/*
Created By: Chris Campbell
Website: http://particletree.com
Date: 2/1/2006

Inspired by the lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
*/

/*-------------------------------GLOBAL VARIABLES------------------------------------*/

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

/*-----------------------------------------------------------------------------------------------*/

//Browser detect script origionally created by Peter Paul Koch at http://www.quirksmode.org/

function getBrowserInfo() {
	if (checkIt('konqueror')) {
		browser = "Konqueror";
		OS = "Linux";
	}
	else if (checkIt('safari')) browser 	= "Safari"
	else if (checkIt('omniweb')) browser 	= "OmniWeb"
	else if (checkIt('opera')) browser 		= "Opera"
	else if (checkIt('webtv')) browser 		= "WebTV";
	else if (checkIt('icab')) browser 		= "iCab"
	else if (checkIt('msie')) browser 		= "Internet Explorer"
	else if (!checkIt('compatible')) {
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";

	if (!version) version = detect.charAt(place + thestring.length);

	if (!OS) {
		if (checkIt('linux')) OS 		= "Linux";
		else if (checkIt('x11')) OS 	= "Unix";
		else if (checkIt('mac')) OS 	= "Mac"
		else if (checkIt('win')) OS 	= "Windows"
		else OS 								= "an unknown operating system";
	}
}

function checkIt(string) {
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

/*-----------------------------------------------------------------------------------------------*/

Event.observe(window, 'load', initialize, false);
Event.observe(window, 'load', getBrowserInfo, false);
Event.observe(window, 'unload', Event.unloadCache, false);

var lightbox = Class.create();

lightbox.prototype = {
	form_email : '',
	form_password : '',
	form_checkbox: '',
	form_template: '',
	yPos : 0,
	xPos : 0,

	initialize: function(ctrl) {
		this.content = ctrl.href;
		Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
		ctrl.onclick = function(){return false;};
	},
	
	// Turn everything on - mainly the IE fixes
	activate: function(){
		if (browser == 'Internet Explorer'){
			this.getScroll();
			this.prepareIE('100%', 'hidden');
			this.setScroll(0,0);
			this.hideSelects('hidden');
		}
		jQuery('embed').css("visibility", "hidden");
		jQuery('object').css("visibility", "hidden");
		this.displayLightbox("block");
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox
	prepareIE: function(height, overflow){
		bod = document.getElementsByTagName('body')[0];
		bod.style.height = height;
		bod.style.overflow = overflow;
  
		htm = document.getElementsByTagName('html')[0];
		htm.style.height = height;
		htm.style.overflow = overflow; 
	},
	
	// In IE, select elements hover on top of the lightbox
	hideSelects: function(visibility){
		selects = document.getElementsByTagName('select');
		for(i = 0; i < selects.length; i++) {
			selects[i].style.visibility = visibility;
		}
	},
	
	// Taken from lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
	getScroll: function(){
		if (self.pageYOffset) {
			this.yPos = self.pageYOffset;
		} else if (document.documentElement && document.documentElement.scrollTop){
			this.yPos = document.documentElement.scrollTop; 
		} else if (document.body) {
			this.yPos = document.body.scrollTop;
		}
	},
	
	setScroll: function(x, y){
		window.scrollTo(x, y); 
	},
	
	displayLightbox: function(display){
		$('overlay').style.display = display;
		$('lightbox').style.display = display;
		if(display != 'none') this.loadInfo();
	},
	
	// Begin Ajax request based off of the href of the clicked linked
	loadInfo: function() {
		var myAjax = new Ajax.Request(
        this.content,
        {method: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
		);
		
	},
	
	// Display Ajax response
	processInfo: function(response){

		if(response.responseText.substr(0,9) == '<!DOCTYPE'){
			lbContentGuts = '<div id="lbContent">' + response.responseText + '</div>';
			info = '';
		}
		else{
			lbContentGuts = '<div id="lbContent">' + this.form_template + '</div>';
			
			if( $('error_registration') ) {
				$('error_registration').remove();
			}
			info = "<div style='font-size: 1em;' id='error_registration'>" + response.responseText + "</div>";
		}

		new Insertion.Before($('lbLoadMessage'), lbContentGuts);
		
		if(info != '') {
			
			new Insertion.Before($('lbContent'), info);
			$('email').value = this.form_email;
			$('password').value = this.form_password;
			$('remember').checked = this.form_checkbox ? true : false;
		}

		$('lightbox').className = "done";	
		this.actions();	
		if(response.responseText.substr(0,7) == 'uspesno'){
			var mySplitResult = response.responseText.split(":");
			if( mySplitResult[1] == 'poslodavci' ){
				parent.location = '/'+mySplitResult[1]+'/index.php?category=postings';
			}
			else{
				parent.location = '/'+mySplitResult[1]+'/index.php?category=profile';
			}
			this.deactivate();
			return;
		}
				
	},
	
	// Search through new links within the lightbox, and attach click event
	actions: function(){
		lbActions = document.getElementsByClassName('lbAction');
	    //parametri_ajax = "invite_name=" + document.getElementById("invite_name").getAttribute('value') + "&invite_email=" + document.getElementById("invite_name").getAttribute('value');
		
/* 		$('email').observe('keypress', function(e){
											if (e.keyCode == Event.KEY_RETURN)  ;
										}
		); */
		
		for(i = 0; i < lbActions.length; i++) {
			Event.observe(lbActions[i], 'click', this[lbActions[i].rel].bindAsEventListener(this), false);
			lbActions[i].onclick = function(){return false;};
		}

	},

	
	// Example of creating your own functionality once lightbox is initiated
	insert: function(e){
	   link = Event.element(e).parentNode;
	   Element.remove($('lbContent'));
	 
	   var myAjax = new Ajax.Request(
			  link.href,
			  {method: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
	   );
	},
	
	// agena start
	insertformregister: function(e){

		var my_form = document.forms['registracija'];
		var	remember_check = ( my_form.elements['remember'].checked ) ? 1 : 0;
		
		this.form_email = my_form.elements['email'].value;
		this.form_password = encodeURIComponent(my_form.elements['password'].value);
		this.form_checkbox = my_form.elements['remember'].checked;
		
		if( !this.validateForm(my_form) ) return false;
		
		parametri_ajax = 'Email='+ this.form_email + '&Password='+ this.form_password + '&remember='+ remember_check + '&action='+ my_form.elements['action'].value;
		
		link = Event.element(e).parentNode;
		
		//kopiramo sadrzaj formulara u atribut lightbox-a
		this.form_template = $('lbContent').innerHTML;
		
		Element.remove($('lbContent'));

		var myAjax = new Ajax.Request(
			  link.href,
			  {method: 'post', parameters: parametri_ajax, onComplete: this.processInfo.bindAsEventListener(this)}
		);
	},
	
	validateForm: function (this_form){
		if(this_form.email.value=="" || this_form.email.value=="e-mail"){
			alert('Greška: Polje za e-mail nije popunjeno.');
			this_form.email.focus();
			return false;
		}
		else if(this_form.password.value==""){
			alert('Greška: Polje za lozinku nije popunjeno.');
			this_form.password.focus();
			return false;
		}
		return true;
	},
	// agena end
	
	// Example of creating your own functionality once lightbox is initiated
	deactivate: function(){

		Element.remove($('lbContent'));
		if( $('error_registration') ) Element.remove($('error_registration'));

		
		if (browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		}
		jQuery('embed').css("visibility", "visible");
		jQuery('object').css("visibility", "visible");
		this.displayLightbox("none");
	}
}

/*-----------------------------------------------------------------------------------------------*/

// Onload, make all links that need to trigger a lightbox active
function initialize(){
	addLightboxMarkup();
	lbox = document.getElementsByClassName('lbOn');
	for(i = 0; i < lbox.length; i++) {
		valid = new lightbox(lbox[i]);
	}
}

// Add in markup necessary to make this work. Basically two divs:
// Overlay holds the shadow
// Lightbox is the centered square that the content is put into.
function addLightboxMarkup() {
	bod 				= document.getElementsByTagName('body')[0];
	overlay 			= document.createElement('div');
	overlay.id		= 'overlay';
	lb					= document.createElement('div');
	lb.id				= 'lightbox';
	lb.className 	= 'loading';
	lb.innerHTML	= '<div id="lbLoadMessage" style="text-align:center; color: #aaa; font-size: 14px; font-weight: bold; padding-top:158px;padding-bottom: 158px;">' +
							'<img src="/images/loading.gif" />' +
						  '<p>Učitavanje...</p>' +
						  '</div>';
	bod.appendChild(overlay);
	bod.appendChild(lb);
}