/*
 * 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. 
 *
 */


/*
XML-Slider by Laith Abu Rakty
Email: laith99@yahoo.com
*/

(function($){
	$.fn.xmlSlider = function(options) {
		var
		  defaults = {xmlFile:'',
		  			  width:675,
		  			  height:325,
		  			  speed:3000,
		  			  timeout:5000,
		  			  random:false,
		  			  easing:false,
		  			  toggleBtn:false,
		  			  navBtn:false,
		  			  play:'Play',
		  			  pause:'Pause',
		  			  backward:'Backward',
		  			  forward:'Forward',
		  			  imageFail:'http://p11d-software.co.uk/assets/images/p11d-home-image-slider-fail.jpg'
		  			  },
		  settings = $.extend({}, defaults, options),
		  $this = this;		  
	  	//get XML
		$.ajax({
		type: "GET",
		url: settings.xmlFile,
		dataType: "xml",
		async : false,
		error: function(){
			if(typeof(console) !== 'undefined' && console != null)
				console.log("Error: XML file URL is not valid!");
		},
		success: function(xml){
			//append divs
			$this.html('');
			$this.append("<div id='xsBg'></div><div id='xsCaptions'><ul></ul></div>").find('ul');
			$this.append("<div id='xsImages'><ul></ul></div>").find('ul');	
	  		//retrive info
	  		var xsUrl,xsLink,xsTitle,xsDesc;
			$(xml).find('info').each(function(){
				xsUrl  =  $(this).find('img').text();
				xsLink  =  $(this).find('link').text();
				xsTitle  =  $(this).find('title').text();
				xsDesc =  $(this).find('desc').text();
				$("#xsImages ul").append("<li><a href='"+xsLink+"' target='_blank'><img src='"+xsUrl+"' alt='"+xsTitle+"' /></a></li>");
				$("#xsCaptions ul").append("<li><a href='"+xsLink+"' target='_blank'><h1>"+xsTitle+"</h1></a><p>"+xsDesc+"</p></li>");
			});
			//begin
			var xsCount = $(xml).find('info').size();
			if($(xml).find('info').size() > 0){
				//declare some vars & bind events 
				var	calcImg = settings.width*(xsCount-1)*-1,
					calcInfoHeight = $('#xsCaptions').height(),
					calcInfo = calcInfoHeight*(xsCount-1)*-1,
					RE = /^\d*$/,
					mouseOut = true,
					interval = null;	
				
				//dress them up
					$this.css({'float':'left','position':'relative','width':settings.width,'height':settings.height});
					$('#xsCaptions,#xsBg').css({'top':(settings.height-calcInfoHeight)});
					$('#xsCaptions li,#xsBg').css({'height':calcInfoHeight});
					$('#xsImages ul').css({'width': settings.width*xsCount});
					$('#xsImages li').css({'width':settings.width,'height':settings.height});
				
				//Determine the speed
				if(!RE.test(settings.timeout))
					settings.timeout = 3000;
				
				//easing settings
				if(settings.easing[0] == "all")
					settings.easing = new Array("easeInQuad","easeOutQuad","easeInOutQuad","easeInCubic","easeOutCubic","easeInOutCubic","easeInQuart","easeOutQuart","easeInOutQuart","easeInQuint","easeOutQuint","easeInOutQuint","easeInSine","easeOutSine","easeInOutSine","easeInExpo","easeOutExpo","easeInOutExpo","easeInCirc","easeOutCirc","easeInOutCirc","easeInElastic","easeOutElastic","easeInOutElastic","easeInBack","easeOutBack","easeInOutBack","easeInBounce","easeOutBounce","easeInOutBounce");
				
				//just at the 1st time
				imgCount = 0;
				$("#xsImages img").load(function(){
				  imgCount++;
				  if (imgCount == xsCount)
				    start_interval();
				}).error(function(){
					this.attr('src',settings.imageFail);
				});
				
				//decalre toggle
				if(settings.toggleBtn){
					$this.append('<div id="xsToggle">'+settings.pause+'</div>');
					$('#xsToggle').toggle(
						function(){
							$('#xsToggle').html(settings.play);
							stop_interval();
						},
						function(){
							$('#xsToggle').html(settings.pause);
							start_interval();
						}
					);
				}
				
				//mouse events
				$this.mouseover(function(){mouseOut = false;});
				$this.mouseout(function(){mouseOut = true;});
				
				//decalre left and right mav
				if(settings.navBtn){
					$this.append('<div id="xsLeft">'+settings.backward+'</div><div id="xsRight">'+settings.forward+'</div>');
					
					$('#xsLeft').html(settings.backward).click(function(){
						if($("#xsImages ul").position().left == 0){
							move("",calcImg ,calcInfo);
						}else{
							move("+=",settings.width,calcInfoHeight);
						}
					});
					$('#xsRight').html(settings.forward).click(function(){
						if($("#xsImages ul").position().left - settings.width < calcImg){
							move("",0,0);
						}else{
							move("-=",settings.width,calcInfoHeight);
						}
					});
				}
				
				function rand(n){
					return ( Math.floor ( Math.random ( ) * n ) );
				}
				
				function start_interval(){
					interval = setInterval( slider , settings.timeout );
				}
				
				function stop_interval(){
					clearInterval( interval );
				}
				
				function move(way_of_move,width,height){
					stop_interval();
					$("#xsImages ul:not(:animated)").animate({'left'	:	way_of_move + width 	}, settings.speed, easing() );
					$("#xsCaptions ul:not(:animated)").animate({'top'	:	way_of_move + height 	}, settings.speed, easing() , function(){
						start_interval();
					});
				}
				
				function easing(){
					if(settings.easing.length > 1){
						return settings.easing[ rand( settings.easing.length ) ];
					}else{
						return settings.easing[0];
					}
				}
				
				function slider(){
					if(mouseOut){
						if(settings.random){
							random = rand(xsCount);
							width = settings.width  * random;
							height = calcInfoHeight * random;
							move("-",width ,height);	
						}else{
							if($("#xsImages ul").position().left - settings.width < calcImg){
								move("",0,0);
							}else{
								move("-=",settings.width,calcInfoHeight);
							}
						}
					}
				}				
			}else
				if(typeof(console) !== 'undefined' && console != null)
					console.log("Error: XML file is not valid!");
		}
		});
	};
})(jQuery);