/*
 * jQuery Nivo Slider v2.1
 * http://nivo.dev7studios.com
 *
 * Copyright 2010, Gilbert Pellegrom
 * Free to use and abuse under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * May 2010 - Pick random effect from specified set of effects by toronegro
 * May 2010 - controlNavThumbsFromRel option added by nerd-sh
 * May 2010 - Do not start nivoRun timer if there is only 1 slide by msielski
 * April 2010 - controlNavThumbs option added by Jamie Thompson (http://jamiethompson.co.uk)
 * March 2010 - manualAdvance option added by HelloPablo (http://hellopablo.co.uk)
 */

(function($) {

	$.fn.nivoSlider = function(options) {

		//Defaults are below
		var settings = $.extend({}, $.fn.nivoSlider.defaults, options);

		return this.each(function() {
			//Useful variables. Play carefully.
			var vars = {
				currentSlide: 0,
				currentImage: '',
				totalSlides: 0,
				randAnim: '',
				running: false,
				paused: false,
				stop:false,
				first: 0,
				timer: 0,
				contentTimer: 0,
				tempfirst: 0
			};
		
			//Get this slider
			var slider = $(this);
			slider.data('nivo:vars', vars);
			slider.css('position','relative');
			slider.addClass('nivoSlider');
			
			//Find our slider children
			var kids = slider.children();
			kids.each(function() {
				var child = $(this);
				var link = '';
				if(!child.is('img')){
					if(child.is('a')){
						child.addClass('nivo-imageLink');
						link = child;
					}
					child = child.find('img:first');
				}
				//Get img width & height
                var childWidth = child.width();
                if(childWidth == 0) childWidth = child.attr('width');
                var childHeight = child.height();
                if(childHeight == 0) childHeight = child.attr('height');
                //Resize the slider
                if(childWidth > slider.width()){
                    slider.width(childWidth);
                }
                if(childHeight > slider.height()){
                    slider.height(childHeight);
                }
                if(link != ''){
                    link.css('display','none');
                }
                child.css('display','none');
                vars.totalSlides++;
			});
			
			//Set startSlide
			if(settings.startSlide > 0){
				if(settings.startSlide >= vars.totalSlides) settings.startSlide = vars.totalSlides - 1;
				vars.currentSlide = settings.startSlide;
			}
			
			//Get initial image
			if($(kids[vars.currentSlide]).is('img')){
				vars.currentImage = $(kids[vars.currentSlide]);
			} else {
				vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
			}
			
			//Show initial link
			if($(kids[vars.currentSlide]).is('a')){
				$(kids[vars.currentSlide]).css('display','block');
			}
			
			//Set first background
			slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
			
			//Add initial slices
			for(var i = 0; i < settings.slices; i++){
				var sliceHeight = Math.round(slider.height()/settings.slices);
				if(i == settings.slices-1){
					slider.append(
						$('<div class="nivo-slice"></div>').css({ top:(sliceHeight*i)+'px', height:(slider.height()-(sliceHeight*i))+'px' })
					);
				} else {
					slider.append(
						$('<div class="nivo-slice"></div>').css({ top:(sliceHeight*i)+'px', height:sliceHeight+'px' })
					);
				}
			}
			
			//In the words of Super Mario "let's a go!"
			vars.timer = 0;
			// Second loop -> setInverval with var showContentTime
			if (settings.showContent && !vars.paused && vars.first == 0) {
				clearInterval(vars.timer);
				vars.first = 1;
				content = $(settings.contentPraefixClass+(vars.currentSlide+1));
				content.fadeIn(settings.fadeSpeed);
				setTimeout(function(){					
					content.fadeOut(settings.fadeSpeed);
				}, (settings.showContentTime));
				vars.timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, (settings.showContentTime));
			}
			else if(!settings.manualAdvance && kids.length > 1 && !vars.paused){
				vars.timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
			}

			//Add Direction nav
			if(settings.directionNav){
				slider.append('<div class="nivo-directionNav"><a class="nivo-prevNav">Prev</a><a class="nivo-nextNav">Next</a></div>');
				
				//Hide Direction nav
				if(settings.directionNavHide){
					$('.nivo-directionNav', slider).hide();
					slider.hover(function(){
						$('.nivo-directionNav', slider).show();
					}, function(){
						$('.nivo-directionNav', slider).hide();
					});
				}
				
				$('a.nivo-prevNav', slider).live('click', function(){
					if(vars.running) return false;
					clearInterval(vars.timer);
					vars.timer = '';
					vars.currentSlide-=2;
					$('a.nivo-prevNav', slider).fadeOut(settings.animSpeed);
					$('a.nivo-nextNav', slider).fadeOut(settings.animSpeed);
					nivoRun(slider, kids, settings, 'prev');
				});
				
				$('a.nivo-nextNav', slider).live('click', function(){
					if(vars.running) return false;	
					clearInterval(vars.timer);	
					vars.timer = '';
					$('a.nivo-prevNav', slider).fadeOut(settings.animSpeed);
					$('a.nivo-nextNav', slider).fadeOut(settings.animSpeed);
					nivoRun(slider, kids, settings, 'next');
				});
			}
			
			//Add Control nav
			if(settings.controlNav){
				var nivoControl = $('<div class="nivo-controlNav"></div>');
				slider.append(nivoControl);
				for(var i = 0; i < kids.length; i++){
					if(settings.controlNavThumbs){
						var child = kids.eq(i);
						if(!child.is('img')){
							child = child.find('img:first');
						}
                        if (settings.controlNavThumbsFromRel) {
                            nivoControl.append('<a class="nivo-control" rel="'+ i +'"><img src="'+ child.attr('rel') + '" alt="" /></a>');
                        } else {
                            nivoControl.append('<a class="nivo-control" rel="'+ i +'"><img src="'+ child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) +'" alt="" /></a>');
                        }
					} else {
						nivoControl.append('<a class="nivo-control" rel="'+ i +'">'+ (i + 1) +'</a>');
					}
					
				}
				//Set initial active link
				$('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');
				
				$('.nivo-controlNav a', slider).live('click', function(){
					if(vars.running) return false;
					if($(this).hasClass('active')) return false;
					clearInterval(vars.timer);
					vars.timer = '';
					slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
					vars.currentSlide = $(this).attr('rel') - 1;
					nivoRun(slider, kids, settings, 'control');
				});
			}
			
			//Event when Animation finishes
			slider.bind('nivo:animFinished', function(){ 
				vars.running = false; 
				//Hide child links
				$(kids).each(function(){
					if($(this).is('a')){
						$(this).css('display','none');
					}
				});
				//Show current link
				if($(kids[vars.currentSlide]).is('a')){
					$(kids[vars.currentSlide]).css('display','block');
				}
				//Restart the timer
				if (settings.showContent) {
					clearInterval(vars.timer);
					vars.timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, (settings.showContentTime));
				}
				else if(vars.timer == '' && !vars.paused && !settings.manualAdvance){
					vars.timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
				}
			});			
		});
		
		function nivoRun(slider, kids, settings, nudge){
			//Get our vars
			var vars = slider.data('nivo:vars');
			if((!vars || vars.stop) && !nudge) return false;
					
			//Set current background before change
			if(!nudge){
				slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
			} else {
				if(nudge == 'prev'){
					content = $(settings.contentPraefixClass+(vars.currentSlide+3));
					content.fadeOut(settings.fadeSpeed);
					slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
				}
				if(nudge == 'next'){
					content = $(settings.contentPraefixClass+(vars.currentSlide+1));
					content.fadeOut(settings.fadeSpeed);
					slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
				}
			}
			
			if (!vars.paused && vars.first == 1) {
				vars.currentSlide++;
					if(vars.currentSlide == vars.totalSlides){ 
						vars.currentSlide = 0;
					}
					if(vars.currentSlide < 0) {
						vars.currentSlide = (vars.totalSlides - 1);
					}
					//Set vars.currentImage
					if($(kids[vars.currentSlide]).is('img')){
						vars.currentImage = $(kids[vars.currentSlide]);
					} else {
						vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
					}			
					//Set active links
					if(settings.controlNav){
						$('.nivo-controlNav a', slider).removeClass('active');
						$('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');
					}
				
				//Set new slice backgrounds
				var  i = 0;
				$('.nivo-slice', slider).each(function(){
					var sliceHeight = Math.round(slider.height()/settings.slices);
					$(this).css({ width:'0px', opacity:'0', 
						background: 'url('+ vars.currentImage.attr('src') +') no-repeat 0% -'+ (sliceHeight * i) +'px' });
					i++;
				});
			
				//Run effects
				vars.running = true;
				if(settings.effect == 'ltr'){
					var timeBuff = 0;
					var i = 0;
					var slices = $('.nivo-slice', slider);
					if(settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') slices = $('.nivo-slice', slider)._reverse();
					slices.each(function(){
						var slice = $(this);
						//slice.css('top','0px');
						if(i == settings.slices-1){
							setTimeout(function(){
								slice.animate({ width:'100%', opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
							}, (100 + timeBuff));
						} else {
							setTimeout(function(){
								slice.animate({ width:'100%', opacity:'1.0' }, settings.animSpeed);
							}, (100 + timeBuff));
						}
						timeBuff += 50;
						i++;
					});
				} 
			}
			
			// here starts the content fadeIn @author David Zurek
			if(settings.showContent && !vars.paused) {
				var content = '';
				// set Content var
				content = $(settings.contentPraefixClass+(vars.currentSlide+1));
				
				// Show Content
				setTimeout(function(){					
					content.fadeIn(settings.fadeSpeed);
				}, (settings.fadeSpeed));
				// show next and prev image
				setTimeout(function(){	
					$('a.nivo-prevNav', slider).fadeIn(settings.animSpeed);
					$('a.nivo-nextNav', slider).fadeIn(settings.animSpeed);
				}, (settings.fadeSpeed+1000));
				// set Time to hide the content
				vars.contentTimer = setTimeout(function(){
						content.fadeOut(settings.fadeSpeed);
						clearTimeout(vars.counterTimer);
						vars.counterTimer = '';
					}, (settings.showContentTime+settings.fadeSpeed));
					
				// Stop the Interval and start it again
				clearInterval(vars.timer);
				vars.timer = '';
				vars.timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, (settings.showContentTime));				
			}
		}		
	};
	
	//Default settings
	$.fn.nivoSlider.defaults = {
		effect:'random',
		slices:15,
		animSpeed:500,
		pauseTime:3000,
		startSlide:0,
		showContent:false, // shows some Content between the switches @author David Zurek
		fadeSpeed: 1200, // animation time
        showContentTime: 5000, // the time you want to see the content in seconds @author David Zurek
        contentPraefixClass:'.con_',
        counterPraefixClass:'.c',
		directionNav:true,
		directionNavHide:true,
		controlNav:true,
		controlNavThumbs:false,
        controlNavThumbsFromRel:false,
		controlNavThumbsSearch:'.jpg',
		controlNavThumbsReplace:'_thumb.jpg',
		keyboardNav:true,
		pauseOnHover:true,
		manualAdvance:false,
		captionOpacity:0.8,
		beforeChange: function(){},
		afterChange: function(){},
		slideshowEnd: function(){}
	};
	
	$.fn._reverse = [].reverse;
	
})(jQuery);