in the next two lines.
var loadingImage = 'gfx/8-1.gif';		
var closeButton = 'gfx/close.gif';
var WaitingForResponse = '<img src="/gfx/doingsth.gif"> Czekam na odpowiedź serwera...';
var ProcessingData = '<img src="/gfx/doingsth.gif"> Przetwarzam dane...';
var AddComment = 'Dodaj komentarz';


// wyświetla formularz logowania

function AddLoginBox() {
 		var objCommentsForm = document.getElementById('CommentsForm');
		if(objCommentsForm.style.display == 'none')
			loginForm(1);
		else
			objCommentsForm.style.display = 'none';
}

function loginForm(text) {
	var objCommentsForm = document.getElementById('CommentsForm');
	objCommentsForm.style.display = 'block';
	
	if (text == 1) { text = 'WprowadĄ swój login i hasło.'; }
	if (text == 2) { text = 'Błąd logowania.'; }
			
	if(!fudlogedin) 	{
		objCommentsForm.innerHTML = '<span>'+ text + '</span>login: <input type="text" id="login"/> hasło: <input type="password" id="pass"/> <a href="javascript:;" onclick="ajaxLogin();">zaloguj</a>';
	}
}

function AddNewComment() {
	if (fudlogedin) {
 		var objCommentsForm = document.getElementById('CommentsForm');
		if(objCommentsForm.style.display == 'block')
			objCommentsForm.style.display = 'none';
		else
			objCommentsForm.style.display = 'block';
	}
	else
		alert('Aby dodać komentarz musisz być zalogowany');
}

function AjaxRequest() {
	var xmlHttp;
	if (window.XMLHttpRequest) {
 			xmlHttp = new XMLHttpRequest();
			if (xmlHttp.overrideMimeType) {
				xmlHttp.overrideMimeType('text/xml');
			}
		} 
		else if (window.ActiveXObject) {
			try {
				xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
					xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			}
	    }
	    
	if(!xmlHttp)
		alert('Błąd podczas tworzenia obiektu XMLHttpRequest');
	else
		return xmlHttp;
}

// ajaxowe logowanie
function ajaxLogin() {
		var lf = document.getElementById('CommentsForm');
		var lreq = AjaxRequest(); 		
	  		
		lreq.onreadystatechange = function() { 
			lf.innerHTML = WaitingForResponse;
			if(lreq.readyState == 4) {
				if(lreq.status == 200) {
					if (lreq.responseText.indexOf("ERROR") > 0) {
							loginForm(2);
						}
						if (lreq.responseText.indexOf("OK") > 0) {	
							fudlogedin = 1;
							lf.innerHTML = kForm;
							var llink = document.getElementById('AddLoginBox');
							llink.textContent = AddComment;
						}
					}	
					else {
						 lf.innerHTML="Error: returned status code " + lreq.status + " " + lreq.statusText;
					}	
				} 
	  	}; 

		var login = document.getElementById('login').value;
		var pass  = document.getElementById('pass').value;
		var parameters = 	"use_ajax=" + encodeURI('true') + "&login=" + encodeURI(login) +	"&pass=" + encodeURI(pass);

		lreq.open('POST', '/login.php', true);
		lreq.overrideMimeType('text/html; charset=ISO-8859-2');
		lreq.setRequestHeader("Content-type", "application/x-www-form-urlencoded; charset:ISO-8859-2");
	   lreq.setRequestHeader("Content-length", parameters.length);
	   lreq.setRequestHeader("Connection", "close");
	   lreq.send(parameters);
}



// Pobiera i wyświetla komentarze
function GetComments(id) {
		var kk = document.getElementById('CommentsDiv');
		var req = AjaxRequest(); 
		kk.innerHTML=ProcessingData;
		req.onreadystatechange = function() { 
			 kk.innerHTML = WaitingForResponse;
			if(req.readyState == 4) {
				if(req.status == 200) {
					 kk.innerHTML = req.responseText;
					 if (text != ""){
						var objCommentsForm = document.getElementById('CommentsForm');
						objCommentsForm.innerHTML = '<span>Komentarz dodany</span>';
					}
				}	
				else {
					 kk.innerHTML="Error: returned status code " + req.status + " " + req.statusText;
				}	
			} 
		}; 
		
		if(fudlogedin) {
		var text  = document.getElementById('komform').value;
			if (text.length  > 1000) {
				var objCommentsForm = document.getElementById('CommentsForm');
				objCommentsForm.innerHTML = '<span>Wpisany komentarz przekracza maksymalną długość o '+ (text.length - 1000) +' znaki</span>'+kForm;
				 document.getElementById('komform').value = text;
				var text = '';
			}	
		}
		else {
		 var text = '';
		}

		var parameters = "text=" + encodeURIComponent( text );
		req.open('POST', '/ajax.php?get=komentarze&id='+id, true);
		req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
 	   req.setRequestHeader("Content-length", parameters.length);
	   req.setRequestHeader("Connection", "close");
	   req.send(parameters);
}
//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){
	var yScroll;
	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}
	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	var xScroll, yScroll;
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}

	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}


//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}

//
// getKey(key)
// Gets keycode. If 'x' is pressed then it hides the lightbox.
//

function getKey(e){
	if (e == null) { // ie
		keycode = event.keyCode;
	} else { // mozilla
		keycode = e.which;
	}
	key = String.fromCharCode(keycode).toLowerCase();
	
	if(key == 'x'){ hideLightbox(); }
}


//
// listenKey()
//
function listenKey () {	document.onkeypress = getKey; }

//
// showLightbox()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
function showLightbox(objLink)
{
	var imageid = objLink.href.split("id=")[1];
	imageid = imageid.split("&")[0];
  var	uid = objLink.href.split("uid=")[1];
	uid = uid.split("&")[0];

	var ucat = objLink.href.split("ucid=")[1];
	ucat = ucat.split("&")[0];

		var pozo = document.getElementById('pozo');
		pozo.href = '?s=galerie_zobacz&ucid='+ucat+'&uid='+uid;

	kForm = '<textarea cols=60 rows=5 id="komform"></textarea>&nbsp;<br/><input type="button" onclick="GetComments('+imageid+')" value="dodaj komentarz"/>';	

	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objCaption = document.getElementById('lightboxCaption');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');
	var objLightboxDetails = document.getElementById('lightboxDetails');

	var objCommentsForm = document.getElementById('CommentsForm');
	if(fudlogedin) {
		objCommentsForm.innerHTML = kForm;
	}
	else {
		objCommentsForm.innerHTML = 'Aby dodać komentarz musisz byc zalogowany. <a href="javascript:;" onclick="loginForm(1);">Kliknij by się zalogować</a>';
	}
	
	GetComments(imageid);
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// center loadingImage if it exists
	if (objLoadingImage) {
		objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px');
		objLoadingImage.style.left = (((arrayPageSize[0] - 20 - objLoadingImage.width) / 2) + 'px');
		objLoadingImage.style.display = 'block';
	}

	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';

	// preload image
	imgPreload = new Image();
	var phpPreloader = new Image();
	phpPreloader.src = 'gfx/doingsth.gif';


	imgPreload.onload=function(){
		objImage.src = objLink.href;

		// center lightbox and make sure that the top and left values are not negative
		// and the image placed outside the viewport
		
		if (	imgPreload.width	< 450) {	
			szerkosc = 450;
		}
		else 	{
			szerkosc = imgPreload.width;
		}
	
		var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2);
		var lightboxLeft = ((arrayPageSize[0] - 20 - szerkosc ) / 2);

		objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
		objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";


		objLightboxDetails.style.width =  szerkosc +'px';
		
		if(objLink.getAttribute('title')) {
			objCaption.style.display = 'block';
			//objCaption.style.width = imgPreload.width + 'px';
			objCaption.innerHTML = objLink.getAttribute('title');
		}
		else {
			objCaption.style.display = 'none';
		}
		
		// A small pause between the image loading and displaying is required with IE,
		// this prevents the previous image displaying for a short burst causing flicker.
		if (navigator.appVersion.indexOf("MSIE")!=-1){
			pause(250);
		} 

		if (objLoadingImage) {	objLoadingImage.style.display = 'none'; }

		// Hide select boxes as they will 'peek' through the image in IE
		selects = document.getElementsByTagName("select");
        for (i = 0; i != selects.length; i++) {
                selects[i].style.visibility = "hidden";
        }
        
		document.getElementById('banner_top').style.visibility = "hidden";
		if(document.getElementById('reklama') != null) 
		{
 				document.getElementById('reklama').style.visibility = "hidden";
		}
		objLightbox.style.display = 'block';

		// After image is loaded, update the overlay height as the new image might have
		// increased the overall page height.
		arrayPageSize = getPageSize();
		objOverlay.style.height = (arrayPageSize[1] + 'px');
		
		// Check for 'x' keypress
		//listenKey();

		return false;
	}

	imgPreload.src = objLink.href;
	
}





//
// hideLightbox()
//
function hideLightbox() {
	// get objects
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');

	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';

	// make select boxes visible
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}
	
	
	var rek = document.getElementById('reklama');
	if (rek != null)
  		rek.style.visibility = "visible";

	
	document.getElementById('banner_top').style.visibility = "visible";

	
	// disable keypress listener
	document.onkeypress = '';
}




//
// initLightbox()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//
function initLightbox()
{
	if (!document.getElementsByTagName){ return; }
	var anchors = document.getElementsByTagName("a");

	// loop through all anchor tags
	for (var i=0; i<anchors.length; i++){
		var anchor = anchors[i];

		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "lightbox")){
			anchor.onclick = function () {showLightbox(this); return false;}
		}
	}
	
	var objBody = document.getElementsByTagName("body").item(0);
	
	// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay');
	objOverlay.onclick = function () {hideLightbox(); return false;}
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90000';
 	objOverlay.style.width = '100%';
	objBody.insertBefore(objOverlay, objBody.firstChild);
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// preload and create loader image
	var imgPreloader = new Image();

	// if loader image found, create link to hide lightbox and create loadingimage
	imgPreloader.onload=function(){

		var objLoadingImageLink = document.createElement("a");
		objLoadingImageLink.setAttribute('href','#');
		objLoadingImageLink.onclick = function () {hideLightbox(); return false;}
		objOverlay.appendChild(objLoadingImageLink);
		
		var objLoadingImage = document.createElement("img");
		objLoadingImage.src = loadingImage;
		objLoadingImage.setAttribute('id','loadingImage');
		objLoadingImage.style.position = 'absolute';
		objLoadingImage.style.zIndex = '150000';
		objLoadingImageLink.appendChild(objLoadingImage);

		imgPreloader.onload=function(){};	//	clear onLoad, as IE will flip out w/animated gifs

		return false;
	}

	imgPreloader.src = loadingImage;

	// create lightbox div, same note about styles as above
	var objLightbox = document.createElement("div");
	objLightbox.setAttribute('id','lightbox');
	objLightbox.style.display = 'none';
	objLightbox.style.position = 'absolute';
	objLightbox.style.zIndex = '100000';	
	objBody.insertBefore(objLightbox, objOverlay.nextSibling);
	
	// create link
	var objLink = document.createElement("a");
	objLink.setAttribute('href','#');
	objLink.setAttribute('title','Zamknij');
	objLink.onclick = function () {hideLightbox(); return false;}
	objLightbox.appendChild(objLink);
	
	// preload and create close button image
	var imgPreloadCloseButton = new Image();

	// if close button image found, 
	imgPreloadCloseButton.onload=function(){

		var objCloseButton = document.createElement("img");
		objCloseButton.src = closeButton;
		objCloseButton.setAttribute('id','closeButton');
		objCloseButton.style.position = 'absolute';
		objCloseButton.style.zIndex = '200000';
		objLink.appendChild(objCloseButton);

		return false;
	}

	imgPreloadCloseButton.src = closeButton;

	// create image
	var objImage = document.createElement("img");
	objImage.setAttribute('id','lightboxImage');
	objLink.appendChild(objImage);
	
	// create details div, a container for the caption and keyboard message
	var objLightboxDetails = document.createElement("div");
	objLightboxDetails.setAttribute('id','lightboxDetails');
	objLightbox.appendChild(objLightboxDetails);

	// create caption
	var objCaption = document.createElement("div");
	objCaption.setAttribute('id','lightboxCaption');
	objCaption.style.display = 'none';
	objLightboxDetails.appendChild(objCaption);

	// create keyboard message
	var objKeyboardMsg = document.createElement("div");
	objKeyboardMsg.setAttribute('id','keyboardMsg');
	
	var KeyMsgText = '<a id="pozo" href="#">Pozostałe zdjęcia uzytkownika</a> &#8226; ';	
	if (fudlogedin) {
		KeyMsgText = KeyMsgText + '<a href="#" onclick="AddNewComment(); return false;">'+AddComment+'</a> &#8226; ';
	}
	else 	{
	KeyMsgText = KeyMsgText + '<a id="AddLoginBox" href="#" onclick="AddLoginBox(); return false;">Zaloguj się</a> &#8226; ';
	}
	KeyMsgText = KeyMsgText + '<a href="#" onclick="hideLightbox(); return false;">Zamknij</a>';

	objKeyboardMsg.innerHTML = KeyMsgText; 
	objLightboxDetails.appendChild(objKeyboardMsg);
	
	// tworzy div na formularz dodawania komentarza
	var objCommentsForm = document.createElement("div");
	objCommentsForm.setAttribute('id','CommentsForm');
	objCommentsForm.style.display = 'none';
	objLightboxDetails.appendChild(objCommentsForm);	

	var objComments = document.createElement("div");
	objComments.setAttribute('id','CommentsDiv');
	objLightboxDetails.appendChild(objComments);
}


//
// addLoadEvent()
// Adds event to window.onload without overwriting currently assigned onload functions.
// Function found at Simon Willison's weblog - http://simon.incutio.com/
//
function addLoadEvent(func)
{	
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}

addLoadEvent(initLightbox);	// run initLightbox onLoad