/**
 * @author Milan Adam
 */

var START_LOAD_INTERVAL = 12000;
var LOOP_INTERVAL = 12000;
var LOOP_SPEED = 900;
var SLIDES = 3;
var SLIDE_WIDTH = 952;
var EASING = "easeOutExpo";
var CARUSEL_TYPE = true;
var WIDTH_CAUSE_RESET = 2000;

$(document).ready(function(){
	var s = new SlideShow();
	s.init(START_LOAD_INTERVAL, LOOP_INTERVAL, LOOP_SPEED, SLIDES, SLIDE_WIDTH, EASING, CARUSEL_TYPE);
});

function SlideShow(){};
SlideShow.prototype = {
	init:function(_startLoadInterval, _loopInterval, _loopSpeed, _slides, _slideWidth, _easing, _caruselType){
		this.startLoadInterval = _startLoadInterval;
		this.loopInterval = _loopInterval;
		this.loopSpeed = _loopSpeed;
		this.slides = _slides;
		this.slideWidth = _slideWidth;
		this.easing = _easing;
		this.caruselType = _caruselType;
		this.actual = 1;
		this.slideTimer;
		this.slideStartupTimer;
		this.animating = false;
		
		this.slideElement = $(".tab-scroller");
		var self = this;
		
		$(".sl").click(function(){
			if(!self.animating)
			{
				self.slideRight();
				self.stopSlideShow(self.slideTimer,self.slideStartupTimer);
			}
			return false;
		});
		$(".sr").click(function(){
			if(!self.animating)
			{
				self.slideLeft();
				self.stopSlideShow(self.slideTimer,self.slideStartupTimer);
			}
			return false;
		});
		$(".c1").click(function(){
			switch(self.actual){
				case 1:
					break;
				case 2:
					self.slideRight();
					break;
				case 3:
					self.slideLeft();
					break;
				case deafult:
					break;
			}
			self.stopSlideShow(self.slideTimer,self.slideStartupTimer);
		});
		$(".c2").click(function(){
			switch(self.actual){
				case 1:
					self.slideLeft();
					break;
				case 2:
					break;
				case 3:
					self.slideRight();
					break;
				case deafult:
					break;
			}
			self.stopSlideShow(self.slideTimer,self.slideStartupTimer);
		});
		$(".c3").click(function(){
			switch(self.actual){
				case 1:
					self.slideRight();
					break;
				case 2:
					self.slideLeft();
					break;
				case 3:
					break;
				case deafult:
					break;
			}
			self.stopSlideShow(self.slideTimer,self.slideStartupTimer);
		});
		$(".pause").click(function(){
			if(!$(this).hasClass("play")) self.stopSlideShow(self.slideTimer,self.slideStartupTimer);
			else self.startLoading();
			return false;
		});
		this.updatePositions();
		this.waitForStart();
	},
	waitForStart:function(){
		var b = this.Bind(this.startLoading);
		this.slideStartupTimer = setTimeout(b,this.startLoadInterval);
	},
	updatePositions:function(){
		//TODO in case of more than 3 slides - needs to be updated
		if(this.caruselType)
		{
			switch(this.actual){
				case 1: 
					var first_left = $("#tab1").position().left;
					var second_left = first_left + SLIDE_WIDTH;
					var third_left = first_left - SLIDE_WIDTH;
					$("#tab2").css("left",second_left);
					$("#tab3").css("left",third_left);
					break;
				case 2:
					var scroller = null;
					scroller = $(".tab-scroller").position().left;
					if(scroller > WIDTH_CAUSE_RESET || scroller < -WIDTH_CAUSE_RESET){
						$("#tab1").css("left",0-SLIDE_WIDTH);
						$("#tab2").css("left",0);
						$("#tab3").css("left",0+SLIDE_WIDTH);
						$(".tab-scroller").css("left",0);
					}
					else{
						var second_left = $("#tab2").position().left;
						var first_left = second_left - SLIDE_WIDTH;
						var third_left = second_left + SLIDE_WIDTH;
						$("#tab1").css("left",first_left);
						$("#tab3").css("left",third_left);
					}
					break;
				case 3:
					var third_left = $("#tab3").position().left;
					var first_left = third_left + SLIDE_WIDTH;
					var second_left = third_left - SLIDE_WIDTH;
					$("#tab1").css("left",first_left);
					$("#tab2").css("left",second_left);
					break;
				default: break;
			}
		}
		
	},
	startLoading:function(){
		$(".pause").removeClass("play");
		var b = this.Bind(this.slideLeft);
		this.slideTimer = setInterval(b,LOOP_INTERVAL);
	},
	loadImage:function(tab){
		
	},
	slideLeft:function(){
		var self = this;
		self.animating = true;
		if(this.actual==this.slides) this.actual = 0;
		this.actual++;
		if (this.caruselType) 
		{
			var leftMove = "-="+this.slideWidth+"px";
		}
		else
		{
			var pos = this.slideWidth * (this.actual-1) + 1;
			if(pos == 1) pos = 0;
			var leftMove = "-" + pos +"px";
		}
		this.slideElement.animate({"left":leftMove},{duration:this.loopSpeed,easing:this.easing,complete:function(){
			$("#counter").removeClass().addClass("a"+self.actual);
			self.animating = false;
			self.updatePositions();
			}});
		
	},
	slideRight:function(){
		var self = this;
		self.animating = true;
		if(this.actual==1) this.actual = this.slides+1;
		this.actual--;
		if(this.caruselType)
		{
			var rightMove = "+="+this.slideWidth+"px";
		}
		else
		{
			var pos = this.slideWidth * (this.actual-1) + 1;
			if(pos == 1) pos = 0;
			var rightMove = "-" + pos + "px";
		}
		this.slideElement.animate({"left":rightMove},{duration:this.loopSpeed,easing:this.easing,complete:function(){
			$("#counter").removeClass().addClass("a"+self.actual);
			self.animating = false;
			self.updatePositions();
			}});
	},
	Bind: function(Method){
        var _this = this; 
        return(
             function(){
                return(Method.apply(_this, arguments));
             }
        );
    },
	stopSlideShow:function(timer,startupTimer){
		clearTimeout(startupTimer);
		clearInterval(timer);
		$(".pause").addClass("play");
	}
};

/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2008 George McGinley Smith
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
	def: 'easeOutQuad',
	swing: function (x, t, b, c, d) {
		//alert(jQuery.easing.default);
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeInQuad: function (x, t, b, c, d) {
		return c*(t/=d)*t + b;
	},
	easeOutQuad: function (x, t, b, c, d) {
		return -c *(t/=d)*(t-2) + b;
	},
	easeInOutQuad: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t + b;
		return -c/2 * ((--t)*(t-2) - 1) + b;
	},
	easeInCubic: function (x, t, b, c, d) {
		return c*(t/=d)*t*t + b;
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	},
	easeInOutCubic: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t + b;
		return c/2*((t-=2)*t*t + 2) + b;
	},
	easeInQuart: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t + b;
	},
	easeOutQuart: function (x, t, b, c, d) {
		return -c * ((t=t/d-1)*t*t*t - 1) + b;
	},
	easeInOutQuart: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
		return -c/2 * ((t-=2)*t*t*t - 2) + b;
	},
	easeInQuint: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t*t + b;
	},
	easeOutQuint: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t*t*t + 1) + b;
	},
	easeInOutQuint: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
		return c/2*((t-=2)*t*t*t*t + 2) + b;
	},
	easeInSine: function (x, t, b, c, d) {
		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
	},
	easeOutSine: function (x, t, b, c, d) {
		return c * Math.sin(t/d * (Math.PI/2)) + b;
	},
	easeInOutSine: function (x, t, b, c, d) {
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	},
	easeInExpo: function (x, t, b, c, d) {
		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
	},
	easeOutExpo: function (x, t, b, c, d) {
		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
	},
	easeInOutExpo: function (x, t, b, c, d) {
		if (t==0) return b;
		if (t==d) return b+c;
		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
	},
	easeInCirc: function (x, t, b, c, d) {
		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
	},
	easeOutCirc: function (x, t, b, c, d) {
		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
	},
	easeInOutCirc: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
	},
	easeInElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
	},
	easeOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	},
	easeInOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
	},
	easeInBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*(t/=d)*t*((s+1)*t - s) + b;
	},
	easeOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
	},
	easeInOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158; 
		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
	},
	easeInBounce: function (x, t, b, c, d) {
		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
	},
	easeOutBounce: function (x, t, b, c, d) {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	},
	easeInOutBounce: function (x, t, b, c, d) {
		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
});

/*
 *
 * TERMS OF USE - EASING EQUATIONS
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2001 Robert Penner
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
 */